CN105098957B - A kind of controller for solar circuit - Google Patents

A kind of controller for solar circuit Download PDF

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Publication number
CN105098957B
CN105098957B CN201510466715.0A CN201510466715A CN105098957B CN 105098957 B CN105098957 B CN 105098957B CN 201510466715 A CN201510466715 A CN 201510466715A CN 105098957 B CN105098957 B CN 105098957B
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main battery
positive pole
module
mcu
controller
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CN105098957A (en
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郝建强
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MOSO POWER SUPPLY TECHNOLOGY Co Ltd
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MOSO POWER SUPPLY TECHNOLOGY Co Ltd
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Abstract

The embodiment of the invention discloses a kind of controller for solar circuit, the controller for solar circuit includes main battery, reserve battery, circuit handover module, MCU, division module, wherein:The positive pole of main battery connects the first end of division module respectively;The second end connection MCU of division module input I1;The positive pole of first end connection main battery or the positive pole of reserve battery of circuit handover module, the second end connection MCU of circuit handover module the first output end O1;Second output end O2 of the negative pole of main battery, the negative pole connection MCU of reserve battery;MCU is used for using division module when the voltage for detecting main battery is less than or equal to predetermined voltage threshold, switch-over control signal is sent to circuit handover module, circuit handover module is used to receive switch-over control signal, and the first end of circuit handover module is switched to the positive pole of connection reserve battery by the positive pole of connection main battery.Implement the embodiment of the present invention, advantageously reduce quiescent dissipation, improve security.

Description

A kind of controller for solar circuit
Technical field
The present invention relates to electronic circuit technology field, and in particular to a kind of controller for solar circuit.
Background technology
Solar charging discharging controller (hereinafter referred to as controller for solar) is in solar power system, more for controlling The automatically controlling for power supply that charging and battery of the road solar cell array to battery load to solar inverter sets It is standby.In remote rural area and electricity consumption inconvenient area, very universal application is obtained, but if run into continuous rainy days Gas, battery cannot get sun charging for a long time, even if not giving load discharge, due to the loss of controller itself, if not in time Take measures to handle, the time, which has been grown, can damage battery.
The content of the invention
The invention discloses controller for solar power circuit, to reduce the static state of the main battery of controller for solar Loss, improve the security of main battery.
First aspect present invention discloses a kind of controller for solar circuit, including the switching of main battery, reserve battery, circuit Module, MCU, division module, wherein:
The positive pole of the main battery connects the first end of the division module respectively;Second end of the division module connects Meet the input I1 of the MCU;The first end of the circuit handover module connects the positive pole or described standby of the main battery The positive pole of battery, the second end of the circuit handover module connect the first output end O1 of the MCU;The main battery is born Pole, the negative pole of the reserve battery connect the second output end O2 of the MCU;
The MCU is used to be less than or equal to default electricity in the voltage for detecting the main battery using the division module When pressing threshold value, switch-over control signal is sent to circuit handover module, the circuit handover module is used to receive the switching control Signal, the first end of the circuit handover module is switched into the connection reserve battery by the positive pole for connecting the main battery Positive pole.
With reference to first aspect present invention, in the first possible implementation of first aspect present invention, the partial pressure Module includes sampling resistor R1 and sampling resistor R2, wherein,
The positive pole of the main battery connects the first end of the sampling resistor R1, and the second end of the sampling resistor R1 connects Connect the first end of the sampling resistor R2, the MCU input I1, the sampling resistor R2 the second end ground connection.
With reference to the possible implementation of the first of first aspect present invention or first aspect, in first aspect present invention In second of possible implementation, the circuit handover module include sampling resistor R3, sampling resistor R4, triode T1, after Electrical equipment K, diode VD1 and 12V power supply, wherein:
The first output end O1 connections sampling resistor R3 of MCU first end, the second of the sampling resistor R3 End connects first end, the base stage of the triode T1 of the sampling resistor R4, the second end of the sampling resistor R4, described three Pole pipe T1 grounded emitter, the colelctor electrode of the triode T1 connect the first end of the relay K, the diode VD1 Positive pole, the second end of the relay K connects positive pole, the negative pole of the diode VD1 of the 12V power supplys;
Wherein, the MCU is used in the voltage for detecting the main battery be less than or equal to using the division module During predetermined voltage threshold, low level signal is sent to the triode T1 to cause the triode T1 to be switched to by conducting state The potential of cut-off state, the potential of the colelctor electrode of the triode T1 and the diode VD1 negative pole causes the diode VD1 switches to cut-off state by conducting state, and the first end of the relay K and the electrical potential difference at the second end promote the relay K double-throw contact E1 is switched to the positive pole for connecting the reserve battery by the positive pole for connecting the main battery.
