A quality detection method for an external power field electric module

Abstract

The application relates to a quality detection method for an external power supply field electric module, belonging to the technical field of air purification, and comprising the following steps: S100, a field electric module, an external power supply and an ammeter are connected in series to form a power-on loop, and a detection element is connected in parallel with the field electric module; S300, current indication of the ammeter is observed, if the current value is not in a preset current range, the detection element is sequentially contacted with all metal needles of the field electric module, voltage indication of the detection element is observed in real time, if the voltage value is not in a preset voltage range, it is indicated that a conductive component in the field electric module is not effectively electrically connected, so that a field electric module appears a circuit breaking fault, the application determines electric connection reliability of the conductive component in the field electric module from the outside of the field electric module by observing current indication and voltage indication, detects the quality of the field electric module, avoids that defective products flow to the market, and ensures that the field electric module does not appear a circuit breaking fault in actual application.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air purification, and particularly relates to a quality detection method for an external power supply field electric module. BACKGROUND

[0002] At present, mainstream air purification technologies are divided into traditional filtration technology and traditional electrostatic technology.

[0003] The traditional filtration technology filters or adsorbs pollutants in the air through fibers and filtration materials based on fibers, thereby purifying the air. The technology is mature and relatively stable in operation, but the labor cost, material cost, operation cost and maintenance cost are very high, and improper maintenance may have certain safety risks. As the filtration material continuously intercepts pollutants in the air, the gap between the fibers is continuously blocked, and the wind resistance is continuously increased, so the filtration material needs to be cleaned and replaced frequently, and bacteria and viruses in the air retained in the filtration material may cause bacterial reproduction, mold growth and odor problems.

[0004] The traditional electrostatic technology brings the particulate matter in the gas to a charge through an ionization zone, and the charged particulate matter is adsorbed by the electric field formed in the dust collection zone, thereby completing the purification. Various high-voltage electrostatic dust removal devices designed using the principle of traditional electrostatic technology can complete the purification of a wide flow rate and a full range of particulate pollution, can be used relatively stably at different temperatures, humidities and other environments, and can be better used in air filtration and treatment in the fields of household, commercial, industrial, tunnel and subway, and has the technical characteristics of long service life, high purification efficiency, low operation cost and low maintenance cost. At present, there is a field electric module with a point-ring structure on the market, which includes a discharge tip, a metal plate, an insulating frame and other materials, such as the ion cloud generator for air purifiers in CN206094315U. The points of the field electric module generally use metal needles, and the rings use approximately circular or circular metal holes. The ionization zone formed by the metal needles and the metal holes ionizes the passing air and makes the particulate matter in the air carry the same charge. The charged particulate matter flows through the electric field formed by the dust collection device and is captured by the dust collection plate, thereby completing the purification of the air. After the field electric module is formed into a finished product, different metal needles are connected by conductive components at the bottom, and are sealed inside by insulating materials. Therefore, when the conductive components are not effectively connected, the field electric module will have a circuit breakage fault, which affects the purification performance of the entire product. However, whether the conductive components are effectively connected cannot be identified from the outside of the field electric module. At present, there is no effective detection means to identify the electrical connection reliability of the conductive components inside the field electric module. SUMMARY

[0005] To address the shortcomings of existing technologies and solve the aforementioned problems, a quality inspection method for external power supply field power modules is proposed. This method determines the electrical connection reliability of the internal conductive components from the outside of the field power module, thereby inspecting the quality of the field power module, preventing defective products from entering the market, and ensuring that the field power module will not experience open circuit failures in practical applications.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A quality inspection method for an external power supply field module includes:

[0008] S100, the field power module, its external power supply and the ammeter are connected in series to form a power-conducting circuit, and the detection element is connected in parallel with the field power module;

[0009] S300. Observe the current reading of the ammeter. If the current value is not within the current preset range, the detection element contacts all the metal pins of the field electric module in sequence and observe the voltage reading of the detection element in real time. If the voltage value is not within the voltage preset range, it indicates that the conductive parts inside the field electric module are not effectively electrically connected, causing the field electric module to have an open circuit fault.

