Green energy batteries are divided into three types: one is NCMternary lithium battery (representing the manufacturer "CATL"); a ternary lithium battery (representing the manufacturer "Panasonic"), and the last one is a lithium iron phosphate battery (representing the manufacturer "BYD" ).
NCM and NCA ternary lithium batteries can be classified into one category, and most models on the market are basically equipped with this type of battery. An important characteristic of ternary lithium batteries is that they have high energy density. Therefore, the most intuitive effect is to have longer battery life. The downside is that the demand for cobalt is high, but in order to reduce costs, battery manufacturers will reduce cobalt and increase nickel. However, this will cause deterioration of thehas battery stability, so some cheap new energy vehicles are prone to spontaneous combustion.
The lithium iron phosphate battery has low energy density, short battery life and occupies a large space. But lithium iron phosphate batteries have a long lifespan. Normally, lithium iron phosphate batteries start to break down after almost 10 years, so they need to be replaced. The lifespan of ternary lithium battery is shorter than that of lithium iron phosphate, generally about 6 years.
Maintenance of new energy batteries:
1. It is strictly prohibited to lose energy during storage
It is strictly prohibited to lose energy during battery storage. Exhausted battery means the battery is not charged in time after use. When the battery is stored in an exhausted state, it is easy for sulfate to blockion channels, resulting in insufficient charging and reduced battery capacity.
2. Regular inspection
During use, if the range of an electric vehicle suddenly decreases in a short time, it is likely that at least one of the battery packs Short circuit phenomena such as battery rupture, softening of the plates and falling of the active material from the plate occurs. Therefore, you should contact a professional battery repair agency in time for inspection, repair or assembly. It can relatively extend battery life and save money to the greatest extent.
Are the 4 green batteries lead or lithium?
The differences between lithium polymer batteries and ordinary power banks are as follows :
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1. Ordinary external battery: the lithium-ion battery, commonly appeeled “lithium battery”, is currently the battery system with the best overall performance. The negative electrode of lithium-ion batteries is a carbon material, such as graphite. The positive electrode is a transition metal oxide containing lithium.
2. Lithium polymer batteries: Lithium polymer batteries are a new generation of batteries that entered the market in large quantities in 1999. Lithium polymer batteries are basically the same as lithium ion batteries, except that the electrolyte is a solid polymer instead of a liquid electrolyte.
3. Lithium polymer batteries have a larger capacity than lithium batteries in the same volume, and there is no memory effect (lithium ion batteries still have a memory effect, but they are smaller). Lithium polymer battery is actually a gel-like substance that is easy to process into variouses shapes and does not contain harmful heavy metal elements. Batteries".
Detailed information:
The three elements of a general battery: positive electrode and negative electrode and electrolyte The so-called lithium polymer battery refers to a battery system that uses polymer materials in at least one or more of the three elements. lithium polymer battery systems, polymer materials are mainly used in the positive electrode and electrolyte.
The cathode material uses conductive polymers or inorganic compounds used in lithium batteries. -ion general. The negative electrode often uses lithium metal or lithium carbon interlayer compounds, and the electrolyte uses solid or colloidal polymers or organic electrolyte.no excess electrolyte in lithium polymer, it is more reliable and stable.
Lithium polymer batteries use file alloy as the positive electrode, and polymer conductive materials are used. as the negative electrode, and an organic solvent is used as the electrolyte. The specific energy of lithium polyaniline battery can reach 350 W.h/kg, but the specific power is only 50-60 W/kg, and the operating temperature is -40-70 degrees. The service life is about 330 times.
Compared with lithium-ion batteries, the characteristics of lithium-polymer batteries are as follows:
1. is improved, but it is not completely improved.
2. Can be made into a thin battery: with a capacity of 3.6V 250mAh, its thickness can be as thin as 0.5mm
3. The battery can be designed in different shapes.
4. Can be transformed into a single bathigh voltage: A liquid electrolyte battery can only achieve high voltage by connecting multiple batteries. in series, while a polymer battery can be made into a multi-layer combination in a single battery because it does not have high voltage liquid
5. The discharge capacity is theoretically 10% higher than that of lithium. (Li-ion batteries of the same size.
Li-polymer batteries, also called lithium-ion batteries) have many advantages such as high specific energy, miniaturization, ultra-thin, lightness and high safety. Based on these advantages, lithium polymer batteries can be made into batteries of any shape and capacity to meet various needs to meet the needs of this product. They are packaged in aluminum-plastic packaging and any internal problems may show up immediately. the outer packaging. Evenif there is a safety risk, it will not explode, but only inflate.
In polymer batteries, the electrolyte plays the dual function of separator and electrolyte: on the one hand, it. separates the positive and negative electrode materials like a separator to avoid self-discharge and short circuit inside the battery, and on the other hand, it conducts lithium ions between the positive and negative electrodes like an electrolyte. Polymer electrolytes not only have good electricity. conductivity, but also have the characteristics of light weight, good elasticity and easy forming that are unique to polymer materials.The film and other characteristics also conform to the development trend of light, safe, efficient chemical energy sources and respectful of the environment.
a. Lithium core capacity indication circuit
Lithium core capacity indication circuitThe lithium core is composed of the XC61CC series voltage monitoring chip.
b. Battery core protection circuit
The battery core protection circuit consists of three parts: overcharge protection, overdischarge protection and overheat protection. -The restoration fuse constitutes triple protection, greatly improving the safety of lithium cores.
c. Charging management circuit
The charging management circuit uses CN3066, which divides the charging process into four parts: trickle charging, constant current charging, constant voltage charging and maintenance charging, therefore mobile power supplies can store energy to the greatest extent.
DC-DC boost circuit
The DC-DC boost circuit uses the MAX1771 integrated chip, which can maximize the release of lithium core capacity within a safe range for reach theobjective. for the purpose of powering digital equipment.
e. Function expansion circuit
Function expansion covers common needs involved in outdoor activities, including high-brightness emergency night lighting, outdoor anti-theft security alarms and camping mosquito repellent.
Reference materials:
The four green rectangular batteries are lead acid batteries.
Lead-acid battery is a battery whose electrodes consist mainly of lead and its oxides, and the electrolyte is a solution of sulfuric acid. In the discharged state of a lead-acid battery, the main component of the positive electrode is lead dioxide and the main component of the negative electrode is lead; in the charged state, the main components of the electrodes positive and negative are both lead; sulfate.
Lithium batteries are very expensive and generally rare. However, there are also small lithium batteries with green cylinders.