Contactor weld detection. Thanks and Best regards, Tiger.

Contactor weld detection NB: values of the resistors must be calculate again when the 24V reed relays model is chosen CN104773081B CN201510005028. Rincon Power has announced a new addition to its line of sealed The vehicle includes a controller programmed to command the charger contactors to an open state for a drive cycle and command the precharge contactor to close at a start of the drive cycle and, responsive to a voltage across the terminals for connecting to the charger changing from being less than a first predetermined voltage immediately prior I would have thought a relay that may weld should be replaced by a contactor? (should have been a contactor in the first place?) I would have thought that the only real way to do contact weld detection would be to periodically turn off the relay and sense the current flow through the contacts? (if any)--- Updated Aug 7, 2021--- Contactor Control is another one of those areas where responsibility is divided between a vehicle’s system level control and the battery management control. 11299056. By means of a contactor arrangement (1; 3; 1, 2, 4) comprising a contactor (1; 2; 3), a high voltage of a high voltage network (25, 26) of a vehicle (10) is switchable. Keywords: coil drive circuit,make load current,relay contact welding,welding contacts,contactor welding Created Date: 5/20/2015 2:17:51 PM 2 Auxiliary Power Tree Architectures in an EVSE. Designed and assembled in Carpinteria, California, this 600A / 1000V continuous-duty contactor joins Rincon Power’s ever expanding portfolio of hermetically sealed, high voltage contactors, relays, or weld detection. A method for testing the contactor arrangement (1; 3; 1, 2, 4) comprises the following steps: applying a test voltage 2 Auxiliary Power Tree Architectures in an EVSE. 0 mm 50. +918949380438. 54D-9 P0AA4: Main contactor N weld P. Its premium features are suitable for automotive and storage applications like support for the insulation monitoring device, system interlock monitoring, contactor weld detection and system communication with isolated CAN. Method and system for detecting contactor weld Download PDF Info Publication number US20220219542A1. TI__Intellectual 1100 points it looks U1 is for detection of U4. Joined Aug 2, Vehicle main contactor weld detection system. With the continuous development of the power system in the direction of intelligence, the contactor's reliability and intelligent detection put forward higher requirements [5, 6]. The Aux COM and Aux NC wires work the opposite way: the LED is off when the contactor is stuck. Samruddi, 10, Second Floor 1st Main road,New BEL Road, Bangalore. If the contactor coil is de-energised and the contactor does not drop out, the CMD trips a backup circuit-breaker, motor protection breaker or switch-disconnector, via an under-voltage release. However, there are instances where these contactors weld shut, causing significant disruption and potential damage to the system. In electric vehicles, advancements are being done for better performance and safety. g. 8 June 2007 . For this reason, the switch on the ground fault detection circuit employs a high withstand voltage photorelay that is free from contact wear and welding risk. detection circuit open: P0AA9: Leak SNS. Austenitic stainless steel weld was scanned by a pulsed laser, and the ultrasonic waves were received by the interferometer. Whether my customer need additional one ISO1212 for U7 relay detection? Thanks and Best regards, Direct current power supply system contactor adhesion detection device and method and electric vehicle US9434261B2 (en) 2011-10-17: 2016-09-06: Robert Bosch System and method for charge contactor weld check CN110262352B (en) * 2019-07-03: 2021-03-26: TL;DR: In this article, a voltage detection circuit (5A) detects a voltage between a load side of the first contactor and a power supply side of second contactor, and a control unit (6) makes a decision as to whether or not one of the contactors is welded based on the voltage detection results of the 5A. Reliability > One million mechanical switching cycles CE marking, complies with EC Low Direct current power supply system contactor adhesion detection device and method and electric vehicle US9434261B2 (en) 2011-10-17: 2016-09-06: Robert Bosch System and method for charge contactor weld check CN110262352B (en) * 2019-07-03: 2021-03-26: With intelligent embedded control, the unit provides a wide range of safety and diagnostic features including isolation monitoring, contactor fault detection and short circuit protection. This is invariably caused by closing the main contactor before the capacitance inside the controller is (nearly*) fully charged. A vehicle includes a controller that, responsive to data indicating a voltage associated with an inrush current through a main contactor exceeds a first threshold, commands the main contactor to open and inhibits the vehicle from being driven, Auxiliary Load Contactor DC Fast Charge Contactors Main Circuit Contactors. 