A towed energy storage power supply support vehicle

Abstract

The utility model relates to a kind of towed energy storage power supply guarantee vehicles, belong to mobile battery energy storage technical field.The utility model includes energy storage battery, power conversion system PCS, DC regulated power supply, solar power generation component, trailer and square cabin, it uses energy storage battery pack as energy storage device, solve the problem of diesel generator set type power supply guarantee vehicle vibration and sound huge, while completely eliminates the emission of high-temperature flue gas, avoids power supply guarantee vehicle in test site forms air turbulence and vibration interference, reaches the purpose of test site or battlefield sound silence and infrared silence operation.

Description

Technical Field

[0001] This utility model belongs to the field of mobile battery energy storage technology, specifically relating to a towed energy storage power supply support vehicle. Background Technology

[0002] Power systems frequently require field operations and performance testing, necessitating a towable outdoor power supply unit capable of handling various tasks such as nighttime reconnaissance, outdoor disaster relief, water pumping, powering monitoring and measuring instruments, and providing living quarters for test personnel. Ensuring power supply for these systems presents several unique challenges: First, some optical detection systems are sensitive to air turbulence; the power supply equipment should not generate excessive waste heat and release it into the air, causing turbulence and interfering with the accuracy of the optical detection system. Second, optical path testing equipment at the test site is extremely precise and sensitive to external vibrations; therefore, the power supply equipment should not generate significant noise or vibration that could affect the equipment. Third, during combat operations, power systems must operate as silently as possible, both acoustically and infrared-based, to avoid detection by the enemy. Fourth, due to the specific nature of these power systems, there are pulse power requirements, necessitating the power supply equipment to provide a high-power output far exceeding its rated power for a short period.

[0003] Traditional outdoor power supply vehicles use three-phase diesel generator sets to provide external power. The three-phase diesel generator set is housed in the trailer of a towed vehicle, and the diesel generator set produces three-phase AC power, which is then output to three-phase load equipment. Alternatively, a rectifier and a single-phase inverter can be used to convert the three-phase AC power produced by the generator set into single-phase AC power, which is then output to single-phase load equipment. Finally, a rectifier can be used to convert either three-phase or single-phase AC power into DC power, which is then output to DC load equipment.

[0004] Traditional outdoor diesel generator set power supply vehicles have many drawbacks and are unsatisfactory in practical use. First, the diesel generator produces significant vibration and noise, easily interfering with precision instruments at the test site. Second, the diesel generator sets release high-temperature fumes, creating air turbulence that interferes with electrical systems. Third, the loud noise and high-temperature fumes make it difficult to achieve silent or infrared operation. Fourth, diesel generator sets lack the capability for short-term pulse power output; achieving high power output requires a proportional increase in generator capacity, drastically increasing the size, weight, and cost of the power supply vehicle. Furthermore, the noise from the diesel generator sets significantly interferes with the work and communication of test personnel, and the large amounts of fumes and noise emitted are detrimental to environmental protection. Utility Model Content

[0005] (a) Technical problems to be solved The technical problem this invention aims to solve is: to design a towed energy storage power supply support vehicle to overcome the following shortcomings of traditional outdoor diesel generator set power supply support vehicles, ensuring its usability in power system testing sites and combat sites. First, diesel generators produce tremendous vibrations and noise, which can easily interfere with precision instruments at the test site; Secondly, diesel generator sets release high-temperature exhaust gases, creating air turbulence that can interfere with the optical detection system of the power system. Thirdly, the enormous noise and high-temperature exhaust of diesel generators make it difficult to achieve silent operation via sound and infrared. Fourth, diesel generator sets do not have the ability to output short-term pulse power. To achieve high power output, the capacity of the diesel generator set must be increased proportionally, which will lead to a sharp increase in the size, weight and cost of the power supply vehicle.

[0006] Fifth, the noise from the diesel generator set significantly interferes with the work and information exchange of the test personnel, and its large emissions of smoke and noise are also detrimental to environmental protection.

[0007] (II) Technical Solution

[0008] To address the aforementioned technical problems, this utility model provides a towed energy storage power supply support vehicle, characterized by comprising an energy storage battery, a power conversion system (PCS), a DC regulated power supply, solar power generation components, a trailer, and a container. The trailer serves as a platform supporting the container, energy storage battery, PCS, DC regulated power supply, and solar power generation components. The container has multiple layers of racks inside, with the energy storage battery, PCS, and DC regulated power supply placed on these racks. The solar power generation components are placed on the top of the container. The solar power generation components can provide three-phase or single-phase AC input to the PCS. The PCS can convert the three-phase or single-phase AC to DC to charge the energy storage battery and convert the DC from the energy storage battery to three-phase or single-phase AC. The solar power generation components can convert solar energy into AC to supply the input of the PCS. The DC regulated power supply can convert the AC input of the PCS into 28V DC.

[0009] Preferably, the energy storage batteries are grouped in a 240S1P configuration and heated using a resistance heating film. The energy storage batteries consist of 12 battery boxes and 1 high-voltage box. Each battery box has a micro switch, two output connectors, one communication connector, and one heating connector. When the temperature of the energy storage battery is below 0°C, the energy storage battery starts to heat up. The shell of the battery box is assembled by welding two layers of aluminum alloy plates, with air in the interlayer.

[0010] Preferably, the PCS is a three-phase PCS for energy storage. Through a three-phase three-level converter, rectification and inversion are realized. The rectified output is converted from three-phase AC power to DC power and then injected into the energy storage battery.

[0011] Preferably, the DC regulated power supply adopts a 380Vac input, a 28Vdc output, and a maximum output power of 5kW.

[0012] Preferably, the solar power generation module is capable of outputting 2kW of 230V single-phase AC power.

[0013] Preferably, the support vehicle is equipped with four outriggers around its bottom and a towing arm at the front, with steerable tires mounted on the towing arm.

[0014] Preferably, the trailer has a toolbox at the front for storing tools and cables.

[0015] Preferably, the trailer is equipped with a spring-loaded shock absorption system, two rubber tires, and a hook.

[0016] Preferably, ventilation fans are installed around the container to provide ventilation and cooling for the equipment inside.

[0017] Preferably, the energy storage battery is a lithium iron phosphate energy storage battery.

[0018] (III) Beneficial Effects This utility model uses an energy storage battery pack as an energy storage device, which solves the problem of excessive vibration and noise in diesel generator set power supply vehicles. At the same time, it completely eliminates the emission of high-temperature flue gas, avoids air turbulence and vibration interference in the test site, and achieves the purpose of silent and infrared silent operation in the test site or battlefield.

[0019] This invention utilizes a high-discharge-rate battery, achieving high-power pulse discharge in a relatively small size. This meets the specific power requirements of the power system and avoids the drawbacks of bulky, heavy, and expensive batteries. Charging is done via mains power or solar energy, eliminating the need for fuel and producing no noise or harmful emissions. This benefits the health of on-site testing personnel and promotes energy conservation and emission reduction.

[0020] The towed energy storage power supply support vehicle involved in this utility model has been applied in multiple projects and has great potential for promotion and application, which will generate good economic benefits. Attached Figure Description

[0021] Figure 1 This is a diagram of the towed energy storage power supply support vehicle of this utility model. Figure 2 This is a schematic diagram of the operating principle of a towed energy storage vehicle. Figure 3 Three-dimensional model images of a towed energy storage power supply vehicle from different angles. Detailed Implementation

[0022] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0023] This utility model relates to a towed energy storage power supply vehicle, more specifically, to a mobile outdoor battery energy storage and supply device. Utilizing battery energy storage and power supply, it can provide single-phase, three-phase, and DC power to loads in urban outdoor or field environments. When there is mains power supply, it can draw power from the grid to supplement energy, and when there is sufficient sunlight, it can supplement energy through solar energy. When necessary, this power supply vehicle can also feed energy back to the grid, playing a role in peak shaving and valley filling. The main components of this towed energy storage power supply vehicle include an energy storage battery, a power conversion system (PCS), a DC regulated power supply, solar power generation components, a trailer, and a container. Its composition is shown in the attached figure. Figure 1 As shown. The trailer and the container serve as the carrying platform. The interior of the container has a multi-layer rack, on which equipment such as energy storage batteries, PCS, and DC regulated power supplies are placed. Solar power generation components are placed on the top of the container. There is a toolbox at the front of the trailer for storing commonly used tools and accessories such as cables.

