Sheet-Pole Battery Pack Structure for Fast-Charging Heat Transfer
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Solution Overview
Problem
Conventional battery packs suffer from limited fast charging capability due to poor heat dissipation, which restricts the efficient charging of batteries during high-rate charging processes.
Innovation Solution
The battery pack incorporates a cell design with a sheet-like pole and a heat transfer member that transfers heat from the cell's first surface to its second surface, enhancing heat dissipation and allowing for faster charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional battery design is used, then structure is simple, but heat dissipation capability is poor
Solution Approach 1:
The battery housing is divided into multiple surfaces (first surface and second surface) with heat transfer members integrated into specific surfaces. This segmentation allows targeted heat dissipation at different locations without requiring complete structural redesign of the entire battery housing.
Solution Approach 2:
The heat transfer member is merged with the housing structure, forming an integrated assembly where the heat transfer member becomes part of the housing itself. This combination improves heat dissipation while avoiding the need for separate, additional cooling components.
2Speed
If fast charging is implemented, then charging speed increases, but heat generation increases
Solution Approach 1:
The patent converts the harmful heat generated during fast charging into a manageable thermal flow by directing it through heat transfer members from the first surface to the second surface. This allows the heat to be systematically removed rather than allowing it to accumulate and limit charging speed.
Solution Approach 2:
The heat transfer member acts as an intermediary between the battery cell (where heat is generated) and the external environment. It mediates the heat transfer process, enabling efficient heat removal that supports faster charging rates without excessive temperature rise.
3Productivity
If heat dissipation is improved, then fast charging capability increases, but device complexity increases
Solution Approach 1:
Instead of implementing a complex heat dissipation system throughout the entire battery, the patent applies heat transfer members locally to specific surfaces (first and second surfaces) where heat generation occurs. This localized approach achieves effective heat dissipation with minimal additional complexity.
Solution Approach 2:
The housing structure serves multiple functions: it provides mechanical protection for the battery cell and simultaneously acts as a heat transfer pathway through the integrated heat transfer members. This multi-functionality reduces the need for separate cooling components and minimizes overall structural complexity.
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 innovative design significantly improves heat dissipation, enabling faster charging capabilities by increasing the overcurrent area and efficiently transferring heat away from the charging area.
Implementation Method 1
The heat transfer member is configured to transfer heat on the cell close to the first surface to the second surface
Data Source
AI summary
A vehicle has a battery pack. The battery pack includes a single-cell battery and a heat transfer element. The single-cell battery includes a housing, a cell, and multiple poles. An accommodation space is defined in the housing, and the cell is disposed in the accommodation space. The housing at least has a first surface and a second surface. The poles are disposed at the cell and extend out of the housing from the first surface, and at least one of the poles is sheet-shaped. The heat transfer element can transfer heat on the single-cell battery close to the first surface to the second surface.