CN207995026U - Circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding - Google Patents
Circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding Download PDFInfo
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- CN207995026U CN207995026U CN201820382459.6U CN201820382459U CN207995026U CN 207995026 U CN207995026 U CN 207995026U CN 201820382459 U CN201820382459 U CN 201820382459U CN 207995026 U CN207995026 U CN 207995026U
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- photovoltaic panel
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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 utility model discloses a kind of photovoltaic panel fault detects and failure self-shileding to protect circuit, which includes optical diode L1；The light emitting diode L1With resistance R1Series connection, is finally connected in parallel on the both ends of failure photovoltaic panel；The circuit further includes light emitting diode L2Or light emitting diode L3, light emitting diode L2With regulation resistance R3After series connection with diode D1Then parallel connection is connected in parallel on solar energy photovoltaic panel both ends.Or light emitting diode L3With resistance R4After parallel connection with diode D2Series connection, is then connected in parallel on failure photovoltaic panel both ends.The utility model is while detection is out of order, it is also ensured that the photovoltaic panel being in series with the failure photovoltaic panel being capable of normal use.During manually photovoltaic panel is overhauled or replaced, photovoltaic panel series arm normal work improves artificial detection speed and working efficiency.
Description
Technical field
The utility model belongs to technical field of circuit design, specifically, being related to a kind of photovoltaic panel fault detect and failure
Circuit is protected in self-shileding.
Background technology
Solar cell module is combined with certain arrangement mode, is used to generate electricity in order to preferably acquire luminous energy,
Improve the efficiency of light energy utilization.Common permutation and combination method is the series and parallel structure of each photovoltaic panel, when some in a series arm
Photovoltaic panel breaks down, and failure cause may be photovoltaic module itself damage or photovoltaic panel caused by prolonged use
Hot spot effect.Failure photovoltaic panel in such cases is equivalent to big resistance states, and with this condition, the series arm is other not to be gone out
The photovoltaic panel of existing failure cannot be worked normally by series loop, and optical energy utilization efficiency reduces.
Utility model content
In view of this, the utility model provides a kind of photovoltaic panel fault detect and failure self-shileding protection circuit, this reality
Ensure detecting that a certain photovoltaic panel is concatenated other with the failure photovoltaic panel institute there are while failure, nor affecting on novel
The normal use of photovoltaic panel.
In order to solve the above-mentioned technical problem, the utility model discloses a kind of photovoltaic panel fault detects and failure self-shileding to protect
Protection circuit, including light emitting diode L1, fixed resistance R1, diode D1, light emitting diode L2With current-limiting resistance R3；Described luminous two
Pole pipe L1With resistance R1Series connection, is finally connected in parallel on the both ends of failure photovoltaic panel；The light emitting diode L2With regulation resistance R3Series connection
Afterwards with diode D1Then parallel connection is connected in parallel on solar energy photovoltaic panel both ends.
Optionally, the light emitting diode L1With adjustable resistance R2After in parallel with resistance R1Series connection.
Optionally, the light emitting diode L1With light emitting diode L2The color of the light sent out is different.
The utility model discloses a kind of photovoltaic panel fault detects and failure self-shileding to protect circuit, including light emitting diode
L1, fixed resistance R1, adjustable resistor R2, diode D2, light emitting diode L3With resistance R4；The light emitting diode L1With resistance
R1Series connection, is finally connected in parallel on the both ends of failure photovoltaic panel；The light emitting diode L3With resistance R4After parallel connection with diode D2String
Connection, is then connected in parallel on failure photovoltaic panel both ends.
Optionally, the light emitting diode L1With adjustable resistance R2After in parallel with resistance R1Series connection.
Optionally, the light emitting diode L1With light emitting diode L3The color of the light sent out is different.
Compared with prior art, the utility model can be obtained including following technique effect：
1) the utility model can detect that there are the photovoltaic panels of failure and the branch by the luminous situation of light emitting diode
Road working condition.
2) while detection is out of order, it is also ensured that the photovoltaic panel being in series with the failure photovoltaic panel can normally make
With.During manually photovoltaic panel is overhauled or replaced, photovoltaic panel series arm normal work improves artificial detection
Speed and working efficiency.
Certainly, implement any product of the utility model it is not absolutely required to and meanwhile reach all the above technology effect
Fruit.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is 1 photovoltaic panel fault detect of the utility model embodiment and failure self-shileding circuital current flow graph；
Fig. 2 is 2 photovoltaic panel fault detect of the utility model embodiment and failure self-shileding circuital current flow graph.
Specific implementation mode
The embodiment of the utility model is described in detail below in conjunction with embodiment, thereby how the utility model is answered
It solves technical problem and reaches the realization process of technical effect to fully understand and implement with technological means.
The utility model discloses a kind of photovoltaic panel fault detects and failure self-shileding to protect circuit, as shown in Figure 1, including
Light emitting diode L1, fixed resistance R1, diode D1, light emitting diode L2With current-limiting resistance R3；The light emitting diode L1With electricity
Hinder R1Series connection, is finally connected in parallel on the both ends of failure photovoltaic panel；The light emitting diode L2With regulation resistance R3After series connection with diode
D1Then parallel connection is connected in parallel on solar energy photovoltaic panel both ends.
Wherein, fixed resistance R1Effect be current limliting, prevent electric current excessive and lead to light emitting diode L1Damage, current limliting electricity
Hinder R3Effect be also current limliting, prevent light emitting diode L2Because flow through electric current it is excessive due to damage.
Optionally, the light emitting diode L1With adjustable resistance R2After in parallel with resistance R1Series connection.
Optionally, the light emitting diode L1With light emitting diode L2The color of the light sent out is different.
The invention also discloses a kind of photovoltaic panel fault detects and failure self-shileding to protect circuit, as shown in Fig. 2, packet
Include light emitting diode L1, fixed resistance R1, adjustable resistor R2, diode D2, light emitting diode L3With resistance R4；Described luminous two
Pole pipe L1With resistance R1Series connection, is finally connected in parallel on the both ends of failure photovoltaic panel；The light emitting diode L3With resistance R4After parallel connection with
Diode D2Series connection, is then connected in parallel on failure photovoltaic panel both ends.
Wherein, fixed resistance R1Effect be current limliting, if tested photovoltaic panel is failure photovoltaic panel, electric current is mainly through resistance R4
It flows through, flows through light emitting diode L3The electric current of place branch is smaller, resistance R4For light emitting diode L3Conducting voltage is provided, is flowed through
Resistance R4Electric current it is bigger, light emitting diode L3Brightness is higher.
Optionally, the light emitting diode L1With adjustable resistance R2After in parallel with resistance R1Series connection.
Optionally, the light emitting diode L1With light emitting diode L3The color of the light sent out is different.
Wherein, diode D1Or diode D2With one-way conduction and light emitting diode L1, light emitting diode L2With
Light emitting diode L3There is smaller current to flow through irradiative property to be detected to photovoltaic panel failure.
The utility model passes through diode D1Or diode D2One-way conduction characteristic and light emitting diode L1, light-emitting diodes
Pipe L2With light emitting diode L3Be combined while detect that a certain piece of photovoltaic panel breaks down, the photovoltaic panel fault detect and
Failure self-shileding circuit can be with the photovoltaic panel of the automatic shield damage, it is ensured that other photovoltaic panels being in series with the damage photovoltaic panel
It can work normally by electric current, improve optical energy utilization efficiency.
The circuit has the function of photovoltaic panel fault masking, should when a certain photovoltaic panel of photovoltaic panel series arm breaks down
It is open-circuit condition that failure photovoltaic panel, which is equivalent to infinite-impedance, causes the electric current of photovoltaic panel before and after failure photovoltaic panel that cannot be connected to；
At this point, utilizing diode D1Or diode D2One-way conduction characteristic, electric current can pass through the photovoltaic panel fault detect and failure
Self-shileding protection circuit flows to the photovoltaic panel of next normal work.
If detected photovoltaic panel fault-free, according to diode D1Or diode D2One-way conduction characteristic it is found that shine two
Pole pipe L2Or L3Luminous, adjusting adjustable resistance R cannot be connected2Make L1The voltage drop at both ends meets L1Forward conduction voltage, this
When light emitting diode L1Continue normal luminous, and the bright-dark degree of light emission luminance and to flow through detected photovoltaic panel current related, flows
The electric current for crossing detected photovoltaic panel is bigger, then light emitting diode is brighter.
The circuit structure and operation principle are simple, high with the presence or absence of the detection accuracy of failure to photovoltaic panel, and circuit institute
Need main components such as diode, light emitting diode etc. cheap durable, therefore the photovoltaic panel fault detect and failure are certainly
Shielding protection circuit production is at low cost.
Embodiment 1
Circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding, as shown in Figure 1, including light emitting diode L1, it is solid
Determine resistance R1, diode D1, light emitting diode L2With current-limiting resistance R3；The light emitting diode L1With adjustable resistance R2After parallel connection
With resistance R1Series connection, is finally connected in parallel on the both ends of failure photovoltaic panel；The light emitting diode L2With regulation resistance R3With two after series connection
Pole pipe D1Then parallel connection is connected in parallel on solar energy photovoltaic panel both ends.
Solar energy photovoltaic panel circuit includes the first photovoltaic panel 1, the second photovoltaic panel 2 and third photovoltaic panel 3 being sequentially connected in series；Light
It lies prostrate plate fault detect and failure self-shileding protects circuit in parallel at the both ends of the second photovoltaic panel 2.
Wherein, the second photovoltaic panel 2, third photovoltaic panel 3 and light emitting diode L1The junction of three is A nodes；
Second photovoltaic panel 2, light emitting diode L1With diode D1The junction of three is B node；
Light emitting diode L1, diode D1With current-limiting resistance R3The junction of three is C nodes；
Light emitting diode L2, diode D1With fixed resistance R1The junction of three is D nodes；
Diode D1, fixed resistance R1Junction with the second photovoltaic panel three is E nodes；
First photovoltaic panel, the second photovoltaic panel and fixed resistance R1The junction of three is F nodes；
When there are when failure for detected photovoltaic panel：Light emitting diode L2Persistently glow, light emitting diode L1Shine or
It is appropriate to adjust R2Light emitting diode L afterwards1Green light, but light emitting diode L1Luminosity can gradually extinguish, adjust R2It can make luminous two
Pole pipe L1The reason of going out after first bright is to be also possible to there is residual voltage in the second photovoltaic panel of tested photovoltaic panel 2.Arrow is hair in Fig. 1
Current flow diagrams when raw failure in the circuit, when the second photovoltaic panel 2 breaks down its own be it is that no electric current flows through or
The electric current flowed through is very small, other photovoltaic panels in the series arm are cisco unity malfunctions at this time, but accesses the light
After lying prostrate plate fault detect and failure self-shileding circuit, the electric current in third photovoltaic panel 3 out can bypass failure photovoltaic panel 2, via
A-B-C-D-E-F flows to the normal connection therewith of the first photovoltaic panel 1, makes other photovoltaic panels not broken down in the series arm
Normal work, " can so shield " the second photovoltaic panel of failure 2, ensure the solar photovoltaic utilization rate and economic benefit of photovoltaic system.If
The second detected photovoltaic panel fault-free：According to the one-way conduction characteristic of diode it is found that light emitting diode L2Hair cannot be connected
Light, at this time light emitting diode L1Continue normal luminous, and the bright-dark degree of light emission luminance has with detected photovoltaic panel electric current is flowed through
It closes, the electric current for flowing through detected photovoltaic panel is bigger, then light emitting diode is brighter.
Embodiment 2
Circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding, as shown in Fig. 2, including light emitting diode L1, it is solid
Determine resistance R1, adjustable resistor R2, diode D2, light emitting diode L3With resistance R4；The light emitting diode L1With adjustable resistance
R2After in parallel with resistance R1Series connection, is finally connected in parallel on the both ends of failure photovoltaic panel；The light emitting diode L3With resistance R4It is in parallel
Afterwards with diode D2Series connection, is then connected in parallel on failure photovoltaic panel both ends.
Wherein, the second photovoltaic panel 2, third photovoltaic panel 3 and light emitting diode L1The junction of three is a nodes；
Second photovoltaic panel 2, light emitting diode L1With diode D2The junction of three is b nodes；
Light emitting diode L1With diode D2Junction be c nodes；
Light emitting diode L3, diode D2With resistance R4The junction of three is d nodes；
Light emitting diode L3, resistance R4With fixed resistance R1The junction of three is e nodes；
First photovoltaic panel 1, the second photovoltaic panel 2 and fixed resistance R1The junction of three is f nodes；
When there are when failure for detected photovoltaic panel：Light emitting diode L3Persistently glow, light emitting diode L1Shine or
It is appropriate to adjust adjustable resistor R2Light emitting diode L afterwards1Green light, but light emitting diode L1Luminosity can gradually extinguish, adjusting can
Regulation resistance R2It can make light emitting diode L1The reason of going out after first bright is to be also possible to have in tested photovoltaic panel (the second photovoltaic panel 2)
Residual voltage.Arrow is the current flow diagrams in circuit when breaking down in Fig. 2, when the second photovoltaic panel 2 breaks down its
Itself be that electric current that is that no electric current flows through or flowing through is very small, at this time other photovoltaic panels in the series arm be cannot be just
It often works, but after the access photovoltaic panel fault detect and failure self-shileding circuit, the electric current meeting in third photovoltaic panel 3 out
Around failure photovoltaic panel (the second photovoltaic panel 2), the normal connection therewith of the first photovoltaic panel 1 is flowed to via a-b-c-d-e-f, makes the string
Other photovoltaic panel normal works not broken down in connection branch, " can so shield " failure photovoltaic panel (the second photovoltaic panel
2), ensure the solar photovoltaic utilization rate and economic benefit of photovoltaic system.If detected photovoltaic panel fault-free：According to the unidirectional of diode
On state characteristic is it is found that light emitting diode L3 cannot be connected luminous, and light emitting diode L1 continues normal luminous, and light emission luminance at this time
Bright-dark degree with flow through that detected photovoltaic panel is current related, the electric current for flowing through detected photovoltaic panel is bigger, then light emitting diode
It is brighter.
Several preferred embodiments of utility model have shown and described in above description, but as previously described, it should be understood that practical
It is novel to be not limited to form disclosed herein, it is not to be taken as excluding other embodiments, and can be used for various other
Combination, modification and environment, and above-mentioned introduction or the skill of related field can be passed through within the scope of the inventive concept described herein
Art or knowledge are modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of utility model, then
It all should be in the protection domain of utility model appended claims.
Claims (6)
1. circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding, which is characterized in that including light emitting diode L1, it is fixed
Resistance R1, diode D1, light emitting diode L2With current-limiting resistance R3；The light emitting diode L1With resistance R1Series connection, it is last in parallel
At the both ends of failure photovoltaic panel；The light emitting diode L2With regulation resistance R3After series connection with diode D1Then parallel connection is connected in parallel on
Solar energy photovoltaic panel both ends.
2. circuit is protected in photovoltaic panel fault detect according to claim 1 and failure self-shileding, which is characterized in that described
Light emitting diode L1With adjustable resistance R2After in parallel with resistance R1Series connection.
3. circuit is protected in photovoltaic panel fault detect according to claim 1 and failure self-shileding, which is characterized in that described
Light emitting diode L1With light emitting diode L2The color of the light sent out is different.
4. circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding, which is characterized in that including light emitting diode L1, it is fixed
Resistance R1, adjustable resistor R2, diode D2, light emitting diode L3With resistance R4；The light emitting diode L1With resistance R1Series connection,
Finally it is connected in parallel on the both ends of failure photovoltaic panel；The light emitting diode L3With resistance R4After parallel connection with diode D2Series connection, then simultaneously
It is associated in failure photovoltaic panel both ends.
5. circuit is protected in photovoltaic panel fault detect according to claim 4 and failure self-shileding, which is characterized in that described
Light emitting diode L1With adjustable resistance R2After in parallel with resistance R1Series connection.
6. circuit is protected in photovoltaic panel fault detect according to claim 4 and failure self-shileding, which is characterized in that described
Light emitting diode L1With light emitting diode L3The color of the light sent out is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820382459.6U CN207995026U (en) | 2018-03-21 | 2018-03-21 | Circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820382459.6U CN207995026U (en) | 2018-03-21 | 2018-03-21 | Circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding |
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| Publication Number | Publication Date |
|---|---|
| CN207995026U true CN207995026U (en) | 2018-10-19 |
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| CN201820382459.6U Active CN207995026U (en) | 2018-03-21 | 2018-03-21 | Circuit is protected in a kind of photovoltaic panel fault detect and failure self-shileding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233864A (en) * | 2018-03-21 | 2018-06-29 | 广西大学 | A kind of photovoltaic panel fault detect and failure self-shileding protection circuit and detection method |
-
2018
- 2018-03-21 CN CN201820382459.6U patent/CN207995026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233864A (en) * | 2018-03-21 | 2018-06-29 | 广西大学 | A kind of photovoltaic panel fault detect and failure self-shileding protection circuit and detection method |
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