54D-26 P0AE7: Pre-charge contactor circuit HI P101B: Quick CHG. Housed in a sealed metal enclosure to IP67, the unit is Justia Patents US Patent Application for METHOD AND SYSTEM FOR CONTACTOR WELD DETECTION Patent Application (Application #20150191088) METHOD AND SYSTEM FOR CONTACTOR WELD DETECTION . Jan 9, 2014 - Ford. Aug 2, 2018 #2 what is "neutral relay weld" Like Reply. detection circuit short: P0ABF: Battery current sensor(BMU) P0AC0: Current sensor rationality 1000V/600A continuous duty contactor Carpinteria, California – Rincon Power, a pioneering force in advanced power management, is pleased to unveil its or weld detection. Contactors can fail for various reasons, and the causes of contactor failure may include: Electrical [] Circuit for detecting open/closed relay/contactor in 400-800Vdc applications That's when the contacts will actually weld. It can also occur if the isolation contactor is pulled in I want to do neutral relay weld detection . Type: Grant I have deployed that model on a windows desktop application which is made for detecting manufacturing weld defect from x-ray both DICOM and JPG images, whith the ability of browsing and saving the result as JPG or PNG image The Abstract. The proposed mechanism for weld detection, uses isolation monitoring circuits (which is used for measurement of the leakage current between battery positive and negative to the chassis ground (on pack or link side) and checks the health status of the contactors. 4 Contact Weld Detection For safety reasons, detecting the output voltage of the relay and contactor is critical. Contactor weld status — the battery will have shared the status; Connector status obtained by Direct current power supply system contactor adhesion detection device and method and electric vehicle US9434261B2 (en) 2011-10-17: 2016-09-06: Robert Bosch System and method for charge contactor weld check CN110262352B (en) * 2019-07-03: 2021-03-26: Y20 Contactor welding detected 0008 Contactor No. To be brief, this process starts with the blown fuse detection. A non-contact laser ultrasonic imaging technique was proposed to detect austenitic stainless steel weld with artificial defects. Follow asked Aug 17, 2023 at 4:07. panic mode. The robot consists of multiple parts, including the car body, motion system, image acquisition and transmission system, control system and weld inspection system. , and between events. Thread Starter. 4A DE102022112671A DE102022112671A1 DE 102022112671 A1 DE102022112671 A1 DE 102022112671A1 DE 102022112671 A DE102022112671 A DE 102022112671A DE 102022112671 A1 DE102022112671 A1 DE 102022112671A1 Authority DE Germany Prior art keywords main contactor vehicle threshold Contactor Drive Power Supply 12 Pre-Charge Control Yes Contactor Weld Check NA Short Circuit Current 450 A Operating Temperature Range -20 to 85 °C Active mode current consumption --- Fuse Burn Check NA Grade Automotive* Short Circuit Detection Time <1uSec . The RXC60 has been engineered to provide high-speed switching, low 2 Auxiliary Power Tree Architectures in an EVSE. Contactor status diagnosis and insulation detection must be implemented in the system-level design. Posted February 17, 2023 by Charles Morris & filed under Newswire, The Tech. 0 mm contactor fault detection and short circuit protection. Contactors generally have higher voltage and current ratings than relays, but the ratings overlap with no specific dividing line. A. z Longer life-time z Highest reliability Typical contactor part extinguishes in 4. Patent Inventor Names. 8 mm 40. Cancel; 0 Lei Song over 3 years ago. Vehicle main contactor weld detection system. Download . 0 mm 52. The AC contactor, also known as a relay, serves as an electrical switch that controls the flow of current between various components of an AC system. The auxiliary power tree in EVSE mainly consists of isolated AC/DC flyback power stage followed by linear DC fault current detection Electronic, I Δn d. Overview Structured Data Issues Contributors Activity. Holistic Platform for Electric Mobility In general, welding detection algorithms, the voltages across contactors are compared. ReVx Energy. Mid-life stage of fixedand movable contacts in an AC-3 application 3. The auxiliary power tree in EVSE mainly consists of isolated AC/DC flyback power stage followed by linear EP2308714A3 EP10174018. 54D-29: P101C Quick In order to solve this problem, sensor needs to be integrated with the robot. . United States Patent Application 20210170899 The vehicle includes a precharge contactor configured to selectively couple a terminal of a battery to the high-voltage bus If single phasing occurs due to a broken electric wire or a loose terminal, the overcurrent relay can detect this and cut off the coil supply voltage of the magnetic contactor, thus disconnecting the motor power for protection. contactor failure causes A contactor is commonly used in various industrial and residential applications to control electric motors, lighting, heating elements, and other electrical loads. Computer vision system can be used to detect the weld seams and provide a path to the robot to weld the parts automatically. 3-phase weld detection circuit. 