Metal-shell Battery Circuit Board Parallel Orientation
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Solution Overview
Problem
Metal-shell batteries face challenges in miniaturization and lightweight design due to uneven spacing between the circuit board and electrodes, leading to increased installation space and weight.
Innovation Solution
A metal-shell battery design where the circuit board is positioned parallel to the metal housing, with conductive sheets and an insulation filler to control spacing, reducing installation space and allowing for compact and lightweight configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the circuit board is fitted to minimize distance to both electrodes, then the distance between circuit board and electrodes is reduced, but the circuit board becomes oblique and occupies more installation space
Solution Approach 1:
The patent introduces conductive sheets as intermediary components between the circuit board and the battery electrodes. These conductive sheets serve as mediators that enable the circuit board to maintain a parallel orientation to the battery housing while still achieving minimal distance to both electrodes through the flexible conductive connection, thereby resolving the contradiction between minimizing distance and maintaining compact installation space.
Solution Approach 2:
The patent changes the spatial orientation parameter of the circuit board from oblique to parallel relative to the battery housing. By adjusting this geometric parameter, the circuit board can maintain minimal distance to electrodes while occupying less installation space, thus resolving the technical contradiction.
2Reliability
If the circuit board is disposed obliquely to connect both electrodes, then the circuit board connects to both electrodes, but the installation space and battery size increase
Solution Approach 1:
The conductive sheets act as intermediaries that enable reliable electrical connection between the circuit board and both electrodes without requiring the circuit board to be disposed obliquely. This intermediary approach maintains connection reliability while allowing the circuit board to be parallel to the housing, reducing installation space.
3Area of stationary object
If the circuit board is positioned parallel to the metal housing, then the installation space is reduced, but additional components like conductive sheets and insulation fillers are needed
Solution Approach 1:
The conductive sheets serve multiple functions: they provide electrical connection between the circuit board and electrodes, enable the circuit board to be positioned parallel to the housing, and act as insulation fillers in certain configurations. This multi-functionality reduces the need for separate components, thereby resolving the contradiction between reducing installation space and minimizing device complexity.
Data Source
AI summary
A metal-shell battery includes: a cell including a metal housing and an electrode assembly sealed in the metal housing; a first conductive sheet; and a second conductive sheet. The metal housing includes a first surface. An electrode post is disposed protrusively on the first surface and is insulated from the metal housing. Two electrodes of the electrode assembly are electrically connected to the electrode post and the metal housing respectively. One end of the first conductive sheet is connected to the first surface. One end of the second conductive sheet is connected to the electrode post. A circuit board is connected to the other end of the first conductive sheet and the other end of the second conductive sheet respectively. |S1-S2|≤1 mm, S1 and S2 are distances between the first surface, and the one end and the other end of the circuit board respectively.