Power Supply Control Apparatus Switching Battery Pathways
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Solution Overview
Problem
Conventional power supply systems that use a high-efficiency battery and a lower-efficiency battery to power accessory devices via a power converter can lead to increased deterioration of the lower-efficiency battery due to excessive charge/discharge, especially when the accessory device's power consumption exceeds the converter's output capacity.
Innovation Solution
A power supply control apparatus that switches between two states: one where power is supplied from the high-efficiency battery through a converter and another where power is directly supplied from the high-efficiency battery to the accessory device without the converter, disconnecting the lower-efficiency battery, thus preventing excessive charge/discharge and deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If power is supplied from the second battery via a power converter to the accessory device, then charge/discharge efficiency is improved, but device complexity increases due to the converter requirement
Solution Approach 1:
The system dynamically switches between two power supply configurations: (1) using the power converter for normal operation to maintain high charge/discharge efficiency, and (2) directly connecting the second battery to the accessory device when power consumption exceeds converter capacity. This dynamic reconfiguration resolves the contradiction by adapting the system structure to operational conditions.
Solution Approach 2:
The power supply system is segmented into two independent pathways: a converter-based pathway for efficient power conversion and a direct connection pathway for high-power scenarios. This segmentation allows each pathway to operate optimally within its designated range, resolving the efficiency-complexity contradiction.
2Reliability
If the accessory device power consumption exceeds the power converter output capacity, then power supply reliability is improved, but the first battery deterioration increases due to excessive charge/discharge
Solution Approach 1:
The control apparatus acts as an intermediary that monitors power consumption and automatically switches between power supply configurations. When power consumption exceeds converter capacity, it transitions to direct battery connection, protecting the first battery from excessive charge/discharge while ensuring reliable power supply to the accessory device.
Solution Approach 2:
The system employs feedback control by continuously monitoring accessory device power consumption and adjusting the power supply configuration accordingly. This feedback mechanism ensures that the first battery is protected from deterioration while maintaining reliable power supply under varying load conditions.
Data Source
AI summary
A power supply control apparatus controls supply of power to an accessory device connected to a first battery. The power supply control apparatus includes a power supply controller that switches a power supply state from a first state to a second state. In the first state, power is supplied to the accessory device via a power converter from a second battery that has a charge/discharge efficiency higher than the first battery. In the second state, the power is supplied from the second battery to the accessory device not via the power converter with the first battery disconnected from the accessory device.