CN107462800A - Bypass diode detection method and system in photovoltaic module - Google Patents
Bypass diode detection method and system in photovoltaic module Download PDFInfo
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- CN107462800A CN107462800A CN201710652820.2A CN201710652820A CN107462800A CN 107462800 A CN107462800 A CN 107462800A CN 201710652820 A CN201710652820 A CN 201710652820A CN 107462800 A CN107462800 A CN 107462800A
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- bypass diode
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- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 238000005259 measurement Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 claims description 7
- 230000015654 memory Effects 0.000 description 12
- 238000003860 storage Methods 0.000 description 12
- 238000004590 computer program Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
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- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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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
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The present invention is applied to photovoltaic apparatus detection technique field, there is provided bypass diode detection method and system, method include in a kind of photovoltaic module：The measurement magnitude of voltage of the quantity set measurement power supply of bypass diode in photovoltaic module；The positive pole for measuring power supply is connected to the negative pole of photovoltaic module, the negative pole for measuring power supply is connected to the positive pole of photovoltaic module；Measure the current value of photovoltaic module；When the current value of photovoltaic module is in the first pre-set current value scope, the equal normal work of all bypass diodes of photovoltaic module is judged；When the current value of photovoltaic module is in the second pre-set current value scope, judge that open circuit occurs at least one bypass diode in photovoltaic module.The embodiment of the present invention can detect to the open circuit of bypass diode in photovoltaic module, can be achieved to bypass diode complete detection, to improve the accuracy of detection.
Description
Technical field
The invention belongs to bypass diode detection side in photovoltaic apparatus detection technique field, more particularly to a kind of photovoltaic module
Method and system.
Background technology
Photovoltaic module is composed in series by multiple photovoltaic cells, when any battery unit in photovoltaic module is hidden
Keep off or occur hidden when splitting problem, the generating of other batteries in whole circuit can be influenceed, while the battery unit being blocked can consume
The electric energy of other battery units and steep temperature rise, occur hot spot effect, may cause the generation of fire.In existing photovoltaic module
Bypass diode is all employ to protect photovoltaic module, when in component any one battery unit occur problem (block or
It is hidden to split), the bypass diode automatic start being connected in reverse parallel on battery unit, the battery unit of generation problem is masked, is avoided
The generation of hot spot effect.Because bypass diode plays an important role in photovoltaic module, detect its function and normally ensure bypass
The performance of diode is significant.
The means that current traditional bypass diode to photovoltaic module is detected are usually：To the logical forward direction of battery unit
Electric current, now bypass diode be in direction biasing, when do not have in battery unit electric current by when, confirm diode occur it is short
Road, when battery unit have electric current by when, can not determine that bypass diode is normal condition, or off state, that is to say, that
Prior art can not detect the off state of bypass diode, can not realize to bypass diode complete detection, detection accuracy
It is low.
The content of the invention
In view of this, the embodiments of the invention provide bypass diode detection method and system in a kind of photovoltaic module, energy
Enough open circuits to bypass diode in photovoltaic module detect, and can be achieved to bypass diode complete detection, improve the accurate of detection
Property.
The first aspect of the embodiment of the present invention, there is provided bypass diode detection method in a kind of photovoltaic module, photovoltaic group
Part includes the battery unit of multiple series connection, and each battery unit and a bypass diode reverse parallel connection, methods described include：
The measurement magnitude of voltage of the quantity set measurement power supply of bypass diode in the photovoltaic module；
The positive pole of the measurement power supply is connected to the negative pole of the photovoltaic module, the negative pole of the measurement power supply is connected into institute
State the positive pole of photovoltaic module；
Measure the current value of the photovoltaic module；
When the current value of the photovoltaic module is in the first pre-set current value scope, all sides of the photovoltaic module are judged
The equal normal work of road diode；
When the current value of the photovoltaic module is in the second pre-set current value scope, judge in the photovoltaic module at least
Open circuit occurs for one bypass diode.
