Lithium battery assembly tutorial is as follows:
Tools/raw materials
Lithium battery
Lithium battery fixed protection plate
1. Prepare the required materials, such as lithium batteries, lithium battery fixed protection plates, etc.
2. Place the individual lithium batteries in an orderly manner and secure them with silicone.
3. Use nickel material for series connection.
4. When connected in series, the battery core cannot be damaged and the battery cannot be connected reversely.
5. Connect the protection board, sort the cables and stick them with adhesive.
Can two sets of lithium batteries be connected in series?
Summary: Electric vehicle lithium batteries are batteries that power lithium battery electric vehicles. PREnvironmental problems caused by traditional internal combustion engine vehicles and the shortage of oil resources have made people turn to new energy vehicles. . Lithium-ion batteries have become the ideal energy source for the new generation of electric vehicles due to their excellent performance. So how do you assemble lithium batteries for electric vehicles? What are the precautions for using lithium batteries for electric vehicles? Next, let's learn more with the editor. 1. How to assemble lithium batteries for electric vehicles
1. Prepare materials including stainless steel battery boxes to assemble 60V24AH lithium batteries for electric vehicles. Lithium batteries must be batteries for electric vehicles.
2. Put 20 lithium batteries into a string, for a total of 8 strings.
3. Connect 8 strings of lithium batteries in parallel and use separators and tape to insulate them.
4. Secure with tape and solder the protective wire in series.
5. Use heat shrink film to wrap and insulate the soldered lithium batteries, connect them to the protection boards and insulate them to prevent short circuit.
6. Short circuiting of lithium batteries is very harmful. After wrapping the lithium battery with heat shrinkable film, the assembly of the electric vehicle lithium battery is completed.
2. Precautions for using lithium batteries for electric vehicles
1. Temperature
Temperature also has a big impact on the lifespan of lithium batteries. This point may cause lithium batteries to run out at the moment the electric vehicle is turned on, and an overheated environment will reduce the capacity of thebattery of the electric vehicle. Remember not to expose the electric vehicle to the sun.
2. Large current
For example, the 18650 battery cell is discharged at 3C and your electric car is 8000W. The battery cell used is less than the discharge current of your electric car. car. This will cause lithium. If the battery temperature is too high, the current will be too large, the service life will be shortened, and the battery will be discarded. If your electric vehicle has very high power and very fast speed, it is recommended. choosing 18650 battery cells with 10C current It is obvious to choose the suitable battery cell. Very important.
3. Fully charged storage
The full charge of the ternary lithium battery is 4.35V. Currently, the protection boards on the market stop charging at 4.2V, so many peoplebuy lithium. electric vehicles. The battery is said to not have as much capacity as the rated capacity. In fact, this is the reason why, generally, when storing lithium batteries for electric vehicles for a long time, it is better to use a battery that. is 50% full. For example, when you buy a new mobile phone, many of them start with 50% of the battery capacity.
If the battery is fully charged for a long time, the capacity of the lithium battery will be reduced. With the exception of iron phosphate and lithium, both of these elements can be stored at full charge. You should also pay attention to choosing a better quality protective board. The biggest taboo of lithium batteries is overcharging and overdischarging. it will be scrapped, overrun will inevitably cause bulging and scrapping.
3. The battery hasIs lead acid or lithium battery better for electric vehicles?
As an electric vehicle battery, lead acid battery has design advantages. The advantage is the relatively large open circuit power it provides (compared to lithium batteries). A 12V battery only needs to be made into a single battery, while lithium batteries may need to be connected in series to form a battery when used as a power bank. For power battery design, lead-acid batteries can be relatively easy to implement, while lithium batteries require many problems in design, subsequent charging, use and maintenance. In terms of manufacturing costs, current power batteries are lower in lead-acid batteries and higher in lithium batteries,but lithium batteries are the future development trend.
Those with the same capacity can be used in series, but it is better to charge them separately because cell phone batteries do not have a balancing circuit. It is best not to use batteries of different types in series, because after the smaller capacity battery is exhausted, the other batteries are still charged, which will cause the small capacity battery to be reverse charged or over-discharged, causing the small capacity battery could be damaged! If you must use it this way, you can simply stop using it before the small capacity battery runs out!
Lithium batteries of different capacities cannot be used in series: Lithium batteries of different capacities are connected in series. Small lithium batteriescapacity will be discharged first, while large capacity lithium batteries. will always be discharged. In the discharged state, the consequence is that small capacity lithium batteries will undergo "reverse polarity" (reverse charging) and be discarded.
In addition, under high current, the working temperature of small capacity lithium batteries is higher than that of large capacity lithium batteries. During continuous operation at high current, small capacity lithium batteries generate significant heat and. have a lower safety factor.