阅读说明：本技术 一种iv测试探针排测试检测系统 (IV test probe row test detection system ) 是由 杨灼坚 段波 陶龙忠 于 2021-02-09 设计创作，主要内容包括：本发明公开了一种IV测试探针排测试检测系统,其技术方案要点是：包括排针基板和控制模块,所述排针基板上安装有若干组电压排针和电流排针,所述排针基板的一端开设有电压焊接点,所述电压焊接点上依次电性连接有若干组电阻,两两间隔所述电压排针与一组所述电阻电性串联,所述电压焊接点的下部开设有电流焊接点,所述控制模块上电性连接有可控电阻板和IV测试仪器,所述可控电阻板和所述IV测试仪器上电性连接有若干组继电器,若干组继电器上分别电性连接有检测探针；利用装置可彻底杜绝分档错误,通过串联电阻结构连接电压排针,用于测量电压探针之间的平均栅线电位,此外,不会对被测单元施加不必要的大机械应力。(The invention discloses an IV test probe row test detection system, which has the technical scheme that: the device comprises a pin header substrate and a control module, wherein a plurality of groups of voltage pin headers and current pin headers are mounted on the pin header substrate, one end of the pin header substrate is provided with a voltage welding point, the voltage welding point is sequentially and electrically connected with a plurality of groups of resistors, every two voltage pin headers are electrically connected with one group of resistors in series at intervals, the lower part of the voltage welding point is provided with a current welding point, the control module is electrically connected with a controllable resistance plate and an IV test instrument, the controllable resistance plate and the IV test instrument are electrically connected with a plurality of groups of relays, and the relays are respectively and electrically connected with a detection probe; the device can thoroughly avoid grading errors, is connected with the voltage pin header through the series resistance structure and is used for measuring the average grid line potential between the voltage probes, and in addition, unnecessary large mechanical stress cannot be applied to a unit to be measured.)

1. The utility model provides a test detecting system is arranged to IV test probe, includes row's needle base plate (1) and control module, its characterized in that: the pin header is characterized in that a plurality of groups of voltage pin headers (2) and current pin headers (3) are fixedly mounted on a pin header base plate (1), the plurality of groups of voltage pin headers (2) and the plurality of groups of current pin headers (3) are arranged at intervals, one end of the pin header base plate (1) is provided with a voltage welding point (4), the voltage welding point (4) is electrically connected with a plurality of groups of resistors (5) in sequence, every two groups of the voltage pin headers (2) are electrically connected with one group of the resistors (5) in series, the lower part of the voltage welding point (4) is provided with a current welding point (4), the current welding point (4) is electrically connected with the plurality of groups of the current pin headers (3), a controllable resistance plate and an IV test instrument are electrically connected onto a control module, a plurality of groups of relays are electrically connected onto the controllable resistance plate and the IV test instrument, and a plurality of groups of relays are electrically, the controllable resistance board is electrically connected with the IV test instrument, and the control module is electrically connected with a display screen.

2. The IV test probe bank test detection system of claim 1, wherein: the control module is electrically connected with a storage module, and the storage module at least comprises a group of ROM storage modules and a group of RAM storage modules.

3. The IV test probe bank test detection system of claim 3, wherein: the power supply module comprises a voltage reduction circuit, a rectification circuit, a filter circuit and a voltage stabilizing circuit.

4. The IV test probe bank test detection system of claim 1, wherein: the last electric connection of control module has power module, including driver, steering motor, track motor, conveying motor and lift cylinder in the power module.

5. The IV test probe bank test detection system of claim 5, wherein: the driver is electrically connected with the control module, and the driver is electrically connected with the steering motor, the track motor, the conveying motor and the lifting cylinder.

6. The IV test probe bank test detection system of claim 1, wherein: at least two groups of mounting holes (7) are formed in the two ends of the pin header base plate (1).

7. The IV test probe bank test detection system of claim 7, wherein: at least two sets of mounting hole (7) respectively with the output fixed connection of lift cylinder, the both ends of row needle base plate (1) through the sliding seat with track motor's output screw threaded connection.

8. The IV test probe bank test detection system of claim 1, wherein: the control module is also electrically connected with a communication module and an illumination light source.

9. The IV test probe bank test detection system of claim 8, wherein: and the control module is electrically connected with a power supply module for supplying power to the illumination light source.

10. The IV test probe bank test detection system of claim 4, wherein: the power module further comprises a mechanical arm, and the mechanical arm is also electrically connected with the driver.

Technical Field

The invention relates to the field of photovoltaic cell manufacturing, in particular to an IV test probe row test detection system.

