CN115064817A - Method, device and system for preventing thermal runaway - Google Patents

Method, device and system for preventing thermal runaway Download PDF

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CN115064817A
CN115064817A CN202210705324.XA CN202210705324A CN115064817A CN 115064817 A CN115064817 A CN 115064817A CN 202210705324 A CN202210705324 A CN 202210705324A CN 115064817 A CN115064817 A CN 115064817A
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preset
battery cell
voltage
single battery
thermal runaway
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吴杰余
肖寒
倪铮
刘爽
刘坤
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Dongfeng Motor Group Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides a method, a device and a system for preventing thermal runaway, wherein the system is connected with a battery pack, the battery pack comprises a plurality of battery modules, each battery module comprises a plurality of single battery cores, and the system comprises: the acquisition module comprises a voltage sampling circuit corresponding to each single battery cell and a plurality of temperature sensors in each battery module, and is used for acquiring the voltage and the ambient temperature of each single battery cell; the controller is used for judging whether the voltage and the ambient temperature of each single battery cell meet preset thermal runaway conditions or not to obtain a judgment result, and generating a control instruction when the judgment result shows that a target single battery cell meets the preset thermal runaway conditions; the thermal runaway control module is used for controlling the cooling mechanism to perform cooling operation on the target single battery cell based on the control instruction; the cooling mechanism is connected with the battery pack, and measures for cooling are started when the battery cells are monitored to be about to generate thermal runaway, so that the thermal runaway is actively prevented, and the safety of the battery pack is ensured.

Description

一种防止热失控的方法、装置及系统A method, device and system for preventing thermal runaway

技术领域technical field

本发明涉及电池包技术领域，尤其涉及一种防止热失控的方法、装置及系统。The present invention relates to the technical field of battery packs, and in particular, to a method, device and system for preventing thermal runaway.

背景技术Background technique

新能源汽车发展越来越快，电池包的使用安全也越来越引起重视，为了避免电池热失控而引起电池包起火事故，从而减少整车及驾乘人员的安全风险，采取了很多措施。比如，在电芯之间增加隔热垫、增加耐热隔热板以延缓传递过程、在电池包内增设消防灭火弹，监测电池包的热失控，启动灭火弹熄灭明火，预测热失控等等。The development of new energy vehicles is getting faster and faster, and more and more attention is paid to the safety of the use of battery packs. In order to avoid the battery pack fire accident caused by the thermal runaway of the battery, so as to reduce the safety risk of the whole vehicle and the driver and passengers, many measures have been taken. For example, adding thermal insulation pads between cells, adding heat-resistant thermal insulation boards to delay the transfer process, adding fire extinguishing bombs in battery packs, monitoring thermal runaway of battery packs, starting fire extinguishing bombs to extinguish open flames, predicting thermal runaways, etc. .

但是，上述的措施无法主动阻止热失控，因此，如何有效地预防热失控是目前亟待解决的技术问题。However, the above measures cannot actively prevent thermal runaway. Therefore, how to effectively prevent thermal runaway is a technical problem that needs to be solved urgently.

发明内容SUMMARY OF THE INVENTION

鉴于上述问题，提出了本发明以便提供一种克服上述问题或者至少部分地解决上述问题的防止热失控的方法、装置及系统。In view of the above problems, the present invention is proposed to provide a method, apparatus and system for preventing thermal runaway which overcomes the above problems or at least partially solves the above problems.

第一方面，本发明提供了一种防止热失控的系统，连接电池包，所述电池包包括多个电池模组，每个电池模组包括多个单体电芯，包括：In a first aspect, the present invention provides a system for preventing thermal runaway, connecting a battery pack, the battery pack including a plurality of battery modules, each battery module including a plurality of single cells, including:

采集模块，包括：对应每个单体电芯的电压采样线路以及位于每个电池模组内的多个温度传感器，用于采集各个单体电芯的电压和周围温度；The acquisition module includes: a voltage sampling circuit corresponding to each single cell and a plurality of temperature sensors located in each battery module for collecting the voltage and ambient temperature of each single cell;

控制器，用于对各个单体电芯的电压和周围温度是否满足预设的热失控条件进行判断，获得判断结果，在所述判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令；The controller is used to judge whether the voltage and ambient temperature of each single cell meet the preset thermal runaway conditions, and obtain a judgment result, where the judgment result indicates that a target single cell meets the preset thermal runaway conditions When the control instruction is generated;

热失控控制模块，用于基于所述控制指令，控制降温机构对所述目标单体电芯执行降温操作；a thermal runaway control module, configured to control the cooling mechanism to perform a cooling operation on the target single cell based on the control instruction;

降温机构，连接电池包。Cooling mechanism, connect the battery pack.

优选的，所述预设的热失控条件包括：Preferably, the preset thermal runaway conditions include:

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的最高温度大于预设温度，且持续时长达到第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration; or

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温差大于预设温差，且持续时长到达第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration; or

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温度变化速率大于预设速率，且持续时长大于第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the temperature change rate around the single cell is greater than the preset rate, and the duration is greater than the second preset duration; or

单体电芯周围的最高温度大于所述预设温度，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

单体电芯的电压小于所述预设电压，且持续时长达到第一预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

单体电芯周围的温差大于所述预设温差，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

温度传感器失效的数量大于或等于2，且单体电芯的电压采样线路出现故障的数量大于或等于1。The number of failures of temperature sensors is greater than or equal to 2, and the number of failures of voltage sampling lines of single cells is greater than or equal to 1.

优选的，所述控制器还用于：Preferably, the controller is also used for:

判断所述目标单体电芯的电压和周围温度是否满足预设的停止降温条件，若是，生成休眠信号；Judging whether the voltage and ambient temperature of the target single cell meet the preset temperature-stopping conditions, and if so, generating a sleep signal;

所述热失控控制模块，还用于基于所述休眠信号，控制所述降温机构停止降温操作。The thermal runaway control module is further configured to control the cooling mechanism to stop the cooling operation based on the sleep signal.

