Platinum thermal resistor temperature sensor for photovoltaic inverter

Abstract

The present invention discloses a platinum thermistor temperature sensor for a photovoltaic inverter, comprising a fixed plate, a fixing part and a conductive component. The fixing part is composed of a first movable plate, a second movable plate and a third movable plate that are symmetrically arranged. The conductive component is composed of a mounting part, a rotating part, a locking part and a deforming part. A first pin and a second pin are provided on the temperature sensor, the first pin is provided with a first bending section, and the second pin is provided with a second bending section. The platinum thermistor temperature sensor for the photovoltaic inverter has a compact structure and a clever design. The fixing part is installed on the fixed plate inside the inverter by directly pressing and inserting, and then the temperature sensor can be installed according to actual needs, so that the temperature sensor can monitor both ends of the inverter, thereby achieving accurate monitoring. In addition, the power is turned on during clamping, which can achieve rapid power off when the temperature sensor is replaced or repaired in the later stage, thereby improving the work efficiency of the entire maintenance.

Description

Technical Field

[0001] The invention relates to temperature sensor technology, and in particular to a platinum thermal resistor temperature sensor for a photovoltaic inverter. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to convert light energy into electrical energy. Photovoltaic systems usually include photovoltaic modules, photovoltaic terminals, inverters, AC power distribution equipment, etc. The wiring process of existing photovoltaic terminals is as follows: after stripping the cable, use a special tool for the cable to crimp the cable to both sides of the photovoltaic terminal. One side of the cable is connected to the photovoltaic module, and the other side of the cable is connected to the photovoltaic inverter or photovoltaic DC junction box. Among them, when the photovoltaic terminal and the cable are poorly crimped, it is easy to cause excessive contact resistance, heating, or even aging and fire.

[0003] Photovoltaic inverters are used to convert direct current into alternating current in photovoltaic power generation systems. This process will generate a lot of heat. In order to ensure the normal operation of the photovoltaic inverter, it is necessary not only to discharge the generated heat immediately so that the working environment of the photovoltaic inverter is within the normal temperature range, but also to add a temperature sensor to monitor the temperature inside the photovoltaic inverter.

[0004] However, the existing temperature sensor is fixed by directly locking it with a nut, but this method requires drilling and installation at the drilled hole, which makes the installation inconvenient. There are also binding and welding methods. Binding is to manually control the installation position of the temperature sensor, which is prone to the risk of falling, and welding depends on the stability of welding, which is not convenient for later processing and replacement. Summary of the invention

[0005] In order to solve the defects of the above-mentioned prior art, the present invention proposes a platinum thermal resistor temperature sensor for a photovoltaic inverter.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A platinum thermal resistor temperature sensor for a photovoltaic inverter, characterized by comprising:

[0008] A fixing plate, wherein a mounting hole is provided on the fixing plate,

[0009] A fixing member is arranged in the mounting hole, the fixing member is composed of a symmetrically arranged first movable plate, a second movable plate and a third movable plate, the upper ends of the symmetrically arranged first movable plates are connected, the second movable plate is located at the lower end of the first movable plate, the third movable plate is located at the lower end of the second movable plate, a deformation area is formed between the symmetrically arranged first movable plate and the second movable plate, a compression area is formed between the symmetrically arranged third movable plates, a spiral portion for installing a temperature sensor is provided on the third movable plate, and bending portions cooperating with the mounting hole are provided on both sides of the first movable plate, and the bending portions are placed at the edge of the mounting hole,

[0010] and a conductive component arranged in rotational symmetry, the conductive component being installed at the lower end of the fixed plate, the conductive component being composed of a mounting member, a rotating member, a locking member and a deforming member, the mounting member being fixed to the lower end of the fixed plate by bolts, a through hole for accommodating the rotating member being provided in the middle of the mounting member, the rotating member being composed of a hexagonal portion and a rod body, the rod body being installed in the through hole, a threaded hole being provided in the middle of the rod body, the locking member being composed of a threaded portion and a blocking portion, the threaded portion being installed in cooperation with the threaded hole, the deforming member being composed of a deforming plate and a symmetrically arranged fixed arm, the threaded portion passing through the through hole being provided on the deforming plate The through hole has a diameter larger than that of the threaded portion but smaller than that of the blocking portion, and a movable space is formed between the symmetrically arranged fixing arms, and the fixing arms are provided with a first elastic portion and a second elastic portion, and a fixing opening is formed between the first elastic portion and the second elastic portion, and symmetrical fixing portions are provided at both ends of the fixing opening, and a locking opening is formed between the fixing portions, and the locking opening is communicated with the fixing opening, and a conductive member is provided in the fixing opening, and symmetrically arranged extension portions are provided on the mounting member, and a receiving opening for placing a deformable member is formed between the extension portions, and a positioning hole for fixing the deformable plate is provided on the extension portion,

[0011] The temperature sensor is provided with a first pin and a second pin, the first pin is provided with a first bending section, the second pin is provided with a second bending section, and the first bending section and the second bending section are arranged in the activity space.

