Capacitive element measuring device

Abstract

A kind of capacitive element measuring equipment, including capacitance measuring meter, first control device, two discharge probes, four measuring probes and computer.First control device includes first discharge module, discharge control module and capacitance measuring control module.Computer can drive discharge control module to operate, so that discharge control module controls first discharge module to discharge and voltage measurement to capacitive element by two discharge probes, and generates real-time voltage measurement value.When computer compares out real-time voltage measurement value less than voltage safety setting value stored in computer, computer drives capacitance measuring control module to operate, so that capacitance measuring control module controls capacitance measuring meter to carry out capacitance measurement to capacitive element by four measuring probes, and generates capacitance measurement value.Computer receives and stores capacitance measurement value, thereby, can let capacitive element measuring equipment be used for the automatic measurement of capacitance and loss characteristics of capacitive element, improve measurement efficiency, accuracy and reliability.

Description

Technical Field

[0001] This utility model relates to an electronic component measuring device, and more particularly to a capacitor component measuring device. Background Technology

[0002] Existing lifespan testing methods for aluminum electrolytic capacitors require operators to place multiple capacitors under test in an oven at 105 degrees Celsius for charging. After the charging time is up, the capacitors are removed, and the operator manually discharges the energy from each capacitor one by one. During this process, the operator also needs to measure the characteristics (capacitance, capacitance loss, leakage current) of each capacitor and record the results. However, due to the excessive number of steps in the conventional aluminum electrolytic capacitor lifespan testing process, operators often make human errors, such as reversing the positive and negative terminals of the capacitors under test, causing damage or rendering the test results unreliable. Furthermore, if the operator intentionally alters the measurement records, the authenticity of the records cannot be traced. Utility Model Content

[0003] The purpose of this invention is to provide a capacitor element measurement device that can solve at least one of the aforementioned problems.

[0004] This utility model relates to a capacitance element measuring device, suitable for measuring the electrical properties of at least one capacitance element. The device includes a fixture, a capacitance meter, a first control device, a probe unit, and a computer. The fixture includes a capacitance test circuit board. The capacitance test circuit board is used to insert and electrically connect the capacitance element. The capacitance meter is used for capacitance measurement. The first control device includes a first discharge module for discharge and voltage measurement, a discharge control module electrically connected to the first discharge module, a capacitance measurement control module electrically connected to the capacitance meter, and a first transmission communication module electrically connecting the discharge control module and the capacitance measurement control module. The probe unit can be electrically connected to the capacitance element through the capacitance test circuit board. The probe unit includes two discharge probes and four measurement probes. The two discharge probes are electrically connected to the discharge control module. The four measurement probes are electrically connected to the capacitance measurement control module and are used for four-point measurement. The computer stores voltage safety settings and can establish a link with the first transmission communication module.

[0005] The capacitance element measuring device of this invention includes a computer that drives the discharge control module to operate. The discharge control module controls the first discharge module to discharge and measure the voltage of the capacitance element through the two discharge probes, generating a real-time voltage measurement value. After receiving the real-time voltage measurement value, the computer compares it with a voltage safety setting value. When the computer determines that the real-time voltage measurement value is less than the voltage safety setting value, the computer drives the capacitance measurement control module to operate. This module controls the capacitance meter to measure the capacitance of the capacitance element through the four measurement probes, generating a capacitance measurement value. After the capacitance meter measures the capacitance value, the computer receives and stores the capacitance measurement value.

[0006] The capacitance element measuring device of this utility model further includes a first adapter. The capacitance test circuit board extends horizontally. The fixture device also includes a test board electrical connector disposed on the rear side of the capacitance test circuit board. The first adapter includes a first adapter circuit board and a first adapter electrical connector. The first adapter circuit board is located behind the capacitance test circuit board, and the extension direction of the first adapter circuit board is perpendicular to the extension direction of the capacitance test circuit board. The first adapter circuit board has at least one contact group. The contact group allows the probe unit to make separable contact and electrical connection. The first adapter electrical connector is disposed on the first adapter circuit board and electrically connected to the contact group, and can mate with the test board electrical connector.

[0007] The capacitance element measuring device of this utility model is suitable for measuring the electrical properties of multiple capacitance elements and also includes a transfer device. The capacitance test circuit board allows the multiple capacitance elements to be inserted and electrically connected. The first adapter circuit board has multiple contact groups. The multiple contact groups are arranged horizontally and electrically connected to the multiple capacitance elements respectively through the capacitance test circuit board. The computer can establish a link with the transfer device. The transfer device includes a horizontally extending guide rail, a first cylinder mounted on the guide rail, a first base connected to one end of the first cylinder and capable of moving horizontally relative to the guide rail by the first cylinder, a second cylinder mounted on the first base, and a second base connected to one end of the second cylinder and capable of moving back and forth relative to the first base by the second cylinder. The second base is used for the probe unit. Before the computer drives the discharge control module to operate, and before the discharge control module controls the first discharge module to discharge and measure the voltage of the capacitor element through the two discharge probes, the computer drives the first cylinder of the transfer device to operate, so that the probe unit, together with the first base, the second cylinder, and the second base, is moved by the first cylinder to a position where the probe unit is aligned with one of the contact groups. When the probe unit is aligned with one of the contact groups, the computer drives the second cylinder of the transfer device to operate, so that the probe unit, together with the second base, is moved by the second cylinder to move towards the first transfer device and contact one of the contact groups. After the probe unit contacts one of the contact groups, the capacitance meter measures the capacitance value of the capacitor element corresponding to the one contact group. After the computer stores the capacitance value of the capacitor element corresponding to the one contact group, the computer drives the transfer device to move the probe unit to contact the remaining contact groups one by one, so that the capacitance meter can measure the capacitance value of the capacitor element corresponding to each of the remaining contact groups one by one. After the capacitance meter measures the capacitance value of each capacitor element corresponding to the remaining contact group, the computer receives and stores the capacitance value.

[0008] This utility model relates to a capacitance element measuring device, suitable for measuring the electrical properties of at least one capacitance element. The device includes a fixture, a current meter, a power supply, a second control device, and a computer. The fixture includes a capacitance test circuit board. The capacitance test circuit board is used for inserting and electrically connecting the capacitance element. The current meter is used for current measurement. The power supply provides electrical energy. The second control device includes a second discharge module for discharging, at least one charge / discharge control module electrically connected to the current meter, the power supply, and the second discharge module, and a second transmission / communication module electrically connected to the charge / discharge control module. The charge / discharge control module is electrically connected to the capacitance element through the capacitance test circuit board. The computer stores current zeroing settings and charging time settings, and can establish a link with the second transmission / communication module.

