Waterproof battery shell for battery module

Abstract

The utility model relates to the technical field of battery shells, and discloses a waterproof battery shell for a battery module, which comprises a shell and a shell cover, the shell comprises an outer layer and an inner layer; the inner layer is arranged in the outer layer, and a water-resisting layer is formed between the inner layer and the outer layer; at least one group of grooves are formed in the outer layer, and the grooves are communicated with the water-resisting layer; the shell cover is arranged above the shell; a first sealing piece is arranged between the shell cover and the outer layer; a waterproof layer is arranged in the inner layer; the waterproof layer is located on the side away from the waterproof layer. By arranging the water-resisting layer, the first sealing piece, the groove and the waterproof layer, the shell cover and the outer layer can be tightly connected through the first sealing piece, water is prevented from entering the inner layer from a gap between the shell cover and the shell, and when water invades, the invaded water is drained to the bottom end of the shell through the water-resisting layer; meanwhile, the waterproof layer is arranged, so that the residual water is further prevented from entering the inner layer, and the waterproof effect of the battery shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery shells, in particular to a waterproof battery shell for a battery module. Background Art

[0002] The battery module is the energy unit of the battery pack. The battery module includes multiple battery cells and connecting plates, wherein the multiple battery cells are arranged in sequence to form a battery cell group, and the two ends of the connecting plate are respectively connected to the poles of two battery cells, thereby realizing the electrical connection of the multiple battery cells.

[0003] For example, the Chinese patent document with announcement number CN215578834U, the patent name of which is a battery casing and a battery module, mentions that "the battery casing includes: a shell structure, an end portion of which is provided with an opening in the length direction; a rib structure, which is provided on the inner wall of the shell structure, and the rib structure extends along the length direction of the shell structure; an end plate, which is covered on the opening, and the part where the end plate and the shell structure are connected is provided with a step structure, and the step structure is respectively abutted against the end portion of the rib structure close to the opening and the inner wall of the shell structure close to the opening". This structure solves the problems of poor anti-extrusion ability and poor assembly fit between the end plate and the shell structure. However, the existing battery casing has poor waterproof effect. When the battery casing is sprayed with water, water can easily enter the interior of the battery casing from the gap between the shell structures or the gap between the shell and the end cover. The intrusion of water can easily cause a short circuit in the battery module or even damage the battery module.

[0004] Therefore, there is an urgent need for a waterproof battery casing for a battery module to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of the utility model is to provide a waterproof battery casing for a battery module to solve the problem that the existing battery casing has poor waterproof effect, and water can easily enter the interior of the battery casing from the gap between the casing structures or the gap between the casing and the end cover, which can easily cause a short circuit in the battery module or even damage the battery module.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A waterproof battery shell for a battery module comprises a shell and a shell cover; the shell comprises an outer layer and an inner layer; the inner layer is arranged inside the outer layer, and a waterproof layer is formed between the inner layer and the outer layer; at least one group of grooves is provided in the outer layer, and the grooves are connected to the waterproof layer; the shell cover is arranged above the shell; a first sealing member for sealing is provided between the shell cover and the outer layer; a waterproof layer is provided in the inner layer; the waterproof layer is located on the side of the waterproof layer away from the outer layer.

[0008] As a preferred solution for the waterproof battery shell for the battery module, the grooves are arranged in three groups, the three groups of grooves are distributed in the shell, and each group of grooves is connected to the waterproof layer.

[0009] As a preferred solution for the waterproof battery housing for the battery module, a water absorbing layer is provided in the groove, and the water absorbing layer is detachably connected to the groove.

[0010] As a preferred solution of the waterproof battery shell for the battery module, the shell is provided with sealing blocks at both ends corresponding to the groove, and the sealing blocks are detachably connected to the shell.

[0011] As a preferred solution for the waterproof battery housing for the battery module, the outer layer includes a side plate and a bottom plate; the bottom plate is arranged at the bottom end of the side plate and is detachably connected to the side plate; the groove is arranged on the bottom plate.

[0012] As a preferred solution for a waterproof battery shell for a battery module, the first sealing member includes a fixing portion and an abutting portion; the fixing portion is arranged at the bottom end of the shell cover; the abutting portion is arranged at the bottom end of the fixing portion and can abut against the outer layer.

[0013] As a preferred solution of the waterproof battery housing for the battery module, the fixing portion and the abutting portion are integrally formed, and the outer diameter of the fixing portion is larger than the outer diameter of the abutting portion.

[0014] As a preferred solution for the waterproof battery shell for the battery module, the fixing portion and the shell cover are provided with a first mounting hole; a second mounting hole is provided between the abutting portion and the outer layer, and the abutting portion can enter or leave the second mounting hole.

