CN203788510U - LED-drive-equipped solar street lamp controller - Google Patents
LED-drive-equipped solar street lamp controller Download PDFInfo
- Publication number
- CN203788510U CN203788510U CN201420050585.3U CN201420050585U CN203788510U CN 203788510 U CN203788510 U CN 203788510U CN 201420050585 U CN201420050585 U CN 201420050585U CN 203788510 U CN203788510 U CN 203788510U
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- circuit
- led
- field effect
- effect transistor
- drive
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- 230000005669 field effect Effects 0.000 claims abstract description 40
- 238000011084 recovery Methods 0.000 claims description 18
- 238000013459 approach Methods 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 description 6
- 238000002955 isolation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to an LED-drive-equipped solar street lamp controller comprising a photovoltaic plate, a storage battery, a charging circuit, an LED constant current circuit, a field effect transistor drive circuit and a PIC one-chip microcomputer, wherein a return circuit is formed by connecting the photovoltaic plate with the storage battery through the charging circuit, a return circuit is formed by connecting the storage battery with the LED constant current drive circuit, and a return circuit is formed by connecting the rear end of the LED constant current drive circuit with LED lamps; an AD sampling circuit of the PIC one-chip microcomputer is connected to an input end of the charging circuit and an output end of the LED constant current circuit; the field effect transistor drive circuit is controlled by the PIC one-chip microcomputer, and field effect transistors in the charging circuit and the LED constant current circuit are respectively driven by the field effect transistor drive circuit. According to the LED-drive-equipped solar street lamp controller, a maximum power tracing charging function can be fulfilled in a large scope, an LED constant current drive function can be realized in a wide scope and other functions can be fulfilled. The defects that when being charged, a conventional solar energy LED street lamp controller must exceeds the storage battery in voltage while only voltage boost drive or voltage reduction drive can be realized through LED constant current drive and drive voltage cannot approach or equal the voltage of the storage battery and other defects are overcome.
Description
Technical field
The utility model relates to the solar LED street lamp controller that a kind of band LED drives solar street lamp controller, particularly wide-voltage range solar recharging and wide-voltage range LED constant current to drive.
Background technology
Driving solar street lamp controller with LED is the key component in independent solar LED road lamp system, and its effect is that photovoltaic array electric energy is carried out to maximal power tracing (MPPT) for charging a battery and storage battery electric energy being carried out to constant-current driving LED light source.
Existing band LED drives the general BUCK of employing of solar street lamp controller maximal power tracing (MPPT) charging buck configuration, in the time that cell plate voltage is less than battery tension, cannot charge.Simple LED drives the general BUCK of employing step-down constant current to drive or BOOST voltage increase and current constant drives, these two kinds of structure functions are single can only boost or step-down driving through row separately, and in the time that driving voltage approaches or equals battery tension, two kinds of drive circuits all cannot be realized constant current.
Summary of the invention
The utility model drives solar street lamp controller in order to overcome traditional band LED, when charging, voltage must be greater than battery tension, and LED constant current drives to realize and boosts or step-down driving and driving voltage can not approach or equal the shortcomings such as battery tension, provide a kind of new band LED to drive solar street lamp controller, in can relative broad range, realize maximal power tracing (MPPT) charging, again can wide region can realize that LED constant current drives etc.
Band LED drives solar street lamp controller, comprise photovoltaic panel, storage battery, charging circuit, LED constant-current circuit, field effect transistor drive circuit, PIC single-chip microcomputer, it is characterized in that: photovoltaic panel connects into loop by charging circuit and storage battery, storage battery and LED constant-current drive circuit connect into loop, and LED constant-current drive circuit rear end and LED lamp connect into loop; The AD sample circuit of PIC single-chip microcomputer is connected to the input of charging circuit, the output of LED constant-current circuit, PIC Single-chip Controlling field effect transistor drive circuit, and field effect transistor drive circuit drives respectively the field effect transistor in charging circuit and LED constant-current circuit.
