Thermally Coupled Battery-Converter Layout for Shared EV Cooling
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Solution Overview
Problem
The existing power conversion devices for electric vehicles face an increase in size due to the need for separate cooling systems for battery modules and power converters, which generate different amounts of heat and require distinct temperature control.
Innovation Solution
A power conversion device incorporating an all-solid-state battery, a power converter, and a thermal coupling member that thermally couples the battery and converter, allowing for shared temperature control using a single cooling device, thereby reducing the device's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the battery module and power converter are structurally separated with different cooling devices, then the operating temperatures can be controlled within rated limits, but the size of the power conversion device increases
Solution Approach 1:
The patent combines the cooling devices for the battery module and power converter into a single integrated cooling system. The cooling device includes a heat exchanger that can simultaneously cool both components, eliminating the need for separate cooling systems and reducing overall device size while maintaining proper temperature control for both the battery module and power converter
Solution Approach 2:
The cooling device is designed with multi-functionality to serve both the battery module and power converter. The heat exchanger can handle thermal management for both components through a unified cooling circuit, allowing one cooling system to perform multiple functions that previously required separate systems
2Reliability
If the battery module and power converter are thermally isolated, then each can be cooled independently within rated limits, but the device complexity increases
Solution Approach 1:
The patent merges the thermal management systems by using a single heat exchanger and cooling circuit that serves both the battery module and power converter. This integration reduces the number of separate cooling systems and components, thereby reducing device complexity while maintaining reliable temperature control through unified thermal management
3Reliability
If separate cooling devices are used for battery module and power converter, then each component can be optimized for its specific thermal requirements, but the manufacturing cost increases
Solution Approach 1:
The cooling device is designed as a universal thermal management system that can handle both the battery module and power converter. By using a single heat exchanger and integrated cooling circuit, the patent reduces the total number of components that need to be manufactured and assembled, thereby reducing manufacturing costs while maintaining the ability to optimize thermal conditions for each component
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
This configuration effectively controls the operating temperatures of both the battery and power converter using a single cooling system, minimizing the device's size while maximizing the performance of the all-solid-state batteries and reducing noise and wiring complexity.
Implementation Method 1
a thermal coupling member that thermally couples the all-solid-state battery and the power converter
Data Source
AI summary
Provided is a power conversion device including an all-solid-state battery, a power converter that converts power between the all-solid-state battery and a load, and a thermal coupling member that thermally couples the all-solid-state battery and the power converter.