优选的，所述停止降温条件，包括：Preferably, the conditions for stopping cooling include:

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的最高温度小于预设温度，且持续时长达到第四预设时长；或者The voltage of the single cell is within the normal voltage range, and the duration reaches the third preset duration, while the highest temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration; or

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温度变化速率小于预设速率，且持续时长达到第四预设时长；或者The voltage of the single cell is in the normal voltage range, and the duration reaches the third preset duration, and the temperature change rate around the single cell is less than the preset rate, and the duration reaches the fourth preset duration; or

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温差小于预设温差，且持续时长达到第四预设时长；或者The voltage of the single cell is within the normal voltage range, and the duration reaches the third preset duration, while the temperature difference around the single cell is less than the preset temperature difference, and the duration reaches the fourth preset duration; or

单体电芯周围的最高温度小于预设温度，且持续时长达到第第四预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The maximum temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration, and the number of faults in the voltage sampling circuit of the single cell is 0; or

单体电芯处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The single cell is in the normal voltage range, and the duration reaches the third preset duration, and the number of faults in the voltage sampling line of the single cell is 0; or

单体电芯周围的温差小于预设温差，且持续时长到达第四预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The temperature difference around the single cell is less than the preset temperature difference, and the duration reaches the fourth preset duration, and the number of faults in the voltage sampling circuit of the single cell is 0; or

温度传感器失效数量小于或等于1，且单体电芯的电压采样线路的故障数量为0。The number of failures of the temperature sensor is less than or equal to 1, and the number of failures of the voltage sampling line of the single cell is 0.

优选的，每个单体电芯具有唯一标识码，所述控制器还用于：Preferably, each single cell has a unique identification code, and the controller is further used for:

在确定目标单体电芯的电压和周围温度满足预设的热失控条件之后，确定目标单体电芯的坐标，所述坐标为所述目标单体电芯对应的唯一标识码；After determining that the voltage and ambient temperature of the target single cell meet the preset thermal runaway conditions, determine the coordinates of the target single cell, where the coordinates are the unique identification code corresponding to the target single cell;

基于所述目标单体电芯的坐标，生成控制指令。Based on the coordinates of the target single cell, a control command is generated.

优选的，所述降温机构包括：Preferably, the cooling mechanism includes:

高压气体发生装置，用于产生高压气体；High-pressure gas generating device for generating high-pressure gas;

涡轮管，用于将所述高压气体分离出冷气流；a turbine tube for separating the high-pressure gas from the cold gas stream;

对应每个电池模组的输气管，用于将所述冷气流输送至相应的电池模组；an air pipe corresponding to each battery module, used to transport the cold air flow to the corresponding battery module;

电磁阀，设置在所述输气管的出气支路上，通过开启所述电磁阀，实现对目标单体电芯所处的电池模组的降温操作。The solenoid valve is arranged on the gas outlet branch of the gas delivery pipe, and by opening the solenoid valve, the cooling operation of the battery module where the target single cell is located is realized.

第二方面，本发明还提供了一种防止热失控的方法，包括：In a second aspect, the present invention also provides a method for preventing thermal runaway, comprising:

获取电池包内各个电池模组内的单体电芯的电压和周围温度；Obtain the voltage and ambient temperature of the single cells in each battery module in the battery pack;

对各个单体电芯的电压和周围温度是否满足设定的热失控条件进行判断，获得判断结果；Judging whether the voltage and ambient temperature of each single cell meet the set thermal runaway conditions, and obtaining the judgment result;

在所述判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令，以控制连接电池包的降温机构对所述目标单体电芯执行降温操作。When the judgment result indicates that a target single cell meets the preset thermal runaway condition, a control instruction is generated to control the cooling mechanism connected to the battery pack to perform a cooling operation on the target single cell.

第三方面，本发明还提供了一种防止热失控的装置，包括：In a third aspect, the present invention also provides a device for preventing thermal runaway, comprising:

获取模块，用于获取电池包内各个电池模组内的单体电芯的电压和周围温度；The acquisition module is used to acquire the voltage and ambient temperature of the single cell in each battery module in the battery pack;

判断模块，用于对各个单体电芯的电压和周围温度是否满足设定的热失控条件进行判断，获得判断结果；The judgment module is used to judge whether the voltage and ambient temperature of each single cell meet the set thermal runaway condition, and obtain the judgment result;

控制模块，用于在所述判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令，以控制连接电池包的降温机构对所述目标单体电芯执行降温操作。The control module is configured to generate a control instruction to control the cooling mechanism connected to the battery pack to perform a cooling operation on the target single cell when the judgment result indicates that the target single cell meets the preset thermal runaway condition.

第四方面，本发明还提供了一种新能源汽车，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现上述的方法步骤。In a fourth aspect, the present invention also provides a new energy vehicle, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, the processor implementing the above method steps when executing the program .

第五方面，本发明还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述方法步骤。In a fifth aspect, the present invention further provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the above-mentioned method steps are implemented.

本发明实施例中的一个或多个技术方案，至少具有如下技术效果或优点：One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

本发明提供了一种防止热失控的系统，该系统连接电池包，该电池包包括多个电池模组，每个电池模组包括多个单体电芯，该系统包括：采集模块，包括，对应每个单体电芯的电压采样线路以及位于每个电池模组内的多个温度传感器，用于采集各个单体电芯的电压和周围温度；控制器，用于对各个单体电芯的电压和周围温度是否满足预设的热失控条件进行判断，获得判断结果，在判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令；热失控控制模块，用于基于该控制指令，控制降温机构对目标单体电芯执行降温操作；降温机构，连接电池包，进而通过对各个单体电芯的电压和周围温度进行监测，并在单体电芯即将发生热失控时，尽早开启降温措施，以主动防止热失控，确保电池包的安全性。The present invention provides a system for preventing thermal runaway, the system is connected to a battery pack, the battery pack includes a plurality of battery modules, each battery module includes a plurality of single cells, the system includes: a collection module, including, The voltage sampling circuit corresponding to each single cell and multiple temperature sensors located in each battery module are used to collect the voltage and ambient temperature of each single cell; the controller is used to monitor each single cell It is judged whether the voltage and ambient temperature of the battery meet the preset thermal runaway conditions, and the judgment result is obtained. When the judgment result indicates that a target single cell meets the preset thermal runaway conditions, a control command is generated; the thermal runaway control module is used for Based on the control command, the cooling mechanism is controlled to perform the cooling operation on the target single cell; the cooling mechanism is connected to the battery pack, and then monitors the voltage and ambient temperature of each single cell, and detects when the single cell is about to heat up. When out of control, start cooling measures as soon as possible to actively prevent thermal runaway and ensure the safety of battery packs.

