There are several types of lithium batteries

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 service life (600-700 times); good discharge rate.

Disadvantages: Safety performance is the worst of the three (especially those with steel hulls); At present, China's battery industrys 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 discharged 20 times)

Detailed information :

Identification method:< /p>

1 Compare the battery capacity. The general nickel-cadmium battery is 500 mAh or 600 mAh, and the nickel-hydrogen battery is only 800-900 mAh; and the capacity of lithium-ion mobile phone batteries is generally between 1300-1400 mAh, so the usage time of thea 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 operating time of the lithium-ion cell phone battery you purchased is not as long as advertised or specified in the manual, it may be counterfeit.

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 battery pack charging voltage. If a nickel-cadmium or nickel-hydrogen battery pack is used to simulate a lithium-ion cell phone battery pack, it must be composedmade from 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.

The hand should be smooth and non-obstructive, with appropriate tightness and fit in the hand. The fit is good and the lock is reliable; There are no obvious scratches, black or green spots on the hardware. If the battery of the cell phone we buy does not conform to the phenomenonabove, we can initially conclude that it is a 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 battery.

6 Observe load anomalies. Generally, genuine cell phone batteries must have an overcurrent protector atinside, which automatically breaks 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 materials:

The most critical element regarding new energy vehicles is the battery. Battery safety and endurances lithium greatly affect the continued use of new energy vehicles.

At present, the production technology of domestic battery manufacturers is at the confidential stage. Generally, customers judge the quality of new energy vehicle batteries by their subsequent use.

The filtration of lithium batteries of new energy vehicles requires the use of professional electrolyte filtration equipment. Common electrolyte filters are divided into the following types:

Summary of specifications of electrolyte filter elements

1. 5 inch single-core filter element Material: 316 stainless steel, flow rate: 0.5-1T/hour, filtration precision: 0.1-600um, maximum operating pressure: 1MPa, pressure difference operating temperature: 0.01-0.0.6MPa, operating temperature: 0-150 ℃

2. 10-inch single-core filter element

Mamaterial: 316 stainless steel, flow rate: 1-1.5T/hour, filtration precision: 0.1-600um, maximum operating pressure: 1MPa, operating pressure difference: 0.01-0.0, 6MPa, operating temperature: 0-150℃

3. 20 inch core filter element