Battery Housing Conduction for Uniform Current and Heat Dissipation
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Solution Overview
Problem
Existing battery structures experience non-uniform current and heating due to insulated terminal connections, leading to increased manufacturing complexity and reduced service life, as well as inefficient heat dissipation.
Innovation Solution
A battery design where the first terminal is electrically connected to the housing, allowing current to flow uniformly from the terminal to the tab, through the housing, and out to the second terminal, enhancing heat dissipation and simplifying the mounting structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both terminals are insulated from the housing, then electrical isolation is achieved, but current distribution becomes non-uniform and heating increases
Solution Approach 1:
The patent segments the terminal connection approach by differentiating between the first terminal (electrically connected to housing) and the second terminal (insulated from housing). This segmentation allows the current to have multiple return paths, improving current uniformity while maintaining electrical isolation where needed.
Solution Approach 2:
The housing serves as an intermediary conductive path between the first terminal and the first tab. By making the housing electrically connected to the first terminal, it provides an additional current pathway that distributes current more uniformly and improves heat dissipation.
2Reliability
If both terminals are insulated from the housing, then electrical isolation is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the first terminal with the housing by establishing electrical connection between them. This eliminates the need for separate insulating mounting structures for the first terminal, simplifying the overall mounting structure while maintaining the required electrical isolation for the second terminal.
Solution Approach 2:
The housing serves multiple functions: it provides structural support, acts as a thermal management pathway, and serves as an electrical conduction path for the first terminal. This multi-functionality reduces the need for additional components and simplifies the mounting structure.
3Reliability
If current repeatedly flows through the core, then electrical connection is maintained, but heat dissipation becomes inefficient and service life reduces
Solution Approach 1:
The patent extracts the heat dissipation function from the core by providing an alternative current pathway through the housing. This reduces the thermal load on the core, improving heat dissipation efficiency and extending service life while maintaining electrical connection integrity.
Solution Approach 2:
The patent adds a spatial dimension to current flow by utilizing the housing as a conductive pathway. Instead of current flowing only through the core in a linear path, it now has a three-dimensional flow path that includes the housing, distributing current more evenly and reducing hot spots.
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 ensures uniform current flow and heating, improving the battery's service life and safety by dissipating heat effectively through the housing, while reducing manufacturing costs.
Implementation Method 1
a first terminal 12a and a second terminal 12b respectively mounted to the housing 10, where the first terminal 12a is electrically connected to the housing 10... the current flowing direction of the battery 1 is from the first terminal 12a to the first tab 13a, from the first tab 13a to the core 11, and then from the core 11 to the second terminal 12b... current inside the battery is uniform and heating is uniform
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A battery (1), a battery pack (2) and a vehicle (3) are disclosed. The battery (1) includes a housing (10) having a sealed chamber (100), a core (11) packaged in the sealed chamber (100), and a first terminal (12a) and a second terminal (12b) respectively mounted to the housing (10), where the first terminal (12a) is electrically connected to the housing (10), and the second terminal (12b) is insulated from the housing (10). The battery (1) further includes a first tab (13a) and a second tab (13b) respectively led out from the core (11), the first tab (13a) being electrically connected to the housing (10), the first tab (13a) being electrically connected to the first terminal (12a) through the housing (10), and the second tab (13b) being electrically connected to the second terminal (12b).