附图说明Description of drawings

通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在整个附图中，用相同的参考图形表示相同的部件。在附图中：Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same components are represented by the same reference figures throughout the drawings. In the attached image:

图1示出了本发明实施例中防止热失控的系统的结构示意图；FIG. 1 shows a schematic structural diagram of a system for preventing thermal runaway in an embodiment of the present invention;

图2示出了本发明实施例中降温机构的结构示意图；2 shows a schematic structural diagram of a cooling mechanism in an embodiment of the present invention;

图3示出了本发明实施例中防止热失控的方法的步骤流程示意图；FIG. 3 shows a schematic flowchart of steps of a method for preventing thermal runaway in an embodiment of the present invention;

图4示出了本发明实施例中防止热失控的装置的结构示意图；FIG. 4 shows a schematic structural diagram of a device for preventing thermal runaway in an embodiment of the present invention;

图5示出了本发明实施例中实现防止热失控的方法的新能源汽车的示意图。FIG. 5 shows a schematic diagram of a new energy vehicle implementing the method for preventing thermal runaway in an embodiment of the present invention.

具体实施方式Detailed ways

下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

实施例一Example 1

本发明的实施例提供了一种防止热失控的系统，如图1所示，该系统连接电池包A，该电池包A包括多个电池模组，每个电池模组包括多个单体电芯。具体地，该系统包括：An embodiment of the present invention provides a system for preventing thermal runaway. As shown in FIG. 1 , the system is connected to a battery pack A. The battery pack A includes a plurality of battery modules, and each battery module includes a plurality of single battery cells. core. Specifically, the system includes:

采集模块101，包括：对应每个单体电芯电压采样线路以及位于每个电池模组内的多个温度传感器，用于采集各个单体电芯的电压和周围温度；The acquisition module 101 includes: a voltage sampling circuit corresponding to each single cell and a plurality of temperature sensors located in each battery module for collecting the voltage and ambient temperature of each single cell;

控制器102，用于对各个单体电芯的电压和周围温度是否满足预设的热失控条件进行判断，获得判断结果，在判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令；The controller 102 is configured to judge whether the voltage and ambient temperature of each single cell meet the preset thermal runaway condition, and obtain a judgment result. When the judgment result indicates that a target single cell meets the preset thermal runaway condition , generate control instructions;

热失控控制模块103，用于基于控制指令，控制降温机构对目标单体电芯执行降温操作；The thermal runaway control module 103 is configured to control the cooling mechanism to perform a cooling operation on the target single cell based on the control instruction;

降温机构104，该降温机构104连接电池包A。A cooling mechanism 104, the cooling mechanism 104 is connected to the battery pack A.

为了能够在电池包A出现热失控的情况下尽快对电池包A进行降温，通过采集模块中的温度传感器以及电压采样线路对电池包A内的各个单体电芯的温度和电压进行监测，在监测倒有目标单体电芯满足热失控条件时，及时控制连接电池包A的降温机构进行降温操作，进而有效防止热失控。In order to cool down the battery pack A as soon as possible in the case of thermal runaway of the battery pack A, the temperature and voltage of each single cell in the battery pack A are monitored through the temperature sensor in the acquisition module and the voltage sampling circuit. When the target single cell meets the thermal runaway condition, the cooling mechanism connected to the battery pack A is controlled in time to perform the cooling operation, thereby effectively preventing thermal runaway.

在一种可选的实施方式中，该预设的热失控条件包括如下任意一种：In an optional embodiment, the preset thermal runaway condition includes any one of the following:

第一，单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的最高温度大于预设温度，且持续时长达到第二预设时长。First, the voltage of the single cell is lower than the preset voltage, and the duration reaches the first preset duration, and the highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration.

第二，单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温差大于预设温差，且持续时长达到第二预设时长。Second, the voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, while the temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration.

第三，单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温度变化速率大于预设速率，且持续时长大于第二预设时长。Third, the voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, while the temperature change rate around the single cell is greater than the preset rate, and the duration is greater than the second preset duration.

第四，单体电芯周围的最高温度大于所述预设温度，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1。Fourth, the highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1.

第五，单体电芯的电压小于所述预设电压，且持续时长达到第一预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1。Fifth, the voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the number of faults in the voltage sampling line of the single cell is greater than or equal to 1.

第六，单体电芯周围的温差大于所述预设温差，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1。Sixth, the temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1.

第七，温度传感器失效的数量大于或等于2，且单体电芯的电压采样线路出现故障的数量大于或等于1。Seventh, the number of failures of temperature sensors is greater than or equal to 2, and the number of failures of voltage sampling lines of single cells is greater than or equal to 1.

其中，在采集模块101采集到单体电芯存在上述任意一种情况时，控制器102均将其确定为单体电芯满足预设的热失控条件。Wherein, when the collection module 101 collects that the single cell has any of the above-mentioned conditions, the controller 102 determines that the single cell meets the preset thermal runaway condition.

该预设的热失控条件不仅可以对单体电芯的电压和周围温度进行监测，从而判断是否出现热失控，而且，还可以基于单体电芯的电压及周围温度，确定电压采样线路的出现故障的数量以及温度传感器出现失效的数量，基于该数量或者将数量与温度结合或者数量与电压结合，判断是否出现热失控，进而能更全面地对热失控的情况进行掌握。The preset thermal runaway condition can not only monitor the voltage and ambient temperature of the single cell to determine whether thermal runaway occurs, but also determine the occurrence of the voltage sampling circuit based on the voltage and ambient temperature of the single cell. The number of faults and the number of failures of the temperature sensor, based on the number or the combination of the number and the temperature or the combination of the number and the voltage, to determine whether thermal runaway occurs, and then to more comprehensively grasp the thermal runaway situation.

在控制器102确定有目标单体电芯的电压和周围温度满足预设的热失控条件时，生成控制指令。The control command is generated when the controller 102 determines that the voltage and ambient temperature of the target single cell meet the preset thermal runaway condition.

该控制指令传输至热失控控制模块103，由该热失控控制模块103基于该控制指令，控制降温机构对目标单体电芯执行降温操作。The control command is transmitted to the thermal runaway control module 103, and the thermal runaway control module 103 controls the cooling mechanism to perform a cooling operation on the target single cell based on the control command.

在一种可选的实施方式中，每个单体电芯具有唯一标识码。该控制器102能够在确定目标单体电芯的电压和周围温度满足预设的热失控条件之后，确定目标单体电芯的坐标，坐标为目标单体电芯对应的唯一标识码。In an optional embodiment, each single cell has a unique identification code. The controller 102 can determine the coordinates of the target single cell after determining that the voltage and ambient temperature of the target single cell meet the preset thermal runaway conditions, and the coordinates are the unique identification code corresponding to the target single cell.

