CN219937233U - Battery box and battery module - Google Patents

Abstract

The utility model provides a battery box and a battery module. The battery box includes: the box body is provided with a first opening and comprises a first flange and a side wall, and the first flange laterally protrudes along the inner wall surface of the side wall; the first cover body is connected with the first flange and seals the first opening, and is positioned in the box body; and a first seal member located between the first cover and the first flange. The battery box of the technical scheme of the utility model can solve the problem that the occupied area of the battery box is increased due to the adoption of the waterproof structure of the existing battery box.

Description

Battery box and battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery box and a battery module.

Background

The battery case is used for accommodating the battery, and the battery case is required to have a waterproof function due to the characteristics of the battery. In the prior art known by the inventor, the battery box comprises a top cover and a box body, the top of the box body is open, a flange is outwards extended from the outer wall of the box body, the top cover is connected with the flange to seal the top of the box body, and a sealing strip is arranged between the top cover and the flange, so that the waterproof function of the battery box is realized through the structure. The protruding edge in the waterproof structure is arranged in an outward extending mode, so that the occupied area of the battery box is increased, and the occupied area of the battery module is increased.

Disclosure of Invention

The utility model mainly aims to provide a battery box and a battery module, which can solve the problem that the occupied area of the battery box is increased due to the adoption of the waterproof structure of the traditional battery box.

In order to achieve the above object, according to an aspect of the present utility model, there is provided a battery box comprising: the box body is provided with a first opening and comprises a first flange and a side wall, and the first flange laterally protrudes along the inner wall surface of the side wall; the first cover body is connected with the first flange and seals the first opening, and is positioned in the box body; and a first seal member located between the first cover and the first flange.

Further, a groove is formed in the first flange, the first sealing element is located in the groove, the first cover body comprises a compression joint section arranged at the edge, and the compression joint section is inserted into the groove and is in sealing contact with the first sealing element.

Further, the battery box further comprises a first connecting piece, a first connecting hole is formed in the first cover body, a second connecting hole is formed in the first protruding edge, the first connecting piece penetrates through the first connecting hole and the second connecting hole, and the first cover body is connected with the first protruding edge through the first connecting piece.

Further, the first connecting holes and the second connecting holes are all arranged in a plurality, the first connecting holes are uniformly distributed along the circumferential direction of the edge of the first cover body, and the second connecting holes are uniformly distributed along the circumferential direction of the first flange.

Further, the battery box further comprises a first connecting piece, a first connecting hole is formed in the first cover body, a second connecting hole is formed in the first flange, a third connecting hole is formed in the first sealing piece, the first connecting piece penetrates through the first connecting hole, the second connecting hole and the third connecting hole, the first cover body is connected with the first flange through the first connecting piece, and the first cover body is in sealing contact with the first sealing piece.

Further, the first flange is of an annular structure, and the first sealing element is of an annular structure matched with the first flange.

Further, the box body is further provided with a second opening, the box body further comprises a second flange, the second flange laterally protrudes along the inner wall surface of the side wall, the battery box further comprises a second cover body and a second sealing piece, the second cover body is connected with the second flange and seals the second opening, the second cover body is located in the box body, and the second sealing piece is located between the second cover body and the second flange.

Further, the upper surface of the side wall protrudes from or is flush with the upper surface of the first cover; and/or the lower surface of the side wall protrudes from or is flush with the lower surface of the second cover.

Further, the first seal has a viscosity.

According to another aspect of the present utility model, there is provided a battery module including a battery and the battery case described above, the battery being located in the case.

By applying the technical scheme of the utility model, the first cover body is connected with the first flange, and the first cover body and the first flange are matched with the first sealing piece to realize a waterproof structure. The first flange is arranged inside the box body, does not occupy the space outside the box body, is also positioned inside the box body after the first cover body is matched with the box body, has the same volume as the battery box before and after the box body is matched with the first cover body, and does not occupy redundant space.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structure of a battery box according to an embodiment of the present utility model;

fig. 2 is a schematic view showing the structure of a battery box except for a first cover according to an embodiment of the present utility model;

fig. 3 shows a schematic structural view of a case of the battery case of fig. 1;

fig. 4 is a partial longitudinal sectional view showing a battery box according to a first embodiment of the present utility model;

fig. 5 is a partial longitudinal sectional view showing a battery box according to a second embodiment of the present utility model;

