Photovoltaic control device and system

Abstract

The present application relates to the field of photovoltaic device, specifically relates to a kind of photovoltaic control device.The photovoltaic control device includes shell, and photovoltaic controller is arranged in shell, and solar cell panel interface is arranged on shell, auxiliary power supply is equipped in the photovoltaic controller, the power input end of auxiliary power supply is connected with the power terminal of solar cell panel interface, the photovoltaic controller is opened after auxiliary power supply is connected with electricity, or it is closed after auxiliary power supply is powered off.The present application also relates to a kind of photovoltaic control system.The present application can realize the dormancy of photovoltaic controller by designing a kind of photovoltaic control device and system, does not need to configure additional equipment such as remote controller, reduces customer cost, and simultaneously, also does not need to increase switch, avoids the problems such as easy to damage, easy to misoperation, cost is high.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic equipment, and more specifically to a photovoltaic control device and system. Background Technology

[0002] Photovoltaic: short for solar photovoltaic power system, is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy.

[0003] However, photovoltaic energy storage products require long-distance transportation. During long-distance transportation, the electrical equipment needs to consume the minimum amount of electricity. The usual practice is to put the internal circuits into hibernation mode, transport them to the customer, and then wake up the entire circuit.

[0004] Existing sleep-wake solutions include: 1. Adding a wake-up switch; 2. Using an external remote control for wake-up.

[0005] However, the above wake-up methods have the following disadvantages: 1. The wake-up switch technology may be damaged; 2. The wake-up switch technology may be accidentally triggered during transportation, causing the equipment to start; 3. The wake-up switch technology requires additional switch costs and installation costs; 4. External remote control wake-up technology requires additional wireless or infrared remote control receiving and transmitting circuits, increasing circuit costs; 5. External remote control wake-up technology requires a separate remote control to be provided to the customer, increasing customer costs. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a photovoltaic control device and system that addresses the above-mentioned deficiencies of the prior art, and solves the problems of easy damage, easy misoperation, and high cost of the existing wake-up function.

[0007] The technical solution adopted by the present invention to solve its technical problem is: to provide a photovoltaic control device, the photovoltaic control device including a housing, a photovoltaic controller disposed in the housing, and a solar panel interface disposed on the housing, the photovoltaic controller having an auxiliary power supply, the power input terminal of the auxiliary power supply being connected to the power terminal of the solar panel interface, the photovoltaic controller being turned on after the auxiliary power supply is powered on, or turned off after the auxiliary power supply is powered off.

[0008] A preferred embodiment is that the auxiliary power supply further includes two short-circuit input terminals, and the solar panel interface includes two first short-circuit terminals respectively connected to the two short-circuit input terminals. The two short-circuit input terminals are connected in series to the power supply circuit of the auxiliary power supply.

[0009] A preferred embodiment is that the solar control device further includes a control switch and a drive circuit. The control switch is located between the power terminal of the solar panel interface and the power input terminal of the auxiliary power supply. The drive circuit is connected to the control switch, the power terminal of the solar panel interface, and the enable terminal of the photovoltaic controller. The input power from the power terminal of the solar panel interface and the control signal from the enable terminal of the photovoltaic controller can both drive the control switch path.

[0010] A preferred embodiment is as follows: the control switch includes a MOSFET Q1, the driving circuit includes a transistor Q2, the source of the MOSFET Q1 is connected to the power terminal of the solar panel interface, its drain is connected to the power input terminal of the auxiliary power supply, its gate is connected to the collector of the transistor Q2, and the base of the transistor Q2 is connected to the power terminal of the solar panel interface and the enable terminal of the photovoltaic controller, respectively. The input power of the solar panel interface power terminal and the control signal of the photovoltaic controller enable terminal can both drive the MOSFET Q1 to conduct.

[0011] A preferred embodiment is that the photovoltaic control device further includes a battery connected to the photovoltaic controller; and the photovoltaic control device further includes a load interface disposed on the housing, the load interface including two second short-circuit terminals, the two second short-circuit terminals and the two first short-circuit terminals being connected in series to two short-circuit input terminals, or the two second short-circuit terminals and the two first short-circuit terminals being connected in parallel to two short-circuit input terminals.

[0012] A preferred embodiment is that the photovoltaic control device further includes a battery connected to the photovoltaic controller; and the photovoltaic control device further includes a load interface disposed on the housing, the load interface including two second short-circuit terminals, the two second short-circuit terminals being connected in series between the control switch and the power input terminal of the auxiliary power supply; or, the two second short-circuit terminals being connected in series between the control switch and the power terminal of the solar panel interface; or, the two second short-circuit terminals being connected in parallel between the two ends of the control switch.

[0013] A preferred embodiment is that the photovoltaic control device further includes a timing module, and the photovoltaic controller generates a control signal under the control of the timing module and sends it through the enable terminal of the photovoltaic controller.

[0014] A preferred embodiment is that the solar panel interface is a waterproof female connector.

[0015] A preferred embodiment is that a reverse connection protection diode is provided between the power terminal of the solar panel interface and the power input terminal of the auxiliary power supply.

[0016] The technical solution adopted by the present invention to solve its technical problem is: to provide a photovoltaic control system, including a solar control device and a solar panel, wherein the socket of the solar panel includes a positive power output terminal, a negative power output terminal and two third short-circuit terminals, the two third short-circuit terminals are short-circuited and are respectively connected to the corresponding first short-circuit terminals when the solar panel interface is inserted into the socket of the solar panel.

[0017] The technical solution adopted by the present invention to solve its technical problem is: to provide a photovoltaic control system, including a solar control device and a load, wherein the load socket includes a positive power input terminal, a negative power input terminal and two fourth short-circuit terminals, the two fourth short-circuit terminals are short-circuited and are respectively connected to the corresponding second short-circuit terminals when the load interface is inserted into the load socket.

[0018] The beneficial effects of the present invention are that, compared with the prior art, the present invention designs a photovoltaic control device and system that can realize the sleep and wake-up of the photovoltaic controller simply by detecting whether an external device is connected through the solar panel interface and the load interface. It does not require additional configuration of devices such as remote control, thus reducing customer costs. At the same time, it does not require the addition of a switch, thus avoiding problems such as easy damage, easy misoperation, and high cost. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the photovoltaic control device of the present invention;

[0021] Figure 2 This is a schematic diagram of the photovoltaic control system based on solar panels according to the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a first embodiment of the photovoltaic control system based on solar panels and load of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a second embodiment of the photovoltaic control system based on solar panels and load of the present invention;

[0024] Figure 5 yes Figure 4 The circuit diagram. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] like Figure 1 As shown, the present invention provides a preferred embodiment of a photovoltaic control device.

[0027] The photovoltaic control device includes a housing 10, a photovoltaic controller 110 disposed within the housing 10, and a solar panel interface 120 disposed on the housing 10. The photovoltaic controller 110 is provided with an auxiliary power supply 111. The power input terminal of the auxiliary power supply 111 is connected to the power terminal of the solar panel interface 120. The photovoltaic controller 110 is turned on after the auxiliary power supply 111 is powered on, or turned off after the auxiliary power supply 111 is powered off.

[0028] Specifically, when the external solar panel 200 is inserted into the solar panel interface 120, the electrical energy from the external solar panel 200 is input to the power input terminal of the auxiliary power supply 111 through the power terminal of the solar panel interface 120, controlling the auxiliary power supply 111 to be powered on. The photovoltaic controller 110 then turns on after the auxiliary power supply 111 is powered on, exiting the sleep state and performing corresponding operations. Conversely, when the external solar panel 200 is unplugged from the solar panel interface 120, or when the external solar panel 200 does not generate electricity due to cloudy weather or nighttime, and therefore does not output electrical energy to the auxiliary power supply 111, the auxiliary power supply 111 enters a power-off state, and the photovoltaic controller 110 shuts down after the auxiliary power supply 111 is powered off, entering a sleep state or a shutdown state. This plug-and-play activation mechanism for the photovoltaic controller 110 is powerful yet features a simple activation circuit and structure, high stability, low cost, and wide applicability. It avoids the need for an additional activation switch or an external remote control, improving the user experience of the photovoltaic control device.

