CN103353540A - Testing apparatus for testing measuring board module of photovoltaic combiner box - Google Patents

Abstract

The invention discloses a test device for testing the measurement board module of a photovoltaic combiner box. The input wiring board is equipped with elastic input probes vertically inserted on the input wiring board, and the rear end of each input probe is a terminal for connecting with the input test line; the front end of the chute has an output for connecting with the measurement board module. The output wiring unit corresponding to the terminal group, the output wiring unit includes an output wiring board, the output wiring board is vertically inserted with elastic output probes, and the front end of each output probe is a terminal for connecting with the output test line. The test device avoids repeated wiring and disconnection operations between the test line and the measurement board module to be tested, avoids the problem of wrong connection, and greatly improves the test efficiency of the measurement board module.

Description

A test device for testing photovoltaic combiner box measurement board modules

technical field

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

Background technique

In the solar photovoltaic power generation system, the photovoltaic combiner box connects a certain number of photovoltaic cells of the same specification in series to form a photovoltaic series, and then connects several photovoltaic series in parallel to the combiner box. After converging in the combiner box, through The controller, DC power distribution cabinet, photovoltaic inverter, AC power distribution cabinet, etc. are used together to form a complete photovoltaic power generation system.

As an important part of the photovoltaic combiner box - the measurement board module, its structure is shown in Figure 1, including the printed board. There are 9 2P terminals on the board surface of the printed board, and each of the 9 2P terminals is divided into two groups, one of which is The seven 2P terminals included in one group are arranged side by side at the input end of the printed board to form an input terminal group, and the two 2P terminals included in the other group are arranged side by side at the output end of the printed board to form an output terminal group. In the traditional test process of the measurement board module, a professional is required to carry out the wiring and disassembly work, that is, to connect the test lines to each 2P terminal one by one. The actual connection time is about 5 minutes, which is long, and every test A measurement board module must be re-wired, which is time-consuming and labor-intensive; in addition, due to human factors, it is inevitable that wrong connections will occur during the wiring process. If it is discovered in time before power-on, it will only result in rework of dismantling and wiring. In case of damage, the risk is high.

Contents of the invention

The purpose of the present invention is to provide a test device for testing the measurement board module of the photovoltaic combiner box, which is used to solve the time-consuming and labor-intensive problem caused by manual wiring in the existing test method.

The present invention adopts the following technical scheme: a test device for testing the measurement board module of the photovoltaic combiner box, including a base, and the base has a printed board input end extending along the front and rear directions for the measurement board module to guide horizontally from front to back Inserted chute, the rear end of the chute has an input wiring unit corresponding to the input terminal group of the measurement board module, the input wiring unit includes an input terminal mounted on the base and used to cooperate with the stop limit of the printed board Wiring board, the input wiring board is vertically inserted with elastic input probes for plugging and matching with each input terminal, the rear end of each input probe is a terminal for connecting with the input test line; the front end of the chute has It is used for the output wiring unit corresponding to the output terminal group of the measuring board module, the output wiring unit includes the printed board used to avoid the printed board when the measuring board module is inserted, and prevents the printed board from coming off after the measuring board module is inserted. The output wiring board is equipped with elastic output probes for plugging and matching with each output terminal, and the front end of each output probe is a terminal for connecting with the output test line.

The output terminal board is composed of single-connection output terminal boards whose number is consistent with the number of output terminals. Each single-connection output terminal board is respectively arranged on the base through a rotating handle assembly. The rotating handle assembly includes a The sliding rods that are slidably plugged in front and back of each single-connection output terminal board and rotated, and the handle sleeves that are fixed on the front face of the single-connection output terminal boards and are sleeved on the corresponding sliding rods, the handle sleeves and the corresponding sliding rods. A return compression spring for applying backward elastic force to the corresponding single-connection output wiring board is inserted in the gap between the rods.

The terminals of the probes protrude from the respective corresponding terminal boards, and the protruding parts are screwed with locking nuts, and the middle parts of each probes have limit bosses that are limitedly matched with the corresponding terminal boards. The limiting bosses and their corresponding locking nuts are arranged on both sides of the corresponding wiring board and cooperate with each other to realize the fixing of the corresponding probes.

Each of the probes is sheathed with more than one washer that presses between the limiting boss and the corresponding wiring board to adjust the hanging depth of the probe needle.

