Movable intelligent charging pile with energy storage function

Abstract

The invention discloses a mobile intelligent charging pile with an energy storage function, and relates to the technical field of charging piles, and the mobile intelligent charging pile comprises a charging system module which comprises a main control module, and a user interaction unit, a communication module and a DC-DC module which are connected with the main control module; the battery system module comprises a storage battery pack, and the storage battery pack is connected with the main control module; and the high-voltage box is a multidirectional electric energy distribution hub, and a plurality of direct-current bus ports of the high-voltage box are respectively connected with a direct-current port of the storage battery pack, an input end of the direct-current DC-DC module and a rectification output end of the alternating-current module. According to the movable intelligent charging pile with the energy storage function, by integrating the energy storage device, energy storage and release are achieved, the charging process is optimized, power grid load fluctuation is reduced, the charging efficiency is improved, the movable intelligent charging pile can be combined with a renewable energy system, and efficient utilization of energy is achieved.

Description

Technical Field

[0001] This invention relates to the field of charging pile technology, specifically to a mobile intelligent charging pile with energy storage function. Background Technology

[0002] With the widespread use of electric vehicles, the demand for charging stations is constantly increasing. Generally, electric vehicle charging stations draw power from the AC power grid. However, due to the limitations of the AC power grid's power supply, especially the limited capacity of a single transformer substation, it is impossible to connect charging stations exceeding its capacity. Furthermore, the cost of electricity on the AC power grid may vary at different times, and electric vehicle charging is a random activity, resulting in situations where peak electricity rates are incurred or full-power charging is not possible. If energy storage devices are used to store electrical energy during periods of low electricity rates or grid downtime, and then release it during periods of high electricity rates or peak demand when the grid is overloaded, the problems of grid-side load constraints and rate differences can be greatly alleviated.

[0003] Therefore, it is necessary to propose a mobile smart charging pile with energy storage function to solve the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved The purpose of this invention is to provide a mobile smart charging pile with energy storage function to solve the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a portable smart charging pile with energy storage function, comprising: Charging system module: The charging system module includes a main control module, as well as a user interaction unit, a communication module and a DC-DC module connected to the main control module; Battery system module: The battery system module includes a battery pack, which is connected to the main control module; High-voltage box: The high-voltage box is a multi-directional power distribution hub, and its multiple DC bus ports are respectively connected to: the DC port of the battery pack, the input terminal of the DC-DC module, and the rectifier output terminal of the AC module; The main control module is configured to monitor the state of charge of the battery pack, the grid load, and the user-side charging demand in real time, and control the high-voltage box to perform the following operations: Off-peak energy storage phase: The battery pack is charged via the power grid during periods of low grid load. Power output stage: When a load is detected to be connected to the DC-DC module, the battery pack is controlled to supply power to the grid individually or in coordination, based on the state of charge of the battery pack and the real-time load of the grid.

[0006] Preferably, the AC module, high-voltage box, DC-DC module, battery pack and energy storage converter are all fixedly connected to the inside of the integrated frame, and a DC power supply port, an AC power supply port, a three-phase charging port and a three-phase discharging port are fixedly connected to one side of the integrated frame.

[0007] Preferably, the DC power supply port is connected to the high-voltage box, and the AC power supply port is connected to the AC side of the AC module.

[0008] Preferably, it also includes an energy storage converter, wherein the DC side of the energy storage converter is connected to the high-voltage box, and the three-phase charging port and the three-phase discharging port are both connected to the AC side of the energy storage converter.

[0009] Preferably, the charging system module further includes a power supply module, the input terminal of which is connected to the high-voltage box, and the output terminal of which is connected to the main control module.

[0010] Preferably, the user interaction unit includes a display screen and a card reader.

[0011] Preferably, the battery pack is connected to the charging equipment via an international standard communication board.

[0012] Preferably, the output terminal of the DC-DC module is connected to a DC charging gun, and a shunt, a DC contactor, and a fuse are connected in sequence between the DC-DC module and the DC charging gun.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a mobile smart charging pile with energy storage function, which has the following beneficial effects: 1. This portable smart charging pile with energy storage function stores energy during off-peak hours and discharges it during peak hours, effectively balancing the grid load, reducing grid fluctuations, and optimizing the grid load.

[0014] 2. This portable smart charging pile with energy storage function can quickly release electrical energy to support fast charging of electric vehicles, shorten charging time, and improve charging efficiency.

[0015] 3. This portable smart charging pile with energy storage function utilizes off-peak electricity prices for energy storage and discharges during peak hours, reducing the operating costs of the charging pile.

