Novel liquid polymer lithium ion battery

Abstract

The invention relates to the technical field of a lithium ion battery, and specifically discloses a novel liquid polymer lithium ion battery which comprises an aluminum shrinkage film, wherein a pole group is arranged in the aluminum shrinkage film, and consists of a positive plate and a negative plate; both the surfaces of the current collectors of the positive plate and the negative plate are coated with electrode sizing agent; and the two positive plate surfaces coated with the electrode sizing agent are respectively provided with a polyvinylidene fluoride (PVDF) / XB film. The novel liquid polymer lithium ion battery has the advantages that the PVDF / XB film is adopted to produce the battery, the film has small characteristic thickness, high porosity, small ion resistance, no shrinkage at high temperature, and excellent air permeability; and the novel liquid polymer lithium ion battery has excellent antioxidant and anti-polluting performances, has good affinity to the electric liquid, large imbibition amount, strong coating capability, better electrochemical performance, high efficiency, large capacity and good cycle performance, the power batter capacity can be increased by times, and moreover, the battery resistance is small, and accordingly, the whole electrical property of the lithium ion battery is greatly improved.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a novel liquid polymer lithium ion battery. Background technique [0002] At present, compared with other types of batteries such as lead-acid and nickel-cadmium, lithium-ion batteries have many advantages such as large specific capacity, high working voltage, fast charging speed, wide working temperature range, long cycle life, small size and light weight. It has been widely used in mobile phones, notebook computers, electric tools and other fields, and its application range is becoming wider and wider. [0003] With the expansion of the scope of use of lithium-ion batteries, people are used to calling the chemical power sources used in power supply systems power batteries, such as power tools, electric vehicles and other fields, the conditions of use of power batteries are complex, and batteries are also required High capacity performance and power performance, a...

AI Technical Summary

Problems solved by technology

Use a high-porosity and thin diaphragm battery with small internal resistance and high power. On the contrary, the internal resistance of the battery is large, the battery power is small, and the cycle life is short

Especially if the internal resistance of the power lithium battery is large, not only the power of the battery will not increase, but the life of the battery will be greatly affected. rise to explode

[0009] The current power battery separator is generally made by wet and dry method. When such a separator is used in the battery, the internal resistance of the battery will be large, resulting in a decrease in the power of the battery, and the battery's capacitance is relatively low, which cannot adapt to people's demand for power lithium. High power and high capacity requirements of batteries

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