CN104009522A - Low-pressure and small-power solar controller - Google Patents
Low-pressure and small-power solar controller Download PDFInfo
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- CN104009522A CN104009522A CN201410234881.3A CN201410234881A CN104009522A CN 104009522 A CN104009522 A CN 104009522A CN 201410234881 A CN201410234881 A CN 201410234881A CN 104009522 A CN104009522 A CN 104009522A
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- effect transistor
- field effect
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a low-pressure and small-power solar controller which comprises an MCU single chip microcomputer, a first sampling circuit, a charging module, a power module, a second sampling circuit and a discharging module. The first sampling circuit, the charging module, the power module, the second sampling circuit and the discharging module are connected with the MCU single chip microcomputer. The first sampling circuit, the charging module, the power module, the second sampling circuit and the discharging module are sequentially connected. The charging module comprises a charging circuit and a charging control circuit, the source electrode of a first field-effect tube of the charging circuit is connected with the output end of the first sampling circuit, the drain electrode of the first field-effect tube of the charging circuit is connected with the drain electrode of a second field-effect tube, and the source electrode of the second field-effect tube is connected with the input end of the power module. A first capacitor is connected between the source electrode and the drain electrode of the first field-effect tube, and a second capacitor is connected between the drain electrode and the source electrode of the second field-effect tube. The two field-effect tubes are controlled by the charging control circuit. The low-pressure and small-power solar controller can precisely control floating charge voltages, guarantee the service life of a battery, and improve charging efficiency.
Description
Technical field
The present invention relates to a kind of controller, particularly relate to a kind of low pressure small-power controller for solar.
Background technology
Controller for solar full name is solar charging/discharging controller, is for solar power system, control multichannel solar cell array to charge in batteries and storage battery the automatic control equipment to solar inverter load supplying.
The charge mode of conventional controller for solar is the syllogic charging method of having copied word by word line charger, i.e. constant current, constant voltage, floating charge three phases.Because the Infinite Energy of utility grid is large, if do not carry out constant current charge, can directly cause storage battery fill quick-fried and damage, but solar panel power limited is unscientific so continue to adopt the charging modes of city's electric controller constant current.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of low pressure small-power controller for solar, can accurately control float charge voltage, guarantees the life-span of storage battery, improves charge efficiency.It can also be faster than common short-circuit protection reaction, reaches not blown out object.
The technical solution adopted for the present invention to solve the technical problems is: a kind of low pressure small-power controller for solar is provided, comprise MCU single-chip microcomputer, and the first sample circuit being connected with described MCU single-chip microcomputer, charging module, power module, the second sample circuit and discharge module, described the first sample circuit, charging module, power module, the second sample circuit is connected successively with discharge module, the input of described the first sample circuit is connected with photovoltaic panel, the output of described discharge module is connected with load, described charging module comprises charging circuit and charging control circuit, described charging circuit comprises the first field effect transistor and the second field effect transistor, the source electrode of described the first field effect transistor is connected with the output of the first sample circuit, the drain electrode of the first field effect transistor is connected with the drain electrode of the second field effect transistor, the source electrode of described the second field effect transistor is connected with the input of power module, between the drain electrode of described the first field effect transistor and source electrode, be also connected with the first electric capacity, between the drain electrode of described the second field effect transistor and source electrode, be also connected with the second electric capacity, the grid of the grid of described the first field effect transistor and the second field effect transistor is connected with the output of charging control circuit respectively.
Described discharge module comprises discharge circuit and charge/discharge control circuit, described discharge circuit comprises the 3rd field effect transistor and the 3rd electric capacity, between the drain electrode of described the 3rd field effect transistor and source electrode, be also connected with the 3rd electric capacity, the drain electrode of described the 3rd field effect transistor is connected with power module, and source electrode is connected with load; Described the 3rd grid of field effect transistor and the output of charge/discharge control circuit are connected.
Described the first sample circuit comprises diode, the first resistance and the second resistance, and the negative pole end of described diode is connected with the second resistance with described the first resistance successively; The positive terminal of described diode is as sampling end; Between described the first resistance and the second resistance, be also connected with the 3rd resistance of a ground connection, one end that described the second resistance is not connected with the first resistance is also connected with the 4th electric capacity of a ground connection.
Described the second sample circuit is identical with the structure of the first sample circuit.
