How long it takes for the battery to equalize depends on the state of use of the battery. Under normal circumstances, it can be completed in 1-2 hours for fast words, but it may take more than ten hours for slow words.

Battery equalization means that different cells in the battery pack use differential currents to maximize the capacity of the cell through balanced charging, so as to ensure that the energy of each battery unit is available. In simple terms, the new energy vehicle power battery pack is composed of a number of small cells, and during the use of the battery, some small cells may experience performance degradation, resulting in a deviation in the voltage of a single small battery. At this time, the battery equalization charges these individual small batteries separately, so that its voltage is balanced with the entire battery pack battery, so that the car can restore the best endurance state.

Battery equalization method and process

At present, there are two main methods of battery balancing: active balancing and passive balancing. The following describes the two battery balancing methods.

1. Passive equilibrium

Passive equalization is to add a resistance load to the battery, when the system detects that the voltage of a battery is too high, it will turn on the load resistance, let the battery discharge to the resistance, consume battery energy, and finally make all batteries reach the same. Passive equalization is low cost and easy to connect, requiring only a resistor to be connected in the battery. But this also causes energy to be wasted, and the heat generated by the discharge to the resistance can affect the battery's service life.

2. Active balance

Active equalization is a form of active equalization developed on the basis of passive equalization, by transferring the energy of a battery pack with a high voltage to a battery with a lower charge. This avoids the energy loss associated with passive equalization. However, the circuit of the active balancing method is more complex, and it is not simple to achieve, and there is often an excessive energy transfer, which affects the service life of the battery.

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. The battery equalizer can ensure the power balance between battery cells in real time, thereby extending the battery life by 5-30%.

Features: The battery equalizer is an energy transfer equalizer, which can compensate the battery on both sides. When the voltage difference between the battery connected in series exceeds 10 millivolts, the battery equalizer starts to work, and the current flows from the battery with higher voltage to the battery with lower voltage, and finally the battery reaches balance. It can be connected in a series connected battery for a long time to automatically maintain the balance of the battery without maintenance.

Battery equalizer is an active balancing system developed for many years, which solves the problem of charge and discharge balance of electric forklift, electric vehicle, electric tractor and other battery packs, effectively extending the battery range and battery life.

In short, battery equalization is to improve the effective capacity and service life of the battery pack, because the battery in the process of processing, the voltage of each battery will gradually become different, long-term use will affect the battery life. Therefore, battery equalization is necessary.