A photovoltaic intelligent charging control device

Abstract

The present invention discloses a photovoltaic intelligent charging control device, which relates to the field of photovoltaic charging technology, including a photovoltaic module for photoelectric conversion; a central control module for module control; an energy storage control module for energy storage and discharge; a second conversion module for providing a sinusoidal voltage and DC boost regulation in a negative half-cycle; a first conversion module for providing a sinusoidal voltage and DC boost regulation in a positive half-cycle, and superimposing the electric energy output by a wide output control module; an output control module for controlling an electric energy transmission path; a path control module for controlling the electric energy transmission state of the output control module; a wide output control module for energy storage and superimposing electric energy with the first conversion module; an AC / DC charging module for AC charging and DC charging; and a DC charging module for DC wide voltage charging. The photovoltaic intelligent charging control device of the present invention can realize AC / DC charging and can provide a wider range of DC electric energy through simple components.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic charging, and in particular to a photovoltaic intelligent charging control device. Background Art

[0002] With the continuous application of new energy and solar energy, the application scope of photovoltaic controllers is becoming wider and wider. In order to realize AC charging and DC charging, the existing photovoltaic intelligent charging control device generally adopts two voltage conversion methods, namely inverter charging device and BOOST charging device. Through two sets of different voltage conversion methods, DC-AC regulation and DC-DC regulation are realized to meet the charging needs of different voltage types. However, when the inverter charging device and the BOOST charging device are used alone for voltage conversion, the inverter charging device and the BOOST charging device have more electronic components, resulting in a larger size of the photovoltaic intelligent charging control device, and it is impossible to realize DC charging or AC charging through one device. In addition, the charging voltage provided by the BOOST charging device is limited, and the output voltage range cannot be increased, so it needs to be improved. Summary of the invention

[0003] The embodiment of the present invention provides a photovoltaic intelligent charging control device to solve the problems raised in the above background technology.

[0004] According to an embodiment of the present invention, there is provided a photovoltaic intelligent charging control device, comprising: a photovoltaic module, a first conversion module, an energy storage control module, a second conversion module, a central control module, an output control module, a path control module, a wide output control module, an AC / DC charging module and a DC charging module;

[0005] A photovoltaic module, used for photoelectric conversion and outputting first electrical energy;

[0006] A central control module, connected to the first conversion module, the second conversion module, the wide output control module, the output control module and the energy storage control module, for outputting a first inversion signal and a second inversion signal and respectively controlling the inversion work of the first conversion module and the second conversion module, outputting a first adjustment signal and a second adjustment signal and respectively controlling the boost work of the first conversion module and the second conversion module, outputting a first control signal and controlling the wide output control module to perform energy storage and discharge work, controlling the output control module to switch the power transmission path, outputting a charging signal and a discharging signal and controlling the charging and discharging work of the energy storage control module;

[0007] an energy storage control module connected to the photovoltaic module, and configured to store the first electric energy and provide the second electric energy when receiving a charging signal, transmit the first electric energy or the second electric energy to the second conversion module, and discharge and transmit the second electric energy to the photovoltaic module for compensation processing when receiving a discharge signal;

[0008] a second conversion module, connected to the energy storage control module, for inverting the first electric energy or the second electric energy and outputting a sinusoidal voltage of a negative half cycle when receiving a second inversion signal, and for boosting and regulating the first electric energy or the second electric energy and outputting a third electric energy when receiving a second regulation signal;

[0009] a first conversion module, connected to the photovoltaic module and the wide output control module, configured to invert the first electric energy and output a sinusoidal voltage of a positive half cycle upon receiving a first inversion signal, perform voltage step-up regulation on the first electric energy and output a fourth electric energy upon receiving a first regulation signal, and perform superposition processing on the fourth electric energy and the fifth electric energy output by the wide output control module and output a sixth electric energy;

[0010] an output control module, connected to the first conversion module, the second conversion module, the path control module and the AC / DC charging module, and configured to transmit the positive half-cycle sinusoidal voltage and the negative half-cycle sinusoidal voltage to the AC / DC charging module, and stop transmitting the positive half-cycle sinusoidal voltage and the negative half-cycle sinusoidal voltage upon receiving a first control signal, and stop transmitting the negative half-cycle sinusoidal voltage upon receiving a second control signal output by the path control module;

