Battery box

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery box. The battery box comprises a battery module, an upper box cover and a lower box body, the battery module comprises a battery cell and two groups of mounting plates oppositely arranged on the two sides of the battery cell, and positioning through holes and limiting grooves are formed in the mounting plates; a positioning piece and a limiting piece are arranged on the lower box body, the positioning piece is inserted into the positioning through hole, the limiting piece is arranged in the limiting groove, and the upper box cover covers the lower box body so as to fix the battery module between the upper box cover and the lower box body. The limiting piece and the positioning piece are arranged on the lower box body, the mounting plates are arranged on the two sides of the battery cell, and when the battery module is placed into the lower box body, the positioning piece penetrates into the positioning through hole, so that the accurate mounting position of the battery module is ensured; according to the battery box, the limiting groove is matched with the limiting piece in the battery box to limit the battery module, and then the upper box cover covers the lower box body, so that the battery module is quickly positioned and assembled and fixed in the battery box, the positioning and assembling process is effectively simplified, and the assembling efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box. Background Art

[0002] As a source of power, power batteries mostly refer to storage batteries that provide power for electric vehicles, electric trains, etc. The battery cell is the smallest unit of the power battery. When multiple battery cells are packaged together by the outer shell frame to form a battery module, the battery module connects the battery cells in series or in parallel, increasing the voltage and energy storage capacity to meet different power supply requirements. After the battery cells are assembled into modules, the battery module needs to be placed in the battery box. The outer shell of the battery box can provide physical support and isolation to protect the battery from damage from the external environment.

[0003] In the prior art, in order to fix the battery module in the battery box, fixing holes are usually reserved on the side panels of the battery module. After the battery module is placed in the box, screws are inserted into the fixing holes to fix the battery module on the battery box, thereby ensuring the stability of the battery module after assembly. Each battery module needs to be manually screwed in with multiple screws for fixing, which has low assembly efficiency and is difficult to ensure the accurate installation position of the battery module.

[0004] That is, the existing battery module is assembled by manually screwing in screws, which has the disadvantages of low assembly efficiency and difficulty in ensuring the accurate installation position of the battery module. Utility Model Content

[0005] The utility model aims to provide a battery box to solve the problem that the existing battery module is assembled by manually screwing in screws, which has low assembly efficiency and is difficult to ensure the accurate installation position of the battery module.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a battery box, which includes:

[0008] A battery module, the battery module comprising a battery cell and two sets of mounting plates arranged opposite to each other on both sides of the battery cell, wherein the mounting plates are provided with positioning through holes and limiting grooves;

[0009] A lower box body, wherein a positioning member and a limiting member are provided on the lower box body, wherein the positioning member is inserted into the positioning through hole, and the limiting member is arranged in the limiting groove;

[0010] An upper box cover is disposed on the lower box body to fix the battery module between the upper box cover and the lower box body.

[0011] As an optional technical solution for a battery box, the positioning member includes an upper positioning member and a lower positioning member, the limiting member includes an upper positioning member and a lower limiting member, the lower positioning member and the lower limiting member are arranged on the lower box body, and the upper positioning member and the upper positioning member are arranged on the upper box cover.

[0012] As an optional technical solution for a battery box, the lower positioning member and the lower limiting member are an integral structure with the lower box body, and the upper positioning member and the upper limiting member are an integral structure with the upper box cover.

[0013] As an optional technical solution for a battery box, the mounting plate includes:

[0014] A support portion extending along a first direction and attached to a side surface of the battery cell;

[0015] The mounting portion is connected to the supporting portion and extends along the second direction. The positioning through hole and the limiting groove are both arranged on the mounting portion.

[0016] As an optional technical solution for a battery box, two mounting parts are relatively arranged, and the centers of the positioning through holes on the same mounting part are located on the same straight line.

[0017] As an optional technical solution for a battery box, the positioning member and the limiting member are both cylindrical pins.

[0018] As an optional technical solution for a battery box, the outer diameter of the positioning member is smaller than the outer diameter of the limiting member.

[0019] As an optional technical solution for a battery box, the mounting plate is recessed inwardly toward an edge of a side away from the battery cell to form the limiting groove.

[0020] As an optional technical solution for a battery box, the inner wall of the limiting groove is an arc surface.

[0021] As an optional technical solution for a battery box, the positioning through hole is arranged near the end of the mounting plate, and the limiting groove is arranged near the middle of the mounting plate.

