TWI445986B - Test system - Google Patents

Description

Test system

The invention relates to the technical field of a test system, in particular to a test system for testing a solar cell by one of a solar light simulator and a high voltage tester.

After the electronic device is assembled or fabricated, it is generally necessary to test some of the functions to detect whether the electronic device (which may be referred to as the device under test) meets the prescribed standard, thereby ensuring that the electronic device can be used normally.

For example, solar cells need to be tested separately for simulation and high voltage. The simulation test is used to detect the photoelectric conversion efficiency of solar cells. The high voltage test is used to detect the withstand voltage and dielectric strength of solar cells. Various tests such as analog and high voltage are required to be combined with a dedicated measuring device. The solar tester is required for the simulation test, and the high voltage tester is required for the high voltage test.

However, disassembly or removal of solar cells between the solar simulator and the high-voltage tester, or even more dedicated measuring instruments, will increase the time required for testing, which in turn affects test efficiency.

In view of the above, the object of the present invention is to provide a test system that selects one of a plurality of measuring instruments through a switching module to test a device to be tested, and overcomes disassembly, assembly, removal, and removal of the device to be tested. Inconvenience between multiple measuring instruments to solve the problem of inefficient testing.

For the above purposes, the technical means adopted by the present invention include: a device to be tested; a plurality of measuring instruments for testing the device to be tested; a control device for outputting a control signal; and a switching module, The switch module is coupled to the device under test, the plurality of measuring instruments and the control device, and is configured to determine, according to the control signal, one of the plurality of measuring instruments to be tested The device performs testing; wherein the control device detects the state of the plurality of relays to confirm that the switching module can operate normally before controlling the switching module to perform switching of the plurality of measuring instruments.

In a specific implementation, the device to be tested is a solar cell; the plurality of measuring instruments comprise a solar simulator and a high voltage tester; the plurality of relays are selected from one of a vacuum relay and a high voltage relay; A measuring point is respectively disposed on the relay, and the control device detects a signal state of the plurality of measuring points to confirm that the plurality of relays can normally operate; respectively, a plurality of coils are disposed on the plurality of relays, and the control device detects the plurality of The conduction state of the coil is respectively confirmed that the plurality of relays can operate normally; the control device further includes a warning module, and when the control device confirms that the plurality of relays are not working normally, the warning module outputs an alert signal.

In summary, the present invention controls the switching module to select one of the solar simulator and the high voltage tester to test the solar cell through the control device, and detect the solar cell through the control device. The state of the relay confirms whether the switching module can work normally, thereby making the testing of the solar cell more stable and time-saving, thereby improving the testing efficiency.

In order to fully understand the above technical means and the performance of the present invention, and to implement the present invention, please refer to the description of the embodiments and the following description:

FIG. 1 is a block diagram showing a first embodiment of the present invention, and the test system of the present invention is described with reference to FIG. 2 to FIG. 8 , including: a device under test 11 , a plurality of measuring instruments, and a control device 17 . And a switching module 14.

The device under test 11 can be a solar cell. The solar cell is an optoelectronic semiconductor chip that directly generates electricity by using sunlight. The voltage and current can be output as soon as the light is received. The most important parameters for solar cells are photoelectric conversion efficiency and insulation withstand voltage. Photoelectric conversion efficiency refers to the efficiency of solar cells to convert sunlight into electrical energy. Insulation withstand voltage refers to the maximum voltage that solar cells can withstand.

The plurality of measuring instruments may include a solar simulator 12 and a high voltage tester 13, but are not limited thereto, and the embodiment is represented only by the solar simulator 12 and the high voltage tester 13. The solar simulator 12 can simulate sunlight and irradiate the device under test 11 with standard intensity of sunlight to test the photoelectric conversion efficiency of the solar cell. The high voltage tester 13 can supply a voltage several times higher than the rated voltage and apply it to the device under test 11, thereby testing the insulation withstand voltage capability of the solar cell.

The control device 17 is configured to output a control signal. The control device 17 can be a programmable logic controller. The programmable logic controller can be disposed on a terminal block. The control device 17 can also include an alert module 171.

