Homemade lithium battery for electric vehicle

Lithium battery is a kind of lithium metal or lithium alloy anode materials, the use of water battery electrolyte solution, the first lithium batteries from the great inventor Thomas Edison, use the following response: Li + MnO2 = LiMnO2 (www.hhrrb.com) for the REDOX reaction, the reaction of discharge due to the lithium chemistry is very lively, makes the lithium metal processing, storage, use and require very high to the environment. So, the lithium battery has not been applied for a long time. The lithium battery has now become the mainstream.

Lithium battery is very strict, complex technology, here only a brief introduction of several main processes:

Method a, pulping with special solvents and bonding agent and powder are respectively the cathode active material to mix, after high speed stirring evenly, made into slurry is the cathode material.

2 Method 2, the coating will be made of pulp evenly coated on the surface of metal foil, drying, respectively is negative pole piece.

3 Method 3, assembly according to the positive plate, diaphragm, the cathode piece - diaphragm top-down order have been placed through winding battery core, and then through injecting electrolyte, such as sealing process, namely complete battery assembly process, to make battery products.

4 Method four, to use dedicated to charge and discharge test of battery products, battery charging and discharging equipment of each battery only for testing, select qualified battery products, to the factory.

I told you to system:

1, your calculation is wrong, only 3.7 100 v1ah battery, combined into 48 v battery pack, only 7 ah, need 91 batteries only.

2, you must consider 91 battery voltage, capacity and internal resistance of consistency, poor capacity of < 1%, the voltage difference < 5 millivolts, internal resistance is poor < 2 milliohm, otherwise, the battery is easy to premature aging and discarded.

3, protective plate is the key to control the battery pack and scope of single battery voltage, charge and discharge current, ensure equalization charging and discharging.

4, the controller only controls the total voltage and current.

Better to buy if you want to homemade battery pack lithium iron phosphate batteries with 3 ah 26650 series 7 and can implement 48 v20ah, then buy 16 series iron lithium protection board, control current normal 6 a, 12 a, 18 a moment is ok.26650 battery only 24 yuan, 160 yuan protection plate, need about 2848 yuan, and the charger need 50 yuan, it is ok to assemble it. lithium iron phosphate battery is the safest, most cycling times of lithium battery.

1, your calculation is wrong, only 3.7 100 v1ah battery, combined into 48 v battery pack, only 7 ah, need 91 batteries only.

2, you must consider 91 battery voltage, capacity and internal resistance of consistency, poor capacity of < 1%, the voltage difference < 5 millivolts, internal resistance is poor < 2 milliohm, otherwise, the battery is easy to premature aging and discarded.

3, protective plate is the key to control the battery pack and scope of single battery voltage, charge and discharge current, ensure equalization charging and discharging.

4, the controller only controls the total voltage and current.

If you want to homemade battery pack, it is better to buy batteries, lithium iron phosphate with 3 ah 26650 series 7 and can implement 48 v20ah, then buy 16 series iron lithium protection board, the control current normal 6 a, 12 a, 18 a moment is ok.26650 battery only 24 yuan, protective plate of 160 yuan, need about 2848 yuan, and the charger need 50 yuan, it is ok to assemble it. lithium iron phosphate battery is the safest, most cycling times of lithium battery.

It was a very good car frame, and then bought a little above 2000, frame work is very good, but is the lithium battery aging. Space is studied, the battery box is not big, put a lot of lithium battery is bad, original soft package lithium-ion battery is long, open at the drum, the aging.

The batteries is not very good search, asked the green can you change the battery more than 1000, officials and find AMD asked under the 760 pieces to change a 8 ah. Wish this car is worth not so much money.

Polish, the motor is 280 w, the car, which is under the condition of 36 v is about 10 a current, is not big. Just have a batch of family wholesale SONY mobile phone before the rest of the new mobile phone batteries, are authentic SONY mobile phone battery, a battery before selling price to more than 60, at least 30 to block the purchase price is, this batch of battery capacity is 1500 mAh, tried there are voltage, took a few day sampling the basic capacity of above 1400 mAh, under relatively consistent, SONY authentic thing does give force, from 2011 to 2017 for so many years now. Under the search on the net a treasure still sells more than 30 pieces of a, for it's a shame, but for rapeseed jun also nothing than purposes, are now in use apple mobile phones.

Three steps:

1, the voltage and current

2, battery box size and battery monomer structure

3, each group of equilibrium

4, insulation encapsulation

First of all, is to consider the voltage and current.

Due to the lithium battery electric vehicle with monomer battery there is no essential difference between voltage and 36 v or 10 string.

For current is complex, some people estimate that small to worry about mobile phone battery current, how is it possible for electric bicycle power supply! Individual nature is no good, but multiple parallel are different. Like a chopstick is easy to broken, a pair of chopsticks is not easily broken.

In front of the entire group to achieve said 10 a current, probably need a few batteries in parallel?

Rapeseed jun for this single SONY mobile phone battery kageyuki test 1.5 A is very stable, can go to the 2 A, 1.5 A conservative, so 8 and 12 A is sure to 16 A, maximum power 576 w. Finally, of course, to complete the car just know idea on unreliable.

To start, after test the voltage current demand will know how to assemble.8 and 10 string to set of rape you need 36 v12ah electric lithium battery.

Second, clear after the voltage and current, is based on the electric vehicle battery box space, spatial arrangement of battery monomer. Rape you first to measure under the SONY battery measurements.

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