CN217521237U

CN217521237U - Aging test circuit and aging test frame

Info

Publication number: CN217521237U
Application number: CN202220722285.XU
Authority: CN
Inventors: 曾宪来; 李照平; 郑浩奇; 龙家杰
Original assignee: Zhongshan Zhilian Household Appliances Co ltd
Current assignee: Zhongshan Zhilian Household Appliances Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-09-30
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses an aging testing circuit and aging testing frame, include: the testing module is provided with a first wiring terminal, and the first wiring terminal is connected with a first load module; the voltage conversion module comprises a first electric control switch and a second electric control switch; the first power supply, the first electronic control switch and the testing module form a first power supply loop, the second power supply, the second electronic control switch and the testing module form a second power supply loop, the control module controls the on-off of the first power supply loop and the second power supply loop by controlling the on-off of the first electronic control switch and the second electronic control switch, and the control module controls the on-off of the second electronic control switch and controls the load access size of the first load module. The utility model discloses the access load in the circuit can be along with the switching of voltage and automatic change, can improve aging testing efficiency.

Description

Aging test circuit and aging test frame

Technical Field

The utility model relates to an aging testing technical field especially relates to an aging testing circuit and aging testing frame.

Background

At present, when some devices are subjected to aging test, because different devices need different test voltages, aging test circuits with different input voltages are required to perform aging test on the devices, so that the aging test of the devices is troublesome, and then some aging test circuits capable of adjusting the input voltages are generated. However, in some PCBA tests, when the input voltage changes, the power of the load connected to the circuit also changes, and the power of the load connected to the circuit in the prior art cannot automatically change along with the change of the input voltage, so that the aging test process is inconvenient.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving one of the technical problems in the related art at least to a certain extent. Therefore, the utility model provides an aging testing circuit can solve the unable problem that changes automatically along with input voltage's change of power that inserts the load in the circuit.

In one aspect, an embodiment of the present invention provides an aging test circuit, include:

the testing module is provided with a first wiring terminal, the first wiring terminal is connected with a first load module, the first load module comprises a first load, a second load and a load switch, the second load is connected to two ends of the first load in parallel, the load switch is connected with the second load in series and the first load in parallel, and the first wiring terminal is used for being connected with a device to be tested so as to enable the device to be tested to be connected with the first load module;

the voltage conversion module comprises a first electric control switch and a second electric control switch, one end of the first electric control switch is used for being connected with a first power supply, the other end of the first electric control switch is connected with the test module so that the first power supply, the first electric control switch, the test module, the first wiring terminal and the first load module form at least part of a first power supply loop, one end of the second electric control switch is used for being connected with a second power supply, and the other end of the second electric control switch is connected with the test module so that the second power supply, the second electric control switch, the test module, the first wiring terminal and the first load module form at least part of a second power supply loop;

when the voltage conversion module is in the first working state, the first electronic control switch is closed and the second electronic control switch is opened so that the first power supply loop is conducted and the second power supply loop is opened, and when the voltage conversion module is in the second working state, the second electronic control switch is closed and the first electronic control switch is opened so that the second power supply loop is conducted and the first power supply loop is opened;

the control module is used for controlling the on-off of the first electric control switch and the second electric control switch so as to enable the voltage conversion module to be switched between a first working state and a second working state, and the control module controls the second electric control switch and the load switch to be synchronously switched on and off.

According to the utility model discloses the aging testing circuit that provides has following beneficial effect at least: the control module switches the working state of the voltage conversion module by controlling the on-off of the first electric control switch and the second electric control switch, the input voltages of the aging test circuit are different under different working states of the voltage conversion module which is not used, and the control module controls the on-off of the second electric control switch and the load switch simultaneously when controlling the switching of the working state of the voltage conversion module, when the second electric control switch is closed, the load switch is closed at the same time, the second load in the first load module is connected into the circuit, when the second electric control switch is switched off, the load switch is switched off simultaneously, the second load in the first load module is not connected with the circuit, and the second electric control switch and the load switch are switched on and off simultaneously, so that the load connected with the first load module can be automatically changed along with the switching of the voltage, the load is not required to be adjusted manually, and the aging test efficiency is higher.

According to the utility model discloses a some embodiments, control module includes first control switch, first driving piece and second driving piece, first driving piece is used for ordering about first electric control switch break-make, the second driving piece is used for ordering about second electric control switch break-make, first control switch includes input, first output and second output, first control switch's input is used for being connected with drive power supply, first control switch's first output with first driving piece is connected in order to constitute at least partial first drive branch road, first control switch's second output with the second driving piece is connected in order to constitute at least partial second drive branch road, first control switch is controlling under controlling first drive branch road or the break-make of second drive branch road.

According to some embodiments of the utility model, control module still includes timing module and switch module, the first input of switch with the first output of controlling the switch is connected, switch module's second input with the second output of first controlling the switch is connected, switch module's first output with first driving piece is connected in order to constitute at least partial first drive branch road, switch module's second output with the second driving piece is connected in order to constitute at least partial second drive branch road, timing module is used for timing control switch module's first output with the break-make of first driving piece the second output of switch module with the break-make of second driving piece.

According to some embodiments of the utility model, the switch module includes electromagnetic relay, electromagnetic relay includes first coil, first contact switch and second contact switch, the input of first contact switch with first output of controlling the switch is connected, the output of first contact switch with first driving piece is connected in order to constitute first drive branch road, the input of second contact switch with first second output of controlling the switch is connected, the output of second contact switch with the second driving piece is connected in order to constitute second drive branch road, first coil with timing module connects, timing module is used for controlling whether circular telegram of first coil, when first coil circular telegram, first contact switch with second contact switch is closed.

According to some embodiments of the utility model, the timing module includes time relay and second control switch, time relay includes third contact switch and second coil, the input of third contact switch with drive power supply connects, the output of third contact switch with first coil is connected in order to constitute third power supply circuit, the second control switch the input with drive power supply connects, the second control switch the output with the second coil is connected in order to constitute fourth power supply circuit, the second control switch is controlling under controlling the third power supply circuit with the break-make of fourth power supply circuit.

According to some embodiments of the utility model, control module still includes the third driving piece, the third driving piece is used for control load switch's break-make, the input of third driving piece with the second output of first control switch is connected, the output of third driving piece with drive power supply connects in order to constitute third drive branch road.

According to some embodiments of the utility model, the test module still is connected with second binding post, second binding post with first binding post connects in parallel each other, second binding post with first binding post model is different, second binding post is connected with second load module, second load module with the load that first load module includes is different, second binding post is used for being connected so that the device under test with second load module connects with the device under test.

According to the utility model discloses a some embodiments, test module includes a plurality of power seats, and is a plurality of the power seat with first power supply circuit or second power supply circuit connects, and is a plurality of the power seat is parallelly connected a plurality of each other the power seat is used for connecting the device under test.

According to the utility model discloses a some embodiments, test module includes the voltage regulator, the voltage regulator is used for adjusting test module's input voltage, the voltage regulator with first power supply circuit or second power supply circuit connects.

On the other hand, the embodiment of the utility model provides a still provide an aging testing jig, the aging testing jig includes the arbitrary embodiment of above-mentioned first aspect aging testing circuit.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a block diagram of a burn-in test circuit according to an embodiment of the present invention;

fig. 2 is a load circuit structure diagram of an aging test circuit according to an embodiment of the present invention;

fig. 3 is a structural diagram of a control circuit of the aging test circuit according to an embodiment of the present invention.

