Light storage multifunctional emergency power supply vehicle

Abstract

The invention discloses a light storage multifunctional emergency power supply vehicle, and relates to the technical field of transportation devices. The method comprises the following steps: 1, designing and acting an internal structure of the light-storage multifunctional emergency power supply vehicle; 2, the emergency power supply vehicle is connected into the wind and light energy storage system, the power supply vehicle and wind and light power generation form a local original network nuclear storage system, light energy and wind energy are used for energy storage through a storage battery, grid-connected operation is carried out, and the charging and discharging states are kept in the aspect of operation; 3, after receiving a power protection task, disassembling the emergency power supply vehicle and the energy storage part of the movable part from the photovoltaic power generation system, transporting to a power protection site, and connecting the commercial power and a load needing power protection to carry out the power protection task; the system is high in adaptability, can meet the power requirements of various emergency occasions, and particularly can quickly respond to emergencies or natural disasters.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic energy storage and emergency power supply multifunctional electric power technology, and in particular relates to a photovoltaic energy storage multifunctional emergency power supply vehicle. Background Art

[0002] Emergency power supply vehicles currently all use hot oil to generate electricity, and rechargeable battery types have also appeared in succession. However, no matter which type of emergency power supply vehicle is used, it only plays the role of an emergency power supply. Even for rechargeable emergency power supply vehicles, during the entire use process, the battery of the emergency power supply vehicle is only charged and discharged regularly through the city power to ensure that the battery is on standby in a fully charged state, which wastes resources.

[0003] Emergency power supply vehicles can be used as emergency power sources to provide power to users during emergency power supply tasks, ensuring normal power supply during sudden power outages. However, there are not many places where they are used for emergency power supply tasks. Generally, they are used only about 4 times a year, and the rest of the time they are parked at the unit. If fuel-type and battery-type emergency power supply vehicles are parked for a long time, special personnel will be arranged to start them for operation and charging.

[0004] Furthermore, if the equipment is not started, checked, or charged for a long time, the equipment will experience battery aging and damage, electrical system failure, engine and mechanical parts rust and wear, control system failure, and condensate deposits accumulation in the cooling system. This will not only affect emergency use, but more importantly, cause a waste of resources. In order to overcome this problem, the present invention discloses the implementation of a multi-functional power supply vehicle. Summary of the invention

[0005] The purpose of the present invention is to provide a multifunctional emergency power supply vehicle with photovoltaic storage, which ensures the stability of power supply by adopting a dual power supply mutual investment device, thereby solving the problem of existing rechargeable emergency power supply vehicles, which only charge and discharge the battery of the emergency power supply vehicle through the mains in a timed manner during the entire use process to ensure that the battery is on standby in a fully charged state, thus wasting resources.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a photovoltaic storage multifunctional emergency power supply vehicle, comprising the following steps:

[0008] Step 1: Internal structure design and function of a photovoltaic multifunctional emergency power supply vehicle;

[0009] Step 2: Connect the emergency power supply vehicle to the wind and solar energy storage system. The power supply vehicle and wind and solar power generation will form a local original grid nuclear storage system, using light energy and wind energy to store energy through batteries and connect to the grid, thus maintaining the charging and discharging state in operation;

[0010] Step 3: When receiving the power supply task, the emergency power supply vehicle, that is, the movable part of the energy storage, is disassembled from the photovoltaic power generation system, transported to the power supply site, and connected to the mains and the load that needs power supply to perform the power supply task.

[0011] Furthermore, in the above-mentioned photovoltaic storage multifunctional emergency power supply vehicle, in step 1, the above-mentioned includes 1 photovoltaic component quick interface; it can be 1 to 10 groups, connected to the photovoltaic components; the energy storage battery is charged through the energy storage converter 2, the energy storage cabinet 3 is a liquid-cooled energy storage cabinet group installed in the emergency vehicle, a single group is 100kw / 215kWh, and can be placed according to demand and vehicle size (1-10) faces, which are the energy storage part, the above-mentioned 4 AC convergence cabinets, 1-10 faces of the AC energy storage cabinets are connected, the above-mentioned 5 is a step-up transformer to provide users with 660V-10kV AC power supply, and the above-mentioned 6 is a load-side quick interface, that is, an emergency power supply port;

[0012] (1) Capacity of photovoltaic and energy storage multifunctional power supply vehicle

[0013] The liquid-cooled energy storage system has a capacity of 100kW / 215kWh (0.5P). The energy storage cabinet can be freely expanded and matched according to demand. It can support 10 groups of parallel expansion, with a capacity range of 100~1000kW / 215kWh~2150kWh, meeting the needs of energy storage of different scales.

