CN112366792B - Space S4R system charging auxiliary switching circuit and S4R system with same - Google Patents
Space S4R system charging auxiliary switching circuit and S4R system with same Download PDFInfo
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- CN112366792B CN112366792B CN202011341916.5A CN202011341916A CN112366792B CN 112366792 B CN112366792 B CN 112366792B CN 202011341916 A CN202011341916 A CN 202011341916A CN 112366792 B CN112366792 B CN 112366792B
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
Abstract
The invention provides a space S4R system charging auxiliary switching circuit and an S4R system with the same, wherein the circuit comprises: the charging system comprises a charging logic execution circuit (1), a charging disconnection remote control instruction driving circuit (2), a charging connection remote control instruction driving circuit (3) and a charging power execution circuit (4), wherein the charging disconnection remote control instruction driving circuit (2) and the charging connection remote control instruction driving circuit (3) are respectively connected with the charging logic execution circuit (1) and the charging power execution circuit (4), and mutual switching between sequential switch shunt serial regulation S4R and sequential switch shunt regulation S3R is achieved. The circuit solves the problem of overcharge of the storage battery caused by short circuit of the charging power tube or high output of the charging control signal. The circuit is simple under the prerequisite that realizes switching function, realizes cheaply, and used components and parts space environment reliability is strong, has very strong pertinence and practicality to space circuit design.
Description
Technical Field
The invention relates to the aerospace power supply control technology, in particular to an auxiliary charging switching circuit for an S4R system for a space.
Background
The sequential switching shunt regulation (S3R) technology has been widely accepted and adopted as an important means for bus regulation in the power supply system of the spacecraft today. Compared with a linear shunt regulation technology, the sequential switch shunt regulation technology greatly reduces the power consumption of the shunt, reduces the volume and the weight, and provides a feasible way for reducing the difficulty of the thermal design of the shunt regulator. On the basis of the S3R technology, the power regulation technology of sequential switching shunt series regulation (S4R) is to further design a charging array and a power supply array in a unified way to respectively provide power supply current and charging current for a bus and a storage battery pack.
For the topological structure of the S4R charging shunt circuit, the function of the charging shunt circuit is that when the solar array power is rich, the rich power is not shunted but charged to the storage battery, and the redundant power is shunted after the charging requirement is met. In order to realize the functions, the S4R charging shunt circuit is provided with a logic control circuit to coordinate the work of the shunt pipe and the charging pipe: when the solar array has rich power, the output of the charging control signal BEA is high, which indicates that the storage battery needs to be charged at the moment, and the driving circuit closes the shunt power tube and opens the charging power tube at the moment, otherwise, when the output of the charging control signal BEA is low, which indicates that the storage battery does not need to be charged at the moment, and the driving circuit closes the charging power tube and opens the shunt power tube at the moment; when the solar array power is insufficient, the charging pipe and the shunt pipe are closed no matter what value the charging control signal BEA is. If the charging circuit in the sequential switch shunt series regulation (S4R) has short circuit of the charging power tube or the charging control signal output is high, the storage battery is overcharged, the logic of the charging shunt conversion of the circuit is disordered, the normal work of the circuit is influenced, and the bus voltage of a power supply control single machine is influenced.
At present, the operation of the foreign sequence switch shunt series connection regulation (S4R) is mainly to realize the logic between the shunt control and the charging control by controlling the switches of a plurality of MOS tubes, the realization of the mode is complex, the cost is higher, the volume is large, and when the charging power tube short circuit or the charging control signal output high fault occurs in the sequence switch shunt series connection regulation (S4R), the fault is difficult to remove, so that the normal use of the whole machine is influenced.
Disclosure of Invention
In order to solve the above problem, the present invention provides an auxiliary switching circuit for charging a space S4R system, comprising: a charging logic execution circuit 1, a charging disconnection remote control command driving circuit 2, a charging connection remote control command driving circuit 3 and a charging power execution circuit 4, wherein the charging disconnection remote control command driving circuit 2 and the charging connection remote control command driving circuit 3 are respectively connected with the charging logic execution circuit 1 and the charging power execution circuit 4,
the charging off remote control command drive circuit 2 has an electromagnetic relay K2, the charging logic execution circuit 1 has a magnetic latching relay K1, the charging on remote control command drive circuit 3 has an electromagnetic relay K3, the charging power execution circuit 4 has a magnetic latching relay K4,
the coil of the electromagnetic relay K2 is electrified to enable the signal CD/FL connected with the contact F of the magnetic latching relay K1 and the signal ground connected with the contact E to be connected, the charging logic of the charging logic execution circuit 1 is changed into 'charging stop', the contacts TY + and CD + of the latching relay K4 are disconnected, the charging power path is disconnected, and therefore the switching from the sequential switch shunt serial regulation S4R to the sequential switch shunt regulation S3R is realized,
and the coil of the electromagnetic relay K3 is electrified to ensure that a signal CD/FL connected with a contact F of the magnetic latching relay K1 and a signal ground connected with a contact E are disconnected, the charging logic of the charging logic execution circuit 1 is changed into charging, contacts TY + and CD + of the latching relay K4 are connected, and a charging power path is connected, so that the switching from the sequential switch shunt regulation S3R to the sequential switch shunt series regulation S4R is realized.
