CN212364535U - Automatic discharging device and ATE (automatic test equipment) tester after power supply filter capacitor test is finished - Google Patents
Automatic discharging device and ATE (automatic test equipment) tester after power supply filter capacitor test is finished Download PDFInfo
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- CN212364535U CN212364535U CN202020178732.0U CN202020178732U CN212364535U CN 212364535 U CN212364535 U CN 212364535U CN 202020178732 U CN202020178732 U CN 202020178732U CN 212364535 U CN212364535 U CN 212364535U
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Abstract
The device comprises a filter capacitor discharge control module, a first discharge unit 1 to an Nth discharge unit N, wherein N is an integer greater than or equal to 2; the first discharge unit to the Nth discharge unit are connected in parallel and then connected with the filter capacitor discharge control module; each discharging unit comprises an execution unit K and a discharging resistor R, and a positive connecting end and a negative connecting end which are connected with a filter capacitor C of a power supply are reserved after the execution unit K and the discharging resistor R are connected in series; when the filter capacitor C needs to be discharged, the filter capacitor discharge control module sends out control information S, all the execution units K are closed, and the execution units K, the discharge resistor R and the filter capacitor C form a loop, so that the filter capacitor C is discharged; otherwise, the filter capacitor discharge control module enables the execution unit K to be disconnected. The utility model discloses can overcome filter capacitor completely and leak the problem of discharging.
Description
Technical Field
The utility model relates to an automatic discharging device and ATE test machine after power filter capacitance test.
Background
The filter capacitor is an energy storage device, and is usually installed at both ends of a rectifying circuit to reduce the ripple coefficient of alternating current ripple so as to improve the high-efficiency smooth direct current output. The filter capacitor has electric polarity, one end of the filter capacitor is a positive electrode, the other end of the filter capacitor is a negative electrode, the positive electrode end is connected to the positive end of the rectification output circuit, and the negative electrode is connected to the negative end of the circuit. In all circuits which need to convert alternating current into direct current, the filter capacitor is arranged, so that the working performance of the electronic circuit is more stable, and meanwhile, the interference of alternating ripple waves to the electronic circuit is reduced. The larger the capacitance of the filter capacitor, the better the filter performance.
Power supply manufacturers test the electrical performance of power supplies before they leave the factory. During testing, the filter capacitor is charged, but after the testing is completed, the high-voltage filter capacitor must be discharged, so that the filter capacitor is prevented from discharging to other devices in the subsequent assembly process, and other devices are prevented from being damaged, such as the IC is broken down. Electrical performance testing of power supplies is typically performed using an ATE tester (english acronym for Automatic Test Equipment) (as shown in fig. 5). After the test is finished, the filter capacitor of the power supply needs to be discharged, and the conventional discharging method for the filter capacitor is generally manual operation, namely, a resistor (load) is connected in series on two output pins of the power supply to discharge; secondly, a plurality of power supplies of the jointed boards discharge at one time, and the current method is that a plug is arranged on each jointed board, each plug is provided with a power supply, all filter capacitors on the jointed boards are in a parallel connection state, and then a resistor is adopted to discharge all the filter capacitors at the same time.
The method for discharging a plurality of power supplies of the jointed boards at one time has the following problems: firstly, the discharge is incomplete, and the problem that the discharge does not reach the standard exists (generally, the voltage at two ends of a high-voltage filter capacitor after the discharge is required to be lower than 2V); the second is the problem of leakage discharge of a certain or a certain filter capacitor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem, the utility model provides a can overcome the power filter capacitor who leaks the discharge problem completely and leak automatic discharge device after the test to the society.
A second object of the present invention is to provide an ATE testing machine.
The technical scheme of the utility model is that: the automatic discharging device comprises a filter capacitor discharge control module, a first discharging unit 1 to an Nth discharging unit N, wherein N is an integer greater than or equal to 2; the first discharge unit to the Nth discharge unit are connected in parallel and then connected with the filter capacitor discharge control module; each discharging unit comprises an execution unit K and a discharging resistor R, and a positive connecting end and a negative connecting end which are connected with a filter capacitor C of a power supply are reserved after the execution unit K and the discharging resistor R are connected in series; when the filter capacitor C needs to be discharged, the filter capacitor discharge control module sends out control information S, all the execution units K are closed, and the execution units K, the discharge resistor R and the filter capacitor C form a loop, so that the filter capacitor C is discharged; otherwise, the filter capacitor discharge control module enables the execution unit K to be disconnected.
As a modification to the present invention, the execution unit K is a relay or a thyristor.
