CN219534894U

CN219534894U - Photovoltaic connector and connection structure

Info

Publication number: CN219534894U
Application number: CN202320703531.1U
Authority: CN
Inventors: 唐大海; 徐安安
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-08-15
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a photovoltaic connector and a connecting structure, wherein the photovoltaic connector comprises a shell and a conductive terminal; the conductive terminal has: a first end portion for being disposed outside the housing, for being secured to and electrically connected to the circuit board; and the second end part is electrically connected with the first end part and is used for being rotatably arranged in the shell, and the rotation axis of the second end part is perpendicular to the board surface of the circuit board. The photovoltaic connector is electrically connected with the circuit board through the first end part, so that the installation efficiency of the photovoltaic connector and the circuit board is improved; the probability of problems such as connection failure and poor contact is reduced, and the contact resistance and the heating value of the whole connection structure are reduced; the first end part is aligned with the corresponding connecting part on the circuit board by rotating the conductive terminal, so that the installation efficiency of the conductive terminal and the circuit board is improved, and the installation efficiency of the photovoltaic connector and the circuit board is improved.

Description

Photovoltaic connector and connection structure

Technical Field

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic connector and a connecting structure.

Background

In a photovoltaic power generation system, electric energy generated by a photovoltaic module is transmitted to an inverter through a photovoltaic connector. The photovoltaic connector is electrically connected with the circuit board of the inverter through a cable.

Along with the improvement of the power density of the product, the number of the photovoltaic connectors on the direct current side of the inverter is increased, and the number of the cables is increased, so that the installation steps of the photovoltaic connectors and the circuit board are complex and the installation efficiency is low due to the small operation space and the small bending range of the cables in the product.

In addition, the cables are messy, and the problems of connection failure, poor contact and the like are easy to occur; the cable is connected with the circuit board through the terminal, so that a plurality of connection points exist in the whole connection loop, the contact resistance is large, and the heating value is large.

In summary, how to electrically connect the photovoltaic connector and the circuit board to simplify the installation of the photovoltaic connector and the circuit board and improve the installation efficiency is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present utility model is directed to a photovoltaic connector and a connection structure thereof, which can simplify the installation of the photovoltaic connector and a circuit board and improve the installation efficiency.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a photovoltaic connector, comprising: a housing and a conductive terminal;

wherein the conductive terminal has: a first end portion for being disposed outside the housing, for being fixed to a circuit board and for being electrically connected to the circuit board;

And a second end electrically connected with the first end, wherein the second end is used for being rotatably arranged in the shell, and the rotation axis of the second end is perpendicular to the board surface of the circuit board.

Optionally, the first end and the second end are sequentially distributed along the length direction of the housing, and the length direction of the housing is parallel to the board surface of the circuit board.

Optionally, the first end and the second end are distributed in sequence along the length direction of the housing, and the length direction of the housing is perpendicular to the board surface of the circuit board.

Optionally, the second end is configured to be fixed relative to the housing in a length direction of the housing.

Optionally, the photovoltaic connector further includes a limiting member, and the limiting member is used for being relatively fixed with the housing in the length direction of the housing;

the first end of the shell and the second end of the shell are sequentially distributed along the length direction of the shell, and the first end of the shell is closer to the first end than the second end of the shell;

the limiting piece is used for being in limiting fit with the second end portion to prevent the conductive terminal from moving towards the first end of the shell, and the shell is used for being in limiting fit with the second end portion to limit the conductive terminal from moving towards the second end of the shell.

Optionally, the second end is adapted for rotational engagement with the housing; one of the second end part and the shell is in rotary fit with the limiting piece, the other one of the second end part and the shell is in relative fixed with the limiting piece in the circumferential direction, or the second end part and the shell are in rotary fit with the limiting piece.

Optionally, the second end part is of a cylindrical structure, and the limiting piece is used for being sleeved between the shell and the second end part.

Optionally, the second end part is provided with an end part first limiting structure and an end part second limiting structure, the shell is provided with a shell first limiting structure and a shell second limiting structure, and the limiting piece is provided with a first limiting part and a second limiting part;

the shell second limit structure, the end part first limit structure, the second limit part, the first limit part and the shell first limit structure are distributed in sequence in the length direction of the shell, and the shell first limit structure is closer to the first end part than the shell second limit structure;

the second limiting structure of the shell is in limiting fit with the second limiting structure of the end part, the second limiting part is in limiting fit with the first limiting structure of the end part, and the first limiting part is in limiting fit with the first limiting structure of the shell;

The end part second limiting structure is in rotary fit with the shell second limiting structure.

Optionally, at least two end part first limiting structures are sequentially distributed along the circumferential direction of the second end part, a first gap is formed between two adjacent first limiting structures, and part of the second limiting part and the first gap are at the same position in the circumferential direction of the second end part;

or, the first end part limiting structure is an annular structure with an opening, and a part of the second limiting part and the opening are at the same position in the circumferential direction of the second end part.

Optionally, at least two second limiting parts are distributed along the circumferential direction of the limiting part in sequence, a second gap is formed between two adjacent second limiting parts, and part of the first end part limiting structure and the second gap are at the same position in the circumferential direction of the second end part;

or, the second limiting part is an annular structure with an opening, and a part of the first limiting structure of the end part and the opening are at the same position in the circumferential direction of the second end part.

