Battery Pack Holder Plate Layout for Direct Fluid Cooling Isolation
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Solution Overview
Problem
Existing battery packs face challenges in efficiently dissipating heat and preventing electrical interference between cooling fluids and electrodes, which can affect the performance and reliability of battery cells.
Innovation Solution
A battery pack design that includes an accommodation space for a cooling fluid to directly contact battery cells, improving heat dissipation efficiency, and insulates the cooling fluid to prevent electrical interference with the electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling fluid is used to cool battery cells, then heat dissipation efficiency is improved, but electrical interference between cooling fluid and electrodes may occur
Solution Approach 1:
An insulating layer is introduced as an intermediary between the cooling fluid and the battery electrodes. This layer allows thermal energy to be dissipated from the battery cells to the cooling fluid while preventing direct electrical contact that would cause short circuits or interference. The insulating layer acts as a mediator that permits heat transfer but blocks electrical conduction.
Solution Approach 2:
A thin film insulating structure is applied between the cooling fluid and battery components. This thin film provides sufficient electrical insulation while maintaining thermal conductivity for effective heat dissipation. The flexible nature of the thin film allows it to conform to the battery cell surfaces and maintain intimate thermal contact.
2Reliability
If cooling fluid is insulated to prevent electrical interference, then reliability is improved, but heat dissipation efficiency may be reduced
Solution Approach 1:
The insulating layer is designed with specific material properties that create a favorable balance between electrical resistance and thermal conductivity. By carefully selecting and optimizing the parameters of the insulating material (such as thickness, composition, and structure), the system achieves both electrical isolation and effective heat dissipation simultaneously.
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 dissipation efficiency by allowing direct contact between the cooling fluid and battery cells, while preventing electrical interference, thus improving the overall performance and reliability of the battery pack.
Implementation Method 1
a flow of a cooling fluid is induced for direct contact with battery cells, thereby improving heat dissipation efficiency
Data Source
AI summary
A battery pack includes: battery cells, each including end portions in a height direction; a case accommodating the battery cells and a cooling fluid; and first and second holder plates coupled to the case to face each other along the case such that the end portions of the battery cells are insertable therethrough, an accommodation space being defined between the first and second holder plates, and heights of the case, the battery cells, and the first and second holder plates in the height direction satisfy the following condition: a height between the first and second holder plates<a height of the battery cells<a height of the case, and the case includes a hollow member which is open in the height direction.