Device and method for realizing linkage of battery thermal runaway test equipment and storage medium

Abstract

The invention discloses a device and method for realizing linkage of battery thermal runaway test equipment and a storage medium, and belongs to the technical field of battery safety testing, and the device is characterized in that a temperature acquisition instrument is connected with a battery, the temperature acquisition instrument acquires real-time temperature numerical information of the surface of the battery, and charging equipment is connected with the battery and charges the battery; the heating equipment is connected with the heating plate so as to heat the battery through the heating plate; a computer program is stored in a memory in the controller, and when the program is executed by a processor, the following steps can be realized: receiving the real-time temperature numerical value information sent by the temperature acquisition instrument, and converting the real-time temperature numerical value information into a corresponding temperature rise rate value; judging whether the temperature rise rate values for three continuous times are greater than or equal to a preset value or not; and if the continuous three times of temperature rise rate values are greater than or equal to the preset value, sending a closing instruction to the charging equipment and the heating equipment at the same time. The technical effects that the test result is not easily misjudged, and the cost can be reduced are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery safety testing, and in particular relates to a device, method and storage medium for realizing linkage of battery thermal runaway test equipment. Background Art

[0002] The causes of battery thermal runaway include internal short circuit, external short circuit, overcharge, over discharge and high temperature environment. Thermal runaway usually goes through stages such as SE I film decomposition, diaphragm melting, positive electrode decomposition and large-scale internal short circuit. The existing technology can trigger battery thermal runaway by heating and automatically stop heating, but it cannot cut off the current at the same time, which may lead to aggravated thermal runaway and even fire or explosion. At present, in battery safety testing technology, it is usually necessary for battery thermal runaway test equipment to manually judge and stop charging during the test, which will not only increase the complexity and uncertainty of the test, but also may lead to misjudgment of the test results due to human operation errors, and will also require repeated tests, increasing the production costs of battery companies.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the test results are easily misjudged and the cost is high.

[0005] In order to solve the above technical problems, the present invention provides a device for realizing the linkage of battery thermal runaway test equipment, the device comprising: a temperature collector, a charging device, a heating device and a controller, the temperature collector is connected to the battery, the temperature collector is used to collect real-time temperature numerical information of the battery surface; the charging device is connected to the battery, the charging device is used to charge the battery; the heating device is connected to the heating plate to heat the battery through the heating plate; the controller comprises a memory and a processor, wherein the memory stores a computer program, and the program can be realized when executed by the processor The following steps: S101, receiving the real-time temperature value information sent by the temperature collector, and converting the real-time temperature value information into a corresponding temperature rise rate value; S102, judging whether the temperature rise rate value for three consecutive times is greater than or equal to a preset value; S103, if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, simultaneously sending a shutdown instruction to the charging device and the heating device; S104, when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, then executing S101 to S104 in a loop.

[0006] Optionally, when the program is executed by the processor, the following steps can also be implemented: S101 a. Receive the real-time temperature numerical information sent by the temperature collector at a preset time interval, and convert the real-time temperature numerical information sent by the temperature collector into corresponding information to be compared, wherein the information to be compared includes a temperature rise rate value and a timestamp corresponding to the temperature rise rate value; S101 b. Sort the temperature rise rate values ​​in chronological order according to the timestamps corresponding to the temperature rise rate values.

[0007] Optionally, the preset time interval is 1s, and the preset value is 3°C / s.

[0008] Optionally, the real-time temperature numerical information received from the temperature collector is converted into corresponding information to be compared, wherein the information to be compared includes a temperature rise rate value and a timestamp corresponding to the temperature rise rate value, including: calculating the temperature rise rate value according to the received real-time temperature numerical information using β=ΔT / Δt, wherein ΔT is the temperature difference between two adjacent time points, Δt is the time interval between two adjacent time points, and β is the temperature rise rate value; and adding the corresponding timestamp to the temperature rise rate value in the chronological order of the calculated temperature rise rate values.

[0009] Optionally, when the program is executed by the processor, the following steps can also be implemented: S102a, comparing the three temperature rise rate values ​​corresponding to three adjacent timestamps with the preset value one by one to generate three comparison result information; S102b, if the three comparison result information are all greater than or equal to the preset value, it is determined that the battery cell is in thermal runaway, and a shutdown command is sent to the charging device and the heating device at the same time, and an alarm is issued.