With reference to second of possible implementation of first aspect present invention, the third in first aspect present invention may Implementation in, the controller for solar circuit also includes control of discharge module, wherein:
The positive pole of the first end connection main battery of the control of discharge module, the second of the control of discharge module The first end of end connection load, the second end of the load connect the negative pole of the main battery, the control of discharge module The 3rd output end O3 of MCU described in three-terminal link;
The MCU is used for when the voltage for detecting the main battery is more than or equal to predetermined threshold value, to the electric discharge Control module sends Continuity signal to promote the main battery as the load supplying.
With reference to the third possible implementation of first aspect present invention, in the 4th kind of possibility of first aspect present invention Implementation in, the controller for solar circuit also include charge control module, rectification module, wherein:
The first end of the positive pole connection charge control module of the main battery, the second of the charge control module End connects the first output end 1 of the rectification module, the 4th output of MCU described in the three-terminal link of the charge control module O4 is held, the second output end 2 of the rectification module connects the negative pole of the main battery, the first input end of the rectification module 3 and second input 4 be used for connect input voltage;The rectification module is used to power to the main battery.
With reference to the 4th kind of possible implementation of first aspect present invention, in the 5th kind of possibility of first aspect present invention Implementation in, the load includes LED lamp;The input voltage is provided by solar cell array.
With reference to the 5th kind of possible implementation of first aspect present invention, in the 6th kind of possibility of first aspect present invention Embodiment in, the rectification module includes:
Transformer T1, commutation diode D1, D2, D3, D4, filter capacitor C1, electric pressure converter VC1, wherein:
The transformer T1 primary winding both ends are used to connect input voltage, the first end difference of the transformer T1 auxiliary winding Connect the positive pole of the commutation diode D1 and the negative pole of the commutation diode D4, the negative pole difference of the commutation diode D1 Connect the control source of the negative pole of the commutation diode D2, the positive pole of the filter capacitor C1 and the electric pressure converter VC1 Hold Vin, the positive pole of the commutation diode D2 connect respectively the commutation diode D3 negative pole and the transformer T1 pairs around Second end of group, the positive pole of the commutation diode D3 connect the positive pole of the commutation diode D4, the filter capacitor respectively C1 negative pole, the electric pressure converter VC1 ground terminal Gnd, the electric pressure converter VC1 voltage output end Out connections described in The positive pole of main battery.
With reference to the 6th kind of possible implementation of first aspect present invention, in the 7th kind of possibility of first aspect present invention Embodiment in, the controller for solar circuit also includes loudspeaker and luminous component;
The positive pole of the reserve battery connects the first end of the loudspeaker and the first end of the luminous component, institute respectively State the double-throw contact that the second end of loudspeaker connects the relay K with the second end of the luminous component.
With reference to the 7th kind of possible implementation of first aspect present invention, in the 8th kind of possibility of first aspect present invention Embodiment in, the main battery includes battery;The reserve battery includes button cell.
With reference to the 8th kind of possible implementation of first aspect present invention, in the 9th kind of possibility of first aspect present invention Embodiment in, the relay K includes electromagnetic relay.
In the embodiment of the present invention, MCU is used in the voltage for detecting main battery be less than or equal in advance using division module If during voltage threshold, switch-over control signal is sent to circuit handover module, circuit handover module is used to receive switch-over control signal, The first end of circuit handover module is switched to the positive pole of connection reserve battery by the positive pole of connection main battery.The present invention is implemented In example, when circuit handover module controls its first end to switch to the connection reserve battery by the positive pole for connecting the main battery Positive pole when, reserve battery starts to give MCU power supplies, and main battery and MCU are in off state, in this case, main battery It will not be powered again to MCU, avoid MCU from continuing to consume the voltage of main battery, so as to advantageously reduce the master of controller for solar With the quiescent dissipation of battery, the security of main battery is improved.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area For those of ordinary skill, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structure chart of controller for solar circuit disclosed in first embodiment of the invention;
Fig. 2 is a kind of structure chart of controller for solar circuit disclosed in second embodiment of the invention;
Fig. 3 is a kind of structure chart of controller for solar circuit disclosed in third embodiment of the invention;
Fig. 4 is a kind of structure chart of controller for solar circuit disclosed in fourth embodiment of the invention;
Fig. 5 is a kind of structure chart of controller for solar circuit disclosed in fifth embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
The invention discloses a kind of controller for solar circuit, to reduce the static state of the main battery of controller for solar Loss, improve the security of main battery.It is described in detail individually below.
Referring to Fig. 1, Fig. 1 is a kind of structure chart of controller for solar circuit disclosed in the embodiment of the present invention.Such as Fig. 1 institutes Showing, the controller for solar circuit can include main battery, reserve battery, circuit handover module, MCU, division module, its In:
The positive pole of main battery connects the first end of division module respectively;The second end connection MCU of division module input Hold I1;The positive pole of first end connection main battery or the positive pole of reserve battery of circuit handover module, the of circuit handover module Two ends connect MCU the first output end O1;Second output end O2 of the negative pole of main battery, the negative pole connection MCU of reserve battery; MCU is used to using division module when the voltage for detecting main battery is less than or equal to predetermined voltage threshold, to circuit switch Module sends switch-over control signal, and circuit handover module is used to receive switch-over control signal, by the first end of circuit handover module The positive pole of connection reserve battery is switched to by the positive pole of connection main battery.
The operation principle of controller for solar circuit shown in Fig. 1 is:Under normal circumstances, main battery is powered to MCU;When For MCU using division module when the voltage for detecting main battery is less than or equal to predetermined voltage threshold, MCU passes through the first output O1 is held to send switch-over control signal to the second end of circuit handover module, circuit handover module receives the switching control that MCU is sent After signal, the first end of circuit handover module is switched to the positive pole of connection reserve battery by the positive pole of connection main battery, Powered by reserve battery to MCU.
Similarly, when above-mentioned MCU is more than or equal to predetermined threshold value using division module in the voltage for detecting main battery, MCU sends switch-over control signal by the first output end O1 to the second end of circuit handover module, and circuit handover module receives MCU After the switch-over control signal of transmission, connection is switched to lead by the positive pole of connection reserve battery the first end of circuit handover module With the positive pole of battery, i.e., powered by main battery to MCU.
In the controller for solar circuit described by Fig. 1, MCU is used to detect main battery using division module When voltage is less than or equal to predetermined voltage threshold, switch-over control signal is sent to circuit handover module, circuit handover module is used for Switch-over control signal is received, the first end of circuit handover module is switched into connection reserve battery by the positive pole of connection main battery Positive pole.In the embodiment of the present invention, when circuit handover module controls its first end to switch to company by the positive pole of connection main battery When connecing the positive pole of reserve battery, reserve battery starts to power to MCU, and main battery is in off state with MCU, in this state Under, main battery will not power to MCU again, avoid MCU from continuing to consume the voltage of main battery, so as to advantageously reduce solar energy The quiescent dissipation of the main battery of controller, improve the security of main battery.
Referring to Fig. 2, Fig. 2 is a kind of structure chart of controller for solar circuit disclosed in second embodiment of the invention.Its In, the controller for solar circuit shown in Fig. 2 is to optimize what is obtained to the controller for solar circuit shown in Fig. 1, with Fig. 1 Shown controller for solar circuit is compared, and the division module in controller for solar circuit shown in Fig. 2 includes sampling resistor R1 and sampling resistor R2, circuit handover module include sampling resistor R3, sampling resistor R4, triode T1, relay K, diode VD1 and 12V power supplys, wherein:
The positive pole connection sampling resistor R1 of main battery first end, sampling resistor R1 the second end connection sampling resistor R2 First end, MCU input I1, sampling resistor R2 the second end ground connection.
MCU the first output end O1 connection sampling resistors R3 first end, sampling resistor R3 the second end connection sampling electricity R4 first end, triode T1 base stage is hindered, sampling resistor R4 the second end, triode T1 emitter stage are grounded respectively, three poles Pipe T1 collector connection relay K first end, diode VD1 positive pole, relay K the second end connection 12V power supplys The negative pole of positive pole, diode VD1;
Wherein, MCU is used to be less than or equal to predetermined voltage threshold in the voltage for detecting main battery using division module When, low level signal is sent to cause triode T1 to switch to cut-off state by conducting state to triode T1, triode T1's The potential of the potential of colelctor electrode and diode VD1 negative pole causes diode VD1 to switch to cut-off state, relay by conducting state Device K positive pole and the electrical potential difference of negative pole promote relay K double-throw contact E1 to switch to connection by the positive pole of connection main battery The positive pole of reserve battery.
