How many 18650 batteries does it take to make an electric car battery?

You haven't considered the problem of voltage. One 18650 battery rated voltage is 3.7 V, and electric vehicles battery pack needs at least 48 v (36 v rarely), which needs about 13 18650 batteries to make it. So we need 130 18650 batteries to make the battery pack, that is to connect 10 batteries in parallel, then connect 13 batteries together in series, so as to achieve the capacity of 48 v30ah. 13 regular brand 18650 batteries cost thousands of yuan.

Using 18650 type lithium battery to make electric cars will take at least 60 v 192 section of the battery.

Specific solutions: battery spot welder connects each 18650 battery is nickel by spot welding.

Every 12 batteries in parallel, as a group, and then 16 this set of batteries in series, is close to the 60 v40ah.

Every 12 batteries in parallel, the capacity of 12 * 3400/1000 = 40.8 AH;

16 group in series, the voltage is 16 * 3.7 = 59.2 V

Total demand for 12 * 16 = 192 section.

Special remind, lithium batteries on voltage is very sensitive and must match on reliable battery protection board device can use.

This is assembled a set of 18650 electric cars all lithium battery materials, including stainless steel battery pack

The assembled group 18650 electric cars need material in lithium-ion batteries

2 This is the accessory material, wire fabric heat shrinkable film, there is also a voltmeter, voltmeter to judge the battery pack battery box above

The assembled group 18650 electric cars need material in lithium-ion batteries

3 18650 battery clapboard and fixed bracket, a protection board, lithium batteries must have protective plate, otherwise one is discarded

The assembled group 18650 electric cars need material in lithium-ion batteries

4 The key is 18650 batteries, electric vehicle must choose power batteries

The assembled group 18650 electric cars need material in lithium-ion batteries

5 Manufacturer of straight hair, batteries have to buy the real thing, copycat manufacturers of batteries, life is short, and the failure rate is quite high

The assembled group 18650 electric cars need material in lithium-ion batteries

6 Finally put into the battery box, stainless steel is better

The assembled group 18650 electric cars need material in lithium-ion batteries

7 The weight of the battery pack

The assembled group 18650 electric cars need material in lithium-ion batteries

The protection plate, because it is a small electric, board does not need to how much current, is not expensive 60 yuan

Bat also bring balance so charge can ensure each battery

To sum up, the first get into the battery box, just like this, much lighter than lead acid. This way, one hand can bring electric vehicles, can upstairs is not afraid of being stolen

Copper to the punch, and welding, because copper conductive good, long time will not rust

Tin on this, a second one, quickly, the premise is that electric power is greater than 60 w, low power is difficult

And to burnish it

Weld it properly and assemble the storehouse, and then everything is OK.

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