Charging Pile Thermal Loop for Battery and Cable Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-power charging of electric vehicles leads to increased heat generation in charging cables and batteries, reducing efficiency and safety, necessitating effective thermal management solutions.
Innovation Solution
A thermal management system for charging piles that includes a coolant circulation loop for both the power battery and liquid cooling cable, utilizing a compressor, heat exchangers, and expansion valves to dissipate heat effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If charging power is continuously increased to achieve ultra-fast charging, then charging speed is improved, but heat generation in charging cables and batteries increases
Solution Approach 1:
The patent divides the thermal management system into separate circulation paths: one for the power battery and another for the charging cable. This segmentation allows independent temperature control for each component, enabling effective heat dissipation for both the battery and cable during ultra-fast charging without interfering with each other's thermal management.
Solution Approach 2:
The patent introduces a liquid cooling cable as an intermediary heat dissipation component. This liquid cooling cable circulates coolant to actively remove heat from the charging cable during high-power transmission, serving as a mediator between the heat-generating charging process and the environment, thereby enabling sustained ultra-fast charging.
2Reliability
If separate thermal management systems are provided for power battery and charging cable, then heat dissipation effectiveness is improved, but system complexity and cost increase
Solution Approach 1:
The patent merges the thermal management systems by using a single coolant circulation system that serves both the power battery and charging cable through separate circulation paths. The coolant tank, pump, and control system are shared resources, while the cooling channels are separately routed to different components. This combination achieves effective heat dissipation for both components without duplicating entire thermal management systems.
Solution Approach 2:
The thermal management system is designed with multi-functionality where the same coolant circulation system can simultaneously or independently cool both the power battery and the charging cable. The system can dynamically allocate coolant flow to different components based on their thermal needs, making the thermal management system universally applicable to multiple heat-generating components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the efficiency and safety of high-power charging by effectively managing heat dissipation in both the power battery and liquid cooling cable, optimizing costs and reliability through coordinated coolant circulation.
Implementation Method 1
The first refrigerant path is used to exchange heat with the first coolant path
Implementation Method 2
coolant circulates between the first coolant path and the electric vehicle, and the thermal management system can dissipate heat from a power battery of the electric vehicle
Implementation Method 3
The thermal management system includes a first compressor, a first heat exchanger, a first expansion valve
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
Embodiments of this application provide a charging device and a charging pile. The charging pile includes one or more groups of charging connectors, a thermal management system, a first liquid outlet connector, and a first liquid inlet connector. Each group of charging connectors is configured to output electric energy to an electric vehicle, the first liquid outlet connector is configured to connect to a liquid injection port of the electric vehicle, and the first liquid inlet connector is configured to connect to a liquid return port of the electric vehicle. The thermal management system forms a coolant circulation loop with the electric vehicle via the first liquid outlet connector and the first liquid inlet connector, so that the thermal management system dissipates heat from a power battery of the electric vehicle. In addition, the thermal management system may further provide coolant for a liquid cooling cable connected to each group of charging connectors, to implement heat dissipation of the liquid cooling cable by the thermal management system.