The second aspect of the embodiment of the present invention, there is provided bypass diode detecting system in a kind of photovoltaic module, including：
Photovoltaic module includes the battery unit of multiple series connection, and each battery unit and a bypass diode are reverse simultaneously
Connection, the system include：
Voltage value module is measured, the quantity set for the bypass diode in the photovoltaic module measures electricity
The measurement magnitude of voltage in source；
Power on module, for the positive pole of the measurement power supply to be connected to the negative pole of the photovoltaic module, the measurement
The negative pole of power supply connects the positive pole of the photovoltaic module；
Measurement module, for measuring the current value of the photovoltaic module；
First determining module, for when the current value of the photovoltaic module is in the first pre-set current value scope, judging institute
State the equal normal work of all bypass diodes of photovoltaic module；
Second determining module, the current value for the photovoltaic module is in the second pre-set current value scope, described in judgement
Open circuit occurs at least one bypass diode in photovoltaic module.
The beneficial effect of the embodiment of the present invention compared with prior art is：A kind of photovoltaic module provided in an embodiment of the present invention
Middle bypass diode detection method and system, power supply is measured by the quantity set of the bypass diode in photovoltaic module
Measure magnitude of voltage；The positive pole for measuring power supply is connected to the negative pole of photovoltaic module, the negative pole for measuring power supply is connected into photovoltaic module
Positive pole；Measure the current value of photovoltaic module；When the current value of photovoltaic module is in the first pre-set current value scope, photovoltaic group is judged
The equal normal work of all bypass diodes of part；When the current value of photovoltaic module is in the second pre-set current value scope, light is judged
Lie prostrate at least one bypass diode in component and open circuit occurs.The embodiment of the present invention can be to bypass diode in photovoltaic module
Open circuit detection, it can be achieved to bypass diode complete detection, to improve the accuracy of detection.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the flow signal of bypass diode detection method in a kind of photovoltaic module that one embodiment of the invention provides
Figure；
Fig. 2 is the structural representation of photovoltaic module provided in an embodiment of the present invention；
Fig. 3 is that the flow of bypass diode detection method in a kind of photovoltaic module that another embodiment of the present invention provides is shown
It is intended to；
Fig. 4 is the structural frames of bypass diode detecting system in a kind of photovoltaic module that one embodiment of the invention provides
Figure；
Fig. 5 is the terminal device of bypass diode detecting system in a kind of photovoltaic module that one embodiment of the invention provides
Schematic block diagram.
Embodiment
In describing below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, thoroughly to understand the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known system, device, electricity
Road and the detailed description of method, in case unnecessary details hinders description of the invention.
It should be appreciated that ought be in this specification and in the appended claims in use, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but it is not precluded from one or more of the other feature, whole
Body, step, operation, element, component and/or its presence or addition for gathering.
It is also understood that the term used in this description of the invention is merely for the sake of the mesh for describing specific embodiment
And be not intended to limit the present invention.As used in description of the invention and appended claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singulative, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in description of the invention and appended claims is
Refer to any combinations of one or more of the associated item listed and be possible to combine, and including these combinations.
As used in this specification and in the appended claims, term " if " can be according to context quilt
Be construed to " when ... " or " once " or " in response to determining " or " in response to detecting ".Similarly, phrase " if it is determined that " or
" if detecting [described condition or event] " can be interpreted to mean according to context " once it is determined that " or " in response to true
It is fixed " or " once detecting [described condition or event] " or " in response to detecting [described condition or event] ".
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
With reference to figure 1, Fig. 1 is bypass diode detection method in a kind of photovoltaic module that one embodiment of the invention provides
Schematic flow sheet.With reference to figure 2, Fig. 2 is the structural representation of photovoltaic module provided in an embodiment of the present invention, wherein photovoltaic module bag
Include the battery unit 201 of multiple series connection, each battery unit 201 and a reverse parallel connection of bypass diode 202.The present embodiment is detailed
State as follows：
S101：The measurement magnitude of voltage of the quantity set measurement power supply of bypass diode in photovoltaic module.
In embodiments of the present invention, the quantity of bypass diode can be any amount in photovoltaic module, and the present invention is real
Apply example to be not intended to be limited in any this, such as can be 60.According to needed for a bypass diode generally conducting in photovoltaic module
The magnitude of voltage wanted, and the annexation (serial or parallel connection) of photovoltaic module bypass diode, it is determined that the measurement electricity of measurement power supply
Pressure value.