Further, the charging disconnection remote control instruction driving circuit 2 is connected with the lower computer, receives a charging disconnection remote control instruction level, and when receiving the charging disconnection remote control instruction level and executing a charging disconnection instruction, the coil of the electromagnetic relay K2 is energized, the charging connection remote control instruction driving circuit 3 is connected with the lower computer, receives a charging connection remote control instruction level, and when receiving the charging connection remote control instruction level and executing a charging connection instruction, the coil of the electromagnetic relay K3 is energized.
Further, the charging disconnection remote control instruction driving circuit 2 comprises a stabilized voltage supply Vc, a current-limiting resistor R3, the electromagnetic relay K2, an anti-surge diode V5 and an anti-surge diode V6, wherein the stabilized voltage supply Vc is connected with the current-limiting resistor R3, the other end of the current-limiting resistor R3 is simultaneously connected with the cathode of the anti-surge diode V5 and one end of the coil of the electromagnetic relay K2, the anode of the anti-surge diode V5 is connected with the cathode of the anti-surge diode V6, the anode of the anti-surge diode V6 is connected with the other end of the coil of the electromagnetic relay K2, and the anode of the anti-surge diode V6 is further connected with a lower computer to receive a charging disconnection remote control instruction level;
the charging connection remote control instruction driving circuit 3 comprises a stabilized voltage power supply Vc, a current-limiting resistor R4, the electromagnetic relay K3, an anti-surge diode V11 and an anti-surge diode V12, wherein the stabilized voltage power supply Vc is connected with the current-limiting resistor R4, the other end of the current-limiting resistor R4 is simultaneously connected with the cathode of the anti-surge diode V11 and one end of the coil of the electromagnetic relay K3, the anode of the anti-surge diode V11 is connected with the cathode of the anti-surge diode V12, the anode of the anti-surge diode V12 is connected with the other end of the coil of the electromagnetic relay K3, and the anode of the anti-surge diode V12 is further connected with a lower computer and receives a charging connection remote control instruction level.
Further, the electromagnetic relay K2 includes two pairs of synchronous single-pole double-throw contacts, a contact a in a first pair of contacts is connected to the charging logic execution circuit 1, a contact B is grounded, a contact D in a second pair of contacts is connected to the charging power execution circuit 4, and a contact C is grounded, the two pairs of contacts are in an off state when the charging disconnection remote control command driving circuit 2 is in a default state, and when the charging disconnection remote control command driving circuit 2 receives a charging disconnection remote control command level and executes a charging disconnection command, the two pairs of contacts are connected, so that the contact a and the contact D are grounded.
Further, the electromagnetic relay K3 includes two pairs of synchronous single-pole double-throw contacts, a contact a 'in a first pair of contacts is connected to the charging logic execution circuit 1, a contact B' is grounded, a contact D 'in a second pair of contacts is connected to the charging power execution circuit 4, and a contact C' is grounded, the two pairs of contacts are in an off state in a default state of the charging connection remote control command driving circuit 3, and when the charging connection remote control command driving circuit 3 receives a charging connection remote control command level and executes a charging connection command, the two pairs of contacts are connected, so that the contact a 'and the contact D' are grounded.
Further, the charging logic execution circuit 1 comprises a voltage-stabilized power supply Vc, a current-limiting resistor R1, a current-limiting resistor R2, an anti-surge diode V1, an anti-surge diode V2, an anti-surge diode V3, an anti-surge diode V4 and the magnetic latching relay K1,
the stabilized voltage power supply Vc is connected with the current-limiting resistor R1, the other end of the current-limiting resistor R1 is simultaneously connected with the cathode of the anti-surge diode V1 and one end of the front exciting coil of the magnetic latching relay K1, the anode of the anti-surge diode V1 is connected with the cathode of the anti-surge diode V2, the anode of the anti-surge diode V2 is simultaneously connected with the other end of the front exciting coil of the magnetic latching relay K1 and the contact A of the electromagnetic relay K2,
the stabilized voltage supply Vc is connected with a current-limiting resistor R2, the other end of the current-limiting resistor R2 is connected with the cathode of the anti-surge diode V3 and one end of the rear exciting coil of the magnetic latching relay K1, the anode of the anti-surge diode V3 is connected with the cathode of the anti-surge diode V4, and the anode of the anti-surge diode V4 is connected with the other end of the rear exciting coil of the magnetic latching relay K1 and the contact A' of the electromagnetic relay K3.
