How do you seal the lithium ion battery cases and covers?

Lithium battery can be soft packaging and metal packaging. Flexible packaging mainly is aluminum membrane. Its sealing way mainly through vacuum heat sealing machine; Metal packing mainly divided into aluminum and steel shell packaging. Its sealing way is mainly through the laser spot welding seal.

Sealant is commonly used in lithium-ion batteries PACK lithium battery PACK, main is to seal glue daub is on the edge of the battery have crack, crevice seal up, lithium batteries more waterproof sealant is mainly used in batteries.

Lithium battery sealant on the battery PACK finished product daub more smooth more level off, the whole finished product looks more beautiful appearance, will be virtually increase the battery in a small class,

Fallow seal has been committed to lithium ion batteries sealing technology solutions, lithium ion battery: is a secondary battery (rechargeable batteries), it is mainly rely on lithium ions move between the positive and negative to work. In the process of charging and discharging, Li + embedded back and forth between the two electrodes and embedded off: when charging, Li + embedded from the anode, after anode, electrolyte embedded in the cathode in the rich lithium state; Discharge is the opposite. Materials containing lithium batteries are used as the electrode, is the representative of modern high-performance batteries. Lithium batteries are divided into lithium battery and lithium ion batteries. Mobile phones and laptops are lithium ion battery, usually people commonly known as its for lithium-ion batteries, and the true lithium battery, because of the large risk rarely applied in the daily electronic products. Lithium ion batteries by SONY of Japan in 1990 the first successful development. It is to put the lithium ions embedded carbon (petroleum coke and graphite) formed in the cathode (traditional lithium-ion batteries use lithium or lithium alloy as negative).The anode materials commonly used LixCoO2, also use LixNiO2 and LixMnO4, electrolyte with LiPF6 + ethylene carbonate (EC) + dimethyl carbonate (DMC).Petroleum coke and graphite as the cathode materials, non-toxic, and abundant resources, lithium ion embedded carbon, overcome the lithium of highly active, solve the security problems of the traditional lithium battery, the positive LixCoO2 on charge and discharge performance and life span could reach a higher level, make the cost reduction, increased for the comprehensive performance of lithium ion batteries. Lithium ion battery of the 21st century will be a big market. Lithium ion secondary battery charge and discharge equation for LiCoO2 + C = Li1 - xCoO2 + LixC [1] the difference between the editor lithium ion battery easily confused with the following two kinds of battery: (1) : lithium-ion batteries with metal lithium as negative.(2) lithium ion battery: using nonaqueous organic liquid electrolyte.(3) lithium ion polymer battery: by polymer gel liquid organic solvent, or directly with solid-state electrolyte. Lithium ion batteries with graphite cathode carbon materials commonly.

Lithium battery resistant rubber seal rubber seal is introduced:

Fallow rubber seal perfluorinated ether at present all the best rubber elastomer seals, nearly as many as 2000 kinds of chemical medium, including organic acids, alkali, alcohols, ketones, ethers, nitrogen compounds, hydrocarbons, hydrogen halide, furan, aldehyde, oil and water vapor, etc. The highest temperature can reach 327

SONY of Japan in 1992 invented the carbon materials as anode, with lithium compounds as the anode of lithium battery, in the process of charging and discharging, no metal lithium exists, only lithium ion, that is the lithium ion battery. Subsequently, lithium ion batteries have revolutionized the face of consumer electronics products. Such as cobalt acid lithium as the anode material of battery, is still the main power supply of portable electronic devices.

Padhi and Goodenough found 1996 has olivine structure of phosphate, such as lithium iron phosphate (LiFePO4), more security than traditional anode materials, especially high temperature resistance, resistance to overcharge performance than traditional lithium-ion battery materials. Therefore, has become the current mainstream of large current discharge power lithium battery anode material.

Throughout the history of the development of battery, we can see that the three characteristics on the development of battery industry in the world, and one is the rapid development of green environmental protection battery, including lithium ion batteries, nickel-metal hydride batteries, etc.; Two is a battery to battery, it conforms to the sustainable development strategy;3 it is battery further development in the direction of small, light and thin. In the commercialization of rechargeable batteries, lithium ion battery has the highest specific energy, especially polymer lithium ion batteries, you can thin type of rechargeable battery. Because of the volume of lithium ion battery is high specific energy and mass, rechargeable and pollution-free, possess three characteristics of current battery industry development, so have faster growth in the developed countries. Telecom, the development of information market, especially the use of mobile phones and laptops, brought market opportunity to lithium ion batteries. And the polymer lithium ion battery in the lithium ion battery with its unique advantages in security, will gradually replace liquid electrolyte of lithium ion battery, and become the mainstream of the lithium ion battery. Polymer lithium ion battery has been hailed as a "battery" in the 21st century, will set up a new era of battery, the development prospect is very optimistic.

In March 2015, Japan's sharp and Kyoto university professor Tian Zhonggong together successfully developed the service life of up to 70 years of lithium ion batteries. The manufacture of lithium ion battery longevity, the volume of 8 cubic centimeter, cycle count up to 25000 times. And sharp says the longevity of lithium ion battery charge and discharge after 10000 times actually, its performance is still stable.

A kind of sealing components and contains the seal components lithium battery, the positive column of the sealing components including set in turn, cover and inner pressure ring, sealing components include sealing ring, set of pure aluminum and pure aluminum belt. Cover plate and the inner pressure ring opening a center hole of axle load and seal nested on the hole of cover plate, the positive column has the first and second column, and the second column wear in sealing ring hole, and the second column end and inner pressure riveting, the first column and second pole through the sealing ring insulation and sealing between column and plate, sets of internal pressure ring, pure aluminum by sealing ring insulation between pure aluminum shell and cover plate, pure aluminum belt connected to the set of pure aluminum. Using pure aluminum wrap internal pressure ring, at the same time bring pure aluminum and pure aluminum sleeve to connect, thus ensuring the sealing components located in the interior of a lithium battery to the whole aluminum structure, the structure design, can better solve the problem of lithium battery storage in high temperature environment.

Shell cover is achieved by laser welding seal, shell cover fusion by laser melting. Depending on the shell structure can be divided into overhead welding, welding.

Is a steel shell and aluminum shell, or soft package, if it is aluminum shell is laser welding, steel shell with sealing machine, soft bag is using vacuum heat sealing machine.

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