[0011] A channel control module, connected to the central control module, configured to output a second control signal when the first adjustment signal is received and the second adjustment signal is not received;

[0012] a wide output control module, connected to the second conversion module and the DC charging module, and configured to store the third electric energy and control the electric energy transmission state with the DC charging module upon receiving the first control signal, release the stored electric energy and provide the fifth electric energy;

[0013] an AC / DC charging module, connected to the first conversion module, and configured to perform AC charging when receiving a positive half-cycle of the sinusoidal voltage and a negative half-cycle of the sinusoidal voltage, and perform DC charging when receiving a fourth electric energy;

[0014] A DC charging module is connected to the first conversion module and is used to receive the sixth electric energy and perform DC wide voltage charging.

[0015] As a further solution of the present invention: the photovoltaic module includes a photovoltaic cell and a first capacitor; the first conversion module includes a first crystal diode, a first inductor, a first power device, a third power device, a second power device, a second inductor, a second capacitor, a second crystal diode and a third capacitor; the central control module includes a central controller;

[0016] Preferably, the first end of the photovoltaic cell is connected to the first end of the first capacitor and the anode of the first crystal diode, the cathode of the first crystal diode is connected to the collector of the first power device, the collector of the third power device and one end of the second capacitor through the first inductor, the other end of the second capacitor is connected to the emitter of the third power device and the anode of the second crystal diode and connected to the emitter of the first power device, the second end of the first capacitor, the emitter of the second power device and the second end of the photovoltaic cell through the second inductor, the cathode of the second crystal diode is connected to the first end of the third capacitor, the second end of the third capacitor is connected to the collector of the second power device, and the gate of the first power device, the gate of the second power device and the gate of the third power device are respectively connected to the IO1 terminal, IO2 terminal and IO3 terminal of the central controller.

[0017] As a further solution of the present invention: the second conversion module includes a third crystal diode, a third inductor, a fourth power device, a sixth power device, a fourth capacitor, a fourth inductor, a fourth crystal diode and a fifth power device;

[0018] Preferably, the anode of the third crystal diode is connected to the energy storage control module, the cathode of the third crystal diode is connected to the collector of the fourth power device, the collector of the sixth power device and one end of the fourth capacitor through the third inductor, the other end of the fourth capacitor is connected to the anode of the fourth crystal diode and the emitter of the sixth power device and connected to the emitter of the fourth power device, the emitter of the fifth power device and the second end of the first capacitor through the fourth inductor, the cathode of the fourth crystal diode is connected to the second end of the third capacitor, and the collector of the fifth power device is connected to the wide output control module.

[0019] As a further solution of the present invention: the wide output control module includes a first thyristor, a fifth capacitor and a fourth thyristor; the DC charging module includes a DC charging and discharging port;

[0020] Preferably, one end of the first thyristor is connected to the cathode of the fourth crystal diode, the other end of the first thyristor is connected to the collector of the fifth power device and the cathode of the fourth thyristor through the fifth capacitor, the control end of the first thyristor is connected to the IO7 end of the central controller and the control end of the fourth thyristor, the first end of the DC charging port is connected to the first end of the third capacitor, and the anode of the fourth thyristor is connected to the second end of the DC charging port.

[0021] As a further solution of the present invention: the output control module includes a first resistor, a second thyristor, a third thyristor, a second resistor, a first crystal triode, a second crystal triode and a first voltage stabilization source;

[0022] Preferably, one end of the third thyristor is connected to the second end of the third capacitor, the first end of the AC / DC charging port is connected to one end of the second thyristor and the first end of the third capacitor, the other end of the third thyristor is connected to the second end of the AC / DC charging port, the other end of the second thyristor is connected to the collector of the fifth power device, the control end of the third thyristor is connected to the collector of the first transistor and one end of the second resistor is connected to the first voltage stabilizing source through the first resistor, the other end of the second resistor is connected to the collector of the second transistor and the control end of the second thyristor, the emitter of the second transistor and the emitter of the first transistor are both grounded, the base of the first transistor is connected to the IO7 terminal of the central controller, and the base of the second transistor is connected to the path control module.

[0023] As a further solution of the present invention: the path control module includes a first inverter and a first logic gate device;

[0024] Preferably, the input end of the first inverter is connected to the IO6 end of the central controller, the output end of the first inverter is connected to the B end of the first logic gate device, the A end of the first logic gate device is connected to the IO3 end of the central controller, and the Y end of the first logic gate device is connected to the base of the second transistor.