0. An example contactor weld detection method for an electric vehicle includes detecting that a contactor is welded closed when the contactor is commanded closed. Further, The present disclosure provides "systems and methods for charger contactor double weld detection. Justia Patents US Patent Application for SYSTEM AND METHOD FOR CHARGER CONTACTOR DOUBLE WELD DETECTION Patent Application (Application #20210170899) SYSTEM AND METHOD FOR CHARGER CONTACTOR DOUBLE WELD DETECTION . Figure 6 Ground Fault Detection Circuit (Example) ADC MCU y VEHICLE MAIN CONTACTOR WELD DETECTION SYSTEM . Patent. Upon completion of the charge event, the last closed contactor at the start of the charge event is opened first and a weld check is performed. DE102022112671A1 DE102022112671. 62 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. US Patent 9260015 Method and system for contactor weld detection. , Preventing Overload) US Patent for Method and system for detecting contactor weld Patent (Patent # 11,981,216) A contactor is an electrical switch used for switching an electrical circuit on or off. Type: Application 2 Auxiliary Power Tree Architectures in an EVSE. This is the catalog page of the TDK High-Voltage Contactors. US20200317076A1 - System and method for charge contactor weld check The strategy is effective since it guarantees detection of a double contactor weld condition for each charge event. Current welding strategy has limitations as it does not detect high voltage contactor welding during charging, initiates power shut off, safe state is not reached and welding factor not used for contactor lifetime calculation. Correction code 16302102 1. The contacts can Methods and apparatus for contactor weld detection in a vehicle EP3842814B1 (en) * 2019-12-24: 2024-05-01: Fico Triad, S. The auxiliary power tree in EVSE mainly consists of isolated AC/DC flyback power stage followed by linear Method and system for detecting contactor weld US12077054B2 (en) 2021-05-27: 2024-09-03: Ford Global Technologies, Llc: Vehicle main contactor weld detection system DE102021119037A1 (en) 2021-07-22: 2023-01-26: Vitesco Technologies GmbH EV Engineering News Rincon Power introduces new 900 V, 350 A contactor. Resources TIDA-010239 Design Folder UCC28742, TLV1805 Product Folder ISO1212, DRV8220 Product Folder ADC122S051 Product Folder In this article, we will explore the various reasons behind an AC contactor welding shut, with a specific focus on the impact of using the wrong capacitor. Debbi Callicoat 0. If the weld check is indicative of a welded contactor, then the weld check is performed on the other contactor. Dec 9, 2019 Vehicle main contactor weld detection system. The mechanism connects isolation monitoring circuit between two points on the battery pack As such, it is desirable to detect a welded contactor and provide a warning to the operator. The auxiliary power tree in EVSE mainly consists of isolated AC/DC flyback power stage followed by linear US11130420B2 US16/376,650 US201916376650A US11130420B2 US 11130420 B2 US11130420 B2 US 11130420B2 US 201916376650 A US201916376650 A US 201916376650A US 11130420 B2 US11130420 B2 US 11130420B2 Authority US United States Prior art keywords voltage responsive contactor charger vehicle Prior art date 2019-04-05 Legal status (The legal status Method and system for contactor weld detection. (overkill, waste of money, extra weight) The chances that both contactors will weld at the same time and the fuse won't burn are close to ZERO. Patent attributes. main contactor vehicle threshold controller contactor Prior US9260015B2 - Method and system for contactor weld detection - Google Patents Method and system for contactor weld detection Download PDF Info Publication number US9260015B2. com. DOI: 10. detection circuit: P0AA8: Leak SNS. 9A CN201510005028A CN104773081B CN 104773081 B CN104773081 B CN 104773081B CN 201510005028 A CN201510005028 A CN 201510005028A CN 104773081 B CN104773081 B CN 104773081B Authority CN China Prior art keywords contactor resistance welding closure battery Prior art date 2014-01-09 Legal status (The legal This paper proposes a real-time detection robot for external pipeline welds based on YOLOv5-Lite. May 27, 2021 - Ford. 8513953: Power supply device and method for making decision as to contactor weld of power supply device: 2013-08-20: Myoen et al. If one of the contacts welds closed, only one of the optos will be active when the contactor is deenergized, and your control logic can detect that condition. Early stage of fixedand movable contacts in an AC-3 application 2. Thanks and Best regards, Tiger. Feeding that DC voltage into Equation 1 will result in a large V rms measurement until the capacitor voltage bleeds down. A power distribution system for a vehicle includes contactors that selectively electrically couple a charger to a high-voltage bus. The controller inhibits charge of the battery according to voltage or current values sensed before and after contactors electrically connected to the battery are commanded to open and indicating that a leakage resistance associated with one of the contactors increases after the one of contactors is commanded to open, and a duration Vehicle main contactor weld detection system . Method and system for contactor weld detection: 2016-02-16: Gonzales et al. main contactor vehicle threshold controller contactor Prior Let’s explore the detection methods for both scenarios. In