Battery Cell Insulating Support for Electrode Vibration Buffering
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Solution Overview
Problem
The service life of batteries is shortened due to prolonged exposure to shaking and vibrating environments, leading to issues such as electrode assembly movement, tearing of connections, and potential short circuits.
Innovation Solution
An insulating member is placed between the electrode assembly and the shell to elastically support and isolate the electrode assembly, buffering vibrations and reducing collision amplitudes, thereby preventing connection failures and short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrode assembly is directly placed in the shell without insulation, then the structure is simple, but the electrode assembly collides with the shell during vibration causing short circuits and connection failures
Solution Approach 1:
An insulating member is introduced as an intermediary component between the electrode assembly and the shell. This insulating member includes a buffer portion with protrusions that elastically deform to absorb vibration energy, preventing direct contact and collision between the electrode assembly and the shell, thereby avoiding short circuits and connection failures while extending battery service life
Solution Approach 2:
The buffer portion of the insulating member is designed with protrusions that provide preemptive cushioning against vibrations. These protrusions elastically deform before the electrode assembly can collide with the shell, absorbing impact energy in advance and protecting the electrode assembly and its connections from damage during vibration cycles
2Reliability
If the insulating member is added to buffer vibrations, then the service life is prolonged, but the device complexity increases
Solution Approach 1:
The insulating member is designed to perform multiple functions simultaneously: it provides electrical insulation between the electrode assembly and the shell, buffers vibrations through elastic deformation of its buffer portion, and prevents both short circuits and mechanical damage. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving reliable vibration protection
Solution Approach 2:
The insulating member merges the functions of electrical insulation and vibration buffering into a single integrated component. The buffer portion with protrusions combines the insulating material properties with mechanical cushioning capability, eliminating the need for separate insulating and cushioning components, thus prolonging service life with minimal increase in 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 insulating member effectively prolongs the battery's service life by maintaining stable electrical connections and preventing damage from vibrations and collisions.
Implementation Method 1
the insulating member is configured to elastically support the electrode assembly to buffer vibration of the electrode assembly within the shell
Implementation Method 2
the insulating member can buffer the vibration of the electrode assembly, absorb impact of the vibration, and reduce an amplitude of vibration of the electrode assembly
Data Source
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AI summary
The present application relates to a battery cell, a battery, a power consumption apparatus, and a manufacturing method and device of a battery cell. The battery cell includes: a shell comprising a wall part; an electrode assembly disposed within the shell; and an insulating member disposed between the electrode assembly and the wall part to isolate the wall part from the electrode assembly in an insulating manner. The insulating member is configured to elastically support the electrode assembly to buffer vibration of the electrode assembly within the shell. When the electrode assembly vibrates relative to the shell due to shaking or vibrating of the battery cell, the insulating member can buffer the vibration of the electrode assembly, and reduce an amplitude of vibration of the electrode assembly, which alleviates the problem that the electrode assembly pulls the electrode lead-out part to avoid the failure of electrical connection of the electrode assembly and the electrode lead-out part and could also mitigate rigid collision between the electrode assembly and the shell, so as to protect the electrode assembly and prolong the service life of the battery cell.