Vehicle Drive Control Apparatus Surplus Power Management
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Solution Overview
Problem
Existing vehicle drive systems experience significant power loss due to unnecessary charging and discharging of rechargeable batteries, particularly when surplus power generated by the motor generator is stored in batteries and then used to supply accessories, leading to increased charge/discharge losses.
Innovation Solution
A drive control apparatus that selectively increases the power consumption of accessories when surplus power is generated by the motor generator, prioritizing the use of this power to reduce the amount charged in the rechargeable batteries, thereby minimizing power loss by adjusting the power distribution between the motor generator and the batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If surplus power from the motor generator is charged in the rechargeable battery, then power can be stored for later use, but power loss increases due to charging and discharging cycles
Solution Approach 1:
The control apparatus dynamically adjusts the power consumption of accessories based on the amount of surplus power generated by the motor generator. When surplus power is available, the system increases accessory power consumption to utilize the surplus directly, thereby reducing the need to charge the battery and subsequently discharge it, which reduces power loss from charge/discharge cycles.
Solution Approach 2:
The system changes the operating parameters of accessories (power consumption levels) based on the surplus power conditions. By adjusting power consumption parameters dynamically, the system optimizes the use of surplus power and minimizes unnecessary battery charge/discharge operations, thereby reducing energy loss.
2Loss of energy
If accessories are powered by the motor generator during regenerative braking, then power loss in the battery is reduced, but the power consumption of accessories may not be fully covered
Solution Approach 1:
The control apparatus dynamically adjusts the power consumption parameters of accessories based on the surplus power available from the motor generator. When surplus power is sufficient, accessories are powered directly by the motor generator. When surplus power is insufficient, the system adjusts power consumption levels to match available surplus power, optimizing the balance between reducing power loss and meeting power demands.
Data Source
AI summary
A drive control apparatus is provided for controlling a drive system mounted in a vehicle, where the drive system includes a power generator, at least one rechargeable battery, accessories powered by electrical power supplied from either or both of the least one rechargeable battery and the power generator. In the drive control apparatus, a selector is configured to, during power generation by the power generator, select the power generator as a power source for the accessories in preference to the least one rechargeable battery. A power controller is configured to, if generated power by the power generator exceeds power consumption of the accessories, increase the power consumption of the accessories.