Novel distributed charging pile module

Abstract

The invention relates to a novel distributed charging pile module, which comprises an AC power line, a DC power line, a power grid AC power supply, a photovoltaic cell panel, a photovoltaic inverter distribution box, a charging pile and a remote power supply control switch, and is characterized in that the remote power supply control switch is connected with the photovoltaic inverter distribution box through the AC power line; the photovoltaic inverter distribution box is connected with the photovoltaic cell panel through a DC power line, the charging pile is connected with the remote power supply control switch through an AC power line, and the power grid AC power supply is connected with the remote power supply control switch. The arrangement of the charging pile module is optimized, the power battery pack is creatively used as an energy storage unit, photovoltaic power generation, battery energy storage and the charging pile are deeply integrated, multiple working states are achieved, off-peak electricity supplement and off-peak electricity utilization are jointly achieved, the economic efficiency is improved, recycling of old energy is improved, the pressure of a power grid is relieved, and the system is suitable for application and popularization.

Description

Technical Field

[0001] The present invention relates to the field of charging piles, and in particular to a novel distributed charging pile module. Background Art

[0002] Traditional charging stations connect directly to the municipal power grid, increasing grid load pressure during peak hours (such as evening charging), potentially leading to regional power shortages. Furthermore, high peak-hour electricity prices for industrial, commercial, and residential users drive up charging costs. According to statistics, peak-hour electricity costs for charging stations in some regions account for over 60% of operating costs, significantly hindering the adoption of electric vehicles. Despite the rapid growth in photovoltaic power generation, intermittent power generation (e.g., daytime and nighttime fluctuations, weather conditions), hinders the reliable supply of electricity for charging stations. Existing photovoltaic systems often utilize a "self-generated, self-used" model, with surplus power fed to the grid. This results in a high curtailment rate of 15%-20%, resulting in significant energy waste. Electric vehicle batteries suffer from "capacity redundancy," with the average daily mileage of most vehicles accounting for only 30%-40% of their battery life. During idle periods, the batteries remain inefficient, yet they still hold significant energy storage value. However, effective recycling methods are lacking. Existing charging stations, photovoltaic systems, and energy storage equipment operate independently, lacking a unified energy scheduling mechanism. The inability to dynamically adjust energy flow according to grid electricity price fluctuations, photovoltaic power generation, and vehicle charging demand results in low energy utilization efficiency. For this reason, a new distributed charging pile module is designed. Summary of the Invention

[0003] The purpose of the present invention is to provide a new distributed charging pile module to solve the above technical problems. To achieve the above purpose, the present invention adopts the following technical solutions: A new type of distributed charging pile module includes an AC power line, a DC power line, a grid AC power supply, a photovoltaic panel, a photovoltaic inverter distribution box, a charging pile, and a remote power control switch. The remote power control switch is connected to the photovoltaic inverter distribution box via the AC power line, the photovoltaic inverter distribution box is connected to the photovoltaic panel via the DC power line, the charging pile is connected to the remote power control switch via the AC power line, and the grid AC power supply is connected to the remote power control switch.

[0004] On the basis of the above technical solution, the charging pile is internally provided with an AC incoming line contactor, a surge protector, an AC leakage protection switch, a bidirectional transformer, a rectifier, an inverter, a node switch, a DC leakage protection switch, a charging pile monitoring main computer, and a fuse protector. The lower end of the AC incoming line contactor is connected to the AC power line, the surge protector is connected to the upper side of the AC incoming line contactor through the AC power line, the AC leakage protection switch is connected to one side of the surge protector through the AC power line, the bidirectional transformer is connected to the AC leakage protection switch through the AC power line, the input end of the rectifier and the output end of the inverter are respectively connected to the bidirectional transformer through the AC power line, and the rectifier The output end of the rectifier and the input end of the inverter are connected to the DC leakage protection switch through a DC power line, and the connection nodes on the DC power line where the output end of the rectifier and the input end of the inverter are connected to the DC leakage protection switch are respectively provided with node switches. A charging gun is connected to the outside of the charging pile, and the charging gun is connected to the DC leakage protection switch. The input and output ends of the rectifier and the inverter are respectively connected to fuse protectors. The charging pile monitoring main computer is respectively connected to both sides of the AC leakage protection switch and the DC leakage protection switch through monitoring wires. The AC incoming line contactor AAC leakage protection switch, DC leakage protection switch, and node switch are all connected to the charging pile monitoring main computer through control wires.

