car battery, is one of the important components of the car, the car is responsible for many electronic appliances provide power to ensure their normal work performance.
1. The action of the vehicle battery
It is a kind of chemical energy into electrical energy, the DC power supply belongs, it acts
(1) when the engine is when idle, the power supply to the electrical equipment.
(2) when the overload of the generator, the generator power to the power assist device. When
(3) starting the engine, the starter to provide a powerful starting current (typically up to 200 ~ 600A).
(4) a large-capacity capacitor or a secondary battery, the car can be protected appliances.
(5) When the electromotive force of the generator terminal voltage is higher than the lead storage battery, a portion of the electrical energy into stored chemical energy, which is charged.
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Classification 2 automotive battery
(1) a nickel cadmium battery
Nickel-cadmium batteries (Ni-Cd) Voltage: 1.2V service life: 500 Discharge temperature: -20 degrees to 60 degrees charging temperature: 0 degrees to 45 degrees Note: strong resistance to over-charge capacity.
(2) nickel-hydrogen battery
Nickel hydride batteries (Ni-MH) Voltage: 1.2V life is: 1000 Discharge temperature: -10 degrees to 45 degrees Charging temperature: 10 degrees to 45 degrees Note: At present, the maximum capacity is around 2100mAh.
(3) lithium-polymer cell
Lithium polymer battery (Li-polymer) Voltage: 3.7V service life: 500 Discharge temperature: -20 degrees to 60 degrees charging temperature It is: 0 ° to 45 ° NOTE: lithium improved, no battery liquid, and the polymer electrolyte instead, can be made into a variety of shapes, stable than lithium.
(4) lead-acid battery
Lead-acid batteries (Sealed) Voltage: 2V service life: 200 ~ 300 Discharge temperature: 0 degrees to 45 degrees Charging temperature: 0 ° to 45 degrees Note: is the general vehicle battery (which is 6 2V to 12V in series), the free water up to 10 years of battery life, but the greatest volume and weight.
(5) Lithium-ion battery
Lithium-ion batteries (Li-lon) Voltage: 3.6V service life: 500 Discharge temperature: -20 degrees to 60 degrees Charging temperature: Preparation of 0 degrees to 45 degreesNote: the weight ratio of the nickel hydrogen battery light 30 percentage to 40 percentage capacity higher than 60% or more nickel metal hydride battery. But impatience over charge, if the overcharge will cause overheating and damage the structure = gt; explosion.