Battery pack test tool

Abstract

The utility model provides a battery pack test tool, and relates to the technical field of batteries. Comprising a box body and a detection piece, and a battery pack can be placed in a containing cavity of the box body for testing, so that the box body can achieve the purpose of protecting the battery pack. When the battery pack needs to be tested in a sealed environment, the ventilation opening can be closed, so that the battery pack is sealed in the accommodating cavity of the box body. When the battery pack needs to be tested in a ventilation environment, the ventilation opening can be opened, so that the accommodating cavity can be communicated with the outside of the box body. The fire-fighting cavity of the box body can be used for accommodating a fire extinguishing agent, and when the temperature and / or air pressure in the accommodating cavity rises due to thermal runaway of the battery pack, the fire-fighting cavity is communicated with the accommodating cavity, so that the fire extinguishing agent in the fire-fighting cavity can be input into the accommodating cavity, the temperature of the battery pack can be reduced, and open fire is avoided; therefore, the battery pack test process is safer through the battery pack test tool.

Description

Technical Field

[0001] The present application relates to a test tooling for a battery pack, belonging to the technical field of batteries. Background Art

[0002] With the development of battery technology, the integration of battery packs is getting higher and higher, making the capacitance of battery packs more and more sufficient. Correspondingly, the safety requirements for battery packs are also getting higher and higher. Therefore, during the preparation and production process of battery packs, it is necessary to test the battery packs. Correspondingly, corresponding test tooling is required to conduct battery pack tests.

[0003] Currently, the tooling used for battery pack tests only has the function of fixing the battery pack, resulting in a single function of the test tooling and no protection function when unexpected situations occur to the battery pack. Utility Model Content

[0004] The present application provides a test tooling for a battery pack, which solves the problem of the single function of the battery pack test tooling in the related art.

[0005] The present application provides a test tooling for a battery pack, including:

[0006] A box body, in which there is a fire protection cavity for accommodating a fire extinguishing agent and a cavity for accommodating a battery pack. The fire protection cavity is configured to be communicable or disconnectable with the cavity. A ventilation port and a wiring port communicating with the cavity are opened on the surface of the box body, and the ventilation port is configured to be openable and closable;

[0007] A detection member, arranged on the box body, and the detection member is configured to detect whether the battery pack is in thermal runaway;

[0008] Wherein, when the battery pack is in thermal runaway, the fire protection cavity is communicated with the cavity.

[0009] In some embodiments, the box body includes a bottom plate, a middle shell and an upper cover. Both sides of the middle shell have openings. The bottom plate and the upper cover seal the openings on both sides of the middle shell. The bottom plate, the middle shell and the upper cover enclose to form the cavity. The fire protection cavity is arranged in the bottom plate, the middle shell and / or the upper cover, and the ventilation port and the wiring port are opened on the bottom plate, the middle shell and / or the upper cover.

[0010] In some embodiments, the number of the ventilation ports is multiple, and the multiple ventilation ports are opened on the side wall of the middle shell and are spaced circumferentially along the middle shell.

[0011] In some embodiments, a first sealing member is further included, and the first sealing member is detachably arranged on the ventilation port.

[0012] In some embodiments, the first seal includes a sealing strip and a sealing pile. The sealing strip is attached to the outer wall of the middle shell and covers the ventilation opening. The sealing pile is disposed on the sealing strip and blocks the ventilation opening.

[0013] In some embodiments, the fire chamber is disposed within the upper cover. The upper cover is provided with a fire opening configured to be openable and closable to connect or disconnect the fire chamber from the accommodating chamber.

[0014] In some embodiments, the fire chamber includes a plurality of fire sub-channels spaced apart along the length and / or width direction of the upper cover. Adjacent fire sub-channels are connected to each other. The number of fire openings is plural, and each fire sub-channel is connected to at least one of the fire openings.

[0015] In some embodiments, a second seal is further included, which is detachably disposed within the fire opening.

[0016] In some embodiments, a pressurizing member is further included. The pressurizing member is disposed on the upper cover and is electrically connected to the detecting member. The pressurizing member is configured to inject gas into the fire chamber to increase the pressure within the fire chamber until the second seal is extruded out of the fire opening.

