CN216086257U - Power supply system of off-grid mobile refrigerator - Google Patents

Power supply system of off-grid mobile refrigerator Download PDF

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Publication number
CN216086257U
CN216086257U CN202122403293.6U CN202122403293U CN216086257U CN 216086257 U CN216086257 U CN 216086257U CN 202122403293 U CN202122403293 U CN 202122403293U CN 216086257 U CN216086257 U CN 216086257U
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China
Prior art keywords
inverters
power supply
storage battery
photovoltaic
battery pack
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CN202122403293.6U
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李锋
庄晓军
冉贵友
刘法开
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Hainan Helitian Energy Development Co ltd
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Hainan Helitian Energy Development Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/242—Home appliances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/248—UPS systems or standby or emergency generators

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  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses a power supply system of an off-grid mobile refrigerator, which comprises a storage battery pack, a photovoltaic power generation assembly, a backup generator set, 2 inverters and a refrigerator load, wherein a charge-discharge interface of the storage battery pack is connected with battery interfaces of the 2 inverters through electric wires, and a communication interface of the storage battery pack is respectively connected with the communication interfaces of the 2 inverters through a communication line and a communication line collector so as to realize parallel operation of the storage battery pack and the inverters; the photovoltaic power generation assembly is connected with the photovoltaic input interfaces of the 2 inverters through wires; the backup generator set is connected with the alternating current input interfaces of the 2 inverters through electric wires; the load of the refrigerated cabinet is connected with the alternating current output interfaces of the 2 inverters through electric wires; and 2 inverters are connected with the current equalizing line through a communication line to realize parallel power supply. The utility model provides a continuous and reliable power supply for a field cold chain system without accessing commercial power, and solves the problem of the field cold chain power supply.

