Safety explosion-proof cabinet for testing thermal runaway of battery

Abstract

The utility model relates to the technical field of explosion-proof cabinets, and discloses a safe explosion-proof cabinet used for testing thermal runaway of batteries, which comprises an explosion-proof cabinet main body, an open box body, a storage pore plate and a drawing groove, the explosion-proof cabinet main body has an opening direction, an accommodating cavity is arranged in the explosion-proof cabinet main body, a plurality of first windows facing the opening direction are arranged on the explosion-proof cabinet main body, and a plurality of second windows facing the opening direction are arranged in the accommodating cavity. The plurality of first windows are respectively provided with a ventilation box cover; the multiple open box bodies are distributed in the containing cavity at intervals and face the first window, each open box body comprises a side wall plate, the side wall plates are fixedly connected with the first window, and the open box bodies are further provided with ventilation openings opposite to the first window; a plurality of storage pore plates are arranged, the storage pore plates are mounted in the open box body, and a battery bearing surface is formed on one side of each storage pore plate; and the multiple drawing grooves are movably installed in the open box body, the moving direction of the drawing grooves is arranged towards the opening direction of the first window, and a material receiving cavity is formed in the other side, corresponding to the storage hole plate, of each drawing groove.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof cabinets, in particular to a safety explosion-proof cabinet for testing battery thermal runaway. Background Technique

[0002] At present, lithium batteries are common power modules for new energy vehicles. When conducting relevant detection tests on lithium batteries, defect cell performance tests, safety tests such as short circuit, overcharge, and over-discharge at the cell level generally need to be carried out in a test cabinet. Once thermal runaway occurs, it may damage surrounding facilities.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN208722929U and the authorization announcement date of April 9, 2019 discloses a large-capacity polymer lithium-ion battery charge and discharge explosion-proof box, which specifically includes an explosion-proof box body and a clamping assembly. The explosion-proof box body has a plurality of columns and a plurality of layers spaced along the height direction of the columns. The layers are used to divide the explosion-proof box body into a plurality of layered accommodation chambers. Each accommodation chamber can be used to provide a test space for the lithium-ion battery to be tested. Moreover, the explosion-proof box body also has a side wall for closing the accommodation chamber, and the side wall is provided with an explosion-proof box door for opening or closing the accommodation chamber. By constructing an accommodation chamber in the explosion-proof box body, the lithium-ion battery can be placed in a closed environment to avoid the impact of battery explosion or combustion on the external environment.

[0004] However, when multiple batteries are tested simultaneously, if one battery undergoes thermal runaway, it is easy to affect other batteries in the box. Moreover, the closed environment of the accommodation chamber is not conducive to heat dissipation, and there are safety hazards such as damage to the explosion-proof box when thermal runaway occurs. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is that when multiple batteries are tested simultaneously, if one battery undergoes thermal runaway, it is easy to affect other batteries in the box. Moreover, the closed environment of the accommodation chamber is not conducive to heat dissipation, and there are safety hazards such as damage to the explosion-proof box when thermal runaway occurs.

[0006] In order to solve the above technical problems, the utility model provides a technical solution for a safety explosion-proof cabinet for testing battery thermal runaway:

[0007] The safety explosion-proof cabinet for testing battery thermal runaway includes:

[0008] An explosion-proof cabinet main body, the explosion-proof cabinet main body has an opening direction, an accommodation cavity is provided inside the explosion-proof cabinet main body, and a plurality of first windows facing the opening direction are provided on the explosion-proof cabinet main body, and a ventilation box cover is installed on each of the plurality of first windows;

[0009] An open box body, with a plurality of said open box bodies provided. The plurality of said open box bodies are spaced apart in the accommodation cavity and face the first window. The open box body includes a side wall plate, and the side wall plate is fixedly connected to the first window. The open box body also has a ventilation opening on the side facing away from the first window;

[0010] A storage hole plate, with a plurality of said storage hole plates provided. The storage hole plates are installed in the open box body. The storage hole plates are provided with blanking holes, and one side of the storage hole plate forms a battery bearing surface;

[0011] A draw groove, with a plurality of said draw grooves provided. The draw grooves are movably installed in the open box body, and the moving direction of the draw grooves is arranged towards the opening direction of the first window. The draw grooves form a receiving cavity corresponding to the other side of the storage hole plate.

[0012] Further, the explosion-proof cabinet body has a length direction and a height direction. The opening direction, the length direction, and the height direction intersect pairwise. The side wall plate includes two first side wall plates and two second side wall plates. The two first side wall plates are arranged in parallel at intervals along the length direction, and the two second side wall plates are arranged in parallel at intervals along the height direction. The two first side wall plates and the two second side wall plates are fixedly connected to form a square space.

[0013] Further, the plurality of said open box bodies are arranged in columns at intervals along the length direction, and the plurality of said open box bodies are arranged in at least two columns at intervals along the height direction.

[0014] Further, the two first side wall plates are respectively provided with side protrusions, and the side protrusions are in supporting cooperation with the storage hole plate along the height direction.

[0015] Further, the draw groove is provided with a first groove plate and a second groove plate. The first groove plate and the second groove plate are arranged opposite to each other along the opening direction, and the first groove plate is provided with a ventilation hole corresponding to the first window.

[0016] Further, on the side of the explosion-proof cabinet body facing away from the first window, a breathable back plate is provided. The breathable back plate is provided with a plurality of breathable holes, and the ventilation opening is in butt joint cooperation with the breathable back plate.

[0017] Further, the breathable back plate is also provided with a plurality of wire passing holes, and the wire passing holes are communicated with the ventilation opening.

[0018] Further, the ventilation box cover is hinged to the explosion-proof cabinet body, and a locking member is also provided between the ventilation box cover and the explosion-proof cabinet body.

[0019] Further, one side of the ventilation box cover is connected to the explosion-proof cabinet main body by a hinge, and the locking part is arranged on the side of the ventilation box cover facing away from the hinge.

[0020] Further, the locking part is a buckle, and the locking part includes a hanging ear buckle plate and a hook head. The hanging ear buckle plate is hinged to the ventilation box cover, the hook head is fixedly installed at a position on the explosion-proof cabinet main body close to the first window, and the hanging ear buckle plate is engaged with the hook head.

[0021] Compared with the prior art, a safety explosion-proof cabinet for testing battery thermal runaway of the present utility model has the beneficial effects that: the safety explosion-proof cabinet for testing battery thermal runaway adopts the design forms of an explosion-proof cabinet main body, an open box body, a placing hole plate and a draw groove. An accommodation cavity is arranged inside the explosion-proof cabinet main body, and a plurality of first windows facing the opening direction are opened on the explosion-proof cabinet main body. A plurality of ventilation box covers are respectively installed on the plurality of first windows, and a plurality of open box bodies are spaced apart and distributed in the accommodation cavity and face the first windows.

[0022] Since the explosion-proof cabinet main body is provided with an accommodation cavity for installing a plurality of open box bodies at intervals, different open box bodies can separately accommodate the batteries to be tested, meeting the requirements of simultaneously testing and / or storing a plurality of batteries. The open box body faces the first window and can be opened and closed in combination with the ventilation box cover. After opening, the battery to be tested can be placed in the open box body or the tested battery can be taken out from it. After the battery is placed and the wire harness is connected, the ventilation box cover can be closed, so that the battery to be tested is in a space protected by the box body and breathable.

[0023] Among them, the open box body is designed with side wall plates and ventilation openings. The ventilation openings are arranged facing away from the first window. The side wall plates are fixedly connected at the first window. The side wall plates can play an isolation and protection role for the adjacent open box bodies in the accommodation cavity. The ventilation box cover and the ventilation openings constitute the ventilation path of the open box body in the opening direction. When thermal runaway occurs, it is beneficial for heat to dissipate outward from the ventilation box cover and the ventilation openings, avoiding excessive thermal influence on the batteries in the adjacent open box bodies and preventing safety hazards such as the destruction of the safety explosion-proof cabinet caused by thermal runaway.

[0024] In addition, the placing hole plate is installed in the open box body, a blanking hole is opened on the placing hole plate, and the draw groove is movably installed in the open box body. A receiving cavity is formed on the other side of the draw groove corresponding to the placing hole plate. The battery bearing surface of the placing hole plate can be used to place the battery to be tested. Once the battery undergoes thermal runaway during the test, the burned residue ash will fall through the blanking hole into the receiving cavity of the draw groove. By moving the draw groove along the opening direction and taking it out, the residue ash generated by thermal runaway can be conveniently and quickly cleaned up. Description of the Drawings

[0025] Figure 1It is a three-dimensional schematic diagram of a safety explosion-proof cabinet (front view) for testing battery thermal runaway in an embodiment of the present utility model;

[0026] Figure 2 It is an assembled three-dimensional diagram of an open box body and a ventilation box cover in an embodiment of the present utility model;

[0027] Figure 3 It is an assembled three-dimensional diagram of an open box body and a draw-out groove in an embodiment of the present utility model;

