Light storage and charging integrated device
By designing integrated photovoltaic storage and charging devices in remote areas, combining photovoltaic power generation, energy storage and charging systems, the temporary power consumption problem of electric vehicle charging in remote areas has been solved, the utilization rate of distributed photovoltaic power generation systems has been improved, and the construction and Maintenance costs have promoted the development of new energy electric vehicles.
Patent Information
- Application Number
- CN202420591567.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The lack of charging facilities in remote areas has led to the restriction of the popularity of electric vehicles, and large charging stations have a long construction cycle, large area and high cost, and the phenomenon of charging waiting when users are concentrated.
Design an integrated photovoltaic storage and charging device, combining photovoltaic power generation, energy storage system and charging pile system, use solar energy to generate power and store electricity to ensure stable power supply even when there is insufficient light or peak electricity consumption.
Through the integrated optical storage and charging device, the temporary power consumption problem of electric vehicles charging in remote areas has been solved, the utilization rate of distributed photovoltaic power generation systems has been improved, the construction and maintenance costs have been reduced, and the development of new energy electric vehicles has been promoted.
Smart Images
Figure CN222496113U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical fields of photovoltaic power generation, energy storage and charging piles, and specifically to a photovoltaic storage and charging integrated device. Background Art
[0002] With the increasing maturity of photovoltaic technology, the continuous optimization of energy storage systems and the continuous expansion of charging pile networks, the penetration rate of electric vehicles is steadily increasing, contributing significantly to environmentally friendly travel and green transportation. However, the current layout of charging facilities still faces many challenges. At present, charging stations are mainly concentrated in cities and areas with heavy traffic, but in most towns, mountainous areas, and remote areas such as mining areas, the lack of charging facilities has become a major obstacle to the promotion of electric vehicles.
[0003] The inventors of this application discovered during the process of realizing the utility model that these remote areas often have complex geographical environments, and the construction of large-scale charging stations not only takes a long time and occupies a large area, but is also costly. In addition, since the relatively fixed sites of large-scale charging stations, when electric vehicle users arrive in large numbers, the phenomenon of queuing for charging becomes more and more serious, which greatly limits the use of electric vehicles in these areas and also affects people's acceptance of electric vehicles. Summary of the invention
[0004] The purpose of the embodiment of the utility model is to provide a device that can provide an integrated photovoltaic storage and charging device system, which can make full use of local light resources, meet charging needs through photovoltaic power generation, and at the same time combine with the energy storage system to realize the storage and allocation of electric energy, ensuring stable power supply even when there is insufficient light or peak electricity consumption.
[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model discloses an integrated photo-storage-charging device, which includes: a photovoltaic power generation system for converting solar energy into electrical energy; an energy storage system for storing the converted electrical energy; and a charging pile system for charging electrical equipment using the electrical energy generated by the photovoltaic power generation system or the electrical energy stored in the energy storage system.
[0006] Optionally, the energy storage system includes: a battery module for storing the converted electric energy; and a DC distribution cabinet connected to the photovoltaic power generation system, the charging pile system and the battery module, for managing and distributing the electric energy generated by the photovoltaic power generation system or the electric energy stored in the battery module to the charging pile system.
[0007] Optionally, the energy storage system also includes: a photovoltaic storage inverter system, including an energy storage inverter, which is connected to the DC distribution cabinet and is used to convert the electric energy generated by the photovoltaic power generation system or the electric energy stored in the battery module into AC electric energy, and output the AC electric energy to supply power to the load.
[0008] Optionally, the energy storage system further includes: a first DC-DC converter, connected to the battery module and the DC distribution cabinet, for converting the DC power required for charging and discharging the battery module.
[0009] Optionally, the energy storage system also includes: an energy storage battery system for monitoring and controlling the battery module; and an energy management system for monitoring and controlling the energy of the microgrid within the energy storage system.
[0010] Optionally, the energy storage system also includes: a fire protection system for monitoring the fire safety of the integrated photovoltaic storage and charging device.
[0011] Optionally, the photovoltaic power generation system includes: a photovoltaic module installed outside the integrated light-storage-charging device, for converting solar energy into electrical energy; and a photovoltaic junction box connected to the photovoltaic module, for aggregating the electrical energy generated by the photovoltaic module and connecting it to the energy storage system.
[0012] Optionally, the photovoltaic power generation system further includes: a second DC-DC converter, connecting the photovoltaic combiner box and the energy storage system, and used for converting the electric energy aggregated by the photovoltaic combiner box into direct current electric energy required by the energy storage system.