The switching module 14 is coupled to the device under test 11, the solar simulator 12, the high voltage tester 13 and the control device 17 for determining one of the plurality of measuring instruments according to the control signal. The device under test 11 is tested. The control device 17 detects the switching module 14 to confirm that the switching module 14 can operate normally before controlling the switching module 14 to perform switching of the plurality of measuring instruments. The switching module 14 includes a plurality of relays, and the control device 17 detects the states of the plurality of relays to confirm that the switching module 14 can operate normally. The plurality of relays may be selected from one of a vacuum relay and a high voltage relay.

As shown in FIG. 2, the switching module 14 can include a first relay 141, a second relay 142, a third relay 143, a fourth relay 144, and a fifth relay 145. The relay 141 and the second relay 142 are used as a switch, and the third relay 143, the fourth relay 144 and the fifth relay 145 are used for detecting by the control device 17. More specifically, a third measuring point 151, a second measuring point 152 and a third measuring point 153 can be respectively disposed on the third relay 143, the fourth relay 144 and the fifth relay 145. The control device 17 detects the signal states of the plurality of measurement points to confirm that the plurality of relays can operate normally (as shown in FIG. 2).

The coupling relationship between the relays of the switching module 14 and the devices is as follows: the common contact C, the normally closed contact B and the normally open contact A of the first relay 141 are respectively coupled to the device under test 11 a positive pole, a positive pole of the solar simulator 12, and a positive pole of the high voltage tester 13; a common contact C, a normally closed contact B, and a normally open contact A of the second relay 142 are respectively coupled to the device under test 11 a negative electrode, a negative electrode of the solar simulator 12, and a positive electrode of the high voltage tester 13; wherein a casing of the device under test 11 is coupled to a negative electrode of the high voltage tester 13; different contacts of the third relay 143 are respectively coupled a common contact C of the first relay 141, a positive pole of the device under test 11, a normally closed contact B of the first relay 141, and a positive pole of the solar simulator 12; different contacts of the fourth relay 144 are respectively a common contact C coupled to the second relay 142, a negative pole of the device under test 11, a normally closed contact B of the second relay 142, and a negative pole of the solar simulator 12; different connections of the fifth relay 145 The points are respectively coupled to the normally open contact A of the first relay 141 and the second relay 142 The contact point A and the positive pole of the high voltage tester 13 are connected; in addition, each of the relays of the switching module 14 is coupled to the control device 17 to accept control or detection of the control device 17.

In this manner, the control device 17 detects the first relay 141 and the second relay 142 used as the switch in the switching module 14 before controlling the switching module 14 to perform switching of the plurality of measuring instruments. It is confirmed that the first relay 141 and the second relay 142 can operate normally, and the first relay 141 and the second relay 142 are used to select one of the solar simulator 12 or the high voltage tester 13 to be tested. The device 11 performs a simulation test or a high voltage test.