比如，确定发生热失控的单体电芯为编号为24的单体电芯，将24定位该目标表单体电芯的坐标。根据编号，确定是位于第二电池模组的第四单体电芯出现了热失控。那么，在降温机构对目标单体电芯执行降温操作时，控制对应于该坐标的单体电芯所处的电池模组进行降温操作。For example, it is determined that the single cell with thermal runaway is the single cell numbered 24, and 24 is positioned as the coordinates of the target single cell. According to the serial number, it is determined that the thermal runaway occurs in the fourth single cell located in the second battery module. Then, when the cooling mechanism performs the cooling operation on the target single cell, the battery module where the single cell corresponding to the coordinate is located is controlled to perform the cooling operation.

下面具体为降温机构进行详细描述：The following is a detailed description of the cooling mechanism:

如图2所示，该降温机构包括：高压气体发生装置201，用于产生高压气体；涡轮管202，用于将高压气体分离出冷气流；对应每个电池模组的输气管203，用于将冷气流输送至相应的电池模组；电磁阀204，设置在输入管的出气支路上，通过开启电磁阀204，实现对目标单体电芯所处的电池模组的降温操作。As shown in FIG. 2 , the cooling mechanism includes: a high-pressure gas generating device 201 for generating high-pressure gas; a turbine tube 202 for separating the high-pressure gas into a cold gas flow; a gas delivery pipe 203 corresponding to each battery module for The cold airflow is delivered to the corresponding battery module; the solenoid valve 204 is arranged on the air outlet branch of the input pipe, and by opening the solenoid valve 204, the cooling operation of the battery module where the target single cell is located is realized.

在确定目标单体电芯出现热失控时，由该热失控控制模块103控制高压气体发生装置201产生高压气体，使得涡轮管202将该高压气体分离出冷气流，经暑期管道203到达相应的电池模组，开启相应的电磁阀204，对目标单体电芯所处的电池模组进行降温。When it is determined that the target single cell is thermally out of control, the thermal runaway control module 103 controls the high-pressure gas generator 201 to generate high-pressure gas, so that the turbine tube 202 separates the high-pressure gas into a cold airflow, and reaches the corresponding battery through the summer pipe 203 module, and open the corresponding solenoid valve 204 to cool the battery module where the target single cell is located.

采用该降温机构，不仅可以针对性地对出现热失控的电池模组进行有效降温，而且，采用该涡轮管202的降温效果更佳。By adopting the cooling mechanism, not only can the battery module with thermal runaway be effectively cooled in a targeted manner, but also the cooling effect of the turbine tube 202 is better.

上述是控制降温机构104进行降温的操作，在出现热失控的目标单体电芯恢复正常时，还可以控制降温机构104停止降温。具体地，控制器102还用于判断目标单体电芯的电压和周围温度是否满足预设的停止降温条件，若是，生成休眠信号；该热失控控制模块104，还用于基于该休眠信号，控制降温机构对目标单体电芯执行停止降温动作。The above is the operation of controlling the cooling mechanism 104 to lower the temperature. When the target single cell with thermal runaway returns to normal, the cooling mechanism 104 can also be controlled to stop cooling. Specifically, the controller 102 is further configured to determine whether the voltage and ambient temperature of the target single cell meet the preset temperature-stopping conditions, and if so, generate a sleep signal; the thermal runaway control module 104 is further configured to, based on the sleep signal, Control the cooling mechanism to stop the cooling action on the target single cell.

具体地，该预设的停止降温条件与预设的热失控条件类似，包括如下任意一种：Specifically, the preset temperature-stopping condition is similar to the preset thermal runaway condition, including any one of the following:

第一，单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的最高温度小于预设温度，且持续时长达到第四预设时长。First, the voltage of the single cell is in the normal voltage range, and the duration reaches the third preset duration, while the highest temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration.

第二，单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温度变化速率小于预设速率，且持续时长达到第四预设时长。Second, the voltage of the single cell is in the normal voltage range, and the duration reaches the third preset duration, while the temperature change rate around the single cell is less than the preset rate, and the duration reaches the fourth preset duration.

第三，单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温差小于预设温差，且持续时长达到第四预设时长。Third, the voltage of the single cell is in the normal voltage range, and the duration reaches the third preset duration, while the temperature difference around the single cell is less than the preset temperature difference, and the duration reaches the fourth preset duration.

第四，单体电芯周围的最高温度小于预设温度，且持续时长达到第第四预设时长，同时单体电芯的电压采样线路的故障数量为0。Fourth, the highest temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration, and the number of faults in the voltage sampling circuit of the single cell is 0.

第五，单体电芯处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯的电压采样线路的故障数量为0。Fifth, the single cell is in the normal voltage range, and the duration reaches the third preset duration, and the number of faults in the voltage sampling line of the single cell is 0.

第六，单体电芯周围的温差小于预设温差，且持续时长到达第四预设时长，同时单体电芯的电压采样线路的故障数量为0。Sixth, the temperature difference around the single cell is smaller than the preset temperature difference, and the duration reaches the fourth preset time period, and the number of faults in the voltage sampling circuit of the single cell is 0.

第七，温度传感器失效数量小于或等于1，且单体电芯的电压采样线路的故障数量为0。Seventh, the number of failures of the temperature sensor is less than or equal to 1, and the number of failures of the voltage sampling circuit of the single cell is 0.

同样，不仅可以根据单体电芯的电压和周围温度，判断单体电芯是否恢复正常，还可以根据单体电芯的电压和周围温度，确定单体电芯的电压线路出现故障的数量以及温度传感器的失效数量，根据数量和温度结合，或者数量与电压结合，判断单体电芯是否恢复正常。Similarly, it is not only possible to judge whether the single cell is back to normal according to the voltage and ambient temperature of the single cell, but also to determine the number of faults in the voltage circuit of the single cell and The number of failures of the temperature sensor, according to the combination of number and temperature, or the combination of number and voltage, to determine whether the single cell has returned to normal.

在控制器102确定目标单体电芯出现上述任意一种情况时，确定其恢复正常，生成休眠信息，则热失控控制模块103基于该休眠信息，控制降温机构104停止降温操作。When the controller 102 determines that the target single cell has any of the above conditions, determines that it returns to normal, and generates sleep information, the thermal runaway control module 103 controls the cooling mechanism 104 to stop the cooling operation based on the sleep information.

下面对该防止热失控的系统的工作过程进行举例描述。The working process of the system for preventing thermal runaway will be described below with an example.

