Charge Discharge Control Device for Uneven Battery Capacity
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Solution Overview
Problem
Existing battery systems with multiple batteries connected in parallel face inefficiencies in battery exchange at stations, as all batteries typically need to be replaced simultaneously, which is time-consuming.
Innovation Solution
A charge and discharge control device comprising a remaining capacity acquisition component, a required power calculator, a target remaining capacity generator, and a charge and discharge controller, which adjusts the remaining capacity of each battery to allow for uneven distribution, enabling efficient replacement of only low-capacity batteries with charged ones at the station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all batteries are replaced simultaneously at the station, then the vehicle can maintain consistent performance, but the battery exchange time increases
Solution Approach 1:
The patent applies local quality by allowing different batteries to have different remaining capacity levels rather than requiring uniform capacity across all batteries. The control device identifies specific batteries with low remaining capacity and targets only those for replacement, while other batteries maintain their current state. This differentiated approach reduces the number of batteries needing replacement while maintaining overall system reliability.
Solution Approach 2:
The patent implements preliminary action by having the control device continuously monitor and manage battery capacities during operation, preparing the battery system for efficient exchange. The device calculates required power, determines target remaining capacities, and controls charge/discharge operations in advance, so that when the vehicle reaches the station, only the necessary batteries need replacement rather than all batteries simultaneously.
2Quantity of substance
If multiple batteries are connected in parallel, then the overall battery capacity increases, but the complexity of managing individual battery capacities increases
Solution Approach 1:
The patent applies self-service by implementing an automated control device that independently monitors, calculates, and manages the charge/discharge operations of multiple batteries. The device automatically acquires remaining capacity data, calculates required power based on vehicle conditions, determines optimal target capacities for each battery, and executes charge/discharge control without manual intervention. This automation simplifies the management of multiple batteries despite the increased complexity of individual capacity tracking.
Solution Approach 2:
The patent implements feedback mechanisms where the control device continuously acquires remaining capacity information from each battery, compares it against target values, and adjusts charge/discharge operations accordingly. The device uses feedback loops to monitor the state of each battery and make real-time adjustments to maintain optimal capacity distribution across the parallel-connected battery system.
Data Source
AI summary
A charge and discharge control device (30) controls the charging and discharging of a plurality of capacitors (11) configure to be removably connected in parallel to a vehicle (20). A receiver (34) acquires the remaining capacity of each of the capacitors (11). A required power calculator (33) calculates the amount of power required to reach a station (100) where the exchange of battery packs (10) including the capacitors (11) is performed, from position information about the station (100) and the current location of the vehicle (20). A target remaining capacity generator (35) calculates the target remaining capacity of each of the storage units (11) upon arrival at the station (100) from the required power amount calculated by the required power calculator (33) and sum of the remaining capacity of each of the storage units (11) acquired by the remaining capacity receiver (34). A charge and discharge controller (36) performs charging and discharging among the storage units (11) so that the target remaining capacity calculated by the target remaining capacity generator (35) will be attained.