CN115407173A - Thermal runaway testing device for diode of photovoltaic junction box - Google Patents
Thermal runaway testing device for diode of photovoltaic junction box Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2632—Circuits therefor for testing diodes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2642—Testing semiconductor operation lifetime or reliability, e.g. by accelerated life tests
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to the technical field of junction box diode testing, in particular to a thermal runaway testing device for a photovoltaic junction box diode, which comprises a programmable controller, wherein the programmable controller is connected with a signal input button, the programmable controller is also connected with a normally-open power relay and an integrated AC seat, the normally-open power relay is connected with a direct current power supply, the integrated AC seat is connected with external alternating current, the integrated AC seat is connected with an AC-DC power converter, the DC-DC power converter, the normally-open power relay, a cooling fan and a first capacitor are all connected with the AC-DC power converter, the DC-DC power converter is also connected with a second capacitor, the normally-open power relay is also connected with a direct current meter, and the programmable controller, the normally-open power relay, the integrated AC seat, the AC-DC power converter and the DC-DC power converter are all connected with wiring terminals. The testing device is simple to build and convenient to assemble, so that when the device fails or is abnormal, the structural unit is convenient to replace, repair and maintain.
Description
Technical Field
The invention relates to the technical field of junction box diode testing, in particular to a thermal runaway testing device for a photovoltaic junction box diode.
Background
As a bypass diode in the solar module, the diode is started in the forward direction due to the components, the diode generates heat due to continuous forward current when current of other components flows, and the diode is closed when the corresponding component restores to generate power normally, so that the voltage output by the component is restored, namely the diode is in a reverse bias cut-off state. During the switching of the operating state, the diode may be heated by the forward current when the diode is switched to the reverse bias, so that the reverse leakage current of the diode continuously rises, and the temperature rises. If the bypass diode is reverse biased, it will develop persistent leakage current causing the junction temperature of the diode to increase, the worst case being a temperature rise that exceeds the cooling capability of the junction box. The phenomenon of the bypass diode damage caused by temperature rise and leakage current is called thermal runaway.
In the prior art, a diode thermal runaway testing device is complex and has high cost.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a thermal runaway testing device for a diode of a photovoltaic junction box.
The invention provides the following technical scheme:
a thermal runaway testing device for a photovoltaic junction box diode comprises a programmable controller, wherein the programmable controller is connected with a signal input button, the programmable controller is further connected with a normally open power relay and an integrated AC seat, the normally open power relay is connected with a direct current power supply, the integrated AC seat is connected with external alternating current, the integrated AC seat is connected with an AC-DC power converter, the DC-DC power converter, the normally open power relay, a cooling fan and a first capacitor are all connected with the AC-DC power converter, the DC-DC power converter is further connected with a second capacitor, the normally open power relay is further connected with a direct current ammeter, and the programmable controller, the normally open power relay, the integrated AC seat, the AC-DC power converter and the DC-DC power converter are all connected with wiring terminals;
the programmable controller is used for realizing the sending of the control instruction;
the signal input button is used for switching signals of control instructions;
the integrated AC seat is used for connecting external alternating current, providing power for the whole machine and having the function of overcurrent protection;
and the direct current ammeter is used for monitoring the current of the test loop in real time.
Preferably, the signal input buttons include a first signal input button and a second signal input button, the first signal input button is connected to an X1 interface of the input end of the programmable controller, the second signal input button is connected to an X0 interface of the input end of the programmable controller, and the first signal input button and the second signal input button are both connected to a COM interface common to the programmable controller.
Preferably, the AC-DC power converter converts a single-phase AC power into a 12V DC power, and the AC-DC power converter supplies power to the DC-DC power converter, the internal coil of the normally open power relay, and the heat dissipation fan.
Preferably, the DC-DC power converter converts 12V DC power to isolated 5V DC power, and the DC-DC power converter supplies power to the DC ammeter.
Preferably, the number of the connecting terminals is 9, the first connecting terminal is used for connecting a single-phase alternating-current power supply, the second to fifth connecting terminals are used for connecting the cooling fan with the output end of the AC-DC power converter, and the sixth to ninth connecting terminals are used for connecting the direct-current power supply.
Preferably, a constant voltage input terminal and a constant voltage output terminal of the dc power supply are respectively connected to the sixth connection terminal and the seventh connection terminal, and a constant current input terminal and a constant current output terminal of the dc power supply are respectively connected to the eighth connection terminal and the ninth connection terminal.