[0029] Furthermore, the power input terminals of the solar panel interface 120 should be positive and negative terminals, and the power input terminals of the auxiliary power supply 111 should also be positive and negative input terminals, forming a power circuit.

[0030] like Figure 2 As shown, the present invention provides a preferred embodiment of the short-circuit input terminal of the auxiliary power supply.

[0031] The auxiliary power supply 111 also includes two short-circuit input terminals. The solar panel interface 120 includes two first short-circuit terminals 121 respectively connected to the two short-circuit input terminals. The two short-circuit input terminals are connected in series in the power-on circuit of the auxiliary power supply 111. Specifically, the short-circuit input terminals of the auxiliary power supply 111 are connected in series in the power-on circuit of the auxiliary power supply 111. That is, when the two short-circuit input terminals are short-circuited, the power-on circuit in the auxiliary power supply 111 can form a circuit. Otherwise, even if power is connected to the power input terminals of the auxiliary power supply 111, the auxiliary power supply 111 cannot be turned on. Further, the solar panel interface 120 is provided with two first short-circuit terminals 121. By short-circuiting the two first short-circuit terminals 121, the two short-circuit input terminals are short-circuited.

[0032] In this embodiment, a preferred solution for a photovoltaic control system is provided. The photovoltaic control system includes a solar control device and a solar panel 200. The socket 210 of the solar panel 200 includes a positive power output terminal, a negative power output terminal, and two third short-circuit terminals 211. The two third short-circuit terminals 211 are short-circuited and are connected to the corresponding first short-circuit terminals 121 when the socket 210 of the solar panel 200 is inserted into the solar panel interface 120. Specifically, the solar panel interface 120 includes a corresponding positive power terminal, a negative power terminal, and two first short-circuit terminals 121. The four terminals are arranged sequentially to form a four-pin male connector, and the socket 210 of the solar panel 200 also forms a four-pin female connector, with corresponding pins. After actual insertion, the solar panel 200 outputs electrical energy to the positive terminal of the solar panel interface 120 through its positive power output terminal, activating the auxiliary power supply 111. Simultaneously, the solar panel 200 short-circuits the two first short-circuit terminals 121 of the solar panel interface 120 through its two third short-circuit terminals 211, thus establishing the power supply circuit for the auxiliary power supply 111. The specially designed male and female connectors, while ensuring the activation of the photovoltaic controller 110, also prevent incorrect connections due to other interface errors or misuse, providing a double safety measure.

[0033] Furthermore, and with reference Figure 3The photovoltaic control device further includes a battery 140 connected to the photovoltaic controller 110, and the battery 140 is also connected to the power input terminal of the auxiliary power supply 111; and the photovoltaic control device further includes a load interface 130 disposed on the housing 10, the load interface 130 including two second short-circuit terminals 131, the two second short-circuit terminals 131 and the two first short-circuit terminals 121 being connected in series to two short-circuit input terminals, or the two second short-circuit terminals 131 and the two first short-circuit terminals 121 being connected in parallel to two short-circuit input terminals. Specifically, the load interface 130 is also configured as a four-pin female connector, including positive and negative power supply terminals and two second short-circuit terminals 131. The photovoltaic control system also includes a load 300. The socket 310 of the load 300 includes a positive power input terminal, a negative power input terminal, and two fourth short-circuit terminals 311. The two fourth short-circuit terminals 311 are short-circuited and are connected to the corresponding second short-circuit terminals 131 when the socket 310 of the load 300 is inserted into the load interface 130. The specific structure is the same as that of the socket 210 and solar panel interface 120 of the solar panel 200. In particular, if the two second short-circuit terminals 131 and the two first short-circuit terminals 121 are connected in series to the two short-circuit input terminals, that is, if only the load 300 or the solar panel 200 is inserted, the power supply circuit of the auxiliary power supply 111 will not be conductive, and both need to be inserted at the same time to conduct. If the two second short-circuit terminals 131 and the two first short-circuit terminals 121 are connected in parallel to the two short-circuit input terminals, the auxiliary power supply 111 can be turned on when the load 300 or the solar panel 200 is inserted.