The input wiring board is fixedly connected to the base by fastening screws, and the holes on the input wiring board through which the corresponding fastening screws pass are long holes extending in the vertical direction to adjust the height of the probe.

The outer sides of each of the wiring boards are respectively pressed with combined terminals corresponding to the probes and formed by two external terminals connected in sequence. One of the external terminals of the combined terminal is connected to the plug-in end of the corresponding probe, and the other One external terminal is used to connect the corresponding test lead.

Using the test device with the above structure, due to the use of the chute structure on the base, the printed board of the measurement board module to be tested is inserted into the chute horizontally, which is convenient for the installation and disassembly of the measurement board module to be tested, and the two ends of the chute are respectively There are input wiring units and output wiring units corresponding to the input terminal group and output terminal group of the measurement board module to be tested, so that each test line is connected to the corresponding probe on each wiring unit in advance, avoiding the need for testing Repeated wiring and dismantling operations between the line and the measurement board module to be tested will not cause the problem of wrong wiring, thereby preventing the scrapping of the measurement board module due to wrong wiring; more importantly, because it avoids Repeated wiring and unwiring greatly improves the test efficiency of the measurement board module.

Description of drawings

Fig. 1 is the structural representation of the measuring board module to be tested;

Fig. 2 is the use status diagram of an embodiment of the present invention;

Fig. 3 is an exploded view of the present invention in Fig. 2;

Fig. 4 is a state diagram in which the output wiring board in Fig. 2 is moved forward by the working position;

Fig. 5 is a state diagram in which the output wiring board in Fig. 2 is in an avoidance position;

Fig. 6 is a state diagram of the horizontal insertion of the measurement board module to be tested;

Fig. 7 is the state diagram that the output wiring board in Fig. 2 moves forward by the avoidance position;

Fig. 8 is a state diagram of the output wiring board in Fig. 2 in the working position.

Detailed ways

Embodiment of the test device for testing photovoltaic combiner box measurement board module of the present invention: as shown in Figure 1-8, comprise base 1, base 1 has the printed board 5 levels that extend in front and rear direction, for supplying measurement board module The inserted chute, when the measurement board module is inserted, the input terminal corresponding to the input terminal group is inserted from the front port of the chute, so that when the measurement board module is fully inserted, the input terminal group of the measurement board module is located at the rear end of the chute, The output terminal group is located at the front end of the chute, and the base 1 is respectively provided with an output wiring unit and an input wiring unit at the front end and the rear end of the chute.

Wherein, the input wiring unit includes the input wiring board 3 fixed on the rear end surface of the base 1 by fastening screws 15. The input wiring board 3 has the function of stopping and limiting the printed board 5. Input probes 11 arranged side by side are installed in the rear. In this embodiment, since the input terminal and the output terminal are 2P terminals, and each terminal has two insertion holes, there are fourteen input probes 11, and they are divided into two groups, and each group of input probes is respectively One-to-one correspondence with each input terminal 4 is provided; the rear end of each input probe 11 protrudes from the input wiring board 3 and the extended end is a terminal for connecting the input test line, and the front end of the input probe 11 is connected to the input terminal 4 Mating mating pin end. There is an annular limit boss in the middle of the input probe 11. When the input probe 11 is inserted into the input wiring board 3 from front to back, the limit boss plays the role of limit. The end has an external thread, and a locking nut 9 is screwed on it, so that the input probe 11 can be fixed on the input terminal block 3 by virtue of the cooperation of the locking nut 9 and the limiting boss.

The output wiring unit includes a single-connection output terminal board 7 corresponding to the two output terminals 6 one-to-one, and each single-connection output terminal board 7 is inserted from back to front with two left and right arranged side by side, corresponding to the output terminal 6 Corresponding to the output probe 12 that is plugged and mated, in this embodiment, the structure of the output probe 12 is consistent with the structure of the input probe 11, and its terminal passes through the single-connected output terminal block 7 from the right back to the front, and the output probe 12 are also fixed on the respective corresponding single-connection output wiring boards 7 by lock nuts. Since the measurement board module is inserted through the front port of the chute, in order to avoid the influence of each single-connected output terminal board 7, in this embodiment, two slide bars 13 arranged side by side and spaced apart are vertically fixed on the front end surface of the base 1 , The slide bar 13 is a sleeve-like structure, and the slide bar 13 is fixed on the base through a locking screw 16 inserted therein for screwing on the base 1 . The two single-connection output wiring boards 7 are guided and slid on the corresponding slide rods 7 respectively along the front and rear directions. When the output probe 12 on 7 is just plugged into the corresponding output terminal 6, the single-connection output terminal board 7 is in the working position, and when the single-connection output terminal board 7 is turned to the reverse position opposite to the working position, it can just Avoid the front port of the chute, and the single connection output wiring board 7 of this moment is in the avoidance position. On the front end face of each single-connected output wiring board 7, there is fixedly provided with a handle cover 8 with a gap sleeved on the corresponding slide bar 13, and a gap between the handle cover 8 and the corresponding slide bar 7 is inserted for corresponding The single connection output wiring board 7 applies the reset clip 14 of the backward elastic force, utilizes the elastic effect of the reset clip 14, the printed board 5 can be pressed between the input wiring board and the single connection output wiring board, while ensuring The reliability of plugging the output probe 12 and the corresponding output terminal 6; The output wiring board 7, the above-mentioned slide bar 13, the handle cover 8 and the return compression spring 14 together constitute a rotary handle assembly.

When testing the measurement board module, because the test line can be connected to each probe in advance, this avoids repeated wiring and dismantling operations, reduces the labor intensity of workers, and does not cause the problem of wrong wiring, thereby preventing problems caused by wiring The measurement board module is scrapped due to wrong line.

As a further optimization, the hole on the input wiring board 3 for the corresponding fastening screw 15 to pass through is a long hole extending in the up and down direction, so that the height of the input probe 11 can be adjusted by adjusting the up and down position of the input wiring board 3, To meet the measurement needs of the input terminals of different heights of the measurement board module, the application range of the test device is improved. At the same time, the height of the output probe can also be adjusted by selecting handle covers 8 of different heights.

As a further optimization, each probe is also sleeved with a gasket 10 arranged between the limit boss and the corresponding wiring board. By adjusting the number of gaskets 10, the insertion depth of the probe needle can be adjusted to adapt to different depths of the measurement board module. It also improves the range of use of the test device.

As a further optimization, the outer sides of each of the wiring boards are respectively provided with a combination terminal 2 corresponding to each input terminal 4 one by one, which is formed by two external terminals connected in sequence. The external terminals are also 2P terminals, and the two external terminals It is fixed back to back by strong glue, and the corresponding pins of the two terminals are short-circuited by soldering. In this way, one of the external terminals can be crimped to the tail of the probe, and the other external terminal can be crimped to the test line, which not only avoids shorting of adjacent test lines The connection also ensures the flexibility of test lead removal. Since the minimum distance between adjacent probes of the test device is 5.08mm, if the test line is directly connected to the probe with a clamp or directly wound on the probe, it is very easy to cause a short circuit at the end of the test line. If the test line is directly soldered to the probe As a result, the probes and test leads cannot be removed from the test device, and if the probes are damaged, the test device cannot be used. The combination terminal solves this problem ingeniously. As long as the center-to-center spacing of each terminal is 5.08mm, the perfect connection between the test lead and the probe is realized. Since the wiring holes of each terminal are insulated, it can ensure that the ends of the test lines will not be short-circuited. No matter for the test line or the test device, since the combined terminal is used as a bridge, it is very convenient to disassemble .

The concrete operation process of above-mentioned embodiment is as follows:

1) As shown in Figure 4, pull the two single-connection output terminal boards 7 forward in the direction of the arrow, and this process needs to overcome the elastic force of the return compression spring 14 in the rotary handle sleeve;

2) As shown in Figure 5, rotate the two single-connection output terminal boards 7 in the direction of the arrow until the avoidance position, at this time the front port of the chute is out of the way;

3) As shown in Figure 6, insert the printed board of the measurement board module to be tested into the chute horizontally from the front port of the chute in the direction of the arrow;

4) As shown in Figure 7, after the two modules to be tested are inserted, each input terminal on the printed board is plugged into the corresponding input probe 11, and the two single-connected output wires are pulled forward in the direction of the arrow Plate 7, this process also needs to overcome the elastic force of the return clip spring;

5) As shown in Figure 8, rotate the single-connection output wiring board in the opposite direction to the direction of the arrow until the state shown in the figure, loosen the single-connection wiring board, and insert each output probe 12 into the corresponding output under the action of the reset spring In the terminal, the test operation can be carried out afterwards.