[0013] Optionally, the photovoltaic modules are connected via series-parallel circuits to combine the electrical energy and connect it to the photovoltaic combiner box.
[0014] Optionally, the charging pile system includes: a charging pile, configured with one or more charging pile gun lines, for charging the electrical equipment; and a charging pile intelligent controller, for monitoring and controlling the charging pile.
[0015] Through the above technical solution, the utility model can become an all-in-one photovoltaic storage and charging machine by combining photovoltaic, energy storage and charging pile technologies. At the same time, photovoltaic power generation, energy storage, charging and load power supply are effectively coordinated through the EMS system (Energy Management System) and the BMS system (Battery Management System) to achieve an organic combination of photovoltaic storage and charging. The utility model comprehensively considers the problems of electricity collection and use in remote areas as well as cost-effectiveness, and has the advantages of flexibility, easy installation, small footprint, low installation cost, unified shape, and easy operation. It solves the problems of temporary electricity use and electric vehicle charging in remote areas, improves the utilization rate of distributed photovoltaic power generation systems, promotes the development of new energy electric vehicles, and helps achieve carbon peak and carbon neutrality.
[0016] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. In the accompanying drawings:
[0018] Figure 1 It is a structural block diagram of the integrated light storage and charging device disclosed in the embodiment of the utility model;
[0019] Figure 2 It is a schematic diagram of the working structure of the integrated light storage and charging device disclosed in the embodiment of the utility model;
[0020] Figure 3 It is a schematic diagram of the application wiring scheme of the integrated photovoltaic storage and charging device disclosed in the embodiment of the utility model.
[0021] Reference numerals
[0022] 1 Photovoltaic power generation system 2 Energy storage system 3 Charging pile system
[0023] 4 Transformer 5 Energy storage and conversion integrated container
[0024] 1.1 Photovoltaic panels 1.2 Photovoltaic combiner box 1.3 Second DC-DC converter
[0025] 2.1 Battery module 2.2 DC distribution cabinet 2.3 Energy storage converter
[0026] 2.4 First DC-DC Converter 2.5 BMS System 2.6 EMS System
[0027] 3.1 Charging pile DETAILED DESCRIPTION
[0028] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.
[0029] Figure 1 This is a structural diagram of the integrated photovoltaic storage and charging device disclosed in the embodiment of the utility model. Figure 1 As shown, the photovoltaic storage and charging integrated device includes: a photovoltaic power generation system 1 for converting solar energy into electrical energy; an energy storage system 2 for storing the converted electrical energy; and a charging pile system 3 for charging electrical equipment using the electrical energy generated by the photovoltaic power generation system 1 or the electrical energy stored in the energy storage system 2. Figure 2As shown in the schematic diagram of the working structure of the photovoltaic storage and charging integrated device disclosed in the embodiment of the utility model, the photovoltaic power generation system 1 includes: a photovoltaic module 1.1, installed outside the photovoltaic storage and charging integrated device, used to convert solar energy into electrical energy; and a photovoltaic junction box 1.2, connected to the photovoltaic module 1.1, used to aggregate the electrical energy generated by the photovoltaic module 1.1 and connect it to the energy storage system 2. Furthermore, when building a photovoltaic storage and charging integrated power station under limited land resources, it is possible to use nearby rooftop photovoltaics or parking lot canopy photovoltaics. Optionally, the photovoltaic components 1.1 are connected through series-parallel circuits to converge the electric energy and connect it to the photovoltaic combiner box 1.2, and then connect it to the inside of the photovoltaic storage and charging integrated machine. Furthermore, the photovoltaic power generation system 1 also includes: a second DC-DC converter 1.3, connecting the photovoltaic combiner box 1.2 and the energy storage system 2, and is used to convert the electric energy aggregated by the photovoltaic combiner box 1.2 into the direct current electric energy required by the energy storage system 2, which effectively solves the power generation, discharge, power supply and energy conversion problems of the solar photovoltaic components 1.1 during the transmission process, and ensures the reliability, efficiency and safety of the power generation of the entire system.
