CN106449833A - Terminal for photovoltaic module connector and connector - Google Patents

Abstract

The present invention proposes a terminal for a photovoltaic module connector, which is used for a module connector of a photovoltaic system with a voltage output of 1500V and above. The terminal for the connector includes a pin and a socket, and the pin and the socket include a riveting part. The connection and fixing part and the insertion part, the riveted part is fixedly connected with the plastic shell of the connector, and the connection and fixing part is provided with a plurality of wedge-shaped protrusion structures, which are fixed with the locking structure inside the connector. The length of the riveting part of the insertion pin is 4.0±0.5mm, and the total length is 24.8±1mm; the length of the riveting part of the socket is 4.0±0.5mm, and the total length is 28.76±1mm. The present invention also provides a connector with the above terminals. On the basis of meeting the safety requirements of electrical clearance and creepage distance, the connector has small resistance and low heat generation during operation, which prevents the connector from being burned due to high temperature during operation and thus causing more serious safety accidents of the photovoltaic system.

Description

Terminal and connector for photovoltaic module connector

technical field

The invention relates to the technical field of electrical connectors, in particular to a terminal for a connector of a photovoltaic system component applied to a voltage output of 1500V and above and a connector with the terminal.

Background technique

With the global climate change and the increasingly severe environmental pollution caused by traditional fossil energy, the green and renewable energy industry has developed rapidly in the past ten years. Solar energy is a renewable resource, and the solar cell technology that uses the photovoltaic effect to generate electricity has attracted worldwide attention. Solar cells are made of materials that can produce photovoltaic effects, such as silicon, gallium arsenide, indium selenide copper and other materials, which can convert light energy into electrical energy. At present, photovoltaic modules composed of multiple solar cells are widely used to build various photovoltaic power generation systems, or used as building curtain walls to build energy-saving and environment-friendly buildings.

The photovoltaic power generation system needs to connect multiple photovoltaic modules to each other through cables to form a photovoltaic module array and then output a large voltage to the outside, and the electrical connector is an indispensable device for the interconnection of photovoltaic modules. The male plug and female plug of the connector There are conductive copper terminals in the electrical connector. At present, the design of the copper terminals in the electrical connector is mainly based on the requirements of electrical safety, that is, to meet a certain electrical clearance and creepage distance, and lack other details. consider. For photovoltaic module connectors used for 1500V and above or even higher voltage output, it is also necessary to consider the safety risk caused by the heat of the connector itself. For example, when the copper terminal in the connector is too long, its resistance will increase. If it increases, more heat will be generated, which will easily burn out the connector, which will affect the safe use of the entire photovoltaic module and photovoltaic array.

Contents of the invention

In view of the above-mentioned precautions for the use of photovoltaic module connectors in applications, the purpose of the present invention is to provide a terminal for photovoltaic system module connectors with a voltage output of 1500V and above and a connector with this terminal, which can meet electrical requirements. Safety requirements, and at the same time, it can avoid excessive heat of the connector and cause the connector to burn out.

In order to achieve the purpose of the present invention, a terminal for a photovoltaic module connector of the present invention is used for a module connector of a photovoltaic system with a voltage output of 1500V and above. The terminal for the connector includes a pin and a socket, and the pin It includes a riveting part, a connection fixing part and a plugging part. The riveting part is fixedly connected with the plastic shell of the connector. The connection fixing part is provided with a plurality of wedge-shaped protrusion structures, which are locked with the pins inside the connector. The buckle structure is fixed, and the inserting part is inserted into the socket; the socket includes a riveting part, a connection fixing part and an insertion part, the riveting part is fixedly connected with the plastic shell of the connector, and the connection fixing part There are a plurality of wedge-shaped protrusion structures on it, which are fixed with the socket lock structure inside the connector. The insertion part is inserted into the insertion part of the pin. There is a drum spring fixing structure; wherein, the length of the riveted part of the pin is 4.0±0.5mm, and the total length is 24.8±1mm; the length of the riveted part of the socket is 4.0±0.5mm, and the total length is 28.76±1mm.

Preferably, the total length of the connection fixing part of the pin and the socket part is 20.8 ± 1 mm, and the distance from the wedge-shaped protrusion structure to the end of the socket part is 17.1 ± 1 mm; the wedge-shaped protrusion structure of the socket The distance from the end of the socket part is 20.76±1mm, and the distance from the drum spring fixing structure to the end of the socket part is 8.8±1mm.

More preferably, the length of the wedge-shaped protrusion structure of the pin is 1.5±0.2mm; the length of the wedge-shaped protrusion structure of the socket is 2.2±0.2mm, and the length of the drum spring fixing structure is 1.5±0.2mm.

