WO2021197434A1 - Procédé et système de détermination de la fiabilité de connexion d'une boucle haute tension de véhicule - Google Patents

Procédé et système de détermination de la fiabilité de connexion d'une boucle haute tension de véhicule Download PDF

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Publication number
WO2021197434A1
WO2021197434A1 PCT/CN2021/084980 CN2021084980W WO2021197434A1 WO 2021197434 A1 WO2021197434 A1 WO 2021197434A1 CN 2021084980 W CN2021084980 W CN 2021084980W WO 2021197434 A1 WO2021197434 A1 WO 2021197434A1
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WO
WIPO (PCT)
Prior art keywords
voltage
virtual connection
vehicle
wiring harness
voltage circuit
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PCT/CN2021/084980
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English (en)
Chinese (zh)
Inventor
郭腾飞
李岩
孟伟
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长城汽车股份有限公司
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Publication of WO2021197434A1 publication Critical patent/WO2021197434A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present disclosure relates to the field of vehicle technology, and in particular, to a method and system for determining the connection reliability of a high-voltage circuit of a vehicle.
  • the new energy vehicle is mainly powered by a power battery, and the components of the vehicle are connected in parallel with the power battery, and their connections are generally fixed by bolts. The loosening of the bolts will cause the virtual connection of the joints, which will cause the joints to continue to heat up. In severe cases, it will cause thermal runaway and cause the vehicle to catch fire.
  • the present disclosure aims to propose a method and system for determining the connection reliability of the high-voltage circuit of a vehicle, so as to realize the detection of the reliability of the connection of the high-voltage circuit and determine whether there is a virtual connection.
  • a method for determining the connection reliability of a high-voltage circuit of a vehicle the high-voltage circuit of the vehicle including a power battery management system and an electric component connected in parallel with the power battery management system, the method comprising: calculating the The first difference between the operating voltage and the output voltage of the power battery management system; calculate the wiring harness voltage corresponding to the high-voltage wiring harness between the power-consuming component and the power battery management system; and When the difference does not match the wiring harness voltage, it is determined that the vehicle high-voltage circuit has a virtual connection.
  • the calculating the wiring harness voltage corresponding to the high-voltage wiring harness between the electric component and the power battery management system includes: obtaining the corresponding high-voltage wiring harness between the electric component and the power battery management system And calculating the wiring harness voltage based on the wiring harness impedance and the working current.
  • the method for determining the connection reliability of the vehicle high-voltage circuit further includes: calculating a virtual connection resistance value corresponding to the virtual connection in the vehicle high-voltage circuit; Obtain a comparison result between the resistance value of the virtual connection resistance and the resistance threshold value corresponding to the separation of two adjacent virtual connection fault levels; and determine the current virtual connection fault corresponding to the resistance value of the virtual connection resistance according to the comparison result grade.
  • the determining the current virtual connection fault level corresponding to the resistance value of the virtual connection resistance according to the current comparison result includes: when the comparison result shows that the resistance value of the virtual connection resistance is less than or equal to the resistance threshold value , Determining that the first failure level is used as the current virtual connection failure level, wherein the first failure level is configured to control the vehicle to perform at least one of the following steps: issuing a first prompt indicating that the first level failure exists Information, limiting the driving power of the vehicle to below a preset safe power threshold, reducing the temperature of the virtual connection to below the preset safe temperature threshold, and issuing a second prompt message for prompting the user to perform maintenance; and /Or when the comparison result shows that the resistance value of the virtual connection resistance is greater than the resistance threshold, it is determined that a second fault level is used as the current virtual connection fault level, wherein the second fault level is configured to control the vehicle Perform at least one of the following steps: send out a third prompt message indicating that the second-level fault exists, stop and power off, and send
  • this embodiment also provides a system for determining the connection reliability of a high-voltage circuit of a vehicle.
  • the high-voltage circuit of the vehicle includes a power battery and electrical components connected in parallel with the power battery.
  • the system includes: a difference calculation unit , Used to calculate the first difference between the working voltage of the electrical component and the output voltage of the power battery; a wiring harness voltage calculation unit, used to calculate the high voltage line between the electrical component and the power battery A wiring harness voltage corresponding to the harness; and a virtual connection judging unit for judging that the vehicle high-voltage circuit has a virtual connection when the first difference does not match the wiring harness voltage.