Reference numerals: the testing module 100, the first load module 110, the first connection terminal 120, the power socket 120, the standby power socket 130, the power socket switch 140, the power socket switch driving member 141, the dial indicator 150, the voltage regulator 160, the transformer 170, the voltage conversion module 200, the first electronic control switch 210, the first driving member 211, the second electronic control switch 220, the second driving member 221, the control module 300, the first control switch 310, the first coil 320, the second coil 330, the first power supply 400, the second power supply 500, the control member 600, the first load R1, the second load R2, the load switch J1, the third driving member J11, the FUSE, the second control switch K1, the total switch K2, the first contact switch K3, the second contact switch K4, the third contact switch K5, the first indicator light L1, and the second indicator light L2.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, the utility model provides an aging testing circuit includes, test module 100, voltage conversion module 200, control module 300 and first load module 110, through control module 300 to voltage conversion module 200's control, can switch test module 100's input voltage, still the size that first load module 110 inserted the load of automatic control when control module 300 switched voltage at control voltage conversion module 200.

Specifically, referring to fig. 1 and 2, the test module 100 is provided with a first connection terminal 120, the first connection terminal 120 is connected to a first load module 110, the first load module 110 includes a first load R1, a second load R2 and a load switch J1, the second load R2 is connected in parallel to two ends of the first load R1, the load switch J1 is connected in series with the second load R2 and in parallel with the first load R1, and the first connection terminal 120 is used for being connected to a device under test so as to connect the device under test with the first load module 110. The voltage conversion module 200 includes a first electronic control switch 210 and a second electronic control switch 220, one end of the first electronic control switch 210 is used for being connected with the first power supply 400, the other end of the first electronic control switch 210 is connected with the test module 100 so that the first power supply 400, the first electronic control switch 210, the test module 100, the first connection terminal 120 and the first load module 110 form at least part of a first power supply loop, one end of the second electronic control switch 220 is used for being connected with the second power supply 500, and the other end of the second electronic control switch 220 is connected with the test module 100 so that the second power supply 500, the second electronic control switch 220, the test module 100, the first connection terminal 120 and the first load module 110 form at least part of a second power supply loop. The control module 300 is configured to control on/off of the first electronically controlled switch 210 and the second electronically controlled switch 220 so as to switch the voltage conversion module 200 between the first working state and the second working state, and the control module 300 controls the second electronically controlled switch 220 and the load switch J1 to be synchronously turned on/off.

When the voltage conversion module 200 is in the first working state, the first electronically controlled switch 210 is closed and the second electronically controlled switch 220 is opened so that the first power supply loop is turned on and the second power supply loop is turned off, and when the voltage conversion module 200 is in the second working state, the second electronically controlled switch 220 is closed and the first electronically controlled switch 210 is opened so that the second power supply loop is turned on and the first power supply loop is turned off;

it should be noted that, in some embodiments of the present invention, the output voltage of the first power supply 400 is 220V, and the output voltage of the second power supply 500 is 110V

It should be noted that, in some embodiments of the present invention, the first load R1, the second load R2 and the load switch J1 in the first load module 110 may be regarded as one load module, and the first load module 110 may include a plurality of load modules, which are connected in parallel and connected to the connection terminal. The load switches J1 in each load module are connected in series.

It should be noted that, when the burn-in test circuit is powered by the first power supply 400, i.e., 220V voltage, the load switch J1 in the first load module 110 is turned off, and only the first load R1 is connected to the circuit at this time, and when the burn-in test circuit is powered by the first power supply 400, i.e., 220V voltage, the load switch J1 in the first load module 110 is turned off, and only the first load R1 is connected to the circuit at this time. When the burn-in test circuit is powered by the second power supply 500, i.e., 110V voltage, the load of the first load module 110 needs to be decreased to enable the device under test connected in series with the first load module 110 to be divided into enough voltages, the load switch J1 in the first load module 110 is closed under the control of the control module 300, and at this time, both the first load R1 and the second load R2 are connected into the circuit, because the first load R1 and the second load R2 are connected in parallel, the load connected into the first load module 110 is decreased, and the load divided voltage is decreased accordingly, so that the voltage divided by the device under test connected with the first load module 110 is appropriate.

It should be noted that, in some embodiments of the present invention, the first load R1 and the second load R2 are both resistors.