Background

The testing and sorting of the photovoltaic cell manufacturing industry is one of the procedures, and the testing and sorting are related to the good and poor of the product gear and quality, so the testing standard and the requirement on the detection equipment are high. The test sorting must use an IV tester, as shown in fig. 1, which measures the IV characteristics of the solar cell, can measure the silicon solar cell, and the system will automatically calculate key parameters, such as open circuit voltage, short circuit current, FF (fill factor), Jsc (short circuit current density), Voc (open circuit voltage), maximum power, efficiency, etc. The parameter tests are carried out, and the contact condition, the structure and the arrangement of the probe bank are directly related to the accuracy of all data. In a common probe row design, current and voltage pins are arranged on one probe row at intervals, all the current and voltage pins are respectively connected in series and then collected to a digital source meter to perform four-wire method IV scanning, namely dynamic load scanning is performed at a current interface end under an illumination condition, and current and voltage values are recorded at the same time. Since the current pin and the voltage pin are not at the same position on the main grid, the read voltage value is not the voltage at which the current is drawn. This has at least two effects: (1) the read voltage value is higher than the voltage at the current needle, the FF and the efficiency are both higher, the higher degree is related to the distance between the voltage needle and two adjacent current needles and the line resistance of the solar cell main grid, and the larger the distance is, the larger the resistance of the main grid line is, the larger the deviation degree is; (2) because all voltage pins are shorted and then collected to the digital source meter, when the voltage values at different positions of the solar cell are different, the current flowing among the voltage pins can be caused to make the voltage of the whole plane tend to be consistent, so that for the solar cell with poor uniformity, especially for the large-size cells 182,210, the fluctuation caused by the non-uniformity also affects FF and efficiency, and the worse the uniformity, the larger the fluctuation.

To sum up, the conventional IV testing equipment has a high detection misjudgment rate, and generally selects good battery cells to poor battery cell positions, and also selects poor battery cells to good battery cell positions, or puts battery cells with different voltages together, and the misjudgment of the detection equipment causes great economic loss to companies.

Referring to the prior Chinese patent with publication No. CN205397505U, the system for detecting the back of the photovoltaic cell piece is disclosed, which comprises a vacuum adsorption plate (1), three adsorption section conveying belts (2), a detection front section belt (3), a detection rear section belt (4) and a cylinder; the vacuum adsorption plate (1) is connected with an air pipe for an air pump and has a vacuum adsorption function, three adsorption section conveying belts (2) are tightly attached to the lower part of the vacuum adsorption plate (1) to operate, the battery piece (6) is conveyed to a charging station (11) by a detection front section belt (3) and then jacked up by a cylinder, and the vacuum adsorption plate (1) adsorbs the battery piece (6) to the adsorption section conveying belts (2); the adsorption section conveying belt (2) enables the battery piece (6) to be operated to the detection station (12), and the adsorption section conveying belt (2) enables the battery piece (6) to be operated to the discharging station (13) after detection.

The photovoltaic cell back detection system can simplify a detection and transmission device, greatly shorten the length of a machine and reduce the cost of the machine. However, the photovoltaic cell back side detection system still has some disadvantages, such as: the detection misjudgment rate of the conventional IV test equipment is extremely high, good battery pieces are generally sorted to poor battery piece gears, poor battery pieces are also sorted to good battery piece gears, or battery pieces with different voltages are put together, and the misjudgment of the detection equipment causes great economic loss for companies.

Disclosure of Invention

In view of the problems mentioned in the background, it is an object of the present invention to provide an IV test probe bank test detection system to solve the problems mentioned in the background.

The technical purpose of the invention is realized by the following technical scheme:

a test detection system for an IV test probe bar comprises a pin arranging substrate and a control module, wherein a plurality of groups of voltage pins and current pins are fixedly arranged on the pin arranging substrate, a plurality of groups of the voltage pins and a plurality of groups of the current pins are arranged at intervals, one end of the pin arranging substrate is provided with a voltage welding point, the voltage welding point is electrically connected with a plurality of groups of resistors in sequence, the voltage pins and the resistors are electrically connected in series at intervals, the lower part of the voltage welding point is provided with a current welding point, the current welding point is electrically connected with the current pins, the control module is electrically connected with a controllable resistance plate and an IV test instrument, the controllable resistance plate and the IV test instrument are electrically connected with a plurality of groups of relays, the relays are respectively electrically connected with test probes, and the controllable resistance plate is electrically connected with the IV test instrument, the control module is electrically connected with a display screen.

