Heat-Compensation Cooling Module for Uniform Battery Temperatures
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Solution Overview
Problem
The existing battery cooling systems in electric vehicles suffer from inconsistent heat exchange efficiency due to temperature differences between battery modules, leading to reduced charging and discharging efficiency and shortened service life.
Innovation Solution
A heat-compensation serial cooling module is introduced, featuring a closed circulation pipeline with a main and compensational heat exchange pipeline arranged in series, where the working fluid flows oppositely through each pipeline to equalize temperatures across battery modules by transferring heat from hotter to cooler sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a serial circulation pipeline is used for cooling battery modules, then the cooling system structure is simple, but the temperature uniformity across battery modules deteriorates
Solution Approach 1:
The cooling system is segmented into multiple independent parallel circulation pipelines, each serving specific battery modules. This segmentation allows independent temperature control for different battery modules, resolving the temperature uniformity issue while maintaining manageable system complexity through modular design.
Solution Approach 2:
The system transitions from a single-dimensional serial pipeline to a multi-dimensional parallel pipeline architecture. By adding the dimension of parallelism, the system can simultaneously cool multiple battery modules with different thermal requirements, achieving temperature uniformity across modules while keeping the overall structure organized and manageable.
2Ease of manufacture
If working fluid flows through battery modules in series, then the cooling system is easy to implement, but the heat exchange efficiency deteriorates
Solution Approach 1:
The heat exchange process is segmented into multiple parallel pathways, allowing the working fluid to simultaneously exchange heat with different battery modules. This maintains high heat exchange efficiency by preventing thermal saturation while keeping the system easy to implement through standardized parallel pipeline connections.
Solution Approach 2:
The system moves from sequential heat exchange (serial) to simultaneous heat exchange (parallel), adding a temporal dimension to the heat transfer process. This allows multiple heat exchange operations to occur concurrently, maintaining high efficiency without complicating the implementation through standardized parallel architecture.
3Ease of operation
If a single cooling circuit is used, then the system is simple to operate, but the charging and discharging efficiency deteriorates
Solution Approach 1:
The cooling system is operated in segments with independent parallel pipelines, allowing different cooling rates to be applied to different battery modules based on their specific charging/discharging needs. This maintains high productivity while keeping operation simple through standardized control interfaces for each parallel circuit.
Solution Approach 2:
The system adds operational dimensionality by enabling independent control of multiple parallel cooling circuits simultaneously. This allows optimized charging and discharging efficiency for each battery module while maintaining ease of operation through standardized control mechanisms that can be applied uniformly across all parallel circuits.
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 solution ensures uniform temperatures across battery modules, enhancing their operational efficiency and extending their service life by maintaining consistent working conditions.
Implementation Method 1
Working fluid in the circulation pipeline flows through each battery module in order to take away the heat generated by each battery module
Implementation Method 2
the working fluid is heated up after absorbing heat generated by the battery module. The temperature difference between the working fluid and the battery module is decreased and cause loss of the heat exchange ability. Thus, the cooling efficiency of working fluid to each battery module is not uniform
Data Source
AI summary
The disclosure provides a heat-compensation serial cooling module including a heat exchanger, a cooling element, a pump, and a working fluid. The heat exchanger includes multiple heat exchanging portions. The heat exchange loop includes a main heat exchange pipeline and a compensational heat exchange pipeline serially connected to the heat exchanging portions. The main heat exchange pipeline and the compensational heat exchange pipeline are arranged parallelly and adjacently. The pump drives the working fluid to circulate in the heat exchange loop. A flowing direction of the working fluid in the main heat exchange pipeline is opposite to a flowing direction of the working fluid in the compensational heat exchange pipeline. The temperature of the compensational heat exchange pipeline is higher than that of the heat exchanging portions to compensate heat to make the temperature of each heat exchanging portion be approximately the same.