CN204089717U - A kind of on-off control circuit of solar panel - Google Patents
A kind of on-off control circuit of solar panel Download PDFInfo
- Publication number
- CN204089717U CN204089717U CN201420364032.5U CN201420364032U CN204089717U CN 204089717 U CN204089717 U CN 204089717U CN 201420364032 U CN201420364032 U CN 201420364032U CN 204089717 U CN204089717 U CN 204089717U
- Authority
- CN
- China
- Prior art keywords
- solar panel
- relay
- power tube
- control circuit
- mechanical contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 3
- 238000012163 sequencing technique Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- 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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- Control Of Electrical Variables (AREA)
Abstract
The utility model discloses a kind of on-off control circuit of solar panel, comprise power tube and relay, described power tube have the output current for exporting solar panel source electrode, for input the output current of solar panel drain electrode and with the grid for receiving external power pipe conductivity control signal, relay has mechanical contact and the coil for receiving outside relay conductivity control signal, and described mechanical contact is connected between source electrode and drain electrode.Conducting efficiency of the present utility model is high, and the life-span is long, cost is low.
Description
Technical field
The utility model relates to power control circuit, is specifically related to a kind of on-off control circuit of solar panel.
Background technology
In solar power system, according to application scheme, often need the control output of solar panel being carried out to break-make, prior art generally realizes in the following manner:
Mode one: directly use air switch or circuit breaker.Its defect is: can only manual operation, and to automatically controlled, need separately to add motor-operating mechanism, cost is very high.
Mode two: use and entirely control power device.Its defect is: power device exists conduction voltage drop, reduces the utilance of solar energy.
Mode three: use relay or contactor.Its defect is: the output of solar panel is direct current, and must select direct current relay or contactor in mesohigh application scenario, cost is high.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is the on-off control circuit providing a kind of solar panel, and its conducting efficiency is high, and the life-span is long, cost is low.
The purpose of this utility model adopts following technical scheme to realize:
A kind of on-off control circuit of solar panel, comprise power tube and relay, described power tube have the output current for exporting solar panel source electrode, for input the output current of solar panel drain electrode and with the grid for receiving external power pipe conductivity control signal, relay has mechanical contact and the coil for receiving outside relay conductivity control signal, and described mechanical contact is connected between source electrode and drain electrode.
On the basis of the above, the utility model can do following improvement:
Described mechanical contact is normally opened contact.
Described power tube is IGBT pipe or metal-oxide-semiconductor.
Compared to existing technology, the beneficial effects of the utility model are:
The utility model is connected in parallel due to relay and power tube.By controlling the priority of power tube conductivity control signal, relay conductivity control signal, during the contact action of relay, power tube can remain on conducting state always, therefore, voltage between relay contact is 0 substantially, and also just there is not the phenomenon of direct current arcing, this just greatly reduces the requirement of this circuit to relay, cheap low-voltage alternating-current relay can be selected, greatly reduce costs.And due to relay be mechanical contact, its conducting resistance is far smaller than power tube, therefore except in short relay contact operate time, the output current of solar panel is from power tube flows through, all the other times are all flow through from the contact of relay, conducting efficiency is high, and the life-span is long, therefore substantially increases the utilization ratio of solar cell.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the on-off control circuit of a kind of solar panel of the utility model.
Embodiment
The on-off control circuit of a kind of solar panel as shown in Figure 1, comprise power tube Q and relay K 1, power tube Q have the output current for exporting solar panel source S, for input the output current of solar panel drain D and with the grid G for receiving external power pipe conductivity control signal, relay K 1 has mechanical contact L and the coil for receiving outside relay conductivity control signal, and mechanical contact L is connected between source S and drain D.
The mechanical contact L of this example is normally opened contact.Power tube Q is IGBT pipe, and metal-oxide-semiconductor etc. also can be adopted entirely to control power device.Relay K 1 does not need to use expensive high voltage direct current relay, selects common low-voltage alternating-current relay.
By the control circuit of outside, can by power tube conductivity control signal, relay conductivity control signal send opportunity, sequencing is arranged.This opportunity, sequencing are set to as follows by this example:
When this circuit turn-on of needs, external control circuit sends the grid G of power tube conductivity control signal to power tube Q, the first conducting of power tube Q; And then sending the coil of relay conductivity control signal to relay K 1, relay K 1 adhesive, mechanical contact L engages conducting.
When this circuit of needs disconnects, external control circuit first cancels relay K 1 conductivity control signal, and relay K 1 disconnects, and mechanical contact L disconnects; Wait for a period of time, after ensureing that mechanical contact L completely reliably disconnects, then cancel power tube conductivity control signal, power tube Q ends.
Because relay K 1 and power tube Q are connected in parallel.During the joint or disconnection action of mechanical contact L, power tube Q remains on conducting state always.Therefore, the voltage between mechanical contact L is 0 substantially, and also just there is not the phenomenon of direct current arcing, this just greatly reduces the requirement of relay K 1, can select cheap low-voltage alternating-current relay.And due to relay K 1 be mechanical contact L, its conducting resistance is far smaller than power tube Q, therefore except in short mechanical contact L operate time, the output current of solar panel is from power tube Q flows through, all the other times are all flow through from mechanical contact L, therefore substantially increase the utilization ratio of solar cell.
Above-mentioned execution mode is only preferred implementation of the present utility model; can not limit the scope of the utility model protection with this, change and the replacement of any unsubstantiality that those skilled in the art does on basis of the present utility model all belong to the utility model scope required for protection.
Claims (3)
1. the on-off control circuit of a solar panel, it is characterized in that: comprise power tube and relay, described power tube have the output current for exporting solar panel source electrode, for input the output current of solar panel drain electrode and with the grid for receiving external power pipe conductivity control signal, relay has mechanical contact and the coil for receiving outside relay conductivity control signal, and described mechanical contact is connected between source electrode and drain electrode.
2. the on-off control circuit of solar panel according to claim 1, is characterized in that: described mechanical contact is normally opened contact.
3. the on-off control circuit of solar panel according to claim 1 and 2, is characterized in that: described power tube is IGBT pipe or metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364032.5U CN204089717U (en) | 2014-07-02 | 2014-07-02 | A kind of on-off control circuit of solar panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364032.5U CN204089717U (en) | 2014-07-02 | 2014-07-02 | A kind of on-off control circuit of solar panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089717U true CN204089717U (en) | 2015-01-07 |
Family
ID=52182383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364032.5U Expired - Lifetime CN204089717U (en) | 2014-07-02 | 2014-07-02 | A kind of on-off control circuit of solar panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204089717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576613A (en) * | 2015-12-25 | 2016-05-11 | 苏州聚晟太阳能科技股份有限公司 | Relay driving device |
-
2014
- 2014-07-02 CN CN201420364032.5U patent/CN204089717U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576613A (en) * | 2015-12-25 | 2016-05-11 | 苏州聚晟太阳能科技股份有限公司 | Relay driving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |