Parallel Battery Pack Control for Stable Charge Display Switching
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Solution Overview
Problem
In existing battery management systems, switching from charging to discharging mode can cause unnatural changes in the total charging amount notified to the user, leading to discomfort.
Innovation Solution
A battery management apparatus that acquires battery pack information to select and control the charging and discharging of battery packs, ensuring continuity of the charging mode's selected combination during mode switching to stabilize the total charging amount displayed to the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery pack combination is selected based on charging mode and discharging mode separately, then the battery management system can optimize charging and discharging operations, but the total charging amount notified to the user may unnaturally change when switching modes, making the user feel uncomfortable
Solution Approach 1:
The control section stores the battery pack combination determined in charging mode as a candidate combination before mode switching occurs. When switching from charging mode to discharging mode, this pre-stored candidate combination is automatically selected, preventing unnatural changes in the total charging amount notification and eliminating user discomfort.
2Adaptability or versatility
If the battery pack combination changes when switching from charging mode to discharging mode, then the system can optimize for the new mode, but the total charging amount and travelable distance notifications change unnaturally
Solution Approach 1:
The system applies preliminary anti-action by storing the charging mode's battery pack combination as a candidate combination before mode switching. This pre-prepared combination prevents the unnatural change in total charging amount notification that would otherwise occur when the combination is reselected for discharging mode, thereby maintaining information consistency.
3Productivity
If a new battery pack combination is selected for discharging mode, then the system can optimize discharging performance, but the travelable distance notification may become unnatural
Solution Approach 1:
The control section stores the battery pack combination determined in charging mode as a candidate combination before mode switching. When switching to discharging mode, this pre-stored combination is selected, ensuring that the travelable distance notification remains stable and natural, while still allowing the system to optimize discharging operations through other control parameters.
Data Source
AI summary
A battery management apparatus mounted in a vehicle, and configured to manage a plurality of battery packs connected in parallel, the battery management apparatus including an acquiring section configured to acquire battery pack information representing a charging amount and a voltage from each of the plurality of battery packs; a selection section configured to select a battery pack to be charged or a battery pack to be discharged from among the plurality of battery packs based on the battery pack information, and a control section configured to charge the battery pack to be charged in a charging mode and discharge the battery pack to be discharged in a discharging mode. When a mode is switched from the charging mode to the discharging mode, the control section performs a control such that the battery pack to be charged is used as it is as the battery pack to be discharged.