[0012] In the present invention, when the first movable plate and the second movable plate are in a normal state, the maximum width of the bent portion is greater than the width of the mounting hole; when the first movable plate and the second movable plate are in a state of being subjected to force and moving toward the deformation area, the maximum width of the bent portion is less than the width of the mounting hole.

[0013] In the present invention, the angle between the bending portion and the first movable plate is 15°-20°.

[0014] In the present invention, the lower end of the bent portion forms a contact surface, the two ends of the second movable plate form blocking surfaces, and a movable opening is formed between the contact surface and the blocking surface.

[0015] In the present invention, the spiral portion is composed of a first spiral ring, a second spiral ring and a third spiral ring. A first elastic area is formed between the first spiral ring and the second spiral ring, a second elastic area is formed between the second spiral ring and the first spiral ring, and the middle of the third spiral ring forms an installation area for the temperature sensor.

[0016] In the present invention, the conductive member is composed of a mounting body matched with the fixing opening and a locking block matched with the locking opening.

[0017] In the present invention, a conical hole is provided on the mounting body, and conical heads are provided on the first bending section and the second bending section, and the conical heads match the conical hole.

[0018] In the present invention, a locking groove is provided on the inner wall of the fixing port, a locking protrusion cooperating with the locking groove is provided on the mounting body, and an inclined pushing surface and a horizontal locking surface are provided on the locking protrusion.

[0019] In the present invention, a conductive hole is provided on the mounting body, and a screw is arranged in the conductive hole.

[0020] In the present invention, the length of the through hole is greater than the length of the rod body, and the side surface of the hexagonal portion contacts the end surface of the mounting member.

[0021] The platinum thermal resistor temperature sensor for photovoltaic inverters of the present invention has the following beneficial effects: the platinum thermal resistor temperature sensor for photovoltaic inverters has a compact structure and a clever design. The fixing part is installed on the fixing plate inside the inverter by directly pressing and inserting, and then the temperature sensor can be installed according to actual needs, so that the temperature sensor can monitor both ends of the inverter, thereby achieving accurate monitoring. In addition, the power is turned on during clamping, which can achieve rapid power off when the temperature sensor is replaced or repaired later, thereby improving the work efficiency of the entire maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of a platinum thermal resistor temperature sensor for a photovoltaic inverter of the present invention;

[0023] Figure 2 for Figure 1 Exploded diagram of

[0024] Figure 3 for Figure 2 Schematic diagram of the fixing structure in FIG.

[0025] Figure 4 for Figure 3 A local enlarged view of point A in FIG.

[0026] Figure 5 for Figure 3The main view;

[0027] Figure 6 It is a schematic diagram of the installation state of the conductive member and the fixing plate in the present invention;

[0028] Figure 7 for Figure 2 Schematic diagram of the conductive component structure;

[0029] Figure 8 for Figure 7 Exploded diagram of

[0030] Fig. 9 for Figure 8 A perspective view of the conductive member structure in FIG.

[0031] Fig.10 for Figure 8 Perspective view of the structure of the medium-deformed part;

[0032] Fig.11 It is a schematic diagram of the installation status of the temperature sensor and the conductive component in the present invention.

[0033] In the figure: fixed plate 1, fixed part 2, conductive component 3, temperature sensor 4, mounting hole 5, bending part 6, second movable plate 7, long side 8, short side 9, compression area 10, first movable plate 11, third movable plate 12, deformation area 13, spiral part 14, first spiral ring 15, second spiral ring 16, third spiral ring 17, first elastic area 18, second spiral ring 19, second elastic area 20, mounting area 21, conductive hole 22, contact surface 23, blocking surface 24, movable port 25, mounting part 26, rotating part 27, locking part 28, deformation part 29, bolt 30, through hole 31, rod body 3 2. Hexagonal portion 33, end face 34, side face 35, threaded hole 36, threaded portion 37, screw 38, blocking portion 39, deformation plate 40, fixed arm 41, through hole 42, movable space 43, first pin 44, second pin 45, first bending section 46, second bending section 47, first elastic portion 48, second elastic portion 49, fixing opening 50, fixing portion 51, locking opening 52, conductive member 53, extension portion 54, accommodating opening 55, positioning hole 56, mounting body 57, locking block 58, tapered hole 59, tapered head 60, locking groove 61, locking protrusion 62, pushing surface 63, locking surface 64, arc surface 65. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] like Figures 1 to 11As shown, the platinum thermal resistor temperature sensor for photovoltaic inverter of the present invention comprises a fixing plate 1, a fixing member 2 and a conductive component 3. The fixing plate 1 is a component inside the inverter, and the parts inside the inverter can be directly mounted on the fixing plate 1, while the fixing member 2 is used to fix the position of the temperature sensor 4, and the fixing member 2 is fixed by the fixing plate 1. The conductive component 3 can provide power to the temperature sensor 4 to achieve rapid power on or power off, and can be used without welding.

