Description
- Brand Name: MLHJ
- Origin: CN(Origin)
- Certification: CE
- Model Number: 1024
- Place of Origin: Sichuan, China
- Brand Name: Heltec Automation
- Base Material: –
- Copper Thickness: –
- Board Thickness: –
- Min. Hole Size: –
- Min. Line Width: –
- Min. Line Spacing: –
- Surface Finishing: –
- Continuous charge discharge current: 150A
- Maximum current (continuous 120s): 300A
- balancing current: 1A
- Balanced applicable battery capacity: 40AH~100AH
- Single voltage range.: 1~5V
- Single voltage accuracy: ±5mV
- Protection board power supply: battery pack
- Power supply range of protection board: 40V-100V
- Applicable motor power.: within 10KW
- Applicable controller current limiting: within 300A
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Product Description
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Product Name
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13-24S Supercapacitor 1A Active Equalizer BMS With Bluetooth Mobile APP
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Product Model
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1024
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Applicable Battery Type
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Ternary, lithium iron, lithium titanate
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Continuous Charge Discharge Current
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150A
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Balancing Current
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1A
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Applicable Vehicle Type
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Sightseeing car, elderly walker, photovoltaic energy storage, AGV,etc
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Applicable Motor Power.
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within 10KW
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Communication Function
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Bluetooth with APP
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Active Equalization Technology of Supercapacitor
The basic principle is to use the super polar capacitor as the energy temporary storage medium, charge the battery energy with the highest voltage to the super polar capacitor, and then release the energy of the super polar capacitor to the battery with the lowest voltage, so as to reciprocate until all the battery voltages are equal. The constant current DC-DC technology ensures that the current is constant whether the battery is charged or discharged.
The advantages of this equalization scheme are as follows:
1. Each energy transfer is the highest transfer and the lowest supplement, which avoids the invalid charge discharge cycle and has little impact on the battery life.
2. The cross current DC-DC technology ensures the constant equalizing current and does not affect the equalizing capacity due to the small differential pressure between batteries.
3. Only two energy transfer processes are needed to complete the equalization of primary battery from high to low. The equalization efficiency is not affected by the distance between batteries, which greatly improves the equalization efficiency. The square with an average efficiency of 0.95 is about 0.9.
1. Each energy transfer is the highest transfer and the lowest supplement, which avoids the invalid charge discharge cycle and has little impact on the battery life.
2. The cross current DC-DC technology ensures the constant equalizing current and does not affect the equalizing capacity due to the small differential pressure between batteries.
3. Only two energy transfer processes are needed to complete the equalization of primary battery from high to low. The equalization efficiency is not affected by the distance between batteries, which greatly improves the equalization efficiency. The square with an average efficiency of 0.95 is about 0.9.
Product Usage
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Application
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Suitable for sightseeing car, elderly walker, photovoltaic energy storage, AGV,etc.
Bluetooth with APP
All the data can be monitored on APP.
Overcharge protection voltage/
Over discharge protection voltage/
Overcurrent protection current
Can be set in APP.
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Parameters
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||
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Product model
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1024
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Suitable number of battery strings
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13-24S
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Applicable battery type
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Ternary, lithium iron, lithium titanate
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Continuous charge discharge current
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150A
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Maximum current (continuous 120s)
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300A
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Equilibrium type
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supercapacitor Active equalization
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balancing current
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1A
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Balanced applicable battery capacity
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40AH~100AH
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Overcharge protection voltage.
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Can be set in app
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Over discharge protection voltage
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Can be set in app
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Overcurrent protection current
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Can be set in app
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Short circuit protection
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Yes
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Single voltage range.
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1~5V
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Single voltage accuracy
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±5mV
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Protection board power supply
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battery pack
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Power supply range of protection board
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40V-100V
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Applicable vehicle type
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Sightseeing car, elderly walker, photovoltaic energy storage, AGV,etc.
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Applicable motor power.
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within 10KW
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Applicable controller current limiting
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within 300A
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Communication function
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Bluetooth with APP
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Coulometer
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yes
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Maximum power consumption
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1W
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Power consumption of shutdown
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0.2mW
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Related Products
FAQ
1.Q: why does the battery need to be balanced?
A:
The battery itself has available capacity, but because of the imbalance between the batteries and the limitation of the safety voltage set to protect the battery, the battery system can not continue to play its due performance. In addition, the service life of the battery on the vehicle is shorter than that of the vehicle itself. Even if the vehicle has not reached the end-of-life period, the battery should be replaced to meet the power performance. However, the cost of battery replacement is quite high, so it restricts the development of electric vehicles to a large extent. The main reason for the imbalance of battery is temperature. In general, when the ambient temperature of lithium-ion battery is 10 ° C higher than its optimal temperature, the life of lithium-ion battery will be reduced by half. Because of the large number of series connection of vehicle battery system. Generally, it is between 88-100 series connection and its capacity is between 20-60kwh. The temperature difference will be generated due to the different loading position of each battery string. Even in the same battery box, there will be temperature difference due to different location and battery heating. And this temperature difference will have a significant negative impact on battery life to make the battery unbalanced, reduce the endurance mileage and cycle life. Because of these problems, the capacity of the whole battery system can not be fully used which is resulted in the loss of the battery system. But if system loss be slowed down, it will greatly extend the service life of the battery system.
The battery itself has available capacity, but because of the imbalance between the batteries and the limitation of the safety voltage set to protect the battery, the battery system can not continue to play its due performance. In addition, the service life of the battery on the vehicle is shorter than that of the vehicle itself. Even if the vehicle has not reached the end-of-life period, the battery should be replaced to meet the power performance. However, the cost of battery replacement is quite high, so it restricts the development of electric vehicles to a large extent. The main reason for the imbalance of battery is temperature. In general, when the ambient temperature of lithium-ion battery is 10 ° C higher than its optimal temperature, the life of lithium-ion battery will be reduced by half. Because of the large number of series connection of vehicle battery system. Generally, it is between 88-100 series connection and its capacity is between 20-60kwh. The temperature difference will be generated due to the different loading position of each battery string. Even in the same battery box, there will be temperature difference due to different location and battery heating. And this temperature difference will have a significant negative impact on battery life to make the battery unbalanced, reduce the endurance mileage and cycle life. Because of these problems, the capacity of the whole battery system can not be fully used which is resulted in the loss of the battery system. But if system loss be slowed down, it will greatly extend the service life of the battery system.
As shown in the picture above, the initial capacity of the battery system is 100%. During the use, the battery will gradually decay due to various reasons (mainly temperature), which is the characteristic of lithium battery. This part of attenuation cannot be recovered by equilibrium. The main reason for the decrease of system capacity is the system loss caused by the unbalanced battery capacity. The system loss is not all battery capacity reduction, but refers to that the battery system can not be used even if there is availability capacity due to imbalance. In general, when the battery capacity drops to 70% – 80%, the battery will be replaced to maintain the range The longer the battery capacity remains above 70%, the lower the cost of electric vehicles.In the absence of equalization and general passive equalization technology, the capacity of the battery system will be reduced to less than 70% in less than 3 years (full charge and discharge once a day). A better passive equalization can keep the battery capacity at 70%. In contrast, a better active equalization can reduce the system loss to the lowest level. This kind of active equalization can effectively reduce the system loss caused by the unbalanced capacity, and then extend the service life of the battery system, delay the replacement period of the battery system, and increase the range.
2.
Q: What is active equalization? A: active equalization is carried out in the way of electricity transfer, with high efficiency and small loss. The methods of different manufacturers are different, and the equalizing current varies from 1 to 10A.
Q: What is active equalization? A: active equalization is carried out in the way of electricity transfer, with high efficiency and small loss. The methods of different manufacturers are different, and the equalizing current varies from 1 to 10A.
As shown in the picture above, each 6 strings of batteries is a group, and the total power of 6 strings of batteries is transferred to the battery with small capacity. Active equalization is based on physical conversion, integrated with power switch and micro inductor. It adopts bi-directional equalization mode. Through the charge transfer equalization between adjacent or similar batteries. The equalization can be carried out regardless of whether the batteries are in discharge, charging or static state, with high equalization efficiency
As shown in the pic. above is the working principle of active equalization charging. The No. 2 battery will transfer the power to No. 1 and No. 3 batteries. The efficient charge transfer makes the voltage of the three batteries keep in a balanced state when charging, so that all batteries can be fully charged.
As shown in the pic. above, active equalization can also balance the battery when discharging. No. 1 and No. 3 batteries transfer the power to No. 2 batteries, and the voltage of the three batteries is discharged in a balanced state all the time, so that all batteries can be used up.
3.Q:What are the categories of active equilibrium?
A:The current active equalization technologies include: capacitive equalization, inductance equalization and transformer equalization. These three active equalization technologies have a low number of users in the market due to poor equalization effect, low equalization efficiency, high price and other factors.
1. Capacity balancing Capacity balance is the energy transfer of adjacent batteries through the capacitor. First, the high-voltage battery discharges to charge the capacitor, and then the capacitor discharges to charge the adjacent low-voltage battery to achieve the balance. The disadvantage is that the balancing ability depends on the voltage difference between two batteries. The larger the voltage difference, the greater the balancing ability, the smaller the voltage difference and the smaller the balancing ability. However, the voltage difference of most batteries is only a few tens of millivolt, so the balancing ability cannot be reflected. Another problem is that if the battery difference is not two adjacent cells, but the first battery and the last one, the capacity balance can only be balanced adjacent cells, to complete the first to the last battery equalization requires all batteries runner involved in energy transfer, cause the whole inside the battery are doing invalid charge and discharge, affect the service life of the battery pack. 2. Inductance equalization The scheme of inductance equalization is similar to that of capacitance equalization, in which energy is transferred through two adjacent cells. Only inductance equalization of the current can be made larger, but there are also voltage difference size affect the equalization ability. At the same time affect the battery life is inevitable. Although the efficiency of synchronous rectification can be achieved close to 95%, the balance of the first battery to the NTH battery requires N times of energy transfer, that is, the efficiency of 0.95 to the NTH power, the balance efficiency is very low.
3. Transformer balance The advantage of the transformer type balancing scheme is that the power is directly taken from the whole battery to charge the lowest voltage battery, and the balancing ability is not affected by the voltage difference between batteries. The disadvantage is that the transformer is an electromagnetic conversion device, which has certain magnetic leakage, and the efficiency is generally not too high. The second disadvantage is that if there are two or more low-voltage cells in the battery pack, then all low-voltage cells in the battery pack need to be charged in turn, but the power source is from the battery pack. Therefore, it is supposed to charge both no.1 and no.2 cells, but when charging no.1 cell, the energy source is actually the whole battery, so the no.2 cell is also taken away. Similarly, when no. 1 cell is charged and no. 2 cell is charged, no. 1 battery is also drained of energy. This results in a part of the invalid energy transfer, increasing the battery’s invalid cycle, affecting the battery life.
4.Active equalization technology of supercapacitor The basic principle is to use the super polar capacitor as the energy temporary storage medium, charge the battery energy with the highest voltage to the super polar capacitor, and then release the energy of the super polar capacitor to the battery with the lowest voltage, so as to reciprocate until all the battery voltages are equal. The constant current DC-DC technology ensures that the current is constant whether the battery is charged or discharged. The advantages of this equalization scheme are as follows:
4.Active equalization technology of supercapacitor The basic principle is to use the super polar capacitor as the energy temporary storage medium, charge the battery energy with the highest voltage to the super polar capacitor, and then release the energy of the super polar capacitor to the battery with the lowest voltage, so as to reciprocate until all the battery voltages are equal. The constant current DC-DC technology ensures that the current is constant whether the battery is charged or discharged. The advantages of this equalization scheme are as follows:
1. Each energy transfer is the highest transfer and the lowest supplement, which avoids the invalid charge discharge cycle and has little impact on the battery life.
2. The cross current DC-DC technology ensures the constant equalizing current and does not affect the equalizing capacity due to the small differential pressure between batteries.
3. Only two energy transfer processes are needed to complete the equalization of primary battery from high to low. The equalization efficiency is not affected by the distance between batteries, which greatly improves the equalization efficiency. The square with an average efficiency of 0.95 is about 0.9.
Company Overview
Chengdu Heltec Automation Technology Co., Ltd. ( English abbreviation Heltec Automation). At present, The company’s research and development and production include OLED dot matrix screen, electronic ink screen, IoT series products, LoRa supporting solutions and high-precision temperature controllers with automatic control algorithms as the core.
At present, there is a strong technical research and development team, a scientific production and manufacturing platform and a strict quality management system.
OUR SERVICES & STRENGTH
Stable performance, cost-effective products, high-quality and superior service, our products have not only gained a good reputation in the country, but also received high-quality evaluation in France, Germany, Russia, the United States, South Korea and other countries.
1). Rigorous quality assurance system.
2). High level of service awareness.
3). High quality team.
4). Components use well-known brands.
5). Quick response customer program.
6). Self-owned processing plant, rapid production, equipped with automatic SMT placement machine, automatic screen printing machine and reflow oven.
3). High quality team.
4). Components use well-known brands.
5). Quick response customer program.
6). Self-owned processing plant, rapid production, equipped with automatic SMT placement machine, automatic screen printing machine and reflow oven.
