CN204214934U - A kind of multichannel current detecting tool of current sample plate of photovoltaic combiner box - Google Patents

Abstract

A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box relates to the technical field of current detection fixtures. Through multiple Hall current sensors, through the docking of two sets of conductive parts, a conductive channel can be quickly formed, and a conductive channel can be passed through multiple Hall current sensors to simultaneously detect multiple channels on the current sampling board at one time. current, which simplifies the test steps of sampling current, shortens the test time and improves the test efficiency.

Description

A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box

technical field

The utility model relates to the technical field of current detection fixtures, in particular to a multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box.

Background technique

Now the photovoltaic plates are connected to the photovoltaic inverter after the charge is collected together through the combiner box. The photovoltaic input array of the combiner box is mostly about 10 to 20 channels. In order to realize intelligence, the combiner box has the function of monitoring the current of the photovoltaic plate. All the current from the photovoltaic plate is processed by the DSP chip and communicated with the 485 bus to the The upper computer realizes the monitoring. Generally, the combiner box current sampling board is used to collect each current, and then check whether each current is accurate. The component used for auxiliary detection on the combiner box current sampling board is the Hall current sensor. The Hall current sensor is in accordance with the photovoltaic input array. The number of channels is matched, and each channel is matched with a Hall current sensor. The arrangement of the Hall current sensors on the current sampling board is generally such that two adjacent rows of Hall current sensors are staggered from each other.

In the past, the method of testing each current was to place a energized wire in the center of the Hall current sensor corresponding to the first current, and check whether the current is accurate on the first page of the current display device. After testing the first current, Put the energized wire into the center of the Hall current sensor corresponding to the second current, and check whether the current is correct on the second page of the current display device, and so on until all the currents are tested. This method has cumbersome steps, long use time and low test efficiency.

Contents of the invention

The purpose of this utility model is to avoid the deficiencies in the prior art and provide a multi-channel current detection fixture for the current sampling board of the photovoltaic combiner box. The multi-channel current detection fixture for the current sampling board of the photovoltaic combiner box can The test steps of sampling current are simplified, the test time is shortened, and the test efficiency is improved.

The purpose of this utility model is achieved through the following technical solutions:

Provided is a multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box, which includes two groups of conductive parts, the two groups of conductive parts are butted to form a conductive channel, and the conductive channel passes through a plurality of Hall current sensors.

Specifically, a multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box is used to detect the induced current of two rows of Hall current sensors on the current collection board. The number of Hall current sensors is N, the distance between the centers of two adjacent Hall current sensors of the same row of Hall current sensors is M, and the distance between the phase backs of two adjacent rows of Hall current sensors is L. In the utility model , also includes two boards, the structure of the two boards is the same, and the conductive part arranged on one board includes a first conductive terminal, a first wire, a second conductive terminal for external power supply and a second wire ;

The number of the first conductive terminals is (2N+1), and the number of the first conductive wires is N;

The first conductive terminal is arranged on one end surface of the board, the distance between two adjacent first conductive terminals is M/2, and the length of the first conductive terminal is greater than or equal to L/2;

Each of the first wires is connected to and only connected to two adjacent conductive terminals so that 2N first conductive terminals form N conductive channels;

The one second conductive terminal is disposed on the other end surface of the board, and the second wire communicates with the second conductive terminal and only the (2N+1)th conductive terminal.

Specifically, a multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box is used to detect the induced current of two rows of Hall current sensors on the current collection board. The number of Hall current sensors is N, the distance between the centers of two adjacent Hall current sensors of the same row of Hall current sensors is M, and the distance between the phase backs of two adjacent rows of Hall current sensors is L. In the utility model , including two boards, respectively a first board and a second board, the conductive component includes a first conductive terminal, a first wire, two second conductive terminals and two second wires;

The number of 2 (N-1) first conductive terminals is arranged on one end surface of the first board, and the distance between two adjacent first conductive terminals is M/2, and the first conductive terminals The length of is greater than or equal to L/2;

Each of the first wires is connected and only connected to two adjacent first conductive terminals in the 2nd to 2(N-1)-1 first conductive terminals, so that the 2(N-1)-2 first conductive terminals The conductive terminals form (N-1) conductive channels;