  • the wiring harness voltage calculation unit includes: an impedance current acquisition module for acquiring the wiring harness impedance corresponding to the high-voltage wiring harness between the electrical component and the power battery and the operating current of the electrical component; and
  • the wiring harness voltage calculation module is configured to calculate the wiring harness voltage based on the wiring harness impedance and the working current.
  • the system further includes: a virtual connection resistance value calculation unit, configured to calculate the virtual connection resistance value corresponding to the virtual connection in the vehicle high voltage circuit after the judgment that the vehicle high voltage circuit has a virtual connection;
  • the comparison result obtaining unit is configured to obtain a comparison result between the resistance value of the virtual connection resistance and the resistance threshold value corresponding to the separation of two adjacent virtual connection fault levels; and
  • a failure level determining unit is configured to obtain the comparison result according to the comparison result Determine the current virtual connection fault level corresponding to the resistance value of the virtual connection resistance.
  • the fault level determining unit includes: a first fault level determining module, configured to determine that the first fault level is used when the comparison result shows that the resistance value of the virtual connection resistance is less than or equal to the resistance threshold value
  • the current virtual connection failure level wherein the first failure level is configured to control the vehicle to perform at least one of the following steps: issuing a first prompt message indicating that the first level failure exists, and restricting the vehicle's driving
  • the power is below the preset safe power threshold, the temperature at the virtual connection is reduced to below the preset safe temperature threshold, and the second prompt message for prompting the user to perform maintenance is issued; and/or the second fault level determination module
  • the comparison result shows that the resistance value of the virtual connection resistance is greater than the resistance threshold
  • the second failure level is configured to control the vehicle to execute At least one of the following steps: sending out a third prompt message indicating that the second-level fault exists, stopping and powering off, and sending out a fourth prompt message for prompt
  • the electrical component includes any one of the following: a motor controller, an electric heater, an on-board DC converter, and an electric compressor.
  • this embodiment also provides a machine-readable storage medium having instructions stored on the machine-readable storage medium for causing a machine to execute the above-mentioned method for determining the connection reliability of a high-voltage circuit of a vehicle.
  • the method for determining the connection reliability of the high-voltage circuit of a vehicle can determine whether there is a virtual connection in the high-voltage circuit of the vehicle according to the matching condition of the first difference and the wiring harness voltage, That is, in the case that the first difference value does not match the wiring harness voltage, it is determined that there is a virtual connection in the high-voltage circuit of the vehicle, so as to avoid the occurrence of safety accidents caused by the virtual connection in the high-voltage circuit of the vehicle.
  • FIG. 1 is a block diagram of the connection block diagram of the power supply circuit module composed of the high-voltage system of the whole vehicle according to the embodiment of the disclosure;
  • FIG. 2 is a flowchart of the method for determining the connection reliability of the high-voltage circuit of a vehicle according to an embodiment of the disclosure
  • Fig. 3 is a flowchart of a method for calculating a wiring harness voltage according to an embodiment of the present disclosure
  • FIG. 4 is a logic flow chart of processing after a virtual connection exists in the high-voltage circuit of the vehicle according to the embodiment of the present disclosure.
  • FIG. 5 is a block diagram of the module connection of the system for determining the connection reliability of the high-voltage circuit of a vehicle according to an embodiment of the present disclosure
  • Fig. 6 schematically shows a block diagram of a computing processing device for executing the method according to the present disclosure.
  • Fig. 7 schematically shows a storage unit for holding or carrying program codes for implementing the method according to the present disclosure.
  • the high-voltage circuit of the vehicle is a power supply circuit composed of the high-voltage system of the entire vehicle.
  • Component wherein the electrical component may be any one of a motor controller (MCU, Motor Control Unit), an electric heater PTC, an on-board DC converter DCDC, and an electric compressor CMP.
  • MCU Motor Control Unit
  • the MCU is used to drive the driving motor M to move.
  • an MCU will be used as an example for description.
  • Fig. 2 is a flowchart of a method for determining the connection reliability of a high-voltage circuit of a vehicle according to the first embodiment. As shown in Figure 2, the method includes:
  • S201 Calculate a first difference between the working voltage V 1 of the MCU and the output voltage V 0 of the power battery management system.
  • the power battery management system is shown in Figure 1, which is composed of multiple power batteries connected in series and their connected peripheral circuits.
