New energy vehicle thermal management methods, devices, new energy vehicles and storage media

By employing heat exchange between the refrigerant circulation loop and the battery coolant circulation loop in the thermal management system of new energy vehicles, and integrating the motor and battery coolant circulation loops using electronic expansion valves and valve connection methods, the problem of high complexity in existing systems is solved, achieving efficient and low-energy integrated thermal management.

CN117644753BActive Publication Date: 2026-06-30DONGFENG LIUZHOU MOTOR +1
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DONGFENG LIUZHOU MOTOR
Filing Date
2023-11-10
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing thermal management systems for new energy vehicles are complex in structure, with each thermal management loop being independent and functional components and pipeline connections not being fully integrated, which increases system complexity and control difficulty, occupies space and has high development costs.

Method used

By utilizing heat exchange between the refrigerant circulation loop and the battery coolant circulation loop, and controlling the refrigerant flow using an electronic expansion valve, combined with four-way valves and three-way valves to adjust valve connections, the motor coolant circulation loop and the battery coolant circulation loop are integrated, thus consolidating the functional components and piping connections of the thermal management system.

Benefits of technology

It improves the integration of the vehicle thermal management system, simplifies the structure, reduces energy consumption, and improves system efficiency and vehicle compatibility.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117644753B_ABST
    Figure CN117644753B_ABST
Patent Text Reader

Abstract

This invention discloses a thermal management method, device, new energy vehicle, and storage medium for new energy vehicles. The method includes: setting up a refrigeration device to facilitate heat exchange between the refrigerant circulation loop and the battery coolant circulation loop; then, installing an electronic expansion valve on the refrigerant circulation loop; controlling the flow rate of refrigerant into the refrigeration device by adjusting the opening of the electronic expansion valve; and cooling the battery coolant circulation loop through the refrigeration device to lower the temperature of the battery pack corresponding to the battery coolant circulation loop. This invention integrates the battery system and the motor system, thereby consolidating the functional components and piping connections of the thermal management system, improving the integration of the entire vehicle's thermal management system, and featuring simple structure, high system efficiency, low energy consumption, and high vehicle compatibility.
Need to check novelty before this filing date? Find Prior Art