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.
