WO2023185473A1 - Appareil de détection de batterie et système de détection de batterie - Google Patents

Appareil de détection de batterie et système de détection de batterie Download PDF

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Publication number
WO2023185473A1
WO2023185473A1 PCT/CN2023/081585 CN2023081585W WO2023185473A1 WO 2023185473 A1 WO2023185473 A1 WO 2023185473A1 CN 2023081585 W CN2023081585 W CN 2023081585W WO 2023185473 A1 WO2023185473 A1 WO 2023185473A1
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WO
WIPO (PCT)
Prior art keywords
voltage
circuit
battery
electrically connected
power battery
Prior art date
Application number
PCT/CN2023/081585
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English (en)
Chinese (zh)
Inventor
陈龙强
Original Assignee
深圳市道通科技股份有限公司
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Filing date
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Publication of WO2023185473A1 publication Critical patent/WO2023185473A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • This application relates to the field of new energy technology, and in particular to a battery detection device and a battery detection system.
  • Power batteries are the main components of new energy vehicles, and the safety of power batteries is related to the driving safety of the vehicle. When a power battery fails, it needs to be repaired to determine the cause of the failure.
  • Embodiments of the present application provide a battery detection device and a battery detection system, aiming to solve the technical problem of how to improve the safety and detection efficiency of power battery detection.
  • an embodiment of the present application provides a battery detection device, including:
  • a high-voltage wire harness plug is used for plugging into the output end of the power battery.
  • the high-voltage wire harness plug includes a positive high-voltage wire and a negative high-voltage wire;
  • the detection component includes a casing and a detection circuit, a wireless communication circuit and a control circuit installed in the casing; the casing is detachably connected to the high-voltage harness plug; the detection circuit is connected to the positive high-voltage line and the The negative high-voltage line is electrically connected to detect the working parameters of the power battery; the control circuit is electrically connected to the detection circuit and the wireless communication circuit respectively, and is used to control the wireless communication circuit to transmit the working parameters to Host computer.
  • the high-voltage wiring harness plug also includes a first plug connector and a second plug connector;
  • One end of the first plug connector is used to be plugged into the output end of the power battery, and the other end is detachably connected to one end of the positive high-voltage line and one end of the negative high-voltage line;
  • One end of the second plug connector is electrically connected to the other end of the positive high-voltage line and the other end of the negative high-voltage line respectively, and the other end is detachably connected to the housing.
  • the detection circuit includes:
  • a first voltage sampling circuit electrically connected between the positive high-voltage line and ground, for sampling the first voltage value between the positive electrode of the power battery and ground;
  • the second voltage sampling circuit is electrically connected between the negative high-voltage line and the ground, and is used to sample the negative electrode and the ground of the power battery.
  • the second voltage value between ground;
  • a switching circuit includes a first end, a second end and a control end.
  • the first end of the switching circuit is electrically connected to the positive high-voltage line, and the control end of the switching circuit is electrically connected to the control circuit;
  • a resistor one end of which is electrically connected to the second end of the switch circuit, and the other end of which is grounded.
  • the first voltage sampling circuit includes:
  • a first voltage dividing circuit electrically connected between the positive high-voltage line and the ground, for dividing the voltage between the positive electrode of the power battery and the ground;
  • a first operational amplifier the first input terminal of the first operational amplifier is electrically connected to the first voltage dividing circuit, the second input terminal of the first operational amplifier is used to input the first reference voltage, the first The output terminal of the operational amplifier is electrically connected to the control circuit.
  • the first voltage sampling circuit includes:
  • a second voltage dividing circuit electrically connected between the negative electrode high-voltage line and the ground, for dividing the voltage between the negative electrode of the power battery and the ground;
  • a second operational amplifier the first input terminal of the second operational amplifier is electrically connected to the second voltage dividing circuit, the second input terminal of the second operational amplifier is used to input a second reference voltage, the second The output terminal of the operational amplifier is electrically connected to the control circuit.
  • control circuit includes:
  • a controller electrically connected to the detection circuit and the wireless communication circuit respectively;
  • a power supply circuit is electrically connected to the controller and the wireless communication circuit respectively.