Optionally, the first limiting portion and the second limiting portion are elastic limiting plates, the first limiting portion and the second limiting portion are at least two and are distributed along the circumferential direction of the limiting member in sequence, the limiting member is provided with a limiting member body, one end, close to the first end, of the second limiting portion is connected with the limiting member body, one end, far away from the first end, of the second limiting portion is suspended and extends towards the direction close to the axis of the limiting member, one end, far away from the first end, of the first limiting portion is connected with the limiting member body, and one end, close to the first end, of the first limiting portion is suspended and extends towards the direction far away from the axis of the limiting member;

And/or the first limit structure of the end part is a limit protrusion, and the thickness of the limit protrusion gradually increases from one end far from the first end part to one end close to the first end part;

and/or, the end part second limiting structure is a shaft shoulder structure, and the shell second limiting structure is a limiting flange.

Optionally, the limiting part body is provided with a yielding hole, one of the first limiting part and the second limiting part is positioned in the yielding hole and is connected with the hole wall of the yielding hole, and the other limiting part is connected with the end part of the limiting part body;

or, the first limiting part is connected with one end part of the limiting part body, and the second limiting part is connected with the other end part of the limiting part body.

Optionally, the limiting piece is a limiting sleeve with an opening, and the opening extends from one axial end of the limiting sleeve to the other axial end of the limiting sleeve.

Optionally, the circuit board has a connection terminal and a through hole, the connection terminal is located at a side of the circuit board away from the housing;

the first end portion is used for being fixed on the connecting terminal and electrically connected with the connecting terminal, and the second end portion is used for extending into the shell from the through hole.

Optionally, the conductive terminal further includes an elastic connection portion electrically connecting the first end portion and the second end portion, and the elastic connection portion is capable of deforming and expanding to adjust a distance between the first end portion and the housing.

Optionally, the elastic connection part is in a wavy line shape or a broken line shape.

Optionally, the first end is configured to be directly electrically connected to the circuit board;

and/or the first end portion has a fixing hole for fixing to the circuit board by a threaded fastener passing through the fixing hole;

and/or the first end part is U-shaped or L-shaped;

and/or the conductive terminal is of an integrally formed structure;

and/or the shell is provided with a positioning structure for positioning and matching with the circuit board.

Based on the above provided photovoltaic connector, the present utility model further provides a connection structure, which includes: a chassis, a circuit board positioned in the chassis, and the photovoltaic connector of any one of the above; the photovoltaic connector comprises at least one photovoltaic connector, and a shell of the photovoltaic connector is fixedly connected with the case.

Optionally, the circuit board is provided with: the temperature sensor is used for detecting the temperature of the first end part, and the controller is connected with the temperature sensor and used for sending out an alarm signal.

In the photovoltaic connector provided by the utility model, the first end part of the conductive terminal is fixed on the circuit board and is electrically connected with the circuit board through the first end part, so that compared with the prior art that the photovoltaic connector is electrically connected with the circuit board by adopting a cable, the photovoltaic connector and the circuit board are simplified in installation, and the installation efficiency of the photovoltaic connector and the circuit board is improved; the probability of the occurrence of problems such as connection failure and poor contact is reduced, and the connection point of the whole connection loop is also reduced, so that the contact resistance and the heating value of the whole connection structure are reduced.

Meanwhile, in the photovoltaic connector provided by the utility model, the first end part is arranged outside the shell, the second end part electrically connected with the first end part in the conductive terminal is arranged in the shell in a rotatable manner, so that the first end part can also rotate, and the position of the first end part in a plane parallel to the circuit board can be adjusted due to the fact that the rotation axis is perpendicular to the board surface of the circuit board, so that the first end part and the corresponding connecting part on the circuit board are aligned conveniently by rotating the conductive terminal in the process of assembling the first end part and the circuit board, the installation efficiency of the conductive terminal and the circuit board is improved, and the installation efficiency of the photovoltaic connector and the circuit board is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a photovoltaic connector according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the structure shown in FIG. 1;

fig. 3 is a schematic structural diagram of the photovoltaic connector according to the embodiment of the present utility model after being mounted on a circuit board and a chassis;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

fig. 5 is a schematic structural diagram of a photovoltaic connector according to an embodiment of the present utility model after the photovoltaic connector is mounted on a circuit board;

fig. 6 is a cross-sectional structure diagram of a photovoltaic connector according to an embodiment of the present utility model;

fig. 7 is an assembly schematic diagram of a conductive terminal and a limiting member in a photovoltaic connector according to an embodiment of the present utility model.

In fig. 1-7:

1 is a photovoltaic connector, 2 is a circuit board, and 3 is a case;

11 is an outer shell, 111 is a first shell limiting structure, 112 is a second shell limiting structure, 12 is a conductive terminal, 121 is a first end, 122 is a second end, 123 is an elastic connecting portion, 124 is a connecting surface, 125 is a fixing hole, 126 is a first end limiting structure, 127 is a second end limiting structure, 13 is a fixing nut, 14 is a gasket, 15 is a limiting piece, 151 is a first limiting portion, 152 is a second limiting portion, 153 is a limiting piece body, 154 is a yielding hole, 21 is a connecting terminal, 22 is a through hole, and 31 is a chassis plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

"parallel" and "perpendicular" as referred to in the present utility model are "substantially parallel" and "substantially perpendicular" in actual operation. "substantially parallel" may be understood as parallel with some error and similarly "substantially perpendicular" may be understood as perpendicular with some error.

In order to solve the technical problems mentioned in the background art, the embodiment of the utility model provides a photovoltaic connector and a connecting structure, wherein the photovoltaic connector is used for being electrically connected with a circuit board, and can be electrically connected with a direct current input end of the circuit board or an alternating current output end of the circuit board.

As shown in fig. 1 and 2, the photovoltaic connector 1 provided in the present embodiment includes: a housing 11 and a conductive terminal 12. Wherein the conductive terminal 12 has a first end 121 and a second end 122 electrically connected.

The housing 11 may be a plastic housing or other type of insulating housing. It is understood that the conductive terminal 12 is provided at one end in the longitudinal direction of the housing 11, and the conductive connector is provided at the other end in the longitudinal direction of the housing 11, and the conductive connector is electrically connected to the conductive terminal 12.

The first end 121 and the second end 122 are sequentially arranged along the longitudinal direction of the housing 11. Of course, the first end 121 and the second end 122 may alternatively be sequentially arranged along other directions of the housing 11, which is not limited in this embodiment.

As shown in fig. 3 to 5, the housing 11 is arranged in a longitudinal direction perpendicular to the circuit board 2. It will be appreciated that the length direction of the housing 11 is perpendicular to the board surface of the circuit board 2, which is the surface of the circuit board 2 with the largest area. In this way, a large number of photovoltaic connectors 1 can be mounted on the circuit board 2, and the photovoltaic connector can be applied to an inverter having a high power density. Of course, other directions of the housing 11 may be selected for vertical distribution with the circuit board 2, and are not limited to the structures shown in fig. 3 to 5.

In practice, the longitudinal direction of the housing 11 may be selected to be parallel to the board surface of the circuit board 2, and is not limited to the above-described configuration.

In order to facilitate the installation of the photovoltaic connector 1, the housing 11 is fixedly connected to the chassis 3. In some embodiments, the photovoltaic connector 1 further comprises a fixing nut 13, the fixing nut 13 is configured to be screwed with the housing 11, the housing 11 is configured to penetrate the case plate 31 of the case 3, and the housing 11 is configured to be fixedly connected to the case plate 31 through the fixing nut 13.

It can be understood that the chassis 3 is an inverter chassis, and the circuit board 2 is a circuit board of an inverter.

In order to improve the stability, the photovoltaic connector 1 further comprises a spacer 14, and the fixing nut 13 is connected to the end face of the housing 11 through the spacer 14.

The fixing nuts 13 may be distributed on the inner side or the outer side of the cabinet plate 31. The inner side of the chassis plate 31 is the inside of the chassis 3, and the outer side of the chassis plate 31 is the outside of the chassis 3. For ease of installation, the fixing nuts 13 may optionally be distributed on the inside of the cabinet plate 31.

In order to improve the connection stability of the housing 11 and the case plate 31, the housing 11 has a limiting portion, and the case plate 31 is positioned between the limiting portion and the fixing nut 13.

In practical situations, the housing 11 may alternatively be fixedly connected to the chassis plate 31 by other means; alternatively, the housing 11 and the chassis plate 31 may be connected in a non-fixed manner, e.g., the housing 11 and the chassis plate 31 may be fixed relative to each other only in a direction perpendicular to the chassis plate 31; the housing 11 may alternatively be provided on other components, and is not limited to the above-described embodiment.

In the above-mentioned conductive terminal 12, the first end 121 is configured to be disposed outside the housing 11, and the second end 122 is configured to be disposed inside the housing 11, so that the housing 11 of the existing product can be directly used without changing the structure of the housing 11.

In the above-mentioned conductive terminal 12, the first end portion 121 is used for being fixed on the circuit board 2 and electrically connected to the circuit board 2. In some embodiments, to simplify the electrical connection of the first end 121 and the circuit board 2, the first end 121 may be selected for direct electrical connection with the circuit board 2, in which case the first end 121 is adapted to contact the circuit board 2 to achieve a direct electrical connection. Of course, the first end 121 may be selected for indirect electrical connection with the circuit board 2, for example, through the first end 121 for indirect electrical connection with the circuit board 2 through a conductive member, which is not limited in this embodiment.

In some embodiments, to facilitate the fixed connection and direct electrical connection of the first end 121 and the circuit board 2, as shown in fig. 1 and 2, the first end 121 has a connection surface 124. The connection surface 124 is used to make contact with the circuit board 2 to make electrical connection. The portion of the first end 121 where the connection surface 124 is located is fixedly connected to the circuit board 2.

It will be appreciated that the connection surface 124 is perpendicular to the length direction of the housing 11, i.e. the connection surface 124 is parallel to the board surface of the circuit board 2.

Because the first end 121 is electrically connected with the circuit board 2, compared with the prior art that the photovoltaic connector is electrically connected with the circuit board by adopting a cable, the installation of the photovoltaic connector 1 and the circuit board 2 is simplified, and the installation efficiency of the photovoltaic connector 1 and the circuit board 2 is improved; the probability of the problems of connection failure, poor contact and the like is reduced, and the connection point of the whole connection loop is also reduced, so that the contact resistance and the heating value of the whole connection structure are reduced, the heat dissipation of the whole machine is facilitated, the inverter can run for a longer time under full load, the situation of derating use caused by overlong use is avoided, and the power generation capacity of the photovoltaic power generation system is facilitated to be improved.

The application of the photovoltaic connector 1 omits wires, reduces the cost of the wires, saves the internal space of the inverter, and is beneficial to the miniaturization design of the inverter.

