In addition to gasoline engines, hybrid cars are also driven by electric motors that rely on batteries.Hybrid car batteries are produced in the same way as traditional car batteries and have the same functions.The only big difference is that the hybrid car or truck battery is larger in size, allowing for the huge power needed.But compared to the batteries of pure electric vehicles, the batteries of hybrid cars are smaller because hybrid cars also use gasoline engines.To meet the needs of hybrid vehicles, their batteries have a unique internal structure and supply of conventional batteries.A hybrid car or truck battery may contain several 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 includes 6 batteries, so there are 168 batteries in the whole package.The battery voltage of 650-is reversed to alternateAC motor.Whenever the package fails, it is likely that the module is defective, or it is possible to rebuild the package by replacing the appropriate module.In any car, the rechargeable battery is the starting motor, lamp, engine ignition system and accessories and 12-V lead-The acid battery can provide the required power.Inside the hybrid car, use additional rechargeable batteries to run the motor that drives the wheels, which means extra strength is highVoltage batteries are expected.Lead-Acid batteries are heavy and cannot provide basic power in a small package.Therefore, for practical purposes, most car companies have turned to other forms of rechargeable batteries.Today, nickel-Most hybrid cars have metal hydrogen batteries installed.Over 2 million worldwide.The electrode used in the NiMH battery is hydrogen-Absorption alloy of negative nickel hydroxide.Toyota Prius, Honda Civic Hybrid and Honda Insight use NiMH batteries, among others.Another type of battery is a lithium ion battery with more power in a smaller package.Lithium-ion batteries are composed of anode, cathode and electrolyte.The anode is carbon like graphite.The cathode is actually a layered oxide of lithium cobalt oxide, or it may be a multi-anion like lithium iron phosphate, or it may be a spinel like lithium manganese oxide.Electrolyte can be rightWater natural carbonates containing lithium ion complexes.The Honda hybrid will start using lithium batteries.While Toyota may have gained benefits in extracting lithium, it insists on using NiMH (the replacement cost is about $4,000) as a replacement for higher-priced lithium.Still, it is predicted that lithium may be the key to making hybrid cars cheaper in the future.Less fuel consumption for hybrid cars, thus reducing pollutionDiscarded batteries have toxic effects on the environment, which will only be exchanged for another problem with one specific problem.All kinds of batteries are dangerous to the environment.When it comes to batteries, which are mainly made of lead, lead is the most harmful, even if lithium is definitely the least harmful.Nickel is in the middle.However, if cobalt is used in lithium batteries then this can be a problem.In the environmental impact of these materials, recycling technology plays a vital role.Lead has mature recycling technology, but a large number of metric tons of lead enter the landfill every year.Full recovery of Nickel remains a challenge and nickel is considered a possible carcinogenic substance.At present, the number of hybrid vehicles accounts for only a small part of the world's 0.7 billion vehicles.But with the increase in the production and use of hybrid cars, the impact of their batteries on the environment will be a problem and must be solved as soon as possible.