一种电池装置以及用电设备
By employing a heat exchange component design with both rigid and flexible parts in the battery device, and utilizing gaps and barriers to reduce the thermal shock of ejected materials, the problem of heat transfer and damage during thermal runaway of individual battery cells is solved, thereby improving the reliability and energy density of the battery device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
In battery devices, the ejected material from a thermally runaway battery cell may come into contact with other battery cells and heat exchange components, leading to heat transfer and damage, and increasing the risk of thermal runaway.
The heat exchange assembly design incorporates both rigid and flexible components. The flexible component is located at the lower end, while the rigid component is located at the upper end, forming a space and a pressure relief port. A blocking part is located at the pressure relief port. The ejected material is guided and cooled through the space, while the blocking part prevents lateral sputtering, reducing the thermal impact on other battery cells and the flexible component.
It reduces the risk of thermal shock to other battery cells and flexible components from ejected materials, improves the reliability of battery devices and the overall energy density of the battery pack, and reduces the quality and production cost of heat exchange components.
Smart Images
Figure CN224519960U_ABST
Abstract
Claims
1. A battery device, characterized by, The battery device includes: Enclosure assembly; A battery cell group is disposed within the housing assembly, the battery cell group comprising at least two battery cells, and each battery cell comprising a first pressure relief mechanism; A heat exchange assembly is disposed within the housing assembly. The heat exchange assembly includes at least two heat exchange elements, at least one of which is a rigid element and at least one of which is a flexible element. The rigid component includes a plate and a blocking part. The battery cell assembly is disposed at the upper end of the plate in the direction of gravity, and the flexible component is disposed at the lower end of the plate in the direction of gravity. The plate and the bottom wall of the housing assembly are spaced apart to form a gap space. The plate has a pressure relief port communicating with the gap space. The first pressure relief mechanism faces the pressure relief port. The blocking part is disposed at the pressure relief port and connected to the lower end of the plate in the direction of gravity.
2. The battery device according to claim 1, characterized by The blocking part is connected to the bottom wall.
3. The battery device of claim 1, wherein The flexible component and the plate are stacked to define a medium flow channel, the medium flow channel is used to circulate a heat exchange medium, and the heat exchange medium is configured to exchange heat with the battery cell. Using a plane perpendicular to the direction of gravity as the projection plane, the projection of the pressure relief port is separated from the projection of the medium flow channel.
4. The battery device of claim 1, wherein The battery device includes a second pressure relief mechanism, which is disposed on the bottom wall.
5. The battery device of claim 1, wherein At least two battery cells in the battery cell group are arranged along a first direction, and at least two pressure relief ports are arranged at intervals along the first direction to form a first group. The first pressure relief mechanism of each battery cell corresponds one-to-one with each pressure relief port. The first direction is perpendicular to the direction of gravity.
6. The battery device according to claim 5, characterized in that, At least two of the battery cell groups are arranged in the second direction, and at least two of the first groups are arranged at intervals in the second direction. Each of the first groups has a blocking part at each end of its pressure relief port in the second direction. The first direction and the second direction are perpendicular to the direction of gravity.
7. The battery device of claim 1, wherein The enclosure assembly includes: A frame, wherein the frame has openings at both ends in the direction of gravity; A top cover, which is connected to the frame and closes the upper opening of the frame in the direction of gravity; A bottom protective plate, which is connected to the frame and closes the lower opening of the frame in the direction of gravity; the plate body is connected to the frame; and the bottom protective plate has the bottom wall.
8. The battery device of claim 1, wherein At least a portion of the surface of the plate facing the bottom wall is provided with a flame-retardant layer.
9. The battery device of claim 8, wherein, The flame-retardant layer is made of polytetrafluoroethylene or silicone rubber.
10. The battery device of claim 1, wherein The plate and the flexible component are thermally pressed together.
11. The battery device according to any one of claims 1 to 10, wherein The flexible component is a metal plasticized film.
12. The battery device according to any one of claims 1 to 10, wherein The rigid component is a metal structure or a ceramic fiber structure.
13. An electrical device, characterized by Includes the battery device according to any one of claims 1 to 12.