Switchable Battery Circuit for Fast Charging Adaptability
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Solution Overview
Problem
Existing devices struggle to accommodate both normal and fast charging schemes in a single battery supply circuit, limiting scalability and adaptability.
Innovation Solution
A battery supply circuit with a first cell and a second cell that can switch between parallel and series configurations, coupled with a charging interface and integrated circuits to manage voltage and current for different charging modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single battery supply circuit is used, then device complexity is reduced, but adaptability to multiple charging schemes deteriorates
Solution Approach 1:
The battery supply circuit dynamically switches between series and parallel configurations of battery cells based on the detected charging scheme. The switching control unit changes the connection state of battery cells from series to parallel or vice versa according to real-time charging requirements, enabling a single circuit to adapt to multiple charging modes without increasing overall device complexity
Solution Approach 2:
The battery supply circuit is designed with multi-functional capability to support both fast charging and normal charging schemes. By incorporating switchable series-parallel configurations, the same circuit structure can accommodate different charging powers and voltages, making the circuit universal for multiple charging scenarios rather than requiring separate dedicated circuits
2Loss of time
If fast charging scheme is applied, then charging time is reduced, but heat generation increases
Solution Approach 1:
The system dynamically adjusts the battery cell configuration from series to parallel during fast charging based on temperature and charging state. When temperature rises or charging approaches completion, the switching control unit transitions to parallel connection, which distributes current across multiple cells, reducing heat generation per cell while maintaining fast charging capability
Solution Approach 2:
The invention changes the electrical parameters of the battery supply circuit by switching between series and parallel configurations. During fast charging, the system transitions from high-voltage series connection to lower-voltage parallel connection, changing the operating parameters to reduce current density and heat generation in individual cells while maintaining overall charging speed
3Productivity
If high charging power is applied, then charging speed is improved, but battery performance degradation accelerates
Solution Approach 1:
The switching control unit dynamically changes the battery cell connection configuration from series to parallel as charging progresses. This dynamic adjustment allows the system to maintain high charging speed initially with series connection, then transition to parallel connection to distribute stress across more cells, reducing performance degradation and extending battery life
Solution Approach 2:
The system performs preliminary switching to parallel configuration before high current charging begins or when temperature thresholds are approached. This preliminary action prevents excessive stress on individual battery cells, proactively protecting battery performance while still enabling fast charging operation
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 efficient switching between normal and fast charging modes, reducing charging time and heat generation while maintaining battery performance and extending battery life.
Implementation Method 1
converting the output voltage, and applying the converted output voltage on both ends of the first cell and the second cell coupled in parallel
Implementation Method 2
directly applying the output voltage and the output current on both ends of the first cell and the second cell coupled in series
Data Source
AI summary
Provided is a device to be charged. The device includes: a battery supply circuit, including first and second cells configured to switch between being coupled in parallel with each other and being coupled in series with each other; a charging interface, through which the device receives output voltage and current of an adapter; a first charging circuit coupled between the charging interface and the battery supply circuit, and configured to convert the output voltage and apply the converted output voltage on both ends of the first and second cells coupled in parallel; and a second charging circuit coupled between the charging interface and the battery supply circuit, and configured to directly apply the output voltage and current on both ends of the first and second cells coupled in series, or directly apply the output voltage and current on both ends of the first and second cells coupled in parallel.