[0015] As a preferred solution for the waterproof battery shell for the battery module, the inner layer includes a base layer; the base layer is arranged on one side of the waterproof layer; the waterproof layer is arranged on one side of the base layer, and a protective layer is arranged on the waterproof layer.

[0016] As a preferred solution of the waterproof battery shell for the battery module, a hand piece is provided on the shell cover, and a hand slot is provided between the hand piece and the shell cover.

[0017] The beneficial effects of the utility model are:

[0018] By providing a waterproof layer, a first sealing member, a groove and a waterproof layer, the shell cover and the outer layer can be tightly connected through the first sealing member to prevent the gap between the shell cover and the shell from entering the inner layer. By providing a waterproof layer, when water invades, the invading water is drained to the bottom of the shell through the waterproof layer, so that the water gathers in the groove, further preventing the water from entering the inner layer. At the same time, by providing a waterproof layer, residual water is further prevented from entering the inner layer, thereby improving the waterproof effect of the battery shell and increasing the service life of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a waterproof battery housing for a battery module provided by the utility model;

[0020] Figure 2 A schematic diagram of the side internal structure of a waterproof battery housing for a battery module provided by the utility model;

[0021] Figure 3 A schematic diagram of the side structure of a waterproof battery housing for a battery module provided by the utility model;

[0022] Figure 4 for Figure 2 A is an enlarged schematic diagram;

[0023] Figure 5 This is a schematic diagram of the internal structure of the shell provided by the utility model.

[0024] Among them, the reference numerals in the figure are:

[0025] 10. Shell cover; 11. First sealing member; 111. Fixed portion; 112. Abutting portion; 12. Hand piece; 20. Outer layer; 201. Side panel; 202. Bottom panel; 21. Groove; 211. Water-absorbing layer; 22. Sealing block; 30. Inner layer; 32. Waterproof layer; 33. Protective layer; 40. Waterproof layer. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0027] In the description of the present invention, unless otherwise clearly specified 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 an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present utility model.

[0030] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more than two. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] In one embodiment of the present invention, Figure 1-5 As shown, a waterproof battery shell for a battery module is provided, and the waterproof battery shell for the battery module includes a shell and a shell cover 10. The shell includes an outer layer 20 and an inner layer 30. The inner layer 30 is arranged in the outer layer 20, and a waterproof layer 40 is formed between the inner layer 30 and the outer layer 20. At least one group of grooves 21 is provided in the outer layer 20, and the grooves 21 are connected to the waterproof layer 40. The shell cover 10 is arranged above the shell. A first sealing member 11 for sealing is provided between the shell cover 10 and the outer layer 20, and the first sealing member 11 is a sealing ring. A waterproof layer 32 is provided in the inner layer 30, and the waterproof layer 32 is made of waterproof material. The waterproof layer 32 is located on the side of the waterproof layer 40 away from the outer layer 20.

[0032] By providing a waterproof layer 40, a first sealing member 11, a groove 21 and a waterproof layer 32, the shell cover 10 and the outer layer 20 can be tightly connected through the first sealing member 11, thereby preventing the gap between the shell cover 10 and the shell from entering the inner layer 30. By providing a waterproof layer 40, when water invades, the invading water is drained to the bottom of the shell through the waterproof layer 40, so that the water gathers in the groove 21, further preventing the water from entering the inner layer 30. At the same time, by providing a waterproof layer 32, residual water is further prevented from entering the inner layer 30, thereby improving the waterproof effect of the battery shell and improving the service life of the battery module.

[0033] Preferably, three groups of grooves 21 are equally distributed in the outer shell, and each group of grooves 21 is connected to the waterproof layer 40. By providing three groups of grooves 21, when water intrudes, the intruding water is drained to the bottom of the outer shell through the waterproof layer 40, so that the water gathers in the grooves 21, further preventing the water from entering the inner layer 30, thereby improving the waterproof effect of the battery shell.

[0034] Furthermore, a water-absorbing layer 211 is provided in the groove 21, and the water-absorbing layer 211 is detachably connected to the groove 21. In this embodiment, the water-absorbing layer 211 is made of a water-absorbing material, and may be a sponge. The water-absorbing layer 211 absorbs the water in the groove 21, and prevents the water from accumulating too much in the groove 21 and flowing back into the inner layer 30, thereby improving the waterproof effect of the battery shell. Moreover, the water-absorbing layer 211 is detachably connected to the groove 21, which facilitates the replacement of the water-absorbing layer 211 and improves the service life of the battery shell.

[0035] Furthermore, the shell is provided with sealing blocks 22 at both ends corresponding to the groove 21, and the sealing blocks 22 are detachably connected to the shell. The detachable connection between the sealing blocks 22 and the shell facilitates the staff to replace the water absorbing layer 211 in the battery shell, thereby improving the waterproof effect of the battery shell.