S102：The positive pole for measuring power supply is connected to the negative pole of photovoltaic module, the negative pole for measuring power supply connects photovoltaic module
Positive pole.
In embodiments of the present invention, because bypass diode in photovoltaic module and battery unit are connected in antiparallel,
When the negative pole that the positive pole for measuring power supply is connected to photovoltaic module, when measuring the positive pole of negative pole connection photovoltaic module of power supply, photovoltaic
Bypass diode is in the conduction state in component.Simultaneously because battery unit is typically to be made up of silicon chip in photovoltaic module, in fact
Matter is also diode, and when the negative pole that the positive pole for measuring power supply is connected to photovoltaic module, the negative pole for measuring power supply connects photovoltaic module
Positive pole when, battery unit is in cut-off state in photovoltaic module.
S103：Measure the current value of photovoltaic module.
In embodiments of the present invention, the current value of photovoltaic module can be measured by voltage x current monitoring arrangement.It is for example, electric
The measurement of current voltage monitoring arrangement can be ammeter or universal meter.
S104：When the current value of photovoltaic module is in the first pre-set current value scope, all bypasses of photovoltaic module are judged
The equal normal work of diode.
In embodiments of the present invention, because bypass diode has pressure drop in itself, when have electric current by when, bypass diode
Electric energy can be consumed and generated heat, destroyed when the too high high polymer material that can cause to contact with bypass diode that generates heat melts.Therefore,
One preset range is what is set respectively according to the characteristic of bypass diode, it is only necessary to which guarantee has more obvious electric current to pass through i.e.
Can.
S105：When the current value of photovoltaic module is in the second pre-set current value scope, judge at least one in photovoltaic module
Open circuit occurs for individual bypass diode.
In embodiments of the present invention, when occurring breaking due to bypass diode, bypass diode is in cut-off state.And with
Breaking bypass diode battery unit in parallel occurs and is in reverse-bias state, has weak current to pass through.Therefore, second is default
Value range is to be in the weak current of reverse-bias state according to battery unit and set.
It was found from above-described embodiment, the survey of power supply is measured by the quantity set of the bypass diode in photovoltaic module
Measure magnitude of voltage；The positive pole for measuring power supply is connected to the negative pole of photovoltaic module, the negative pole for measuring power supply is being connected into photovoltaic module just
Pole；Measure the current value of photovoltaic module；When the current value of photovoltaic module is in the first pre-set current value scope, photovoltaic module is judged
The equal normal work of all bypass diodes；When the current value of photovoltaic module is in the second pre-set current value scope, photovoltaic is judged
Open circuit occurs at least one bypass diode in component.The embodiment of the present invention can break to bypass diode in photovoltaic module
Road is detected, and can be achieved to bypass diode complete detection, to improve the accuracy of detection.
With reference to figure 3, Fig. 3 is bypass diode detection method in a kind of photovoltaic module that another embodiment of the present invention provides
Schematic flow sheet.Details are as follows for the present embodiment：
S301：The forward conduction voltage of the quantity of bypass diode in photovoltaic module and a bypass diode,
It is determined that the minimum value of measurement magnitude of voltage.
In embodiments of the present invention, the forward conduction voltage of bypass diode is the characteristic of bypass diode, for example, generally
Bypass diode forward conduction voltage 0.5V, when the bypass diode in photovoltaic module quantity be 60 when, then measure
The minimum value of magnitude of voltage is：60 × 0.5V=30V.
S302：According to the breakdown voltage value of battery unit in minimum value and photovoltaic module, it is determined that the maximum of measurement magnitude of voltage
Value.
In embodiments of the present invention, battery unit is substantially diode, and its breakdown voltage value is usually 20V, then measurement electricity
The maximum of pressure value adds 20V for the minimum value of measurement magnitude of voltage.For example, when the minimum value for measuring magnitude of voltage is 30V, then
Measurement magnitude of voltage maximum be：30V+20V=50V.
S303：According to the minimum value and the maximum, the measurement magnitude of voltage is determined.