Further, the magnetic latching relay K1 has a secondary contact comprising the contact E, the contact F and a contact G, the contact E is grounded, the contact F is connected with CD/FL, the contact G is vacant,
when the charging off remote control command driving circuit 2 executes a charging off command, the contact A of the charging off remote control command driving circuit 2 is grounded, the front exciting coil of the magnetic latching relay K1 connected with the contact A is switched on, under the action of magnetic attraction, the contact G and the contact E of the magnetic latching relay K1 are switched off, the contact F and the contact E are switched on and off, the signal CD/FL connected with the contact F and the signal ground connected with the contact E are switched on, the charging logic becomes 'charging off',
when the charging connection remote control command driving circuit 3 executes a charging connection command, the contact A 'of the charging connection remote control command driving circuit 3 is grounded, the rear exciting coil of the magnetic latching relay K1 connected with the contact A' is connected, under the action of magnetic attraction, the contact F and the contact E of the magnetic latching relay K1 are disconnected, the contact G and the contact E are connected and closed, the signal CD/FL connected with the contact F and the signal ground connected with the contact E are disconnected, and the charging logic is changed into charging.
Further, the charging power execution circuit 4 comprises a voltage-stabilized power supply Vc1, a current-limiting resistor R5, a current-limiting resistor R6, an anti-surge diode V7, an anti-surge diode V8, an anti-surge diode V9, an anti-surge diode V10, and the magnetic latching relay K4,
the stabilized voltage power supply Vc1 is connected with the current-limiting resistor R5, the other end of the current-limiting resistor R5 is simultaneously connected with the cathode of the anti-surge diode V7 and one end of the front exciting coil of the magnetic latching relay K4, the anode of the anti-surge diode V7 is connected with the cathode of the anti-surge diode V8, the anode of the anti-surge diode V8 is simultaneously connected with the other end of the front exciting coil of the magnetic latching relay K4 and the contact D of the electromagnetic relay K2,
the stabilized voltage supply Vc1 is connected with the current-limiting resistor R6, the other end of the current-limiting resistor R6 is simultaneously connected with the cathode of the anti-surge diode V9 and one end of the rear exciting coil of the magnetic latching relay K4, the anode of the anti-surge diode V9 is connected with the cathode of the anti-surge diode V10, and the anode of the anti-surge diode V10 is connected with the other end of the rear exciting coil of the magnetic latching relay K4 and the contact D' of the electromagnetic relay K3.
Further, the magnetic latching relay K4 is provided with two pairs of contacts, two throw power inputs "TY +" at one end of the two pairs of contacts and two throw power outputs "CD +" at the other end of the two pairs of contacts,
when the charging off remote control instruction driving circuit 2 executes a charging off instruction, the contact D of the charging off remote control instruction driving circuit 2 is grounded, the front excitation coil of the magnetic latching relay K4 connected with the contact D is turned on, the contacts TY + and CD + of the magnetic latching relay K4 are turned off under the action of magnetic attraction, the charging power path is turned off,
when the charging connection remote control command driving circuit 3 executes a charging connection command, the contact D 'of the charging connection remote control command driving circuit 3 is grounded, the rear excitation coil of the magnetic latching relay K4 connected with the contact D' is connected, the contacts TY + and CD + of the magnetic latching relay K4 are connected under the action of magnetic attraction, and the charging power path is connected.
The invention also provides an S4R system which is provided with the auxiliary switching circuit for charging the space S4R system.
The invention has the beneficial effects that:
the circuit is simple under the prerequisite that realizes switching function, realizes cheaply, and used components and parts space environment reliability is strong, has very strong pertinence and practicality to space circuit design.
Drawings
Fig. 1 is a schematic diagram of the basic structure of the S4R system.
Fig. 2 is a schematic diagram of a space S4R system charging auxiliary switching circuit according to the present invention.
