Battery module end plate structure

Abstract

The utility model belongs to a battery module end plate structure in the technical field of ship batteries. The battery module end plate structure is an aluminum profile structure and comprises an end plate body (1), a plurality of upper connecting through holes (2) are formed in the upper portion of the end plate body (1), a triangular part (3) is arranged on the outer side, close to the lower portion, of the end plate body (1), a plurality of openings (5) are formed in the triangular part side face (4) of the triangular part (3), and a connecting hole (6) is formed in the triangular part bottom face (22) of the lower portion of each opening (5). And a positioning step (7) is formed between the triangular part bottom surface (22) of the triangular part (3) and the outer side of the end plate body (1). The battery module end plate structure disclosed by the utility model is simple in structure, the mounting precision and the mounting strength of the battery module are effectively improved in the process of forming the battery module, and meanwhile, the light weight of a whole battery pack is considered.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship batteries, and more specifically, relates to a battery module end plate structure. Background Art

[0002] With the rapid development of the battery industry, the production requirements for battery packs are getting higher and higher. The battery module is the largest and most important component in the battery pack, and the strength and lightness of the module end plate are the key components that determine the strength and lightness of the entire pack. At present, the battery module end plates are widely used in stamped sheet metal parts, die-cast aluminum parts, and injection molded parts. Among them, sheet metal parts and injection molded parts have relatively poor strength, are not suitable for making larger end plates, and the accuracy is difficult to guarantee. Die-cast aluminum parts have sufficient strength, but are not lightweight enough, and the mold cost is high, and the accuracy is difficult to guarantee.

[0003] In the prior art, there is a technology named "battery module end plate and battery module" and the publication number is "CN116683107A", which provides a battery module end plate and a battery module. The battery module end plate includes: an end plate assembly, the end plate assembly includes a plurality of support parts, the plurality of support parts are located on the top of the end plate assembly, and the support parts are used to support the bus; a snap assembly, the snap assembly is detachably connected to the support part, the snap assembly has a connection position for snapping at least one bus with the support part, and the snap assembly has a separation position for separating at least one bus from the support part. By bringing the support part on the end plate assembly into contact with the bus, the snap assembly connects the support part and the bus into one, thereby achieving effective support, accurate positioning, and limiting of the bus, and fixing the bus.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a battery module end plate structure with a simple structure is provided, which can effectively improve the installation accuracy and installation strength of the battery module in the process of forming the battery module, while taking into account the lightweight of the entire battery pack.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0007] The utility model discloses a battery module end plate structure, which is an aluminum profile structure. The battery module end plate structure comprises an end plate body, a plurality of upper connecting through holes are arranged on the upper part of the end plate body, a triangular part is arranged on the outer side of the end plate body near the lower part, a plurality of openings are arranged on the triangular part side surface of the triangular part, a connecting hole is arranged on the bottom surface of the triangular part at the lower part of each opening, and a positioning step is formed between the bottom surface of the triangular part of the triangular part and the outer side of the end plate body.

[0008] A plurality of lower connecting through holes are arranged at the lower part of the end plate body.

[0009] The battery module end plate structure comprises a first battery module end plate structure and a second battery module end plate structure, and the first battery module end plate structure and the second battery module end plate structure are symmetrically arranged.

[0010] A plurality of battery cells are arranged between the inner side surface of the first battery module end plate structure and the inner side surface of the second battery module end plate structure.

[0011] The battery module end plate structure also includes a plurality of module upper screws and a plurality of module lower screws.

[0012] One end of the screw on each module of the battery module end plate structure passes through an upper connecting through hole of the first battery module end plate structure and is screwed onto a fastening nut, and the other end of the screw on each module passes through an upper connecting through hole of the second battery module end plate structure and is screwed onto a fastening nut.

[0013] One end of each module lower screw of the battery module end plate structure passes through a lower connecting through hole of the first battery module end plate structure and is screwed onto the lower fastening nut, and the other end of each module lower screw passes through a lower connecting through hole of the second battery module end plate structure and is screwed onto the lower fastening nut.

[0014] An upper limit strip is mounted on the upper screw rod of the module between the first battery module end plate structure and the second battery module end plate structure, and a lower limit strip is mounted on the lower screw rod of the module between the first battery module end plate structure and the second battery module end plate structure.