[0010] The technical solution is further configured such that, in S100, the external power supply is connected to the electrode contacts of the field power module through a conductive connector, thereby realizing the electrical connection between the external power supply and the field power module to form a power-conducting circuit, and the field power module is placed on the detection fixture.

[0011] The technical solution is further configured such that the conductive connector is disposed on the detection fixture, and the field electric module is pushed along the surface of the detection fixture to cause the conductive connector to connect with the electrode contact.

[0012] The technical solution is further configured such that the testing fixture includes a first side plate, and a first mounting hole for mounting the conductive connector is provided on the first side plate, and the connection between the first mounting hole and the conductive connector is insulated.

[0013] The technical solution is further configured such that the testing fixture includes a second side plate disposed opposite to the first side plate, the second side plate has a second mounting hole for mounting the conductive connector, the second mounting hole is insulated at the junction with the conductive connector, and the distance between the first side plate and the second side plate is adjustable.

[0014] The technical solution is further configured such that the testing fixture also includes a base plate, the base plate is in contact with the lower surface of the field electric module, a limiting through hole is opened on the second side plate, a limiting plate is provided on the base plate and embedded in the limiting through hole, and the second side plate can slide along the limiting plate to change the distance between the first side plate and the second side plate.

[0015] The technical solution is further configured such that a vertical plate is provided below the base plate, and a tension spring is provided between the vertical plate and the second side plate.

[0016] The technical solution is further configured such that the second side plate includes an upper side plate, a connecting plate, and a lower side plate. The upper side plate is parallel to the lower side plate and perpendicular to the bottom plate. The upper side plate, the connecting plate, and the lower side plate form a Z-shaped structure. The limiting through hole is located on the lower side plate.

[0017] The technical solution is further configured such that, in S300, the detection element is a high-voltage rod, one end of the high-voltage rod is electrically connected to an external power supply, the other end of the high-voltage rod is grounded, the tip of the high-voltage rod is in contact with the metal needles of the field electric module, and the metal needles of the field electric module are arranged in a matrix structure, with adjacent rows or adjacent columns of metal needles electrically connected through conductive components.

[0018] This technical solution is further configured such that if the voltage value is not within the preset voltage range, it indicates that the conductive components inside the field power module are not effectively electrically connected, causing an open circuit fault in the field power module, including:

[0019] If the voltage value of the metal needle in the current row or column is within the preset voltage range, and the metal needle in the adjacent row or column has no voltage, it means that the conductive parts connecting the two rows or columns are not electrically connected.

[0020] If the voltage value of one or more metal pins in the current row or column is not within the preset voltage range, while the voltage values ​​of the other metal pins in the current row or column are within the preset voltage range, it indicates that there is no effective electrical connection between the one or more metal pins and the conductive component.

[0021] If all the metal pins of the field power module have no voltage, it indicates that there is no electrical connection between the field power module and the external power supply, or that the detection element and the external power supply are not effectively connected, or that the external power supply is damaged.

[0022] This technical solution is further configured such that, if the current value is within a preset current range, the detection element contacts metal pins in different rows or columns, and the voltage reading of the detection element is observed in real time. If the voltage value of one metal pin is not within the preset voltage range, it indicates that the conductive components inside the field current module are not effectively electrically connected, causing an open circuit fault in the field current module. The detection element then contacts all the metal pins of the field current module in sequence, and the voltage reading of the detection element is observed in real time.

[0023] If the voltage value of the metal needle in the current row or column is within the preset voltage range, and the metal needle in the adjacent row or column has no voltage, it means that the conductive parts connecting the two rows or columns are not electrically connected.

[0024] If the voltage value of one or more metal pins in the current row or column is not within the preset voltage range, while the voltage values ​​of the other metal pins in the current row or column are within the preset voltage range, it indicates that there is no effective electrical connection between the one or more metal pins and the conductive component.

[0025] If all the metal pins of the field power module have no voltage, it indicates that there is no electrical connection between the field power module and the external power supply, or that the detection element and the external power supply are not effectively connected, or that the external power supply is damaged.

[0026] This technical solution is further configured such that if the current value is within the current preset range, the detection element is in contact with metal needles in different rows or columns, and the voltage reading of the detection element is observed in real time. If the voltage values ​​of the metal needles in contact with the detection element are all within the voltage preset range, it indicates that the field current module has not experienced an open circuit fault.

