Light charging and storage integrated charging station

Abstract

The utility model discloses a light charging and storage integrated charging station, which comprises an alternating current bus, the alternating current bus is respectively and electrically connected with a photovoltaic assembly, an energy storage battery and a load, the energy storage battery receives electric energy of the photovoltaic assembly through the alternating current bus to perform energy storage operation, and the load comprises a charging station. The charging station receives the electric energy of the energy storage battery or the photovoltaic module to perform discharging and charging actions; the energy storage battery is provided with an energy storage system, the energy storage system comprises a battery management system, a thermal management system and a fire extinguishing system, the battery management system, the thermal management system and the fire extinguishing system are in mutual communication and electrical connection, and the AC bus is electrically connected with the energy management system. The fire extinguishing system is linked with the battery management system, so that once abnormal conditions are detected, fire extinguishing measures can be quickly started, and fire spreading is prevented. The charging station serves as a load and receives the electric energy of the photovoltaic module for charging, and when the electric energy generated by the photovoltaic module is insufficient to meet the charging requirement, the energy storage battery releases the stored electric energy for supplementary power supply.

Description

Technical Field

[0001] This utility model belongs to the field of charging station technology, and in particular relates to an integrated photovoltaic charging and energy storage charging station. Background Technology

[0002] Charging stations are facilities that provide electrical energy to various electric devices, similar to gas stations. Charging stations can be categorized into several types based on the type of equipment used, such as electric vehicle charging stations and mobile phone charging stations.

[0003] However, existing technologies have some problems: traditional new energy vehicle charging stations can cause a certain impact on the stability of the existing local power grid when charging in a centralized or fast manner, and the electricity consumption is huge. Therefore, we propose an integrated photovoltaic charging and energy storage charging station. Summary of the Invention

[0004] In response to the problems existing in the prior art, this utility model provides an integrated photovoltaic-charging-storage station, which solves the problem that traditional new energy vehicle charging stations will cause a certain impact on the stability of the existing local power grid and consume huge amounts of electricity when charging in a concentrated or fast manner.

[0005] This utility model is implemented as follows: an integrated photovoltaic-charging-storage station includes an AC bus, which is electrically connected to a photovoltaic module, an energy storage battery, and a load. The energy storage battery receives electrical energy from the photovoltaic module through the AC bus for energy storage. The load includes a charging station, which receives electrical energy from the energy storage battery or the photovoltaic module for discharging and charging. The energy storage battery is equipped with an energy storage system, which includes a battery management system, a thermal management system, and a fire extinguishing system. The battery management system, thermal management system, and fire extinguishing system are electrically connected to each other. The AC bus is electrically connected to an energy management system.

[0006] As a preferred embodiment of this invention, a photovoltaic inverter is further provided between the photovoltaic module and the AC bus, and the photovoltaic inverter is electrically connected to both the photovoltaic module and the AC bus.

[0007] As a preferred embodiment of this utility model, an energy storage converter is provided between the energy storage battery and the AC bus. The energy storage converter receives the electrical energy after it is inverted by the photovoltaic module and performs a conversion operation. The energy storage battery receives the electrical energy after it is converted by the energy storage converter.

[0008] In a preferred embodiment of this invention, the AC busbar is electrically connected to a transformer, and the transformer is electrically connected to a power grid.

[0009] In a preferred embodiment of this invention, the energy storage converter receives the DC power from the energy storage battery and converts it into AC power, and the transformer receives the AC power from the energy storage converter, performs a voltage transformation operation, and transmits it to the power grid.

[0010] In a preferred embodiment of this invention, the energy storage converter receives electrical energy from the energy storage battery and performs a conversion operation, while the load receives the converted electrical energy from the energy storage converter and performs a discharge operation.

[0011] As a preferred embodiment of this invention, the energy storage system further includes a cascade battery application system and an automotive power battery testing system.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes photovoltaic modules to convert solar energy into direct current (DC) power, which is then converted into alternating current (AC) power via an inverter and connected to an AC bus. The AC bus acts as the central power distribution hub, allocating the power generated by the photovoltaic modules to energy storage batteries or directly supplying power to charging stations. Upon receiving power from the AC bus, the energy storage batteries are charged through an energy storage system. Simultaneously, the battery management system monitors key parameters such as the battery's charge / discharge status, temperature, and voltage to ensure safe and stable operation. A thermal management system regulates battery temperature to prevent overheating and potential safety hazards. A fire suppression system works in conjunction with the battery management system, rapidly initiating fire suppression measures to prevent the spread of fire upon detecting any anomalies. The charging station, acting as a load, prioritizes receiving power from the photovoltaic modules. When the power generated by the photovoltaic modules is insufficient to meet charging demands, the energy storage batteries release stored energy to supplement power supply. Throughout this process, the energy management system plays a crucial role, intelligently scheduling power distribution based on the photovoltaic module's power generation, the energy storage status of the batteries, and the charging station's power requirements to achieve optimal energy utilization. It effectively solves the problems of traditional new energy vehicle charging stations impacting local power grid stability and incurring huge electricity costs, providing a more reliable and efficient charging solution for the promotion and application of new energy vehicles. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall process provided in this embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the energy storage system provided in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the intrinsically safe process of integrated photovoltaic, energy storage and charging provided in this embodiment of the utility model.

