CN104793125B - A kind of test device of photovoltaic combiner box current divider measurement plate - Google Patents

Abstract

The invention relates to a testing device for a shunt measuring board of a photovoltaic combiner box, comprising a base, an input test probe and an output test probe, the input test probe and the output test probe are vertically fixed on the base, and the input test probe The upper end is mated with the bottom interface of the input terminal of the board to be measured, the upper end of the output test probe is mated with the bottom interface of the output terminal of the board to be measured, and the lower end of the input test probe and the output test probe are connected to the measurement wire. Effect: This scheme fixes the test probe on the base, connects the test probe to the test wire, inserts the measurement board on the test probe during the test, and completes the test when the power is turned on, which improves the test efficiency. At the same time, the structure of the test device is simple , easy to produce and apply. In addition, the design of the double-layer base allows the test leads to be placed in the gap between the upper and lower base surfaces, reducing the possibility of operators touching the leads and improving the safety of the testing process.

Description

A test device for measuring board of photovoltaic combiner box shunt

technical field

The invention relates to a testing device for a measuring board of a shunt of a photovoltaic combiner box.

Background technique

The photovoltaic combiner box can connect a certain number of photovoltaic cells with the same specifications in series to form a photovoltaic series, and then connect several photovoltaic series in parallel to the combiner box. , Photovoltaic inverters, AC power distribution cabinets, etc., are used together to form a complete photovoltaic power generation system.

The traditional test method of photovoltaic combiner box shunt measurement board requires a professional tester to dismantle the wiring. The dismantling work is carried out on an ordinary exposed workbench without any protective measures, and there is a risk of electric shock. As shown in Figure 1, the common measurement board has 9 2P terminals. The measured wiring and disassembly time is about 5 minutes. Due to human factors, errors in the wiring process are inevitable. According to incomplete statistics, the error rate reaches 5%. If it is found in time before power on, it will only cause rework of dismantling and wiring, otherwise, it will cause damage to the measurement board. It can be seen that the traditional method of wiring and dismantling is not only dangerous and hidden, but also not efficient, but also very risky.

At present, the testing efficiency of existing test devices for photovoltaic combiner box measurement boards is relatively low. The base of the chute is extended in the direction, and the rear end of the chute has an input wiring board, and elastic input probes are inserted vertically on the input wiring board, and the rear end of each input probe is a terminal for connecting with an input test line. The front end of the chute has an output wiring unit corresponding to the output terminal group of the measurement board module. The output wiring unit includes an output wiring board, and elastic output probes are inserted vertically on the output wiring board. The front ends of each output probe are for Terminals to which the output test leads are connected. The test device of this scheme mainly includes the following three steps in the specific implementation: first, the front port of the chute is opened by rotating the output terminal block, and again, the board to be measured is inserted into the chute horizontally from the front port of the chute , and finally, plug the input terminals with the corresponding input probes respectively. It can be seen that in the test process of this scheme, the above steps are required for each test board. There are many test steps and the test process is more complicated, which will lead to The test efficiency is low.

Moreover, in order to ensure that the measuring board is firmly installed in the chute of the base, the test device also needs to add structures such as fastening screws, wiring boards, and slide bars, resulting in a relatively complicated structure of the device as a whole, which is not conducive to actual production.

In addition, since the test wires connected to the probes are on both sides of the test device, during the test process, it is very likely that the operator will touch the wires by mistake due to irregular operation, thereby causing safety accidents.

Contents of the invention

The purpose of the present invention is to provide a test device for testing the measurement board of a photovoltaic combiner box, which is used to solve the problems of low efficiency and complex structure of the existing test device.

To achieve the above object, the solution of the present invention includes:

A test device for testing a photovoltaic combiner box measurement board, comprising a base, an input test probe and an output test probe, the input test probe and the output test probe are vertically fixed on the base, and the input test probe The upper end is matched with the bottom interface of the input terminal of the board to be measured, and the upper end of the output test probe is mated with the bottom interface of the output terminal of the board to be measured. The lower end of the input test probe and the output test probe are connected to the measurement wire, and the input test probe The installation position of the and output test probes matches the position of the input and output terminals of the board to be measured.

Positioning probes for fixing the board to be measured are also installed on the base, the positioning probes are vertically fixed on the base, the installation position matches the mounting hole position of the measurement board, and the number of installations is at least two.

An adjustable unlocking baffle and a frame buckle for fixing the board to be measured are installed on the input test probe side of the base, and an adjustable unlocking baffle and a rack buckle for fixing the board to be measured are installed on the output test probe side.

The base also includes an insulating lower base plate, and the base and the lower base plate are supported and connected by insulating pillars.

The positioning probe is composed of two parts, an upper end and a lower end, the upper end cooperates with the lower end sleeve, and a spring is arranged vertically inside the lower end.

The test probe is composed of two parts, an upper end and a lower end, and the upper end and the lower end are movably connected by a telescopic device.

The upper end of the positioning probe is a conical structure, and the radius of the lower bottom surface of the conical structure is larger than the radius of the installation hole of the board to be measured.

Beneficial effects of the present invention: the solution fixes the test probe on the base, the test probe is connected to the test wire, the measurement board is plugged into the test probe during the test, and the test can be completed when the power is turned on. The test of a measurement board saves operation steps and improves the test efficiency. At the same time, the test device omits the clamping structure for fixing the test terminal and the measurement board, simplifies the structure of the test device, and is easy to produce and apply. In addition, the design of the double-layer base allows the test leads to be placed in the gap between the upper and lower base surfaces, reducing the possibility of operators touching the leads and improving the safety of the testing process.

Description of drawings

Figure 1 is a structural diagram of the measurement board.

FIG. 2 is a structural diagram of a testing device in Example 1. FIG.

FIG. 3 is a structural diagram of a testing device of Example 2. FIG.

FIG. 4 is a structural diagram of a testing device in Example 3. FIG.

FIG. 5 is a structural diagram of a testing device of Example 4. FIG.

6-8 are schematic diagrams of assembly of Embodiment 4.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Example 1:

As shown in Figure 2, the test device of the present embodiment comprises a base 1, an input test probe 2 and an output test probe 3, the input test probe and the output test probe are vertically fixed on the base, and the upper end of the input test probe It is matched with the bottom interface of the input terminal of the board to be measured, and the upper end of the output test probe is mated with the bottom interface of the output terminal of the board to be measured. The lower end of the input test probe and the output test probe are connected to the measurement wire, and the input test probe and The installation position of the output test probe matches the position of the input and output terminals of the board to be measured.

During the test, connect the interface at the bottom of the terminal of the board to be measured with the corresponding test probe, and plug the board to be measured into the test probe of the test device, and the test can be carried out when the power is turned on. After the test is completed, the measurement board can be pulled out from the test probe, and the test work of the next measurement board can be carried out. The test work can be completed only through the step of plugging and unplugging, which greatly reduces the test efficiency of the test device, and at the same time , since only the test probes and a base related to the test of the measurement board are used, the structure of the device is also simplified, which is beneficial to production and manufacture.

As for the fixation of the measuring board, the method of manually pressing and fixing the measuring board can be adopted during the test, or the fixing equipment other than the testing device can be used to fix the measuring board, and the specific process will not be repeated here.

Example 2:

As shown in Figure 3, this embodiment is basically the same as Embodiment 1, and the part that differs from it is: in this embodiment, a positioning probe 4 for accurately docking the measuring board is arranged on the base 1, and the installation of the positioning probe The position corresponds to the installation hole of the measurement board. The number of positioning probes installed is at least two, and the positioning probes are installed on both sides of the measurement board, and the number of positioning probes on both sides is not limited.

In addition, in this embodiment, the base is composed of upper and lower insulating panels 5, 6 and insulating pillars 7, and the insulating pillars are supported between the upper and lower insulating panels so that a certain gap is formed between the upper and lower insulating panels. Place the test leads connected to the test probes between the upper and lower insulation panels, so that the operator is not easy to touch the test leads and achieve the purpose of safety testing.

Of course, the base can also adopt the structure of a layer of insulating panel. At this time, the test probe is plugged on the base, including the part on the upper side of the insulating panel and the part on the lower side of the insulating panel, wherein the test probe is located on the lower side of the insulating panel. Part of it is connected with the measuring wire, so that the metal conductive part is located on the lower side of the plexiglass plate, which can avoid the exposed wire, thereby preventing the tester from accidental electric shock accidents during the test, and fully ensuring the personal safety of the tester.

Example 3:

As shown in Figure 4, this embodiment is basically the same as Embodiment 2, the difference is that the base adopts the structure of a layer of insulating panel. At this time, the test probes are inserted on the base, including the part located on the upper side of the insulating panel. And the part located on the lower side of the insulating panel, wherein the part of the test probe located on the lower side of the insulating panel is connected with the measuring wire, so that the metal conductive part is located on the lower side of the plexiglass plate, so that the exposed wire can be avoided, so that during the test Preventing testers from accidental electric shock accidents can also ensure the personal safety of testers.

In addition, in this embodiment, an unlocking baffle 9 and a rack buckle 8 are arranged on the upper insulating panel of the base, and the unlocking baffle and the rack buckle here are used to fix the measuring board. The installation position of the rack buckle is on the outside of the input test probe and the output test probe. The outer side and the outer side of the output test probe, wherein at least one rack buckle is installed on the outer side of the input test probe and the outer side of the output test probe, and the unlocking baffle is fixedly installed on the rack buckle. The unlocking baffle 9 is linked with the deck 10 in the rack buckle 8 .

The unlocking baffle is made of a long plexiglass plate, the rack buckle and the unlocking baffle are fixed with rivets, and the rack buckle is directly fastened to the upper base of the test device with screws.

Example 4:

A photovoltaic combiner box shunt measuring board test device in this embodiment includes an adjustable unlocking baffle, a frame buckle, a positioning probe, a test probe and a base, and the base is composed of upper and lower insulating panels and insulating pillars , The frame buckle, the positioning probe and the test probe are installed on the insulating panel on the upper side of the safety protection base, and the installation position matches the structure of the board to be measured.

