PACK-level fire fighting method and device and energy storage cabinet system

Abstract

The embodiment of the invention relates to a PACK level fire-fighting method and device and an energy storage cabinet system.The method comprises the steps that the battery cell pressure value and the battery cell temperature value of a single battery or a battery module are collected, whether the current state of the PACK module is abnormal or not is judged according to the battery cell pressure value and the battery cell temperature value, and when the PACK module is abnormal, the PACK level fire-fighting device is started. And performing PACK module grading early warning according to the cell pressure value and the cell temperature value. By monitoring the internal pressure of the battery cell in real time, early warning can be given out in advance when the thermal runaway symptom of the battery occurs, that is, thermal runaway can be detected more quickly by detecting the pressure of the single battery or the battery module, and then corresponding measures are taken to reduce the probability of fire occurrence. Meanwhile, dual monitoring of cell pressure detection and temperature detection is integrated, the detection result is more accurate and stable, and the protection effect of the PACK module and the energy storage cabinet is further improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of energy storage technology, and specifically to a PACK-level fire fighting method, device and energy storage cabinet system. Background Art

[0002] With the rapid development of the new energy industry, energy storage equipment is increasingly being used in the energy field. Among them, energy storage cabinets are a type of equipment specifically designed to store electrical energy, which integrates battery packs, battery management systems, power electronic converters, control systems, and other necessary auxiliary equipment. The main function of energy storage cabinets is to store electrical energy when there is excess power in the grid or when renewable energy is sufficient, and to release electrical energy when there is insufficient power in the grid or when demand is at a peak, in order to provide power support, balance grid loads, improve energy efficiency, and serve as a backup power source.

[0003] However, the safety issues of energy storage equipment are becoming increasingly prominent, among which fire protection is particularly important. In industrial and commercial energy storage cabinets, the fire protection system usually adopts two levels of protection - package level protection and cabinet level protection; package level protection is to install fire detectors on each PACK, and start fire protection through the alarm of fire detectors; cabinet level protection is to install fire detectors on the top of the energy storage cabinet, and start fire protection after the alarm is generated. The above method is not timely enough to detect thermal runaway in the early stage, and the increase in the number of fire detectors leads to increased costs. Summary of the invention

[0004] In view of the above problems, the present invention provides a PACK-level fire-fighting method, device and energy storage cabinet system to solve the problems in the prior art that thermal runaway is not discovered in a timely manner at the early stage and the increase in the number of fire detectors leads to increased costs.

[0005] According to one aspect of an example of the present invention, a PACK-level fire fighting method is provided, the method comprising: Obtaining a cell pressure value and a cell temperature value in a PACK module, wherein the cell pressure value and the cell temperature value are obtained by collecting data from a single cell or a battery module; According to the battery cell pressure value and the battery cell temperature value, determine whether the current state of the PACK module is abnormal; If yes, a PACK module classification warning is performed according to the battery cell pressure value and the battery cell temperature value; Otherwise no processing is performed.

[0006] In some optional embodiments, it is determined whether the current state of the PACK module is abnormal based on the battery cell pressure value and the battery cell temperature value. When the battery cell pressure value exceeds a preset pressure setting value and / or when the battery cell temperature value exceeds a preset temperature setting value, it is determined that the current state of the PACK module is abnormal; otherwise, the current state of the PACK module is normal.

[0007] In some optional embodiments, the pressure setting value includes at least a first pressure warning value, a second pressure warning value, a third pressure warning value and a fourth pressure warning value; the temperature setting value includes at least a first temperature warning value, a second temperature warning value, a third temperature warning value and a fourth temperature warning value.

[0008] In some optional embodiments, a PACK module classification warning is performed according to the battery cell pressure value and the battery cell temperature value, specifically including: When the battery cell pressure value is greater than or equal to the first pressure warning value, and the battery cell temperature value is within the first temperature warning value range, a level 1 alarm is executed; When the battery cell pressure value is greater than or equal to the second pressure warning value, and the battery cell temperature value is within the second temperature warning value range, and the duration is greater than or equal to the first preset time, a level 2 alarm is executed; When the battery cell pressure value is greater than or equal to the third pressure warning value, the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the second preset time, a level 3 alarm is executed; When any one of the following conditions is met: the battery cell pressure value is greater than or equal to the fourth pressure warning value, the battery cell temperature value is within the fourth temperature warning value range, or when the battery cell pressure value is greater than or equal to the third pressure warning value and the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the third preset time, a level 4 alarm is executed.