[0036] Specifically, the outer layer 20 includes a side plate 201 and a bottom plate 202. The bottom plate 202 is disposed at the bottom end of the side plate 201 and is detachably connected to the side plate 201. The groove 21 is disposed on the bottom plate 202. The detachable connection between the bottom plate 202 and the side plate 201 facilitates the staff to clean the water in the groove 21 and replace the water-absorbing material in time, thereby improving the waterproof effect of the battery shell.

[0037] Preferably, the first sealing member 11 includes a fixing portion 111 and an abutting portion 112. The fixing portion 111 is disposed at the bottom end of the shell cover 10. The abutting portion 112 is disposed at the bottom end of the fixing portion 111 and can abut against the outer layer 20. The abutting portion 112 abuts against the outer layer 20 to improve the sealing between the shell cover 10 and the outer layer 20, prevent a large amount of water from invading the gap between the two, and improve the waterproof effect of the battery shell.

[0038] Furthermore, the fixing portion 111 and the abutting portion 112 are integrally formed, and the outer diameter of the fixing portion 111 is larger than the outer diameter of the abutting portion 112. A first mounting hole is provided between the fixing portion 111 and the shell cover 10. A second mounting hole is provided between the abutting portion 112 and the outer layer 20, and the abutting portion 112 can enter or leave the second mounting hole. The abutting portion 112 and the first mounting hole abut against each other, thereby improving the sealing between the shell cover 10 and the outer layer 20, preventing a large amount of water from invading the gap between the two, and improving the waterproof effect of the battery shell.

[0039] Preferably, the inner layer 30 includes a base layer. The base layer is disposed on one side of the waterproof layer 40. A waterproof layer 32 is disposed on one side of the base layer, and a protective layer 33 is disposed on the waterproof layer 32. In this embodiment, the protective layer 33 is a foam layer. By providing the protective layer 33, the contact surface of the battery module is protected, the damage to the contact surface of the battery module is reduced, and the service life of the battery module is increased.

[0040] Preferably, a hand-held piece 12 is provided on the shell cover 10, and a hand-held groove is provided between the hand-held piece 12 and the shell cover 10. By providing the hand-held piece, it is convenient to lift and place the battery shell.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A waterproof battery housing for a battery module, characterized in that: include: A shell, the shell comprising an outer layer and an inner layer; the inner layer is arranged inside the outer layer, and a waterproof layer is formed between the inner layer and the outer layer; at least one group of grooves is arranged inside the outer layer, and the grooves are connected to the waterproof layer; A shell cover, the shell cover is arranged above the shell body; a first sealing member for sealing is arranged between the shell cover and the outer layer; Wherein, a waterproof layer is arranged inside the inner layer; the waterproof layer is located on the side of the waterproof layer away from the outer layer.

2. The waterproof battery housing for the battery module according to claim 1, characterized in that: The grooves are arranged in three groups, and the three groups of grooves are equally distributed in the outer shell, and each group of grooves is connected to the waterproof layer.

3. The waterproof battery housing for the battery module according to claim 2, characterized in that: A water absorbing layer is arranged in the groove, and the water absorbing layer is detachably connected to the groove.

4. The waterproof battery housing for the battery module according to claim 3, characterized in that: The shell is provided with sealing blocks at two ends corresponding to the groove, and the sealing blocks are detachably connected to the shell.

5. The waterproof battery housing for the battery module according to claim 4, characterized in that: The outer layer includes a side plate and a bottom plate; the bottom plate is arranged at the bottom end of the side plate and is detachably connected to the side plate; the groove is arranged on the bottom plate.

6. The waterproof battery housing for the battery module according to claim 1, characterized in that: The first sealing member includes a fixing portion and an abutting portion; the fixing portion is arranged at the bottom end of the shell cover; the abutting portion is arranged at the bottom end of the fixing portion and can abut against the outer layer.

7. The waterproof battery housing for the battery module according to claim 6, characterized in that: The fixing portion and the abutting portion are integrally formed, and an outer diameter of the fixing portion is greater than an outer diameter of the abutting portion.

8. The waterproof battery housing for the battery module according to claim 7, characterized in that: A first mounting hole is provided between the fixing portion and the shell cover; a second mounting hole is provided between the abutting portion and the outer layer, and the abutting portion can enter or leave the second mounting hole.

9. The waterproof battery housing for a battery module according to any one of claims 1 to 8, characterized in that: The inner layer comprises a base layer; the base layer is arranged on one side of the waterproof layer; the waterproof layer is arranged on one side of the base layer, and a protective layer is arranged on the waterproof layer.

10. The waterproof battery housing for a battery module according to any one of claims 1 to 8, characterized in that: A hand piece is arranged on the shell cover, and a hand slot is arranged between the hand piece and the shell cover.

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