Battery box and battery pack

By designing a grooved first crossbeam and a heat-insulating coating in the battery housing, the problem of slow battery preheating temperature rise is solved, enabling faster battery preheating in low-temperature environments and improving the working efficiency of the battery pack.

CN224520063UActive Publication Date: 2026-07-17ZHEJIANG LEAPENERGY TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG LEAPENERGY TECH CO LTD
Filing Date
2025-07-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing battery housing design leads to heat dissipation, resulting in slow battery preheating and an inability to quickly reach the optimal operating temperature in low-temperature environments.

Method used

A battery housing is designed, including a base plate and a first crossbeam. The first crossbeam has multiple grooves spaced apart on one side facing the base plate to reduce heat transfer, and is combined with a heat-insulating coating to retain heat around the battery module, thus shortening the preheating time.

Benefits of technology

By reducing heat transfer and dissipation, the battery housing can reach its optimal operating temperature more quickly, improving the battery's preheating efficiency in low-temperature environments.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224520063U_ABST
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Abstract

The application discloses a battery box and a battery pack, and belongs to the technical field of batteries. The battery box has a containing cavity for containing at least one battery module. The battery box comprises a bottom plate and a first cross beam. The bottom plate is used for surrounding the containing cavity. The first cross beam is located between the bottom plate and the battery module and is connected with the bottom plate. A plurality of grooves are arranged at intervals on the side of the first cross beam facing the bottom plate, and the groove openings of the grooves face the bottom plate. A plurality of grooves are also arranged on the first cross beam, thereby reducing the contact area of the first cross beam and the bottom plate and the heat transfer between the first cross beam and the bottom plate. That is, the application reduces the heat transfer between the heat-generating body and the bottom plate through the first cross beam, and further reduces the contact area between the first cross beam and the bottom plate through the plurality of grooves, so as to reduce the heat transferred to the battery box, better retain the heat around the battery module, accelerate the battery preheating process, and shorten the time to reach the optimal working temperature.
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Claims

1. A battery case characterized by comprising: The battery housing includes a receiving cavity (200) for accommodating at least one battery module, comprising: A base plate (100) is used to form the receiving cavity (200); The first crossbeam (300) is located between the base plate (100) and the battery module and is connected to the base plate (100); the first crossbeam (300) has a plurality of grooves (321) spaced apart on the side facing the base plate (100), and the openings of the grooves (321) face the base plate (100).

2. The battery pack of claim 1, wherein The first crossbeam (300) includes: The first plate (310) is spaced apart from the base plate (100); Two second plates (320) are spaced apart along a first direction (X) and are both located between the first plate (310) and the base plate (100), and are both connected to the first plate (310) and the base plate (100); the groove (321) is formed on the side of the second plate (320) near the base plate (100).

3. The battery pack of claim 2, wherein, The second plate (320) includes a plurality of spaced welding segments (322), which are connected to the base plate (100), and the groove (321) is located between two adjacent welding segments (322).

4. The battery pack of claim 2, wherein, The battery housing includes: Multiple first crossbeams (300) are spaced apart along the first direction (X); An installation panel (400) is disposed on the side of the plurality of first plates (310) opposite to the base plate (100) and is connected to the plurality of first plates (310).

5. The battery pack of claim 4, wherein, The outer edges of the mounting panel (400) are spaced apart from the side walls of the battery box.

6. The battery pack of claim 4, wherein, The battery housing also includes a plurality of second crossbeams (500), which are disposed on one side of the first crossbeam (300) in the first direction (X) and are connected to two adjacent first crossbeams (300).

7. The battery pack of claim 4, wherein, The battery housing also includes a heat insulation coating (600), which is located on the side of the mounting panel (400) away from the first plate (310) and is attached to the mounting panel (400).

8. The battery pack of claim 7, wherein, The thickness of the heat insulation coating (600) is 60μm to 100μm.

9. The battery pack of claim 8, wherein, The thermal conductivity of the heat-insulating coating (600) is less than or equal to 0.2 W / m·K.

10. A battery pack, characterized by, include: The battery housing as described in any one of claims 1 to 9; At least one battery module, the battery module being housed within the receiving cavity (200) of the battery housing.