Integrated Charging-Discharging Circuit With PFC and Resonant Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle charging and discharging systems are independent, leading to increased costs and reduced sustainable product supply due to the need for multiple electronic devices and two control chips.
Innovation Solution
A unified charging and discharging circuit with a filtering circuit, a driving circuit, and a generator circuit, including a transformer module, that can operate in both charging and discharging states, forming power factor correction and resonance circuits respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If independent charging system and electrical control system are used, then system reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the charging system and electrical control system into a single integrated circuit that can perform both charging and discharging functions. The circuit includes a bridge arm with switching elements and a control unit that manages both charging from the power grid and discharging to power the motor, eliminating the need for separate independent systems while maintaining functional reliability through unified control.
Solution Approach 2:
The integrated circuit is designed with multi-functionality to serve both charging and discharging operations. The bridge arm structure with controllable switching elements can operate in different modes: rectifying AC to DC for charging, and converting DC to AC for motor driving. The control unit adapts its control strategy based on the operational mode, enabling one device to perform multiple functions that previously required separate systems.
2Adaptability or versatility
If independent charging system and electrical control system are used, then functional independence is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges the charging system and electrical control system into a single integrated circuit, reducing the total component count and assembly requirements. By sharing common components such as the bridge arm structure, switching elements, and control unit, the manufacturing process is simplified and economies of scale are achieved, thereby reducing overall production costs compared to manufacturing two separate independent systems.
Solution Approach 2:
The circuit employs universal components that can serve multiple functions. The bridge arm topology and switching elements are used for both rectification during charging and inversion during discharging. This multi-functional design reduces the variety of unique components needed, simplifying the supply chain and manufacturing processes while maintaining the ability to perform distinct charging and discharging operations.
3Adaptability or versatility
If multiple electronic devices and two control chips are used, then system functionality is improved, but product supply capability deteriorates
Solution Approach 1:
The patent consolidates multiple electronic devices and two control chips into a single integrated circuit with one control unit. This integration reduces the total number of components that need to be manufactured, tested, and assembled, thereby streamlining the production process and improving product supply capability. The unified design eliminates the coordination complexity between multiple devices while preserving all necessary charging and discharging functionalities.
4Device complexity
If unified charging and discharging circuit is used, then device complexity is reduced, but energy transfer efficiency may deteriorate
Solution Approach 1:
The integrated circuit employs dynamic switching elements and control strategies that optimize energy transfer in real-time. The switching elements in the bridge arm can rapidly transition between states to minimize conduction losses, and the control unit dynamically adjusts switching frequencies and duty cycles based on operational conditions. This dynamic control compensates for the potential efficiency losses from integration, maintaining high energy transfer efficiency while achieving circuit simplification.
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 solution integrates the charging and driving functions, reducing circuit costs and improving device utilization, while maintaining efficient energy transfer and conversion.
Implementation Method 1
The transformer circuit is connected to bridge arms of the generator circuit and is connected to one of bridge arms of the driving circuit
Implementation Method 2
When the charging and discharging circuit is in the charging state, the driving circuit forms a power factor correction circuit, and the generator circuit forms a resonance circuit
Implementation Method 3
When the charging and discharging circuit is in the charging state, the driving circuit forms a power factor correction circuit
Data Source
AI summary
The charging and discharging circuit includes a filtering circuit, a driving circuit, and a generator circuit. The generator circuit includes a transformer module. An input of the filtering circuit is configured to receive an input voltage, and an output of the filtering circuit is connected to the driving circuit. The driving circuit and the generator circuit include multiple bridge arms, and each of the multiple bridge arms is connected in parallel. The transformer circuit is connected to bridge arms of the generator circuit and is connected to one of bridge arms of the driving circuit. The charging and discharging circuit has a charging state and a discharging state. When the charging and discharging circuit is in the charging state, the driving circuit forms a power factor correction circuit, and the generator circuit forms a resonance circuit.