CN104426197A - Solar battery array power supplying and charging control system - Google Patents
Solar battery array power supplying and charging control system Download PDFInfo
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- CN104426197A CN104426197A CN201310408347.5A CN201310408347A CN104426197A CN 104426197 A CN104426197 A CN 104426197A CN 201310408347 A CN201310408347 A CN 201310408347A CN 104426197 A CN104426197 A CN 104426197A
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Abstract
The invention discloses a solar battery array power supplying and charging control system. A manner of combining a plurality of solar battery arrays can be used for supplying power to a load and charging a storage battery. The system disclosed by the invention has a simple circuit, and is high in reliability and high in control precision; and during a satellite illumination period, stable power supply of a bus load and stable storage battery charging can be guaranteed, so that the service life of the storage battery can be effectively prolonged and the on-orbit utilization time is prolonged. The circuit of the solar battery array bus power supply and storage battery charging control system carries out switching-on/off control on an MOSFET in a PWM control manner, so that surplus solar battery array power can be shunted and the storage battery is controlled to be charged by constant current.
Description
Technical field
The present invention relates to solar cell powersupply system control logic, particularly a kind of solar battery array power, charge control system.
Background technology
The core system that power-supply system regulates as whole energy source of star, provides the continual and steady energy for whole star flies in-orbit.Power-supply system carries out reasonable distribution by shunt circuit, charger assembled by several branch current circuit, the solar battery array energy of functional circuit such as electric discharge regulating circuit, bus filtering etc. to input, completes energy-storage battery charging, maintains the stable of bus under different loads working condition.
In order to improve the utilance of solar battery array, charger assembled by several branch current control adopts combined array power conditioning technology, combines S full adjustment on the basis of bus and Switching Shunt regulation technology
3the advantage of R and mixed type power conditioning technology, realizes two territories and controls, both overcame S
3r system three territory controls too complicated, charge controller to be directly connected on bus bring power loss bigger than normal shortcoming, overcome again solar battery array point battle array in mixed type power conditioning technology simultaneously and design the not high shortcoming of the solar cell energy utilization rate brought, improve the utilance of solar battery array.
Summary of the invention
The problem that the present invention solves is to provide that a kind of solar battery array is powered, charge control system, to solve the not high problem of existing solar cell using energy source.
For solving the problem, the invention provides that a kind of solar battery array is powered, charge control system, comprising: charger assembled by several branch current circuit major loop, solar battery array and control circuit; Described charger assembled by several branch current circuit major loop and solar battery array are connected in parallel on load two ends, described control circuit one terminating load, an other termination charger assembled by several branch current circuit major loop; Described control circuit exports control signal according to bearing power to charger assembled by several branch current circuit major loop; When illumination period bearing power reduces, charger assembled by several branch current circuit major loop provides bearing power, and charger assembled by several branch current circuit major loop provides battery charging power, and surplus power is shunted over the ground; When illumination period bearing power increases, charger assembled by several branch current circuit major loop reduces battery charging power in order to supplementary bearing power.
Further, described charger assembled by several branch current circuit major loop comprises: diverter branch and charging paths, and charge switch; Described charge switch connects or disconnects charging paths according to from power-supply system command request.
Further, described charger assembled by several branch current circuit major loop comprises: diode branch and metal-oxide-semiconductor branch road; Described diode branch positive pole connects solar battery array, and negative pole connects load; Described metal-oxide-semiconductor branch road D pole (drain electrode) connects described diode branch positive pole and solar battery array, and S pole (source electrode) takes back road, and G pole (grid) is interconnected; Also comprise: charging diode and switch MOS pipe, described charging diode positive pole connects described diode branch positive pole, the D pole of described metal-oxide-semiconductor branch road, the D pole of negative pole connecting valve metal-oxide-semiconductor simultaneously, the S pole of described switch MOS pipe connects the storage battery of charging, G pole connection control circuit.
Further, also switch is connected with between the positive pole of described diode branch and the positive pole of charging diode.
Further, described charger assembled by several branch current circuit major loop also comprises single-pole double-throw switch (SPDT), and double-throw connects the G pole of shunting metal-oxide-semiconductor and the G pole of charging metal-oxide-semiconductor respectively, the output of cutter connection control circuit, when battery capacity is insufficient, the G pole of control circuit signal access charging metal-oxide-semiconductor; When battery capacity is sufficient, the G pole of control circuit signal access shunting metal-oxide-semiconductor.
Further, described charger assembled by several branch current circuit major loop shunt circuit adopts 3 level shunt modes, and every level shunt ability is not less than 8A, the solar battery array power output be attached thereto all can be shunted.
Further, described system is under battery state of charge, K2, K4, K6, K8, K10, K12 swing to Q15, Q18, Q21, Q22, Q25, Q28 control as charge in batteries, MEA control level drives Q15, Q18, Q21, Q22, Q25, Q28, because battery tension is lower than busbar voltage, solar battery array power flow direction storage battery; Wherein solar battery array C4, C5, C6 can be a group storage battery and charges, C10, C11, C12 can be another group storage battery and charge, wherein C6, C12 circuit is provided with current constant control function, BEA control level drives Q19, Q20 and Q29, Q30, when sampling charging current and being greater than the constant current value of setting, make Q19, Q20 and Q29, Q30 progresses into branching part, entirely shunt work, control single group storage battery charging current and be not more than C4, C5 or C10, C11 sum.
Solar battery array provided by the present invention is powered, charge control system, optimizes solar battery array power control administration.Solar battery array power can directly be supplied to bus load, and when charging is required, solar battery array power also can be directly passed to storage battery, and solar battery array power loss is lower.Whole system has that circuit is simple, reliability is high, and control precision is feature accurately, is specially adapted to spacecraft Energy control unit.
Accompanying drawing explanation
The solar battery array that Fig. 1 provides for the embodiment of the present invention is powered, charge control system power adjustments control information flow graph;
The solar battery array that Fig. 2 (a) and (b) provide for the embodiment of the present invention is powered, the electrical block diagram of charge control system;
The solar battery array that Fig. 3 provides for the embodiment of the present invention is powered, the charger assembled by several branch current circuit major loop of charge control system forms power cell circuit diagram;
The solar battery array that Fig. 4 provides for the embodiment of the present invention is powered, the logic relation picture of charge control system.
Embodiment
Hereafter in conjunction with the accompanying drawings and embodiments the present invention is further elaborated.
Please refer to Fig. 1, solar battery array provided by the present invention is powered, charge control system: the power output of solar battery array preferentially meets the demand of load, unnecessary power section is that batteries is charged, if chargeable solar battery array electric current is greater than the charge in batteries constant current value of setting, export unnecessary part to solar cell to shunt, the advantage of this mode utilizes solar battery array power output to greatest extent.Solar battery array export the energy first to guarantee bus use, then guarantee charge in batteries, be finally only shunting, so the groundwork order of charging shunting regulating circuit be voltage stabilizing, constant current charge and shunting.
Please refer to Fig. 2 (a), the solar battery array that the embodiment of the present invention provides powered, charge control system, comprising: charger assembled by several branch current circuit major loop, solar battery array and control circuit; Described charger assembled by several branch current circuit major loop and solar battery array are connected in parallel on load two ends, described control circuit one terminating load, an other termination charger assembled by several branch current circuit major loop; Described control circuit exports control signal according to bearing power to charger assembled by several branch current circuit major loop; When illumination period bearing power reduces, charger assembled by several branch current circuit major loop provides bearing power, and charger assembled by several branch current circuit major loop provides battery charging power, and surplus power is shunted over the ground; When illumination period bearing power increases, charger assembled by several branch current circuit major loop reduces battery charging power in order to supplementary bearing power.Described charger assembled by several branch current circuit major loop comprises: diverter branch and charging paths, and charge switch; Described charge switch connects or disconnects charging paths according to from power-supply system command request.
The solar battery array that Fig. 2 (b) provides for another one embodiment of the present invention is powered, the structural representation of charge control system, the difference of the circuit that Fig. 2 (b) and Fig. 2 (a) provide is to eliminate charging paths, and solar battery array power output only can be supplied to bus load or be shunted by shunting metal-oxide-semiconductor.In the embodiment shown in Fig. 2 (a), described charger assembled by several branch current circuit major loop shunt circuit adopts 3 level shunt modes, and every level shunt ability is not less than 8A, the solar battery array power output be attached thereto all can be shunted.In embodiment shown in Fig. 2 (a), system is under battery state of charge, K2, K4, K6, K8, K10, K12 swing to Q15, Q18, Q21, Q22, Q25, Q28 control as charge in batteries, the main error of MEA(is amplified) control level driving Q15, Q18, Q21, Q22, Q25, Q28, because battery tension is lower than busbar voltage, solar battery array power flow direction storage battery; Wherein solar battery array C4, C5, C6 can be a group storage battery and charges, C10, C11, C12 can be another group storage battery and charge, wherein C6, C12 circuit is provided with current constant control function, BEA(storage battery error amplify) control level drive Q19, Q20 and Q29, Q30, when sampling charging current and being greater than the constant current value of setting, make Q19, Q20 and Q29, Q30 progresses into branching part, entirely shunt work, control single group storage battery charging current and be not more than C4, C5 or C10, C11 sum.Solar battery array bussed supply and Battery charge controller circuit system carry out switch control rule with PWM control mode to metal-oxide-semiconductor, and described metal-oxide-semiconductor can adopt N-type MOSFET to manage.
