Battery Pack Holder Plate Cooling Layout for Leak Containment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face challenges in efficiently dissipating heat and preventing leakage of cooling fluids, which can lead to reduced performance and reliability, especially in high-power applications like electric vehicles.
Innovation Solution
A battery pack design that incorporates a cooling fluid accommodation space with direct contact with battery cells, sealed by a potting resin, and a structural configuration that includes holder plates and a case to enhance heat dissipation and prevent fluid leakage, featuring a specific height relationship between the components to ensure effective sealing and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling fluid accommodation space is introduced to improve heat dissipation, then heat dissipation efficiency is improved, but the risk of cooling fluid leakage increases
Solution Approach 1:
The cooling fluid accommodation space is segmented into multiple regions by partition walls, with each region independently accommodating cooling fluid. This segmentation allows for localized heat dissipation while containing potential leakage within specific zones, preventing system-wide failure.
Solution Approach 2:
A sealing structure comprising a sealing member and adhesive is introduced as an intermediary between the case and the holder plates. This sealing intermediary prevents direct contact between the cooling fluid and the external environment, thereby preventing leakage while maintaining the cooling function.
2Stability of the object's composition
If holder plates are used to accommodate battery cells, then structural organization is improved, but the complexity of sealing the cooling fluid increases
Solution Approach 1:
The sealing function is merged with the existing holder plates and case structure. The holder plates serve dual purposes: accommodating battery cells and providing mounting surfaces for the sealing structure. This integration reduces the need for separate sealing components and simplifies the overall structure.
Solution Approach 2:
A flexible sealing member made of elastomeric material is used to create the seal between the case and holder plates. This flexible sealing film conforms to the mating surfaces, providing effective sealing while accommodating manufacturing tolerances and assembly variations, thereby reducing structural complexity.
3Reliability
If the cooling fluid accommodation space is sealed with potting resin, then leakage prevention is improved, but manufacturing precision requirements increase
Solution Approach 1:
The sealing member and adhesive are pre-installed on the holder plates before the potting resin is applied. This preliminary sealing action creates a first line of defense against leakage, allowing the potting resin to be applied with less precision while still ensuring leak-free operation. The potting resin serves as a secondary seal and structural encapsulation rather than the primary sealing mechanism.
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 improves heat dissipation efficiency and prevents cooling fluid leakage, enhancing the performance and reliability of battery packs, particularly in high-power applications by ensuring effective heat transfer and fluid containment.
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 thereof; 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 to accommodate the cooling fluid, and the case, the battery cells, and the first and second holder plates have heights in the height direction that satisfy the condition: a height between the first and second holder plates <a height of the battery cells <a height of the case, and the battery pack further includes a potting resin on the first and second holder plates.