The operation principle of controller for solar circuit shown in Fig. 2 is:Under normal circumstances, main battery is powered to MCU;When For MCU using division module when the voltage for detecting main battery is less than or equal to predetermined voltage threshold, MCU passes through the first output End O1 sends low level signal to cause triode T1 to switch to cut-off by conducting state to the triode T1 of circuit handover module The potential of state, the potential of triode T1 colelctor electrode and diode VD1 negative pole causes diode VD1 to be switched by conducting state For cut-off state, relay K positive pole and the electrical potential difference of negative pole promote relay K double-throw contact E1 by connection main battery Positive pole switches to the positive pole of connection reserve battery, i.e., is powered by reserve battery to MCU.
Similarly, when above-mentioned MCU is more than or equal to predetermined threshold value using division module in the voltage for detecting main battery, MCU sends high level signal with triode T1 by cut-off shape by the first output end O1 to the second end of circuit handover module State switches to conducting state, the potential of the potential of triode T1 colelctor electrode and diode VD1 negative pole cause diode VD1 by Cut-off state switches to conducting state, relay K positive pole and the electrical potential difference (electrical potential difference is approximately 0V this moment) of negative pole promote after Electrical equipment K double-throw contact E1 is switched to the positive pole of connection main battery by the positive pole of connection reserve battery, i.e., is given by main battery MCU powers.
In the controller for solar circuit described by Fig. 2, MCU is used to detect main battery using division module When voltage is less than or equal to predetermined voltage threshold, switch-over control signal is sent to circuit handover module, circuit handover module is used for Switch-over control signal is received, the first end of circuit handover module is switched into connection reserve battery by the positive pole of connection main battery Positive pole.In the embodiment of the present invention, when circuit handover module controls its first end to switch to company by the positive pole of connection main battery When connecing the positive pole of reserve battery, reserve battery starts to power to MCU, and main battery is in off state with MCU, in this state Under, main battery will not power to MCU again, avoid MCU from continuing to consume the voltage of main battery, so as to advantageously reduce solar energy The quiescent dissipation of the main battery of controller, improve the security of main battery.
Referring to Fig. 3, Fig. 3 is a kind of structure chart of controller for solar circuit disclosed in third embodiment of the invention.Its In, the controller for solar circuit shown in Fig. 3 is to optimize what is obtained to the controller for solar circuit shown in Fig. 2, with Fig. 2 Shown controller for solar circuit is compared, and control of discharge module can also be included in the controller for solar circuit shown in Fig. 3, Charge control module, rectification module, wherein:
The positive pole of the first end connection main battery of control of discharge module, the second end connection load of control of discharge module First end, the second end of load connect the negative pole of main battery, the three-terminal link MCU of control of discharge module the 3rd output end O3;
Optionally, in the embodiment of the present invention, above-mentioned control of discharge module can also include booster circuit, turn straight by direct current Flow power supply DC/DC and give load (such as LED) power supply.
Optionally, in the embodiment of the present invention, above-mentioned control of discharge module can also include DC/AC inverter circuits, by inverse The direct current for becoming main battery provides alternating current into exchange to load.
MCU is used for when the voltage for detecting main battery is less than or equal to predetermined threshold value, is sent to control of discharge module Break signal is to promote main battery no longer for load supplying.
The first end of the positive pole connection charge control module of main battery, the second end connection rectification mould of charge control module First output end 1 of block, the three-terminal link MCU of charge control module the 4th output end O4, the second output of rectification module The negative pole of the connection of end 2 main battery, the input 4 of first input end 3 and second of rectification module are used to connect input voltage;Rectification Module is used to power to main battery.
In the specific implementation, the described load in the embodiment of the present invention for example can be LED lamp, above-mentioned input voltage Such as can be provided by solar cell array.