According to the described shunting of charger assembled by several branch current circuit major loop and the requirement of other performances, the technology calculating the performance parameter of each element of described charger assembled by several branch current circuit major loop is well known to those skilled in the art, is not described in detail in this.In other embodiments of the invention, also shunting progression can be set flexibly according to performance need, and adaptability revision is done to circuit structure.
Fig. 3 is the circuit diagram of described charger assembled by several branch current circuit major loop Component units; Described charger assembled by several branch current circuit major loop comprises: by the first diode D1 and the second diode D2 diode branch in series, by the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 metal-oxide-semiconductor branch road in series; Described diode branch positive pole connects solar battery array, and negative pole connects load; Described metal-oxide-semiconductor branch road D pole (drain electrode) connects described diode branch positive pole and solar battery array, and S pole (source electrode) takes back line, and G pole (grid) is interconnected; Also comprise: charging diode D3 and switch MOS pipe Q3, described charging diode D3 positive pole connects described diode branch positive pole, the D pole of described metal-oxide-semiconductor branch road, the D pole of negative pole connecting valve metal-oxide-semiconductor simultaneously, the S pole of described switch MOS pipe connects the storage battery of charging, G pole connection control circuit.Also be connected with K switch 1, K1 between the positive pole of described diode branch and the positive pole of charging diode D3 and can disconnect charge circuit as switch.
Further, described charger assembled by several branch current circuit major loop also comprises single-pole double-throw switch (SPDT), and double-throw connects the G pole of shunting metal-oxide-semiconductor and the G pole of charging metal-oxide-semiconductor respectively, the output of cutter connection control circuit, when battery capacity is insufficient, the G pole of control circuit signal access charging metal-oxide-semiconductor; When battery capacity is sufficient, the G pole of control circuit signal access shunting metal-oxide-semiconductor.
To sum up, solar battery array provided by the present invention is powered, charge control system: utilize the power adjustment unit that combined array power conditioning technology designs, and is also the basic composition circuit of regulation technology.Its operation principle is: the energy that solar battery array exports is directly delivered on primary power source bus through diode D1, D2, two metal-oxide-semiconductors Q1, Q2 of diode front end are as the isocon of shunt regulating, Q3 as controlling the adjustable pipe of charge in batteries, solar battery array export through diode D3 and metal-oxide-semiconductor Q3 be charge in batteries; The drive level of Q1, Q2 is G1, G2 respectively, and the reference potential of drive circuit is from the reference level of bus, and control signal is from busbar voltage; The drive level of Q3 is G3, and the reference potential of drive circuit is from the charging current of busbar voltage and batteries; K1 can disconnect charge circuit as switch.
Please refer to Fig. 4, Fig. 4 be Fig. 2 (a) of the present invention, solar battery array that Fig. 2 (b) illustrated embodiment provides is powered, the logic relation picture of charge control system.Wherein, SR1 corresponding diagram 2(b) in the circuit unit of C1, D1, D2, Q1, Q2, U1 composition, analogize in proper order, SR9 corresponding diagram 2(b) in the circuit unit of C9, D11, D12, Q11, Q12, U6 composition; SR4 corresponding diagram 2(a) in C4, D13, D14, Q13, Q14, K1, D15, Q15, K2, U7 composition circuit unit, analogize in proper order, SR12 corresponding diagram 2(a) in C12, D28, D29, Q29, Q30, K11, D30, Q28, K12, U13, U14, D32, BATT-B, R2 composition circuit unit.
(1) as when storage battery constant current charge, SR1 ~ SR3, SR7 ~ SR9 are bussed supply, and SR4 ~ SR6, SR10 ~ SR12 are to charge in batteries, and wherein SR6 and SR12 controls storage battery constant current charge electric current by BEA;
(2) when bus current increases, when battery charging current is lower than constant current value, SR6 and SR12 exits BEA and controls, and charging current changes according to bus load variations, and two group storage battery charging currents are that whole solar battery array electric current deducts bus load current;
(3) after battery capacity is full of, SR4 ~ SR6, SR10 ~ SR12 charging territory is closed, and enters point basin step by step of SR1 ~ SR6 and SR7 ~ SR12.When solar battery array can not meet bus load, bus transition is to battery discharging territory.