[0027] This technical solution is further configured such that, in S300, the method for determining the preset voltage range is as follows:

[0028] Under constant temperature and humidity conditions, for a field electric module with a specific structure, the voltage reading at its metal pin is a set value, and ±5% of the set value is used as the preset voltage range.

[0029] This technical solution is further configured such that, in S300, the method for determining the preset current range is as follows:

[0030] The field power module, its external power supply, and the ammeter are connected in series to form a power-carrying circuit. The detection element is connected in parallel with the field power module. The metal needles of the detection element and the field power module are brought into contact in sequence. When the voltage values ​​of all the metal needles are within the preset voltage range, the current value of the ammeter is recorded. Multiple field power modules are tested repeatedly to obtain multiple current values. The multiple current values ​​constitute the preset current range.

[0031] This technical solution is further configured such that, following S300, it also includes:

[0032] S500 After the test is completed, disconnect the power circuit and connect the metal needle to the metal plate of the field electric module to release the charge accumulated in the field electric module.

[0033] The beneficial effects of this invention are:

[0034] 1. The detection element contacts the metal pin of the field electric module. By observing the current and voltage readings, the reliability of the electrical connection of the conductive parts inside the field electric module is determined from the outside. This process is used to inspect the quality of the field electric module, prevent defective products from entering the market, and ensure that the field electric module will not experience open circuit failures in practical applications.

[0035] 2. When the current value is within the preset current range, the detection element can perform random checks on the metal needles to improve detection efficiency; when the current value is not within the preset current range, the detection element contacts the metal needles in sequence to find the cause of the open circuit fault in the field current module.

[0036] 3. The spacing between the first side plate and the second side plate is adjustable to accommodate different specifications of field electric modules.

[0037] 4. The tension spring works in conjunction with the second side plate to achieve automatic reset of the second side plate and improve the fit between the second side plate and the field electric module.

[0038] 5. The second end of the ejector pin is designed to be toothed or needle-shaped to improve its contact stability with the electrode contacts. Attached Figure Description

[0039] Figure 1 This is a flowchart of the present invention;

[0040] Figure 2 This is a circuit diagram of the present invention;

[0041] Figure 3 This is a schematic diagram of the detection tooling in this invention;

[0042] Figure 4 This is a schematic diagram of the second side plate in this invention;

[0043] Figure 5 This is a side view of the second side plate in this invention;

[0044] Figure 6 This is a schematic diagram of the assembly of the vertical plate and the tension spring in this invention;

[0045] Figure 7 This is a schematic diagram of one embodiment of the conductive connector in this invention;

[0046] Figure 8 This is a schematic diagram of another embodiment of the conductive connector in this invention;

[0047] Figure 9 This is a structural schematic diagram of one embodiment of the electric field module of the present invention;

[0048] Figure 10 This is a schematic diagram of another embodiment of the electric field module of the present invention.

[0049] In the attached diagram: 1-External power supply, 2-Ammeter, 3-Field current module, 301-Metal needle, 302-Metal plate, 303-Insulating base, 304-Electrode contact, 4-Detection element, 5-Detection fixture, 502-First side plate, 504-First mounting hole, 505-Limiting plate, 506-Limiting through hole, 507-Second side plate, 508-Upper side plate, 509-Lower side plate, 510-Connecting plate, 511-Second mounting hole, 6-Vertical plate, 7-Tension spring, 8-Conductive connector, 801-Housing shell, 802-Pin, 803-Spring. Detailed Implementation

[0050] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0051] Example 1:

[0052] like Figure 1 , Figure 2 As shown, a quality inspection method for an external power supply field module includes:

[0053] S100, field power module 3, its external power supply 1 and ammeter 2 are connected in series to form a power-conducting circuit, and detection element 4 is connected in parallel with field power module 3;

[0054] S300. Observe the current reading of the ammeter 2. If the current value is not within the current preset range, the detection element 4 contacts all the metal pins of the field electric module 3 in sequence and observe the voltage reading of the detection element 4 in real time. If the voltage value is not within the voltage preset range, it indicates that the conductive parts inside the field electric module 3 are not effectively electrically connected, causing the field electric module 3 to have an open circuit fault.

[0055] The technical solution is further configured such that, in S100, the external power supply 1 is connected to the electrode contacts of the field power module 3 through the conductive connector 8, so as to realize the electrical connection between the external power supply 1 and the field power module 3 to form a power-conducting circuit, and the field power module 3 is placed on the detection fixture 5.

[0056] It is worth noting that the external power supply 1 can provide power at either negative high voltage or positive high voltage. The electric field module 3 forms an electric field that adsorbs charged particles and sterilizes them.

[0057] Specifically, such as Figures 9-10As shown, the field power module 3 includes a metal needle 301, a metal plate 302, and an insulating base 303. The metal needle 301 is located on the insulating base 303. A near-square hole is formed in the metal plate 302, and the metal needle 301 is located on the axis at the center of the near-square hole. Conductive components are provided inside the insulating base 303 to achieve electrical connection between adjacent metal needles 301. A circular hole can also be formed in the metal plate 302; this is not a limitation. Furthermore, depending on the position of the electrode contacts 304, the power supply method of the field power module 3 is divided into same-side and opposite-side types. Figure 9 The structure shown is a same-side type. Figure 10 The structure shown is of the opposite side type.

[0058] like Figures 3-8 As shown, the conductive connector 8 is disposed on the detection fixture 5, and the field electric module 3 is pushed along the surface of the detection fixture 5 to cause the conductive connector 8 to connect with the electrode contact 304.

[0059] Specifically, the testing fixture 5 includes a first side plate 502, on which a first mounting hole 504 for mounting the conductive connector 8 is provided. It is worth noting that the first side plate 502 can be made of an insulating material. Alternatively, the first side plate 502 can be made of a conductive material, with insulation treatment only applied at the junction of the first mounting hole 504 and the conductive connector 8. Multiple first mounting holes 504 are provided to match the spacing of the electrode contacts 304. When the electrode contacts 304 are located on the same side of the field-electric module 3, the conductive connector 8 can be mounted by selecting the first mounting hole 504 corresponding to the electrode contact 304.

[0060] It is worth noting that when the electrode contacts 304 are located on different sides of the field power module 3, the electrode contacts 304 on one side are connected to the conductive connectors 8 on the first side plate 502, while the electrode contacts 304 on the other side can be connected to the external power supply 1 through other conductive components. Alternatively, the detection fixture 5 includes a second side plate 507 disposed opposite to the first side plate 502, and the second side plate 507 has a second mounting hole 511 for mounting the conductive connectors 8. The second side plate 507 may be made of an insulating material. Alternatively, the second side plate 507 may be made of a conductive material, with insulation treatment only applied at the junction of the second mounting hole 511 and the conductive connector 8. Furthermore, multiple second mounting holes 511 are provided to match the spacing of the electrode contacts 304.

[0061] The technical solution is further configured such that the distance between the first side plate 502 and the second side plate 507 is adjustable to accommodate field electric modules 3 of different specifications.

[0062] Specifically, the testing fixture 5 also includes a base plate 501, which is in contact with the lower surface of the field electric module 3. A limiting through hole 506 is provided on the second side plate 507. A limiting plate 505 is provided on the base plate 501 and embedded in the limiting through hole 506. The second side plate 507 can slide along the limiting plate 505 to change the distance between the first side plate 502 and the second side plate 507.

[0063] This technical solution is further configured such that a vertical plate 6 is provided below the base plate 501, and a tension spring 7 is provided between the vertical plate 6 and the second side plate 507. The tension spring 7 cooperates with the second side plate 507 to achieve automatic reset of the second side plate 507 and improve the fit between the second side plate 507 and the field electric module 3. Alternatively, a simple device for fixing the tension spring 7, such as a hook, can be provided below the base plate 501.

[0064] Specifically, the second side plate 507 includes an upper side plate 508, a connecting plate 510, and a lower side plate 509. The upper side plate 508 and the lower side plate 509 are parallel to and perpendicular to the base plate 501. The two ends of the connecting plate 510 are connected to the upper side plate 508 and the lower side plate 509, respectively. The upper side plate 508, the connecting plate 510, and the lower side plate 509 form a Z-shaped structure. The limiting through hole 506 is located on the lower side plate 509 to prevent the second side plate 507 from tilting under the tension of the tension spring 7. The lower side plate 509 has a certain thickness to further prevent the second side plate 507 from tilting under the tension of the tension spring 7.