FIG. 6 shows a partial longitudinal cross-sectional view of another version of the battery box of FIG. 5; and

fig. 7 shows a partial longitudinal sectional view of a battery box of a third embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a case; 11. a first opening; 12. a first flange; 121. a groove; 122. a second connection hole; 13. a sidewall; 14. a second opening; 15. a second flange; 20. a first cover; 21. a crimping section; 22. a first connection hole; 30. a first seal; 40. a first connector; 50. a second cover; 60. a second seal; 70. and a second connecting piece.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

Referring to fig. 1 to 4, the present utility model provides a battery box including: the box body 10 is provided with a first opening 11, the box body 10 comprises a first flange 12 and a side wall 13, and the first flange 12 protrudes laterally along the inner wall surface of the side wall 13; the first cover 20 is connected with the first flange 12 and closes the first opening 11, and the first cover 20 is positioned in the box 10; and a first seal 30, the first seal 30 being located between the first cover 20 and the first flange 12.

In this embodiment, the first flange 12 is located inside the case 10, so that the first flange 12 does not occupy the space outside the case 10; on the other hand, the first flange 12 is used for connecting the first cover 20, after the first cover 20 is connected with the first flange 12, the first cover 20 can be located inside the box 10, and the edge of the first cover 20 does not protrude out of the box 10, so that the first cover 20 does not occupy the space outside the box 10. The space occupied by the battery box in the transverse direction is unchanged before and after the box body 10 is matched with the first cover body 20.

After the first cover body 20 is matched with the box body 10, one surface of the first protruding edge 12 facing the first cover body 20 and one surface of the first cover body 20 facing the first protruding edge 12 are in sealing fit with the first sealing piece 30, namely the first sealing piece 30 is used for sealing connection between the first cover body 20 and the first protruding edge 12, the first cover body 20 and the first sealing piece 30 are matched to form a waterproof structure, so that the waterproof structure does not occupy the space outside the box body 10. The first cover 20 closes the first opening 11 so that a closed space is formed inside the case 10, and water outside the case 10 can be prevented from entering the inside of the case 10.

Specifically, the first sealing member 30 is a sealing rubber strip, has elasticity, and the first sealing member 30 is deformed under the pressure of the first cover body 20, so that a gap between the first cover body 20 and the first flange 12 is fully filled, and a sufficient waterproof effect is ensured.

Referring to fig. 1 to 4, in the first embodiment of the present utility model, the first flange 12 is provided with a groove 121, the first sealing member 30 is located in the groove 121, the first cover 20 includes a crimp section 21 disposed at the edge, and the crimp section 21 is inserted into the groove 121 and is in sealing contact with the first sealing member 30.

In this embodiment, the first seal 30 forms a first water barrier when water enters from above the tank 10: the first sealing member 30 has waterproof performance, and the water in the groove 121 cannot pass through the first sealing member 30, i.e., the first sealing member 30 can prevent the water from entering the inside of the tank 10; the groove 121 forms a second water barrier: the structure of the groove 121 makes the inside of the groove have a water storage function, and after the water level in the groove 121 is greater than the depth of the groove 121, the water can enter the inside of the box 10, namely, the groove 121 can play a role in blocking water. The two waterproof barriers act together to exert the waterproof performance of the waterproof structure to the greatest extent, so that the waterproof effect is better. The side walls 13 also form a water-tight barrier when water enters from below or from the side of the tank 10: the side wall 13 protrudes out of the groove 121, and the water level outside the side wall 13 is higher than the side wall 13 and can enter the groove 121, i.e. the side wall 13 can prevent the water outside the side wall from directly entering the groove 121. The three waterproof barriers act together.

Specifically, as shown in fig. 4, the longitudinal section of the first cover 20 is "L" shaped, and the crimp section 21 is a short arm portion. The crimp segment 21 compresses the first seal 30, ensuring that the first seal 30 has a sufficient water-proof effect.

Referring to fig. 1 to 4, in the first embodiment of the present utility model, the battery box further includes a first connecting member 40, the first cover 20 is provided with a first connecting hole 22, the first flange 12 is provided with a second connecting hole 122, the first connecting member 40 is disposed in the first connecting hole 22 and the second connecting hole 122 in a penetrating manner, and the first cover 20 is connected with the first flange 12 through the first connecting member 40.