  • the peripheral circuits include a main positive relay, a precharge relay, a precharge resistor, a current sensor, and a main Negative relay.
  • the precharge relay and the precharge resistor are connected in series, and are connected in parallel with the main positive relay to the positive end of the power battery;
  • the current sensor is connected in series with the main negative relay and connected to the power The negative terminal of the battery.
  • Output voltage V 0 of the battery management system can be obtained by a first voltmeter.
  • the working voltage V 1 of the MCU is the voltage value divided by the MCU in parallel on both sides of the power battery, which can be measured by assuming that the second voltmeters on both sides of the MCU are measured. Then, the first difference V 2 between the working voltage V 1 of the MCU and the output voltage V 0 of the power battery management system obtained by the above measurement is calculated, and the specific calculation formula is as shown in (1):
  • V 2 V 0 -V 1 (1)
  • the wiring harness voltage is the voltage occupied by the high-voltage wiring harness, which is expressed as the loss of the electrical energy output by the power battery management system on the line.
  • Fig. 3 is a calculation method of the wiring harness voltage. As shown in Figure 3, it includes:
  • the working current of the MCU is the current value I 1 flowing through the MCU.
  • the matching of the first difference and the wiring harness voltage indicates that the first difference is equal to the wiring harness voltage, which proves that there is no virtual connection in the high-voltage circuit of the vehicle and the high-voltage wiring harness is normal.
  • this embodiment mainly focuses on related operations performed when the first difference does not match the wiring harness voltage, that is, the first difference is greater than the wiring harness voltage. Once there is a mismatch, it indicates that the vehicle There is a virtual connection in the high-voltage circuit.
  • the virtual connection can exist at point A as shown in Figure 1, but it can also exist in other positions of the circuit.
  • the embodiment of the present disclosure once a virtual connection occurs, it indicates that the high-voltage circuit has a certain potential safety hazard, as shown in FIG. 4, based on this, the embodiment further has the following improvements.
  • the resistance value of the virtual connection resistance actually includes the high-voltage wiring harness impedance and the virtual connection resistance R.
  • the calculation formula is as shown in (3) below.
  • the resistance threshold R 1 can be one or more. In the case of multiple resistance thresholds, it can be considered that the virtual connection failure level is set to multiple, and each resistance threshold represents two adjacent virtual connections. The resistance value at the fault level divider. For ease of description in the present disclosure, in the following embodiments, only one resistance threshold is set.
  • S403 Determine the current virtual connection fault level corresponding to the resistance value of the virtual connection resistance according to the comparison result.
  • the current virtual connection failure level corresponds to two, which are the first virtual connection failure level, that is, the low failure level, and the second virtual connection failure level, that is, the high failure level.
  • the virtual connection resistance threshold refers to the resistance value at the separation between the low fault level and the high fault level.
  • the vehicle is controlled to perform at least one of the following steps: sending out the first prompt message indicating that the first level fault exists, For example, through the indicator on the dashboard or through the on-board voice playback unit to play the voice about "there is a low-level fault with virtual connection”; limit the driving power of the vehicle below the preset safe power threshold, and limit the vehicle The driving power of the vehicle in turn avoids that the vehicle output power is too high and the heat at the virtual connection is too high.
  • the safe power can be selected according to the actual situation, or it can be set according to the calculated virtual connection resistance, such as preset The corresponding relationship between the resistance value range and the safe power value, the safe power value corresponding to the resistance value range where the virtual resistance value is located, and the safe power value is used as the safe power threshold.
  • the above method can be better Satisfying the user's driving experience does not cause overheating; reducing the temperature of the virtual connection to below a preset safe temperature threshold, the cooling method can be achieved by the above-mentioned setting of the safe power value, or an external device can be used to achieve cooling;
  • a second prompt message for prompting the user to perform maintenance is issued.
  • the second prompt message is similar to the first prompt message, and can be indicated through the indicator on the dashboard or through the on-board voice playback unit. "Connect" voice playback.
  • the vehicle is controlled to perform at least one of the following steps that are compatible with the high failure level:
  • the third prompt information of the second level fault for example, through the indicator on the dashboard or through the on-board voice player unit to play the voice about "there is a high-level fault with virtual connection"; stop and power off, that is, stop driving the said Vehicles; send out the fourth prompt message for prompting the user to perform maintenance immediately.