[0009] In some optional embodiments, the level 1 alarm is an internal warning, and the level 2 alarm, level 3 alarm, and level 4 alarm are to upload the alarm level of the PACK module to the elimination host for processing.

[0010] In some optional embodiments, the elimination host punctures the designated valve of the PACK module according to the level 2 alarm, level 3 alarm or level 4 alarm, releases the fire extinguishing agent to extinguish the PACK fire, and displays the alarm information through the EMS system.

[0011] In some optional embodiments, when the battery cell pressure value and the battery cell temperature value are acquired by collecting data from a single battery, When the battery cell pressure value exceeds the preset pressure setting value and / or when the battery cell temperature value exceeds the preset temperature setting value, the current single cell is deemed abnormal. If a first preset number of single cells in the PACK module are abnormal, the alarm level of the PACK module is uploaded to the elimination host for processing.

[0012] In some optional embodiments, when the battery cell pressure value and the battery cell temperature value are acquired by collecting data from a single battery, When the battery cell pressure value exceeds a preset pressure setting value and / or when the battery cell temperature value exceeds a preset temperature setting value, it is determined that the current single battery is abnormal; By detecting the cell pressure value and cell temperature value of at least one cell adjacent to the abnormal current cell, when the cell pressure value of the adjacent cell exceeds the preset pressure setting value and / or when the cell temperature value exceeds the preset temperature setting value, the PACK module is deemed abnormal, and the alarm level of the PACK module is uploaded to the elimination host for processing.

[0013] According to another aspect of an embodiment of the present invention, a PACK-level fire fighting device is provided, the device comprising: A data acquisition module, used to acquire a cell pressure value and a cell temperature value in a PACK module, wherein the cell pressure value and the cell temperature value are acquired by collecting data from a single cell or a battery module; An abnormality identification module, used to determine whether the current state of the PACK module is abnormal according to the battery cell pressure value and the battery cell temperature value; And an abnormality processing module is used to perform PACK module classification warning according to the battery cell pressure value and the battery cell temperature value.

[0014] According to another aspect of an embodiment of the present invention, there is provided an energy storage cabinet system, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform operations such as the above-mentioned PACK level fire protection method.

[0015] The present invention provides a PACK-level fire fighting method, device and energy storage cabinet system, and its beneficial effects are: the present invention collects the cell pressure value and cell temperature value of the single cell or battery module, and judges whether the current state of the PACK module is abnormal according to the cell pressure value and cell temperature value, and performs a graded warning of the PACK module according to the cell pressure value and cell temperature value when the PACK module is abnormal. The present invention not only monitors the internal pressure of the cell in real time, but also issues an early warning in advance when the battery shows signs of thermal runaway, that is, thermal runaway can be detected more quickly by detecting the pressure of the single cell or battery module, and then corresponding measures can be taken to reduce the probability of fire. At the same time, the present invention also integrates dual monitoring of cell pressure detection and temperature detection, and the detection results are more accurate and stable, further improving the protection effect of the PACK module and the energy storage cabinet.

[0016] The above description is only an overview of the technical solution of the example of the present invention. In order to more clearly understand the technical means of the embodiment of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the example of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings: Figure 1 The present invention provides a schematic flow chart of a PACK-level fire fighting method according to Example 1; Figure 2 The present invention provides a schematic diagram of the structure of a PACK-level fire-fighting device according to Embodiment 2; Figure 3 A schematic structural diagram of an energy storage cabinet system according to Embodiment 3 of the present invention is shown. DETAILED DESCRIPTION

[0018] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0019] Embodiment 1: Figure 1 The embodiment of a PACK-level fire protection method of the present invention is shown. The method is used in energy storage equipment, such as energy storage cabinets. The fire protection problem of energy storage equipment is solved from the PACK module of the energy storage cabinet, thereby improving the safety of the use of energy storage equipment. The method specifically includes: 110, obtaining the cell pressure value and cell temperature value in the PACK module, wherein the cell pressure value and cell temperature value are obtained by collecting data from a single cell or a battery module; in step 110, a monitoring module may be provided inside a single cell or inside a battery module, wherein the monitoring module includes a pressure sensor and a temperature sensor, and is used to monitor the cell pressure value and cell temperature value of a single cell or a battery module. The cell pressure value and cell temperature value are transmitted to the battery management system BMS of the PACK module for data processing.

