CN103117581B - Solar mobile power supply - Google Patents
Solar mobile power supply Download PDFInfo
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- CN103117581B CN103117581B CN201310058213.5A CN201310058213A CN103117581B CN 103117581 B CN103117581 B CN 103117581B CN 201310058213 A CN201310058213 A CN 201310058213A CN 103117581 B CN103117581 B CN 103117581B
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Abstract
A solar mobile power supply comprises a single chip microcomputer, a storage cell, a solar cell panel, a charging circuit, an inverse connecting protective circuit and a voltage sampling circuit. The charging circuit is used for controlling charge of the solar cell panel to the storage cell, and the voltage sampling circuit is used for acquiring output voltage of the storage cell and the solar cell panel and outputting storage cell sampling voltage and solar cell panel sampling voltage. A first metal oxide semiconductor (MOS) tube and a second MOS tube are adopted in the charging circuit to, control is performed through the single chip microcomputer, inverse charging can be effectively avoided, and the solar mobile power supply is protected. In addition, the inverse connecting protective circuit can prevent the storage cell from continuously discharging when connected inversely, and protects the storage cell. Furthermore, the single chip microcomputer and a common analog circuit are connected, a circuit structure is simplified, the circuit reliability is improved, and production cost is reduced.
Description
Technical field
The present invention relates to portable power source technical field, particularly relate to a kind of solar energy movable power supply.
Background technology
A kind of portable charger integrating power supply and charge function of portable power source, the feature such as usually have that capacity is large, purposes is many, volume is little, the life-span is long and safe and reliable, can whenever and wherever possible for the multiple digital products such as mobile phone, digital camera, MP3, MP4, PDA, palmtop PC, handheld device be powered or standby charging.Along with the development of portable power source, there is the portable power source with solar panel, in use can charged by sunlight thus reach the object of supplying electricity.
But the voltage produced due to solar panel changes along with the change of intensity of illumination, and the spread of voltage of generation, easily produces reversed charge when voltage is lower, and the service time shortening portable power source even may damage portable power source.Meanwhile, when manufacturing and use has the portable power source of solar panel, the electrode of the output of solar panel and storage battery can be connect instead unavoidably, making battery discharging even damage storage battery.In addition, the general portable power source with solar panel adopts pure analog circuit to build, and circuit structure is more complicated, and circuit operational reliability is poor, and production cost is higher.
Summary of the invention
Based on this, be necessary easily to produce reversed charge for the general portable power source with solar panel, electrode connects and cause battery discharging even to damage storage battery and circuit structure more complicated problem inverse time, provide one and can not produce reversed charge, connect inverse time storage battery and do not discharge and the better simply solar energy movable power supply of circuit structure.
A kind of solar energy movable power supply; comprise single-chip microcomputer, storage battery, solar panel, charging circuit, reverse-connection protection circuit and voltage sampling circuit; described charging circuit is for controlling the charging of solar panel to storage battery; described voltage sampling circuit is for gathering the output voltage of described storage battery and described solar panel and exporting storage battery sampled voltage and cell panel sampled voltage
Described charging circuit comprises the first metal-oxide-semiconductor, second metal-oxide-semiconductor, first electric capacity, first triode, first resistance, second resistance and the 3rd resistance, the drain electrode of described first metal-oxide-semiconductor connects the positive pole of described solar panel, source electrode connects the source electrode of described second metal-oxide-semiconductor respectively, one end of first resistance and one end of the first electric capacity, grid connects the other end of described first resistance respectively, the other end of described first electric capacity, the grid of described second metal-oxide-semiconductor and one end of described second resistance, the drain electrode of described second metal-oxide-semiconductor is for connecing the positive pole of described storage battery, the collector electrode of the first triode described in another termination of described second resistance, the base stage of described first triode connects described single-chip microcomputer by described 3rd resistance, the emitter of described first triode and the negative pole of described solar panel ground connection respectively,
Described reverse-connection protection circuit comprises the 3rd metal-oxide-semiconductor, the 4th resistance and the 5th resistance, the negative pole of described storage battery connects the drain electrode of described 3rd metal-oxide-semiconductor, the source electrode of described 3rd metal-oxide-semiconductor connects one end and the ground connection of described 4th resistance respectively, grid connects the other end of described 4th resistance and one end of described 5th resistance respectively, the positive pole of storage battery described in another termination of described 5th resistance;
Described voltage sampling circuit comprises the 6th resistance, 7th resistance, second electric capacity, first diode, 8th resistance, 9th resistance, 3rd electric capacity and the second diode, one end of described 6th resistance is for connecing the positive pole of described storage battery, the other end connects one end of described second electric capacity respectively, one end of described 7th resistance and the negative pole of described first diode, the positive pole of solar panel described in one termination of described 8th resistance, the other end connects one end of described 9th resistance respectively, one end of described 3rd electric capacity and the negative pole of described second triode, the other end of described second electric capacity, the other end of the 7th resistance, the positive pole of the first diode, the other end of the 9th resistance, the other end of the 3rd electric capacity and the positive pole of described second diode ground connection respectively, the public connecting end of the negative pole of described 6th resistance, the second electric capacity, the 7th resistance and the first diode exports described storage battery sampled voltage to described single-chip microcomputer, the public connecting end of the negative pole of described 8th resistance, the 9th resistance, the 3rd electric capacity and the second diode exports described cell panel sampled voltage to described single-chip microcomputer,
Described single-chip microcomputer prestores the first storage battery threshold voltage, the second storage battery threshold voltage and cell panel threshold voltage, and when described cell panel sampled voltage is lower than described cell panel threshold voltage, described Single-chip Controlling turns off described charging circuit; When described cell panel higher than described cell panel threshold voltage and described storage battery sampled voltage higher than described first storage battery threshold voltage time, charging circuit described in described Single-chip Controlling conducting, described solar panel starts described charge in batteries, until when described storage battery sampled voltage is higher than described second storage battery threshold voltage, described Single-chip Controlling turns off described charging circuit, and described solar panel stops described charge in batteries; Wherein, described first storage battery threshold voltage is lower than described second storage battery threshold voltage.
Wherein in an embodiment, also comprise discharge circuit, described discharge circuit comprises electric discharge major loop, discharge protection circuit and current sampling circuit, described single-chip microcomputer also prestores first threshold electric current and Second Threshold electric current, described first threshold electric current is lower than described Second Threshold electric current, described current sampling circuit is for the electric current that gathers in described electric discharge major loop and export sample rate current to described single-chip microcomputer, described discharge protection circuit is used for turning off described major loop lower than described first threshold electric current or at described sample rate current higher than controlling during described Second Threshold electric current at described sample rate current,
Described electric discharge major loop comprises load socket, the 4th metal-oxide-semiconductor and the tenth resistance, one binding post of described load socket connects the positive pole of described storage battery, another binding post connects the drain electrode of described 4th metal-oxide-semiconductor, the source electrode of described 4th metal-oxide-semiconductor connects one end of described tenth resistance, the other end ground connection of described tenth resistance;
Described discharge protection circuit comprises the 11 resistance, the 12 resistance, the 13 resistance and the second triode, the positive pole of storage battery described in one termination of described 11 resistance, the other end connects one end of described 12 resistance and the grid of described 4th metal-oxide-semiconductor respectively, the collector electrode of the second triode described in another termination of described 12 resistance, the base stage of described second triode connects described single-chip microcomputer, grounded emitter by described 13 resistance;
Described current sampling circuit comprises the 14 resistance and the 4th electric capacity, and described 4th Capacitance parallel connection is connected to the two ends of described tenth resistance, the source electrode of the 4th metal-oxide-semiconductor described in a termination of described 14 resistance, single-chip microcomputer described in another termination.
Wherein in an embodiment, described solar energy movable power supply also comprises charged state selection circuit, and described charged state selection circuit enters state to be charged for selecting described solar energy movable power supply or exits state to be charged,
Described charged state selection circuit comprises the 15 resistance and select button, single-chip microcomputer described in a termination of described 15 resistance, and the other end is by described select button ground connection.
Wherein in an embodiment, described solar energy movable power supply also comprises indicating circuit, and described indicating circuit is used to indicate described solar energy movable power supply and enters charged state, overcharge condition, over-discharge state and overcurrent condition,
Described indicating circuit comprises charging indicator light, overcharge indicator light, overdischarge indicator light, over current lamp, the 16 resistance, the 17 resistance, the 18 resistance and the 19 resistance, described charging indicator light connects described single-chip microcomputer by described 16 resistance, described overcharge indicator light connects described single-chip microcomputer by described 17 resistance, described overdischarge indicator light connects described single-chip microcomputer by described 18 resistance, and described over current lamp connects described single-chip microcomputer by described 19 resistance.
Wherein in an embodiment, also comprise voltage stabilizing circuit, described voltage stabilizing circuit is used for providing stable output voltage for the work of described single-chip microcomputer,
Described voltage stabilizing circuit comprises the 5th electric capacity, the 6th electric capacity and three-terminal voltage-stabilizing pipe, the input of described three-terminal voltage-stabilizing pipe is for connecing the positive pole of described storage battery, output is used for connecing described single-chip microcomputer, earth terminal ground connection, the input of three-terminal voltage-stabilizing pipe described in one termination of described 5th electric capacity, other end ground connection, the output of three-terminal voltage-stabilizing pipe described in a termination of described 6th electric capacity, other end ground connection.
Wherein in an embodiment, also comprise fuse, described fuse is connected in the current circuit of described storage battery.
Above-mentioned solar energy movable power supply, is adopted the first metal-oxide-semiconductor and the second metal-oxide-semiconductor and is controlled by single-chip microcomputer, effectively can avoid reversed charge, protect solar energy movable power supply in charging circuit.Meanwhile, reverse-connection protection circuit can continue electric discharge connecing inverse time blocking-up storage battery, protects storage battery.In addition, single-chip microcomputer and common analog circuit are built, simplifies circuit structure, improve the reliability of circuit, reduce production cost.
Accompanying drawing explanation
Fig. 1 is the charging circuit schematic diagram of solar energy movable power supply of the present invention;
Fig. 2 is the reverse-connection protection circuit of solar energy movable power supply of the present invention and the schematic diagram of discharge circuit;
Fig. 3 is the schematic diagram of the voltage sampling circuit of solar energy movable power supply of the present invention;
Fig. 4 is the catenation principle figure of the voltage stabilizing circuit of solar energy movable power supply of the present invention, indicating circuit, state selecting circuit and single-chip microcomputer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, in one embodiment, a kind of solar energy movable power supply, comprises single-chip microcomputer U1, storage battery BT, solar panel SR, charging circuit, reverse-connection protection circuit and voltage sampling circuit.Charging circuit is for controlling the charging of solar panel SR to storage battery BT, and voltage sampling circuit is for gathering the output voltage of storage battery BT and solar panel SR and exporting storage battery sampled voltage and cell panel sampled voltage.The single-chip microcomputer U1 that the present embodiment adopts is PIC16F676 single-chip microcomputer.
As shown in Figure 1, charging circuit comprises the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2, the first electric capacity C1, the first triode Q1, the first resistance R1, the second resistance R2 and the 3rd resistance R3.The drain electrode of the first metal-oxide-semiconductor M1 connects the positive pole of solar panel SR, source electrode connects one end of the source electrode of the second metal-oxide-semiconductor M2, one end of the first resistance R1 and the first electric capacity C1 respectively, and grid connects one end of the other end of the first resistance R1, the other end of the first electric capacity C1, the grid of the second metal-oxide-semiconductor M2 and the second resistance R2 respectively.The drain electrode of the second metal-oxide-semiconductor M2 is for connecing the positive pole (the wiring Node B+see Fig. 1 and Fig. 2) of storage battery BT, the collector electrode of another termination first triode Q1 of the second resistance R2, the base stage of the first triode Q1 meets single-chip microcomputer U1 by the 3rd resistance R3, in the present embodiment, the base stage of the first triode Q1 connects the pin 9 (the wiring node CSW see Fig. 1 and Fig. 4) of single-chip microcomputer U1 by the 3rd resistance R3, the emitter of the first triode Q1 and the negative pole of solar panel SR ground connection respectively.Wherein, first metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor all adopt P-channel enhancement type field-effect transistor, first triode Q1 is NPN pipe, in charging process, single-chip microcomputer U1 controls the first triode Q1 and is in off state, grid-the source voltage of the first metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor M2 reaches cut-in voltage, form P-type conduction raceway groove, when the output current of solar panel SR is larger, electric current flows through the drain electrode of the first metal-oxide-semiconductor M1 and source electrode and the PN junction of avalanche breakdown second metal-oxide-semiconductor M2 enters storage battery BT, thus accumulators BT charges.When the output voltage of solar panel SR slightly fluctuates because of illumination condition change, the backflow of the PN junction electric current capable of blocking of the first metal-oxide-semiconductor M1, thus avoid the generation of reversed charge phenomenon.