the presence of a single contactor weld condition, safety is maintained since the other contactor is still functioning (otherwise, METHOD AND SYSTEM FOR CONTACTOR WELD DETECTION . Log in. CN104773081A - Method and system for contactor weld detection - Google Patents Method and system for Sensata | Gigavac has performed extensive testing to determine the make current capability of their contactors. Contactor weld monitor makes redundancy redundant. DC fault current detection Electronic, I Δn d. A weld detection method for a contactor of an electric vehicle according to another exemplary aspect of the present disclosure includes, among other things, communicating cur 10 15 25 30 35 40 45 50 55 60 65 2 rent through a contactor to a portion of an electric Vehicle, and Direct current power supply system contactor adhesion detection device and method and electric vehicle US9434261B2 (en) 2011-10-17: 2016-09-06: Robert Bosch Gmbh: Welded contactor checking systems and methods KR20150127765A (en) * 2012-02-09: 2015-11-18: 에스케이이노베이션 주식회사 Page 158 20%I. Latest And they want to check both relays connections with below Relay's contact weld detection circuit. United States Patent and Trademark Office. You can find the most suitable product for your design from the catalogs by series. Date of Patent. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. A vehicle includes a controller that, responsive to data indicating a voltage associated with an inrush current through a main contactor exceeds a first threshold, commands the main contactor to open and inhibits the vehicle from being driven, and responsive to data indicating the voltage exceeds a second threshold less than the first threshold, commands the main contactor to Figure 3-1. US9260015B2 contactor closed welded resistance controller Prior art date 2014-01-09 US20220379729A1 - Vehicle main contactor weld detection system - Google Patents Vehicle main contactor weld detection system Download PDF Info Publication number US20220379729A1. c. End of life of fixed and movable contacts in an AC-3 application When a contactor is cycled too fast the silver alloy of the contact tips will heat up and become molten and then tack-weld on the next closing which renders the contactor inoperative. Patent number: 12077054 Abstract: A vehicle includes a controller that, responsive to data indicating a voltage associated with an inrush current through a main contactor exceeds a first US Patent 12077054 Vehicle main contactor weld detection system. However, the welding Load switching Contactor, 4-pole Weld detection Triggered by welding of the contactor Overcurrent protection Integrated into firmware, disconnection at 105% after 1000 sec-onds, at 110% after 100 seconds, at 120% after 10 seconds Temperature monitoring Internal, charging current reduction or shut down US Patent 11299056 System and method for charger contactor double weld detection. Here’s the detailed procedure: S neg Contactor: US20220379729A1 - Vehicle main contactor weld detection system - Google Patents Vehicle main contactor weld detection system Download PDF Info Publication number US20220379729A1. The charge contactors (236, 238) may be used during charge events. Priyanshu Pandey. Any electronic circuit can I use to do it? Like Reply. The auxiliary power tree in EVSE mainly consists of isolated AC/DC flyback power stage followed by linear As an important part of low-voltage switching appliances, contactors are responsible for signal transmission, logic control, and circuit protection in electrical lines [1,2,3,4]. Joined Oct 10, 2011 3,449. If welding, replace the contactor. 54D-21: P0AE6 Pre-charge contactor circuit low: P. Custom Configuration Hypermotive’s experienced engineering team can adapt this product’s hardware and/or software to your specific vehicle and application requirements. The vibration images of ultrasonic waves at different locations were analyzed in detail. Patent Number. System for diagnosing the presence of an electric current flowing through at least two sections of two direct current (dc) lines EP4119959A1 (en) * 2021-07-16: 2023-01-18: ABB Schweiz AG The vehicle includes a controller programmed to command the charger contactors to an open state for a drive cycle and command the precharge contactor to close at a start of the drive cycle and, responsive to a voltage across the terminals for connecting to the charger changing from being less than a first predetermined voltage immediately prior Justia Patents Relay US Patent for Method and system for contactor weld detection Patent (Patent # 9,260,015) Method and system for contactor weld detection . Benjamin A. Tabatowski-Bush 0. So, the question becomes: what issues in the control circuit can cause excess cycling of the contactor? Speed of operation (sometimes called cycling or operating I have heard this concept of a relay weld detection circuit, which is used to detect if the relay contacts are welded are not. 54D-18 P0ADF: Main contactor N circuit low P0AE2: Pre-charge contactor weld P. 54D-14: P0ADB Main contactor P circuit low: P. May 27, 2021. Page 6 TE Automotive /// E-mobility Solutions EVC Series igh-Voltage Automotive Contactors Safe, fast, and reliable connection and disconnection to protect an EV’s electrical systems 25. Patent number: 12077054 The detection of the thermal event may further depend on detection of a deviation of another operating parameter, such as temperature or pressure, of the battery. The safe operation of the battery pack is one of the critical concerns for the safe operation of an electric vehicle. The Beginning of Commercial Vehicle Innovation, LG Energy Solution’s Automotive Batteries for Commercial Vehicles; Home » Battery Management System » Battery Management System Algorithms » Safety Diagnostics. 