Battery Pole Sealing Structure for Thermal Expansion Insulation
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Solution Overview
Problem
The expansion of battery poles during operation causes the sealing components to be squeezed out of shape, leading to insulation failure and stability issues in batteries.
Innovation Solution
A battery design that includes a housing with a first through hole, a pole with a connecting and limiting part, and a sealing component with a recess to accommodate deformation, ensuring that the sealing component can absorb expansion forces without compromising the insulation and stability of the battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing component is provided between the pole and the housing to ensure sealing, then sealing performance is improved, but the insulation stability deteriorates when the pole expands due to temperature increase
Solution Approach 1:
The recess is pre-formed in the sealing component at the position where deformation is most likely to occur during pole expansion. This beforehand cushioning space allows the sealing component to deform inward when the pole expands due to temperature increase, preventing the sealing component from being squeezed out of shape and maintaining insulation stability between the pole and housing
Solution Approach 2:
The recess is specifically located at the position close to the connection between the first sealing part and the second sealing part, where deformation is most critical. This local modification creates a deformation space precisely where needed, allowing the sealing component to accommodate pole expansion while maintaining sealing effectiveness and insulation stability in other critical areas
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 battery design effectively mitigates the impact of pole expansion on sealing components, maintaining insulation integrity and enhancing the overall stability of the battery.
Implementation Method 1
as an internal temperature of the battery increases during operation, the pole tends to expand
Implementation Method 2
the second sealing part is interference-fitted with an inner sidewall of the first through hole
Data Source
AI summary
The present disclosure provides a battery, including a housing, a pole, and a sealing component. The housing includes an end plate provided with a first through hole and a lateral wall. The pole includes a pole connecting part passing through the first through hole and a pole limiting part provided on the pole connecting part and located on a side of the end plate close to the lateral wall. The sealing component includes a first and second sealing parts. The first sealing part is arranged around the pole connecting part and located between the pole limiting part and the end plate. The second sealing part is connected to the first sealing part, arranged around the pole connecting part, and interference-fitted with the first through hole. The first sealing part is provided with a recess configured to provide a deformation space when the first sealing part is squeezed.