  • the wireless communication circuit is a Bluetooth communication circuit.
  • a battery detection system including:
  • Communication connection device used for communication connection with the power battery
  • a host computer is communicatively connected to the communication connection device, and is used to communicate with the power battery through the communication connection device;
  • control circuit of the battery detection device is communicatively connected with the host computer.
  • the communication connection device is a diagnostic connection box.
  • the host computer is a diagnostic instrument.
  • the battery detection device and battery detection system of the present application have the following beneficial effects: when testing the power battery, there is no need for manual direct charging operation, which can ensure personal safety, and there is no need to manually judge whether the power battery is faulty. Improve detection efficiency.
  • Figure 1 is a schematic structural diagram of an application environment provided by an embodiment of the present application.
  • FIG 2 is a schematic structural diagram of the battery detection system and power battery shown in Figure 1;
  • FIG 3 is a schematic structural diagram of the battery detection device shown in Figure 2;
  • Figure 4 is a schematic circuit structure diagram of the battery detection device shown in Figure 2;
  • Figure 5 is a schematic circuit structure diagram of the detection circuit shown in Figure 4.
  • FIG. 6 is a schematic circuit structure diagram of the first voltage sampling circuit and the second voltage sampling circuit shown in FIG. 5 .
  • “communication connection” includes wired communication connections or wireless communication connections, where wired communication connections include various types of communication connections that use tangible media such as metal wires and optical fibers to transmit information.
  • Wireless communication connections include 5G communication, 4G communication, 3G communication, 2G communication, CDMA, Zig-Bee, Bluetooth, wireless broadband (Wi-Fi), ultra-wideband (UWB) and near field communication (NFC), CDMA2000, GSM, Infrared(IR), ISM, RFID, UMTS/3GPPw/HSDPA, WiMAXWi-Fi or ZigBee, etc.
  • detachable connection includes any detachable connection method, such as snap connection, key connection, pin connection, threaded connection, etc.
  • the embodiment of the present application provides an application environment.
  • the application environment includes a battery detection system 100 and a power battery 200.
  • the battery detection system 100 is communicatively connected with the power battery 200.
  • the battery detection system 100 can detect the working parameters of the power battery 200, and detect the power battery 200 according to the working parameters.
  • the power battery 200 includes a battery pack 21 , a battery management system 22 and a switch 23 .
  • the battery pack 21 is a unit configured to store electric power, and may include at least one battery cell (not shown).
  • the battery pack 21 may include one battery cell or multiple battery cells. When the battery pack 21 includes multiple battery cells, the battery cells may be connected in series, in parallel, or both in series and in parallel. The number of battery cells in the battery pack 21 or the connection method of the battery cells may be determined based on the required output voltage and power storage capacity.
  • the battery unit may include a rechargeable secondary battery (except when the secondary battery is a primary battery such as a lead acid battery).
  • battery cells may include nickel-cadmium batteries, nickel metal hydride (NiMH) batteries, lithium-ion batteries, lithium polymer batteries, and the like.
  • the battery management system 22 can monitor and obtain various information about the battery pack 21, such as the current, voltage, temperature, etc. of the battery 21. Based on the obtained information, the battery management system 22 can evaluate the specific status of the battery pack 21 , such as the voltage of the battery pack 21 , the current of the battery pack 21 , the charging capacity of the battery pack 21 , whether the battery pack 21 is fully charged, whether the battery pack 21 Whether overcharging, overcurrent occurs, overvoltage occurs, the degree of deterioration of the battery pack 21, etc.
  • Battery management system 22 may include all types of devices configured to process data, such as a processor that may analyze the status of battery pack 21 and determine whether it is necessary to protect battery pack 21 .
  • the switch 23 is disposed on the voltage output path of the battery pack 21 .
  • the switch 23 can be controlled by the battery management system 22 to turn on or off the voltage output path of the battery pack 21 .
  • the switch 23 may include any electronic switching tube or switching device, such as a field effect transistor, a contactor, a relay, etc.
  • the battery detection system 100 includes a communication connection device 11 , a host computer 12 and a battery detection device 13 .