[0016] 4. This portable smart charging pile with energy storage function connects to renewable energy through a DC power supply port, realizing the efficient use of clean energy and reducing dependence on the traditional power grid.

[0017] 5. This portable smart charging pile with energy storage function enables user interaction through a display screen and card reader, and achieves remote monitoring and intelligent scheduling of the charging pile through a communication module, thereby improving the user experience. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the structure of the present invention; Figure 2 This is a rear view schematic diagram of the structure of the present invention; Figure 3 This is a left-side view of the structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the present invention; Figure 5 This is a system framework diagram of the structure of the present invention; Figure 6 This is a charge-discharge diagram of the structure of the present invention.

[0019] In the diagram: 1. AC module; 2. High voltage box; 3. DC-DC module; 4. Battery pack; 5. Integrated rack; 6. Energy storage converter; 8. DC power supply port; 9. AC power supply port; 10. Three-phase charging port; 11. Three-phase discharging port; 12. LED strip; 14. Display screen; 15. Card reader; 16. Shunt; 17. DC contactor; 18. Fuse; 19. Main control module; 20. Base. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figure 1-6 As shown, a mobile smart charging pile with energy storage function includes a charging system module, a battery system module, and a high-voltage box 2. The charging system module includes a main control module 19, as well as a user interaction unit, a communication module, and a DC-DC module 3 connected to the main control module 19. It is connected to the background system through the communication module for remote monitoring of the equipment. The battery system module includes a battery pack 4, which is connected to the main control module 19. The high-voltage box 2 is a multi-directional power distribution hub, and its multiple DC bus ports are respectively connected to: the DC port of the battery pack 4, the input terminal of the DC-DC module 3, and the rectifier output terminal of the AC module 1. The main control module 19 is configured to monitor the state of charge (SOC) of the battery pack 4, the grid load, and the user-side charging demand in real time, and control the high-voltage box 2 to perform the following operations: Off-peak energy storage phase: charging the battery pack 4 through the grid during off-peak hours; Power output phase: when a load is detected connected to the DC-DC module 3, controlling the battery pack 4 to supply power independently or collaboratively with the grid based on the SOC of the battery pack 4 and the real-time grid load. Specifically: Pure battery power supply mode: When the remaining power percentage of battery pack 4 is higher than the preset threshold and the real-time load of the power grid is higher than the preset peak threshold, the high voltage box 2 is controlled to disconnect from the power grid and conduct the energy path from battery pack 4 to DC-DC module 3, so that battery pack 4 supplies power to the load alone. Pure grid power supply mode: When the remaining power percentage of battery pack 4 is lower than the preset minimum threshold or the real-time load of the grid is lower than the preset low threshold, the high voltage box 2 is controlled to conduct the energy path from the grid (through AC module 1) to DC-DC module 3, and the grid supplies power to the load alone; Hybrid power supply mode: When the remaining power percentage of battery pack 4 is within the available range but insufficient to meet the load demand and the real-time load of the power grid does not reach the peak threshold, the high-voltage box 2 controls the energy path from battery pack 4 and the power grid (through AC module 1) to DC-DC module 3, so that battery pack 4 and the power grid work together to supply power to the load.

[0022] Power supply execution: Based on the selected power supply mode, the specified energy path switching and power distribution are achieved by controlling the on / off state of the corresponding switching devices or contactors inside the high-voltage box 2.

[0023] Specifically, the charging system module also includes a power supply module. The input terminal of the power supply module is connected to the high-voltage box 2, and the output terminal of the power supply module is connected to the main control module 19. By directly drawing power from the DC bus of the high-voltage box 2, the reliance on an external independent power source is eliminated; this provides redundant power protection for the entire charging system module, ensuring that basic system monitoring functions are maintained during grid interruptions or deep discharge of the battery pack 4.

[0024] In some embodiments, for ease of movement, the AC module 1, high-voltage box 2, DC-DC module 3, battery pack 4, and energy storage converter 6 are all fixedly connected to the inside of the integrated frame 5. A DC power supply port 8, an AC power supply port 9, a three-phase charging port 10, and a three-phase discharging port 11 are fixedly connected to one side of the integrated frame 5. Integrating these components onto the integrated frame 5 facilitates movement and transportation. Preferably, a base 20 is fixedly connected to the bottom end of the integrated frame 5 to enhance the structural strength of the bottom.

[0025] Specifically, the DC power supply port 8 is connected to the high-voltage box 2, and the AC power supply port 9 is connected to the AC side of the AC module 1; it also includes an energy storage converter 6, the DC side of which is connected to the high-voltage box 2, and the three-phase charging port 10 and the three-phase discharging port 11 are both connected to the AC side of the energy storage converter 6.

[0026] By configuring a DC power supply port 8, an AC power supply port 9, and a three-phase charging port 10, three independent power supply paths are formed. This allows the system to receive direct power from photovoltaic or other renewable DC power sources via the DC power supply port 8; receive rectified power from the AC grid via the AC power supply port 9; and receive high-power three-phase AC power via the three-phase charging port 10, thus expanding the system's energy adaptability in diverse power supply scenarios. A three-phase discharge port 11 is also provided, enabling the system to be connected to electrical equipment for use as an emergency power source.

[0027] To enhance usability, the user interaction unit includes a display screen 14 and a card reader 15. Specifically, the display screen 14 is configured to display real-time status parameters of the battery pack 4, charging history data, electricity price fluctuation curves, and an operation guidance interface; the card reader 15 supports IC card and NFC identity recognition and communicates with the backend management system in real time, improving user convenience and supporting diverse payment methods. Preferably, it also includes a light strip 12 for displaying the device's operating status.

[0028] Battery pack 4 communicates with the charging equipment via an international standard communication board. During the charging process of battery pack 4 through the charging pile, this international standard communication board transmits operating parameters such as voltage, current, temperature, and SOC of battery pack 4 to the main control system of the charging pile in real time. This is to control the charging power, suppress the risk of thermal runaway, and ensure its operational safety.

[0029] To enhance safety, a DC charging gun is connected to the output of DC-DC module 3. A shunt 16, a DC contactor 17, and a fuse 18 are connected sequentially between DC-DC module 3 and the DC charging gun.

[0030] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable smart charging pile with energy storage function, characterized in that, include: Charging system module: The charging system module includes a main control module (19), and a user interaction unit, a communication module and a DC-DC module (3) connected to the main control module (19). Battery system module: The battery system module includes a battery pack (4), which is connected to the main control module (19); High-voltage box (2): The high-voltage box (2) is a multi-directional power distribution hub, and its multiple DC bus ports are respectively connected to: the DC port of the battery pack (4), the input terminal of the DC-DC module (3), and the rectifier output terminal of the AC module (1); The main control module (19) is configured to monitor the state of charge of the battery pack (4), the grid load and the user-side charging demand in real time, and control the high-voltage box (2) to perform the following operations: Off-peak energy storage phase: During off-peak hours of grid load, the battery pack (4) is charged through the grid; Power output stage: When a load is detected to be connected to the DC-DC module (3), the battery pack (4) is controlled to supply power to the grid individually or in coordination with the grid according to the state of charge of the battery pack (4) and the real-time load of the grid.

2. A portable smart charging pile with energy storage function according to claim 1, characterized in that: The AC module (1), high voltage box (2), DC-DC module (3), battery pack (4) and energy storage converter (6) are all fixedly connected to the inside of the integrated frame (5). The integrated frame (5) is fixedly connected to a DC power supply port (8), an AC power supply port (9), a three-phase charging port (10) and a three-phase discharging port (11) on one side.

3. A portable smart charging pile with energy storage function according to claim 2, characterized in that: The DC power supply port (8) is connected to the high-voltage box (2), and the AC power supply port (9) is connected to the AC side of the AC module (1).

4. A portable smart charging pile with energy storage function according to claim 2, characterized in that: It also includes an energy storage converter (6), the DC side of which is connected to the high voltage box (2), and the three-phase charging port (10) and the three-phase discharging port (11) are both connected to the AC side of the energy storage converter (6).

5. A portable smart charging pile with energy storage function according to claim 1, characterized in that: The charging system module also includes a power supply module, the input end of which is connected to the high voltage box (2), and the output end of which is connected to the main control module (19).

6. A portable smart charging pile with energy storage function according to claim 1, characterized in that: The user interaction unit includes a display screen (14) and a card reader (15).

7. A portable smart charging pile with energy storage function according to claim 1, characterized in that: The battery pack (4) is connected to the charging equipment via an international standard communication board.

8. A portable smart charging pile with energy storage function according to claim 1, characterized in that: The output terminal of the DC-DC module (3) is connected to a DC charging gun, and a shunt (16), a DC contactor (17) and a fuse (18) are connected in sequence between the DC-DC module (3) and the DC charging gun.

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