[0036] In addition, for the installation or maintenance of the temperature sensor 4 , it is not convenient to carry welding equipment when working outdoors, and the electrical connection of the temperature sensor 4 can be quickly and conveniently achieved through the conductive component 3 .

[0037] A mounting hole 5 is provided on the fixed plate 1, and the mounting hole 5 is in the shape of a long strip. The long side 8 of the mounting hole 5 can be used to realize the positioning of the bending portion 6, and the short side 9 of the mounting hole 5 can be used to realize the position limitation of the second movable plate 7, so that it can only move up and down but not forward and backward. The long side 8 can also limit the left and right position limitation of the second movable plate 7.

[0038] Furthermore, when the second movable plate 7 is subjected to force toward the deformation area 13 and enters the mounting hole 5, the upper end of the second movable plate 7 is kept in contact with the long side 8 under the elastic force of the second movable plate 7 itself. The long side 8 can limit the elastic force of the second movable plate 7 itself, thereby keeping the second movable plate 7 under force and restricted in the mounting hole 5.

[0039] like Figure 5 As shown, the fixing member 2 is subjected to a force from the direction F2, and keeps the first movable plate 11 extending in the direction F1.

[0040] The fixing member 2 is arranged in the mounting hole 5, and the fixing member 2 is composed of a symmetrically arranged first movable plate 11, a second movable plate 7 and a third movable plate 12. The entire fixing member 2 is formed by bending a plate, the upper ends of the symmetrically arranged first movable plates 11 are kept connected, the second movable plate 7 is located at the lower end of the first movable plate 11, and the angle between the first movable plate 11 and the second movable plate 7 is greater than 90° but less than 180°.

[0041] The third movable plate 12 is located at the lower end of the second movable plate 7, and a deformation area 13 is formed between the symmetrically arranged first movable plate 11 and the second movable plate 7, and a compression area 10 is formed between the symmetrically arranged third movable plates 12. When the connection between the first movable plate 11 and the second movable plate 7 is squeezed by an external force, the deformation area 13 is reduced, so that the maximum width of the first movable plate 11 and the second movable plate 7 can be reduced, so that the fixing member 2 can be kept installed in the installation hole 5. A spiral portion 14 for installing the temperature sensor 4 is provided on the third movable plate 12, and a bending portion 6 matching the installation hole 5 is provided on both sides of the first movable plate 11, and the bending portion 6 is placed at the edge of the installation hole 5.

[0042] The spiral portion 14 is composed of a first spiral ring 15, a second spiral ring 16 and a third spiral ring 17. A first elastic area 18 is formed between the first spiral ring 15 and the second spiral ring 16, a second elastic area 20 is formed between the second spiral ring 19 and the first spiral ring 15, and an installation area 21 for the temperature sensor 4 is formed in the middle of the third spiral ring 17.

[0043] When the cylindrical temperature sensor 4 is installed, it only needs to be inserted into the installation area 21. The diameter of the installation area 21 is smaller than the diameter of the temperature sensor 4, thereby expanding the installation area 21 and keeping the third spiral ring 17 moving toward the second elastic area 20, while the second spiral ring 19 moves toward the first elastic area 18, keeping the first spiral ring 15, the second spiral ring 19 and the third spiral ring 17 to fix the temperature sensor 4.

[0044] When the symmetrically arranged third movable plate 12 is pressed, the compression area 10 is kept shrinking, and the deformation area 13 can also be shrunk. The first movable plate 11 and the second movable plate 7 can also be easily kept compressed.

[0045] When the first movable plate 11 and the second movable plate 7 are in a normal state, the maximum width of the bending portion 6 is greater than the width of the mounting hole 5 . When the first movable plate 11 and the second movable plate 7 are in a state of being subjected to force and moving toward the deformation area 13 , the maximum width of the bending portion 6 is less than the width of the mounting hole 5 .

