Battery Probe Alignment for Variable Terminal Charging Fixtures
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Solution Overview
Problem
Existing secondary battery chargers/dischargers struggle to efficiently charge and discharge batteries with varying terminal positions and sizes, leading to inadequate contact and potential damage due to misalignment of current and temperature probes.
Innovation Solution
A secondary battery charging and discharging device with adjustable measurement parts and drivers to accommodate various battery designs, including current and temperature probes positioned within the battery width, and a vacuum hopper to manage gas, ensuring accurate contact and temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed charger/discharger structure is used, then the device is simple to manufacture, but it cannot accommodate secondary batteries with various terminal positions
Solution Approach 1:
The probe pin is made movable along the length direction of the tray through a driving mechanism, allowing it to dynamically adjust its position to contact terminals at different locations on various battery models, transforming a static structure into a dynamic one that adapts to different configurations
Solution Approach 2:
The charger/discharger is designed with a universal probe pin system that can serve multiple battery types with different terminal positions through a single adjustable mechanism, eliminating the need for multiple dedicated fixtures for different battery models
2Ease of operation
If the probe pin position is fixed, then the device structure is simple, but the probe pin cannot contact terminals at various positions of different battery models
Solution Approach 1:
The probe pin is equipped with a driving mechanism that enables it to move along the length direction of the tray, allowing the probe to dynamically position itself to contact terminals at various locations on different battery models, transforming a static structure into a dynamic one that adapts to different configurations
Solution Approach 2:
The driving mechanism pre-positions the probe pin at different locations along the tray length direction before charging operations begin, allowing the system to be prepared in advance for different battery terminal positions without requiring complex real-time adjustments during operation
3Measurement precision
If current probe and temperature probe are positioned close together, then the device structure is compact, but accurate temperature measurement becomes difficult due to interference from current flow
Solution Approach 1:
The temperature probe is positioned at a specific distance from the current probe, creating a localized measurement zone that is sufficiently separated from the high-current path to avoid thermal interference, while still maintaining proximity for effective temperature monitoring of the battery terminal area
Solution Approach 2:
The temperature probe serves as an intermediary measurement element that indirectly monitors battery temperature by measuring the temperature in the vicinity of the terminal, rather than requiring direct contact with the current-carrying components, thus avoiding measurement interference
Data Source
AI summary
A secondary battery charging and discharging device includes: a first measurement part including: a first base portion; a first current probe joined to the first base portion, and to contact a first terminal of a secondary battery; and a temperature probe joined to the first base portion, spaced from the first current probe at an interval, and to measure a temperature of the secondary battery; and a second measurement part facing the first measurement part with the secondary battery therebetween, and including: a second base portion; and a second current probe joined to the second base portion, and to contact a second terminal of the secondary battery. The first current probe and the second current probe are to charge the secondary battery.