[0020] 120, judging whether the current state of the PACK module is abnormal according to the cell pressure value and the cell temperature value; in step 120, judging whether the current state of the PACK module is abnormal according to the cell pressure value and the cell temperature value, when the cell pressure value exceeds the preset pressure setting value and / or when the cell temperature value exceeds the preset temperature setting value, the current state of the PACK module is considered abnormal, otherwise the current state of the PACK module is normal. The pressure setting value includes at least the first pressure warning value, the second pressure warning value, the third pressure warning value and the fourth pressure warning value; the temperature setting value includes at least the first temperature warning value, the second temperature warning value, the third temperature warning value and the fourth temperature warning value.

[0021] 130, if yes, then perform PACK module graded warning according to the battery cell pressure value and the battery cell temperature value; in step 130, different levels of warning can be given according to the magnitude of the voltage pressure value and the battery cell temperature value. In a specific example, a PACK module graded warning is performed according to the battery cell pressure value and the battery cell temperature value, specifically including: when the battery cell pressure value is greater than or equal to the first pressure warning value and the battery cell temperature value is within the first temperature warning value range, a level 1 alarm is executed; when the battery cell pressure value is greater than or equal to the second pressure warning value and the battery cell temperature value is within the second temperature warning value range, and the duration is greater than or equal to the first preset time, a level 2 alarm is executed; when the battery cell pressure value is greater than or equal to the third pressure warning value and the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the second preset time, a level 3 alarm is executed; when the battery cell pressure value is greater than or equal to the fourth pressure warning value and the battery cell temperature value is within the fourth temperature warning value range, or when the battery cell pressure value is greater than or equal to the third pressure warning value and the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the third preset time, a level 4 alarm is executed.

[0022] 140, otherwise no processing is performed. In step 140, when the battery cell pressure value and the battery cell temperature value are both normal, the PACK module works normally and no fire protection processing is performed.

[0023] The present invention collects the cell pressure value and cell temperature value of a single cell or battery module, determines whether the current state of the PACK module is abnormal according to the cell pressure value and cell temperature value, and performs a graded warning of the PACK module according to the cell pressure value and cell temperature value when the PACK module is abnormal. The present invention not only monitors the internal pressure of the cell in real time, but can also issue an early warning when the battery shows signs of thermal runaway. That is, thermal runaway can be detected more quickly by detecting the pressure of the single cell or battery module, and then corresponding measures can be taken to reduce the probability of fire. At the same time, the present invention also integrates dual monitoring of cell pressure detection and temperature detection, and the detection results are more accurate and stable, further improving the protection effect of the PACK module and the energy storage cabinet.

[0024] In a specific example of step 120, it is determined whether the current state of the PACK module is abnormal based on the cell pressure value and the cell temperature value. When the cell pressure value exceeds the preset pressure setting value and / or when the cell temperature value exceeds the preset temperature setting value, the current state of the PACK module is determined to be abnormal, otherwise the current state of the PACK module is normal. In this embodiment, the preset pressure setting value and the preset temperature setting value are stored in the MCU register of the battery management system of the PACK module. After obtaining the cell pressure value and the cell temperature value of the current single battery or battery module, the MCU of the battery management system determines whether the current state of the PACK module is normal by comparing the cell pressure value and the cell temperature value with the preset pressure setting value and the preset temperature setting value respectively.

[0025] In a specific example, the pressure setting value includes at least a first pressure warning value, a second pressure warning value, a third pressure warning value and a fourth pressure warning value; the temperature setting value includes at least a first temperature warning value, a second temperature warning value, a third temperature warning value and a fourth temperature warning value. In this embodiment, the pressure setting value can be set between 5 bar and 20 bar, that is, the first pressure warning value can be 5 bar, the second pressure warning value can be 10 bar, the third pressure warning value can be 15 bar, and the fourth pressure warning value can be 20 bar. The temperature setting value can be between 60°C and 90°C, that is, the first temperature warning value can be 60°C-70°C, the second temperature warning value can be 70°C-80°C, the third temperature warning value can be 80°C-90°C, and the fourth temperature warning value can be 80°C-90°C.