[0017] In the diagram: 1. Energy Management System; 2. Photovoltaic Module; 3. Energy Storage Battery; 4. Load; 5. AC Bus; 6. Energy Storage System; 7. Photovoltaic Inverter; 8. Energy Storage Converter; 9. Transformer;

[0018] 601. Battery Management System; 602. Thermal Management System; 603. Fire Extinguishing System; 604. Second-hand Battery Application System; 605. Automotive Power Battery Testing System. Detailed Implementation

[0019] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0020] The following embodiment of the present invention, with reference to Appendix 3, provides an integrated photovoltaic-charging-storage station, including an AC bus 5. The AC bus 5 is electrically connected to a photovoltaic module 2, an energy storage battery 3, and a load 4. The energy storage battery 3 receives electrical energy from the photovoltaic module 2 through the AC bus 5 for energy storage. The load 4 includes a charging station, which receives electrical energy from the energy storage battery 3 or the photovoltaic module 2 for discharging and charging. The energy storage battery 3 is equipped with an energy storage system 6, which includes a battery management system 601, a thermal management system 602, and a fire extinguishing system 603. The battery management system 601, the thermal management system 602, and the fire extinguishing system 603 are electrically connected to each other. The AC bus 5 is electrically connected to an energy management system 1.

[0021] In the aforementioned integrated photovoltaic-charging-storage station, photovoltaic modules 2 convert solar energy into direct current (DC) power, which is then converted into alternating current (AC) power via an inverter and connected to AC bus 5. AC bus 5 serves as the central power distribution hub, allocating the power generated by photovoltaic modules 2 to energy storage batteries 3 or directly supplying the charging station. Upon receiving power from AC bus 5, energy storage batteries 3 are charged via energy storage system 6. Simultaneously, battery management system 601 monitors key parameters such as battery charge / discharge status, temperature, and voltage to ensure safe and stable battery operation. Thermal management system 602 regulates battery temperature to prevent overheating and potential safety accidents. Fire suppression system 603 works in conjunction with battery management system 601, rapidly activating fire suppression measures to prevent the spread of fire upon detecting any abnormalities. The charging station, acting as a load 4, prioritizes receiving power from photovoltaic modules 2. When the power generated by photovoltaic modules 2 is insufficient to meet charging demands, energy storage batteries 3 release stored energy to supplement power supply. Throughout the process, the energy management system 1 plays a crucial role, intelligently scheduling power distribution based on the power generation of the photovoltaic modules 2, the energy storage status of the energy storage battery 3, and the power demand of the charging station, thereby achieving optimal energy utilization.

[0022] The introduction of photovoltaic modules 2 enables the charging station to utilize renewable energy for power generation, reducing reliance on the local power grid and thus alleviating the pressure on the grid and minimizing grid fluctuations caused by centralized or fast charging. Secondly, the addition of energy storage batteries 3 allows the charging station to continue providing charging services for new energy vehicles by releasing stored energy when the photovoltaic modules 2 generate insufficient power or when there is no sunlight at night, ensuring the continuous and stable operation of the charging station. Simultaneously, the presence of energy storage batteries 3 also plays a role in peak shaving and valley filling, releasing energy during peak grid loads to reduce the grid burden and storing energy during off-peak loads to improve energy utilization efficiency. Finally, the application of the energy management system 1 makes the energy utilization of the entire charging station more intelligent and efficient. It can intelligently schedule power distribution based on real-time data, optimize the energy usage structure, and reduce electricity costs. Furthermore, the energy management system 1 can interact with the grid to achieve coordinated operation, further improving energy utilization efficiency. This effectively solves the problems of traditional new energy vehicle charging stations impacting local grid stability and incurring huge electricity costs, providing a more reliable and efficient charging solution for the promotion and application of new energy vehicles.