针对一个电池包A，包括8个电池模组，各个电池模组包括4个电芯，根据电压平台由低到高原则将其编号为单体电芯1、单体电芯2、单体电芯3、单体电芯4属于电池模组1，单体电芯5、单体电芯6、单体电芯7、单体电芯8属于电池模组2。依次类推，该降温机构104的8个输气管的出气支路分别布置在8个电池模组附近，每个输气管的出气支路上均设置有一个电磁阀，电磁阀的编号对应电池模组的编号，在控制器102根据采集模块101采集到的信号确定目标单体电芯3出现热失控时，向热失控控制模块103发送控制信号，该控制信号中包括出现热失控的单体电芯坐标，即3号，则热失控控制模块103控制降温机构104中的高压气体发生装置201向涡轮管202输入高压气体，并开启对应的电磁阀1，以实现对目标单体电芯3所处对的电池模组1的降温。当控制器102接收到采集模块101反馈的目标单体电芯3已恢复正常的信号时，向热失控控制模块103发送休眠信号，以控制降温机构104中对应电池模组1的电磁阀1关闭，以停止降温操作。For a battery pack A, it includes 8 battery modules, and each battery module includes 4 cells, which are numbered as single cell 1, single cell 2, and single cell according to the principle of voltage platform from low to high. The cell 3 and the single cell 4 belong to the battery module 1 , and the single cell 5 , the single cell 6 , the single cell 7 , and the single cell 8 belong to the battery module 2 . By analogy, the air outlet branches of the 8 air pipes of the cooling mechanism 104 are respectively arranged near the 8 battery modules, and each air outlet branch of the air pipe is provided with a solenoid valve, and the number of the solenoid valve corresponds to that of the battery module. No., when the controller 102 determines that the target single cell 3 has thermal runaway according to the signal collected by the acquisition module 101, it sends a control signal to the thermal runaway control module 103, and the control signal includes the coordinates of the single cell that has thermal runaway. , namely No. 3, the thermal runaway control module 103 controls the high-pressure gas generating device 201 in the cooling mechanism 104 to input high-pressure gas into the turbine tube 202, and opens the corresponding solenoid valve 1, so as to realize the correct operation of the target single cell 3. cooling of the battery module 1. When the controller 102 receives the feedback signal from the acquisition module 101 that the target single cell 3 has returned to normal, it sends a sleep signal to the thermal runaway control module 103 to control the solenoid valve 1 of the cooling mechanism 104 corresponding to the battery module 1 to close. , to stop the cooling operation.

本发明实施例中的一个或多个技术方案，至少具有如下技术效果或优点：One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

本发明提供了一种防止热失控的系统，该系统连接电池包，该电池包包括多个电池模组，每个电池模组包括多个单体电芯，该系统包括：采集模块，包括，对应每个单体电芯的温度传感器以及电压采样线路，用于采集各个单体电芯的电压和周围温度；控制器，用于对各个单体电芯的电压和周围温度是否满足预设的热失控条件进行判断，获得判断结果，在判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令；热失控控制模块，用于基于该控制指令，控制降温机构对目标单体电芯执行降温操作；降温机构，连接电池包，进而通过对各个单体电芯的电压和周围温度进行监测，并在单体电芯即将发生热失控时，尽早开启降温措施，以主动防止热失控，确保电池包的安全性。The present invention provides a system for preventing thermal runaway, the system is connected to a battery pack, the battery pack includes a plurality of battery modules, each battery module includes a plurality of single cells, the system includes: a collection module, including, The temperature sensor and voltage sampling circuit corresponding to each single cell are used to collect the voltage and ambient temperature of each single cell; the controller is used to check whether the voltage and ambient temperature of each single cell meet the preset requirements The thermal runaway condition is judged, and a judgment result is obtained. When the judgment result indicates that a target single cell meets the preset thermal runaway condition, a control command is generated; the thermal runaway control module is used to control the cooling mechanism to the target based on the control command. The single cell performs the cooling operation; the cooling mechanism is connected to the battery pack, and then by monitoring the voltage and ambient temperature of each single cell, and when the single cell is about to be thermally out of control, the cooling measures are started as soon as possible to actively Prevent thermal runaway and ensure battery pack safety.

实施例二Embodiment 2

基于相同的发明构思，本发明还提供了一种防止热失控的方法，如图3所示，包括：Based on the same inventive concept, the present invention also provides a method for preventing thermal runaway, as shown in FIG. 3 , including:

S301，获取电池包内各个电池模组内的单体电芯的电压和周围温度；S301, obtaining the voltage and ambient temperature of the single cell in each battery module in the battery pack;

S302，对各个单体电芯的电压和周围温度是否满足设定的热失控条件进行判断，获得判断结果；S302, judging whether the voltage and ambient temperature of each single cell meet the set thermal runaway condition, and obtaining a judgment result;

S303，在所述判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令，以控制连接电池包的降温机构对目标单体电芯执行降温操作。S303 , when the judgment result indicates that the target single cell meets the preset thermal runaway condition, a control instruction is generated to control the cooling mechanism connected to the battery pack to perform a cooling operation on the target single cell.

在一种可选的实施方式中，所述预设的热失控条件包括：In an optional embodiment, the preset thermal runaway conditions include:

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的最高温度大于预设温度，且持续时长达到第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration; or

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温差大于预设温差，且持续时长到达第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration; or

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温度变化速率大于预设速率，且持续时长大于第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the temperature change rate around the single cell is greater than the preset rate, and the duration is greater than the second preset duration; or

单体电芯周围的最高温度大于所述预设温度，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

单体电芯的电压小于所述预设电压，且持续时长达到第一预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

单体电芯周围的温差大于所述预设温差，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

温度传感器失效的数量大于或等于2，且单体电芯的电压采样线路出现故障的数量大于或等于1。The number of temperature sensor failures is greater than or equal to 2, and the number of failures in the voltage sampling circuit of a single cell is greater than or equal to 1.

在一种可选的实施方式中，在生成控制指令，以控制连接电池包的降温机构对目标单体电芯执行降温操作之后，还包括：In an optional implementation manner, after generating a control instruction to control the cooling mechanism connected to the battery pack to perform a cooling operation on the target single cell, the method further includes:

判断目标单体电芯的电压和周围温度是否满足预设的停止降温条件，若是，生成休眠信号，控制所述降温机构停止降温操作。It is judged whether the voltage and ambient temperature of the target single cell meet the preset cooling stop condition, and if so, a sleep signal is generated to control the cooling mechanism to stop the cooling operation.