In embodiments of the present invention, can be gone in minimum value to the maximum for measuring magnitude of voltage of measurement magnitude of voltage any
Magnitude of voltage is as measurement magnitude of voltage.For example, when the minimum value of measurement magnitude of voltage is 30V, then the maximum for measuring magnitude of voltage is 50V
When, it may be determined that measure the scope [30V, 50V] of magnitude of voltage.
Step S304 to S307 is consistent with step S102 to S105 content, specifically refers to step S102 to S105 phase
Hold inside the Pass, repeat no more here.
S308：Measurement magnitude of voltage is increased into preset voltage value, preset voltage value is to make the pole of bypass two with open circuit occurs
The voltage of reverse bias occurs for pipe battery unit in parallel.
In embodiments of the present invention, preset voltage value can be the breakdown voltage of battery unit, such as 20V.Now occur
The bypass diode of open circuit battery unit in parallel occurs reverse bias and sends amount of heat.
S309：Obtain the infrared image of each battery unit in the photovoltaic module.
In embodiments of the present invention, infreared imaging device can be used, obtains each battery unit in the photovoltaic module
Infrared image.
S310：Determine that the bypass diode of open circuit occurs for the photovoltaic module according to infrared image.
In embodiments of the present invention, the battery unit of heating is determined according to infrared image, further according to the electricity for detecting heating
The particular location of pool unit, so that it is determined that the particular location of the bypass diode of open circuit occurs for photovoltaic module.When it is determined that occurring disconnected
After the particular location of the bypass diode on road, the corresponding particular location of maintenance personal can be notified as follow-up maintenance foundation.
It was found from above-described embodiment, bypass diode detection method in the photovoltaic module that the present embodiment provides, pass through setting
Measure the minimum value of magnitude of voltage and the maximum occurrences of measurement magnitude of voltage, it is ensured that measure will not crossing and destroying light for magnitude of voltage
Component is lied prostrate, and can improves the accuracy of measurement；Simultaneously by the way that measurement magnitude of voltage is increased into preset voltage value, so that with occurring to break
The bypass diode on road battery unit in parallel occurs reverse bias and generated heat, and according to the battery unit of heating, determines the light
The bypass diode that open circuit occurs for component is lied prostrate, can accurately determine that the particular location of the bypass diode of open circuit occurs, realize
Fast failure positions and maintenance.
In one embodiment of the invention, first preset range value is 0.1A to 4A.
In one embodiment of the invention, second preset range value is 0A to 0.1A.
In embodiments of the present invention, the second preset range value can be the current value of the μ A orders of magnitude.
It should be understood that the size of the sequence number of each step is not meant to the priority of execution sequence, each process in above-described embodiment
Execution sequence should determine that the implementation process without tackling the embodiment of the present invention forms any limit with its function and internal logic
It is fixed.
Corresponding to bypass diode detection method in the photovoltaic module of foregoing embodiments, Fig. 4 carries for one embodiment of the invention
The structured flowchart of bypass diode detecting system, photovoltaic module include the battery list of multiple series connection in a kind of photovoltaic module supplied
Member, each battery unit and a bypass diode reverse parallel connection, the system include：Measurement voltage value module 401,
Power on module 402, measurement module 403, the first determining module 404, the second determining module 405.
Wherein, voltage value module 401 is measured, the quantity for the bypass diode in the photovoltaic module is set
The measurement magnitude of voltage of location survey amount power supply.
Power on module 402, for the positive pole of the measurement power supply to be connected to the negative pole of the photovoltaic module, the survey
The negative pole for measuring power supply connects the positive pole of the photovoltaic module.
Measurement module 403, for measuring the current value of the photovoltaic module.
First determining module 404, for when the current value of the photovoltaic module is in the first pre-set current value scope, judging
The equal normal work of all bypass diodes of the photovoltaic module.
Second determining module 405, the current value for the photovoltaic module judge institute in the second pre-set current value scope
State at least one bypass diode in photovoltaic module and open circuit occurs.
It was found from above-described embodiment, the survey of power supply is measured by the quantity set of the bypass diode in photovoltaic module
Measure magnitude of voltage；The positive pole for measuring power supply is connected to the negative pole of photovoltaic module, the negative pole for measuring power supply is being connected into photovoltaic module just
Pole；Measure the current value of photovoltaic module；When the current value of photovoltaic module is in the first pre-set current value scope, photovoltaic module is judged
The equal normal work of all bypass diodes；When the current value of photovoltaic module is in the second pre-set current value scope, photovoltaic is judged
Open circuit occurs at least one bypass diode in component.The embodiment of the present invention can break to bypass diode in photovoltaic module
Road is detected, and can be achieved to bypass diode complete detection, to improve the accuracy of detection.
In one embodiment of the invention, on the basis of above-described embodiment, with reference to figure 4, the system also includes：Survey
Measure magnitude of voltage increase module 406, acquisition module 407, the 3rd determining module 408.
Magnitude of voltage increase module 406 is measured, for the measurement magnitude of voltage to be increased into preset voltage value, the default electricity
Pressure value is the voltage for making the battery unit in parallel with the bypass diode that open circuit occurs that reverse bias occur；
Acquisition module 407, obtain the infrared image of each battery unit in the photovoltaic module；
3rd determining module 408, for the battery unit according to heating, determine that the bypass of open circuit occurs for the photovoltaic module
Diode.
In one embodiment of the invention, on the basis of above-described embodiment, first preset range value is 0.1A
To 4A.
In one embodiment of the invention, on the basis of above-described embodiment, second preset range be 0A extremely
0.1A。
In one embodiment of the invention, on the basis of above-described embodiment, with reference to figure 4, voltage value mould is measured
Block 401, including：
Minimum value determining unit 4011, for the quantity of the bypass diode in the photovoltaic module and a side
The forward conduction voltage of road diode, it is determined that the minimum value of measurement magnitude of voltage；
Maximum occurrences determining unit 4012, for the breakdown according to battery unit in the minimum value and the photovoltaic module
Magnitude of voltage, it is determined that the maximum of measurement magnitude of voltage；
Magnitude of voltage determining unit 4013 is measured, for according to the minimum value and the maximum, determining the measurement electricity
Pressure value.
Referring to Fig. 5, Fig. 5 is the terminal of bypass diode detecting system in a kind of photovoltaic module provided in an embodiment of the present invention
The schematic block diagram of equipment.Terminal 500 in the present embodiment as shown in Figure 5 can include：One or more processors 501, one
Individual or multiple input equipments 502, one or more then output equipment 503 and one or more memories 504.Above-mentioned processor
501st, input equipment 502, then output equipment 503 and memory 504 complete mutual communication by communication bus 505.Storage
Device 504 is used to store computer program, and the computer program includes programmed instruction.Processor 501 is used to perform memory 504
The programmed instruction of storage.Wherein, processor 501 is arranged to call described program instruction to perform following operate：
Processor 501, the quantity set for the bypass diode in the photovoltaic module measure the measurement of power supply
Magnitude of voltage；The positive pole of the measurement power supply is connected to the negative pole of the photovoltaic module, the negative pole of the measurement power supply is connected into institute
State the positive pole of photovoltaic module；Measure the current value of the photovoltaic module；When the current value of the photovoltaic module is in the first default electricity
During flow valuve scope, the equal normal work of all bypass diodes of the photovoltaic module is judged；When the current value of the photovoltaic module
In the second pre-set current value scope, judge that open circuit occurs at least one bypass diode in the photovoltaic module.
Further, processor 501, it is additionally operable to the measurement magnitude of voltage increasing to preset voltage value, the default electricity
Pressure value is the voltage for making the battery unit in parallel with the bypass diode that open circuit occurs that reverse bias occur；Obtain the photovoltaic group
The infrared image of each battery unit in part；Determine that the pole of bypass two of open circuit occurs for the photovoltaic module according to the infrared image
Pipe.
Further, first preset range value is 0.1A to 4A.
Further, second preset range is 0A to 0.1A.
Further, processor 501, the quantity for the bypass diode being additionally operable in the photovoltaic module and a side
The forward conduction voltage of road diode, it is determined that the minimum value of measurement magnitude of voltage；According in the minimum value and the photovoltaic module
The breakdown voltage value of battery unit, it is determined that the maximum of measurement magnitude of voltage；According to the minimum value and the maximum, institute is determined
State measurement magnitude of voltage.
