How can a controller be broken? How to fix a broken controller

How can a controller be broken? If you don't operate the controller properly, you can break it, so what? When operating, it must be done correctly.

How can the controller be broken, I think it's perfectly okay if the power is cut off or something.

If the controller is not to be damaged, it needs to be safeguarded by installing a protective device on the outside.

It's not easy to break the controller, unless it's smashed with a heavy object, otherwise the controller has undergone some special treatment.

I can't control myself, because the current is too high or the mechanical seat is easy to lift air.

How can the controller be damaged, this controller is generally the contact inside the lamp, it will be broken, and it will not light up.

Why did you think of breaking this controller for anything?

How can the controller be broken, and why should the control area be broken and destroyed? If you take the power supply down, it will be broken, and if you break the circuit, it will be broken.

If, during use, the current is too high and causes a short circuit, then the controller will be damaged.

What exactly is the controller used for?

If you want to break the controller, you can directly use the control ** to parse its installation package, and then you can directly break the empty controller.

Controller, if you try to break it, unless you blister it, it's broken.

How can the controller be broken, this is easy to break.

Since the controller is full of electronic components inside, most of the controllers are replaced directly if they are broken, and they may also go to the repair shop to check whether they can be repaired. The electric vehicle controller is the core control device used to control the start, operation, advance and retreat, speed, stop and other electronic devices of the electric vehicle motor.

Check the power management circuit, measure whether the output voltage is normal with a multimeter, check whether the interface with the controller and external functional parts, the main chip, etc., and find the damaged components for replacement.

If the electric vehicle is noisy and the load speed is slow, the car cannot be started zero after the car is stopped, and the motor can only run normally when it rotates. This is a symptom of the lack of phase in the motor, which may be caused by damage to the hall of the motor; It is also possible that one of the phase circuits inside the controller is faulty. It is necessary to carefully check whether the connection cable is faulty, and the Hall and connection cable are detected to be fine, it may be that the internal components of the controller are faulty and the controller needs to be replaced.

If the electric vehicle is energized and does not go away, it will make a "bang" noise when it is implemented. It may be that the motor line contact is connected to the short circuit caused by the connection, you can unplug the three thick phase wires of the motor, if the trolley is laborious and disappears, it means that the controller is broken and needs to be replaced. If it is still difficult to implement, it may be caused by a short circuit and burnout of the motor coil.

Just buy a model of the same model and replace it.

1. When the electric vehicle has no output from the brush controller.

1. Set the multimeter at +20 rounds (DC) gear, and measure the high and low potential of the output signal of the brake handle first.

2. If the potential change of the brake signal exceeds 4V when pinching the brake handle, the brake handle fault can be eliminated.

3. Then, according to the commonly used Shidao upper foot function table of the brush controller, the circuit analysis is carried out with the voltage value of the measured main control Shidaomin logic chip, and check whether the value of the peripheral devices (resistors, capacitors, diodes) of each chip is consistent with the identification on the surface of the component.

4. Finally, check that there is a fault in the peripheral device or integrated circuit, and we can eliminate the fault by replacing the device of the same model.

Second, when the brushless controller of the electric vehicle has no output at all.

1. Refer to the main phase check measurement chart of the brushless motor controller, and use the DC voltage of the multimeter +50V to detect whether the gate voltage of the 6-channel MOS tube corresponds to the rotation angle of the handlebar.

2. If there is no right, it means that the PWM circuit or MOS tube drive circuit in the controller is faulty.

3. Refer to the main phase check chart of the brushless controller to measure whether the voltage of the input and output pins of the chip corresponds to the rotation angle of the handlebar, and you can judge which chips are faulty, and replace the same type of chip to eliminate the fault.

3. When the power supply of the control components of the brush controller of the electric vehicle is abnormal.

1. The internal power supply of the electric vehicle controller generally adopts a three-terminal voltage regulator integrated circuit, and a three-terminal voltage regulator integrated circuit is generally used, and their output voltages are 5V, 6V, 12V, and 15V respectively.

2. Set the multimeter at the DC voltage +20V (DC) level, and lean the black and red pen of the multimeter on the black line and red line of the turnbar respectively, and observe whether the reading of the multimeter is consistent with the nominal voltage, and the difference between their upper and lower voltages should not be exceeded.

3. Otherwise, it means that the internal power supply of the controller is faulty, and the brush controller can be eliminated by replacing the three-terminal voltage regulator integrated circuit.

Fourth, when the brushless controller of the electric vehicle is out of phase.

The fault of the power supply and brake handle of the brushless controller of electric vehicles can be eliminated by referring to the troubleshooting method of the brushless controller, and there are also its unique fault phenomena, such as phase loss. The phase loss phenomenon of brushless controller of electric vehicle can be divided into two situations: main phase loss and Hall phase loss.

1. The detection method of the main phase loss can refer to the electric vehicle brush controller speeding troubleshooting method to detect whether the MOS tube is broken down, and the breakdown of the brushless controller MOS tube is generally the breakdown of two pairs of MOS tubes in a certain phase at the same time, and ensure that they are replaced at the same time. Check the measuring point.

2. The Hall phase loss of the brushless controller of the electric vehicle is manifested by the fact that the controller cannot recognize the Hall signal of the motor.

Extended information: The electric vehicle controller is used to control the start, operation, advance and retreat, speed, stop and other electronic devices of the electric vehicle motor.

I can't see this.

Question: I'm only going to have this**.

Q: What should I do?

You should be able to buy it at a repair shop.

It can't be fixed, so let's get a new one.

The fire line and the neutral line collided, and the tram did not go.

Guangzhou City can repair the controller in the first place.

Which aspect of the controller. Let's see if we can help you.

What controller? Can you elaborate on that?

Summary. Hello, the controller is broken, the vehicle will not be able to drive normally, and the instrument power light will flash or not light, and the motor will have resistance, difficult to push and other phenomena. The controller is an electronic control unit used to control the electrical system of the body and is an important part of the car. <>

<>What happens if the controller breaks.

Hello, if the controller is broken, the vehicle will drive normally without returning to the cherry blossom posture method, and the instrument power light will flash or not light up, and the motor will have resistance, and it will be difficult to travel on land. The controller is an electronic control unit used to control the electrical leakage system of the body and is an important part of the car. <>

<> Extension and Delay Guessing Data: The function of the controller is to receive the Sakura data sent by the microprocessor in the control unit, process the data and transmit it to the CAN transceiver. At the same time, the CAN controller also receives the data received by the CAN transceiver, processes the data and transmits it to the microprocessor. <>

Repair method for broken controller:Check the power management circuitry, interface to external functional components, main chip, and power tube drive circuitry;

Check the power management circuit, and use a multimeter to measure whether the output voltage of each point is correct;

The controller of the electric car is bad, and its performance is often manifested as not being able to walk or not walking well, and the most direct manifestation is that it cannot drive.

The electric vehicle controller is divided into two types in terms of structure: detached and integrated. Separation: The so-called separation refers to the separation of the controller body and the display part, the latter is installed on the handlebar, and the controller body is hidden in the car body box or electric box, not exposed.

All-in-one: The control part is integrated with the display part and is housed in a delicate special plastic box. The box is installed in the center of the handlebar, and the panel of the box has a different number of small holes, the hole diameter is 4-5mm, and the transparent waterproof membrane is applied to the outside.

How to detect the quality of the electric vehicle controller (simple method):

1. No need to measure the instrument or directly replace the controller

Erect the rear wheel, the motor is off the ground, there is resistance to push the motor, or turn the handle, the motor does not rotate smoothly with sound, and there is no problem with the connection line between the controller and the motor, then it may be that the controller is broken and the power tube of the controller is damaged; If the problem persists, it is not the controller's problem.

2. Unplug the three thick phase wires of the motor (five are signal lines).

The phase wires are yellow, green and blue, and it is easy to rotate with hand assistance, that is, the controller is broken.

3. Turn off the power supply, and the controller is separated from the vehicle

Unplug the power cord into the controller, connect the controller to the motor, connect the power cord to the motor wire, turn on the power switch, and the motor is running normally, indicating that the controller is damaged.

4. Use testing instruments such as multimeters and car repairers

Multimeter demonstration: first disconnect the controller from the power supply, connect the thick black wire of the controller with the thick red line to short circuit, short the three thick yellow wires to the thick black touch wire, and put the internal capacitor residual current, and the thick yellow wire is the phase wire. Put the multimeter in the diode file to measure, use the red watch pen to connect to the negative pole of the controller, and the black watch pen to measure the three phase wires in turn, and the three values should not be much different.

Then use the black pen to connect the positive pole, and the red pen to connect the three phase wires in turn, and the values are basically the same. If two numerical measurements are normal, the controller is normal. Then the controller is connected to the car body line normally, the power supply is turned on, the brake cable is unplugged, and the voltage of the multimeter is used to measure whether the 5V voltage of the turnbar is normal.

At 5V, the controller is normal, otherwise it is damaged.

The workaround for a corrupted controller is:

1. Check the power management circuit, use a multimeter to measure whether the output voltage of each point is correct, and find the damaged components for replacement.

2. Check the interface with external functional components.

3. Check whether the main chip is damaged.

4. Check the power tube drive circuit. The controller refers to the main command device that changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit to control the start, speed regulation, braking and reverse of the motor according to a predetermined sequence. If the controller is damaged, the vehicle will not be able to drive or the vehicle will not be able to drive, resulting in weak start-up and difficulty in pushing the cart.

Note. 1. Check the power management circuit and use a multimeter to measure whether the output voltage at each point is correct. If there is a problem, locate the damaged component and replace it. If the voltage at each point is normal, perform other searches, as follows.

2. Check the interface with external functional components. Focus on the interface section with the handlebar and brake lever. Find the input pin of the rotary handle on the main control chip, turn the rotary knob, and measure whether the voltage value of the point changes from small to large voltage (generally 1-4V).

If there is no change, it means that there is a problem with the knob input loop. If it is normal, find the brake lever input pin on the main control chip, measure whether the voltage of the pin is normal, and judge whether there is a problem with the brake lever input circuit.

3. Check the main chip. Find the PWM output position from the circuit board, turn the handlebar, and measure whether the voltage value of the point changes (generally 0-5V). If there is no change, it can be judged that the chip is damaged. If it's normal, continue looking for it later.

4. Check the power tube drive circuit. Turn the knob to measure whether the gate voltage of the MOS transistor changes from small to large voltage (generally 0-12V or 0-15V).

If there is no change, it means that the drive circuit is not only a problem, but the damaged component is found and replaced, and the fault is eliminated. If the change is normal, there is no problem with the drive circuit. In this case, it can be determined that the cause of the fault is that the MOS power tube has been damaged by an open circuit.

Determining controller damage starts with an external power supply and then detects it internally.

Tool Raw material multimeter controller method Step 1: To judge the quality of the controller, you first need to power on to observe whether the control indicator is normal, and measure whether the power supply voltage is normal with a multimeter.

2. If it is normal, you need to disassemble the controller to see if there is any damage to the Qiaozhou sedan inside.

3. Measure whether the fuse is open or not.

4. Measure the varistor, the indentation and the sensitive resistor are to protect the back circuit board, you can test whether it is bursting with filial piety.

5. Observe whether there is a problem with the circuit board and solder points.