[0017] In some embodiments, the detecting member includes a temperature sensor and a pressure sensor both electrically connected to the pressurizing member. The temperature sensor and the pressure sensor are disposed within the box body to detect the temperature and pressure within the accommodating chamber.

[0018] In the battery pack test tooling provided by the present application, the battery pack can be placed in the accommodating chamber of the box body for testing, such that the box body can serve the purpose of protecting the battery pack. When the battery pack needs to be tested in a sealed environment, the ventilation opening can be closed, such that the battery pack is sealed within the accommodating chamber of the box body. When the battery pack needs to be tested in a ventilated environment, the ventilation opening can be opened, such that the accommodating chamber can communicate with the outside of the box body. The fire chamber of the box body can be used to accommodate fire extinguishing agent. When the battery pack undergoes thermal runaway, resulting in an increase in the temperature and / or air pressure within the accommodating chamber, the fire chamber communicates with the accommodating chamber such that the fire extinguishing agent within the fire chamber can be input into the accommodating chamber, such that the temperature of the battery pack can be reduced and the occurrence of open flames can be avoided, making the process of testing the battery pack using the battery pack test tooling of the present application safer. In addition, the air pressure within the accommodating chamber can also be reduced by opening the ventilation opening, further enhancing the safety of the process of testing the battery pack using the battery pack test tooling of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features, and advantages of the embodiments of the present application will become more readily apparent from the following detailed description with reference to the accompanying drawings. In the drawings, multiple embodiments of the present application will be illustrated by way of example and not limitation, where:

[0020] Figure 1 is a schematic diagram of a battery pack test tooling according to an embodiment of the present application;

[0021] Figure 2 is an exploded schematic diagram of a battery pack test tooling according to an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of an upper cover of a battery pack test tooling according to an embodiment of the present application;

[0023] Figure 4 is a schematic diagram of a middle part of a battery pack test tooling that can be combined with the upper cover according to an embodiment of the present application.

[0024] Reference numerals:

[0025] 100 - box body, 110 - bottom plate, 111 - cavity, 120 - middle shell, 121 - ventilation opening, 130 - upper cover, 131 - fire protection cavity, 131a - fire protection sub-channel, 132 - fire protection opening, 140 - tray, 150 - sealing ring,

[0026] 200 - detection part,

[0027] 300 - first seal, 310 - sealing strip, 320 - sealing pile,

[0028] 400 - second seal,

[0029] 500 - pressurizing part,

[0030] 600 - battery pack. Detailed implementation manners

[0031] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, 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, and thus should not be construed as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0034] In the present application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0037] With the development of battery technology, the integration of battery packs is getting higher and higher, making the capacitance of battery packs more and more sufficient. Correspondingly, the safety requirements for battery packs are also getting higher and higher. Therefore, it is necessary to test the battery pack during the preparation and production process of the battery pack. Correspondingly, corresponding test tooling is required to conduct the battery pack test.

[0038] Currently, the tooling used for battery pack testing only has the function of fixing the battery pack, resulting in a single function of the test tooling and no protection function when an accident occurs to the battery pack.

[0039] In the battery pack test tooling proposed in this application, the battery pack can be placed in the cavity of the box body for testing, so that the box body can serve the purpose of protecting the battery pack. When the battery pack needs to be tested in a sealed environment, the ventilation opening can be closed, so that the battery pack is sealed in the cavity of the box body. When the battery pack needs to be tested in a ventilated environment, the ventilation opening can be opened, so that the cavity can communicate with the outside of the box body. The fire protection cavity of the box body can be used to accommodate fire extinguishing agents. When the battery pack undergoes thermal runaway, resulting in an increase in the temperature and / or air pressure in the cavity, the fire protection cavity communicates with the cavity so that the fire extinguishing agent in the fire protection cavity can be input into the cavity, so that the temperature of the battery pack can be reduced and open flames can be avoided, making the process of testing the battery pack through the battery pack test tooling of this application safer. In addition, the air pressure in the cavity can also be reduced by opening the ventilation opening, so that the process of testing the battery pack through the battery pack test tooling of this application is further safer.

[0040] The following will describe in detail the battery pack test tooling provided in this application in combination with specific embodiments.