The steps of the simulation test are as follows: as shown in FIG. 3, the control device 17 controls the first relay 141 and the second relay 142, respectively, to short-circuit the normally closed contact B of the first relay 141, and the normally open contact A is open. The normally closed contact B of the second relay 142 is short-circuited, and the normally open contact A is opened to turn on the line between the device under test 11 and the solar simulator 12, and the third relay 143 is respectively turned on. The fourth relay 144 is not turned on and the fifth relay 145 is turned on to confirm whether the first relay 141 is normally operated according to the signal states of the first measuring point 151 and the third measuring point 153; When the measuring point 151 has a signal and the third measuring point 153 has no signal, the control device 17 confirms that the first relay 141 can operate normally; in addition, when the first measuring point 151 has a signal, the When the third measuring point 153 has a signal, the control device 17 confirms that the first relay 141 fails to operate normally; when the first measuring point 151 has no signal and the third measuring point 153 has no signal, The control device 17 confirms that the first relay 141 is not functioning properly; When the first measuring point 151 has no signal and the third measuring point 153 has a signal, the control device 17 confirms that the first relay 141 fails to operate normally; once the control device 17 confirms that the first relay 141 fails The normal operation causes the warning module 171 to output the warning signal; as shown in FIG. 4, the control device 17 then controls the first relay 141 and the second relay 142 to respectively make the normally closed contact of the first relay 141. B short circuit, normally open contact A open circuit, the normally closed contact B of the second relay 142 is shorted, and the normally open contact A is open to turn on the line between the device under test 11 and the solar simulator 12, and respectively The third relay 143 is not turned on, the fourth relay 144 is turned on, and the fifth relay 145 is turned on to confirm the second relay 142 according to the signal states of the second measuring point 152 and the third measuring point 153. Whether the normal operation; when the second measurement point 152 has a signal, the third measurement point 153 has no signal, the control device 17 confirms that the second relay 142 can operate normally; The second measuring point 152 has a signal, and the third measuring point 153 has When the number is up, the control device 17 confirms that the second relay 142 fails to operate normally; when the second measuring point 152 has no signal and the third measuring point 153 has no signal, the control device 17 confirms the The second relay 142 fails to operate normally; when the second measuring point 152 has no signal and the third measuring point 153 has a signal, the control device 17 confirms that the second relay 142 fails to operate normally; The control device 17 confirms that the second relay 142 fails to operate normally, and causes the warning module 171 to output the warning signal; as shown in FIG. 5, when the control device 17 is based on the first measurement point 151, the second measurement The signal state of the point 152 and the third measuring point 153 confirms that the first relay 141 and the second relay 142 can operate normally, that is, the normally closed contact B of the first relay 141 is short-circuited, and the normally-on contact is normally opened. A open circuit, the normally closed contact B of the second relay 142 is short-circuited, the normally open contact A is open, the third relay 143 is not turned on, the fourth relay 144 is not turned on, and the fifth relay 145 is not turned on to turn on the The line between the device under test 11 and the solar simulator 12 Subsequent simulations.

The steps of the high voltage test are as follows: as shown in FIG. 6, the control device 17 controls the first relay 141 and the second relay 142, respectively, so that the normally closed contact B of the first relay 141 is open, and the normally open contact A is shorted. The normally closed contact B of the second relay 142 is open, and the normally open contact A is short-circuited to turn on the line between the device under test 11 and the high voltage simulator, and respectively turn on the third relay 143, and the fourth The relay 144 is not turned on and the fifth relay 145 is turned on to confirm whether the first relay 141 is normally operated according to the signal states of the first measuring point 151 and the third measuring point 153; when the first measuring point is 151, when there is no signal, the third measuring point 153 has a signal, the control device 17 confirms that the first relay 141 can operate normally; in addition, when the first measuring point 151 has a signal, the third When the measuring point 153 has a signal, the control device 17 confirms that the first relay 141 fails to operate normally; when the first measuring point 151 has no signal and the third measuring point 153 has no signal, the control Device 17 confirms that the first relay 141 is not functioning properly; When the measuring point 151 has a signal and the third measuring point 153 has no signal, the control device 17 confirms that the first relay 141 is not working normally; once the control device 17 confirms that the first relay 141 is not working properly The warning module 171 outputs the warning signal; as shown in FIG. 7, the control device 17 then controls the first relay 141 and the second relay 142 to open the normally closed contact B of the first relay 141. The normally open contact A is short-circuited, the normally closed contact B of the second relay 142 is open, and the normally open contact A is short-circuited to turn on the line between the device under test 11 and the high-voltage tester 13, and respectively make the first The third relay 143 is not turned on, the fourth relay 144 is turned on, and the fifth relay 145 is turned on to confirm whether the second relay 142 is operating normally according to the signal states of the second measuring point 152 and the third measuring point 153. When the second measuring point 152 has no signal and the third measuring point 153 has a signal, the control device 17 confirms that the second relay 142 can operate normally; in addition, when the second measuring Point 152 has a signal, and the third measuring point 153 has a signal. The control device 17 confirms that the second relay 142 fails to operate normally; when the second measurement point 152 has a signal and the third measurement point 153 has no signal, the control device 17 confirms the second The relay 142 fails to operate normally; when the second measuring point 152 has a signal and the third measuring point 153 has no signal, the control device 17 confirms that the second relay 142 fails to operate normally; once the control device 17 confirming that the second relay 142 fails to operate normally, the warning module 171 outputs the warning signal; as shown in FIG. 8, when the control device 17 is based on the first measuring point 151 and the second measuring point 152 And the signal state of the third measuring point 153 confirms that the first relay 141 and the second relay 142 can operate normally, that is, the normally closed contact B of the first relay 141 can be controlled to open, and the normally open contact A is short-circuited. The normally closed contact B of the second relay 142 is open, the normally open contact A is shorted, the third relay 143 is not turned on, the fourth relay 144 is not turned on, and the fifth relay 145 is not turned on to turn on the test. The line between the device 11 and the high voltage tester 13 is convenient for the post Continued high pressure test.

