Battery Box Layout Separating Cells and High-Voltage Chamber Heat
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Solution Overview
Problem
In electric vehicle batteries, the high-voltage box is often damaged due to heat generated by thermal failures of the battery cell, leading to safety and control system issues, as both components share the same space.
Innovation Solution
A box body design with separate battery and high-voltage chambers prevents high-temperature gases from the battery cell from reaching the high-voltage box, ensuring the high-voltage control system remains functional and enhancing safety by isolating these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery cell and high-voltage box are placed in the same space, then the device complexity is reduced, but the high-voltage control system is damaged by thermal failure of the battery cell
Solution Approach 1:
The patent divides the battery housing into two separate chambers: a battery cell chamber and a high-voltage box chamber. This segmentation physically isolates the high-voltage control system from the battery cell, preventing thermal damage while maintaining a relatively simple integrated structure. The divider wall creates distinct functional zones within a single housing unit.
Solution Approach 2:
The high-voltage box is extracted from the common space with the battery cell by placing it in a separate chamber. This extraction removes the high-voltage control system from the hazardous environment created by battery cell thermal failure, ensuring its safety while keeping both components within the same overall battery housing.
2Reliability
If the battery cell and high-voltage box are separated into different chambers, then the safety performance is improved, but the device complexity increases
Solution Approach 1:
The battery housing is segmented into two chambers using a divider wall, creating physical separation between the battery cell and high-voltage box. This segmentation improves safety by isolating the high-voltage system from thermal hazards while maintaining a compact integrated design that does not significantly increase overall complexity.
Solution Approach 2:
The patent combines the separation function with the existing battery housing structure, integrating the divider wall into the overall housing design. This merging approach achieves chamber separation without adding independent complex subsystems, as the housing itself serves both containment and separation functions.
3Quantity of substance
If the high-voltage bin is disposed outside the main body, then the capacity of the battery can be enhanced, but the manufacturing precision requirement increases
Solution Approach 1:
The high-voltage bin is segmented as a separate component disposed outside the main battery housing. This external placement creates additional space for battery cells, enhancing capacity while requiring precise assembly interfaces to ensure proper electrical connections and sealing between the external bin and main body.
Solution Approach 2:
Connection structures and sealing elements act as intermediaries between the external high-voltage bin and the main battery housing. These intermediary components facilitate the connection while accommodating manufacturing tolerances, reducing the overall precision requirements compared to an integrated design.
Data Source
AI summary
The present disclosure relates to a box body (10), a battery (100), and an electric device. The box body (10) has a battery chamber (s1) and a high-voltage chamber (s2) arranged to be separated from each other. The battery chamber (s1) is configured to accommodate a battery cell (20), and the high-voltage chamber (s2) is configured to accommodate a high-voltage box.