[0041] An embodiment of this application proposes a battery pack test tooling, referring to Figures 1 to 4 as shown, including a box body 100. This battery pack test tooling can be used to fix and protect the battery pack to be tested.

[0042] Among them, the box body 100 is the basic component of the battery pack test tooling of the present application. The box body 100 can provide an installation foundation for at least some other components of the battery pack test tooling and serve the purpose of protecting at least some other components. The box body 100 can be prepared from a metal material, so that the box body 100 has better structural strength, thereby making the durability and reliability of the box body 100 better. Specifically, the box body 100 can be prepared from a high-temperature-resistant metal material.

[0043] A cavity 111 and a fire protection cavity 131 are arranged in the box body 100. The cavity 111 and the fire protection cavity 131 are cavity structures inside the box body 100. Among them, the cavity 111 of the box body 100 can be used to place and install the battery pack 600 to be tested, and the battery pack 600 can be tested inside the box body 100. A wiring port is also opened on the surface of the box body 100. The wiring port communicates the cavity 111 with the outside of the box body 100. One end of a wire can pass through the wiring port and be electrically connected to the battery pack 600, and the other end of the wire can be electrically connected to a charge and discharge device outside the box body 100, so that the battery pack 600 can perform a charge and discharge test. The box body 100 can serve the purpose of protecting the battery pack 600, making the battery pack 600 safer during the test process. The fire protection cavity 131 and the cavity 111 are independent cavities inside the box body 100, and a fire extinguishing agent can be accommodated in the fire protection cavity 131. The fire protection cavity 131 is configured to be able to communicate with or disconnect from the cavity 111. When the fire protection cavity 131 communicates with the cavity 111, the fire extinguishing agent in the fire protection cavity 131 can be input into the cavity 111.

[0044] The detection component 200 is arranged on the box body 100, and the detection component 200 is configured to detect whether the battery pack 600 in the cavity 111 is in a thermal runaway state. When the battery pack 600 has a thermal runaway phenomenon during the test, resulting in an increase in the temperature of the battery pack 600 or the appearance of an open flame, the fire protection cavity 131 inside the box body 100 can communicate with the cavity 111, so that the fire extinguishing agent in the fire protection cavity 131 can be input into the cavity 111. In this way, the fire extinguishing agent can come into contact with the battery pack 600 with thermal runaway, so that the temperature of the battery pack 600 can be reduced, and the open flame on the battery pack 600 can be eliminated, making the test of the battery pack 600 through the battery pack 600 test work of the present application safer and more controllable. In addition, when the battery pack 600 has a thermal runaway phenomenon during the test, the battery pack 600 may also release a large amount of gas. If the battery pack 600 is tested in a sealed environment, the air pressure in the cavity 111 of the box body 100 will increase. Therefore, when the air pressure in the cavity 111 of the box body 100 increases, the fire protection cavity 131 can also or will be communicated with the cavity 111, so that the fire extinguishing agent in the fire protection cavity 131 can be injected into the inner cavity, so that the temperature of the battery pack 600 can be reduced.

[0045] Vent holes 121 can also be formed on the surface of the box body 100. The vent holes 121 communicate with the cavity 111 of the box body 100, so that the cavity 111 can also communicate with the outside of the box body 100 through the vent holes 121. When the battery pack 600 needs to be tested in a sealed environment, the vent holes 121 can be closed to prevent the cavity 111 of the box body 100 from communicating with the outside of the box body 100. When the battery pack 600 needs to be tested in a ventilated environment, the vent holes 121 can be opened to allow the cavity 111 of the box body 100 to communicate with the outside of the box body 100. Therefore, the battery pack test tooling of the present application is suitable for testing the battery pack 600 under various test requirements and has good applicability.

[0046] It should be understood that when the battery pack 600 experiences thermal runaway, the battery pack 600 may also release a large amount of gas. If the battery pack 600 is tested in a sealed environment, the air pressure inside the cavity 111 of the box body 100 will increase. At this time, the vent holes 121 can also be opened to allow the gas inside the cavity 111 to be released outside the box body 100, so as to reduce the air pressure inside the cavity 111 and avoid accidents caused by excessive air pressure inside the cavity 111. In addition, opening the vent holes can also allow the heat inside the cavity 111 to dissipate to the outside of the box body 100 through the vent holes, so that the heat of the battery pack 600 inside the cavity 111 can be released to reduce the temperature of the battery pack 600.