In the specific implementation, as shown in figure 4, the described rectification module in the embodiment of the present invention can include:
Transformer T1, commutation diode D1, D2, D3, D4, filter capacitor C1, electric pressure converter VC1, wherein:
Wherein, transformer T1 primary winding both ends are used to connect input voltage, and the first end of transformer T1 auxiliary winding connects respectively Commutation diode D1 positive pole and commutation diode D4 negative pole are connect, commutation diode D1 negative pole connects commutation diode respectively The voltage input end Vin of D2 negative pole, filter capacitor C1 positive pole and electric pressure converter VC1, commutation diode D2 positive pole point Not Lian Jie commutation diode D3 negative pole and the second end of transformer T1 auxiliary winding, commutation diode D3 positive pole connects whole respectively Flow diode D4 positive pole, filter capacitor C1 negative pole, electric pressure converter VC1 ground terminal Gnd, electric pressure converter VC1 voltage The positive pole of output end Out connection main batteries.
The operation principle of above-mentioned rectification module is:The alternating current of solar cell array input is received, passes through transformer T1 Transformation and direct current is rectified into by commutation diode D1, D2, D3, D4 rectifier bridge formed, then filtered by filter capacitor C1 and electricity Galvanic current is converted to after pressure converter VC1 to power to main battery.
The operation principle of controller for solar circuit shown in Fig. 3 and Fig. 4 is:Under normal circumstances, main battery supplies to MCU Electricity;When MCU is less than or equal to predetermined voltage threshold using division module in the voltage for detecting main battery, MCU passes through One output end O1 sends low level signal to cause triode T1 to be switched by conducting state to the triode T1 of circuit handover module For cut-off state, the potential of the potential of triode T1 colelctor electrode and diode VD1 negative pole causes diode VD1 by conducting shape State switches to cut-off state, and relay K positive pole and the electrical potential difference of negative pole promote relay K double-throw contact E1 primary by connecting The positive pole of battery switches to the positive pole of connection reserve battery, i.e., is powered by reserve battery to MCU.
Similarly, when above-mentioned MCU is more than or equal to predetermined threshold value using division module in the voltage for detecting main battery (it can be charged by above-mentioned rectification module to main battery, promote main battery voltage to return to more than or equal to predetermined threshold value Magnitude of voltage), MCU sends high level signal with triode T1 by the first output end O1 to the second end of circuit handover module Conducting state is switched to by cut-off state, the potential of the potential of triode T1 colelctor electrode and diode VD1 negative pole causes two Pole pipe VD1 switches to conducting state by cut-off state, and (electrical potential difference is approximately this moment for relay K positive pole and the electrical potential difference of negative pole Relay K double-throw contact E1 0V) is promoted to switch to the positive pole of connection main battery by the positive pole of connection reserve battery, i.e., by leading Powered with battery to MCU.
In the controller for solar circuit described by Fig. 3 and Fig. 4, MCU be used for using division module detect it is primary When the voltage of battery is less than or equal to predetermined voltage threshold, switch-over control signal, circuit switching mould are sent to circuit handover module Block is used to receive switch-over control signal, switches to connection standby by the positive pole of connection main battery the first end of circuit handover module With the positive pole of battery.In the embodiment of the present invention, when circuit handover module controls its first end to be cut by the positive pole of connection main battery When being changed to the positive pole of connection reserve battery, reserve battery starts to power to MCU, and main battery is in off state with MCU, herein Under state, main battery will not power to MCU again, avoid MCU from continuing to consume the voltage of main battery, so as to advantageously reduce too The quiescent dissipation of the main battery of positive energy controller, improve the security of main battery.
Referring to Fig. 5, Fig. 5 is a kind of structure chart of controller for solar circuit disclosed in fifth embodiment of the invention.Its In, the controller for solar circuit shown in Fig. 5 is to optimize what is obtained to the controller for solar circuit shown in Fig. 3, with Fig. 3 Shown controller for solar circuit is compared, and loudspeaker can also be included in the controller for solar circuit shown in Fig. 5 and is lighted Part, wherein:
The positive pole of reserve battery connects the first end of loudspeaker and the first end of luminous component, the second end of loudspeaker respectively Relay K double-throw contact is connected with the second end of luminous component.
Optionally, the main battery described by the embodiment of the present invention for example can be battery, etc.;Institute of the embodiment of the present invention The reserve battery of description for example can be button cell, etc..
Optionally, the relay K described by the embodiment of the present invention for example can be electromagnetic relay.
