Battery combustion test model

Abstract

A battery combustion test model provided by the present invention comprises a test shell, a test element and a heating device, the test element comprises a plurality of battery cells and prostheses arranged in the test shell, and the heating device comprises a power supply, a plurality of heating plates and an electric control module for controlling the plurality of heating plates. The plurality of heating plates are fixed on the back plate in the test shell, so that heating positions can be changed, a thermal runaway starting point needs to be replaced, and when a multi-point combustion test needs to be carried out, only buttons corresponding to multi-point test positions need to be pressed on a control panel, and then a battery cell is placed at a corresponding position of the test shell; and meanwhile, repeated testing of the tested position can be prevented.

Description

Technical Field

[0001] The present application relates to the technical field of battery combustion testing, and in particular to a battery combustion testing model. Background Art

[0002] Lithium-ion battery PACK, also known as battery module, is a manufacturing process for lithium-ion batteries. It means packaging, encapsulation, and assembly. It refers to connecting multiple lithium-ion single cell groups in parallel and series, and considering system mechanical strength, thermal management, BMS matching and other issues. In the case of thermal runaway of lithium batteries, multiple complex chemical and physical reactions will occur inside the battery. The large amount of heat and gas released by thermal runaway will trigger a domino effect, causing other batteries to also experience thermal runaway, forming a thermal runaway fire spread in the energy storage system. The study of thermal runaway behavior and fire spread characteristics can not only verify whether the battery and design of the energy storage system are qualified as early as possible, reduce safety risks, but also master the characteristics of thermal runaway fire spread. The battery combustion test model is to test the characteristics of battery combustion. In the case of battery combustion, the traditional battery combustion test model can only perform battery evaluation at a single point, especially in the lithium-ion battery PACK group. Due to the arrangement of multiple lithium batteries, in reality, batteries that often experience thermal runaway often occur randomly. Therefore, detecting the thermal runaway of lithium-ion batteries in different positions has become an urgent problem to be solved. Summary of the invention

[0003] The embodiment of the present invention provides a battery combustion test model to at least solve the problem in the related art that it is difficult to detect thermal runaway of lithium-ion batteries at different positions.

[0004] According to one embodiment of the present invention, a battery combustion test model is provided, comprising a test shell, a test element and a heating device, wherein the test element comprises a plurality of battery cells and a dummy arranged in the test shell, the heating device comprises a power supply, a plurality of heating plates and an electric control module for controlling the plurality of heating plates, the plurality of heating plates are fixed on a back plate in the test shell, and each of the heating plates is fixed on the test shell at a position where each of the battery cells or dummy corresponds to the position of the test shell.

[0005] Furthermore, the electric control module comprises:

[0006] A control board for controlling the operation of one or several heating plates and a control circuit for transmitting control signals from the control board to the heating plates to enable the heating plates to operate.

[0007] Furthermore, the control panel includes a first switch button for controlling the operation of a certain heating plate;

[0008] A second switch button for controlling power supply to the heating plate;

[0009] The first switch buttons are the same in number and position as the heating plates.

[0010] Further, when the first switch button is pressed, the first switch button that is pressed performs a first color changing operation.

[0011] Further, when the first switch button is pressed and the second switch button is pressed, the pressed first switch performs a second color change operation.

[0012] Furthermore, the control panel includes a switch remote control and buttons arranged on the switch remote control, a plurality of the buttons are arranged on the switch remote control, a plurality of switches arranged in parallel are arranged under the buttons, a main switch connecting the power supply and the switch control panel circuit is arranged on the second switch button, and each switch is connected to the corresponding heating plate.

[0013] Furthermore, the control panel includes a control display terminal for remotely operating the heating plate and outputting control instructions, and the control circuit includes a first wireless module for sending control instructions issued by the control panel, a second wireless module for receiving control instructions issued by the first wireless module, and a processing module for processing control instructions and controlling the designated heating plate to perform heating actions.

[0014] Furthermore, simulation buttons arranged in the same manner as the heating plates are provided on the control and display terminal.

