Dual Battery Charging Device with Boost Charge Circuit
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Solution Overview
Problem
Conventional mobile chargers/dischargers have a lower volume energy density than secondary batteries, leading to increased size and limited usage, particularly in emergency situations where rapid charging is needed, causing inconvenience due to separate charging requirements.
Innovation Solution
A charging device with a first battery charged at a slower rate and a second battery charged at a faster rate, incorporating switches, voltage detection circuits, and a switch control circuit to manage power distribution and prioritize charging based on battery voltage and charger presence, allowing for efficient boost charging and increased capacity without increasing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the capacity of the secondary battery is increased to extend usage time, then the usage duration is improved, but the charging time increases significantly
Solution Approach 1:
The patent divides the battery system into two separate batteries: a main body battery for extended usage duration and a boost charge battery for rapid charging. This segmentation allows each battery to be optimized for its specific function, resolving the contradiction between usage duration and charging time.
2Quantity of substance
If a mobile charger/discharger is designed with sufficient charge capacity for full charging, then the charge capacity is improved, but the device size increases
Solution Approach 1:
The charging system is segmented into two separate batteries with distinct functions. The boost charge battery provides sufficient charge capacity for rapid top-up without requiring the large volume needed for full charging, thus resolving the contradiction between charge capacity and device size.
Solution Approach 2:
The boost charge battery is designed to provide partial charging (boost charge) rather than full charging capacity. This partial action approach delivers sufficient power for rapid top-up in emergency situations without requiring the excessive volume needed for complete battery replacement.
3Volume of moving object
If the mobile charger/discharger is downsized for portability, then the device size is reduced, but the usage becomes limited to emergency use only
Solution Approach 1:
The system achieves multi-functionality by combining two batteries with different capacities and charging rates. The main body battery provides extended usage for normal operations, while the boost charge battery enables rapid top-up in emergency situations, making the system adaptable to both everyday and emergency usage scenarios.
Data Source
AI summary
A charging device that includes a first battery charged at a first rate and a second battery that is charged at a second rate, which is faster than the first rate. The charging device includes an interface that receives electric power from a charger; a first switch disposed between the interface and the first battery; a second switch disposed between the second battery and the first battery; a battery voltage detection circuit that detects a voltage of the second battery; a charger detection circuit connected to the interface that detects whether power is being received from the charger; and a switch control circuit that controls the first switch and the second switch based on outputs of the charger detection circuit and the battery voltage detection circuit.