1. Lithium batteries are divided by appearance: square (such as commonly used mobile phone battery cells) and cylindrical (such as 18650) lithium batteries;
2. Lithium battery with aluminum case, lithium battery with steel case, soft battery;
3. Lithium batteries are divided into positive and negative electrode materials (additives): lithium phosphate (LiCoO2) or lithium manganate (LiMn2O4) battery, lithium iron phosphate battery, disposable lithium manganese dioxide battery; another branch: lithium ion LIB, polymer PLB
IV. Divided into different performances and uses:
Disposable --- Lithium manganese battery. -- 3 volt coin cell battery
High capacity (high deck) -- used in digital mobile phone products
High rate --- used in electric cars, power tools and model airplaneses
High temperature; ---miner's lamp, interior lighting, built-in machine emergency power supply;
Low temperature ---outdoor environment, northern (winter) Antarctica;
The The main lithium batteries used in vehicle batteries in China's electric vehicle industry are three types of iron-lithium, manganese-lithium and ternary.
1 Lithium Manganese
Advantages: cheap price; good low temperature performance, discharge efficiency over 90% at minus 20 degrees;
Disadvantages: poor performance at high temperatures; low lifespan (generally normal lifespan is about 300-400 times the low specific capacity in grams (112); starts quickly), has a great impact on this type of battery)
2 Ternary
Advantages: The price is the most expensive of the three high-capacity materials (150. can save; volume); good lifespan (600 to 700 fois); good discharge rate.
Disadvantages: Safety performance is the worst of the three (especially those with steel hulls); At present, China's battery industry is not yet mature enough to master this material and does not use it much. ?
3 Lithium iron?
Advantages: average price; medium capacity (130); high lifespan (about 1500 times); good high temperature performance
;Disadvantages: Price is not cheap; low temperature performance is not good; its superior performance can only be fully reflected in electric vehicles (can be fully charged in 6 minutes and can be discharged 20 times)
Detailed information:
Identification method:
1 Compare the battery capacity. The general nickel-cadmium battery is 500 mAh or 600 mAh, and the nickel-hydrogen battery is onlyonly 800 to 900 mAh; and the capacity of lithium-ion mobile phone batteries is generally between 1300-1400 mAh, so the usage time of the lithium battery after being used. fully charged is about 1.5 times that of nickel-hydrogen battery, or about 3.0 times that of nickel-cadmium batteries.
If you find that the working time of the lithium-ion mobile phone battery you purchased is not advertised or specified in the manual,If it is too long, it may cause problems. act as an infringement.
2 Look at the plastic surface and the plastic material. The original battery has a uniform wear-resistant surface and is made of PC material, which is not fragile. Counterfeit batteries do not have a wear-resistant surface or are too rough and are made from recycled materials that are prone to brittleness.
3 Measure the charging voltage of the whiteoc battery. If a nickel-cadmium or nickel-hydrogen battery pack is used to simulate a lithium-ion cell phone battery pack, it must be made up of 5 individual cells. The charging voltage of a single battery generally does not exceed 1.55V and total. The battery pack voltage does not exceed 7.75 V. When the battery pack is when the total charge voltage is less than 8.0 V, it may be a nickel-cadmium or nickel-hydrogen battery .
4 For original batteries, the color and texture of the battery surface should be clear, uniform, clean, without obvious scratches or damage; the battery brand should be printed with the model, type, rated capacity of the battery. standard voltage, positive and negative Extreme Logo, manufacturer name.
It must be smooth and unobstructed, have a suitable seal, fit the hand well and have reliable locking; the material does notit does not have obvious scratches or black or green spots. If the battery of the cell phone we buy does not conform to the above phenomenon, we can initially conclude that it is fake.
5 Many mobile phone manufacturers have also made efforts to improve their know-how and make counterfeiting of mobile phones and accessories more difficult from their own perspective, thereby further curbing the proliferation parallel and counterfeit imports. Generally, ordinary mobile phone products and their accessories should have a consistent appearance.
So when we install the battery of the cell phone we bought, should we carefully compare the body and the bottom case of the battery? If the color matches, it is an original battery. Otherwise, the battery itself is dull and dull, and it may be a fake batlaugh.
6 Observe load anomalies. Generally, genuine cell phone batteries must have an overcurrent protector inside, which automatically cuts off the circuit when an external short circuit causes excessive current to avoid burning or damaging the phone. Lithium-ion batteries also have an overcurrent protection circuit, which can be; used when non-standard electrical appliances are used.
When the power current is too large, the power will be automatically cut off, resulting in charging failure. When the battery is normal, it can automatically return to the conductive state. If during the charging process we find that the battery seriously overheats, smokes or even explodes, it means that the battery must be fake.
Reference documents:
Baidu Encyclopedia - lithium battery