Gas impact experiment device

Abstract

The utility model belongs to the technical field of battery testing, and discloses a gas impact experiment device which is used for testing a battery cell. The device comprises a box body, a pressurizing mechanism, a heating assembly and a placing plate. Wherein the box body is provided with a gas chamber in a surrounding manner, the output end of the pressurizing mechanism is communicated with the gas chamber, and the pressurizing mechanism can compress gas to a required pressure value so as to meet the pressure requirement required by testing. The heating assembly is arranged in the gas chamber and can heat the gas to a required temperature value so as to meet the temperature requirement required by testing. The placing plate is arranged on the outer side of the box body, a to-be-tested battery cell is placed on the placing plate, and a through hole communicated with the gas chamber is formed in the placing plate so that gas in the gas chamber can impact the to-be-tested battery cell. The device can be used for simulating gas impact experiments under various pressure and various temperature conditions and carrying out various types of failure mode tests on a battery cell so as to accurately simulate battery behaviors in the actual application process.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a gas impact experiment device. Background Art

[0002] The safety of new energy vehicle batteries is of utmost importance. Under abnormal conditions such as overcharging, over-discharging, or physical damage, the battery may cause thermal runaway, which in turn leads to an increase in electrolyte pressure and the release of explosive gases, affecting the safety of the entire battery system. Therefore, it is necessary to conduct experimental tests on battery cells by simulating high-temperature and high-pressure gas impacts to evaluate their protection effects under extreme conditions.

[0003] Currently, the experimental methods for simulating gas impact tests between battery cells are usually single types of failure modes, only single thermal runaway or single physical impact, rather than comprehensively testing the battery behavior under multiple conditions. Therefore, the battery behavior during actual application cannot be accurately simulated. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gas impact experiment device that can conduct multi-type failure mode tests on battery cells to accurately simulate the battery behavior during actual application.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Provide a gas impact experiment device for testing battery cells, including:

[0007] A box body enclosing a gas chamber;

[0008] A pressurizing mechanism that can compress gas to the required pressure value, and the output end of the pressurizing mechanism is connected to the gas chamber;

[0009] A heating component arranged in the gas chamber, which can heat the gas to the required temperature value;

[0010] A placement plate arranged outside the box body, configured to place the battery cell, and through holes communicating with the gas chamber are provided on the placement plate.

[0011] As an optional scheme of the gas impact experiment device, it further includes a buffer component, and the buffer component includes a buffer tank and a pressure control component;

[0012] The buffer tank is connected between the output end of the pressurizing mechanism and the gas chamber, and the pressure control component is arranged on the side wall of the buffer tank. The pressure control component can monitor the gas pressure value in the buffer tank and adjust the pressure value of the gas.

[0013] As an alternative to the gas impact test device, the pressure control assembly includes a pressure sensor and a pressure controller. The pressure sensor can monitor the gas pressure value in the buffer tank, and the pressure sensor is communicatively connected to the pressure controller, which can adjust the gas pressure value in the buffer tank.

[0014] As an alternative to the gas impact test device, the accuracy of the pressure sensor is 0.01 kPa.

[0015] As an alternative to the gas impact test device, the heating assembly includes a heating mechanism and a temperature sensor. The temperature sensor and the heating mechanism are both disposed in the gas chamber. The temperature sensor can monitor the gas temperature in the gas chamber and is communicatively connected to the heating mechanism, which can heat the gas.

[0016] As an alternative to the gas impact test device, the temperature adjustment range of the heating mechanism is 25°C - 800°C.

[0017] As an alternative to the gas impact test device, the box body includes an outer shell and an inner liner. The inner liner is disposed inside the outer shell, and a plurality of support members are provided between the inner liner and the outer shell. The inner liner surrounds the gas chamber.

[0018] As an alternative to the gas impact test device, the outer shell is welded from a steel structure, and the inner liner is made of a heat-insulating material.

[0019] As an alternative to the gas impact test device, the inner liner is made of mica board or heat-insulating board.

