Measurement circuit and method for insulation monitoring instrument fault circuit

A technology of insulation monitor and measuring circuit, which is applied in the direction of measuring electrical variables, measuring electricity, measuring resistance/reactance/impedance, etc., can solve problems such as deviation, increase the hidden safety hazards of charging current, etc., and achieve extended sampling time and high measurement accuracy. Effect

Inactive Publication Date: 2015-04-29
安徽天健环保车辆部件有限公司
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AI Technical Summary

Benefits of technology

This technology helps improve battery performance during rapid charge times while also improving responsiveness when there're no more power being supplied or recharged at once. By measuring the amount of electricity stored within an electrode assembly (EA) with multiple sensors placed throughout its volume), this system allows users to adjust their batteries based upon factors like temperature, humidity levels, etc., resulting in improved overall energy efficiency and longer lifespan.

Problems solved by technology

The technical problem addressed during this patented study relates to ensuring that an electronic device called an isolation monitoring unit accurately detects any leaks or short circuits caused by various factors like motor speed changes or compressed gas cylinders being charged at very fast speeds without causing harmful effects for other components within the car's body.

Method used

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  • Measurement circuit and method for insulation monitoring instrument fault circuit

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Embodiment Construction

[0014] like figure 1 Shown, a kind of measurement circuit of insulation monitor fault circuit, the measurement circuit of insulation monitor fault circuit, it comprises the insulation monitor that is used for real-time online dynamic monitoring system to the insulation resistance Rf-dc of the earth, sampling resistance Rm and resistance Ri; the insulation monitor is connected between the high-voltage system and the ground plane, and there is a system leakage capacitance Ce between the high-voltage system and the vehicle ground plane, and the sampling resistor Rm and the resistance Ri are connected in series between the high-voltage system and the ground plane, so The sampling resistor Rm and the resistor Ri are connected in parallel with the leakage capacitor Ce; the high voltage system, the vehicle ground plane and the insulation resistor R f-DC form the measurement loop.

[0015] The measurement method according to the above measurement circuit is as follows: firstly, a positi

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Abstract

The invention discloses a measurement circuit and method for an insulation monitoring instrument fault circuit. The measurement method comprises the steps that firstly, a low-frequency square-wave pulse signal with the positive electrode and the negative electrode symmetrical is generated inside an insulation monitoring instrument; secondly, a measurement loop is formed through high negative voltage, a full ground plane and an insulation resistor Rf-dc; thirdly, a sample voltage is generated on a sampling resistor Rm through current in the measurement loop; fourthly, the sample voltage is sent to a built-in microprocessor for acquisition, and the numerical value of the insulation resistor Rf-dc can be obtained by conducting calculation according to the redundant binary algorithm. The measurement circuit and method for the insulation monitoring instrument fault circuit have the advantages the measurement precision is high, reliability is high, safety is high, and the circuit and method are suitable for different environments.

Description

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Claims

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Application Information

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Owner 安徽天健环保车辆部件有限公司
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