Which types of lead-acid batteries for electric vehicles should be paid attention to when changing to lithium-ion batteries

1. When refitting, consider the issue of volume and space. Under the same capacity, the volume of the lithium-ion battery is only half of that of the lead-acid battery, so it can definitely be installed, but some shape and packaging issues should be paid attention to. After all, the space on the car is not necessarily If it is in the same direction as the battery, you should consider fixing it reliably to prevent vibration from falling. Moreover, when economic conditions permit, of course, it is hoped that the larger the capacity of the modified lithium-ion battery, the better. Therefore, it is necessary to make full use of the upper space and choose a battery with a reasonable shape for layout. If it is replaced with the same capacity, because the remaining space is large, when replacing it, find something to fill up the excess space to prevent the lithium-ion battery from shaking and falling off during driving. 2. When disassembling the battery, although the battery output is positive and negative, it is very simple, but it should also be removed one by one, wrap the bare wire ears with tape, and then note the ± mark, so that when you install it back, re-align it. Connect the positive and negative pairs one by one to prevent the positive and negative connections from being reversed when you are confused, or accidentally short-circuiting the positive and negative electrodes of the positive and negative batteries, causing safety problems. 3. When purchasing lithium-ion batteries, it is best to ask the merchant to equip the same or similar plug terminal. If the shape of the plug is different, some may need to be crimped or welded, or even to switch the line, etc., be sure to pay attention to the current level. Optional specifications, it is best to put a multimeter DC, re-measure the voltage when wiring, to prevent the positive and negative reverse. Remember, the positive and negative poles must be placed separately, and do not perform operations such as grounding the negative pole. 4. If the motor and controller are enlarged while changing the battery, it is necessary to consider whether the main circuit line should be thickened. You can check the electrician manual to see how many square wires can pass and how many amperes of current, if the original car The thread is thinner, which will also leave a safety hazard, and the efficiency and power effect will be compromised. 5. When changing lead-acid batteries to lithium-ion batteries, the charger must be changed to special-purpose lithium-ion batteries. Lead-acid batteries have large internal resistance. Generally, the output voltage of chargers should be higher, and many have pulse charging functions, so lithium-ion batteries It may be overcharged when charging. Because of the protection of the protection board, the charger output voltage setting will be abnormal when charging, and the backward cells may be unsatisfactory and cause damage. If the protection board happens to be broken, such high-voltage charging can easily cause an explosion. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Some common questions and answers about buying lithium-ion battery electric vehicles