[0047] In some embodiments, the box body 100 of the present application specifically includes a bottom plate 110, a middle shell 120, and an upper cover 130. The middle shell 120 is a frame structural member with openings on both sides. The bottom plate 110 is disposed at the bottom of the middle shell 120, and the upper cover 130 is disposed on one side of the top of the middle shell 120. The bottom plate 110 and the upper cover 130 block the openings on both sides of the middle shell 120, so that the floor, the middle shell 120, and the upper cover 130 can enclose to form a cavity 111. When the battery pack 600 is disposed inside the box body 100, the battery pack 600 is located on the bottom plate 110. The fire protection cavity 131 can be disposed on the bottom plate 110, the middle shell 120, and / or the upper cover 130. Specifically, the fire protection cavity 131 is a cavity formed inside the solid structure of the bottom plate 110, the middle shell 120, and / or the upper cover 130. The vent holes 121 can be disposed on the bottom plate 110, the middle shell 120, and / or the upper cover 130, and the wiring ports can be disposed on the bottom plate 110, the middle shell 120, and / or the upper cover 130. The bottom plate 110, the middle shell 120, and the upper cover 130 can be connected in a detachable manner. When assembling the battery pack test tooling of the present application, the battery pack 600 can be placed on the bottom plate 110, then the middle shell 120 can be connected to the bottom plate 110, and finally the upper cover 130 can be connected to the middle shell 120.

[0048] The housing 100 may also be provided with a tray 140 and a sealing ring 150. The tray 140 may be disposed on the bottom plate 110, and the battery pack 600 may be placed on the tray 140. The sealing ring 150 is disposed at the connection between the middle shell 120 and the upper cover 130.

[0049] In some embodiments, the number of ventilation openings 121 of the housing 100 of the present application may be set to be multiple. The multiple ventilation openings 121 may be disposed in the cavity 111 of the housing 100 to have a higher air circulation efficiency between the inside and outside of the housing 100. In this way, when the battery pack 600 needs to be tested in a ventilated environment, the ventilation effect of the housing 100 is better. The multiple ventilation openings 121 may be opened on the side wall of the middle shell 120 and are arranged at intervals along the circumferential direction of the middle shell 120, so that the multiple ventilation openings 121 are orderly distributed on the middle shell 120. In addition, the circumferential side wall of the middle shell 120 faces each area in the cavity 111, so that the multiple ventilation openings 121 can communicate each area in the cavity 111 with the outside of the housing 100, thereby further improving the ventilation effect of the cavity 111 of the housing 100.

[0050] In addition, the multiple ventilation openings 121 may also be arranged at intervals along the height direction of the middle shell 120, so that the multiple ventilation openings 121 are arranged in an array on the outer wall of the middle shell 120, thereby increasing the number of ventilation openings 121 opened on the middle shell 120.

[0051] In some embodiments, the battery pack test tooling of the present application may also be provided with a first seal 300. The first seal 300 is detachably disposed at the ventilation opening 121 of the middle shell 120, so that the first seal 300 can open or close the ventilation opening 121. When the first seal 300 is located in the ventilation opening 121, the first seal 300 can block the ventilation opening 121, so that the cavity 111 of the housing 100 is a closed cavity. When the first seal 300 is removed from the ventilation opening 121 on the middle shell 120, the cavity 111 of the housing 100 can be communicated with the outside of the housing 100, so that the housing 100 is in a ventilated state. Thus, the cavity 111 in the housing 100 can be simply and conveniently switched between a sealed state and a ventilated state.