  • the communication connection device 11 can be connected in communication with the power battery 200 .
  • the communication connection device 11 can be used as a communication connection medium and has a protocol conversion function.
  • the host computer 12 is communicatively connected to the communication connection device 11.
  • the host computer 12 can communicate with the power battery 200 through the communication connection device 11.
  • the host computer 12 transmits data of a specific transmission protocol to the communication connection device 11, and the communication connection device 11 transmits the data.
  • the data of the specific transmission protocol is converted into a protocol, and then the data conforming to the transmission protocol of the power battery 200 is transmitted to the power battery 200 to realize communication between the host computer 12 and the power battery 200 .
  • the host computer 12 When the host computer 12 communicates with the power battery 200, the host computer 12 can transmit control instructions to the power battery 200 through the communication connection device 11, so that the power battery 200 performs corresponding operations according to the control instructions.
  • the host computer 12 is communicatively connected to the battery management system 22 of the power battery 200 through the communication connection device 11.
  • the host computer 12 transmits switch control instructions to the battery management system 22 through the communication connection device 11.
  • the battery management The system 22 controls the switch 23 to turn on according to the switch control instruction to turn on the voltage output path of the battery pack 21 .
  • the battery detection device 13 is communicatively connected with the host computer 12 .
  • the battery detection device 13 can detect the working parameters of the power battery 200 and transmit the working parameters to the host computer 12.
  • the host computer 12 can determine whether a corresponding fault occurs in the power battery 200 based on the working parameters.
  • the battery pack 21 can output voltage, and the battery detection device 13 can detect the output voltage, obtain the output voltage and transmit it to the host computer 12, and the host computer 12 passes the judgment Whether the output voltage is within the normal voltage range is used to detect whether the power battery 200 has an abnormal output voltage fault.
  • test results of the power battery 200 can be directly given by the host computer 12 , eliminating the need to manually determine whether the power battery 200 is faulty, which can lower the maintenance threshold for maintenance technicians and improve maintenance efficiency.
  • communication connection device 11 is a diagnostic connection box.
  • the diagnostic connection box can establish a communication connection between the device to be diagnosed and the diagnostic host, such as the communication connection between the power battery 200 and the host computer 12, to realize the diagnostic function of the diagnostic host for the device to be diagnosed.
  • the host computer 12 is a diagnostic instrument.
  • the diagnostic instrument is a vehicle fault self-diagnosis terminal. Users can use the diagnostic instrument to quickly read faults in the car's electronic control system, and display the fault information on the display screen to quickly identify the location and cause of the fault.
  • the diagnostic instrument can establish a communication connection with the power battery of the vehicle through the communication connection box.
  • the user can operate the diagnostic instrument and input the vehicle VIN (Vehicle Identification Number, vehicle identification number) code or select the unique identification of the power battery provided on the diagnostic tool to determine the power battery that needs to be connected to achieve communication with the power battery.
  • the diagnostic instrument can also process the working parameters sent by the battery detection device 13, and determine whether a fault occurs based on the working parameters.
  • the battery detection device 13 includes a high-voltage harness plug 131 and a detection component 132 .
  • the high-voltage harness plug 131 can be plugged into the output end of the power battery 200.
  • the high-voltage harness plug 131 includes a positive high-voltage line 1311 and a negative high-voltage line 1312.
  • the positive high-voltage line 1311 can be connected to the power battery.
  • the positive electrode of the power battery 200 is electrically connected, and the negative electrode high-voltage line 1312 can be electrically connected to the negative electrode of the power battery 200 .
  • the detection component 132 includes a housing 1321, a detection circuit 1322, a wireless communication circuit 1323 and a control circuit 1324.
  • the detection circuit 1322, the wireless communication circuit 1323 and the control circuit 1324 are all installed in the housing 1321.
  • the housing 1321 is detachably connected to the high-voltage harness plug 131 .
  • the detection circuit 1322 can be electrically connected to the positive high-voltage line 1311 and the negative high-voltage line 1312 respectively.
  • the detection circuit 1322 can detect the operating parameters of the power battery 200, such as insulation resistance value, output voltage, etc.