[0005] Based on the above technical solution, the output direction of the charging pile is that the remote power control switch is connected to the AC input contactor, the surge protector is connected to the AC input contactor through the AC power line, the AC leakage protection switch is connected to the surge protector through the AC power line, the bidirectional transformer is connected to the AC leakage protection switch through the AC power line, the rectifier is connected to the bidirectional transformer through the AC power line, the node switch is connected to the rectifier through the DC power line, the DC leakage protection switch is connected to the node switch through the DC power line, and the charging gun is connected to the DC leakage protection switch through the DC power line.

[0006] Based on the above technical solution, the energy storage backflow direction of the charging pile is that the DC leakage protection switch is connected to the charging gun through the DC power line, the node switch is connected to the DC leakage protection switch through the DC power line, the inverter is connected to the node switch through the DC power line, the bidirectional transformer is connected to the inverter through the AC power line, the AC leakage protection switch is connected to the bidirectional transformer through the AC power line, the surge protector is connected to the AC leakage protection switch through the AC power line, the AC incoming line contactor is connected to the surge protector through the AC power line, and the remote power control switch is connected to the AC incoming line contactor through the AC power line.

[0007] Based on the above technical solution, the remote power control switch consists of a conduction switching rod, a photovoltaic power terminal, a grid power terminal, and a charging pile terminal. The conduction switching rod is provided in two groups, and the two groups of conduction switching rods are connected concentrically. The photovoltaic power terminal, the grid power terminal, and the charging pile terminal are arranged horizontally. The side ends of the conduction switching rod can be respectively contacted and connected with the photovoltaic power terminal, the grid power terminal, and the charging pile terminal. The photovoltaic power terminal is connected to the photovoltaic inverter distribution box through an AC power line, the grid power terminal is connected to the grid AC power supply, and the charging pile terminal is connected to the AC incoming contactor through the AC power line.

[0008] Compared with the existing technology, the present invention has the following advantages: the present invention optimizes the setting of the charging pile module, creatively uses the power battery pack as the energy storage unit, and uses photovoltaic power generation, battery energy storage, and charging piles for deep integration to achieve multiple working states. It can realize peak-shifting power replenishment and off-peak power consumption, improve economic efficiency, increase the reuse of old energy, alleviate the pressure on the power grid, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a diagram of the overall appearance of the present invention.

[0010] Figure 2 It is a schematic diagram of the structural plane of the present invention.

[0011] Figure 3 This is a plan view of the charging pile of the present invention.

[0012] Figure 4 This is a schematic diagram of the charging pile process of the charging work of the present invention.

[0013] Figure 5 This is a schematic diagram of the power recovery charging pile process of the present invention.

[0014] Figure 6 This is a schematic diagram of the main structure of the remote power control switch of the present invention.

[0015] In the figure: AC power line 1, DC power line 2, grid AC power supply 3, photovoltaic panel 4, photovoltaic inverter distribution box 5, charging pile 6, remote power control switch 7; AC line contactor 6-1A, surge protector 6-2B, AC leakage protection switch 6-3C, bidirectional transformer 6-4D, rectifier 6-5E, inverter 6-6F, node switch 6-7, DC leakage protection switch 6-8G, charging pile monitoring main computer 6-9H, fuse protector 6-10K, charging gun 6-11, monitoring wire 6-12, control wire 6-13; The switching rod 7-1, the photovoltaic power terminal 7-2, the grid power terminal 7-3, and the charging pile terminal 7-4 are connected. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementations.