[0052] In some embodiments, to facilitate the opening and closing of the ventilation openings 121 of the box body 100 by the first seal 300, the first seal 300 may be arranged to include a sealing strip 310 and sealing posts 320. Among them, the sealing strip 310 is arranged on the outer wall of the middle shell 120, and the sealing strip 310 covers a plurality of ventilation openings 121 on the middle shell 120. Specifically, the sealing strip 310 is in a long shape, and the seal winds around the outer wall of the middle shell 120 along the circumferential direction of the middle shell 120. The sealing posts 320 are arranged on the side of the sealing strip 310 facing the middle shell 120. The number of the sealing posts 320 corresponds to the number of the ventilation openings 121 of the middle shell 120. A plurality of sealing posts 320 are respectively inserted into a plurality of ventilation openings 121, so that a plurality of sealing posts 320 can respectively block a plurality of ventilation openings 121.

[0053] It should be understood that the size and shape of the sealing posts 320 correspond to the size and hole shape of the ventilation openings 121, so that when the sealing posts 320 are inserted into the ventilation openings 121, the outer wall of the sealing posts 320 can be closely attached to the inner wall of the ventilation openings 121, so that the sealing posts 320 can reliably seal the ventilation openings 121. The sealing posts 320 can adopt elastic structural members. When the sealing posts 320 are inserted into the ventilation openings 121, the sealing posts 320 can have a certain degree of compressive deformation. In this way, the elastic force of the sealing posts 320 can make the outer wall of the sealing posts 320 closely attached to the inner wall of the ventilation openings 121. Specifically, the sealing posts 320 can adopt a rubber material, so that the sealing posts 320 have elasticity and better structural strength. The sealing strip 310 can be fixed on the outer wall of the middle shell 120 by bonding, so that the sealing strip 310 is detachably connected to the middle shell 120 conveniently.

[0054] It should be understood that when the battery pack 600 in the cavity 111 of the box body 100 is in a thermal runaway state and the air pressure in the cavity 111 rises, the gas in the cavity 111 will act on the sealing posts 320, thereby squeezing the sealing posts 320. When the air pressure in the cavity 111 rises to a certain pressure, the gas in the cavity 111 can push the sealing posts 320 to move the sealing posts 320 out of the box body 100, and then push the sealing strip 310 to separate from the outer wall of the middle shell 120. In this way, the sealing posts 320 can move out of the ventilation openings 121, so that the ventilation openings 121 are opened. After the ventilation openings 121 are opened, the cavity 111 is communicated with the outside of the box body 100 through the ventilation openings 121, so that the gas in the cavity 111 can be discharged to reduce the air pressure in the cavity 111. The heat generated by the battery pack 600 can also be dissipated to the outside of the box body 100 through the ventilation openings 121, so that the battery pack 600 is safer and more reliable during the test.

[0055] In some embodiments, the fire chamber 131 within the box body 100 of the present application may be disposed within the upper cover 130. Specifically, an inner cavity structure may be formed within the upper cover 130 to form the fire chamber 131. A fire port 132 may be opened on the upper cover 130. The fire port 132 is located on the side of the upper cover 130 facing the cavity 111 of the box body 100, and the fire port 132 is configured to be openable and closable. When the fire port 132 is closed, the fire chamber 131 is not in communication with the cavity 111. When the battery pack 600 is in a thermal runaway state, the fire port 132 can be opened, and the fire chamber 131 is in communication with the cavity 111 through the fire port 132. In this way, the fire extinguishing agent within the fire chamber 131 can be injected into the cavity 111 through the fire port 132 to reduce the temperature of the battery pack 600 and prevent further thermal runaway of the battery pack 600.

[0056] In addition, it should be understood that the fire chamber 131 is disposed within the upper cover 130 such that the fire chamber 131 is located on one side of the top of the box body 100. In this way, when the fire port 132 is opened, the fire extinguishing agent within the fire chamber 131 can more easily be injected into the cavity 111 under the action of gravity, making it easier for the fire extinguishing agent to be injected into the cavity 111.

[0057] In some embodiments, the fire chamber 131 within the upper cover 130 of the present application may be configured to include a plurality of fire sub-channels 131a. The plurality of fire sub-channels 131a are spaced apart along the length and / or width direction of the upper cover 130, and adjacent fire sub-channels 131a are in communication. In this way, the plurality of fire sub-channels 131a can be distributed in various regions within the upper cover 130. The plurality of fire sub-channels 131a are all filled with a fire extinguishing agent, such that a greater amount of fire extinguishing agent can be accommodated within the fire chamber 131 of the upper cover 130. The number of fire ports 132 is also a plurality. Each fire sub-channel 131a among the plurality of fire sub-channels 131a is in communication with at least one fire port 132. In this way, the fire extinguishing agent within each fire sub-channel 131a can be injected into the cavity 111 of the box body 100 through the corresponding fire port 132.