Described charging circuit is a BUCK-BOOST step-up/step-down circuit, formed by a field effect transistor, two electric capacity, an inductance and a fast recovery diode, field effect transistor source electrode is connected with photovoltaic panel positive pole, first capacitance cathode respectively, field effect transistor drain electrode is connected with one end of inductance, fast recovery diode respectively, the other one end of inductance is connected with photovoltaic panel negative pole, electric capacity negative pole, battery positive voltage respectively, the other end of fast recovery diode is connected with battery terminal negative, and the both positive and negative polarity of second electric capacity is connected with the both positive and negative polarity of storage battery respectively.Wherein charging circuit is mainly the wide-range voltage of photovoltaic panel to be converted to the voltage that is applicable to charge in batteries through row maximal power tracing (MPPT).
Described LED constant-current drive circuit is a BUCK-BOOST step-up/step-down circuit, formed by a field effect transistor, an electric capacity, an inductance and a fast recovery diode, field effect transistor source electrode is connected with battery positive voltage, field effect transistor drain electrode is connected with one end of inductance, fast recovery diode respectively, the other one end of fast recovery diode is connected with electric capacity negative pole, LED lamp negative pole respectively, and the other end of inductance is connected with the positive pole of battery terminal negative, electric capacity, the positive pole of LED lamp respectively.Wherein LED constant-current drive circuit is mainly by the electric energy of storage battery constant-current driving LED lamp in compared with wide-voltage range.
Described PIC single-chip microcomputer comprises PWM circuit for generating and AD sample circuit, PWM circuit for generating Main Function is to provide signal to field effect transistor drive circuit, and AD sample circuit is mainly the electric current and voltage data in the sampling input of charging circuit and the output loop of LED constant-current circuit.PWM circuit for generating and AD sample circuit are available circuit.
What described field effect transistor drive circuit was selected is high frequency transformer isolation drive, and the pwm signal that PIC single-chip microcomputer is produced drives electric discharge to supply with the field effect transistor power supply in charging circuit, LED constant-current circuit.
The utility model both can have been realized and in relative broad range, realize maximal power tracing (MPPT) charging, again can wide region can realize that LED constant current drives etc. function.While having overcome the charging of current solar LED street lamp controller, voltage must be greater than battery tension, and LED constant current drives to realize and boosts or step-down driving and driving voltage can not approach or equal the shortcomings such as battery tension.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model will be further described by reference to the accompanying drawings.
As shown in Figure 1, band LED drives solar street lamp controller, comprise photovoltaic panel, storage battery, charging circuit, LED constant-current circuit, field effect transistor drive circuit, PIC single-chip microcomputer, it is characterized in that: photovoltaic panel connects into loop by charging circuit and storage battery, storage battery and LED constant-current drive circuit connect into loop, and LED constant-current drive circuit rear end and LED lamp connect into loop; The AD sample circuit of PIC single-chip microcomputer is connected to the input of charging circuit, the output of LED constant-current circuit, PIC Single-chip Controlling field effect transistor drive circuit, and field effect transistor drive circuit drives respectively the field effect transistor in charging circuit and LED constant-current circuit.
Described charging circuit is a BUCK-BOOST step-up/step-down circuit, by a field effect transistor Q1, two electric capacity (C1, C2), an inductance L 1 and a fast recovery diode D1 composition, field effect transistor Q1 source electrode respectively with photovoltaic panel positive pole, the anodal connection of first capacitor C 1, field effect transistor Q1 drain electrode respectively with inductance L 1, one end of fast recovery diode D1 connects, the other one end of inductance L 1 respectively with photovoltaic panel negative pole, capacitor C 1 negative pole, battery positive voltage connects, the other end of fast recovery diode D1 is connected with battery terminal negative, the both positive and negative polarity of second capacitor C 2 is connected with the both positive and negative polarity of storage battery respectively.Wherein charging circuit is mainly the wide-range voltage of photovoltaic panel to be converted to the voltage that is applicable to charge in batteries through row maximal power tracing (MPPT).
Described LED constant-current drive circuit is a BUCK-BOOST step-up/step-down circuit, formed by a field effect transistor Q2, capacitor C 3, an inductance L 2 and a fast recovery diode D2, field effect transistor Q2 source electrode is connected with battery positive voltage, field effect transistor Q2 drain electrode is connected with one end of inductance L 2, fast recovery diode D2 respectively, the other one end of fast recovery diode D2 is connected with capacitor C 3 negative poles, LED lamp negative pole respectively, and the other end of inductance L 2 is connected with the positive pole of battery terminal negative, capacitor C 3, the positive pole of LED lamp respectively.Wherein LED constant-current drive circuit is mainly by the electric energy of storage battery constant-current driving LED lamp in compared with wide-voltage range.
Described PIC single-chip microcomputer comprises PWM circuit for generating and AD sample circuit, PWM circuit for generating Main Function is to provide signal to field effect transistor drive circuit, and AD sample circuit is mainly the electric current and voltage data in the sampling input of charging circuit and the output loop of LED constant-current circuit.PWM circuit for generating and AD sample circuit are available circuit.
What described field effect transistor drive circuit was selected is high frequency transformer isolation drive, and the pwm signal that PIC single-chip microcomputer is produced drives electric discharge to supply with the field effect transistor power supply in charging circuit, LED constant-current circuit.
The utility model both can have been realized and in relative broad range, realize maximal power tracing (MPPT) charging, again can wide region can realize that LED constant current drives etc. function.While having overcome the charging of current solar LED street lamp controller, voltage must be greater than battery tension, and LED constant current drives to realize and boosts or step-down driving and driving voltage can not approach or equal the shortcomings such as battery tension.
Claims (3)
1. band LED drives solar street lamp controller, comprise photovoltaic panel, storage battery, charging circuit, LED constant-current circuit, field effect transistor drive circuit, PIC single-chip microcomputer, it is characterized in that: photovoltaic panel connects into loop by charging circuit and storage battery, storage battery and LED constant-current drive circuit connect into loop, and LED constant-current drive circuit rear end and LED lamp connect into loop; The AD sample circuit of PIC single-chip microcomputer is connected to the input of charging circuit, the output of LED constant-current circuit, PIC Single-chip Controlling field effect transistor drive circuit, and field effect transistor drive circuit drives respectively the field effect transistor in charging circuit and LED constant-current circuit.
2. band LED according to claim 1 drives solar street lamp controller, it is characterized in that: described charging circuit is a BUCK-BOOST step-up/step-down circuit, by a field effect transistor, two electric capacity, an inductance and a fast recovery diode composition, field effect transistor source electrode respectively with photovoltaic panel positive pole, first capacitance cathode connects, field effect transistor drain electrode respectively with inductance, one end of fast recovery diode connects, the other one end of inductance respectively with photovoltaic panel negative pole, electric capacity negative pole, battery positive voltage connects, the other end of fast recovery diode is connected with battery terminal negative, the both positive and negative polarity of second electric capacity is connected with the both positive and negative polarity of storage battery respectively.
3. band LED according to claim 1 drives solar street lamp controller, it is characterized in that: described LED constant-current drive circuit is a BUCK-BOOST step-up/step-down circuit, by a field effect transistor, an electric capacity, an inductance and a fast recovery diode composition, field effect transistor source electrode is connected with battery positive voltage, field effect transistor drain electrode respectively with inductance, one end of fast recovery diode connects, the other one end of fast recovery diode respectively with electric capacity negative pole, LED lamp negative pole connects, the other end of inductance respectively with battery terminal negative, the positive pole of electric capacity, the positive pole of LED lamp connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050585.3U CN203788510U (en) | 2014-01-26 | 2014-01-26 | LED-drive-equipped solar street lamp controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050585.3U CN203788510U (en) | 2014-01-26 | 2014-01-26 | LED-drive-equipped solar street lamp controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788510U true CN203788510U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420050585.3U Expired - Lifetime CN203788510U (en) | 2014-01-26 | 2014-01-26 | LED-drive-equipped solar street lamp controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203788510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831017A (en) * | 2019-02-27 | 2019-05-31 | 北京汇能精电科技股份有限公司 | Power supply unit and system |
-
2014
- 2014-01-26 CN CN201420050585.3U patent/CN203788510U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831017A (en) * | 2019-02-27 | 2019-05-31 | 北京汇能精电科技股份有限公司 | Power supply unit and system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |