Photovoltaic power generation device for public charging pile

Abstract

The utility model discloses a photovoltaic power generation device for a public charging pile, which relates to the technical field and comprises a support and a solar panel fixedly mounted on the support, the solar panel, a charging controller, a storage battery and an inverter are electrically connected in sequence, and an electric countercurrent prevention device is electrically connected between the solar panel and the charging controller. The box body is used for internally shielding and installing the electric countercurrent prevention device, the charging controller, the storage battery and the inverter; the utility model has the advantages that the current direction and the current size of a real-time monitoring system are provided by arranging the electric countercurrent prevention device, once the countercurrent condition is detected, the connection can be quickly cut off or a control strategy can be quickly adjusted, the countercurrent can be prevented, and the normal operation and the safety of the system can be ensured; meanwhile, a box body is arranged for shielding and protecting the electric countercurrent prevention device, the charging controller, the storage battery and the inverter; and a heat preservation layer, a moisture absorption layer and a ventilation assembly are arranged, so that the problem that the electric countercurrent prevention device, the charging controller, the storage battery and the inverter are damaged due to overheating and overhumidity can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and more specifically to a photovoltaic power generation device for a public charging pile. Background Art

[0002] Public charging piles use photovoltaic power generation devices, which is a green energy application method that converts solar energy into electricity for charging electric vehicles; this combination not only helps reduce dependence on traditional fossil energy and reduce carbon emissions, but also improves the energy self-sufficiency and sustainability of public charging facilities (such as application number: CN202022430085.0, a charging pile with a photovoltaic power generation device);

[0003] Existing solar power generation panels (such as application number: CN202222137218.4 A photovoltaic power generation component panel based on an off-grid system), in which it is stated that "when the battery pack is used to supply power, it also needs to pass through the controller, and when the battery pack outputs electricity, it is also connected to an inverter", but when the "V-shaped photovoltaic power generation component panel transmits electricity to the controller", in the case of battery current reflux, etc., the safety is insufficient; at the same time, when the "controller, battery pack, and inverter" are installed inside, the heat generated will accelerate the damage to the components. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned technical problems and provide a photovoltaic power generation device for a public charging pile.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] The utility model proposes a photovoltaic power generation device for a public charging pile, comprising a bracket and a solar panel fixed thereon, the solar panel, a charging controller, a battery and an inverter are electrically connected in sequence, an anti-electric backflow device is electrically connected between the solar panel and the charging controller, and also comprises a box body for built-in shielding installation of the anti-electric backflow device, the charging controller, the battery and the inverter.

[0007] As a preferred technical solution of the utility model, a base is fixedly mounted on the bottom end of the bracket, and the box body is fixedly mounted on the base.

[0008] As a preferred technical solution of the utility model, the inner wall of the box is sequentially fixed with a heat preservation layer and a moisture absorbing layer, and the anti-current reverse device, charging controller, battery and inverter are all fixedly installed on the inner wall of the moisture absorbing layer.

[0009] As a preferred technical solution of the utility model, at least one set of ventilation components connecting the outer side of the box with the interior of the moisture absorbing layer is installed on the box.

[0010] As a preferred technical solution of the utility model, the ventilation component includes a controller electrically connected to the inverter, the controller is electrically connected to the temperature and humidity sensor and the fan respectively, a through hole connected to the inside of the moisture absorption layer is provided outside the box body, and the fan is installed inside the through hole.

[0011] As a preferred technical solution of the utility model, the ventilation assembly also includes a filter layer fixedly installed inside the opening, and the filter layer is closer to the outside of the box than the fan.

[0012] The beneficial effects of the utility model are as follows:

[0013] By placing an anti-electric reverse current device 3 between the solar panel 2 and the charging controller 4, the system current direction and magnitude can be monitored in real time. Once a reverse current is detected, the connection can be quickly cut off or the control strategy can be adjusted to prevent the reverse current from occurring, thereby ensuring the normal operation and safety of the system. At the same time, a box 7 is provided to shield and protect the anti-electric reverse current device 3, the charging controller 4, the battery 5 and the inverter 6.

[0014] The heat-insulating layer 9, moisture-absorbing layer 10 and ventilation assembly 11 can alleviate the damage of the anti-inverter 3, the charging controller 4, the battery 5 and the inverter 6 caused by overheating and overhumidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure numerals: bracket-1, solar panel-2, anti-electric backflow device-3, charging controller-4, battery-5, inverter-6, box-7, base-8, insulation layer-9, moisture absorption layer-10, ventilation component-11, controller-111, temperature and humidity sensor-112, fan-113, outlet-114, filter layer-115. DETAILED DESCRIPTION Example 1

[0017] like Figure 1 As shown, this embodiment proposes: a photovoltaic power generation device for a public charging pile, including a bracket 1 and a solar panel 2 fixed thereon, the solar panel 2, the charging controller 4, the battery 5 and the inverter 6 are electrically connected in sequence (such as Figure 1 As shown, electrical connection wires, cables, etc. can be used between the electrical connections, and the inverter 6 is provided with an electrical connection wire passing through the box 7 described below, which is used to connect to an external charging pile (the charging pile is not shown);

[0018] An anti-backflow device 3 (the anti-backflow device 3 may be a ZF863 anti-backflow protection device, etc.) is electrically connected between the solar panel 2 and the charging controller 4 to provide a real-time monitoring system (such as the electric backflow of the battery 5) with current direction and magnitude. Once a backflow is detected, the connection can be quickly cut off and other controls can be performed to prevent the backflow from occurring, thereby ensuring the normal operation and safety of the system.

[0019] The box 7 (such as a box 7 for installing an anti-current reverse device 3, a charging controller 4, a battery 5 and an inverter 6) is also included. Figure 1 As shown, the box body 7 has a box cavity and a box door for opening and closing the box cavity, such as an electric cabinet, etc.), providing hidden protection and reducing the possibility of damage, theft, etc.

[0020] The bottom end of the bracket 1 is fixed with a base 8, and the box body 7 is fixed on the base 8 to provide overall support. Example 2

[0021] like Figure 1 As shown, the difference from Example 1 is that: it also includes that the inner wall of the box body 7 is sequentially bonded with a heat-insulating layer 9 and a moisture-absorbing layer 10 (the heat-insulating layer 9 can be a polystyrene foam board, etc., to provide a heat-insulating effect inside the box body 7 and slow down the temperature change), (the moisture-absorbing layer 10 can be a silica gel desiccant board or a molecular sieve desiccant board or a diatom mud board, etc., for absorbing the transition moisture inside the box body 7), (the inner wall of the box body 7 and the heat-insulating layer 9, the heat-insulating layer 9 and the moisture-absorbing layer 10 can be bonded by bonding, etc.);

[0022] And the anti-electrical reverse current device 3, the charging controller 4, the battery 5 and the inverter 6 are all fixedly installed on the inner wall of the moisture absorbing layer 10 (according to the above, after the thermal insulation layer 9 and the moisture absorbing layer 10 are provided, the anti-electrical reverse current device 3, the charging controller 4, the battery 5 and the inverter 6 are correspondingly arranged on the inner wall of the moisture absorbing layer 10, which can be achieved by bonding or the like).

[0023] At least one set of ventilation components 11 connecting the outer side of the box 7 with the inside of the moisture absorbing layer 10 is installed on the box 7. Since the charging controller 4, the battery 5 and the inverter 6 will continuously generate heat inside the box 7 due to operation, ventilation treatment is required inside and outside the box 7 to alleviate the problems of overheating and overhumidity.

[0024] In order to implement the above-mentioned ventilation assembly 11, it is proposed that Figure 1 As shown, the specific structure and composition of the ventilation component 11 can be as follows: the ventilation component 11 includes a controller 111 (such as Figure 1 As shown, the inverter 6 is directly connected to the controller 111, which is convenient to use), (the controller 111 can be a PLC controller, which pre-sets the sensing data of the temperature and humidity sensor 112 below);

[0025] The controller 111 is electrically connected to the temperature and humidity sensor 112 and the fan 113 respectively (according to the above, the controller 111 has a built-in microprocessor to connect the temperature and humidity sensor 112 and the fan 113, and the model of the temperature and humidity sensor 112 can be: DHT22 / AM2302, etc.);

[0026] The box body 7 is provided with a through hole 114 connected to the inside of the moisture absorption layer 10, and the fan 113 is installed inside the through hole 114. The temperature and humidity sensor 112 senses the temperature and humidity, and the microprocessor controls the opening and closing of the fan 113 to generate guided wind force to exchange air inside and outside the box body 7);

[0027] The ventilation assembly 11 further includes a filter layer 115 fixedly mounted inside the opening 114 (the filter layer 115 can be a layer of air-permeable material such as non-woven fabric, for example Figure 1 As described, the filter layer 115 is arranged in a manner of cutting off the opening 114 to provide a dust-proof effect during ventilation), and the filter layer 115 is closer to the outside of the box 7 than the fan 113 (the air passing position is reasonably set, and the filter layer 115 first contacts the outside of the box 7 to provide the effect of a clean fan 113).

[0028] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0029] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photovoltaic power generation device for a public charging pile, comprising a bracket (1) and a solar panel (2) fixed thereon, wherein the solar panel (2), a charging controller (4), a battery (5) and an inverter (6) are electrically connected in sequence, and characterized in that: An anti-electric backflow device (3) is electrically connected between the solar panel (2) and the charging controller (4), and also includes a box (7) for internally shielding and installing the anti-electric backflow device (3), the charging controller (4), the battery (5) and the inverter (6).

2. A photovoltaic power generation device for a public charging pile according to claim 1, characterized in that: A base (8) is fixedly mounted on the bottom end of the bracket (1), and the box body (7) is fixedly mounted on the base (8).

3. A photovoltaic power generation device for a public charging pile according to claim 1, characterized in that: The inner wall of the box body (7) is fixedly provided with a heat-insulating layer (9) and a moisture-absorbing layer (10) in sequence, and the anti-current reverse device (3), the charging controller (4), the storage battery (5) and the inverter (6) are all fixedly mounted on the inner wall of the moisture-absorbing layer (10).

4. A photovoltaic power generation device for a public charging pile according to claim 3, characterized in that: At least one set of ventilation components (11) is installed on the box body (7) and communicates between the outer side of the box body and the interior of the moisture absorbing layer (10).

5. A photovoltaic power generation device for a public charging pile according to claim 4, characterized in that: The ventilation assembly (11) comprises a controller (111) electrically connected to the inverter (6); the controller (111) is electrically connected to the temperature and humidity sensor (112) and the fan (113), respectively; a through hole (114) connected to the inside of the moisture absorption layer (10) is provided outside the box (7); and the fan (113) is installed inside the through hole (114).

6. A photovoltaic power generation device for a public charging pile according to claim 5, characterized in that: The ventilation assembly (11) further comprises a filter layer (115) fixedly mounted inside the opening (114), and the filter layer (115) is closer to the outside of the box body (7) than the fan (113).

Images