Battery Pack Heat Management Using Isolation and Conduction Plates
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Solution Overview
Problem
Current battery packs with adjacent cells and control components lack effective heat management, leading to rapid heat transmission and increased risk of combustion and explosions due to the absence of spacers between cells and control components, resulting in serious safety hazards.
Innovation Solution
Incorporating thermal isolation plates between the cell assembly and circuit board, and thermally conductive plates within the battery pack to manage heat distribution, thereby reducing heat transmission between components and ensuring effective heat dissipation while preventing fires and explosions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thermal isolation plates are added between cell assembly and circuit board, then fire prevention and thermal isolation are improved, but device complexity increases
Solution Approach 1:
A thermal isolation plate is introduced as an intermediary component between the cell assembly and circuit board. This plate acts as a heat barrier that prevents direct heat transmission from cells to the circuit board, thereby improving fire prevention without requiring fundamental redesign of the battery pack structure.
Solution Approach 2:
The battery pack internal space is segmented into distinct thermal zones by introducing the thermal isolation plate. This segmentation separates the high-heat cell assembly from the temperature-sensitive circuit board, allowing independent thermal management of each component zone.
2Reliability
If thermal isolation plates are added between cell assembly and circuit board, then heat transmission between components is reduced, but heat dissipation functionality may be compromised
Solution Approach 1:
The thermal isolation plate is strategically positioned only between the cell assembly and circuit board where heat transmission poses a safety risk. Other areas of the battery pack maintain their original thermal characteristics, allowing heat dissipation to occur naturally through未被隔离 regions and the housing.
Solution Approach 2:
The thermal isolation plate serves as a selective mediator that blocks harmful heat transmission paths while allowing beneficial heat dissipation through other pathways. It mediates between the need for thermal protection and the need for thermal management.
3Volume of stationary object
If gaps between cells and control component are reduced, then battery pack size is minimized, but safety risk increases due to rapid heat transmission
Solution Approach 1:
The thermal isolation plate is inserted into the gap between cell assembly and circuit board, maintaining the compact spacing while introducing a heat-blocking intermediary. This allows the battery pack to remain space-efficient while eliminating the harmful direct heat transmission path that would exist in a gapless design.
Solution Approach 2:
The gap region between cell assembly and circuit board is given special thermal properties through the isolation plate, while other regions maintain their original spacing characteristics. This localized quality enhancement provides safety without requiring increased overall dimensions.
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 solution effectively controls heat transmission between the cell and circuit assemblies, slowing down the spread of combustion or explosions, enhancing fire prevention and thermal isolation while maintaining heat dissipation functionality, thus improving safety and performance.
Implementation Method 1
one or more first thermal isolation plate, disposed between the cell assembly and the circuit board, and used for reducing the transmission of heat between the cell assembly and the circuit board
Implementation Method 2
one or more thermally conductive plate, configured to at least partially transmit heat generated by the cell assembly in the internal space to the outside
Data Source
AI summary
A battery pack may include a housing, defining an internal space of the battery pack. A battery pack may include a cell assembly, located in the internal space and comprising multiple cells. A battery pack may include a circuit board, located in the internal space and disposed at one side of the cell assembly. A battery pack may include a heat management apparatus, the heat management apparatus comprising: one or more first thermal isolation plate, disposed between the cell assembly and the circuit board, and used for reducing the transmission of heat between the cell assembly and the circuit board; and one or more thermally conductive plate, configured to at least partially transmit heat generated by the cell assembly in the internal space to the outside.