The first end 121 is used for electrical connection with the circuit board 2, i.e. the circuit board 2 has a connection portion for electrical connection with the first end 121, which connection portion is fixed in position on the circuit board 2. In the mounting process, the first end 121 cannot be connected to the connection portion, especially when the length direction of the housing 11 is perpendicular to the circuit board 2, which results in inconvenient mounting and low mounting efficiency. In order to improve the mounting efficiency, the second end 122 is adapted to be rotatably arranged within the housing 11 to adjust the position of the first end 121 in a plane parallel to the circuit board 2. It will be appreciated that this plane is parallel to the board surface of the circuit board 2 and that the axis of rotation of the second end 122 is perpendicular to the board surface of the circuit board 2. In this case, the position of the projection of the first end 121 on the board surface of the circuit board 2 is adjustable.

With the photovoltaic connector 1, in the process of assembling the first end 121 and the circuit board 2, the first end 121 and the corresponding connection part on the circuit board 2 are aligned conveniently by rotating the conductive terminal 12, so that the installation efficiency of the conductive terminal 12 and the circuit board 2 is improved, and the installation efficiency of the photovoltaic connector 1 and the circuit board 2 is improved; meanwhile, the situation that the first end part 121 and the circuit board 2 cannot be assembled due to the tolerance of the conductive terminal 12, the tolerance of the circuit board 2 and the assembly tolerance of the conductive terminal 12 and the circuit board 2 is avoided, and correspondingly, the requirements on the machining precision of the conductive terminal 12 and the circuit board 2 are reduced.

In the case where the longitudinal direction of the housing 11 is perpendicular to the circuit board 2, the second end 122 is for being fixed relative to the housing 11 in the longitudinal direction of the housing 11 for the sake of simplified installation. In some embodiments, the photovoltaic connector 1 further comprises a stop 15, the stop 15 being for relative fixation with the housing 11 in the length direction of the housing 11. The limiting member 15 is configured to be in limiting engagement with the second end 122 to block the conductive terminal 12 from moving toward the first end of the housing 11, and the housing 11 is configured to be in limiting engagement with the second end 122 to limit the conductive terminal 12 from moving toward the second end of the housing 11.

The first end of the housing 11 and the second end of the housing 11 are sequentially distributed along the length direction of the housing 11, and the first end of the housing 11 is closer to the first end 121 than the second end of the housing 11. The stopper 15 is provided in the housing 11.

In the above structure, the second end 122 is limited by the housing 11 and the limiting member 15 together, so that the second end 122 and the housing 11 are relatively fixed.

In the above-described structure, in order to secure the rotation of the second end 122, the second end 122 is adapted to be in rotational engagement with the housing 11. In this case, one of the second end 122 and the housing 11 may be selected to be in rotational engagement with the stopper 15, the other may be selected to be fixed relative to the stopper 15 in the circumferential direction, and both the second end 122 and the housing 11 may be selected to be in rotational engagement with the stopper 15.

It is understood that the rotation axis of the rotational fit is the rotation axis of the second end 122.

In order to facilitate the installation of the second end 122, the housing 11 and the limiting member 15, the second end 122 is in a cylindrical structure, and the limiting member 15 is arranged between the housing 11 and the second end 122 in a sleeved mode. It will be appreciated that the stop 15 is a stop collar. In this case, the first end portion 121 may be selected to have a sheet-like structure, so that the first end portion 121 is easily fixedly and electrically connected to the circuit board 2.

The cylindrical structure may have a closed structure or may have an opening in the circumferential direction. If the tubular structure has an opening, the opening extends from one end of the tubular structure to the other end of the tubular structure.

In order to facilitate the installation of the limiting member 15, the limiting member 15 may be selected to be a limiting sleeve having an opening, i.e. the limiting sleeve is not closed in the circumferential direction thereof, and the opening extends from one axial end of the limiting sleeve to the other axial end of the limiting sleeve, and the axial direction of the limiting sleeve is the length direction of the housing 11. In this way, the limiting sleeve has elasticity, and the installation of the limiting sleeve 15 is facilitated.

Of course, the stop collar may be a closed structure in its circumferential direction, and is not limited to the above structure.

In practical situations, the second end 122 and the limiting member 15 may alternatively have other structures, which are not limited in this embodiment.

In some embodiments, to facilitate the above-described structure, as shown in fig. 6 and 7, the second end 122 of the conductive terminal 12 has an end first limiting structure 126 and an end second limiting structure 127, the housing 11 has a housing first limiting structure 111 and a housing second limiting structure 112, and the limiting member 15 has a first limiting portion 151 and a second limiting portion 152. In the length direction of the housing 11, the second shell limiting structure 112, the second end limiting structure 127, the first end limiting structure 126, the second limiting portion 152, the first limiting portion 151 and the first shell limiting structure 111 are sequentially distributed, and the first shell limiting structure 111 is closer to the first end 121 than the second shell limiting structure 112.

In the above structure, the second shell limiting structure 112 and the second end limiting structure 127 abut against to realize a limiting fit to block the conductive terminal 12 from moving toward the second end of the housing 11, the second limiting portion 152 and the first end limiting structure 126 abut against to realize a limiting fit to block the conductive terminal 12 from moving toward the first end of the housing 11, and the first limiting portion 151 and the first shell limiting structure 111 abut against to realize a limiting fit to block the limiting member 15 from moving toward the first end of the housing 11. In this way, the second end 122 and the housing 11 are relatively fixed in the length direction of the housing 11.