Description of reference numerals:
1: a charging logic execution circuit; 2: a charging disconnection remote control instruction driving circuit; 3: charging the remote control command driving circuit; 4: a charging power execution circuit.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The auxiliary charging switching circuit for the space S4R system can realize the function of closing or opening the S4R charging through a remote control instruction, and performs switching between sequential switch shunt series regulation (S4R) and sequential switch shunt regulation (S3R), thereby solving the problem of overcharge of a storage battery caused by short circuit of a charging power tube or high output of a charging control signal.
Fig. 1 is a schematic diagram of the basic structure of the S4R system. As shown in fig. 1, the S4R system includes a solar cell circuit, a shunt tube, a charge tube, a logic control circuit, a bus filter capacitor, a diode, a relay K4, a relay K1, and the like. The solar cell circuit is converted into input power through a photoelectric effect, the input power is used for realizing bus output and charging of a storage battery through on-off control of a shunt tube and a charging tube through a logic circuit, a relay K4 is used for realizing connection and disconnection between TY + and CD + on a charging power path, and a relay K1 controls the BEA signal to be high or low by controlling whether the CD/FL is grounded or not.
Specifically, fig. 2 is a schematic diagram of the space S4R system charging auxiliary switching circuit according to the present invention. As shown in fig. 2, the present invention provides a space S4R system charging auxiliary switching circuit, including: the charging system comprises a charging logic execution circuit 1, a charging disconnection remote control command driving circuit 2, a charging connection remote control command driving circuit 3 and a charging power execution circuit 4.
The charging disconnection remote control instruction driving circuit 2 and the charging connection remote control instruction driving circuit 3 are respectively connected with the charging logic execution circuit 1 and the charging power execution circuit 4. The charging disconnection remote control instruction driving circuit 2 comprises a voltage-stabilized power supply Vc, a current-limiting resistor R3, an electromagnetic relay K2, an anti-surge diode V5 and an anti-surge diode V6. The stabilized voltage supply Vc is connected with a current-limiting resistor R3, and the other end of the current-limiting resistor R3 is simultaneously connected with the cathode of an anti-surge diode V5 and one end of a coil of an electromagnetic relay K2; the anode of the anti-surge diode V5 is connected with the cathode of the anti-surge diode V6; the anode of the anti-surge diode V6 is connected with the other end of the coil of the electromagnetic relay K2, and the anode of the anti-surge diode V6 is also connected with the lower computer and receives a charging disconnection remote control command level.
The switch of the charging disconnection remote control instruction driving circuit 2 is an electromagnetic relay K2, and the electromagnetic relay K2 comprises two pairs of synchronous single-pole double-throw contacts. The contact A in the first auxiliary contact is connected with the charging logic execution circuit 1, and the contact B is grounded. The contact D of the second auxiliary contact is connected to the charging power execution circuit 4, and the contact C is grounded. When the charging disconnection remote control instruction driving circuit 2 is in a default state, the two pairs of contacts are in a disconnected state. When the charging disconnection remote control instruction driving circuit 2 receives a charging disconnection remote control instruction level and executes a charging disconnection instruction, the two pairs of contacts are connected, the coil of the electromagnetic relay K2 is electrified, and under the action of magnetic attraction, the contact A and the contact B of the electromagnetic relay K2 are connected and closed, so that the contact A connected with the charging logic execution circuit 1 is grounded, and the contact C and the contact D are connected and closed, so that the contact D connected with the charging power execution circuit 4 is grounded.
The charging connection remote control instruction driving circuit 3 comprises a voltage-stabilized power supply Vc, a current-limiting resistor R4, an electromagnetic relay K3, an anti-surge diode V11 and an anti-surge diode V12. The stabilized voltage supply Vc is connected with a current-limiting resistor R4, and the other end of the current-limiting resistor R4 is simultaneously connected with the cathode of the anti-surge diode V11 and one end of the coil of the electromagnetic relay K3; the anode of the anti-surge diode V11 is connected with the cathode of the anti-surge diode V12; the anode of the anti-surge diode V12 is connected with the other end of the coil of the electromagnetic relay K3, and the anode of the anti-surge diode V12 is also connected with the lower computer and used for receiving a charging communication remote control command level.
The switch for charging and connecting the remote control command driving circuit 3 is an electromagnetic relay K3, and the electromagnetic relay K3 comprises two pairs of synchronous single-pole double-throw contacts. The contact point A 'in the first auxiliary contact point is connected with the charging logic execution circuit 1, and the contact point B' is grounded. The contact D 'of the second pair of contacts is connected to the charging power execution circuit 4, and the contact C' is grounded. When the remote control command driving circuit 3 is turned on by charging, the two auxiliary contacts are in an off state. When the charging connection remote control command driving circuit 3 receives a charging connection remote control command level and executes a charging connection command, a coil of the electromagnetic relay K3 is electrified, and under the action of magnetic attraction force, the contact A 'and the contact B' of the electromagnetic relay K2 are connected and closed, so that the contact A 'connected with the charging logic execution circuit 1 is grounded, and the contact C' and the contact D 'are connected and closed, so that the contact D' connected with the charging power execution circuit 4 is grounded.
