CN106300326B - A kind of solar cell Switching Shunt protection circuit - Google Patents
A kind of solar cell Switching Shunt protection circuit Download PDFInfo
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- CN106300326B CN106300326B CN201610698241.7A CN201610698241A CN106300326B CN 106300326 B CN106300326 B CN 106300326B CN 201610698241 A CN201610698241 A CN 201610698241A CN 106300326 B CN106300326 B CN 106300326B
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- cathode
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- latching relay
- magnetic latching
- electromotive force
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/12—Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
Abstract
A kind of solar cell Switching Shunt protection circuit, including：Divided current main circuit, protection enable control circuit；Divided current main circuit includes protection access identical with solar cell submatrix quantity, each that access is protected to include shunting metal-oxide-semiconductor Q16, protect metal-oxide-semiconductor Q17, main power flow isolating diode D1, zener diode D2, energy dissipating resistance R11, energy dissipating resistance R12, current-limiting resistance R13, magnetic latching relay J18；It includes enabled control access identical with divided current main circuit quantity that protection, which enables control circuit, and each control access includes instruction power VCC, current-limiting resistance R14, current-limiting resistance R15, magnetic latching relay J19.For Switching Shunt protection circuit of the present invention using protection switching tube and the shunting concatenated mode of main circuit, realization method is simple, reduces the volume and weight of circuit, while having very high reliability.
Description
Technical field
The present invention relates to a kind of protection circuits adjusted for solar cell Switching Shunt.
Background technology
Main energy sources of the solar cell as near-earth spacecraft in orbit generally use variable connector to shunt at present
Power regulation mode, all the way shunt regulating circuit malfunction mean that corresponding solar cell submatrix power loss all the way, power supply supply
Electric energy power declines, and the in-orbit energy balance of spacecraft is caused to be worse off, and influences the in-orbit operating mode configuration of spacecraft and task completeness,
Even threaten spacecraft safety in orbit.No matter from power-supply system stable operation, power supply reliability is ensured, or navigate from improving
Its device in orbit set out by service life, maintenance spacecraft mission requirements angle, is required for the reliable of solar cell shunt regulating circuit
Property, prevent the in-orbit power loss of solar cell.
The failure of solar cell shunt regulating has become an important factor for influencing the in-orbit task of spacecraft and service life.To China
Spacecraft power supply system on-orbit fault producing cause analysis shows, due to failure caused by solar cell shunt regulating circuit malfunction
Account for about the 5% of whole failure amounts, takes safeguard measure to have become a kind of raising spacecraft in solar cell shunt regulating circuit
The necessary means of power-supply system reliability and safety.
The solar cell power regulation mode of Switching Shunt has control circuit small power consumption, and volume weight is small, efficient,
The strong advantage of regulating power, it has also become low earth-orbit satellite (LEO), Medium Earth-Orbiting Satellite (MEO), moon exploration and Mars
The preferred means of the fields spacecraft solar cell power regulations such as detection.But single channel can be brought too using Switching Shunt regulative mode
Positive electricity pond battle array power is larger, once certain way switch shunt circuit breaks down, entire solar battery array wasted power is more, must
The power loss that safeguard measure must be taken single channel failure is avoided to bring.
Less to the protected mode research of solar cell Switching Shunt circuit in the prior art, spacecraft copes with single channel at present
Solar cell shunt regulating failure mainly has following three kinds of methods：When single channel shunt regulating circuit using single switch pipe without
Protection, by increasing solar battery array design margin to cope with the power loss that single channel failure is brought, second is that per road shunt regulating
Circuit uses the protected mode of Two switches in series, switch tube faults itself situation can be answered, third, every road shunt regulating is electric
Road uses dual switch parallel way；There is following limitation in use in aforesaid way：Method one is answered by increasing surplus
Failure is brought power-supply system power supply capacity surplus excessive, cause satellite resource since every road shunt regulating circuit capacity is stronger
Waste increases development cost, and increases the power regulation burden per road shunt regulating circuit, brings heat consumption increase and shunting surplus
The problems such as reduction, method two are only applicable to the faults itself processing of switching tube, and not being suitable for drive control circuit failure causes out
The troubleshooting of pipe operation irregularity is closed, method three can be used as the effective means for reducing shunting heat consumption, but not have divided current work(
Can, the protection processing of shunt regulating circuit cannot be carried out.