[0010] Optionally, the temperature collector, the charging device and the heating device are connected to the controller via wired or wireless connections respectively.

[0011] Optionally, the charging device has a positive charging line and a negative charging line respectively connected to the battery, and the charging device charges the battery through the positive charging line and the negative charging line.

[0012] Optionally, the heating device has a normal-pressure live wire and a normal-pressure neutral wire respectively connected to a heating plate, and the heating plate is used to heat the battery.

[0013] According to another aspect of the present invention, the present invention also provides a method for realizing the linkage of battery thermal runaway test equipment, the method comprising: S100, placing the battery in a heating device for heating, and charging the battery through a charging device; S101, a controller receives real-time temperature numerical information sent by a temperature collector, and converts the real-time temperature numerical information into a corresponding temperature rise rate value; S102, a controller determines whether the temperature rise rate value for three consecutive times is greater than or equal to a preset value; S103, if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, the controller simultaneously sends a shutdown instruction to the charging device and the heating device; S104, when determining whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, the controller executes S101 to S104 in a loop.

[0014] According to another aspect of the present invention, the present invention also provides a computer-readable storage medium for realizing the linkage of battery thermal runaway test equipment, on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented: S101, receiving real-time temperature numerical information sent by a temperature collector, and converting the real-time temperature numerical information into a corresponding temperature rise rate value; S102, judging whether the temperature rise rate value for three consecutive times is greater than or equal to a preset value, and the preset value is 3°C / s; S103, if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, a shutdown instruction is sent to the charging device and the heating device at the same time; S104, when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, S101 to S104 are executed in a loop.

[0015] Beneficial effects:

[0016] The present invention provides a device for realizing the linkage of battery thermal runaway test equipment, which is connected to the battery through a temperature collector, the temperature collector is used to collect real-time temperature value information of the battery surface, the charging device is connected to the battery, the charging device is used to charge the battery; the heating device is connected to the heating plate to heat the battery through the heating plate; the memory in the controller stores a computer program, and the program can implement the following steps when executed by the processor: receiving the real-time temperature value information sent by the temperature collector, and converting the real-time temperature value information into a corresponding temperature rise rate value; judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value; if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, a shutdown instruction is sent to the charging device and the heating device at the same time; when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, the above steps are executed cyclically. In this way, the temperature collector collects the temperature data of the battery to be tested in real time, and transmits the data to the controller for processing through the connection with the controller, and when three temperature rise rate values ​​are continuously monitored to be greater than or equal to the preset value, it is judged that the battery has thermal runaway. At this time, the controller sends a shutdown command to the charging device and the heating device at the same time. After receiving the shutdown command, the charging device immediately stops charging the battery; the heating device stops heating the battery after receiving the shutdown command. It can automatically and synchronously cut off the charging current and stop heating, effectively avoiding the rapid chain reaction of battery thermal runaway and improving the safety and accuracy of the test. At the same time, it improves the level of automated testing, avoids misjudgment of test results and repeated tests, and is conducive to reducing costs. Thereby achieving the technical effect of not easily misjudging test results and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a device for realizing linkage with battery thermal runaway test equipment provided in an embodiment of the present invention.

[0019] Figure 2 A flowchart of a method for realizing linkage of battery thermal runaway test equipment provided in an embodiment of the present invention.

[0020] Figure 3 A structural diagram of a computer-readable storage medium for realizing linkage with battery thermal runaway test equipment provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention; the "and / or" keyword involved in this implementation represents both and, or. In other words, A and / or B mentioned in the embodiments of the present invention represent both A and B, and A or B, and describe the three states of A and B. For example, A and / or B means: only A is included but not B; only B is included but not A; both A and B are included.

[0022] It should be understood that although the terms "first", "second", etc. can be used here to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section. Spatially related terms such as "below", "above", etc. can be used here to facilitate the description of the relationship between one element or feature and another element or feature. It is understood that in addition to the orientation shown in the figure, spatially relative terms also include different orientations of the device in use or operation. For example, if the device in the figure is turned over, the element or feature described as "below" will be oriented as "above" other elements or features. Therefore, the exemplary term "below" can include both above and below orientations. The device can be oriented (rotated 90 degrees or in other orientations), and the spatially related descriptors used here are interpreted accordingly.

