Many people consider the most when buying electric vehicles is the battery life problem, according to the current level of battery technology, the battery life of an electric vehicle should be about ten years, the current warranty in the car market is generally six years or 150,000 kilometers.

In fact, in the battery management system, battery balancing is an important technology. So what is battery balance? Now let's talk about this problem.

Battery balance includes two kinds, one is passive balance, the other is active balance.

Passive equilibrium: When it is used, it is connected in parallel at both ends of the battery that needs to be balanced, and when the voltage of the battery rises to a certain set value due to charging, the start switch tube will be switched on the discharge resistance, and the excess electricity will be lost in the form of heat energy, but there are certain unsafe factors, which are not conducive to energy saving and environmental protection, not suitable for the use of high-power battery packs, and only applicable to charging balance.

Active equalization is a kind of battery equalization that has developed rapidly in recent years. Its principle is to send part of the power of the high-voltage battery back to the battery circuit or directly to the low-voltage battery through the conversion device. The energy storage components used are mainly capacitors or inductors, and the basic balance of the voltage of the batteries in the battery pack is achieved through repeated charging and discharging of capacitors or inductors.

So why should the battery be balanced?

Because each battery can not be exactly the same, its internal resistance and capacity are different, it must be balanced when used in groups, so as not to damage the battery pack.

The significance of battery balance

Its basic significance is to use electronic technology to keep the voltage deviation of the battery cell within the expected range, so as to ensure that each cell battery does not damage during normal use. However, if the balance control is not carried out, with the increase of charge and discharge cycle, the voltage of each single battery is gradually differentiated, and the service life will be greatly shortened. In view of the unbalanced discharge of the battery, the battery equalizer can solve this problem.

Battery equalizer, also known as battery balancer, is an electronic protection device that prevents the voltage imbalance between battery cells inside the battery from reducing the service life. When the voltage imbalance between battery cells, different battery cells charge and discharge speed is different, a battery cell is charged at the same time, other battery cells are in the state of overcharge or undercharge, and overcharge or undercharge will damage the battery, resulting in reduced battery capacity and shortened life. Lianhong battery equalizer can guarantee the power balance between battery cells in real time, thereby extending the battery life by 5-30%.

The importance of installing a battery equalizer

When two batteries with different voltages are connected in series, the current does not change due to the addition of voltages after the series, so when discharging, the low-voltage battery will preferentially discharge, and because the total voltage addition of the battery pack is still high, there will be over-discharge of the low-voltage battery, and eventually damage. After we add the equalizer, the high-voltage battery will charge the low-voltage battery in reverse, so that the voltage of the two batteries is consistent. When the battery pack is discharging, keep the two batteries discharging simultaneously to maximize the capacity of the battery to extend the service life.

No equalizer is installed. Battery charging status: Some cells are fully charged and some cells are not fully charged

No equalizer is installed. Battery discharge status: Some cells are discharged or some cells are not discharged

The result is that it will directly affect the battery range and battery life, the battery without an equalizer will be charged bad, the capacity will decline, the electrolyte will dry up, etc., so that the stability and reliability of the battery can not be guaranteed, and ultimately affect the operation of the entire battery system resulting in premature damage to the battery life.

The battery installed with the equalizer transfers the power of the battery with high voltage to the battery with low voltage to compensate for the charge balance so that each battery is full, and finally realizes the energy transfer to extend the battery mileage and the service life of the battery pack.

Having said so much, we must already know the real battery balance and charging method of use, Lianhong battery equalizer is a lead-acid battery active balancing system that has been developed for many years, which solves the problem of balanced charging and balanced discharge of battery packs such as electric forklifts, electric vehicles, and electric tractors, effectively extending the battery range and battery life. For more information about the equalizer, please call: 0710-3313598