CN201352723Y - Power transforming and solar energy charging circuit - Google Patents
Power transforming and solar energy charging circuit Download PDFInfo
- Publication number
- CN201352723Y CN201352723Y CNU2009200955074U CN200920095507U CN201352723Y CN 201352723 Y CN201352723 Y CN 201352723Y CN U2009200955074 U CNU2009200955074 U CN U2009200955074U CN 200920095507 U CN200920095507 U CN 200920095507U CN 201352723 Y CN201352723 Y CN 201352723Y
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- storage battery
- solar panel
- power consumption
- circuit
- control unit
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Abstract
The utility model relates to a power transforming and solar energy charging circuit provided with a solar panel, a storage battery, a digital controllable power switch, a low power consumption LDO, a double-operational-amplifier comparator and a control unit, wherein the solar panel, the digital controllable power switch, the storage battery and the low power consumption LDO are sequentially connected; the low power consumption LDO outputs power supply voltage; the double-operational-amplifier comparator is respectively connected with the storage battery, the control unit and a voltage reference; and the digital controllable power switch is also connected with the control unit. The storage battery is connected into the circuit by a socket and enters an input end of the low power consumption LDO after undergoing the protection of a diode, the reverse connection prevention of the diode and the capacitor filtering. The solar panel is connected into the circuit by the socket. The power transforming and solar energy charging circuit has simple structure, is charged under the control of a singlechip and causes the electric energy of the solar panel to be charged into the storage battery according to a certain time sequence; and when the battery is fully charged, the singlechip shuts the charge control, and then the charging is stopped. The power transforming and solar energy charging circuit can timely charge the storage battery according to the quantity of electricity in the storage battery, thereby prolonging the service life of the storage battery.
Description
Technical field
The utility model relates to a kind of charging circuit, particularly relates to a kind of power conversion and solar charging circuits that can in time charge to storage battery according to what of accumulator electric-quantity.
Background technology
Be used for open-air unattended solar electric power supply system at present, generally use special chip, or adopt complicated analog circuit, have following deficiency.
1. cost is high relatively, and cost performance is bad, and the long-term supply of material of special chip is unstable, is unfavorable for promoting;
2. generally there is not Single-chip Controlling, therefore relatively poor to the control flexibility in charging interval;
3. power consumption is also higher relatively, and the nonrecoverable time ratio that charges is shorter.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of simple in structure, the power conversion and the solar charging circuits that can in time charge to storage battery according to what of accumulator electric-quantity.
The technical scheme that the utility model adopted is: a kind of power conversion and solar charging circuit, include solar panel, storage battery, also be provided with digital controllable power switch, low-power consumption LDO, double operational comparator and control unit, wherein, solar panel, digital controllable power switch, storage battery and low-power consumption LDO link to each other successively, described low-power consumption LDO output supply power voltage; Described double operational comparator connects storage battery, control unit and voltage reference respectively, and described digital controllable power switch also connects control unit.
Described storage battery is by the socket place in circuit, through diode protection, diode is anti-reverse and capacitor filtering after, enter the input of low-power consumption LDO.
Described solar panel is by the socket place in circuit.
Whether described digital controllable power switch includes by triode Q3 and Q5 forms switching circuit control solar panel to charge in batteries, control unit passes through the charging of the ground level control of triode Q3 to storage battery, and the ground level connection of triode Q5 prevents the diode of storage battery to the solar panel reverse charge.
Power conversion of the present utility model and solar charging circuit, simple in structure, charge by Single-chip Controlling, the electric energy of solar panel is charged a battery according to certain sequential, single-chip microcomputer will charge closing be controlled when battery is full of, stop charging, and battery saving mode is got back to by system.What of accumulator electric-quantity the utility model can in time charge to storage battery according to, prolonged the life of storage battery.The utility model also has following advantage:
1, use universal elements, circuit is simple, with low cost, the components and parts supply of material is stable, helps promoting;
2, use the Single Chip Microcomputer (SCM) program control of charging, can control flexibly according to user's needs, the while can be controlled flexibly according to different accumulator parameters, such as lead acid accumulator, lithium ion battery, Ni-MH battery or the like;
3, used the low-power consumption components and parts, quiescent current is very little, and charging once can reach long stand-by time.Therefore the charging times of battery has also reduced, so also indirect prolongation the life-span of battery.
Description of drawings
Fig. 1 is a formation block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Wherein:
1: solar panel 2: the digital controllable power switch
3: storage battery 4: low-power consumption LDO
5: double operational comparator 6: control unit
7: voltage reference
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify the utility model and how to realize.