As shown in Figure 2, reverse-connection protection circuit comprises the 3rd metal-oxide-semiconductor M3, the 4th resistance R4 and the 5th resistance R5.The negative pole of storage battery BT connects the drain electrode of the 3rd metal-oxide-semiconductor M3, the source electrode of the 3rd metal-oxide-semiconductor M3 connects one end and the ground connection of the 4th resistance R4 respectively, grid connects the other end of the 4th resistance R4 and one end of the 5th resistance R5 respectively, the positive pole of another termination storage battery BT of the 5th resistance R5.Wherein.3rd metal-oxide-semiconductor M3 is n channel enhancement type field effect transistor.Before solar panel SR charges to storage battery BT, the positive pole of solar panel SR needs to be connected (the wiring Node B+see in Fig. 1 and Fig. 2) with the positive pole of storage battery BT, now, 3rd metal-oxide-semiconductor M3 grid-source voltage reaches cut-in voltage, form N-type conducting channel, solar panel SR starts to charge to storage battery BT.When the output of solar panel SR and the electrode of storage battery BT connect inverse time; namely when the negative pole of solar panel SR is connected with the positive pole of storage battery BT; grid-the source voltage of the 3rd metal-oxide-semiconductor M3 is zero; conducting channel can not be formed; 3rd metal-oxide-semiconductor M3 is in cut-off state; block the electric discharge of storage battery BT, effectively protect storage battery BT.
As shown in Figure 3, voltage sampling circuit comprises the 6th resistance R6, the 7th resistance R7, the second electric capacity C2, the first diode D1, the 8th resistance R8, the 9th resistance R9, the 3rd electric capacity C3 and the second diode D2.One end of 6th resistance R6 is for connecing the positive pole (the wiring Node B+see Fig. 2 and Fig. 3) of storage battery BT, and the other end connects the negative pole of one end of the second electric capacity C2, one end of the 7th resistance R7 and the first diode D1 respectively.The positive pole (the wiring node S+ see Fig. 1 and Fig. 3) of the one termination solar panel SR of the 8th resistance R8, the other end connects the negative pole of one end of the 9th resistance R9, one end of the 3rd electric capacity C3 and the second triode Q2 respectively.The positive pole ground connection respectively of the positive pole of the other end of the second electric capacity C2, the other end of the 7th resistance R7, the first diode D1, the other end of the 9th resistance R9, the other end of the 3rd electric capacity C3 and the second diode D2.The public connecting end of the negative pole of the 6th resistance R6, the second electric capacity C2, the 7th resistance R7 and the first diode D1 exports storage battery sampled voltage to single-chip microcomputer U1, in the present embodiment, storage battery sampled voltage is delivered to the pin 10 (the wiring Node B C see Fig. 3 and Fig. 2) of single-chip microcomputer U1.The public connecting end of the negative pole of the 8th resistance R8, the 9th resistance R9, the 3rd electric capacity C3 and the second diode D2 exports cell panel sampled voltage to single-chip microcomputer U1, in the present embodiment, cell panel sampled voltage is delivered to the pin 8 (the wiring node SC see Fig. 3 and Fig. 4) of single-chip microcomputer U1.
As shown in Figure 4, single-chip microcomputer U1 prestores the first storage battery threshold voltage, the second storage battery threshold voltage and cell panel threshold voltage.When cell panel sampled voltage is lower than cell panel threshold voltage, the pin 9 of single-chip microcomputer U1 exports the base stage of high level to the first triode Q1, first triode Q1 conducting, grid-the source voltage of the first metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor M2 is zero, first metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor M2 is in cut-off state, thus charging circuit is turned off.When cell panel higher than cell panel threshold voltage and storage battery sampled voltage higher than the first storage battery threshold voltage time, the base stage of pin 9 output low level to the first triode Q1 of single-chip microcomputer U1, first triode Q1 turns off, grid-the source voltage of the first metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor reaches cut-in voltage, charging circuit is switched on, solar panel SR starts to charge to storage battery BT, until when storage battery sampled voltage is higher than the second storage battery threshold voltage, single-chip microcomputer U1 pin 9 exports high level, control to turn off charging circuit, thus make solar panel SR stop charging to storage battery BT, wherein, the first storage battery BT threshold voltage is lower than the second storage battery threshold voltage.
As shown in Figure 2, in the particular embodiment, solar energy movable power supply also comprises discharge circuit.Discharge circuit comprises electric discharge major loop, discharge protection circuit and current sampling circuit.Single-chip microcomputer U1 also prestores first threshold electric current and Second Threshold electric current; first threshold electric current is lower than Second Threshold electric current; current sampling circuit for gather electric discharge major loop in electric current and export sample rate current to single-chip microcomputer U1, discharge protection circuit be used for sample rate current lower than first threshold electric current or sample rate current higher than during Second Threshold electric current control turn off major loop.
Electric discharge major loop comprises load socket CK, the 4th metal-oxide-semiconductor M4 and the tenth resistance R10.One binding post of load socket CK connects the positive pole of storage battery BT, and another binding post connects the drain electrode of the 4th metal-oxide-semiconductor M4, and the source electrode of the 4th metal-oxide-semiconductor M4 connects one end of the tenth resistance R10, the other end ground connection of the tenth resistance R10.Discharge protection circuit comprises the 11 resistance R11, the 12 resistance R12, the 13 resistance R13 and the second triode Q2.The positive pole of the one termination storage battery BT of the 11 resistance R11, the other end connects one end of the 12 resistance R12 and the grid of the 4th metal-oxide-semiconductor M4 respectively, the collector electrode of another termination second triode Q2 of the 12 resistance R12, the base stage of the second triode Q2 meets single-chip microcomputer U1 by the 13 resistance R13, grounded emitter, in the present embodiment, the base stage of the second triode Q2 connects the pin 13 (the wiring node LSW see Fig. 2 and Fig. 3) of single-chip microcomputer U1 by the 13 resistance R13.Current sampling circuit comprises the 14 resistance R14 and the 4th electric capacity C4.4th electric capacity C4 is connected in parallel in the two ends of the tenth resistance R10, the source electrode of a termination the 4th metal-oxide-semiconductor M4 of the 14 resistance R14, and the other end meets single-chip microcomputer U1, usually connects the pin 11 (the wiring node IS see Fig. 2 and Fig. 4) of single-chip microcomputer U1.Wherein, the 4th metal-oxide-semiconductor M3 is n channel enhancement type field effect transistor, and the second triode Q2 is NPN pipe.When the sample rate current that single-chip microcomputer U1 is gathered by pin 11 is lower than the first threshold electric current prestored, grid-source voltage that single-chip microcomputer U1 exports high level control conducting second triode Q2 the 4th metal-oxide-semiconductor M4 by pin 13 is zero, 4th metal-oxide-semiconductor M4 is in cut-off state, load socket CK, by open circuit, effectively avoids the overdischarge of storage battery BT.In like manner, when sample rate current is higher than Second Threshold electric current, single-chip microcomputer U1 controls the 4th metal-oxide-semiconductor M4 by the second triode Q2 and is in cut-off state, and load socket CK, by open circuit, efficiently avoid the damage of the excessive load caused of discharging current.
As shown in Figure 4, solar energy movable power supply also comprises charged state selection circuit, indicating circuit and voltage stabilizing circuit.Charged state selection circuit enters state to be charged for selecting solar energy movable power supply or exits state to be charged.Charged state selection circuit comprises the 15 resistance R15 and select button K, and one end of the 15 resistance R15 meets single-chip microcomputer U1, usually connects the pin 2 of single-chip microcomputer U1, and the other end is by select button K ground connection.Usually, only have and select to enter state to be charged by select button K, single-chip microcomputer U1 just can normally work, and could control the normal work of charging circuit and discharge circuit.
Indicating circuit is used to indicate solar energy movable power supply and enters charged state, overcharge condition, over-discharge state and overcurrent condition.Indicating circuit comprises charging indicator light L1, overcharge indicator light L2, overdischarge indicator light L3, over current lamp L4, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18 and the 19 resistance R19.Charging indicator light L1 connects the pin 3 of single-chip microcomputer U1 by the 16 resistance R16, is used to indicate solar energy movable power supply and enters charged state.Overcharge indicator light L2 connects the pin 5 of single-chip microcomputer U1 by the 17 resistance R17, be used to indicate solar energy movable power supply charging overfill.Overdischarge indicator light L3 connects the pin 6 of single-chip microcomputer U1 by the 18 resistance R18, the discharging current being used to indicate solar energy movable power supply is lower, should stop electric discharge.Over current lamp L4 connects the pin 7 of single-chip microcomputer U1 by the 19 resistance R19, and the discharging current being used to indicate solar energy movable power supply is comparatively large, may burn out load.In addition, the pin 4 of single-chip microcomputer U1 is successively by the 20 resistance R20 and the 7th electric capacity C7 ground connection.
Voltage stabilizing circuit is used for providing stable output voltage for the work of single-chip microcomputer U1.Voltage stabilizing circuit comprises the 5th electric capacity C5, the 6th electric capacity C6 and three-terminal voltage-stabilizing pipe U2.The input Vin of three-terminal voltage-stabilizing pipe U2 is for connecing the positive pole (the wiring Node B+see Fig. 2 and Fig. 4) of storage battery BT, output end vo ut is respectively used to connect one end of the pin 1 of single-chip microcomputer U1, one end of the 8th electric capacity C8 and the 9th electric capacity C9, pin 14 ground connection respectively of the other end of the 8th electric capacity C8, the other end of the 9th electric capacity C9 and single-chip microcomputer U1.The earth terminal ground connection of three-terminal voltage-stabilizing pipe U2, the input Vin of a termination three-terminal voltage-stabilizing pipe of the 5th electric capacity C5, other end ground connection, the output end vo ut of a termination three-terminal voltage-stabilizing pipe of the 6th electric capacity C6, other end ground connection.In addition, the pin 12 of single-chip microcomputer U1 is unsettled, does not define at this.In addition solar energy movable power supply also comprises fuse F1, and fuse F1 is connected in the current circuit of storage battery BT.
