Battery Pack Side Cooling Layout for Uniform Heat Dissipation
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Solution Overview
Problem
Existing battery packs face issues with uneven heat distribution and poor heat dissipation due to liquid-cooling plates being arranged only at the top or bottom, leading to reduced efficiency and shortened service life.
Innovation Solution
A battery pack design with first and second liquid-cooling plates at opposite sides, covering the battery module completely, and omitting external covers to enhance direct contact with the environment, ensuring uniform heat absorption and rapid transfer to the cooling medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a liquid-cooling plate is arranged only at the top or bottom of the battery pack, then the structure is simple, but the heat dissipation effect is poor and heat distribution is uneven
Solution Approach 1:
The cooling system is segmented into multiple independent liquid-cooling plates arranged at different locations (top, bottom, and/or sides) within the battery pack. Each cooling plate independently manages heat from specific battery modules, enabling localized heat dissipation and more uniform temperature distribution across the entire battery pack.
2Strength
If a cover is disposed outside the liquid-cooling plate to improve support strength and protection, then the structural strength is improved, but the heat exchanging efficiency is reduced
Solution Approach 1:
The protective cover and liquid-cooling plate are merged into a single integrated component. The cooling plate itself is designed with sufficient structural strength to provide both thermal management and mechanical protection, eliminating the need for a separate external cover that would act as a thermal barrier and reduce heat exchange efficiency.
3Reliability
If the liquid-cooling plate is covered by an external cover, then the battery pack is protected, but thermal resistance increases and heat transfer to cooling medium is slower
Solution Approach 1:
The protective function and thermal management function are combined in the liquid-cooling plate itself. By integrating structural reinforcement features directly into the cooling plate design, the plate provides both mechanical protection and optimal thermal contact with the cooling medium, eliminating the thermal barrier effect of separate external covers.
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
Uniform heat dissipation and improved efficiency by preventing uneven heat distribution, maintaining the battery module within an appropriate temperature range and extending its service life.
Implementation Method 1
heat generated by the battery module can be uniformly and effectively absorbed and dissipated by the first liquid-cooling plate and the second liquid-cooling plate
Implementation Method 2
the generated heat is dissipated by a cooling medium flowing inside the liquid-cooling plate
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A battery pack includes: a battery case body (1), defining a first opening (11) in a side of the battery case body and a second opening (12) in another side of the battery case body opposite to the first opening; a battery module (2), mounted inside the battery case body; a first liquid-cooling plate (3), assembled at the first opening of the battery case body; a second liquid-cooling plate (4), assembled at the second opening of the battery case body; and a CCS assembly (5), disposed between the battery module and the first liquid-cooling plate.