Batteries, battery packs and vehicles

By incorporating an explosion-proof valve in the battery casing and utilizing a low-resistance intermediate terminal and symmetrical connectors, the problem of thermoelectric coupling between the explosion-proof valve and the terminal is solved, thereby improving the battery's safety and stability and enhancing its overcurrent capacity.

CN224437747UActive Publication Date: 2026-06-30ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD
Filing Date
2025-07-11
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the prior art, when the explosion-proof valve is installed on the battery cover, high-temperature gas is prone to thermoelectric coupling with the terminal, which reduces battery safety.

Method used

The explosion-proof valve is placed in the housing to avoid the end pole, and the electronic transmission is carried out using the low-resistance intermediate pole, which shortens the electronic circuit length and reduces the internal resistance. The injection hole is set to avoid the end pole, which increases the space of the end pole. Symmetrical connectors and insulating parts are used to improve installation efficiency and stability.

Benefits of technology

This avoids thermoelectric coupling, reduces internal resistance, improves battery safety and reliability, and enhances battery stability and overcurrent capability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224437747U_ABST
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Abstract

This application provides a battery, a battery pack, and a vehicle. The battery includes multiple sub-cells, an explosion-proof valve, a middle cover, and an end cover. The multiple sub-cells are spaced apart along a first direction. Each sub-cell includes a housing and a cell mounted within the housing. The middle cover includes a mounting assembly and a middle terminal mounted to the mounting assembly. The mounting assembly connects to the housing of adjacent sub-cells. The middle terminal connects to the cell of adjacent sub-cells. The explosion-proof valve is disposed in the housing. The end cover is disposed at one end of the battery in the first direction, and the end cover has an end terminal connected to the cell. By disposing of the explosion-proof valve in the housing, separate from the end terminal, high-temperature gas avoids the end terminal during the depressurization process of the explosion-proof valve, preventing thermoelectric coupling and improving battery safety. Simultaneously, dividing the battery into multiple sub-cells and utilizing a low-resistance middle terminal for electron transfer reduces the battery's internal resistance and heat generation, further improving battery safety.
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