[0046] The angle between the bent portion 6 and the first movable plate 11 is 15°-20°. The lower end of the bent portion 6 forms a contact surface 23, the two ends of the second movable plate 7 form a blocking surface 24, and a movable opening 25 is formed between the contact surface 23 and the blocking surface 24. The bent portion 6 that remains bent can be placed on the mounting hole 5, so that the fixing member 2 will not fall from the mounting hole 5 without external force.

[0047] The conductive component 3 is arranged in rotational symmetry. The conductive component 3 is installed at the lower end of the fixed plate 1. The conductive component 3 is composed of a mounting member 26, a rotating member 27, a locking member 28 and a deforming member 29. The mounting member 26 is fixed to the lower end of the fixed plate 1 by a bolt 30. A through hole 31 for accommodating the rotating member 27 is provided in the middle of the mounting member 26. The length of the through hole 31 is greater than the length of the rod body 32. The side surface 35 of the hexagonal portion 33 contacts the end surface 34 of the mounting member 26. The rotating member 27 is composed of a hexagonal portion 33 and a rod body 32. The rod body 32 is installed in the through hole 31. A threaded hole 36 is provided in the middle of the rod body 32. The locking member 28 is composed of a threaded portion 37 and a blocking portion 39. The threaded portion 37 is installed in cooperation with the threaded hole 36.

[0048] The deformable member 29 is composed of a deformable plate 40 and a symmetrically arranged fixed arm 41. The deformable plate 40 is provided with a through hole 42 through which a threaded portion 37 passes. The diameter of the through hole 42 is larger than the diameter of the threaded portion 37 but smaller than the diameter of the blocking portion 39, so that the through hole 42 allows the threaded portion 37 to pass through, but prevents the blocking portion 39 from passing through the through hole 42.

[0049] A movable space 43 is formed between the symmetrically arranged fixed arms 41 . The temperature sensor 4 is provided with a first pin 44 and a second pin 45 . The first pin 44 is provided with a first bending section 46 . The second pin 45 is provided with a second bending section 47 . The first bending section 46 and the second bending section 47 are arranged in the movable space 43 .

[0050] The fixing arm 41 is provided with a first elastic portion 48 and a second elastic portion 49, a fixing opening 50 is formed between the first elastic portion 48 and the second elastic portion 49, symmetrical fixing portions 51 are provided at both ends of the fixing opening 50, a locking opening 52 is formed between the fixing portions 51, and the locking opening 52 is connected to the fixing opening 50. A conductive member 53 is provided in the fixing opening 50, and symmetrically arranged extension portions 54 are provided on the mounting member 26, a receiving opening 55 for placing the deformable member 29 is formed between the extension portions 54, and a positioning hole 56 for fixing the deformable plate 40 is provided on the extension portion 54.

[0051] The conductive member 53 is composed of a mounting body 57 matched with the fixing opening 50 and a locking block 58 matched with the locking opening 52. A conical hole 59 is provided on the mounting body 57, and a conical head 60 is provided on the first bending section 46 and the second bending section 47. The conical head 60 matches the conical hole 59, so that the first pin 44 and the second pin 45 can better contact and conduct electricity with the conductive member 53.

[0052] A locking groove 61 is provided on the inner wall of the fixing opening 50, and a locking protrusion 62 is provided on the mounting body 57 to cooperate with the locking groove 61. The locking protrusion 62 is provided with an inclined pushing surface 63 and a horizontal locking surface 64. The locking protrusion 62 can restrict the conductive member 53 in the fixing opening 50.

[0053] When the hexagonal portion 33 is rotated, the rotating member 27 is rotated, so that the threaded hole 36 cooperates with the threaded portion 37, and the blocking portion 39 is kept pulling the deformation plate 40, so that the deformation plate 40 fits with the arc surface 65 of the accommodating opening 55, so as to keep the front end of the fixed arm 41 on the deformation plate 40 moving toward the middle of the active space 43, and keep the conical hole 59 in contact with the conical head 60 on the first pin 44 and the second pin 45, so as to realize the electrical connection of the temperature sensor 4.

[0054] The mounting body 57 is provided with a conductive hole 22 , and a screw 38 is provided in the conductive hole 22 . An external electric wire is inserted into the conductive hole 22 , and then fixed by the screw 67 .