[0015] The positioning step formed between the bottom surface of the triangular part and the end plate body is clamped on the battery fixing platform, and a bottom bolt passing through a connecting hole on the bottom surface of the triangular part at the lower part of each opening is screwed and connected with a corresponding screw hole on the battery fixing platform.

[0016] A plurality of hollow channels are arranged on the end plate body, and the end plate body and the triangular part are an integrated structure.

[0017] The technical solution of the utility model is adopted, and the working principle and beneficial effects are as follows:

[0018] The battery module end plate structure described in the utility model, when the structure is set, the battery module end plate structure is an aluminum profile structure using aluminum profiles extruded according to the cross-sectional shape requirements, and the end plate body obtained thereby has a higher precision of flatness and verticality, which effectively meets the connection between the end plate and the battery cell, as well as the fixation of the end plate. The overall structure not only ensures the lightweight of the battery pack, but also improves the overall strength. When the module needs to be formed after the end plate structure is formed, two symmetrically arranged battery module end plate structures are used, and a plurality of battery cells are arranged between the two battery module end plate structures, and the upper part of the battery module end plate structure is connected by an upper screw rod passing through the upper connecting through hole, and the lower part of the battery module end plate structure is connected by a lower screw rod passing through the lower connecting through hole, thereby forming a battery module with a stable structure. When the battery module is connected, a positioning step is formed between the bottom surface of the triangular part of the battery module end plate structure and the outer side of the end plate body and is clamped with the battery fixing platform, and then connected by the bottom bolts, so as to reliably realize the connection of the battery module. The battery module end plate structure described in the utility model has a simple structure and effectively improves the installation accuracy and installation strength of the battery module during the process of forming the battery module, while taking into account the lightweight of the entire battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 This is a structural schematic diagram of the battery module end plate structure of the utility model;

[0021] Figure 2 This is a structural schematic diagram of the battery module end plate structure of the utility model;

[0022] Figure 3 This is a structural schematic diagram of the battery module end plate structure of the utility model;

[0023] The marks in the accompanying drawings are respectively: 1. end plate body; 2. upper connecting through hole; 3. triangular part; 4. side of triangular part; 5. opening; 6. connecting hole; 7. positioning step; 8. lower connecting through hole; 9. first battery module end plate structure; 10. second battery module end plate structure; 11. inner side of the first battery module end plate structure; 12. inner side of the second battery module end plate structure; 13. battery cell; 14. upper screw of module; 15. lower screw of module; 16. first upper fastening nut; 17. lower fastening nut; 18. battery fixing platform; 19. bottom bolt; 20. screw hole; 21. hollow channel; 22. bottom surface of triangular part; 23. upper limit strip; 24. lower limit strip. DETAILED DESCRIPTION

[0024] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connection relationships of the components involved, the functions and working principles of the components, etc., by referring to the accompanying drawings:

[0025] As attached Figure 1 -Attached Figure 3 As shown, the utility model is a battery module end plate structure, the battery module end plate structure is an aluminum profile structure, the battery module end plate structure includes an end plate body 1, a plurality of upper connecting through holes 2 are arranged on the upper part of the end plate body 1, a triangular portion 3 is arranged on the outer side of the end plate body 1 near the lower part, a plurality of openings 5 ​​are arranged on the triangular side 4 of the triangular portion 3, a connection hole 6 is arranged on the triangular bottom surface 22 of each opening 5, and a positioning step 7 is formed between the triangular bottom surface 22 of the triangular portion 3 and the outer side of the end plate body 1. A plurality of lower connecting through holes 8 are arranged on the lower part of the end plate body 1. The above structure proposes an improved technical solution for the deficiencies in the prior art. When the structure is set, the battery module end plate structure is an aluminum profile structure, and the aluminum profile is extruded according to the cross-sectional shape requirements. The end plate body obtained thereby has a higher precision of flatness and verticality, which effectively meets the connection between the end plate and the battery cell 13, as well as the fixation of the end plate. The overall structure improves the overall strength while ensuring the lightweight of the battery pack. When a module needs to be formed after the end plate structure is formed, two symmetrically arranged battery module end plate structures are used, and multiple battery cells 13 are arranged between the two battery module end plate structures. The upper part of the battery module end plate structure is connected by an upper screw passing through the upper connecting through hole 2, and the lower part of the battery module end plate structure is connected by a lower screw passing through the lower connecting through hole 8, thereby forming a battery module with stable structure. When the battery module is connected, a positioning step 7 is formed between the bottom surface 22 of the triangular part 3 of the battery module end plate structure and the outer side of the end plate body 1, and the positioning step 7 is clamped with the battery fixing platform 18, and then connected by the bottom bolts to reliably realize the connection of the battery module. The battery module end plate structure described in the utility model has a simple structure. In the process of forming the battery module, it effectively improves the installation accuracy and installation strength of the battery module, while taking into account the lightweight of the entire battery pack.