[0015] Through the present invention, a heater is placed at the corresponding position of each battery module, which can ensure the change of the heating position. If the starting point of thermal runaway needs to be changed, it is only necessary to place the battery cell at the designated position, and the dummy is placed at the other positions. When a multi-point combustion test is required, it is only necessary to press the button corresponding to the multi-point test position on the control panel, and then place the battery cell at the corresponding position of the test shell. At the same time, before the test, the first switch button can be pressed to change color, which can instruct personnel to install the battery cell at the correct position, and then the second button can be activated to complete the heating of the heating plate, thereby ensuring higher accuracy. At the same time, a secondary color change is performed after heating, which can prevent the position that has been tested from being repeated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0018] Figure 2 This is a diagram showing the location of the electric heating plate in Example 1 of the present application;

[0019] Figure 3 This is a schematic diagram of a side panel of Embodiment 1 of the present application;

[0020] Figure 4 This is a schematic diagram of another side panel of Embodiment 1 of the present application;

[0021] Figure 5 This is a schematic diagram of a thermocouple wire according to Example 1 of the present application;

[0022] Figure 6 This is a schematic diagram of a switch remote control embodying Embodiment 1 of the present application;

[0023] Figure 7 2 is a schematic diagram of the structure in one embodiment;

[0024] Figure 8 This is a circuit diagram of Example 2.

[0025] In the figure, 1. test shell; 11. side panel; 12. back panel; 13. fire extinguishing nozzle port; 14. thermocouple wire inlet; 15. thermocouple wire; 16. gas analyzer collection port; 17. aviation plug heating plate wire; 18. exhaust valve; 2. test element; 3. heating plate; 41. switch remote control; 42. first switch button; 43. second switch button; 5. control display terminal; 6. first wireless module; 7. second wireless module; 8. processing module. DETAILED DESCRIPTION

[0026] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] Example 1: A battery combustion test model, referring to Figure 1-Figure 5As shown, the test housing 1 includes a test element 2 and a heating device. The test housing 1 includes four side panels 11 and a back panel 12. A fire extinguishing nozzle port 13 is provided at a position of one side panel 11 located inside the housing. A thermocouple wire inlet 14 is also provided. The thermocouple wire 15 is used to measure the temperature change at each position when the battery cell is in thermal runaway to form a change curve. In this embodiment, the thermocouple wire 15 is set as an S-shaped loop set thermocouple wire 15, which can ensure multi-point measurement of temperature change and ensure more accurate data. An exhaust valve 18 for exhausting gas is also provided. The board is provided with a gas analyzer collection port 16 for gas analysis during thermal runaway, and an aviation plug heating plate line 17. A battery cell and a prosthesis are provided in the shell. The prosthesis is a battery cell prosthesis, wherein the battery cell is used for ignition, and the prosthesis is used to simulate the combustion process of the battery cell. A plurality of heating plates 3 are provided on the back plate 12 in the shell. In the present embodiment, the number of heating plates 3 is the same as the number of battery cells and prostheses, and the arrangement is such that each heating plate 3 corresponds to a battery cell or prosthesis, and ensures that each battery cell or prosthesis is provided with a corresponding heating plate 3. The above-mentioned heating plate 3 is used to heat the battery cell to simulate the situation of thermal runaway of the battery cell.

[0028] Reference Figure 6 As shown, the electric control module includes a control board and a control circuit. The control board is used to control one or several heating plates 3 to work, and the control circuit is used to transmit the control signal of the control board to the heating plate 3 and make the heating plate 3 work. The control board is set as a switch remote controller 41 in this embodiment. Two buttons are set on the controller. The first button is set as a square button, which is used to control a heating plate 3 to perform heating action. In this embodiment, it is named as a first switch button 42. The second button is set as a round button. In this embodiment, it is named as a second switch button 43. The arrangement of the first switch button 42 is the same as that of the heating plate 3, and each first switch button 42 corresponds to the heating plate 3 at the corresponding position. The first switch buttons 42 are respectively provided with multiple switches arranged in parallel. The first switch button 42 is a master control switch connected to the power supply. After the first switch button 42 is pressed, the action of pressing the second switch button 43 is completed, and the heating plate 3 corresponding to the first switch button 42 works.

[0029] A color indicator light is also provided below the above-mentioned first switch button 42. In the present embodiment, they are respectively set as green and red indicator lights. When the first switch button 42 is pressed, the pressed first switch button 42 performs a first color change operation, that is, the green indicator light turns on. When the first switch button 42 is pressed and the second switch button 43 is pressed, the pressed first switch performs a second color change operation, that is, the green indicator light goes out and the red indicator light turns on. The above-mentioned red indicator light turns on. The above-mentioned green indicator light turns on, which can ensure that when the first switch button 42 is pressed, the operator is reminded of the placement position of the battery cell to prevent the battery cell and the prosthesis from being misplaced, resulting in test failure. The process in which the green indicator light goes out and the red indicator light turns on can, when multiple tests are performed, the red indicator light reminds the operator that the thermal runaway of the battery cell corresponding to the position has been tested to prevent multiple repeated tests from occurring.

[0030] Placing a heater at the corresponding position of each battery module can ensure the change of the heating position. If the starting point of thermal runaway needs to be changed, it is only necessary to place the battery cell at the designated position, and place the dummy at the remaining positions. When a multi-point combustion test is required, it is only necessary to press the button corresponding to the multi-point test position on the control panel, and then place the battery cell at the corresponding position of the test shell 1. At the same time, before the test, the first switch button 42 can be pressed to change color, which can instruct personnel to install the battery cell in the correct position, and then the second button can be activated to complete the heating of the heating plate 3, ensuring higher accuracy. At the same time, a secondary color change after heating can prevent repeated testing at the position where the test has been carried out.

[0031] Embodiment 2: The difference from Embodiment 1 is that, referring to Figure 7-8 As shown, the control panel includes a control display terminal 5 for remotely operating the heating plate 3 and outputting control instructions. In this embodiment, the control display terminal 5 is set as a flat panel display, and can also be set as a control terminal such as a mobile phone or a computer, wherein the first switch button 42 and the second switch button 43 are virtual buttons simulated on the terminal, and the virtual buttons also have the functions of the first color change operation and the second color change operation. When the virtual first switch button 42 is pressed, the virtual first switch button 42 on the terminal turns green, and when the virtual second switch button 43 is pressed, the virtual first switch button 42 on the terminal turns red. The control circuit includes a first wireless module 6 for sending control instructions issued by the control panel, a second wireless module 7 for receiving control instructions issued by the first wireless module 6, and a processing module 8 for processing control instructions and controlling the designated heating plate 3 to perform heating actions. The above-mentioned terminal records the data of the first switch button 42, and when the second switch button 43 is pressed, it is sent to the second wireless module 7 through the first wireless module 6. The second wireless module 7 receives the instruction and processes it through the processing module 8 to control the corresponding heating plate 3 to heat up.

[0032] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is only to describe the distinction mode adopted by the objects of the same attributes when describing in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0033] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms of "a", "" and "the" used in the embodiments of the present application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that in the description of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the present application is only a description of the association relationship of associated objects, indicating that three relationships can exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0034] As used herein, the words “if” or “if” may be interpreted as “at the time of” or “when” or “in response to determining” or “in response to detecting”, depending on the context. Similarly, the phrases “if it is determined” or “if (stated condition or event) is detected” may be interpreted as “when it is determined” or “in response to determining” or “when detecting (stated condition or event)” or “in response to detecting (stated condition or event)”, depending on the context.

[0035] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery combustion test model, characterized in that: include: A test housing (1), a test element (2) and a heating device, wherein the test element (2) comprises a plurality of battery cells and a dummy arranged in the test housing (1), and the heating device comprises a power supply, a plurality of heating plates (3) and an electric control module for controlling the plurality of heating plates (3), wherein the plurality of heating plates (3) are fixed on a back plate (12) in the test housing (1), and the position at which each heating plate (3) is fixed to the test housing (1) is located at a position of each battery cell or dummy corresponding to the test housing (1).

2. A battery combustion test model according to claim 1, characterized in that: The electronic control module comprises: A control board for controlling the operation of one or several heating plates (3) and a control circuit for transmitting a control signal of the control board to the heating plate (3) and causing the heating plate (3) to operate.

3. A battery combustion test model according to claim 2, characterized in that: include: The control panel comprises a first switch button (42) for controlling the operation of a certain heating plate (3); A second switch button (43) for controlling the power supply to the heating plate (3); The first switch buttons (42) are identical in number and position to the heating plate (3).

4. A battery combustion test model according to claim 3, characterized in that: include: When the first switch button (42) is pressed, the pressed first switch button (42) performs a first color changing operation.

5. A battery combustion test model according to claim 4, characterized in that: include: When the first switch button (42) is pressed and the second switch button (43) is pressed, the pressed first switch performs a second color changing operation.

6. A battery combustion test model according to claim 3, characterized in that: include: The control panel comprises a switch remote controller (41) and buttons arranged on the switch remote controller (41), a plurality of the buttons are arranged on the switch remote controller (41), a plurality of switches arranged in parallel are arranged below the buttons, a main switch connecting the power supply and the switch control panel circuit is arranged on the second switch button (43), and each switch is connected to the corresponding heating plate (3).

7. A battery combustion test model according to claim 3, characterized in that: include: The control panel comprises a control display terminal (5) for remotely operating the heating plate (3) and outputting control instructions; The control circuit comprises a first wireless module (6) for sending control instructions issued by a control panel, a second wireless module (7) for receiving control instructions issued by the first wireless module (6), and a processing module (8) for processing the control instructions and controlling a designated heating plate (3) to perform a heating action.

8. A battery combustion test model according to claim 7, characterized in that: include: The control display terminal (5) is provided with simulation keys arranged in the same manner as the heating plate (3).

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