[0023] At the same time, in the embodiment of the present invention, it should be recognized that at least one controller 4 disclosed herein may include various microprocessors, integrated circuits, storage devices (e.g., flash memory, random access memory (RAM), read-only memory (ROM), electrically programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM) or other suitable variants thereof), and software that cooperates with each other to perform the operations disclosed herein. In addition, at least one controller 4 disclosed herein utilizes one or more microprocessors to execute a computer program contained in a non-temporary computer-readable medium, which is programmed to perform any number of functions disclosed. In addition, the controller 4 provided herein includes a housing and various numbers of microprocessors, integrated circuits, and storage devices (e.g., flash memory, random access memory (RAM), read-only memory (ROM), electrically programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM)) located within the housing. The disclosed controller 4 also includes hardware-based inputs and outputs for receiving data from and sending data to other hardware-based devices discussed herein, respectively.

[0024] A device for realizing linkage of thermal runaway test equipment of battery 5 provided in the first embodiment of the present invention is shown in FIG. Figure 1 As shown, Figure 1 : It is a structural schematic diagram of a device for realizing the linkage of thermal runaway test equipment of battery 5 provided in an embodiment of the present invention. A device for realizing the linkage of thermal runaway test equipment of battery 5 provided in embodiment 1 of the present invention comprises a temperature collector 1, a charging device 2, a heating device 3 and a controller 4. The temperature collector 1 is connected to the battery 5, and the temperature collector 1 is used to collect real-time temperature numerical information on the surface of the battery 5. The charging device 2 is connected to the battery 5, and the charging device 2 is used to charge the battery 5. The heating device 3 is connected to the heating plate 31 to heat the battery 5 through the heating plate 31. The controller 4 includes a memory and a processor, wherein the memory stores a computer program, and when the program is executed by the processor, the following steps can be implemented: Step S101, receiving the real-time temperature numerical information sent by the temperature collector 1, and converting the real-time temperature numerical information into a corresponding temperature rise rate value; Step S102, judging whether the temperature rise rate value for three consecutive times is greater than or equal to a preset value; Step S103, if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, simultaneously sending a shutdown instruction to the charging device 2 and the heating device 3; Step S104, when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, then looping through S101 to S104.

[0025] Among them, the battery 5 to be tested is placed on the heating plate 31 of the heating device 3 to ensure good contact between the battery 5 and the heating plate 31. At the same time, the charging device 2 is connected to the battery 5 to start charging the battery 5. The temperature collector 1 is provided with a temperature line, and the surface temperature of the battery 5 can be collected in real time through the temperature collector 1, that is, the real-time temperature numerical information of the surface of the battery 5 is obtained, and the real-time temperature numerical information includes the temperature value of the surface of the battery 5. The controller 4 may include a computer, and the battery 5 may be placed on the heating plate 31, and the battery 5 may be heated by the heating plate 31 connected to the heating device 3. In addition, the temperature collector 1, the charging device 2 and the heating device 3 may also be connected wirelessly or wiredly to facilitate the integration of the temperature collector 1, the charging device 2 and the heating device 3.

[0026] Among them, the temperature collector 1 can be closely attached to the surface of the battery 5 through its temperature line, collect the temperature value information of the surface of the battery 5 in real time, and send this information to the controller 4 in real time. After the controller 4 receives this information, it is processed by the preset program in the processor to calculate the corresponding temperature rise rate value. The processor in the controller 4 continuously monitors these temperature rise rate values. When the temperature rise rate values ​​detected three times in a row reach or exceed the preset value, it is considered that the battery 5 has thermal runaway. At this time, the processor immediately executes the preset shutdown instruction program and sends a shutdown signal to the charging device 2 and the heating device 3 at the same time. After receiving the shutdown signal, the charging device 2 immediately stops the charging operation of the battery 5 and cuts off the current connection between the positive charging line and the negative charging line and the battery 5. And after receiving the shutdown signal, the heating device 3 immediately stops the power supply to the heating plate 31, thereby stopping the heating of the battery 5. The heating device 3 and the charging device 2 are synchronized to cut off the charging current and stop heating, effectively avoiding the risk of accelerating the thermal runaway chain reaction of the battery 5 due to continued charging or heating during the thermal runaway process, and improving the safety and accuracy of the test.