[0017] A new type of distributed charging pile module includes an AC power line 1, a DC power line 2, a grid AC power supply 3, a photovoltaic panel 4, a photovoltaic inverter distribution box 5, a charging pile 6, and a remote power control switch 7. The remote power control switch 7 is connected to the photovoltaic inverter distribution box 5 through the AC power line 1, the photovoltaic inverter distribution box 5 is connected to the photovoltaic panel 4 through the DC power line 2, the charging pile 6 is connected to the remote power control switch 7 through the AC power line 1, and the grid AC power supply 3 is connected to the remote power control switch 7.

[0018] The charging pile 6 is internally provided with an AC incoming line contactor 6-1A, a surge protector 6-2B, an AC leakage protection switch 6-3C, a bidirectional transformer 6-4D, a rectifier 6-5E, an inverter 6-6F, a node switch 6-7, a DC leakage protection switch 6-8G, a charging pile monitoring main computer 6-9H, and a fuse protector 6-10K. The lower end of the AC incoming line contactor 6-1A is connected to the AC power line 1, the surge protector 6-2B is connected to the upper side of the AC incoming line contactor 6-1A through the AC power line 1, the AC leakage protection switch 6-3C is connected to one side of the surge protector 6-2B through the AC power line 1, the bidirectional transformer 6-4D is connected to the AC leakage protection switch 6-3C through the AC power line 1, the input end of the rectifier 6-5E and the output end of the inverter 6-6F are respectively connected to the bidirectional transformer 6-4D through the AC power line 1, and the output end of the rectifier 6-5E and The input end of the inverter 6-6F is connected to the DC leakage protection switch 6-8G through the DC power line 2, and the connection nodes on the DC power line 2 where the output end of the rectifier 6-5E and the input end of the inverter 6-6F are connected to the DC leakage protection switch 6-8G are respectively provided with node switches 6-7. The outside of the charging pile 6 is connected to a charging gun 6-11, and the charging gun 6-11 is connected to the DC leakage protection switch 6-8G. The input and output ends of the rectifier 6-5E and the inverter 6-6F are respectively connected to the fuse protector 6-10K. The charging pile monitoring main computer 6-9H is respectively connected to the two sides of the AC leakage protection switch 6-3C and the DC leakage protection switch 6-8G through the monitoring wire 6-12. The AC input contactor 6-1A, AC leakage protection switch 6-3C, DC leakage protection switch 6-8G, and node switch 6-7 are all connected to the charging pile monitoring main computer 6-9H through the control wire 6-13.

[0019] The output direction of the charging pile 6 is that the remote power control switch 7 is connected to the AC input contactor 6-1A, the surge protector 6-2B is connected to the AC input contactor 6-1A through the AC power line 1, the AC leakage protection switch 6-3C is connected to the surge protector 6-2B through the AC power line 1, the bidirectional transformer 6-4D is connected to the AC leakage protection switch 6-3C through the AC power line 1, the rectifier 6-5E is connected to the bidirectional transformer 6-4D through the AC power line 1, the node switch 6-7 is connected to the rectifier 6-5E through the DC power line 2, the DC leakage protection switch 6-8G is connected to the node switch 6-7 through the DC power line 2, and the charging gun 6-11 is connected to the DC leakage protection switch 6-8G through the DC power line 2.

[0020] The energy storage and return direction of the charging pile 6 is that the DC leakage protection switch 6-8G is connected to the charging gun 6-11 through the DC power line 2, the node switch 6-7 is connected to the DC leakage protection switch 6-8G through the DC power line 2, the inverter 6-6F is connected to the node switch 6-7 through the DC power line 2, the bidirectional transformer 6-4D is connected to the inverter 6-6F through the AC power line 1, the AC leakage protection switch 6-3C is connected to the bidirectional transformer 6-4D through the AC power line 1, the surge protector 6-2B is connected to the AC leakage protection switch 6-3C through the AC power line 1, the AC incoming line contactor 6-1A is connected to the surge protector 6-2B through the AC power line 1, and the remote power control switch 7 is connected to the AC incoming line contactor 6-1A through the AC power line 1.