[0065] This technical solution is further configured such that the detection fixture 5 also includes a back plate 503, which is attached to the side of the field electric module 3. Specifically, the back plate 503 may be made of an insulating material. Alternatively, the back plate 503 may be made of a conductive material, with insulation treatment only applied to the area where the back plate 503 is attached to the field electric module 3.

[0066] The technical solution is further configured such that the conductive connector 8 is a spring pin, the spring pin includes a housing 801, a spring 803 and a pin 802, the housing 801 has a cavity inside, the spring 803 is located in the cavity, the first end of the pin 802 extends into the cavity and is connected to the spring 803, and the second end of the pin 802 is located outside the cavity.

[0067] The technical solution is further configured such that the first end of the ejector pin 802 is connected to the external power supply 1, the second end of the ejector pin 802 is connected to the electrode contact 304, and the second end of the ejector pin 802 is toothed or needle-shaped to improve its contact stability with the electrode contact 304.

[0068] This technical solution is further configured such that, in S300, the detection element 4 is a high-voltage rod, one end of which is electrically connected to an external power supply 1, and the other end is grounded. The tip of the high-voltage rod is in contact with the metal needle 301 of the field power module. The high-voltage rod can display the voltage value, which is existing technology in the market. The high-voltage rod can also be in other forms of combination. The metal needles 301 of the field power module are arranged in a matrix structure, and adjacent rows or columns of metal needles 301 are electrically connected through conductive components.

[0069] This technical solution is further configured such that if the voltage value is not within the preset voltage range, it indicates that the conductive components inside the field power module 3 are not effectively electrically connected, causing an open circuit fault in the field power module 3, including:

[0070] 1. If the voltage value of the metal pin 301 in the current row or column is within the preset voltage range, and the metal pin 301 in the adjacent row or column has no voltage, it indicates that the conductive parts connecting the two rows or columns are not electrically connected.

[0071] by Figure 9 For example, if the voltage value of the metal pin 301 in the first row is within the preset voltage range, and the metal pin 301 in the second row has no voltage, it indicates that the conductive components connecting the first and second rows are not electrically connected. If the voltage value of the metal pin 301 in the first row is within the preset voltage range (the metal pin 301 in the first row is connected to the output terminal of the external power supply 1), and the metal pins 301 in the second and third rows have no voltage, it indicates that the conductive components connecting the first and second rows are not electrically connected.

[0072] 2. If the voltage value of one or more metal pins 301 in the current row or column is not within the preset voltage range, while the voltage values ​​of other metal pins 301 in the current row or column are within the preset voltage range, it indicates that there is no effective electrical connection between the one or more metal pins 301 and the conductive component.

[0073] 3. If all the metal pins 301 of the field power module have no voltage, it indicates that there is no electrical connection between the field power module 3 and the external power supply 1, or that the detection element 4 and the external power supply 1 are not effectively connected, or that the external power supply 1 is damaged.

[0074] This technical solution is further configured such that, in S300, the method for determining the preset voltage range is as follows:

[0075] Under constant temperature and humidity conditions, for a field electric module 3 with a specific structure, the voltage reading at its metal pin 301 is a set value, and ±5% of the set value is used as the preset voltage range.

[0076] This technical solution is further configured such that, in S300, the method for determining the preset current range is as follows:

[0077] The field power module 3, its external power supply 1, and the ammeter 2 are connected in series to form a power-carrying circuit. The detection element is connected in parallel with the field power module. The detection element is brought into contact with the metal needles of the field power module in sequence. When the voltage values ​​of all metal needles 301 are within the preset voltage range, the current value of the ammeter 2 is recorded. Multiple field power modules 3 are repeatedly tested to obtain multiple current values. The multiple current values ​​constitute the preset current range.

[0078] This technical solution is further configured such that, following S300, it also includes:

[0079] S500. After the test is completed, disconnect the power circuit and connect the metal needle 301 to the metal plate 302 of the field electric module to release the charge accumulated in the field electric module 3 and improve safety.

