When 60v120Ah or 72v100Ah lithium-iron batteries are used in the same electric vehicle, which one ha

Introduction When 60v120Ah or 72v100Ah lithium-iron batteries are used in the same electric vehicle, which one has a longer battery life? If the car is compatible with 60 volts and 72 volts, also

When 60v120Ah or 72v100Ah lithium-iron batteries are used in the same electric vehicle, which one ha

If this car is compatible with 60 volts and 72 volts, that is, if the hardware conditions do not change, of course the 60 volt lithium iron battery will have a longer cruising range. The explanation for this situation is that the voltage is low, the speed is relatively low, the resistance is low, and the power consumption is low. When the speed is doubled, the power consumption increases by 7 times. is about the same, the mileage will be longer.

What is the difference between 48V and 60V batteries?

Specific plan: Use a battery spot welder to connect individual 18650 batteries via spot welding nickel leaf points.

All 12 batteries are connected in parallel in a group, then 16 groups of these batteries are connected in series, which is closer to 60V40ah.

All 12 batteries are connected in parallel, the capacity is 12*3400/1000=40.8AH

16 groups are connected in series, the voltage is 16*3.7=59.2V;

The total request is 12*16=192 nodes.

The common 18650 rechargeable lithium battery has a voltage of 3.6 or 3.7 V. When fully charged, it is 4.2 V. This does not matter much to do with the power (capacity) of 18650 batteries. from 1800mAh to 2600mAh (the capacity of 18650 battery is mainly 2200~2600mAh), the main capacity even has a capacity of 3500 or 4000mAh or more.

Detailed information:

Common 18650 batteries are divided into lithium ion batteries and lithium iron phosphate batteries. The rated voltage of lithium ion battery is 3.7V, the charging cutoff voltage is 4.2V, the rated voltage of lithium iron phosphate battery is 3.2V, the cutoff voltage charging is 3.6 V, theThe capacity is generally 1200 mAh. 3350 mAh, common capacity is 2200 mAh-2600 mAh.

Baidu Encyclopedia-18650 lithium battery

Can a 48V lithium battery be installed in a 60V electric car?

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48V The difference with 60V battery: different power, different driving speed, different selling price and different configuration.

1. Different power

One of the main differences between 48V and 60V electric vehicle batteries is that the difference in motor power is relatively large. , motor power It is the maximum power which can work for a long time under the rated voltage. Engine power will directly affect battery power. The power of the 48v motor is therefore obviously lower than that of the 60v motor.

2. Driving speeds are different

48 V s batteriesgenerally speaking, the driving speed of electric vehicles is a little slower than that of 60V electric vehicles. This is why many consumers choose 60V instead of 48V when purchasing electric vehicles. , but in fact, 48V can also meet their daily transportation needs.

3. The sales prices are different

Comparing the 48v and 60v batteries currently sold in the market, it is obvious that the price of 60v batteries is higher than that of 48v batteries.

4. Different configurations

Generally speaking, the battery of a 48 V electric vehicle is made up of four 12 V batteries connected in series, while the battery of a 60 V electric vehicle is essentially made up of four batteries 12 V connected in series. uses five 12V batteries connected in series. Compared to 48V electric vehicles, 60V electric vehicles have lower costshigher nfigurations.

Advantages of 48v batteries

1. Excellent high temperature resistance: The thermal peak of general lithium iron phosphate batteries can reach 350℃~between 500℃, wide operating temperature range (-20~+75℃), high temperature (60℃).

2. It can still release 100% of its capacity under high rate discharge: The picture shows the discharge curve of the lithium iron phosphate battery. Even at a discharge rate of 5°C, the discharge rate can still reach 90%.

3. Fast charging: 2C high current can charge and discharge quickly. Under a special charger, the battery will overflow within 40 minutes after being charged at 1.5°C, and the starting current can reach 2°C. However, lead-acid batteries currently do not have such performance.

4. Safety: Safety comes from the stability of the cathode material and a secure design.reliable security. Lithium iron phosphate batteries have been rigorously tested and will not explode even in severe collisions.

Lithium iron phosphate battery for electric vehicles

No, a 60V lithium battery is required for normal use. The voltage of 48 V is too low to drive an electric vehicle. vehicle.

Since the cruising range of low-speed four-wheel electric vehicles is still relatively limited and cannot fully meet the daily travel needs of the public, if you want to increase its cruising range , you can install an extended autonomy. Increase its cruising range, increase its range of activities, meet the daily travel needs of the public, and travel back and forth freely, without more difficulty due to lack of power midway.

It is not recommended to start prolonautonomy gauge when the battery is full. It is generally recommended to start it when the battery is only at 30%-40%. There is no particularly good effect when starting when the battery is full. For the sake of respect for the environment, it is recommended to start the range extender when necessary. Battery pollution is more serious than exhaust pollution. It is not recommended to use it when the battery is low on electricity. The range extender starts electrically. If the battery is low on electricity, it may not start.

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