[0020] Advantages of the present utility model:

[0021] The present utility model provides a gas impact test device for testing battery cells. The device includes a box body, a pressurizing mechanism, a heating assembly, and a placement plate. Among them, the box body surrounds a gas chamber. The output end of the pressurizing mechanism is communicated with the gas chamber, and the pressurizing mechanism can compress the gas to a required pressure value to meet the pressure requirement for testing. The heating assembly is disposed in the gas chamber and can heat the gas to a required temperature value to meet the temperature requirement for testing. The placement plate is disposed outside the box body, and the cell to be tested is placed on the placement plate. Through holes communicating with the gas chamber are provided on the placement plate so that the gas in the gas chamber can impact the cell to be tested. The device can simulate gas impact tests under various pressure and temperature conditions, and perform various types of failure mode tests on battery cells to accurately simulate the battery behavior in the actual application process. Description of the Drawings

[0022] Figure 1It is the front view of the gas impact experiment device provided by the specific embodiment of the present utility model.

[0023] In the figure:

[0024] 100, battery cell;

[0025] 1, box body; 10, gas chamber;

[0026] 2, pressurizing mechanism;

[0027] 3, heating component;

[0028] 4, placement plate;

[0029] 5, buffer component; 51, buffer tank; 52, pressure control component; 521, pressure sensor. Specific embodiment

[0030] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0031] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0033] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] The technical solution of the present utility model will be further described below in conjunction with the drawings and through specific embodiments.

[0035] As Figure 1 shown, this embodiment provides a gas impact experiment device for testing the battery cell 100. The device includes a box body 1, a pressurizing mechanism 2, a heating component 3 and a placement plate 4. Among them, the box body 1 is surrounded by a gas chamber 10. The output end of the pressurizing mechanism 2 is communicated with the gas chamber 10, and the pressurizing mechanism 2 can compress the gas to the required pressure value to meet the pressure requirements for testing. The heating component 3 is arranged in the gas chamber 10 and can heat the gas to the required temperature value to meet the temperature requirements for testing. The placement plate 4 is arranged outside the box body 1. The cell 100 to be tested is placed on the placement plate 4. The placement plate 4 is provided with through holes communicated with the gas chamber 10 so that the gas in the gas chamber 10 can impact the cell 100 to be tested. This device can simulate gas impact experiments under various pressures and various temperature conditions, and conduct various types of failure mode tests on the battery cell 100 to accurately simulate the battery behavior in the actual application process.

[0036] Exemplarily, the pressurizing mechanism 2 is a commonly used air compressor in the field, with a large and continuous gas output, stable operation, light weight and small floor area.

[0037] Optionally, the box body 1 includes an outer shell and an inner liner. The inner liner is arranged inside the outer shell, and the inner liner is surrounded by the gas chamber 10. A plurality of support members are arranged between the inner liner and the outer shell. Specifically, the support members are support plates or support rods, as long as they can support the inner liner inside the outer shell.

[0038] Furthermore, the outer shell is welded by steel structures to ensure the overall connection strength of the box body 1; the inner liner material is made of heat-insulating materials to insulate the gas in the gas chamber 10 and reduce heat loss.

[0039] Even further, the inner liner is made of mica plates or heat-insulating plates and has good heat-insulating performance.

[0040] Optionally, continue to refer to Figure 1, the gas impact test device further includes a buffer assembly 5, and the buffer assembly 5 includes a buffer tank 51 and a pressure control assembly 52. Among them, the buffer tank 51 is connected between the output end of the pressurizing mechanism 2 and the gas chamber 10, and the gas flow direction is as shown by the arrow in Figure 1 . The pressure control assembly 52 is arranged on the side wall of the buffer tank 51, can monitor the gas pressure value in the buffer tank 51, and can adjust the gas pressure value to accurately control the gas pressure value injected into the gas chamber 10, reduce the experimental error, and ensure the accuracy and reliability of the experimental results.

