Dual Battery Charging System with Switchable Paths
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Solution Overview
Problem
Existing smartphones with dual batteries cannot charge both the main and secondary batteries simultaneously, limiting user convenience and charging efficiency.
Innovation Solution
A charging system and method that utilizes a switchable charging path based on the inserting state of a backup battery, allowing simultaneous charging of both batteries via a USB connector and integrated charging chips, with a charge controlling unit and LED light set for power level display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If dual batteries are used in smartphones, then battery life is extended, but charging convenience deteriorates because main battery and secondary battery cannot be charged simultaneously
Solution Approach 1:
The patent implements dynamic charging path switching based on the insertion state of the backup battery. When the backup battery is inserted, the system dynamically enables simultaneous charging of both main and secondary batteries through different charging paths. This dynamic adaptation resolves the contradiction by making the charging system flexible rather than fixed, allowing users to charge both batteries at once when needed while maintaining compatibility with single-battery configurations.
Solution Approach 2:
The patent segments the charging system into independent charging paths for the main battery and secondary battery, each controlled by separate charging chips (main charging chip and secondary charging chip). This segmentation allows each battery to be charged independently and simultaneously through its own dedicated path, eliminating the mutual exclusion that previously existed between main and secondary battery charging operations.
2Duration of action of moving object
If dual batteries are used in smartphones, then battery life is extended, but charging efficiency deteriorates due to sequential charging limitations
Solution Approach 1:
The system dynamically adjusts charging operations based on real-time detection of backup battery insertion state. When detected, the system immediately switches to simultaneous dual-battery charging mode, maximizing charging efficiency. This dynamic response eliminates the time waste associated with sequential charging while maintaining system simplicity through automated detection and switching.
Solution Approach 2:
The patent enables continuous useful action by allowing both batteries to charge simultaneously when the backup battery is inserted. Instead of completing one battery's charging before starting the other (sequential action), the system performs parallel charging operations, ensuring that charging utility is maximized throughout the entire charging process without idle waiting time.
3Productivity
If simultaneous charging of main and secondary batteries is implemented, then charging efficiency is improved, but device complexity increases
Solution Approach 1:
The patent reduces complexity through segmentation by providing each battery with its own dedicated charging path and control chip. The main battery has its own main charging chip and charging path, while the secondary battery has its own secondary charging chip and charging path. This modular segmentation isolates control logic, making the system easier to manage despite handling multiple batteries, as each charging operation can be controlled independently without interfering with the other.
Solution Approach 2:
The patent introduces a switch component as an intermediary element that automatically routes charging current based on the backup battery's insertion state. This intermediary simplifies the control logic by providing a clear, automated decision-making mechanism: when the backup battery is inserted, the switch enables dual-battery charging; when not inserted, it defaults to single-battery charging. This intermediary abstracts the complexity of path selection from the overall system control.
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 simultaneous charging of both batteries, improving charging efficiency and extending battery life by allowing the system to adapt charging paths based on the backup battery's state, thereby meeting user demands for longer battery life.
Implementation Method 1
the charge controlling unit further comprising an LED light set configured to display current power level information of the secondary battery
Data Source
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AI summary
A charging system, a charging method, and a mobile terminal based on dual batteries are provided. The charging system based on dual batteries includes a main board and a backup battery; the main board has a main charging chip and a main battery arranged thereon; the backup battery has a secondary charging chip and a secondary battery arranged thereon. The main board further includes a USB connector cocnfigured to connect to a charger, and a switch configured to switch to a corresponding charging path based on an inserting state of the backup battery. When the backup battery is inserted, the main charging chip is controlled to charge the main battery, and the secondary charging chip is controlled to charge the secondary battery simultaneously. When the backup battery is pulled out, the main charging chip is controlled to charge the main battery. Therefore, it is possible to achieve the one-to-many solution, charge the main battery and the secondary battery simultaneously, and greatly improve the charging efficiency.