[0022] Beneficial effects:

[0023] The utility model provides a battery box, which comprises a battery module, an upper box cover and a lower box body, wherein the battery module comprises a battery cell and two groups of mounting plates which are relatively arranged on both sides of the battery cell, wherein a positioning through hole and a limiting groove are arranged on the mounting plate; a positioning piece and a limiting piece are arranged on the lower box body, wherein the positioning piece is inserted into the positioning through hole, and the limiting piece is arranged in the limiting groove, and the upper box cover is arranged on the lower box body to fix the battery module between the upper box cover and the lower box body. By arranging limiting members and positioning members on the lower box body, and arranging mounting plates with positioning through holes and limiting grooves on both sides of the battery cells, when the battery module is placed in the lower box body, the positioning members are inserted into the positioning through holes, thereby ensuring that the battery module is accurately installed; the limiting members are arranged in the limiting grooves, and the limiting grooves cooperate with the limiting members in the battery box to limit the battery module, and then the upper box cover is arranged on the lower box body, thereby fixing the battery module inside the battery box, ensuring the installation stability of the battery module during production and transportation; the positioning and limiting members are used to quickly complete the positioning and assembly of the battery module in the battery box, replacing the traditional screw fixing method, effectively simplifying the positioning and assembly process, and greatly improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a partial structural schematic diagram of a battery box provided by an embodiment of the utility model;

[0025] Figure 2 is a partial cross-sectional view of a battery box provided by an embodiment of the utility model;

[0026] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0027] Figure 4 It is a structural schematic diagram of a battery module provided by an embodiment of the utility model;

[0028] Figure 5 It is a structural schematic diagram of a mounting plate provided in an embodiment of the utility model.

[0029] In the figure:

[0030] 10. Battery module; 11. Battery cell; 12. Mounting plate; 12a. Lower mounting portion; 12b. Upper mounting portion; 12c. Support portion;

[0031] 121, positioning through hole; 121a, lower positioning through hole; 121b, upper positioning through hole;

[0032] 122, limit slot; 122a, lower limit slot; 122b, upper limit slot;

[0033] 20. Battery box; 21. Lower box body; 22. Positioning piece; 23. Limiting piece. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figures 1 to 5 As shown, the utility model provides a battery box 20, which includes a battery module 10, a lower box body 21 and an upper box cover. The battery module 10 includes a battery cell 11 and a mounting plate 12. The mounting plate 12 is provided with two groups, and the two groups of mounting plates 12 are relatively arranged on both sides of the battery cell 11; the mounting plate 12 is provided with a positioning through hole 121 and a limiting groove 122; the lower box body 21 is provided with a positioning member 22 and a limiting member 23, the positioning member 22 is inserted into the positioning through hole 121, and the limiting member 23 is arranged in the limiting groove 122; the upper box cover is provided on the lower box body 21 to fix the battery module 10 between the upper box cover and the lower box body 21.

[0039] By arranging a limiting member 23 and a positioning member 22 on the lower box body 21, and arranging a mounting plate 12 with a positioning through hole 121 and a limiting groove 122 on both sides of the battery cell 11, when the battery module 10 is placed in the lower box body 21, the positioning member 22 is inserted into the positioning through hole 121, thereby ensuring that the installation position of the battery module 10 is accurate; the limiting member 23 is placed in the limiting groove 122, and the limiting groove 122 cooperates with the limiting member 23 in the battery box 20 to limit the battery module 10, and then the upper box cover is set on the lower box body 21, so as to fix the battery module 10 inside the battery box 20, ensuring the installation stability of the battery module 10 during production and transportation; the positioning member 22 and the limiting member 23 are used to quickly complete the positioning and assembly of the battery module 10 in the battery box 20, instead of the traditional screw fixing method, effectively simplifying the positioning and assembly process, and greatly improving the assembly efficiency.

[0040] In this embodiment, the lower box body 21 and the upper box cover enclose a receiving cavity of the battery box 20 , and the battery module 10 is disposed in the receiving cavity.

[0041] See also Figure 1 , Figure 2 and Figure 4 , two battery modules 10 are arranged side by side in the battery box 20 along the third direction; two sets of mounting plates 12 are respectively arranged on both sides of the battery cell 11 and the battery cell 11 is pressed and fixed by the connecting assembly. In other embodiments, a pressing plate can also be separately arranged to press and fix the battery cell 11, and then the mounting plate 12 is fixed to the side of the pressing plate away from the battery cell 11. It can be understood that the specific internal structure of the battery module 10 can be set with reference to the prior art, and will not be repeated here.

[0042] Preferably, the edge of the mounting plate 12 is recessed inwardly toward the side away from the battery cell 11 to form a limiting groove 122; the inner wall of the limiting groove 122 is an arc surface. By providing the limiting groove 122 with a recessed side, the limiting member 23 on the battery box 20 can be inserted into the limiting groove 122 from the side, and the battery module 10 can be stopped from the side, which can not only limit the installation position of the battery module 10, but also minimize the phenomenon of misalignment and extrusion of the battery module 10 during production and transportation.