The two second conductive terminals are arranged on the other end surface of the first board;

One of the second wires is connected to the first first conductive terminal and one of the second conductive terminals; the other second wire is connected to the second (N-1) first conductive terminal and another said second conductive terminal;

The number of 2N first conductive terminals is arranged on one end surface of the second plate, the distance between two adjacent first conductive terminals is M/2, and the length of the first conductive terminals is greater than or equal to L/2;

Each of the first wires is connected to and only connected to two adjacent first conductive terminals among the first conductive terminals, so that 2N first conductive terminals form N conductive channels.

Specifically, the board is a printed circuit board, and the first wire is a conductive layer on the printed circuit board.

Specifically, the second conductive wire is a conductive layer on a printed circuit board.

Specifically, the first conductive terminal is a hard conductive terminal.

Specifically, the board is provided with support feet for supporting the conductive component at the center of the Hall current sensor during testing.

Specifically, the first conductive terminal is a strip-shaped conductive terminal.

Specifically, the first conductive terminal is a cylindrical conductive terminal.

Beneficial effects of the utility model: the utility model includes two groups of conductive parts, the two groups of conductive parts are connected to form a conductive channel, and the conductive channel passes through a plurality of Hall current sensors, and the two groups of conductive parts are connected, It can realize the rapid formation of conductive channels, pass through multiple Hall current sensors through one conductive channel, and simultaneously detect multiple currents on the current sampling board at one time, simplify the test steps of sampling current, shorten the test time, and improve the test efficiency. efficiency.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the embodiment in the accompanying drawing does not constitute any restriction to the present utility model, for those of ordinary skill in the art, under the premise of not paying creative work, also can obtain according to following accompanying drawing Additional drawings.

Fig. 1 is a structural schematic diagram of a multi-channel current detection fixture of a current sampling board of a photovoltaic combiner box of the present invention.

Fig. 2 is a schematic diagram of the use state of the multi-channel current detection fixture of the current sampling board of a photovoltaic combiner box of the present invention.

Fig. 3 is a schematic view of another angle of use of the multi-channel current detection fixture of the current sampling board of a photovoltaic combiner box of the present invention.

Fig. 4 is a third visual use state diagram of the multi-channel current detection fixture of the current sampling board of a photovoltaic combiner box of the present invention.

Fig. 5 is a structural schematic diagram of the supporting legs of the multi-channel current detection fixture of the current sampling board of a photovoltaic combiner box of the present invention.

Fig. 6 is a schematic diagram of another embodiment of a multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box of the present invention.

Figures 1 to 5 include:

1—printed circuit board, 11—the first conductive terminal, 12—the first wire, 13—the second conductive terminal, 14—the second wire;

2 - supporting feet;

3——current sampling board, 31——Hall current sensor;

Figure 6 includes:

4 - the first board;

5 - Second board.

Detailed ways

The utility model is further described in conjunction with the following examples.

Example 1.

A detection fixture for a current sampling board of a photovoltaic combiner box in this embodiment, as shown in Figures 1 to 4, includes two groups of conductive parts, and the two groups of conductive parts are connected to form a conductive channel, and the conductive channel can be Pass through all Hall current sensors 31 at the same time.

In this embodiment, through the docking of two groups of conductive parts, a conductive channel can be quickly formed, and a conductive channel can pass through multiple Hall current sensors 31 at the same time, and multiple currents on the current sampling board 3 can be detected simultaneously at one time, simplifying The test procedure of sampling current is simplified, the test time is shortened, and the test efficiency is improved.

Specifically, it is used to detect the induced current of two rows of Hall current sensors 31 on the current acquisition board. The two rows of Hall current sensors 31 are arranged in a staggered manner. The distance between the centers of two adjacent Hall current sensors 31 of the sensor 31 is M, and the distance between the opposite sides of two adjacent rows of Hall current sensors 31 is L. In this embodiment, two boards with the same structure are also included. When a board is in use, the front side of the upper board and the reverse side of the lower board are docked, and the conductive parts on one board include a first conductive terminal 11, a first wire 12, a second conductive terminal for external power supply 13 and a second wire 14;

The number of the first conductive terminals 11 is (2N+1), and the number of the first conductive wires 12 is N;

The first conductive terminal 11 is arranged on an end face of the plate, and the distance between two adjacent first conductive terminals 11 is M/2. Since the two rows of Hall current sensors 31 are arranged in a staggered manner, the upper and lower two The distance between two adjacent Hall current sensors 31 is M/2, and the distance between two adjacent first conductive terminals 11 is set as M/2, so that one of the two adjacent first conductive terminals 11 passes through Pass through the Hall current sensor 31, the other does not pass through the Hall current sensor 31, passes through the first conductive terminal 11 of the upper row of Hall current sensors 31 and does not pass through the first conductive terminal 11 of the lower row of Hall current sensors 31 connected to form a conductive path.

The length of the first conductive terminal 11 is greater than or equal to L/2, so that the first conductive terminal 11 of the upper board and the first conductive terminal 11 of the lower board have sufficient length to realize butt joint.

Each of the first wires 12 is connected and only connected to two adjacent conductive terminals so that 2N first conductive terminals 11 form N conductive channels, and the N conductive channels formed by the upper plate and the N conductive channels formed by the lower plate The channels are staggered butted to form a conductive channel.

The one second conductive terminal 13 is arranged on the other end surface of the board, and the second wire 14 communicates and only connects the second conductive terminal 13 and the (2N+1)th conductive terminal, and the two boards The two second conductive terminals 13 are used to respectively connect the positive pole and the negative pole of the power supply, and conduct the power supply with the conductive channel.

Specifically, the board is a printed circuit board 1 , and the first wire 12 is a conductive layer on the printed circuit board 1 .

Specifically, the second conductive wire is a conductive layer on the printed circuit board 1 . Utilizing the printed circuit board 1 and the conductive layer can make the two boards more beautiful and durable.

Specifically, the first conductive terminal is a hard conductive terminal.

Specifically, as shown in FIG. 5 , the board is provided with a supporting foot 2 for supporting the conductive component at the center of the Hall current sensor 31 during testing.

Specifically, the first conductive terminal is a strip-shaped conductive terminal, which can smoothly pass through the center of the Hall current sensor 31 .

Specifically, the first conductive terminal is a cylindrical conductive terminal with better conductivity.

Example 2.

The other structure of this embodiment is the same as that of Embodiment 1, the difference is that, as shown in Figure 6, a detection fixture for the current sampling board 3 of a photovoltaic combiner box is used to detect the two rows of Hall on the current collection board. For the induced current of the current sensor 31, two rows of Hall current sensors 31 are arranged in a staggered manner, the number of Hall current sensors 31 in one row is N, and the center distance between two adjacent Hall current sensors 31 of the same row of Hall current sensors 31 is M, and the distance between the opposite sides of two adjacent rows of Hall current sensors 31 is L. In this embodiment, two plates are included, namely the first plate 4 and the second plate 5, and the conductive parts include the first conductive a terminal 11, a first wire 12, two second conductive terminals 13 and two second wires 14;

The number of 2 (N-1) first conductive terminals 11 is arranged on one end surface of the first board 4, and the distance between two adjacent first conductive terminals 11 is M/2. The length of a conductive terminal 11 is greater than or equal to L/2;

Each of the first wires 12 is connected and only connected to two adjacent first conductive terminals 11 in the 2nd to 2(N-1)-1 first conductive terminals 11, so that 2(N-1)-2 The first conductive terminals 11 form (N-1) conductive channels;

The two second conductive terminals 13 are arranged on the other end surface of the first board 4;

One of the second conductive wires 14 is connected to the first first conductive terminal 11 and one of the second conductive terminals 13; the other second conductive wire 14 is connected to the second (N-1) first a conductive terminal 11 and another said second conductive terminal 13;

The number of 2N first conductive terminals 11 is arranged on one end surface of the second board 5, the distance between two adjacent first conductive terminals 11 is M/2, and the distance between the first conductive terminals 11 is The length is greater than or equal to L/2;

Each of the first wires 12 communicates with and only communicates with two adjacent first conductive terminals 11 among the first conductive terminals 11 , so that 2N first conductive terminals 11 form N conductive channels.

