A current impulse tester

Abstract

This utility model relates to the field of testing equipment technology, specifically to a current impulse tester; it includes a machine base, a human-machine interface panel, a DC power supply, and an auxiliary mechanism. The auxiliary mechanism includes a positioning seat, an insulating shell, a first socket, a second socket, a conductive sheet, and a limiting device. The DC power supply is connected to the two ends of the test terminal via connecting cables, at which point the current is not conducted. After inserting the mating part of the test terminal into the first and second sockets, conduction is achieved through the conductive sheet. During testing, a 24V DC power supply is used as the test power source, consistent with actual usage scenarios. The impulse current is greater than 30A. During the test, the device can be directly touched by hand, and temperature changes can be directly measured and observed using a contact thermometer. The conductive sheet increases the physical distance between the ends of the test terminal and physically increases the creepage distance, thereby addressing the issue of insufficient physical creepage distance in products and increasing the creepage distance between the electrodes of the tested product.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a current impulse tester. Background Technology

[0002] Among the many tests performed on connector terminals, the current surge test verifies the reliability by measuring the resistance value generated when current flows through the contact surface of the terminal. The principle is to energize the connector terminal and subject it to a specified large current surge for a short time, measure the voltage across the connector to obtain the resistance value, and confirm whether the resistance and overcurrent capacity of the terminal are qualified.

[0003] Currently, when conducting current surge tests on terminals, most methods involve directly connecting test leads to both sides of the terminal and then applying power for testing. However, some products require increasingly higher voltages for storing high-voltage electricity, while their physical size is decreasing. This results in insufficient physical distance between the product and the high-voltage test site, leading to physical creepage or ionization discharge in the air. This cannot meet the requirements of mass production, making the product cost unsuitable for market demands. Utility Model Content

[0004] The purpose of this invention is to provide a current surge tester that can increase the creepage distance between the electrodes of the tested product, addressing the issue of insufficient physical creepage distance.

[0005] To achieve the above objectives, this utility model provides a current impulse tester, including a machine base, a human-machine interface panel on the left front side of the machine base, a DC power supply on the right side, and an auxiliary mechanism.

[0006] The auxiliary mechanism includes a positioning seat, an insulating shell, a first socket, a second socket, a conductive sheet, and a limiting device. The positioning seat is detachably connected to the machine base and is located on the machine base. The insulating shell is detachably connected to the positioning seat. The first socket and the second socket are fixedly disposed inside the insulating shell and are interconnected through the conductive sheet. The limiting device is disposed on the front side of the insulating shell.

[0007] The machine platform is also equipped with a first display screen and a second display screen. The first display screen is located on the left rear side of the machine platform, and the second display screen is located on one side of the first display screen.

[0008] The limiting device includes a limiting block and a locking assembly. The limiting block is abutted against the positioning seat and the front side of the insulating shell. The locking assembly is located on the side of the machine base near the limiting block.

[0009] The locking assembly includes a pin and a threaded pin. The pin is slidably connected to the machine base and the limiting block, and its bottom penetrates the machine base. The threaded pin is slidably connected to the limiting block and is threadedly connected to the machine base.

[0010] The auxiliary mechanism further includes a placement device, which includes a support plate and a partition. The support plate is located on the right side of the machine base, and the partition is installed in the stepped cavity of the support plate.

[0011] This utility model discloses a current impulse tester. During testing, a DC power supply is first connected to the two ends of the test terminal via a connecting cable. At this time, the current is not conducting. Further, the mating part of the test terminal is inserted into the first socket and the second socket, and conduction is achieved through the conductive sheet. A 24V DC power supply is used as the test power supply, consistent with the actual use scenario. The impulse current is greater than 30A. During the test, it can be touched directly by hand, and temperature changes can be measured and observed directly with a contact thermometer. The conductive sheet increases the physical distance between the ends of the test terminal and physically increases the creepage distance, thereby addressing the problem of insufficient physical creepage distance of the product and increasing the creepage distance between the electrodes of the tested product. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of the current impact tester according to the first embodiment of this utility model.

