Electric Vehicles Battery Management System From KLSBMS Factory

The Core Technologies of Electric Vehicles: Battery, Motor, and Electronic Control The three core technologies in electric vehicles, namely battery, motor, and electronic control technology, play a crucial role in determining the overall performance of electric vehicles. These technologies are intimately associated with two key aspects: the cruising range and acceleration performance. Similar to the well-known wooden barrel principle, any deficiency or weakness in one of these three core technologies will have a direct and significant impact on the vehicle’s performance. The battery technology affects the energy storage and supply, determining how far the vehicle can travel on a single charge. The motor is responsible for converting electrical energy into mechanical power, influencing the vehicle’s acceleration and speed capabilities. And the electronic control technology manages and optimizes the operation of the battery and motor, ensuring their coordinated and efficient functioning. In conclusion, continuous innovation and improvement in these three core technologies are essential for the advancement and enhanced competitiveness of electric vehicles in the automotive market.

The Indispensable Role of the Battery Management System (BMS) in Electric Vehicle Electronic Control The Battery Management System (BMS) stands as the fundamental cornerstone in the realm of electronic control within electric vehicles. In the absence of this highly crucial system, the charging, discharging procedures, and the overall service life of the power battery would be severely hampered. If we draw an analogy where the battery is regarded as a team of soldiers, then the BMS system assumes the dual roles of a brilliant strategist and a commanding general, empowering electric vehicles to attain peak efficiency in practical applications. Via the BMS, electric vehicles are enabled to exercise precise control and efficient management over the battery. Each individual battery cell is maintained within a viable operational range, effectively warding off problems such as overcharging, over-discharging, and the dreaded thermal runaway. Considering the relatively limited capacity of a single battery cell, a large number of cells are assembled into modules, and multiple modules are further combined to constitute a complete battery system. Commonly, a battery system consists of hundreds or even thousands of individual cells. The BMS plays an absolutely vital part in guaranteeing that every single cell functions within the appropriate parameters. Put simply, the BMS emerges as a key determinant in upholding the optimal performance of the battery system. This discussion naturally leads to the significance of an Electric Vehicle BMS Manufacturer. These manufacturers are of utmost importance as they are dedicated to the research, development, and supply of these essential BMS for electric vehicles, thereby making a substantial contribution to the sustainable progress and enhanced functionality of the electric vehicle industry.

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Inquire Now	Model	Dimensions(mm)	Cells Series	Battery Type	Input Charging Voltage	Continuos Curren	Remark
Inquire Now	KLS-184	1008514	3S-5S	NMC/LFP	12V	20A~120A	null
Inquire Now	KLS-055	1008514	8S-16S	NMC/LFP	24V 36V 48V 60V	50A~200A	null
Inquire Now	KLS-030	1008514	3S	NMC/LFP	24V 36V 48V 60V 72V 84V 1500V	10A~500A	null
Inquire Now	KLS-137	1008514	5S-32S	NMC/LFP	12V 24V 36V 48V 60V 72V 84V 96V 108V	50A	null
Inquire Now	KLS-178	1008514	3S-5S	NMC/LFP	12V	20A~60A	null
Inquire Now	KLS-057	1008514	8S-16S	NMC/LFP	24V 36V 48V 60V	50A~200A	Reserve active balancing module
Inquire Now	KLS-231	22010019mm	8S-24S	NMC	24V	5A~150A	CAN
Inquire Now	KLS-232	2107025	7S-17S	NMC/LFP	24V	5A~200A	CAN/RS485
Inquire Now	KLS-182	21010020	12S-24S	NMC/LFP	24V 36V 48V 60V 72V	20A~200A	null
Inquire Now	KLS-071	1008514	9S-17S	NMC/LFP	24V 36V 48V 60V	20A~70A	null
Inquire Now	KLS-024	1008514	12S-24S	NMC/LFP	24V 36V 48V 60V	20A~150A	BUZZER

How does the BMS ensure the safety and performance of the power battery?