[0009] The computer drives the charging and discharging control module to operate, causing the charging and discharging control module to control the second discharging module to discharge the capacitor element, and the charging and discharging control module to control the current meter to measure the current of the capacitor element and generate a real-time current measurement value. After receiving the real-time current measurement value, the computer compares the real-time current measurement value with the current zeroing setting value. When the computer determines that the real-time current measurement value is not greater than the current zeroing setting value, the computer drives the charging and discharging control module to operate according to the charging time setting value, causing the charging and discharging control module to control the power supply to charge the capacitor element, and the charging time of the power supply to the capacitor element is equivalent to the charging time setting value. After the power supply has charged the capacitor element for the time equivalent to the charging time setting value, the computer drives the charging and discharging control module to operate, causing the charging and discharging control module to control the current meter to measure the current of the capacitor element and generate a leakage current measurement value. After the current measuring instrument measures the leakage current value, the computer receives and stores the leakage current value.

[0010] The capacitance element measuring device of this utility model further includes a second adapter. The capacitance test circuit board extends horizontally. The fixture device also includes a test board electrical connector disposed on the rear side of the capacitance test circuit board. The second adapter includes a second adapter circuit board and a second adapter electrical connector. The second adapter circuit board is located behind the capacitance test circuit board, and the extension direction of the second adapter circuit board is perpendicular to the extension direction of the capacitance test circuit board. The second adapter electrical connector is disposed on and electrically connected to the second adapter circuit board, and is capable of mating with the test board electrical connector.

[0011] The capacitance element measuring device of this utility model is suitable for measuring the electrical properties of multiple capacitance elements. The capacitance test circuit board provides a mounting and electrical connection for the multiple capacitance elements. The second control device includes multiple charge / discharge control modules, which are electrically connected to the multiple capacitance elements respectively through the capacitance test circuit board. The computer can drive the charge / discharge control module corresponding to one of the capacitance elements to operate, causing the charge / discharge control module corresponding to one of the capacitance elements to control the second discharge module to discharge the one of the capacitance elements, and the charge / discharge control module corresponding to one of the capacitance elements to control the current meter to measure the current of the one of the capacitance elements, and generate the real-time current measurement value of the one of the capacitance elements. When the computer determines that the real-time current measurement value corresponding to one of the capacitor elements is not greater than the current zeroing setting value, the computer drives the charging and discharging control module corresponding to that capacitor element to operate according to the charging time setting value. This causes the charging and discharging control module to control the power supply to charge the capacitor element, and the charging time for the capacitor element is equivalent to the charging time setting value. After the power supply has charged the capacitor element for the time equivalent to the charging time setting value, the computer drives the charging and discharging control module corresponding to that capacitor element to operate, causing the charging and discharging control module to control the current meter to measure the current of the capacitor element and generate the leakage current measurement value for that capacitor element. After the computer stores the leakage current measurement value for the capacitor element, the computer sequentially drives the charging and discharging control modules corresponding to the remaining capacitor elements to operate, enabling the current meter to measure the leakage current measurement value of each of the remaining capacitor elements. After the current meter measures the leakage current of each of the remaining capacitor elements, the computer receives and stores the leakage current measurement value.

[0012] The capacitance element measuring device of this utility model further includes a frame unit. The frame unit includes a frame body and at least two slide rail assemblies. The at least two slide rail assemblies extend front to back and are spaced apart to the left and right within the frame body, defining a sliding space. The sliding space allows the fixture device to be retracted and inserted from front to back.

[0013] The capacitance element measuring device of this utility model includes a slide rail assembly with a slide rail vertical wall, a slide rail bottom wall, and multiple rollers. Each slide rail vertical wall extends upward from the bottom of the frame body. The slide rail bottom walls of at least two slide rail assemblies are respectively disposed on adjacent sides of the slide rail vertical walls of the at least two slide rail assemblies, and the height of each slide rail bottom wall is lower than the height of each slide rail vertical wall. The rollers of the at least two slide rail assemblies are arranged front-to-back and rotatably disposed on adjacent sides of the slide rail vertical walls, spaced apart from the top surface of the slide rail bottom wall. The adjacent side of the slide rail vertical wall, the top surface of the slide rail bottom wall, and the rollers together define the sliding space.

[0014] The capacitance element measuring device of this utility model includes a fixture device further comprising a support frame disposed on the front, left, and right sides of the capacitance test circuit board, and a handle disposed on the front side of the support frame. The handle is for hand gripping. When the fixture device is placed in the sliding space, the left and right sides of the support frame are placed on the top surface of the bottom wall of the slide rail, so that the capacitance test circuit board is spaced apart from the frame body and does not contact it.

[0015] The beneficial effects of this utility model are as follows: By driving the first control device through the computer, the capacitance meter is controlled to measure the capacitance value of the capacitor element, and the computer stores the capacitance value. This allows the capacitor element measuring device to be used for measuring the capacitance and loss characteristics of the capacitor element, and also allows the capacitor element measuring device to automatically record the measurement results, thereby reducing the steps of manual operation and avoiding the problems of errors or inaccurate recording caused by human factors, thus improving the measurement efficiency, accuracy, and reliability. Furthermore, by driving the second control device through the computer, the current meter is controlled to measure the leakage current value of the capacitor element, and the computer stores the leakage current value. This allows the capacitor element measuring device to be used for measuring the leakage current characteristics of the capacitor element, and also allows the capacitor element measuring device to automatically record the measurement results, similarly reducing the steps of manual operation and avoiding the problems of errors or inaccurate recording caused by human factors, thus improving the measurement efficiency, accuracy, and reliability. Attached Figure Description

[0016] Figure 1 This is a perspective view illustrating an embodiment of the capacitance element measuring device of this utility model applied to multiple capacitance elements.

[0017] Figure 2 This is a perspective view of the embodiment applied to the capacitor element from another angle;

[0018] Figure 3 This is an exploded perspective view illustrating the implementation details of the described embodiment and the capacitor element;

[0019] Figure 4 It is different Figure 1 , Figure 2 A perspective view illustrating the implementation details of the framework unit of the embodiment;

[0020] Figure 5 It is similar Figure 2 A magnified view of a portion of the perspective illustrates the implementation of the transfer device, probe unit, and first adapter device in the embodiment for measuring capacitance and loss characteristics.

[0021] Figure 6 It is similar Figure 2 A magnified view of a portion of the perspective illustrates the implementation method of the transfer device, the probe unit, and the first adapter for measuring capacitance and loss characteristics;

[0022] Figure 7 This is a block diagram illustrating the connection relationships between the capacitance meter, computer, fixture device, first control device, probe unit, transfer device and first adapter device, and capacitor element in the embodiment described above.

[0023] Figure 8 This is a block diagram illustrating the connection relationships of the computer, current meter, power supply, fixture device, second control device and second adapter device, and capacitor element in the embodiment described. Detailed Implementation

[0024] See Figures 1 to 8 This is an embodiment of the capacitance element measuring device of this utility model. The capacitance element measuring device is suitable for measuring the electrical properties of multiple capacitance elements 9 one by one. For example, in capacitance and loss characteristic measurement, the capacitance value of each capacitance element 9 is measured; in leakage current characteristic measurement, the current value of each capacitance element 9 is measured. Each capacitance element 9 is used to store electrical energy and has a positive terminal and a negative terminal (not shown in the figure). The capacitance element measuring device includes a capacitance meter 100 and a computer 200 (see figure). Figure 7 , Figure 8The system comprises a current meter 300, a power supply 400, a frame unit 1, two fixture devices 2, a first control device 3, a probe unit 4, a second control device 5, a first adapter 6, a transfer device 7, and a second adapter 8. In this embodiment, the number of capacitor elements 9 is exemplified by twenty, with ten capacitor elements 9 inserted into one fixture device 2. The two fixture devices 2 are used separately in capacitance and loss characteristic measurement and leakage current characteristic measurement, but in other embodiments, the number of capacitor elements 9 may be only one or other numbers, not limited to twenty. One of the two fixture devices 2 and its corresponding capacitor element 9 may be omitted, and the other fixture device 2 is used to insert the remaining plurality of capacitor elements 9, which are used alternately in the capacitance and loss characteristic measurement and leakage current characteristic measurement processes.

[0025] See Figure 1 The capacitance meter 100 is used for capacitance measurement. The capacitance meter 100 is, for example, an LCR meter, used to measure the inductance (L), capacitance (C), and resistance (R) of electronic components, but it can also be other types of capacitance measurement instruments. The current meter 300 is, for example, a leakage current meter, but not limited thereto, used for current measurement. The power supply 400 is used to provide electrical energy. In this embodiment, the power supply 400 is an adjustable power supply 400 with an adjustable output voltage, used to provide high-voltage electrical energy, but it can also be a power supply with a fixed output voltage, and is not limited to a specific type.

[0026] See Figures 1 to 4The frame unit 1 includes a frame body 11, four slide rail assemblies 12, a base plate 13, two platforms 14, a first mounting plate 15, a second mounting plate 16, and a third mounting plate 17. The frame body 11 extends along mutually perpendicular directions X (left-right), Y (front-back), and Z (up-down), and is a hollow cubic frame. The base plate 13 extends along the X and Y directions and is located at the bottom of the frame body 11. The two platforms 14 are mounted on the frame body 11 and located above the base plate 13, and are spaced apart along the Z direction. In this embodiment, the upper platform 14 is used to place the capacitance meter 100, and the lower platform 14 is used to place the current meter 300 and the power supply 400. However, the capacitance meter 100, the current meter 300, and the power supply 400 can also be placed inside or outside the frame body 11 in other arrangements. The placement of the capacitance meter 100, the current meter 300, and the power supply 400 is not limited to a specific location. Furthermore, the frame body 11 can also be other shapes, not limited to a cubic frame.

[0027] The four slide rail assemblies 12 extend along the front-rear direction Y and are arranged in the left-right direction X within the frame body 11. The four slide rail assemblies 12 are arranged in pairs. The two slide rail assemblies 12 in each pair are adjacent to each other and spaced apart, defining a sliding space 121. The two sliding spaces 121 allow the two fixture devices 2 to be inserted and withdrawn from front to back. Specifically, each slide rail assembly 12 has a slide rail upright wall 122 extending upward from the bottom of the frame body 11 and along the front-rear direction Y, a slide rail bottom wall 123 disposed on the same side of the slide rail upright wall 122, and a plurality of rollers 124. The slide rail bottom walls 123 of the two slide rail assemblies 12 in each pair are respectively disposed on the adjacent side of the slide rail upright walls 122 of the two slide rail assemblies 12 and extend along the front-rear direction Y. The height of each slide rail bottom wall 123 is lower than the height of each slide rail upright wall 122. The rollers 124 of the two slide rail assemblies 12 in each group are arranged at intervals in the front-rear direction Y and are rotatably mounted on the slide rail vertical wall 122, and spaced apart from the top surface of the slide rail bottom wall 123. The adjacent side of the slide rail vertical wall 122 of the two slide rail assemblies 12 in each group, the top surface of the slide rail bottom wall 123, and the rollers 124 together define the sliding space 121. When each of the fixture devices 2 is placed into or removed from the corresponding sliding space 121, the rollers 124 of the two slide rail assemblies 12 in each group are driven to rotate by the left and right sides of the fixture device 2, facilitating the movement of the fixture device 2 within the sliding space 121. In this embodiment, the slide rail vertical walls 122 of the two middle slide rail assemblies 12 are connected to each other and can be considered as a single integral structure. On the other hand, in an embodiment where one of the two fixture devices 2 and the corresponding capacitor element 9 are omitted, the number of slide rail assemblies 12 may also be only two, and the frame unit 1 may have only one sliding space 121 for one fixture device 2 to be placed.

[0028] The first mounting plate 15 extends along the left-right direction X and the up-down direction Z, and is disposed inside the frame body 11 and behind the slide rail assembly 12. The first mounting plate 15 is used for the first adapter 6 and the second adapter 8 to be arranged in the left-right direction X. The second mounting plate 16 extends along the left-right direction X and the up-down direction Z, and is disposed behind the platform 14 located below, and is disposed for the first control device 3. The third mounting plate 17 extends along the front-back direction Y and the up-down direction Z, and is disposed on the right side of the frame body 11 (in the left-right direction X, the arrow points to the right), and is disposed for the second control device 5. However, the first adapter 6, the second adapter 8, the first control device 3, and the second control device 5 can also be disposed inside or outside the frame body 11 in other ways, and the positions of the first adapter 6, the second adapter 8, the first control device 3, and the second control device 5 are not limited to a specific position.

