Photovoltaic direct-current power supply customization module

Abstract

The utility model relates to the technical field of photovoltaic direct-current power supply customization modules, and discloses a photovoltaic direct-current power supply customization module which comprises a base mechanism, the base mechanism comprises a base body, a circuit board mechanism is fixedly arranged in the middle of the upper end of the base body, and the circuit board mechanism comprises a ceramic substrate and a first circuit module. One side of the first circuit module is fixedly connected with a second circuit module through a circuit, and one side of the second circuit module is fixedly connected with a third circuit module through a circuit. According to the utility model, the step-up circuit and the step-down circuit are arranged on the PFC circuit and the H-bridge circuit in a staggered manner, three circuit modules are integrated, the device is small in size, low in cost, convenient and rapid to install, convenient to implement and convenient to use, the base mechanism facilitates threaded installation of the device, and the base body facilitates installation and fixation of the circuit board mechanism. The mounting holes are favorable for being matched with first screws for use and fixing the base mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic direct current power supply customized modules, in particular to a photovoltaic direct current power supply customized module. Background Art

[0002] Photovoltaic DC power supply is the core component of solar power generation system. It converts solar energy into electrical energy by using the photovoltaic effect. Photovoltaic cells (solar cells) are composed of two layers of different semiconductor materials to form a PN junction. When sunlight shines on the cell, the energy of photons excites electrons to jump from the valence band to the conduction band, forming free electron and hole pairs. These carriers are separated under the action of the electric field of the PN junction, and electrons move to the negative electrode and holes move to the positive electrode, thereby generating photocurrent. This current can be derived through an external circuit for power supply or storage in a battery. The core components of photovoltaic DC power supply include photovoltaic cells, controllers, inverters and energy storage devices and modules of the same package platform for different circuits.

[0003] Most of the existing photovoltaic DC power supplies are equipped with three or more modules of the same packaging platform with different circuits. They are large in size, large in parasitic inductance, and high in cost, and cannot meet people's needs.

[0004] Therefore, those skilled in the art provide a photovoltaic DC power supply customized module to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a photovoltaic DC power supply customized module is proposed. The device is provided with a boost and buck circuit interlaced on the PFC and H-bridge circuit, an integrated module, and has a reduced volume, reduced cost, and convenient installation. The device uses circuit module No. 1, circuit module No. 2 and circuit module No. 3 in conjunction with the H-bridge circuit and interlaced PFC. It is an electronic circuit, which consists of four switching elements, which are usually transistors or MOSFETs, distributed on four arms of the circuit. Its main function is to control the current direction of the load (usually a DC motor) connected in the middle, thereby realizing the forward and reverse rotation and speed regulation of the load. By reasonably controlling the conduction and closing of the switching elements, the H-bridge circuit can make the voltage at both ends of the load inverted, thereby changing the direction of the current. PFC adjusts the phase and shape of the input current to make the phase difference between the input current and the voltage as small as possible, thereby improving the power factor.

[0006] To achieve the above object, the utility model provides the following technical solutions: a photovoltaic DC power supply customized module, including a base mechanism, the base mechanism includes a base body, and a circuit board mechanism is fixedly arranged at the middle position of the upper end of the base body;

[0007] The circuit board structure includes a ceramic substrate and a No. 1 circuit module. One side of the No. 1 circuit module is fixedly connected to the No. 2 circuit module via a circuit, and one side of the No. 2 circuit module is fixedly connected to the No. 3 circuit module via a circuit.

[0008] Furthermore, a rectifier diode is fixedly arranged at one side of the upper end of the ceramic substrate, and an inverter IGBT is fixedly arranged at the middle of the upper end of the ceramic substrate.

[0009] Furthermore, a thermistor is fixedly arranged at the middle of the upper end of the ceramic substrate close to the other side, and a plurality of electronic components are fixedly arranged at the upper end of the ceramic substrate.

[0010] Furthermore, a mounting groove is provided in the middle of the upper end of the base body, and a ceramic substrate is fixedly arranged in the middle of the mounting groove by adhesive.

[0011] Furthermore, mounting holes are provided at four corners of the upper end of the base body.

[0012] Furthermore, the internal threads of the plurality of mounting holes are provided with No. 1 screws.

[0013] Furthermore, number 2 screws are threadedly arranged at the four corners in the middle of the upper end of the base body.

[0014] Furthermore, the circuit module No. 1, the circuit module No. 2 and the circuit module No. 3 are all connected through circuits and are electrically connected.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model proposes a customized photovoltaic DC power supply module. Most of the existing photovoltaic DC power supplies are equipped with 3 or more modules of the same packaging platform with different circuits, which are large in size, large in parasitic inductance, and high in cost, and cannot meet people's needs. The device integrates the three circuit modules into one module by arranging a boost and a buck circuit interlaced on the PFC and H-bridge circuits. The device is small in size, low in cost, quick and easy to install, easy to implement, and easy to use.

[0017] 2. The utility model proposes a customized photovoltaic DC power supply module. This device uses circuit module No. 1, circuit module No. 2 and circuit module No. 3 in conjunction with an H-bridge circuit and staggered PFC. It is an electronic circuit composed of four switching elements, which are usually transistors or MOSFETs distributed on the four arms of the circuit. Its main function is to control the current direction of the load (usually a DC motor) connected in the middle, thereby realizing the forward and reverse rotation and speed regulation of the load. By reasonably controlling the conduction and closing of the switching elements, the H-bridge circuit can reverse the voltage at both ends of the load, thereby changing the direction of the current. PFC adjusts the phase and shape of the input current to make the phase difference between the input current and the voltage as small as possible, thereby improving the power factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric schematic diagram of the utility model;

[0019] Figure 2 It is a top view schematic diagram of the utility model;

[0020] Figure 3 It is a bottom view schematic diagram of the utility model;

[0021] Figure 4 It is a circuit diagram of the utility model.

[0022] Legend:

[0023] 1. Base mechanism; 2. Circuit board mechanism; 101. Base body; 102. No. 1 screw; 103. No. 2 screw; 104. Mounting hole; 105. Mounting slot; 201. Ceramic substrate; 202. Rectifier diode; 203. Electronic component; 204. Inverter IGBT; 205. Thermistor; 206. No. 1 circuit module; 207. No. 2 circuit module; 208. No. 3 circuit module. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1-3The utility model provides an embodiment: a photovoltaic DC power supply customized module, including a base mechanism 1, the base mechanism 1 includes a base body 101, a mounting groove 105 is opened in the middle of the upper end of the base body 101, a ceramic substrate 201 is fixed in the middle of the mounting groove 105 by adhesive, mounting holes 104 are opened at the four corners of the upper end of the base body 101, and the internal threads of the multiple mounting holes 104 are provided with No. 1 screws 102, and the middle of the upper end of the base body 101 is threadedly provided with No. 2 screws 103 near the four corners.

[0026] Specifically, the setting of the base mechanism 1 is conducive to the threaded installation of the device by cooperating with the mounting hole 104 and the No. 1 screw 102 of the circuit board, and is conducive to the threaded fixed installation of the device. The base body 101 is conducive to the adhesive fixation of the ceramic substrate 201, and is conducive to the threaded fixed installation of the entire device. The installation and fixation of the circuit board mechanism 2, the mounting groove 105 is conducive to the adhesive fixation of the ceramic substrate 201, and is conducive to the fixed installation of the circuit board. The mounting hole 104 is conducive to the use with the No. 1 screw 102, which is conducive to fixing the base mechanism 1.