The charging logic execution circuit 1 comprises a voltage-stabilized power supply Vc, a current-limiting resistor R1, a current-limiting resistor R2, an anti-surge diode V1, an anti-surge diode V2, an anti-surge diode V3, an anti-surge diode V4 and a magnetic latching relay K1.
The stabilized voltage supply Vc is connected with a current-limiting resistor R1, and the other end of the current-limiting resistor R1 is simultaneously connected with the cathode of an anti-surge diode V1 and one end of a front exciting coil of a magnetic latching relay K1; the anode of the anti-surge diode V1 is connected with the cathode of the anti-surge diode V2; the anode of the anti-surge diode V2 is simultaneously connected with the other end of the front exciting coil of the magnetic latching relay K1 and the contact A of the electromagnetic relay K2. As described above, the contact point B corresponding to the contact point a of the electromagnetic relay K2 is grounded.
The stabilized voltage supply Vc is connected with a current-limiting resistor R2, and the other end of the current-limiting resistor R2 is simultaneously connected with the cathode of an anti-surge diode V3 and one end of a rear exciting coil of a magnetic latching relay K1; the anode of the anti-surge diode V3 is connected with the cathode of the anti-surge diode V4; and the anode of the anti-surge diode V4 is connected with the other end of the rear exciting coil of the magnetic latching relay K1 and the contact A' of the electromagnetic relay K3. As described above, the contact point B 'opposite to the contact point a' of the electromagnetic relay K3 is grounded.
The switch of the charging logic execution circuit 1 is a magnetic latching relay K1. The magnetic latching relay K1 is provided with three contacts comprising a contact E, a contact F and a contact G, wherein the contact E is grounded, the contact F is connected with a CD/FL, and the contact G is vacant. In the charging logic execution circuit 1, the contact E is connected to the contact G in the default state, the charging logic execution circuit 1 is in standby, and the charging logic is "charging".
When the charging disconnection remote control instruction driving circuit 2 executes a charging disconnection instruction, the contact A of the charging disconnection remote control instruction driving circuit 2 is grounded, the front exciting coil of the magnetic latching relay K1 connected with the contact A is connected, the contact G and the contact E of the magnetic latching relay K1 are disconnected under the action of magnetic attraction, and the contact F and the contact E are connected and closed. The signal CD/FL to which contact F is connected and the signal ground to which contact E is connected are turned on, and the charging logic becomes "charging off".
When the charging connection remote control instruction driving circuit 3 executes a charging connection instruction, the contact A 'of the charging connection remote control instruction driving circuit 3 is grounded, the rear exciting coil of the magnetic latching relay K1 connected with the contact A' is connected, under the action of magnetic attraction, the contact F and the contact E of the magnetic latching relay K1 are disconnected, and the contact G and the contact E are connected and closed. The signal CD/FL to contact F is disconnected from the signal ground to contact E and the charging logic changes to "charge".
The charging power execution circuit 4 comprises a stabilized voltage power supply Vc1, a current-limiting resistor R5, a current-limiting resistor R6, an anti-surge diode V7, an anti-surge diode V8, an anti-surge diode V9, an anti-surge diode V10 and a magnetic latching relay K4. The stabilized voltage supply Vc1 is connected with a current-limiting resistor R5, and the other end of the current-limiting resistor R5 is simultaneously connected with the cathode of an anti-surge diode V7 and one end of a front exciting coil of a magnetic latching relay K4; the anode of the anti-surge diode V7 is connected with the cathode of the anti-surge diode V8; the anode of the surge-proof diode V8 is simultaneously connected with the other end of the front exciting coil of the magnetic latching relay K4 and the contact D of the electromagnetic relay K2. As described above, the contact point C corresponding to the contact point D of the electromagnetic relay K2 is grounded.
The stabilized voltage supply Vc1 is connected with a current-limiting resistor R6, and the other end of the current-limiting resistor R6 is simultaneously connected with the cathode of an anti-surge diode V9 and one end of a rear exciting coil of a magnetic latching relay K4; the anode of the anti-surge diode V9 is connected with the cathode of the anti-surge diode V10; and the anode of the anti-surge diode V10 is connected with the other end of the rear exciting coil of the magnetic latching relay K4 and the contact D' of the electromagnetic relay K3. As described above, the contact point C 'opposite to the contact point D' of the electromagnetic relay K3 is grounded.
