Immersion Battery Cooling Plate Layout for Uniform Heat Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing thermal management systems for power batteries suffer from low heat-exchange efficiency, poor thermal uniformity, lack of gas discharge measures, and high complexity, leading to safety concerns and increased costs.
Innovation Solution
An immersion-type thermal management system with a power battery unit and thermal management unit, featuring a liquid cooling plate, external circulation path, and a controller that switches between cooling and heating modes, incorporating S-shaped passages and gas discharge mechanisms to ensure uniform heat exchange and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealed battery box with heat-exchange liquid medium is used for indirect heat transfer, then thermal safety is improved, but heat-exchange efficiency deteriorates
Solution Approach 1:
The patent introduces a heat-exchange plate as an intermediary component between the battery module and the heat-exchange liquid. The plate absorbs heat from the battery module through thermal conduction and transfers it to the liquid medium, achieving efficient heat transfer while maintaining system safety through the sealed box structure.
Solution Approach 2:
The patent utilizes liquid circulation through the sealed battery box to achieve heat transfer. The heat-exchange liquid flows through channels in the sealed box, absorbing or releasing heat to/from the battery module, thereby improving heat-exchange efficiency while maintaining thermal safety through the closed hydraulic system.
2Device complexity
If liquid outlet is positioned at the bottom of the battery box, then structure simplicity is improved, but gas discharge capability deteriorates
Solution Approach 1:
The patent positions the liquid outlet at the top of the battery box rather than the bottom, utilizing the vertical dimension to enable effective gas discharge. This positioning allows gas bubbles to naturally rise and escape through the outlet, combining structural simplicity with effective gas discharge capability through clever spatial arrangement.
3Adaptability or versatility
If heating function is added to thermal management system, then adaptability to extreme conditions is improved, but device complexity deteriorates
Solution Approach 1:
The patent designs the thermal management system with multi-functionality, where the same liquid circulation system can perform both cooling and heating functions. By positioning the liquid outlet at the top and controlling flow direction, the system adapts to both high-temperature and low-temperature extreme conditions without requiring separate heating and cooling systems, thereby reducing overall complexity.
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 enhances thermal uniformity and safety, prevents thermal runaway, and reduces costs by efficiently managing temperature fluctuations and gas discharge, ensuring reliable operation under diverse conditions.
Implementation Method 1
a liquid cooling plate, the liquid cooling plate is provided with internal liquid outlets and located below the battery module
Implementation Method 2
the external circulation path is connected to the external liquid inlet from the external liquid outlet and comprises an expansion box, a circulating pump
Implementation Method 3
a water cooling unit
Implementation Method 4
a heater
Data Source
Figure 1~2
Figure 3
AI summary
An immersion-type thermal management system for power batteries comprises a power battery unit and a thermal management unit. The power battery unit comprises a box, a battery module and a liquid cooling plate, the box is provided with an external liquid inlet and an external liquid outlet, the liquid cooling plate is provided with internal liquid outlets and located below the battery module, a liquid passage is arranged in the liquid cooling plate, an immersion space is formed in the box, the internal liquid outlets are located between and connected to the liquid passage and the immersion space, the external liquid inlet is connected to the liquid passage, and the external liquid outlet is connected to the immersion space. The thermal management unit comprises a controller and an external circulation path, and the external circulation path is connected to the external liquid inlet from the external liquid outlet and comprises an expansion box, a circulating pump, a water cooling unit, a heater and a check valve. The immersion-type thermal management system for power batteries provided by the invention has a heating mode and a cooling mode and can be easily controlled as required, and liquid can sufficiently exchange heat with the battery module, so the efficiency is high, the effect is good, and the problem of poor thermal uniformity and safety in use of power batteries is solved.