  • the fourth prompt message can be a display lamp indication or a language playback unit to play related languages, for example, "the virtual connection failure is serious, and immediate maintenance is required.” .
  • the reliability of the high-voltage circuit connection is judged based on the matching of the calculation results.
  • the calculated first difference does not match the wiring harness voltage
  • the difference value determines the severity of the virtual connection condition, and controls the vehicle to perform associated operations according to the control logic corresponding to the fault level matched by the difference value to avoid ablation of the high-voltage wiring harness due to the virtual connection, and then Ensure the safety of automobiles and vehicles.
  • FIG. 5 is a block diagram of the module connection of a system for determining the connection reliability of the high-voltage circuit of a vehicle according to the second embodiment.
  • the vehicle high-voltage circuit includes a power battery and electrical components connected in parallel with the power battery, and the system for determining the connection reliability of the vehicle high-voltage circuit includes: a difference calculation unit 1 for calculating The first difference between the working voltage of the electrical component and the output voltage of the power battery; the wiring harness voltage calculation unit 2 is used to calculate the corresponding high-voltage wiring harness between the electrical component and the power battery And a virtual connection judging unit 3 for judging that the vehicle high-voltage circuit has a virtual connection when the first difference does not match the wiring harness voltage.
  • the wiring harness voltage calculation unit 2 includes: an impedance current acquisition module 21 for acquiring the wiring harness impedance corresponding to the high-voltage wiring harness between the electrical component and the power battery and the operating current of the electrical component And a wiring harness voltage calculation module 22 for calculating the wiring harness voltage based on the wiring harness impedance and the operating current.
  • the system further includes: a virtual connection resistance value calculation unit 4, which is used to calculate the virtual connection resistance value corresponding to the virtual connection in the vehicle high voltage circuit after the judgment that the vehicle high voltage circuit has a virtual connection
  • the comparison result obtaining unit 5 is used to obtain the comparison result between the resistance value of the virtual connection resistance and the resistance threshold values corresponding to the two adjacent virtual connection fault level separation locations; and the fault level determination unit 6 is used to obtain the comparison result according to the The comparison result determines the current virtual connection fault level corresponding to the resistance value of the virtual connection resistance.
  • the fault level determining unit includes: a first fault level determining module 61, configured to determine the first fault level when the comparison result shows that the resistance value of the virtual connection resistance is less than or equal to the resistance threshold
  • the first failure level is configured to control the vehicle to perform at least one of the following steps: issuing a first prompt message indicating that the first level failure exists, restricting the vehicle
  • the driving power is below the preset safe power threshold, the temperature at the virtual connection is reduced to below the preset safe temperature threshold, and the second prompt message for prompting the user to perform maintenance is issued; and/or the second fault level is determined Module 62, when the comparison result shows that the resistance of the virtual connection resistance is greater than the resistance threshold, determine that a second fault level is used as the current virtual connection fault level, wherein the second fault level is configured to control the The vehicle performs at least one of the following steps: sending out a third prompt message indicating that the second-level fault exists, stopping and powering off, and sending out a fourth prompt message for prompting the user
  • the electrical component includes any one of the following: a motor controller, an electric heater, an on-board DC converter, and an electric compressor.
  • the system for determining the connection reliability of the high-voltage circuit of the vehicle has the same or similar technical solutions and technical effects as those in the first embodiment compared with the prior art, which will not be repeated here.
  • the system for determining the connection reliability of the high-voltage circuit of a vehicle includes a processor and a memory, and the execution steps of the method for determining the connection reliability of the high-voltage circuit of a vehicle are stored in the memory as a program unit and executed by the processor.
  • the above-mentioned program units stored in the memory implement the corresponding functions.
  • the processor contains the kernel, and the kernel calls the corresponding program unit from the memory.
  • One or more kernels can be set, and the connection reliability of the high-voltage circuit of the vehicle can be determined by adjusting the kernel parameters.
  • the memory may include non-permanent memory in computer-readable media, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM), and the memory includes at least one Memory chip.
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash random access memory
  • the embodiment of the present disclosure provides a machine-readable storage medium having instructions stored on the machine-readable storage medium, and the instructions are used to make a machine execute the above-mentioned method for determining the connection reliability of a high-voltage circuit of a vehicle.
  • the embodiment of the present disclosure provides a processor, the processor is used to run a program, wherein the method for determining the connection reliability of a high-voltage circuit of a vehicle is executed when the program is running.
