CN-224204273-U - Fastening assembly of battery module and battery pack

CN224204273UCN 224204273 UCN224204273 UCN 224204273UCN-224204273-U

Abstract

The utility model relates to the technical field of battery packs, and particularly discloses a fastening assembly of a battery module and a battery pack, wherein the fastening assembly comprises a bottom plate, a limiting piece, an adjusting end plate and a positioning plate, an accommodating space for accommodating the bottom end of a battery cell is formed in the bottom plate, the limiting piece is arranged in the accommodating space and divides the accommodating space into at least two battery cell accommodating grooves, the adjusting end plates are arranged on two ends of the bottom plate along a second direction, the two adjusting end plates can move towards one side close to each other along the first direction so as to compress a plurality of battery cells positioned in the battery cell accommodating grooves from the first direction, the end parts of the two positioning plates can be buckled with the end parts of the two adjusting end plates to form an annular clamping structure for clamping the battery cells, the space utilization rate in a shell can be effectively improved, the battery cells are extruded through the two adjusting end plates, the gap between the battery cells can be reduced, the whole energy density of the battery pack can be improved, and the whole assembly efficiency can be improved.

Inventors

TANG QILIN
LIU LUXIN
PAN JIANPING
LIU WEI

Assignees

宁波德业储能科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250403

Claims (10)

1. A fastening assembly of a battery module, comprising: The bottom plate is provided with an accommodating space for accommodating the bottom end of the battery cell; The limiting piece is arranged on the bottom plate along a first direction and divides the accommodating space into at least two battery cell accommodating grooves, and the battery cells in each battery cell accommodating groove are stacked along the first direction; adjusting end plates arranged on both ends of the bottom plate in a second direction, the second direction being perpendicular to the first direction, both of the adjusting end plates being movable toward one side close to each other in the first direction to press the battery cells located in the battery cell receiving grooves; The positioning plates are arranged on two sides of the bottom plate along the first direction and can be abutted against the side edges of the battery cells, and the end parts of the two positioning plates can be buckled with the end parts of the two adjusting end plates to form an annular clamping structure for clamping the battery cells.
2. The fastening assembly of claim 1, wherein connecting plates are arranged on two sides of two ends of the adjusting end plate, first positioning holes are arranged on two ends of the positioning plate, and the connecting plates can be inserted into the first positioning holes and are attached to the inner walls of the first positioning holes.
3. The fastening assembly of a battery module according to claim 1, wherein the bottom plate comprises a bottom plate body, side plates and cross beams, the two side plates are arranged on both sides of the bottom plate body in a first direction, the two cross beams are arranged on both ends of the bottom plate body in a second direction, and the two side plates, the two cross beams and the bottom plate body surround to form the accommodation space.
4. The fastening assembly of a battery module according to claim 3, wherein the cross beam is provided with a positioning block, the bottom of the adjusting end plate is provided with a second positioning hole, when the positioning block stretches into the second positioning hole, the adjusting end plate compresses the battery cell in the battery cell accommodating groove, and the inner side of the adjusting end plate can be abutted with the end part of the limiting piece.
5. A fastening assembly of a battery module according to claim 3, wherein two limiting members are disposed in each of the accommodating spaces, and the two limiting members are adapted to cooperate with two side plates to equally divide the accommodating spaces into three battery cell accommodating grooves.
6. The fastening assembly of a battery module according to claim 5, wherein the stopper is provided as a steel pipe which is disposed on the floor main body in the first direction and perpendicular to the cross member.
7. The fastening assembly of a battery module according to claim 6, wherein the steel pipe is flat, the steel pipe has a first side wall and a second side wall, and the first side wall and the second side wall can respectively abut against ends of two groups of the battery cells.
8. The fastening assembly of claim 7, wherein a heat dissipation channel is provided between the first side wall and the second side wall.
9. The fastening assembly of a battery module according to claim 1, wherein the adjusting end plate is provided with reinforcing ribs, and a plurality of the reinforcing ribs are arranged in a cross-like manner on the outer side of the adjusting end plate.
10. A battery pack, comprising: a housing; The fastening assembly according to any one of claims 1 to 9, at least two of the fastening assemblies are arranged in the housing in a vertical direction, the top and bottom of the positioning plate are provided with supporting parts, and the supporting parts of the two positioning plates arranged in an up-down direction are abutted against each other; and the battery modules are respectively fixed in the shell through two fastening components.