[0058] It should be understood that the distribution of the plurality of fire sub-channels 131a in various regions of the upper cover 130 enables the plurality of fire ports 132 to also be distributed in various regions of the upper cover 130. In this way, the fire extinguishing agent within the fire sub-channels 131a can be injected into various regions within the cavity 111 of the box body 100 through the plurality of fire ports 132, so that each part of the surface of the battery pack 600 can be covered by the fire extinguishing agent, making the efficiency of alleviating the thermal runaway state of the battery pack 600 higher.

[0059] In the present application, the plurality of fire sub-channels 131a may be spaced apart along the length direction of the upper cover 130, and adjacent fire sub-channels 131a may be in communication through a connection channel. Therefore, the plurality of connection channels may also be spaced apart along the length direction of the upper cover 130.

[0060] In some embodiments, the battery pack test tooling of the present application may further be provided with a second seal 400. The second seal 400 is detachably disposed in the fire port 132 of the upper cover 130, so that the second seal 400 can open and close the fire port 132. Specifically, when the second seal 400 is located in the fire port 132, the size and shape of the second seal 400 correspond to the size and hole shape of the fire port 132, so that when the second seal 400 is inserted into the fire port 132, the outer wall of the second seal 400 can closely fit the inner wall of the fire port 132, so that the second seal 400 can reliably seal the fire port 132. The second seal 400 may adopt an elastic structural member. When the second seal 400 is inserted into the fire port 132, the second seal 400 may have a certain degree of compressive deformation, so that the elastic force of the second seal 400 can make the outer wall of the second seal 400 closely fit the inner wall of the fire port 132. Specifically, the second seal 400 may adopt a rubber material, so that the second seal 400 has elasticity and better structural strength.

[0061] In some embodiments, the battery pack test tooling of the present application may further be provided with a pressurizing member 500. The pressurizing member 500 may be disposed on the upper cover 130. The pressurizing member 500 is configured to inject pressurized gas into the fire chamber 131 of the upper cover 130, so that the pressure in the fire chamber 131 increases. In this way, the pressure in the fire chamber 131 can extrude the second seal 400 out of the fire port 132, and the fire port 132 is opened, so that the fire chamber 131 is communicated with the cavity 111 of the box body 100 through the fire port 132, and the fire extinguishing agent in the fire chamber 131 can be injected into the cavity 111.

[0062] Specifically, the pressurizing member 500 may include a pressure gas cylinder. The output end of the pressurizing member 500 is communicated with the fire chamber 131 of the upper cover 130, so that the pressurizing member 500 can inject pressurized gas into the fire chamber 131. In addition, after the pressure in the fire chamber 131 increases, the fire extinguishing agent in the fire chamber 131 can also be sprayed into the cavity 111 of the box body 100 under the action of high pressure, so that the fire extinguishing agent can be better sprayed onto the battery pack 600, and the thermal runaway condition of the battery pack 600 can be fully alleviated.

[0063] The pressurizing member 500 is also electrically connected to the detecting member 200. When the detecting member 200 detects that the battery pack 600 in the cavity 111 is in a thermal runaway state, it can control the pressurizing member 500 to inject pressurized gas into the fire chamber 131, so that the fire port 132 is opened.

[0064] In addition, in other embodiments, an openable and closable mechanical valve or solenoid valve may be provided at the fire port 132, so that the fire port 132 can also be controlled to open or close.

[0065] In some embodiments, the detection component 200 of the present application may specifically include a temperature sensor and a pressure sensor. Among them, both the temperature sensor and the pressure sensor can be arranged in the cavity 111 of the box body 100. The temperature sensor can detect the temperature in the cavity 111, and the pressure sensor can detect the pressure in the cavity 111. Both the temperature sensor and the pressure sensor are electrically connected to the pressurizing component 500. When the temperature detected by the temperature sensor in the cavity 111 reaches the preset temperature, it can be determined that the battery pack 600 is in a thermal runaway state. When the pressure detected by the pressure sensor in the cavity 111 reaches the preset pressure, it can be determined that the battery pack 600 is in a thermal runaway state. Therefore, when any one of the temperature and pressure in the cavity 111 reaches the threshold value, the pressurizing component 500 can be activated to fully solve the thermal runaway state of the battery pack 600.