[0014] (2) Composition of the photovoltaic and energy storage multifunctional power supply vehicle

[0015] The liquid-cooled energy storage system integrates 8 core systems, which can provide stable and reliable performance in different application scenarios and environmental conditions.

[0016] Energy storage battery system: stores and releases electricity;

[0017] Battery management system: for battery data collection, status monitoring, and control protection;

[0018] Energy management system: configure power management strategies to monitor, control and flow of power; energy management system strategies include photovoltaic power generation priority charging strategy and city power valley low-price charging strategy; when the management system detects that the photovoltaic power generation power meets the charging requirements of the energy storage module, the system automatically switches to photovoltaic charging mode to achieve the purpose of green power consumption. The system determines the city power price according to the pre-configured peak and valley electricity price time periods, and then implements valley low-price charging according to the established strategy. The management system also connects to PCS, BMS, high-voltage boxes, photovoltaic power generation systems, etc. to complete data interaction and strategy calculation data input, thereby forming the brain decision of the EMS energy management system;

[0019] Fire safety system: The fire safety system uses a variety of detection methods such as temperature detection, smoke detection, and humidity detection to achieve redundant judgment of fire accidents, prevent sensor abnormalities from generating erroneous signals, and provide an effective means for fire safety protection;

[0020] Energy storage converter system: PCS uses transformer modules and inverter modules to achieve bidirectional conversion functions from AC to DC and DC to AC. As an executive power unit, it is completely controlled by the EMS system and implements bidirectional current conversion between the battery DC side and the grid AC side according to the requirements of the energy management system;

[0021] Temperature control system: The temperature control system and the BMS system interact with each other in both directions to collect temperature signals at the cell level, PACK level, and cluster level. At the same time, multiple temperature collection modules are installed at key parts of the battery compartment, and a big data clustering algorithm is used to determine the temperature status of the battery. According to the strategy requirements, air conditioning liquid cooling is used to provide efficient temperature control for the battery cells.

[0022] Electrical system: Provide external AC380 power interface for equipment in the cabinet to realize grid-connected operation of photovoltaic power generation and city power; provide DC power supply and load conversion for battery compartment; data collection and control of controlled EMS system;

[0023] Dynamic environment system: To ensure the safe operation of the energy storage unit, and to ensure that the energy storage unit operates in the optimal range as much as possible to achieve the highest charging and discharging efficiency. The system completes the detection of temperature, humidity and water immersion information in the cabinet, and performs dynamic optimization through the EMS system;

[0024] (3) Advantages of photovoltaic multifunctional power supply vehicle

[0025] It uses lithium iron phosphate batteries with high safety, high energy density and long cycle life, which can adapt to various scenarios of 0.5P rate;

[0026] Adopting efficient liquid cooling solution, effectively optimizing the temperature difference between batteries, improving battery cycle life, and achieving better cost performance;

[0027] The dual protection strategy of cluster-level fire protection and PACK-level fire protection is adopted. The emergency power supply vehicle is equipped with fire-sensing sensors on the PACK and cluster. When a fire accident occurs on any PACK, the fire protection system can sense it in time, reduce the spread of battery cell failure, and prevent the fire accident from spreading to other clusters. The fire protection system can timely and effectively detect, alarm and extinguish fires in the early stage, firmly guarding the lifeline of product safety;

[0028] With modular and standardized design, a single outdoor cabinet occupies a small area, is easy to transport and install, has high adaptability on the installation site, and is easy to expand. Each group can expand 1 to 10 units (215kWh to 2150kWh), and can also be configured according to demand;

[0029] Adopting the AC side parallel solution fundamentally eliminates the circulation between battery clusters and further improves the battery life;