Preferably, 4 normally-open power relays are arranged, the first normally-open power relay and the second normally-open power relay are respectively connected with the sixth wiring terminal and the seventh wiring terminal, and the third normally-open power relay and the fourth normally-open power relay are respectively connected with the eighth wiring terminal and the ninth wiring terminal.
Preferably, the seventh connection terminal and the ninth connection terminal are both connected with a junction box diode to be tested, the PIN1 interface of the seventh connection terminal is connected with the cathode of the junction box diode to be tested, the PIN2 interface of the seventh connection terminal is connected with the anode of the junction box diode to be tested, the PIN1 interface of the ninth connection terminal is connected with the anode of the junction box diode to be tested, and the PIN2 interface of the ninth connection terminal is connected with the cathode of the junction box diode to be tested.
A testing method of a preferable thermal runaway testing device for a photovoltaic junction box diode comprises the following specific operation steps:
s1, testing device connection stage: the first connecting terminal is connected with a single-phase direct-current power supply, a PIN1 interface of the sixth connecting terminal is connected with the positive pole of a constant-voltage mode of the direct-current power supply, a PIN2 interface of the sixth connecting terminal is connected with the negative pole of the constant-voltage mode of the direct-current power supply, a PIN1 interface of the eighth connecting terminal is connected with the positive pole of a constant-current mode of the direct-current power supply, and a PIN2 interface of the eighth connecting terminal is connected with the negative pole of the constant-current mode of the direct-current power supply;
s2, forward test: pressing down a first signal input button, receiving a switching value signal by a programmable controller, and controlling a first normally-open power relay and a second normally-open power relay to be electrified according to the switching value signal, so that a normally-open contact of the first normally-open power relay and a normally-open contact of the second normally-open power relay are both closed, an eighth connecting terminal is connected with a ninth connecting terminal through the first normally-open power relay and the second normally-open power relay at the moment, and a junction box diode to be tested is connected into a test loop to test the forward current of the junction box diode to be tested;
s3, reverse testing: after the forward test is carried out for 45 minutes, a second signal input button is pressed down, a programmable controller receives a switching value signal, and controls a first normally-open power relay and a second normally-open power relay to be powered off according to the switching value signal, so that a normally-open contact of the first normally-open power relay and a normally-open contact of the second normally-open power relay are both opened, a third normally-open power relay and a fourth normally-open power relay are powered on simultaneously, a normally-open contact of the third normally-open power relay and a normally-open contact of the fourth normally-open power relay are both closed, a sixth connecting terminal is connected with a seventh connecting terminal through the third normally-open power relay and the fourth normally-open power relay at the moment, a forward constant current state of a to-be-tested junction box diode is switched into a reverse constant voltage state, the time of the process of switching from the forward constant current state to the reverse constant voltage state is controlled within 10ms, and the reverse current test of the to-be-tested junction box diode is carried out;
the dc current meter monitors the current value in the reverse current test loop in real time while the second signal input button is pressed.
The invention has the beneficial effects that:
the testing device is composed of the programmable controller, the signal input button, the integrated AC base, the AC-DC power converter, the DC-DC power converter, the first capacitor, the second capacitor, the normally open power relay, the direct current meter and the wiring terminal, so that the composition of a unitized structure is realized, the testing cost is low, and the testing requirement in the non-mandatory standard based on IEC-62979 is met;
the test device is simple to build and convenient to form, so that when the device fails or is abnormal, structural unit replacement and maintenance are facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
labeled in the figure as: u1: programmable controller, U2: AC-DC power converter, U3: DC-DC power converter, SB1: first signal input button, SB2: second signal input button, C1: first capacitance, C2: second capacitance, K1: first normally open power relay, K2: second normally open power relay, K3: third normally open power relay, K4: fourth normally-open power relay, AMP: dc ammeter, J1: first connection terminal, J2: second connection terminal, J3: third connection terminal, J4: fourth connection terminal, J5: fifth connection terminal, J6: sixth connection terminal, J7: seventh connection terminal, J8: eighth junction terminal, J9: and a ninth connecting terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
According to the figure 1, the photovoltaic junction box diode thermal runaway testing device comprises a programmable controller U1, the programmable controller U1 is connected with a signal input button, the programmable controller U1 is further connected with a normally open power relay and an integrated AC seat, the normally open power relay is connected with a direct current power supply, the integrated AC seat is connected with external alternating current, the integrated AC seat is connected with an AC-DC power converter U2, a DC-DC power converter U3, the normally open power relay, a cooling fan and a first capacitor C1 are all connected with the AC-DC power converter U2, the DC-DC power converter U3 is further connected with a second capacitor C2, the normally open power relay is further connected with a direct current ammeter AMP, and the programmable controller U1, the normally open power relay, the integrated AC seat, the AC-DC power converter U2 and the DC-DC power converter U3 are all connected with wiring terminals.