Invention content
The technical problem to be solved by the present invention is to：Overcome the shortcomings of existing design, provides a kind of solar cell switch
Divided current circuit, it is small, light-weight, reliability is high, solve the problems, such as the error protection of solar cell Switching Shunt circuit.
The technical solution adopted in the present invention is：A kind of solar cell Switching Shunt protection circuit, including：Divided current master
Circuit, protection enable control circuit；Divided current main circuit includes protection access identical with solar cell submatrix quantity, each
Protection access includes shunting metal-oxide-semiconductor Q16, protection metal-oxide-semiconductor Q17, main power flow isolating diode D1, zener diode D2, disappears
It can resistance R11, energy dissipating resistance R12, current-limiting resistance R13, magnetic latching relay J18；Solar cell submatrix and main power flow every
It is connected from diode D1 anodes, common end and the shunting metal-oxide-semiconductor Q16 of solar cell submatrix and main power flow isolating diode D1
Drain electrode connection, the drain electrode of the source electrode connection protection metal-oxide-semiconductor Q17 of shunting metal-oxide-semiconductor Q16, the drive signal of shunting metal-oxide-semiconductor Q16 from
Grid accesses, and energy dissipating resistance R11 is connected between the grid and source electrode of shunting metal-oxide-semiconductor Q16；The source electrode of protection metal-oxide-semiconductor Q17 connects
Ground, grid connect contact switch one end of magnetic latching relay J18, and the contact switch other end of magnetic latching relay J18 passes through
Current-limiting resistance R13 is connected with instruction power VCC；Energy dissipating resistance R12 is connected between the grid and source electrode of protection metal-oxide-semiconductor Q17；Surely
The plus earth of diode D2, cathode is pressed to be connected with the grid of protection metal-oxide-semiconductor Q17；The a group line packets of magnetic latching relay J18 are negative
Pole, b group line packet cathode receive external remote control instruction；It includes identical with divided current main circuit quantity that protection, which enables control circuit,
Enabled control access, each control access includes instruction power VCC, current-limiting resistance R14, current-limiting resistance R15, magnetic latching relay
J19；Common end that a groups line packet anode of magnetic latching relay J18 is connect with the b group line packet anodes of magnetic latching relay J18 with
Contact switch one end of magnetic latching relay J19 connects, and the contact switch other end of magnetic latching relay J19 passes through current-limiting resistance
R14 is connect with instruction power VCC；The a groups line packet anode of magnetic latching relay J19 and the b group lines packet of magnetic latching relay J19 are just
The common end of pole connection is connected by current-limiting resistance R15 with instruction power VCC, a group line packets cathode, the b of magnetic latching relay J19
Group line packet cathode receives external remote control instruction.
The divided current main circuit further includes the counter electromotive force diode D3~D6 that disappears；Disappear counter electromotive force diode D3 cathode
The a group lines packet anode of magnetic latching relay J18 is connected, the counter electromotive force diode D3 anodes that disappear connect the counter electromotive force diode D4 that disappears
Cathode, the counter electromotive force diode D4 anodes that disappear connect a group line packet cathode of magnetic latching relay J18；Disappear counter electromotive force diode
D5 cathode connect the b group lines packet anode of magnetic latching relay J18, and the counter electromotive force diode D5 anodes that disappear connect the counter electromotive force two that disappears
Pole pipe D6 cathode, the counter electromotive force diode D6 anodes that disappear connect the b group line packet cathode of magnetic latching relay J18.
It further includes the counter electromotive force diode D7~D10 that disappears that the protection, which enables control circuit,；Disappear counter electromotive force diode D7
Cathode connects a group lines packet anode of magnetic latching relay J19, and the counter electromotive force diode D7 anodes that disappear connect two pole of counter electromotive force that disappears
Pipe D8 cathode, the counter electromotive force diode D8 anodes that disappear connect a group line packet cathode of magnetic latching relay J19；Disappear counter electromotive force two
Pole pipe D9 cathode connect the b group lines packet anode of magnetic latching relay J19, and the counter electromotive force diode D9 anodes that disappear connection disappears anti-electronic
Gesture diode D10 cathode, the counter electromotive force diode D9 anodes that disappear connect the b group line packet cathode of magnetic latching relay J19.
The advantages of the present invention over the prior art are that：
(1) this protection circuit that can be used for the adjusting of solar cell Switching Shunt of the present invention, realizes in-orbit of spacecraft
Solar cell Switching Shunt adjusts the protection of circuit during business；Protection circuit uses protection switching tube and connects with shunting main circuit
Mode, realization method is simple；It can pass through telecommand under the premise of protection is enabled provided with the enabled switch of protection
Divided current pipe is disconnected, prevents from malfunctioning when in-orbit normal work.
(2) scope of the present invention is wide, and design protection of the invention can not only answer switch tube itself device fault, also
The abnormality processing that drive control circuit failure is brought can be coped with, the major failure of solar cell shunt regulating circuit can be covered
Pattern.
(3) realization method of the present invention is easy, and design protection of the invention can be directly embedded into each quasi-representative divided current circuit
In, and independent control circuit is used, do not change original power supply control topology and control mode.
(4) reliability of the invention is high, and design protection of the invention is provided with dual-switch, only in divided current function
Under the premise of enabled, by sending surface instruction, it can just disconnect divided current pipe and execute defencive function, ensure in-orbit shunt regulating electricity
The normal work on road.
Description of the drawings
Fig. 1 is the schematic diagram that solar cell Switching Shunt of the present invention protects circuit.
Specific implementation mode
The major function of solar cell Switching Shunt protection circuit is to adjust circuit to solar cell Switching Shunt to protect
Shield can avoid solar cell submatrix power loss caused by shunting tube short circuit or shunting tube drive circuit failure, realize in-orbit
Solar cell energy conservation during business, as shown in Figure 1, the invention discloses a kind of solar cell Switching Shunts to protect circuit, packet
Include divided current main circuit, protection enables control circuit.
Divided current main circuit is used to carry out break-make control to solar cell shunt access, per the shunting of road solar cell submatrix
It adjusts access and devises protection switching tube and diverting switch pipe series system, shunt regulating circuit normal work can not influenced
Under the premise of realize the road solar cell submatrix power defencive function, to ensure that reliability.It is protected in divided current main circuit
Instruction can be protected by ground remote control instruction execution by protecting the design for being turned on or off and forbidding guard mode of switching tube
It is sent out by the direct telecommand in ground.In the case where forbidding guard mode, protection instruction can not execute divided current function.But in the sun
During cell shunt protection carries out, forbid protection instruction that can interrupt defencive function.Solar cell shunting is logical under normal circumstances
Road, which is in, forbids guard mode.When solar cell shunt access short trouble, need to first send the enabled instruction of protection keeps the sun electric
Pond divided current circuit is in defencive function enabled state, then connects protection act and execute switch.It is opened when protecting to protect in circuit
It closes pipe and is off state, protection act is completed.
In addition, to ensure power supply safety, prevent solar cell shunt circuit during normal work from being opened by wrong diagnosis, the present invention is set
It has set protection and has enabled control circuit.When the protection circuit state of the shunt access is set as forbidding, even if sending protection act
It executes instruction, is also not turned on protection act and executes switch.When only enabled circuit state is set as enabled, guarantor can be realized
The normal break-make control of protection circuit.
