Electric technology is increasingly widely used in the field of construction machinery. As a typical new energy construction machinery, electric excavator has become one of its core technologies in the design and application of power battery scheme. This article will introduce the 540v 300AH(162kWh) power battery scheme, focusing on its composition structure, technical parameters, performance characteristics, application advantages and precautions for installation and use, help readers fully understand the practical application value of this power battery solution in electric excavator.

I. Scheme overview

the 540v 300AH power battery solution is a power power system designed based on high voltage and high capacity, which can provide stable and abundant power support for electric excavator. Its nominal capacity is 300 ampere hours, and under 540 volt voltage, the total energy reaches 162 kW hours, meeting the power demand of electric excavator for long time and high intensity operation. This scheme takes into account high energy density, safety and reliability, long service life and environmental adaptability, and is an ideal choice for electric excavator power system.

II, power Battery scheme structure

1. Battery monomer

this solution generally adopts lithium iron phosphate (LiFePO4) battery monomer, which is suitable for high load working conditions of construction machinery due to its high safety, good thermal stability and long service life. The nominal voltage of each cell is aboutIt is 3.2V, and the capacity is suitable for 300AH according to the design.

2. Battery module and assembly

battery cells form modules through series combination, and multiple modules form an integral battery pack through series and parallel connection. Under the voltage of 540V, the battery pack usually consists of 169 cells connected in series (169 × 3.2V & asynmp; 540V), with a capacity of 300AH. Modular design facilitates production, maintenance and replacement.

3. Battery management system (BMS)

BMS is the core control unit of the battery pack, which is responsible for monitoring the battery voltage, current, temperature and charging and discharging status in real time to ensure the safe operation of the battery. BMS has single balance and battery protection (overcharge, overdischarge, overcurrent, short circuit, overtemperature, etc.), and realizes battery health management through data collection.

4. Heat dissipation system

the working environment of the electric excavator is complex and the battery pack generates a large amount of heat. The liquid-cooled or air-cooled cooling system is adopted to ensure that the battery temperature is stable within a safe range and improve the battery performance and life.

5. Shell and protection design

the battery pack shell is made of high-strength protective materials, with waterproof and dustproof functions, which can meet the level above IP54 and ensure the safe and reliable operation of the battery under harsh working conditions. And designed with anti-seismic structure to cope with the vibration shock of excavator working.

III. Main technical parameters

IV. Performance characteristics

1. High energy density and large capacity

the total energy reserve of 162kWh supports electric excavator continuous operation for a long time, reducing charging times and improving working efficiency. The 300AH large-capacity battery pack ensures sufficient power supply and meets the demand of high-power load.

2. High security

3. Excellent temperature adaptability

wide temperature working range (-20 ℃ to 60 ℃) enables the power battery to adapt to various harsh climate and working environment, ensuring that the electric excavator can operate stably under different working conditions.

4. Long cycle life

the cycle life of more than 2500 times means that the battery pack can be used for many years under normal use conditions, reducing the replacement frequency and maintenance cost, and improving the economy.

5. Modular design and convenient maintenance

the battery pack adopts modular design, which facilitates quick replacement and maintenance, reduces equipment downtime and improves operation continuity.

6. High heat dissipation efficiency

adoptLiquid cooling or high-efficiency air cooling system ensures stable temperature control of the battery pack during high load operation to avoid performance attenuation or potential safety hazards caused by overheating.

V. Application advantages

the 540v 300AH power battery solution provides strong and stable power support for electric excavator, replacing the traditional internal combustion engine power system and realizing the advantages of zero emission, low noise and low maintenance. This scheme, together with high-efficiency motor and electronic control system, improves the dynamic response speed and smoothness by excavator, making the equipment more flexible and efficient in excavation, loading, rotation and other operations. In addition, the compact and reasonable structure of the battery pack is conducive to the optimization of the vehicle design, reducing the weight of the whole machine, and improving the mobility and endurance.

VI. Precautions for installation and use

1. Installation environment

the battery pack should be installed in a well ventilated, dry and non-corrosive gas environment to avoid direct sunlight and high temperature areas and ensure the safety and service life of the battery.

2. Electrical connection

all electrical connections must comply with the design specifications and adopt qualified connectors and cables to ensure stable and reliable current transmission and prevent poor contact and electrical faults.

3. Charge and discharge management

use matching charging devices to avoid overcharging and overdischarging. When charging, the charging protocol recommended by the manufacturer should be followed, and the charging safety and efficiency should be ensured by cooperating with BMS monitoring.

4. Temperature Monitoring

monitor the battery temperature in real time during work, and enable the heat dissipation system when necessary to prevent the high temperature from affecting the battery performance and safety.

5. Regular maintenance

regularly check the status of the battery pack, including parameters such as voltage, current, temperature, etc., and clean up the dust and impurities on the surface of the battery pack in time to ensure smooth heat dissipation and safe operation.

540v 300AH(162kWh) power battery solution has become an ideal choice for Electric long service life power system due to its high energy density, high safety and excavator advantages. Through reasonable design and perfect management, this scheme can meet the power demand of electric excavator under high strength and high load conditions, and improve equipment performance and operation efficiency.