As shown in Figure 1, power conversion and solar charging circuit, include solar panel 1, storage battery 3, also be provided with digital controllable power switch 2, low-power consumption LDO 4, double operational comparator 5 and control unit 6, wherein, solar panel 1, digital controllable power switch 2, storage battery 3 and low-power consumption LDO 4 link to each other successively, described low-power consumption LDO 4 output supply power voltages; Described double operational comparator 5 connects storage battery 3, control unit 6 and voltage reference 7 respectively, and described digital controllable power switch 2 also connects control unit 6.Described control unit 6 adopts single-chip microcomputer.
The output of solar panel charges a battery after through the digital controllable power switch, and wherein the digital controllable power switch is subjected to the control of single-chip processor i/o mouth by control line, is used to open and stops charging to storage battery.Battery tension process adjustable resistance enters the two-way comparator in the double operational comparator 5, and one road comparator is used for the cell voltage height ratio, and comparator output enters single-chip microcomputer and detects; It is relatively low that another road comparator is used for cell voltage, and comparator output enters single-chip microcomputer and detects.The short of electricity and the full condition of battery are analyzed and judged to single-chip microcomputer by the output that detects the two-way comparator, controls the charging interval of storage battery then by control figure controlled power switch.The voltage process low-power consumption LDO conversion of storage battery is later on as power supply.
As shown in Figure 2, described storage battery 3 is by socket CZ1 place in circuit, through diode D3 protection, diode D2 is anti-reverse and capacitor C 4 filtering after, enter the input of low-power consumption LDO 4.Described solar panel 1 is by socket CZ5 place in circuit.
Whether described digital controllable power switch 2 includes by triode Q3 and Q5 forms switching circuit control solar panel 1 to storage battery 3 chargings, control unit 6 passes through the charging of the ground level control of triode Q3 to storage battery 3, and the ground level of triode Q5 connects the diode D6 that prevents 3 pairs of solar panel 1 reverse charges of storage battery.
Selected for use 51 series monolithic STC89C58 of macrocrystalline science and technology production as the core control element as the single-chip microcomputer of control unit 6 in the utility model, power consumption is only 0.5 microampere under this chip power-down mode, be fit to very much open-air battery powered product, strong antistatic anti-interference by force, can work in the abominable electromagnetic environment of electric power system.
When battery tension is low excessively, battery tension detects pin will receive low level, and triggering single-chip microcomputer external interrupt wakeup single-chip microcomputer, single-chip microcomputer can be opened charging control, the electric energy of solar panel is charged a battery according to certain sequential, also can trigger interrupt signal and wake single-chip microcomputer up when storage battery is full of, single-chip microcomputer will charge closing be controlled, stop charging, and battery saving mode is got back to by system.
Low-power consumption LDO 4 has selected the low pressure reduction that TI produces for use in the utility model, the LDO of low quiescent current, and model is TPS76350, its leakage current is very low, is fit to very much do the low-power consumption product.Storage battery by socket CZ1 place in circuit through the TVS diode protection, diode is anti-reverse and capacitor filtering after; enter the input pin VIN of TPS76350; export the main power source of 5V voltage as system later on through conversion, capacitor C 9 and C3 carry out filtering once more to 5V.Integrated package LM2576 and diode D1 and inductance L 1 also are the power conversions of output 5V, are used for using when indoor environment has external power supply.Solar panel is by socket CZ5 place in circuit, whether triode Q3 and Q5 form switching circuit control solar panel to charge in batteries, the effect of diode D6 is to prevent that storage battery is to the solar panel reverse charge, here selected the Schottky diode of low pressure drop for use, to improve charge efficiency.The ground level of triode Q3 is controlled by the I/O mouth CHARGE_CTRL of single-chip microcomputer, and single-chip microcomputer CHARGE_CTRL is set to high level when needs charge, and triode Q5 conducting solar panel begins storage battery is charged.Single-chip microcomputer CHARGE_CTRL is set to low level when charging is finished, and triode Q5 stops charge in batteries by solar panel.Double operational LM358 and interlock circuit are formed two comparators, and it is low excessively that amplifier 1 is used for the comparison cell voltage, and it is too high that amplifier 2 is used for the comparison cell voltage.Diode D9 is a voltage-reference, has selected the LM385 of 2.5V voltage reference for use, for two comparators provide reference voltage.Resistance R 29, R31 and R39 form bleeder circuit, regulate resistance R 39 and select suitable voltage ratio, make cell voltage drop to suitable value and just in time equal reference voltage 2.5V through dividing potential drop later on, the output BATT_LOW of comparator 1 will output low level like this, BATT_LOW is connected to single-chip microcomputer BATT_LOW and detects pin, single-chip microcomputer detects this pin to be had after the low level, just opens CHARGE_CTRL and begins charging.In like manner, resistance R 28, R30 and R36 form the too high bleeder circuit of cell voltage, regulate resistance R 36 and select suitable voltage ratio, make cell voltage be filled to suitable value and just in time equal reference voltage 2.5V through dividing potential drop later on, the output BATT_HIGH of comparator 2 will output low level like this.BATT_HIGH is connected to single-chip microcomputer BATT_HIGH and detects pin, and single-chip microcomputer detects this pin to be had after the low level, just closes CHARGE_CTRL and stops charging.Such charging process helps prolonging the life of storage battery.
