Battery Cell Contact Pin Insulation to Prevent Short Circuits
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Solution Overview
Problem
Conventional battery cell charge/discharge devices are prone to short circuits during the charging and discharging process due to the charge/discharge pin tilting and contacting both the positive and negative electrode terminals, leading to defective battery cells.
Innovation Solution
A battery cell charge/discharge device with an insulating member that surrounds the charge/discharge head portion, made of elastic materials like polyamide, polyurethane, or polyester, which contacts the battery cell before the head portion, preventing simultaneous contact with both terminals and thus avoiding short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pin head portion is made longer to ensure contact with the battery cell terminals, then the charge/discharge reliability is improved, but the risk of short circuit increases when the pin tilts
Solution Approach 1:
An insulating member is introduced as an intermediary between the conductive pin head portion and the battery cell terminals. This insulating member extends beyond the pin head portion to provide electrical insulation, allowing the pin head to maintain contact reliability while preventing short circuits through the insulating barrier.
Solution Approach 2:
The charge/discharge pin is segmented into distinct functional portions: a conductive pin head portion for electrical contact and an insulating member portion for electrical isolation. This segmentation allows each portion to perform its specific function without interfering with the other, resolving the contradiction between contact reliability and short circuit prevention.
2Reliability
If the insulating member is made longer to prevent short circuit, then the safety is improved, but the device complexity increases
Solution Approach 1:
The insulating member is merged with the pin structure as an integrated component rather than a separate attachment. The insulating member and pin head portion form a unified charge/discharge pin assembly, simplifying the overall device structure while maintaining short circuit prevention functionality.
Solution Approach 2:
The insulating member serves multiple functions simultaneously: it provides electrical insulation to prevent short circuits, maintains structural integrity of the pin assembly, and guides the pin's positioning during insertion. This multi-functionality reduces the need for additional separate components.
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
Prevents short circuits during charging and discharging, improving productivity by reducing the occurrence of defective battery cells.
Implementation Method 1
the insulating member is made of elastic materials like polyamide, polyurethane, or polyester
Data Source
AI summary
Disclosed are a battery cell charge/discharge device, a battery cell produced using the same, and a battery pack and a vehicle including the battery cell. A battery cell charge/discharge device according to an embodiment of the present disclosure, which is a device for charging and discharging a battery cell during an activation process of the battery cell, includes a charge/discharge member contacting the battery cell to charge and discharge the battery cell; a power supply member connected to the charge/discharge member and supplying power to the charge/discharge member; and an insulating member surrounding the charge/discharge member and varying in length during charge/discharge of the battery cell.