High-voltage explosion-proof metallized film capacitor
By introducing explosion-proof mechanisms and circuit-break protection mechanisms into metallized film capacitors, and disconnecting the wires under high voltage using the pressure relief cover and piston system, the problem of explosive explosion of metallized film capacitors is solved, and the circuit breaker at high voltage and automatic electrical connection is restored after pressure recovery is achieved, ensuring the safe and reliable operation of the capacitor.
CN120565286APending Publication Date: 2025-08-29TONGLING XINZHOU ELECTRONICS TECH
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Patent Information
- Application Number
- CN202510581767.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-08-29
AI Technical Summary
Technical Problem
Metalized film capacitors are prone to explosion at high temperatures or overcharge, and current still passes through during the exhaust process, affecting service life.
Method used
A high-voltage explosion-proof metallized film capacitor including an explosion-proof mechanism and a circuit-break protection mechanism is designed. The wire connection is disconnected under the action of high-pressure gas through the pressure relief cover and the piston system to form a circuit breaker, and the electrical connection is automatically restored after the pressure is restored.
Benefits of technology
It effectively avoids continuous power-on at high voltage, reduces the risk of explosion, extends service life, and ensures normal operation after pressure recovery.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a high-voltage explosion-proof metallized film capacitor which comprises an outer shell, a capacitor core is arranged in the outer shell and electrically connected with a first wire, the top of the outer shell is in threaded connection with a sealing cover, the outer wall of the sealing cover is fixedly connected with pins, and the pins are fixedly connected with a second wire. The sealing cover is provided with a circuit breaking cavity, and one end of the first wire and one end of the second wire extend into the circuit breaking cavity. High-pressure gas generated in the outer shell firstly enters the pressure relief cover, then pushes the second piston to move towards the side away from the pressure relief cover, and pushes the metal conduction piece to move in the circuit breaking cavity through the second piston rod until the metal conduction piece is electrically disconnected with the first wire and the second wire. At the moment, the first wire and the second wire form an open circuit and stop working, pressure is released through the pressure release part, the capacitor is prevented from being still powered on and running in the pressure release process, the explosion risk is reduced, and the service life is prolonged.
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