The switch of the charging power execution circuit 4 is a magnetic latching relay K4. The magnetic latching relay K4 has two pairs of contacts, one of which is two throws "TY +" (power input) and the other is two throws "CD +" (power output).
When the charging off remote control instruction driving circuit 2 executes the charging off instruction, the contact D of the charging off remote control instruction driving circuit 2 is grounded, the front excitation coil of the magnetic latching relay K4 connected with the contact D is turned on, the contacts TY + and CD + of the magnetic latching relay K4 are turned off under the action of the magnetic attraction force, and the charging power path is turned off.
When the charging connection remote control command driving circuit 3 executes a charging connection command, when the contact D 'of the charging connection remote control command driving circuit 3 is grounded, the rear exciting coil of the magnetic latching relay K4 connected with the contact D' is connected, under the action of magnetic attraction, the contacts TY + and CD + of the magnetic latching relay K4 are connected, and the charging power circuit is connected.
The charging auxiliary switching circuit of the S4R system for the space can realize the function of closing or opening the S4R charging through a remote control instruction, and switch between sequential switch shunt serial regulation (S4R) and sequential switch shunt regulation (S3R). The specific working process is as follows:
when the charging disconnection remote control instruction drive circuit 2 receives and executes a charging disconnection instruction, a coil of the electromagnetic relay K2 is electrified, under the action of magnetic attraction force, a contact A and a contact B of the electromagnetic relay K2 are connected and closed, a contact C and a contact D are connected and closed, at the moment, front exciting coils of the magnetic latching relays K1 and K4 are connected, under the action of the magnetic attraction force, a contact G and a contact E of the magnetic latching relay K1 are disconnected, and a contact F and a contact E are connected and closed. The signal CD/FL connected to the contact F and the signal ground connected to the contact E are turned on, the charging logic becomes "charging off", and simultaneously the contacts TY + and CD + of the magnetic retaining relay K4 are turned off, the charging power path is turned off, thereby realizing switching from the sequential switch shunt series regulation (S4R) to the sequential switch shunt regulation (S3R).
When the charging connection remote control instruction driving circuit 3 receives and executes a charging connection instruction, a coil of the electromagnetic relay K3 is electrified, under the action of magnetic attraction force, a contact A 'and a contact B' of the electromagnetic relay K3 are connected and closed, a contact C 'and a contact D' are connected and closed, at the moment, rear exciting coils of the magnetic latching relays K1 and K4 are connected, under the action of the magnetic attraction force, a contact F and a contact E of the magnetic latching relay K1 are disconnected, and a contact G and a contact E are connected and closed. The signal CD/FL to contact F connection and the signal ground to contact E connection are turned off, the charging logic becomes "charging", while keeping the contacts TY + and CD + of the relay K4 on, the charging power path is turned on, thereby achieving switching of sequential switch shunt regulation (S3R) to sequential switch shunt series regulation (S4R).
In summary, when a charging power tube of a charging circuit in the sequential switch shunt series regulation (S4R) is short-circuited or a charging control signal output is high-level fault occurs on the rail, the switching between the sequential switch shunt series regulation (S4R) and the sequential switch shunt regulation (S3R) can be rapidly realized through two instructions, the charging function of closing or opening the S4R is realized, and the normal operation of the circuit is ensured.
The invention also comprises an S4R system with the space S4R system charging auxiliary switching circuit.
It should be noted that the foregoing is only illustrative and illustrative of the present invention, and that any modifications and alterations to the present invention are within the scope of the present invention as those skilled in the art will recognize.
Claims (10)
1. A space S4R system charging auxiliary switching circuit is characterized by comprising: a charging logic execution circuit (1), a charging disconnection remote control instruction drive circuit (2), a charging connection remote control instruction drive circuit (3) and a charging power execution circuit (4), wherein the charging disconnection remote control instruction drive circuit (2) and the charging connection remote control instruction drive circuit (3) are respectively connected with the charging logic execution circuit (1) and the charging power execution circuit (4),
the charging off remote control command driving circuit (2) is provided with an electromagnetic relay K2, the charging logic execution circuit (1) is provided with a magnetic latching relay K1, the charging on remote control command driving circuit (3) is provided with an electromagnetic relay K3, the charging power execution circuit (4) is provided with a magnetic latching relay K4,
the coil of the electromagnetic relay K2 is electrified to enable a signal CD/FL connected with a contact F of the magnetic latching relay K1 and a signal ground connected with a contact E to be connected, the charging logic of the charging logic execution circuit (1) is changed into 'stop charging', contacts TY + and CD + of a latching relay K4 are switched off, a charging power path is switched off, and therefore switching from the sequential switch shunt serial regulation S4R to the sequential switch shunt regulation S3R is achieved,
the coil of the electromagnetic relay K3 is electrified to disconnect the signal CD/FL connected with the contact F of the magnetic latching relay K1 and the signal ground connected with the contact E, the charging logic of the charging logic execution circuit (1) is changed into charging, the contacts TY + and CD + of the latching relay K4 are connected, the charging power path is connected, and therefore switching from the sequential switch shunt regulation S3R to the sequential switch shunt series regulation S4R is achieved.
