动力蓄电池作为电动汽车的动力来源，其性能的好坏会对电动汽车的可靠性、安全和效率等方面起到重要作用。目前常用的电池有铅酸电池、镍氢电池、锂离子电池与燃料电池。-Power battery as a power source of electric vehicles, the reliability of its performance will have electric vehicles, safety and efficiency has played an important role. The most commonly used batteries are lead-acid batteries, nickel hydrogen batteries, lithium ion batteries and fuel cells.