[0066] Finally, it should be noted that 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack test tool, characterized in that: include: A box (100), wherein the box (100) has a fire-fighting cavity (131) for accommodating a fire-extinguishing agent and a cavity (111) for accommodating a battery pack (600), wherein the fire-fighting cavity (131) is configured to be connectable to or disconnectable from the cavity (111), and a vent (121) and a wiring port connected to the cavity (111) are provided on a surface of the box (100), wherein the vent (121) is configured to be openable and closable; A detection component (200) is disposed on the box (100), and the detection component (200) is configured to detect whether the battery pack (600) is in thermal runaway; Wherein, when the battery pack (600) thermally runs away, the fire fighting cavity (131) is connected to the containing cavity (111).

2. The battery pack test fixture according to claim 1, characterized in that: The box body (100) comprises a bottom plate (110), a middle shell (120) and an upper cover (130); the middle shell (120) has openings on both sides; the bottom plate (110) and the upper cover (130) block the openings on both sides of the middle shell (120); the bottom plate (110), the middle shell (120) and the upper cover (130) are arranged to form the containing cavity (111); the fire fighting cavity (131) is arranged in the bottom plate (110), the middle shell (120) and / or the upper cover (130); the ventilation port (121) and the wiring port are opened in the bottom plate (110), the middle shell (120) and / or the upper cover (130).

3. The battery pack test fixture according to claim 2, characterized in that: There are a plurality of ventilation openings (121), and the plurality of ventilation openings (121) are opened on the side wall of the middle shell (120) and are distributed at intervals along the circumference of the middle shell (120).

4. The battery pack test fixture according to claim 3, characterized in that: It also includes a first sealing member (300), wherein the first sealing member (300) is detachably disposed on the ventilation opening (121).

5. The battery pack test fixture according to claim 4, characterized in that: The first sealing member (300) comprises a sealing strip (310) and a sealing pile (320); the sealing strip (310) is attached to the outer wall of the middle shell (120) and covers the ventilation opening (121); the sealing pile (320) is arranged on the sealing strip (310) and blocks the ventilation opening (121).

6. The battery pack test fixture according to claim 2, characterized in that: The fire-fighting chamber (131) is arranged in the upper cover (130), and the upper cover (130) is provided with a fire-fighting port (132). The fire-fighting port (132) is configured to be openable and closable so as to connect or disconnect the fire-fighting chamber (131) with the containing chamber (111).

7. The battery pack test fixture according to claim 6, characterized in that: The fire-fighting cavity (131) comprises a plurality of fire-fighting sub-channels (131a), the plurality of fire-fighting sub-channels (131a) are spaced apart along the length and / or width direction of the upper cover (130), adjacent fire-fighting sub-channels (131a) are connected, the number of the fire-fighting openings (132) is plural, and each of the fire-fighting sub-channels (131a) is connected to at least one of the fire-fighting openings (132).

8. The battery pack test fixture according to claim 6, characterized in that: It also includes a second sealing member (400), which is detachably disposed in the fire-fighting opening (132).

9. The battery pack test fixture according to claim 8, characterized in that: The invention also includes a pressurizing member (500), wherein the pressurizing member (500) is disposed on the upper cover (130) and is electrically connected to the detection member (200). The pressurizing member (500) is configured to inject gas into the fire-fighting cavity (131) so as to increase the pressure in the fire-fighting cavity (131) to squeeze the second sealing member (400) out of the fire-fighting port (132).

10. The battery pack test tool according to any one of claims 1 to 9, characterized in that: The detection component (200) comprises a temperature sensor and a pressure sensor, both of which are electrically connected to the corresponding pressurizing component (500); the temperature sensor and the pressure sensor are arranged in the box (100) to detect the temperature and pressure in the cavity (111).

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