Charging lithium battery: Pearl in battery battery

Charging lithium battery: Pearl in battery battery

A few days ago, the Royal Swedish Royal Academy gave the Nobel Chemical Award to three scientists who made outstanding contributions to lithium-ion batteries.. Among them, Hui Ting Um uses a titanium sulfide as a positive material, metal lithium as a negative electrode material, and makes the world’s first lithium ion battery.

. Gudarv was repeated experimental and verified, found that lithium cobaltate was more suitable for storing lithium ions than sulphide, further improved the voltage platform of the battery..

On this basis, Yoshino is based on the lithium ion instead of pure lithium, enhances the safety of the battery, so that the lithium ion battery has practical application conditions.. The reason why the lithium ion battery is called a lithium-ion battery is because the lithium is present in an ionic form, whether in the electrolysis of the battery or in the electrolyte.

. Compared to other energy storage batteries, the highlights have high storage energy, no memory effect, not take care of the battery before charging, and high energy conversion rate, low discharge rate, long service life, etc..

With the lithium-ion batteries produced by Sony, Japan in 1991, the lithium-ion battery quickly realized a wide range of applications, and the mainstream energy storage form of portable electronic equipment, new energy vehicles, smart grids.. Due to the unique technical advantages, the lithium-ion battery is currently widely used in the field, becoming an indispensable source of energy.

. Base energy storage. Plateau, border, island is far from the rear, energy supply line long, development and utilization wind energy, solar energy, etc.

can become an inevitable trend. With lithium-ion battery energy, not only solve problems such as renewable energy power generation and poor stability, but also have functions such as peak-filling valley, which is a key technique to solve remote base energy security..

However, there is a problem that the lithium-ion battery has poor security in large-scale energy storage applications. When the firepower is blown, it is easy to smoke, fire, and even cause explosion..

Field power supply. The square storage system of the lithium-ion battery has no problem with diesel generators, and the infrared characteristics is obvious, which significantly enhances the concealedness and survival capacity of electricity security..

However, for the power supply environment of the field, the lithium-ion battery has a problem of low temperature performance, such as at -40 ¡ã C, half of the charge and discharge capacitance of the battery is insufficient at room temperature conditions.. High energy power supply.

New high-energy applications such as electromagnetic guns, lasers, high-power microwaves are increasing, and the directional output power is getting bigger and larger.. Lithium-ion battery with excellent magnification charge and discharge power can be used for high energy power.

However, with the development trend of high-energy miniaturization, the volume power density of existing lithium-ion batteries still needs to be further improved to meet vehicle and airborne miniaturization, lightweight requirements.. Unmanned power source.

At present, the mainstream small and micro-unmanned equipment use lithium ion batteries as an important power supply.. However, the drone of the power source is usually in half an hour, which is the biggest problem for unmanned equipment.

. power supply. With the intelligent trend of equipment, visualization, and intelligent trend, the demand for electric energy is rapidly added.

Lithium-ion battery is the main power supply of current equipment. However, as the level of informationization is continuously improved, the soldiers have to carry more battery during the implementation of the task..

At present, high-energy density power is a bottleneck technology that restricts future soldiers’ continued. Therefore, the study of future lithium-ion batteries will be concentrated in the following directions. First, high energy density.

As the energy density is increasing, the battery contained in the same volume or weight is larger, and the battery life and the endurance of the drone, underwater subregulations, equipment, etc.. Second, high security.

By using solid-state electrolytes instead of conventional combustible organic electrolyte, lithium-ion batteries have higher safety, will not cause secondary explosion after being hit by the gunfire, meet large bases, energy storage codes, etc., high-capacity, high safety energy storage need. Third, high environmental adaptability.

Improve the diffusion capability of lithium ions under the electrode material under low temperature conditions and the electrical conductivity of the electrolyte, enabling the battery to charge and discharge normally under severe cold, thereby effectively enhance the field power station and the like.. Fourth, high power density.

By carrying out related research, the fast charge and discharge performance of lithium ion batteries is constantly increasing, thereby meeting the pulse power requirements of new energy instantaneous release.. Energy is the material foundation and power source of modern war, from large bases to the team, from the air-day aircraft to underwater equipment, lithium-ion battery plays a very important purpose.

With the continuous breakthrough of key technologies, lithium-ion batteries will have a broader application prospect in the field.

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