[0029] Each of the aforementioned fixture devices 2 includes a capacitance test circuit board 21, a support frame 22, a handle 23, and a test board electrical connector 24. Each capacitance test circuit board 21 has a circuit pattern (not shown) and provides for the insertion and electrical connection of ten capacitor elements 9. Each capacitance test circuit board 21 extends horizontally, that is, it extends along the left-right direction X and the front-back direction Y. Each test board electrical connector 24 is located on the rear side of the capacitance test circuit board 21. Multiple terminals of each test board electrical connector 24 are electrically connected to the ten capacitor elements 9 inserted into the capacitance test circuit board 21 via the circuit pattern of the capacitance test circuit board 21. Each support frame 22 is located on the front, left, and right sides of the capacitance test circuit board 21 (in the left-right direction X, the opposite direction of the arrow is left; in the front-back direction Y, the arrow points to the rear, and the opposite direction is front). Each of the aforementioned handles 23 is located on the front side of the support frame 22 and is provided for an operator's (not shown) hand to grip, facilitating the pulling of the fixture device 2 from the sliding space 121. When each of the fixture devices 2 is placed in the sliding space 121 of the two slide rail assemblies 12 of each group, the left and right sides of the support frame 22 are placed on the top surface of the slide rail bottom wall 123, so that the capacitance test circuit board 21 is spaced apart from the frame body 11 and does not contact it. This avoids accidental contact by the operator due to leakage of the capacitor element 9, thereby improving safety. However, in some embodiments, the support frame 22 and the handles 23 of each of the fixture devices 2 can be omitted, and the capacitance test circuit board 21 of each of the fixture devices 2 can be directly placed on the top surface of the slide rail bottom wall 123 of the two slide rail assemblies 12 of each group, depending on the actual needs. In addition, the capacitance test circuit board 21 of each of the fixture devices 2 may be used to insert only one or more but not more than ten of the capacitor elements 9, depending on the actual test requirements.

[0030] See Figure 2 and Figure 5 The transfer device 7 is disposed within the frame body 11 and located behind the first mounting plate 15, and includes a guide rail 71 located above the base plate 13 and extending along the left-right direction X, a first cylinder 72 mounted on the guide rail 71, a first base 73 connected to one end of the first cylinder 72 and capable of being driven by the first cylinder 72 to move relative to the guide rail 71 along the extension direction of the guide rail 71, a second cylinder 74 mounted on the first base 73 and capable of being driven by the first base 73 to move, and a second base 75 connected to one end of the second cylinder 74 and capable of being driven by the second cylinder 74 to move relative to the first base 73 in the front-rear direction Y.

[0031] See Figure 5 and Figure 7 The probe unit 4 is disposed on the second base 75 and can be moved relative to the first adapter 6 by being driven by the second base 75 or the first base 73. The probe unit 4 includes two discharge probes 41 and four measurement probes 42. In this embodiment, one of the two discharge probes 41 and two of the four measurement probes 42 are disposed on the top of the second base 75 and arranged in an inverted triangle pattern; while the other of the two discharge probes 41 and the other two of the four measurement probes 42 are disposed on the bottom of the second base 75 and arranged in an equilateral triangle pattern. However, the two discharge probes 41 and the four measurement probes 42 can also be arranged in other ways, not limited to a triangular distribution.

[0032] See Figure 3 , Figure 5 and Figure 7 The first adapter device 6 includes a first adapter circuit board 61 and a first adapter electrical connector 62 disposed on the first adapter circuit board 61. The first adapter circuit board 61 is located behind the slide rail assembly 12 and the capacitance test circuit board 21, and is disposed within the first mounting plate 15. The extension direction of the first adapter circuit board 61 is perpendicular to the extension direction of the capacitance test circuit board 21, that is, the first adapter circuit board 61 extends along the left-right direction X and the up-down direction Z. The first adapter circuit board 61 has a plurality of contact groups 611 exposed on the rear side of the first mounting plate 15. The plurality of contact groups 611 are arranged in the left-right direction X and are respectively electrically connected to a plurality of terminals of the first adapter electrical connector 62. The first adapter electrical connector 62 can be mated with or detached from the test board electrical connector 24 of one of the fixture devices 2. When the test board electrical connector 24 of one of the fixture devices 2 mates with the first adapter electrical connector 62 of the first adapter device 6, the plurality of contact groups 611 of the first adapter device 6 are sequentially electrically connected to the plurality of capacitor elements 9 inserted into the capacitor test circuit board 21 via the first adapter electrical connector 62, the test board electrical connector 24, and the capacitor test circuit board 21, respectively. In this embodiment, the number of contact groups 611 is not less than the number of the plurality of capacitor elements 9 inserted into the capacitor test circuit board 21.

[0033] In detail, each of the contact groups 611 has two discharge contacts 611a and four measurement contacts 611b. The two discharge contacts 611a of each contact group 611 respectively allow the two discharge probes 41 to make separable contact and be electrically connected. The four measurement contacts 611b of each contact group 611 respectively allow the four measurement probes 42 to make separable contact and be electrically connected. The two discharge probes 41 sequentially connect to the capacitor element 9 corresponding to the contact group 611 via two discharge contacts 611a of one of the contact groups 611, the first adapter connector 62, the test board connector 24, and the capacitance test circuit board 21, for discharging the corresponding capacitor element 9. The four measurement probes 42 sequentially connect to the capacitor element 9 corresponding to the contact group 611 via four measurement contacts 611b of the contact group 611 contacted by the two discharge probes 41, the first adapter connector 62, the test board connector 24, and the capacitance test circuit board 21, for performing four-point measurements on the corresponding capacitor element 9. However, in an embodiment where the fixture device 2 only accommodates one capacitor element 9, the first adapter device 6 and the transfer device 7 can be omitted, and the probe unit 4 can directly contact the circuit pattern of the capacitance test circuit board 21 and connect to the capacitor element 9, depending on actual requirements.