It should be noted that, in some embodiments of the utility model, first power supply loop is connected with first pilot lamp L1, when first power supply loop switches on, first pilot lamp L1 lights, second power supply loop is connected with second pilot lamp L2, when second power supply loop switches on, second pilot lamp L2 lights, first pilot lamp L1 and second pilot lamp L2's setting can make test personnel can be audio-visual to see that it is first power supply loop that current switches on or the second power supply loop switches on, and then avoid connecing wrong device under test.

It should be noted that the control module 300 controls the on/off of the first electronic control switch 210 and the second electronic control switch 220 to switch the voltage conversion module 200 between the first working state and the second working state, and the switching is performed by manually controlling and switching the working states of the electronic control switches according to different testing requirements of the device to be tested.

Specifically, when the device to be tested needs a voltage of 220V for the aging test, the control module 300 controls the first electrical control switch 210 to be closed, the first power supply loop is turned on, and at this time, the input voltage of the aging test circuit is 220V. When the device to be tested needs 110V voltage to perform aging test, the control module 300 is controlled to control the second electronic control switch 220 to be closed, the second power supply loop is conducted, the input voltage of the aging test circuit is 110V, meanwhile, when the control module 300 controls the second electronic control switch 220 to be closed, the load switch J1 in the first load module 110 is closed, after the load switch J1 is closed, the second load R2 access circuit is connected with the first load R1 in parallel to reduce the resistance value of the whole load module, further, the voltage division of the load module is reduced, and therefore the device to be tested can divide enough voltage for testing under the voltage of 110V. This scheme can also be according to the resistance that voltage automatically regulated load module inserted when switching input voltage, need not the manual work go to adjust the resistance that load module inserted for aging testing is more convenient, and efficiency of software testing is higher.

Referring to fig. 2 and 3, in some embodiments of the present invention, the control module 300 includes a first control switch 310, a first driving member 211 and a second driving member 221, the first driving member 211 is used for driving the first electronic control switch 210 to be turned on and off, the second driving member 221 is used for driving the second electronic control switch 220 to be turned on and off, the first control switch 310 includes an input end, a first output end and a second output end, the input end of the first control switch 310 is used for being connected with a driving power supply, the first output end of the first control switch 310 is connected with the first driving member 211 to form at least a part of a first driving branch, the second output end of the first control switch 310 is connected with the second driving member 221 to form at least a part of a second driving branch, and the first control switch 310 controls the turning on and off of the first driving branch or the second driving branch under control.

It should be noted that, when the first electronic control switch 210 needs to be closed, the first control switch 310 is adjusted, so that the first output end of the first control switch 310 is connected to the first driving element 211 to form a first driving branch, at this time, the first driving element 211 is powered on, and the first driving element 211 is powered on to drive the first electronic control switch 210 to be closed. When the second electronic control switch 220 needs to be closed, the first control switch 310 is adjusted, so that the second output end of the first control switch 310 is connected with the first driving element 211 to form a second driving branch, at this time, the second driving element 221 is powered on, and the second electronic control switch 220 is driven to be closed after the second driving element 221 is powered on.

It should be noted that the first control switch 310 may be a single-pole double-throw switch, and two fixed ends of the single-pole double-throw switch are respectively used as the first output end and the second output end.

It should be noted that, a contactor may be used to implement control of a circuit, a coil of the contactor is used as the first driving element 211 or the second driving element 221 to access the control circuit, a contact of the contactor is used as the first electronic control switch 210 or the second electronic control switch 220 to access the power supply circuit, and when the first control circuit or the second control branch is powered on, the contact of the contactor is pulled in under the action of the coil to turn on the first control circuit or the second control circuit. The contactor has large control capacity and a low-voltage release protection function, and can make a circuit more stable when the circuit is controlled.

It should be noted that, in some embodiments of the present invention, the control module further includes a main switch K2, and the main switch K2 is used for controlling the on/off of the driving power supply and the first control switch 310.

It can be understood that, two control branches are used to control the circuit, and only the first control switch 310 needs to be adjusted when switching is needed, so that the switching of the input voltage can be completed simply and conveniently.