  • the control circuit 1324 is electrically connected to the detection circuit 1322 and the wireless communication circuit 1323 respectively.
  • the control circuit 1324 can control the wireless communication circuit 1323 to transmit the operating parameters to the host computer 12 .
  • control circuit 1324 includes a controller 13241 and a power supply circuit 13242.
  • the controller 13241 is electrically connected to the detection circuit 1322 and the wireless communication circuit 1323 respectively.
  • the controller 13241 can receive the working parameters of the power battery 200 detected by the detection circuit 1322 and control the wireless communication circuit 1323 to transmit the working parameters to the host computer 12 .
  • the high-voltage harness plug 131 When detecting the power battery 200 in this embodiment, the high-voltage harness plug 131 is plugged into the output end of the power battery 200. The high-voltage harness plug 131 is then electrically connected to the detection circuit 1322. The control circuit 1324 transmits the working parameters detected by the detection circuit 1322 through wireless communication. The communication circuit 1323 transmits it to the host computer 12 for processing and analysis, without manual direct power-on operation, which can ensure personal safety.
  • the controller 13241 can be any general-purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA), microcontroller, ARM (Acorn RISC Machine) or other Programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of these components.
  • the controller 13241 can be any conventional processor, controller, microcontroller or state machine. Controller 13241 may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a DSP, and/or any other such configuration.
  • the power supply circuit 13242 is electrically connected to the controller 13241 and the wireless communication circuit 1323 respectively, and is used to provide power to the controller 13241 and the wireless communication circuit 1323.
  • Wireless communication circuit 1323 supplies power.
  • the power supply circuit 13242 includes a power chip, and the power chip can convert the input voltage into a voltage suitable for the operation of the controller 13241 or the wireless communication circuit 1323, such as a DC voltage of 5V or a DC voltage of 3.3V.
  • the power chip can be a commonly used conversion chip on the market, for example, the conversion chip is the LM1117 chip.
  • the wireless communication circuit 1323 is any circuit that can implement wireless communication functions, such as a Bluetooth circuit, a wireless broadband (Wi-Fi) circuit, an ultra-wideband (UWB) circuit, a near field communication (NFC) circuit, a ZigBee circuit, etc. , in some embodiments, the wireless communication circuit 1323 is a Bluetooth communication circuit.
  • Wi-Fi wireless broadband
  • UWB ultra-wideband
  • NFC near field communication
  • ZigBee ZigBee circuit
  • the high-voltage harness plug 131 further includes a first plug connector 1313 and a second plug connector 1314 .
  • One end of the first connector 1313 can be plugged into the output end of the power battery 200 , and the other end is detachably connected to one end of the positive high-voltage line 1311 and one end of the negative high-voltage line 1312 respectively.
  • One end of the second connector 1314 is electrically connected to the other end of the positive high-voltage line 1311 and the other end of the negative high-voltage line 1312 respectively, and the other end is detachably connected to the housing 1321 .
  • detection circuit 1322 is an insulation detection circuit.
  • the detection circuit 1322 is electrically connected to the positive high-voltage line 1311, the negative high-voltage line 1312 and the controller 13241 respectively.
  • the detection circuit 1322 can obtain the insulation detection parameters of the power battery 200 and output them to the controller 13241.
  • the controller 13241 obtains the insulation resistance by processing the insulation detection parameters. value, the controller 13241 can control the wireless communication circuit 1323 to transmit the insulation resistance value to the host computer 12.
  • the host computer 12 can determine whether the insulation resistance value is within the normal resistance range to detect whether there is a leakage fault in the power battery 200.
  • the detection circuit 1322 includes a first voltage sampling circuit 13221, a second voltage sampling circuit 13222, a switch circuit 13223 and a resistor R1.
  • the first voltage sampling circuit 13221 is electrically connected between the positive high-voltage line 1311 and the ground, and can sample the first voltage value between the positive electrode of the power battery 200 and the ground.
  • the second voltage sampling circuit 13222 is electrically connected between the negative high-voltage line 1312 and the ground, and can sample the second voltage value between the negative electrode of the power battery 200 and the ground.