[0034] See Figure 7 The first control device 3 includes a first discharge module 31 for discharge and voltage measurement, a discharge control module 32 electrically connected to the first discharge module 31, a capacitance measurement control module 33 electrically connected to the capacitance meter 100, and a first transmission and communication module 34 electrically connected to the discharge control module 32 and the capacitance measurement control module 33. The discharge control module 32 is electrically connected to the two discharge probes 41 via wires not shown in the figure. The capacitance measurement control module 33 is electrically connected to the four measurement probes 42 via wires not shown in the figure. The first transmission and communication module 34 is used for communication or signal transmission. In this embodiment, the first transmission and communication module 34 is a Universal Serial Bus (USB), but it can also be a network card or a wireless network device, and is not limited to USB.

[0035] See Figure 2 and Figure 8The second adapter device 8 includes a second adapter circuit board 81, a second adapter electrical connector 82, a second positive electrical connector 83, and a second negative electrical connector 84 disposed on the second adapter circuit board 81. The second adapter circuit board 81 has a circuit pattern (not shown) for electrically connecting the second adapter electrical connector 82, the second positive electrical connector 83, and the second negative electrical connector 84. The second adapter circuit board 81 is located behind the slide rail assembly 12 and the capacitance test circuit board 21, and is disposed within the first mounting plate 15. The second adapter device 8 and the first adapter device 6 are respectively aligned with the two sliding spaces 121. The extension direction of the second adapter circuit board 81 is perpendicular to the extension direction of the capacitance test circuit board 21, that is, the second adapter circuit board 81 extends along the left-right direction X and the up-down direction Z. The second adapter electrical connector 82 can be docked with or detached from the test board electrical connector 24 of another fixture device 2. When the test board electrical connector 24 of the other fixture device 2 is connected to the second adapter electrical connector 82 of the second adapter device 8, the multiple terminals of the second positive electrical connector 83 are sequentially connected to the positive terminals of the multiple capacitor elements 9 inserted in the capacitor test circuit board 21 via the second adapter circuit board 81, the second adapter electrical connector 82, the test board electrical connector 24 and the capacitor test circuit board 21, respectively. And the multiple terminals of the second negative electrical connector 84 are sequentially connected to the negative terminals of the multiple capacitor elements 9 inserted in the capacitor test circuit board 21 via the second adapter circuit board 81, the second adapter electrical connector 82, the test board electrical connector 24 and the capacitor test circuit board 21, respectively. However, in the embodiment where the fixture device 2 is used to insert only one capacitor element 9, the second adapter circuit board 81 and the test board electrical connector 24 can be omitted, and the second positive electrical connector 83 and the second negative electrical connector 84 are directly disposed on the capacitor test circuit board 21. In this way, the second positive electrical connector 83 can still be electrically connected to the positive terminal of the capacitor element 9, and the second negative electrical connector 84 can also be electrically connected to the negative terminal of the capacitor element 9, depending on the actual needs.

[0036] See Figure 8The second control device 5 includes a second discharge module 51 for discharging, multiple charge / discharge control modules 52 electrically connected to the current meter 300, the power supply 400, and the second discharge module 51, a second transmission and communication module 53 electrically connected to the multiple charge / discharge control modules 52, a first positive electrical connector 54, and a first negative electrical connector 55. The second transmission and communication module 53 is used for communication or signal transmission. The first positive electrical connector 54 and the second positive electrical connector 53 can be connected or disconnected. The first negative electrical connector 55 and the second negative electrical connector 54 can be connected or disconnected. The positive terminals of the multiple charge / discharge control modules 52 are sequentially electrically connected to the positive terminals of the multiple capacitor elements 9 inserted into the capacitor test circuit board 21 via the first positive electrical connector 54, the second positive electrical connector 53, the second adapter circuit board 81, the second adapter electrical connector 82, the test board electrical connector 24, and the capacitor test circuit board 21, respectively. Furthermore, the negative terminals of the plurality of charge / discharge control modules 52 are sequentially connected to the negative terminals of the plurality of capacitor elements 9 inserted into the capacitor test circuit board 21 via the first negative electrical connector 55, the second negative electrical connector 84, the second adapter circuit board 81, the second adapter electrical connector 82, the test board electrical connector 24, and the capacitor test circuit board 21, respectively. In this embodiment, the second transmission communication module 53 is a Universal Serial Bus (USB), but the second transmission communication module 53 can also be a network card or a wireless network device, and is not limited to USB.

[0037] See Figure 7 and Figure 8 The computer 200 includes a storage module 201, a computer-side transmission and communication module 202, and a processing module 203. The storage module 201 is, for example, a hard disk, but not limited thereto, and stores a voltage safety setting (1 volt for example, but not limited thereto), a current zeroing setting (0 for example, but not limited thereto), and a charging time setting (60 seconds for example, but not limited thereto). The computer-side transmission and communication module 202 is, for example, a Universal Serial Bus (USB), a network card, or a wireless network device, but not limited thereto, and is capable of establishing links with the first transmission and communication module 34, the second transmission and communication module 53, and the transfer device 7. The processing module 203 is, for example, a central processing unit, but not limited thereto, and is electrically connected to the storage module 201 and the computer-side transmission and communication module 202.

[0038] See Figure 1 , Figure 7 and Figure 8 In use, firstly, the operator inserts the capacitor element 9 to be tested into the capacitance test circuit board 21 of the two fixture devices 2. Next, the operator places the two fixture devices 2 into the two sliding spaces 121 respectively, so that the test board electrical connectors 24 of the two fixture devices 2 are respectively connected to the first adapter electrical connector 62 of the first adapter device 6 and the second adapter electrical connector 82 of the second adapter device 8. Then, the computer 200 is operated to perform capacitance and loss characteristic measurement procedures on the capacitor element 9 inserted into one of the fixture devices 2, or the computer 200 is operated to perform leakage current characteristic measurement procedures on the capacitor element 9 inserted into the other fixture device 2. However, in an embodiment where one of the two fixture devices 2 and the corresponding capacitor element 9 are omitted, the operator can first place one fixture device 2 into one of the sliding spaces 121 and mate the test board electrical connector 24 of the fixture device 2 with the first adapter electrical connector 62 of the first adapter device 6 to perform capacitance and loss characteristic measurement. After the capacitance and loss characteristic measurement is completed, the fixture device 2 is placed into the other sliding space 121 and the test board electrical connector 24 of the fixture device 2 is mated with the second adapter electrical connector 82 of the second adapter device 8 to perform leakage current characteristic measurement. The operator can also reverse the order in which the fixture device 2 is mated with the first adapter electrical connector 62 and the second adapter electrical connector 82, performing leakage current characteristic measurement first and then capacitance and loss characteristic measurement, thus allowing the capacitor element 9 to complete both characteristic measurements.