[0024] The towed energy storage power supply protection vehicle of this utility model is as follows: Figure 2 As shown, the modular unit is mounted on a trailer equipped with a spring shock absorption system, two rubber tires, and a hook, allowing it to be towed by various vehicles, including common off-road vehicles, passenger cars, and light trucks. Energy storage batteries, PCS (Power Control System), DC regulated power supplies, and other equipment are mounted on racks within the modular unit, all using standard chassis structures for quick plug-and-play replacement. Ventilation fans are installed around the modular unit, automatically ventilating and cooling the equipment based on ambient temperature and operational status.

[0025] To address the issue of diesel generator sets lacking short-term pulse power output, this invention employs a high-rate energy storage battery as the energy storage and release medium. Its maximum discharge rate reaches 30C, and its continuous discharge rate reaches 15C, meaning the short-term pulse power can reach over 30 times the rated power, and the continuous discharge overload power can reach over 15 times the rated power, fully meeting the pulse power requirements of the power system. The vehicle is equipped with a high-power PCS, which can convert three-phase AC or single-phase AC from the mains power supply into corresponding forms of DC to charge the power supply vehicle. It can also convert the DC output of the power supply vehicle into three-phase AC or single-phase DC output to the grid or load. A DC regulated power supply converts the output of the energy storage battery into stable DC to provide power to external loads. Solar power generation components are installed on the roof of the power supply vehicle, converting solar energy into electrical energy to continuously replenish the energy storage battery.

[0026] This invention employs a high-rate lithium iron phosphate energy storage battery as the energy storage component of the power supply vehicle, and a power distribution system (PCS) as the charging and discharging device for the energy storage battery. The PCS receives three-phase or single-phase AC input from the mains power grid or solar power generation modules. The PCS converts the three-phase or single-phase AC to DC to charge the energy storage battery, and can also convert the DC from the energy storage battery to three-phase or single-phase AC to supply load devices or feed back to the mains power grid. The solar power generation module converts solar energy into AC power, supplying it to the AC bus and the input terminal of the PCS. A DC regulated power supply converts the AC at the PCS input terminal to 28V low-voltage DC, outputting it to an external low-voltage DC load. The load devices obtain power from the AC bus or the output terminal of the DC regulated power supply.

[0027] This utility model utilizes a high-rate lithium iron phosphate battery, assembled in a 240S1P configuration. It has a rated voltage of 768V, a rated capacity of 142Ah, a rated energy storage capacity of 109kWh, and a rated discharge power of 100kW. Heating is achieved using a resistance heating film with a maximum heating rate of 5℃ / min. Forced air cooling is employed, allowing the battery to operate within a temperature range of -40℃ to +60℃. The battery consists of 12 battery boxes and one high-voltage box. Each battery box has a miniature manual maintenance switch, two output connectors, one communication connector, and one heating connector. Heating power is directly drawn from the battery's output bus. When the battery temperature is below 0℃, heating automatically begins; when the battery temperature is above +40℃, forced air cooling is automatically activated. The battery box uses lightweight aluminum alloy as its structural material. To improve the battery's continuous operation in low-temperature environments, this design employs a double-layer shell for insulation. The battery box shell is assembled from two layers of thin aluminum alloy plates welded together, with air, which has a low thermal conductivity, sandwiched between them. This achieves excellent insulation and heat resistance in low-temperature environments. Tests have shown that the battery box can maintain good insulation for 24 hours in environments of -40℃ and +60℃. The battery pack uses low-internal-resistance cells, achieving a charge / discharge efficiency of over 95% under rated conditions, with actual energy release reaching 100% of the rated energy.

[0028] This invention utilizes a dedicated three-phase PCS for energy storage, with a maximum output power of 105kW. Rectification and inversion are achieved through a three-phase three-level converter. The rectified output, converted from three-phase AC to DC, is then injected into the energy storage battery. The PCS employed in this invention features zero power in standby mode, a charge / discharge conversion time ≤100ms, and a maximum conversion efficiency of 98.5%. It is compatible with three-phase three-wire and three-phase four-wire systems, and a customized communication bus allows for monitoring of all module data. It supports pure grid-connected, pure off-grid, and grid-connected / off-grid switching operating modes, as well as high / low voltage load switching, islanding, and black start. In off-grid mode, it supports 100% three-phase unbalanced load carrying, and supports power compensation, harmonic mitigation, and three-phase unbalanced compensation. This invention's PCS is easy to maintain, safe, and stable. It supports hot-swapping of PCS modules, has rapid maintenance capabilities, comprehensive fault protection, low battery circulating current, and automatic current sharing for multiple parallel units. It supports stable operation in a grid environment with a THDu of 20%. The DC side input and output voltage range of the PCS is 615V~950Vdc, and the AC side input and output voltage range is 230Vac or 400Vac. Its power factor can be adjusted within the range of 1 (leading) to 1 (lagging), and the current distortion rate is ≤2%.