In this embodiment, when the first cover 20 is connected to the first flange 12, the first connecting hole 22 and the second connecting hole 122 are coaxial, and the first connecting member 40 is driven to move in a direction close to the first flange 12 in the process of penetrating the first connecting hole 22 and the second connecting hole 122, after the first cover 20 contacts the first sealing member 30, the first connecting member 40 is driven to move continuously, so that the first sealing member 30 is deformed, the transverse space of the first sealing member 30 is increased, the waterproof area of the first sealing member 30 is increased, and the waterproof performance of the first sealing member 30 is improved.

Specifically, the first connecting member 40 is a bolt, the first connecting hole 22 and the second connecting hole 122 are threaded holes, and the first connecting member 40 is screwed into the first connecting hole 22 and the second connecting hole 122. By the design of the threaded connection, on the one hand, the connection of the first cover 20 with the first flange 12 is more secure; on the other hand, the first cover 20 is convenient to be disassembled and assembled with the box body 10; in yet another aspect, the first cover 20 is configured to gradually compress the first seal member 30, so that the first seal member 30 is gradually deformed, and elastic failure caused by sudden stress on the first seal member 30 is avoided.

Referring to fig. 1 to 4, in the first embodiment of the present utility model, a plurality of first connecting holes 22 and second connecting holes 122 are provided, wherein the plurality of first connecting holes 22 are uniformly distributed along the circumferential direction of the edge of the first cover 20, and the plurality of second connecting holes 122 are uniformly distributed along the circumferential direction of the first flange 12.

In this embodiment, the first connecting holes 22 are in one-to-one correspondence with the second connecting holes 122, and the first connecting members 40 are also provided in plurality, and each first connecting hole 22 and its corresponding second connecting hole 122 are matched with one first connecting member 40. Through the arrangement, the connection strength between the first cover body 20 and the first flange 12 can be increased, so that the pressure provided by the first cover body 20 to each position of the first sealing element 30 is more uniform, and the waterproof effect of each position of the first sealing element 30 is the same. Each first connector 40 is screwed with the same number of turns so that the first cover 20 is maintained on the horizontal plane.

Referring to fig. 1 to 4, in a first embodiment of the present utility model, the first flange 12 has an annular structure, and the first seal 30 has an annular structure adapted to the first flange 12.

In the present embodiment, the first flange 12 is circumferentially provided along the edge of the first opening 11, and the annular first seal member 30 can block water to the outside of the tank 10, so that each position of the edge of the first opening 11 has waterproof performance, preventing water from entering the inside of the tank 10 from any position of the first opening 11.

Specifically, the first face of the case 10 is completely opened to form a first opening 11.

Referring to fig. 1 to 4, in the first embodiment of the present utility model, the case 10 is further provided with a second opening 14, the case 10 further includes a second flange 15, the second flange 15 protrudes laterally along the inner wall surface of the sidewall 13, the battery case further includes a second cover 50 and a second sealing member 60, the second cover 50 is connected to the second flange 15 and closes the second opening 14, the second cover 50 is located in the case 10, and the second sealing member 60 is located between the second cover 50 and the second flange 15.

In this embodiment, the battery case further includes a second connector 70, the second flange 15 and the second seal 60 are connected by the second connector 70, the second connector 70 is identical to the first connector 40, the second flange 15 is identical to the first flange 12, the second seal 60 is identical to the first seal 30, and the second cover 50 is identical to the first cover 20. The second flange 15, the second sealing member 60 and the second cover 50 form a second waterproof structure, so that both sides of the case 10 have waterproof performance, the waterproof structure formed by the first flange 12, the first sealing member 30 and the first cover 20 is identical to the second waterproof structure, the two waterproof structures are symmetrical to each other, and the axis of the first connecting member 40 and the axis of the second connecting member 70 are on the same straight line, so that the stress of the first sealing member 30 and the second sealing member 60 is identical, and further the stress of the first flange 12 and the stress of the second flange 15 are balanced with each other.

Specifically, the second face of the case 10 is completely open, forming the second opening 14, and the second face of the case 10 is opposite to the first face of the case 10. The box 10 is fillet rectangle tubular structure, and the box 10 is the aluminum product and forms through panel beating technology and use extrusion die, and recess 121 also is formed on extrusion die set, and manufacturing process is simple, and the wall thickness of box 10 is thin and even for the quality of battery case is light, area is little, intensity is high, reduction in production, material and cost of labor, thereby makes the battery case can realize extensive production and processing, and output is big, production efficiency is high, and then makes the battery case have bigger market competition.