Solar battery array provided by the present invention is powered, charge control system is according to the need for electricity of bus load, meet bus stable while solar battery array export rich power be supplied to charge in batteries, control circuit make use of the I-V constant current output characteristic of solar cell, and regulating circuit can complete charging by the demand for control of system and regulate and shunt regulating control; When illumination period bearing power is lighter, shunt circuit work provides bearing power, and the work of charger assembled by several branch current circuit provides battery charging power, and surplus power is shunted over the ground; Increase in illumination period bearing power, charging shunting regulating circuit reduces battery charging power in order to supplementary bearing power.
Solar battery array provided by the invention is powered, charge control system has the advantages that control logic is simple, reliability is high, the solar battery array that inventing provides is powered, charge control system is applied in low-orbit satellite model power-supply controller of electric, and enter with this satellite and fly in-orbit, this system is through indices requirement examination of flying in-orbit.And this unit is in good condition in orbit, function is normal, and unit bus load supplying, charge in batteries function are normal, demonstrate reliability and the fail safe of unit.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection range of technical solution of the present invention.
Claims (7)
1. solar battery array power, a charge control system, it is characterized in that, comprising: charger assembled by several branch current circuit major loop, solar battery array and control circuit; Described charger assembled by several branch current circuit major loop and solar battery array are connected in parallel on load two ends, described control circuit one terminating load, an other termination charger assembled by several branch current circuit major loop; Described control circuit exports control signal according to bearing power to charger assembled by several branch current circuit major loop; When illumination period bearing power reduces, charger assembled by several branch current circuit major loop provides bearing power, and charger assembled by several branch current circuit major loop provides battery charging power, and surplus power is shunted over the ground; When illumination period bearing power increases, charger assembled by several branch current circuit major loop reduces battery charging power in order to supplementary bearing power.
2. power according to a kind of solar battery array according to claim 1, charge control system, it is characterized in that, described charger assembled by several branch current circuit major loop comprises: diverter branch and charging paths, and charge switch; Described charge switch connects or disconnects charging paths according to from power-supply system command request.
3. power according to a kind of solar battery array according to claim 1, charge control system, it is characterized in that, described charger assembled by several branch current circuit major loop comprises: diode branch and metal-oxide-semiconductor branch road; Described diode branch positive pole connects solar battery array, and negative pole connects load; Described metal-oxide-semiconductor branch road D pole connects described diode branch positive pole and solar battery array, and S pole takes back line, and G pole is interconnected; Also comprise: charging diode and switch MOS pipe, described charging diode positive pole connects described diode branch positive pole, the D pole of described metal-oxide-semiconductor branch road, the D pole of negative pole connecting valve metal-oxide-semiconductor simultaneously, the S pole of described switch MOS pipe connects the storage battery of charging, G pole connection control circuit.
4. power according to a kind of solar battery array according to claim 3, charge control system, it is characterized in that, between the positive pole of described diode branch and the positive pole of charging diode, be also connected with switch.
5. power according to a kind of solar battery array according to claim 1, charge control system, it is characterized in that, described charger assembled by several branch current circuit major loop also comprises single-pole double-throw switch (SPDT), double-throw connects the G pole of Switching Shunt metal-oxide-semiconductor and the G pole of charging metal-oxide-semiconductor respectively, the output of cutter connection control circuit, when battery capacity is insufficient, the G pole of control circuit signal access charging metal-oxide-semiconductor; When battery capacity is sufficient, the G pole of control circuit signal access shunting metal-oxide-semiconductor.
6. power according to a kind of solar battery array according to claim 1, charge control system, it is characterized in that, described charger assembled by several branch current circuit major loop shunt circuit adopts 3 level shunt modes, and every level shunt ability is not less than 8A, the solar battery array power output be attached thereto all can be shunted.
7. power according to solar battery array according to claim 1, charge control system, it is characterized in that, described system is under battery state of charge, K2, K4, K6, K8, K10, K12 swing to Q15, Q18, Q21, Q22, Q25, Q28 control as charge in batteries, MEA control level drives Q15, Q18, Q21, Q22, Q25, Q28, because battery tension is lower than busbar voltage, solar battery array power flow direction storage battery; Wherein solar battery array C4, C5, C6 can be a group storage battery and charges, C10, C11, C12 can be another group storage battery and charge, wherein C6, C12 circuit is provided with current constant control function, BEA control level drives Q19, Q20 and Q29, Q30, when sampling charging current and being greater than the constant current value of setting, make Q19, Q20 and Q29, Q30 progresses into branching part, entirely shunt work, control single group storage battery charging current and be not more than C4, C5 or C10, C11 sum.
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| CN201310408347.5A CN104426197A (en) | 2013-09-10 | 2013-09-10 | Solar battery array power supplying and charging control system |
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| CN201310408347.5A CN104426197A (en) | 2013-09-10 | 2013-09-10 | Solar battery array power supplying and charging control system |
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