As right the utility model discloses an improvement, discharge resistance R's resistance is decided according to the electric capacity of the filter capacitor C of different varieties power.
As an improvement of the present invention, the N is an integer of 2 or more, which means that 2 to 20 is selected.
The utility model also provides an ATE test machine, including electrical property detection module and control module, wherein, the electrical property detection module detects the electrical property parameter of power under control module's control, the utility model discloses still include the filtering capacitor discharge control module, first discharge unit 1 to Nth discharge unit N, wherein, N is the integer more than or equal to 2; the first discharge unit 1 to the Nth discharge unit N are connected in parallel and then are connected with the filter capacitor discharge control module; each discharging unit comprises an execution unit K and a discharging resistor R, and a positive connecting end and a negative connecting end which are connected with a filter capacitor C of a power supply are reserved after the execution unit K and the discharging resistor R are connected in series; when the filter capacitor C needs to be discharged, the filter capacitor discharge control module 10 sends out control information S to close all the execution units K, so that the execution units K, the discharge resistor R and the filter capacitor C form a loop, and the filter capacitor C is discharged; otherwise, the filter capacitor discharge control module enables the execution unit K to be disconnected.
As a modification to the present invention, the execution unit K is a relay or a thyristor.
As right the utility model discloses an improvement, discharge resistance R's resistance is decided according to the electric capacity of the filter capacitor C of different varieties power.
As an improvement of the present invention, the N is an integer of 2 or more, which means that 2 to 20 is selected.
As an improvement to the present invention, the electrical performance parameters include current phase, voltage and/or current parameters.
The utility model adopts the discharge control module comprising the filter capacitor, and the first discharge unit 1 to the Nth discharge unit N, wherein N is an integer more than or equal to 2; the first discharge unit to the Nth discharge unit are connected in parallel and then connected with the filter capacitor discharge control module; each discharging unit comprises an execution unit K and a discharging resistor R, and a positive connecting end and a negative connecting end which are connected with a filter capacitor C of a power supply are reserved after the execution unit K and the discharging resistor R are connected in series; when the filter capacitor C needs to be discharged, the filter capacitor discharge control module sends out control information S, all the execution units K are closed, and the execution units K, the discharge resistor R and the filter capacitor C form a loop, so that the filter capacitor C is discharged; otherwise, the filter capacitor discharge control module makes the execution unit K disconnected, so the utility model can completely overcome the problem of filter capacitor discharge leakage; because the final voltage detection module is adopted, the module can judge whether the direct current output voltage of the discharge result reaches the preset voltage according to the voltage output by the direct current output end DC of the detected power supply, so that the problem that the filter capacitor is not discharged in place can be avoided.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a detailed structural schematic diagram of the filter capacitor discharge control module of fig. 1.
FIG. 3 is a block diagram of a module of the ATE tester of FIG. 1.
Figure 4 is a block schematic diagram of the method of the present invention.
Fig. 5 is a schematic diagram of a conventional power supply electrical performance testing device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, fig. 1 and 2 disclose an automatic discharging device 100 after a power filter capacitor test is finished, which includes a filter capacitor discharge control module 10, a first discharge unit 1 to an nth discharge unit N, where N is an integer greater than or equal to 2; also shown in fig. 1 are the second discharge cell 2, the third discharge cell 3 through the nth discharge cell N; the first discharge unit 1 to the Nth discharge unit N are connected in parallel and then connected with the filter capacitor discharge control module 10; each discharge unit comprises an execution unit K and a discharge resistor R, the execution unit K and the discharge resistor R are connected in series and then respectively reserve a positive connection end and a negative connection end which are connected with a filter capacitor C of a power supply, for the first discharge unit 1, the execution unit K is a first execution unit K1, and the discharge resistor R is a first discharge resistor R1 and discharges the first filter capacitor C1; of course, for the second discharging unit 2, the actuating unit K is the second actuating unit K2, the discharging resistor R is the second discharging resistor R2, and the second filter capacitor C2 is discharged; for the third discharging unit 3, the actuating unit K is a third actuating unit K3, the discharging resistor R is a third discharging resistor R3, and the third filter capacitor C3 is discharged; for the Nth discharging unit N, the execution unit K is an Nth execution unit Kn, the discharging resistor R is an Nth discharging resistor Rn, and the Nth filtering capacitor Cn is discharged; when all the filter capacitors C need to be discharged, the filter capacitor discharge control module 10 sends out control information S, all the execution units K are closed, and the execution units K, the discharge resistors R and the filter capacitors C form a loop, so that the filter capacitors C are discharged; otherwise, the filter capacitor discharge control module 10 turns off the execution unit K.