[0026] The battery module end plate structure includes a first battery module end plate structure 9 and a second battery module end plate structure 10, and the first battery module end plate structure 9 and the second battery module end plate structure 10 are symmetrically arranged. A plurality of battery cells 13 are arranged between the inner side surface 11 of the first battery module end plate structure 9 and the inner side surface 12 of the second battery module end plate structure 10. The above structure, when a module needs to be formed after the end plate structure is formed, adopts two symmetrically arranged battery module end plate structures, namely: the first battery module end plate structure 9 and the second battery module end plate structure 10, a plurality of battery cells 13 are arranged between the first battery module end plate structure 9 and the second battery module end plate structure 10, and the plurality of battery cells are arranged in close contact, an insulating layer is arranged between the first battery module end plate structure 9 and the adjacent battery cells, and an insulating layer is arranged between the second battery module end plate structure 10 and the adjacent battery cells.

[0027] The battery module end plate structure further includes a plurality of module upper screws 14 and a plurality of module lower screws 15. One end of each module upper screw 14 of the battery module end plate structure passes through an upper connection through hole 2 of the first battery module end plate structure 9 and is screwed with an upper fastening nut 16, and the other end of each module upper screw 14 passes through an upper connection through hole 2 of the second battery module end plate structure 10 and is screwed with an upper fastening nut 16. One end of each module lower screw 15 of the battery module end plate structure passes through a lower connection through hole 8 of the first battery module end plate structure 9 and is screwed with a lower fastening nut 17, and the other end of each module lower screw 15 passes through a lower connection through hole 8 of the second battery module end plate structure 10 and is screwed with a lower fastening nut 17. When the above structure forms a battery module, the upper parts of the first battery module end plate structure 9 and the second battery module end plate structure 10 are connected by the upper module screw 16 passing through the upper connecting through hole 2, and the lower parts of the first battery module end plate structure 9 and the second battery module end plate structure 10 are connected by the lower module screw 17 passing through the lower connecting through hole 8, thereby ensuring a reliable connection and forming a battery module with a stable structure.

[0028] The upper screw rod 14 between the first battery module end plate structure 9 and the second battery module end plate structure 10 is fitted with an upper limit bar 23, and the lower screw rod 15 between the first battery module end plate structure 9 and the second battery module end plate structure 10 is fitted with a lower limit bar 24. In the above structure, the upper limit bar 23 and the lower limit bar 24 constrain the battery module from the upper and lower positions.

[0029] The positioning step 7 formed between the triangular bottom surface 22 of the triangular portion 3 and the end plate body 1 is clamped on the battery fixing platform 18, and a bottom bolt 19 passing through the connection hole 6 on the triangular bottom surface 22 at the lower part of each opening 5 is screwed and connected with a corresponding screw hole 20 on the battery fixing platform 18. The above structure realizes the connection between the end plate and the battery fixing platform 18 through the screwing connection between the bottom bolt 19 and the screw hole 20, and realizes the reliable fixation of the entire battery module on the ship.

[0030] The end plate body 1 is provided with multiple hollow channels 21, and the end plate body 1 and the triangular portion 3 are an integrated structure. In the above structure, the entire end plate is an aluminum profile structure, which is extruded according to the cross-sectional shape requirements, and the whole is an integrated structure, and the processing technology is simple, and the holes are directly formed during the processing of the aluminum profile end plate structure, or are formed by drilling in the later stage.

