Capacitor-buffered emergency power supply change-over switch and charging system

Abstract

The invention discloses a capacitor-buffered emergency power supply change-over switch and a charging system, which adopt a double-pole double-throw mechanical interlocking switch structure, effectively prevent a main power supply and a standby power supply from being conducted at the same time, and improve the safety of the switching process. A super capacitor buffer circuit with the system integration capacity of 10F / 32V provides high instantaneous current at the moment of power supply switching, so that stable voltage transition is realized, and continuous and stable operation of equipment is guaranteed. The switching time of the device is less than or equal to 10ms which is obviously superior to the national standard, the cycle life is more than or equal to 1 million times, and the device is suitable for high-frequency switching scenes. Through various load tests, the system can be quickly switched to a standby power supply under emergency conditions, voltage fluctuation and power failure phenomena are avoided, and the system is widely applied to the fields of electric vehicle charging stations, data centers, industrial control and the like.

Description

Technical Field

[0001] The present invention relates to electrical switch technology, in particular to an emergency power supply transfer switch and a charging system, and aims to improve the stability and reliability of a power system under abnormal conditions. Background Art

[0002] In modern power systems, a stable power supply is crucial. In the event of a power failure or voltage fluctuation, a quick and safe switch to a backup power source can effectively prevent equipment damage or data loss. Traditional power switching methods often suffer from long switching times and unstable transitions, which affect the continuity and stability of power supply. To overcome these shortcomings, the development of a capacitor-buffered emergency power switch is of great significance. Summary of the Invention

[0003] The present invention provides a capacitor-buffered emergency power supply switch and charging system, which mainly includes the following technical innovations: 1. Double-pole double-throw mechanical interlock switch - The switch is designed as a double-pole double-throw type, which can effectively prevent the main power supply and backup power supply from being turned on at the same time, ensuring the safety of the system during the switching process and avoiding accidental short circuits or electrical failures. 2. Supercapacitor buffer circuit - Using a 10F / 32V supercapacitor as a buffer power supply, it can provide instantaneous currents of up to several hundred amperes at the moment of power switching, smoothly transition voltage changes, reduce the system's requirements for power supply quality, and improve the reliability of the overall power system. Technical parameters and innovative effects 1. Switching time - The switching time of this switch is ≤10ms, significantly better than the national standard of ≤50ms. This fast switching performance effectively reduces the risk of electrical equipment performance degradation or data loss caused by power switching, ensuring stable system operation. 2. Cycle life - The device has a cycle life of ≥ 1 million times, ensuring excellent durability and reliability in high-frequency usage scenarios, suitable for various industrial and commercial applications. Experimental results and applications After rigorous testing and verification, this capacitor-buffered emergency power switch has demonstrated excellent performance under various load conditions, rapidly switching to backup power in emergencies without voltage fluctuations or power outages. Furthermore, its high cycle life ensures long-term stability. This device is widely applicable in electric vehicle charging stations, computer data centers, industrial control systems, and other fields.

Claims

1. A capacitor-buffered emergency power switch, comprising: - Double-pole double-throw mechanical interlock switch for switching between main and backup power sources; - Supercapacitor snubber circuit, with a capacity of 10F / 32V, is responsible for providing temporary power during the switching process to ensure continuous and stable power supply.

2. The switch according to claim 1, wherein: The double-pole double-throw mechanical interlock switch is used to prevent the risk of simultaneous conduction of the main power supply and the backup power supply during the switching process, thereby ensuring the safety of the system.

3. The switch according to claim 1, wherein the supercapacitor buffer circuit can provide a high instantaneous current at the moment of power switching to ensure a smooth transition and reduce voltage fluctuations.

4. The switching switch according to claim 1 has a switching time of no more than 10ms, which is significantly better than the national standard requirement of ≤50ms, thereby ensuring a fast response.

5. The transfer switch according to claim 1 has a cycle life of ≥ 1 million times, is suitable for frequently used application scenarios, and provides long-term reliable service.

6. A charging system comprising the above capacitor-buffered emergency power switch to improve the reliability of the system in the event of power failure or voltage fluctuation.