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电动车锂电池和铅酸蓄电池哪种好 锂电池和铅酸蓄电池的区别(二)
时间:2022-09-16 11:19:43        点击量:【 】次

锂电池和铅酸蓄电池的区别

1、安全对比

动力型锂电池(锰酸锂、磷酸铁锂)材料不同安全性有所差别,铅酸电池技术已经相当成熟,安全性比锂电池

高。

2、环保对比

锂电池没有污染,而铅酸电池有重金属铅的污染。所以使用铅酸电池的电动汽车还是会污染环境。

3、价格对比

市场上相同容量的锂电池价格是铅酸电池的一倍多。这就是使用锂电池的电动汽车价格比较贵的原因

4、能量对比

锂电池的质量比,体积比,能量比都高于铅酸电池大概约40%。

5自放电率对比

锂电池月自放电小于3%,而铅酸电池15~30%,差别较大。

6、使用寿命对比

目前通用的磷酸铁锂充电1500次,没有记忆效应,充电1500次后约85%的存储能力,而铅酸电池为500次左右。

存储能力也会大幅下降,而且记忆效应很明显。所以使用锂电池的电动汽车电池使用寿命会更长。

7、电压平台对比

锂电池电压平台都大于3V,铅酸电池是2V。

8、放电特性对比

简单的说同样容量的电池,大电流放电的情况下,锂电池要比铅酸电池多放出来约30%的电。

9、耐用性方面

锂电池耐用性较强,耐震动性好,完全充电状态的电池安全固定,消耗慢,充放超过500次,并且无记忆,一般

寿命在4-5年,铅酸电池一般在深奈深放电400次以内,有记忆,寿命在两年左右。如果使用的是免维护铅酸基

电池,需要注意的是其电池失水量少,使用中一般不需添加蒸馏水。


The difference between lithium battery and lead-acid battery


1. Safety comparison


Power-type lithium batteries (lithium manganate, lithium iron phosphate) have different safety materials. The lead-acid battery technology is quite mature, and its safety is higher than that of lithium batteries.


high.


2. Environmental comparison


Lithium batteries are not polluted, while lead-acid batteries are polluted by the heavy metal lead. Therefore, electric vehicles using lead-acid batteries will still pollute the environment.


3. Price comparison


The price of lithium batteries of the same capacity on the market is more than double that of lead-acid batteries. This is why electric vehicles using lithium batteries are more expensive


4. Energy comparison


The mass ratio, volume ratio and energy ratio of lithium batteries are about 40% higher than those of lead-acid batteries.


5 Self-discharge rate comparison


The monthly self-discharge of lithium batteries is less than 3%, while that of lead-acid batteries is 15~30%, which is quite different.


6. Service life comparison


At present, the general lithium iron phosphate is charged 1500 times without memory effect, and the storage capacity is about 85% after 1500 times of charging, while the lead-acid battery is about 500 times.


Storage capacity is also significantly reduced, and the memory effect is evident. Therefore, the battery life of electric vehicles using lithium batteries will be longer.


7. Voltage platform comparison


Lithium battery voltage platform is greater than 3V, lead-acid battery is 2V.


8. Comparison of discharge characteristics


To put it simply, the lithium battery can discharge about 30% more electricity than the lead-acid battery when the battery of the same capacity is discharged at a high current.


9. Durability


The lithium battery has strong durability and good vibration resistance. The battery in the fully charged state is safely fixed, consumes slowly, and has been charged and discharged more than 500 times, and has no memory.


The lifespan is 4-5 years, and the lead-acid battery is generally discharged within 400 times in Shennanshen, with memory, and the lifespan is about two years. If a maintenance-free lead-acid base is used


Batteries, it should be noted that the battery loses less water, and generally does not need to add distilled water in use.


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