As shown in FIG. 9, a schematic circuit diagram of a second embodiment of the present invention is disclosed. The present embodiment is basically the same as the concept of the test system of the first embodiment, and the only difference is that the multiple protection coils are added in this embodiment. The first coil 161, the second coil 162, and the third coil 163 are coupled to the third relay 143, the fourth relay 144, and the fifth relay 145, respectively.

In this manner, the control device 17 can also confirm whether the first relay 141 and the second relay 142 are normally operated by detecting the conduction states of the first coil 161, the second coil 162, and the third coil 163.

The steps of the simulation test are as follows: the control device 17 controls the first relay 141 and the second relay 142 to short-circuit the normally closed contact B of the first relay 141, and the normally open contact A is open. The second relay 142 The normally closed contact B is short-circuited, and the normally open contact A is open to turn on the line between the device under test 11 and the solar simulator 12, and the third relay 143 is turned on, and the fourth relay 144 is not turned on. And the fifth relay 145 is turned on to confirm whether the first relay 141 is normally operated according to the conduction state of the first coil 161 and the third coil 163; when the first coil 161 is turned on, the third coil 163 is not turned on. When the control device 17 confirms that the first relay 141 can operate normally; in addition, when the first coil 161 is turned on and the third coil 163 is turned on, the control device 17 confirms that the first relay 141 is not The first coil 161 is not turned on, and the third coil 163 is not turned on, the control device 17 confirms that the first relay 141 fails to operate normally; when the first coil 161 is not turned on, the third When the coil 163 is turned on, The control device 17 confirms that the first relay 141 is not functioning normally; once the control device 17 confirms that the first relay 141 is not functioning properly, the warning module 171 outputs the warning signal; the control device 17 then controls separately The first relay 141 and the second relay 142 short-circuit the normally closed contact B of the first relay 141, the normally open contact A is open, the normally closed contact B of the second relay 142 is short-circuited, and the normally open contact A is opened to turn on the line between the device under test 11 and the solar simulator 12, and the third relay 143 is not turned on, the fourth relay 144 is turned on, and the fifth relay 145 is turned on, according to the first The second coil 162 and the third coil 163 are in an on state to confirm whether the second relay 142 is normally operated. When the second coil 162 is turned on and the third coil 163 is not turned on, the control device 17 confirms the second relay. 142 can operate normally; in addition, when the second coil 162 is turned on and the third coil 163 is turned on, the control device 17 confirms that the second relay 142 fails to operate normally; when the second coil 162 is not turned on , When the three coils 163 are not turned on, the control device 17 confirms that the second relay 142 fails to operate normally; when the second coil 162 is not turned on and the third coil 163 is turned on, the control device 17 confirms the second relay 142 fails to operate normally; once the control device 17 confirms that the second relay 142 is not working properly, the warning module 171 outputs the warning signal; afterwards, when the control device 17 is based on the first coil 161, the second The conduction state of the coil 162 and the third coil 163 confirms that the first relay 141 and the second relay 142 can operate normally, and the normally closed contact B of the first relay 141 can be controlled to be short-circuited, and the normally open contact A is opened. The normally closed contact B of the second relay 142 is short-circuited, the normally open contact A is open, the third relay 143 is not turned on, the fourth relay 144 is not turned on, and the fifth relay 145 is not turned on to turn on the test. The line between the device 11 and the solar simulator 12 facilitates subsequent simulation testing.