[0014] Figure 2 This is the first embodiment of the present utility model. Figure 1 Enlarged view of point A in the middle.

[0015] Figure 3 This is a cross-sectional view of the insulating shell according to the first embodiment of this utility model.

[0016] Figure 4 This is a schematic diagram of the overall structure of the current impact tester according to the second embodiment of this utility model.

[0017] In the diagram: 101-Machine base, 102-Human-machine interface panel, 103-DC power supply, 104-Positioning seat, 105-Insulating shell, 106-First socket, 107-Second socket, 108-Conductive sheet, 109-First display screen, 110-Second display screen, 111-Limiting block, 112-Pin, 113-Threaded pin, 201-Support plate, 202-Partition plate. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Example 1:

[0020] like Figures 1 to 3 As shown, where Figure 1 This is a schematic diagram of the overall structure of the current impulse tester. Figure 2 yes Figure 1 Enlarged view of point A in the middle. Figure 3 This is a cross-sectional view of the insulating shell 105. This utility model provides a current impulse tester, including a machine base 101, a human-machine interface panel 102, a DC power supply 103, and an auxiliary mechanism. The auxiliary mechanism includes a positioning seat 104, an insulating shell 105, a first socket 106, a second socket 107, a conductive sheet 108, and a limiting device. The limiting device includes a limiting block 111 and a locking assembly, which includes a pin 112 and a threaded pin 113. The aforementioned solution addresses the insufficient physical creepage distance of the product by increasing the creepage distance between the electrodes of the tested product. It is understood that the aforementioned solution can increase the creepage distance between the electrodes of the tested product.

[0021] In this embodiment, a human-machine interface panel 102 is provided on the left front side of the machine tool 101, and a DC power supply 103 is placed on the right side. The top of the DC power supply 103 is provided with a connection part for wire connection. A microcontroller is provided inside the housing of the human-machine interface panel 102, which is used for manual equipment control, such as equipment start-up and shutdown, setting the number of test cycles, etc., and is electrically connected to the DC power supply 103.

[0022] The positioning seat 104 is detachably connected to the machine base 101 and is located on the machine base 101. The insulating shell 105 is detachably connected to the positioning seat 104. The first socket 106 and the second socket 107 are fixedly disposed inside the insulating shell 105 and are interconnected through the conductive sheet 108. The limiting device is disposed on the front side of the insulating shell 105. The positioning seat 104 is fixed by bolts and has a non-penetrating T-shaped groove from the front to the rear side to facilitate the sliding installation of the T-shaped part at the bottom of the insulating shell 105. The insulating shell 105 is made of insulating plastic, and the first socket 106 and the second socket 107 are integrally cast during manufacturing. The conductive parts of the first socket 106 and the second socket 107 are all disposed on the bottom side wall and are connected by the conductive sheet 108. An insulating layer is disposed on the top of the conductive sheet 108 for insulation isolation. The limiting device is used to facilitate the disassembly and installation of the insulating shell 105.

[0023] Secondly, the machine tool 101 is also equipped with a first display screen 109 and a second display screen 110. The first display screen 109 is located on the left rear side of the machine tool 101; the second display screen 110 is located on one side of the first display screen 109. The first display screen 109 is used to display the current data of the DC power supply 103 during testing, and the second display screen 110 is used to display the voltage data of the DC power supply 103.

[0024] Then, the limiting block 111 abuts against the front side of the positioning seat 104 and the insulating shell 105; the locking assembly is disposed on the side of the machine base 101 near the limiting block 111. The limiting block 111 is provided with two symmetrical semi-circular grooves to facilitate the locking assembly to cooperate.