在一种可选的实施方式中，所述停止降温条件，包括：In an optional embodiment, the conditions for stopping the temperature drop include:

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的最高温度小于预设温度，且持续时长达到第四预设时长；或者The voltage of the single cell is within the normal voltage range, and the duration reaches the third preset duration, while the highest temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration; or

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温度变化速率小于预设速率，且持续时长达到第四预设时长；或者The voltage of the single cell is in the normal voltage range, and the duration reaches the third preset duration, and the temperature change rate around the single cell is less than the preset rate, and the duration reaches the fourth preset duration; or

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温差小于预设温差，且持续时长达到第四预设时长；或者The voltage of the single cell is within the normal voltage range, and the duration reaches the third preset duration, while the temperature difference around the single cell is less than the preset temperature difference, and the duration reaches the fourth preset duration; or

单体电芯周围的最高温度小于预设温度，且持续时长达到第第四预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The maximum temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration, and the number of faults in the voltage sampling circuit of the single cell is 0; or

单体电芯处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The single cell is in the normal voltage range, and the duration reaches the third preset duration, and the number of faults in the voltage sampling line of the single cell is 0; or

单体电芯周围的温差小于预设温差，且持续时长到达第四预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The temperature difference around the single cell is less than the preset temperature difference, and the duration reaches the fourth preset duration, and the number of faults in the voltage sampling circuit of the single cell is 0; or

温度传感器失效数量小于或等于1，且单体电芯的电压采样线路的故障数量为0。The number of failures of the temperature sensor is less than or equal to 1, and the number of failures of the voltage sampling line of the single cell is 0.

在一种可选的实施方式中，每个单体电芯具有唯一标识码，在确定单体电芯的电压和周围温度满足预设的热失控条件之后，还包括：确定目标单体电芯的坐标，所述坐标为目标单体电芯对应的唯一标识码；基于该目标单体电芯的坐标，生成控制指令。In an optional implementation manner, each single cell has a unique identification code, and after determining that the voltage and ambient temperature of the single cell meet the preset thermal runaway condition, the method further includes: determining the target single cell The coordinates are the unique identification code corresponding to the target single cell; based on the coordinates of the target single cell, a control instruction is generated.

在一种可选的实施方式中，所述控制连接电池包的降温机构对目标单体电芯执行降温操作，包括：In an optional implementation manner, the controlling the cooling mechanism connected to the battery pack to perform a cooling operation on the target single cell, including:

控制高压气体发生装置产生高压气体，经涡轮管将所述高压气体分离出冷气流，将所述冷气流通过输气管输送至相应的电池模组，在开启相应的电磁阀时，实现对目标单体电芯所处的电池模组的降温操作。Control the high-pressure gas generating device to generate high-pressure gas, separate the high-pressure gas into cold air flow through the turbine tube, and transport the cold air flow to the corresponding battery module through the gas transmission pipe. The cooling operation of the battery module where the body cell is located.

实施例三Embodiment 3

基于相同的发明构思，本发明实施例还提供了一种防止热失控的装置，如图4所示，包括：Based on the same inventive concept, an embodiment of the present invention also provides a device for preventing thermal runaway, as shown in FIG. 4 , including:

获取模块401，用于获取电池包内各个电池模组内的单体电芯的电压和周围温度；an acquisition module 401, used for acquiring the voltage and ambient temperature of a single cell in each battery module in the battery pack;

判断模块402，用于对各个单体电芯的电压和周围温度是否满足设定的热失控条件进行判断，获得判断结果；The judgment module 402 is used for judging whether the voltage and ambient temperature of each single cell meet the set thermal runaway condition, and obtaining the judgment result;

控制模块403，用于在所述判断结果表明有目标单体电芯满足预设的热失控条件时，生成控制指令，以控制连接电池包的降温机构对目标单体电芯执行降温操作。The control module 403 is configured to generate a control instruction to control the cooling mechanism connected to the battery pack to perform a cooling operation on the target single cell when the judgment result indicates that the target single cell meets the preset thermal runaway condition.

在一种可选的实施方式中，所述预设的热失控条件包括：In an optional embodiment, the preset thermal runaway conditions include:

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的最高温度大于预设温度，且持续时长达到第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration; or

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温差大于预设温差，且持续时长到达第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration; or

单体电芯的电压小于预设电压，且持续时长达到第一预设时长，同时单体电芯周围的温度变化速率大于预设速率，且持续时长大于第二预设时长；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the temperature change rate around the single cell is greater than the preset rate, and the duration is greater than the second preset duration; or

单体电芯周围的最高温度大于所述预设温度，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The highest temperature around the single cell is greater than the preset temperature, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

单体电芯的电压小于所述预设电压，且持续时长达到第一预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The voltage of the single cell is less than the preset voltage, and the duration reaches the first preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

单体电芯周围的温差大于所述预设温差，且持续时长达到第二预设时长，同时单体电芯的电压采样线路出现故障的数量大于或等于1；或者The temperature difference around the single cell is greater than the preset temperature difference, and the duration reaches the second preset duration, and the number of faults in the voltage sampling lines of the single cell is greater than or equal to 1; or

温度传感器失效的数量大于或等于2，且单体电芯的电压采样线路出现故障的数量大于或等于1。The number of failures of temperature sensors is greater than or equal to 2, and the number of failures of voltage sampling lines of single cells is greater than or equal to 1.

在一种可选的实施方式中，还包括：停止控制模块，用于在生成控制指令，以控制连接电池包的降温机构对目标单体电芯执行降温操作之后，判断目标单体电芯的电压和周围温度是否满足预设的停止降温条件，若是，生成休眠信号，控制所述降温机构停止降温操作。In an optional embodiment, it further includes: a stop control module, configured to determine the temperature of the target single cell after generating a control command to control the cooling mechanism connected to the battery pack to perform a cooling operation on the target single cell. Whether the voltage and the ambient temperature meet the preset cooling stop conditions, if so, a sleep signal is generated to control the cooling mechanism to stop the cooling operation.

在一种可选的实施方式中，所述停止降温条件，包括：In an optional embodiment, the conditions for stopping the temperature drop include:

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的最高温度小于预设温度，且持续时长达到第四预设时长；或者The voltage of the single cell is within the normal voltage range, and the duration reaches the third preset duration, while the highest temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration; or

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温度变化速率小于预设速率，且持续时长达到第四预设时长；或者The voltage of the single cell is in the normal voltage range, and the duration reaches the third preset duration, and the temperature change rate around the single cell is less than the preset rate, and the duration reaches the fourth preset duration; or

单体电芯的电压处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯周围的温差小于预设温差，且持续时长达到第四预设时长；或者The voltage of the single cell is within the normal voltage range, and the duration reaches the third preset duration, while the temperature difference around the single cell is less than the preset temperature difference, and the duration reaches the fourth preset duration; or

单体电芯周围的最高温度小于预设温度，且持续时长达到第第四预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The maximum temperature around the single cell is less than the preset temperature, and the duration reaches the fourth preset duration, and the number of faults in the voltage sampling circuit of the single cell is 0; or

单体电芯处于正常电压范围，且持续时长达到第三预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The single cell is in the normal voltage range, and the duration reaches the third preset duration, and the number of faults in the voltage sampling line of the single cell is 0; or

单体电芯周围的温差小于预设温差，且持续时长到达第四预设时长，同时单体电芯的电压采样线路的故障数量为0；或者The temperature difference around the single cell is less than the preset temperature difference, and the duration reaches the fourth preset duration, and the number of faults in the voltage sampling circuit of the single cell is 0; or

温度传感器失效数量小于或等于1，且单体电芯的电压采样线路的故障数量为0。The number of failures of the temperature sensor is less than or equal to 1, and the number of failures of the voltage sampling line of the single cell is 0.