[0043] In order to further ensure the installation position of the battery module 10, the positioning member 22 and the limiting member 23 are provided in two groups, upper and lower, so as to position the battery module 10 from the upper and lower positions. Specifically, the positioning member 22 includes an upper positioning member and a lower positioning member, and the limiting member 23 includes an upper positioning member and a lower limiting member, the lower positioning member and the lower limiting member are provided on the lower box body 21, and the upper positioning member and the upper limiting member are provided on the upper box cover (not shown). By providing the positioning member 22 and the limiting member 23 on both the upper box cover and the lower box body 21, the battery module 10 is quickly positioned and installed in the lower box body 21 through the lower positioning member and the lower limiting member, and the relative position of the battery module 10 and the upper box cover is limited by the upper positioning member and the upper limiting member, so that the upper box cover cooperates with the mounting plate 12 to realize the positioning of the top of the battery module 10, thereby ensuring that the battery module 10 does not tilt or shake.

[0044] In this embodiment, the lower positioning members and the lower limiting members are arranged in two rows on the lower box body 21, and the two rows are respectively located on both sides of the battery cell 11. Correspondingly, the upper positioning members and the upper limiting members are also arranged in two rows on the upper box cover.

[0045] Preferably, the lower positioning member and the lower limiting member are an integral structure with the lower box body 21, and the upper positioning member and the upper limiting member are an integral structure with the upper box cover. By arranging the positioning member 22 and the limiting member 23 as an integral structure with the box body of the battery box 20, it is not necessary to manually assemble the positioning member 22 and the limiting member 23 during installation, which simplifies the assembly process, avoids the problem of inaccurate positioning of the battery module 10 caused by manual assembly deviation, and ensures the overall quality of the battery box 20.

[0046] See also Figure 5 The mounting plate 12 includes a supporting portion 12c and a mounting portion. The supporting portion 12c extends along a first direction and is attached to the side of the battery cell 11. The mounting portion is connected to the supporting portion 12c and extends along a second direction. The positioning through hole 121 and the limiting groove 122 are both provided on the mounting portion. By attaching the supporting portion 12c to the side of the battery cell 11, the relative position of the mounting portion and the battery cell 11 is determined. By providing the positioning through hole 121 and the limiting groove 122 on the mounting portion, the positioning member 22 and the limiting member 23 of the box body are matched to ensure the accuracy of the installation position of the battery module 10.

[0047] In this embodiment, the mounting portion includes an upper mounting portion 12b and a lower mounting portion 12a that are relatively arranged; the positioning through hole 121 includes a lower positioning through hole 121a and an upper positioning through hole 121b, and the limiting groove 122 includes a lower limiting groove 122a and an upper limiting groove 122b, the lower positioning through hole 121a and the lower limiting groove 122a are both arranged on the lower mounting portion 12a, and the upper positioning through hole 121b and the upper limiting groove 122b are both arranged on the upper mounting portion 12b.

[0048] Specifically, the positioning members 22 are disposed in a one-to-one correspondence with the positioning through holes 121 , and the limiting members 23 are disposed in a one-to-one correspondence with the limiting grooves 122 .

[0049] See also Figure 2 and Figure 5 , there are multiple lower limit grooves 122a, which are arranged at intervals along the third direction; at least two lower positioning through holes 121a are arranged, which are arranged at intervals along the third direction; the centers of the lower positioning through holes 121a located on the same lower mounting portion 12a are all located on the same straight line. By arranging the lower limit grooves 122a and the lower positioning through holes 121a on the mounting plate 12, the battery module 10 is restricted from multiple positions; by arranging the centers of the lower positioning through holes 121a to be located on the same straight line, when the battery module 10 is installed in the battery box 20, the difficulty of assembling the multiple lower positioning through holes 121a and the multiple lower positioning members is reduced, which helps to improve the efficiency of assembly.

[0050] Correspondingly, a plurality of upper positioning grooves 122b are provided, and the upper positioning grooves 122b are spaced apart along the third direction; at least two upper positioning through holes 121b are provided, and the upper positioning through holes 121b are spaced apart along the third direction; the centers of the upper positioning through holes 121b located on the same upper mounting portion 12b are all located on the same straight line.

[0051] Preferably, the upper positioning through hole 121a is arranged in one-to-one correspondence with the lower positioning through hole 121a, the upper limit groove 122b is arranged in one-to-one correspondence with the lower limit groove 122a; the upper positioning member is arranged in one-to-one correspondence with the lower positioning member, and the upper limit member is arranged in one-to-one correspondence with the lower limit member. By setting the hole positions on the two mounting parts of the mounting plate 12 to be uniform, there is no need to deliberately distinguish the direction of the mounting plate 12 during assembly, which facilitates the assembly of the battery box 20.

