CN-224204252-U - Battery pack

CN224204252UCN 224204252 UCN224204252 UCN 224204252UCN-224204252-U

Abstract

The application provides a battery pack, which comprises a box body, a battery pack module, a plurality of battery cell stacking bodies, a plurality of connecting beams and two side plate groups, wherein the box body comprises a plurality of side box plates, the plurality of side box plates surround to form an accommodating space, the battery pack module is arranged in the accommodating space, the battery pack module comprises a plurality of battery cell stacking bodies, a plurality of connecting beams and the two side plate groups, the battery cell stacking bodies are arranged along a first direction, each battery cell stacking body comprises a plurality of battery cells arranged along a second direction, connecting beams are arranged at two ends of each battery cell stacking body, distributed along the first direction, the two side plate groups are positioned at two sides of the battery cell stacking body, distributed along the second direction, the two side plate groups are connected through the connecting beams and clamp the battery cell stacking body, and the distance between the two side plate groups along the second direction is adjustable, so that the two side plate groups can be respectively matched with the corresponding side box plates to limit. In the battery pack provided by the application, the side plate group and the side box plate are matched and limited, so that the material cost of the battery pack is reduced, and the assembly process of the battery pack is simplified.

Inventors

YANG WENBING
FU FANGKAI
HE YAFEI

Assignees

远景动力技术(河北)有限公司
远景动力技术(江苏)有限公司
远景睿泰动力技术(上海)有限公司

Dates

Publication Date: 20260505
Application Date: 20250516

Claims (11)

1. A battery pack, comprising: the box body comprises a plurality of side box plates, and a plurality of side box plates are surrounded to form an accommodating space; The battery cell module is arranged in the accommodating space and comprises a plurality of battery cell stacks, a plurality of connecting beams and two side plate groups, wherein the battery cell stacks are arranged along a first direction, each battery cell stack comprises a plurality of battery cells which are arranged along a second direction in a stacking manner, the connecting beams are arranged at two ends of each battery cell stack which are distributed along the first direction, the two side plate groups are positioned at two sides of each battery cell stack which are distributed along the second direction, and the two side plate groups are connected through the connecting beams and clamp the battery cell stacks; And the distance between the two side plate groups along the second direction is adjustable, so that the two side plate groups can be respectively matched with the corresponding side box plates to limit.
2. The battery pack of claim 1, wherein at least one of the sets of side plates is movable relative to the connecting beam in the second direction.
3. The battery pack according to claim 2, wherein the movable side plate group is defined as a first side plate group, the first side plate group is slidably connected to the end of the corresponding connection beam, and a first elastic member is connected between the first side plate group and the end of the corresponding connection beam.
4. The battery pack of claim 3, wherein the cell stack module includes a beam adjustment fastener that extends through the first side plate stack, and wherein one end of the beam adjustment fastener is connected to an end of the connecting beam, and the other end of the beam adjustment fastener is capable of abutting a surface of the first side plate stack that is remote from the connecting beam, and wherein the first elastic member is sleeved on the beam adjustment fastener.
5. The battery pack according to claim 3 or 4, wherein a side wall of the first side plate group near the connection beam is formed with a guide groove, and an end portion of the connection beam is insertable into the guide groove.
6. The battery pack according to claim 1, wherein one of the side case plates and the corresponding side plate group is provided with a positioning groove, and the other is provided with a positioning protrusion, and the positioning protrusion is clamped and limited with the positioning groove.
7. The battery pack according to claim 6, wherein the positioning groove is provided on a surface of the side plate group near the side case plate and extends from one end to the other end of the side plate group in the first direction, and the positioning protrusion is provided on a surface of the side case plate near the side plate group and extends from one end to the other end of the side case plate in the first direction.
8. The battery pack of claim 6, wherein a height direction of the cell stack module is defined as a third direction; A first chamfer is formed between the groove wall and the groove bottom of the positioning groove which are arranged along the third direction, and/or, The edge of the positioning protrusion, which is arranged along the third direction and is close to the positioning groove, is provided with a second chamfer.
9. The battery pack according to claim 1, wherein a surface of the side plate group near the cell stack is connected with an elastic member that is stretchable in the second direction and abuts against an end surface of the cell stack.
10. The battery pack of claim 1, wherein the cell stack module further comprises a battery management system comprising a plurality of slave control boards mounted to the side plate stack and electrically connected to the corresponding cell stacks.
11. The battery pack of claim 1, wherein the cells comprise soft pack cells.

Description

Battery pack Technical Field The application relates to the technical field of power batteries, in particular to a battery pack. Background A plurality of battery modules can be arranged in the battery pack (pack), each battery module comprises at least one battery cell stacking body, and each battery cell stacking body comprises a plurality of battery cells which are stacked. In order to enable the battery module to be mounted at a preset position in the case of the battery pack, the battery module may be locked and fastened in the case by a fastener such as a bolt. In order to ensure reliable connection between the battery module and the case, a plurality of bolts are required to be provided to lock the battery module together. However, when the number of bolts is large, the assembly process of the battery pack is complicated. Meanwhile, after the battery pack is carried or used for a long time, abnormality such as loosening of bolts and the like may occur, and the connection reliability between the battery module and the box body is at risk. Disclosure of utility model Accordingly, the present application is directed to a battery pack, which at least partially solves the problem of complex connection process between the battery module and the case of the battery pack. According to the battery pack, the battery pack comprises a box body, a battery pack module and a plurality of side box plates, wherein the box body comprises a plurality of side box plates, the plurality of side box plates encircle to form an accommodating space, the battery pack module is arranged in the accommodating space and comprises a plurality of battery cell stacked bodies, a plurality of connecting beams and two side plate groups, the battery cell stacked bodies are arranged along a first direction, each battery cell stacked body comprises a plurality of battery cells which are stacked along a second direction, the connecting beams are arranged at two ends of each battery cell stacked body which are distributed along the first direction, the two side plate groups are located at two sides of the battery cell stacked body which are distributed along the second direction, the two side plate groups are connected through the connecting beams and clamp the battery cell stacked body, and the distance between the two side plate groups along the second direction is adjustable so that the two side plate groups can be respectively matched with the corresponding side box plates to limit. Optionally, at least one of the sets of side plates is movable relative to the connecting beam in the second direction. Optionally, the movable side plate group is defined as a first side plate group, the first side plate group is slidably connected with the end portion of the corresponding connecting beam, and a first elastic member is connected between the first side plate group and the end portion of the corresponding connecting beam. Optionally, the electric core group module includes the roof beam and adjusts the fastener, roof beam is adjusted the fastener and is run through first curb plate group, just the roof beam adjust the fastener one end with connect the end connection of roof beam, the other end can with first curb plate group keep away from connect the surface butt of roof beam, first elastic component suit in the roof beam is adjusted the fastener. Optionally, a side wall of the first side plate set, which is close to the connecting beam, is formed with a guide groove, and an end portion of the connecting beam can be inserted into the guide groove. Optionally, one of the side box plates and the corresponding side plate group is provided with a positioning groove, the other one is provided with a positioning protrusion, and the positioning protrusion is clamped and limited with the positioning groove. Optionally, the positioning groove is disposed on a surface of the side plate set, which is close to the side plate set, and the positioning groove extends from one end of the side plate set to the other end along the first direction, and the positioning protrusion is disposed on a surface of the side plate set, which is close to the side plate set, and the positioning protrusion extends from one end of the side plate set to the other end along the first direction. Optionally, the height direction of the battery cell module is defined as a third direction, a first chamfer is formed between a groove wall and a groove bottom of the positioning groove, which are arranged along the third direction, and/or a second chamfer is formed on an edge of the positioning protrusion, which is arranged along the third direction and is close to the positioning groove. Optionally, a surface of the side plate set, which is close to the cell stack body, is connected with an elastic component, and the elastic component can stretch along the second direction and is abutted to an end surface of the cell stack body. Optionally, the battery module further includes a batte