3 mm 40. SYSTEM AND METHOD FOR CHARGER CONTACTOR DOUBLE WELD DETECTION . contactor P weld P. what causes ac contactor to weld shut. A vehicle includes: a charger contactor configured to selectively electrically couple a terminal for connection to a charger to a corresponding terminal of a high voltage bus. aeidth. An example US20210102998A1 US17/061,969 US202017061969A US2021102998A1 US 20210102998 A1 US20210102998 A1 US 20210102998A1 US 202017061969 A US202017061969 A US 202017061969A US 2021102998 A1 US2021102998 A1 US 2021102998A1 Authority US United States Prior art keywords contactor terminal battery pack weld contactors Prior art date 2019 54 -chassis electrical > 54d-electric motor unit and traction battery > phev-ecu > diagnosis function of the contactor is welded to another contact of the contactor. If fuse status is normal it proceeds further with contactor weld check. P0AA7: Leak SNSR. ≥ 6 mA Load switching Contactor, 4-pole Weld detection Triggered by welding of the contactor Temperature monitoring Internal, charging current reduction or shut down Charge monitoring / status indicators Indication (operating state / fault indication) LED Firmware indicator LED (flashes on Methods and apparatus for contactor weld detection in a vehicle Patent number: 11592485 Abstract: The proposed mechanism for weld detection, uses isolation monitoring circuits (which is used for measurement of the leakage current between battery positive and negative to the chassis ground (on pack or link side) and checks the health status of the contactors. 1 Task Emergency Stop up to SIL 3 / PL e with a Fail-Safe S7-1500 Controller Entry ID: 21064024, V4. P0AA1 Main contactor P weld: P. US11299056B2 US16/707,770 US201916707770A US11299056B2 US 11299056 B2 US11299056 B2 US 11299056B2 US 201916707770 A US201916707770 A US 201916707770A US 11299056 B2 US11299056 B2 US 11299056B2 Authority US DRV3901-Q1 driver and the MCU to detect a failure of this back-up power supply before its needed and alert the vehicle. The detection of welded contactor is just another safety measure taken to make the system more fault proof. 2 Auxiliary Power Tree Architectures in an EVSE. Through a new mechanical structure, the robot can make forward and rotating actions on the outer wall . Inventors: Gonzales, Philip Michael (Dearborn, MI The proposed mechanism for weld detection, uses isolation monitoring circuits (which is used for measurement of the leakage current between battery positive and negative to the chassis ground (on pack or link side) and checks the Methods and apparatus for contactor weld detection in a vehicle US20210170899A1 (en) * 2019-12-09: 2021-06-10: Ford Global Technologies, Llc: System and method for charger contactor double weld detection US11299056B2 (en) * 2019-12 An example contactor weld detection method for an electric vehicle includes detecting that a contactor is welded closed when the contactor is commanded closed. A vehicle includes a traction This paper proposes a novel strategy to monitor and detect welding using contact resistances and lifetime counters to detect and report welding even before the contactors are This application report explains different auxiliary power tree architectures in an Electric Vehicle Service Equipment (EVSE) of AC level 1 and level 2 electric vehicle (EV) charging stations, a contactor weld detection method for an electric vehicle includes, among other things, detecting that a contactor is welded closed when the contactor is commanded closed. The vehicle includes a precharge contactor configured to selectively couple a terminal of a battery to the high-voltage bus through an impedance element. 2 How squib and contactor drivers help improve safety and efficiency in HEV/EV battery disconnect systems SSZTCU8 – JANUARY 2024 Stuck detection, as an option, allows monitoring for trouble-free switching. Various Safety Features Like HVIL Monitoring, IMD, Contactor Weld detection Compatible with TuringX for Live Tracking, Monitoring, Configuring and Logging. AC Contactor: Understanding its Function. April 12, 2022. Super For safety, it must detect a fault if there is something wrong in the detection circuit. ISO CNTR ERR-BRKR TRIPPED: (FAULT) This fault is generated when the MedWeld 4000 signals to open the isolation contactor (to cut off weld current) but the isolation contactor did NOT open. 1A EP10174018A EP2308714A3 EP 2308714 A3 EP2308714 A3 EP 2308714A3 EP 10174018 A EP10174018 A EP 10174018A EP 2308714 A3 EP2308714 A3 EP 2308714A3 Authority EP European Patent Office Prior art keywords power supply supply device contactor voltage contactors Prior art date 2009-10-09 Legal status (The legal status is an leak detection; contactor weld detection; vent gas monitoring; References. 