Battery packs and vehicles

CN224437663UActive Publication Date: 2026-06-30XIAOMI EV TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: XIAOMI EV TECH CO LTD
Filing Date: 2025-04-23
Publication Date: 2026-06-30

AI Technical Summary

Technical Problem

The heat generated by the battery pack during charging and discharging cannot be effectively dissipated, resulting in excessively high temperatures, which affects working efficiency and may lead to thermal runaway, posing a safety hazard.

Method used

Design a battery pack that includes thermal management components and fluid input components. It introduces refrigerants with different heat exchange efficiencies through selectively connected first and second input paths. The high-efficiency refrigerant is used to perform rapid heat exchange under abnormal conditions, ensuring that the temperature of the individual battery cells returns to the normal range.

Benefits of technology

It achieves effective temperature regulation under normal conditions and rapid cooling under abnormal conditions, reducing the risk of thermal runaway and improving the working efficiency and safety of the battery pack.

✦ Generated by Eureka AI based on patent content.

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Figure CN224437663U_ABST

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Abstract

This disclosure relates to a battery pack and a vehicle. The battery pack includes a battery pack housing, at least one thermal management component, at least one battery cell, and a fluid input component. The battery cell and the thermal management component are disposed within the battery pack housing, and the interior of the thermal management component is used to contain fluid to regulate the temperature of the battery cell. The fluid input component includes a first input path and a second input path, and the inlet of the thermal management component is selectively connected to the corresponding first input path and the corresponding second input path. The first input path is used to input a first refrigerant into the thermal management component, and the second input path is used to input a second refrigerant into the thermal management component. The heat exchange efficiency of the first refrigerant is lower than that of the second refrigerant. By switching the refrigerant, this battery pack can quickly exchange heat to bring the temperature of the battery cell back to the normal range, ensuring the operating efficiency of the battery pack and reducing safety hazards.

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