Lithium-ion battery(a)

Lithium-ion battery main components

(1) battery cover

(2) —- cathode active material for lithium cobalt oxide

(3) —- divide a special composite membrane

(4) —- cathode active material for carbon

(5) organic electrolyte

(6) Battery Shell

The advantages of lithium-ion dell laptop battery can

We have always said that the lithium-ion batteries are for the superiority of the traditional nickel-cadmium batteries (Ni / Cd) and nickel-metal hydride battery (Ni / MH) in terms of the. Then, lithium-ion battery good What went wrong?

(1) high voltage

(2) than the energy of large

(3) Long cycle life

(4) low self-discharge rate

(5) No memory effect

(6) non-polluting

The following is a nickel-cadmium, nickel hydrogen, lithium-ion battery performance comparison:

Technical parameters of Ni-Cd Battery Ni-MH inspiron 500m battery Lithium Ion Battery

Operating voltage (V) 1.21.23.6

Weight ratio of energy (Wh / Kg) 5065105-140

Volume ratio of energy (Wh / l) 150200300

Charge-discharge life (times) 5005001000

Self-discharge rate (% / month) 25-3030-356-9

Whether the memory effect has the availability of

Yes No Have non-polluting

(Note: The charging rate of 1C)

Lithium-ion battery Working Principle

Everyone already know that lithium-ion dell inspiron 510m battery cathode materials are lithium cobalt oxide, are carbon negative electrode.

Lithium-ion battery working principle refers to the principle of charging and discharging. When charging batteries, the batteries have a lithium-ion cathode generation, after generation of lithium-ion electrolyte to the anode exercise. As the carbon anode was layered structure, it has a lot of microporous, the arrival of Li-ion on the anode embedded in the porous carbon layer, the embedded lithium-ion more the higher the charge capacity.

Similarly, when the battery discharge (that is, we use the process of the battery), embedded in the carbon anode in lithium-ion layer extrusion, and sports back to cathode. Back to cathode of lithium-ion more higher discharge capacity. What we normally refer to the battery capacity is the discharge capacity.

Is not difficult to see, in the lithium-ion battery charge and discharge process, lithium-ion at the anode from the cathode → Sports → cathode status. If we take the lithium-ion battery Saying for a rocking chair, rocking chair at the two ends of the bipolar battery, and lithium-ion as the best athlete in the running back and forth at the two ends of a rocking chair. Therefore, the experts gave a lithium-ion inspiron 600m battery lovely name rocking chair batteries.

Lithium-ion battery assembly process

Lithium-ion battery technology is very stringent, complex and here only a brief one of several major processes.

(1) Pulping

Use of specialized solvents and adhesives in powder form with the negative electrode active material is mixed, with high-speed mixing evenly, the paste made of the positive and negative material.

(2) coating

Will be made from pulp evenly coating the surface of the metal foil and drying, respectively, a pole piece made of positive and negative.

(3) assembly

By cathode film - divide - negative film - diaphragm placed the order from top to bottom, the battery made by winding a very core, then injected into the electrolyte, sealing and other process, namely the completion of the battery assembly process, the system into a finished battery.

(4) into

With a dedicated battery charging and discharging equipment for finished battery charge and discharge test, for each battery are tested only selected qualified latitude d500 battery products to be manufactured.