Claims (4)
1. power conversion and solar charging circuit, include solar panel (1), storage battery (3), it is characterized in that, also be provided with digital controllable power switch (2), low-power consumption LDO (4), double operational comparator (5) and control unit (6), wherein, solar panel (1), digital controllable power switch (2), storage battery (3) and low-power consumption LDO (4) link to each other successively, and described low-power consumption LDO (4) exports supply power voltage; Described double operational comparator (5) connects storage battery (3), control unit (6) and voltage reference (7) respectively, and described digital controllable power switch (2) also connects control unit (6).
2. power conversion according to claim 1 and solar charging circuit; it is characterized in that; described storage battery (3) is by socket (CZ1) place in circuit; through diode (D3) protection, diode (D2) is anti-reverse and electric capacity (C4) filtering after, enter the input of low-power consumption LDO (4).
3. power conversion according to claim 1 and solar charging circuit is characterized in that, described solar panel (1) is by socket (CZ5) place in circuit.
4. power conversion according to claim 1 and solar charging circuit, it is characterized in that, whether described digital controllable power switch (2) includes forms switching circuit control solar panel (1) by triode Q3 and Q5 and storage battery (3) is charged, control unit (6) passes through the charging of the ground level control of triode Q3 to storage battery (3), and the ground level connection of triode Q5 prevents the diode (D6) of storage battery (3) to solar panel (1) reverse charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200955074U CN201352723Y (en) | 2009-02-09 | 2009-02-09 | Power transforming and solar energy charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200955074U CN201352723Y (en) | 2009-02-09 | 2009-02-09 | Power transforming and solar energy charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201352723Y true CN201352723Y (en) | 2009-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200955074U Expired - Fee Related CN201352723Y (en) | 2009-02-09 | 2009-02-09 | Power transforming and solar energy charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201352723Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104352A (en) * | 2010-09-28 | 2011-06-22 | 常州天合光能有限公司 | Bypass system of intelligent photovoltaic component power optimizer |
| CN103729952A (en) * | 2012-10-10 | 2014-04-16 | 天津赛思科技发展有限公司 | Power distribution anti-theft controller |
| CN109888883A (en) * | 2019-03-28 | 2019-06-14 | 南京机电职业技术学院 | Two-way switches integrated power supply and two-way switch unit circuit therein |
| CN110187162A (en) * | 2019-05-23 | 2019-08-30 | 北京长城华冠汽车科技股份有限公司 | Rouser, method and vehicle |
-
2009
- 2009-02-09 CN CNU2009200955074U patent/CN201352723Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104352A (en) * | 2010-09-28 | 2011-06-22 | 常州天合光能有限公司 | Bypass system of intelligent photovoltaic component power optimizer |
| CN103729952A (en) * | 2012-10-10 | 2014-04-16 | 天津赛思科技发展有限公司 | Power distribution anti-theft controller |
| CN103729952B (en) * | 2012-10-10 | 2016-12-21 | 天津赛思科技发展有限公司 | A kind of power distribution anti-theft controller |
| CN109888883A (en) * | 2019-03-28 | 2019-06-14 | 南京机电职业技术学院 | Two-way switches integrated power supply and two-way switch unit circuit therein |
| CN109888883B (en) * | 2019-03-28 | 2024-05-31 | 南京机电职业技术学院 | Dual-path switching integrated power supply and dual-path switching unit circuit thereof |
| CN110187162A (en) * | 2019-05-23 | 2019-08-30 | 北京长城华冠汽车科技股份有限公司 | Rouser, method and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20130209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |