With the development of new energy heavy truck, electric engineering machinery, large AGVs (automatic guided vehicle) and high-end electric equipment, 800v high-voltage platform has become an important trend in the power battery industry. 800v high-voltage lithium battery is being widely used in many fields due to its high energy density, high efficiency and fast charging capability. This article will discuss in detail the application scenarios of 800V high voltage lithium battery and its complete design requirements.

I. Application scenarios of 800V high voltage lithium battery

1. New energy heavy truck

in the logistics and transportation industry, the popularity of new energy heavy trucks has formed a powerful substitute for traditional fuel trucks. 800v high-voltage lithium battery provides higher energy density and longer endurance mileage for new energy heavy truck, meeting the demand of long-distance transportation. By using 800v high-voltage battery, the heavy truck can realize faster charging speed, thus reducing the residence time of the vehicle in the charging station and improving the operation efficiency.

2. Electric Engineering Machinery

electric construction machinery, such as electric excavators and electric loaders, is gradually replacing the traditional fuel power equipment. 800v high-voltage lithium battery can provide stronger power support under the condition of high power output. These devices usually need to operate in harsh working environment. The high energy density and high efficiency of 800v high-voltage battery enable them to withstand high load working conditions while maintaining a long working time.

3. Large AGV

large AGVs are widely used in the field of warehousing and logistics, and have the ability of efficient handling and transportation. 800v high-voltage lithium battery provides AGV with higher power output and faster charging speed, greatly improving working efficiency. Because AGV needs to work continuously for a long time, the high energy density of 800v high-voltage battery ensures its endurance under high-intensity use.

4. High-end electric equipment

high-end electric equipment, such as electric aircraft and electric ships, is gradually becoming the main development direction of transportation in the future. 800v high-voltage lithium batteries play an important role in these high-end equipment, providing high energy density and high power output to meet its stringent requirements for power and endurance. At the same time, the 800v high-voltage system can effectively reduce the weight of equipment and improve energy efficiency in the application of electric aircraft and ships.

II. Design requirements of 800V high voltage lithium battery

1. Battery unit design

the unit design of 800v high-voltage lithium battery should consider energy density, power output and thermal management. The battery unit should adopt lithium battery materials with high energy density to improve the energy storage capacity of the whole system. At the same time, the power output of the unit should be designed according to the requirements of the application scenario to ensure high power transmission.In case, the battery can work stably. In addition, the thermal management system should be designed reasonably to prevent the impact of overheating on battery performance.

2. Battery module design

the design of the battery module should consider safety, reliability and maintainability. The module should have good heat dissipation design to ensure safe operation in high temperature environment. At the same time, the connection circuit between modules needs to be designed reasonably to reduce the resistance loss and improve the overall energy efficiency. In addition, the maintainability of the module should be taken into account to facilitate troubleshooting and maintenance during use.

3. Battery management system (BMS)

the battery management system of 800V high voltage lithium battery is the key to ensure the safety and performance of the battery. BMS should have the ability to monitor the battery status in real time, including parameters such as voltage, temperature, charge and discharge status. At the same time, BMS should also have protection functions such as overcharge, overdischarge, short circuit and abnormal temperature to ensure the safe operation of the battery under various working conditions. In addition, BMS should also support communication with external devices to facilitate real-time data transmission and management.

4. System Integration Design

800V high voltage lithium battery the system integration design needs to consider the compatibility with the whole vehicle or equipment. The layout of the battery pack should be reasonable to save space and reduce weight and ensure electricity.The stability of the pool in the device. At the same time, the electrical connection should be properly designed to reduce the connection loss and ensure the efficient transmission of electric energy. In addition, system integration should also consider the compatibility of charging facilities to support fast charging technology and improve charging efficiency.

5. Security design

the safety design of 800V high voltage lithium battery is very important. The battery pack should be waterproof, dustproof and anti-seismic to adapt to various working environments. The thermal management of batteries should be considered in the design to prevent potential safety hazards caused by overheating. At the same time, the battery pack should also be equipped with multiple safety protection measures, such as Fuse, circuit breaker, etc., to ensure that the power supply can be cut off in time under abnormal circumstances to protect the safety of equipment and personnel.

With its high energy density, high efficiency and fast charging capability, 800v high-voltage lithium battery is becoming an important power source for new energy heavy trucks, electric engineering machinery, large AGVs and high-end electric equipment. In order to ensure its performance and safety in practical applications, the design scheme should cover the requirements of battery cells, modules, battery management systems, system integration, safety and other aspects.