Polymer lithium battery and lithium battery which is better

Source: 2020 - 04 - 02 14:13 hits: polymer lithium battery and lithium battery which better polymer lithium battery technology has been mature enough, can be mass production, sales in the fast-growing, but still can't and has more than 800% of liquid lithium battery compared to the number of stores. Due to various reasons, polymer lithium battery prices are higher than the density of its liquid lithium electricity, portable electric change competition method, however, especially lithium polymer battery, portable electric planning vision can support custom any type of value and standard ( 4 mm thickness is lower than, for example, superior performance, large standard cell) Polymer battery is being more and more mobile phone, mobile DVD, so planners know, polymer lithium battery manufacturers still have confidence, believe in polymer lithium battery will appear. Can be seen from the phone flip trend of polymer lithium-ion battery. Especially in the past two years, mobile power supply, open market has been widely recognized by polymer lithium battery is lithium battery of a new generation of alternative products. From the battery, lithium batteries, lithium batteries can be divided into the first generation of steel shell of the second generation aluminum shell lithium-ion batteries, the third generation of polymer lithium battery. As the package of polymer battery/aluminum composite membrane, the film is only 0. 3 meters thick, the biggest room in the internal response data can be full of, aluminum composite membrane shell is lighter than steel shell, aluminum composite membrane can stop, help reduce pressure on the battery adverse reaction, can avoid explosion. Polymer lithium battery capacity is the largest and the most light in weight, safety, the best batteries. Lithium ion battery and lithium polymer battery has its advantages and disadvantages. A, 2, 1, the advantages of lithium polymer batteries, lithium polymer battery choose aluminous model flexible packaging in the structure, different from the metal shell liquid battery, once has the security hidden danger, the liquid battery will brief explosion, while the polymer battery will only courage. 2. Ultra-thin. In general, liquid lithium battery using custom shell first, and then insert the positive and negative material. 3. With polymer electrolyte battery does not need metal case for outer packing. Lithium-ion polymer battery lighter than steel shell of the same capacity lithium battery pack battery 40% lighter than aluminium to 20%. 4, shape, flexible: manufacturers don't have to be limited to the standard shape, can make the size of the economic right. Polymer lithium battery can be comparable to the standard steel shell of the battery capacity is higher than about 10%, higher than the aluminum shell of the battery capacity is about 5-10%, become the first products of mobile phones and tablets with polymer lithium battery. 5, the choice of polymer materials, the battery will not burst, the battery itself has a satisfactory security, so the polymer battery maintenance board planning can save like steel shell lithium battery internal PTC and fuse, and save the cost of the battery. Ii. Disadvantages: 1 of lithium polymer batteries. Battery manufacturing cost is higher than lithium battery, the electrolyte system is difficult to purify. 2, maintenance line control, overcharge or overdischarge can cause damage to the reversibility of chemicals, which seriously affect the battery life. Iii. Disadvantages: 1 of lithium battery. High internal resistance of lithium ion batteries. As a result of the lithium ion battery electrolyte is a kind of organic solvent, its conductivity is far lower than the nickel cadmium battery and water electrolysis liquid of nimh batteries, so the lithium ion battery internal impedance is about nickel cadmium battery and 11 times of nimh batteries. Such as 18 mm and a diameter of 50 mm long monomer battery impedance is about 90 Ω. 2. Working voltage changed a lot. When the battery discharge to 80% of the rated capacity, nickel cadmium battery voltage change smaller ( About 20%) , and lithium ion battery voltage change is bigger, About 40%) 。 For battery-powered devices, it is a serious weakness, but because of lithium ion battery discharge voltage change is very big, so the test battery remaining power of time is very short.