Photovoltaic charging pile

Abstract

The utility model relates to the technical field of photovoltaic new energy equipment, in particular to a photovoltaic charging pile. The pile mainly comprises a pile body, the charging pile further comprises a carrying frame connecting base, a power supplementing photovoltaic panel and a main charging panel device installed in the pile body. The pile body is mounted on the carrying frame connecting seat; the main charging panel device comprises a main energy storage battery and a robot charging port; a direct-current adjustable voltage reduction device is connected between the power compensation photovoltaic panel and the main energy storage battery; and a first direct-current adjustable constant-voltage device is connected between the main energy storage battery and the robot charging port. According to the photovoltaic charging pile, rich solar energy resources of an original photovoltaic power plant are borrowed, and the photovoltaic panel cleaning robot is charged in real time in a following mode; no extra mains supply network needs to be introduced, the charging process is simple and efficient, and the charging method is more suitable for charging work of the photovoltaic panel cleaning robot of a large photovoltaic power plant.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic new energy equipment technical field, specifically relates to a photovoltaic charging pile. BACKGROUND

[0002] With the deepening application of photovoltaic power generation technology in many application scenarios, how to realize the panel self-cleaning of photovoltaic panels has become a problem that technicians focus on. In large photovoltaic power stations, in order to increase power generation, a plurality of independent photovoltaic panels are arranged to form a photovoltaic panel array, and a large number of operation and maintenance personnel are arranged to clean the panel of the photovoltaic panel array in the open photovoltaic power station, so as to ensure that the panel is not blocked and the highest solar energy utilization rate is obtained.

[0003] In actual application, in order to improve the modular management capability, the photovoltaic power station usually uses a chargeable photovoltaic panel cleaning robot with self-supporting force to perform the cleaning and sweeping work of the photovoltaic panel array. Because the number of photovoltaic panels that constitute a photovoltaic panel array is large in some large photovoltaic power stations, the photovoltaic panel cleaning robot has a long working stroke, and the power consumption is significantly improved. In order to avoid crushing the photovoltaic panel, the weight of the existing photovoltaic panel cleaning robot is limited, and it cannot carry a large battery, so how to conveniently and quickly charge the photovoltaic panel cleaning robot has become the focus of technicians.

[0004] In the prior art, the conventional charging means is that the photovoltaic panel cleaning robot obtains electric energy through the power network, and in this process, manual disassembly of the robot and carrying to the charging platform for wired charging are usually required, and the whole charging process is complicated and inefficient. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a photovoltaic charging pile, which uses the abundant solar energy resources of the original photovoltaic power plant to perform real-time charging on the photovoltaic panel cleaning robot in a following mode; it does not need to introduce an additional power network, the charging process is simple and efficient, and it is more suitable for the power charging work of the photovoltaic panel cleaning robot in a large photovoltaic power plant.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the specific technical scheme as follows:

[0007] A photovoltaic charging pile comprises a pile body, characterized in that the photovoltaic charging pile further comprises a carrying frame connecting seat, a power-supplying photovoltaic panel and a main charging panel device installed in the pile body; the pile body is installed on the carrying frame connecting seat; the main charging panel device comprises a main energy storage battery and a robot charging port; a direct-current adjustable voltage reduction device is connected between the power-supplying photovoltaic panel and the main energy storage battery; and a first direct-current adjustable constant voltage device is connected between the main energy storage battery and the robot charging port.

[0008] Thus, the photovoltaic panel cleaning robot is fixed on the carrying frame through the carrying frame connecting seat in the non-working state, and is driven by the carrying frame to move.

[0009] The pile body is installed on the carrying frame connecting seat, so that the pile body can move with the carrying frame, and the photovoltaic panel cleaning robot can be timely powered when the photovoltaic panel cleaning robot is in the non-working state.

