In addition to gas engines, hybrid cars are also driven by electric motors that rely on batteries.Hybrid car batteries are made in a related way as traditional car batteries and have the same functions.The only difference is the larger volume of the hybrid car battery, which is able to produce the huge power required.But hybrid cars or truck batteries are smaller than those of pure electric cars, because hybrid cars also use gasoline engines.To meet the needs of hybrid cars, their batteries have internal structures and components that are different from typical batteries.A hybrid car or truck battery can contain many modules, each with a row of batteries.At 2009 Toyota Prius, 201.6-There are 28 modules in the V battery pack.Each module, usually packaged in stainless steel, consists of 6 units, so the complete assembly has 168 units.The battery voltage of 650-is reversed to ACAC motor.Whenever the package fails, the module does have the possibility of defects and can be rebuilt by replacing the appropriate module.In any vehicle, the rechargeable battery is the ignition method on the starting motor, lamp, engine and accessories as well as 12-V lead-The acid battery can provide the required power.In hybrid cars, different rechargeable batteries are used to run the motor that drives the wheels, which means more efficient and efficientVoltage batteries are expected.Lead-Acid batteries are heavy and cannot provide the necessary power in small packages.Therefore, for practical purposes, most automakers have turned to other types of rechargeable batteries.Currently, NickelMost hybrid cars have metal hydrogen batteries installed.Over 2 million worldwide.The electrode used in the NiMH battery is hydrogen-Unfavorable absorbing alloy and good nickel hydroxide.Toyota Prius, Honda Civic Hybrid and Honda Insight use NiMH batteries, among others.A different form of battery is definitely a lithium ion battery, which has a greater power in a smaller package.Lithium-ion batteries are composed of anode, cathode and electrolyte.The anode is carbon like graphite.This cathode is a layered oxide of lithium cobalt oxide, and may also be lithium ion like lithium iron phosphate or lithium manganese oxide.Electrolyte is usually rightWater natural carbonates containing lithium ion complexes.The Honda hybrid will start using lithium batteries.While Toyota does have an interest in lithium mining, it insists on using NiMH (the replacement price is about $4,000) instead of lithium at a higher price.Still, it is predicted that lithium is likely to be the key to creating cheaper hybrid cars in the future.The fuel consumption of hybrid cars is much less, thus reducing pollutionDiscarded batteries have toxic effects on the atmosphere, which will only change one problem to another.All types of batteries have their environmental hazards.When it comes to the material that the battery is mainly made of lead, lead is the most dangerous, and lithium is the most dangerous.Nickel is in the middle.But if cobalt is used in lithium batteries then this will be a problem.Recycling Technology plays a vital role in the environmental impact of these materials.Lead has mature recycling technology, but a large amount of lead is produced in landfill every year.Full recovery of Nickel remains a challenge and nickel is considered a possible carcinogenic substance.At present, only a few million of the world's 0.7 billion hybrid vehicles.But with the increase in the production and use of hybrid cars, the environmental impact of their batteries will become a problem in proportion and need to be resolved as soon as possible.