Beneficial effect
Owing to having adopted above-mentioned technical scheme, the present invention compared with prior art, there is following advantage and good effect: charging module of the present invention can adopt micro-Current Control Technology, in the situation that guaranteeing that storage battery is injury-free, utilize charging a battery of maximum photovoltaic module charge efficiency.With traditional charging modes ratio, control more accurately float charge voltage, better guarantee the life-span of storage battery, more improve charge efficiency.Meanwhile, the control circuit of charging module has better been protected the main element in charging module, makes control end voltage more steady, allows inner main element be not easy more safely to puncture.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of low pressure small-power controller for solar;
Fig. 2 is the circuit diagram of charging circuit in low pressure small-power controller for solar;
Fig. 3 A is the control circuit figure that adopts optical coupler, and Fig. 3 B is the control circuit figure that adopts triode;
Fig. 4 is the circuit diagram of sample circuit in low pressure small-power controller for solar;
Fig. 5 is the circuit diagram of discharge circuit in low pressure small-power controller for solar;
Fig. 6 is the circuit diagram of charge/discharge control circuit in low pressure small-power controller for solar.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiments of the present invention relate to a kind of low pressure small-power controller for solar, as shown in Figure 1, comprise MCU single-chip microcomputer and the first sample circuit being connected with described MCU single-chip microcomputer, charging module, power module, the second sample circuit and discharge module, described the first sample circuit, charging module, power module, the second sample circuit are connected successively with discharge module, the input of described the first sample circuit is connected with photovoltaic panel, and the output of described discharge module is connected with load.Power module can be batteries.
Described charging module comprises charging circuit and charging control circuit, as shown in Figure 2, described charging circuit comprises the first field effect transistor Q2 and the second field effect transistor Q4, the source electrode of described the first field effect transistor Q2 is connected with the output of the first sample circuit, the drain electrode of the first field effect transistor Q2 is connected with the drain electrode of the second field effect transistor Q4, and described the second source electrode of field effect transistor Q4 and the input of power module are connected; Between the drain electrode of described the first field effect transistor Q2 and source electrode, be also connected with the first capacitor C 3, between the drain electrode of described the second field effect transistor Q4 and source electrode, be also connected with the second capacitor C 4; The grid of the grid of described the first field effect transistor Q2 and the second field effect transistor Q4 is connected with the output of charging control circuit respectively.Control circuit can adopt optical coupler or triode to realize, and specifically sees Fig. 3 A and Fig. 3 B, and wherein, the control mode in Fig. 3 A can be used for controlling the first field effect transistor, and the control mode in Fig. 3 B can be used for controlling the second field effect transistor.The control signal of two control circuits can send suitable PWM ripple by microcontroller; by controlling charging module, control charging; the control reaction speed of which is fast; defencive function is strong; power consumption power consumption is little, wherein, by field effect transistor, realizes micro-Current Control Technology; in the situation that guaranteeing that storage battery is injury-free, utilize charging a battery of maximum photovoltaic module charge efficiency.It is worth mentioning that, utilizing microcontroller to produce PWM ripple is the common practise of this area, and the application does not improve the generation of PWM ripple, does not repeat them here.
Described the second sample circuit can adopt identical structure with the first sample circuit, as shown in Figure 4, described the first sample circuit comprises diode DR21, the first resistance R 20 and the second resistance R 24, and the negative pole end of described diode DR21 is connected with the second resistance R 24 with described the first resistance R 20 successively; The positive terminal of described diode DR21 is as sampling end; Between described the first resistance R 20 and the second resistance R 24, be also connected with the 3rd resistance R 22 of a ground connection, one end that described the second resistance R 24 is not connected with the first resistance R 20 is also connected with the 4th capacitor C 9 of a ground connection.Then battery tension/photovoltaic module voltage be transferred to microcontroller by two precision resister dividing potential drops, thereby realize sampling.
Described discharge module comprises discharge circuit and charge/discharge control circuit, as shown in Figure 5, described discharge circuit comprises the 3rd field effect transistor Q6 and the 3rd capacitor C 5, between the drain electrode of described the 3rd field effect transistor Q6 and source electrode, be also connected with the 3rd capacitor C 5, the drain electrode of described the 3rd field effect transistor Q6 is connected with power module, and source electrode is connected with load; Described the 3rd grid of field effect transistor Q6 and the output of charge/discharge control circuit are connected.As shown in Figure 6, this control circuit can adopt triode to realize, and the control signal of control circuit can send suitable PWM ripple by microcontroller; by controlling charging module, control charging; the control reaction speed of which is fast, and defencive function is strong, and power consumption power consumption is little.