[0026] In a specific example of step 130, the PACK module classification warning is performed according to the battery cell pressure value and the battery cell temperature value, specifically including: When any one of the following conditions is met: the battery cell pressure value is greater than or equal to the first pressure warning value, and the battery cell temperature value is within the first temperature warning value range, a level 1 alarm is executed; in a specific example, only one of the following conditions needs to be met: the battery cell pressure value is greater than or equal to 5 bar, and the battery cell temperature value is between 60°C and 70°C, and then the level 1 alarm information of the battery management system BMS of the PACK module will sound an alarm inside the PACK module, inside the manufacturer, or inside the user.

[0027] When any one of the following conditions is met: the battery cell pressure value is greater than or equal to the second pressure warning value, and the battery cell temperature value is within the second temperature warning value range, and the duration is greater than or equal to the first preset time, a level 2 alarm is executed; in a specific example, only the battery cell pressure value needs to be greater than or equal to 10 bar, and the battery cell temperature value needs to be between 70°C and 80°C, and the duration is greater than or equal to 12 seconds, then the level 2 alarm information of the battery management system BMS of the PACK module is output to the fire host, and the fire host recognizes and processes it.

[0028] When any one of the following conditions is met: the battery cell pressure value is greater than or equal to the third pressure warning value, the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the second preset time, a level 3 alarm is executed; in a specific example, only the battery cell pressure value needs to be greater than or equal to 15 bar, and the battery cell temperature value needs to be between 80°C and 90°C, and the duration is greater than or equal to 6 seconds, then the level 3 alarm information of the battery management system BMS of the PACK module is output to the fire host, and identified and processed by the fire host.

[0029] When the cell pressure value is greater than or equal to the fourth pressure warning value, the cell temperature value is within the fourth temperature warning value range, or when the cell pressure value is greater than or equal to the third pressure warning value and the cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the third preset time, the 4th level alarm is executed. In a specific example, it only needs to meet the cell pressure value greater than or equal to 20bar, the cell temperature value greater than 90℃, and the cell pressure value greater than or equal to 15bar and the cell temperature value between 80℃-90℃, and the duration is greater than or equal to 5 seconds, then the 4th level alarm information of the battery management system BMS of the PACK module is output to the fire host, and the fire host recognizes and processes it.

[0030] In this embodiment, level 1 alarm is an internal warning, and level 2 alarm, level 3 alarm and level 4 alarm are to upload the alarm level of the PACK module to the elimination host for processing. The fire detector has a four-level warning function, and each level of warning corresponds to the latent period, warning period, alarm period and open flame period in the development process of thermal runaway fire.

[0031] According to the level 2 alarm, level 3 alarm or level 4 alarm, the elimination host executes the designated valve of the PACK module to release the fire extinguishing agent for PACK fire extinguishing, and displays the alarm information through the EMS system. Level 1 warning is the internal use level of the system, where the internal use level can be an internal alarm to the manufacturer or user; Level 2 and Level 3 are the warning levels when multiple sensors compositely judge abnormalities; Level 4 warning is the warning level when the pressure sensor and the temperature sensor detect that the "battery cell pressure value" and "battery cell temperature value" are abnormal and have a clear upward trend under the premise of level 2 and 3 warnings. In some examples, the alarm information output by the PACK module can be processed by the EMS system, and the EMS sends a designated puncture valve opening signal to the fire host, starts the designated puncture valve through the IO module, starts the fire extinguisher, and performs PACK-level protection, where the valve is the valve of the fire extinguisher.

[0032] In addition, under normal circumstances, the fire level output by the system requires a duration, but the "Level 3 Warning" does not need to consider the duration in the following situations, that is, when the system determines that the level is 4, but the duration of the system's Level 4 warning has not been reached, a Level 3 warning will be issued immediately. This can improve the response time of the alarm, quickly carry out firefighting, and thus improve fire safety.

