CN-224232829-U - End plate structure, battery module and battery pack

Abstract

The utility model discloses an end plate structure, a battery module and a battery pack, which belong to the technical field of batteries, wherein the end plate structure is arranged between two adjacent battery packs, the battery pack comprises two connecting plates and connecting parts, wherein the two connecting plates are arranged along the first direction at intervals, the connecting parts are arranged between the two connecting plates, each connecting plate is used for being connected with an adjacent battery pack, and the two connecting plates and the connecting parts are connected into an integrated structure. The battery module comprises at least two groups of battery packs and the end plate structure, and the connecting plate is connected with the battery packs through the hoops. The battery pack comprises a battery box body and the battery module, wherein the battery module is arranged in the battery box body, and the connecting plate and/or the connecting part are/is connected with the battery box body. Two adjacent groups of battery packs are connected together through the end plate structure, so that the stress is uniform, the two connecting plates and the connecting part are connected into an integrated structure, the structural strength is ensured, the number of parts is reduced, and the assembly efficiency is improved.

Inventors

• QIAN HAO
• ZHANG ZHENHE
• LI LIYU
• WU CHUNHUA
• JIN QUANLIANG
• YU HONGJIANG

Assignees

• 江苏正力新能电池技术股份有限公司

Dates

Publication Date

20260512

Application Date

20250530

Claims (10)

1. 1. The utility model provides an end plate structure, its characterized in that, end plate structure sets up between two adjacent group battery packs (20), including two connecting plates (11) that follow first direction interval set up and set up two connecting portion (12) between connecting plate (11), every connecting plate (11) all are used for with the neighborhood group battery pack (20) are connected, two connecting plate (11) with connecting portion (12) connect into integrated structure.
2. 2. End plate structure according to claim 1, characterized in that the side of the connecting plate (11) remote from the adjacent battery pack (20) is provided with a limiting groove (111), the limiting groove (111) penetrates through both ends of the connecting plate (11) along the second direction, and the limiting groove (111) is internally used for arranging a strap (30).
3. 3. End plate structure according to claim 2, characterized in that the limit groove (111) is a U-shaped groove, the limit groove (111) having at least four edges extending in the second direction, each edge being provided with a rounded corner (112).
4. 4. An end plate structure according to claim 3, characterized in that two of the edges of the notch of the limit groove (111) are used as first edges, two of the edges of the groove bottom of the limit groove (111) are used as second edges, and the radius R1 of the rounded corner (112) arranged at the first edge is larger than the radius R2 of the rounded corner (112) arranged at the second edge so as to guide the band (30).
5. 5. End plate structure according to claim 2, characterized in that the connection plate (11) is internally hollow and is provided with transverse stiffening ribs (131) in a position corresponding to the limit groove (111), the transverse stiffening ribs (131) being perpendicular to the groove bottom of the limit groove (111).
6. 6. End plate structure according to claim 1, characterized in that at least part of the interior of the end plate structure is hollow forming a receiving cavity, in which a reinforcing rib (13) is arranged.
7. 7. End plate structure according to any one of claims 1-6, characterized in that the connection parts (12) are arranged at the bottom of the connection plates (11), two connection plates (11) being connected with the connection parts (12) in a U-shaped structure; Or the connecting parts (12) are arranged in the middle of the connecting plates (11), and the two connecting plates (11) and the connecting parts (12) are connected into an H-shaped structure.
8. 8. A battery module comprising at least two battery packs (20) and an end plate structure according to any one of claims 1-7, said connection plates (11) being connected to said battery packs (20) by means of straps (30).
9. 9. The battery module according to claim 8, wherein at least two of the bands (30) are provided corresponding to each of the battery packs (20), the at least two bands (30) are disposed at intervals along a third direction, the at least two bands (30) include a steel band (31) and a plastic band (32), and an insulating layer (33) is wrapped at a position where the steel band (31) contacts the battery pack (20).
10. 10. A battery pack, characterized by comprising a battery box (100) and the battery module according to claim 9, wherein the battery module is arranged in the battery box (100), and the connecting plate (11) and/or the connecting part (12) are connected with the battery box (100).

Description

End plate structure, battery module and battery pack Technical Field The utility model relates to the technical field of batteries, in particular to an end plate structure, a battery module and a battery pack. Background The lithium ion battery has the advantages of high specific energy, multiple recycling times, long storage time and the like, and is widely applied in various fields. The current battery package includes the battery box and sets up in the inside battery module of battery box, and battery module includes a plurality of batteries and sets up in the end plate in the battery outside. For a battery module including a large number of batteries, if a single battery module is used, the length of the battery module is relatively long, resulting in relatively weak middle structural strength of the battery module, so that a plurality of batteries are generally divided into two groups of battery packs. The two groups of battery packs share one middle end plate, and the two groups of battery packs are bound and fixed through the hoops, so that the middle end plate is easy to shift in the use process. The two groups of battery packs are independently arranged, the end plates are independently arranged corresponding to each group of battery packs, the number of parts is increased, and the assembly efficiency is reduced. Disclosure of utility model The utility model aims to provide an end plate structure, a battery module and a battery pack, which are used for solving the technical problems of insufficient structural strength and low assembly efficiency in the prior art. The technical scheme adopted by the utility model is as follows: An end plate structure is arranged between two adjacent battery packs and comprises two connecting plates and connecting parts, wherein the two connecting plates are arranged along a first direction at intervals, the connecting parts are arranged between the two connecting plates, each connecting plate is used for being connected with adjacent battery packs, and the two connecting plates are connected with the connecting parts to form an integrated structure. Preferably, a limit groove is formed in one side, far away from the adjacent battery pack, of the connecting plate, the limit groove penetrates through two ends of the connecting plate along the second direction, and a strap is arranged in the limit groove. Preferably, the limit groove is a U-shaped groove, the limit groove has at least four edges extending along the second direction, and each edge is provided with a round corner. Preferably, two edges of the notch of the limit groove are used as first edges, two edges of the groove bottom of the limit groove are used as second edges, and the radius R1 of the round angle arranged at the first edge is larger than the radius R2 of the round angle arranged at the second edge so as to guide the band. Preferably, the connecting plate is hollow and provided with transverse reinforcing ribs at positions corresponding to the limiting grooves, and the transverse reinforcing ribs are perpendicular to the bottoms of the limiting grooves. Preferably, at least part of the end plate structure is hollow to form a containing cavity, and reinforcing ribs are arranged in the containing cavity. Preferably, the connecting part is arranged at the bottom of the connecting plate, two connecting plates are connected with the connecting part to form a U-shaped structure, or the connecting part is arranged at the middle part of the connecting plate, and two connecting plates are connected with the connecting part to form an H-shaped structure. A battery module comprises at least two groups of battery packs and the end plate structure, wherein the connecting plates are connected with the battery packs through hoops. Preferably, at least two hoops are arranged corresponding to each battery pack, the at least two hoops are arranged at intervals along a third direction, the at least two hoops comprise steel hoops and plastic hoops, and an insulating layer is wrapped at the contact position of the steel hoops and the battery packs. The battery pack comprises a battery box body and the battery module, wherein the battery module is arranged in the battery box body, and the connecting plate and/or the connecting part is connected with the battery box body. The utility model has the beneficial effects that: the end plate structure provided by the utility model is arranged between two adjacent battery packs, and comprises two connecting plates and a connecting part, wherein the two connecting plates are arranged at intervals along a first direction, the connecting part is arranged between the two connecting plates, each connecting plate is used for being connected with an adjacent battery pack, and the two connecting plates and the connecting part are connected into an integrated structure. Two adjacent groups of battery packs are connected together through the end plate structure, so that the stress is un