Vehicle-mounted UPS embodies energy-saving technology in modified vehicles. Saving energy, saving resources, protecting the environment, and people-oriented development strategies have become the development direction of all walks of life, and the UPS power industry has naturally become the primary practitioner of this concept. As the main energy supply equipment in special modified vehicles, the vehicle-mounted UPS power supply has become a crucial factor in its energy saving and consumption reduction. UPS manufacturers are also constantly proposing various solutions and increasing investment in research and development to achieve energy saving and consumption reduction.

　　The embodiment of energy-saving technology of vehicle-mounted UPS in modified vehicles

　　Vehicle-mounted UPS manufacturers are also constantly proposing various solutions and increasing R&D investment to achieve energy saving and consumption reduction. The efficient and environmentally friendly green vehicle-mounted UPS power supply was born under this driving force and has become a star in the UPS industry. Xinxing gradually replaced the older generation UPS products based on traditional technology. In fact, with proper planning, users can save nearly 50% of usage costs. Therefore, as the power supply guarantee unit in the construction of the computer room, the U vehicle-mounted PS uninterruptible power supply must also assume the responsibility of energy saving and consumption reduction.

　　In order to achieve energy saving and consumption reduction of vehicle-mounted UPS, we need to improve or enhance some technical parameters of the UPS itself through technical means, and at the same time optimize the design of some functions of the UPS. From the perspective of technical parameters, improvement of input power factor and reduction of input current harmonics are key factors to achieve this goal; and from the perspective of implementation functions, we also need to pay more attention to the overall operating efficiency of the UPS system and battery charge and discharge management functions , to further optimize system functions.

　　With the vigorous development of various special-function vehicles and the ship and yacht industry, vehicle-mounted UPS lithium batteries are specially designed for vehicle-mounted systems, which greatly improves the reliability of the power supply system, completely eliminates the impact of the power grid, and is widely used in various special modified vehicles. Lithium vehicle-mounted UPS batteries have complete protection functions. Regardless of overload, overvoltage, short circuit, battery undervoltage, overtemperature, or inverter power supply system, the system will automatically shut down, providing highly reliable power quality.

　　At present, the energy saving of vehicle-mounted UPS on specially modified vehicles can be considered from all aspects such as scheme, efficiency, reduction of current harmonics, improvement of input power factor, and land saving.

　　1. Adopt UPS centralized power supply solution

　　Vehicle-mounted UPS is usually divided into distributed power supply and centralized power supply. The overall cost of centralized power supply is lower than that of decentralized power supply. As the UPS capacity increases, the cost per unit capacity decreases. Therefore, if medium and large-capacity UPS are used for centralized power supply, the total investment in the UPS system can be reduced in terms of cost. The reliability of centralized power supply is far greater than that of decentralized power supply, and the reliability of large-capacity UPS is higher than that of small and medium-capacity UPS.

　　2. Improve UPS efficiency

　　The efficiency of the UPS directly determines the energy consumption of the entire UPS system. In addition, the ECO economic operation mode of the vehicle-mounted UPS can also be used in a better mains environment, that is, the UPS is directly powered by the static bypass. At this time, the inverter In the hot standby and non-output state, once the mains power exceeds the voltage and frequency range allowed by ECO, the UPS immediately switches to the reverse conversion power supply state. Since the inverter under ECO is in standby mode, its own loss is very small. At this time, the overall efficiency of the UPS can reach more than 97%, which also effectively reduces the energy consumption of the UPS system.

　　3. Reduce input current harmonics and improve input power factor

　　In addition to greatly reducing the harm caused by reducing input current harmonics and improving input power factor, it can also reduce the cost of front-end power distribution devices and cables, and at the same time greatly reduce the capacity of the front-end generator of the UPS power supply system of modified vehicles. , thereby greatly reducing power system costs. Current methods of harmonic control include 6-pulse rectifier + passive filter, 12-pulse rectifier + passive filter, IGBT rectifier, etc. These can achieve low input current harmonics (<3%) and high input power factor (> 0.99), thereby achieving the energy saving requirements of the data center.