[0029] The DC regulated power supply in this invention adopts a 380Vac input and a 28Vdc output, with a maximum output power of 5kW, output ripple ≤1%, and adjustable output voltage. The solar power generation module in this invention can output a maximum of 2kW of stable 230V single-phase AC power when sunlight intensity is sufficient, supplying it to the AC bus. This single-phase AC power can charge the energy storage battery via the PCS, power the DC regulated power supply, or power a single-phase electrical load.

[0030] 3D model of towed energy storage power supply support vehicle as follows Figure 3 As shown. The equipment compartment of the support vehicle is painted yellow. Doors open on both sides of the compartment, allowing for easy disassembly and replacement of internal equipment. Ventilation vents are located at the front and rear of the compartment; the front has an air inlet equipped with a suction fan, and the rear has an air outlet equipped with an exhaust fan. When the temperature inside the compartment is high, the vehicle automatically activates the fans for ventilation and cooling. Four outriggers are installed around the support vehicle; these are lowered when the vehicle is parked to ensure stable parking. A tow arm is located at the front of the support vehicle, equipped with small, steerable tires. In certain situations, the vehicle can be manually adjusted for orientation and short-distance positioning. For long-distance movement, it can be towed by an off-road vehicle, a passenger car, or livestock.

[0031] As can be seen from the above solutions, the towed energy storage power supply vehicle involved in this utility model effectively solves various problems of traditional diesel generator set power supply vehicles in system testing and operational scenarios. Through battery energy storage and supplementary power from the mains and solar energy, it achieves reliable power supply in application scenarios, with no vibration, no noise, and no toxic or harmful emissions, achieving silent operation (both sound and infrared). When necessary, this power supply vehicle can also feed energy back to the grid, playing a role in peak shaving and valley filling. The towed energy storage power supply vehicle involved in this utility model has already been applied in multiple projects, has significant application value, and will generate good economic benefits.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A towed energy storage power supply support vehicle, characterized in that, The system includes an energy storage battery, a power conversion system (PCS), a DC regulated power supply, solar power generation modules, a trailer, and a container. The trailer serves as a platform for the container, energy storage battery, PCS, DC regulated power supply, and solar power generation modules. The container has multiple racks inside, with the energy storage battery, PCS, and DC regulated power supply placed on these racks, and the solar power generation modules placed on top of the container. The solar power generation modules provide three-phase or single-phase AC input to the PCS, which converts the three-phase or single-phase AC to DC to charge the energy storage battery and converts the DC from the energy storage battery back to three-phase or single-phase AC. The solar power generation modules convert solar energy into AC to supply the PCS input, and the DC regulated power supply converts the AC input to 28V DC.

2. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The energy storage batteries are grouped in a 240S1P configuration and heated using a resistance heating film. The energy storage battery consists of 12 battery boxes and 1 high-voltage box. Each battery box has a micro switch, two output connectors, one communication connector, and one heating connector. When the temperature of the energy storage battery is below 0℃, the energy storage battery starts to heat up. The battery box shell is made of double-layer aluminum alloy plates welded together, with air in the interlayer.

3. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The PCS adopts a three-phase PCS for energy storage. Through a three-phase three-level converter, it realizes rectification and inversion. The rectified output is converted from three-phase AC power to DC power and then injected into the energy storage battery.

4. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The DC regulated power supply uses 380Vac input, 28Vdc output, and has a maximum output power of 5kW.

5. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The solar power generation module can output 2kW of 230V single-phase AC power.

6. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The support vehicle has four outriggers around its bottom and a towing arm at the front, with steerable tires mounted on the towing arm.

7. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, There is a toolbox at the front of the trailer for storing tools and cables.

8. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The trailer is equipped with a spring suspension system, two rubber tires, and a hook.

9. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The modular cabin is equipped with ventilation fans around its perimeter to provide ventilation and cooling for the equipment inside.

10. The towed energy storage power supply support vehicle as described in claim 1, characterized in that, The energy storage battery is a lithium iron phosphate energy storage battery.

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