[0034] like Figure 4 and Figure 5 As shown, the present invention provides a preferred embodiment of the control switch and drive circuit for the auxiliary power supply 111.

[0035] The solar control device further includes a control switch and a drive circuit. The control switch is located between the power terminal of the solar panel interface 120 and the power input terminal of the auxiliary power supply 111. The drive circuit is connected to the control switch, the power terminal of the solar panel interface 120, and the enable terminal of the photovoltaic controller 110. The input power from the power terminal of the solar panel interface 120 and the control signal from the enable terminal of the photovoltaic controller 110 can both drive the control switch to conduct. Specifically, the control switch includes a MOSFET Q1, and the drive circuit includes a transistor Q2. The source of the MOSFET Q1 is connected to the power terminal of the solar panel interface 120, its drain is connected to the power input terminal of the auxiliary power supply 111, and its gate is connected to the collector of the transistor Q2. The base of the transistor Q2 is connected to both the power terminal of the solar panel interface 120 and the enable terminal of the photovoltaic controller 110. The input power from the power terminal of the solar panel interface 120 and the control signal from the enable terminal of the photovoltaic controller 110 can both drive the MOSFET Q1 to conduct.

[0036] In this embodiment, a preferred solution for a photovoltaic control system is provided. The socket 210 of the solar panel 200 is a two-pin male connector, including a positive power input terminal and a negative power input terminal. After the solar panel 200 is inserted into the solar panel interface 120, power is supplied to the power terminals of the solar panel interface 120. At this time, the power output of the power terminals of the solar panel interface 120 causes the transistor Q2 to conduct, that is, the collector of the transistor Q2 generates a voltage to drive the MOSFET Q1 to conduct, so that the power terminals of the solar panel interface 120 are connected to the power input terminal of the auxiliary power supply 111. The power of the solar panel 200 is input into the auxiliary power supply 111, turning on the auxiliary power supply 111. Further, the photovoltaic control device also includes a timing module. The photovoltaic controller 110 generates a control signal under the control of the timing module and sends it through the enable terminal of the photovoltaic controller 110. At night and on cloudy days, when the solar panel 200 cannot provide power, the photovoltaic controller 110 is kept on by its own drive.

[0037] Similarly, the photovoltaic control system also includes a load 300, meaning the photovoltaic control device also includes a battery 140, which is connected to the power input terminal of the auxiliary power supply 111. Furthermore, the photovoltaic control device also includes a load interface 130 disposed on the housing 10. The load interface 130 includes two second short-circuit terminals 131. These two second short-circuit terminals 131 are connected in series between the control switch and the power input terminal of the auxiliary power supply 111; or, the two second short-circuit terminals 131 are connected in series between the control switch and the power terminal of the solar panel interface 120; or, the two second short-circuit terminals 131 are connected in parallel to both ends of the control switch, representing the series and parallel configurations, respectively. The battery 140 is crucial for maintaining the connection of the load 300, providing power to the side where the solar panel 200 is unavailable.

[0038] In this embodiment, a reverse connection protection diode is provided between the power terminal of the solar panel interface 120 and the power input terminal of the auxiliary power supply 111 to prevent reverse connection; and a reverse connection protection diode is provided between the battery 140 and the power input terminal of the auxiliary power supply 111 to prevent reverse charging.