2. The space S4R system charging auxiliary switching circuit according to claim 1, wherein the charging off remote control command driving circuit (2) is connected to a lower computer, receives a charging off remote control command level, and when the charging off remote control command level is received and a charging off command is executed, the coil of the electromagnetic relay K2 is energized, and the charging on remote control command driving circuit (3) is connected to the lower computer, receives a charging on remote control command level, and when the charging on remote control command level is received and a charging on command is executed, the coil of the electromagnetic relay K3 is energized.
3. The space S4R system charging auxiliary switching circuit according to claim 1, wherein the charging disconnection remote control command driving circuit (2) comprises a stabilized voltage power supply Vc, a current limiting resistor R3, the electromagnetic relay K2, an anti-surge diode V5 and an anti-surge diode V6, the stabilized voltage power supply Vc is connected with the current limiting resistor R3, the other end of the current limiting resistor R3 is connected with a cathode of the anti-surge diode V5 and one end of a coil of the electromagnetic relay K2 at the same time, an anode of the anti-surge diode V5 is connected with a cathode of the anti-surge diode V6, an anode of the anti-surge diode V6 is connected with the other end of the coil of the electromagnetic relay K2, and an anode of the anti-surge diode V6 is further connected with a lower computer and receives a charging disconnection remote control command level;
the charging connection remote control instruction driving circuit (3) comprises a stabilized voltage power supply Vc, a current-limiting resistor R4, the electromagnetic relay K3, an anti-surge diode V11 and an anti-surge diode V12, wherein the stabilized voltage power supply Vc is connected with the current-limiting resistor R4, the other end of the current-limiting resistor R4 is simultaneously connected with the cathode of the anti-surge diode V11 and one end of the coil of the electromagnetic relay K3, the anode of the anti-surge diode V11 is connected with the cathode of the anti-surge diode V12, the anode of the anti-surge diode V12 is connected with the other end of the coil of the electromagnetic relay K3, and the anode of the anti-surge diode V12 is further connected with a lower computer to receive a charging connection remote control instruction level.
4. The space S4R system charging auxiliary switching circuit according to claim 1, wherein the electromagnetic relay K2 includes two pairs of synchronous single-pole double-throw contacts, a contact a of a first pair of contacts is connected to the charging logic execution circuit (1), a contact B is connected to ground, a contact D of a second pair of contacts is connected to the charging power execution circuit (4), and a contact C is connected to ground, the charging-off remote control command driving circuit (2) is in a default state, the two pairs of contacts are in an off state, and when the charging-off remote control command driving circuit (2) receives a charging-off remote control command level and executes a charging-off command, the two pairs of contacts are turned on so that the contact a and the contact D are connected to ground.
5. The space S4R system charging auxiliary switching circuit according to claim 1, wherein the electromagnetic relay K3 includes two pairs of synchronous single-pole double-throw contacts, a contact a 'in a first pair of contacts is connected to the charging logic execution circuit (1), a contact B' is connected to ground, a contact D 'in a second pair of contacts is connected to the charging power execution circuit (4), and a contact C' is connected to ground, the charging connection remote control command driving circuit (3) is in a default state, the two pairs of contacts are in an off state, and when the charging connection remote control command driving circuit (3) receives a charging connection remote control command level and executes a charging connection command, the two pairs of contacts are connected so that the contact a 'and the contact D' are connected to ground.
