CN103633704A - Photovoltaic charge circuit preventing PV reverse connection and providing improved charging efficiency - Google Patents
Photovoltaic charge circuit preventing PV reverse connection and providing improved charging efficiency Download PDFInfo
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- CN103633704A CN103633704A CN201310663666.0A CN201310663666A CN103633704A CN 103633704 A CN103633704 A CN 103633704A CN 201310663666 A CN201310663666 A CN 201310663666A CN 103633704 A CN103633704 A CN 103633704A
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- relay
- diode
- photovoltaic charge
- charge circuit
- charging efficiency
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a photovoltaic charge circuit preventing PV reverse connection and providing improved charging efficiency. The photovoltaic charge circuit is characterized in that a diode D1 preventing PV reverse connection and a relay K1 are parallelly connected and are serially connected to the photovoltaic charge circuit. The structure of the diode D1 and the relay K1 in parallel connection is adopted; when photovoltaic charge power is lower than a preset charge power value at night or in cloudy days, the relay K1 breaks to allow current to pass the diode D1 so that frequent switching of the relay is prevented; when the photovoltaic charge power reaches the preset charge power value in sunny days, the relay K1 closes, the diode D1 shorts, and accordingly, diode loss under high power is avoided and charging efficiency is improved.
Description
Technical field
The present invention relates to a kind of charging circuit technical field, specifically a kind of photovoltaic charged circuit that prevents PV reversal connection.
Background technology
Solar charger need to have anti-reverse function, in porch, need to add counnter attack diode, and when charge power is very large, counnter attack diode losses also increases, and needs on the one hand to increase heat radiation cost, has reduced greatly on the other hand the efficiency of solar charger; Adopt separately relay, when when low-power, solar charger judges inadequate energy charging, charger is by block system relay, and after block system relay, PV voltage raises, and charger is attracting electric relay again, reworks, and the work going round and beginning again is not like this until PV has electricity.The present invention has avoided relay when low-power frequently to switch, and has also avoided the problem of diode losses under high-power state.
Summary of the invention
The object of this invention is to provide a kind of frequent photovoltaic charged circuit that prevents PV reversal connection and raising charge efficiency switching of relay that prevented.
For achieving the above object, the technical solution adopted in the present invention is:
The photovoltaic charged circuit that prevents PV reversal connection and raising charge efficiency, is characterized in that: in described photovoltaic charged circuit, be serially connected with the diode D1 that prevents PV reversal connection and relay K 1 in parallel.
Described relay K 1, in order to default charge power value to be set, when when becoming a fine day, when photovoltaic charged power reaches default charge power value, relay K 1 adhesive, by diode D1 short circuit; When at night or when cloudy day, photovoltaic charged power is during lower than default charge power value, and relay K 1 disconnects, and electric current is passed through from diode D1.
Beneficial effect of the present invention: owing to adopting the diode D1 of above-mentioned parallel connection and the version of relay K 1, when at night or when cloudy day, photovoltaic charged power is during lower than default charge power value, relay K 1 disconnects, make electric current from diode D1 process, thereby prevented the frequent problem of switching of relay; When becoming a fine day, when photovoltaic charged power reaches default charge power value, relay K 1 adhesive by diode D1 short circuit, with regard to having avoided the problem of diode losses under high-power state, has improved charge efficiency so simultaneously.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is electrical schematic diagram of the present invention.
Embodiment
As shown in Figure 1, prevent the photovoltaic charged circuit of PV reversal connection and raising charge efficiency, in described photovoltaic charged circuit, be serially connected with the diode D1 that prevents PV reversal connection and relay K 1 in parallel.
Described relay K 1, in order to default charge power value to be set, when when becoming a fine day, when photovoltaic charged power reaches default charge power value, relay K 1 adhesive, by diode D1 short circuit; When at night or when cloudy day, photovoltaic charged power is during lower than default charge power value, and relay K 1 disconnects, and electric current is passed through from diode D1.