[0080] Example 2:

[0081] like Figures 1 to 10 As shown, the parts that are the same as those in Embodiment 1 will not be repeated here. The differences are as follows:

[0082] If the current value is within the preset current range, the detection element 4 contacts metal needles 301 in different rows or columns, and the voltage reading of the detection element 4 is observed in real time. If the voltage value of one metal needle 301 is not within the preset voltage range, it indicates that the conductive components inside the field current module 3 are not effectively electrically connected, causing an open circuit fault in the field current module 3. The detection element 4 contacts all metal needles 301 of the field current module in sequence, and the voltage reading of the detection element 4 is observed in real time, as follows:

[0083] 1. If the voltage value of the metal pin 301 in the current row or column is within the preset voltage range, and the metal pin 301 in the adjacent row or column has no voltage, it indicates that the conductive parts connecting the two rows or columns are not electrically connected.

[0084] 2. If the voltage value of one or more metal pins 301 in the current row or column is not within the preset voltage range, while the voltage values ​​of other metal pins 301 in the current row or column are within the preset voltage range, it indicates that there is no effective electrical connection between the one or more metal pins 301 and the conductive component.

[0085] 3. If all the metal pins 301 of the field power module have no voltage, it indicates that there is no electrical connection between the field power module 3 and the external power supply 1, or that the detection element 4 and the external power supply 1 are not effectively connected, or that the external power supply 1 is damaged.

[0086] In some other embodiments, if the current value is within the current preset range, the detection element 4 is in contact with metal needles 301 in different rows or columns, and the voltage reading of the detection element 4 is observed in real time. If the voltage values ​​of the metal needles 301 in contact with the detection element 4 are all within the voltage preset range, it indicates that the field current module 3 has not experienced an open circuit fault.

[0087] In other words, when the current value is within the preset current range, the detection element 4 can perform random checks on the metal needle 301, improving detection efficiency. During the random check, if the voltage value of the metal needle 301 is not within the preset voltage range, the detection element 4 will be sequentially contacted with the metal needle 301 for a full check to find the cause of the open circuit fault in the field current module 3. When the current value is not within the preset current range, the detection element 4 will be sequentially contacted with the metal needle 301 to find the cause of the open circuit fault in the field current module 3.

[0088] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A quality inspection method for an external power supply field-electric module, characterized in that, include: S100, the field power module, its external power supply and the ammeter are connected in series to form a power-conducting circuit, and the detection element is connected in parallel with the field power module; S300. Observe the current reading of the ammeter. If the current value is not within the current preset range, the detection element contacts all the metal pins of the field electric module in sequence and observe the voltage reading of the detection element in real time. If the voltage value is not within the voltage preset range, it indicates that the conductive parts inside the field electric module are not effectively electrically connected, causing the field electric module to have an open circuit fault. If the voltage value is not within the preset voltage range, it indicates that the conductive components inside the field power module are not effectively electrically connected, causing an open circuit fault in the field power module. This includes: if the voltage value of the metal pin in the current row or column is within the preset voltage range, but the metal pins in adjacent rows or columns have no voltage, it indicates that the conductive components connecting the two rows or columns are not electrically connected; if the voltage value of one or more metal pins in the current row or column is not within the preset voltage range, but the voltage values ​​of the other metal pins in the current row or column are within the preset voltage range, it indicates that one or more metal pins are not effectively electrically connected to the conductive components; if all the metal pins of the field power module have no voltage, it indicates that there is no electrical connection between the field power module and the external power supply, or that there is no effective electrical connection between the detection element and the external power supply, or that the external power supply is damaged. If the current value is within the preset current range, the detection element contacts metal pins in different rows or columns, and the voltage reading of the detection element is observed in real time. If the voltage value of one metal pin is not within the preset voltage range, it indicates that the conductive components inside the field power module are not effectively connected, causing an open circuit fault in the field power module. The detection element contacts all the metal pins of the field power module in sequence, and the voltage reading of the detection element is observed in real time: If the voltage value of the metal pin in the current row or column is within the preset voltage range, and the metal pins in the adjacent row or column have no voltage, it indicates that the conductive components connecting the two rows or columns are not connected; if the voltage value of one or more metal pins in the current row or column is not within the preset voltage range, but the voltage values ​​of other metal pins in the current row or column are within the preset voltage range, it indicates that one or more metal pins are not effectively connected to the conductive components; if all the metal pins of the field power module have no voltage, it indicates that there is no electrical connection between the field power module and the external power supply, or that there is no effective electrical connection between the detection element and the external power supply, or that the external power supply is damaged. If the current value is within the preset current range, the detection element is in contact with metal needles in different rows or columns, and the voltage reading of the detection element is observed in real time. If the voltage values ​​of the metal needles in contact with the detection element are all within the preset voltage range, it indicates that the field current module has not experienced an open circuit fault.