Referring to fig. 1 to 4, in the first embodiment of the present utility model, the upper surface of the sidewall 13 protrudes from the upper surface of the first cover 20 or is flush with the upper surface of the first cover 20, and the lower surface of the sidewall 13 protrudes from the lower surface of the second cover 50 or is flush with the lower surface of the second cover 50.

In this embodiment, the height difference between the upper surface of the side wall 13 and the first flange 12 is greater than or equal to the thickness of the first cover 20, the height difference between the lower surface of the side wall 13 and the second flange 15 is greater than or equal to the thickness of the second cover 50, the upper surface of the first cover 20 does not occupy the space outside the case 10, and the lower surface of the second cover 50 does not occupy the space outside the case 10, so that the space occupied by the battery case longitudinally is unchanged before and after the first cover 20 and the second cover 50 are matched with the case 10, and further the occupied area of the battery case is unchanged, that is, the first cover 20 and the second cover 50 do not occupy the redundant space outside the case 10. Compared with the prior art, the first cover 20 and the second cover 50 have smaller volume and lower manufacturing cost.

Referring to fig. 1 to 4, in the first embodiment of the present utility model, the first seal member 30 has an adhesive property.

In this embodiment, the first cover 20 and the first flange 12 are bonded to the first sealing member 30, so that on one hand, gaps between the first cover 20 and the first flange 12 and the first sealing member 30 are prevented, and further the waterproof effect of the first sealing member 30 is prevented from being affected; on the other hand, the connection strength of the first cover 20 and the first flange 12 is enhanced.

In addition, the second sealing member 60 has viscosity, and the second cover 50 and the second flange 15 are both adhered to the second sealing member 60, so that on one hand, gaps are prevented between one or both of the second cover 50 and the second flange 15 and the second sealing member 60, and further, the waterproof effect of the second sealing member 60 is prevented from being influenced; on the other hand, the connection strength of the second cover 50 and the second flange 15 is enhanced.

Example two

The difference from the first embodiment is that: neither the first flange 12 nor the second flange 15 is provided with a recess 121.

Referring to fig. 1 to 3, 5 and 6, in the second embodiment of the present utility model, the first sealing member 30 is disposed at one side of the first connection member 40, and the second sealing member 60 is disposed at one side of the second connection member 70.

In this embodiment, the surface of the first flange 12 facing the first cover 20 is a plane, and the first cover 20 compresses the first sealing member 30, so that the first sealing member 30 deforms, and the waterproof performance is achieved, so that the structures of the first flange 12 and the second flange 15 are simpler, and the manufacturing is convenient. The waterproof structure formed by the second flange 15, the second sealing member 60 and the second cover 50 is the same as the waterproof structure formed by the first flange 12, the first sealing member 30 and the first cover 20.

In one embodiment, as shown in FIG. 5, the first seal 30 is located to the left of the first connector 40 and the second seal 60 is located to the left of the second connector 70.

In another embodiment, as shown in fig. 6, the first sealing member 30 is located on the right side of the first connecting member 40, that is, the first sealing member 30 is located in the space surrounded by the first connecting member 40, the first cover 20, the first flange 12 and the side wall 13, and the second sealing member 60 is located on the right side of the second connecting member 70, that is, the second sealing member 60 is located in the space surrounded by the second connecting member 70, the second cover 50, the second flange 15 and the side wall 13.

Other aspects of the second embodiment are identical to those of the first embodiment, and will not be described here again.

Example III

The difference from embodiment 2 is that the first connector 40 passes through the first seal member 30 and the second connector 70 passes through the second seal member 60.

Referring to fig. 1 to 3 and 7, in the third embodiment of the present utility model, the battery case further includes a first connecting member 40, the first cover 20 is provided with a first connecting hole 22, the first flange 12 is provided with a second connecting hole 122, the first sealing member 30 is provided with a third connecting hole, the first connecting member 40 is disposed in the first connecting hole 22, the second connecting hole 122 and the third connecting hole in a penetrating manner, the first cover 20 and the first flange 12 are connected by the first connecting member 40, and the first cover 20 is in sealing contact with the first sealing member 30.