[0027] Reference Figure 2 , Figure 4 A circuit board mechanism 2 is fixedly arranged at the middle position of the upper end of the base body 101, and the circuit board mechanism 2 includes a ceramic substrate 201 and a circuit module No. 1 206. One side of the circuit module No. 1 206 is fixedly connected to the circuit module No. 2 207 through a circuit, and one side of the circuit module No. 2 207 is fixedly connected to the circuit module No. 3 208 through a circuit. A rectifier diode 202 is fixedly arranged at one side of the upper end of the ceramic substrate 201, an inverter IGBT 204 is fixedly arranged at the middle position of the upper end of the ceramic substrate 201, a thermistor 205 is fixedly arranged at the middle position of the upper end of the ceramic substrate 201 on the other side, and a plurality of electronic components 203 are fixedly arranged at the upper end of the ceramic substrate 201. The circuit module No. 1 206, the circuit module No. 2 207 and the circuit module No. 3 208 are all connected through circuits and are electrically connected.

[0028] Specifically, the arrangement of the circuit board mechanism 2 is conducive to the connection and installation of the first circuit module 206, the second circuit module 207 and the third circuit module 208. The ceramic substrate 201 is conducive to being used as a circuit substrate. The device integrates the three circuit modules into one module by arranging a boost and a buck circuit interlaced on the PFC and H-bridge circuits. The device is small in size, low in cost, easy and quick to install, easy to implement and easy to use. The rectifier diode 202 is a semiconductor device mainly used to convert alternating current AC into direct current DC. It has unidirectional conductivity, that is, it can conduct current when forward biased, and prevent current from passing when reverse biased. The inverter IGBT204 refers to an insulated gate bipolar transistor used in the inverter. It has the advantages of high input impedance, low driving power requirement, fast switching capability and high operating frequency, and is very suitable for use in high-power power electronic systems. The thermistor 205 decreases with increasing temperature.

[0029] Working principle: When the device is used, the circuit module No. 1 206, the circuit module No. 207 and the circuit module No. 3 208 of the device are connected and installed on the ceramic substrate 201 respectively. The ceramic substrate 201 is adhered to the base body 101 by adhesive, and then the electronic component 203, the inverter IGBT 204 and the thermistor 205 are fixed on the ceramic substrate 201, and then the base body 101 is threadedly fixed and installed by the No. 1 screw 102. The device integrates the three circuit modules into one module by arranging the boost and buck circuits interlaced on the PFC and H-bridge circuits, and the device is small in size, low in cost, quick and easy to install, easy to implement and easy to use.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic DC power supply customized module, comprising a base mechanism (1), characterized in that: The base mechanism (1) comprises a base body (101), and a circuit board mechanism (2) is fixedly arranged at the middle position of the upper end of the base body (101); The circuit board mechanism (2) comprises a ceramic substrate (201) and a first circuit module (206); one side of the first circuit module (206) is fixedly connected to a second circuit module (207) via a circuit; and one side of the second circuit module (207) is fixedly connected to a third circuit module (208) via a circuit.

2. A photovoltaic DC power supply customized module according to claim 1, characterized in that: A rectifier diode (202) is fixedly arranged at one side of the upper end of the ceramic substrate (201), and an inverter IGBT (204) is fixedly arranged at the middle of the upper end of the ceramic substrate (201).

3. A photovoltaic DC power supply customized module according to claim 1, characterized in that: A thermistor (205) is fixedly arranged at the middle of the upper end of the ceramic substrate (201) close to the other side, and a plurality of electronic components (203) are fixedly arranged at the upper end of the ceramic substrate (201).

4. A photovoltaic DC power supply customized module according to claim 1, characterized in that: A mounting groove (105) is provided in the middle of the upper end of the base body (101), and a ceramic substrate (201) is fixedly arranged in the middle of the mounting groove (105) by means of adhesive.

5. A photovoltaic DC power supply customized module according to claim 1, characterized in that: The four corners of the upper end of the base body (101) are provided with mounting holes (104).

6. A photovoltaic DC power supply customized module according to claim 5, characterized in that: The plurality of mounting holes (104) are internally threaded with No. 1 screws (102).

7. A photovoltaic DC power supply customized module according to claim 1, characterized in that: The middle part of the upper end of the base body (101) is threadedly provided with No. 2 screws (103) near the four corners.

8. The photovoltaic DC power customized module according to claim 1, characterized in that: The first circuit module (206), the second circuit module (207) and the third circuit module (208) are all connected via circuits and are electrically connected.

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