The operation steps of the high voltage test are as follows: the control device 17 controls the first relay 141 and the second relay 142, respectively, so that the normally closed contact B of the first relay 141 is open, and the normally open contact A is shorted, and the second relay The normally closed contact B of 142 is open, and the normally open contact A is short-circuited to turn on the line between the device under test 11 and the high voltage simulator, and the third relay 143 is turned on, and the fourth relay 144 is not turned on, respectively. The fifth relay 145 is turned on to confirm whether the first relay 141 is normally operated according to the conduction state of the first coil 161 and the third coil 163; when the first coil 161 is not turned on and the third coil 163 is turned on The control device 17 confirms that the first relay 141 can operate normally; in addition, when the first coil 161 is turned on and the third coil 163 is turned on, the control device 17 confirms that the first relay 141 fails. Normal operation; when the first coil 161 is not turned on and the third coil 163 is not turned on, the control device 17 confirms that the first relay 141 fails to operate normally; when the first coil 161 is turned on, the third coil 163 When not turned on The control device 17 confirms that the first relay 141 is not functioning normally; once the control device 17 confirms that the first relay 141 is not functioning properly, the warning module 171 outputs the warning signal; the control device 17 then controls separately The first relay 141 and the second relay 142 open the normally closed contact B of the first relay 141, the normally open contact A is short-circuited, the normally closed contact B of the second relay 142 is open, and the normally open contact A short circuit to turn on the line between the device under test 11 and the high voltage tester 13, and respectively make the third relay 143 not turned on, the fourth relay 144 is turned on, and the fifth relay 145 is turned on, according to the second The conduction state of the coil 162 and the third coil 163 confirms whether the second relay 142 is normally operated. When the second coil 162 is not turned on and the third coil 163 is turned on, the control device 17 confirms the second relay 142. In addition, when the second coil 162 is turned on and the third coil 163 is turned on, the control device 17 confirms that the second relay 142 fails to operate normally; when the second coil 162 is not turned on, The first When the three coils 163 are not turned on, the control device 17 confirms that the second relay 142 fails to operate normally; when the second coil 162 is turned on and the third coil 163 is not turned on, the control device 17 confirms the second relay 142 fails to operate normally; once the control device 17 confirms that the second relay 142 is not working properly, the warning module 171 outputs the warning signal; afterwards, when the control device 17 is based on the first coil 161, the second The conduction state of the coil 162 and the third coil 163 confirms that the first relay 141 and the second relay 142 can operate normally, and the normally closed contact B of the first relay 141 can be controlled to open, and the normally open contact A is short-circuited. The normally closed contact B of the second relay 142 is open, the normally open contact A is shorted, the third relay 143 is not turned on, the fourth relay 144 is not turned on, and the fifth relay 145 is not turned on to turn on the test. The line between the device 11 and the high voltage tester 13 facilitates subsequent high voltage testing.

As shown in FIG. 10, a schematic circuit diagram of a third embodiment of the present invention is disclosed. The present embodiment is basically the same as the test system of the first embodiment. The only difference is that the sixth relay 146 is added to the embodiment. The sixth relay 146 is used for high voltage protection. The different contacts of the sixth relay 146 are respectively coupled to the normally closed contact B of the first relay 141, the normally closed contact B of the second relay 142, and the solar simulation. The anode of the device 12, the cathode of the solar simulator 12, and a ground contact.