[0025] As a further solution of the present invention: the energy storage control module includes a seventh power device, an eighth power device and a supercapacitor;

[0026] Preferably, the emitter of the seventh power device is connected to the first end of the photovoltaic cell and the anode of the first crystal diode, the collector of the seventh power device is connected to the collector of the eighth power device and the anode of the third crystal diode, the emitter of the eighth power device is connected to the first end of the supercapacitor, the second end of the supercapacitor is connected to the second end of the photovoltaic cell, and the gate of the seventh power device and the gate of the eighth power device are respectively connected to the IO8 terminal and IO9 terminal of the central controller.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the photovoltaic intelligent charging control device of the present invention can control the first conversion module and the second conversion module to respectively provide a positive half-cycle sinusoidal voltage and a negative half-cycle sinusoidal voltage through the central control module, and then provide AC charging power to the AC / DC charging module through the output control module. When only the first conversion module is controlled to perform boost regulation, the path control module will control the output control module to stop transmitting the power output by the second conversion module, and then provide DC charging power to the AC / DC charging module through the output control module. When a wider range of DC charging voltage is required, the central control module controls the energy storage control module to perform auxiliary power supply, and the second conversion module performs boost regulation. The wide output control module receives the power output by the second conversion module and performs superposition processing with the power output by the first conversion module, and outputs a wide range of DC charging power through the DC charging port. AC / DC charging can be achieved through simple components and a wider range of DC power can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 A schematic block diagram of a photovoltaic intelligent charging control device provided in an embodiment of the present invention.

[0030] Figure 2 A circuit diagram of a photovoltaic intelligent charging control device provided in an embodiment of the present invention.

[0031] Figure 3 A circuit diagram of an energy storage control module provided in an embodiment of the present invention.

[0032] Figure 4 A circuit diagram of a path control module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In one embodiment, see Figure 1, a photovoltaic intelligent charging control device, comprising: a photovoltaic module 1, a first conversion module 2, an energy storage control module 3, a second conversion module 4, a central control module 5, an output control module 6, a channel control module 7, a wide output control module 8, an AC / DC charging module 9 and a DC charging module 10;

[0035] Specifically, the photovoltaic module 1 is used for photoelectric conversion and outputting first electrical energy;

[0036] The central control module 5 is connected to the first conversion module 2, the second conversion module 4, the wide output control module 8, the output control module 6 and the energy storage control module 3, and is used to output the first inversion signal and the second inversion signal and respectively control the inversion work of the first conversion module 2 and the second conversion module 4, output the first adjustment signal and the second adjustment signal and respectively control the boost work of the first conversion module 2 and the second conversion module 4, output the first control signal and control the wide output control module 8 to perform energy storage and discharge work, control the output control module 6 to switch the power transmission path, output the charging signal and the discharging signal and control the charging and discharging work of the energy storage control module 3;

[0037] The energy storage control module 3 is connected to the photovoltaic module 1 and is used to store the first electric energy and provide the second electric energy when receiving the charging signal, transmit the first electric energy or the second electric energy to the second conversion module 4, and discharge and transmit the second electric energy to the photovoltaic module 1 for compensation processing when receiving the discharge signal;

[0038] The second conversion module 4 is connected to the energy storage control module 3, and is used to invert the first electric energy or the second electric energy and output a sinusoidal voltage of a negative half cycle when receiving the second inversion signal, and to boost and regulate the first electric energy or the second electric energy and output a third electric energy when receiving the second regulation signal;

[0039] a first conversion module 2, connected to the photovoltaic module 1 and the wide output control module 8, for inverting the first electric energy and outputting a sinusoidal voltage of a positive half cycle upon receiving a first inversion signal, performing voltage step-up regulation on the first electric energy and outputting a fourth electric energy upon receiving a first regulation signal, and superimposing the fourth electric energy with the fifth electric energy output by the wide output control module 8 and outputting a sixth electric energy;

[0040] The output control module 6 is connected to the first conversion module 2, the second conversion module 4, the path control module 7 and the AC / DC charging module 9, and is used to transmit the positive half-cycle sinusoidal voltage and the negative half-cycle sinusoidal voltage to the AC / DC charging module 9, and stop transmitting the positive half-cycle sinusoidal voltage and the negative half-cycle sinusoidal voltage when receiving the first control signal, and stop transmitting the negative half-cycle sinusoidal voltage when receiving the second control signal output by the path control module 7;

[0041] A channel control module 7, connected to the central control module 5, for outputting a second control signal when the first adjustment signal is received and the second adjustment signal is not received;

[0042] a wide output control module 8, connected to the second conversion module 4 and the DC charging module 10, for storing the third electric energy and controlling the electric energy transmission state with the DC charging module 10 upon receiving the first control signal, releasing the stored electric energy and providing the fifth electric energy;

[0043] an AC / DC charging module 9, connected to the first conversion module 2, and configured to perform AC charging when receiving a positive half-cycle of the sinusoidal voltage and a negative half-cycle of the sinusoidal voltage, and perform DC charging when receiving the fourth electric energy;

[0044] The DC charging module 10 is connected to the first conversion module 2 and is used to receive the sixth electric energy and perform DC wide voltage charging.

[0045] In a specific embodiment, the photovoltaic module 1 can adopt a photovoltaic circuit composed of a photovoltaic cell and a capacitor, which can perform photoelectric conversion and electric energy filtering processing; the first conversion module 2 can adopt a first conversion circuit composed of a crystal diode, an IGBT, a capacitor and an inductor, which can perform DC boost control, perform inverter control and output a sinusoidal voltage in the positive half cycle; the energy storage control module 3 can adopt an energy storage control circuit composed of an IGBT and a supercapacitor, which can store and discharge energy, and perform electric energy compensation for the photovoltaic module 1, and provide DC power for the second conversion module 4; the second conversion module 4 can adopt a second conversion circuit composed of a crystal diode, an inductor, an IGBT and a capacitor, which can perform DC boost control, perform inverter control and output a sinusoidal voltage in the negative half cycle; the central control module 5 can adopt a central control circuit composed of a single-chip microcomputer, which integrates many components such as an operator, a controller, a memory and an input and output device to realize signal processing, data storage, module control, timing control and other functions; the output control module 6 can adopt a dual The output control circuit composed of thyristors, resistors, and crystal triodes can control the connection status of the AC / DC charging module 9 and the first conversion module 2 and the second conversion module 4, and then provide DC power or AC power to the AC / DC charging module 9; the above-mentioned path control module 7 can adopt a path control circuit composed of logic gate devices and inverters, and when the first conversion module 2 performs DC boost and the second conversion module 4 does not perform DC boost, the output control module 6 is controlled to disconnect the connection status of the second conversion module 4 from the AC / DC charging module 9; the above-mentioned wide output control module 8 can adopt a wide output control circuit composed of energy storage capacitors, bidirectional thyristors, and unidirectional thyristors, which can store the electric energy output by the second conversion module 4 and perform superposition processing with the electric energy output by the first conversion module 2, and control the connection status with the DC charging module 10; the above-mentioned AC / DC charging module 9 can adopt an AC / DC charging circuit composed of AC / DC charging ports to receive electric energy; the above-mentioned DC charging module 10 can adopt a DC charging circuit composed of DC charging ports to receive a wide range of DC voltages.

[0046] In another embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 4 , the photovoltaic module 1 includes a photovoltaic cell and a first capacitor C1; the first conversion module 2 includes a first crystal diode D1, a first inductor L1, a first power device Q1, a third power device Q3, a second power device Q2, a second inductor L2, a second capacitor C2, a second crystal diode D2 and a third capacitor C3; the central control module 5 includes a central controller U1;

[0047] Specifically, the first end of the photovoltaic cell is connected to the first end of the first capacitor C1 and the anode of the first crystal diode D1, the cathode of the first crystal diode D1 is connected to the collector of the first power device Q1, the collector of the third power device Q3 and one end of the second capacitor C2 through the first inductor L1, the other end of the second capacitor C2 is connected to the emitter of the third power device Q3 and the anode of the second crystal diode D2 and is connected to the emitter of the first power device Q1, the second end of the first capacitor C1, the emitter of the second power device Q2 and the second end of the photovoltaic cell through the second inductor L2, the cathode of the second crystal diode D2 is connected to the first end of the third capacitor C3, the second end of the third capacitor C3 is connected to the collector of the second power device Q2, and the gate of the first power device Q1, the gate of the second power device Q2 and the gate of the third power device Q3 are respectively connected to the IO1 end, the IO2 end and the IO3 end of the central controller U1.