The operation principle of controller for solar circuit shown in Fig. 5 is:Main battery may be under the first power shortage state (this first power shortage state can be specifically that MCU detects that the voltage of main battery is less than the first predetermined threshold value and has passed through control Control of discharge module processed disconnects the connection between main battery positive pole and the first end of load, and the first predetermined threshold value should be greater than or Equal to above-mentioned predetermined threshold value, for example, main battery normal voltage is 12V, the first predetermined threshold value is 11.5V, and predetermined threshold value can be with For 11.3V or 11.2V, etc.), main battery is powered to MCU;When MCU is detecting the electricity of main battery using division module When pressure is less than or equal to predetermined voltage threshold, MCU is sent low by the first output end O1 to the triode T1 of circuit handover module Level signal is to cause triode T1 to switch to cut-off state, the potential and diode of triode T1 colelctor electrode by conducting state The potential of VD1 negative pole causes diode VD1 to switch to cut-off state, relay K positive pole and the electricity of negative pole by conducting state Potential difference promotes relay K double-throw contact E1 to switch to the positive pole of connection reserve battery by the positive pole of connection main battery, i.e., by Reserve battery is powered to MCU.
Similarly, when above-mentioned MCU is more than or equal to predetermined threshold value using division module in the voltage for detecting main battery (it can be charged by above-mentioned rectification module to main battery, promote main battery voltage to return to more than or equal to predetermined threshold value Magnitude of voltage), MCU sends high level signal with triode T1 by the first output end O1 to the second end of circuit handover module Conducting state is switched to by cut-off state, the potential of the potential of triode T1 colelctor electrode and diode VD1 negative pole causes two Pole pipe VD1 switches to conducting state by cut-off state, and (electrical potential difference is approximately this moment for relay K positive pole and the electrical potential difference of negative pole Relay K double-throw contact E1 0V) is promoted to switch to the positive pole of connection main battery by the positive pole of connection reserve battery, i.e., by leading Powered with battery to MCU.
In the controller for solar circuit described by Fig. 5, MCU is used to detect main battery using division module When voltage is less than or equal to predetermined voltage threshold, switch-over control signal is sent to circuit handover module, circuit handover module is used for Switch-over control signal is received, the first end of circuit handover module is switched into connection reserve battery by the positive pole of connection main battery Positive pole.In the embodiment of the present invention, when circuit handover module controls its first end to switch to company by the positive pole of connection main battery When connecing the positive pole of reserve battery, reserve battery starts to power to MCU, and main battery is in off state with MCU, in this state Under, main battery will not power to MCU again, avoid MCU from continuing to consume the voltage of main battery, so as to advantageously reduce solar energy The quiescent dissipation of the main battery of controller, improve the security of main battery.
The controller for solar circuit provided above the embodiment of the present invention is described in detail, used herein Specific case is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands this The method and its core concept of invention;Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, specific There will be changes in embodiment and application, in summary, this specification content should not be construed as to the present invention's Limitation.

Claims (10)

1. a kind of controller for solar circuit, including main battery, reserve battery, circuit handover module, micro-control unit MCU, Division module, it is characterised in that wherein:
The positive pole of the main battery connects the first end of the division module;Described in the second end connection of the division module MCU input I1;The first end of the circuit handover module connects the positive pole of the main battery, the circuit handover module The second end connect the first output end O1 of the MCU;The negative pole connection institute of the negative pole of the main battery, the reserve battery State MCU the second output end O2;
The MCU is used to be less than the first predetermined threshold value and in the voltage for detecting the main battery using the division module By controlling discharge module to disconnect main battery positive pole and loading the connection between first end, main battery is powered to MCU, examined When measuring the voltage of the main battery and being less than or equal to predetermined voltage threshold, switching control letter is sent to circuit handover module Number, the circuit handover module is used to receive the switch-over control signal, by the first end of the circuit handover module by connecting The positive pole of the main battery switches to the positive pole for connecting the reserve battery, and first predetermined threshold value is more than the default threshold Value.
2. controller for solar circuit as claimed in claim 1, it is characterised in that the division module includes sampling resistor R1 With sampling resistor R2, wherein:
The positive pole of the main battery connects the first end of the sampling resistor R1, the second end connection institute of the sampling resistor R1 State sampling resistor R2 first end, the MCU input I1, the sampling resistor R2 the second end ground connection.
