电池包以及用电设备
By arranging battery cells along a first direction in the battery pack and setting heating elements on their opposite sides, combined with thermal pads and cooling structures, the problem of slowed battery charging performance in low-temperature environments is solved, achieving rapid heating and uniform heating of the battery, and improving battery life and charging/discharging efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing battery systems experience a significant slowdown in charging performance at low temperatures, especially when the state of charge (SOC) is between 10% and 80%. The decrease in battery temperature leads to a slower charging rate, affecting user experience and battery performance.
Design a battery pack structure in which battery cells are arranged along a first direction and heating elements are provided on opposite sides of each battery cell. Combined with thermal pads and cooling structures, heating uniformity and efficiency are ensured.
It enables rapid heating of the battery in low-temperature environments, improves heating uniformity, extends the service life of individual battery cells, optimizes charge and discharge efficiency, and ensures stable operation of the battery in low-temperature environments.
Smart Images
Figure CN224519961U_ABST
Abstract
Claims
1. A battery pack, characterized by, The battery includes a housing and multiple battery cells. The housing forms a battery cavity, and the battery cells are arranged in the battery cavity along a first direction. Each battery cell includes: A first housing, the first housing having a first receiving cavity, the first receiving cavity having a first opening; An electrode assembly is disposed within the first receiving cavity; A cover assembly, the cover assembly being disposed over the first opening to close the first receiving cavity; and A heating element is disposed on the side of the first housing opposite to the electrode assembly, and the heating element and the electrode assembly are arranged along the first direction.
2. The battery pack of claim 1, wherein, The heating element includes a heating section, a temperature control section, and leads, wherein the temperature control section is connected to the heating section; One end of the lead wire is connected to the temperature control unit, and the other end is used to connect to an external circuit.
3. The battery pack of claim 2, wherein, The battery pack also includes a terminal integration board and leads, with the terminal integration board disposed on the surface of the housing; The cover plate assembly is provided with a wire hole, one end of the lead wire is connected to the temperature control unit, and the other end passes through the wire hole and is bundled on the terminal integration board.
4. The battery pack of claim 2, wherein, The first housing has a first end face and a second end face disposed opposite to each other along a second direction; the second direction intersects the first direction perpendicularly, and the second direction is the height direction of the battery cell; The cover plate assembly is disposed on the first end face, and the distance between the heating element and the first end face is less than the distance between the heating element and the second end face.
5. The battery pack of claim 1, wherein, The battery cell also includes a thermal pad, which is at least partially disposed on the side of the first housing away from the heating element.
6. The battery pack of claim 5, wherein, The first housing includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall. The first sidewall and the second sidewall are arranged opposite to each other along the first direction. The third sidewall and the fourth sidewall are arranged opposite to each other along a third direction and connected between the first sidewall and the second sidewall. The third direction, the first direction, and the second direction intersect each other. The second direction is the height direction of the battery cell. The heating element is disposed on the first sidewall, and the thermal pad covers the second sidewall, the third sidewall, the fourth sidewall, and part of the first sidewall.
7. The battery pack of claim 5, wherein, The battery cell further includes a second housing, the second housing having a second receiving cavity, one end of the second receiving cavity having a second opening; the first housing is disposed within the second receiving cavity; The cover plate assembly is disposed over the second opening to enclose the first housing within the second receiving cavity; The heating element and the thermal pad are located between the cavity wall of the second receiving cavity and the first housing.
8. The battery pack of any one of claims 1-7, wherein, The battery pack also includes a cooling structure disposed within the battery cavity; the cooling structure forms a cooling channel for coolant flow, and the individual battery cells are disposed on the cooling structure.
9. The battery pack of claim 8, wherein, The battery pack also includes a heat insulation layer, which is disposed between the cooling structure and the inner wall of the battery cavity.
10. An electric device, characterized by Includes the battery pack as described in any one of claims 1-9.