The signal input buttons comprise a first signal input button SB1 and a second signal input button SB2, the first signal input button SB1 is connected with an X1 interface at the input end of the programmable controller U1, the second signal input button SB2 is connected with an X0 interface at the input end of the programmable controller U1, and the first signal input button SB1 and the second signal input button SB2 are both connected with a common COM interface of the programmable controller U1.
The number of the wiring terminals is 9, the first wiring terminal J1 is used for connecting a single-phase alternating-current power supply, the second to fifth wiring terminals J5 are used for connecting the cooling fan with the output end of the AC-DC power supply converter U2, and the sixth to ninth wiring terminals J9 are used for connecting a direct-current power supply. And a constant voltage input terminal and a constant voltage output terminal of the direct current power supply are respectively connected with the sixth wiring terminal J6 and the seventh wiring terminal J7, and a constant current input terminal and a constant current output terminal of the direct current power supply are respectively connected with the eighth wiring terminal J8 and the ninth wiring terminal J9. The seventh connecting terminal J7 and the ninth connecting terminal J9 are both connected with a junction box diode to be tested, the PIN1 interface of the seventh connecting terminal J7 is connected with the cathode of the junction box diode to be tested, the PIN2 interface of the seventh connecting terminal J7 is connected with the anode of the junction box diode to be tested, the PIN1 interface of the ninth connecting terminal J9 is connected with the anode of the junction box diode to be tested, and the PIN2 interface of the ninth connecting terminal J9 is connected with the cathode of the junction box diode to be tested.
Normally open power relay and be provided with 4, first normally open power relay K1 and the second normally open power relay K2 and connect sixth binding post J6 and seventh binding post J7 respectively, and the power relay K3 is normally opened to the third and the fourth normally open power relay K4 connects eighth binding post J8 and ninth binding post J9 respectively.
The AC-DC power converter U2 converts a single-phase alternating current power supply into 12V direct current, and the AC-DC power converter U2 supplies power to the DC-DC power converter U3, an internal coil of the normally open power relay and the cooling fan. The DC-DC power converter U3 converts the 12V DC power to an isolated 5V DC power, and the DC-DC power converter U3 powers the DC ammeter AMP.
And an operator assembles all the unit parts to realize the construction of the platform of the testing device. Meanwhile, the PIN2 interface of the seventh wiring terminal J7 and the PIN1 interface of the ninth wiring terminal J9 are both connected with the anode of the junction box diode to be tested, and the PIN1 interface of the seventh wiring terminal J7 and the PIN2 interface of the ninth wiring terminal J9 are both connected with the cathode of the junction box diode to be tested, so that the junction box diode to be tested is simultaneously connected into the forward current test loop and the reverse current test loop.
And the first signal input button SB1 and the second signal input button SB2 provide the switching value signal to the programmable controller U1 so as to start the test loop of the test device to realize the thermal runaway test.
And the switching value signal enables the programmable controller U1 to carry out on-off control on the two groups of normally-open power controllers. When the internal coil of the normally open power relay is electrified, a magnetic field is generated, the magnetic field attracts the normally open switch, so that the normally open contact is closed, and the forward current or reverse current test loop is switched on. And normally open power relay divide into two sets ofly, and a set of normally open power relay includes that first normally open power relay K1 and second normally open power relay K2 and control the break-make of forward current test circuit, and another group includes that third normally open power relay and fourth normally open power relay K4 and control the break-make of reverse current test circuit.
Specifically, the test method of the thermal runaway test device for the diode of the photovoltaic junction box comprises the following specific operation steps:
s1, testing device connection stage: the first connecting terminal J1 is connected to a single-phase direct-current power supply, a PIN1 interface of the sixth connecting terminal J6 is connected with the positive pole of a direct-current power supply constant-voltage mode, a PIN2 interface of the sixth connecting terminal J6 is connected with the negative pole of the direct-current power supply constant-voltage mode, a PIN1 interface of the eighth connecting terminal J8 is connected with the positive pole of the direct-current power supply constant-current mode, and a PIN2 interface of the eighth connecting terminal J8 is connected with the negative pole of the direct-current power supply constant-current mode;
s2, forward test: pressing down a first signal input button SB1, receiving a switching value signal by a programmable logic controller U1, controlling a first normally-open power relay K1 and a second normally-open power relay K2 to be electrified according to the switching value signal, so that a normally-open contact of the first normally-open power relay K1 and a normally-open contact of the second normally-open power relay K2 are both closed, at the moment, an eighth wiring terminal J8 is connected with a ninth wiring terminal J9 through the first normally-open power relay and the second normally-open power relay K2, and a diode of a junction box to be tested is connected into a test loop to test the forward current of the diode of the junction box to be tested;
s3, reverse testing: after the forward test is carried out for 45 minutes, the second signal input button SB2 is pressed, the programmable controller U1 receives a switching value signal, and controls the first normally-open power relay and the second normally-open power relay K2 to be powered off according to the switching value signal, so that the normally-open contacts of the first normally-open power relay K1 and the second normally-open power relay K2 are both opened, meanwhile, the third normally-open power relay and the fourth normally-open power relay K4 are powered on, so that the normally-open contacts of the third normally-open power relay K3 and the fourth normally-open power relay K4 are both closed, at the moment, the sixth wiring terminal J6 is connected with the seventh wiring terminal J7 through the third normally-open power relay and the fourth normally-open power relay K4, the diode of the junction box to be tested is switched to a reverse constant voltage state from a forward constant current state, and the time of the process of switching from the forward constant current state to the reverse constant voltage state is controlled within 10ms, and the reverse current test of the diode of the junction box to be tested is carried out;
the dc ammeter AMP monitors the current value in the reverse current test loop in real time while the second signal input button SB2 is pressed.
The specific detection requirements are as follows:
when the diode to be tested is switched from a forward current (after the device presses SB 1) to a reverse voltage (after the device presses SB 2), if the reverse leakage current of the diode continuously decreases from the moment of switching, the test is passed, and if the reverse leakage current of the diode continuously increases, the test is not passed.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The device for testing the thermal runaway of the diode of the photovoltaic junction box is characterized by comprising a programmable controller, wherein the programmable controller is connected with a signal input button, the programmable controller is further connected with a normally open power relay and an integrated AC seat, the normally open power relay is connected with a direct current power supply, the integrated AC seat is connected with external alternating current, the integrated AC seat is connected with an AC-DC power converter, the DC-DC power converter, the normally open power relay, a cooling fan and a first capacitor are all connected with the AC-DC power converter, the DC-DC power converter is further connected with a second capacitor, the normally open power relay is further connected with a direct current ammeter, and the programmable controller, the normally open power relay, the integrated AC seat, the AC-DC power converter and the DC-DC power converter are all connected with wiring terminals;
the programmable controller is used for realizing the sending of the control instruction;
the signal input button is used for switching signals of control instructions;
the integrated AC seat is used for connecting external alternating current, providing power for the whole machine and having the function of overcurrent protection;
and the direct current ammeter is used for monitoring the current of the test loop in real time.
2. The device for testing the thermal runaway of the diode of the photovoltaic junction box according to claim 1, wherein the signal input button comprises a first signal input button and a second signal input button, the first signal input button is connected with an X1 interface of the input end of the programmable controller, the second signal input button is connected with an X0 interface of the input end of the programmable controller, and the first signal input button and the second signal input button are both connected with a common COM interface of the programmable controller.
3. The device of claim 1, wherein the AC-DC power converter converts a single-phase AC power to 12V DC power, and the AC-DC power converter supplies power to the DC-DC power converter, the normally open power relay internal coil, and a heat dissipation fan.
4. The device for testing the thermal runaway of the diode of the photovoltaic junction box as recited in claim 3, wherein the DC-DC power converter converts 12V DC power to isolated 5V DC power and supplies power to the DC ammeter.
5. The device for testing the thermal runaway of the diode of the photovoltaic junction box as claimed in claim 1, wherein the number of the terminals is 9, the first terminal is used for connecting a single-phase alternating current power supply, the second to fifth terminals are used for connecting the cooling fan with the output end of the AC-DC power converter, and the sixth to ninth terminals are used for connecting the direct current power supply.
6. The device for testing the thermal runaway of the diode of the photovoltaic junction box as claimed in claim 5, wherein a constant voltage input terminal and a constant voltage output terminal of the DC power supply are respectively connected with the sixth connection terminal and the seventh connection terminal, and a constant current input terminal and a constant current output terminal of the DC power supply are respectively connected with the eighth connection terminal and the ninth connection terminal.
