电池箱体、电池包及用电设备
By designing a central beam and absorption cavity structure in the battery housing, the problem of the inability to release battery expansion force is solved, thereby achieving battery pack safety and extended lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOMI EV TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
The expansion force generated by the battery during charging and discharging cannot be effectively released and buffered, leading to safety issues such as damage to individual battery cells, deformation of the module structure, and thermal runaway.
Design a battery housing comprising a central beam and an absorption cavity. The central beam extends along a first direction and divides the housing into two receiving cavities. The absorption cavity is disposed within the central beam to absorb the expansion of the battery module. The central beam is provided with a partition wall to increase structural strength.
It effectively reduces the risk of internal structural damage to individual battery cells due to compression, extends battery life, and ensures the safety of the battery pack.
Smart Images
Figure CN224520045U_ABST
Abstract
Claims
1. A battery case characterized by comprising: include: A central beam extends along a first direction to divide the box into two receiving cavities distributed along a second direction; as well as Two absorption cavities are formed within the intermediate beam, and the two absorption cavities are separated along the second direction.
2. The battery pack of claim 1, wherein The intermediate beam has a partition wall inside, which is located between the two absorption cavities to separate them.
3. The battery pack of claim 2, wherein, The thickness of the partition wall is greater than the thickness of the side wall of the absorption cavity adjacent to the receiving cavity.
4. The battery pack of claim 3, wherein The partition wall includes a vertical wall, which is erected inside the intermediate beam.
5. The battery pack of claim 1, wherein, Grooves are formed on both sides of the intermediate beam along the second direction. The grooves are formed at the ends of the intermediate beam in the height direction for fitting and installing with the pressure strip of the battery pack.
6. The battery pack of claim 1, wherein, The absorption cavity is trapezoidal in shape, with the long side of the trapezoid adjacent to the receiving cavity.
7. The battery pack of claim 1, wherein, The area near the bottom of the intermediate beam has a bottom mounting cavity, and potting compound is placed inside the bottom mounting cavity.
8. The battery pack of claim 7, wherein, The intermediate beam has a vertical wall and two inclined walls inside. The vertical wall is erected inside the intermediate beam, and the two inclined walls are inclined and connected to the bottom end of the vertical wall to separate the bottom mounting cavity and the two absorption cavities together with the vertical wall.
9. A battery pack, characterized by, The battery housing includes any one of claims 1-8, wherein a battery module is disposed in the receiving cavity, the battery module is disposed on both sides of the intermediate beam and includes a plurality of battery cells, the larger surface of the battery cells facing the intermediate beam.
10. An electric device, characterized by Includes the battery pack according to claim 9.