[0031] The battery module end plate structure described in the utility model, when the structure is set, the battery module end plate structure is an aluminum profile structure using aluminum profiles to be extruded according to the cross-sectional shape requirements, the product is integrally formed, the processing technology is simple, the strength meets the requirements, and the end plate obtained has a higher precision of flatness and verticality, which effectively meets the connection between the end plate and the battery cell 13, as well as the fixation of the end plate. The overall structure not only ensures the lightweight of the battery pack, but also improves the overall strength. When the module needs to be formed after the end plate structure is formed, two symmetrically arranged battery module end plate structures are used, and a plurality of battery cells 13 are arranged between the two battery module end plate structures, and the upper part of the battery module end plate structure is connected by an upper screw rod passing through the upper connecting through hole 2, and the lower part of the battery module end plate structure is connected by a lower screw rod passing through the lower connecting through hole 8, thereby forming a battery module with a stable structure. When the battery module is connected, a positioning step 7 is formed between the bottom surface 22 of the triangular part 3 of the battery module end plate structure and the outer side of the end plate body 1 and the battery fixing platform 18 is clamped, and then connected by the bottom bolt, so as to reliably realize the connection of the battery module. The battery module end plate structure described in the utility model has a simple structure and effectively improves the installation accuracy and installation strength of the battery module during the process of forming the battery module, while taking into account the lightweight of the entire battery pack.

[0032] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A battery module end plate structure, characterized in that: The battery module end plate structure is an aluminum profile structure, comprising an end plate body (1), a plurality of upper connecting through holes (2) being arranged on the upper portion of the end plate body (1), a triangular portion (3) being arranged on the outer side of the end plate body (1) near the lower portion, a plurality of openings (5) being arranged on the triangular portion side surface (4) of the triangular portion (3), a connecting hole (6) being arranged on the triangular portion bottom surface (22) below each opening (5), and a positioning step (7) being formed between the triangular portion bottom surface (22) of the triangular portion (3) and the outer side of the end plate body (1).

2. The battery module end plate structure according to claim 1, characterized in that: A plurality of lower connecting through holes (8) are arranged at the lower part of the end plate body (1).

3. The battery module end plate structure according to claim 2, characterized in that: The battery module end plate structure comprises a first battery module end plate structure (9) and a second battery module end plate structure (10), and the first battery module end plate structure (9) and the second battery module end plate structure (10) are symmetrically arranged.

4. The battery module end plate structure according to claim 3, characterized in that: A plurality of battery cells (13) are arranged between an inner side surface (11) of the first battery module end plate structure (9) and an inner side surface (12) of the second battery module end plate structure (10).

5. The battery module end plate structure according to claim 3, characterized in that: The battery module end plate structure further comprises a plurality of module upper screw rods (14) and a plurality of module lower screw rods (15).

6. The battery module end plate structure according to claim 5, characterized in that: One end of the screw rod (14) on each module of the battery module end plate structure passes through an upper connection through hole (2) of the first battery module end plate structure (9) and is screwed onto a fastening nut (16), and the other end of the screw rod (14) on each module passes through an upper connection through hole (2) of the second battery module end plate structure (10) and is screwed onto a fastening nut (16).

7. The battery module end plate structure according to claim 6, characterized in that: One end of each module lower screw rod (15) of the battery module end plate structure passes through a lower connecting through hole (8) of the first battery module end plate structure (9) and is screwed onto a lower fastening nut (17), and the other end of each module lower screw rod (15) passes through a lower connecting through hole (8) of the second battery module end plate structure (10) and is screwed onto a lower fastening nut (17).

8. The battery module end plate structure according to claim 7, characterized in that: An upper limit strip (23) is sleeved on the upper screw rod (14) of the module between the first battery module end plate structure (9) and the second battery module end plate structure (10), and a lower limit strip (24) is sleeved on the lower screw rod (15) of the module between the first battery module end plate structure (9) and the second battery module end plate structure (10).

9. The battery module end plate structure according to claim 1 or 2, characterized in that: A positioning step (7) formed between the triangular bottom surface (22) of the triangular portion (3) and the end plate body (1) is clamped on the battery fixing platform (18), and a bottom bolt (19) passing through a connecting hole (6) on the triangular bottom surface (22) below each opening (5) is screwed and connected to a corresponding screw hole (20) on the battery fixing platform (18).

10. The battery module end plate structure according to claim 1 or 2, characterized in that: The end plate body (1) is provided with a plurality of hollow channels (21), and the end plate body (1) and the triangular portion (3) are an integrated structure.

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