The above is the preferred embodiment of the present invention; certainly can not limit with this interest field of the present invention; should be understood that; for those skilled in the art; technical scheme of the present invention is modified or is equal to replacement, do not depart from the protection range of technical solution of the present invention.
Claims (2)
1. a photovoltaic charged circuit that prevents PV reversal connection and raising charge efficiency, is characterized in that: in described photovoltaic charged circuit, be serially connected with the diode D1 that prevents PV reversal connection and relay K 1 in parallel.
2. the photovoltaic charged circuit that prevents PV reversal connection and improve charge efficiency according to claim 1, it is characterized in that: described relay K 1, in order to default charge power value to be set, when photovoltaic charged power reaches default charge power value, relay K 1 adhesive, by diode D1 short circuit; When photovoltaic charged power is during lower than default charge power value, relay K 1 disconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663666.0A CN103633704B (en) | 2013-12-10 | 2013-12-10 | Prevent the photovoltaic charged circuit of PV reversal connection and raising charge efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663666.0A CN103633704B (en) | 2013-12-10 | 2013-12-10 | Prevent the photovoltaic charged circuit of PV reversal connection and raising charge efficiency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103633704A true CN103633704A (en) | 2014-03-12 |
| CN103633704B CN103633704B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310663666.0A Active CN103633704B (en) | 2013-12-10 | 2013-12-10 | Prevent the photovoltaic charged circuit of PV reversal connection and raising charge efficiency |
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| CN (1) | CN103633704B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002612A (en) * | 2021-10-26 | 2022-02-01 | 珠海格力电器股份有限公司 | Reverse connection detection circuit and method and power supply system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201393327Y (en) * | 2009-04-23 | 2010-01-27 | 青海新能源(集团)有限公司 | Commercial power supplementing type photovoltaic double-line illumination controlling device in extremely cold area |
| CN102756655A (en) * | 2012-07-11 | 2012-10-31 | 合肥华耀电子工业有限公司 | Novel input reverse-connection-preventing circuit |
| CN203787982U (en) * | 2013-12-10 | 2014-08-20 | 惠州天能源科技有限公司 | Photovoltaic charging circuit preventing PV inversed connection and improving charging efficiency |
-
2013
- 2013-12-10 CN CN201310663666.0A patent/CN103633704B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201393327Y (en) * | 2009-04-23 | 2010-01-27 | 青海新能源(集团)有限公司 | Commercial power supplementing type photovoltaic double-line illumination controlling device in extremely cold area |
| CN102756655A (en) * | 2012-07-11 | 2012-10-31 | 合肥华耀电子工业有限公司 | Novel input reverse-connection-preventing circuit |
| CN203787982U (en) * | 2013-12-10 | 2014-08-20 | 惠州天能源科技有限公司 | Photovoltaic charging circuit preventing PV inversed connection and improving charging efficiency |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002612A (en) * | 2021-10-26 | 2022-02-01 | 珠海格力电器股份有限公司 | Reverse connection detection circuit and method and power supply system |
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| Publication number | Publication date |
|---|---|
| CN103633704B (en) | 2016-04-13 |
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Free format text: FORMER OWNER: TIANBAO ELECTRONIC (HUIZHOU) CO., LTD. Effective date: 20150518 |
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Effective date of registration: 20150518 Address after: 516005 Dongjiang Industrial Zone, Shuikou subdistrict, Huicheng District, Guangdong, Huizhou Applicant after: HUIZHOU TEN SOURCES SOLAR ELECTRICITY LIMITED Address before: 516005 Dongjiang Industrial Zone, Shuikou subdistrict, Huicheng District, Guangdong, Huizhou Applicant before: HUIZHOU TEN SOURCES SOLAR ELECTRICITY LIMITED Applicant before: Ten Pao Electronics (Huizhou) Co., Ltd. |
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