Energy storage device and thermal management system thereof

By setting up a thermal management system in the energy storage device that first cools the energy storage converter and then the battery unit, the problem of low temperature regulation and cooling efficiency in high-capacity energy storage devices is solved, and efficient temperature regulation and energy utilization are achieved.

CN224355290UActive Publication Date: 2026-06-12BYD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BYD CO LTD
Filing Date
2025-05-30
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing thermal management systems for energy storage devices cannot effectively regulate the temperature of energy storage converters and battery cells, especially with low heat dissipation efficiency at high capacities, and cannot simultaneously manage the heat of other components.

⚗Method used

Design a thermal management system that uses a first heat exchanger and a second heat exchanger to cool the energy storage converter before cooling the battery cells. Combined with a drive pump and heat exchangers, the system achieves medium circulation, improves cooling efficiency, and recovers waste heat from the energy storage converter to heat the battery cells in low-temperature environments.

🎯Benefits of technology

It improves the cooling efficiency of energy storage converters and battery units, reduces system energy consumption, and enhances the applicability and operational stability of energy storage devices in low-temperature environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of energy storage device and its thermal management system, thermal management system includes temperature regulating flow path, temperature regulating flow path includes first heat exchange member and second heat exchange member, and the first heat exchange member is adapted to the energy storage converter heat exchange of the energy storage device, the second heat exchange member is adapted to the battery cell heat exchange of the energy storage device, the import of the second heat exchange member is connected at the export of the first heat exchange member. Thus, thermal management system can realize the temperature regulation of energy storage converter and battery cell, and can take into account the cooling efficiency of both.
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