Referring to fig. 3, in some embodiments of the present invention, the control module 300 further includes a timing module and a switch assembly, a first input end of the switch is connected to a first output end of the first control switch 310, a second input end of the switch assembly is connected to a second output end of the first control switch 310, a first output end of the switch assembly is connected to the first driving member 211 to form at least a part of the first driving branch, a second output end of the switch assembly is connected to the second driving member 221 to form at least a part of the second driving branch, the timing module is used for controlling on/off of the first output end of the switch assembly and the first driving member 211, and the second output end of the switch assembly and the second driving member 221.

It should be noted that, in some embodiments of the present invention, the first output end of the switch assembly and the first driving member 211, and the second output end of the switch assembly and the second driving member 221 are turned on and off simultaneously under the control of the timing module, that is, when the first output end of the switch assembly and the first driving member 211 are turned off, the second output end of the switch assembly and the second driving member 221 are also turned off simultaneously. When the first output terminal of the switch module is conducted with the first driving member 211, the second output terminal of the switch module is conducted with the second driving member 221.

It can be understood that the timing switch can perform aging test on the device to be tested at regular time by controlling the on-off of the first output end of the switch assembly and the on-off of the second output end of the switch assembly and the second driving member 221 at regular time, and the aging test can be more convenient without the test personnel staring at the test time at any time during the regular test.

Referring to fig. 3, in some embodiments of the present invention, the switch assembly includes an electromagnetic relay, the electromagnetic relay includes a first coil 320, a first contact switch K3 and a second contact switch K4, an input end of the first contact switch K3 is connected with a first output end of a first control switch 310, an output end of the first contact switch K3 is connected with a first driving member 211 to form a first driving branch, an input end of the second contact switch K4 is connected with a second output end of the first control switch 310, an output end of the second contact switch K4 is connected with a second driving member 221 to form a second driving branch, the first coil 320 is connected with a timing module, the timing module is used for controlling whether the first coil 320 is powered on, when the first coil 320 is powered on, the first contact switch K3 and the second contact switch K4 are closed.

It should be noted that, after the coil in the electromagnetic relay is energized, a magnetic field is generated, and under the action of the magnetic field, the output ends of the first contact switch K3 and the second contact switch K4 are respectively connected to the first driving element 211 and the second driving element 221.

It should be noted that, the voltage resistance and the temperature resistance of the electromagnetic relay are both good, and the circuit can be more stable by adopting the electromagnetic relay to control the circuit.

Referring to fig. 3, in some embodiments of the present invention, the timing module includes a time relay and a second control switch K1, the time relay includes a third contact switch K5 and a second coil 330, an input end of the third contact switch K5 is connected to the driving power supply, an output end of the third contact switch K5 is connected to the first coil 320 to form a third power supply loop, an input end of the second control switch K1 is connected to the driving power supply, an output end of the second control switch K1 is connected to the second coil 330 to form a fourth power supply loop, and the second control switch K1 controls on/off of the third power supply loop and the fourth power supply loop under control.

It should be noted that the third contact switch K5 is normally closed, and the second control switch K1 is used to control whether the time relay is connected to the circuit, so as to avoid immediately powering on the time relay after the control module 300 is powered on, which may cause a risk of damaging the device to be tested when the time relay is powered on and the test work is not ready yet.

It should be noted that the time relay itself has a timing control feature, when the second coil 330 is energized, the third contact switch K5 may be turned on in a delayed manner to implement a timing function, and when the second coil 330 is de-energized, the third contact switch K5 may be turned off in a delayed manner to implement a timing control function.

Referring to fig. 3, in some embodiments of the present invention, the control module 300 further includes a third driving member J11, the third driving member J11 is used for controlling on/off of the load switch J1, an input end of the third driving member J11 is connected to the second output end of the first control switch 310, and an output end of the third driving member J11 is connected to the driving power supply to form a third driving branch.

It should be noted that the input end of the third driving element J11 is connected to the second output end of the first control switch 310, so that when the second output end of the first control switch 310 is connected to the second driving element 221, the third driving element J11 is also connected to the third driving branch, and the third driving element J11 is powered on to drive the load switch J1 to close, so as to control the load module.