Above-mentioned solar energy movable power supply, is adopted the first metal-oxide-semiconductor M1 and the second metal-oxide-semiconductor M2 and is controlled by single-chip microcomputer U1, effectively can avoid reversed charge, protect solar energy movable power supply in charging circuit.Meanwhile, reverse-connection protection circuit can continue electric discharge connecing inverse time blocking-up storage battery BT, protects storage battery BT.In addition, single-chip microcomputer U1 and common analog circuit are built, circuit structure is comparatively simple, improves the reliability of circuit, reduces production cost.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (5)
1. a solar energy movable power supply; it is characterized in that; comprise single-chip microcomputer, storage battery, solar panel, charging circuit, reverse-connection protection circuit, voltage sampling circuit and discharge circuit; described charging circuit is for controlling the charging of solar panel to storage battery; described voltage sampling circuit is for gathering the output voltage of described storage battery and described solar panel and exporting storage battery sampled voltage and cell panel sampled voltage
Described charging circuit comprises the first metal-oxide-semiconductor, second metal-oxide-semiconductor, first electric capacity, first triode, first resistance, second resistance and the 3rd resistance, the drain electrode of described first metal-oxide-semiconductor connects the positive pole of described solar panel, source electrode connects the source electrode of described second metal-oxide-semiconductor respectively, one end of first resistance and one end of the first electric capacity, grid connects the other end of described first resistance respectively, the other end of described first electric capacity, the grid of described second metal-oxide-semiconductor and one end of described second resistance, the drain electrode of described second metal-oxide-semiconductor is for connecing the positive pole of described storage battery, the collector electrode of the first triode described in another termination of described second resistance, the base stage of described first triode connects described single-chip microcomputer by described 3rd resistance, the emitter of described first triode and the negative pole of described solar panel ground connection respectively,
Described reverse-connection protection circuit comprises the 3rd metal-oxide-semiconductor, the 4th resistance and the 5th resistance, the negative pole of described storage battery connects the drain electrode of described 3rd metal-oxide-semiconductor, the source electrode of described 3rd metal-oxide-semiconductor connects one end and the ground connection of described 4th resistance respectively, grid connects the other end of described 4th resistance and one end of described 5th resistance respectively, the positive pole of storage battery described in another termination of described 5th resistance;
Described voltage sampling circuit comprises the 6th resistance, 7th resistance, second electric capacity, first diode, 8th resistance, 9th resistance, 3rd electric capacity and the second diode, one end of described 6th resistance is for connecing the positive pole of described storage battery, the other end connects one end of described second electric capacity respectively, one end of described 7th resistance and the negative pole of described first diode, the positive pole of solar panel described in one termination of described 8th resistance, the other end connects one end of described 9th resistance respectively, one end of described 3rd electric capacity and the negative pole of described second diode, the other end of described second electric capacity, the other end of the 7th resistance, the positive pole of the first diode, the other end of the 9th resistance, the other end of the 3rd electric capacity and the positive pole of described second diode ground connection respectively, the public connecting end of the negative pole of described 6th resistance, the second electric capacity, the 7th resistance and the first diode exports described storage battery sampled voltage to described single-chip microcomputer, the public connecting end of the negative pole of described 8th resistance, the 9th resistance, the 3rd electric capacity and the second diode exports described cell panel sampled voltage to described single-chip microcomputer,
Described single-chip microcomputer prestores the first storage battery threshold voltage, the second storage battery threshold voltage and cell panel threshold voltage, and when described cell panel sampled voltage is lower than described cell panel threshold voltage, described Single-chip Controlling turns off described charging circuit; When described cell panel sampled voltage higher than described cell panel threshold voltage and described storage battery sampled voltage higher than described first storage battery threshold voltage time, charging circuit described in described Single-chip Controlling conducting, described solar panel starts described charge in batteries, until when described storage battery sampled voltage is higher than described second storage battery threshold voltage, described Single-chip Controlling turns off described charging circuit, and described solar panel stops described charge in batteries; Wherein, described first storage battery threshold voltage is lower than described second storage battery threshold voltage;
Described discharge circuit comprises electric discharge major loop, discharge protection circuit and current sampling circuit, described single-chip microcomputer also prestores first threshold electric current and Second Threshold electric current, described first threshold electric current is lower than described Second Threshold electric current, described current sampling circuit is for the electric current that gathers in described electric discharge major loop and export sample rate current to described single-chip microcomputer, described discharge protection circuit is used for turning off described electric discharge major loop lower than described first threshold electric current or at described sample rate current higher than controlling during described Second Threshold electric current at described sample rate current, described electric discharge major loop comprises load socket, 4th metal-oxide-semiconductor and the tenth resistance, one binding post of described load socket connects the positive pole of described storage battery, another binding post connects the drain electrode of described 4th metal-oxide-semiconductor, the source electrode of described 4th metal-oxide-semiconductor connects one end of described tenth resistance, the other end ground connection of described tenth resistance,
Described discharge protection circuit comprises the 11 resistance, the 12 resistance, the 13 resistance and the second triode, the positive pole of storage battery described in one termination of described 11 resistance, the other end connects one end of described 12 resistance and the grid of described 4th metal-oxide-semiconductor respectively, the collector electrode of the second triode described in another termination of described 12 resistance, the base stage of described second triode connects described single-chip microcomputer, grounded emitter by described 13 resistance;
Described current sampling circuit comprises the 14 resistance and the 4th electric capacity, and described 4th Capacitance parallel connection is connected to the two ends of described tenth resistance, the source electrode of the 4th metal-oxide-semiconductor described in a termination of described 14 resistance, single-chip microcomputer described in another termination.