[0055] Furthermore, the spiral portion 14 on the fixing member 2 is rotationally symmetrically arranged, and the lengths of the two ends are different, so that the temperature of different positions of the inverter can be monitored according to actual needs, and one fixing member 2 can be used to install temperature sensors 4 at two different positions.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A platinum thermal resistor temperature sensor for photovoltaic inverter, characterized in that: include: A fixing plate, wherein a mounting hole is provided on the fixing plate, A fixing member is arranged in the mounting hole, the fixing member is composed of a symmetrically arranged first movable plate, a second movable plate and a third movable plate, the upper ends of the symmetrically arranged first movable plates are connected, the second movable plate is located at the lower end of the first movable plate, the third movable plate is located at the lower end of the second movable plate, a deformation area is formed between the symmetrically arranged first movable plate and the second movable plate, a compression area is formed between the symmetrically arranged third movable plates, a spiral portion for installing a temperature sensor is provided on the third movable plate, and bending portions cooperating with the mounting hole are provided on both sides of the first movable plate, and the bending portions are placed at the edge of the mounting hole, and a conductive component arranged in rotational symmetry, the conductive component being installed at the lower end of the fixed plate, the conductive component being composed of a mounting member, a rotating member, a locking member and a deforming member, the mounting member being fixed to the lower end of the fixed plate by bolts, a through hole for accommodating the rotating member being provided in the middle of the mounting member, the rotating member being composed of a hexagonal portion and a rod body, the rod body being installed in the through hole, a threaded hole being provided in the middle of the rod body, the locking member being composed of a threaded portion and a blocking portion, the threaded portion being installed in cooperation with the threaded hole, the deforming member being composed of a deforming plate and a symmetrically arranged fixed arm, the threaded portion passing through the through hole being provided on the deforming plate The through hole has a diameter larger than that of the threaded portion but smaller than that of the blocking portion, and a movable space is formed between the symmetrically arranged fixing arms, and the fixing arms are provided with a first elastic portion and a second elastic portion, and a fixing opening is formed between the first elastic portion and the second elastic portion, and symmetrical fixing portions are provided at both ends of the fixing opening, and a locking opening is formed between the fixing portions, and the locking opening is communicated with the fixing opening, and a conductive member is provided in the fixing opening, and symmetrically arranged extension portions are provided on the mounting member, and a receiving opening for placing a deformable member is formed between the extension portions, and a positioning hole for fixing the deformable plate is provided on the extension portion, The temperature sensor is provided with a first pin and a second pin, the first pin is provided with a first bending section, the second pin is provided with a second bending section, and the first bending section and the second bending section are arranged in the activity space. When the first movable plate and the second movable plate are in a normal state, the maximum width of the bent portion is greater than the width of the mounting hole; when the first movable plate and the second movable plate are in a state of being subjected to force and moving toward the deformation area, the maximum width of the bent portion is less than the width of the mounting hole; The spiral portion consists of a first spiral ring, a second spiral ring and a third spiral ring. A first elastic area is formed between the first spiral ring and the second spiral ring, a second elastic area is formed between the second spiral ring and the first spiral ring, and the middle of the third spiral ring forms an installation area for the temperature sensor.

2. The platinum thermal resistor temperature sensor for photovoltaic inverter according to claim 1, characterized in that: The angle between the bending portion and the first movable plate is 15°-20°.

3. The platinum thermal resistor temperature sensor for photovoltaic inverter according to claim 1, characterized in that: The lower end of the bent portion forms a contact surface, the two ends of the second movable plate form blocking surfaces, and a movable opening is formed between the contact surface and the blocking surface.

4. The platinum thermal resistor temperature sensor for photovoltaic inverter according to claim 1, characterized in that: The conductive member is composed of a mounting body matched with the fixing opening and a locking block matched with the locking opening.

5. The platinum thermal resistor temperature sensor for photovoltaic inverter according to claim 4, characterized in that: The mounting body is provided with a tapered hole, and the first bending section and the second bending section are provided with tapered heads, and the tapered heads are matched with the tapered hole.

6. The platinum thermal resistor temperature sensor for photovoltaic inverter according to claim 4, characterized in that: A locking groove is arranged on the inner wall of the fixing opening, a locking protrusion matched with the locking groove is arranged on the mounting body, and an inclined pushing surface and a horizontal locking surface are arranged on the locking protrusion.

7. The platinum thermal resistor temperature sensor for photovoltaic inverter according to claim 4, characterized in that: The mounting body is provided with a conductive hole, and a screw is arranged in the conductive hole.

8. The platinum thermal resistor temperature sensor for photovoltaic inverter according to claim 1, characterized in that: The length of the through hole is greater than the length of the rod body, and the side surface of the hexagonal portion contacts the end surface of the mounting member.

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