Energy storage device and photovoltaic energy storage system

By adopting a liquid-cooled cooling system controlled by multi-way valves in energy storage equipment, the problem of low efficiency of traditional air-cooled cooling systems is solved, efficient temperature regulation of batteries and power modules is achieved, and the reliability and safety of the equipment are improved.

WO2025066196A1 Publication Date: 2025-04-03HUAWEI DIGITAL POWER TECH CO LTD
5 Cites 2 Cited by

Patent Information

Application Number
PCT/CN2024/094510
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-28
Filing Date
2024-05-21
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Among the existing energy storage equipment, the traditional air-cooled cooling system is inefficient and cannot meet the heat dissipation needs of power modules during overload operation, affecting the reliability and safety of the equipment.

Method used

A liquid-cooled heat dissipation system controlled by multi-way valve is adopted. The cooling liquid interface and circulation path are turned on or off by multi-way valves to realize the series or parallel connection of the battery heat exchange plate, power circuit heat exchange plate and the evaporator, thereby improving the heat dissipation efficiency.

Benefits of technology

It effectively improves the temperature regulation efficiency of batteries and power modules, improves the operating reliability and safety of energy storage equipment, and meets the heat dissipation needs under overload conditions.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present application provides an energy storage device and a photovoltaic energy storage system. The energy storage device comprises a thermal management module, a battery module, a first power unit, a second power unit, and a radiator module. The thermal management module comprises a shell, and a multi-way valve, a first evaporator and a condenser which are arranged in the shell, and the shell comprises a plurality of first interfaces. Two coolant liquid ports of the first evaporator are connected to the multi-way valve, and two coolant liquid ports of the condenser are connected between the multi-way valve and one first interface. The battery module comprises a battery heat exchange plate, the first power unit comprises a first power circuit heat exchange plate, the second power unit comprises a second power circuit heat exchange plate, and the radiator module comprises a radiator. The battery heat exchange plate, the first power circuit heat exchange plate, the second power circuit heat exchange plate, and the radiator are connected to the multi-way valve respectively by means of the corresponding first interfaces. By using the energy storage device, the temperatures of a battery and two power circuit heat exchange plates can be efficiently regulated and controlled.
Need to check novelty before this filing date? Find Prior Art