[0010] The photovoltaic charging pile further comprises a power-supplying photovoltaic panel and a pile body electrically connected with the power-supplying photovoltaic panel. The power-supplying photovoltaic panel is installed on the carrying frame or a track supporting the carrying frame, and obtains a direct-current voltage by obtaining sunlight, like other photovoltaic arrays in the entire photovoltaic power plant. According to the power generation characteristics of the existing high-performance photovoltaic panel, the direct-current voltage directly obtained is usually above 28V, so a direct-current adjustable voltage reduction device is arranged to preliminarily reduce the voltage and perform constant-current constant-voltage stable operation. The direct-current adjustable voltage reduction device is connected between the power-supplying photovoltaic panel and the main energy storage battery, reduces the photovoltaic power generation direct-current voltage higher than 28V to 28V, and transmits the voltage to the main energy storage battery, so that the main energy storage battery performs the energy storage action and waits for subsequent power supply for the photovoltaic panel cleaning robot.

[0011] The first direct-current adjustable constant-voltage device is connected between the main energy storage battery and the robot charging port, specifically, one end of the first direct-current adjustable constant-voltage device is electrically connected with the main energy storage battery, and the other end of the first direct-current adjustable constant-voltage device is connected with the robot charging port. When the photovoltaic panel cleaning robot completes the work and returns to the carrying frame, the first direct-current adjustable constant-voltage device can be automatically connected with the robot charging port. At this time, the main energy storage battery releases a 28V charging voltage, and the first direct-current adjustable constant-voltage device reduces the voltage to charge the photovoltaic panel cleaning robot through the robot charging port. Specifically, the first direct-current adjustable constant-voltage device can selectively support the functions of voltage reduction and constant voltage. For example, when voltage reduction is required, the 28V direct-current voltage can be reduced to 24V to meet the required charging voltage of the photovoltaic panel cleaning robot.

[0012] As described above, through the power-supplying photovoltaic panel of the photovoltaic charging pile and the pile body electrically connected with the power-supplying photovoltaic panel, the intermediate energy storage action of the main energy storage battery can be used to accumulate the electric energy obtained by the power-supplying photovoltaic panel in advance and store the electric energy. When the photovoltaic panel cleaning robot needs power supply after completing the work, the main energy storage battery releases the previously accumulated electric energy, so that the photovoltaic panel cleaning robot can be powered on the carrying frame. Through the photovoltaic charging pile, the photovoltaic panel cleaning robot does not need to be manually transported for power supply at another place, the charging process is simple and efficient, and the photovoltaic charging pile is more suitable for the application requirements of large photovoltaic power plants.

[0013] As a preferred embodiment of the utility model, the main charging panel device further comprises a large-current relay for controlling the on-off of the charging loop and an independent voltage reducer connected with the large-current relay; and the large-current relay is connected with the first direct-current adjustable constant-voltage device.

[0014] Thus, one end of the large current relay is connected with the independent voltage reducer, and the other end is connected with the first direct current adjustable constant voltage device; the independent voltage reducer is connected with the main energy storage battery, and is used for reducing the 28V voltage output by the main energy storage battery to 24V; when the large current relay is attracted, the above-mentioned 24V voltage is stably regulated by the first direct current adjustable constant voltage device, and finally the photovoltaic panel cleaning robot is charged through the robot charging port to realize the function of controlling the on-off of the charging circuit.

[0015] As a preferred embodiment of the utility model, the main charging panel device further comprises a secondary power supply device for safety isolation, the secondary power supply device comprises a secondary energy storage battery for supplying power to the coil of the large current relay and a second direct current adjustable constant voltage device connected with the secondary energy storage battery; the second direct current adjustable constant voltage device is electrically connected with the large current relay.

[0016] Thus, when the large current relay is attracted, the above-mentioned 24V voltage is stably regulated by the second direct current adjustable constant voltage device to supply power to the secondary energy storage battery, and the secondary energy storage battery is charged; when the large current relay is disconnected, the charging path of the secondary energy storage battery is cut off. The secondary energy storage battery always stores a certain amount of electricity, and is connected with the coil of the large current relay to provide power support for the coil.