  • the controller 13241 can perform a difference processing between the first voltage value and the second voltage value to obtain the output voltage of the power battery 200, and then transmit the output voltage to the host computer 12 by controlling the wireless communication circuit 1323. 12 can determine whether the output voltage is within the normal voltage range to detect whether the power battery 200 has an abnormal output voltage fault.
  • the switch circuit 13223 includes a first terminal 5a, a second terminal 5b and a control terminal 5c.
  • the first terminal 5a of the switch circuit 13223 is electrically connected to the positive high-voltage line 1311, and the control terminal 5c of the switch circuit 13223 is electrically connected to the controller 13241.
  • One end of the resistor R1 is electrically connected to the second end 5b of the switching circuit 13223, and the other end of the resistor R1 is grounded.
  • the switch circuit 13223 can be turned on or off under the controller 13241. When the switch circuit 13223 is turned on, the positive electrode of the power battery 200 is grounded through the resistor R1. When the switch circuit 13223 is turned off, the positive electrode of the power battery 200 is not connected through the resistor R1. Ground.
  • the first voltage sampling circuit 13221 can respectively sample the first voltage value corresponding to the switch circuit 13223 in the on and off states
  • the second voltage sampling circuit 13222 can respectively sample the corresponding first voltage value of the switch circuit 13223 in the on and off states.
  • the controller 13241 can calculate the insulation resistance value through the corresponding first voltage value, the second voltage value, the resistance of the resistor R1 and the internal resistance of the first voltage sampling circuit 13221 or the second voltage sampling circuit 13222.
  • the controller 13241 calculates the insulation resistance value according to the following Equation 1 and Equation 2:
  • Ri is the insulation resistance value
  • r is the internal resistance of the first voltage sampling circuit 13221 or the second voltage sampling circuit 13222 (assuming that the internal resistance of the first voltage sampling circuit 13221 is equal to the internal resistance of the second voltage sampling circuit 13222)
  • R 1 is the resistance value of resistor R1
  • U 1 is the first voltage value between the positive electrode of the power battery 200 and the ground when the switch circuit 13223 is turned off
  • U 2 is the negative electrode of the power battery 200 and the ground when the switch circuit 13223 is turned off.
  • the second voltage value between, U 1 ' is the first voltage value between the positive electrode of the power battery 200 and the ground when the switch circuit 13223 is turned on, and U 2 ' is the negative electrode of the power battery 200 and the ground when the switch circuit 13223 is turned on. the second voltage value between.
  • the switching circuit 13223 may include any electronic switching tube or switching device, such as a triode, a field effect transistor, etc.
  • the first voltage sampling circuit 13221 includes a first voltage dividing circuit 61 and a first operational amplifier 62 .
  • the first voltage dividing circuit 61 is electrically connected between the positive high-voltage line 1311 and the ground.
  • the first voltage dividing circuit 61 can divide the voltage between the positive electrode of the power battery 200 and the ground.
  • the first input terminal of the first operational amplifier 62 is electrically connected to the first voltage dividing circuit 61 , the second input terminal of the first operational amplifier 62 can input the first reference voltage VR1 , and the output terminal of the first operational amplifier 62 is connected to the controller 13241 Electrical connection.
  • the first voltage dividing circuit 61 includes a resistor R2 and a resistor R3. One end of the resistor R2 is electrically connected to the positive high-voltage line 1311. The other end of the resistor R2 is electrically connected to the first input end of the first operational amplifier 62 and one end of the resistor R3 respectively. connection, the other end of resistor R3 is connected to ground.
  • the first input terminal of the second operational amplifier 62 can be a non-inverting input terminal or an inverting input terminal.
  • the first input terminal of the second operational amplifier 62 can be a non-inverting input terminal.
  • the second operational amplifier 62 can be a non-inverting input terminal.
  • the second input terminal of the amplifier 62 is an inverting input terminal
  • the first input terminal of the second operational amplifier 62 is an inverting input terminal.
  • the second input terminal of the second operational amplifier 62 is a non-inverting input terminal.
  • the second voltage sampling circuit 13222 includes a second voltage dividing circuit 63 and a second operational amplifier 64 .
