Control methods, systems, equipment and media for cooling liquid-cooled automotive batteries
By adjusting the opening of the second electronic expansion valve in the liquid-cooled vehicle battery cooling system, the problem of heat exchanger icing or freezing damage was solved, ensuring the stability and safety of battery cooling and extending battery life.
CN115863845BActive Publication Date: 2026-06-30GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2022-11-11
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
When the driver suddenly turns off the air conditioning, the opening of the electronic expansion valve in the existing liquid-cooled vehicle battery cooling system decreases, which can cause the heat exchanger to freeze or be damaged, affecting the battery cooling stability and lifespan.
Method used
By adjusting the opening of the second electronic expansion valve, the amount of refrigerant flowing through the heat exchanger is increased, preventing the heat exchanger from freezing or breaking, and ensuring the stability and safety of battery cooling.
Benefits of technology
It effectively prevents heat exchangers from freezing or breaking, improves the stability and lifespan of battery cooling, and reduces safety risks.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115863845B_ABST
Abstract
This invention relates to a control method, system, device, and medium for cooling a liquid-cooled automotive battery. The control method includes the following steps: based on the vehicle interior temperature T... 车 With the set temperature T 设 Determine if the air conditioning capacity requirement is 0; based on the coolant temperature T. 冷 With the set temperature T of the coolant 冷设 The system determines whether the battery capacity requirement is zero. If both the air conditioning capacity requirement and the battery capacity requirement are not zero, the PI control logic is executed, and it continuously checks whether remote shutdown or a zero air conditioning capacity requirement occurs. If either occurs, the opening of the second electronic expansion valve is adjusted to 200-400°B. The second electronic expansion valve controls the refrigerant content flowing from the condenser to the heat exchanger. The solution provided in this application can adjust the opening of the second electronic expansion valve in a timely manner, reducing the risk of the heat exchanger freezing or even breaking, ensuring the stability of the battery during cooling, and improving the battery's lifespan.
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