The two second conductive terminals 13 for connecting to the power supply of the detection jig with this structure are located on the same side of one of the boards, which is more convenient to connect to the power supply.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (9)

1. A multi-channel current detection fixture of a current sampling board of a photovoltaic combiner box, characterized in that: it includes two groups of conductive parts, and the two groups of conductive parts are butted to form a conductive channel, and the conductive channel passes through multiple channels Er current sensor. 2. The multi-channel current detection fixture of the current sampling board of a kind of photovoltaic combiner box as claimed in claim 1, is characterized in that: it is used to detect the induced current of two rows of Hall current sensors on the current collection board, two rows Hall current sensors are staggered, the number of Hall current sensors in a row is N, the distance between the centers of two adjacent Hall current sensors in the same row is M, and the phase distance between two adjacent rows of Hall current sensors is M. The distance on the back side is L, and it also includes two plates, the structure of which is the same as that of the two plates, and the conductive part provided on one plate includes a first conductive terminal, a first wire, and a second conductive terminal for external power supply and a second conductor; The number of the first conductive terminals is (2N+1), and the number of the first conductive wires is N; The first conductive terminal is arranged on one end surface of the board, the distance between two adjacent first conductive terminals is M/2, and the length of the first conductive terminal is greater than or equal to L/2; Each of the first wires is connected to and only connected to two adjacent conductive terminals so that 2N first conductive terminals form N conductive channels; The one second conductive terminal is disposed on the other end surface of the board, and the second wire communicates with the second conductive terminal and only the (2N+1)th conductive terminal. 3. The multi-channel current detection fixture of the current sampling board of a kind of photovoltaic combiner box as claimed in claim 1, characterized in that: it is used to detect the induced current of two rows of Hall current sensors on the current collection board, two rows Hall current sensors are staggered, the number of Hall current sensors in a row is N, the distance between the centers of two adjacent Hall current sensors in the same row is M, and the phase distance between two adjacent rows of Hall current sensors is M. The distance on the back is L, which includes two plates, respectively a first plate and a second plate, and the conductive component includes a first conductive terminal, a first wire, two second conductive terminals and two second wires; The number of 2 (N-1) first conductive terminals is arranged on one end surface of the first board, and the distance between two adjacent first conductive terminals is M/2, and the first conductive terminals The length of is greater than or equal to L/2; Each of the first wires is connected and only connected to two adjacent first conductive terminals in the 2nd to 2(N-1)-1 first conductive terminals, so that the 2(N-1)-2 first conductive terminals The conductive terminals form (N-1) conductive channels; The two second conductive terminals are arranged on the other end surface of the first board; One of the second wires is connected to the first first conductive terminal and one of the second conductive terminals; the other second wire is connected to the second (N-1) first conductive terminal and another said second conductive terminal; The number of 2N first conductive terminals is arranged on one end surface of the second plate, the distance between two adjacent first conductive terminals is M/2, and the length of the first conductive terminals is greater than or equal to L/2; Each of the first wires is connected to and only connected to two adjacent first conductive terminals among the first conductive terminals, so that 2N first conductive terminals form N conductive channels. 4. A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box according to any one of claims 2 or 3, wherein the board is a printed circuit board, and the first wire is on A conductive layer on a printed circuit board. 5. A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box according to claim 4, wherein the second conductive wire is a conductive layer on a printed circuit board. 6. A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box according to any one of claims 2 or 3, wherein the first conductive terminal is a hard conductive terminal. 7. A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box according to any one of claims 2 or 3, characterized in that: the board is provided with a device for supporting the conductive component in the Huo center the support leg of the current sensor. 8. A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box according to any one of claims 2 or 3, wherein the first conductive terminal is a strip-shaped conductive terminal. 9. A multi-channel current detection fixture for a current sampling board of a photovoltaic combiner box according to claim 8, wherein the first conductive terminal is a cylindrical conductive terminal.