In this embodiment, the first cover 20 compresses the first sealing member 30, so that the first sealing member 30 deforms, and the waterproof performance is achieved, and the first connecting member 40 passes through the first sealing member 30 through the third connecting hole and then is connected with the first flange 12, so as to increase the sealing effect of the first sealing member 30 and increase the connection strength between the first cover 20 and the first flange 12. The waterproof structure formed by the second flange 15, the second sealing member 60 and the second cover 50 is the same as the waterproof structure formed by the first flange 12, the first sealing member 30 and the first cover 20.

Specifically, neither the inner wall of the first seal member 30 nor the inner wall of the second seal member 60 has tackiness, facilitating the connection of the first connection member 40 with the first seal member 30, and the connection of the second connection member 70 with the second seal member 60.

Other aspects of the third embodiment are identical to those of the second embodiment, and will not be described here again.

Referring to fig. 1 to 3, the present utility model further provides a battery module including a battery and the battery case of the first, second or third embodiments, wherein the battery is located in the case 10.

In this embodiment, the battery box of the battery module includes all technical schemes and technical effects of any one of the above three embodiments, which are not described herein again.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects: the first cover body is connected with the first flange, and the first cover body and the first flange are matched with the first sealing piece to realize a waterproof structure. The first flange is arranged inside the box body, does not occupy the space outside the box body, is also positioned inside the box body after the first cover body is matched with the box body, has the same volume as the battery box before and after the box body is matched with the first cover body, and does not occupy redundant space.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A battery box, comprising:

the box body (10) is provided with a first opening (11), the box body (10) comprises a first flange (12) and a side wall (13), and the first flange (12) laterally protrudes along the inner wall surface of the side wall (13);

the first cover body (20) is connected with the first protruding edge (12) and seals the first opening (11), and the first cover body (20) is positioned in the box body (10); and

-a first seal (30), the first seal (30) being located between the first cover (20) and the first flange (12).

2. The battery box according to claim 1, wherein the first flange (12) is provided with a groove (121), the first sealing member (30) is located in the groove (121), the first cover body (20) comprises a crimping section (21) arranged at the edge, and the crimping section (21) is inserted into the groove (121) and is in sealing contact with the first sealing member (30).

3. The battery box according to claim 1 or 2, further comprising a first connecting member (40), wherein a first connecting hole (22) is formed in the first cover body (20), a second connecting hole (122) is formed in the first flange (12), the first connecting member (40) is arranged in the first connecting hole (22) and the second connecting hole (122) in a penetrating manner, and the first cover body (20) is connected with the first flange (12) through the first connecting member (40).

4. A battery box according to claim 3, wherein the first connecting holes (22) and the second connecting holes (122) are provided in plural, the plural first connecting holes (22) are uniformly distributed along the circumferential direction of the edge of the first cover body (20), and the plural second connecting holes (122) are uniformly distributed along the circumferential direction of the first flange (12).

5. The battery box according to claim 1, further comprising a first connecting member (40), wherein a first connecting hole (22) is formed in the first cover body (20), a second connecting hole (122) is formed in the first flange (12), a third connecting hole is formed in the first sealing member (30), the first connecting member (40) is arranged in the first connecting hole (22), the second connecting hole (122) and the third connecting hole in a penetrating manner, the first cover body (20) and the first flange (12) are connected through the first connecting member (40), and the first cover body (20) is in sealing contact with the first sealing member (30).

6. The battery box according to claim 1, 2 or 4, characterized in that the first flange (12) is of annular configuration and the first seal (30) is of annular configuration adapted to the first flange (12).

7. The battery box according to claim 1, 2 or 4, wherein the box body (10) is further provided with a second opening (14), the box body (10) further comprises a second flange (15), the second flange (15) laterally protrudes along the inner wall surface of the side wall (13), the battery box further comprises a second cover body (50) and a second sealing member (60), the second cover body (50) is connected with the second flange (15) and seals the second opening (14), the second cover body (50) is located in the box body (10), and the second sealing member (60) is located between the second cover body (50) and the second flange (15).

8. The battery box according to claim 7, characterized in that the upper surface of the side wall (13) protrudes from the upper surface of the first cover (20) or is flush with the upper surface of the first cover (20); and/or the number of the groups of groups,

the lower surface of the side wall (13) protrudes from the lower surface of the second cover (50) or is flush with the lower surface of the second cover (50).

9. The battery box according to claim 1, 2 or 4, characterized in that the first seal (30) has an adhesive property.

10. A battery module comprising a battery and a battery compartment as claimed in any one of claims 1 to 9, said battery being located within said compartment (10).