As shown in Figure 5, the test probe in the test device of the present invention is installed on the plexiglass plate at the upper end of the safety protection base, and its installation position corresponds to the connection terminal of the board to be measured one by one, and one end of the test probe is directly connected to the test power supply Welded together, the lower end of the test probe is connected with the measurement wire, so that the metal conductive part is embedded in the safety protection base, which can prevent the wire from being exposed, thereby preventing the tester from accidental electric shock during the test and fully ensuring the test. personal safety of personnel.

In this embodiment, a plexiglass plate is used as the upper insulating panel of the base. As other implementations, the base may also use upper and lower panels made of other insulating materials.

As shown in Figure 6-8, during the actual test, align the mounting holes of the measurement board with the positioning probes, place the measurement board on the positioning probes, and fix it on the rack buckle. Due to the limitation of the positioning probe and the frame buckle, the measurement board will not loosen in the four directions of up and down, left and right, which is beneficial to the use in actual testing.

When measuring, put the four mounting holes of the measuring board on the positioning probe, pull the unlocking baffle, and make the card seat on the frame buckle move outward, and then apply a vertical pressure to the measuring board to make the seat on the base The probe is accurately docked with the terminal, and the unlocking baffle is released at the same time, the card seat on the rack buckle is restored, and the positioning and installation of the measurement board is completed.

This test device can allow testers to realize the connection and separation of all measurement board terminals and test wires at the same time, because one end of the test probe is directly welded to the test power supply connection, and the other end is directly connected to the welding pin of the measurement board. The measurement board is plugged into the test probe of the test device, and there is no need for the tester to use a screwdriver to connect or separate each test wire with the measurement board one by one during the test, thereby greatly improving the test efficiency. On the other hand, since the test leads are connected to the probes of the test device, and the probes of the test device are in one-to-one correspondence with the terminals of the measurement board, if the measurement board is not inserted into the test device in the prescribed manner, the probes of the test device will be in contact with the measurement board terminals. Serious misalignment of the terminals of the board means that the measurement board and the test device cannot be positioned correctly, thereby fundamentally avoiding the possibility of wrong wiring.

In addition, compared with ordinary pins, the probe used in this embodiment has a spring structure inside, and the needle head part can achieve a certain degree of expansion and contraction. In this embodiment, the needle head part has a telescopic stroke of 5mm. The amount of expansion and contraction of the needle can be adjusted according to actual application conditions. In this way, the test device can be flexibly docked with the terminals of the measurement board. When the terminals of the measurement board are not strictly welded in a straight line, the telescopic needle of the probe can ensure good contact between the probe and the terminals of the measurement board, thereby realizing the test. Flexible docking of the device with the measurement board terminals. In other words, if the precise welding of the terminals of the measurement board can be ensured, a probe without telescopic range can also be used.

When the measuring board reaches the fixed position, loosen the adjustable unlocking baffle, fix the measuring board, and power on to complete the test.

Specific embodiments have been given above, but the present invention is not limited to the described embodiments. The basic idea of the present invention lies in the above-mentioned basic scheme. For those of ordinary skill in the art, according to the teaching of the present invention, it does not need to spend creative labor to design various deformation models, formulas, and parameters. Changes, modifications, substitutions and variations to the implementations without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.

Claims (5)

1. A test device for testing photovoltaic combiner box measuring board, comprising base, input test probe and output test probe, it is characterized in that, described input test probe and output test probe are vertically fixed on the base , the upper end of the input test probe is matched with the bottom interface of the input terminal of the board to be measured, the upper end of the output test probe is matched with the bottom interface of the output terminal of the board to be measured, and the lower end of the input test probe and the output test probe are connected for measurement The installation positions of the wires, input test probes and output test probes match the positions of the input and output terminals of the board to be measured; positioning probes for fixing the board to be measured are also installed on the base, and the positioning probes are vertically It is directly fixed on the base, and its installation position matches the installation hole position of the measurement board, and the number of installations is at least two; the side of the input test probe on the base is installed with an adjustable fixed baffle for fixing the board to be measured and The rack buckle, the adjustable fixed baffle and the rack buckle for fixing the plate to be measured are installed on the side of the output test probe; Move the fixed baffle to make the card seat on the rack buckle move outwards to open, loosen the fixed baffle, and the card seat on the rack buckle recovers. 2 . A test device for testing a photovoltaic combiner box measuring board according to claim 1 , wherein the base further comprises an insulating lower base plate, and the base and the lower base plate are supported and connected by insulating pillars. 3 . 3. A test device for testing the measuring board of a photovoltaic combiner box according to claim 2, wherein the positioning probe is composed of an upper end and a lower end, the upper end is matched with the lower end socket, and the inner part of the lower end is Springs are arranged in the vertical direction. 4. A test device for testing a photovoltaic combiner box measuring board according to claim 2, wherein the test probe is composed of an upper end and a lower end, and the upper end and the lower end are movably connected by a telescopic device. 5. A kind of testing device for testing photovoltaic combiner box measuring board according to claim 3 or 4, characterized in that, the upper end of the positioning probe is a conical structure, and the radius of the lower bottom surface of the conical structure is greater than The radius of the mounting hole of the board to be measured.