Multi-Mode Power Conversion Circuit for Adaptive Battery Charging
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Solution Overview
Problem
Existing battery charging systems only support a single voltage mode, which can lead to inefficient or ineffective charging if the current is too small or potentially damage the battery if too large, as different batteries require varying charging currents.
Innovation Solution
A power conversion circuit and charging apparatus that includes a digital core processing element, battery information detection, and power conversion elements to dynamically adjust charging modes based on the battery's supported current, allowing for multiple charging modes such as high-voltage direct-charge, low-voltage direct-charge, and buck circuit modes to optimize charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single voltage mode is used in the charging system, then the device complexity is reduced, but the adaptability to different battery charging requirements deteriorates
Solution Approach 1:
The charging system dynamically switches between different charging modes (first charging mode with first charging current, second charging mode with second charging current) based on battery requirements. The controller adjusts the charging current in real-time by selecting different working modes, transforming a static single-mode system into a dynamic multi-mode system that adapts to varying battery charging needs.
Solution Approach 2:
The system changes the charging current parameter by switching between different charging modes. In the first charging mode, a first charging current is provided, while in the second charging mode, a second charging current is provided. This parameter change allows the system to adapt to different battery requirements without increasing structural complexity.
2Productivity
If charging current is increased to improve charging efficiency, then the charging rate is improved, but the risk of battery damage increases
Solution Approach 1:
The controller monitors battery charging status and dynamically adjusts the charging current based on feedback. The system switches between different charging modes according to battery requirements, ensuring that the charging current remains within safe limits while optimizing charging efficiency. This feedback mechanism prevents excessive current from damaging the battery.
Solution Approach 2:
The charging system dynamically adjusts the charging current by switching between different charging modes. Rather than using a fixed high current that could damage the battery, the system adaptively changes the current level based on real-time battery status, thereby improving charging rate while maintaining battery safety.
3Reliability
If charging current is decreased to ensure battery safety, then the reliability is improved, but the charging efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts the charging current by switching between different charging modes based on battery requirements. Rather than using a consistently low current that would reduce charging efficiency, the system adaptively increases or decreases the current level, thereby maintaining battery safety while optimizing charging efficiency at different stages.
Solution Approach 2:
The controller changes the charging current parameter by switching between charging modes. In the first charging mode, a first charging current is used, and in the second charging mode, a second charging current is used. This parameter change allows the system to achieve both battery safety and charging efficiency by selecting appropriate current levels for different charging stages.
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
The system effectively increases battery charging rates by selecting the appropriate charging mode based on the battery's current requirements, ensuring efficient and safe charging by matching the charging current and voltage to the battery's specifications, thereby improving charging efficiency and preventing damage.
Implementation Method 1
a first capacitor, a first switch, a second switch and a third switch form a first charging mode circuit, wherein a first end of the first capacitor is connected to a power supply through the first switch, a second end of the first capacitor is separately connected to a positive end of a battery and a first end of a second capacitor through the second switch, a third end of the second capacitor is connected to a negative end of the battery, a fourth end of the second capacitor is grounded through the third switch
Implementation Method 2
a fourth switch, a fifth switch, a sixth switch and an inductor form a second charging mode circuit, wherein a first end of the inductor is connected to the power supply through the fourth switch, a second end of the inductor is separately connected to a positive end of the battery and a first end of a third capacitor through the fifth switch, a third end of the third capacitor is connected to a negative end of the battery, a fourth end of the third capacitor is grounded through the sixth switch
Data Source
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AI summary
A power conversion circuit and a charging apparatus are disclosed, to support a plurality of charging modes and increase a battery charging rate. The circuit includes: A first end of a first switch element is coupled and connected to an input power supply through a first external connection end of the power conversion circuit, a second end of the first switch element is separately coupled to a first end of a first energy storage element and a first end of a second switch element, a second end of the first energy storage element is separately coupled to a first end of a third switch element and a first end of a fourth switch element, a second end of the second switch element is coupled and connected to a battery through a second external connection end of the power conversion circuit, a second end of the fourth switch element is coupled to the second external connection end, a second end of the third switch element is grounded, a first end of a fifth switch element is coupled to the first external connection end, a second end of the fifth switch element is separately coupled to a first end of a second energy storage element and a first end of a sixth switch element, a second end of the second energy storage element is coupled to the second external connection end, and a second end of the sixth switch element is grounded.