[0033] In some optional embodiments, when the cell pressure value and the cell temperature value are acquired by collecting data from a single cell, when the cell pressure value exceeds a preset pressure setting value and / or when the cell temperature value exceeds a preset temperature setting value, the current single cell is deemed abnormal. If a first preset number of single cells in the PACK module are abnormal, the alarm level of the PACK module is uploaded to the elimination host for processing. In this embodiment, the first preset number may be at least three. When a single cell in the PACK module is abnormal, it may cause an abnormality in the adjacent single cells. For example, the abnormal single cell may transfer temperature heat, thereby causing the adjacent single cell to heat up and causing the temperature and pressure to rise rapidly. Simultaneously monitoring whether multiple single cells are abnormal can make the monitoring results more accurate and reliable. When the cell pressure value and the cell temperature value are acquired by collecting data from the battery module, the fire prevention judgment of the PACK module may also be performed with reference to the above method.

[0034] In some optional embodiments, when the cell pressure value and the cell temperature value are acquired by collecting the single cell, when the cell pressure value exceeds the preset pressure setting value and / or when the cell temperature value exceeds the preset temperature setting value, the current single cell is considered abnormal; by detecting the cell pressure value and the cell temperature value of at least one single cell adjacent to the abnormal current single cell, when the cell pressure value of the adjacent single cell exceeds the preset pressure setting value and / or when the cell temperature value exceeds the preset temperature setting value, the PACK module is considered abnormal, and the alarm level of the PACK module is uploaded to the elimination host for processing. In this embodiment, when the single cell of the PACK module is abnormal, it will cause the adjacent single cell to be abnormal, such as the abnormal single cell will perform temperature heat transfer, so that the adjacent single cell heats up and causes the temperature and pressure to rise rapidly. If the cell pressure value and the cell temperature value of the abnormal single cell cannot be sent normally, the abnormal position of the single cell can be confirmed by detecting the state of the adjacent cell. Specifically, when at least two adjacent single cells are detected to be abnormal, the single cell can be confirmed as an abnormal single cell by the single cell closest to all adjacent single cells. For example, when two adjacent single cells are abnormal, the single cell located between the two adjacent cells is confirmed to be an abnormal cell. For another example, when four adjacent single cells are abnormal, the single cell located between the four adjacent cells is confirmed to be an abnormal cell. Thus, the abnormal single cell is processed through the fire host. Here, the single cell can be processed separately, such as puncturing the explosion-proof valve of the single cell. It can also be processed for the PACK module, such as controlling the fire extinguisher through the fire host to extinguish the fire.

[0035] Embodiment 2: Figure 2 An embodiment of a PACK-level fire fighting device of the present invention is shown. The device is used to execute a PACK-level fire fighting method in Embodiment 1. The PACK-level fire fighting device 200 includes a data acquisition module 210 , an abnormality identification module 220 and an abnormality processing module 230 .

[0036] The data acquisition module 210 is used to execute step 110 in embodiment 1. The data acquisition module 210 specifically includes: a monitoring module can be set inside a single cell or inside a battery module. The monitoring module includes a pressure sensor and a temperature sensor, which are used to monitor the cell pressure value and cell temperature value of the single cell or battery module. The cell pressure value and cell temperature value are transmitted to the battery management system BMS of the PACK module for data processing.

[0037] The abnormality identification module 220 is used to execute step 120 in Example 1. The abnormality identification module 220 specifically includes: judging whether the current state of the PACK module is abnormal according to the battery cell pressure value and the battery cell temperature value. When the battery cell pressure value exceeds the preset pressure setting value and / or when the battery cell temperature value exceeds the preset temperature setting value, the current state of the PACK module is considered abnormal, otherwise the current state of the PACK module is normal. The pressure setting value includes at least the first pressure warning value, the second pressure warning value, the third pressure warning value and the fourth pressure warning value; the temperature setting value includes at least the first temperature warning value, the second temperature warning value, the third temperature warning value and the fourth temperature warning value.

[0038] The abnormality handling module 230 is used to execute step 130 in Example 1. The abnormality handling module 230 specifically includes: warnings of different degrees can be issued according to the magnitude of the voltage pressure value and the battery cell temperature value. In a specific example, a PACK module graded warning is performed according to the battery cell pressure value and the battery cell temperature value, specifically including: when the battery cell pressure value is greater than or equal to the first pressure warning value and the battery cell temperature value is within the first temperature warning value range, a level 1 alarm is executed; when the battery cell pressure value is greater than or equal to the second pressure warning value and the battery cell temperature value is within the second temperature warning value range, and the duration is greater than or equal to the first preset time, a level 2 alarm is executed; when the battery cell pressure value is greater than or equal to the third pressure warning value and the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the second preset time, a level 3 alarm is executed; when the battery cell pressure value is greater than or equal to the fourth pressure warning value and the battery cell temperature value is within the fourth temperature warning value range, or when the battery cell pressure value is greater than or equal to the third pressure warning value and the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the third preset time, a level 4 alarm is executed.

[0039] The present invention collects the cell pressure value and cell temperature value of a single cell or battery module, determines whether the current state of the PACK module is abnormal according to the cell pressure value and cell temperature value, and performs a graded warning of the PACK module according to the cell pressure value and cell temperature value when the PACK module is abnormal. The present invention not only monitors the internal pressure of the cell in real time, but can also issue an early warning when the battery shows signs of thermal runaway. That is, thermal runaway can be detected more quickly by detecting the pressure of the single cell or battery module, and then corresponding measures can be taken to reduce the probability of fire. At the same time, the present invention also integrates dual monitoring of cell pressure detection and temperature detection, and the detection results are more accurate and stable, further improving the protection effect of the PACK module and the energy storage cabinet.

[0040] Embodiment 3: Figure 3The schematic diagram of the structure of an embodiment of the energy storage cabinet system of the present invention is shown. The specific embodiment of the present invention does not limit the specific implementation of the energy storage cabinet system.

[0041] like Figure 3 As shown, the energy storage cabinet system may include: a processor, a communication interface, a memory, and a communication bus.

[0042] The processor 310, the communication interface 340, and the memory 320 communicate with each other via the communication bus 330. The communication interface is used to communicate with other devices such as a client or other server network elements. The processor is used to execute the program 350, which can specifically execute the relevant steps in the above-mentioned embodiment of the vehicle-mounted key storage method.

[0043] Specifically, the program may include program code including computer executable instructions.

[0044] The processor may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. The one or more processors included in the energy storage cabinet system may be processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0045] Memory is used to store programs. The memory may include high-speed RAM memory and may also include non-volatile memory, such as at least one disk storage.

[0046] The program can be called by the processor to enable the energy storage cabinet system to execute Figure 1 The following steps of embodiment 1 are as follows: 110, obtaining a cell pressure value and a cell temperature value in a PACK module, wherein the cell pressure value and the cell temperature value are obtained by collecting data from a single cell or a battery module; 120, judging whether the current state of the PACK module is abnormal according to the battery cell pressure value and the battery cell temperature value; 130, if yes, then PACK module classification warning is carried out according to the battery cell pressure value and battery cell temperature value; 140, otherwise no processing is performed.

[0047] The present invention collects the cell pressure value and cell temperature value of a single cell or battery module, determines whether the current state of the PACK module is abnormal according to the cell pressure value and the cell temperature value, and performs a graded warning of the PACK module according to the cell pressure value and the cell temperature value when the PACK module is abnormal. The present invention not only monitors the internal pressure of the cell in real time, but can also issue an early warning when the battery shows signs of thermal runaway. That is, by detecting the pressure of the single cell or battery module, thermal runaway can be detected more quickly, and then corresponding measures can be taken to reduce the probability of fire. At the same time, the present invention also integrates dual monitoring of cell pressure detection and temperature detection, and the detection results are more accurate and stable, further improving the protection effect of the PACK module and the energy storage cabinet.

[0048] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system or other device. In addition, the embodiments of the present invention are not directed to any particular programming language.

[0049] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. Similarly, in order to simplify the present invention and help understand one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. Wherein, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself is a separate embodiment of the present invention.

[0050] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and further may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive.

[0051] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A PACK-level firefighting method, characterized in that: The method comprises: Obtaining a cell pressure value and a cell temperature value in a PACK module, wherein the cell pressure value and the cell temperature value are obtained by collecting data from a single cell or a battery module; According to the battery cell pressure value and the battery cell temperature value, determine whether the current state of the PACK module is abnormal; If yes, a PACK module classification warning is performed according to the battery cell pressure value and the battery cell temperature value; Otherwise no processing is performed.

2. The PACK-level firefighting method according to claim 1, characterized in that: According to the battery cell pressure value and the battery cell temperature value, determine whether the current state of the PACK module is abnormal. When the battery cell pressure value exceeds a preset pressure setting value and / or when the battery cell temperature value exceeds a preset temperature setting value, it is determined that the current state of the PACK module is abnormal; otherwise, the current state of the PACK module is normal.

3. The PACK-level firefighting method according to claim 2, characterized in that: The pressure setting values ​​include at least a first pressure warning value, a second pressure warning value, a third pressure warning value and a fourth pressure warning value; the temperature setting values ​​include at least a first temperature warning value, a second temperature warning value, a third temperature warning value and a fourth temperature warning value.

4. The PACK-level firefighting method according to claim 3, characterized in that: According to the cell pressure value and cell temperature value, the PACK module is graded and warned, including: When the battery cell pressure value is greater than or equal to the first pressure warning value, and the battery cell temperature value is within the first temperature warning value range, a level 1 alarm is executed; When the battery cell pressure value is greater than or equal to the second pressure warning value, and the battery cell temperature value is within the second temperature warning value range, and the duration is greater than or equal to the first preset time, a level 2 alarm is executed; When the battery cell pressure value is greater than or equal to the third pressure warning value, the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the second preset time, a level 3 alarm is executed; When any one of the following conditions is met: the battery cell pressure value is greater than or equal to the fourth pressure warning value, the battery cell temperature value is within the fourth temperature warning value range, or when the battery cell pressure value is greater than or equal to the third pressure warning value and the battery cell temperature value is within the third temperature warning value range, and the duration is greater than or equal to the third preset time, a level 4 alarm is executed.

5. The PACK-level firefighting method according to claim 4, characterized in that: The level 1 alarm is an internal warning, and the level 2 alarm, level 3 alarm and level 4 alarm are to upload the alarm level of the PACK module to the elimination host for processing.

6. The PACK-level firefighting method according to claim 5, characterized in that: The elimination host executes the puncture of the designated valve of the PACK module according to the level 2 alarm, level 3 alarm or level 4 alarm, releases the fire extinguishing agent to extinguish the PACK fire, and displays the alarm information through the EMS system.

7. The PACK-level firefighting method according to claim 5, characterized in that: When the battery cell pressure value and the battery cell temperature value are obtained by collecting data from the single battery, When the battery cell pressure value exceeds the preset pressure setting value and / or when the battery cell temperature value exceeds the preset temperature setting value, the current single cell is deemed abnormal. If a first preset number of single cells in the PACK module are abnormal, the alarm level of the PACK module is uploaded to the elimination host for processing.

8. The PACK-level firefighting method according to claim 5, characterized in that: When the battery cell pressure value and the battery cell temperature value are obtained by collecting data from the single battery, When the battery cell pressure value exceeds a preset pressure setting value and / or when the battery cell temperature value exceeds a preset temperature setting value, it is determined that the current single battery is abnormal; By detecting the cell pressure value and cell temperature value of at least one cell adjacent to the abnormal current cell, when the cell pressure value of the adjacent cell exceeds the preset pressure setting value and / or when the cell temperature value exceeds the preset temperature setting value, the PACK module is deemed abnormal, and the alarm level of the PACK module is uploaded to the elimination host for processing.

9. A PACK-level fire-fighting device, characterized in that: The device comprises: A data acquisition module, used to acquire a cell pressure value and a cell temperature value in a PACK module, wherein the cell pressure value and the cell temperature value are acquired by collecting data from a single cell or a battery module; An abnormality identification module, used to determine whether the current state of the PACK module is abnormal according to the battery cell pressure value and the battery cell temperature value; And an abnormality processing module is used to perform PACK module classification warning according to the battery cell pressure value and the battery cell temperature value.

10. An energy storage cabinet system, characterized in that: include: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform the operation of the PACK-level fire fighting method as described in any one of claims 1-8.

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