[0048] In a specific embodiment, the first power device Q1, the second power device Q2 and the third power device Q3 can all be IGBTs, wherein when the second power device Q2 is turned on and the third power device Q3 is not turned on, the conduction state of the first power device Q1 is controlled to cooperate with the first crystal diode D1, the first inductor L1, the second capacitor C2, the second crystal diode D2, the second inductor L2 and the third capacitor C3 to output a sinusoidal voltage of the positive half cycle; when the third power device Q3 is turned on, the first power device Q1 cooperates with the first crystal diode D1, the first inductor L1, the second inductor L2, the second crystal diode D2 and the third capacitor C3 to perform DC boost processing; the central controller U1 can select an STM32 microcontroller.

[0049] Further, the second conversion module 4 includes a third crystal diode D3, a third inductor L3, a fourth power device Q4, a sixth power device Q6, a fourth capacitor C4, a fourth inductor L4, a fourth crystal diode D4 and a fifth power device Q5;

[0050] Specifically, the anode of the third crystal diode D3 is connected to the energy storage control module 3, the cathode of the third crystal diode D3 is connected to the collector of the fourth power device Q4, the collector of the sixth power device Q6 and one end of the fourth capacitor C4 through the third inductor L3, the other end of the fourth capacitor C4 is connected to the anode of the fourth crystal diode D4 and the emitter of the sixth power device Q6 and connected to the emitter of the fourth power device Q4, the emitter of the fifth power device Q5 and the second end of the first capacitor C1 through the fourth inductor L4, the cathode of the fourth crystal diode D4 is connected to the second end of the third capacitor C3, and the collector of the fifth power device Q5 is connected to the wide output control module 8.

[0051] In a specific embodiment, the fourth power device Q4, the fifth power device Q5 and the sixth power device Q6 can all be IGBTs. When the fifth power device Q5 is turned on and the sixth power device Q6 is not turned on, the fourth power device Q4 cooperates with the third crystal diode D3, the third inductor L3, the fourth capacitor C4, the fourth crystal diode D4 and the fourth inductor L4 to output a sinusoidal voltage of a negative half cycle. When the sixth power device Q6 is turned on, the fourth power device Q4 cooperates with the third crystal diode D3, the third inductor L3, the fourth inductor L4 and the fourth crystal diode D4 to perform DC boost processing.

[0052] Further, the wide output control module 8 includes a first thyristor S1, a fifth capacitor C5 and a fourth thyristor S4; the DC charging module 10 includes a DC charging and discharging port;

[0053] Specifically, one end of the first thyristor S1 is connected to the cathode of the fourth crystal diode D4, the other end of the first thyristor S1 is connected to the collector of the fifth power device Q5 and the cathode of the fourth thyristor S4 through the fifth capacitor C5, the control end of the first thyristor S1 is connected to the IO7 end of the central controller U1 and the control end of the fourth thyristor S4, the first end of the DC charging port is connected to the first end of the third capacitor C3, and the anode of the fourth thyristor S4 is connected to the second end of the DC charging port.

[0054] In a specific embodiment, the first thyristor S1 can be a bidirectional thyristor, and the fourth thyristor S4 can be a unidirectional thyristor, wherein the first thyristor S1 controls the energy storage and discharge of the fifth capacitor C5, and the fourth thyristor S4 controls the state of the power transmission DC charging module 10.

[0055] Further, the output control module 6 includes a first resistor R1, a second thyristor S2, a third thyristor S3, a second resistor R2, a first transistor V1, a second transistor V2 and a first voltage stabilizing source VCC1;

[0056] Specifically, one end of the third thyristor S3 is connected to the second end of the third capacitor C3, the first end of the AC / DC charging port is connected to one end of the second thyristor S2 and the first end of the third capacitor C3, the other end of the third thyristor S3 is connected to the second end of the AC / DC charging port, the other end of the second thyristor S2 is connected to the collector of the fifth power device Q5, the control end of the third thyristor S3 is connected to the collector of the first transistor V1 and one end of the second resistor R2 is connected to the first voltage regulator source VCC1 through the first resistor R1, the other end of the second resistor R2 is connected to the collector of the second transistor V2 and the control end of the second thyristor S2, the emitter of the second transistor V2 and the emitter of the first transistor V1 are both grounded, the base of the first transistor V1 is connected to the IO7 terminal of the central controller U1, and the base of the second transistor V2 is connected to the path control module 7.