Through adopting above-mentioned technical scheme, it realizes contacting the battery piece to drive voltage pin header and electric current pin header through the pin header base plate, make voltage pin header and electric current pin header detect the battery piece, then voltage pin header transmits the voltage that detects for controllable resistance board and IV test instrument through resistance, and electric current pin header transmits the electric current that detects for controllable resistance board and IV test instrument, and then make the IV test instrument transmit data information for control module, control module shows data information on the display screen, and save in storage module.

Preferably, the control module is electrically connected with a storage module, and the storage module at least comprises a group of ROM storage modules and a group of RAM storage modules.

By adopting the technical scheme, the stored content can not be disordered, the ROM storage module can store the running program body of the system, and the RAM storage module can store the running log.

Preferably, the control module is electrically connected with a power module, and the power module comprises a driver, a steering motor, a track motor, a transmission motor and a lifting cylinder.

Through adopting above-mentioned technical scheme, power module can realize carrying and turning to the battery piece to and control the regulation to detecting the pin header.

Preferably, the driver is electrically connected to the control module, and the driver is electrically connected to the steering motor, the track motor, the conveying motor, and the lifting cylinder.

Through adopting above-mentioned technical scheme, control module can realize controlling the regulation to steering motor, track motor, conveying motor and lift cylinder through the driver.

Preferably, at least two sets of mounting holes are formed in both ends of the pin header base plate, the at least two sets of mounting holes are fixedly connected with the output end of the lifting cylinder respectively, and both ends of the pin header base plate are in threaded connection with the output screw of the track motor through sliding seats.

Through adopting above-mentioned technical scheme, the mounting hole realizes connecting the lift cylinder, realizes lift adjustment, and track motor can drive the row needle base plate and realize removing the regulation.

Preferably, the control module is further electrically connected with a communication module and an illumination light source.

Preferably, the control module is electrically connected with a power supply module for supplying power to the illumination light source.

By adopting the technical scheme, the communication module can realize transmission of detection parameters and information transmission when a fault occurs, the detection of the spectrograph, the illumination light source, the probe row and the cell is performed in a dark box, and the illumination light source can realize supplementary illumination when in detection in order to prevent external light from influencing the detection accuracy; wherein the light source intensity is adjustable according to test data requirements.

Preferably, the power module further comprises a mechanical arm, and the mechanical arm is also electrically connected with the driver.

Through adopting above-mentioned technical scheme, robotic arm can realize taking off the battery piece and put on, then makes row needle can detect.

In summary, the invention mainly has the following beneficial effects:

firstly, the double detection system can thoroughly avoid the gear-shifting error, has high detection speed and high detection accuracy, and can effectively reduce the waste caused by manual re-gear-shifting for the gear-shifting of the detection equipment in the follow-up process;

second, using a series configuration, and using more test probes, the impact of contact voltage variations on the grid line measurement location can be minimized. A contact geometry suitable for calibrating IV measurements is proposed, which is a series resistor structure consisting of several voltage probes, one voltage probe being connected to each resistor terminal. The position of the sensing probe is used to measure the average grid line potential between the voltage probes. This is the optimal contact geometry in terms of low sensitivity to grid line resistivity and contact resistance variations. Furthermore, this geometry does not impose unnecessarily large mechanical stresses on the unit under test.

Drawings

FIG. 1 is a schematic view of the testing principle of the IV detector;

FIG. 2 is a schematic diagram of the structure of the detection pin header of the present invention;

FIG. 3 is a schematic diagram of the system architecture of the present invention;

FIG. 4 is a schematic diagram of the power module of the present invention.

Reference numerals: 1. a pin header substrate; 2. a voltage pin header; 3. current pin headers; 4. a voltage pad; 5. a resistance; 6. a current welding point; 7. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 2 to 4, an IV test probe row test detection system comprises a row needle substrate 1 and a control module, wherein a plurality of groups of voltage row needles 2 and current row needles 3 are fixedly installed on the row needle substrate 1, the plurality of groups of voltage row needles 2 and the plurality of groups of current row needles 3 are arranged at intervals, one end of the row needle substrate 1 is provided with a voltage welding point 4, the voltage welding point 4 is sequentially and electrically connected with a plurality of groups of resistors 5, every two adjacent voltage row needles 2 are electrically connected with a group of resistors 5 in series, the lower part of the voltage welding point 4 is provided with a current welding point 4, the current welding point 4 is electrically connected with the plurality of groups of current row needles 3, the control module is electrically connected with a controllable resistance board and an IV test instrument, the controllable resistance board and the IV test instrument are electrically connected with a plurality of groups of relays, the plurality of groups of relays are respectively and electrically connected with detection probes, and the, the control module is electrically connected with a display screen.