[0017] As a preferred embodiment of the utility model, the main charging panel device further comprises an overcharge prevention device, the overcharge prevention device comprises a first anti-backflow diode connected between the direct current adjustable voltage reducer and the main energy storage battery; further comprises a second anti-backflow diode connected between the robot charging port and the first direct current adjustable constant voltage device; further comprises a third anti-backflow diode connected between the secondary energy storage battery and the second direct current adjustable constant voltage device.

[0018] The overcharge prevention device mainly plays a safety protection role. Since the overcurrent in the entire photovoltaic charging pile is large, once the current is backfilled and backflowed, the battery device may be burned. The first anti-backflow diode is arranged between the direct current adjustable voltage reducer and the main energy storage battery; the second anti-backflow diode is arranged between the robot charging port and the first direct current adjustable constant voltage device; and the third anti-backflow diode is arranged between the secondary energy storage battery and the second direct current adjustable constant voltage device; so as to protect the safety of the main energy storage battery, the secondary energy storage battery and the working battery built in the photovoltaic panel cleaning robot. The anti-backflow diode is an ideal diode controller with reverse input protection function, which can replace the conventional diode to realize the anti-backfilling and charging backfilling protection of the solar energy, and can cut off the output voltage under the precision of millivolt.

[0019] As the preferred of the utility model, the main charging plate device still contains the auxiliary control assembly for providing the charging auxiliary function, the auxiliary control assembly contains the DAM controller, the DAM controller is connected with the large current relay, is used for controlling the large current relay to carry out the attraction or the disconnect action.

[0020] The DAM control module can select the industrial network controller with the multiway relay control output function in the prior art, after being connected with the large current relay, can control the large current relay according to the control instruction of Modbus RTU / TCP protocol, to indirectly control the on-off of the charging loop, and based on this, the safe isolation effect of controlling large voltage with small voltage can be realized.

[0021] As the preferred of the utility model, the auxiliary control assembly still contains the local router for providing the wireless network for the photovoltaic panel cleaning robot and the 4G industrial router connected with the local router, for converting mobile data into limited network for the local router.

[0022] The 4G industrial router can realize the internet of things function through 4G network, is connected with the local router, the local router can be used as a switch, carries out wireless network communication with the photovoltaic panel cleaning robot, and then downloads data or uploads command.

[0023] As the preferred of the utility model, the auxiliary control assembly still contains the illumination intensity sensor installed on the pile body and the 485 serial module connected with the illumination intensity sensor, for collecting and uploading illumination intensity information.

[0024] The illumination intensity sensor is installed on the pile body, collects illumination intensity information and sends it to the local router through the 485 serial module, and then transmits the information to the local server or cloud server for processing. The illumination intensity information can be used as feedback information to adjust the charging and discharging strategy of the whole photovoltaic charging pile, and improve its working efficiency.

[0025] As the preferred of the utility model, the auxiliary control assembly still contains the voltmeter and ammeter connected with the main energy storage battery, and the voltmeter and ammeter are used for collecting the output voltage and current of the main energy storage battery and displaying in real time.

[0026] Through the real-time display of the voltmeter and ammeter, the staff can be clearly informed of the current charging and discharging parameters of the main energy storage battery.

[0027] As the preferred of the utility model, the auxiliary control assembly contains the auxiliary multipath voltage reducer connected with the main energy storage battery, the auxiliary multipath voltage reducer still is connected with the DAM controller and is controlled by the DAM controller, the auxiliary multipath voltage reducer still is connected with the 485 serial port module, local router and 4G industrial router and carries out power supply.

[0028] In summary, the utility model has the beneficial effects as follows:

[0029] Through the power supply photovoltaic board of the photovoltaic charging pile and the pile body electrically connected with the power supply photovoltaic board, the intermediate storage effect of the main energy storage battery can be used to accumulate and store the electric energy obtained by the power supply photovoltaic board in advance, and when the photovoltaic cleaning robot needs power supply after work, the main energy storage battery releases the previously accumulated electric energy, so that the photovoltaic cleaning robot can realize power supply on the carrying frame. Through the photovoltaic charging pile, the photovoltaic cleaning robot does not need to be manually transported for power supply at different places, and the charging process is simple and efficient, which is more suitable for the application requirements of large-scale photovoltaic power plants. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the circuit structure connection diagram of the photovoltaic charging pile of the utility model;

[0031] Figure 2 It is the connection schematic diagram of the pile body and the power supply photovoltaic board of the photovoltaic charging pile.

