Battery Cover Plate Cavity Layout for Higher Cell Capacity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The capacity of batteries is limited by their volume, making it challenging to increase the overall performance and life of electronic devices and electric tools without expanding their physical size.
Innovation Solution
A battery unit design that includes a housing, a cover plate with a concave cavity, and battery posts, allowing the electrode core to have a larger volume by reducing the height of the battery posts and eliminating the need for insulation members, thereby increasing the internal volume and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the volume of the battery is increased to improve capacity, then the battery capacity is improved, but the mounting space requirement increases
Solution Approach 1:
The first battery post is nested within the concave cavity portion of the cover plate, allowing the battery post to be accommodated within the existing cover plate structure rather than extending outward. This nesting arrangement increases the internal volume available for the electrode core without increasing the overall battery volume.
Solution Approach 2:
The cover plate is designed with a concave cavity portion that utilizes the vertical dimension (depth) of the cover plate rather than only horizontal space. By creating a three-dimensional recessed structure, the design effectively increases the internal volume available for battery components without increasing the footprint or overall external dimensions of the battery.
2Volume of stationary object
If the height of battery posts is reduced to increase internal volume, then the internal volume is increased, but the electrical connection structure becomes more complex
Solution Approach 1:
The second battery post is directly electrically connected to the cover plate body without requiring separate insulation members or additional connection components. This merging of the battery post connection directly into the cover plate structure simplifies the overall connection architecture while still achieving the goal of reducing battery post height to increase internal volume.
Solution Approach 2:
The cover plate is designed to serve multiple functions: it provides structural closure for the battery housing, contains the concave cavity for accommodating the first battery post, and directly provides the electrical connection path for the second battery post. This multi-functionality eliminates the need for separate insulation members or connection components, reducing complexity while enabling reduced battery post height.
3Device complexity
If insulation members are eliminated to simplify structure, then the structure is simplified, but the risk of electrical insulation failure increases
Solution Approach 1:
The cover plate is designed to serve multiple functions: it provides structural closure for the battery housing, contains the concave cavity for accommodating the first battery post, and directly provides the electrical connection path for the second battery post. This multi-functionality eliminates the need for separate insulation members or connection components, reducing complexity while still achieving reliable electrical connections through the integrated design.
Data Source
AI summary
The present application provides a battery unit, a battery module, and a vehicle. The battery unit includes a housing, a cover plate, a first battery post, a second battery post, and an electrode core. The housing is provided with an opening. The cover plate covers the opening. The electrode core is disposed inside the housing. The cover plate includes a cover plate body and a concave cavity portion that is concave inward relative to an outer surface of the cover plate body. The first battery post is accommodated in the concave cavity portion. A first electrode tab of the electrode core is electrically connected to the first battery post. The second battery post is electrically connected to the cover plate body. A second electrode tab of the electrode core is electrically connected to the cover plate body.