Battery Box Heat Exchange Plate Layout for Stable Module Temperature
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Solution Overview
Problem
The existing battery box design, where the heat exchange plate is fixed to the beams of the lower frame body, results in heat transfer between the heat exchange plate and the beams, affecting the heat exchange effect on the batteries and the stability and constancy of the battery's operating temperature.
Innovation Solution
The battery box design includes a heat exchange plate and a lower frame body with internal beams that are partly in contact with the top plane of the heat exchange plate, reducing the contact area and using heat insulation glue to further minimize heat exchange between the internal beams and the heat exchange plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the heat exchange plate is fixed to the beams of the lower frame body, then the structural stability is improved, but the heat exchange effect on the batteries deteriorates due to heat transfer to the beams
Solution Approach 1:
The bottom plane of the internal beam is segmented into multiple surfaces at different heights: a first plane in contact with the heat exchange plate, and second/third planes recessed upwardly to be spaced apart from the heat exchange plate. This segmentation reduces the contact area between the beam and heat exchange plate, thereby reducing harmful heat transfer while maintaining structural stability.
Solution Approach 2:
Heat insulation glue is introduced as an intermediary substance filled between the second plane (or third plane) of the beam bottom and the heat exchange plate. This intermediary layer provides thermal insulation, blocking the heat transfer path from the heat exchange plate to the beam, thus resolving the contradiction between structural support and heat exchange performance.
2Strength
If the entire bottom plane of internal beams contacts the heat exchange plate, then the structural support is improved, but the operating temperature stability of batteries deteriorates
Solution Approach 1:
The bottom plane of the internal beam is divided into contact and non-contact portions. The first plane provides structural support contact, while the second and third planes are recessed to reduce contact area. This segmentation allows the beam to maintain its support function while minimizing heat transfer that would affect battery temperature stability.
Solution Approach 2:
Heat insulation glue is used as a mediator between the beam and heat exchange plate. It fills the gaps between the recessed planes and the heat exchange plate, providing thermal insulation that prevents heat from transferring to the beam structure, thereby maintaining reliable and stable battery operating temperatures.
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 design reduces heat exchange between the heat exchange plate and the internal beams, thereby minimizing its impact on the heat exchange with the battery modules, which improves the stability, constancy, and controllability of the operating temperature of the batteries.
Implementation Method 1
The heat exchange plate is used to support the battery modules and exchanges heat with batteries of the battery modules
Implementation Method 2
the battery box further includes heat insulation glue, the heat insulation glue being filled between the second plane of the bottom plane of the internal beam and the top plane of the heat exchange plate
Data Source
AI summary
This application provides a battery box, which includes: a heat exchange plate and a lower frame body located on the heat exchange plate. The lower frame body includes edge beams and internal beams, the edge beams forming a circumferential closure opened in an up-down direction, the edge beams and the heat exchange plate together forming an accommodating space with an upward opening, and the internal beams located inside the accommodating space and divide the accommodating space into sub-accommodating spaces for placing battery modules. The heat exchange plate is configured to support the battery modules and exchanges heat with batteries of the battery modules, and a bottom plane of an internal beam is partly in contact with a top plane of the heat exchange plate in the up-down direction.