Claims (4)
1. a low pressure small-power controller for solar, comprise MCU single-chip microcomputer, and the first sample circuit being connected with described MCU single-chip microcomputer, charging module, power module, the second sample circuit and discharge module, described the first sample circuit, charging module, power module, the second sample circuit is connected successively with discharge module, the input of described the first sample circuit is connected with photovoltaic panel, the output of described discharge module is connected with load, it is characterized in that, described charging module comprises charging circuit and charging control circuit, described charging circuit comprises the first field effect transistor and the second field effect transistor, the source electrode of described the first field effect transistor is connected with the output of the first sample circuit, the drain electrode of the first field effect transistor is connected with the drain electrode of the second field effect transistor, the source electrode of described the second field effect transistor is connected with the input of power module, between the drain electrode of described the first field effect transistor and source electrode, be also connected with the first electric capacity, between the drain electrode of described the second field effect transistor and source electrode, be also connected with the second electric capacity, the grid of the grid of described the first field effect transistor and the second field effect transistor is connected with the output of charging control circuit respectively.
2. low pressure small-power controller for solar according to claim 1, it is characterized in that, described discharge module comprises discharge circuit and charge/discharge control circuit, described discharge circuit comprises the 3rd field effect transistor and the 3rd electric capacity, between the drain electrode of described the 3rd field effect transistor and source electrode, be also connected with the 3rd electric capacity, the drain electrode of described the 3rd field effect transistor is connected with power module, and source electrode is connected with load; Described the 3rd grid of field effect transistor and the output of charge/discharge control circuit are connected.
3. low pressure small-power controller for solar according to claim 1, is characterized in that, described the first sample circuit comprises diode, the first resistance and the second resistance, and the negative pole end of described diode is connected with the second resistance with described the first resistance successively; The positive terminal of described diode is as sampling end; Between described the first resistance and the second resistance, be also connected with the 3rd resistance of a ground connection, one end that described the second resistance is not connected with the first resistance is also connected with the 4th electric capacity of a ground connection.
4. low pressure small-power controller for solar according to claim 1, is characterized in that, described the second sample circuit is identical with the structure of the first sample circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234881.3A CN104009522A (en) | 2014-05-28 | 2014-05-28 | Low-pressure and small-power solar controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234881.3A CN104009522A (en) | 2014-05-28 | 2014-05-28 | Low-pressure and small-power solar controller |
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| CN104009522A true CN104009522A (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410234881.3A Pending CN104009522A (en) | 2014-05-28 | 2014-05-28 | Low-pressure and small-power solar controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784943A (en) * | 2022-05-17 | 2022-07-22 | 湖南炬神电子有限公司 | Solar energy storage control circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102035238A (en) * | 2010-12-28 | 2011-04-27 | 广东易事特电源股份有限公司 | Solar charging control circuit |
| CN102255363A (en) * | 2011-07-27 | 2011-11-23 | 广东易事特电源股份有限公司 | Charging circuit topology for solar controller under comprehensive protection and control method thereof |
| CN102570525A (en) * | 2010-12-27 | 2012-07-11 | 广东易事特电源股份有限公司 | PSoC (Programmable System on Chip)-based MPPT (Maximum Power Point Tracking) type solar charge controller |
| CN203243061U (en) * | 2013-01-14 | 2013-10-16 | 安徽精能绿色能源有限公司 | MPPT solar controller |
| CN203984031U (en) * | 2014-05-28 | 2014-12-03 | 宁波保税区绿光能源科技有限公司 | A kind of low pressure small-power controller for solar |
-
2014
- 2014-05-28 CN CN201410234881.3A patent/CN104009522A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570525A (en) * | 2010-12-27 | 2012-07-11 | 广东易事特电源股份有限公司 | PSoC (Programmable System on Chip)-based MPPT (Maximum Power Point Tracking) type solar charge controller |
| CN102035238A (en) * | 2010-12-28 | 2011-04-27 | 广东易事特电源股份有限公司 | Solar charging control circuit |
| CN102255363A (en) * | 2011-07-27 | 2011-11-23 | 广东易事特电源股份有限公司 | Charging circuit topology for solar controller under comprehensive protection and control method thereof |
| CN203243061U (en) * | 2013-01-14 | 2013-10-16 | 安徽精能绿色能源有限公司 | MPPT solar controller |
| CN203984031U (en) * | 2014-05-28 | 2014-12-03 | 宁波保税区绿光能源科技有限公司 | A kind of low pressure small-power controller for solar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784943A (en) * | 2022-05-17 | 2022-07-22 | 湖南炬神电子有限公司 | Solar energy storage control circuit |
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Application publication date: 20140827 |
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