Vehicle Battery Charging Control for Auxiliary-to-External Handover
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Solution Overview
Problem
Existing vehicle charging systems face interference between auxiliary and external charging sequences, leading to delays in starting external charging due to lengthy write processing when auxiliary charging is ended, causing user inconvenience.
Innovation Solution
A battery charging control device that includes a control device to determine external charging conditions, suspend auxiliary charging with write processing, and initiate external charging without write processing, ensuring timely and efficient charging sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If write processing is performed when auxiliary charging is ended, then information on the auxiliary charging device is properly stored, but the time until external charging is started becomes long
Solution Approach 1:
The patent applies preliminary action by storing information in a temporary storage device during auxiliary charging operation before it is needed. When auxiliary charging is ended, the control device determines whether external charging should start, and only performs write processing to permanent storage when necessary, rather than always performing write processing upon ending auxiliary charging.
Solution Approach 2:
The patent changes the storage parameter from permanent storage to temporary storage during auxiliary charging operation, and only transitions to permanent storage when external charging is not starting. This parameter change in storage location and timing resolves the contradiction between reliable information storage and minimizing delay.
2Quantity of substance
If auxiliary charging and external charging control sequences are both enabled, then charged amounts of both batteries can be secured, but the control sequences may interfere with each other
Solution Approach 1:
The control device acts as an intermediary between auxiliary charging and external charging control sequences. It monitors conditions for both charging types and determines the appropriate sequence execution, preventing interference by coordinating when each charging mode operates based on battery charge levels and charging requirements.
Data Source
AI summary
A battery charging control device for a vehicle is provided, which includes a motor, a high-voltage battery, a low-voltage battery, a charging connecting device, an auxiliary charging device, a temporary storage device, a storage device, a write processing device which performs write processing for writing and storing in the storage device information stored in the temporary storage device, and a control device which includes a determination module and a charging control module. The control module suspends the auxiliary charging device after causing the write processing device to perform the write processing, when an auxiliary charging ending condition is satisfied without an external charging starting condition being satisfied, and issues an external charging start command to a charger after suspending the auxiliary charging device and inhibits the write processing by the write processing device, when the auxiliary charging ending condition is satisfied by the external charging starting condition being satisfied.