In the above embodiment, each terminal on the measurement board module to be tested is a 2P terminal, so the number of probes corresponding to each terminal should be two. In other embodiments, if each terminal on the measurement board module to be tested is a 1P Terminals, correspondingly, the number of probes corresponding to each terminal should be one. Generally speaking, the selection of the number of probes is determined by the shape and number of terminals on the measurement board module to be tested.

In other embodiments, the reset compression spring may not be provided. After the output probe is inserted into the output terminal, the single-connection output wiring board is fixed on the base with screws, and the screws are removed when the measurement board module to be tested slides in. , and then turn the single-connection output wiring board to a position where the measurement board module can be avoided, and the functions of avoidance and limit can also be realized.

Of course, in other embodiments, the two single-connection output wiring boards can also be an integral output wiring board structure. The output wiring boards are arranged on the base in a hinged manner, and after the output probes are inserted into the output terminals, they are screwed together. The output wiring board is fixed on the base. When the measurement board module to be tested is slid in, remove the screws, and then turn the overall output wiring board to a position that can avoid the measurement board module, which can also achieve the functions of avoidance and limit.

Claims (6)

1. A test device for testing the photovoltaic combiner box measurement board module, characterized in that: it includes a base, and the base has a printed board input end extending along the front and rear directions for the measurement board module to be inserted horizontally from front to back The chute, the rear end of the chute has an input wiring unit corresponding to the input terminal group of the measurement board module, the input wiring unit includes the input wiring installed on the base and used to cooperate with the stop limit of the printed board The input wiring board is vertically inserted with elastic input probes for corresponding plugging and matching with each input terminal. The rear end of each input probe is a terminal for connecting with the input test line; the front end of the chute has a For the output wiring unit corresponding to the output terminal group of the measurement board module, the output wiring unit includes a device to avoid the printed board when the measurement board module is inserted, and to prevent the printed board from coming off after the measurement board module is inserted. The output wiring board is vertically inserted with elastic output probes for plugging and matching with each output terminal, and the front end of each output probe is a terminal for connecting with the output test line. 2. the test device for testing the photovoltaic combiner box measuring board module according to claim 1, characterized in that: the output wiring board is made up of single-connected output wiring boards whose quantity is consistent with the number of output terminals, each The single-connection output wiring boards are respectively arranged on the base through the rotating handle assembly. The rotating handle assembly includes a sliding rod fixed at the front end of the base, slidingly plugged in front and back of each single-connecting output wiring board and rotated, and fixed on the single-connection The handle cover on the front end surface of the output wiring board is sleeved on the corresponding sliding rod, and the gap between the handle cover and the corresponding sliding rod is inserted with a spring for applying backward elastic force to the corresponding single-connection output wiring board. Return the compression spring. 3. The test device for testing the photovoltaic combiner box measurement board module according to claim 1, wherein: the terminals of the probes stretch out from the respective corresponding wiring boards and the protruding parts are screwed with locks. tighten the nut, and the middle part of each probe has a limit boss that cooperates with the corresponding terminal board. The limit boss and the corresponding lock nut are arranged on both sides of the corresponding terminal board and cooperate with each other to realize the corresponding Fixation of the probe. 4. The testing device for testing the measuring board module of a photovoltaic combiner box according to claim 3, characterized in that: each of the probes is provided with more than one top pressing on the limit boss and the corresponding wiring board Spacers between to adjust the overhang length of the probe tip. 5. The test device for testing the photovoltaic combiner box measurement board module according to claim 1, characterized in that: the input wiring board is fixedly connected to the base through fastening screws, and the supply and supply on the input wiring board correspond to The holes through which the fastening screws pass are elongated holes extending up and down to adjust the height of the probe. 6. The test device for testing the photovoltaic combiner box measurement board module according to any one of claims 1-5, wherein: the outer sides of each of the wiring boards are respectively provided with two probes corresponding to each probe. One of the external terminals of the combined terminal is connected to the plug-in end of the corresponding probe, and the other external terminal is used to connect to the corresponding test line.

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