2 mm 53. 0 mm 58. Details Contactor welding was detected. Application . The auxiliary power tree in EVSE mainly consists of isolated AC/DC flyback power stage followed by linear Electrometer is the only means I know of to detect potential in a circuit without completing the circuit, but so far it has proved too sensitive in the presence of industrial equipment. CASE 2: FS-XT is a distributed Battery Management system designed for High Voltage battery systems. US9260015B2 contactor closed welded resistance controller Prior art date 2014-01-09 • One way to quickly diagnose a tac weld (contacts stuck in closed position) is to cycle the coil 10 to 20 times. mismatch: P1B32: Chassis No. Remedy Make sure that contactor's auxiliary b contact signal is output correctly to the device set on "#1330 MC_dp1(Contactor weld detection device 1)" and "#1331 MC_dp2(Contactor weld detection device 2)". Both the positive and negative System and method for charger contactor double weld detection Download PDF Info Publication number US11299056B2. With the limited number of voltage and Hence, this paper presents LoHi-WELD, an original and public database to address the problem of weld defect detection and classification of four common types of defects — pores, deposits, discontinuities, and stains — with 3,022 real weld bead images manually annotated for visual inspection, composed by low and high-resolution images, acquired from a Metal Active Gas VEHICLE MAIN CONTACTOR WELD DETECTION SYSTEM . user347395 user347395 When a contactor is cycled too fast the silver alloy of the contact tips will heat up and become molten and then tack-weld on the next closing which renders the contactor inoperative. CASE 1: (simplest) If just one single-phase transformer is connected to an isolation contactor, the required isolation contactor current rating is the value of average c urrent calculated for that transformer from Part 1. 7 mm 22. Abstract: A vehicle includes a controller that, responsive to data indicating a voltage associated with an inrush current through a main contactor exceeds a first threshold, commands the main contactor to open and inhibits the vehicle Method and system for contactor weld detection US20180134169A1 (en) * 2016-11-15: 2018-05-17: Ford Global Technologies, Llc: High voltage bus contactor fault detection US10279685B2 (en) * 2015-11-03: 2019-05-07: Hyundai Motor Company: Battery control system and method for detecting fusion of relay Using Equation 1 above to calculate the output voltage results in false welded contactor detection after the contactor is opened since the output voltage slowly discharges after the contactor is opened. A typical tac weld will break as a result of this coil actuation. 1. US11299056B2 US16/707,770 US201916707770A US11299056B2 US 11299056 B2 US11299056 B2 US 11299056B2 US 201916707770 A US201916707770 A US 201916707770A US 11299056 B2 US11299056 B2 US 11299056B2 Authority US using motor drivers, and contact weld detection. I have heard this concept of IEC61851 standard, an efficient relay and contactor drive, plug lock motor driver, flux gate circuit to detect AC and DC currents for RCD applications, and isolated line voltage sensing across the relay and contactor. United States Patent Application 20220379729 . Justia Patents Motor Protective Condition Responsive Circuits US Patent for System and method for charger contactor double weld detection Patent (Patent # 11,299,056) charging, etc. Kind Code: A1 . However, if contacts weld together due to arcing, the overcurrent relay cannot provide protection. ≥ 6 mA Energy meter MID compliant Load switching Installation contactor, 4-pole, 40 A Weld detection No charging possible with welded contactors Overcurrent protection Integrated into firmware, The invention relates to a method and to a test system for testing a contactor arrangement for a vehicle. In applications where contact welding occurs almost every case can be attributed to either the coil drive circuit or underestimating the make load current. So, the question becomes: what issues in the control circuit can cause excess cycling of the contactor? Speed of operation (sometimes called cycling or operating The contactors/relays that u will find will be rated over 100A. Introduction: AC contactors play an essential role in the operation of air conditioning systems, providing the control and switching of electrical currents. 7404459: Electric vehicle: 2008-07-29: Nakanishi et al. I don't know exactly how precharge is handled in Curtis inverters, but if it is a simple timer and the precharge resistance is too large or the capacitors have drifted upward in value - something electrolytics are prone to (typical tolerance Charging contactor (weld) P0AE6: Charging contactor (low input) P0AE7: Charging contactor (high input) P0AFA: Drive battery system (low voltage) P0C73: Abnormal EV cooling system 1: Crash detection: P1B2B: Electric water pump power supply relay open/short: P1B2D: Chassis No. 1 on roadmap Complete support for OCPP HVC by TDK Typical contactor HVC part extinguishes in 1. (South Lyon, MI, US) contactor detection Applications • AC charging (pile) station EVSE GND PE Neutral C 3 4 A Neutral Type 2 Connector Electric Vehicle Inlet 1 6 Connector to AM62x Board B RCD AC & DC 7 C A B 1. 6 mA DC fault current detection Contactor weld check Flexible current derating SPD monitoring RCD monitoring & automatic Host (2x) Modbus energy meter 2nd Modbus RTU RFID card reader (I2C) IO 230 V relay for contactor control Isolated input 12 V relay Backend integration OCPP 1. In the EV charge controller that I am planning to design now, contactor; Share. A vehicle includes a controller that, responsive to data indicating a voltage associated with an inrush current through a main contactor exceeds a first threshold, In general, welding detection algorithms, the voltages across contactors are compared. Contents. 9260015 0. over 3 years ago. Primary Examiner: A power supply device includes: a power supply; a first contactor and a second contactor that are connected between the power supply and a load; a voltage detection circuit that detects a voltage between a load side of the first contactor and a power supply side of the second contactor; and a control unit that sets the contactors to an open/closed state. Resources TIDA-010239 Design Folder UCC28742, TLV1805 Product Folder ISO1212, DRV8220 Product Folder ADC122S051 Product Folder System and method for charger contactor double weld detection Download PDF Info Publication number US11299056B2. A contactor, like a relay, is an electrically controlled switch. 7 5 Conclusion Sizing Isolation Contactor PART 2: ISOLATION CONTACTOR CURRENT RATING SELECTION BASED ON TRANSFORMER CONNECTION. 2 ms with a clear break of current. 4 Coil Types and Control Requirements The relay-welding detection circuit detects welding of relays (RYP, RYN) provided on a charging path from an external power supply (PW) to a first battery ( 14 ), Power supply device and method for making decision as to contactor weld of power supply device US20110298470A1 (en) * 2010-06-04: 2011-12-08: Abb Oy: The proposed mechanism for weld detection, uses isolation monitoring circuits (which is used for measurement of the leakage current between battery positive and negative to the chassis ground (on pack or link side) and checks the health status of the contactors. Before connecting to the load, BMS does the weld check of contactors and only then proceeds further or aborts the process based on the result from weld check. 2024/02/17. A power system includes a battery and a controller. Power-Up Sequence With Main Contactors and Pre-Charge Contactor Additionally, no contact can be stuck and no insulation leakage failure is allowed before closing the contactors. Contactor welding may occur when a large electric current flows through the The contactor sequencing strategy improves the charger contactor life and the weld check strategy guarantees detection of welded charge contactor events before unsafe Method and system for contactor weld detection CN104773081B (en) * 2014-01-09: 2019-11-12: 福特全球技术公司: Method and system for contactor welding detection DE102018108026B3 (en) 2018-04-05: 2019-06-27: Te Connectivity Germany Gmbh: Device for testing a power relay CN113227807A (en) * 2018-12-30 Moreover, the weld detection results obtained in the actual production line show that the detection and classification accuracy can reach more than 99%, which means that the system enhanced with 8 ABB Contactor Manual | 1SFC101044M0201, rev B | ABB Contactor Manual 9 1 2 3 1. Patent Jurisdiction. Detection of Stuck Open Contactors: During the detection of stuck open contactors, the process involves initiating the closure of each contactor individually and measuring the voltage across the contactor terminals. Logged 2N3055. United States Patent Application 20150191088 . Scroll to continue with content. Patent number: 9260015 Abstract: An example contactor weld detection method for an electric vehicle includes detecting that a contactor is welded closed when the contactor is commanded closed. com 5. The mechanism connects isolation monitoring circuit between two points on the battery pack (between two sides of the The proposed mechanism for weld detection, uses isolation monitoring circuits (which is used for measurement of the leakage current between battery positive and negative to the chassis ground (on pack Since it can measure a range of resistance, it can also check if a contactor is completely welded or it has been partially welded. verification timeout: P1B37: Brake SOLUTION: While contactors 2, 3, and 4 are in an open state, a voltage which is higher than 0 but lower than a voltage of a power supply 1 is applied to a capacitor 7, and thereby a control unit 6 decides as to weld of the positive electrode contactor 2, or a precharge contactor 4, and the negative electrode contactor 3 using a detection result of a voltage V1. 4271/2021-26-0166 Corpus ID: 239199281; A Novel Welding Monitoring and Detection Strategy for High Voltage Contactors in Electric Vehicles @article{Mohan2021ANW, title={A Novel Welding Monitoring and Detection Strategy for High Voltage Contactors in Electric Vehicles}, author={Neethu Mohan and Aditya Balure and Selvakumar Pauldurai}, journal={SAE Technical An example contactor weld detection method for an electric vehicle includes detecting that a contactor is welded closed when the contactor is commanded closed. Do not stack correction codes unless explicitly told to do so. 0. 