Multi-Battery Switch Control for Selective Charging
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Solution Overview
Problem
Electronic devices with multiple batteries lack the ability to monitor and manage individual battery states, leading to inefficient charging and power management, preventing selective battery use or charging based on user preference and preventing power transfer among batteries.
Innovation Solution
An electronic device with a power management integrated circuit (PMIC), battery charging circuit, booster circuit, and control circuit that allows for selective battery connection and charging, enabling monitoring of battery states and power transfer among batteries through switch control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple batteries are connected in parallel to expand charging capacity, then the full charging capacity is expanded, but individual battery monitoring and selective charging become impossible
Solution Approach 1:
The patent divides the battery system into independently controllable segments by providing separate switch control circuits for each battery. Each battery can be individually connected or disconnected from the charging circuit, enabling selective charging while maintaining the ability to expand total charging capacity through parallel connection of multiple batteries.
2Quantity of substance
If multiple batteries are connected in parallel structure, then full charging capacity is expanded, but selective battery use or charging becomes impossible
Solution Approach 1:
The patent implements dynamic control of battery connections through switch control circuits that can change the connection state of each battery based on operational requirements. This allows the system to dynamically select which batteries are active for charging or power supply, enabling flexible battery management while maintaining expanded charging capacity.
3Ease of repair
If main battery is disconnected to change battery, then battery replacement is possible, but electronic device power turns off
Solution Approach 1:
The patent enables preliminary charging of replacement batteries while the device is operating on the main battery. The auxiliary battery can be charged in advance through the charging circuit, so when the main battery needs replacement, the device can continue operating without interruption from the pre-charged auxiliary battery.
4Ease of operation
If individual battery monitoring is implemented, then selective battery control becomes possible, but system complexity increases
Solution Approach 1:
The patent implements a monitoring system where the charging control circuit performs multiple functions: it monitors the charge state of each battery, controls the switching of battery connections, and manages the charging process. This multi-functional approach enables individual battery monitoring without proportionally increasing system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables selective battery use and charging based on user preference, allowing for efficient power management and simultaneous charging of external devices while maintaining device functionality.
Implementation Method 1
change a first voltage generated by the first battery to a second voltage that is higher than the first voltage
Implementation Method 2
transmit a second power based on a third voltage generated by the second battery to the power management integrated circuit
Data Source
AI summary
An electronic device includes a housing having a first and second battery, a power management integrated circuit, a battery charging circuit, and a booster circuit. The housing also includes a first switch connected with the first battery, a second switch connected with the second battery, and a control circuit. The control circuit provides, one of a first state where the first battery is connected with the PMIC and the battery charging circuit, a second state where the first battery is connected with the booster circuit and the battery charging circuit, a third state where the first battery forms an open circuit, a fourth state where the second battery is connected with the PMIC and the battery charging circuit, a fifth state where the second battery is connected with the booster circuit and the battery charging circuit, and a sixth state where the second battery forms an open circuit.