Integrated Automatic Transfer Switch for EV Charging Power Switching
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Solution Overview
Problem
Current automatic transfer switch (ATS) solutions for power supply systems, especially in conjunction with energy storage systems and charging piles, lack integration of switch functions for power input in buildings, leading to inefficiencies and increased complexity.
Innovation Solution
An automatic transfer switch system that includes multiple switch units, a sampling unit, and a control unit to manage power flow between energy sources, loads, and electric vehicles, integrating charging functions and simplifying the system architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If charging piles are added to energy storage systems to enhance product competitiveness, then product functionality and market adaptability are improved, but system complexity and installation difficulty increase
Solution Approach 1:
The patent combines the ATS (Automatic Transfer Switch) and charging pile into a single integrated device. The ATS includes switch units that can connect/disconnect power grid connections, while the charging pile provides EV charging functionality. These functions are merged into one device with shared components such as the housing, control unit, and communication interfaces, thereby reducing overall system complexity while maintaining both power transfer and charging capabilities.
Solution Approach 2:
The integrated device performs multiple functions: it acts as both an Automatic Transfer Switch for power grid connection management and a charging pile for electric vehicle charging. The switch units can configure different connection states to enable power grid connection, disconnection, or charging operations, allowing a single device to serve multiple purposes and reduce the need for separate standalone units.
2Reliability
If multiple switch units and control components are integrated into the ATS, then switching reliability and power supply stability are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The ATS is divided into multiple independent switch units, where each switch unit can independently control specific connection states (power grid connection, charging connection, etc.). This segmentation allows for modular manufacturing and assembly, where each switch unit can be tested and manufactured separately before being integrated into the final device, thereby managing manufacturing complexity while achieving reliable multi-state switching functionality.
3Ease of operation
If the ATS integrates charging pile functions, then cable connections and installation complexity are reduced, but the difficulty of detecting and measuring system states increases
Solution Approach 1:
The control unit continuously monitors the connection states of the switch units and provides feedback to adjust the switching operations. The sampling unit detects parameters such as voltage and current to determine the current operational state (power grid connected, charging in progress, disconnected, etc.), and this feedback information is used by the control unit to make real-time switching decisions, simplifying installation while enabling accurate state detection through automated monitoring.
Data Source
AI summary
The application discloses an automatic transfer switch and a power supply system. The automatic transfer switch includes: a first switch unit having a first end connected to a first device through a converter port, and a second end electrically connected to a power grid through a power grid port; a second switch unit having a first end connected to a second device through an electric vehicle port and a charging/discharging circuit unit, and a second end electrically connected to the second end of the first switch unit; a third switch unit, having a first end electrically connected to the power grid through the power grid port, and a second end electrically connected to a load through a load port; a sampling unit; and a control unit connected to the sampling unit.