Preferably, the execution unit K is a relay or a thyristor, and when the execution unit K is a relay, the control information S is 12V direct current; when the execution unit K is a controllable silicon, different control information S can be selected according to the type of the controllable silicon.
Preferably, the resistance value of the discharge resistor R is determined according to the capacitance of the filter capacitor C of different types of power supplies, the capacitance of the filter capacitor C of the power supply is in direct proportion to the resistance value of the discharge resistor R, and the larger the capacitance of the filter capacitor C of the power supply is, the larger the resistance value of the discharge resistor R is.
Preferably, N is an integer greater than or equal to 2, and may be any integer, but in practical applications, the value of N is preferably selected from 2 to 20.
The utility model discloses can make the use of single edition, as shown in fig. 1 and fig. 2, also can make and increase the function use on current ATE test machine, ATE test machine 200 as follows.
Referring to fig. 1, fig. 2 and fig. 3, the present invention further provides an ATE testing machine 200, which includes an electrical property detection module 20 and a control module 40, wherein the electrical property detection module 20 detects electrical property parameters of a power supply under the control of the control module 40, the present invention further includes a filter capacitor discharge control module 10, a first discharge unit 1 to an nth discharge unit N, wherein N is an integer greater than or equal to 2; also shown in fig. 1 are the second discharge cell 2, the third discharge cell 3 through the nth discharge cell N; the first discharge unit 1 to the Nth discharge unit N are connected in parallel and then connected with the filter capacitor discharge control module 10; each discharge unit comprises an execution unit K and a discharge resistor R, the execution unit K and the discharge resistor R are connected in series and then respectively reserve a positive connection end and a negative connection end which are connected with a filter capacitor C of a power supply, for the first discharge unit 1, the execution unit K is a first execution unit K1, and the discharge resistor R is a first discharge resistor R1 and discharges the first filter capacitor C1; of course, for the second discharging unit 2, the actuating unit K is the second actuating unit K2, the discharging resistor R is the second discharging resistor R2, and the second filter capacitor C2 is discharged; for the third discharging unit 3, the actuating unit K is a third actuating unit K3, the discharging resistor R is a third discharging resistor R3, and the third filter capacitor C3 is discharged; for the Nth discharging unit N, the execution unit K is an Nth execution unit Kn, the discharging resistor R is an Nth discharging resistor Rn, and the Nth filtering capacitor Cn is discharged; when all the filter capacitors C need to be discharged, the filter capacitor discharge control module 10 sends out control information S, all the execution units K are closed, and the execution units K, the discharge resistors R and the filter capacitors C form a loop, so that the filter capacitors C are discharged; otherwise, the filter capacitor discharge control module 10 turns off the execution unit K.
Preferably, the execution unit K is a relay or a thyristor, and when the execution unit K is a relay, the control information S is 12V direct current; when the execution unit K is a controllable silicon, different control information S can be selected according to the type of the controllable silicon.
Preferably, the resistance value of the discharge resistor R is determined according to the capacitance of the filter capacitor C of different types of power supplies, the capacitance of the filter capacitor C of the power supply is in direct proportion to the resistance value of the discharge resistor R, and the larger the capacitance of the filter capacitor C of the power supply is, the larger the resistance value of the discharge resistor R is.
Preferably, N is an integer greater than or equal to 2, and may be any integer, but in practical applications, the value of N is preferably selected from 2 to 20.
Preferably, the electrical property parameter includes, but is not limited to, current phase, voltage and/or current parameters, and the like.
Preferably, the utility model discloses still include final voltage detection module 30, final voltage detection module 30 judges whether the direct current output voltage of discharge result reaches the predetermined voltage according to the voltage of the direct current output end DC output of the power of examining; the final voltage detection module 30 means that the dc output voltage of the ATE tester 200 must be less than 2V when it is not supplying ac power to the power supply under test.
The utility model also provides an automatic discharging method after the power supply filter capacitance test is finished, which comprises the following steps,
s1, connecting an alternating current input end AC and a direct current output end DC of a detected power supply to corresponding ends of an ATE (automatic test equipment) tester respectively, and detecting electrical performance parameters of the power supply through an electrical performance detection module 20;
and S2, after the power supply is tested, sending control information S to all the execution units K by a filter capacitor discharge control module 10 of the ATE tester, closing all the execution units K, and enabling the execution units K, a discharge resistor R and a filter capacitor C to form a loop so as to discharge the filter capacitor C.