在一种可选的实施方式中，每个单体电芯具有唯一标识码，还包括：确定模块，用于在确定单体电芯的电压和周围温度满足预设的热失控条件之后，确定目标单体电芯的坐标，所述坐标为目标单体电芯对应的唯一标识码；基于该目标单体电芯的坐标，生成控制指令。In an optional implementation manner, each single cell has a unique identification code, and further includes: a determination module configured to determine, after determining that the voltage and ambient temperature of the single cell meet the preset thermal runaway condition The coordinates of the target single cell, the coordinates are the unique identification code corresponding to the target single cell; based on the coordinates of the target single cell, a control instruction is generated.

在一种可选的实施方式中，所述控制模块，具体用于：In an optional implementation manner, the control module is specifically used for:

控制高压气体发生装置产生高压气体，经涡轮管将所述高压气体分离出冷气流，将所述冷气流通过输气管输送至相应的电池模组，开启相应的电磁阀，实现对目标单体电芯所处的电池模组的降温操作。Control the high-pressure gas generating device to generate high-pressure gas, separate the high-pressure gas into cold air flow through the turbine tube, transport the cold air flow to the corresponding battery module through the gas transmission pipe, open the corresponding solenoid valve, and realize the electricity to the target monomer. The cooling operation of the battery module where the core is located.

实施例四Embodiment 4

基于相同的发明构思，本发明实施例提供了一种新能源汽车，如图5所示，包括存储器504、处理器502及存储在存储器504上并可在处理器502上运行的计算机程序，所述处理器502执行所述程序时实现上述防止热失控的方法的步骤。Based on the same inventive concept, an embodiment of the present invention provides a new energy vehicle, as shown in FIG. 5 , comprising a memory 504, a processor 502, and a computer program stored in the memory 504 and running on the processor 502, so When the processor 502 executes the program, the steps of the above-mentioned method for preventing thermal runaway are implemented.

其中，在图5中，总线架构(用总线500来代表)，总线500可以包括任意数量的互联的总线和桥，总线500将包括由处理器502代表的一个或多个处理器和存储器504代表的存储器的各种电路链接在一起。总线500还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口506在总线500和接收器501和发送器503之间提供接口。接收器501和发送器503可以是同一个元件，即收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器502负责管理总线500和通常的处理，而存储器504可以被用于存储处理器502在执行操作时所使用的数据。5, the bus architecture (represented by bus 500), bus 500 may include any number of interconnected buses and bridges, bus 500 will include one or more processors represented by processor 502 and memory 504 The various circuits of the memory are linked together. The bus 500 may also link together various other circuits, such as peripherals, voltage regulators and power management circuits, etc., which are well known in the art and therefore will not be described further herein. Bus interface 506 provides an interface between bus 500 and receiver 501 and transmitter 503 . Receiver 501 and transmitter 503 may be one and the same element, a transceiver, providing a means for communicating with various other devices over a transmission medium. The processor 502 is responsible for managing the bus 500 and general processing, while the memory 504 may be used to store data used by the processor 502 in performing operations.

实施例五Embodiment 5

基于相同的发明构思，本发明实施例提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述防止热失控的方法的步骤。Based on the same inventive concept, an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps of the above method for preventing thermal runaway.

在此提供的算法和显示不与任何特定计算机、虚拟系统或者其它设备固有相关。各种通用系统也可以与基于在此的示教一起使用。根据上面的描述，构造这类系统所要求的结构是显而易见的。此外，本发明也不针对任何特定编程语言。应当明白，可以利用各种编程语言实现在此描述的本发明的内容，并且上面对特定语言所做的描述是为了披露本发明的最佳实施方式。The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used with teaching based on this. The structure required to construct such a system is apparent from the above description. Furthermore, the present invention is not directed to any particular programming language. It is to be understood that various programming languages may be used to implement the inventions described herein, and that the descriptions of specific languages above are intended to disclose the best mode for carrying out the invention.

在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本发明的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。In the description provided herein, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

类似地，应当理解，为了精简本公开并帮助理解各个发明方面中的一个或多个，在上面对本发明的示例性实施例的描述中，本发明的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而，并不应将该公开的方法解释成反映如下意图：即所要求保护的本发明要求比在每个权利要求中所明确记载的特征更多的特征。更确切地说，如下面的权利要求书所反映的那样，发明方面在于少于前面公开的单个实施例的所有特征。因此，遵循具体实施方式的权利要求书由此明确地并入该具体实施方式，其中每个权利要求本身都作为本发明的单独实施例。Similarly, it is to be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or its description. This disclosure, however, should not be construed as reflecting an intention that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

本领域那些技术人员可以理解，可以对实施例中的设备中的模块进行自适应性地改变并且把它们设置在与该实施例不同的一个或多个设备中。可以把实施例中的模块或单元或组件组合成一个模块或单元或组件，以及此外可以把它们分成多个子模块或子单元或子组件。除了这样的特征和/或过程或者单元中的至少一些是相互排斥之外，可以采用任何组合对本说明书(包括伴随的权利要求、摘要和附图)中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述，本说明书(包括伴随的权利要求、摘要和附图)中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。Those skilled in the art will appreciate that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. The modules or units or components in the embodiments may be combined into one module or unit or component, and further they may be divided into multiple sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method so disclosed may be employed in any combination unless at least some of such features and/or procedures or elements are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

此外，本领域的技术人员能够理解，尽管在此的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。例如，在下面的权利要求书中，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。Furthermore, it will be understood by those skilled in the art that although some of the embodiments herein include certain features, but not others, included in other embodiments, that combinations of features of the different embodiments are intended to be within the scope of the present invention And form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

本发明的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的软件模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本发明实施例的防止热失控的装置、新能源汽车中的一些或者全部部件的一些或者全部功能。本发明还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本发明的程序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。Various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) may be used in practice to implement the device for preventing thermal runaway, some or all of the components in a new energy vehicle according to the embodiments of the present invention, or Full functionality. The present invention can also be implemented as apparatus or apparatus programs (eg, computer programs and computer program products) for performing part or all of the methods described herein. Such a program implementing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such signals may be downloaded from Internet sites, or provided on carrier signals, or in any other form.

