CN107846000A - The super temperature protective device of bidirectional power supply self- recoverage excessively stream - Google Patents
The super temperature protective device of bidirectional power supply self- recoverage excessively stream Download PDFInfo
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- CN107846000A CN107846000A CN201610835739.3A CN201610835739A CN107846000A CN 107846000 A CN107846000 A CN 107846000A CN 201610835739 A CN201610835739 A CN 201610835739A CN 107846000 A CN107846000 A CN 107846000A
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Classifications
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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
- H02H7/08—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 dynamo-electric motors
- H02H7/085—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 dynamo-electric motors against excessive load
- H02H7/0852—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 dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
-
- 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
- H02H7/08—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 dynamo-electric motors
- H02H7/0811—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 dynamo-electric motors for dc motors
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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
- H02H7/08—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 dynamo-electric motors
- H02H7/085—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 dynamo-electric motors against excessive load
- H02H7/0853—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 dynamo-electric motors against excessive load specially adapted for motors rotating in both directions
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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
- H02H7/08—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 dynamo-electric motors
- H02H7/085—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 dynamo-electric motors against excessive load
- H02H7/0854—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 dynamo-electric motors against excessive load responsive to rate of change of current, couple or speed, e.g. anti-kickback protection
Abstract
A kind of super temperature protective device of bidirectional power supply self- recoverage excessively stream to low voltage DC motor protection.The forward and reverse of motor can be realized by bidirectional power supply, through phase judgment, comparison amplifier constantly detects the operating current of motor, after electric current is more than setting value with temperature, comparison amplifier circuit is overturn, export high potential, through logic circuit triggering timing device, according to setting time delay drive level control, MOSFET pipes shut-off corresponding to making, using interlocking, thoroughly the corresponding reverse MOSFET of shut-off is managed, avoid because of motor rotation blockage excessively stream, short circuit raises with temperature, not only extend the service life of motor, also ensure that simultaneously and unnecessary damage is caused to the equipment on periphery because motor temperature raises.
Description
Technical field
The present invention relates to a kind of to low voltage DC motor operating current and the safeties of temperature, especially motor is avoided to send out
Raw stall, excessively stream, short circuit, to infringement caused by motor, realize motor after protection by service restoration motor again with overtemperature degree
Various defencive functions the super temperature protective device of bidirectional power supply self- recoverage excessively stream.
Background technology
At present, the known protection device applied on low voltage DC motor is PTC, but its operating time of protection is slow, by
Ambient temperature effect is big, same current at low temperature actuation time with regard to longer, in hot environment actuation time with regard to fast, with environment
Temperature rises, and PTC resistance to stream is also declining, and can not realize constant resistance to flow valuve, and job insecurity, protection act number is limited, and one
As can reach 100~200 reuses, with the increase of action frequency, PTC internal resistances gradually increase, the increase of internal resistance also shadow
Ring the rotating speed and output power of motor.It currently there are no a kind of internal resistance in high and low temperature environment and resistance to stream be constant, action frequency reaches
More than the 50,000 times low voltage DC motor protection devices that can also normally reuse.
The content of the invention
In order to overcome existing low voltage DC motor operating time of protection slow, ambient temperature effect is big, and same current is low
Warm lower actuation time is grown, and actuation time is fast in hot environment, flows down drop as environment temperature rising is resistance to, can not realize constant resistance to stream
Value, protection act number is limited, and with the increase of action frequency, deficiency that PTC internal resistances gradually increase, the present invention provides a kind of double
To the power supply super temperature protective device of self- recoverage excessively stream, the super temperature protective device of bidirectional power supply self- recoverage excessively stream is not only in high/low temperature
Internal resistance and resistance to stream are constant in environment, and excessively stream, short circuit, temperature protection and actuation time are accurate after integrated IC, action frequency
Up to 100,000 reuses, because operating time of protection also extends the service life of motor soon, motor after protection by
Power supply can recover the various defencive functions of motor again.