[0030] It adopts intelligent design ideas, is integrated into the photovoltaic storage system, and has cloud-based remote operation and maintenance functions. The emergency power supply vehicle is equipped with an energy management system to complete the data collection of each battery cell in the battery compartment, including voltage, current, internal resistance, temperature and other signals, and completes the data push function to the cloud. In the big data cloud platform center, through a large number of emergency power supply vehicle operating condition analysis, analogy, clustering algorithm, optimization, etc., more reasonable battery management strategies are continuously recommended, and the use of neuron algorithms can infer the impact of operating conditions on battery SOC and SOH, and continuously iterate control strategies to keep the system running in the best condition at all times, reducing the loss of battery performance and life;

[0031] 24 / 7 real-time cloud monitoring, early warning of safety warnings, and timely and effective protection when failures occur;

[0032] The energy storage cabinet of the photovoltaic multifunctional emergency power supply vehicle has multiple protection functions such as "anti-corrosion, fireproof, waterproof, dustproof, shockproof, and UV protection". It has high structural strength and space utilization, and can provide favorable protection for the stable operation of the energy storage battery system.

[0033] (4) Internal layout

[0034] In order to improve system safety, reduce the probability of equipment misoperation, reduce fire safety risks, save operating costs, and achieve long-term stable operation of energy storage cabinets, energy storage cabinets are divided into equipment compartments and battery compartments, and each compartment is isolated by thermal insulation and flame retardant materials. The internal functional partition types of energy storage systems are introduced in Table 10;

[0035] The equipment compartment integrates the electrical system, PCS, EMS, fire protection system, etc., and the battery compartment mainly integrates the battery system. The equipment compartment and battery compartment have three functional zoning types: "temperature control, fire safety, and functional operation".

[0036] In the emergency power supply vehicle with a customized 100kW-215kWh standard cabinet, the battery capacity is 1075kWh; valley electricity is 0.3 yuan, and peak electricity is 1.3 yuan. Using photovoltaic charging with a power of 200kW, two charges and two discharges per day, the charging efficiency is 85%; the photovoltaic green electricity benefit is 1075*0.85*1.3=1187 yuan; valley electricity and peak electricity use is 1075*0.85*1=913 yuan; the total income is 2100 yuan / day;

[0037] In the simulated accident drill, the emergency power supply vehicle served as an emergency power supply, continuously supplying power to the load with a total power of 300kW for more than 3 hours. The output power quality of the emergency power supply vehicle met the requirements, the power supply was continuous and stable, and the emergency application of the system's key loads was successfully completed, ensuring the safety emergency needs.

[0038] Furthermore, in the described photovoltaic storage multifunctional emergency power supply vehicle, in step one, the emergency power supply vehicle described in the present invention includes a tractor and an emergency power supply arranged on the tractor; the emergency power supply adopts a movable box design, which is convenient for rapid deployment and transfer; the box is provided with an AC power input interface and an AC power output interface, as well as an access entrance for photovoltaic components to meet the power requirements of different scenarios; power supply system: a photovoltaic and city power dual power automatic mutual investment device is provided inside the box, and when it is detected that the photovoltaic side power generation meets the charging requirements, photovoltaic power generation is used for charging first; when the dual power automatic mutual investment device detects that the photovoltaic power generation cannot meet the emergency power charging requirements, it automatically switches to the city power (valley power low price) charging mode to ensure the stability and reliability of the power supply (the principle is as follows Figure 2 ); the AC power supply and photovoltaic input interface are directly connected to the AC power supply output interface through a switch circuit of the mutual investment device on the one hand, and connected to the rectifier to charge the battery on the other hand. The battery end is connected to the inverter, and the inverter inputs the battery output current into the inverter, and through a rectifier, the DC power is converted into phased AC power. The inverter uses high-frequency PWM technology (pulse width modulation technology) to convert the phased AC power in the circuit into a sine wave of a certain frequency, making it close to the AC power of the city power supply; finally, the inverter connects the inverted AC power to another switch circuit of the mutual investment device, and then connects it to the AC output interface through the switch circuit.

[0039] Furthermore, in the described photovoltaic and storage multifunctional emergency power supply vehicle, in step 2, the emergency power supply vehicle is connected to the wind and photovoltaic energy storage system. The power supply vehicle and the wind and photovoltaic power generation form a local original grid nuclear storage system, using light energy and wind energy to store energy through batteries, and performing grid-connected operation, thereby maintaining a charging and discharging state during operation.