  • the second voltage dividing circuit 63 is electrically connected between the negative electrode high voltage line 1312 and the ground.
  • the second voltage dividing circuit 63 can divide the voltage between the negative electrode of the power battery 200 and the ground.
  • the first input terminal of the second operational amplifier 64 is electrically connected to the second voltage dividing circuit 63, and the second input terminal of the second operational amplifier 64 The input terminal can input the second reference voltage VR2, and the output terminal of the second operational amplifier 64 is electrically connected to the controller 13241.
  • the second voltage dividing circuit 63 includes a resistor R4 and a resistor R5.
  • One end of the resistor R4 is electrically connected to the negative high-voltage line 1312, and the other end of the resistor R4 is electrically connected to the first input end of the second operational amplifier 64 and one end of the resistor R5 respectively. connection, the other end of resistor R5 is connected to ground.
  • the first input terminal of the second operational amplifier 64 can be a non-inverting input terminal or an inverting input terminal.
  • the first input terminal of the second operational amplifier 64 can be a non-inverting input terminal.
  • the second operational amplifier 64 can be a non-inverting input terminal.
  • the second input terminal of the amplifier 64 is an inverting input terminal, and the first input terminal of the second operational amplifier 64 is an inverting input terminal.
  • the second input terminal of the second operational amplifier 64 is a non-inverting input terminal.

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  • General Physics & Mathematics (AREA)
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Abstract

L'invention concerne un appareil de détection de batterie (13) et un système de détection de batterie (100). L'appareil de détection de batterie (13) comprend un connecteur mâle-femelle haute tension (131) et un ensemble de détection (132) ; le connecteur mâle-femelle haute tension (131) est utilisé pour s'enficher dans une extrémité de sortie d'une batterie d'alimentation (200) ; le connecteur mâle-femelle haute tension (131) comprend une ligne haute tension positive (1311) et une ligne haute tension négative (1312) ; l'ensemble de détection (132) comprend un boîtier (1321), un circuit de détection (1322) monté dans le boîtier (1321), un circuit de communication sans fil (1323) et un circuit de commande (1324) ; le boîtier (1321) est relié amovible au connecteur mâle-femelle haute tension (131) ; le circuit de détection (1322) est connecté électriquement séparément à la ligne haute tension positive (1311) et à la ligne haute tension négative (1312), et est utilisé pour détecter des paramètres de fonctionnement de la batterie d'alimentation (200) ; le circuit de commande (1324) est connecté électriquement séparément au circuit de détection (1322) et au circuit de communication sans fil (1323), et est utilisé pour commander au circuit de communication sans fil (1323) de transmettre les paramètres de fonctionnement à un ordinateur supérieur (12).
PCT/CN2023/081585 2022-04-02 2023-03-15 Appareil de détection de batterie et système de détection de batterie WO2023185473A1 (fr)

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CN202220756024.XU CN217467117U (zh) 2022-04-02 2022-04-02 一种电池检测装置及电池检测***
CN202220756024.X 2022-04-02

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JP2017173263A (ja) * 2016-03-25 2017-09-28 東京電力ホールディングス株式会社 絶縁抵抗測定装置
CN109765495A (zh) * 2019-01-15 2019-05-17 宁德时代新能源科技股份有限公司 绝缘检测电路及检测方法、电池管理***
CN111722021A (zh) * 2019-03-19 2020-09-29 深圳市星恒通设备有限公司 一种电动车电磁辐射及充电座绝缘电阻检测***
CN110095651A (zh) * 2019-05-13 2019-08-06 奇瑞新能源汽车技术有限公司 一种动力电池在线绝缘电阻检测电路
CN217467117U (zh) * 2022-04-02 2022-09-20 深圳市道通科技股份有限公司 一种电池检测装置及电池检测***

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CN117523940A (zh) * 2024-01-08 2024-02-06 深圳风向标教育资源股份有限公司 动力电池管理***及实训教学平台
CN117523940B (zh) * 2024-01-08 2024-04-19 深圳风向标教育资源股份有限公司 动力电池管理***及实训教学平台

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