[0039] See Figures 5 to 7 The following describes in detail the process of using the capacitance element measurement equipment for measuring capacitance and loss characteristics. First, the processing module 203 of the computer 200 is operable to drive the first cylinder 72 of the transfer device 7 via the computer-side communication module 202. This causes the probe unit 4, along with the first base 73, the second cylinder 74, and the second base 75, to move under the influence of the first cylinder 72 to a position where the probe unit 4 is aligned with one of the contact groups 611 (using the first contact group 611 as an example). When the probe unit 4 is aligned with the first contact group 611, the processing module 203 of the computer 200 drives the second cylinder 74 of the transfer device 7 to operate, causing the probe unit 4, along with the second base 75, to move towards the first adapter 6 and contact the first contact group 611 (see...). Figure 5After the probe unit 4 contacts the first contact group 611, the processing module 203 of the computer 200 can be operated or set to drive the discharge control module 32 through the computer-side transmission communication module 202. The discharge control module 32 then controls the first discharge module 31 to discharge and measure the voltage of the capacitor element 9 (using the first capacitor element as an example) corresponding to the first contact group 611 through the two discharge probes 41, generating a real-time voltage measurement value. Next, the first discharge module 31 transmits the real-time voltage measurement value to the processing module 203 through the first transmission communication module 34. After receiving the real-time voltage measurement value, the processing module 203 of the computer 200 compares the real-time voltage measurement value with the voltage safety setting value stored in the storage module 201. When the processing module 203 of the computer 200 determines that the real-time voltage measurement value is less than the voltage safety setting value (indicating that the first capacitor element 9 has completed discharging, preventing the capacitance meter 100 from being damaged by high-voltage surges during subsequent measurements), the processing module 203 of the computer 200 drives the capacitance measurement control module 33 to operate through the computer-side transmission communication module 202. The capacitance measurement control module 33 then controls the capacitance meter 100 to perform capacitance measurement on the first capacitor element 9 through the four measurement probes 42, generating a capacitance measurement value. After the capacitance meter 100 measures the capacitance value, it transmits the capacitance measurement value to the processing module 203 through the capacitance measurement control module 33 and the first transmission communication module 34. After the processing module 203 of the computer 200 receives the capacitance measurement value, the processing module 203 of the computer 200 stores the capacitance measurement value corresponding to the first capacitor element 9 in the storage module 201, thus completing the process of measuring the capacitance and loss characteristics of one capacitor element 9.

[0040] Then, the processing module 203 of the computer 200 can be operated or set to drive the transfer device 7 to operate again through the computer-side transmission communication module 202, and drive the probe unit 4 to move to contact the second contact group 611 (see...). Figure 6After the probe unit 4 contacts the second contact group 611, the processing module 203 of the computer 200 repeats the process described above after the probe unit 4 contacts the first contact group 611. The discharge control module 32 controls the first discharge module 31 to discharge and measure the voltage of the second capacitor element 9 corresponding to the second contact group 611 through the two discharge probes 41. After the second capacitor element 9 has discharged, the capacitance meter 100 measures the capacitance value of the second capacitor element 9, and the processing module 203 receives the capacitance value of the second capacitor element 9 and stores it in the storage module 201. In this way, the process of measuring the capacitance and loss characteristics of the next capacitor element 9 is completed. Finally, the processing module 203 of the computer 200 can be operated or configured to repeat the aforementioned process of measuring the capacitance and loss characteristics of the capacitor element 9 through the computer-side communication module 202, thereby driving the transfer device 7 to move the probe unit 4 to contact the remaining contact groups 611 one by one, so that the capacitance meter 100 can measure the capacitance value of the capacitor element 9 corresponding to each of the remaining contact groups 611. After the capacitance meter 100 measures the capacitance value of the capacitor element 9 corresponding to each of the remaining contact groups 611, the computer 200 receives and stores the capacitance value to complete the automated electrical measurement of multiple capacitor elements 9. However, in the embodiment where there is only one capacitor element 9, the computer 200 may also stop operating after completing the process of measuring the capacitance and loss characteristics of one capacitor element 9, depending on the actual needs.

[0041] See Figure 8The following describes the process of using the capacitor element measuring device for measuring leakage current characteristics. The processing module 203 of the computer 200 can be operated or configured to drive one of the charge / discharge control modules 52 (here, the first charge / discharge control module 52 is used as an example) through the computer-side transmission communication module 202. This causes the first charge / discharge control module 52 to control the second discharge module 51 to discharge the capacitor element 9 (here, the first capacitor element 9 is used as an example) corresponding to the first charge / discharge control module 52. The first charge / discharge control module 52 also controls the current meter 300 to measure the current of the first capacitor element 9 and generate a real-time current measurement value. Next, the current meter 300 transmits the real-time current measurement value to the processing module 203 through the second transmission communication module 53. After receiving the real-time current measurement value, the processing module 203 of the computer 200 compares the real-time current measurement value with the current zeroing setting value stored in the storage module 201. When the processing module 203 of the computer 200 determines that the real-time current measurement value is not greater than the current zeroing setting value, the processing module 203 of the computer 200 drives the first charging and discharging control module 52 to operate according to the charging time setting value, so that the first charging and discharging control module 52 controls the power supply 400 to charge the first capacitor element 9, and the charging time of the power supply 400 on the first capacitor element 9 is equivalent to the charging time setting value. After the power supply 400 charges the first capacitor element 9 for the time equivalent to the charging time setting value, the processing module 203 of the computer 200 drives the first charging and discharging control module 52 to operate through the computer-side transmission communication module 202, so that the first charging and discharging control module 52 controls the current meter 300 to measure the current of the first capacitor element 9 and generate a leakage current measurement value. After the current meter 300 measures the leakage current value, it transmits the leakage current value to the processing module 203 via the first charge / discharge control module 52 and the second transmission communication module 53. Upon receiving the leakage current value, the processing module 203 of the computer 200 stores the leakage current value corresponding to the first capacitor element 9 in the storage module 201, thus completing the leakage current characteristic measurement process for one capacitor element 9.

[0042] Then, the processing module 203 of the computer 200 can be operated or configured to drive the second charging / discharging control module 52 corresponding to the next capacitor element 9 (taking the second capacitor element 9 as an example) again through the computer-side communication module 202. This causes the second charging / discharging control module 52 to control the second discharging module 51 to discharge the second capacitor element 9, and the second charging / discharging control module 52 to control the current meter 300 to measure the current of the second capacitor element 9, generating the real-time current measurement value corresponding to the second capacitor element 9. When the processing module 203 of the computer 200 determines that the real-time current measurement value of the second capacitor element 9 is not greater than the current zeroing setting value, the processing module 203 of the computer 200 drives the second charging / discharging control module 52 to operate according to the charging time setting value. This causes the second charging / discharging control module 52 to control the power supply 400 to charge the second capacitor element 9, and the charging time of the power supply 400 for the second capacitor element 9 is equivalent to the charging time setting value. After the power supply 400 charges the second capacitor element 9 for a period of time equivalent to the set charging time, the processing module 203 of the computer 200 drives the second charge-discharge control module 52 to operate. The second charge-discharge control module 52 controls the current meter 300 to measure the current of the second capacitor element 9 and generates a corresponding leakage current measurement value. The processing module 203 receives the leakage current measurement value of the second capacitor element 9 and stores it in the storage module 201. This completes the process of measuring the leakage current characteristics of the next capacitor element 9. Finally, the processing module 203 of the computer 200 can be operated or configured to repeat the aforementioned process of measuring the leakage current characteristics of the capacitor element 9 through the computer-side communication module 202, thereby sequentially driving the charge-discharge control modules 52 corresponding to the remaining capacitor elements 9 to operate, enabling the current meter 300 to measure the leakage current measurement value of each of the remaining capacitor elements 9. After the current meter 300 measures the leakage current of each of the remaining capacitor elements 9, the computer 200 receives and stores the leakage current measurement values ​​to complete the automated electrical measurement of multiple capacitor elements 9. However, in an embodiment where there is only one capacitor element 9, the computer 200 may also stop operating after completing the leakage current characteristic measurement process of one capacitor element 9, depending on the actual needs.

[0043] In summary, by driving the first control device 3 through the computer 200, the capacitance meter 100 is controlled to measure the capacitance value of the capacitor element 9, and the computer 200 stores the capacitance value. This allows the capacitance element measuring device to be used to measure the capacitance and loss characteristics of the capacitor element 9, and also allows the capacitance element measuring device to automatically record the measurement results. This reduces the steps of manual operation and avoids the problems of errors or inaccurate recording caused by human factors, thereby improving the measurement efficiency, accuracy and reliability. Furthermore, by driving the second control device 5 through the computer 200, the current meter 300 is controlled to measure the leakage current value of the capacitor element 9, and the computer 200 stores the leakage current value. This allows the capacitor element measuring device to be used to measure the leakage current characteristics of the capacitor element 9, and also allows the capacitor element measuring device to automatically record the measurement results. This also reduces the steps of manual operation, avoids the problems of errors or inaccurate recording caused by human factors, and thus improves the measurement efficiency and accuracy. Therefore, it can indeed achieve the purpose of this utility model.

[0044] The above description is merely an embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A capacitance element measuring device, suitable for measuring the electrical properties of at least one capacitance element, characterized in that: The capacitance element measuring device includes: The fixture includes a capacitance test circuit board, which is used for inserting and electrically connecting the capacitor element. Capacitance meter, used for measuring capacitance; The first control device includes a first discharge module for discharging and voltage measurement, a discharge control module electrically connected to the first discharge module, a capacitance measurement control module electrically connected to the capacitance meter, and a first transmission communication module electrically connected to the discharge control module and the capacitance measurement control module. A probe unit, electrically connected to the capacitor element via the capacitance test circuit board, includes two discharge probes and four measurement probes. The two discharge probes are electrically connected to the discharge control module, and the four measurement probes are electrically connected to the capacitance measurement control module and used for four-point measurement. The computer stores voltage safety settings and is able to establish a link with the first transmission and communication module. The computer can drive the discharge control module to operate, enabling the discharge control module to control the first discharge module to discharge and measure the voltage of the capacitor element through the two discharge probes, and generate a real-time voltage measurement value. After receiving the real-time voltage measurement value, the computer compares the real-time voltage measurement value with the voltage safety setting value. When the computer finds that the real-time voltage measurement value is less than the voltage safety setting value, the computer drives the capacitance measurement control module to operate, enabling the capacitance measurement control module to control the capacitance meter to measure the capacitance of the capacitor element through the four measurement probes, and generate a capacitance measurement value. After the capacitance meter measures the capacitance value, the computer receives and stores the capacitance measurement value.

2. The capacitance element measuring device according to claim 1, characterized in that: The capacitance element measuring device further includes a first adapter, the capacitance test circuit board extends horizontally, and the fixture device further includes a test board electrical connector disposed on the rear side of the capacitance test circuit board. The first adapter includes a first adapter circuit board and a first adapter electrical connector. The first adapter circuit board is located behind the capacitance test circuit board, and the extension direction of the first adapter circuit board is perpendicular to the extension direction of the capacitance test circuit board. The first adapter circuit board has at least one contact group, which allows the probe unit to make separable contact and electrical connection. The first adapter electrical connector is disposed on the first adapter circuit board and electrically connected to the contact group, and can mate with the test board electrical connector.

3. The capacitance element measuring device according to claim 2, characterized in that: The capacitance element measurement device is also suitable for measuring the electrical properties of multiple capacitance elements, and further includes a transfer device. The capacitance test circuit board is used for inserting and electrically connecting the multiple capacitance elements. The first adapter circuit board has multiple contact groups, which are arranged horizontally and electrically connected to the multiple capacitance elements respectively through the capacitance test circuit board. The computer can establish a link with the transfer device. The transfer device includes a horizontally extending guide rail, a first cylinder mounted on the guide rail, a first base connected to one end of the first cylinder and capable of moving horizontally relative to the guide rail by the first cylinder, a second cylinder mounted on the first base, and a second base connected to one end of the second cylinder and capable of moving back and forth relative to the first base by the second cylinder. The second base is used for the probe unit. Before the computer drives the discharge control module to operate, so that the discharge control module controls the first discharge module to discharge and measure the voltage of the capacitance element through the two discharge probes, the computer drives the first cylinder of the transfer device to operate, so that the probe unit is connected to the first cylinder of the transfer device to operate. The first base, the second cylinder, and the second base are moved by the first cylinder to a position where the probe unit aligns with one of the contact groups. When the probe unit aligns with one of the contact groups, the computer drives the second cylinder of the transfer device to operate, causing the probe unit and the second base to move towards the first transfer device and contact one of the contact groups. After the probe unit contacts one of the contact groups, the capacitance meter measures the capacitance value of the capacitor element corresponding to that contact group. After the computer stores the capacitance value of the capacitor element corresponding to one of the contact groups, the computer drives the transfer device to move the probe unit to contact the remaining contact groups one by one, so that the capacitance meter can measure the capacitance value of the capacitor element corresponding to each of the remaining contact groups. After the capacitance meter measures the capacitance value of the capacitor element corresponding to each of the remaining contact groups, the computer receives and stores the capacitance value.