Preferably, after the step of S2, there is also a step of S3,
s3, after the discharging is finished, a final voltage detection module 30 of the ATE testing machine judges whether the direct current output voltage of the discharging result reaches a preset voltage or not according to the voltage output by the direct current output end DC of the detected power supply; the final voltage detection module 30 means that the dc output voltage of the ATE tester 200 must be less than 2V when it is not supplying ac power to the power supply under test.
The ATE tester provided by the utility model is improved on the basis of a power supply comprehensive test system (model YaDatest-ATE8600) produced by Guangda automation equipment limited company in Dongguan. Of course, other ATE testers may be used to make the device by adding the filter capacitor discharge control module and/or the final voltage detection module and its corresponding peripheral circuits.
All equivalent changes made by the contents of the specification and the drawings of the utility model are included in the scope of the claims of the utility model without departing from the idea of the utility model.
Claims (8)
1. The utility model provides an automatic discharging device (100) after power filter capacitance test, its characterized in that: the filter comprises a filter capacitor discharge control module (10), a first discharge unit (1) to an Nth discharge unit (N), wherein N is an integer greater than or equal to 2; the first discharge unit (1) to the Nth discharge unit (N) are connected in parallel and then are connected with the filter capacitor discharge control module (10); each discharging unit comprises an execution unit (K) and a discharging resistor (R), and a positive connecting end and a negative connecting end which are connected with a filter capacitor (C) of a power supply are reserved after the execution unit (K) and the discharging resistor (R) are connected in series; when the filter capacitor (C) needs to be discharged, the filter capacitor discharge control module (10) sends out control information (S), all the execution units (K) are closed, and the execution units (K), the discharge resistor (R) and the filter capacitor (C) form a loop, so that the filter capacitor (C) is discharged; otherwise, the filter capacitor discharge control module (10) switches off the execution unit (K).
2. The automatic discharging device after the power supply filter capacitor test is finished according to claim 1, characterized in that: the execution unit (K) is a relay or a thyristor.
3. The automatic discharging device after the power supply filter capacitor test is finished according to claim 1 or 2, characterized in that: the resistance value of the discharge resistor (R) is determined according to the capacitance of the filter capacitors (C) of different types of power supplies.
4. The automatic discharging device after the power supply filter capacitor test is finished according to claim 1 or 2, characterized in that: the N is an integer greater than or equal to 2, and is selected from 2-20.
5. An ATE tester (200) comprising an electrical performance detection module (20) and a control module (40), wherein the electrical performance detection module (20) detects an electrical performance parameter of a power supply under control of the control module (40), characterized by: the filter circuit also comprises a filter capacitor discharge control module (10), a first discharge unit (1) to an Nth discharge unit (N), wherein N is an integer greater than or equal to 2; the first discharge unit (1) to the Nth discharge unit (N) are connected in parallel and then are connected with the filter capacitor discharge control module (10); each discharging unit comprises an execution unit (K) and a discharging resistor (R), and a positive connecting end and a negative connecting end which are connected with a filter capacitor (C) of a power supply are reserved after the execution unit (K) and the discharging resistor (R) are connected in series; when the filter capacitor (C) needs to be discharged, the filter capacitor discharge control module (10) sends out control information (S), all the execution units (K) are closed, and the execution units (K), the discharge resistor (R) and the filter capacitor (C) form a loop, so that the filter capacitor (C) is discharged; otherwise, the filter capacitor discharge control module (10) switches off the execution unit (K).
6. The ATE tester of claim 5, wherein: the execution unit (K) is a relay or a thyristor.
7. The ATE tester of claim 5 or 6, wherein: the device also comprises a final voltage detection module (30), wherein the final voltage detection module (30) judges whether the direct current output voltage of the discharge result reaches a preset voltage according to the voltage output by the direct current output end DC of the detected power supply.
8. The ATE tester of claim 5 or 6, wherein: the N is an integer greater than or equal to 2, and is selected from 2-20.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020178732.0U CN212364535U (en) | 2020-02-18 | 2020-02-18 | Automatic discharging device and ATE (automatic test equipment) tester after power supply filter capacitor test is finished |
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| CN202020178732.0U CN212364535U (en) | 2020-02-18 | 2020-02-18 | Automatic discharging device and ATE (automatic test equipment) tester after power supply filter capacitor test is finished |
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| CN212364535U true CN212364535U (en) | 2021-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030637A (en) * | 2021-02-26 | 2021-06-25 | 广东电网有限责任公司 | Multi-core cable test circuit and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030637A (en) * | 2021-02-26 | 2021-06-25 | 广东电网有限责任公司 | Multi-core cable test circuit and device |
| CN113030637B (en) * | 2021-02-26 | 2022-05-17 | 广东电网有限责任公司 | Multi-core cable test circuit and device |
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