[0028] Figure 4 It is a three-dimensional schematic diagram of a safety explosion-proof cabinet (rear view) for testing battery thermal runaway in an embodiment of the present utility model;

[0029] Figure 5 is Figure 4 a three-dimensional schematic diagram of a safety explosion-proof cabinet (excluding the breathable back panel) for testing battery thermal runaway in

[0030] In the figure: 1 - explosion-proof cabinet main body, 10 - accommodating cavity, 11 - first window, 12 - ventilation box cover, 13 - hinge, 14 - locking component, 141 - hanging ear buckle plate, 142 - hook head, 15 - breathable back panel, 16 - breathable hole, 17 - wire passing hole, 18 - roller, 2 - open box body, 20 - square space, 21 - side wall plate, 211 - first side wall plate, 212 - second side wall plate, 22 - ventilation opening, 23 - side protrusion, 3 - placing hole plate, 30 - battery bearing surface, 31 - blanking hole, 4 - draw-out groove, 40 - material receiving cavity, 41 - first groove plate, 42 - second groove plate, 43 - air guide hole, 44 - handle, X - opening direction, Y - length direction, Z - height direction. Detailed implementation manners

[0031] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

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

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

[0034] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "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 directly connected or indirectly connected through an intermediate medium, and it may 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 circumstances.

[0035] As Figures 1 to 5 shown, a safety explosion-proof cabinet for testing battery thermal runaway according to an embodiment of the present utility model includes an explosion-proof cabinet main body 1, an open box body 2, a storage hole plate 3, and a draw slot 4. The explosion-proof cabinet main body 1 has an opening direction X. An accommodation cavity 10 is provided inside the explosion-proof cabinet main body 1. A plurality of first windows 11 facing the opening direction X are provided on the explosion-proof cabinet main body 1, and ventilation box covers 12 are respectively installed on the plurality of first windows 11; A plurality of open box bodies 2 are provided, and the plurality of open box bodies 2 are spaced apart in the accommodation cavity 10 and face the first windows 11. The open box body 2 includes a side wall plate 21, and the side wall plate 21 is fixedly connected to the first window 11. A ventilation opening 22 is further provided on the open box body 2 facing away from the first window 11.

[0036] A plurality of storage hole plates 3 are provided. The storage hole plates 3 are installed in the open box body 2. Material dropping holes 31 are formed on the storage hole plates 3, and a battery bearing surface 30 is formed on one side of the storage hole plates 3; A plurality of draw slots 4 are provided. The draw slots 4 are movably installed in the open box body 2, and the moving direction of the draw slots 4 is arranged towards the opening direction X of the first window 11. A receiving cavity 40 is formed on the other side of the draw slots 4 corresponding to the storage hole plates 3.

[0037] The safety explosion-proof cabinet for testing battery thermal runaway adopts the design form of the explosion-proof cabinet main body 1, the open box body 2, the storage hole plate 3, and the draw slot 4. An accommodation cavity 10 is provided inside the explosion-proof cabinet main body 1. A plurality of first windows 11 facing the opening direction X are provided on the explosion-proof cabinet main body, and ventilation box covers 12 are respectively installed on the plurality of first windows 11. The plurality of open box bodies 2 are spaced apart in the accommodation cavity 10 and face the first windows 11.

[0038] Since the explosion-proof cabinet body 1 is provided with a receiving cavity 10 for the spaced installation of a plurality of open boxes 2, different open boxes 2 can separately accommodate the batteries to be tested, meeting the requirement of simultaneously testing and / or storing a plurality of batteries. The open box 2 faces the first window 11 and can be opened and closed in combination with the ventilation box cover 12. After opening, the battery to be tested can be placed in the open box 2 or the tested battery can be taken out. After the battery is placed and the wire harness is connected, the ventilation box cover 12 can be closed, so that the battery to be tested is in a space protected by the box and permeable to air.

[0039] Among them, the open box 2 is designed with a side wall plate 21 and a ventilation opening 22. The ventilation opening 22 is arranged back to the first window 11. The side wall plate 21 is fixedly connected to the first window 11. The side wall plate 21 can play an isolation and protection role for the adjacent open box 2 in the receiving cavity 10. The ventilation box cover 12 and the ventilation opening 22 constitute the ventilation path of the open box 2 in the opening direction. In the event of thermal runaway, it is beneficial for heat to dissipate outward from the ventilation box cover 12 and the ventilation opening 22, avoiding excessive thermal influence on the batteries in the adjacent open boxes 2 and preventing potential safety hazards such as the destruction of the explosion-proof cabinet caused by thermal runaway.