Through adopting above-mentioned technical scheme, it realizes contacting the battery piece to drive voltage pin header 2 and electric current pin header 3 through pin header base plate 1, make voltage pin header 2 and electric current pin header 3 can detect the battery piece, then voltage pin header 2 transmits the voltage that detects for controllable resistance board and IV test instrument through resistance 5, and electric current pin header 3 transmits the electric current that detects for controllable resistance board and IV test instrument, and then make IV test instrument transmit data information for control module, control module shows data information on the display screen, and save in storage module.

Referring to fig. 3, for the purpose of separately storing parameters and program bodies; the control module is electrically connected with a storage module, and the storage module at least comprises a group of ROM storage modules and a group of RAM storage modules. The effect is that the stored content can not be confused, the ROM storage module can store the running program of the system, and the RAM storage module can store the running log.

The aim of stably supplying power to the control module and keeping the control module stably running is fulfilled; the power supply module comprises a voltage reduction circuit, a rectification circuit, a filter circuit and a voltage stabilizing circuit. The voltage reduction circuit can convert high voltage of a commercial power grid into low voltage, the rectification circuit can convert alternating current voltage of the commercial power grid into direct current voltage, the filter circuit can filter alternating current voltage in the direct current voltage, and the voltage stabilizing circuit can stabilize voltage fluctuation.

Referring to FIG. 4, for the purpose of powering the system; the control module is electrically connected with a power module, and the power module comprises a driver, a steering motor, a track motor, a conveying motor and a lifting cylinder. The effect does, and power module can realize carrying and turning to the battery piece to and control the regulation to detecting row needle.

Referring to FIG. 4, for the purpose of implementing the control operations of the power module; the driver is electrically connected with the control module, and the driver is electrically connected with the steering motor, the track motor, the conveying motor and the lifting cylinder. The effect does, and control module can realize controlling the regulation to steering motor, track motor, conveying motor and lift cylinder through the driver.

Referring to fig. 2, for the purpose of enabling the power module to perform connection adjustment of the pin header base plate 1; at least two sets of mounting holes 7 have all been seted up at the both ends of row needle base plate 1, and at least two sets of mounting holes 7 respectively with the output fixed connection of lift cylinder, the output screw threaded connection of sliding seat and track motor is passed through at the both ends of row needle base plate 1. The effect does, and mounting hole 7 realizes connecting the lift cylinder, realizes lift adjustment, and rail motor can drive row needle base plate 1 and realize removing the regulation.

Referring to fig. 3, for the purpose of communication transmission and illumination simulation of the system; the control module is also electrically connected with a communication module and an illumination light source. The effect is, communication module can realize transmitting the detection parameter to and transmit information when breaking down, illumination source can realize supplementing the illumination when detecting.

Referring to fig. 4, for the purpose of transferring the battery pieces; the power module also comprises a mechanical arm which is also electrically connected with the driver. The effect is, robotic arm can realize taking off and putting on the battery piece, then makes row needle can detect.

The use principle and the advantages are as follows:

when the device is used, the battery piece is transmitted by a transmission motor in a power module, then the battery piece is clamped and taken by a mechanical arm, then the battery piece is placed at a detection position, then a track motor and a lifting cylinder are started to control and adjust a pin header base plate 1, so that the pin header base plate 1 can drive voltage pin headers 2 and current pin headers 3 to be attached to the upper side and the lower side of the battery piece, then a control module starts a lighting source, so that the lighting source can simulate sunlight, so that the battery piece can generate electric quantity, after the voltage pin headers 2 detect voltage, the voltage fluctuation detected between every two voltage pin headers 2 is transmitted to a controllable resistance plate and an IV test instrument through a resistor 5 and a voltage wiring port 4, the current pin headers 3 also transmit the detected current fluctuation to the controllable resistance plate and the IV test instrument, the IV test instrument displays parameters on a display screen, the data information is stored in the storage module and transmitted through the communication module, so that the whole detection of the battery piece is completed;

after the light source intensity is adjusted to a preset value on an industrial control touch screen manually, voltage and current can be output stably under fixed light intensity equivalently, fixed data of battery pieces under the same illumination condition are tested, piece data of different gears such as an A piece and a B piece are recorded into a system before, and after each battery piece is tested, automatic grading is carried out on a data manipulator recorded into the system before comparison.

When each grid piece on the battery piece is detected, a plurality of groups of pin arranging substrates 1 are arranged, and each grid piece on the battery piece is detected through the voltage pin arranging 2 and the current pin arranging 3 on the plurality of groups of pin arranging substrates 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.