Battery Pack Heat Exchange Assembly for Fast Cell Temperature Control
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Solution Overview
Problem
Existing cooling technologies for power batteries, such as air cooling and liquid cooling, face inefficiencies and high costs, with air cooling having poor thermal conductivity and liquid cooling being complex and costly, failing to meet the demands for cost reduction and efficient temperature management.
Innovation Solution
A battery assembly design incorporating a heat exchange element with serpentine tubular structure and meandering fluid channels for direct cooling, combined with a heating element for temperature adjustment, utilizing a simple and efficient cooling assembly with SAE quick connectors for ease of maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If air cooling is used to cool battery cells, then the cooling system is simple in structure, but the cooling effect is poor due to low thermal conductivity and small heat capacity of air
Solution Approach 1:
The patent transitions from air cooling to liquid cooling by introducing a cooling liquid circulation system. The cooling liquid flows through channels in direct contact with battery cells, utilizing the high thermal conductivity and heat capacity of liquids to achieve effective heat dissipation while maintaining system simplicity.
2Reliability
If liquid cooling technology is used to achieve uniform heat dissipation, then the cooling effect is good with high safety, but the system becomes complex in overall structure, requires a large number of components, and has high costs
Solution Approach 1:
The patent integrates the cooling liquid circulation system directly into the battery pack structure. The cooling channels are formed within the battery pack housing, and the cooling plate is merged with the structural components, eliminating the need for separate cooling system components and reducing overall system complexity while maintaining effective liquid cooling.
Solution Approach 2:
The cooling plate serves multiple functions: it acts as both a structural support component of the battery pack and a heat exchange component. The circulation system is designed to serve the entire battery pack uniformly, achieving precise temperature control across all cells through a single integrated system rather than multiple separate cooling units.
3Manufacturing precision
If a complex liquid cooling system is implemented, then precise temperature control is achieved, but the cost increases and it becomes difficult to meet the demand for cost reduction
Solution Approach 1:
The patent optimizes the cooling system by adjusting key parameters: the cooling liquid flow rate, channel dimensions, and plate thickness are carefully selected to achieve the minimum effective configuration. This allows precise temperature control to be achieved with a simplified system that requires fewer components and lower manufacturing costs.
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 design enhances heat exchange efficiency, maintains battery performance under varying temperatures, reduces maintenance costs, and ensures safety and longevity of battery cells through direct cooling and heating capabilities.
Implementation Method 1
the liquid cooling technology achieves uniform heat dissipation by means of liquid circulation
Implementation Method 2
a heating element mounted on the heat exchange element, in close contact with each of the battery cells and configured to heat each of the battery cells
Data Source
AI summary
Disclosed in the present disclosure is a battery assembly, including: a battery row unit being arranged with a plurality of battery cells; a heat exchange element extending along a first direction, where the first direction is an arrangement direction of the plurality of battery cells, and the heat exchange element is configured to cool each of the battery cells; and a heating element mounted on the heat exchange element, in close contact with each of the battery cells and configured to heat each of the battery cells. Meanwhile, a battery pack applied with the battery assembly is further disclosed, which achieves a purpose of quickly adjusting the battery cells to an optimal temperature range on the premise of a simplified structure.