According to another object of the present invention, the present invention proposes a module connector applied to a photovoltaic system with a voltage output of 1500V and above with the above-mentioned terminal structure, the connector includes a female plug connector and a male plug connector, the The female plug connector includes a nut, a female plug housing threadedly connected with the nut, and a plug sleeve arranged inside the female plug housing. The riveted part of the plug sleeve is riveted with the washer and fixed with the nut by a hook The connection and fixing part of the plug sleeve is fastened with the plug sleeve lock, and the plug sleeve lock is fixed with the female plug housing; the male plug connector includes a nut, and the male plug housing is threadedly connected with the nut, and is arranged on the male socket. Insert the pin inside the housing, the riveting part of the pin is riveted with the washer and fixed by the hook and the nut, the connection and fixing part of the pin is buckled with the pin lock, and the pin lock is connected with the male plug The housing is fixed; there is an O-ring between the male connector and the female connector.

The photovoltaic module connector terminal of the present invention is used in module connectors, and is suitable for photovoltaic module connection of photovoltaic systems with voltage output of 1500V and above. On the basis of meeting the safety requirements of electrical clearance and creepage distance, the male plug terminal The size of each part of the terminal and the female terminal is optimized to control the resistance value of the terminal itself, so as to prevent the high temperature generated during operation, which will cause the connector to burn out and cause more serious photovoltaic system safety accidents.

Description of drawings

The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings. in:

FIG. 1A is a schematic structural view of a pin (male plug terminal) of a terminal for a photovoltaic module connector of the present invention;

FIG. 1B is a schematic diagram of the front structure of the pin shown in FIG. 1A;

Fig. 2A is a schematic structural diagram of a plug sleeve (female plug terminal) of a terminal for a photovoltaic module connector of the present invention;

FIG. 2B is a schematic front view of the socket shown in FIG. 1A;

Figure 2C shows the structural representation of the drum spring;

FIG. 3 is a schematic diagram of an exploded structure of a photovoltaic module connector (male plug+female plug) of the present invention.

detailed description

The structural features and advantages of the present invention are described in detail below in conjunction with the accompanying drawings.

The photovoltaic module connector includes a male plug and a female plug. Therefore, the terminal for the photovoltaic module connector of the present invention also includes a male plug terminal, which is a pin, and a female plug terminal, which is a plug sleeve. Referring to FIG. 1A of an embodiment of the present invention Schematic diagram of the structure of the pin 24 (male terminal) of the photovoltaic module connector terminal. The pin 24 includes a riveting part 241, a connection fixing part 242 and a plugging part 243. The riveting part 241 is connected to the plastic shell of the connector. Fixed connection, the connection fixing part 242 is provided with a plurality of wedge-shaped protrusion structures 2421, which are fixed with the pin lock structure inside the connector, and the insertion part 243 is inserted into the socket (female terminal); refer to FIG. 2A is a schematic structural diagram of a socket 24 (female socket terminal) of a terminal for a photovoltaic module connector according to an embodiment of the present invention. The socket 14 includes a riveting portion 141, a connection fixing portion 142 and a plugging portion 143. The riveting part 141 is fixedly connected with the plastic shell of the connector, and the connection fixing part 142 is provided with a plurality of wedge-shaped protrusion structures 1421, which are fixed with the plug-in sleeve locking structure inside the connector. The plug-in part 143 It is plugged with the insertion part 243 of the pin 24 (male terminal), and a drum spring is arranged inside (see Figure 2C), and a drum spring fixing structure 1431 is provided on the insertion part 143; referring to Figure 1B, the pin The length D1 of the riveting part 2401 of 24 is 4.0±0.5mm, and the total length D4 is 24.8±1mm; referring to FIG. 2B, the length L1 of the riveting part 141 of the socket 14 is 4.0±0.5mm, and the total length L3 of the socket 14 is 28.76±1.5mm. In another preferred embodiment, the total length D2 of the connection fixing part 242 and the insertion part 243 of the pin 24 is 20.8±1 mm, and the distance D3 from the wedge-shaped fixing part 2421 to the end of the insertion part 243 is 17.1 mm. ±1mm; the distance L2 from the wedge-shaped protrusion structure 1421 of the socket 14 to the end of the socket 143 is 20.76±1mm, and the distance L4 from the drum spring fixing structure 1431 to the end of the socket 143 is 8.8±1mm .

In yet another preferred embodiment, the length D5 of the wedge-shaped protrusion structure of the pin is 1.5±0.2mm; the length L6 of the wedge-shaped protrusion structure of the socket is 2.2±0.2mm, and the length of the drum spring fixing structure The length L5 is 1.5±0.2mm.

