Electric Bike Factory Shares Common Tools About Batteries
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Electric Bike Factory shares common tools about batteries:
1. Digital voltmeter. It is more accurate than a pointer voltmeter. It is especially important when adjusting the voltage of the charger. For example, when using a notebook second-hand power supply to transform into a 13.5V-13.9V charger, the lower the charge, the lower the charge, and the higher the charge, the lower the charge. Water, the adjustment of the temperature-compensated charger is even more inseparable. There is only one point to note. The battery of the digital voltmeter will affect the test accuracy when its voltage drops too much. It should be noted that new batteries are often replaced.
2. Fuel gauge. A fuel gauge is required to measure the capacity of a battery. A professional fuel gauge is relatively expensive and is a timed constant current discharger. There is a dozen-dollar electricity meter on the market, which can also be estimated. It essentially judges the battery quality and capacity by measuring the internal resistance of the battery. The structure is very simple, that is, a voltmeter is connected in parallel with a high-power resistor with a very small resistance. The imported one more switch, the switch controls the access and disconnection of the resistance. In the specific test, first measure the open circuit voltage of the battery (that is, no resistance is connected), and then connect the resistance in parallel for a few seconds (less than 10 seconds). At this time, the voltage will drop and the pointer will fall into one of the three areas of red, green and yellow. Obviously, the higher the voltage, the smaller the internal resistance and the larger the capacity. It is also made of a single-chip microcomputer using a fuel gauge that uses points, and the price is about 100 yuan. The simpler way is to use 36-volt 100-watt incandescent light bulbs (1-2 yuan a piece sold in hardware) to discharge the battery, and judge the capacity according to the discharge time. Although the discharge current is not constant and the voltage must be measured continuously, it is a simple, effective and intuitive method after all.
3. Specific gravity meter. The purpose is to measure the specific gravity of sulfuric acid, and it can also act as a straw to add acid conveniently and absorb excess dilute sulfuric acid.
4. High-power charger. Generally, the electric vehicle charger is a switching power supply type. The advantage is to save power, and the disadvantage is that the current is small, generally only about 2A. The maintenance department must have a high-power charger. From the cost-effectiveness, it is recommended to use a smart charger with a tapped ring cattle transformer and bridge rectifier and a control board. The price is about 130 yuan, which can provide 30A of charging current. . Uses: to charge large-capacity batteries, repair batteries, perform a full charge on batteries that are regularly float-charged over a period of time, and ablate batteries with minor crystal branch short circuits. Of course, paid charging services are also available. 5. Lead-acid battery repair device. It is mainly to restore the battery that has been placed for too long and has not been charged in time. Generally, after adding water, it is charged with a constant current of 0.1C-0.05C, which takes one day to several weeks. Using pulse repair can improve efficiency. It should be noted that the repair device only has a significant effect on vulcanization, and it is ineffective against the softening of the electrode plate, the shedding of active substances, and the connection of electrodes.
information about Electric Bike Factory : https://www.suqier.com
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Last Update : 18 June 2020 8:17 AM
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