In the above structure, the end portion second stopper 127 and the case second stopper 112 are rotatably engaged. In this case, the optional end first limiting structure 126 is rotationally engaged with the limiting member 15, the second limiting portion 152 is rotationally engaged with the second end 122, and the first limiting portion 151 is rotationally engaged with the housing 11; the first limit structure 126 of the end part and the limit piece 15 can be selected to be in rotary fit, the second limit part 152 and the second end part 122 are in rotary fit, and the first limit part 151 and the shell 11 are relatively fixed in the circumferential direction; alternatively, the first end portion limiting structure 126 and the limiting member 15 are fixed relatively in the circumferential direction, the second limiting portion 152 and the second end portion 122 are fixed relatively in the circumferential direction, and the first limiting portion 151 is in rotary fit with the housing 11.

The specific structures of the second shell limiting structure 112, the second end limiting structure 127, the first end limiting structure 126, the second limiting portion 152, the first limiting portion 151 and the first shell limiting structure 111 are selected according to practical situations.

In some embodiments, to facilitate the placement of the end first limiting structures 126, at least two end first limiting structures 126 may be selected and distributed sequentially along the circumference of the second end 122, with a first gap between two adjacent end first limiting structures 126. In this case, in order to ensure that the second limiting portion 152 is in limiting engagement with the at least one end portion first limiting structure 126 when the second end portion 122 is rotated to an arbitrary position, the same position of the portion of the second limiting portion 152 and the first gap in the circumferential direction of the second end portion 122 may be selected.

In some embodiments, the end first limiting structure 126 may alternatively be an annular structure with an opening, in which case, in order to ensure that the second limiting portion 152 is in limiting engagement with the end first limiting structure 126 when the second end 122 rotates to an arbitrary position, a portion of the second limiting portion 152 and the opening are at the same position in the circumferential direction of the second end 122.

In some embodiments, to facilitate the provision of the second limiting portions 152, at least two second limiting portions 152 may be selected and distributed sequentially along the circumferential direction of the limiting member 15, and a second gap is provided between two adjacent second limiting portions 152. In this case, in order to ensure that the end portion first limiting structure 126 is in limiting engagement with the at least one second limiting portion 152 when the second end portion 122 is rotated to an arbitrary position, a portion of the end portion first limiting structure 126 and the second gap may be selected to be at the same position in the circumferential direction of the second end portion 122.

In the above embodiment, in the case that at least two end portion first limiting structures 126 are sequentially distributed along the circumferential direction of the second end portion 122, and a first gap is formed between two adjacent end portion first limiting structures 126, the end portion first limiting structures 126 and the second limiting portions 152 are alternately distributed along the circumferential direction of the second end portion 122; and in the circumferential direction of the second end 122, a part of the first end limiting structure 126 and a part of the second limiting part 152 are distributed at the same position.

In some embodiments, the second limiting portion 152 may alternatively be a ring-shaped structure having an opening. In this case, in order to ensure that the first end portion limiting structure 126 is in limiting engagement with the second limiting portion 152 when the second end portion 122 is rotated to an arbitrary position, a portion of the first end portion limiting structure 126 and the opening are at the same position in the circumferential direction of the second end portion 122.

In order to facilitate the rotation fit of the end second limiting structure 127 and the shell second limiting structure 112, the end second limiting structure 127 may be selected to be a shoulder structure, and the shell second limiting structure 112 may be a limiting flange. In order to improve stability, the limit flanges are annular, or the limit flanges are more than two and distributed along the circumferential direction of the shell 11 in sequence, and the shaft shoulder structure can also be closed annular or annular with an opening.

Of course, the end portion second limiting structure 127 and the shell second limiting structure 112 may be selected to have other structures, which are not limited in this embodiment.

In the above structure, the conductive terminal 12 and the stopper 15 may be assembled first, and then the conductive terminal 12 with the stopper 15 and the housing 11 may be assembled; alternatively, the stopper 15 and the housing 11 are assembled first, and then the conductive terminal 12 is inserted into the housing 11 having the stopper 15. To simplify the installation, the end first limiting structure 126 may be selected to be a limiting protrusion, the thickness of which gradually increases from one end far from the first end 121 to one end near the first end 121. It will be appreciated that the thickness of the limit projection is the distance the limit projection is above the circumferential surface of the second end 122. This facilitates the positioning of the limiter 15 over the conductive terminal 12 from the second end 122 (first assembling the limiter 15 and the conductive terminal 12, and then assembling the conductive terminal 12 and the housing 11 with the limiter 15), and also facilitates the insertion of the conductive terminal 12 into the housing 11 with the limiter 15 (first assembling the limiter 15 and the housing 11, and then inserting the conductive terminal 12 into the housing 11 with the limiter 15).

In order to simplify the structure of the housing 11, the housing first stop structure 111 may be selected to be a stop flange. Of course, other structures of the first shell limiting structure 111 may be selected, which is not limited in this embodiment.

In order to be convenient for install the locating part 15 and be convenient for realize spacing through the locating part 15, above-mentioned first spacing portion 151 and second spacing portion 152 are the elasticity limiting plate, and first spacing portion 151 and second spacing portion 152 are two at least and distribute in proper order along the circumference of locating part 15. The limiting piece 15 has a limiting piece body 153, the limiting piece body 153 has a yielding hole 154, the second limiting portion 152 is located in the yielding hole 154, one end of the second limiting portion 152, which is close to the first end 121, is connected with the hole wall of the yielding hole 154, and the other end of the second limiting portion 152, which is far from the first end 121, is suspended and extends in a direction close to the axis of the limiting piece 15; one end of the first limiting portion 151 far away from the first end 121 is connected with the end portion of the limiting member body 153, and the other end of the first limiting portion 151 close to the first end 121 is arranged in a suspended mode and extends in a direction far away from the axis of the limiting member 15.

