电池包及用电设备
By using heat insulation components and insulation parts in the battery pack to block heat transfer, and setting channels in the hollow beam to discharge thermal runaway gas, the problem of easy heat transfer between battery compartments is solved, improving the safety and space utilization of the battery pack.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOMI EV TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, heat can easily transfer between different battery compartments in a battery pack, leading to the spread of thermal runaway and posing a safety hazard.
The design employs a separator with a heat-insulating structure and a heat-insulating part on the shell to block heat transfer between adjacent battery compartments. Channels are set in the hollow beam to discharge thermal runaway gas. The combination of metal materials and high-temperature resistant heat-insulating materials improves strength and heat insulation effect.
It effectively reduces thermal runaway heat transfer, reduces the risk of thermal runaway propagation, improves battery pack safety and space utilization, and enhances overall strength and gas emission efficiency.
Smart Images
Figure CN224520095U_ABST
Abstract
Claims
1. A battery pack, characterized by, The battery housing includes a battery casing and multiple battery modules. The battery casing includes a housing and at least one partition disposed within the housing. The at least one separator is used to divide the cavity inside the housing into a plurality of battery compartments for accommodating battery modules, and each battery compartment is provided with the battery module. The separator is configured as a heat insulation component, and the housing includes a corresponding region arranged opposite to the separator. At least a portion of the corresponding region includes a heat insulation portion, which is used to block heat transfer between two adjacent battery compartments.
2. The battery pack of claim 1, wherein, The housing includes a top cover, the upper end of the battery module is connected to the top cover, the heat insulation portion includes at least one first heat insulation portion located on the top cover, the top cover includes at least two first corresponding portions arranged corresponding to the battery compartment, and adjacent two first corresponding portions are connected by corresponding first heat insulation portions; and / or, The housing includes a base plate, the lower end of the battery module is connected to the base plate, the heat insulation part includes at least one second heat insulation part located on the base plate, the base plate includes at least two second corresponding parts arranged corresponding to the battery compartment, and adjacent two second corresponding parts are connected by corresponding second heat insulation parts.
3. The battery pack of claim 2, wherein, The strength of the first corresponding part is greater than the strength of the first heat insulation part; and / or, The strength of the second corresponding part is greater than the strength of the second heat insulation part.
4. The battery pack of claim 2, wherein, The first corresponding part includes a metal material layer, and the first heat insulation part includes a high-temperature resistant heat insulation material layer; and / or, The second corresponding part includes a metal material layer, and the second heat insulation part includes a high-temperature heat insulation material layer.
5. The battery pack of claim 1, wherein, The heat insulation part is bonded to the partition member by an adhesive layer; and / or The heat insulation part is connected to the partition by fasteners.
6. The battery pack according to claim 5, characterized in that, The adhesive layer is a hot melt adhesive layer.
7. The battery pack of any one of claims 1-6, wherein, The separator is a one-piece molded heat insulation component.
8. The battery pack of any one of claims 1-6, wherein, The separator includes a hollow beam, and a channel is provided inside the hollow beam; The channel is used to connect the corresponding battery compartment with the external environment of the battery pack, and the hollow beam is provided with a through hole connecting the corresponding battery compartment and the channel.
9. The battery pack of claim 8, wherein, The separator includes a side panel facing the battery compartment, the side panel being configured as a honeycomb side panel including a plurality of the through holes.
10. The battery pack of claim 9, wherein, The separator also includes a main body, which includes an upper plate and a lower plate connected in an I-shape and a connecting plate connecting the upper plate and the lower plate. The separator includes two side plates, one of which is connected to one end of the upper plate and one end of the lower plate, and the other of which is connected to the other end of the upper plate and the other end of the lower plate.
11. The battery pack of claim 8, wherein, The channel is provided with guide ribs for discharging gas toward the outside of the battery pack; and / or, the inner wall of the channel is provided with a hydrophobic coating.
12. An electrical device, characterized by Includes the main body of the device and the battery pack according to any one of claims 1-11; The battery pack is used to supply power to the main body of the device.