Referring to FIG. 3 , a structural schematic diagram of a module connector applied to a photovoltaic system with a voltage output of 1500V and above with the above-mentioned terminal structure of the present invention, the connector includes a female plug connector and a male plug connector. The female plug connector includes a nut 10, a female plug housing 12 threadedly connected with the nut 10, a female plug terminal (sleeve) 14 arranged inside the female plug housing 12, and the riveted part of the plug sleeve 14 is connected to the The washer 104 is riveted and fixed with the nut 10 through the hook 102, the connection and fixing part of the socket 14 is fastened with the socket lock 106, and the socket lock 106 is fixed with the female socket housing 12; the male plug connection The device includes a nut 20, a male housing 22 threadedly connected with the nut 20, a male terminal (pin) 24 arranged inside the male housing 22, the riveting portion of the pin 24 is riveted with the washer 204 and The hook 202 is fixed with the nut 20, the connection and fixing part of the pin 24 is fastened with the pin lock 206, and the pin lock 206 is fixed with the male housing 22; the male connector and the female plug There is an O-ring 30 between the connectors.

The terminal of the component connector of the photovoltaic system applied to the voltage output of 1500V and above of the present invention, on the basis of meeting the safety requirements of the electrical clearance and the creepage distance, through a large number of experiments and tests, the male plug terminal and the female plug The size of each part of the terminal has been optimized to control the resistance value of the terminal itself, so as to prevent the high temperature generated during operation, which will cause the connector to burn out and cause more serious photovoltaic system safety accidents.

The present invention is not limited to the described embodiment, and those skilled in the art can still make some amendments or changes without departing from the spirit of the present invention, that is, within the disclosed scope, so the protection scope of the present invention is defined by the claims range prevails.

Claims (4)

1. A terminal for a photovoltaic module connector, which is used for a module connector of a photovoltaic system with a voltage output of 1500V and above, characterized in that the terminal for the connector includes a pin and a socket, and the pin includes a riveting part, The connection fixing part and the insertion part, the riveting part is fixedly connected with the plastic shell of the connector, and the connection fixing part is provided with a plurality of wedge-shaped protrusion structures, which are fixed with the pin lock structure inside the connector, The insertion part is inserted into the socket; the socket includes a riveting part, a connection fixing part and an insertion part, the riveting part is fixedly connected with the plastic shell of the connector, and the connection fixing part is provided with multiple A wedge-shaped protruding structure, which is fixed with the socket lock structure inside the connector, the insertion part is inserted into the insertion part of the pin, and a drum spring is arranged inside, and a drum spring is fixed on the insertion part. Structure; wherein, the length of the riveting part of the pin is 4.0±0.5mm, and the total length is 24.8±1mm; the length of the riveting part of the socket is 4.0±0.5mm, and the total length is 28.76±1mm. 2. A terminal for a photovoltaic module connector according to claim 1, characterized in that the total length of the connection fixing part of the pin and the insertion part is 20.8±1 mm, and the wedge-shaped protrusion structure reaches the insertion part The distance from the end is 17.1±1mm; the distance from the wedge-shaped protrusion structure of the socket to the end of the socket is 20.76±1mm, and the distance from the drum spring fixing structure to the end of the socket is 8.8±1mm. 3. A terminal for photovoltaic module connector according to claim 1 or 2, characterized in that, the length of the wedge-shaped protrusion structure of the pin is 1.5±0.2mm; the length of the wedge-shaped protrusion structure of the socket The length of the drum spring is 2.2±0.2mm, and the length of the drum spring fixing structure is 1.5±0.2mm. 4. A connector with a connector terminal according to any one of claims 1, 2 or 3, which is used for photovoltaic module connection of a photovoltaic system with a voltage output of 1500V and above, and the connector includes a female plug connection and a male plug connector, the female plug connector includes a nut, a female plug housing threadedly connected with the nut, a plug sleeve arranged inside the female plug housing, the riveted part of the plug sleeve is riveted with the washer and It is fixed by the hook and the nut, the connection and fixing part of the sleeve is fastened with the lock of the sleeve, and the lock of the sleeve is fixed with the female housing; the male plug connector includes a nut, which is threadedly connected with the nut The male socket housing is set on the pin inside the male socket housing. The riveting part of the pin is riveted with the washer and fixed by the hook and the nut. The connection and fixing part of the pin is connected with the pin lock buckle. Connected, the pin lock is fixed with the male housing; there is an O-ring between the male connector and the female connector.