[0040] In addition, the placement hole plate 3 is installed in the open box 2. The placement hole plate 3 is provided with a material dropping hole 31. The draw-out groove 4 is movably installed in the open box 2. The draw-out groove 4 forms a material receiving cavity 40 corresponding to the other side of the placement hole plate 3. The battery bearing surface 30 of the placement hole plate 3 can be used to place the battery to be tested. Once the battery undergoes thermal runaway during the test, the burned residue and ash fall through the material dropping hole 31 into the material receiving cavity 40 of the draw-out groove 4. By moving the draw-out groove 4 along the opening direction X and taking it out, the residue and ash generated by thermal runaway can be conveniently and quickly cleaned up.

[0041] In this embodiment, the explosion-proof cabinet body 1 has a length direction Y and a height direction Z. The opening direction X, the length direction Y, and the height direction Z intersect pairwise. The side wall plate 21 includes two first side wall plates 211 and two second side wall plates 212. As Figure 2 、 Figure 3 shown, the two first side wall plates 211 are arranged in parallel at intervals along the length direction Y, and the two second side wall plates 212 are arranged in parallel at intervals along the height direction Z. The two first side wall plates 211 and the two second side wall plates 212 are fixedly connected to form a square space 20. The side wall plate 21 is made of stainless steel plate, with high structural strength, strong heat resistance and anti-deformation ability. The assembly operation of the open box 2 is simple, and the created square space 20 is more regular.

[0042] Specifically, a plurality of open boxes 2 are arranged in columns at intervals along the length direction Y, and a plurality of open boxes 2 are arranged in at least two columns at intervals along the height direction Z. This can not only make full use of the limited space of the accommodation cavity 10 of the explosion-proof cabinet body 1 and reasonably plan more battery test spaces, but also ensure that there is enough space reserved between adjacent open boxes 2 to avoid the thermal influence that a thermal runaway of one battery may cause to other batteries.

[0043] Two first side wall plates 211 are respectively provided with side protrusions 23, and the side protrusions 23 are in supporting cooperation with the placement hole plate 3 along the height direction Z. As a further preferred solution, the side protrusions 23 are side convex strips arranged along the opening direction X. The placement hole plate 3 can be placed in the open box 2 by using the two side protrusions 23, and the placement hole plate 3 can be taken out smoothly after the test, so as to take the battery and clean the residues generated by thermal runaway.

[0044] In this embodiment, the draw-out groove 4 is provided with a first groove plate 41 and a second groove plate 42. The first groove plate 41 and the second groove plate 42 are arranged opposite to each other along the opening direction X, and the first groove plate 41 is provided with a vent hole 43 corresponding to the first window 11. Once the battery has a thermal runaway, the heat can also be dissipated outward through the placement hole plate 3 and the first groove plate 41, effectively expanding the area of breathable heat dissipation, ensuring that the heat can be diffused in time and quickly, and having a good pressure relief effect. A handle 44 is also installed on the first groove plate 41, which is convenient for pulling out or pushing in the draw-out groove 4.

[0045] Moreover, a breathable back plate 15 is provided on the side of the explosion-proof cabinet body 1 facing away from the first window 11. The breathable back plate 15 is provided with a plurality of breathable holes 16, and the ventilation opening 22 is in abutting cooperation with the breathable back plate 15. The breathable back plate 15 is also provided with a plurality of wire passing holes 17, and the wire passing holes 17 are communicated with the ventilation opening 22. During the test, the wire harness can be introduced into the open box 2 from the wire passing holes 17 and the ventilation opening 22, and the wire harness is electrically connected to the battery to be tested, so that the performance test of defective battery cells, safety tests such as short circuit, overcharge, and over-discharge at the cell level can be carried out. In addition, four rollers 18 are also installed on the explosion-proof cabinet body 1, and the position of the explosion-proof cabinet body 1 can be flexibly moved according to the actual requirements of the test site.

[0046] Among them, the ventilation box cover 12 is hinged to the explosion-proof cabinet body 1, and a locking member 14 is also provided between the ventilation box cover 12 and the explosion-proof cabinet body 1. Specifically, one side of the ventilation box cover 12 is connected to the explosion-proof cabinet body 1 by a hinge 13, and the locking member 14 is arranged on the side of the ventilation box cover 12 opposite to the hinge 13. The ventilation box cover 12 can be rotated open or closed around the hinge 13, and the ventilation box cover 12 is locked by using the locking member 14 after being closed, which is more convenient and safe.

[0047] In addition, the locking member 14 is a hasp, comprising a hook 141 and a hook head 142. The hook 141 is hingedly connected to the vent box cover 12, and the hook head 142 is fixedly mounted on the explosion-proof cabinet body 1 near the first window 11. The hook 141 and the hook head 142 engage with each other. During use, the hook 141 can be pressed to engage the hook 142, thereby securely sealing the vent box cover 12 at the opening of the open cabinet 2, thereby preventing damage to surrounding equipment due to explosion splashes in the event of thermal runaway.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A safety explosion-proof cabinet for testing battery thermal runaway, characterized in that, Including: An explosion-proof cabinet body (1), the explosion-proof cabinet body (1) has an opening direction (X), an accommodation cavity (10) is provided inside the explosion-proof cabinet body (1), and a plurality of first windows (11) facing the opening direction (X) are provided on the explosion-proof cabinet body (1), and ventilation box covers (12) are respectively installed on the plurality of first windows (11); An open-top box body (2), a plurality of the open-top box bodies (2) are provided, and the plurality of open-top box bodies (2) are spaced apart in the accommodation cavity (10) and face the first window (11), the open-top box body (2) includes a side wall plate (21), the side wall plate (21) is fixedly connected to the first window (11), and a ventilation opening (22) is further provided on the open-top box body (2) facing away from the first window (11); A storage hole plate (3), a plurality of the storage hole plates (3) are provided, the storage hole plate (3) is installed in the open-top box body (2), a material dropping hole (31) is formed on the storage hole plate (3), and a battery bearing surface (30) is formed on one side of the storage hole plate (3); A draw groove (4), a plurality of the draw grooves (4) are provided, the draw groove (4) is movably installed in the open-top box body (2), and the moving direction of the draw groove (4) is arranged towards the opening direction (X) of the first window (11), and a receiving cavity (40) is formed on the other side of the draw groove (4) corresponding to the storage hole plate (3).

2. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 1, characterized in that The explosion-proof cabinet body (1) has a length direction (Y) and a height direction (Z), the opening direction (X), the length direction (Y) and the height direction (Z) intersect pairwise, the side wall plate (21) includes two first side wall plates (211) and two second side wall plates (212), the two first side wall plates (211) are arranged in parallel at intervals along the length direction (Y), the two second side wall plates (212) are arranged in parallel at intervals along the height direction (Z), and the two first side wall plates (211) and the two second side wall plates (212) are fixedly connected to form a square space (20).

3. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 2, characterized in that, The plurality of open-top box bodies (2) are arranged in columns at intervals along the length direction (Y), and the plurality of open-top box bodies (2) are arranged in at least two columns at intervals along the height direction (Z).

4. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 2, characterized in that, Side protrusions (23) are respectively provided on the two first side wall plates (211), and the side protrusions (23) are in supporting cooperation with the storage hole plate (3) along the height direction (Z).

5. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 1, characterized in that, The draw groove (4) is provided with a first groove plate (41) and a second groove plate (42), the first groove plate (41) and the second groove plate (42) are arranged opposite to each other along the opening direction (X), and a ventilation hole (43) is provided on the first groove plate (41) corresponding to the first window (11).

6. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 1, characterized in that, A breathable back plate (15) is provided on the side of the explosion-proof cabinet body (1) facing away from the first window (11), a plurality of breathable holes (16) are provided on the breathable back plate (15), and the ventilation opening (22) is in abutting cooperation with the breathable back plate (15).

7. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 6, characterized in that, The breathable back plate (15) is further provided with a plurality of threading holes (17), and the threading holes (17) are connected to the ventilation opening (22).

8. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 1, characterized in that, The ventilation box cover (12) is hingedly connected to the explosion-proof cabinet body (1), and a locking member (14) is also provided between the ventilation box cover (12) and the explosion-proof cabinet body (1).

9. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 8, characterized in that, One side of the ventilation box cover (12) is connected to the explosion-proof cabinet body (1) via a hinge (13), and the locking member (14) is arranged on a side of the ventilation box cover (12) facing away from the hinge (13).

10. The safety explosion-proof cabinet for testing battery thermal runaway according to claim 8, characterized in that, The locking member (14) is a hasp, and the locking member (14) comprises a hanging ear buckle plate (141) and a hook head (142). The hanging ear buckle plate (141) is hingedly connected to the ventilation box cover (12), and the hook head (142) is fixedly installed on the explosion-proof cabinet body (1) near the first window (11). The hanging ear buckle plate (141) and the hook head (142) are hooked and matched.

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