Battery Pairing by SOC and SOH Matching for Swap Stations
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Solution Overview
Problem
The challenge of managing and pairing batteries at battery swapping stations to ensure optimal performance and efficiency due to varying states of charge and health among multiple spare batteries is not adequately addressed by existing technologies.
Innovation Solution
A battery pairing apparatus and method that includes a communication unit, index value determining unit, and battery determining unit to compare performance indexes such as SOC, SOH, and deterioration rate, prioritizing pairing based on these values to match batteries with similar performance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple spare batteries are used at battery swapping stations, then battery availability and swapping speed are improved, but battery management complexity and efficiency loss due to varying states increase
Solution Approach 1:
The patent segments the battery management task by introducing a dedicated battery pairing apparatus that operates independently from the main battery swapping system. This apparatus specifically handles the pairing and matching of spare batteries, dividing the overall management complexity into specialized sub-tasks that can be handled by dedicated components.
Solution Approach 2:
The battery pairing apparatus acts as an intermediary between the multiple spare batteries and the battery swapping station. It receives battery information from various sources, processes this information through index value determination, and outputs paired battery recommendations, thereby mediating the complexity of managing multiple batteries with varying states.
2Quantity of substance
If spare batteries with different states (SOC, SOH) are used, then battery availability is improved, but output and capacity efficiency are limited
Solution Approach 1:
The patent transforms the raw battery parameters (SOC, SOH, capacity, etc.) into standardized index values that can be systematically compared. The index value determining unit processes multiple battery parameters and converts them into comparable indices, enabling the system to evaluate and pair batteries based on their actual performance characteristics rather than raw individual parameters.
Solution Approach 2:
The patent creates homogeneity in battery pairing by matching batteries with similar index values. The battery determining unit pairs batteries that have comparable performance characteristics, ensuring that paired batteries have similar output and capacity efficiencies. This homogeneous pairing optimizes the overall system performance while maintaining high battery availability.
3Loss of time
If rapid charging is implemented to reduce charging time, then battery swapping efficiency is improved, but battery deterioration accelerates
Solution Approach 1:
The patent performs preliminary pairing and assessment of spare batteries before they are needed for swapping. The battery pairing apparatus continuously monitors and evaluates battery states, pre-establishing optimal pairings so that when a swapping event occurs, the system can immediately provide pre-matched batteries without requiring rapid charging cycles. This advance preparation reduces the need for frequent rapid charging.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring battery index values and pairing performance. The battery determining unit uses this feedback to adjust pairing strategies, preferring to pair batteries with similar remaining capacities and health states, which reduces the frequency and intensity of rapid charging operations needed to maintain battery availability.
Data Source
AI summary
Discussed is a pairing apparatus that can include a communication unit configured to receive battery information for a plurality of batteries; an index value determining unit configured to determine an index value for a plurality of performance indexes preset for each of the plurality of batteries, based on the battery information to provide a plurality of index values; and a battery determining unit configured to compare the plurality of index values determined for the plurality of batteries and pair corresponding batteries among the plurality of batteries according to a comparison result of the plurality of index values.