7. The photovoltaic junction box diode thermal runaway testing device as claimed in claim 6, wherein 4 normally open power relays are provided, the sixth connection terminal and the seventh connection terminal are respectively connected to the first normally open power relay and the second normally open power relay, and the eighth connection terminal and the ninth connection terminal are respectively connected to the third normally open power relay and the fourth normally open power relay.
8. The device for testing the thermal runaway of the photovoltaic junction box diode as claimed in claim 6, wherein the seventh junction box and the ninth junction box are both connected with a junction box diode to be tested, a PIN1 interface of the seventh junction box is connected with a cathode of the junction box diode to be tested, a PIN2 interface of the seventh junction box is connected with an anode of the junction box diode to be tested, a PIN1 interface of the ninth junction box is connected with an anode of the junction box diode to be tested, and a PIN2 interface of the ninth junction box is connected with a cathode of the junction box diode to be tested.
9. The testing method of the thermal runaway testing device for the diodes of the photovoltaic junction box according to claim 1 comprises the following specific operation steps:
s1, a testing device connection stage: the first connecting terminal is connected with a single-phase direct-current power supply, a PIN1 interface of the sixth connecting terminal is connected with the positive pole of a constant-voltage mode of the direct-current power supply, a PIN2 interface of the sixth connecting terminal is connected with the negative pole of the constant-voltage mode of the direct-current power supply, a PIN1 interface of the eighth connecting terminal is connected with the positive pole of a constant-current mode of the direct-current power supply, and a PIN2 interface of the eighth connecting terminal is connected with the negative pole of the constant-current mode of the direct-current power supply;
s2, forward test: pressing down a first signal input button, receiving a switching value signal by a programmable controller, and controlling a first normally-open power relay and a second normally-open power relay to be electrified according to the switching value signal, so that a normally-open contact of the first normally-open power relay and a normally-open contact of the second normally-open power relay are both closed, an eighth connecting terminal is connected with a ninth connecting terminal through the first normally-open power relay and the second normally-open power relay at the moment, and a junction box diode to be tested is connected into a test loop to test the forward current of the junction box diode to be tested;
s3, reverse testing: after the forward test is carried out for 45 minutes, a second signal input button is pressed, the programmable controller receives a switching value signal, and controls the first normally-open power relay and the second normally-open power relay to be powered off according to the switching value signal, so that the normally-open contact of the first normally-open power relay and the normally-open contact of the second normally-open power relay are both opened, meanwhile, the third normally-open power relay and the fourth normally-open power relay are powered on, the normally-open contact of the third normally-open power relay and the normally-open contact of the fourth normally-open power relay are both closed, at the moment, the sixth connecting terminal is connected with the seventh connecting terminal through the third normally-open power relay and the fourth normally-open power relay, the diode of the junction box to be tested is switched to a reverse constant voltage state from a forward constant current state, the time of the process of switching from the forward constant current state to the reverse constant voltage state is controlled within 10ms, and the reverse current test of the diode of the junction box to be tested is carried out;
the dc current meter monitors the current value in the reverse current test loop in real time while the second signal input button is pressed.
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| CN202211054206.3A CN115407173A (en) | 2022-08-31 | 2022-08-31 | Thermal runaway testing device for diode of photovoltaic junction box |
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| CN202211054206.3A CN115407173A (en) | 2022-08-31 | 2022-08-31 | Thermal runaway testing device for diode of photovoltaic junction box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117991068A (en) * | 2024-04-03 | 2024-05-07 | 浙江明禾新能科技股份有限公司 | Detection device for diode of photovoltaic junction box |
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2022
- 2022-08-31 CN CN202211054206.3A patent/CN115407173A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117991068A (en) * | 2024-04-03 | 2024-05-07 | 浙江明禾新能科技股份有限公司 | Detection device for diode of photovoltaic junction box |
| CN117991068B (en) * | 2024-04-03 | 2024-06-11 | 浙江明禾新能科技股份有限公司 | Detection device for diode of photovoltaic junction box |
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Address after: No.16, Yaxi Road, Zhixi Town, Jintan District, Changzhou City, Jiangsu Province 213200 Applicant after: Jiangsu Zerun Xinneng Technology Co.,Ltd. Address before: No.16, Yaxi Road, Zhixi Town, Jintan District, Changzhou City, Jiangsu Province 213200 Applicant before: Jiangsu Zerun New Material Co.,Ltd. |
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