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Cylindrical high-energy lithium iron phosphate power battery
The battery technology is not only the key point but also the bottle neck of the new energy vehicle industrialization. KAM has obtained breakthroughs in the battery development. The battery performances have exceeded other type of Lithium power battery, and have broken the capacity limitation of traditional cylindrical battery. Cylindrical lithium power battery manufactured by KAM is featured with high safety, large capacity, high energy ratio, significant low temperature performance and small internal resistance。 ★High safety: The design of the structure with all tabs leads to balance the current thermal field per unit area of ??the plate, solves the problem of internal heat dissipation of the lithium battery, and greatly improves the safety of the battery. The battery module adopts a high-sealing explosion-proof, flame-retardant, waterproof and dust-proof aluminum alloy battery box and an active balanced battery management system to ensure that the battery pack is completely free of flammable, explosive, and deformable safety issues during use and charging. It can be used with confidence. ★Large capacity and high energy density: The single battery capacity specification is 90Ah/3.2V, the energy density ratio reaches 160Wh/kg, and the volume ratio is 10-20% higher than that of ordinary batteries. For example, a 10-12 meter electric bus needs to store more than 200-250KW.h of electric energy. If a traditional battery solution is adopted, it needs to use thousands or even tens of thousands of battery cells in series and parallel to be used, which leads to the reliability of the battery. Significant decline in sex. However, the use of high-power and large-capacity lithium iron phosphate power batteries only needs to combine about a thousand monomers, and its reliability has been significantly improved compared with the former. ★High charging and discharging rate: The world’s advanced laser end-face welding technology and reversible safety valve structure are adopted. The internal battery pole pieces are in the form of full tabs, and the current collector area is maximized. The heat generation of the battery during charging and discharging is similar to that of ordinary stacks. Compared with the chip power battery, it is reduced by about 60-70%. ★Long service life: In order to ensure the performance and service life of the battery, the battery must be equipped with a patented airtight explosion-proof flame-retardant constant temperature aluminum alloy battery box and an active balanced BMS battery management system, 90% DoD charging and discharging, and a single battery life of about 2000 After forming the whole vehicle battery module, the service life is about 1500 cycles. ★Strong low-temperature performance: With the national patented battery compartment temperature adjustment structure design, it can release more than 90% of the capacity at room temperature in an environment of -20°C. In the actual operation of the vehicle, the ambient temperature will be between minus-20°C and 40°C as the season changes. The temperature adjustment system can control the temperature change range of the battery compartment between 0-30°C, thereby significantly improving the battery Performance and service life.
Active balanced battery management system
The technology of battery management system which is the key component of the lithium battery power system is more complicated than it of the motor controller. KAM has succeeded in developing the active balanced battery management system that has achieved active balanced current function with 5A current. This system has occupied the domestic leading level. The main Technical advantages are as follows。
Aluminum alloy sealed battery cabinet
Aluminum alloy sealed battery cabinet has been proved to be decisive in the safety performance and the service life of battery, the technical feature are as follows： ★Modular structure of battery adopts silica gel heat conduction so as to be easy for cooling；? ★Aluminum alloy sealed battery cabinet are featured with the explosion-proof, flame-proof, water proof and dust-proof；? ★Battery cabinet built-in BMS management system shall balance 5A current, and makes it possible for the aged cell with 10% capacity deviation still can be functioned
Water Cooling Motor
Generally, smaller motors use air cooling to reduce the surface temperature of the motor housing to achieve heat dissipation. However, for high-torque drive motors such as 10-12m electric buses/tourist buses, if the air-cooling method is still used, the heat dissipation effect of the motor will be relatively poor. The operating temperature of the motor is usually 90°C, which affects the motor efficiency And reduce the life of the motor. The water-cooled drive motor designed by our company does not have a heat sink on the outer surface of the casing, which reduces the size and weight of the motor and facilitates the layout of the car chassis. And because of the reduction in weight, battery energy can be saved, and the driving range of electric vehicles can be extended. Motor features: high-torque regenerative braking has high recovery efficiency, low water-cooled heat dissipation temperature rise, shock resistance, high reliability, and long service life.
Water Cooling Motor Controller
KAM has rich experience of nearly 10 years on development and improvements of drive system for electric vehicles. So far, KAM has developed a complete new motor controller which can be used for controlling both permanent magnet synchronous motor and asynchronous motor, the maximum output power is up to 240kW. This motor controller is compatible for the vehicles vary from 10meter to 18meter buses including double-desk buses. This system has been in production with die-casting mold and already be the standard product,no need to make any changes except software upgrades. With highly integrated design and convenient and fast installation, which only one box with all above functions, ,it’s definitely a convenient product for after-sale service in future.