[0030] Further, see Figure 2 As shown, the energy storage system 2 has a battery compartment and an equipment compartment. Optionally, the battery system placed in the battery compartment is composed of a battery module 2.1 and a battery cluster with a single battery cell as the smallest unit. In the embodiment of the utility model, the battery module 2.1 is preferably a storage battery, and the battery capacity can be configured according to the actual needs on site. Optionally, a DC distribution cabinet 2.2 can be placed in the equipment compartment, such as Figure 2 As shown, the DC distribution cabinet 2.2 is connected to the second DC-DC converter 1.3 in the photovoltaic power generation system 1, the charging pile system 3 and the battery in the battery compartment, and is used to manage and distribute the electric energy generated by the photovoltaic power generation system 1 or the electric energy stored in the battery to the charging pile system 3.
[0031] Furthermore, a DC-DC converter 2.4 may be placed in the equipment compartment of the energy storage system 2, such as Figure 2 As shown, the battery and the DC power distribution cabinet 2.2 are connected to convert the DC power required for charging and discharging the battery. Optionally, a photovoltaic storage inverter system can also be placed in the equipment compartment of the energy storage system 2. The photovoltaic storage inverter system includes a PCS2.3 (Power Conversion System, energy storage converter), such as Figure 2 As shown, the PCS 2.3 is connected to the DC distribution cabinet 2.2, and is used to convert the DC power converted by the photovoltaic power generation system 1 through the second DC-DC converter 1.3 or the DC power stored in the battery through the first DC-DC converter 2.4 into AC power, and output the AC power to supply power to the load after adjusting the voltage through the transformer 4.
[0032] Furthermore, the energy storage system 2 also includes: a BMS system 2.5 (Battery Management System, energy storage battery system) and an EMS system 2.6 (Energy Management System, energy management system), such as Figure 2 As shown, optionally, the BMS system 2.5 is connected to the battery in the battery compartment, and is connected to the DC power distribution cabinet 2.2 through the first DC-DC converter 2.4. The BMS system 2.5 is used to monitor and control the battery. In the energy storage system 2, the BMS system 2.5 mainly detects, evaluates, protects and balances the batteries in the energy storage system 2, monitors the accumulated processing power of the battery through various data, and protects the battery safety. Figure 2 As shown, optionally, the EMS system 2.6 is connected to the second DC-DC converter 1.3 in the photovoltaic power generation system 1, the first DC-DC converter 2.4 in the energy storage system 2, and the charging pile system 3 through signal lines, and collects data signals from the photovoltaic power generation system 1, the energy storage system 2, and the charging pile system 3, and realizes energy control of the microgrid inside the energy storage system 2 through network monitoring and energy scheduling to ensure the normal operation of the microgrid and the entire system. Furthermore, a fire protection system can also be placed in the equipment compartment of the energy storage system 2 to monitor the fire safety of the integrated photovoltaic storage and charging device.
[0033] Optionally, the embodiment of the utility model preferably packages the second DC-DC converter 1.3 in the photovoltaic power generation system 1 together with the energy storage system 2. Figure 2 In the energy storage and power conversion integrated container 5 shown in .
[0034] Further, see Figure 2 As shown, the charging pile system 3 includes: a charging pile 3.1, which is used to charge the electrical equipment. Optionally, the electrical equipment is preferably an electric car. Optionally, the charging pile 3.1 is equipped with one or more charging pile gun lines, and interacts with the user by scanning code charging, swiping card charging, and mini-programs. Optionally, the charging pile system 3 also includes a charging pile intelligent controller, which has measurement, control and protection functions, such as operation status detection, fault status detection, and linkage control of the charging and discharging process. Optionally, the charging power of the charging pile system 3 is adjustable, and the input and output over-voltage protection, short-circuit protection, over-current protection, leakage protection, grounding detection, over-temperature and other protection functions are complete, and it has an IP54 protection level.
[0035] Figure 3 This is a schematic diagram of the application wiring scheme of the integrated photovoltaic storage and charging device disclosed in the embodiment of the utility model. Figure 3 As shown, the photovoltaic storage and charging integrated machine provided in the embodiment of the utility model is a device used in the photovoltaic power generation system 1 to realize DC / AC power conversion. The photovoltaic storage and charging integrated machine uses photovoltaics outside the device to generate electricity. The power electronic control technology is used inside the machine to coordinate and control the output power of photovoltaics and energy storage batteries, smooth the power fluctuation of photovoltaic batteries, and output AC power that meets the standard requirements to supply power to the load through energy storage conversion technology. Figure 3 As shown, the load includes but is not limited to hospitals, company buildings, power grids, engines, etc. The cloud platform is a monitoring system provided by the embodiment of the utility model, including the BMS system 2.5 and the EMS system 2.6. The cloud platform can monitor the photovoltaic storage and charging integrated device through computers, mobile phones and other devices. Through reasonable layout and optimized design, the photovoltaic storage and charging integrated device system will become a key force in promoting the popularization of electric vehicles in remote areas and contribute to green travel and sustainable development.
[0036] The integrated photovoltaic storage and charging device disclosed in the embodiment of the utility model can be applied to multiple scenarios (such as photovoltaic storage and charging stations, reservoirs, mines, towns, etc.) under the current background of new energy photovoltaic storage and charging. The integrated photovoltaic storage and charging device can directly output direct current or alternating current through DC-DC and DC-AC conversion to power electric vehicles and loads. The integrated photovoltaic storage and charging device has the function of switching between on-grid and off-grid modes, which can not only solve the partial load electricity consumption and electric vehicle charging needs on site in an off-grid state, but also realize the full utilization of photovoltaic power generation and peak-shaving and valley-filling of grid electricity prices in a grid-connected state, and has huge economic benefits. The integrated photovoltaic storage and charging device also has the functions and characteristics of dynamically adjustable working mode, high-power tracking of photovoltaic energy, and fine management of energy storage batteries, and can be widely used in dry off-grid photovoltaic power stations, distributed backup power supplies, energy storage power stations and other occasions.
[0037] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.
[0038] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.
Claims
1. A photovoltaic storage and charging integrated device, characterized in that: The device includes: Photovoltaic power generation system (1), for converting solar energy into electrical energy; an energy storage system (2), for storing the converted electrical energy; and A charging pile system (3) for charging electrical equipment using the electrical energy generated by the photovoltaic power generation system (1) or the electrical energy stored in the energy storage system (2); Wherein, the energy storage system (2) comprises: A battery module (2.1) for storing the converted electrical energy; and A DC power distribution cabinet (2.2) connected to the photovoltaic power generation system (1), the charging pile system (3) and the battery module (2.1), and used for managing and distributing the electric energy generated by the photovoltaic power generation system (1) or the electric energy stored in the battery module (2.1) to the charging pile system (3); The energy storage system (2) further comprises: A photovoltaic power generation system and energy storage inverter system, comprising an energy storage converter (2.3), wherein the energy storage converter (2.3) is connected to the DC power distribution cabinet (2.2) and is used for converting the electric energy generated by the photovoltaic power generation system (1) or the electric energy stored in the battery module (2.1) into AC electric energy, and outputting the AC electric energy to supply power to a load.
2. The integrated photovoltaic storage and charging device according to claim 1, characterized in that: The energy storage system (2) further comprises: A first DC-DC converter (2.4) is connected to the battery module (2.1) and the DC power distribution cabinet (2.2) and is used for converting the DC power energy required for charging and discharging the battery module (2.1).
3. The integrated photovoltaic storage and charging device according to claim 1, characterized in that: The energy storage system (2) further comprises: An energy storage battery system (2.5) for monitoring and controlling the battery module (2.1); and An energy management system (2.6) is used to monitor and control the energy of the microgrid inside the energy storage system (2).
4. The integrated photovoltaic storage and charging device according to claim 1, characterized in that: The energy storage system (2) further comprises: The fire protection system is used to monitor the fire safety of the integrated photovoltaic storage and charging device.
5. The integrated photovoltaic storage and charging device according to claim 1, characterized in that: The photovoltaic power generation system (1) comprises: Photovoltaic components (1.1), installed outside the integrated photovoltaic storage and charging device, for converting solar energy into electrical energy; and A photovoltaic combiner box (1.2) is connected to the photovoltaic assembly (1.1) and is used to collect the electric energy generated by the photovoltaic assembly (1.1) and connect it to the energy storage system (2).
6. The integrated photovoltaic storage and charging device according to claim 5, characterized in that: The photovoltaic power generation system (1) further comprises: The second DC-DC converter (1.3) is connected to the photovoltaic combiner box (1.2) and the energy storage system (2) and is used for converting the electric energy collected by the photovoltaic combiner box (1.2) into direct current electric energy required by the energy storage system (2).
7. The integrated photovoltaic storage and charging device according to claim 5, characterized in that: The photovoltaic components (1.1) are connected via series-parallel circuits to combine the electrical energy and connect it to the photovoltaic combiner box (1.2).
8. The integrated photovoltaic storage and charging device according to claim 1, characterized in that: The charging pile system (3) comprises: A charging pile (3.1), equipped with one or more charging pile gun lines, for charging the electrical device; and The charging pile intelligent controller is used to monitor and control the charging pile.