With the promotion and application of new energy vehicles and the development of battery technology, power lithium batteries have become the ideal power source for the new generation of electric vehicles due to their high energy density, good power characteristics, and long life.
However, after long use or other reasons, the cells of the battery pack are prone to inconsistencies, which will lead to
This article aims to introduce the power battery balancer developed by Hirays based onSOC's battery balancing control and charge and discharge balancing integration.It can effectively provide battery pack consistency, improve battery pack capacity utilization, and improve the overall performance of the battery pack.
Battery Pack Consistency
First of all, let’s understand What causes the inconsistency of battery cells?
It mainly includes four points: the remaining capacity of the battery, internal resistance, and self-discharge current.Two aspects: one is the inconsistency caused by the battery production and processing, and the other is the inconsistency caused by the environment in which the battery is used.The reason for the inconsistency in production comes from the processing technology, materials and other factors; the inconsistency in the environment is due to the different position of each battery cell in the PACK, so the environment will also be different. For example, the temperature will be slightly different, and long-term accumulation will cause the inconsistency of the battery cells.
To sum up, the equalizer is used to eliminate the remaining capacity difference of the battery cells. Under ideal conditions, it always keeps the remaining capacity of each battery cell the same, so that all the cells reach the upper and lower voltage limits of charge and discharge simultaneously, thereby increasing the available capacity of the battery pack.
It can be seen that the equalizer is an important tool to ensure high battery capacity.There are two solutions to achieve the balancing function, active balancing and passive balancing.Passive equalization uses a resistor to discharge, while active equalization allows charge to flow between cells.
Charge and discharge balance
Independent channel design, detects and evenly charges or discharges the individual cells of the module. Ensure that each cell in the module is not overcharged or overdischarged.
Balanced maintenance default
Clamping voltage
It has a mechanism to judge when the target is reached and reduce the operating current; the balancer keeps the voltage of the cells in the battery pack infinitely close to the target threshold during the test.
Multiple protections
Monitors the temperature information of voltage and equalizer, and provides multiple test shutdown limits to avoid overcharging and over-discharging of batteries
7-inch display screen
Touchable screen, responsive at the first touch, improves operator comfort. Using charts and data, the real-time process and results of detection are clear.
Portable design
Hand-held and portable, compact and exquisite, making detection more convenient and fast.
Multi-functional
One machine has multiple uses. It can charge and discharge, and balance cells to solve various after-sales problems of lithium battery maintenance.
Scan the QR code and the online customer service will answer your questions immediately.
Heris Power Battery Balancing Maintenance Instrument
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