一种基于C型微热管阵列顶板冷却和底板加热结合相变蓄热的动力电池热管理系统
By combining a C-type micro heat pipe array with top plate cooling and bottom plate heating, the phase change thermal storage system solves the safety hazards and heat dissipation efficiency problems of the battery pack thermal management system, achieves uniform battery temperature and rapid preheating, prevents thermal runaway, and reduces energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFENG TECH CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing battery pack thermal management systems have significant safety hazards, low heat dissipation efficiency, poor preheating efficiency, cause significant damage to batteries, and cannot prevent thermal runaway when the battery is parked.
The power battery thermal management system adopts a combination of top plate cooling and bottom plate heating with C-type micro heat pipe array and phase change heat storage. The C-type micro heat pipe array is connected to the surface of the battery cell and combined with phase change heat storage module, liquid cooling module and external air cooling module to achieve dynamic temperature regulation and rapid preheating.
It improves the heat dissipation and preheating efficiency of the battery pack, prevents thermal runaway, ensures battery temperature uniformity, reduces battery damage, and enables effective operation in the parking state, thereby reducing energy consumption.
Smart Images
Figure CN224519959U_ABST
Abstract
Claims
1. A thermal management system for power battery based on C-type micro heat pipe array top plate cooling and bottom plate heating combined with phase change heat storage, characterized in that, include: The power battery pack, power battery pack casing, phase change heat storage module, liquid cooling module, external air cooling module, and electric heating module; among which, The power battery pack includes one or more rows of battery cells, with each battery cell placed on its side. The power battery pack is located inside the power battery pack shell, and the power battery pack shell is a closed structure. The C-type micro heat pipe array is partially connected to the surface of each row of battery cells as a second evaporation section, and the phase change heat storage module is connected to the second evaporation section of the C-type micro heat pipe array. The downward-extending and bent portion of the C-type micro heat pipe array serves as the first evaporation section, which connects to the inner surface of the bottom plate of the power battery pack casing. The upward-extending and bent portion of the C-type micro heat pipe array serves as a condensation section, connecting to the inner surface of the top plate of the power battery pack casing. The liquid cooling module is connected to the outer surface of the top plate of the power battery pack casing; An external air-cooling module is connected to the outer surface of the liquid-cooling module; The electric heating module is connected to the outer surface of the bottom plate of the power battery pack casing.
2. The power battery thermal management system based on a C-type micro heat pipe array with top plate cooling and bottom plate heating combined with phase change heat storage as described in claim 1, characterized in that, The battery pack casing has an IP67 rating. The outer shell of the power battery pack has heat-conducting baffles at the first evaporation section and the condensation section of the C-type micro heat pipe array.
3. The power battery thermal management system based on a C-type micro heat pipe array with top plate cooling and bottom plate heating combined with phase change heat storage as described in claim 1, characterized in that, The battery cell is a battery or a battery module or a combination of both. The battery cells are arranged in multiple rows or stacked columns.
4. A power battery thermal management system based on a C-type micro heat pipe array with top plate cooling and bottom plate heating combined with phase change heat storage, as described in claim 1, is characterized in that... A compressible thermally conductive pad is provided between the first evaporation section and the second evaporation section of the C-type micro heat pipe array and the battery cell. A compressible thermally conductive pad is provided between the condensation section of the C-type micro heat pipe array and the upper surface of the power battery pack shell. A compressible thermally conductive pad is provided between the second evaporation section of the C-type micro heat pipe array and the outer surface of the phase change heat storage module.
5. A power battery thermal management system based on a C-type micro heat pipe array with top plate cooling and bottom plate heating combined with phase change heat storage, as described in claim 1, is characterized in that... The liquid cooling module is connected to the outer surface of the top plate of the power battery pack shell by a sealing ring or welding, and the external air cooling module is connected to the outer surface of the liquid cooling module by a sealing ring or welding. The liquid cooling module includes a refrigerant inlet and a refrigerant outlet, which are connected to the electric vehicle's refrigeration system.
6. A power battery thermal management system based on a C-type micro heat pipe array with top plate cooling and bottom plate heating combined with phase change heat storage, as described in claim 1, is characterized in that... The external air-cooled module includes a fan, a fan mounting housing, and heat dissipation fins, and is powered by the electric vehicle's own battery or power battery pack.
7. A power battery thermal management system based on a C-type micro heat pipe array with top plate cooling and bottom plate heating combined with phase change heat storage, as described in claim 1, is characterized in that... C-type micro heat pipe array is a flat heat conductor with a porous structure formed by extruding metal materials. The C-type micro heat pipe array contains multiple micro heat pipes arranged side by side, which are not interconnected and operate independently, and the hydraulic diameter of each micro heat pipe is 0.2-3.0 mm. A solid metal strip with a width of 3-10mm is provided between the independent micro heat pipes along the length of the micro heat pipe, depending on the position and size of the mounting hole and the length of the micro heat pipe array.
8. A power battery thermal management system based on a combination of top plate cooling and bottom plate heating with a C-type micro heat pipe array and phase change heat storage, as described in any one of claims 1-7, characterized in that, It also includes an automatic control system and a battery temperature detection unit. The automatic control system is connected to the battery temperature detection unit, the electric vehicle cooling system, and the fan of the external air-cooling module.