[0057] In a specific embodiment, the second thyristor S2 and the third thyristor S3 can both be bidirectional thyristors, the third thyristor S3 controls the connection state between the AC / DC charging module 9 and the first conversion module 2, and the second thyristor S2 controls the connection state between the second conversion module 4 and the AC / DC charging module 9; the second transistor V2 and the first transistor V1 can both be NPN transistors.

[0058] Furthermore, the path control module 7 includes a first inverter INV1 and a first logic gate device J1;

[0059] Specifically, the input end of the first inverter INV1 is connected to the IO6 end of the central controller U1, the output end of the first inverter INV1 is connected to the B end of the first logic gate device J1, the A end of the first logic gate device J1 is connected to the IO3 end of the central controller U1, and the Y end of the first logic gate device J1 is connected to the base of the second transistor V2.

[0060] In a specific embodiment, the first inverter INV1 may use a NOT gate chip, and the first logic gate device J1 may use an AND gate chip, which may control the output control module 6 to disconnect the second conversion module 4 from the AC / DC charging module 9 when the first conversion module 2 is working and the second conversion module 4 is not working.

[0061] Further, the energy storage control module 3 includes a seventh power device Q7, an eighth power device Q8 and a supercapacitor;

[0062] Specifically, the emitter of the seventh power device Q7 is connected to the first end of the photovoltaic cell and the anode of the first crystal diode D1, the collector of the seventh power device Q7 is connected to the collector of the eighth power device Q8 and the anode of the third crystal diode D3, the emitter of the eighth power device Q8 is connected to the first end of the supercapacitor, the second end of the supercapacitor is connected to the second end of the photovoltaic cell, and the gate of the seventh power device Q7 and the gate of the eighth power device Q8 are respectively connected to the IO8 terminal and IO9 terminal of the central controller U1.

[0063] In a specific embodiment, both the seventh power device Q7 and the eighth power device Q8 may be IGBTs, wherein the seventh power device Q7 performs discharge control, and the eighth power device Q8 performs charge control.

[0064] In a photovoltaic intelligent charging control device of this embodiment, the photovoltaic cell performs photoelectric conversion, and the first capacitor C1 performs filtering processing. When AC charging is required, the central controller U1 outputs a first inverter signal, which is composed of a high-level signal output by the IO2 terminal of the central controller U1 and a drive signal output by the IO1 terminal of the central controller U1, so that the IO2 terminal of the central controller U1 controls the second power device Q2 to turn on, and the IO1 terminal of the central controller U1 drives the first power device Q1 to turn on, and then cooperates with the first crystal diode D1, the first inductor L1, the second inductor L2, the second inductor L2 and the second crystal diode D2 to conduct the electric energy output by the photovoltaic cell. The third capacitor C3 performs filtering and provides a positive half-cycle sinusoidal voltage to the AC / DC charging port. Meanwhile, the central controller U1 stops outputting the first inverter signal and outputs the second inverter signal. Similarly, the second inverter signal is composed of a high-level signal output from the IO5 terminal of the central controller U1 and a drive signal output from the IO4 terminal of the central controller U1. Then, the fourth power device Q4 cooperates with the third crystal diode D3, the third inductor L3, the fourth capacitor C4, the fourth inductor L4 and the fourth crystal diode D4 to process the electric energy provided by the photovoltaic cell transmitted by the seventh power device Q7 and provide a negative half-cycle sinusoidal voltage to the AC / DC charging port through the second thyristor S2.When DC charging is required, the central controller U1 can output a first adjustment signal, which can be composed of a high-level signal output from the IO2 terminal of the central controller U1, a high-level signal output from the IO3 terminal of the central controller U1, and an adjustment signal output from the IO1 terminal of the central controller U1, so that the first power device Q1 cooperates with the first crystal diode D1, the first inductor L1, the third power device Q3, the second inductor L2 and the second crystal diode D2 to perform a boost process, and at this time the second conversion module 4 does not work, so that the Y end of the first logic gate device J1 controls the second crystal triode V2 to turn on, the second thyristor S2 to turn off, and the boosted DC power is transmitted to the AC / DC charging port through the third thyristor S3. When a wider range of DC voltage is required, the IO7 terminal of the central controller U1 outputs a first control signal to control the first thyristor S1, the fourth thyristor S4 and the first crystal triode V1 to turn on, and the second thyristor S2 and The third thyristor S3 is turned off, and the central controller U1 outputs the first adjustment signal and the second adjustment signal at the same time. Similarly, the second adjustment signal is composed of the high-level signal output by the IO5 terminal of the central controller U1, the high-level signal output by the IO6 terminal of the central controller U1, and the adjustment signal output by the IO4 terminal of the central controller U1, and then controls the second conversion module 4 to perform a boost process. The boosted electric energy is stored in the fifth capacitor C5. The electric energy stored in the fifth capacitor C5 is superimposed with the electric energy stored in the third capacitor C3, and then a wider range of DC voltage is provided for the DC charging port. In the energy storage control module 3, the IO9 terminal of the central controller U1 controls the eighth power device Q8 to be turned on, and the supercapacitor can be controlled to store the electric energy provided by the photovoltaic cell. When the first conversion module 2 is powered, if the photovoltaic cell is unstable, the IO8 terminal of the central controller U1 controls the seventh power device Q7 to be turned on, and controls the supercapacitor to compensate for the photovoltaic electric energy.

