How to detect electric vehicle battery

The battery of the electric vehicle is filled with normal charging

1 If you suddenly accelerate the ride, the gauge pin only drops less than half a grid (a small scale), it is a new battery.

2 If you suddenly accelerate the ride, the battery gauge needle drops a grid. It is a used battery.

3 If you suddenly accelerate the ride, the power gauge needle drops 2-3 grids, it is fast scrap old batteries, drops more than four is discarded battery.

1. Test battery open circuit voltage and the load voltage, found that the no-load voltage of 10.5 V, load voltage 3.5 V, say how the battery is broken.

2. Pry the cover, remove the plastic cap.

3. Use a comprehensive detector to detect which one has a problem. Tables 5, 6, and 7 were found to be negative, indicating that the 5th and 6th grids were damaged.

4. With shell opener abort column glue, use the lead welding machine take the polar column.

5. Use the shell opener to open the top cover.

6. With the single detector to detect each of no-load and load voltage, found 1-5, light load 1.2 V, 2.2 V in the normal range, load only 6 g light 2 V 0 V. 6 cell damage.

7. With side cutting pliers cut across the bridge and remove the damaged plate, and then from other battery out a good plate change

8. Good welding bridge, add fluid charging, charging cannot too much, just can see the water line, testing is complete.

Using a multimeter red pens and + extremely black pens and pick up -.

The gear is in the DC 50V gear. After the 12V battery is discharged, it is 10.5V. After the battery is fully charged, it is 14.4V. When the 24V battery is discharged, the 21V battery is 28.8V. Exceeding or below is not normal.

Battery, chemical energy into electrical energy device called chemical battery, commonly referred to as "for the battery. After discharge, can make the internal active substances in charging way - to store the electric energy to chemical energy regeneration; the chemical energy is converted to electrical energy again when it is required to discharge. Such a battery is called a battery (storage battery), which is also called a secondary battery.

The so-called battery is a kind of electrochemical equipment which stores chemical energy and gives out electric energy when necessary.

The number of cycles of normal batteries is 500~1000 times. The quality of the charger should be chosen well. It is best to choose a discharge function. At the same time, when using electricity, it should be charged in time, and fully charged. Do not use it after deep discharge. After the ambient temperature drops to 5°, the discharge capacity will decrease, including the temperature requirements.

This is a different manufacturers have different connection, as long as you have been in the original car charger to charge no problem. But to replace the charger when it is important to note that the new charger output polarity, connection must be consistent with the original charger, otherwise it will damage the charger. You can solve the problem: the open the battery compartment to put the batteries in electric cars and twist the measuring cell voltage on pile head, and then test the socket under voltage, if the same inside the battery compartment no poor contact. If the battery voltage is significantly greater than the socket voltage is to pay attention to find where there is the phenomenon of poor contact, pay special attention to the fuse. If there is no poor contact but low voltage, plug in the charger, battery voltage and quickly rose to about 56V. The charger is a green light. This may be a battery.(screw regulated, there are about 48 v battery voltage, but the car show without electricity, motor weakness, may be the battery box socket to the part of the car is the phenomenon of poor contact)

The zero line is to point to what you say? I have never seen a direct current is zero line ah, listen to what you say may be battery cathode grounding, amount of battery when you can use a multimeter red pens and a connect battery anode black pens and end connect battery cathode, normal should be 48v. You should choose a multimeter measurement of dc gear. The battery of electric bicycle is general by three pieces of 12 v10ah or a larger battery series power supply, can't you use a multimeter measurement generally good or bad, if the battery is broken have not necessarily have corresponding current, voltage discharge rate can be used to measure good or bad. If the battery is good, should consider whether damage of speed governor.

Detecting the no-load voltage and load voltage of the battery, it was found that the no-load voltage was 10.5V and the load voltage was 3.5V, indicating that the battery was broken.

Pry the cover, remove the plastic cap.

Use a comprehensive detector to detect which one has a problem. Tables 5, 6, and 7 were found to be negative, indicating that the 5th and 6th grids were damaged.

With shell opener abort column glue, use the lead welding machine take the polar column.

Open the top cover with the shell opener.

With the single detector to detect each of no-load and load voltage, found 1-5, light load 1.2 V, 2.2 V in the normal range, load only 6 g light 2 V 0 V. 6 cell damage.

With side cutting pliers cut across the bridge and remove the damaged plate, and then from other battery out a good plate change

Good welding bridge, add fluid charging, charging cannot too much, just can see the water line, testing is complete.

Tools/materials multimeter a step/method

Measuring the voltage of the battery can be done with a pointer multimeter or a digital multimeter side:

Methods: 1. Choose good multimeter range (1.5 V and 3 V, 6 V, 9 V);

2. The red pens and the anode of the battery, black pens and connect the cathode of the battery.

To measure the battery's current still use pointer multimeter or digital multimeter to measure:

Methods: 1. Select the mileage of the multimeter (100mA, 500mA, 1A, 5A);

2. Connect the multimeter in series with the circuit;

3. The red test pen lets the current flow in, and the black test pen makes the current flow out;

4. The circuit must be connected to the electrical appliance. Never connect the ammeter directly to the two ends of the battery. Precautions must be connected to the electrical appliances. The current meter cannot be directly connected to the two ends of the battery

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