一种电池包的连接排、电池包和用电设备
By designing waist-shaped holes on the battery pack connectors, the fasteners can move adaptively when the cells expand, solving the problem of connector damage caused by cell expansion and improving the energy density and stability of the battery pack.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EVE ENERGY CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
During the operation of the battery pack, when the cell modules are heated and expand, the connectors are easily pulled or squeezed and damaged. Increasing the strength or thickness of the connectors with existing technologies will lead to increased costs and decreased energy density.
The connector uses a waist-shaped hole design, allowing the fasteners to move adaptively as the battery cell expands, preventing damage and reducing the height of the fasteners to save space.
It improves the durability of the connectors when the cells expand, reduces the fastener height, and increases the energy density and connection stability of the battery pack.
Smart Images
Figure CN224520118U_ABST
Abstract
Claims
1. A connection strip of a battery pack, characterized in that, include: The first connecting part is used to electrically connect with the output electrode of the battery cell; and, A bent portion, wherein one end of the bent portion is connected to the first connecting portion along a first direction, the first direction being the thickness direction of the first connecting portion; and, The second connecting part is bent and connected to the other end of the bent part along the first direction, so that the second connecting part and the first connecting part are misaligned in the first direction. The second connecting part is provided with a waist-shaped hole for external fasteners to pass through to install and fix the second connecting part.
2. The connection strip according to claim 1, characterized in that One end of the second connecting portion along the second direction is connected to the bending portion, the second direction intersects with the first direction, and the waist-shaped hole extends along the second direction.
3. The connection strip according to claim 2, characterized in that The first connecting portion and the second connecting portion are located on different sides of the bent portion along the second direction.
4. The connection strip according to claim 1, characterized in that The first connecting portion has a first surface and a second surface disposed opposite to each other along the first direction. The first surface is the side surface of the first connecting portion facing the battery cell, and the bent portion is connected to the side where the first surface of the first connecting portion is located. The second connecting portion includes a third surface, which faces the same direction as the second surface. The third surface and the bending portion form a recessed space, which is located on the outer periphery of the first connecting portion and is used for the fastener to pass through the waist-shaped hole from the recessed space.
5. The connection strip according to claim 1, characterized in that The first connecting portion and the second connecting portion are located on different sides of the bent portion along the second direction, and the second direction intersects the first direction; Wherein, the first connecting portion includes a second surface, which is the side of the first connecting portion away from the battery cell along the first direction; the second connecting portion includes a third surface, which faces the same direction as the second surface; the distance between the third surface and the second surface in the first direction is greater than or equal to 7 mm and less than or equal to 10 mm; and / or, Along the second direction, the thickness of the bent portion is greater than or equal to 2 mm and less than or equal to 5 mm.
6. The connection strip according to any one of claims 1 to 5, characterized in that The number of waist-shaped holes is at least two.
7. The connection strip according to any one of claims 1 to 5, characterized in that The first connecting part is provided with a welding position, which is used to weld and fix it to the output electrode; The first connecting part is also provided with a limiting groove, which surrounds the outer periphery of the welding position.
8. A battery pack, characterized by, include: shell; A battery cell module, wherein the battery cell module is disposed within the housing, and the battery cell module comprises a plurality of battery cells; The connecting bar as described in any one of claims 1 to 7, wherein the first connecting portion faces the battery cell along the first direction on the side surface near the bent portion and is electrically connected to the battery cell; and, A fastener that passes through the waist-shaped hole from the second connection portion along the first direction near the bend portion to secure the second connection portion to the housing.
9. The battery pack of claim 8, wherein, The battery pack also includes an output terminal, which is disposed on the housing and is used for electrical connection with an external device. The fastener passes through the output terminal and the waist-shaped hole, so that the output terminal is connected and fixed to the second connecting part to form an electrical connection.
10. The battery pack of claim 8, wherein, The cell module includes an end plate, and the battery pack also includes a mounting base. The fastener is connected and fixed to the mounting base so that the second connecting part is mounted on the mounting base, and the mounting base is detachably connected to the end plate.
11. An electrical device, characterized by Includes the battery pack as described in any one of claims 8 to 10.