[0032] In the drawing: power supply photovoltaic board 1, pile body 2, main charging plate device 3, main energy storage battery 31, robot charging port 32, DC adjustable voltage reduction device 33, first DC adjustable constant voltage device 34, large current relay 35, independent voltage reducer 36, auxiliary power supply device 37, auxiliary energy storage battery 371, second DC adjustable constant voltage device 372, anti-overcharge device 38, first anti-backflow diode 381, second anti-backflow diode 382, third anti-backflow diode 383, auxiliary control assembly 39, DAM controller 391, local router 392, 4G industrial router 393, light intensity sensor 394, 485 serial port module 395, voltage and current meter 396, auxiliary multipath voltage reducer 397. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Anyone can implement the present disclosure in various forms without being limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] As Figure 2As shown, the pile body 2 is installed on the carrier frame connecting seat, and the photovoltaic charging pile comprises the photovoltaic power compensation board 1 and the pile body 2 electrically connected with the photovoltaic power compensation board 1. The photovoltaic power compensation board 1 is installed on the carrier frame or the track carrying the carrier frame, and obtains direct current voltage by obtaining sunlight, like other photovoltaic arrays in the whole photovoltaic power station.

[0035] The main charging board device 3 is installed in the pile body 2. As shown, Figure 1 The main charging board device 3 comprises the main energy storage battery 31 and the robot charging port 32; the photovoltaic panel cleaning robot obtains electric energy from the main energy storage battery 31 by connecting with the robot charging port 32.

[0036] According to the power generation characteristics of the existing high-performance photovoltaic panel, the direct current voltage directly obtained is usually above 28V, so the direct current adjustable voltage reduction device 33 is arranged to preliminarily reduce the voltage and perform constant current and constant voltage stable operation. The direct current adjustable voltage reduction device 33 is connected between the photovoltaic power compensation board 1 and the main energy storage battery 31, reduces the photovoltaic power generation direct current voltage higher than 28V to 28V and transmits it to the main energy storage battery 31, and the main energy storage battery 31 performs the energy storage action and waits for subsequent power compensation for the photovoltaic panel cleaning robot.

[0037] The first direct current adjustable constant voltage device 34 is connected between the main energy storage battery 31 and the robot charging port 32, specifically, one end thereof is electrically connected with the main energy storage battery 31, and the other end is connected with the robot charging port 32; when the photovoltaic panel cleaning robot works and returns to the carrier frame, it can be automatically connected with the robot charging port 32, at this time, the main energy storage battery 31 releases the 28V charging voltage, and after the voltage reduction work of the first direct current adjustable constant voltage device 34, the photovoltaic panel cleaning robot is charged through the robot charging port 32; specifically, the first direct current adjustable constant voltage device 34 can selectively support the voltage reduction or constant voltage function; for example, when the voltage reduction is needed, the 28V direct current voltage can be reduced to 24V to meet the required charging voltage of the photovoltaic panel cleaning robot.

[0038] The main charging board device 3 further comprises a large-current relay 35 for controlling the on-off of the charging loop and an independent voltage reducer 36 connected with the large-current relay 35; the large-current relay 35 is connected with the first direct current adjustable constant voltage device 34.

[0039] Thus, one end of the large current relay 35 is connected to the independent voltage reducer 36, and the other end is connected to the first direct current adjustable constant voltage device 34; the independent voltage reducer 36 is connected to the main energy storage battery 31, and is used to reduce the 28V voltage output by the main energy storage battery 31 to 24V; when the large current relay 35 is attracted, the above-mentioned 24V voltage is stabilized by the constant voltage of the first direct current adjustable constant voltage device 34, and finally the photovoltaic panel cleaning robot is charged through the robot charging port 32 to realize the function of controlling the on-off of the charging circuit.