Description

Power supply system of off-grid mobile refrigerator
Technical Field
The utility model relates to the technical field of cold chain transportation power supply, in particular to an off-grid mobile refrigerator power supply system.
Background
The method has the advantages that the decisive effect of market allocation resources is fully exerted, the novel agricultural operation main body is supported to build the storage and preservation cold chain facility, the supply is tightly protected, the loss is reduced, the cost is reduced, the industry is strong, the people are benefited, the production place of the fresh agricultural products is focused on the 'first kilometer', the main production area of the fresh agricultural products, the special agricultural product advantageous area and the poor area are taken as key points, the principle of 'agriculture, agriculture and enjoy' is adhered to, the agricultural product loss and the logistics cost are further reduced by means of the construction of the storage and preservation cold chain facility of the agricultural products of family farms and farmer cooperative societies, the quality improvement and the agricultural green development are promoted, the income increase of farmers and the pleasure of villages are promoted, the poverty elimination and attack are continuously consolidated, and the consumption demands of urban and rural residents on the high-quality agricultural products are better satisfied.
Therefore, research and development on a photovoltaic and energy-saving mobile refrigerator are developed, for example, a utility model with an authorization publication number of CN211830282U discloses a refrigerator car power supply control system based on photovoltaic energy storage, which comprises an energy storage battery pack, a battery management device, a charging interface component and a vehicle-mounted electric appliance; the energy storage battery pack at least comprises two groups of batteries; the energy storage battery pack is connected with the charging interface assembly through a charging circuit; the energy storage battery pack is connected with the vehicle-mounted electrical appliance through a discharge circuit; the battery management device is connected with the energy storage battery pack through a control line to control the charging or discharging of each battery. The utility model provides a refrigerator car power supply control system based on photovoltaic energy storage, which can effectively manage energy of a refrigerator car and improve the stability of a power system of the refrigerator car. However, the above scheme is to charge the energy storage battery pack by mains supply, and the energy storage battery pack is not off-grid, and cannot be used in remote areas without mains supply, and the situation that refrigeration cannot be performed due to insufficient power supply possibly exists in the moving process, so that the problem of cold chain without mains supply cannot be solved.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an off-grid mobile refrigerator power supply system, which provides a continuous and reliable power supply for a field cold chain and solves the problem of the field cold chain power supply.
In order to solve the technical problem, the utility model discloses a power supply system of an off-grid mobile refrigerator, which comprises a storage battery pack, a photovoltaic power generation assembly, a backup generator set, 2 inverters and a refrigerator load,
the charge-discharge interface of the storage battery pack is connected with the battery interfaces of the 2 inverters through electric wires, and the communication interface of the storage battery pack is respectively connected with the communication interfaces of the 2 inverters through a communication line and a communication line collector so as to realize parallel operation of the storage battery pack and the inverters; the photovoltaic power generation assembly is connected with the photovoltaic input interfaces of the 2 inverters through wires; the backup generator set is connected with the alternating current input interfaces of the 2 inverters through electric wires; the load of the refrigerated cabinet is connected with the alternating current output interfaces of the 2 inverters through electric wires; the 2 inverters are connected with the current-sharing line through a communication line to achieve parallel power supply, wherein the communication line achieves parallel operation, and the current-sharing line achieves balanced load output of the two inverters.
Preferably, the system further comprises a cloud server and a monitoring client, wherein the cloud server and the monitoring client are respectively connected with the 2 inverters.
Preferably, the backup generator set is a gasoline engine generator.
Preferably, the gasoline generator control loop is connected with 2 inverter dry contacts through a relay power supply side to realize the automatic start-stop control of the gasoline generator.
Preferably, the inverter is a single-phase off-grid photovoltaic inverter.
Preferably, the fridge load is connected with the off-grid photovoltaic inverter alternating current side through a power distribution system.
Preferably, the battery panel of the photovoltaic power generation assembly is paved on the top and two side wings of the refrigerator, the storage battery pack, the backup generator set and the 2 inverters are all installed on the back of the refrigerator, and the load of the refrigerator comprises a hydraulic machine, an air conditioner and an illuminating lamp.
Compared with the prior art, the utility model has the following advantages:
1. the utility model can realize the movement of the cold chain of the container without accessing commercial power and fossil energy, provide continuous and reliable pure green electric energy for a field cold chain system, solve the problem of field cold chain power supply, solve the last difficulty of providing a 'first kilometer' fresh-keeping cold chain system in the center, and comprehensively popularize the application of the field cold chain and energy-saving emission-reducing driving-protecting protection.
2. Two single-phase off-grid inverters are adopted to realize a parallel power supply mode through a communication line and a current equalizing (voltage equalizing) line; the energy storage battery is a lithium battery, and is connected with the inverter through an RS485 communication line and a communication line collector, so that parallel operation of the storage battery and the inverter is realized; the inverter is provided with a photovoltaic priority mode, so that the maximum energy conservation and emission reduction is realized; the gasoline generator is controlled by starting and stopping automatically to protect the storage battery pack and ensure that equipment can still work normally in continuous rainy days.
3. The distributed photovoltaic power station can enable the photovoltaic cell assembly to be perfectly combined with a building, can generate electricity and can be used as a building material and a decorative material, so that the material resources are fully utilized to play multiple functions, the construction cost is favorably reduced, and the high-tech 'bright spot' of the building is improved; distributed power generation belongs to near load power supply, so that the loss in the electric energy transmission process is reduced, the emission of CO2 can be effectively reduced, the environmental pollution is reduced, cleaner and efficient green energy is provided for the society, and low-carbon economy is realized; compared with a centralized power station, the distributed photovoltaic power generation has obvious advantages in aspects of position selection, electric energy transmission and planning, data monitoring and the like, and is widely applied.
Drawings
FIG. 1 is a block diagram of an off-grid mobile chiller power supply system according to the present invention;
FIG. 2 is a schematic diagram of the electrical system summary of an off-grid mobile chiller power supply system of the present invention;
FIG. 3 is an expanded schematic diagram of the electrical system of an off-grid mobile chiller power supply system of the present invention;
FIG. 4 is a wiring diagram of 2 inverters in an off-grid mobile chiller power supply system according to the present invention;
fig. 5 shows the open/close state of the dry contact of the inverter.
Detailed Description
In order that the objects and advantages of the utility model will be more clearly understood, the following detailed description of the utility model is given in conjunction with the accompanying drawings and examples.
