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High Voltage Interlock Detection Circuit

A high-voltage interlock and detection circuit technology, which is applied in the direction of measuring electricity, measuring electric variables, power supply testing, etc., to achieve the effects of reducing computing resources, simplifying high-voltage interlock detection circuits, and reducing requirements

Active Publication Date: 2019-06-04
JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a high-voltage interlock detection circuit, which aims to solve the technical problem of how to reduce the complexity of the high-voltage interlock detection circuit, which can simplify the high-voltage interlock detection circuit, thereby reducing the test cost

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  • High Voltage Interlock Detection Circuit
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  • High Voltage Interlock Detection Circuit

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Embodiment Construction

[0027] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] The high-voltage interlock detection circuit provided by the embodiment of the present invention includes a high-voltage interlock loop and a high-voltage interlock circuit, the high-voltage interlock loop has a loop input terminal and a loop output terminal, and the high-voltage interlock circuit has a PWM signal output terminal and a signal The return inspection input terminal, the PWM signal output end is connected with the l...

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Abstract

The present invention proposes a high-voltage interlock detection circuit, including: a high-voltage interlock loop, with a loop input and a loop output; a high-voltage interlock circuit, including a monitoring chip and a filter capacitor, with a PWM signal output and a signal The back-check input terminal, the PWM signal output terminal is connected to the loop input terminal through the first current-limiting resistor, the loop output terminal is connected to the signal return-test input terminal through the second current-limiting resistor, and the PWM signal output from the PWM signal output terminal is passed through the high voltage The interlock loop returns the signal back to the input terminal, and enters the monitoring chip after being filtered by the filter capacitor. The invention can simplify the high-voltage interlock detection circuit, reduce the occupation of MCU computing resources, and lower the requirements on MCU hardware port resources.

Description

【Technical field】 [0001] The invention relates to the technical field of circuit protection, in particular to a high-voltage interlock detection circuit. 【Background technique】 [0002] The integrity of the high-voltage power supply circuit is the basis for the operation of the high-voltage circuit. If the high-voltage circuit is incomplete, such as the connector is not connected, the circuit will not work normally, and even parts will be damaged in severe cases. [0003] In the related art, a high-voltage interlock circuit is generally used to detect the integrity of the high-voltage circuit, and the high-voltage interlock circuit generally adopts an analog type and a digital type. The analog type refers to the type in which the potential of the circuit is stable when the circuit is working after the high-voltage connection relationship is determined, for example, a simple resistor divider type, an optocoupler conduction type, etc., but its anti-interference ability is rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02G01R31/50
CPCG01R31/50G01R31/40
Inventor 敖翔
Owner JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED