Battery pack and electric device
By setting up heat-conducting structures and airflow channels between battery modules, and utilizing airflow for heat exchange, the problem of poor heat dissipation in the battery pack is solved, achieving a battery pack design with efficient heat dissipation and long lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EVE ENERGY CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-07-17
AI Technical Summary
The heat generated by the battery during operation cannot be effectively dissipated, resulting in uneven temperature, which affects the battery's consistency, power and safety. Furthermore, the heat dissipation effect of existing battery packs is not good.
A first heat-conducting structure and a second heat-conducting structure are set between the battery modules. Heat exchange is carried out by air flow and the heat-conducting structure, including heat-conducting fins and air channels. Combined with the gas flow holes of the housing, the heat dissipation of the battery modules is achieved.
It improves the heat dissipation of the battery pack, reduces production costs, and extends the battery pack's lifespan under high-power operating conditions.
Smart Images
Figure CN224519938U_ABST
Abstract
Claims
1. A battery pack, characterized by, include: Multiple battery modules spaced at intervals; A first heat-conducting structure is disposed between adjacent battery modules and connected to each adjacent battery module respectively. The first heat-conducting structure is used to exchange heat with the air flowing between the adjacent battery modules.
2. The battery pack of claim 1, wherein, The first heat-conducting structure includes a plurality of spaced-apart first heat-conducting fins, and a first airflow channel is formed between adjacent first heat-conducting fins.
3. The battery pack of claim 2, wherein, The first heat-conducting structure includes two heat-conducting walls arranged opposite to each other, the two heat-conducting walls being respectively connected to two adjacent battery modules, the first heat-conducting fins being disposed between the two heat-conducting walls, and the heat-conducting walls and the first heat-conducting fins forming the first airflow channel.
4. The battery pack of claim 2, wherein, The battery module includes multiple cells arranged along a first direction, multiple first heat-conducting fins arranged at intervals along the first direction, the first heat-conducting fins extending along a second direction, and the first direction intersecting the second direction.
5. The battery pack of claim 4, wherein, It also includes a second heat-conducting structure, which is disposed on the side of the battery module away from the first heat-conducting structure.
6. The battery pack of claim 5, wherein, The second heat-conducting structure includes a plurality of spaced-apart second heat-conducting fins. The battery module includes a plurality of cells arranged along a first direction. The plurality of second heat-conducting fins are spaced-apart along a second direction. The second heat-conducting fins extend along the first direction, and the first direction intersects with the second direction.
7. The battery pack of claim 5, wherein, It also includes a housing, which has gas flow holes, and the battery module, the first heat-conducting structure and the second heat-conducting structure are all located inside the housing.
8. The battery pack of claim 7, wherein, The first heat-conducting structure and the inner bottom surface of the box form a second airflow channel; And / or, the second heat-conducting structure is spaced apart from the inner sidewall of the housing.
9. The battery pack of claim 8, wherein, The ratio of the width L1 of the first heat-conducting fin in the first heat-conducting structure to the distance L2 between two adjacent first heat-conducting fins ranges from 4 to 6; and / or The ratio of the cross-sectional area S1 of the second airflow channel to the cross-sectional area S2 of the first airflow channel formed by the two adjacent first heat-conducting fins is in the range of 5-6.
10. The battery pack of claim 7, wherein, The battery module is connected to at least one of the housing, the first thermally conductive structure, and the second thermally conductive structure via thermally conductive adhesive.
11. The battery pack of claim 7, wherein, The housing is provided with a plurality of gas flow holes, which are arranged at intervals along the first direction and / or the second direction; And / or, the gas flow hole includes an elongated hole that extends along the second direction; The gas flow hole is positioned opposite to the second heat-conducting structure.
12. The battery pack of any one of claims 1-11, wherein, The battery module includes a restraint member and a plurality of battery cells arranged side by side. A portion of the first heat-conducting structure and a portion of the second heat-conducting structure respectively form an accommodating gap with the battery cells. The restraint member passes through the accommodating gap and surrounds the outer periphery of the plurality of battery cells to fix the plurality of battery cells.
13. An electrical device, characterized by Includes the battery pack as described in any one of claims 1-12.