As shown in fig. 1, the utility model discloses a power supply system for an off-grid mobile refrigerator, which comprises a storage battery pack, a photovoltaic power generation assembly, a backup generator set, 2 inverters and a refrigerator load. The solar panel of the photovoltaic power generation assembly on the two side wings can be electrically controlled to realize unfolding or folding; the storage battery pack, the backup generator set and the 2 inverters are all arranged on the back of the refrigerating box; the load of the refrigerator comprises a hydraulic press, an air conditioner and a lighting lamp.
As shown in fig. 2 and 3, the charge-discharge interface of the storage battery pack is connected to the battery interfaces of the 2 inverters through wires, and the communication interface of the storage battery pack is connected to the communication interfaces of the 2 inverters through an RS485 communication line and a communication line concentrator (Hub), so as to implement parallel operation of the storage battery pack and the inverters. And the photovoltaic power generation assemblies are connected with the photovoltaic input interfaces of the 2 inverters through electric wires. The backup generator set is a gasoline generator and is connected with the alternating current input interfaces of the 2 inverters through electric wires. The load of the refrigerated cabinet is connected with the alternating current output interfaces of the 2 inverters through electric wires. The 2 inverters are connected with the current-sharing line through a communication line to achieve parallel power supply, wherein the communication line achieves parallel operation, and the current-sharing line achieves balanced load output of the two inverters. In the present system, the inverter sets a photovoltaic priority mode: the photovoltaic power is preferentially supplied to the load of the refrigerating box, and when the photovoltaic power is insufficient, the photovoltaic power and the storage battery pack supply power to the load of the refrigerating box together; when the photovoltaic is dead and the capacity of the storage battery pack is reduced to a low-capacity alarm value (40%), the gasoline generator is automatically started to supply power to the load of the refrigerating box. In addition, when the gasoline engine is automatically started to supply power to the load of the refrigerating box, the storage battery pack is charged, when the charging capacity of the storage battery pack reaches 90%, the gasoline engine is automatically stopped, and the inverter automatically switches back to the storage battery pack to supply power. When the capacity of the storage battery pack is lower than 20%, the inverter is automatically shut down so as to protect the storage battery pack.
The gasoline engine generator is controlled by starting and stopping the gasoline engine generator, which is mainly realized by a dry contact port of an inverter and an additional relay, and the open and close states of the dry contact of the inverter are shown in figure 5:
as a preferred embodiment, the utility model further comprises a cloud server and a monitoring client, wherein the cloud server and the monitoring client are respectively connected with the 2 inverters. Communication of inverters
As a preferred embodiment, the gasoline engine generator control loop is electrically connected with 2 inverter main contacts through relays, wherein the power supply side of the relays is connected with the inverter main contacts, so as to realize the automatic start-stop control of the gasoline engine generator.
The inverter is an off-grid photovoltaic inverter, the output conditions of the storage battery and the solar battery are monitored in real time, the surrounding environment is accurately judged, and corresponding actions such as switching control of a load, starting, running, dormancy, stopping and fault state detection of a system are finished, so that safe and reliable work of the system is ensured. Output efficiency of the off-grid photovoltaic inverter: when the high-power inverter is fully loaded, the efficiency must be more than 95%; at 50W/m2Under the sunshine intensity, the power can be supplied to the load; when the input power of the inverter is 10% of rated power, the conversion efficiency of more than 90% is also ensured. Output waveform of off-grid photovoltaic inverter: in order to invert the dc generated by the photovoltaic array to supply power to the load, it is necessary that the output voltage wave of the inverter beThe shape, the amplitude and the phase are consistent with those of a public power grid, and undisturbed smooth load power supply is realized. Range of input dc voltage of off-grid photovoltaic inverter: the direct current input voltage is required to have a wider application range, and the terminal voltage of the solar cell has a larger variation range along with the load and the sunlight intensity, so that the inverter is required to normally work in the larger direct current input voltage range, and the stability of the alternating current output voltage is ensured. In addition, the off-grid photovoltaic inverter has the capability of island protection, and when the load is interrupted in power supply due to external reasons such as electrical faults, misoperation or natural factors, the electric equipment is prevented from being damaged, and the safety of load maintenance personnel is ensured. The off-grid photovoltaic inverter disclosed by the utility model is an inverter with the capacity of SPF 5000TL of a Gurewatt grid-connected and off-grid integrated machine being 5000Wp, and also has a communication interface and a monitoring function.
The load of the refrigerating box is connected with the off-grid photovoltaic inverter through a power distribution system, and the power distribution system is a switch box with the functions of leakage protection and load power distribution.
The solar panel of the photovoltaic power generation assembly adopts a crystalline silicon solar cell, a single-crystal single-glass high-power 550Wp half-panel assembly with higher photoelectric conversion efficiency is selected, the roof of the solar panel is in a distributed structure, the distributed photovoltaic adopts a fully-distributed principle, and the assembly is designed in a tiled mode (or a small roof inclination angle) so as to meet the heat insulation function of a roof layer. The illumination irradiates the photovoltaic module, through sunlight illumination, one part of the photovoltaic module absorbs solar energy and converts the solar energy into electric energy, and the other part of the sunlight is reflected by the photovoltaic module, so that the top of the container is subjected to heat insulation and cooling. In addition, the indoor temperature of the container can be effectively reduced by 2-4 ℃ after the solar panel of the photovoltaic power generation assembly is built, and the energy consumption of the air conditioner can be saved by 30-40%. And moreover, after the container is built in a photovoltaic power station, the aging and corrosion of the paint surface caused by solar radiation can be slowed down due to the laying of the photovoltaic panels, and the problems of desoldering, cracking, water leakage and the like are avoided.
Application example: the project of villages and towns around Fuzhou city in Fujian province adopts net dot type installation, each net dot is composed of 1 steel structure containers with the same size and specification, the external size of each box body is 6058 multiplied by 2438 multiplied by 2590mm, the top area of each cabinet is 6058 multiplied by 2438 multiplied by 14.769m2Wingspan surfaceProduct 6058 in book
2590＝15.69m2. Energy consumption analysis of the network points: each network point mainly uses 3 variable frequency refrigerators in the daytime, the rated output power is 2.32kW, and the energy consumption in 24 hours is about 25-37 kWh; wherein the ratio of the day time 07: 30-18: 30 energy consumption is about 15-22 kWh, 18 in evening: 30-07: 30 energy consumption is about 10-15 kWh. A10 KWp distributed photovoltaic power station (photovoltaic power generation assembly), 24kWh energy storage battery packs and 1 gasoline generating set above 3kW need to be configured.
The above-described embodiments are only specific examples for further explaining the object, technical solution and advantageous effects of the present invention in detail, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement and the like made within the scope of the disclosure of the present invention are included in the protection scope of the present invention.

Claims (7)

1. Portable refrigerator power supply system leaves net, its characterized in that: comprises a storage battery pack, a photovoltaic power generation assembly, a backup generator set, 2 inverters and a refrigerating box load,
the charge-discharge interface of the storage battery pack is connected with the battery interfaces of the 2 inverters through electric wires, and the communication interface of the storage battery pack is respectively connected with the communication interfaces of the 2 inverters through a communication line and a communication line collector so as to realize parallel operation of the storage battery pack and the inverters; the photovoltaic power generation assembly is connected with the photovoltaic input interfaces of the 2 inverters through wires; the backup generator set is connected with the alternating current input interfaces of the 2 inverters through electric wires; the load of the refrigerated cabinet is connected with the alternating current output interfaces of the 2 inverters through electric wires; the 2 inverters are connected with the current-sharing line through a communication line to achieve parallel power supply, wherein the communication line achieves parallel operation, and the current-sharing line achieves balanced load output of the two inverters.
2. The off-grid mobile chiller power supply system of claim 1, wherein: the system further comprises a cloud server and a monitoring client, wherein the cloud server and the monitoring client are respectively connected with the 2 inverters.
3. The off-grid mobile chiller power supply system of claim 1, wherein: the backup generator set is a gasoline generator.
4. The off-grid mobile chiller power supply system of claim 3, wherein: the control loop of the gasoline generator is connected with the dry contact of 2 inverters through the power supply side of the relay to realize the automatic start-stop control of the gasoline generator.
5. The off-grid mobile chiller power supply system of claim 1, wherein: the inverter is a single-phase off-grid photovoltaic inverter.
6. The off-grid mobile chiller power supply system of claim 5, wherein: the fridge load is connected with the off-grid photovoltaic inverter through a power distribution system.
7. The off-grid mobile chiller power supply system of claim 1, wherein: the solar panel of the photovoltaic power generation assembly is paved on the top and the side wings of the refrigerator, the storage battery set, the backup generator set and the 2 inverters are all installed on the back of the refrigerator, and the load of the refrigerator comprises a hydraulic machine, an air conditioner and an illuminating lamp.
CN202122403293.6U 2021-09-30 2021-09-30 Power supply system of off-grid mobile refrigerator Active CN216086257U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122403293.6U CN216086257U (en) 2021-09-30 2021-09-30 Power supply system of off-grid mobile refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122403293.6U CN216086257U (en) 2021-09-30 2021-09-30 Power supply system of off-grid mobile refrigerator

Publications (1)

Publication Number Publication Date
CN216086257U true CN216086257U (en) 2022-03-18

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Application Number Title Priority Date Filing Date
CN202122403293.6U Active CN216086257U (en) 2021-09-30 2021-09-30 Power supply system of off-grid mobile refrigerator

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GR01 Patent grant