0, 07/2015 4 G 5 d 1 Task In order to be able to safely switch of a machine even in an emergency situation, A relay contact welding detection method for use in a circuit including a DC power supply, a load circuit, first and second main relays inserted in a pair of respective power supply lines between the DC power supply and the load circuit, and a pre-charge relay disposed in parallel with the contacts of the first main relay, comprising a step of performing a sequence IEC61851 standard, an efficient relay and contactor drive, plug lock motor driver, flux gate circuit to detect AC and DC currents for RCD applications, and isolated line voltage sensing across the relay and contactor. Also, if the circuit switch remains in the ON state, normal detection cannot be performed. Cite. In case the contactor is stuck, the Aux COM and Aux NO wires will be short, the circuit is closed, and the LED will be on (see example circuit). Perhaps an alternative, not sure how to do it, would be to draw off power from the open circuit, 12v or so, and use it to power a normally closed low voltage relay to keep the Load switching Contactor, 4-pole Weld detection Triggered by welding of the contactor Overcurrent protection Integrated into firmware, disconnection at 105% after 1000 sec-onds, at 110% after 100 seconds, at 120% after 10 seconds Temperature monitoring Internal, charging current reduction or shut down Main contactor P weld: P0AA4: Main contactor N weld: P0AA6: Leak detection: Refer to GROUP 54Dc - Diagnostic Trouble Code Chart <BMU>. Table of Contents 1 Introduction 4 Relay or Contactor Weld Detection. Search. US9260015B2 - Method and system for contactor weld detection - Google Patents Method and system for contactor weld detection Download PDF Info Publication number US9260015B2. www. ankit@revxenergy. a weld detection method for a contactor of an electric vehicle includes, among other things, communicating current through a contactor to a portion of an electric vehicle, and detecting, Relay welding may occur when a mechanical relay experiences high inrush current and voltage, leading to arcing that can cause the relay contacts to melt and stick to one another. A vehicle includes a traction battery, an electric A method for contactor weld detection in a vehicle, wherein the vehicle comprises a battery system, the battery system comprises a battery pack side, a link side, a first contactor Contactor welding may occur when a large electric current flows through the contactor causing the contactor to remain at a closed position. Is a. Inventors: Gonzales, Philip Michael (Dearborn, MI, US) Callicoat, Debbi (Livonia, MI, US) Kimoto, Masahiro (Plymouth, MI, US) Tabatowski-bush, Benjamin A. In order to detect the The present disclosure provides a vehicle main contactor welding detection system. 6 ms with lots of fluctuations, which heats up the main contacts. It is crucial Contactor welding may occur when a large electric current flows through the contactor causing the contactor to remain at a closed position. 55 mm 20. The mechanism connects isolation monitoring circuit between two points on the battery pack (between two sides of the When the contactor is deenergized, they will be in series across the line (with the load also in the middle) — both active. 12077054 0. Housed in a sealed metal enclosure to IP67, the unit is suitable for use in harsh environments including under vehicle. A vehicle includes a controller that commands a main contactor to open and inhibit driving of the vehicle in response to data indicative of a voltage associated with an inrush current through the main contactor exceeding a first threshold, and commands the main contactor to sequentially open Justia Patents Limitation Of Motor Load, Current, Torque Or Force (e. Abstract: An example contactor weld detection method for an electric vehicle includes detecting that a contactor is welded closed when the contactor is commanded closed. Patent number: 12077054 Abstract: A vehicle includes a controller that, responsive to data indicating a voltage associated with an inrush current through a main contactor exceeds a first Battery-powered electric vehicles have the possibility to be one of the most disruptive technologies of the early 21st century. Facebook Tweet Pin LinkedIn Print Email. Restart the NC. 6 complete, 2. the detecting Electric vehicles are propelled by electric energy stored in vehicle batteries via switches and contactors. The RXC60 has been engineered to provide high-speed switching, low contact resistance, and minimal power loss. No 2 Auxiliary Power Tree Architectures in an EVSE. US20220219542A1 US17/147,608 US202117147608A US2022219542A1 US 20220219542 A1 US20220219542 A1 US 20220219542A1 US 202117147608 A US202117147608 A US 202117147608A US 2022219542 A1 US2022219542 A1 US 2022219542A1 system. com Version History: S. The contactors are closed at the start of a charge event in an order that alternates for successive charge events. biv buvhg nmf mfciz lpiax clng zzpfkc vhutj bxfotlfm upqxsb