应该注意的是上述实施例对本发明进行说明而不是对本发明进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本发明可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。It should be noted that the above-described embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

Claims (10)

1. The utility model provides a system for prevent thermal runaway connects the battery package, the battery package includes a plurality of battery modules, and every battery module includes a plurality of monomer electricity cores, its characterized in that includes:
an acquisition module comprising: the battery module comprises a voltage sampling circuit corresponding to each single battery cell and a plurality of temperature sensors positioned in each battery module, and is used for acquiring the voltage and the ambient temperature of each single battery cell;
the controller is used for judging whether the voltage and the ambient temperature of each single battery cell meet preset thermal runaway conditions or not, obtaining a judgment result, and generating a control instruction when the judgment result shows that a target single battery cell meets the preset thermal runaway conditions;
the thermal runaway control module is used for controlling the cooling mechanism to perform cooling operation on the target single battery cell based on the control instruction;
and the cooling mechanism is connected with the battery pack.
2. The system of claim 1, wherein the preset thermal runaway condition comprises:
the voltage of the single battery cell is smaller than a preset voltage, the duration time reaches a first preset time, meanwhile, the highest temperature around the single battery cell is larger than a preset temperature, and the duration time reaches a second preset time; or
The voltage of the single battery cell is smaller than a preset voltage, the duration time reaches a first preset time, meanwhile, the temperature difference around the single battery cell is larger than a preset temperature difference, and the duration time reaches a second preset time; or
The voltage of the single battery cell is smaller than a preset voltage, the duration time reaches a first preset time, meanwhile, the temperature change rate around the single battery cell is larger than a preset rate, and the duration time is larger than a second preset time; or alternatively
The maximum temperature around the single battery cell is greater than the preset temperature, the duration time reaches a second preset time, and the number of faults occurring on the voltage sampling circuit of the single battery cell is greater than or equal to 1; or
The voltage of the single battery cell is smaller than the preset voltage, the duration time reaches a first preset time, and the number of faults occurring on the voltage sampling circuit of the single battery cell is greater than or equal to 1; or
The temperature difference around the single battery cell is larger than the preset temperature difference, the duration time reaches a second preset time, and the number of faults occurring on the voltage sampling circuit of the single battery cell is larger than or equal to 1; or
The number of failures of the temperature sensors is greater than or equal to 2, and the number of failures of the voltage sampling lines of the single battery cells is greater than or equal to 1.
3. The system of claim 1, wherein the controller is further to:
judging whether the voltage and the ambient temperature of the target single battery cell meet preset cooling stopping conditions or not, and if so, generating a sleep signal;
the thermal runaway control module is further used for controlling the cooling mechanism to stop cooling operation based on the dormancy signal.
4. The system of claim 3, wherein the stop cool down condition comprises:
the voltage of the single battery cell is in a normal voltage range, the duration time reaches a third preset time, meanwhile, the highest temperature around the single battery cell is smaller than the preset temperature, and the duration time reaches a fourth preset time; or
The voltage of the single battery cell is in a normal voltage range, the duration time reaches a third preset time, meanwhile, the temperature change rate around the single battery cell is smaller than a preset rate, and the duration time reaches a fourth preset time; or
The voltage of the single battery cell is in a normal voltage range, the duration time reaches a third preset time, meanwhile, the temperature difference around the single battery cell is smaller than the preset temperature difference, and the duration time reaches a fourth preset time; or
The maximum temperature around the single battery cell is smaller than the preset temperature, the duration time reaches a fourth preset time, and meanwhile the number of faults of the voltage sampling circuit of the single battery cell is 0; or alternatively
The single battery cell is in a normal voltage range, the duration time reaches a third preset time, and meanwhile the number of faults of a voltage sampling circuit of the single battery cell is 0; or alternatively
The temperature difference around the single battery cell is smaller than the preset temperature difference, the duration time reaches a fourth preset time, and meanwhile the number of faults of the voltage sampling circuit of the single battery cell is 0; or
The failure number of the temperature sensors is less than or equal to 1, and the failure number of the voltage sampling circuit of the single battery cell is 0.
5. The system of claim 1, wherein each individual cell has a unique identification code, the controller further to:
determining a coordinate of a target monomer battery cell after determining that the voltage and the ambient temperature of the target monomer battery cell meet a preset thermal runaway condition, wherein the coordinate is a unique identification code corresponding to the target monomer battery cell;
and generating a control instruction based on the coordinates of the target single battery cell.
6. The system of claim 5, wherein the cooling mechanism comprises:
a high-pressure gas generating device for generating high-pressure gas;
a turbine tube for separating the high pressure gas into a cold gas stream;
the air delivery pipe corresponds to each battery module and is used for delivering the cold air flow to the corresponding battery module;
the electromagnetic valve is arranged on the air outlet branch of the air delivery pipe, and the electromagnetic valve is opened to realize the cooling operation of the battery module where the target single battery cell is located.
7. A method of preventing thermal runaway, comprising:
acquiring the voltage and the ambient temperature of the single battery cell in each battery module in the battery pack;
judging whether the voltage and the ambient temperature of each single battery cell meet the set thermal runaway condition or not to obtain a judgment result;
and generating a control instruction to control a cooling mechanism connected with a battery pack to perform cooling operation on the target single battery cell when the judgment result shows that the target single battery cell meets a preset thermal runaway condition.
8. An apparatus for preventing thermal runaway, comprising:
the acquisition module is used for acquiring the voltage and the ambient temperature of the single battery cell in each battery module in the battery pack;
the judgment module is used for judging whether the voltage and the ambient temperature of each single battery cell meet the set thermal runaway condition or not to obtain a judgment result;
and the control module is used for generating a control instruction when the judgment result shows that the target single battery cell meets a preset thermal runaway condition so as to control the cooling mechanism connected with the battery pack to perform cooling operation on the target single battery cell.
9. A new energy vehicle comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method steps as claimed in claim 7 when executing the program.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method steps as claimed in claim 7.
CN202210705324.XA 2022-06-21 2022-06-21 Method, device and system for preventing thermal runaway Pending CN115064817A (en)

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