[0040] The main charging panel device 3 further comprises a secondary power supply device 37 for safety isolation, the secondary power supply device 37 comprises a secondary energy storage battery 371 for supplying power to the coil of the large current relay 35 and a second direct current adjustable constant voltage device 372 connected to the secondary energy storage battery 371; the second direct current adjustable constant voltage device 372 is electrically connected to the large current relay 35. When the large current relay 35 is attracted, the above-mentioned 24V voltage is stabilized by the constant voltage of the second direct current adjustable constant voltage device 372 to supply power to the secondary energy storage battery 371, and the secondary energy storage battery 371 is charged; when the large current relay 35 is disconnected, the charging path of the secondary energy storage battery 371 is cut off. The secondary energy storage battery 371 always stores a certain amount of electricity, and it is also connected to the coil of the large current relay 35 to provide power support for the coil.

[0041] The main charging panel device 3 further comprises an overcharge prevention device 38, the overcharge prevention device 38 comprises a first anti-backflow diode 381 connected between the direct current adjustable voltage reducer 33 and the main energy storage battery 31; further comprises a second anti-backflow diode 382 connected between the robot charging port 32 and the first direct current adjustable constant voltage device 34; further comprises a third anti-backflow diode 383 connected between the secondary energy storage battery 371 and the second direct current adjustable constant voltage device 372. The overcharge prevention device 38 mainly plays a safety protection role. Because the overcurrent in the entire photovoltaic charging pile is large, once the current is backflowed, the battery device may be burned. The first anti-backflow diode 381 is arranged between the direct current adjustable voltage reducer 33 and the main energy storage battery 31; the second anti-backflow diode 382 is arranged between the robot charging port 32 and the first direct current adjustable constant voltage device 34; the third anti-backflow diode 383 is arranged between the secondary energy storage battery 371 and the second direct current adjustable constant voltage device 372; in this way, the safety of the main energy storage battery 31, the secondary energy storage battery 371 and the working battery built-in in the photovoltaic panel cleaning robot is protected. The anti-backflow diode is an ideal diode controller with reverse input protection function, which can replace the conventional diode to realize the anti-backflow and charging backflow protection of the solar energy, and can cut off the output voltage at a millivolt level precision.

[0042] In another possible embodiment, the main charging panel device 3 further comprises an auxiliary control assembly 39 for providing charging auxiliary functions; the auxiliary control assembly 39 comprises a DAM controller 391; the DAM controller 391 is connected with the large-current relay 35 for controlling the large-current relay 35 to perform the attraction or disconnection action. The DAM controller 391 can be selected from the industrial-grade network controller with the multi-way relay control output function in the prior art, which, after being connected with the large-current relay 35, can control the large-current relay 35 according to the control instructions of the Modbus RTU / TCP protocol, so as to indirectly control the on-off of the charging loop, and based on this, the safe isolation effect of controlling the large voltage with the small voltage can be realized.

[0043] In another possible embodiment, the auxiliary control assembly 39 further comprises a local router 392 for providing a wireless network for the photovoltaic panel cleaning robot and a 4G industrial router 393 connected with the local router 392 for converting mobile data into a limited network for use by the local router 392. The 4G industrial router 393 can realize the Internet of Things function through the 4G network, which is connected with the local router 392, and the local router 392 can be used as a switch to communicate with the photovoltaic panel cleaning robot through the wireless network, so as to download data or upload commands.

[0044] In another possible embodiment, the auxiliary control assembly 39 further comprises an illumination intensity sensor 394 installed on the pile body 2 and a 485 serial module 395 connected with the illumination intensity sensor 394 for collecting and uploading the illumination intensity information. The illumination intensity sensor 394 is installed on the pile body 2, which collects the illumination intensity information and sends it to the local router 392 through the 485 serial module 395, and then transmits the information to the local server or the cloud server for processing. The illumination intensity information can be used as feedback information to adjust the charging and discharging strategy of the entire photovoltaic charging pile, thereby improving the working efficiency.

