What is the reason of electric vehicle lithium battery charger charging heat
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2022/09/02 15:19:25
What is the reason of electric vehicle lithium battery charger charging heat? Electric car is composed of many parts, in all the parts, the importance of charger is self-evident, electric car lithium battery charger is specially for electric bike battery configuration of a charging equipment, charger performance is good or bad, directly affect the life of lithium battery.
What is the reason of electric vehicle lithium battery charger charging heat?
Sometimes electric vehicle lithium battery charger in the charging or use will have abnormal heating phenomenon, which may reduce the capacity of the battery, shorten the life of the battery. The reason of electric vehicle lithium battery charging heating charger is not good, quality problems, etc. We have to be careful if that happens.
In general, electric vehicle lithium battery charger charging heat is the same, not very high, but it is not low temperature, within the normal range, will not hurt the battery, but if the battery excessive heating and charger does not turn the light phenomenon, you need to be careful.
Professionals point out that the reason why there will be excessive hot hair when charging lithium battery charger for electric vehicles is that there are four main reasons as follows:
1. The lithium battery does not match the charger
This is the most common, most families have one or more electric cars, and many families of electric cars are of different brands, lithium battery charger is also different, but in use process, often mixed with use, this does not match the charger will cause the battery when move power supply heat, hair perm hot condition, therefore, to this, It is recommended not to easily use other brands of chargers, only use your own.
2. Heat caused by charger problem
General charger has no pulse function, no negative pulse to eliminate the polarization function, this kind of charger usually can not be in the late charging constant voltage, and even cause lithium battery voltage exceeds the allowable value, resulting in a large number of battery gas evolution, water loss, heating. When the battery has a trace of heat, it is normal heat, if the heat is abnormal, in the case of good battery performance, it belongs to the charger.
3. One of the batteries has a short circuit
You can take a multimeter to measure the voltage of each lithium battery, if it is found that there is a very low voltage is short circuit. I need a new battery. Actually, battery scrap is a sign before, such as the original charge when the battery is not hot, use a year or so (or even a shorter time) found that the battery charging in the fever, (with the hand to touch the battery shell) can be felt but most users though surprised but not too care about, because it did not impede cycling, Most of the time this happens on a summer's day.
4. The battery itself is faulty
Lithium battery aging, internal resistance becomes large, electrolyte drying, internal short circuit and other battery problems caused by the heat. As the battery is used for more times, including discharging and charging, the water molecules in the battery are gradually lost, which leads to the heating of the battery in the electrochemical reaction. In addition, the battery solution in the process of charging and discharging formed sulfuric acid crystal, the precipitation stuck on the plate, will lead to the increase of battery resistance and heating; And if the battery is caused by a short circuit, the best way is to replace the battery.
Therefore, when choosing lithium batteries for electric vehicles, try to choose high quality and good reputation brand batteries. In addition, in the charging process must always remember the manufacturer's instructions, and strictly abide by, especially the charging time, do not feel that the longer the capacity, the longer the time will damage the battery, and even cause fire. And too little, frequent charge and discharge, will cause no small harm to lithium battery.
How to choose the right charger for electric vehicle lithium battery?
First, to determine the battery voltage of your electric vehicle
If your electric vehicle battery voltage is 48V, then the output voltage of the corresponding lithium battery charger is generally about 59V; If the battery is 60V, then the corresponding charger output voltage is generally 73.5V. When choosing a charger, the input voltage must be 220 volts, but the output voltage of the charger must be matched according to your battery, which must be grasped accurately.
Second, according to the electric vehicle battery battery capacity AH to determine the charger output current if the battery is 12AH, then the general selection of the charger output current is 1.8A output current. If it is 20AH battery, the general selection of electric vehicle lithium battery charger output current is 26 to 30AH, if it is 30AH,35AH,60AH,100AH battery, the selection of charger output current is slightly greater than your battery capacity.
Three, determine suitable for your electric car charger interface shape positive and negative pole on the market is more common interface there are 4 kinds of T-type product head, three vertical product head, horizontal product head, round head, and your electric car must match.
Four, must choose intelligent lithium battery charger
Non-intelligent charger, charging time, generally is a large current has been charging, more than 10 hours, lithium battery began to heat, more than 20 hours, the battery may be bulging scrap. And the intelligent charger, at the beginning is a large current charging, full, began to automatically change to trickle charging, just like we use fire porridge, at the beginning of the time in order to let the water as soon as possible with a big fire, after the water turned to a small fire slowly boil. Intelligent charger can effectively ensure that lithium battery is in a safe state after being fully charged.
The above is the reason of electric vehicle lithium battery charger charging heat, in order to ensure the charging safety of lithium battery pack to ensure the service life of the battery pack, lithium battery pack use matching lithium charger. If the charger is lost or damaged please find the corresponding dealer to buy. Do not use lead-acid chargers or other forms of chargers for charging.
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