[0052] Preferably, the positioning through hole 121 is arranged near the end of the mounting plate 12, and the limiting groove 122 is arranged near the middle of the mounting plate 12. By arranging the positioning through hole 121 at the edge of the end and arranging the limiting groove 122 in the middle, the positioning is accurate, and the limiting member 23 cooperates with the limiting groove 122 to stop the battery module 10 from the middle, which is conducive to the stability of the position of the battery module 10.

[0053] In this embodiment, two lower positioning through holes 121a are provided on one mounting plate 12, and the two lower positioning through holes 121a are respectively provided at the edge positions close to the two ends of the lower mounting portion 12a; two lower limiting grooves 122a are provided on one mounting plate 12, and the two lower limiting grooves 122a are both located between the two lower positioning through holes 121a. In other embodiments, only one lower limiting groove 122a may be provided. Preferably, the distance between the two lower limiting grooves 122a is equal to the distance between one lower limiting groove 122a and the adjacent lower positioning through hole 121a.

[0054] Correspondingly, two upper positioning through holes 121b are provided on one mounting plate 12, and the two upper positioning through holes 121b are respectively provided at the edge positions of both ends of the upper mounting portion 12b; two upper limit grooves 122b are provided on one mounting plate 12, and the two limit grooves 122b are both located between the two upper positioning through holes 121b. Preferably, the distance between the two upper limit grooves 122b is equal to the distance between one upper limit groove 122b and the adjacent upper positioning through hole 121b.

[0055] In this embodiment, the positioning member 22 and the limiting member 23 are both cylindrical pins; the outer diameter of the positioning member 22 is smaller than the outer diameter of the limiting member 23. Specifically, the upper positioning member, the lower positioning member, the upper limit member and the lower limit member are all cylindrical pins; the outer diameters of the upper positioning member and the lower positioning member are the same, and the outer diameters of the upper positioning member and the lower limit member are the same; the upper positioning through hole 121b and the lower positioning through hole 121a are both round holes, and the inner diameter of the positioning through hole 121 is larger than the outer diameter of the positioning member 22.

[0056] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery box, characterized in that: include: A battery module (10), the battery module (10) comprising a battery cell (11) and two groups of mounting plates (12) arranged oppositely on two sides of the battery cell (11), the mounting plates (12) being provided with positioning through holes (121) and limiting grooves (122); A lower box body (21), wherein a positioning member (22) and a limiting member (23) are provided on the lower box body (21), wherein the positioning member (22) is inserted into the positioning through hole (121), and the limiting member (23) is arranged in the limiting groove (122); An upper box cover is arranged on the lower box body (21) to fix the battery module (10) between the upper box cover and the lower box body (21).

2. The battery box according to claim 1, characterized in that: The positioning member (22) comprises an upper positioning member and a lower positioning member, the limiting member (23) comprises an upper positioning member and a lower limiting member, the lower positioning member and the lower limiting member are arranged on the lower box body (21), and the upper positioning member and the upper positioning member are arranged on the upper box cover.

3. The battery box according to claim 2, characterized in that: The lower positioning member and the lower limiting member are an integral structure with the lower box body (21), and the upper positioning member and the upper limiting member are an integral structure with the upper box cover.

4. The battery box according to claim 2, characterized in that: The mounting plate (12) comprises: A support portion (12c), the support portion (12c) extending along a first direction and being attached to a side surface of the battery core (11); The mounting portion is connected to the supporting portion (12c) and extends along the second direction, and the positioning through hole (121) and the limiting groove (122) are both arranged on the mounting portion.

5. The battery box according to claim 4, characterized in that: Two mounting parts are arranged opposite to each other, and the centers of the positioning through holes (121) located on the same mounting part are located on the same straight line.

6. The battery box according to claim 1, characterized in that: The positioning member (22) and the limiting member (23) are both cylindrical pins.

7. The battery box according to claim 6, characterized in that: The outer diameter of the positioning member (22) is smaller than the outer diameter of the limiting member (23).

8. The battery box according to claim 1, characterized in that: The mounting plate (12) is recessed inwardly toward an edge of a side away from the battery core (11) to form the limiting groove (122).

9. The battery box according to claim 8, characterized in that: The inner wall of the limiting groove (122) is in the form of an arc surface.

10. The battery box according to any one of claims 1 to 9, characterized in that: The positioning through hole (121) is arranged at a position close to the end of the mounting plate (12), and the limiting groove (122) is arranged at a position close to the middle of the mounting plate (12).

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