4. A capacitance element measuring device, suitable for measuring the electrical properties of at least one capacitance element, characterized in that: The capacitance element measuring device includes: The fixture includes a capacitance test circuit board, which is used for inserting and electrically connecting the capacitor element. Current meter, used for current measurement; A power supply is used to provide electrical energy; The second control device includes a second discharge module for discharging, at least one charge-discharge control module electrically connected to the current meter, the power supply and the second discharge module, and a second transmission communication module electrically connected to the charge-discharge control module. The charge-discharge control module is electrically connected to the capacitor element through the capacitor test circuit board. and The computer stores the current zeroing setting value and the charging time setting value, and is able to establish a link with the second transmission and communication module. The computer can drive the charging and discharging control module to operate, enabling the charging and discharging control module to control the second discharging module to discharge the capacitor element, and the charging and discharging control module to control the current meter to measure the current of the capacitor element and generate a real-time current measurement value; after receiving the real-time current measurement value, the computer compares the real-time current measurement value with the current zeroing set value; when the computer determines that the real-time current measurement value is not greater than the current zeroing set value, the computer drives the charging and discharging control module to operate according to the charging time set value. The computer operates by controlling the power supply to charge the capacitor element, and the charging time of the power supply to charge the capacitor element is equivalent to the charging time setting value. After the power supply has charged the capacitor element for the time equivalent to the charging time setting value, the computer drives the charging and discharging control module to operate, so that the charging and discharging control module controls the current meter to measure the current of the capacitor element and generate a leakage current measurement value. After the current meter measures the leakage current measurement value, the computer receives and stores the leakage current measurement value.

5. The capacitance element measuring device according to claim 4, characterized in that: The capacitance element measuring device further includes a second adapter, the capacitance test circuit board extends horizontally, and the fixture device further includes a test board electrical connector disposed on the rear side of the capacitance test circuit board. The second adapter includes a second adapter circuit board and a second adapter electrical connector. The second adapter circuit board is located behind the capacitance test circuit board, and the extension direction of the second adapter circuit board is perpendicular to the extension direction of the capacitance test circuit board. The second adapter electrical connector is disposed on the second adapter circuit board and electrically connected to the second adapter circuit board, and can mate with the test board electrical connector.

6. The capacitance element measuring device according to claim 5, characterized in that: The capacitance element measuring device is also suitable for measuring the electrical properties of multiple capacitance elements. The capacitance test circuit board is used for inserting and electrically connecting the multiple capacitance elements. The second control device includes multiple charge / discharge control modules, which are electrically connected to the multiple capacitance elements respectively through the capacitance test circuit board. The computer can drive the charge / discharge control module corresponding to one of the capacitance elements to operate, so that the charge / discharge control module corresponding to one of the capacitance elements controls the second discharge module to discharge the one of the capacitance elements, and the charge / discharge control module corresponding to one of the capacitance elements controls the current meter to measure the current of the one of the capacitance elements and generate the real-time current measurement value of the one of the capacitance elements. When the computer finds that the real-time current measurement value of the one of the capacitance elements is not greater than the current zeroing setting value, the computer drives the charge / discharge control module corresponding to the one of the capacitance elements to perform the following actions: The computer operates according to the charging time setting value, causing the charging and discharging control module corresponding to one of the capacitor elements to control the power supply to charge the one capacitor element, and the charging time of the power supply to charge the one capacitor element is equivalent to the charging time setting value; after the power supply to charge the one capacitor element for the time equivalent to the charging time setting value, the computer drives the charging and discharging control module corresponding to the one capacitor element to operate, causing the charging and discharging control module corresponding to the one capacitor element to control the current meter to measure the current of the one capacitor element and generate the leakage current measurement value of the one capacitor element; after the computer stores the leakage current measurement value of the one capacitor element, the computer sequentially drives the charging and discharging control modules corresponding to the remaining capacitor elements to operate, so that the current meter can measure the leakage current measurement value of each of the remaining capacitor elements one by one; After the current meter measures the leakage current of each of the remaining capacitor elements, the computer receives and stores the leakage current measurement value.

7. The capacitance element measuring device according to claim 1 or 4, characterized in that: The capacitance element measuring device further includes a frame unit, which includes a frame body and at least two slide rail assemblies. The at least two slide rail assemblies extend forward and backward and are spaced apart to the left and right within the frame body, defining a sliding space. The sliding space allows the fixture device to be inserted from front to back.

8. The capacitance element measuring device according to claim 7, characterized in that: Each of the slide rail assemblies has a slide rail vertical wall, a slide rail bottom wall, and a plurality of rollers. Each of the slide rail vertical walls extends upward from the bottom of the frame body. The slide rail bottom walls of at least two slide rail assemblies are respectively disposed on the adjacent side of the slide rail vertical walls of the at least two slide rail assemblies, and the height of each slide rail bottom wall is lower than the height of each slide rail vertical wall. The rollers of the at least two slide rail assemblies are arranged front to back and rotatably disposed on the adjacent side of the slide rail vertical wall and spaced apart from the top surface of the slide rail bottom wall. The adjacent side of the slide rail vertical wall, the top surface of the slide rail bottom wall, and the rollers together define the sliding space.

9. The capacitance element measuring device according to claim 8, characterized in that: The fixture device also includes a support frame disposed on the front, left and right sides of the capacitance test circuit board, and a handle disposed on the front side of the support frame. The handle is for hand gripping. When the fixture device is placed in the sliding space, the left and right sides of the support frame are placed on the top surface of the bottom wall of the slide rail, so that the capacitance test circuit board is spaced apart from the frame body and does not contact it.

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