The principle of insulation detection of new energy vehicles, and the method of insulation fault det

1) Connect the test line as shown in the figure below, P1 and N1 correspond to the positive and negative power supply of the high-voltage components respectively;

2) Power on the vehicle, make the whole vehicle enter the "OK", "ready" state, and ensure that the high-voltage contactors such as DC-DC, air conditioner, and steering motor controller are closed;

3) The number to be shown is stable, V1 is measured as U1, V2 is measured as U1', U1>U1';

4) Close K1, the number to be shown is stable, V1 is measured as U2, V2 is measured as U2'

5) Calculation formula:

Calculation formula. Wherein: RI is the insulation resistance of the whole vehicle; r is the internal resistance of the tester, and r0 is the test resistance of 1m.

Schematic diagram of vehicle insulation test.

I am too familiar with this kind of problem, and there is a more commonly used insulation detection method for new energy vehicles to introduce to you.

The first step is to connect the new energy vehicle insulation safety tester. When connecting, it is necessary to make sure that the device is in a power-off state to prevent the occurrence of a dangerous event of electric shock, and turn on the power of the device after the wiring is completed.

New energy vehicle insulation test site).

The second group is set up to set the insulation test parameters of the new energy vehicle insulation safety inspection instrument.

The third step is to press the "Start" button to start the insulation test of the new energy vehicle, and the test data will be automatically displayed after the test is over.

Introduction to the principle of insulation detection of electric vehicles Whether it is an electric car or a car, I think everyone has seen a lot! Today, let's talk about the principle of insulation testing of electric vehicles. One might ask, what is the purpose of insulation monitoring?

The result? Don't worry, listen slowly, tell everyone slowly! Introduction to the principle of automotive electrical insulation detection - the working principle of insulation monitoring mainly includes current sensing method, symmetrical voltage measurement method, bridge resistance method, low-frequency signal injection method, etc.

Among them, the low-frequency signal injection method is the most widely used. A positive and negative symmetrical square wave signal is generated, and a measurement loop is formed by the wiring of the insulation impedance monitor and the insulation resistance RF between the DC high-voltage system and the chassis. The RF value is calculated by collecting the voltage division of the sampling resistor.

Introduction to the principle of automotive electrical insulation detection - function: The electric automobile and electric vehicle insulation detector is used to monitor the electrical insulation performance of the high-voltage system of electric vehicles in real time to ensure that the vehicle runs in an isolated state, which is of great significance to ensure the personal safety of passengers, the normal operation of electrical equipment and the safe operation of the vehicle. Now, we all know the introduction of the principle of insulation detection for electric vehicles. A lot of things in the car are electric, a lot of things are iron.

As we all know, iron can conduct electricity, and people will be charged if they are not careful, so insulation monitoring is still necessary! @2019

Whether it's an electric car or a sedan, I think my friends have seen a lot of it! Today we will talk about the insulation resistance test standard for new energy vehicles. One might ask, what is insulation monitoring for?

What does it do? Don't worry, listen to me and tell your friends slowly! Test Standard for Insulation Resistance of New Energy Vehicles:

PrincipleThe working principle of insulation monitoring mainly includes current sensing method, symmetrical voltage measurement method, bridge resistance method, low-frequency signal injection method, etc. Among them, the low-frequency signal injection method is the most widely used. A positive and negative symmetrical square wave signal is generated, and a measurement loop is formed by the terminal block of the insulation impedance monitor and the insulation resistance RF between the DC high-voltage system and the chassis.

The RF value is calculated by collecting the voltage division of the sampling resistor. D MG 2670 digital megohmmeters consist of medium and large integrated circuits. The meter has high output power, high short-circuit current, and multiple output voltage levels.

The working principle is that the built-in battery is used as a power source to generate DC high voltage through DC DC conversion, and then a current from E pole to L pole is generated through the product under test from E pole to L pole. After the conversion of the V , the voltage divider completes the calculation and the measured insulation resistance value is displayed directly by the LCD. New energy vehicle insulation resistance test standard royal staring:

Function: The electric vehicle insulation tester is used to monitor the electrical insulation performance of the high-voltage system of electric vehicles in real time to ensure that the vehicle operates in an insulated state, which is of great significance to ensure the personal safety of passengers, the normal operation of electrical equipment, and the safe operation of the vehicle.

Now I know the insulation resistance test standard for new energy vehicles, and a lot of things in the car are all electrified, and many things are iron. Friends also all know that iron can conduct electricity, and if you are not careful, you will be electrified, so insulation monitoring is still very necessary!

A common detection method for EV insulation testing is the use of EV insulation testing equipment.

to carry out the full Jiqing bridge deck inspection. First of all, you need to use the Mingmeng test cable to connect the electric vehicle to be tested and the electric vehicle insulation detection difference is prepared, then select the insulation test item and set the relevant testing parameters, press the start button, and start the test.

Whether it's an electric car or a car, I'm sure you've seen a lot of it! Today, let's talk about the insulation resistance test standard of new energy vehicles. Some people will ask, what is insulation monitoring for? What does it do? Don't worry, listen to the auto repair Bian Xiao slowly tell your friends!

The working principle of insulation rot monitoring mainly includes current sensing method, symmetrical voltage measurement method, bridge resistance method, low-frequency signal injection method, etc. Among them, the low-frequency signal injection method is the most widely used. In it, a positive and negative symmetrical square wave signal is generated, and the insulation resistance RF between the terminal block of the insulation impedance monitor and the DC high-voltage system and the chassis forms a measurement circuit.

The RF value is calculated by collecting the partial voltage on the sampling resistor. The DMG2670 digital megohmmeter consists of medium and large scale integrated circuits. The meter has a large output power, a high short-circuit current value, and multiple output voltage levels (a total of four voltage levels).

It works by means that the DC high voltage generated by the battery in the machine passing through the DC DC conversion passes through the product under test from the E pole to the L pole, and then generates a current from the E pole to the L pole. After the IV conversion, the measured insulation resistance value is displayed directly on the LCD via a voltage divider.

New Energy Vehicle Insulation Resistance Test Standard: Gong You Qi Bo Neng.

It is of great significance to ensure the personal safety of passengers, the normal operation of electrical equipment and the safe operation of vehicles by using the electric vehicle insulation tester to monitor the electrical insulation performance of the high-voltage system of electric vehicles in real time to ensure the operation of the vehicle in an insulated state.

Now friends know the insulation resistance test standards for new energy vehicles. A lot of things in the vehicle are electric, and a lot of things are iron. Friends all know that iron can conduct electricity, and people will be electrocuted if they are not careful, so insulation monitoring is still very necessary!

The insulation resistance test of new energy vehicles can be tested by the new energy vehicle safety tester. First, use the test clamp to connect the parts to be tested, then set the relevant test parameters of the insulation resistance test, start the safety tester to carry out the insulation resistance test of the new energy vehicle, after the test is completed, the new energy vehicle safety tester will automatically display whether the test results are qualified.

The above is the answer to the new energy vehicle such as or how to carry out insulation cleaning resistance detection, I hope that the slag can help you