[0023] The intrinsic safety technology of the photovoltaic-storage-charging integrated system establishes an efficient battery management system 601 (monitoring battery status), a thermal management system 602 (maintaining battery operating temperature and providing early warning of battery thermal runaway), and a fire extinguishing system 603 based on Internet of Things technology. It monitors the thermal runaway of the power battery and its own energy storage battery 3, and works with efficient fire extinguishing methods to ensure the safety of customers and charging station personnel and property. Compared with existing technologies, it has the characteristics of high recognition rate, low cost, and timely detection of hidden dangers.

[0024] In this embodiment, a photovoltaic inverter 7 is also provided between the photovoltaic module 2 and the AC bus 5, and the photovoltaic inverter 7 is electrically connected to both the photovoltaic module 2 and the AC bus 5. An energy storage converter 8 is provided between the energy storage battery 3 and the AC bus 5. The energy storage converter 8 receives the inverted electrical energy from the photovoltaic module 2 and performs a conversion operation. The energy storage battery 3 receives the converted electrical energy from the energy storage converter 8. A transformer 9 is electrically connected to the AC bus 5, and the transformer 9 is electrically connected to the power grid. The energy storage converter 8 receives the DC power from the energy storage battery 3 and converts it into AC power. The transformer 9 receives the AC power from the energy storage converter 8, performs a voltage transformation operation, and transmits it to the power grid. The energy storage converter 8 receives the electrical energy from the energy storage battery 3 and performs a conversion operation. The load 4 receives the converted electrical energy from the energy storage converter 8 and performs a discharge operation.

[0025] Photovoltaic module 2, as the core power generation unit of the system, absorbs solar energy and converts it into direct current (DC) power. Photovoltaic inverter 7 is electrically connected to photovoltaic module 2 and AC bus 5, converting DC power into AC power. This allows the power generated by photovoltaic module 2 to be smoothly connected to AC bus 5, providing a foundation for subsequent energy storage and power supply to load 4. Energy storage battery 3, as the energy storage unit in the system, plays a crucial role in balancing the volatility of photovoltaic power generation and the stability of the load 4's demand. Energy storage converter 8 receives the AC power inverted by photovoltaic inverter 7, performs a converter operation, converts it into DC power, and stores it in energy storage battery 3. When the system needs to supply power to load 4, energy storage converter 8 converts the DC power in energy storage battery 3 back into AC power to supply load 4. Load 4, including charging stations, is the main power-consuming unit of the integrated photovoltaic-charging-energy storage charging station system. Load 4 receives the AC power converted by energy storage converter 8, performs a discharge operation, and provides charging services for new energy vehicles. The process of load 4 consuming electricity is actually a crucial part of the system's energy utilization and a key step in achieving self-sufficiency in power supply. When the electricity generated by photovoltaic power generation exceeds the consumption of load 4 and the storage capacity of energy storage battery 3, the excess electricity will be transformed through transformer 9 and transmitted to the power grid. Transformer 9, as a key device connecting the system and the power grid, ensures the smooth connection of excess electricity to the grid. This not only improves energy utilization efficiency but also brings additional economic benefits to the system, achieving efficient utilization of renewable energy and stable operation of the power grid.

[0026] Throughout the entire operation, intelligent scheduling and monitoring are performed through the energy management system 1 to ensure the coordinated operation and efficient utilization of each component. The energy management system 1 adjusts the power distribution and scheduling strategies in real time based on the power generation of the photovoltaic modules 2, the energy storage status of the energy storage batteries 3, the power demand of the load 4, and the power supply status of the grid, thereby achieving optimal operation of the entire system.

[0027] In this embodiment, the energy storage system 6 also includes a secondary battery application system 604 and an automotive power battery detection system 605.

[0028] The 604 secondary battery application system is primarily responsible for screening and reusing recycled batteries. It employs both rapid and fine screening modes, flexibly handling batteries based on their condition and requirements. In rapid screening mode, the system analyzes the thermal and electrical characteristics of the batteries using charging and discharging equipment and infrared thermal imagers. Combining big data, neural network models, and infrared characteristic parameters, it quickly selects batteries with good consistency and reassembles them into new battery packs for system use. In fine screening mode, the system performs more in-depth disassembly, health evaluation, capacity sorting, and repair of the recycled batteries, ensuring optimal utilization of each battery. During application, the secondary battery system also utilizes grid power regulation, energy storage system power ratio allocation, and segmented control technologies for refined battery management. Simultaneously, monitoring and equalizing battery inconsistencies ensures the stability and optimization of the overall battery pack performance.

[0029] The 605 automotive power battery testing system is an implementation method for monitoring the state, assessing the health, and providing maintenance and repair technologies for power batteries in new energy vehicles. Specifically, by recording and analyzing data from each charge of the power battery, the system can accurately determine the battery's state and track its health over the long term. This technology not only improves efficiency but is also more readily accepted by customers. Furthermore, by collecting battery charge and discharge data and combining big data analysis and artificial intelligence calculations, the system obtains the degradation patterns of the power battery and develops precise battery state of charge and health monitoring technologies. Based on this firsthand data, the system has developed battery aging repair and maintenance technologies for different customers' batteries, providing personalized battery maintenance recommendations and solutions. These measures collectively slow down the aging process of the power battery and extend its service life.

[0030] The working principle of this utility model:

[0031] Photovoltaic module 2 converts solar energy into direct current (DC) power, which is then converted into alternating current (AC) power by an inverter and connected to AC bus 5. AC bus 5 acts as the power distribution center, distributing the power generated by photovoltaic module 2 to energy storage battery 3 or directly supplying the charging station. After receiving power from AC bus 5, energy storage battery 3 is charged through energy storage system 6. Simultaneously, battery management system 601 monitors key parameters such as battery charging / discharging status, temperature, and voltage to ensure safe and stable battery operation. Thermal management system 602 regulates battery temperature to prevent overheating and potential safety accidents. Fire suppression system 603 works in conjunction with battery management system 601; upon detecting an anomaly, it can quickly activate fire suppression measures to prevent the fire from spreading. The charging station, acting as load 4, prioritizes receiving power from photovoltaic module 2 for charging. When the power generated by photovoltaic module 2 is insufficient to meet charging demands, energy storage battery 3 releases its stored power to supplement the supply. Throughout the process, the energy management system 1 plays a crucial role, intelligently scheduling power allocation based on the power generation of the photovoltaic modules 2, the energy storage status of the energy storage batteries 3, and the power demand of the charging station, achieving optimal energy utilization. This effectively solves the problems of traditional new energy vehicle charging stations impacting local power grid stability and incurring huge electricity costs, providing a more reliable and efficient charging solution for the promotion and application of new energy vehicles.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic-charging-storage integrated charging station, comprising an AC bus (5), characterized in that: The AC bus (5) is electrically connected to the photovoltaic module (2), the energy storage battery (3) and the load (4) respectively. The energy storage battery (3) receives the electrical energy of the photovoltaic module (2) through the AC bus (5) to perform energy storage operation. The load (4) includes a charging station. The charging station receives the electrical energy of the energy storage battery (3) or the photovoltaic module (2) to perform discharge and charging operation. The energy storage battery (3) is equipped with an energy storage system (6). The energy storage system (6) includes a battery management system (601), a thermal management system (602) and a fire extinguishing system (603). The battery management system (601), the thermal management system (602) and the fire extinguishing system (603) are electrically connected to each other. The AC bus (5) is electrically connected to the energy management system (1).

2. The integrated photovoltaic-charging-energy-storage charging station as described in claim 1, characterized in that: A photovoltaic inverter (7) is also provided between the photovoltaic module (2) and the AC bus (5), and the photovoltaic inverter (7) is electrically connected to the photovoltaic module (2) and the AC bus (5) respectively.

3. The integrated photovoltaic-charging-energy-storage charging station as described in claim 2, characterized in that: An energy storage converter (8) is provided between the energy storage battery (3) and the AC bus (5). The energy storage converter (8) receives the electrical energy after it is inverted by the photovoltaic module (2) and performs a conversion operation. The energy storage battery (3) receives the electrical energy after it is converted by the energy storage converter (8).

4. The integrated photovoltaic-charging-energy-storage charging station as described in claim 3, characterized in that: The AC bus (5) is electrically connected to a transformer (9), and the transformer (9) is electrically connected to a power grid.

5. The integrated photovoltaic-charging-energy-storage charging station as described in claim 4, characterized in that: The energy storage converter (8) receives the DC power from the energy storage battery (3) and converts it into AC power. The transformer (9) receives the AC power from the energy storage converter (8), performs a voltage transformation operation, and transmits it to the power grid.

6. The integrated photovoltaic-charging-energy-storage charging station as described in claim 3, characterized in that: The energy storage converter (8) receives the electrical energy from the energy storage battery (3) and performs a conversion operation, while the load (4) receives the converted electrical energy from the energy storage converter (8) and performs a discharge operation.

7. The integrated photovoltaic-charging-energy-storage charging station as described in claim 1, characterized in that: The energy storage system (6) also includes a cascade battery application system (604) and an automotive power battery testing system (605).

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