Accessory Battery Power Switching for Camera Circuit Continuity
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Solution Overview
Problem
Existing electronic devices face challenges in efficiently managing power supply when connected to external accessories or devices, particularly in scenarios where battery capacity is low or external power sources are unavailable, leading to potential functionality loss and increased size, weight, or cost.
Innovation Solution
An electronic device system that includes a first battery, a power supply circuit, and a processor, which controls power distribution from the first battery to internal and external circuits, and from a second battery when connected to an accessory, ensuring continuous operation and reducing power consumption by utilizing multiple power sources efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is supplied from a single internal battery to all circuits, then the device can operate independently, but the device size and weight increase
Solution Approach 1:
The power supply system is segmented into multiple independent power sources: an internal battery for the electronic device and an external battery for the connection device. This segmentation allows each battery to be optimized for its specific function and reduces the total capacity required in each unit, thereby reducing overall weight while maintaining operational independence through coordinated power management.
2Duration of action of moving object
If a large capacity battery is used to ensure continuous operation, then operational duration is extended, but device size increases
Solution Approach 1:
The system merges two separate power sources (internal and external batteries) into a coordinated power supply system. The electronic device and connection device work together to provide combined power capacity, extending operational duration without requiring a single large-capacity battery in the electronic device, thus avoiding increased device volume.
3Device complexity
If power management circuitry is simplified, then device complexity is reduced, but power distribution efficiency decreases
Solution Approach 1:
The connection device autonomously manages its own power supply from the external battery and independently controls power distribution to its own circuits. This self-service approach eliminates the need for complex centralized power management in the electronic device, reducing device complexity while maintaining efficient power distribution through decentralized control.
Data Source
AI summary
A digital camera includes a first battery, a power supply circuit, and a power supply management unit, and an accessory having second batteries and a communication unit is connectable to the digital camera. The power supply management unit performs control to supply power to the communication unit from the first battery and to supply power to the power supply circuit from any one of the second batteries, in a state in which the accessory is connected, and performs control to supply power to the power supply circuit from the first battery in a state in which the accessory is not connected.