When the control device 17 confirms that the first relay 141 and the second relay 142 can operate normally according to the steps of the high voltage test, and controls the subsequent high voltage test, the normally closed contact of the first relay 141 is first controlled. B open circuit, normally open contact A short circuit, the normally closed contact B of the second relay 142 is open, the normally open contact A is shorted, the third relay 143 is not conducting, the fourth relay 144 is not conducting, the fifth relay The 145 is not turned on and the sixth relay 146 is turned on, so that the solar simulator 12 is grounded first to protect the solar simulator 12 from the threat of high voltage, and then the subsequent high voltage test is performed.

As shown in FIG. 11, a schematic circuit diagram of a fourth embodiment of the present invention is disclosed. The present embodiment is basically the same as the first embodiment and the third embodiment, and is based on the first embodiment and the third implementation. For example, the test system is modified to detect and confirm whether the first relay 141 and the second relay 142 can operate normally with a small number of measurement points (only the third measurement point 153), and utilize a first Seven relays 147 act as high voltage protection to protect the solar simulator 12 from high voltage power.

The different contacts of the seventh relay 147 are respectively coupled to the normally closed contact B of the first relay 141, the normally closed contact B of the second relay 142, the positive pole of the solar simulator 12, and the solar simulator. The negative pole of 12 and the grounding contact.

The steps of the simulation test are as follows: the control device 17 controls the first relay 141 and the second relay 142 to short-circuit the normally closed contact B of the first relay 141, and the normally open contact A is open. The second relay 142 The normally closed contact B is short-circuited, and the normally open contact A is open to turn on the line between the device under test 11 and the solar simulator 12, and the third relay 143 is turned on and the fourth relay 144 is turned on, The fifth relay 145 is turned on and the seventh relay 147 is not turned on to confirm whether the first relay 141 and the second relay 142 are operating normally according to the signal state of the third measuring point 153; when the third measurement is performed When the signal 153 has no signal, the control device 17 confirms that the first relay 141 and the second relay 142 can operate normally; in addition, when the third measuring point 153 has a signal, the control device 17 confirms The first relay 141 and the second relay 142 are not functioning normally; once the control device 17 confirms that the first relay 141 and the second relay 142 are not working normally, the warning module 171 outputs the warning signal; When the control is installed According to the signal state of the third measuring point 153, it can be confirmed that the first relay 141 and the second relay 142 can operate normally, and the normally closed contact B of the first relay 141 can be controlled to be short-circuited, and the normally-on contact is normally opened. A open circuit, the normally closed contact B of the second relay 142 is short-circuited, the normally open contact A is open, the third relay 143 is not turned on, the fourth relay 144 is not turned on, the fifth relay 145 is not turned on, and the seventh The relay 147 is not turned on to turn on the line between the device under test 11 and the solar simulator 12 to facilitate subsequent simulation tests.

The steps of the high voltage test are as follows: the control device 17 controls the first relay 141 and the second relay 142 respectively, so that the normally closed contact B of the first relay 141 is open, and the normally open contact A is shorted. The second relay 142 The normally closed contact B is open, and the normally open contact A is short-circuited to turn on the line between the device under test 11 and the high voltage simulator, and the third relay 143 is turned on and the fourth relay 144 is not turned on, respectively. The fifth relay 145 is turned on and the seventh relay 147 is not turned on to confirm whether the first relay 141 is normally operated according to the signal state of the third measuring point 153; when the third measuring point 153 has a signal, the The control device 17 confirms that the first relay 141 can operate normally; in addition, when the third measuring point 153 has no signal, the control device 17 confirms that the first relay 141 is not functioning properly; The control device 17 confirms that the first relay 141 fails to operate normally, and causes the warning module 171 to output the warning signal; the control device 17 then maintains the first relay 141 and the second relay 142 to make the first relay 141 Normally closed The point B is open, the normally open contact A is short-circuited, the normally closed contact B of the second relay 142 is open, the normally open contact A is short-circuited, and the third relay 143 is not turned on, and the fourth relay 144 is turned on. The fifth relay 145 is turned on and the seventh relay 147 is not turned on to confirm whether the second relay 142 is normally operated according to the signal state of the third measuring point 153; when the third measuring point 153 has a signal The control device 17 confirms that the second relay 142 can operate normally; in addition, when the third measurement point 153 has no signal, the control device 17 confirms that the second relay 142 fails to operate normally; The warning module 171 outputs the warning signal once the control device 17 confirms that the second relay 142 is not operating normally; when the control device 17 confirms the first relay 141 and the second relay according to the step of the high voltage test described above After the 142 can operate normally, and before the subsequent high voltage test is performed, the normally closed contact B of the first relay 141 is first opened, the normally open contact A is shorted, and the normally closed contact B of the second relay 142 is opened. Normally open contact A Short circuit, the third relay 143 is not turned on, the fourth relay 144 is not turned on, the fifth relay 145 is not turned on, and the seventh relay 147 is turned on, so that the solar simulator 12 is grounded first to protect the solar simulator. 12 from the threat of high voltage power, and then carry out subsequent high voltage tests.

