Repair methods of electric bicycle lithium batteries: freezing method and activation method.
1. Freezing method
This method is relatively simple. As long as there is a freezer or refrigerator at home, the lithium battery of the electric vehicle should be used. wrapped in plastic film. Seal it, then put it directly in the freezer to store. Generally speaking, it should be frozen for 2-3 days, then taken out and placed at room temperature for two days, which will take place. a certain repair effect on the lithium battery.
2. Use the activation method
This method is to find a charger with a current lower than that of the lithium battery to charge the lithium battery. Charging only takes about two hours. Then replace it with a matching charger and continue charging the lithium battery until quntil it is full. This method can activate the battery and have a certain repair effect.
Types of lithium batteries
1. Ternary lithium battery
Ternary lithium battery means that the cathode material is nickel-cobalt-manganese-lithium. oxide and negative electrode material graphene are used as negative electrode materials. Nernary materials are mainly used in new energy vehicles, electric vehicles, pneumatic tools, energy storage technology, intelligent sweeping robots, drones, intelligent wearable devices and other industries.
2. Lithium iron phosphate battery
As the name suggests, lithium iron phosphate battery means that the material of the positive electrode is lithium iron phosphate as the material of the positive electrode and the material of the negative electrode. graphene is used cas negative electrode material. Lithium iron phosphate batteries are mainly used in new energy vehicles, energy storage batteries, etc.
3. Lithium cobalt oxide battery
Lithium cobalt oxide battery means that the material of the positive electrode is lithium cobalt oxide and the Negative electrode material is graphene. Lithium cobalt oxide batteries have stable structure, high capacity ratio and outstanding overall performance. However, they have poor security and a very high cost. They are mainly used for small and medium-sized batteries and are widely used in small electronic devices such as laptops. , cell phones and MP3/4.
How to repair the lithium battery of an electric vehicle after a long period of disuse?
The three methods to repair The lithium battery is recalibrated and cycle charged, discharge and replace the electrolyte.
Recalibration of the battery involves discharging it, then fully charging it and keeping it in a state of charge for a certain period of time in order to recalibrate the battery charge display. This method is suitable for situations where the battery voltage is unstable or the power display is inaccurate. When using lithium batteries, you must ensure compliance with applicable safety regulations and operating instructions.
The battery charge-discharge cycle is to fully charge the battery, then discharge it from start to finish, and then recharge it again. This method can help the battery restore its capacity, but be careful not to over-discharge it. If the battery is very old and the above two methods are ineffective, you may considerr to replace the electrolyte inside the battery. This method requires professionals and it is not recommended to do it yourself.
Precautions for using lithium batteries
1. Do not leave lithium batteries in high or low temperature environments for a long time.
2. Do not expose lithium batteries to sunlight or water.
3. Do not put lithium batteries with other metal objects to avoid short circuit.
4. Do not overcharge or overdischarge lithium batteries to avoid reducing their service life or causing safety accidents.
5. Do not use uncertified chargers or batteries to avoid affecting battery performance or causing safety accidents.
6. When lithium batteries are not in use, they should be stored in a dry, cool, ventilated placeand avoid long-term storage.
7. If the lithium battery is damaged or leaks or other abnormal conditions occur, stop using it immediately and dispose of it properly.
1. Use an electric vehicle battery charger to repair the battery:
The charging voltage and current of the electric vehicle charger are related to the model and specification of the electric vehicle battery. Therefore, the battery cannot be repaired with a car charger. You must use a higher wattage electric vehicle charger. Example: 1. The electric vehicle battery specification is 48v20AH, which can be charged and repaired with 60V20AH battery charger; 2. The 48v12AH battery, which can be charged and repaired with a 48v20AH battery charger.
Repair principle: The main reason for the decline in battery performance is that the battery has beenvulcanized. After-sales battery maintenance by battery manufacturers, various battery repair instruments and restorers on the market all use high-quality materials. electric charging equipment, using "high current, high voltage" to remove sulfide and repair batteries. Therefore, an ordinary charger with higher power can charge the battery with sulfur removal and repair function.
2. Other methods:
Use hot water from a dry cleaner to repair the battery
The majority of electric vehicle users realize that electric vehicles cannot travel long distances. . Add distilled water to maintain and repair the battery. However, pure water and various replenishment fluids and repair fluids sold on the market have a short-term effect on the battery, and then accelerate the decline ofe battery performance and are discarded in advance. Because the metal ions and impurities contained in these liquids corrode the battery plates, cause the battery to self-discharge and the active materials to fall off, resulting in the permanent disposal of the battery.
Detailed information:
Lithium electric vehicle charging instructions
1. Place it to recharge:
The battery has some remaining power before leaving the factory, and it can also be driven short distances after the electric vehicle is sold. After the first trip, the battery must be charged for the first time. It is recommended to carry out the first charge for a longer duration (8 to 12 hours).
The battery should be charged in time after use and should not be stored at a loss. If the battery has not been used for plAfter two months, the battery should be fully charged. If the battery is left for more than 5 months, it must undergo a charge and discharge cycle.
Use the battery regularly and charge it regularly when used normally or left for a long time. Ensures the best practical effect of the battery and prolongs its service life.
2. Normal charging:
The normal battery charging method is as follows:
First connect the charger and the battery to be charged, then connect the power plug of the charger to 220V AC power supply. (This connection sequence will prevent sparking when plugging and unplugging the charging plug.) When the device is turned on, the charger displays a red light to indicate that the battery is charging normally. Charging may take 6-8 hours. .
3. Charger Notes:
In order to ensure the charging safety of the batteryerie and ensure battery life, use a special charger. If the charger is lost or damaged, please purchase it from the corresponding dealer. Do not use lead chargers or other forms of chargers for charging.
Baidu Encyclopedia-Lithium Battery