Brief discussion on battery types and parameters of electric vehicles

1、 Type.

1. Lead acid battery

General name of lead-acid battery: sealed maintenance free lead-acid battery has the advantages of low price, large capacity and mature technology. Lead acid battery is also the main power source of electric vehicles in the market. The drawback is that the weight of lead-acid battery is still slightly heavy.

2、 lithium battery

lithium battery It is a battery with lithium metal or lithium alloy as cathode material and non-aqueous electrolyte solution. Compared with traditional lead-acid batteries, lithium batteries are small and light, more efficient, safe and environmentally friendly. It is very suitable for the elderly and female friends. The disadvantage of lithium battery is that the price is slightly higher.

3. Nickel cadmium battery

Nickel cadmium battery has the advantages of light weight and long service life. Generally, nickel cadmium batteries can be recharged and discharged more than 500 times, which is durable. The disadvantages are high price, low capacity, short mileage, memory effect of nickel cadmium battery, and discharge before battery charging.

4. Ni MH battery

The energy of Ni MH battery is higher than that of Ni Cd battery, and the endurance mileage is slightly longer. At the same time, it overcomes the disadvantage of memory effect of nickel cadmium battery. Recently, with the increase of production, the price has also decreased. At present, some electric vehicles have begun to use Ni MH batteries.

2、 Parameters.

What do you think of the battery specification of electric vehicles? The following Shenglan technology engineers will introduce you to the simplest method to identify your electric vehicle battery model:

There are generally three methods:

1. Confirm the battery model according to the mileage of the new car.

(1) About 30km, estimated to be 36v12a battery.

(2) About 40 kilometers, estimated to be 48v12a battery.

(3) About 60-80km, if the battery is under the seat or under the foot, the battery box is a 48v20a battery. If the battery box is at the foot and assembled by two long boxes, it is estimated to be 48v28a battery.

2. The battery model can be identified by the charger, that is, according to the output current of the charger, the battery model can be known according to the following parameters.

Look at the parameters on the charger: output voltage * * VDC.

(1) 36V: 36v-42vdc output voltage.

If the output current is 1.5A, the output current of 10Ah is 1.6A, 12Ah.

(2) The output voltage is 48v-59vdc.

48v10ah if the output current is 1.7A and 48v12ah if the output current is 1.8A.

If the output current is 2.0A, the output current of 48v14ah is 2.3A, 48v17ah.

48v20ah if the output current is 2.5A.

Since some defective chargers do not indicate these parameters at all or can not see clearly, the third method needs to be adopted.

3. How to look at the battery specifications of electric vehicles? This method is the simplest, most direct and most practical: open the battery box and count the batteries.

If it's three, it's generally 36V. Check whether the battery says 12V or 16V (the national standard is 12V for each battery). If it is 12V, then three pieces are 36V. If it is 16V, then three pieces are 48V. The same as above. If it is 4 pieces, it is generally 48V. Of course, we should also distinguish. Only 12V or 16V. If only 12V, then 48V.

After the voltage is determined, the capacity is determined. If the battery says 6-dzm-10, it's 10Ah. If it is 6-dzm-12, it is 12Ah. By analogy, of course, some small manufacturers have false standards, such as 6-dzm-14, which is actually the national standard 10-12ah, and 6-DZM-20, which is actually the national standard 17ah.