壳体及电池
By designing a sloping structure and raised shielding for the lithium-ion battery casing, the problem of laser beams entering the casing and ablating the battery cell was solved, improving the safety of the battery cell and the welding quality, and reducing production costs and complexity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BATTEROTECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-17
Smart Images
Figure CN224519977U_ABST
Abstract
Claims
1. A housing characterized by, The housing (10) includes a side wall (11) and a bottom wall (13), the side wall (11) and the bottom wall (13) forming an installation cavity (14), the upper end surface of the side wall (11) is a slope (12), the slope (12) extends downward from the outer wall surface of the side wall (11) to the inner wall surface of the side wall (11), and the outer edge of the slope (12) has a welding area.
2. The housing of claim 1, wherein The angle between the inclined plane (12) and the outer wall of the side wall (11) is α, and the value of α is in the range of 77°≤α≤83°.
3. The case according to claim 1, characterized by Along the thickness direction of the sidewall (11) where the inclined surface (12) is located, the inclined surface (12) has a first side and a second side arranged opposite to each other. The first side of the inclined surface (12) is in contact with the outer wall of the sidewall (11) where it is located, and the second side of the inclined surface (12) is in contact with the inner wall of the sidewall (11) where it is located.
4. The housing of claim 3, wherein, Along the thickness direction of the sidewall (11) where the inclined plane (12) is located, the distance between the first side edge (121) of the first side of the inclined plane (12) and the second side edge (122) of the second side of the inclined plane (12) is L1. In the vertical direction, the distance between the first side edge (121) and the second side edge (122) is L2. The value range of L1 is 0.6mm≤L1≤0.8mm, and the value range of L2 is 0.2mm≤L2≤0.4mm.
5. The case according to claim 3, characterized in that, The second side of the inclined surface (12) is provided with a first protrusion (111). The extension direction of the first protrusion (111) is the same as the extension direction of the second side edge (122) of the second side of the inclined surface (12). Along the height direction of the side wall (11), the end of the first protrusion (111) away from the bottom wall (13) protrudes beyond the second side edge (122) by a predetermined length L3.
6. The housing of claim 5, wherein, The preset length L3 has a value range of 0.05mm≤L3≤0.1mm.
7. The case according to claim 3, characterized by The inner wall surface of the sidewall (11) is provided with a second protrusion (112). The second protrusion (112) extends along the thickness direction of the sidewall (11) where it is located. The second protrusion (112) is located below the inclined surface (12). Along the height direction of the sidewall (11), the second protrusion (112) and the second side edge (122) of the second side of the inclined surface (12) have a preset distance L4.
8. The case according to claim 7, characterized in that The preset distance L4 has a value range of 0.05mm≤L4≤0.5mm.
9. The case according to claim 1 or 2, characterized by Along the thickness direction of the sidewall (11) where the inclined surface (12) is located, the inclined surface (12) has a first side and a second side arranged opposite to each other, and the second side of the inclined surface (12) is provided with a wave-shaped structure or a sawtooth structure.
10. A battery, characterized by include: Battery cell (20); Top cover; The housing (10) as described in any one of claims 1 to 9, wherein the battery cell (20) is installed within the mounting cavity (14).