6. The space S4R system charging auxiliary switching circuit according to claim 1, wherein the charging logic execution circuit (1) comprises a voltage-stabilized power supply Vc, a current-limiting resistor R1, a current-limiting resistor R2, an anti-surge diode V1, an anti-surge diode V2, an anti-surge diode V3, an anti-surge diode V4, the magnetic latching relay K1,
the stabilized voltage power supply Vc is connected with the current-limiting resistor R1, the other end of the current-limiting resistor R1 is simultaneously connected with the cathode of the anti-surge diode V1 and one end of the front exciting coil of the magnetic latching relay K1, the anode of the anti-surge diode V1 is connected with the cathode of the anti-surge diode V2, the anode of the anti-surge diode V2 is simultaneously connected with the other end of the front exciting coil of the magnetic latching relay K1 and the contact A of the electromagnetic relay K2,
the stabilized voltage power supply Vc is connected with a current-limiting resistor R2, the other end of the current-limiting resistor R2 is simultaneously connected with the cathode of the anti-surge diode V3 and one end of the rear exciting coil of the magnetic latching relay K1, the anode of the anti-surge diode V3 is connected with the cathode of the anti-surge diode V4, and the anode of the anti-surge diode V4 is connected with the other end of the rear exciting coil of the magnetic latching relay K1 and the contact A' of the electromagnetic relay K3.
7. The space S4R system charging auxiliary switching circuit according to claim 6, wherein the magnetic latching relay K1 has a secondary contact including the contact E, the contact F and a contact G, the contact E is grounded, the contact F is connected to CD/FL, the contact G is vacant,
when the charging disconnection remote control instruction driving circuit (2) executes a charging disconnection instruction, a contact A of the charging disconnection remote control instruction driving circuit (2) is grounded, the front exciting coil of the magnetic latching relay K1 connected with the contact A is switched on, under the action of magnetic attraction, the contact G and the contact E of the magnetic latching relay K1 are switched off, the contact F and the contact E are switched on and off, a signal CD/FL connected with the contact F and a signal ground connected with the contact E are switched on, a charging logic is changed into 'charging stop',
when the charging connection remote control command driving circuit (3) executes a charging connection command, a contact A 'of the charging connection remote control command driving circuit (3) is grounded, the rear exciting coil of the magnetic latching relay K1 connected with the contact A' is connected, under the action of magnetic attraction, the contact F and the contact E of the magnetic latching relay K1 are disconnected, the contact G and the contact E are connected and closed, a signal CD/FL connected with the contact F and a signal ground connected with the contact E are disconnected, and the charging logic is changed into 'charging'.
8. The space S4R system charging auxiliary switching circuit according to claim 1, wherein the charging power execution circuit (4) comprises a stabilized voltage power supply Vc1, a current limiting resistor R5, a current limiting resistor R6, an anti-surge diode V7, an anti-surge diode V8, an anti-surge diode V9, an anti-surge diode V10, the magnetic latching relay K4,
the stabilized voltage supply Vc1 is connected with the current-limiting resistor R5, the other end of the current-limiting resistor R5 is simultaneously connected with the cathode of the anti-surge diode V7 and one end of the front exciting coil of the magnetic latching relay K4, the anode of the anti-surge diode V7 is connected with the cathode of the anti-surge diode V8, the anode of the anti-surge diode V8 is simultaneously connected with the other end of the front exciting coil of the magnetic latching relay K4 and the contact D of the electromagnetic relay K2,
the stabilized voltage supply Vc1 is connected with the current-limiting resistor R6, the other end of the current-limiting resistor R6 is simultaneously connected with the cathode of the anti-surge diode V9 and one end of the rear exciting coil of the magnetic latching relay K4, the anode of the anti-surge diode V9 is connected with the cathode of the anti-surge diode V10, and the anode of the anti-surge diode V10 is connected with the other end of the rear exciting coil of the magnetic latching relay K4 and the contact D' of the electromagnetic relay K3.
9. The space S4R system charging auxiliary switching circuit according to claim 8, wherein the magnetic latching relay K4 has two pairs of contacts, two of the two pairs of contacts being thrown at one end to power input "TY +", and two of the two pairs of contacts being thrown to power output "CD +",
when the charging off remote control instruction driving circuit (2) executes a charging off instruction, the contact D of the charging off remote control instruction driving circuit (2) is grounded, the front exciting coil of the magnetic latching relay K4 connected with the contact D is connected, the contacts TY + and CD + of the magnetic latching relay K4 are disconnected under the action of magnetic attraction, a charging power path is disconnected,
when the charging connection remote control command driving circuit (3) executes a charging connection command, the contact D 'of the charging connection remote control command driving circuit (3) is grounded, the rear exciting coil of the magnetic latching relay K4 connected with the contact D' is connected, the contacts TY + and CD + of the magnetic latching relay K4 are connected under the action of magnetic attraction, and the charging power circuit is connected.
10. An S4R system having the S4R system charging auxiliary switching circuit for a space according to any one of claims 1 to 9.
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