  • the present application also provides a computer program product, which when executed on a data processing device, is suitable for executing a program that initializes the steps of the method for determining the connection reliability of the vehicle's high-voltage circuit with the electric motor in the first embodiment.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • the various component embodiments of the present disclosure may be implemented by hardware, or by software modules running on one or more processors, or by a combination of them.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the computing processing device according to the embodiments of the present disclosure.
  • DSP digital signal processor
  • the present disclosure can also be implemented as a device or device program (for example, a computer program and a computer program product) for executing part or all of the methods described herein.
  • Such a program for realizing the present disclosure may be stored on a computer-readable medium, or may have the form of one or more signals.
  • Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.
  • FIG. 6 shows a computing processing device that can implement the method according to the present disclosure.
  • the computing processing device traditionally includes a processor 1010 and a computer program product in the form of a memory 1020 or a computer readable medium.
  • the memory 1020 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • the memory 1020 has a storage space 1030 for executing program codes 1031 of any method steps in the above methods.
  • the storage space 1030 for program codes may include various program codes 1031 respectively used to implement various steps in the above method. These program codes can be read from or written into one or more computer program products.
  • Such computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards, or floppy disks.
  • Such a computer program product is usually a portable or fixed storage unit as described with reference to FIG. 7.
  • the storage unit may have storage segments, storage spaces, etc., arranged similarly to the memory 1020 in the computing processing device of FIG. 6.
  • the program code can be compressed in an appropriate form, for example.
  • the storage unit includes computer-readable code 1031', that is, code that can be read by a processor such as 1010, which, when run by a computing processing device, causes the computing processing device to execute the method described above. The various steps.
  • the memory may include non-permanent memory in a computer readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM).
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • Computer-readable media includes permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • the information can be computer readable instructions, data structures, program modules, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.
  • any reference signs placed between parentheses should not be constructed as a limitation to the claims.
  • the word “comprising” does not exclude the presence of elements or steps not listed in the claims.
  • the word “a” or “an” preceding an element does not exclude the presence of multiple such elements.
  • the present disclosure can be realized by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same hardware item.
  • the use of the words first, second, and third, etc. do not indicate any order. These words can be interpreted as names.

Abstract

Procédé de détermination d'une fiabilité de connexion d'une boucle haute tension de véhicule. La boucle haute tension de véhicule comprend un système de gestion de batterie d'alimentation, et un composant de consommation d'énergie connecté en parallèle au système de gestion de batterie d'alimentation. Le procédé consiste à : calculer une première valeur de différence entre une tension de travail du composant de consommation d'énergie et une tension de sortie du système de gestion de batterie d'alimentation (S201) ; le calcul d'une tension de faisceau de câblage correspondant à un faisceau de câblage haute tension entre le composant de consommation d'énergie et le système de gestion de batterie d'alimentation (S202) ; et lorsque la première valeur de différence n'est pas en correspondance avec la tension de faisceau de câblage, déterminer que la boucle haute tension de véhicule est dans une connexion virtuelle (S203). L'invention concerne également un système permettant de déterminer la fiabilité de connexion de la boucle haute tension de véhicule, un dispositif de traitement informatique, un programme informatique et un support lisible par ordinateur. Le procédé peut détecter la fiabilité de connexion de la boucle haute tension et déterminer si une connexion virtuelle existe.
PCT/CN2021/084980 2020-04-01 2021-04-01 Procédé et système de détermination de la fiabilité de connexion d'une boucle haute tension de véhicule WO2021197434A1 (fr)

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CN202010249524.XA CN112677768B (zh) 2020-04-01 2020-04-01 确定车辆高压回路的连接可靠性的方法及系统

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CN115166603A (zh) * 2022-06-24 2022-10-11 北京天能继保电力科技有限公司 电网电压互感器二次回路接线端子虚接判断方法及装置
CN116527720A (zh) * 2023-06-29 2023-08-01 深圳艾为电气技术有限公司 用于电动压缩机的智能排障策略获取方法及装置

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CN113733915B (zh) * 2021-09-07 2023-12-19 东风汽车集团股份有限公司 一种高压回路热点保护方法及相关设备
CN114379372B (zh) * 2022-02-21 2023-10-31 中国第一汽车股份有限公司 一种高压回路主动安全监测与控制方法

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