[0065] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0066] 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 intelligent charging control device, characterized in that: The photovoltaic intelligent charging control device comprises: a photovoltaic module, a first conversion module, an energy storage control module, a second conversion module, a central control module, an output control module, a channel control module, a wide output control module, an AC / DC charging module and a DC charging module; The photovoltaic module is used for photoelectric conversion and outputting the first electric energy; The central control module is connected to the first conversion module, the second conversion module, the wide output control module, the output control module and the energy storage control module, and is used to output a first inversion signal and a second inversion signal and respectively control the inversion work of the first conversion module and the second conversion module, output a first adjustment signal and a second adjustment signal and respectively control the boost work of the first conversion module and the second conversion module, output a first control signal and control the wide output control module to perform energy storage and discharge work, control the output control module to switch the power transmission path, output a charging signal and a discharging signal and control the charging and discharging work of the energy storage control module; The energy storage control module is connected to the photovoltaic module and is used to store the first electric energy and provide the second electric energy when receiving a charging signal, transmit the first electric energy or the second electric energy to the second conversion module, and discharge and transmit the second electric energy to the photovoltaic module for compensation processing when receiving a discharge signal; The second conversion module is connected to the energy storage control module, and is used to invert the first electric energy or the second electric energy and output a sinusoidal voltage of a negative half cycle when receiving a second inversion signal, and to boost and regulate the first electric energy or the second electric energy and output a third electric energy when receiving a second regulation signal; The first conversion module is connected to the photovoltaic module and the wide output control module, and is used to invert the first electric energy and output a sinusoidal voltage of a positive half cycle when receiving a first inversion signal, and to boost and regulate the first electric energy and output a fourth electric energy when receiving a first regulation signal, and to superimpose the fourth electric energy with the fifth electric energy output by the wide output control module and output a sixth electric energy; The output control module is connected to the first conversion module, the second conversion module, the path control module and the AC / DC charging module, and is used to transmit the positive half-cycle sinusoidal voltage and the negative half-cycle sinusoidal voltage to the AC / DC charging module, and when receiving a first control signal, stops transmitting the positive half-cycle sinusoidal voltage and the negative half-cycle sinusoidal voltage, and when receiving a second control signal output by the path control module, stops transmitting the negative half-cycle sinusoidal voltage; The passage control module is connected to the central control module and is used to output a second control signal when the first adjustment signal is received and the second adjustment signal is not received; The wide output control module is connected to the second conversion module and the DC charging module, and is used to store the third electric energy and control the electric energy transmission state with the DC charging module when receiving the first control signal, release the stored electric energy and provide the fifth electric energy; The AC / DC charging module is connected to the first conversion module and is used to perform AC charging when receiving the positive half-cycle sinusoidal voltage and the negative half-cycle sinusoidal voltage, and perform DC charging when receiving the fourth electric energy; The DC charging module is connected to the first conversion module, and is used to receive the sixth electric energy and perform DC wide voltage charging.