[0027] In this embodiment, the temperature collector 1 is connected to the battery 5, and the temperature collector 1 is used to collect real-time temperature value information on the surface of the battery 5. The charging device 2 is connected to the battery 5, and the charging device 2 is used to charge the battery 5; the heating device 3 is connected to the heating plate 31 to heat the battery 5 through the heating plate 31; the memory in the controller 4 stores a computer program, and the program can implement the following steps when the processor executes it: receiving the real-time temperature value information sent by the temperature collector 1, and converting the real-time temperature value information into a corresponding temperature rise rate value; judging whether the temperature rise rate value for three consecutive times is greater than or equal to a preset value; if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, a shutdown instruction is sent to the charging device 2 and the heating device 3 at the same time; when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, the above steps are executed in a loop. In this way, the temperature collector 1 collects the temperature data of the battery 5 to be tested in real time, and transmits the data to the controller 4 for processing through the connection with the controller 4. When three temperature rise rate values ​​are continuously monitored to be greater than or equal to the preset value, it is judged that the battery 5 has thermal runaway. At this time, the controller 4 simultaneously sends a shutdown command to the charging device 2 and the heating device 3. After receiving the shutdown command, the charging device 2 immediately stops the charging operation of the battery 5; the heating device 3 stops the heating operation of the battery 5 after receiving the shutdown command. It can automatically and synchronously cut off the charging current and stop heating, effectively avoiding the rapid chain reaction of thermal runaway of the battery 5, and improving the safety and accuracy of the test. At the same time, it improves the level of automated testing, avoids misjudgment of test results and repeated tests, and is conducive to reducing costs. Thereby achieving the technical effect of not easily misjudging test results and reducing costs.

[0028] As an implementation mode, the program can also implement the following steps when executed by the processor: S101 a. Receive the real-time temperature value information sent by the temperature collector 1 at a preset time interval, and convert the real-time temperature value information sent by the temperature collector 1 into corresponding information to be compared, wherein the information to be compared includes a temperature rise rate value and a timestamp corresponding to the temperature rise rate value; S101 b. Sort the temperature rise rate values ​​in chronological order according to the timestamp corresponding to the temperature rise rate value. If the real-time temperature value information sent by the temperature collector 1 includes T1, T2, T3, T4, T5, T6, etc. in chronological order, T1, T2, T3, T4, T5, T6, etc. can be converted into corresponding information to be compared, such as converting T1 and T2 into a temperature rise rate value β1 and a timestamp t1, wherein t1 is a timestamp corresponding to β1, and β1 is marked in time by t1, so that the temperature rise rate values ​​can be sorted in chronological order, and the data processing flow can be simplified.

[0029] In some embodiments, the preset time interval is 1s, and the preset value is 3°C / s. That is, the temperature collector 1 sends the real-time temperature value information of the surface of the battery 5 to the controller 4 once per second, and the controller 4 determines whether the temperature rise rate is abnormal based on the preset value of 3°C / s. When an abnormal temperature rise rate is detected, the system can respond quickly to prevent misjudgment or safety accidents caused by untimely temperature monitoring.

[0030] In some embodiments, the real-time temperature numerical information received from the temperature collector 1 is converted into corresponding information to be compared, and the information to be compared includes a temperature rise rate value and a timestamp corresponding to the temperature rise rate value, including: according to the received real-time temperature numerical information, β=ΔT / Δt is used to calculate the temperature rise rate value, wherein ΔT is the temperature difference between two adjacent time points, Δt is the time interval between two adjacent time points, and β is the temperature rise rate value; according to the time sequence of the calculated temperature rise rate values, the corresponding timestamp is added to the temperature rise rate value. For example, T1, T2, T3, T4, T5, T6, etc., β1=|(T2-T1)| / 1s, β2=|(T3-T2)| / 1s, β3=|(T4-T3)| / 1s. The timestamp corresponding to β1 is t1, the timestamp corresponding to β2 is t2, and the timestamp corresponding to β3 is t3. t1, t2, and t3 are from small to large in time, so that the system can accurately identify the changing trend of the temperature rise rate according to the time sequence.

[0031] As an implementation mode, the program can also implement the following steps when executed by the processor: S102a, compare the three temperature rise rate values ​​corresponding to the three adjacent timestamps with the preset value one by one to generate three comparison result information; S102b, if the three comparison result information are all greater than or equal to the preset value, it is judged that the battery cell is in thermal runaway, and the shutdown instruction is sent to the charging device 2 and the heating device 3 at the same time, and an alarm is issued. For example, if the above β1, β2, and β3 are compared with 3℃ / s one by one, if β1≥3℃ / s, β2≥3℃ / s, and β3≥3℃ / s, it is judged that the battery cell is in thermal runaway. At this time, the controller 4 can send a shutdown instruction to the charging device 2 and the heating device 3 at the same time, and issue an alarm, such as an audible and visual alarm, to promptly remind the operator to pay attention and take corresponding measures.