As shown in Figure 1, divided current main circuit includes protection access identical with solar cell submatrix quantity, it is each to protect
Access includes shunting metal-oxide-semiconductor Q16, protection metal-oxide-semiconductor Q17, main power flow isolating diode D1, zener diode D2, energy dissipating electricity
Hinder R11, energy dissipating resistance R12, current-limiting resistance R13, magnetic latching relay J18；Solar cell submatrix SAS is isolated with main power flow
Diode D1 anodes are connected, common end and the shunting metal-oxide-semiconductor of solar cell submatrix SAS and main power flow isolating diode D1
The drain electrode of Q16 connects, the drain electrode of the source electrode connection protection metal-oxide-semiconductor Q17 of shunting metal-oxide-semiconductor Q16, the drive signal of shunting metal-oxide-semiconductor Q16
It is accessed from grid, energy dissipating resistance R11 is connected between the grid and source electrode of shunting metal-oxide-semiconductor Q16；The source electrode of protection metal-oxide-semiconductor Q17 connects
Ground, grid connect contact switch one end of magnetic latching relay J18, and the contact switch other end of magnetic latching relay J18 passes through
Current-limiting resistance R13 is connected with instruction power VCC；Energy dissipating resistance R12 is connected between the grid and source electrode of protection metal-oxide-semiconductor Q17；Surely
The plus earth of diode D2, cathode is pressed to be connected with the grid of protection metal-oxide-semiconductor Q17；The contact switch of magnetic latching relay J18 by
Switch is realized in the external remote control instruction control that a group line packets cathode, the b group line packet cathode of magnetic latching relay J18 receives；Disappear anti-electricity
Kinetic potential diode D3 cathode connect a group lines packet anode of magnetic latching relay J18, and the counter electromotive force diode D3 anodes that disappear connection disappears
Counter electromotive force diode D4 cathode, the counter electromotive force diode D4 anodes that disappear connect a group line packet cathode of magnetic latching relay J18；
The counter electromotive force diode D5 cathode that disappear connect the b group lines packet anode of magnetic latching relay J18, and disappear counter electromotive force diode D5 anodes
The counter electromotive force diode D6 cathode that disappear are connected, the counter electromotive force diode D6 anodes that disappear connect the b group line packets of magnetic latching relay J18
Cathode.
Original state, magnetic latching relay J18 are connected, and protection metal-oxide-semiconductor Q17 is connected.It is with magnetic latching relay shown in J18
Example, 1 foot and 2 feet are one group of line packet (a group lines packets), and 9 feet and 10 feet are then another set line packet (b group lines packets).3,4,5 feet and 6,
7,8 feet separately constitute two groups of contact switch, and contact switch switches on and off action and controlled respectively by two groups of line packets.To prevent contact
Malfunction is connected using two groups of contact switch.Wherein 3 feet and 6 feet are commons, when magnetic latching relay works normally, 3 feet
Contact can only be connected with one in 4 feet and 5 foot contacts of same group of switch, 6 foot contacts similarly, can only in 7 feet and 8 foot contacts
One be connected.When a group line packets power up, 3 foot contacts are connected with 4 foot contacts, and 6 foot contacts are connected with 7 foot contacts；B group line packets add
When electric, 3 foot contacts are connected with 5 foot contacts, and 6 foot contacts are connected with 8 foot contacts；If a group line packets and b group line packets are simultaneously powered up, a
Group line packages effect.It might as well assume that magnetic latching relay J18 receives the telecommand (J18_on) of connection, then have instruction power
1 foot and 2 feet (12V, 80ms) for acting on a group line packets, when pulse current is entered by 1 foot to be flowed out from 2 feet, contact switch is dynamic
Make, 3 foot contacts are connected with 4 foot contacts, and 6 foot contacts are connected with 7 foot contacts, protect metal-oxide-semiconductor Q17 to connect at this time, to solar cell
Switching Shunt access does not shield.If assuming, magnetic latching relay J18 receives the telecommand (J18_off) of disconnection,
Then there is instruction power to act on 9 feet and 10 feet (12V, 80ms) of b group line packets, is flowed out when pulse current is entered by 9 feet from 10 feet
When, contact switch action, 3 foot contacts are connected with 5 foot contacts, and 6 foot contacts are connected with 8 foot contacts, and protection pipe Q17 is turned off at this time,
Solar cell Switching Shunt access disconnects, i.e., divided current main circuit disconnects, which can only flow to negative
Carry end, divided current effect.
If short circuit occurs in shunting metal-oxide-semiconductor Q16, or there is long high level event in the drive signal Signal_1 of shunting metal-oxide-semiconductor Q16
Barrier brings shunting metal-oxide-semiconductor Q16 long logical, then the road solar cell submatrix electric current can be caused all to shunt over the ground, the road solar cell
Submatrix power loss.When there is above-mentioned failure, telecommand J18_off can be sent by ground, disconnect magnetic latching relay
J18, shutdown protection metal-oxide-semiconductor Q17, to disconnect the shunt access of the road solar cell submatrix, the roads Shi Gai solar cell submatrix SAS
Power supply load will not cause power supply buses voltage to increase due to the presence of spacecraft long-term work load.
Protection, which enables control circuit, prevents divided current main circuit from malfunctioning, as shown in Figure 1, the enabled control electricity of protection
Road includes enabled control access identical with divided current main circuit quantity, and each control access includes instruction power VCC, current limliting
Resistance R14, current-limiting resistance R15, magnetic latching relay J19；The a groups line packet anode of magnetic latching relay J18 keeps relay with magnetic
The common end of the b group line packet anodes connection of device J18 is connect with contact switch one end of magnetic latching relay J19, and magnetic keeps relay
The contact switch other end of device J19 is connect by current-limiting resistance R14 with instruction power VCC；The a group lines of magnetic latching relay J19
The common end that packet anode is connect with the b group line packet anodes of magnetic latching relay J19 passes through current-limiting resistance R15 and instruction power VCC
It is connected, the contact switch of magnetic latching relay J19 is received by a group line packets cathode, the b group line packet cathode of magnetic latching relay J19
External remote control instruction realize switch.
Original state, magnetic latching relay J19 are disconnected.Assuming that sending the enabled instruction (J19_on) of divided current, magnetic is kept
Relay J19 contact switch acts, and 3 foot contacts are connected with 5 foot contacts, and 6 foot contacts are connected with 8 foot contacts, magnetic holding at this time after
The a group line packets and b group lines of electric appliance J18 wraps electricity, and magnetic latching relay J18 can normally receive telecommand and execute protection task.
If sending divided current to forbid instructing (J19_off), the 3 foot contacts of magnetic latching relay J19 are connected with 4 foot contacts, 6 foot contacts
It is connected with 7 foot contacts, a group line packets and b group line the packets power-off of magnetic latching relay J18, magnetic latching relay J18 cannot normally connect
It can not thus be acted by telecommand.
The content that description in the present invention is not described in detail belongs to the known technology of those skilled in the art.
Claims (3)
1. a kind of solar cell Switching Shunt protects circuit, which is characterized in that including：Divided current main circuit, the enabled control of protection
Circuit processed；Divided current main circuit includes protection access identical with solar cell submatrix quantity, each to protect access including dividing
Flow metal-oxide-semiconductor Q16, protection metal-oxide-semiconductor Q17, main power flow isolating diode D1, zener diode D2, energy dissipating resistance R11, energy dissipating
Resistance R12, current-limiting resistance R13, magnetic latching relay J18；Solar cell submatrix and main power flow isolating diode D1 anodes
It is connected, the common end of solar cell submatrix and main power flow isolating diode D1 are connect with the drain electrode of shunting metal-oxide-semiconductor Q16, point
The drain electrode of the source electrode connection protection metal-oxide-semiconductor Q17 of metal-oxide-semiconductor Q16 is flowed, the drive signal of shunting metal-oxide-semiconductor Q16 is accessed from grid, energy dissipating
Resistance R11 is connected between the grid and source electrode of shunting metal-oxide-semiconductor Q16；The source electrode ground connection of metal-oxide-semiconductor Q17, grid is protected to connect magnetic and protect
Contact switch one end of relay J18 is held, the contact switch other end of magnetic latching relay J18 passes through current-limiting resistance R13 and finger
Power supply VCC is enabled to be connected；Energy dissipating resistance R12 is connected between the grid and source electrode of protection metal-oxide-semiconductor Q17；Zener diode D2 is just
Pole is grounded, and cathode is connected with the grid of protection metal-oxide-semiconductor Q17；A group line packets cathode, the b group line packet cathode of magnetic latching relay J18
Receive external remote control instruction；It includes identical with number of passages is protected in divided current main circuit enabled that protection, which enables control circuit,
Control access, each control access include instruction power VCC, current-limiting resistance R14, current-limiting resistance R15, magnetic latching relay J19；
The common end that a groups line packet anode of magnetic latching relay J18 is connect with the b group line packet anodes of magnetic latching relay J18 is protected with magnetic
Contact switch one end connection of relay J19 is held, the contact switch other end of magnetic latching relay J19 passes through current-limiting resistance R14
It is connect with instruction power VCC；The b group lines packet anode of a groups line packet anode of magnetic latching relay J19 and magnetic latching relay J19
The common end of connection is connected by current-limiting resistance R15 with instruction power VCC, a group line packets cathode of magnetic latching relay J19, b groups
Line packet cathode receives external remote control instruction.