3. the controller for solar circuit as described in any one of claim 1 or 2, it is characterised in that the circuit handover module Including sampling resistor R3, sampling resistor R4, triode T1, relay K, diode VD1 and 12V power supply, wherein:
The first output end O1 connections sampling resistor R3 of MCU first end, the second end of the sampling resistor R3 connect Connect first end, the base stage of the triode T1 of the sampling resistor R4, the second end of the sampling resistor R4, the triode T1 grounded emitter, the colelctor electrode of the triode T1 are connecting the first end of the relay K, the diode VD1 just Pole, the second end of the relay K connect positive pole, the negative pole of the diode VD1 of the 12V power supplys;
Wherein, the MCU is used in the voltage for detecting the main battery be less than or equal to using the division module and preset During voltage threshold, low level signal is sent to the triode T1 to cause the triode T1 to switch to cut-off by conducting state The potential of state, the potential of the colelctor electrode of the triode T1 and the diode VD1 negative pole cause the diode VD1 by Conducting state switches to cut-off state, and the first end of the relay K and the electrical potential difference at the second end promote cutting for the relay K Change contact E1 and the positive pole for connecting the reserve battery is switched to by the positive pole for connecting the main battery.
4. controller for solar circuit as claimed in claim 3, it is characterised in that the controller for solar circuit also includes Control of discharge module, wherein:
The first end of the control of discharge module connects the positive pole of the main battery, and the second end of the control of discharge module connects Connect the first end of load, the second end of the load connects the negative pole of the main battery, the 3rd of the control of discharge module the End connects the 3rd output end O3 of the MCU;
The MCU is used for when the voltage for detecting the main battery is less than or equal to predetermined threshold value, to the control of discharge Module sends break signal to promote the main battery no longer for the load supplying.
5. controller for solar circuit as claimed in claim 4, it is characterised in that the controller for solar circuit also includes Charge control module, rectification module, wherein:
The positive pole of the main battery connects the first end of the charge control module, and the second end of the charge control module connects Connect the first output end 1 of the rectification module, MCU the 4th output end described in the three-terminal link of the charge control module O4, MCU the 4th output end O4 described in the three-terminal link of the charge control module, the second output end of the rectification module The negative pole of the 2 connection main batteries, the input 4 of first input end 3 and second of the rectification module are used to connect input electricity Pressure;The rectification module is used to power to the main battery.
6. controller for solar circuit as claimed in claim 5, it is characterised in that
The load includes LED lamp;The input voltage is provided by solar cell array.
7. controller for solar circuit as claimed in claim 6, it is characterised in that the rectification module includes:
Transformer T1, commutation diode D1, D2, D3, D4, filter capacitor C1, electric pressure converter VC1, wherein:
The transformer T1 primary winding both ends are used to connect input voltage, and the first end of the transformer T1 auxiliary winding connects respectively The negative pole of the positive pole of the commutation diode D1 and the commutation diode D4, the negative pole of the commutation diode D1 connect respectively The voltage input end of the negative pole of the commutation diode D2, the positive pole of the filter capacitor C1 and the electric pressure converter VC1 Vin, the commutation diode D2 positive pole connect the negative pole of the commutation diode D3 and the transformer T1 auxiliary winding respectively The second end, the positive pole of the commutation diode D3 connects the positive pole of the commutation diode D4, the filter capacitor C1 respectively Negative pole, the electric pressure converter VC1 ground terminal Gnd, the electric pressure converter VC1 the voltage output end Out connections master With the positive pole of battery.
8. controller for solar circuit as claimed in claim 7, it is characterised in that the controller for solar circuit also includes Loudspeaker and luminous component, wherein:
The positive pole of the reserve battery connects the first end of the loudspeaker and the first end of the luminous component respectively, described to raise Second end of sound device connects the double-throw contact of the relay K with the second end of the luminous component.
9. controller for solar circuit as claimed in claim 8, it is characterised in that
The main battery includes battery;The reserve battery includes button cell.
10. controller for solar circuit as claimed in claim 9, it is characterised in that
The relay K includes electromagnetic relay.
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CN110071569B (en) * 2018-01-22 2023-10-13 关隆股份有限公司 Load control system and control method thereof
CN108418300B (en) * 2018-05-09 2023-08-08 广州大学 Main and standby battery power supply automatic switching output circuit
CN111509832A (en) * 2020-03-12 2020-08-07 深圳市海洋王照明工程有限公司 Double-battery management circuit and lamp
CN112636447A (en) * 2020-12-21 2021-04-09 苏州博众机器人有限公司 Power supply control device, system and method

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