Description

Fastening assembly of battery module and battery pack Technical Field The utility model relates to the technical field of battery module positioning, in particular to a fastening assembly of a battery module and a battery pack. Background Along with the rapid development of new energy technology, portable energy storage equipment such as a battery pack and the like is widely applied to the fields of automobiles and the like, particularly to electric automobiles, but the electric automobiles have the biggest problem that the continuous mileage of the electric automobiles cannot meet the requirements of users, enterprises all need to want to improve the continuous mileage of the electric automobiles, and currently, two methods for improving the continuous mileage of the electric automobiles exist together, namely, 1, increasing the volume of the battery pack to improve the holding quantity of battery cores so as to further improve the electric quantity of the battery pack, and 2, improving the energy density of the battery pack so as to further improve the electric quantity. However, in the prior art, the electric vehicle is limited in installation space for the battery pack, which results in that the power increase cannot be achieved by increasing the volume of the battery pack, and thus the power increase can be achieved only by increasing the energy density of the battery pack, in the prior art, the battery pack includes a case and a battery module, after a plurality of battery cells are assembled into a battery module in the outer side, the battery module is placed into the shell and positioned through the steel belt, but the battery module can only be installed in a preset area of the shell due to the positioning of the steel belt, so that the space utilization rate in the shell is low, the improvement of the energy density of a battery pack is limited, and the distribution efficiency of the battery pack is low. Disclosure of Invention The present utility model has been made in view of the above problems, and an object of the present utility model is to provide a fastening assembly of a battery module and a battery pack, which can improve the energy density of the battery module by pressing, and which has high assembly efficiency. In order to achieve the above object, the present utility model provides a fastening assembly of a battery module, comprising: The bottom plate is provided with an accommodating space for accommodating the bottom end of the battery cell; The limiting piece is arranged on the bottom plate along a first direction and divides the accommodating space into at least two battery cell accommodating grooves, and the battery cells in each battery cell accommodating groove are stacked along the first direction; adjusting end plates arranged on both ends of the bottom plate in a second direction, the second direction being perpendicular to the first direction, both of the adjusting end plates being movable toward one side close to each other in the first direction to press the battery cells located in the battery cell receiving grooves; The positioning plates are arranged on two sides of the bottom plate along the first direction and can be abutted against the side edges of the battery cells, and the end parts of the two positioning plates can be buckled with the end parts of the two adjusting end plates to form an annular clamping structure for clamping the battery cells. According to the fastening assembly of the battery module, connecting plates are arranged on two sides of two ends of the adjusting end plate, first positioning holes are formed in two ends of the positioning plate, and the connecting plates can be inserted into the first positioning holes and are attached to the inner walls of the first positioning holes. According to the above-mentioned fastening assembly of battery module, the bottom plate includes bottom plate main part, curb plate and crossbeam, two the curb plate is followed the first direction and is arranged the both sides of bottom plate main part, two the crossbeam is followed the second direction and is arranged the both ends of bottom plate main part, two the curb plate, two the crossbeam and the bottom plate main part surrounds and forms accommodation space. According to the fastening assembly of the battery module, the positioning block is arranged on the cross beam, the second positioning hole is formed in the bottom of the adjusting end plate, when the positioning block stretches into the second positioning hole, the adjusting end plate compresses the battery cell positioned in the battery cell accommodating groove, and the inner side of the adjusting end plate can be in butt joint with the end part of the limiting piece. According to the fastening assembly of the battery module, two limiting pieces are arranged in each accommodating space, and the two limiting pieces can be matched with the two side plates to equally divide the accommodating space into t