Lithium-Ion Battery Detection Device with Segmented Electrode Housing
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Solution Overview
Problem
Current detection devices for lithium-ion batteries face challenges in testing non-packaging components, particularly electrode sheets, due to issues like floatation, small testing area, and high costs, leading to inconvenient and inaccurate results under various experimental conditions.
Innovation Solution
A detection device with an insulative housing and separator to securely hold and separate positive and negative electrode sheets, using conductive fasteners for fixation and detection holes for gas and temperature analysis, allowing flexible testing of various electrolytes and electrode sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electrode sheets are placed in sealed beakers for testing, then observation of electrode state during charging/discharging is enabled, but floatation of the electrode sheet occurs and testing accuracy deteriorates
Solution Approach 1:
The sealed beaker is divided into separate compartments: an electrode receiving chamber for holding the electrode sheets and an electrolyte chamber for containing the electrolyte. This segmentation prevents electrode floatation while maintaining the ability to observe electrode state during charging/discharging, thereby improving both operational convenience and measurement precision.
Solution Approach 2:
A porous plate is introduced as an intermediary component between the electrode receiving chamber and the electrolyte chamber. This porous plate allows ion transport while preventing electrode floatation, enabling accurate testing without compromising operational convenience.
2Ease of operation
If small area electrode sheets (≈1 cm2) are selected for testing, then connection to power line becomes difficult, but testing convenience is reduced and testing accuracy deteriorates
Solution Approach 1:
The electrode receiving chamber is designed with pre-configured power line connection interfaces and sufficient space to accommodate larger area electrode sheets. This preliminary preparation eliminates the need to use small area electrodes, allowing convenient power line connection while maintaining accurate gas and heat analysis capabilities.
3Adaptability or versatility
If battery clamp and sampling needle are used for testing after packaging, then testing can be performed on packaged batteries, but cost increases and flexibility for various experimental conditions is reduced
Solution Approach 1:
The sealed beaker device is designed as a universal testing apparatus that can accommodate different electrode sheet sizes, types, and configurations. The standardized electrode receiving chamber and power line connection interfaces enable testing under various experimental conditions without requiring additional specialized equipment, thereby improving adaptability while maintaining cost-effectiveness.
Data Source
AI summary
The present disclosure provides a detection device for lithium-ion battery, which comprises an insulative housing having a receiving chamber; an insulative separator positioned between the positive electrode sheet and the negative electrode sheet when the positive electrode sheet and the negative electrode sheet are received in the receiving chamber; a positive electrode sheet conductive fastener passing through the insulative housing and fixedly connected to a positive electrode current collector at a positive electrode current collector non-film-coating region; a negative electrode sheet conductive fastener passing through the insulative housing and fixedly connected to a negative electrode current collector at a negative electrode current collector non-film-coating region; an insulative cover engaged with the insulative housing and the insulative separator; a positive electrode region detection hole communicated to the positive electrode sheet gas region; and a negative electrode region detection hole communicated to the negative electrode sheet gas region.