In summary, the present invention controls the switching module 14 to select one of the solar simulator 12 and the high voltage tester 13 through the control device 17 to perform the device 11 to be tested. The test is performed, and the state of the relay is detected by the control device 17 to confirm whether the switching module 14 can work normally, thereby making the test of the device under test 11 more stable and time-saving, thereby improving test efficiency.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention. within.

11. . . Device under test

12. . . Solar simulator

13. . . High voltage tester

14. . . Switching module

141. . . First relay

142. . . Second relay

143. . . Third relay

144. . . Fourth relay

145. . . Fifth relay

146. . . Sixth relay

147. . . Seventh relay

151. . . First measuring point

152. . . Second measuring point

153. . . Third measuring point

161. . . First coil

162. . . Second coil

163. . . Third coil

17. . . Control device

171. . . Warning module

C. . . Common joint

B. . . Normally closed contact

A. . . Normally open contact

1 is a schematic diagram of configuration and control of a first embodiment of the present invention;

Figure 2 is a circuit diagram of the embodiment shown in Figure 1;

3 to 5 are circuit diagrams of the detection before the simulation test of FIG. 2;

6 to 8 are circuit diagrams of the detection before the high voltage test of FIG. 2;

Figure 9 is a circuit diagram of a second embodiment of the present invention;

Figure 10 is a circuit diagram of a third embodiment of the present invention;

Figure 11 is a circuit diagram of a fourth embodiment of the present invention.

11. . . Device under test

12. . . Solar simulator

13. . . High voltage tester

14. . . Switching module

17. . . Control device

171. . . Warning module

Claims (6)

A test system includes: a device to be tested; a plurality of measuring instruments for testing the device to be tested; a control device for outputting a control signal; and a switching module comprising two switches for use as a switch a first relay and a second relay, and a plurality of third relays, fourth relays, and fifth relays for detecting the control device, wherein the first relay and the second relay are respectively coupled to the device to be tested and the plurality of The third relay, the fourth relay, and the fifth relay are respectively coupled to the first relay, the second relay, the control device, and the plurality of measuring instruments, respectively, for determining, according to the control signal, One of the plurality of measuring instruments tests the device to be tested; wherein the third relay, the fourth relay, and the fifth relay respectively have a measuring point coupled to the control device, and the control device controls the switching Before the module performs switching of the plurality of measuring instruments, detecting signal states of the plurality of measuring points to confirm that the first relay and the second relay can operate normally Then cutting through the selected first relay and the second relay to determine which one of the plurality of measuring instruments for testing the device under test amount. The test system of claim 1, wherein the device to be tested is a solar cell. The test system of claim 2, wherein the plurality of measuring instruments comprise a solar simulator and a high voltage tester. The test system of claim 1, wherein the relay is selected from one of a vacuum relay and a high voltage relay. The test system of claim 1, wherein a third coil, a fourth relay, and a fifth relay are respectively provided with a coil, and the control device detects the conduction state of the plurality of coils via the measuring point. Confirm that the multiple relays are working properly. The test system of claim 1, wherein the control device further comprises a warning module, and when the control device confirms that the first relay or the second relay fails to operate normally, the warning module outputs a warning module Warning signal.