[0032] In some embodiments, the temperature collector 1, the charging device 2 and the heating device 3 are respectively connected to the controller 4 by wire or wireless, so that the communication method can be flexibly configured, which can not only ensure the stability of data transmission, but also adapt to different laboratory environment layouts, making the entire system more flexible and easy to install and maintain, which not only simplifies the connection between devices, but also reduces the cost and complexity of wiring.

[0033] As an embodiment, the charging device 2 has a positive charging line and a negative charging line respectively connected to the battery 5, and the charging device 2 charges the battery 5 through the positive charging line and the negative charging line respectively. Through the positive charging line and the negative charging line, the charging device 2 can charge the battery 5, which can ensure the safety and efficiency of the charging process, and also facilitate the standardized production and maintenance of the equipment.

[0034] In some embodiments, the heating device 3 has a normal-pressure live wire and a normal-pressure neutral wire respectively connected to the heating plate 31, and the heating plate 31 is used to heat the battery 5. The heating device 3 provides power to the heating plate 31 through the normal-pressure live wire and the normal-pressure neutral wire to achieve the heating function of the battery 5. The heating plate 31 is in direct contact with the battery 5 or indirectly in contact with the battery 5 through a heat conduction medium to ensure that heat can be effectively transferred to the battery 5. During the test, the temperature collector 1 will continuously collect the temperature of the battery 5. When it is determined that the battery 5 has thermal runaway, the controller 4 will simultaneously send a shutdown command to the heating device 3 and the charging device 2. After receiving the shutdown command, the heating device 3 will immediately cut off the normal-pressure live wire and the normal-pressure neutral wire, and stop the charging operation of the battery 5, which is conducive to reducing the labor intensity of the test personnel and improving the test efficiency.

[0035] In order to explain in detail a method for realizing linkage of thermal runaway test equipment of battery 5 provided by the present invention, the above-mentioned embodiment one has made a detailed description of a device for realizing linkage of thermal runaway test equipment of battery 5. Based on the same inventive concept, the present application also provides a method for realizing linkage of thermal runaway test equipment of battery 5, see embodiment two for details.

[0036] See also Figure 2 , Figure 2 1 is a flow chart of a method for realizing linkage of thermal runaway test equipment of battery 5 provided by an embodiment of the present invention. A method for realizing linkage of thermal runaway test equipment of battery 5 provided by embodiment 2 of the present invention comprises the following steps:

[0037] S100, placing the battery 5 in the heating device 3 for heating, and charging the battery 5 through the charging device 2;

[0038] S101, the controller 4 receives the real-time temperature value information sent by the temperature collector 1, and converts the real-time temperature value information into a corresponding temperature rise rate value;

[0039] S102, determining whether the temperature rise rate values ​​for three consecutive times are greater than or equal to a preset value, the preset value being 3°C / s;

[0040] S103, if the temperature rise rate value is greater than or equal to the preset value for three consecutive times, sending a shutdown instruction to the charging device 2 and the heating device 3 at the same time;

[0041] S104, when judging whether the temperature rise rate values ​​for three consecutive times are greater than or equal to the preset value, if the temperature rise rate values ​​for three consecutive times are less than the preset value, S101 to S104 are executed cyclically.

[0042] The present invention provides a method for realizing the linkage of thermal runaway test equipment of battery 5. First, the battery 5 is placed in the heating device 3 for heating, and the battery 5 is charged by the charging device 2. Then, the controller 4 receives the real-time temperature value information sent by the temperature collector 1, and converts the real-time temperature value information into the corresponding temperature rise rate value. Then, it is judged whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, and the preset value is 3°C / s. If the temperature rise rate value for three consecutive times is greater than or equal to the preset value, a shutdown instruction is sent to the charging device 2 and the heating device 3 at the same time. Secondly, when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, the above steps are executed repeatedly. In this way, the temperature collector 1 collects the temperature data of the battery 5 to be tested in real time, and transmits the data to the controller 4 for processing through the connection with the controller 4. When three temperature rise rate values ​​are continuously monitored to be greater than or equal to the preset value, it is judged that the battery 5 has thermal runaway. At this time, the controller 4 sends a shutdown instruction to the charging device 2 and the heating device 3 at the same time. After receiving the shutdown command, the charging device 2 immediately stops charging the battery 5; the heating device 3 stops heating the battery 5 after receiving the shutdown command. The charging current can be automatically cut off and the heating can be stopped synchronously, effectively avoiding the sharp chain reaction of thermal runaway of the battery 5, and improving the safety and accuracy of the test. At the same time, the level of automated testing is improved, and misjudgment of test results and repeated tests are avoided, which is conducive to reducing costs. Thus, the technical effect of not easily misjudging test results and reducing costs is achieved.

