0.4A - 2A Smart BMS Active Balancer JK-BD4A17S4P JK-BD4A20S4P JK-BD4A24S4P JK-B1A8S20P

JKBMS factory direct sell below active equalizers and active BMS models:

The above link price is for JK-B1A24S active balancer, and for other models are available below and need to evaluate the factory price base on order qty by our sales team.

JK-B1A24S

JK-B2A24S

JK-DZ08B1A24S

JK-DZ08B2A24S

JK-DZ11B1A24S

JK-DZ11B2A24S

JK-B5A24S

JK-B10A24S

JK-BD4A17S4P

JK-BD4A20S4P

JK-BD4A24S4P

JK-BD6A17S6P

JK-BD6A20S6P

JK-BD6A24S6P

JK-BD6A17S8P

JK-BD6A20S8P

JK-BD6A24S8P

JK-BD6A20S10P

JK-BD6A24S10P

JK-B1A20S15P

JK-B1A24S15P

JK-B2A24S15P

JK-B2A20S20P

JK-B2A24S20P

JK-B1A8S20P

JK-B2A8S20P

JK-B2A25SRP

JK-B5A25S60P

More product detalis and datasheet needed, pls check JKBMS officical website www.jkbms.com

JKBMS factory provide direct after sales and techinical support for customers who buy JKBMS from this link directly. JKBMS R&D team also support customize active balancer or active BMS for batch order customers worldwide. Feel free contact info(at)jkbms.com

User Manual

1. Overview

JKBMS Active Equalizer and active BMS (Take JK-B1A24S as example) are a balanced solution for large-capacity series lithium battery packs Management system.The equalizer uses a supercapacitor as a medium to achieve active energy transfer equalization.

The equalizer and active BMS are suitable for 2 to 25 strings of battery packs with voltage acquisition and equalization. The equalizer works for 1A The equalized current is used for energy transfer, and the equalization current does not depend on the voltage difference of the series connected cells in the battery pack. Voltage acquisition range1 V ~ 5V, accuracy ± 3mV. Applicable to all kinds of batteries on the market such as lithium iron phosphate, ternary lithium, titanic acid, lithium lead acid, etc.

The equalizer has Bluetooth communication function and is equipped with mobile APP software. Can be viewed via Bluetooth connected equalizer Single cell voltage, view equalization status, modify setup parameters, etc. Can be applied to small sightseeing cars, scooters,Enjoy battery, battery power, base station backup power, solar power station and other products in the battery PACK, can also be used for batteries

Balance maintenance, repair and other occasions.

2. main technical parameters

2.1 Main Specifications

• Support 2~24 strings of battery packs;
• Real-time, active, energy transfer equalization, after the balance is reached, the pressure difference between the cells is ≤ 3mV;
• Single voltage range 1V ~ 5V, accuracy ± 3mV;
• Support all battery types such as ternary, iron lithium, lead acid, super capacitor;
• The equalization current is set independently in the range of 0.1~2A, independent of the cell voltage difference;
• Support balanced cascading to apply to more than 24 series of battery packs, in theory, can be cascaded indefinitely;
• Bluetooth communication function, equipped with APP, to view the state of the battery in real time;
• Equilibrium line resistance detection, abnormal contact failure is found in advance;
• Power supply range: 40V~100V
• Low voltage shutdown function to prevent battery damage.

2.2 Use of environmental conditions

1. Operating temperature range: -20 ° C ~ 70 ° C;
2. Power requirements: 40~100V, can be self-powered by battery or external power supply.
3. Power consumption: Equilibrium state 10mA@100V, unbalanced state 6mA@100V.

3. connector and interface description

3.1 Connector, LED position description

The connector and LED position are shown in Figure 1.

Figure 1 connector schematic

3.2 Connector, LED Definition Description 

The connector definition and LED definition are shown in Table 1.

Table 1 Connector definition

3.3 size

EJ-B1A24S equalizer size is 162mm × 100mm × 20mm, shape and mounting hole position size

3.4 weight

The equalizer weighs approximately 800g.

4. Installation methods and precautions

4.1 Unpacking inspection and precautions

Unpacking inspection and precautions are as follows:

1. Handle the packaging box, equalizer, etc., and try not to invert it;
2. Pay attention to whether the packaging is intact before unpacking, if there is any impact mark, whether it is damaged or not;
3. Take adequate anti-static measures, such as wearing anti-static clothing, wearing anti-static gloves, and wearing an anti-static wrist strap.

After fully discharging, open the antistatic bag and take out the equalizer to check if the equalizer looks good.

4.2 Single equalizer installation

A single JK-B1A24S/JK-B2A24S equalizer is suitable for battery packs with 2-24 strings of batteries in series. But when the battery pack

When the voltage is lower than 40V, the equalizer needs to provide external DC 40V~100V power supply.

For a battery pack with 24 strings of batteries connected in series, the wiring method is shown in Figure 3.

Figure 3 24S battery wiring diagram

Apply the equalizer to less than 24S cells. The wiring method is shown in Figure 4 (20S shown).

Figure 4 20S battery wiring diagram

Apply the equalizer to a battery pack with a voltage lower than 40V. The wiring method is shown in Figure 5. (The figure is matched with 3S.The boost module is an example).

Apply the equalizer to a battery pack with a voltage lower than 40V. The wiring method is shown in Figure 6 (the figure is shown with 3S and external power supply).

Figure 6 External power supply wiring diagram

4.3 Multiple Equalizer Cascading Installation

The EJ-B1A24S/EJ-B2A24S equalizer supports cascading, which allows the equalizer to be applied to more than 24 strings of battery packs. The cascading installation wiring diagram is shown in Figure 7.

5. Use and operation

5.1 Preparation and inspection before use

Before turning on the power, please confirm whether the equalization line connection is normal, whether the power supply provided to the equalizer is within the required range, check whether the equalizer has been placed securely, and confirm whether the circuit board is short-circuited or not. Turn on the power of the equalizer, otherwise it may cause serious consequences such as abnormal operation or even burning.

5.2 Equalizer power-on work

After confirming that the above operation is correct, you can power on the equalizer. The JK-B1A24S/JK-B2A24S type equalizer does not have a power-on control switch. It only needs to connect the power cable to the terminal. The equalizer will start working automatically. The equalizer is designed for automatic operation. The first power-on condition is that the first battery voltage of the battery pack is higher than 2.4V.