[0045] In another possible embodiment, the auxiliary control assembly 39 further comprises a voltage and current meter 396 connected with the main energy storage battery 31, which is used to collect and display the output voltage and current of the main energy storage battery 31 in real time. Through the real-time display of the voltage and current meter 396, the staff can clearly know the charging and discharging parameters of the main energy storage battery 31. The auxiliary control assembly 39 comprises an auxiliary multi-way voltage reducer 397 connected with the main energy storage battery 31; the auxiliary multi-way voltage reducer 397 is also connected with and controlled by the DAM controller 391; and the auxiliary multi-way voltage reducer 397 is also connected with and powered by the 485 serial module 395, the local router 392 and the 4G industrial router 393.

[0046] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application; in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. The structural member materials, sizes, shapes, etc. mentioned in the embodiments of the present application are all illustrative descriptions, and do not form strict or absolute limitations. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A photovoltaic charging pile, comprising a pile body (2), characterized in that, The photovoltaic charging pile also includes a transport frame connecting seat, a supplementary photovoltaic panel (1), and a main charging plate device (3) installed in the pile body (2); the pile body (2) is installed on the transport frame connecting seat; the main charging plate device (3) includes a main energy storage battery (31) and a robot charging port (32); a DC adjustable step-down device (33) is connected between the supplementary photovoltaic panel (1) and the main energy storage battery (31); a first DC adjustable constant voltage device (34) is connected between the main energy storage battery (31) and the robot charging port (32).

2. A photovoltaic charging pile according to claim 1, characterized in that, The main charging board device (3) also includes a high-current relay (35) for controlling the on / off state of the charging circuit and an independent step-down transformer (36) connected to the high-current relay (35); the high-current relay (35) is also connected to the first DC adjustable constant voltage device (34).

3. A photovoltaic charging pile according to claim 2, characterized in that, The main charging board device (3) also includes a secondary power supply device (37) for safety isolation. The secondary power supply device (37) includes a secondary energy storage battery (371) for supplying power to the coil of the high current relay (35) and a second DC adjustable constant voltage device (372) connected to the secondary energy storage battery (371). The second DC adjustable constant voltage device (372) is electrically connected to the high current relay (35).

4. A photovoltaic charging pile according to claim 3, characterized in that, The main charging board device (3) also includes an overcharge protection device (38), which includes a first anti-reverse current diode (381) connected between the DC adjustable step-down device (33) and the main energy storage battery (31), a second anti-reverse current diode (382) connected between the robot charging port (32) and the first DC adjustable constant voltage device (34), and a third anti-reverse current diode (383) connected between the auxiliary energy storage battery (371) and the second DC adjustable constant voltage device (372).

5. A photovoltaic charging pile according to claim 2, characterized in that, The main charging board device (3) also includes an auxiliary control component (39) for providing charging assistance function; the auxiliary control component (39) includes a DAM controller (391); the DAM controller (391) is connected to the high current relay (35) and is used to control the high current relay (35) to perform a closing or opening action; the DAM controller (391) is connected to the main energy storage battery (31).

6. A photovoltaic charging pile according to claim 5, characterized in that, The auxiliary control component (39) also includes a local router (392) for providing a wireless network for the photovoltaic panel cleaning robot and a 4G industrial router (393) connected to the local router (392) for converting mobile data into a limited network for use by the local router (392).

7. A photovoltaic charging pile according to claim 6, characterized in that, The auxiliary control component (39) also includes a light intensity sensor (394) installed on the pile (2) and a 485 serial port module (395) connected to the light intensity sensor (394) for collecting and uploading light intensity information.

8. A photovoltaic charging pile according to claim 7, characterized in that, The auxiliary control component (39) also includes a voltage and current meter (396) connected to the main energy storage battery (31), which is used to collect the output voltage and current of the main energy storage battery (31) and display them in real time.

9. A photovoltaic charging pile according to claim 8, characterized in that, The auxiliary control component (39) also includes an auxiliary multiplexer (397) connected to the main energy storage battery (31); the auxiliary multiplexer (397) is also connected to and controlled by the DAM controller (391); the auxiliary multiplexer (397) is also connected to and powered by the 485 serial port module (395), the local router (392), and the 4G industrial router (393).

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