电池单体、电池装置以及车辆
By adding protruding dimensions and chamfers to the battery cell terminal design and using fasteners for fixation, the problems of complex welding and heavy weight of battery cells were solved, achieving efficient welding and improved energy density.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING AUTOMOBILE RES GENERAL INST
- Filing Date
- 2025-05-13
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the welding between adjacent battery cells during the battery cell assembly process is complex and prone to poor welding. Furthermore, the busbars result in heavy battery devices with low energy density.
The electrode post design protrudes 5mm-10mm from the main body surface and is chamfered, allowing direct welding to adjacent battery cells. This reduces the number of busbars and uses fasteners to fix the battery cells, simplifying the welding process.
It improves the efficiency of battery cell assembly, reduces the probability of welding defects, reduces the number of parts, increases the energy density of battery devices, and reduces costs.
Smart Images
Figure CN224520134U_ABST
Abstract
Claims
1. A battery cell, characterized by, include: Ontology(11); A pole post (12) is formed on the first surface (111) of the body (11); in The pole post (12) protrudes from the first surface (111), and the protrusion dimension of the pole post (12) is 5mm-10mm.
2. The battery cell of claim 1, wherein, The orthographic projection of the pole post (12) toward the body (11) is quadrilateral, and at least the long side of the pole post (12) is chamfered.
3. The battery cell of claim 2, wherein, The chamfer angle is 30°-60°.
4. A battery device characterized by comprising: include: The battery cell according to claims 1-3, wherein a plurality of the battery cells are arranged in pairs, and the terminals (12) of each pair of battery cells are opposite to each other and welded together; The first fixing member (20) has a plurality of fixing grooves formed thereon, and the pole post (12) of each pair of battery cells is disposed in the fixing groove; The housing, the battery cell and the first fastener (20) are simultaneously assembled into the housing.
5. The battery device according to claim 4, characterized in that, The first fixing member (20) includes a fixing block (21) and fixing teeth (22) disposed on the fixing block (21), wherein the fixing groove is defined between adjacent fixing teeth (22).
6. The battery device of claim 5, wherein The width of the fixing block (21) is equal to the distance between the two first surfaces (111) of the two battery cells in each pair.
7. The battery device of claim 5, wherein The distance between adjacent fixed teeth (22) is equal to the width of the pole post (12).
8. The battery device of claim 5, wherein, The body (11) has a second surface (112) adjacent to the first surface (111), the short side of the pole post (12) is parallel to the second surface (112), and the distance between the short side of the pole post (12) and the second surface (112) is equal to the height of the fixing block (21).
9. The battery device of claim 8, wherein, The height of the fixed tooth (22) is L1, and the length of the long side of the pole post (12) is L2, and the condition 0.5≤L1 / L2≤1 is met.
10. A vehicle characterized by comprising: include: The battery device according to any one of claims 4-9.