2. A photovoltaic intelligent charging control device according to claim 1, characterized in that: The photovoltaic module includes a photovoltaic cell and a first capacitor; the first conversion module includes a first crystal diode, a first inductor, a first power device, a third power device, a second power device, a second inductor, a second capacitor, a second crystal diode and a third capacitor; the central control module includes a central controller; The first end of the photovoltaic cell is connected to the first end of the first capacitor and the anode of the first crystal diode, the cathode of the first crystal diode is connected to the collector of the first power device, the collector of the third power device and one end of the second capacitor through the first inductor, the other end of the second capacitor is connected to the emitter of the third power device and the anode of the second crystal diode and is connected to the emitter of the first power device, the second end of the first capacitor, the emitter of the second power device and the second end of the photovoltaic cell through the second inductor, the cathode of the second crystal diode is connected to the first end of the third capacitor, the second end of the third capacitor is connected to the collector of the second power device, and the gate of the first power device, the gate of the second power device and the gate of the third power device are respectively connected to the IO1 end, the IO2 end and the IO3 end of the central controller.

3. A photovoltaic intelligent charging control device according to claim 2, characterized in that: The second conversion module includes a third crystal diode, a third inductor, a fourth power device, a sixth power device, a fourth capacitor, a fourth inductor, a fourth crystal diode and a fifth power device; The anode of the third crystal diode is connected to the energy storage control module, the cathode of the third crystal diode is connected to the collector of the fourth power device, the collector of the sixth power device and one end of the fourth capacitor through the third inductor, the other end of the fourth capacitor is connected to the anode of the fourth crystal diode and the emitter of the sixth power device and connected to the emitter of the fourth power device, the emitter of the fifth power device and the second end of the first capacitor through the fourth inductor, the cathode of the fourth crystal diode is connected to the second end of the third capacitor, the collector of the fifth power device is connected to the wide output control module, and the gate of the fourth power device, the gate of the fifth power device and the gate of the sixth power device are respectively connected to the IO4 end, the IO5 end and the IO6 end of the central controller.

4. A photovoltaic intelligent charging control device according to claim 3, characterized in that: The wide output control module includes a first thyristor, a fifth capacitor and a fourth thyristor; the DC charging module includes a DC charging and discharging port; One end of the first thyristor is connected to the cathode of the fourth crystal diode, the other end of the first thyristor is connected to the collector of the fifth power device and the cathode of the fourth thyristor through the fifth capacitor, the control end of the first thyristor is connected to the IO7 end of the central controller and the control end of the fourth thyristor, the first end of the DC charging port is connected to the first end of the third capacitor, and the anode of the fourth thyristor is connected to the second end of the DC charging port.

5. A photovoltaic intelligent charging control device according to claim 4, characterized in that: The output control module includes a first resistor, a second thyristor, a third thyristor, a second resistor, a first crystal triode, a second crystal triode and a first voltage stabilization source; One end of the third thyristor is connected to the second end of the third capacitor, the first end of the AC / DC charging port is connected to one end of the second thyristor and the first end of the third capacitor, the other end of the third thyristor is connected to the second end of the AC / DC charging port, the other end of the second thyristor is connected to the collector of the fifth power device, the control end of the third thyristor is connected to the collector of the first transistor and one end of the second resistor and is connected to the first voltage stabilizing source through the first resistor, the other end of the second resistor is connected to the collector of the second transistor and the control end of the second thyristor, the emitter of the second transistor and the emitter of the first transistor are both grounded, the base of the first transistor is connected to the IO7 terminal of the central controller, and the base of the second transistor is connected to the path control module.

6. A photovoltaic intelligent charging control device according to claim 5, characterized in that: The path control module includes a first inverter and a first logic gate device; The input end of the first inverter is connected to the IO6 end of the central controller, the output end of the first inverter is connected to the B end of the first logic gate device, the A end of the first logic gate device is connected to the IO3 end of the central controller, and the Y end of the first logic gate device is connected to the base of the second transistor.

7. A photovoltaic intelligent charging control device according to claim 3, characterized in that: The energy storage control module includes a seventh power device, an eighth power device and a supercapacitor; The emitter of the seventh power device is connected to the first end of the photovoltaic cell and the anode of the first crystal diode, the collector of the seventh power device is connected to the collector of the eighth power device and the anode of the third crystal diode, the emitter of the eighth power device is connected to the first end of the supercapacitor, the second end of the supercapacitor is connected to the second end of the photovoltaic cell, and the gate of the seventh power device and the gate of the eighth power device are respectively connected to the IO8 terminal and IO9 terminal of the central controller.

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