[0043] In order to explain in detail the computer-readable storage medium 40 for realizing the linkage of the thermal runaway test equipment of the battery 5 provided by the present invention, the above-mentioned embodiment one has made a detailed description of a device for realizing the linkage of the thermal runaway test equipment of the battery 5. Based on the same inventive concept, the present application also provides a computer-readable storage medium 40 for realizing the linkage of the thermal runaway test equipment of the battery 5, see embodiment three for details.

[0044] See also Figure 3 , Figure 3 4 is a structural diagram of a computer-readable storage medium 40 for realizing linkage of thermal runaway test equipment of battery 5 provided in an embodiment of the present invention. Embodiment 3 of the present invention provides a computer-readable storage medium 40 for realizing linkage of thermal runaway test equipment of battery 5, on which a computer program 41 is stored, and when the program 41 is executed by a processor, the following steps are implemented:

[0045] S101, receiving real-time temperature numerical information sent by the temperature collector 1, and converting the real-time temperature numerical information into a corresponding temperature rise rate value;

[0046] S102, determining whether the temperature rise rate values ​​for three consecutive times are greater than or equal to a preset value;

[0047] S103, if the temperature rise rate value is greater than or equal to the preset value for three consecutive times, sending a shutdown instruction to the charging device 2 and the heating device 3 at the same time;

[0048] S104, when judging whether the temperature rise rate values ​​for three consecutive times are greater than or equal to the preset value, if the temperature rise rate values ​​for three consecutive times are less than the preset value, S101 to S104 are executed cyclically.

[0049] The present invention provides a computer-readable storage medium 40 for realizing the linkage of a battery 5 thermal runaway test device, by first receiving the real-time temperature numerical information sent by the temperature collector 1, and converting the real-time temperature numerical information into a corresponding temperature rise rate value; then judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value; if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, a shutdown instruction is sent to the charging device 2 and the heating device 3 at the same time; and when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, S101 to S104 are executed cyclically. In this way, the temperature collector 1 collects the temperature data of the battery 5 to be tested in real time, and transmits the data to the controller 4 for processing through the connection with the controller 4. When three temperature rise rate values ​​are continuously monitored to be greater than or equal to the preset value, it is judged that the battery 5 has thermal runaway. At this time, the controller 4 sends a shutdown instruction to the charging device 2 and the heating device 3 at the same time. After receiving the shutdown command, the charging device 2 immediately stops charging the battery 5; the heating device 3 stops heating the battery 5 after receiving the shutdown command. The charging current can be automatically cut off and the heating can be stopped synchronously, effectively avoiding the sharp chain reaction of thermal runaway of the battery 5, and improving the safety and accuracy of the test. At the same time, the level of automated testing is improved, and misjudgment of test results and repeated tests are avoided, which is conducive to reducing costs. Thus, the technical effect of not easily misjudging test results and reducing costs is achieved.

[0050] In some embodiments, the device provided by the embodiments of the present disclosure may also have functions or include modules that can be used to execute the method described in the above method embodiments. Its specific implementation can refer to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0051] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0052] In the several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device implementation described above is only schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation, such as units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0053] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0054] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of each implementation method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0055] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A device for realizing linkage with battery thermal runaway test equipment, characterized in that: The device comprises: a temperature collector, a charging device, a heating device and a controller, wherein the temperature collector is connected to a battery, and is used to collect real-time temperature value information of the battery surface; the charging device is connected to the battery, and is used to charge the battery; the heating device is connected to a heating plate to heat the battery through the heating plate; the controller comprises a memory and a processor, wherein the memory stores a computer program, and when the program is executed by the processor, the following steps can be implemented: S101, receiving the real-time temperature value information sent by the temperature collector, and converting the real-time temperature value information into a corresponding temperature rise rate value; S102, judging whether the temperature rise rate value for three consecutive times is greater than or equal to a preset value; S103, if the temperature rise rate value for three consecutive times is greater than or equal to the preset value, simultaneously sending a shutdown instruction to the charging device and the heating device; S104, when judging whether the temperature rise rate value for three consecutive times is greater than or equal to the preset value, if the temperature rise rate value for three consecutive times is less than the preset value, executing S101 to S104 in a loop.