It should be noted that, a gap is formed between two adjacent first limiting portions 151, and a predetermined distance is formed between two adjacent second limiting portions 152. The relief holes 154 provide a movable space for the second stop 152.

In the above structure, since the first limiting portions 151 and the second limiting portions 152 are at least two and are sequentially distributed along the circumferential direction of the limiting member 15, all the first limiting portions 151 form a tapered structure from the first end 121 to the second end 122, and all the second limiting portions 152 form a tapered structure from the first end 121 to the second end 122.

In practical situations, the first limiting portion 151 may be located in the yielding hole 154, one end of the first limiting portion 151 is connected with the wall of the yielding hole 154, and the second limiting portion 152 is connected with the end of the limiting member body 153.

In practical situations, the second limiting portion 152 may be directly disposed at the end of the limiting member body 153 without providing the relief hole 154, and in this case, the first limiting portion 151 and the second limiting portion 152 are respectively disposed at two ends of the limiting member body 153, that is, one end of the first limiting portion 151 and one end of the limiting member body 153 are connected, and the other end of the second limiting portion 152 and the other end of the limiting member body 153 are connected.

In practical applications, the limiting member 15 may alternatively have other structures, which are not limited to the above embodiments.

In the above-mentioned photovoltaic connector, since the first end portion 121 is used for fixedly and electrically connecting with the circuit board 2, the first end portion 121 occupies a larger area and the second end portion 122 occupies a smaller area in a plane parallel to the board surface of the circuit board 2, particularly in the case that the first end portion 121 has the connecting surface 124.

In some embodiments, as shown in fig. 5, in the case where the length direction of the housing 11 is perpendicular to the circuit board 2, the circuit board 2 has connection terminals 21 and through holes 22, and the connection terminals 21 are located on the side of the circuit board 2 remote from the housing 11. Wherein the first end 121 of the conductive terminal 12 is adapted to be fixed to the connection terminal 21 and to be in contact with the connection terminal 21 for electrical connection, and the second end 122 of the conductive terminal 12 is adapted to extend from the through hole 22 into the housing 11.

The connection terminal 21 is a part of the circuit board 2, and the connection terminal 21 may be soldered to the circuit board 2. If the first end 121 has a connection surface 124, the connection surface 124 is located on a side of the connection terminal 21 away from the housing 11, or the connection surface 124 is located on a side of the connection terminal 21 near the housing 11.

The steps for installing the photovoltaic connector 1 are as follows:

firstly, fixing the shell 11 of the photovoltaic connector 1 on the case 3; then fixing the circuit board 2 inside the chassis 3; the second end 122 of the conductive terminal 12 is inserted into the housing 11 fixed to the chassis 3 from the side of the circuit board 2 away from the housing 11 through the through hole 22 on the circuit board 2, and finally the first end 121 of the conductive terminal 12 and the connection terminal 21 are fixedly connected and electrically connected. During the mounting process, the position of the first end 121 may be adjusted by rotating the conductive terminal 12, thereby simplifying the mounting of the conductive terminal 12.

In the case where a plurality of photovoltaic connectors 1 are required to be mounted on the circuit board 2, the other photovoltaic connectors 1 are sequentially mounted in accordance with the above-described mounting steps.

The structure and the mounting steps simplify the mounting of the photovoltaic connector 1 and the circuit board 2, reduce the through holes 22, avoid enlarging the circuit board 2, and facilitate the adjustment of the safety distance.

If all the conductive terminals 12 of the photovoltaic connector 1 are fixed to the circuit board 2, each conductive terminal 12 and the corresponding housing 11 are assembled, which makes the mounting difficult and the operation inconvenient.

In practical situations, if the first end 121 of the conductive terminal 12 passes through the through hole 22 on the circuit board 2 from the side of the circuit board 2 near the housing 11, the through hole 22 needs to be set larger, which results in a larger circuit board 2 and a harder adjustment of the alignment distance.

In some embodiments, the first end 121 and the second end 122 occupy an equal area in a plane parallel to the plane of the circuit board 2, or the first end 121 occupies an area smaller than the second end 122, the first end 121 of the conductive terminal 12 may be selected to pass through the through hole 22 on the circuit board 2 from a side of the circuit board 2 adjacent to the housing 11.

In some embodiments, the connection terminals 21 may be located on a side of the circuit board 2 close to the housing 11, in which case the circuit board 2 does not need to be provided with through holes 22.

The shape of the connection terminal 21 is selected according to the actual situation, and the connection terminal 21 is, for example, L-shaped or U-shaped, and the present embodiment is not limited thereto.