The Battery Management System (BMS) ensures the safety and performance of the power battery through the following ways:

1. Cell Monitoring

Voltage Monitoring: The BMS continuously monitors the voltage of each individual battery cell. In a battery pack, different cells may have slightly different electrochemical characteristics. For example, in a lithium – ion battery pack, if a cell’s voltage rises too high during charging (over – voltage), it can lead to problems such as electrolyte decomposition and even thermal runaway. The BMS sets upper and lower voltage limits (usually, the charging voltage limit for a lithium – ion cell is around 4.2 – 4.3V, and the discharging voltage limit is around 2.5 – 3.0V). When the voltage of a cell approaches these limits, the BMS takes corrective actions such as reducing the charging current or stopping the discharge process.
Current Monitoring: It keeps a close eye on the current flowing in and out of the battery. High – current charging or discharging can cause overheating and damage to the battery. The BMS limits the maximum charge and discharge current according to the battery’s specifications. For example, in some high – power battery applications, the maximum charge current might be limited to a few hundred amperes to prevent excessive heat generation and potential safety hazards.
Temperature Monitoring: Temperature is a critical factor affecting battery performance and safety. The BMS uses temperature sensors placed near or on the battery cells to monitor the temperature. Batteries can experience reduced performance and even damage when the temperature is too high or too low. For lithium – ion batteries, the ideal operating temperature range is typically between 15 – 35°C. If the temperature exceeds a certain threshold (usually around 60 – 80°C), the BMS can trigger cooling mechanisms such as activating a cooling fan or reducing the charging/discharging rate to prevent thermal runaway.

2. State Estimation

State – of – Charge (SOC) Estimation: The SOC represents the remaining capacity of the battery as a percentage of its total capacity. Accurate SOC estimation is crucial for electric vehicles to provide reliable range predictions to the driver. The BMS uses a combination of methods such as coulomb – counting (tracking the amount of charge that enters and leaves the battery), open – circuit voltage measurements (which is related to the battery’s SOC when it’s at rest), and advanced algorithms that consider factors like battery aging and temperature. For example, in a well – calibrated BMS, the SOC estimation error can be controlled within a few percentage points.
State – of – Health (SOH) Estimation: SOH reflects the overall condition and remaining useful life of the battery. The BMS monitors parameters such as battery capacity fade over time, internal resistance increase, and self – discharge rate. By analyzing these changes, it can estimate the SOH. For instance, if a lithium – ion battery’s capacity has decreased by 20% from its initial value after a certain number of charge – discharge cycles, the BMS can adjust the control strategies accordingly and provide an indication to the user about the battery’s health.

3. Battery Balancing

Active Balancing: In a battery pack, individual cells may have different capacities due to manufacturing tolerances or different usage patterns. Active balancing systems in the BMS transfer energy between cells to equalize their states. For example, if one cell has a higher voltage (more charge) than others, the BMS can use a circuit to transfer some of the charge from the higher – voltage cell to the lower – voltage cells. This helps to ensure that all cells are used efficiently and prolongs the overall life of the battery pack.
Passive Balancing: Passive balancing dissipates excess energy from the cells with higher voltages. This is usually done through resistors. While it’s a simpler method than active balancing, it can lead to some energy loss. However, it still helps in maintaining the voltage uniformity of the battery pack to a certain extent.

4. Protection and Control

Over – charge and Over – discharge Protection: As mentioned earlier, the BMS strictly controls the charging and discharging processes to prevent the battery from being over – charged or over – discharged. When a potential over – charge or over – discharge situation is detected, it can immediately cut off the charging or discharging circuit to protect the battery.
Thermal Management Control: Based on the temperature monitoring results, the BMS can control the thermal management system of the battery. In addition to the cooling mechanisms mentioned above, it can also manage heating elements in cold environments to warm up the battery to the optimal operating temperature range. This ensures that the battery can perform well in a wide range of environmental conditions.

Shenzhen Kinglisheng New Energy Eechnology .,Ltd

Electric Vehicles Battery Management System From KLSBMS Factory

Click the yellow button in the form to access the product details page and explore our EV BMS system

How does the BMS ensure the safety and performance of the power battery?

1. Cell Monitoring

2. State Estimation

3. Battery Balancing

4. Protection and Control

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