[0021] The remote power control switch 7 is composed of a conduction switching rod 7-1, a photovoltaic power terminal 7-2, a grid power terminal 7-3, and a charging pile terminal 7-4. The conduction switching rod 7-1 is provided with two groups, and the two groups of conduction switching rods 7-1 are connected concentrically. The photovoltaic power terminal 7-2, the grid power terminal 7-3, and the charging pile terminal 7-4 are arranged horizontally. The side ends of the conduction switching rod 7-1 can be respectively contacted and connected with the photovoltaic power terminal 7-2, the grid power terminal 7-3, and the charging pile terminal 7-4. The photovoltaic power terminal 7-2 is connected to the photovoltaic inverter distribution box 5 through the AC power line 1, the grid power terminal 7-3 is connected to the grid AC power supply 3, and the charging pile terminal 7-4 is connected to the AC incoming line contactor 6-1A through the AC power line 1.

[0022] Working principle of the present invention: This charging pile module mainly has four working states.

[0023] The first operating state is when the photovoltaic panel is connected to the grid and the charging pile is not working. In this operating condition, the charging gun 6-11 in the charging pile 6 is not connected to the power consumption end or the power consumption end has reached its upper limit and can no longer consume electricity. At the same time, the photovoltaic panel 4 is operating normally. At this time, the connection state of the remote power control switch 7 is that the two conductive switching rods 7-1 are connected to the photovoltaic power supply terminal 7-2 and the grid power supply terminal 7-3 respectively, connecting the photovoltaic power supply and the grid power supply to achieve grid connection. The photovoltaic panel 4 converts the DC power after the photoelectric reaction into AC power through the conversion action of the photovoltaic inverter distribution box 5, and then integrates the DC power into the grid.

[0024] The second operating state is when the photovoltaic panels are not connected to the grid and the charging pile is normally charging the power user. In this operating condition, when the photovoltaic panels 4 are not operating and are not continuously and stably generating DC power, the charging pile's charging guns 6-11 are connected to the power user and there is a continuous power demand. The two sets of conduction switching rods 7-1 in the remote power control switch 7 are connected to the grid power terminal 7-3 and the charging pile terminal 7-4, respectively, so that the AC power from the grid can be directly connected to the charging pile 6 and used.

[0025] The third operating state is when the photovoltaic panels are connected to the grid and the charging pile is normally charging the power user. Under this operating condition, the photovoltaic panels are connected to the grid and the power generated by the photovoltaic panels 4 is sufficient for the power user. The two sets of conduction switching rods 7-1 in the remote power control switch 7 are connected to the photovoltaic power terminal 7-2 and the charging pile terminal 7-4 respectively. The charging pile 6 can directly use the photovoltaic panels 4 as a power source without being connected to the grid power supply.

[0026] The fourth operating state is when the charging pile uses power from the user end to achieve grid connection. This operating condition occurs when the photovoltaic panel 4 is unable to continuously generate stable grid-connected power, and other power users on the grid AC power source 3 have high power demand, while the power users of the charging guns 6-11 connected to the charging pile 6 do not have a large power demand. Therefore, the charging pile 6 can be used as a storage end to provide a stable power supplement to the grid.

[0027] In the above four working states, Figure 4What is shown is the connection relationship of the internal components of the charging pile 6 when it is working in the second and third working states, and it mainly shows the situation where the power end of the charging gun 6-11 of the charging pile 6 has power demand. Regardless of the second and third working states, the starting end is the remote power control switch 7, and the remote power control switch 7 controls the AC power to enter the AC incoming contactor 6-1A through the AC power line 1; the AC incoming contactor 6-1A can be used as the main incoming control switch of the charging pile, controlling the operation and protection of the charging pile 6; the back side of the AC incoming contactor 6-1A is connected to the surge protector 6-2B, and the connected surge protector 6-2B can reduce the impact caused by instantaneous high voltage caused by lightning and switch operation; it is then connected to the AC leakage protection switch 6-3C, which can protect the safety of subsequent transformers, rectifiers and other equipment. Monitoring wires 6-12 are used on both sides of the AC leakage protection switch 6-3C to connect the charging The charging pile monitoring computer 6-9H monitors various circuit parameters and adjusts the operation of various components in a timely manner. The bidirectional transformer 6-4D connected thereto adjusts the operating voltage of the incoming AC power to meet the power needs of various users. The rectifier 6-5E is then connected to convert traditional AC power into DC power. The subsequent node switch 6-7 controls the direction of the circuit connection. When connected in the charging state, the node switch 6-7 on the inverter 6-6F is disconnected and the node switch 6-7 on the rectifier 6-5E is connected to prevent damage to the rectifier 6-5E due to reverse current. The fuse protector 6-10K protects the connected components, rectifier 6-5E and inverter 6-6F. The DC leakage protection switch 6-8G controls the connection between the user and the charging pile 6, providing mutual protection. The charging pile monitoring computer 6-9H controls the operating status of all components within the charging pile 6 and monitors their temperature and operating parameters.

[0028] This charging pile module has the fourth working state. Figure 5 The fourth operating state is shown in FIG. In this operating state, the power consumption end of the charging station 6 functions as an energy storage device, inputting power to the grid and operating in the opposite direction of the current flow during the aforementioned charging process. However, the difference from the aforementioned operation is that the node switch 6-7 on the rectifier 6-5E is disconnected, and the node switch 6-7 on the inverter 6-6F is turned on, so that the DC power is converted to AC power by the inverter 6-6F, and then, after voltage change by the bidirectional transformer 6-4D, is integrated into the grid AC power source 3.

[0029] The fourth working state needs to be realized under the condition of a relatively balanced power. For example, when the power demand of the power consumption end other than the charging pile 6 in the grid AC power supply 3 is greater than the supply capacity of the grid AC power supply 3, it can be switched to the reverse grid connection function, and the photovoltaic panel 4 in the third working state can be combined to charge the power consumption end of the charging pile 6. When the demand is large and the photovoltaic panel 4 cannot work, it can be enabled. In actual use, retired power batteries can even be used as fixed energy storage equipment, and it can be used in multiple aspects, multiple levels and flexibly.

[0030] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, based on the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A new type of distributed charging pile module, characterized in that: The invention comprises an AC power line (1), a DC power line (2), a grid AC power supply (3), a photovoltaic cell panel (4), a photovoltaic inverter distribution box (5), a charging pile (6), and a remote power control switch (7), wherein the remote power control switch (7) is connected to the photovoltaic inverter distribution box (5) via the AC power line (1), the photovoltaic inverter distribution box (5) is connected to the photovoltaic cell panel (4) via the DC power line (2), the charging pile (6) is connected to the remote power control switch (7) via the AC power line (1), and the grid AC power supply (3) is connected to the remote power control switch (7).

2. A new type of distributed charging pile module according to claim 1, characterized in that: The charging pile (6) is internally provided with an AC line contactor (6-1A), a surge protector (6-2B), an AC leakage protection switch (6-3C), a bidirectional transformer (6-4D), a rectifier (6-5E), an inverter (6-6F), a node switch (6-7), a DC leakage protection switch (6-8G), a charging pile monitoring main computer (6-9H), and a fuse protector (6-10K). The lower end of the AC line contactor (6-1A) is connected to the AC power line (1), and the surge protector (6-2B) is connected to the AC power line (1) through the AC line contactor (6-1A). The C power line (1) is connected to the upper side of the AC incoming contactor (6-1A), the AC leakage protection switch (6-3C) is connected to one side of the surge protector (6-2B) through the AC power line (1), the bidirectional transformer (6-4D) is connected to the AC leakage protection switch (6-3C) through the AC power line (1), the input end of the rectifier (6-5E) and the output end of the inverter (6-6F) are respectively connected to the bidirectional transformer (6-4D) through the AC power line (1), and the output of the rectifier (6-5E) is connected to the bidirectional transformer (6-4D). The end and the input end of the inverter (6-6F) are connected to the DC leakage protection switch (6-8G) through a DC power line (2), and the connection nodes on the DC power line (2) connecting the output end of the rectifier (6-5E) and the input end of the inverter (6-6F) to the DC leakage protection switch (6-8G) are respectively provided with node switches (6-7), the outside of the charging pile (6) is connected to a charging gun (6-11), and the charging gun (6-11) is connected to the DC leakage protection switch (6-8G). The input and output ends of the device (6-6F) are respectively connected to fuse protectors (6-10K); the charging pile monitoring main computer (6-9H) is respectively connected to both sides of the AC leakage protection switch (6-3C) and the DC leakage protection switch (6-8G) through monitoring wires (6-12); the AC incoming line contactor (6-1A), AC leakage protection switch (6-3C), DC leakage protection switch (6-8G), and node switch (6-7) are all connected to the charging pile monitoring main computer (6-9H) through control wires (6-13).

3. A new type of distributed charging pile module according to claim 2, characterized in that: The output direction of the charging pile (6) is that the remote power control switch (7) is connected to the AC input contactor (6-1A), the surge protector (6-2B) is connected to the AC input contactor (6-1A) via the AC power line (1), the AC leakage protection switch (6-3C) is connected to the surge protector (6-2B) via the AC power line (1), the bidirectional transformer (6-4D) is connected to the AC leakage protection switch (6-3C) via the AC power line (1), the rectifier (6-5E) is connected to the bidirectional transformer (6-4D) via the AC power line (1), the node switch (6-7) is connected to the rectifier (6-5E) via the DC power line (2), the DC leakage protection switch (6-8G) is connected to the node switch (6-7) via the DC power line (2), and the charging gun (6-11) is connected to the DC leakage protection switch (6-8G) via the DC power line (2).

4. A new type of distributed charging pile module according to claim 2, characterized in that: The energy storage and return direction of the charging pile (6) is that the DC leakage protection switch (6-8G) is connected to the charging gun (6-11) through the DC power line (2), the node switch (6-7) is connected to the DC leakage protection switch (6-8G) through the DC power line (2), the inverter (6-6F) is connected to the node switch (6-7) through the DC power line (2), the bidirectional transformer (6-4D) is connected to the inverter (6-6F) through the AC power line (1), the AC leakage protection switch (6-3C) is connected to the bidirectional transformer (6-4D) through the AC power line (1), the surge protector (6-2B) is connected to the AC leakage protection switch (6-3C) through the AC power line (1), the AC incoming line contactor (6-1A) is connected to the surge protector (6-2B) through the AC power line (1), and the remote power control switch (7) is connected to the AC incoming line contactor (6-1A) through the AC power line (1).

5. A new type of distributed charging pile module according to claim 2, characterized in that: The remote power control switch (7) is composed of a conduction switching rod (7-1), a photovoltaic power terminal (7-2), a grid power terminal (7-3), and a charging pile terminal (7-4). The conduction switching rod (7-1) is provided with two groups, and the two groups of conduction switching rods (7-1) are connected and arranged concentrically. The photovoltaic power terminal (7-2), the grid power terminal (7-3), and the charging pile terminal (7-4) are arranged in a transverse arrangement. The side ends of the conduction switching rod (7-1) can be respectively contacted and connected with the photovoltaic power terminal (7-2), the grid power terminal (7-3), and the charging pile terminal (7-4). The photovoltaic power terminal (7-2) is connected to the photovoltaic inverter distribution box (5) through the AC power line (1), the grid power terminal (7-3) is connected to the grid AC power (3), and the charging pile terminal (7-4) is connected to the AC incoming line contactor (6-1A) through the AC power line (1).

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