[0040] Furthermore, in the aforementioned photovoltaic and energy storage multifunctional emergency power supply vehicle, in step three, upon receiving the power supply protection task, the emergency power supply vehicle is instructed to change from the static energy storage unit mode to the emergency power supply mode. When the emergency power supply vehicle detects the change in operation mode, it automatically disconnects the photovoltaic and city power 380 busbars to complete the off-grid operation of the emergency power supply vehicle; that is, the movable energy storage part is disassembled from the photovoltaic power generation system, transported to the power supply protection site, and connected to the city power and the loads that need power supply protection to perform the power supply protection task;

[0041] The purpose of convenient mobility is achieved by connecting liquid-cooled energy storage cabinets in parallel and sealing them in containers; access to the solar charging system, the valley charging system and the emergency power supply load side is achieved through a quick interface; rapid connection and transportation are achieved, and resources are fully utilized; the independent power supply vehicle also needs to be charged and discharged regularly during the standby period to achieve normal maintenance of the battery; the strategies for normal charging and discharging maintenance include photovoltaic surplus power priority strategy, peak elimination and valley filling strategy, etc.; when the dual power automatic switching device detects that the photovoltaic power generation power meets the charging requirements, it automatically switches to photovoltaic charging; when it is detected that the photovoltaic power generation power does not meet the charging strategy requirements, at the same time, according to the configured peak and valley electricity price strategy, low-price charging is performed according to the set charging time period; green energy charging is achieved by connecting to the solar power generation system, and valley electricity low-price charging is achieved according to the peak and valley strategy, which better realizes the value of energy storage; in addition, it is unloaded from the photovoltaic power generation system, towed to the power supply site, and used as a temporary emergency power supply; the present invention solves the maintenance problem of the emergency power supply vehicle during parking, acts as an energy storage part, and achieves resource reuse; and ensures the power state of the emergency energy storage.

[0042] The present invention has the following beneficial effects:

[0043] 1. The present invention has strong adaptability: it can meet the power needs of various emergency situations, especially can respond quickly when emergencies or natural disasters occur.

[0044] 2. The present invention has various functions: it integrates multiple functions such as AC power input and output, battery charging, inverter power supply, photovoltaic energy storage, etc.

[0045] 3. The invention has reliable performance: a dual power supply mutual investment device is used to ensure the stability of power supply.

[0046] 4. The present invention is easy to maintain: the structure is reasonably designed and is convenient for daily maintenance.

[0047] 5. The present invention is easy to move: it adopts a movable box design, which is convenient for rapid deployment and transfer.

[0048] 6. The present invention reduces waste of resources: it is used as an energy storage part under normal circumstances and as an emergency power supply during emergency rescue.

[0049] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0051] Figure 1 It is a schematic diagram of the process of a photovoltaic storage multifunctional emergency power supply vehicle of the present invention;

[0052] Figure 2 This is a schematic diagram of a photovoltaic multifunctional emergency power supply vehicle of the present invention;

[0053] Figure 3 This is a structural diagram of a dual power automatic mutual switching device for a multifunctional emergency power supply vehicle of a photovoltaic storage system according to the present invention;

[0054] Figure 4 This is a schematic diagram of a power flow chart of a photovoltaic multifunctional emergency power supply vehicle of the present invention;

[0055] Figure 5 This is a flow chart of an EMS management system for a photovoltaic storage multifunctional emergency power supply vehicle of the present invention;

[0056] Figure 6 This is a schematic diagram of the process of a fire detection system for a multifunctional emergency power supply vehicle with light storage according to the present invention;

[0057] Figure 7 This is a circuit diagram of a photovoltaic multifunctional emergency power supply vehicle of the present invention;

[0058] Figure 8 This is a schematic diagram of a temperature control system for a photovoltaic multifunctional emergency power supply vehicle according to the present invention;

[0059] Fig. 9 This is a flow chart of an EMS system for a photovoltaic storage multifunctional emergency power supply vehicle of the present invention;

[0060] Fig.10 This is an output flow chart of an EMS management system for a photovoltaic and multifunctional emergency power supply vehicle of the present invention. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] See also Figure 1-10 As shown, the present invention is a photovoltaic storage multifunctional emergency power supply vehicle, comprising the following steps:

[0063] Step 1: Internal structure design and function of a photovoltaic multifunctional emergency power supply vehicle;

[0064] Step 2: Connect the emergency power supply vehicle to the wind and solar energy storage system. The power supply vehicle and wind and solar power generation will form a local original grid nuclear storage system, using light energy and wind energy to store energy through batteries and connect to the grid, thus maintaining the charging and discharging state in operation;

[0065] Step 3: When receiving the power supply task, the emergency power supply vehicle, that is, the movable part of the energy storage, is disassembled from the photovoltaic power generation system, transported to the power supply site, and connected to the mains and the load that needs power supply to perform the power supply task.

[0066] A photovoltaic storage multifunctional emergency power supply vehicle, in step 1, comprises 1 photovoltaic component quick interface; it can be 1 to 10 groups, connected to the photovoltaic components; the energy storage battery is charged through the energy storage converter 2, the energy storage cabinet 3 is a liquid-cooled energy storage cabinet group installed in the emergency vehicle, a single group is 100kw / 215kWh, and can be placed according to demand and vehicle size (1-10) faces, which are energy storage parts, 4 AC convergence cabinets, 1-10 faces of AC convergence input of energy storage cabinets, 5 is a step-up transformer to provide users with 660V-10kV AC power supply, 6 is a load-side quick interface, that is, an emergency power supply port;

[0067] (1) Capacity of photovoltaic and energy storage multifunctional power supply vehicle

[0068] The liquid-cooled energy storage system has a capacity of 100kW / 215kWh (0.5P). The energy storage cabinet can be freely expanded and matched according to demand. It can support 10 groups of parallel expansion, with a capacity range of 100~1000kW / 215kWh~2150kWh, meeting the needs of energy storage of different scales.

[0069] (2) Composition of the photovoltaic and energy storage multifunctional power supply vehicle

[0070] The liquid-cooled energy storage system integrates 8 core systems, which can provide stable and reliable performance in different application scenarios and environmental conditions.

[0071] Energy storage battery system: stores and releases electricity;

[0072] Battery management system: for battery data collection, status monitoring, and control protection;

[0073] Energy management system: configure power management strategies to monitor, control and flow of power; energy management system strategies include photovoltaic power generation priority charging strategy and city power valley low-price charging strategy; when the management system detects that the photovoltaic power generation power meets the charging requirements of the energy storage module, the system automatically switches to photovoltaic charging mode to achieve the purpose of green power consumption. The system determines the city power price according to the pre-configured peak and valley electricity price time periods, and then implements valley low-price charging according to the established strategy. The management system also connects to PCS, BMS, high-voltage boxes, photovoltaic power generation systems, etc. to complete data interaction and strategy calculation data input, thereby forming the brain decision of the EMS energy management system;

[0074] Fire safety system: The fire safety system uses a variety of detection methods such as temperature detection, smoke detection, and humidity detection to achieve redundant judgment of fire accidents, prevent sensor abnormalities from generating erroneous signals, and provide an effective means for fire safety protection;

[0075] Energy storage converter system: PCS uses transformer modules and inverter modules to achieve bidirectional conversion functions from AC to DC and DC to AC. As an executive power unit, it is completely controlled by the EMS system and implements bidirectional current conversion between the battery DC side and the grid AC side according to the requirements of the energy management system;

[0076] Temperature control system: The temperature control system and the BMS system interact with each other in both directions to collect temperature signals at the cell level, PACK level, and cluster level. At the same time, multiple temperature collection modules are installed at key parts of the battery compartment, and a big data clustering algorithm is used to determine the temperature status of the battery. According to the strategy requirements, air conditioning liquid cooling is used to provide efficient temperature control for the battery cells.

[0077] Electrical system: Provide external AC380 power interface for equipment in the cabinet to realize grid-connected operation of photovoltaic power generation and city power; provide DC power supply and load conversion for battery compartment; data collection and control of controlled EMS system;

[0078] Dynamic environment system: To ensure the safe operation of the energy storage unit, and to ensure that the energy storage unit operates in the optimal range as much as possible to achieve the highest charging and discharging efficiency. The system completes the detection of temperature, humidity and water immersion information in the cabinet, and performs dynamic optimization through the EMS system;

[0079] (3) Advantages of photovoltaic multifunctional power supply vehicle

[0080] It uses lithium iron phosphate batteries with high safety, high energy density and long cycle life, which can adapt to various scenarios of 0.5P rate;

[0081] Adopting efficient liquid cooling solution, effectively optimizing the temperature difference between batteries, improving battery cycle life, and achieving better cost performance;

[0082] The dual protection strategy of cluster-level fire protection and PACK-level fire protection is adopted. The emergency power supply vehicle is equipped with fire-sensing sensors on the PACK and cluster. When a fire accident occurs on any PACK, the fire protection system can sense it in time, reduce the spread of battery cell failure, and prevent the fire accident from spreading to other clusters. The fire protection system can timely and effectively detect, alarm and extinguish fires in the early stage, firmly guarding the lifeline of product safety;

[0083] With modular and standardized design, a single outdoor cabinet occupies a small area, is easy to transport and install, has high adaptability on the installation site, and is easy to expand. Each group can expand 1 to 10 units (215kWh to 2150kWh), and can also be configured according to demand;

[0084] Adopting the AC side parallel solution fundamentally eliminates the circulation between battery clusters and further improves the battery life;

[0085] It adopts intelligent design ideas, is integrated into the photovoltaic storage system, and has cloud-based remote operation and maintenance functions. The emergency power supply vehicle is equipped with an energy management system to complete the data collection of each battery cell in the battery compartment, including voltage, current, internal resistance, temperature and other signals, and completes the data push function to the cloud. In the big data cloud platform center, through a large number of emergency power supply vehicle operating condition analysis, analogy, clustering algorithm, optimization, etc., more reasonable battery management strategies are continuously recommended, and the use of neuron algorithms can infer the impact of operating conditions on battery SOC and SOH, and continuously iterate control strategies to keep the system running in the best condition at all times, reducing the loss of battery performance and life;

[0086] 24 / 7 real-time cloud monitoring, early warning of safety warnings, and timely and effective protection when failures occur;

[0087] The energy storage cabinet of the photovoltaic multifunctional emergency power supply vehicle has multiple protection functions such as "anti-corrosion, fireproof, waterproof, dustproof, shockproof, and UV protection". It has high structural strength and space utilization, and can provide favorable protection for the stable operation of the energy storage battery system.

[0088] (4) Internal layout

[0089] In order to improve system safety, reduce the probability of equipment misoperation, reduce fire safety risks, save operating costs, and achieve long-term stable operation of energy storage cabinets, energy storage cabinets are divided into equipment compartments and battery compartments, and each compartment is isolated by thermal insulation and flame retardant materials. The internal functional partition types of energy storage systems are introduced in Table 10;

[0090] The equipment compartment integrates the electrical system, PCS, EMS, fire protection system, etc., and the battery compartment mainly integrates the battery system. The equipment compartment and battery compartment have three functional zoning types: "temperature control, fire safety, and functional operation".

[0091] In the emergency power supply vehicle with a customized 100kW-215kWh standard cabinet, the battery capacity is 1075kWh; valley electricity is 0.3 yuan, and peak electricity is 1.3 yuan. Using photovoltaic charging with a power of 200kW, two charges and two discharges per day, the charging efficiency is 85%; the photovoltaic green electricity benefit is 1075*0.85*1.3=1187 yuan; valley electricity and peak electricity use is 1075*0.85*1=913 yuan; the total income is 2100 yuan / day;

[0092] In the simulated accident drill, the emergency power supply vehicle served as an emergency power supply, continuously supplying power to the load with a total power of 300kW for more than 3 hours. The output power quality of the emergency power supply vehicle met the requirements, the power supply was continuous and stable, and the emergency application of the system's key loads was successfully completed, ensuring the safety emergency needs.

[0093] A photovoltaic storage multifunctional emergency power supply vehicle, in step 1, the emergency power supply vehicle of the present invention includes a tractor and an emergency power supply arranged on the tractor; the emergency power supply adopts a movable box design, which is convenient for rapid deployment and transfer; the box is provided with an AC power input interface and an AC power output interface, as well as a photovoltaic component access entrance to meet the power needs of different scenarios; power supply system: a photovoltaic and city power dual power automatic mutual investment device is arranged inside the box, when it is detected that the photovoltaic side power generation meets the charging requirements, photovoltaic power generation is used for charging first; when the dual power automatic mutual investment device detects that the photovoltaic power generation cannot meet the emergency power charging requirements, it automatically switches to the city power (valley power low price) charging mode to ensure the stability and reliability of the power supply (the principle is as follows Figure 2 ); the AC power supply and photovoltaic input interface are directly connected to the AC power supply output interface through a switch circuit of the mutual investment device on the one hand, and connected to the rectifier to charge the battery on the other hand; the battery end is connected to the inverter, the inverter inputs the battery output current into the inverter, and through a rectifier, converts the DC power into phased AC power. The inverter adopts high-frequency PWM technology (pulse width modulation technology) to convert the phased AC power in the circuit into a sine wave of a certain frequency, so that it is close to the AC power of the mains; finally, the inverter connects the inverted AC power to another switch circuit of the mutual investment device, and then connects it to the AC output interface through the switch circuit.

[0094] A photovoltaic and storage multifunctional emergency power supply vehicle. In step 2, the emergency power supply vehicle is connected to the wind and photovoltaic energy storage system. The power supply vehicle and the wind and photovoltaic power generation form a local original grid nuclear storage system, using light energy and wind energy to store energy through batteries, and connecting to the grid for operation, thus maintaining a charging and discharging state during operation.

[0095] A photovoltaic and energy storage multifunctional emergency power supply vehicle. In step three, upon receiving a power supply protection task, the emergency power supply vehicle is instructed to change from a static energy storage unit mode to an emergency power supply mode. When the emergency power supply vehicle detects a change in the operating mode, it automatically disconnects the photovoltaic and city power 380 busbars to complete the off-grid operation of the emergency power supply vehicle; that is, the movable energy storage part is disassembled from the photovoltaic power generation system, transported to the power supply protection site, and connected to the city power and the load that needs power supply protection to perform the power supply protection task;

[0096] The purpose of convenient mobility is achieved by connecting the liquid-cooled energy storage cabinets in parallel and sealing them in containers; the access to the solar charging system, the valley charging system and the emergency power supply load side is achieved through the quick interface. Rapid connection and transportation are achieved, and resources are fully utilized. The independent power supply vehicle also needs to be charged and discharged regularly during the standby period to achieve normal maintenance of the battery. The strategies for normal charging and discharging maintenance include photovoltaic surplus power priority strategy, peak elimination and valley filling strategy, etc.; when the dual power automatic switching device detects that the photovoltaic power generation power meets the charging requirements, it automatically switches to photovoltaic charging; when it is detected that the photovoltaic power generation power does not meet the charging strategy requirements, at the same time, according to the configured peak and valley electricity price strategy, low-price charging is performed according to the set charging time period. Green energy charging is achieved by connecting to the solar power generation system, and valley electricity low-price charging is achieved according to the peak and valley strategy, which better realizes the value of energy storage. In addition, it is unloaded from the photovoltaic power generation system, towed to the power protection site, and used as a temporary emergency power supply. The present invention solves the maintenance problem of the emergency power supply vehicle during parking, acts as an energy storage part, and achieves resource reuse; and ensures the power state of emergency energy storage.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multifunctional emergency power supply vehicle with solar energy storage, characterized in that: The steps include: Step 1: Internal structure design and function of a photovoltaic multifunctional emergency power supply vehicle; Step 2: Connect the emergency power supply vehicle to the wind and solar energy storage system. The power supply vehicle and wind and solar power generation will form a local original grid nuclear storage system, using light energy and wind energy to store energy through batteries and connect to the grid, thus maintaining the charging and discharging state in operation; Step 3: When receiving the power supply task, the emergency power supply vehicle, that is, the movable part of the energy storage, is disassembled from the photovoltaic power generation system, transported to the power supply site, and connected to the mains and the load that needs power supply to perform the power supply task.

2. The photovoltaic multifunctional emergency power supply vehicle according to claim 1 is characterized in that: In step one, the method comprises (1) a photovoltaic component quick interface, which can be 1 to 10 groups, connected to photovoltaic components; charging the energy storage battery through the energy storage converter (2); the energy storage cabinet (3) is a liquid-cooled energy storage cabinet group installed in the emergency vehicle, a single group is 100kw / 215kWh, and can be placed (1-10) faces according to demand and vehicle size, which is the energy storage part; the (4) AC convergence cabinet, the AC of the 1-10 energy storage cabinets is merged, the (5) is a step-up transformer to provide users with 660V-10kV AC power supply, and the (6) is a load-side quick interface, that is, an emergency power supply port.

3. The photovoltaic multifunctional emergency power supply vehicle according to claim 1 is characterized in that: In step one, the emergency power supply vehicle described in the present invention includes a tractor and an emergency power supply arranged on the tractor; the emergency power supply adopts a movable box design, which is convenient for rapid deployment and transfer; the box is provided with an AC power input interface and an AC power output interface, as well as a photovoltaic component access entrance to meet the power requirements of different scenarios; power supply system: a photovoltaic and city power dual power automatic mutual investment device is provided inside the box, and when it is detected that the photovoltaic side power generation meets the charging requirements, photovoltaic power generation is used for charging first; when the dual power automatic mutual investment device detects that the photovoltaic power generation power cannot meet the emergency power charging requirements, it automatically switches to the city power (valley power low price) charging mode to ensure the stability and reliability of the power supply (the principle is shown in Figure 2); on the one hand, the AC power supply and the photovoltaic input interface are directly connected to the AC power output interface through a switch circuit of the mutual investment device, and on the other hand, the rectifier is connected to charge the battery. The battery end is connected to the inverter, and the inverter inputs the battery output current into the inverter, and through a rectifier, converts the DC power into phased AC power. The inverter uses high-frequency PWM technology (pulse width modulation technology) to convert the phased AC power in the circuit into a sine wave of a certain frequency, making it close to the AC power of the mains; finally, the inverter connects the inverted AC power supply to another switching circuit of the mutual investment device, and then connects it to the AC output interface through the switching circuit.

4. The photovoltaic multifunctional emergency power supply vehicle according to claim 1, characterized in that: In step two, the emergency power supply vehicle is connected to the wind and solar energy storage system. The power supply vehicle and the wind and solar power generation form a local original grid nuclear storage system, using light energy and wind energy to store energy through batteries, and connecting to the grid to operate, thus maintaining a charging and discharging state during operation.

5. The photovoltaic multifunctional emergency power supply vehicle according to claim 1 is characterized in that: In step three, after receiving the power supply task, the emergency power supply vehicle is instructed to change from the static energy storage unit mode to the emergency power supply mode. When the emergency power supply vehicle detects the change in operation mode, it automatically disconnects the busbars of the photovoltaic and mains 380, completing the off-grid operation of the emergency power supply vehicle. That is, the movable part of the energy storage is disassembled from the photovoltaic power generation system, transported to the power supply site, connected to the mains and the loads that need power supply to perform the power supply task; By connecting liquid-cooled energy storage cabinets in parallel and sealing them in containers, the purpose of convenient mobility is achieved; through quick interfaces, access to the solar charging system, the off-peak charging system and the emergency power supply load side is achieved. It realizes fast connection and transportation, and makes full use of resources. Independent power supply vehicles also need to be charged and discharged regularly during standby to achieve normal maintenance of the battery. The strategies for normal charging and discharging maintenance include photovoltaic surplus power priority strategy, peak elimination and valley filling strategy, etc.; when the dual power automatic switching device detects that the photovoltaic power generation meets the charging requirements, it automatically switches to photovoltaic charging; when it is detected that the photovoltaic power generation does not meet the charging strategy requirements, it charges at a low price according to the configured peak and valley electricity price strategy according to the set charging time period. Green energy charging is realized by connecting to the solar power generation system, and low-price valley charging is realized according to the peak and valley strategy, which better realizes the value of energy storage. The second is to unload the power from the photovoltaic power generation system, transport it to the power supply site, and use it as a temporary emergency power supply. The invention solves the maintenance problem of the emergency power supply vehicle during parking, acts as an energy storage part, and achieves resource reuse; it ensures the power state of the emergency energy storage.

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