If the lithium battery is reversed, discharge it by connecting a resistor. According to the request for relevant public information, when the lithium battery is reversed, it is discharged by connecting a resistor. To discharge by connecting a resistor, you can connect a small electric bead of corresponding voltage to discharge it for a long time until the small bead is connected. The electric bead is connected and turns off instantly. The discharge current is high, it is better.
The lithium battery of the electric bike is too discharged, how should I repair it?
Typically, lithium batteries have high-current over-discharge protection circuits. If they are discharged several times and are not charged immediately (the battery's recovery capacity is low), the battery's own voltage will be. too weak and the protection circuitwe will be in a cut-off state, the charging process cannot be completed.
Solution: You can open the battery case, directly connect the two poles of the charger to the two poles of the battery through the protection circuit (pay attention to the polarity, you can use a multimeter to test the positive and negative poles first), charge for a few minutes and the battery voltage will increase, the protection circuit can be opened. Normal charging can then resume.
Detailed information:
The principle of overcharge protection integrated circuit is: when an external charger charges a lithium battery, in order to prevent the internal pressure from increasing due to the increase in temperature, the state of charge should be completed. At this time, the protection IC should detect the battery voltage. When it reaches 4.25V (assuming the battery overload point is 4.25V), the overload protection is activated, turning off the power MOSFET, thus stopping charging.
How to recycle used lithium batteries
Once an electric bike's lithium battery is too discharged, it can no longer be recharged, you so you can repair it. It isyourself.
1. Once the electric bicycle lithium battery is over-discharged, it cannot be recharged because the battery capacity liquid is reduced and vulcanized. If it's not serious and only loses power occasionally, you can add a little diluted solution. sulfuric acid or sulfuric acid diluted 1:1.28.
2. Once an electric bike's lithium battery has been over-discharged for a long time, it cannot be recharged. If it loses power for a long time, the battery will be seriously vulcanized. the battery needs to be replaced.
Detailed information
How to properly maintain the battery:
1. From the time the battery leaves the factory to the time it is used. is installed in the car and then in your hands A rollover process During the rollover period, the battery will have insufficient capacityte due to self-discharge. Therefore, the battery should be charged with a built-in charger until it is sufficient.
2. If you are on a business trip for a long time, the battery should be fully charged before storage, and the battery should be replenished once a month in the future. Recharge to prevent the battery capacity from being reduced or even scrapped due to sulfation of the plates due to loss and long term storage of the battery.
3. When using electric vehicles in summer, you should pay attention to the following points:
Avoid exposure to the scorching sun, and charging in high temperature environments is strictly prohibited.
Avoid charging immediately after driving in high temperatures to prevent the charging time from being too long (normally around 8 hours).
If the power supply becomes hot orIf the indicator light does not turn green when charging the battery, you should promptly go to the battery store or after-sales service point of our company for inspection and maintenance of the battery or charger. .
Baidu Encyclopedia - Electric Vehicle Batteries
In today's society, when people use lithium-ion batteries in large quantities, they inevitably produce a large amount of waste batteries. In used lithium-ion batteries, the cobalt and lithium present on the positive electrode have recycling value due to their high price and scarcity of resources. In addition, aluminum and copper foils, which are used as current collectors of positive and negative electrodes, are also metals with recycling value. Recycling the resources of these batteries can not only reduce environmental pollution caused by batteriesused, but also carry out the complete recycling of the valuable components of used lithium-ion batteries. So how do you recycle used lithium batteries?
Discharge: Install discharge facilities in the workshop to release energy from used lithium batteries and distribute discharged batteries to dry naturally.
Disassembly, using a combination of manual and mechanical methods to disassemble used lithium batteries and separate the disassembled cases, aluminum foil, copper pole pieces, etc. depending on the materials.
Crushing: Metal-containing battery materials that are dismantled and used for further processing are crushed. The crushing plant is equipped with a dust collection device and does not pollute the outside world.
Separation: Separate the pole pieces from the crushed battery material and the powder noire, and separate the copper and aluminum foil from the black powder to obtain 99.8% purity.