[0041] Furthermore, the pressure control assembly 52 includes a pressure sensor 521 and a pressure controller (not shown in the figure). The pressure sensor 521 is fixed on the side wall of the buffer tank 51 for monitoring the gas pressure value in the buffer tank 51. The pressure sensor 521 is communicatively connected to the pressure controller, and the pressure controller can adjust the gas pressure value in the buffer tank 51. Specifically, the pressure controller is a device that can adjust pressure and has been publicly disclosed in the prior art. Its specific structure and principle refer to the prior art and will not be elaborated here.

[0042] Even further, the accuracy of the pressure sensor 521 is 0.1 kPa, and the pressure adjustment range of the pressure controller is 0 - 1.2 MPa.

[0043] Optionally, the heating assembly 3 includes a heating mechanism and a temperature sensor. Both the temperature sensor and the heating mechanism are arranged in the gas chamber 10. The temperature sensor can monitor the gas temperature in the gas chamber 10 and is communicatively connected to the heating mechanism, and the heating mechanism can heat the gas in the gas chamber 10 to meet the temperature requirements of the experiment.

[0044] Furthermore, the temperature adjustment range of the heating mechanism is 25°C - 800°C. Specifically, the heating mechanism is a commonly used heater in this field.

[0045] Exemplarily, the temperature sensor is a device that can monitor temperature and has been publicly disclosed in the prior art. Its specific structure and principle refer to the prior art and will not be elaborated here.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A gas impact test device for testing a battery cell (100), characterized in that: include: A box body (1) is provided with a gas chamber (10); A pressurizing mechanism (2), wherein the pressurizing mechanism (2) is capable of compressing the gas to a desired pressure value, and an output end of the pressurizing mechanism (2) is connected to the gas chamber (10); A heating component (3) is disposed in the gas chamber (10) and is capable of heating the gas to a desired temperature value; A placement plate (4) is arranged outside the box body (1) and is configured to place the battery cell (100). A through hole communicating with the gas chamber (10) is provided on the placement plate (4).

2. The gas impact test device according to claim 1, characterized in that: It also includes a buffer assembly (5), wherein the buffer assembly (5) includes a buffer tank (51) and a pressure control assembly (52); The buffer tank (51) is connected between the output end of the pressurizing mechanism (2) and the gas chamber (10), and the pressure control component (52) is arranged on the side wall of the buffer tank (51). The pressure control component (52) can monitor the gas pressure value in the buffer tank (51) and adjust the pressure value of the gas.

3. The gas impact test device according to claim 2, characterized in that: The pressure control component (52) comprises a pressure sensor (521) and a pressure controller. The pressure sensor (521) is capable of monitoring the gas pressure value in the buffer tank (51). The pressure sensor (521) is communicatively connected to the pressure controller. The pressure controller is capable of adjusting the gas pressure value in the buffer tank (51).

4. The gas impact test device according to claim 3, characterized in that: The accuracy of the pressure sensor (521) is 0.01 kPa.

5. The gas impact test device according to claim 1, characterized in that: The heating component (3) comprises a heating mechanism and a temperature sensor. The temperature sensor and the heating mechanism are both arranged in the gas chamber (10). The temperature sensor can monitor the gas temperature in the gas chamber (10) and is communicatively connected to the heating mechanism. The heating mechanism can heat the gas.

6. The gas impact test device according to claim 5, characterized in that: The temperature adjustment range of the heating mechanism is 25°C-800°C.

7. The gas impact test device according to claim 1, characterized in that: The box body (1) comprises an outer shell and an inner shell, wherein the inner shell is arranged in the outer shell, and a plurality of supporting members are arranged between the inner shell and the outer shell, and the inner shell surrounds the gas chamber (10).

8. The gas impact test device according to claim 7, characterized in that: The outer shell is welded from a steel structure, and the inner shell is made of a heat-insulating material.

9. The gas impact test device according to claim 8, characterized in that: The inner container is made of mica board or heat insulation board.

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