It should be noted that, in some embodiments of the present invention, an intermediate relay may be adopted to control the load module, a contact switch of the intermediate relay is used as the load switch J1, a coil of the intermediate relay is used as the third driving member J11, and when the coil television is used, the contact switch is closed to complete the control of the load module.

In some embodiments of the present invention, the test module 100 is further connected to a second connection terminal, which only exemplarily shows the first connection terminal 120, the second connection terminal is connected to the first connection terminal 120 in parallel, the second connection terminal is different from the first connection terminal 120 in model, the second connection terminal is connected to a second load module, the second load module is different from a load included in the first load module 110, and the second connection terminal is used for being connected to the device under test so as to connect the device under test to the second load module.

It should be noted that the second connection terminal is different from the first connection terminal 120 in type, and the second load module connected to the second connection terminal is also different from the first load module 110, and the second connection terminal is used for connecting a UV lamp, that is, the UV lamp is in the second load module. The second connection terminal to be noted may be connected with a resistor.

It should be noted that the test module 100 may further connect a third connection terminal, a fourth connection terminal, and the like, and each different connection terminal is connected to a different load module.

It can be understood that the plurality of different connection terminals are connected to different load modules, so that the burn-in test circuit tests different devices to be tested, for example, different load modules are correspondingly connected to different PCBA to perform burn-in tests on PCBA of various models.

Referring to fig. 2, in some embodiments of the present invention, the testing module 100 includes a plurality of power sockets 120, only one of which is shown by way of example, the plurality of power sockets 120 are connected to the first power supply circuit or the second power supply circuit, and the plurality of power sockets 120 are connected in parallel to each other to connect the device under test.

It can be understood that the arrangement of the plurality of power sockets 120 may be a circuit that connects to more devices under test, so as to improve the efficiency of the burn-in test.

It should be noted that, in some embodiments of the present invention, each power socket 120 corresponds to a power socket switch 140 for controlling whether the power socket 120 is powered on. The control module 300 includes a plurality of power socket switch drivers 141, the power socket switch drivers 141 are connected to a driving power source, and the power socket switch drivers 141 are used for controlling on/off of the power socket switches 140.

It should be noted that, in some embodiments of the present invention, the test module 100 is further connected to a standby power socket 130, and the standby power socket 130 can be used when the power socket 120 is damaged.

It should be noted that the driving power source in any of the above embodiments may be the first power source 400 or the second power source 500 or an additional power source.

Referring to fig. 2, in some embodiments of the present invention, the test module 100 includes a voltage regulator 160, the voltage regulator 160 is used for regulating an input voltage of the test module 100, and the voltage regulator 160 is connected to the first power supply loop or the second power supply loop.

It can be understood that the voltage regulator 160 can finely adjust the output voltage of the first power supply 400 or the second power supply 500, so that the input voltage of the test module 100 can more accurately meet the voltage requirement of the device under test, and further, the result of the aging test is more accurate.

Referring to fig. 2, in some embodiments of the present invention, the testing module 100 further includes a transformer 170, the transformer 170 is disposed next to the voltage regulator 160, the transformer 170 is further connected to a voltmeter for observing voltage, the transformer 170 can change high voltage into low voltage, large current into small current for measuring input voltage or current, and also has a protection effect on the whole aging testing circuit.

Referring to fig. 2, in some embodiments of the present invention, the indicator 150 is connected in parallel to two ends of the first connection terminal 120, and the indicator 150 may be a voltmeter for measuring the voltage at two ends of the device under test.

Referring to fig. 3, in some embodiments of the present invention, the control module 300 further includes a fan control element 600, a fan is connected to the first power supply circuit or the second power supply circuit, the fan is not shown in fig. 2, and the fan control element 600 is used for controlling the on/off of the fan.

Referring to fig. 2, in some embodiments of the present invention, the first power supply loop and the second power supply loop are connected in series with a FUSE for the protection circuit.