The new KAM vehicle management system controller increases the function of power cut off in emergency situation which strictly meets the Europe and the U.S. Safety standard and the ingress protection grade can reach IP65. The system includes the followingfeaturesmainly： ★Multiplex high-voltage fuse protection circuit。 ★Dual-way vacuum relay switch for cutting off the total power supply in emergency。 ★Air conditioning High voltage power control。 ★DC-DC/ defroster for high-voltage power supply output。 ★Integrated with the controller for 3.7KW electric power steering pump ( Both DC input and AC output terminal adopt EMC filter)。 ★Integrated with the controller for 3.7KW electric air compressor (Both DC input and AC output terminal adopt with EMC filter)。 ★The charger output control (including the signal control of charging confirmation, vacuum contactor and fuse, etc.)。 ★The pre-charge circuit of vacuum contactor of motor controller。 ★Netbridge control module: CAN1 communicates with the BMS module and the CAN2 communicates with the charger, drivepower control from motor controller, power calculation and other functions。 ★Power control for fan and water pump of cooling system as well as the fan has the function of PWM temperature control and speed automatically adjustment。 ★Structural features: The shell is made by the aluminum alloy with processing technology of oxidation and sandblasting on the surface. The Ultra-thin design is used for hanging installation in the rear of bus. All connectors are imported products, it’s more convenient and quicker for maintenance. The replacement time for every component will be not over 30 minutes。
KAM CCS 75kW Charger
The electric vehicle DC charging integrated machine designed by KAM is mainly used for fast charging of electric vehicles. The product can be installed outdoors, with a waterproof and dustproof design. The protection level is IP54. This product combines the charging interface, human-computer interaction interface, and charger , Communication, billing and other components are integrated into one, adopting modular design, with the characteristics of convenient installation and debugging, simple operation and maintenance.
3.3 MW Portable Energy Storage Cabinet
The storage capacity of the standard 40-foot container of Galaxy is as high as 3.3MW·h, which can be used by about 1,000 people in 200-250 families. It has the following advantages and characteristics: ★Long discharge time: The discharge time of the 3MW·h energy storage cabinet can reach 6-9 hours (driving power 450-300KW). ★High efficiency: Due to the use of Galaxy low internal resistance lithium iron phosphate cylindrical battery, the operating efficiency of the system is as high as 95%, which is about 3% higher than other types of lithium batteries. ★Low heat generation and low cooling power consumption: The heat generation at full load driving state is only 10KW, which is only 50% of the same power lithium battery. The forced ventilation cooling system can be directly adopted, which can save a lot of cooling power consumption, and the air cooling system is the largest The power consumption is 750W, and the temperature rise of the battery can be maintained no more than 3°C; the maximum heat generation in the high-current charging state is 30KW, and the forced air cooling system can maintain the temperature rise of the battery no more than 8°C. However, if the air conditioning system is used to maintain the same temperature rise, the required cooling capacity is about 30KW, and the electrical energy consumption reaches 10KW. ★Safe and reliable: The high-energy battery module adopts a fully sealed battery structure, and the exterior structure is convenient for ventilation and heat dissipation. The battery has been isolated from the contact with the outside air from the source, and the fire extinguishing system can be automatically activated through the BMS network temperature monitoring system. ★Long cruising range: It is used to drive a 1,000-ton cargo ship and is equipped with a high-efficiency electric drive system, which can achieve a driving range of 150 kilometers after one charge. ★The battery management system adopts the two-way balanced battery management system independently developed and produced by Yinhe. The balancing current can reach 5A, which can balance the battery cells with a maximum capacity deviation of 10%, which greatly improves the battery life and effectively prevents the battery from being overcharged and over-discharged. Damage and unsafe factors caused by it. ★Charging and battery swapping dual modes: adopting standard energy storage containers can achieve dual modes of fast charging and quick cabinet change. The 900KW charging cabinet (150KWx6 channels) independently developed by Yinhe can be charged within 3 hours.
About us and company introduction
Xiangtan Yinhe New Energy Co., Ltd. is located in the national high-tech zone of Xiangtan City. It is a company that develops and produces high-energy cylindrical lithium iron phosphate power batteries (unit capacity 90Ah, energy density 160Wh/kg), electric vehicle drive system assembly, and charger station ,battery management system and high-tech enterprise of supporting products. The equipment has an annual capacity of 200 million watt-hours and has a number of national invention patents and utility model patents. The products are exported to Germany, the Netherlands, Norway, Italy, the United States and other European and American countries and regions, and have obtained the EU "WVTA vehicle certification".
Philosophy: Honesty, pragmatism, standardization, and win-win cooperation; business model: market-oriented, production-based, and quality as the backing!
R&D, production and sales of large-capacity cylindrical lithium iron phosphate power batteries and battery management systems, electric vehicle drive system assemblies, and charging station equipment.
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