Battery Cooling Plate Control With Variable-Speed Compressor
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Solution Overview
Problem
Existing battery systems lack an efficient method for cooling battery cells, which can lead to overheating and reduced performance or lifespan.
Innovation Solution
A battery system that includes a cooling plate with a conduit, a compressor, a condenser, and temperature sensors, where a microprocessor controls the compressor's RPM based on temperature readings to effectively cool battery cells by pumping refrigerant through the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling system is added to the battery system, then the temperature control and battery performance are improved, but the device complexity increases
Solution Approach 1:
The cooling system is integrated with the battery module structure, where the cooling plate is positioned to directly contact multiple battery cells and the housing serves dual purposes as both structural enclosure and thermal management component. This merging approach provides effective temperature control while minimizing the addition of separate complex systems.
Solution Approach 2:
A cooling plate with embedded conduit acts as an intermediary thermal management component between the battery cells and the refrigerant circulation system. The cooling plate distributes cooling uniformly across multiple battery cells through its conduit network, simplifying the overall system architecture while maintaining effective temperature control.
2Productivity
If dynamic compressor control is implemented, then the cooling efficiency is improved, but the device complexity increases
Solution Approach 1:
Temperature sensors are positioned to monitor battery cell temperatures and cooling plate temperature, providing feedback signals to the microprocessor. The microprocessor dynamically adjusts compressor RPM based on this thermal feedback, optimizing cooling efficiency while maintaining manageable control system complexity through standard feedback control architecture.
Solution Approach 2:
The compressor operating speed is made dynamic rather than fixed, allowing the system to adapt cooling capacity to actual thermal demands. The microprocessor varies compressor RPM in response to changing battery temperature conditions, improving cooling efficiency while using conventional variable speed control methods.
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
The system efficiently cools battery cells by dynamically adjusting compressor speed based on temperature, enhancing performance and extending battery life.
Implementation Method 1
The solid cooling fin is configured to conduct heat energy from the battery cell to the cooling plate
Implementation Method 2
the compressor pumps a refrigerant through the condenser and the conduit of the cooling plate to cool the first and second battery cells
Data Source
AI summary
A battery system having a cooling plate with a conduit therein is provided. The system further includes a battery module having first and second battery cells. The system further includes a compressor, and a condenser coupled between the compressor and the conduit of the cooling plate. The system further includes a microprocessor that determines a maximum temperature level of the first and second battery cells, and determines a target temperature level for the cooling plate based on the maximum temperature level. The microprocessor determines a temperature error value based on a difference between a temperature level and the target temperature level of the cooling plate, and determines a desired RPM value for the compressor based on the temperature error value.