The embodiment of the utility model provides a still provide an aging testing frame, aging testing frame includes the aging testing circuit of any embodiment of the aforesaid. It can be understood that the aging test frame for the aging test provided by the application can make the aging test of the device to be tested more convenient and the test efficiency higher.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and the scope of the invention is not limited thereto. Any modification, equivalent replacement and improvement made by those skilled in the art without departing from the scope and spirit of the present invention should be within the scope of the claims of the present invention.

Claims

1. A burn-in test circuit, comprising:

2. The burn-in test circuit of claim 1, wherein the control module comprises a first operating switch, a first driver, and a second driver, the first driving piece is used for driving the first electric control switch to be switched on and switched off, the second driving piece is used for driving the second electric control switch to be switched on and switched off, the first control switch comprises an input end, a first output end and a second output end, the input end of the first control switch is used for being connected with a driving power supply, the first output end of the first control switch is connected with the first driving piece to form at least part of a first driving branch, the second output end of the first control switch is connected with the second driving piece to form at least part of a second driving branch circuit, the first control switch controls the on-off of the first driving branch or the second driving branch under the control of the first control switch.

3. The burn-in test circuit of claim 2, wherein the control module further comprises a timing module and a switch assembly, the first input terminal of the switch is connected to the first output terminal of the first control switch, the second input terminal of the switch assembly is connected to the second output terminal of the first control switch, the first output terminal of the switch assembly is connected to the first driving member to form at least a part of the first driving branch, the second output terminal of the switch assembly is connected to the second driving member to form at least a part of the second driving branch, and the timing module is configured to control on and off of the first output terminal of the switch assembly and the first driving member and on and off of the second output terminal of the switch assembly and the second driving member in a timing manner.

4. The burn-in test circuit of claim 3, wherein the switch assembly comprises an electromagnetic relay, the electromagnetic relay comprises a first coil, a first contact switch and a second contact switch, wherein the input end of the first contact switch is connected with the first output end of the first control switch, the output end of the first contact switch is connected with the first driving piece to form a first driving branch, the input end of the second contact switch is connected with the second output end of the first control switch, the output end of the second contact switch is connected with the second driving piece to form a second driving branch, the first coil is connected with the timing module, the timing module is used for controlling whether the first coil is electrified or not, when the first coil is energized, the first contact switch and the second contact switch are closed.

5. The burn-in test circuit of claim 4, wherein the timing module comprises a time relay and a second control switch, the time relay comprises a third contact switch and a second coil, an input end of the third contact switch is connected with the driving power supply, an output end of the third contact switch is connected with the first coil to form a third power supply loop, an input end of the second control switch is connected with the driving power supply, an output end of the second control switch is connected with the second coil to form a fourth power supply loop, and the second control switch controls the third power supply loop and the fourth power supply loop to be switched on and off under the control of the second control switch.

6. The burn-in test circuit of claim 2, wherein the control module further comprises a third driving element, the third driving element is configured to control on/off of the load switch, an input end of the third driving element is connected to the second output end of the first control switch, and an output end of the third driving element is connected to the driving power supply to form a third driving branch.

7. The burn-in test circuit of claim 1, wherein a second connection terminal is further connected to the test module, the second connection terminal is connected in parallel with the first connection terminal, the second connection terminal is of a different type from the first connection terminal, the second connection terminal is connected to a second load module, the second load module comprises a different load from the first load module, and the second connection terminal is used for being connected to a device under test so as to connect the device under test to the second load module.

8. The burn-in test circuit of claim 1, wherein the test module comprises a plurality of power sockets, the plurality of power sockets are connected to the first power supply circuit or the second power supply circuit, and the plurality of power sockets are connected in parallel to each other for connecting a device under test.

9. The burn-in test circuit of claim 1, wherein the test module includes a voltage regulator for regulating an input voltage of the test module, the voltage regulator being connected to the first power supply loop or the second power supply loop.

10. A burn-in test rack comprising the burn-in test circuit of any one of claims 1-9.