Is it feasible to replace lead-acid batteries in electric vehicles with lithium iron batteries?
The price of general lithium batteries is several times that of lead-acid batteries, which reflects its low cost performance and does not meet the standard for general users to choose electric vehicles. Although the lithium battery has the characteristics of light weight, longer battery life and longer service life, the effect is not so obvious in the actual operation process.
Finally, compared with lead-acid batteries, lithium batteries have worse stability. If they are exposed to water or improperly handled, they are prone to explosion risks. Therefore, this is also an important reason why I do not recommend replacing lead-acid batteries with lithium batteries. Another thing to note is that the lithium battery is a multi-piece structure, as long as one of the problems occurs, it will affect the overall quality.
Lithium batteries are relatively delicate, because they are managed by a combination of many single-cell batteries, and require high consistency in the performance of the single cells. If there is a problem with the battery board, a battery cell is broken, which will directly drag the entire battery pack to use and repair It usually requires the factory department to deal with it. In addition, if the lithium battery is impacted, deformed, or damaged, or improperly charged, it may burn or even explode.
Lead-acid batteries are relatively stable and reliable. They can be modified and replaced at will. Generally speaking, there is no big problem. After all, users are not experts, so they don’t want to ride a “gas bottle” that makes them frightened to get off work.
After the introduction of the new national standard for electric bicycles, the development of lithium batteries is indeed good. After all, lead-acid is large and heavy, and it is difficult to pass the standard. Of course, lithium batteries are more needed for electric bicycles, so many companies have invested in lithium batteries. It is believed that the price of lithium batteries will further decline and the quality will become more and more perfect.
At present, 90% of electric bicycles on the market are powered by lead-acid batteries, and their weight generally exceeds the standard of 40 kg. The biggest problem of lead-acid batteries is serious environmental pollution, while the pollution of lithium batteries is relatively small. At the same time, the volume and weight of lithium batteries are only 1/3 of that of lead-acid batteries, and their cycle life has reached 1500 times. They are lead-acid batteries. Five times the battery life and charging time are better than lead-acid batteries.
The main precautions for replacing the lead-acid battery of electric vehicle with lithium battery
One, the battery space problem
It is feasible to replace lead-acid batteries and iron-lithium batteries with the same capacity and voltage, but it is necessary to consider whether the size of the battery can still be installed in the original position, whether it is protruding or being squeezed because squeezing and moisture will damage the internal battery A short circuit has occurred.
2. You must use a charger that matches the type of battery
Lead-acid batteries and iron-lithium batteries have the same capacity and voltage, and the charger is used indiscriminately because the charging voltage and current required by the two batteries are not equal in each stage. When charging lead-acid batteries, the charger voltage is high. The lithium iron battery has higher technical requirements, so when charging, the charger adopts constant current and constant voltage charging. The lead-acid charging lithium batteries will cause overshoot and explosion hazards.
Three, socket replacement
Because of the different interfaces between lead-acid batteries and lithium batteries, you must use a matching socket to charge the battery. Do not plug it in and use it, which will easily cause a short circuit of the lithium battery, which may cause danger.
Four. After changing the battery, the original charging port cannot be used for charging
Because of the different charging principle, if the original charging port on the electric vehicle is used for charging, the circuit will be damaged and the lithium iron battery will be short-circuited.
5. After changing the battery, the controller does not need to be replaced
It is also important to mention here that you can only replace the battery with the same capacity and the same voltage, and you cannot replace the battery with the capacity and voltage inconsistent with the previous battery. That will burn the controller.