2. solar energy movable power supply according to claim 1, it is characterized in that, described solar energy movable power supply also comprises charged state selection circuit, described charged state selection circuit enters state to be charged for selecting described solar energy movable power supply or exits state to be charged, described charged state selection circuit comprises the 15 resistance and select button, single-chip microcomputer described in one termination of described 15 resistance, the other end is by described select button ground connection.
3. solar energy movable power supply according to claim 1, it is characterized in that, described solar energy movable power supply also comprises indicating circuit, described indicating circuit is used to indicate described solar energy movable power supply and enters charged state, overcharge condition, over-discharge state and overcurrent condition, described indicating circuit comprises charging indicator light, overcharge indicator light, overdischarge indicator light, over current lamp, 16 resistance, 17 resistance, 18 resistance and the 19 resistance, described charging indicator light connects described single-chip microcomputer by described 16 resistance, described overcharge indicator light connects described single-chip microcomputer by described 17 resistance, described overdischarge indicator light connects described single-chip microcomputer by described 18 resistance, described over current lamp connects described single-chip microcomputer by described 19 resistance.
4. solar energy movable power supply according to claim 1, it is characterized in that, also comprise voltage stabilizing circuit, described voltage stabilizing circuit is used for providing stable output voltage for the work of described single-chip microcomputer, described voltage stabilizing circuit comprises the 5th electric capacity, 6th electric capacity and three-terminal voltage-stabilizing pipe, the input of described three-terminal voltage-stabilizing pipe is for connecing the positive pole of described storage battery, output is used for connecing described single-chip microcomputer, earth terminal ground connection, the input of three-terminal voltage-stabilizing pipe described in one termination of described 5th electric capacity, other end ground connection, the output of three-terminal voltage-stabilizing pipe described in one termination of described 6th electric capacity, other end ground connection.
5. solar energy movable power supply according to claim 1, is characterized in that, also comprises fuse, and described fuse is connected in the current circuit of described storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310058213.5A CN103117581B (en) | 2013-02-25 | 2013-02-25 | Solar mobile power supply |
Applications Claiming Priority (1)
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| CN201310058213.5A CN103117581B (en) | 2013-02-25 | 2013-02-25 | Solar mobile power supply |
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| CN103117581A CN103117581A (en) | 2013-05-22 |
| CN103117581B true CN103117581B (en) | 2015-06-03 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490471B (en) * | 2013-09-22 | 2015-09-30 | 浙江环球光伏科技有限公司 | Integral type photo-voltaic power supply |
| CN105515163B (en) * | 2016-01-25 | 2017-08-18 | 江苏好的节能光电科技有限公司 | Solar mobile power box |
| CN106549478A (en) * | 2016-11-03 | 2017-03-29 | 上海工程技术大学 | A kind of solar powered power supply |
| CN107733066A (en) * | 2017-11-21 | 2018-02-23 | 山东省农业科学院科技信息研究所 | A kind of solar charging electric control circuit |
| CN108011413B (en) * | 2017-11-23 | 2023-10-20 | 惠州福睿锁业有限公司 | Power supply circuit with overcharge and overdischarge protection function and power supply |
| CN110556970A (en) * | 2019-08-20 | 2019-12-10 | 朔黄铁路发展有限责任公司 | charging and discharging control circuit, power generation and supply control system and electric locomotive |
| CN110581536A (en) * | 2019-09-05 | 2019-12-17 | 宁波奇亚电控科技有限公司 | Lithium battery circuit |
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