How to prevent the battery from being dried and electric vehicle charger

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

I. Current measurement: charging a set of unsaturated batteries with charger, measure the multimeter in series to measure charging current, 10AHAH current is 1.6-1.

9A is normal, 17AH / 20AH, 2.5-3.0A It is normal; second, the highest voltage measurement: charging the saturated battery with the charger, measure the maximum voltage of the turning light, 36V is generally 43.

8-44.4V, 48V general: 54.4-59.

2V three, turn light current measurement : Single the multimeter in series in the charging circuit, charging the saturated battery pack, measuring the current of the turning light, 10AHAH turning current is 300-500mA, 17ah / 20ah is 600-800 mA is normal; four, measure the floating voltage : Connect the charger to the power supply, measure the output voltage. 36V is 41.4-41.

7, 48V: 54.8-55.6 is normal.

About high temperature, electric cars have three major summer heat? 1. Do not expose electric car under high temperature and sun: weather is hot, electric vehicles are also fever during use, easy to increase the battery temperature, initiate self-ignition of the battery; 2. Do not charge the electric vehicle charger at high temperatures: battery In the high-temperature season, there will be a problem of overcharge.

The temperature rise will increase the activity of each active material, the reaction is sufficient, the positive electrode is chloride, resulting in a decrease in hydrogen-hydrogen-hydrogen, resulting in fast response speed, large charging current It causes a fire; 3. Recharge immediately after driving at a high temperature: If the electric vehicle is charged immediately after driving, it is easy to increase the temperature rise, the motor is heated, and even causes the battery to crack or deform, thereby causing circuit failure, In turn triggers spontaneous combustion, be sure to cool after cooling. Pay attention to usually use 1.

Preventing the charging time, otherwise it will be very easy to lose water, hooles, etc., or even fire; 2. When charging electric vehicles with electric vehicle, it should first put the charger Electric car connection, then connect the charger to the power supply, if the order is reversed, it is easy to cause short circuits; 3.

In order to prevent spontaneous combustion, keep ventilation during charging, because the temperature is relatively high, electric vehicle charger itself It will also be heated when charging, so that the temperature of the electric vehicle and the charger will be reduced; 4. Do not put the charger on the foot pedal of the electric car while charging, or the charger temperature Evergreen, plastic and plastic is easy to ignite. 1 The battery pack is off-line capacity test, the test data is accurate, the actual capacity of the battery pack is convenient for the actual capacity of the battery pack.

However, when the power supply system only has a set of battery backups, the power supply time of the system standby is significantly shortened, and it is unclear whether there is a quality problem in the line battery pack; especially for more than six years of battery pack, the battery pack is Communication equipment discharge guarantee risk factor increases. So in this way, the battery pack is used to make the battery pack, requiring the diesel generator set to ensure that the power generator set, switching power supply and other equipment are operating normally; 2 The battery pack after the discharge is charged and then incorporated. Power supply system, at this time, there is a voltage difference between the online battery pack.

If the operation is not operating, it will cause a large current of the battery pack to incorporate the incoming battery pack, and a spark is prone to safety. In order to solve the problem of fan, the switching power supply output voltage must be adjusted, and then paralleled with the voltage of the charged battery pack; 3 When using off-line measurement methods, the discharge mode is difficult to operate, and it is necessary to leave the positive electrode of the battery pack. The power cord, it is necessary to leave the negative system of the battery pack, especially when the battery pack is negative, it is particularly careful and insulation.

Improper operation caused a negative short circuit, which will cause system power supply interruption and personal safety incident. At the same time, the discharge battery pack consumes, waste electricity, increases electric energy, increases the cooling time of the equipment room air conditioner, affects the operation environment of the machine room equipment, to maintain the person's moment to guard, to avoid the fake load high temperature, communication power supply equipment failure; 4-turn power supply DC The output voltage is 46.4V, so that the battery pack is discharged directly to the actual load to the switching power supply DC output voltage protection setting value.

Since the battery pack discharge current is large, the lowest power supply of 40 ~ 57V should be considered by the power supply maintenance procedure, and the battery pack to the device power supply circuit full pressure drop 3.2V and battery cell discharge minimum 1.8V require consideration.

In order to ensure the safety of the power supply system, the discharge current and discharge time with the actual load are more difficult, and the battery pack capacity assessment is not accurate enough, there is uncertain factors on battery performance test, especially for the use of more than 3 years of battery pack performance testing difficult to achieve test Expected effect. .

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