[0039] In this embodiment, the solar panel interface 120 is a waterproof female connector, which achieves waterproofing at the interface and improves the environmental adaptability of the photovoltaic control device.

[0040] The above description is merely the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the claims of the present invention are covered by the present invention.

Claims

1. A photovoltaic control device, characterized in that: The photovoltaic control device includes a housing, a photovoltaic controller disposed within the housing, and a solar panel interface disposed on the housing. The photovoltaic controller is equipped with an auxiliary power supply, and the power input terminal of the auxiliary power supply is connected to the power terminal of the solar panel interface. When an external solar panel is inserted into the solar panel interface, the electrical energy from the external solar panel is input to the power input terminal of the auxiliary power supply through the power terminal of the solar panel interface, controlling the auxiliary power supply to be powered on. The photovoltaic controller turns on after the auxiliary power supply is powered on, exits the sleep state, and performs the corresponding work. When the external solar panel is unplugged from the solar panel interface, or when the external solar panel does not generate electrical energy due to cloudy weather or nighttime and does not output electrical energy to the auxiliary power supply, the auxiliary power supply enters a power-off state, and the photovoltaic controller turns off after the auxiliary power supply is powered on and enters a sleep state or a shutdown state. The photovoltaic control device also includes a control switch and a drive circuit. The control switch is located between the power terminal of the solar panel interface and the power input terminal of the auxiliary power supply. The drive circuit is connected to the control switch, the power terminal of the solar panel interface, and the enable terminal of the photovoltaic controller. The input power of the solar panel interface and the control signal of the photovoltaic controller enable terminal can both drive the control switch path. The control switch includes a MOSFET Q1, and the driving circuit includes a transistor Q2. The source of the MOSFET Q1 is connected to the power terminal of the solar panel interface, its drain is connected to the power input terminal of the auxiliary power supply, and its gate is connected to the collector of the transistor Q2. The base of the transistor Q2 is connected to the power terminal of the solar panel interface and the enable terminal of the photovoltaic controller. The input power of the solar panel interface and the control signal of the photovoltaic controller enable terminal can both drive the MOSFET Q1 to conduct. The auxiliary power supply also includes two short-circuit input terminals. The solar panel interface includes two first short-circuit terminals respectively connected to the two short-circuit input terminals. The two short-circuit input terminals are connected in series to the power supply circuit of the auxiliary power supply. The photovoltaic control device also includes a battery connected to the photovoltaic controller. The photovoltaic control device also includes a load interface disposed on the housing. The load interface includes two second short-circuit terminals. The two second short-circuit terminals and the two first short-circuit terminals are connected in series to the two short-circuit input terminals, or the two second short-circuit terminals and the two first short-circuit terminals are connected in parallel to the two short-circuit input terminals. The photovoltaic control device also includes a timing module. The photovoltaic controller generates a control signal under the control of the timing module and sends it through the enable terminal of the photovoltaic controller.

2. The photovoltaic control device according to claim 1, characterized in that: The solar panel interface is a waterproof female connector.

3. The photovoltaic control device according to claim 1, characterized in that: A reverse connection protection diode is provided between the power terminal of the solar panel interface and the power input terminal of the auxiliary power supply.

4. A photovoltaic control system, characterized in that: The device includes a photovoltaic control device and a solar panel as described in any one of claims 1 to 3. The socket of the solar panel includes a positive power output terminal, a negative power output terminal, and two third short-circuit terminals. The two third short-circuit terminals are short-circuited and are respectively connected to the corresponding first short-circuit terminals when the solar panel interface is inserted into the socket of the solar panel.

5. A photovoltaic control system, characterized in that: The device includes a photovoltaic control device and a load as described in any one of claims 1 to 3. The load's socket includes a positive power input terminal, a negative power input terminal, and two fourth short-circuit terminals. The two fourth short-circuit terminals are short-circuited and are respectively connected to the corresponding second short-circuit terminals when the load interface is inserted into the load socket.

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