Advantages of soft pack battery for soft pack lithium battery

Soft pack battery is another kind of polymer battery. Compared with lithium ion battery, it has many advantages such as small size, light weight, high specific energy, high safety and flexible design.

1. Good safety performance

The soft pack battery is packaged in aluminum plastic film. In the case of safety hazard, the soft pack battery will only burst at most, unlike the steel shell aluminum shell.

2. Light weight

The weight of the soft pack battery is 40% lighter than the equivalent capacity of the steel shell lithium battery, which is 20% lighter than the aluminum shell battery.

3. Large capacity

The soft pack battery has a capacity of 10 to 15% higher than the steel shell battery of the same size, and is 5 to 10% higher than the aluminum shell battery.

4. Small internal resistance

The internal resistance of the soft pack battery is smaller than that of the lithium battery. At present, the internal resistance of the domestic soft pack battery core can be as low as 35 mΩ, which greatly reduces the self-consumption of the battery.

5. Flexible design

The shape of the soft pack battery can be customized according to the customer's needs, and a new battery model can be developed.

The advantages of the soft-pack lithium battery are good safety performance, light weight, large capacity, small internal resistance and flexible design.

The soft-pack lithium battery is simply a liquid lithium-ion battery with a polymer shell. The structure is packaged in aluminum plastic film, and in the case of a safety hazard, the soft pack battery will only burst at most.

1. The soft-packed lithium battery does not explode like the steel-shell aluminum-shell battery, so the safety performance is good.

2, the weight of the soft lithium battery is 40% lighter than the equivalent capacity of the steel shell lithium battery, 20% lighter than the aluminum shell battery, so the weight is light.

3. The capacity of the soft-packed lithium battery is 10-15% higher than that of the steel shell of the same size, which is 5-10% higher than that of the aluminum shell battery, so the capacity is large.

4. The internal resistance of the soft-packed lithium battery is smaller than that of the lithium battery. At present, the internal resistance of the domestic soft-pack battery core can be as low as 35mΩ, which greatly reduces the self-consumption of the battery.

5, the shape of the soft lithium battery can be customized according to customer needs, the development of new battery models.

The existing soft pack battery core models are few and cannot meet the market demand;

Developing new models is costly.

On the basis of fully considering the thermal conductivity, electrical conductivity and mechanical strength of the aluminum foil, a special blank is used to manufacture the high-precision imported rolling mill with a wire plate type instrument and a Siemens control system in a clean dust-removing plant environment. Features: 1. The aluminum foil rolling mill equipment is equipped with advanced AGC (Siemens thickness automatic control system) and AFC (Siemens automatic control system) system to achieve precise control of plate type and thickness. 2. Select aluminum foil blanks, strictly Control the hydrogen content of the billet, the amount of non-metallic slag and the grain size, and ensure the quality of the product from the raw materials; 3. Adopt advanced on-line degreasing technology to ensure the cleanliness of the aluminum foil on the basis of ensuring the mechanical strength of the aluminum foil.

Surface treatment of battery conductive substrates with functional coatings is a breakthrough technological innovation. The carbon-coated aluminum foil/copper foil is a uniform and fine coating of the dispersed nano-conductive graphite and carbon-coated particles in aluminum foil/ on the copper foil. It provides excellent static conductivity and collects micro-current of active material, which can greatly reduce the contact resistance between the positive/negative electrode material and the current collector, and improve the adhesion between the two, reducing the bonding. The amount of agent used, in turn, results in a significant increase in the overall performance of the battery. The coating is water-based (aqueous agent system) and oily (organic solvent system).

Performance advantage

Performance advantages of carbon coated aluminum foil / copper foil

1. Significantly improve battery pack consistency and significantly reduce battery composition. Such as:

· Significantly reduce the dynamic internal resistance increase of the battery;

· Improve the consistency of the differential pressure of the battery pack;

· Extend battery life;

· Significantly reduce the battery composition.

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