In the above-mentioned photovoltaic connector 1, the first end 121 is used for fixedly and electrically connecting with the circuit board 2, that is, the first end 121 is hard-connected with the circuit board 2, so that a gap is easily formed between the first end 121 and the circuit board 2 due to assembly tolerance or component tolerance, which results in that the first end 121 cannot be fixedly and electrically connected with the circuit board 2, especially when the housing 11 is used for fixedly connecting with the chassis board 31. In order to avoid the above problem, the conductive terminal 12 further includes an elastic connection portion 123 electrically connecting the first end portion 121 and the second end portion 122, and the elastic connection portion 123 can be deformed to stretch and retract to adjust the distance between the first end portion 121 and the housing 11. It is understood that the elastic connection 123 can be deformed and expanded in the longitudinal direction of the housing 11. In this way, the expansion and contraction amount of the elastic connection portion 123 can compensate for the self tolerance of the housing 11, the self tolerance of the circuit board 2, and the assembly tolerance of the housing 11 and the circuit board 2, thereby ensuring the fixed connection and the electrical connection of the first end portion 121 and the circuit board 2, simplifying the installation of the first end portion 121 and the circuit board 2, and improving the reliability of the electrical connection of the first end portion 121 and the circuit board 2.

The specific structure of the elastic connection 123 is selected according to the actual situation. As shown in FIG. 2, the elastic connection 123 may alternatively be in the form of a wavy line, such as an "S" shape for the elastic connection 123. Of course, the elastic connection portion 123 may alternatively be a zigzag line, for example, the elastic connection portion 123 may be a "Z"; alternatively, the elastic connection portion 123 may have a partially wavy line shape and a partially folded line shape.

Of course, the elastic connection portion 123 may be formed in a spiral shape, and is not limited to the wavy line type and the zigzag type.

In some embodiments, the first end 121 is configured to be fastened to the circuit board 2 by a threaded fastener; wherein the first end 121 is provided with a fixing hole 125, and a threaded fastener passes through the fixing hole 125. It will be appreciated that the circuit board 2 also needs to be provided with mounting holes through which threaded fasteners pass.

The threaded fastener may be a screw or bolt, etc. In order to improve the reliability, the screw may be selected to be a locking screw. Of course, the screw may be selected to be a normal screw, which is not limited in this embodiment.

The circuit board 2 is provided with a patch nut for threaded engagement with a threaded fastener. Wherein, the paster nut sets up in the mounting hole of circuit board 2, has improved threaded connection reliability like this, can prevent to lead to contact failure and conductive terminal 12 burning out because of threaded fastener is not hard up.

In the actual production process, after the threaded fastener on the circuit board 2 is locked, the threaded fastener needs to be subjected to dispensing treatment, so that on one hand, the screw loosening is prevented, on the other hand, the safety margin (two adjacent threaded fasteners are electrified and have high voltage) is increased, and the dispensing treatment can be omitted.

It should be noted that, after dispensing, a dispensing layer is formed, the dispensing layer is fixed on the circuit board 2, and the dispensing layer is used for covering the threaded fastener on the circuit board 2. Of course, other insulating layers may be selected instead of the glue lines.

In other embodiments, the first end 121 of the optional conductive terminal 12 is configured to be secured to the circuit board 2 by soldering, and is not limited to being secured by threaded fasteners.

In the photovoltaic connector 1 described above, the specific shape and structure of the first end portion 121 is selected according to the actual situation. In order to facilitate connection between the first end 121 and the circuit board 2, the first end 121 may be selected to be L-shaped, so that connection between the first end 121 and the connection terminal 21 may be ensured, and connection between the first end 121 and other types of connection portions (patch nuts) in the circuit board 2 may be ensured, so that the first end 121 may be suitable for various conductive structures in the circuit board 2, and installation of the first end 121 and the circuit board 2 may be simplified.

Of course, the first end 121 may be formed in other shapes, for example, the first end 121 may be formed in a U shape, which is not limited in this embodiment.

In the photovoltaic connector 1, the conductive terminals 12 are integrally formed, for example, the conductive terminals 12 are integrally formed by pressing, for the convenience of production. In this way, the conductive terminal 12 is low cost and reliable in quality.

When the first end 121 has a sheet-like shape and the second end 122 has a cylindrical structure, the conductive terminal 12 may have an integrally molded structure.

In order to simplify the installation of the photovoltaic connector 1 and the circuit board 2, the housing 11 has a positioning structure for positioning engagement with the circuit board 2. For the convenience of production, one of the housing 11 and the circuit board 2 may be provided with a positioning post, and the other one is provided with a positioning hole in positioning fit with the positioning post. In order to facilitate the production of the circuit board 2, the positioning holes are located in the circuit board 2 and the positioning posts are located in the housing 11.

In practice, if the housing 11 and the circuit board 2 are not conveniently positioned, the case board 31 and the circuit board 2 may be selected to be in positioning fit. The specific structure of the positioning and matching of the chassis board 31 and the circuit board 2 is selected according to the actual situation, and this embodiment is not limited thereto.

Of course, the housing 11 may also have a positioning structure for positioning and matching with the circuit board 2, and the chassis board 31 and the circuit board 2 are positioned and matched, so that dual positioning is realized, and the positioning effect is better.

Based on the photovoltaic connector provided in the above embodiments, the present embodiment provides a connection structure, which includes: a chassis 3, a circuit board 2 located in the chassis 3, and the photovoltaic connector 1 described in the above embodiment.

In the case that the photovoltaic connector 1 has the above technical effects, the above connection structure also has corresponding technical effects, and will not be described in detail herein.

The relationship between the chassis 3 and the photovoltaic connector 1, and the relationship between the chassis 3 and the circuit board 2 are referred to above, and will not be described here again.

In the above connection structure, the number of the photovoltaic connectors 1 is at least one. In the case where there are at least two photovoltaic connectors 1, any two photovoltaic connectors 1 may be the same or different, and this embodiment is not limited thereto, and is selected according to the actual situation.