2. The quality inspection method for an external power supply field module according to claim 1, characterized in that, In S100, the external power supply is connected to the electrode contacts of the field power module through a conductive connector, thereby realizing the electrical connection between the external power supply and the field power module to form a power-conducting circuit. The field power module is placed on the detection fixture.

3. The quality inspection method for an external power supply field module according to claim 2, characterized in that, The conductive connector is disposed on the detection fixture, and the field electric module is pushed along the surface of the detection fixture to cause the conductive connector to connect with the electrode contact.

4. The quality inspection method for an external power supply field module according to claim 3, characterized in that, The testing fixture includes a first side plate, on which a first mounting hole for mounting the conductive connector is provided, and the connection between the first mounting hole and the conductive connector is insulated.

5. A quality inspection method for an external power supply field-electric module according to claim 4, characterized in that, The testing fixture includes a second side plate disposed opposite to the first side plate. The second side plate has a second mounting hole for mounting the conductive connector. The second mounting hole is insulated at the junction with the conductive connector. The distance between the first side plate and the second side plate is adjustable.

6. The quality inspection method for an external power supply field-electric module according to claim 5, characterized in that, The testing fixture also includes a base plate, which is attached to the lower surface of the field electric module. A limiting through hole is opened on the second side plate, and a limiting plate embedded in the limiting through hole is provided on the base plate. The second side plate can slide along the limiting plate to change the distance between the first side plate and the second side plate.

7. A quality inspection method for an external power supply field module according to claim 6, characterized in that, A vertical plate is provided below the base plate, and a tension spring is provided between the vertical plate and the second side plate.

8. A quality inspection method for an external power supply field-electric module according to claim 6 or 7, characterized in that, The second side plate includes an upper side plate, a connecting plate, and a lower side plate. The upper side plate is parallel to the lower side plate and perpendicular to the bottom plate. The upper side plate, the connecting plate, and the lower side plate form a Z-shaped structure. The limiting through hole is located on the lower side plate.

9. A quality inspection method for an external power supply field-electric module according to claim 1, characterized in that, In S300, the detection element is a high-voltage rod. One end of the high-voltage rod is electrically connected to an external power supply, and the other end of the high-voltage rod is grounded. The tip of the high-voltage rod is in contact with the metal needles of the field electric module. The metal needles of the field electric module are arranged in a matrix structure, and the metal needles in adjacent rows or adjacent columns are electrically connected through conductive components.

10. A quality inspection method for an external power supply field module according to claim 1, characterized in that, In S300, the method for determining the preset voltage range is as follows: Under constant temperature and humidity conditions, for a field electric module with a specific structure, the voltage reading at the metal pin is a set value, and ±5% of the set value is used as the preset voltage range.

11. A quality inspection method for an external power supply field module according to claim 10, characterized in that, In S300, the method for determining the preset current range is as follows: The field power module, its external power supply, and the ammeter are connected in series to form a power-carrying circuit. The detection element is connected in parallel with the field power module. The metal needles of the detection element and the field power module are brought into contact in sequence. When the voltage values ​​of all the metal needles are within the preset voltage range, the current value of the ammeter is recorded. Multiple field power modules are tested repeatedly to obtain multiple current values. The multiple current values ​​constitute the preset current range.

12. The quality inspection method for an external power supply field module according to claim 1, characterized in that, Following the S300 are: S500 After the test is completed, disconnect the power circuit and connect the metal needle to the metal plate of the field electric module to release the charge accumulated in the field electric module.

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