2. a kind of solar cell Switching Shunt according to claim 1 protects circuit, it is characterised in that：The divided current
Main circuit further includes the counter electromotive force diode D3~D6 that disappears；The counter electromotive force diode D3 cathode that disappear connect magnetic latching relay J18
A group lines packets anode, the counter electromotive force diode D3 anodes that disappear connection disappears counter electromotive force diode D4 cathode, and disappear two pole of counter electromotive force
Pipe D4 anodes connect a group line packet cathode of magnetic latching relay J18；The counter electromotive force diode D5 cathode that disappear connect magnetic and keep relay
The b group lines packet anode of device J18, the counter electromotive force diode D5 anodes that disappear connect the counter electromotive force diode D6 cathode that disappear, and disappear anti-electronic
Gesture diode D6 anodes connect the b group line packet cathode of magnetic latching relay J18.
3. a kind of solar cell Switching Shunt according to claim 1 or 2 protects circuit, it is characterised in that：The protection
Enabled control circuit further includes the counter electromotive force diode D7~D10 that disappears；The counter electromotive force diode D7 cathode that disappear connect magnetic keep after
The a group lines packet anode of electric appliance J19, the counter electromotive force diode D7 anodes that disappear connect the counter electromotive force diode D8 cathode that disappear, and disappear anti-electricity
Kinetic potential diode D8 anodes connect a group line packet cathode of magnetic latching relay J19；The counter electromotive force diode D9 cathode that disappear connect magnetic
The b group lines packet anode of guard relay J19, the counter electromotive force diode D9 anodes that disappear connect the counter electromotive force diode D10 cathode that disappear,
The counter electromotive force diode D9 anodes that disappear connect the b group line packet cathode of magnetic latching relay J19.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610698241.7A CN106300326B (en) | 2016-08-19 | 2016-08-19 | A kind of solar cell Switching Shunt protection circuit |
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| CN201610698241.7A CN106300326B (en) | 2016-08-19 | 2016-08-19 | A kind of solar cell Switching Shunt protection circuit |
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| CN106300326B true CN106300326B (en) | 2018-10-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106786563B (en) * | 2017-02-24 | 2019-07-12 | 北京空间飞行器总体设计部 | A kind of autonomous switching circuit of binary channel platform power |
| CN106786999B (en) * | 2017-02-24 | 2019-07-12 | 北京空间飞行器总体设计部 | A kind of the in-orbit of lithium-ions battery shelves maintenance circuitry |
| CN110347078B (en) * | 2019-06-28 | 2022-04-12 | 上海空间电源研究所 | Mars detector autonomous wake-up control system and method |
| CN112366792B (en) * | 2020-11-25 | 2022-10-21 | 上海空间电源研究所 | Space S4R system charging auxiliary switching circuit and S4R system with same |
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| CN106300326A (en) | 2017-01-04 |
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