What is a 12V lithium battery?
The 12v lithium battery is a lithium battery pack composed of 3 or 4 lithium batteries in series. The capacity of the battery is determined by the capacity of a single cell and the number of cells connected in parallel. It is a new type of safety and environmental protection rechargeable battery.
12V lithium battery classification
According to different materials and packaging, 12V lithium batteries are divided into 12V lithium-ion batteries, 12V lithium iron phosphate batteries, 12V cylindrical lithium batteries, and 12V polymer lithium batteries.
1. 12v lithium-ion battery
12V lithium-ion batteries are connected in series with 3 or 4 lithium batteries. In the combined battery pack, the capacity of the battery is determined according to the capacity of a single cell or the capacity of the batteries connected in parallel, which is a new type of safe and environmentally friendly battery.
Battery capacity
There is no standard capacity for the capacity. It is determined according to the specific requirements of electrical appliances or equipment. The general capacity is: 2200mah, 5AH, 10Ah, and some electric vehicles have a capacity of up to 20AH or 50AH. The more batteries are connected in parallel, the greater the capacity.
Volume
The volume of the 12V lithium battery should be determined according to the battery capacity, and there is no uniform specification. The larger the battery capacity, the larger the volume.
Weight
Nowadays, many devices require lithium batteries with larger capacity and lighter weight. For example, electric vehicles used lead-acid batteries in the past. Now many electric vehicles have become lithium batteries because lithium batteries have a large capacity, lightweight and small size.
Charge and discharge current
The charge and discharge current of a lithium battery is determined according to the power of the device. On the basis of constant voltage, the greater the power of the device, the greater the current that needs to be output.
2. 12V lithium iron phosphate battery
The 12V lithium iron phosphate battery is a battery pack composed of four lithium iron phosphate batteries connected in series. Lithium iron phosphate battery is a kind of lithium battery using lithium iron phosphate (LiFePO4) as the positive electrode material. The nominal voltage is 3.2V, the maximum charging voltage of the single cell is less than 3.9V, and the minimum discharge voltage is greater than 2.0V.
Advantages of 12V lithium iron phosphate battery
The 12V lithium iron phosphate battery has a long life. Under the same conditions, lithium iron phosphate batteries can be used for 7 to 8 years.
Safe to use. The 12V lithium iron phosphate battery has undergone strict safety tests and will not explode even in a traffic accident.
Fast charging. Using a dedicated charger, the battery can be fully charged in 40 minutes at 1.5C.
The 12V lithium iron phosphate battery is resistant to high temperatures, and the hot air value of the 12V lithium iron phosphate battery can reach 350 to 500 ℃.
The 12V lithium iron phosphate battery is environmentally friendly, non-toxic, non-polluting, and has a wide range of raw materials and low prices.
3. 12V polymer lithium battery
The polymer lithium battery is developed on the basis of a liquid lithium-ion battery. Its positive and negative electrode materials are the same as liquid lithium-ion batteries, but it uses gel electrolyte and aluminum plastic film as outer packaging. Polymer lithium battery also Called lithium polymer battery, also known as a polymer lithium battery. The 12V polymer lithium battery has a nominal voltage of 12V and is widely used in digital products, power tools, special wearable devices, and other fields.
Advantages of 12V polymer lithium battery
Higher energy density
Better security
Flexible design, the shape can be customized
Good discharge characteristics
Simple protection board design
12V lithium battery price
The price of a 12V lithium battery is mainly composed of three major components: the battery cell, the protection board, and the housing. At the same time, due to the power consumption and current of the electric appliance, the material of the connecting piece between the batteries (conventional nickel sheet, molded nickel sheet, Copper-nickel composite sheet, jumper sheet, etc.) will affect the cost, different connectors (such as aviation plugs, from more than ten yuan to thousands of yuan) may also have a greater impact on the cost, different PACK The process also affects the cost.
Factors affecting the price of 12V lithium battery
Battery Cell
According to different cathode materials, lithium batteries have lithium manganese oxide (3.6V), lithium cobalt oxide (3.7V/3.8V), lithium nickel cobalt manganate (3.6V), lithium iron phosphate (3.2V), lithium titanate (2.3V/2.4V) and other battery cells with different material systems, the voltage platform, safety factor, number of cycles, energy density ratio, working temperature, etc. are different, so the price will be different.
Brand
Different lithium battery brands have obvious price differences, mainly because the quality (safety, consistency, stability, production process, etc.) of each brand's battery is basically proportional to the price.
Capacity
When the voltage of a 12V lithium battery is determined, the larger the capacity, the higher the cost and the higher the price.
Protection board quality and circuit design
High-quality lithium batteries use high-quality electronic components and protection boards, as well as multiple protection circuit designs, which not only perfect the charge and discharge circuit, but also have multiple designs such as constant temperature and constant voltage, overcharge, over-discharge, overcurrent, and short circuit. You and your equipment create a safe use environment, so the price will be affected by these two factors.
12V lithium battery pack
The 12V lithium battery pack is a lithium battery pack composed of 3 or 4 lithium batteries connected in series, and several lithium batteries are connected in parallel. Therefore, the 12V lithium battery capacity can be customized.
The common capacity of 12V lithium battery pack
4Ah, 5Ah, 7Ah, 8Ah, 9Ah, 10Ah, 12Ah, 17Ah, 18Ah, 20Ah, 30Ah, 40Ah, 50Ah, 100Ah, 200Ah, etc.
12VDC lithium battery
The 12V DC lithium battery is converted by a step-up/step-down circuit to stabilize the output voltage of the lithium battery at about 12V to meet the use of constant voltage working equipment. It is a standard DC battery with universal and compatible characteristics. Change its certain characteristics to meet the use of different electrical equipment.
12V lithium battery application field
Lighting industry: Solar street lights, solar insecticidal lights, solar garden lights, solar energy storage power supplies, etc.;
Power field: Electric tools, robots, AGV, vacuum cleaners, electric sprayers, RC fields, etc.;
Consumer Electronics: Bluetooth audio, loudspeaker field, LED lamps and various electronic equipment, etc.;
Energy storage field: Communication base stations, data centers, home energy storage, wind photovoltaic energy storage, etc.;
Special field: Medical equipment, security power, special equipment, etc.
