Battery Housing Conductor Layout for Higher Energy Density
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Solution Overview
Problem
Existing battery designs face challenges in increasing energy density due to the thickness added by H-shaped electrode posts and insulation spacers, which also pose risks of short circuits and electrolyte leakage.
Innovation Solution
A battery design featuring a housing assembly with a conductive member that replaces the electrode post, using an insulation material for the installation portion with a via hole, allowing the conductive member to be partially or fully located within, eliminating the need for additional insulation layers and reducing overall thickness, thus enhancing energy density and preventing short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If H-shaped electrode post with insulation spacers is used, then electrical insulation is achieved, but overall thickness increases and energy density decreases
Solution Approach 1:
The patent extracts the insulation function from separate insulation spacer components and integrates it directly into the housing body through insulation coatings or insulating structures formed on the housing inner surface. This eliminates the need for additional insulation layers between the electrode post and housing, thereby reducing overall thickness while maintaining electrical insulation.
Solution Approach 2:
The patent merges the housing body and insulation function into a single integrated structure. The housing body is designed with insulating properties either through material selection or surface treatment, combining structural support and electrical insulation functions into one component, thus eliminating the need for separate insulation spacers and reducing overall thickness.
2Reliability
If H-shaped electrode post with insulation spacers is used, then electrical insulation is achieved, but energy density decreases
Solution Approach 1:
By extracting the insulation function from separate components and integrating it into the housing body, the patent removes unnecessary material layers that would otherwise occupy valuable internal space. This increases the volume available for active battery materials, thereby improving energy density while maintaining electrical insulation.
Solution Approach 2:
The integration of insulation function into the housing body reduces the total material volume required, allowing more space for energy-storing components. This merging of functions eliminates redundant materials and improves the ratio of active material to total battery mass, enhancing energy density.
3Reliability
If insulation spacers are added, then electrical insulation is improved, but device complexity increases
Solution Approach 1:
The patent extracts the insulation function from separate insulation spacer components and integrates it directly into the housing body through insulation coatings or insulating structures. This reduces the number of discrete parts and assembly steps, thereby simplifying the overall structure and reducing device complexity.
Solution Approach 2:
By merging the housing body and insulation function into a single integrated structure, the patent reduces the number of components that need to be manufactured, handled, and assembled. This integration simplifies the overall device structure, reduces assembly complexity, and maintains electrical insulation functionality.
Data Source
AI summary
A battery, including a battery cell and a housing assembly accommodating the battery cell. The battery cell includes a first tab. The housing assembly includes a first housing body and a second housing body. The first housing body and the second housing body define an accommodation space to accommodate the battery cell. The first housing body and/or the second housing body include an installation portion provided with a via hole. A conductive member is disposed on an inner surface or an outer surface of the housing assembly and electrically connected to the first tab. In a through direction of the via hole, a projection of the conductive member is at least partially located in the via hole. The conductive member can avoid occupying internal space of the housing assembly, and increase the energy density of the battery. An electric device containing the battery is provided.