In some embodiments, the circuit board 2 is provided with a temperature sensor for detecting the temperature of the first end 121 and a controller connected to the temperature sensor for sending an alarm signal.

It will be appreciated that the temperature sensor may or may not be in contact with the first end 121, as the case may be. The type of the temperature sensor is selected according to the actual situation, and this embodiment is not limited thereto.

The controller is used for acquiring the detection value of the temperature sensor, and the controller is used for sending out an alarm signal when the detection value exceeds a set value and the photovoltaic sensor 1 is abnormal. The alarm signal may be an audible alarm signal and/or a light alarm signal. Of course, the alarm signal may be other signals, for example, the above connection structure further includes an alarm, and the alarm is connected with the controller and is used for alarming, where the alarm is used for obtaining the alarm signal of the controller and alarming according to the alarm signal, and the alarm may be a buzzer or an alarm lamp.

In the above structure, since the first end 121 is electrically connected with the circuit board 2, the temperature of the first end 121 can be detected by the temperature sensor on the circuit board 2, so as to achieve the purpose of detecting the temperature of the conductive terminal 12, the controller can determine whether the photovoltaic connector 1 is abnormal or not by the detection value of the temperature sensor, and the controller sends an alarm signal under the condition that the photovoltaic connector 1 is abnormal (the detection value exceeds the set value), thereby reducing the probability of burnout failure of the photovoltaic connector 1 due to overhigh temperature and improving the reliability of products.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic connector, comprising: a housing and a conductive terminal;

2. The photovoltaic connector of claim 1, wherein the first end and the second end are sequentially distributed along a length direction of the housing, the length direction of the housing being parallel to a board face of the circuit board.

3. The photovoltaic connector of claim 1, wherein the first end and the second end are sequentially distributed along a length direction of the housing, the length direction of the housing being perpendicular to a board face of the circuit board.

4. A photovoltaic connector according to claim 3, wherein the second end is adapted to be fixed relative to the housing in a length direction of the housing.

5. The photovoltaic connector of claim 4, further comprising a stop member for being fixed relative to the housing in a length direction of the housing;

6. The photovoltaic connector of claim 5, wherein the second end is configured to rotationally mate with the housing; one of the second end part and the shell is in rotary fit with the limiting piece, the other one of the second end part and the shell is in relative fixed with the limiting piece in the circumferential direction, or the second end part and the shell are in rotary fit with the limiting piece.

7. The photovoltaic connector of claim 5, wherein the second end is a cylindrical structure and the retainer is configured to fit between the housing and the second end.

8. The photovoltaic connector of claim 7, wherein the second end has an end first limit structure and an end second limit structure, the housing has a housing first limit structure and a housing second limit structure, and the limiter has a first limit and a second limit;

9. The photovoltaic connector of claim 8, wherein,

the two end part first limiting structures are at least two and are distributed in sequence along the circumferential direction of the second end part, a first gap is formed between every two adjacent end part first limiting structures, and part of the second limiting part and the first gap are at the same position in the circumferential direction of the second end part;

10. The photovoltaic connector of claim 8, wherein,

the two second limiting parts are at least two and are distributed in sequence along the circumferential direction of the limiting part, a second gap is formed between every two adjacent second limiting parts, and part of the first end limiting structure and the second gap are at the same position in the circumferential direction of the second end;

11. The photovoltaic connector of claim 8, wherein,

the first limiting part and the second limiting part are elastic limiting plates, the first limiting part and the second limiting part are at least two and are distributed along the circumferential direction of the limiting part in sequence, the limiting part is provided with a limiting part body, one end, close to the first end, of the second limiting part is connected with the limiting part body, one end, far away from the first end, of the second limiting part is suspended and extends towards the direction, close to the axis, of the limiting part, one end, far away from the first end, of the first limiting part is connected with the limiting part body, one end, close to the first end, of the first limiting part is suspended and extends towards the direction, far away from the axis, of the limiting part;

12. The photovoltaic connector of claim 11, wherein the retainer body has a relief hole, one of the first and second retainer portions being located in the relief hole and connected to a wall of the relief hole, the other being connected to an end of the retainer body;

13. The photovoltaic connector of claim 7, wherein the stop is a stop collar having an opening extending from one axial end of the stop collar to the other axial end of the stop collar.

14. The photovoltaic connector of claim 3, wherein,

the circuit board is provided with a connecting terminal and a through hole, and the connecting terminal is positioned at one side of the circuit board, which is far away from the shell;

15. The photovoltaic connector of claim 1, wherein the conductive terminal further comprises an elastic connection electrically connecting the first end and the second end, the elastic connection being deformable and stretchable to adjust a distance of the first end to the housing.

16. The photovoltaic connector of claim 15, wherein the elastic connection portion is in a wavy line or a zigzag line.

17. The photovoltaic connector of any of claims 1-16, wherein,

the first end is used for being directly and electrically connected with the circuit board;

and/or the first end part is U-shaped or L-shaped;

and/or the conductive terminal is of an integrally formed structure;

18. A connection structure, characterized by comprising: a chassis, a circuit board within the chassis, and the photovoltaic connector of any one of claims 1-17; the photovoltaic connector comprises at least one photovoltaic connector, and a shell of the photovoltaic connector is fixedly connected with the case.

19. The connection structure according to claim 18, wherein the circuit board is provided with:

the temperature sensor is used for detecting the temperature of the first end part, and the controller is connected with the temperature sensor and used for sending out an alarm signal.