It should be appreciated that in embodiments of the present invention, alleged processor 501 can be CPU (Central
Processing Unit, CPU), the processor can also be other general processors, digital signal processor (Digital
Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit,
ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other FPGAs
Device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or this at
It can also be any conventional processor etc. to manage device.
Input equipment 502 can include Trackpad, fingerprint adopt sensor (finger print information that is used to gathering user and fingerprint
Directional information), microphone etc., output equipment 503 can include display (LCD etc.), loudspeaker etc..
The memory 504 can include read-only storage and random access memory, and to processor 501 provide instruction and
Data.The a part of of memory 504 can also include nonvolatile RAM.For example, memory 504 can also be deposited
Store up the information of device type.
In the specific implementation, processor 501, input equipment 502, the output equipment 503 described in the embodiment of the present invention can
The implementation described in the first embodiment and second embodiment of service request method provided in an embodiment of the present invention is performed,
Also the implementation of the terminal described by the embodiment of the present invention is can perform, will not be repeated here.
A kind of computer-readable recording medium, the computer-readable storage medium are provided in another embodiment of the invention
Matter is stored with computer program, and the computer program includes programmed instruction, and described program instruction is realized when being executed by processor
All or part of flow in above-described embodiment method, by computer program the hardware of correlation can also be instructed to complete,
Described computer program can be stored in a computer-readable recording medium, the computer program when being executed by processor,
The step of above-mentioned each embodiment of the method can be achieved..Wherein, the computer program includes computer program code, the meter
Calculation machine program code can be source code form, object identification code form, executable file or some intermediate forms etc..The calculating
Machine computer-readable recording medium can include：Any entity or device of the computer program code, recording medium, USB flash disk, shifting can be carried
Dynamic hard disk, magnetic disc, CD, computer storage, read-only storage (ROM, Read-Only Memory), random access memory
(RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..Need what is illustrated
It is that the content that the computer-readable medium includes can be fitted according to legislation in jurisdiction and the requirement of patent practice
When increase and decrease, such as in some jurisdictions, according to legislation and patent practice, it is electric carrier wave that computer-readable medium, which does not include,
Signal and telecommunication signal.
The computer-readable recording medium can be the internal storage unit of the terminal described in foregoing any embodiment, example
Such as the hard disk or internal memory of terminal.The computer-readable recording medium can also be the External memory equipment of the terminal, such as
The plug-in type hard disk being equipped with the terminal, intelligent memory card (Smart Media Card, SMC), secure digital (Secure
Digital, SD) card, flash card (Flash Card) etc..Further, the computer-readable recording medium can also be wrapped both
Including the internal storage unit of the terminal also includes External memory equipment.The computer-readable recording medium is described for storing
Other programs and data needed for computer program and the terminal.The computer-readable recording medium can be also used for temporarily
The data that ground storage has been exported or will exported.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, the composition and step of each example are generally described according to function in the above description.This
A little functions are performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specially
Industry technical staff can realize described function using distinct methods to each specific application, but this realization is not
It is considered as beyond the scope of this invention.
It is apparent to those skilled in the art that for convenience of description and succinctly, the end of foregoing description
End and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed terminal and method, it can be passed through
Its mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, only
Only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.In addition, shown or discussed phase
Coupling or direct-coupling or communication connection between mutually can be INDIRECT COUPLING or the communication by some interfaces, device or unit
Connection or electricity, the connection of mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize scheme of the embodiment of the present invention according to the actual needs
Purpose.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
It is that unit is individually physically present or two or more units are integrated in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to be contributed in other words to prior art, or all or part of the technical scheme can be in the form of software product
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the present invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain be defined.
Claims (10)
1. bypass diode detection method in a kind of photovoltaic module, it is characterised in that photovoltaic module includes the battery of multiple series connection
Unit, each battery unit and a bypass diode reverse parallel connection, methods described include：
The measurement magnitude of voltage of the quantity set measurement power supply of bypass diode in the photovoltaic module；
The positive pole of the measurement power supply is connected to the negative pole of the photovoltaic module, the negative pole of the measurement power supply is connected into the light
Lie prostrate the positive pole of component；
Measure the current value of the photovoltaic module；
When the current value of the photovoltaic module is in the first pre-set current value scope, all bypasses two of the photovoltaic module are judged
The equal normal work of pole pipe；
When the current value of the photovoltaic module is in the second pre-set current value scope, at least one in the photovoltaic module is judged
Open circuit occurs for bypass diode.
2. bypass diode detection method in photovoltaic module according to claim 1, it is characterised in that also include：
The measurement magnitude of voltage is increased into preset voltage value, the preset voltage value is to make the bypass diode with open circuit occurs
The voltage of reverse bias occurs for battery unit in parallel；
Obtain the infrared image of each battery unit in the photovoltaic module；
Determine that the bypass diode of open circuit occurs for the photovoltaic module according to the infrared image.
3. bypass diode detection method in photovoltaic module according to claim 1, it is characterised in that described first is default
Current value range is 0.1A to 4A.
4. bypass diode detection method in photovoltaic module according to claim 1, it is characterised in that described second is default
Current value range is 0A to 0.1A.
5. bypass diode detection method in photovoltaic module according to claim 1, it is characterised in that described in the basis
The measurement magnitude of voltage of the quantity set measurement power supply of bypass diode in photovoltaic module includes：
The forward conduction voltage of the quantity of bypass diode in the photovoltaic module and a bypass diode, it is determined that surveying
Measure the minimum value of magnitude of voltage；
According to the breakdown voltage value of battery unit in the minimum value and the photovoltaic module, it is determined that the maximum of measurement magnitude of voltage
Value；
According to the minimum value and the maximum, the measurement magnitude of voltage is determined.
6. bypass diode detecting system in a kind of photovoltaic module, it is characterised in that photovoltaic module includes the battery of multiple series connection
Unit, each battery unit and a bypass diode reverse parallel connection, the system include：
Voltage value module is measured, the quantity set for the bypass diode in the photovoltaic module measures power supply
Measure magnitude of voltage；
Power on module, for the positive pole of the measurement power supply to be connected to the negative pole of the photovoltaic module, the measurement power supply
Negative pole connect the positive pole of the photovoltaic module；
Measurement module, for measuring the current value of the photovoltaic module；
First determining module, for when the current value of the photovoltaic module is in the first pre-set current value scope, judging the light
Lie prostrate the equal normal work of all bypass diodes of component；
Second determining module, the current value for the photovoltaic module judge the photovoltaic in the second pre-set current value scope
Open circuit occurs at least one bypass diode in component.
7. bypass diode detecting system in photovoltaic module according to claim 6, it is characterised in that also include：
Magnitude of voltage increase module is measured, for the measurement magnitude of voltage to be increased into preset voltage value, the preset voltage value is
Make the battery unit in parallel with the bypass diode that open circuit occurs that the voltage of reverse bias occur；
Acquisition module, obtain the infrared image of each battery unit in the photovoltaic module；
3rd determining module, for determining that the bypass diode of open circuit occurs for the photovoltaic module according to the infrared image.
8. bypass diode detecting system in photovoltaic module according to claim 6, it is characterised in that described first is default
Value range is 0.1A to 4A.
9. bypass diode detecting system in photovoltaic module according to claim 6, it is characterised in that described second is default
Scope is 0A to 0.1A.
10. bypass diode detecting system in photovoltaic module according to claim 6, it is characterised in that the measurement electricity
Pressure value setting module, including：
Minimum value determining unit, for the quantity of the bypass diode in the photovoltaic module and a bypass diode
Forward conduction voltage, it is determined that measurement magnitude of voltage minimum value；
Maximum occurrences determining unit, for the breakdown voltage value according to battery unit in the minimum value and the photovoltaic module,
It is determined that the maximum of measurement magnitude of voltage；
Magnitude of voltage determining unit is measured, for according to the minimum value and the maximum, determining the measurement magnitude of voltage.