[0025] Finally, the pin 112 is slidably connected to the machine base 101 and the limiting block 111, and its bottom penetrates through the machine base 101; the threaded pin 113 is slidably connected to the limiting block 111 and threadedly connected to the machine base 101. After the pin 112 slides into the semi-circular groove on the limiting block 111, its bottom stepped portion penetrates through the machine base 101. The pin 112 is used for limiting assistance and can be directly slid upwards and removed later. The bottom stepped external thread end of the threaded pin 113 directly engages with the threaded hole on the machine base 101, and the top optical axis portion of the threaded pin 113 is attached to the semi-circular groove of the limiting block 111.

[0026] When using this invention to increase the creepage distance between electrodes of a product with insufficient physical creepage distance, the following steps are taken during testing: First, the resistance of the structure formed by the first socket 106, the conductive sheet 108, and the second socket 107, as well as the resistance of the terminals, are measured and recorded. Then, the DC power supply 103 is connected to the two ends of the test terminal via connecting cables. At this point, no current is conducted. Further, the mating part of the test terminal is inserted into the first socket 106 and the second socket 107, and then conduction is achieved through the conductive sheet 108. Subsequently, appropriate current parameters and impact time are set according to the situation. The parameters were tested, and after the final test, the resistance of the terminals was measured again and compared with that before the test. The test data was recorded. In this application, a 24V DC power supply was used as the test power supply, which is consistent with the actual use scenario. The inrush current is greater than 30A. During the test, it can be touched directly by hand, and the temperature can be measured and observed directly with a contact thermometer. The setting of the conductive sheet 108 increases the physical distance between the terminals and increases the creepage distance. This can address the problem of insufficient physical creepage distance of the product and increase the creepage distance between the electrodes of the tested product.

[0027] Example 2:

[0028] like Figure 4 As shown, where Figure 4 This is a schematic diagram of the overall structure of a current impulse tester. Based on the first embodiment, this utility model provides a current impulse tester. The auxiliary mechanism also includes a placement device, which includes a support plate 201 and a partition plate 202.

[0029] The support plate 201 is located on the right side of the machine base 101; the partition plate 202 is installed in the stepped cavity of the support plate 201. The support plate 201 is L-shaped and is fixed to the right side of the machine base 101 by bolts, and the partition plate 202 is cross-shaped and is fixed by bolts arranged from bottom to top.

[0030] In this embodiment, the support plate 201 and the partition plate 202 cooperate to form four cross-shaped isolation placement cavities, which can be used for the placement and coordination of some auxiliary tools or equipment during testing.

[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A current impulse tester, comprising a machine base, wherein a human-machine interface panel is provided on the left front side of the machine base, and a DC power supply is placed on the right side, characterized in that: It also includes auxiliary mechanisms; The auxiliary mechanism includes a positioning seat, an insulating shell, a first socket, a second socket, a conductive sheet, and a limiting device. The positioning seat is detachably connected to the machine base and is located on the machine base. The insulating shell is detachably connected to the positioning seat. The first socket and the second socket are fixedly disposed inside the insulating shell and are interconnected through the conductive sheet. The limiting device is disposed on the front side of the insulating shell.

2. The current impulse tester as described in claim 1, characterized in that: The machine platform is also equipped with a first display screen and a second display screen. The first display screen is located on the left rear side of the machine platform, and the second display screen is located on one side of the first display screen.

3. The current impulse tester as described in claim 1, characterized in that: The limiting device includes a limiting block and a locking assembly. The limiting block is abutted against the positioning seat and the front side of the insulating shell. The locking assembly is located on the side of the machine base near the limiting block.

4. The current impulse tester as described in claim 3, characterized in that: The locking assembly includes a pin and a threaded pin. The pin is slidably connected to the machine base and the limiting block, and its bottom penetrates the machine base. The threaded pin is slidably connected to the limiting block and is threadedly connected to the machine base.

5. The current surge tester of claim 1, wherein : The auxiliary mechanism also includes a placement device, which includes a support plate and a partition plate. The support plate is located on the right side of the machine base, and the partition plate is installed in the stepped cavity of the support plate.

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