2. The device for realizing linkage of battery thermal runaway test equipment according to claim 1, characterized in that: When the program is executed by the processor, the following steps can also be implemented: S101 a. receiving the real-time temperature value information sent by the temperature collector at a preset time interval, and converting the real-time temperature value information sent by the temperature collector into corresponding information to be compared, wherein the information to be compared includes a temperature rise rate value and a timestamp corresponding to the temperature rise rate value; S101 b. Sort the temperature rise rate values ​​in chronological order according to the timestamps corresponding to the temperature rise rate values.

3. The device for realizing linkage of battery thermal runaway test equipment according to claim 2, characterized in that: The preset time interval is 1s, and the preset value is 3°C / s.

4. The device for realizing linkage of battery thermal runaway test equipment according to claim 2, characterized in that: The real-time temperature numerical information received from the temperature collector is converted into corresponding information to be compared, wherein the information to be compared includes a temperature rise rate value and a timestamp corresponding to the temperature rise rate value. The timestamp includes: calculating the temperature rise rate value according to the received real-time temperature numerical information using β=ΔT / Δt, wherein ΔT is the temperature difference between two adjacent time points, Δt is the time interval between two adjacent time points, and β is the temperature rise rate value; and adding the corresponding timestamp to the temperature rise rate value in the time sequence of the calculated temperature rise rate values.

5. The device for realizing linkage of battery thermal runaway test equipment according to claim 2, characterized in that: When the program is executed by the processor, the following steps can also be implemented: S102a, comparing the three temperature rise rate values ​​corresponding to three adjacent timestamps with the preset value one by one to generate three comparison result information; S102b, if the three comparison result information are all greater than or equal to the preset value, it is determined that the battery cell is in thermal runaway, and a shutdown instruction is sent to the charging device and the heating device at the same time, and an alarm is issued.

6. The device for realizing linkage of battery thermal runaway test equipment according to claim 1, characterized in that: The temperature collector, the charging device and the heating device are connected to the controller via wired or wireless connections respectively.

7. The device for realizing linkage of battery thermal runaway test equipment according to claim 1, characterized in that: The charging device has a positive charging line and a negative charging line respectively connected to the battery, and the charging device charges the battery through the positive charging line and the negative charging line.

8. The device for realizing linkage of battery thermal runaway test equipment according to claim 1, characterized in that: The heating device comprises a normal-pressure live wire and a normal-pressure neutral wire respectively connected to a heating plate, and the heating plate is used to heat the battery.

9. A method for realizing linkage of battery thermal runaway test equipment, characterized in that: The method comprises: S100, placing the battery in a heating device for heating, and charging the battery through a charging device; S101, a controller receives real-time temperature numerical information sent by a temperature collector, and converts the real-time temperature numerical information into a corresponding temperature rise rate value; S102, the controller determines whether the temperature rise rate value for three consecutive times is greater than or equal to a preset value; S103, if the temperature rise rate value is greater than or equal to the preset value for three consecutive times, the controller simultaneously sends a shutdown instruction to the charging device and the heating device; S104. When judging whether the temperature rise rate values ​​for three consecutive times are greater than or equal to a preset value, if the temperature rise rate values ​​for three consecutive times are less than the preset value, the controller executes S101 to S104 in a loop.

10. A computer-readable storage medium for realizing linkage of battery thermal runaway test equipment, on which a computer program is stored, characterized in that: When the program is executed by the processor, the following steps are implemented: S101, receiving real-time temperature numerical information sent by a temperature collector, and converting the real-time temperature numerical information into a corresponding temperature rise rate value; S102, determining whether the temperature rise rate values ​​for three consecutive times are greater than or equal to a preset value, the preset value being 3°C / s; S103, if the temperature rise rate value is greater than or equal to the preset value for three consecutive times, sending a shutdown instruction to the charging device and the heating device at the same time; S104, when judging whether the temperature rise rate values ​​for three consecutive times are greater than or equal to the preset value, if the temperature rise rate values ​​for three consecutive times are less than the preset value, S101 to S104 are executed cyclically.

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