　　4. Save floor space

　　The space on the modified vehicle is very precious. If a relatively small UPS is used, it will undoubtedly lead to effective utilization of floor space, which is also an important manifestation of energy saving. Vehicle-mounted UPS is the core of the entire AC power supply link. Energy-saving UPS can not only save a large amount of equipment investment and maintenance costs, but also greatly reduce later operating costs. The comprehensive application of UPS energy-saving technology in data centers will effectively reduce energy consumption.

　　5.Battery management

　　UPS is equipped with a battery pack, and the user's investment in the battery pack often accounts for a large part of the investment in the entire UPS power supply system, even exceeding the investment in the UPS itself, and the service life of the battery is significantly lower than that of the UPS equipment. The intelligent battery management technology of UPS mainly includes: battery float charge management (float charge control), charging temperature compensation, and intelligent discharge termination voltage control. In addition, it should also have regular automatic battery detection and battery leakage detection functions. In addition, you can also choose a UPS with a wider input voltage range to reduce the number of battery discharges. Through the above-mentioned technologies, the battery life can be greatly extended by 2 to 3 years.

　　What are the functions of vehicle-mounted UPS power supply on modified vehicles?

　　The voltage is stable. The mains voltage is easily affected by the quality of the power transmission line. The voltage of users closer to the substation is higher, about 130~120V, and the voltage of users farther away from the substation is lower, about 100~90V. The voltage is too high. Or if it is too low, the life of the user's equipment will be shortened, and in severe cases, the equipment will be burned. Using a vehicle-mounted UPS can provide a stable voltage power supply with a voltage change of less than 2V, which can extend the life of the equipment and protect the equipment.

　　Power outage protection, in the event of an instantaneous power outage, the vehicle-mounted UPS uninterruptible power supply will immediately convert the battery DC power into AC power to continue supplying power.

　　High and low voltage protection, when the mains voltage is too high or too low, the UPS built-in voltage regulator (AVR) will make appropriate adjustments to keep the mains voltage within the usable range. If the voltage is too low or too high, it can be used range, the UPS converts the battery DC power into AC power to continue supplying power to protect user equipment.

　　The frequency is stable. The mains frequency is divided into 50Hz/60Hz. The so-called frequency is the period of change per second. 50Hz is 50 cycles per second. The mains frequency in Taiwan is 60Hz and in the mainland is 50Hz. When the generator is running, the speed of rotation caused by sudden changes in the customer's power consumption will cause the frequency of the converted power to drift. The power converted by the UPS uninterruptible power supply can provide a stable frequency.

　　Waveform distortion processing. Since power is transmitted to customers through transmission and distribution lines, the use of various machines and equipment often causes distortion of the mains voltage waveform, because waveform distortion will produce harmonic devices and increase the temperature of the power system transformer. It is generally required that the distortion rate is <5%, and the general UPS design distortion rate is <3%.

　　To monitor the power supply, the intelligent communication interface and monitoring software of the vehicle-mounted UPS can record the mains voltage frequency, power outage time and number to achieve power monitoring, and can arrange the UPS uninterruptible power supply timetable to turn on and off to save energy.

　　Suppresses common mode noise, which occurs between the live/neutral wire and the ground wire.

　　Suppress transverse mode noise, which is generated between the live line and the neutral line.

　　For surge protection, generally vehicle-mounted UPS uninterruptible power supplies will be equipped with surge absorbers or tip discharge designs to absorb surges to protect user equipment.

　　Summary: The use of a new energy-saving vehicle-mounted UPS power supply ensures uninterrupted and stable output of the power supply and enables normal work. Lithium battery vehicle UPS is specially designed for special vehicles. , small size, light weight, rack-mounted, saving space, reducing vehicle load, using lithium battery for energy storage, making installation more convenient and maintenance simpler.

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