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| CN201710652820.2A CN107462800A (en) | 2017-08-02 | 2017-08-02 | Bypass diode detection method and system in photovoltaic module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008309A (en) * | 2018-03-05 | 2018-05-08 | 无锡南理工新能源电动车科技发展有限公司 | A kind of battery pack bypass diode Online Transaction Processing |
| CN108333495A (en) * | 2018-03-01 | 2018-07-27 | 国家电投集团西安太阳能电力有限公司 | A kind of bypass diode working state detecting method of photovoltaic component terminal box |
| JP2020162324A (en) * | 2019-03-27 | 2020-10-01 | Ｎｅｃスペーステクノロジー株式会社 | Inspection device and inspection method |
| CN113675892A (en) * | 2021-09-27 | 2021-11-19 | 阳光电源股份有限公司 | Photovoltaic power generation system, control method thereof and power converter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001024204A (en) * | 1999-07-06 | 2001-01-26 | Canon Inc | Apparatus and method for inspection of solar cell module |
| CN101939660A (en) * | 2008-02-11 | 2011-01-05 | 西门子公司 | Method for recognizing the theft of a pv module and a failure of a bypass diode of a pv module, corresponding pv sub-generator junction box, pv inverter, and corresponding pv system |
| CN202166729U (en) * | 2011-03-14 | 2012-03-14 | 无锡英臻科技有限公司 | State real-time monitoring module of embedded solar photovoltaic assembly |
| JP2014011428A (en) * | 2012-07-03 | 2014-01-20 | Jx Nippon Oil & Energy Corp | Failure detection device, failure detection system, and failure detection method |
| CN104391189A (en) * | 2014-10-13 | 2015-03-04 | 合肥工业大学 | Three-stage-diagnosis-based large-scale photovoltaic array fault diagnosis and positioning method |
| CN205826808U (en) * | 2016-05-05 | 2016-12-21 | 阿特斯(中国)投资有限公司 | The bypass diode test device of photovoltaic module |
-
2017
- 2017-08-02 CN CN201710652820.2A patent/CN107462800A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001024204A (en) * | 1999-07-06 | 2001-01-26 | Canon Inc | Apparatus and method for inspection of solar cell module |
| CN101939660A (en) * | 2008-02-11 | 2011-01-05 | 西门子公司 | Method for recognizing the theft of a pv module and a failure of a bypass diode of a pv module, corresponding pv sub-generator junction box, pv inverter, and corresponding pv system |
| CN202166729U (en) * | 2011-03-14 | 2012-03-14 | 无锡英臻科技有限公司 | State real-time monitoring module of embedded solar photovoltaic assembly |
| JP2014011428A (en) * | 2012-07-03 | 2014-01-20 | Jx Nippon Oil & Energy Corp | Failure detection device, failure detection system, and failure detection method |
| CN104391189A (en) * | 2014-10-13 | 2015-03-04 | 合肥工业大学 | Three-stage-diagnosis-based large-scale photovoltaic array fault diagnosis and positioning method |
| CN205826808U (en) * | 2016-05-05 | 2016-12-21 | 阿特斯(中国)投资有限公司 | The bypass diode test device of photovoltaic module |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333495A (en) * | 2018-03-01 | 2018-07-27 | 国家电投集团西安太阳能电力有限公司 | A kind of bypass diode working state detecting method of photovoltaic component terminal box |
| CN108333495B (en) * | 2018-03-01 | 2020-11-03 | 国家电投集团西安太阳能电力有限公司 | Method for detecting working state of bypass diode of photovoltaic module junction box |
| CN108008309A (en) * | 2018-03-05 | 2018-05-08 | 无锡南理工新能源电动车科技发展有限公司 | A kind of battery pack bypass diode Online Transaction Processing |
| JP2020162324A (en) * | 2019-03-27 | 2020-10-01 | Ｎｅｃスペーステクノロジー株式会社 | Inspection device and inspection method |
| JP7244069B2 (en) | 2019-03-27 | 2023-03-22 | Ｎｅｃスペーステクノロジー株式会社 | Inspection device and inspection method |
| CN113675892A (en) * | 2021-09-27 | 2021-11-19 | 阳光电源股份有限公司 | Photovoltaic power generation system, control method thereof and power converter |
| CN113675892B (en) * | 2021-09-27 | 2024-05-14 | 阳光电源股份有限公司 | Photovoltaic power generation system, control method thereof and power converter |
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