The technical solution adopted for the present invention to solve the technical problems is：In protection device circuit, forward current is by two
The switch control of P-channel MOSFET pipes, reverse current is by two N-channel MOS FET pipes switch controls, when electric current flows to 2 from 1 end
During the forward current at end, compare detection short circuit current by the 2 of comparison amplifier IC3-1,3 pin current potentials, as comparison amplifier IC3-1
1 pin exports high potential after overturning, and releasing binary counter IC1 through triode V15, V10 and V9 resets, binary counting
Device IC1 starts timing, then timing output loop is connected with V12 through triode V14, and timing is arrived, and is turned on by triode V18 with V19
MOSFET pipes Q1 G electrode potentials are drawn high, MOSFET pipes Q1 ends, and is disconnected the current supply circuit of motor, now 1 end high potential, 2 ends
Low potential, triode V7 conductings make MOSFET pipes Q3 reliably end to form interlocking, prevent forward leakage current；Comparison amplifier IC3-
25,6 pin current potentials compare detection motor rotation blockage electric current, that is, overcurrent, 7 pin after comparison amplifier IC3-2 is overturn
High potential is exported, releasing binary counter IC1 through triode V17, V10 and V9 resets, and binary counter IC1 starts to count
When, then timing output loop is connected with V13 through triode V16, timing is arrived, and is turned on by triode V18 with V19 and is drawn high MOSFET pipes
Q1 G electrode potentials, MOSFET pipes Q1 end, and are disconnected the current supply circuit of motor, now 1 end high potential, 2 end low potentials, three poles
Pipe V7 conductings make MOSFET pipes Q3 reliably end to form interlocking, prevent forward leakage current.When electric current, from 2 ends to flow to 1 end reversely electric
During stream, compare detection short circuit current by the 2 of comparison amplifier IC4-1,3 pin current potentials, after comparison amplifier IC4-1 is overturn
1 pin exports high potential, and releasing binary counter IC1 through triode V5, V10 and V9 resets, and binary counter IC1 starts to count
When, then timing output loop is connected with V1 through triode V3, timing is arrived, and MOSFET pipes Q4 G poles are dragged down by triode V8 conductings
Current potential, MOSFET pipes Q4 cut-offs, is disconnected the current supply circuit of motor, now 2 end high potential, 1 end low potential, triode V20 are led
It is logical to make MOSFET pipes Q2 reliably end to form interlocking, prevent reverse leakage current；Comparison amplifier IC4-2 5,6 pin current potentials compare
Motor rotation blockage electric current, that is, overcurrent are detected, 7 pin export high potential after comparison amplifier IC4-2 is overturn, through three poles
Pipe V6, V10 and V9 release binary counter IC1 and resetted, and binary counter IC1 starts timing, then through triode V4 and V2
Timing output loop is connected, timing is arrived, and MOSFET pipes Q4 G electrode potentials are dragged down by triode V8 conductings, and MOSFET pipes Q4 ends,
The current supply circuit of motor is disconnected, now 2 end high potential, 1 end low potential, triode V20 conductings make MOSFET pipes Q2 reliably cut
Interlocking is only formed, prevents reverse leakage current.Comparison amplifier IC2 5,6 pin current potentials compare detection, and when temperature raises, temperature-sensitive is electric
The reduction of NTC resistances is hindered, upset 7 pin output high potential occurs for comparison amplifier IC2, and triode V18 turns on V19 when forward direction is powered
MOSFET pipes Q1 G electrode potentials are drawn high, MOSFET pipes Q1 ends, and is disconnected the current supply circuit of motor, now 1 end high potential, 2 ends
Low potential, triode V7 conductings make MOSFET pipes Q3 reliably end to form interlocking, prevent forward leakage current；Three pole during reverse power supply
Pipe V8 turns on the G electrode potentials for dragging down MOSFET pipes Q4, MOSFET pipes Q4 cut-offs, is disconnected the current supply circuit of motor, now 2 ends are high
Current potential, 1 end low potential, triode V20 conductings make MOSFET pipes Q2 reliably end to form interlocking, prevent reverse leakage current.3 ends are
Common port.
The invention has the advantages that protection device internal resistance and resistance to stream in high and low temperature environment is constant, the mistake after integrated IC
Stream, short circuit, temperature protection and actuation time are accurate, and action frequency not only avoid motor rotation blockage up to 100,000 reuses
Excessively stream raises with temperature, extends the service life of motor, while also ensure that and made because motor temperature raises to the equipment on periphery
Into unnecessary damage, ensure the rotating speed of motor with exporting power.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Accompanying drawing is the circuit theory diagrams of the present invention
Accompanying drawing：1~3. terminal, R1~R48. resistance, RP1~RP5. adjustable resistances, NTC. thermistors, C1, C2. electricity
Hold, D1~D12. diodes, V1~V20. triodes, Q1~Q4.MOSFET pipes, IC1. binary counters, IC2, IC3-1,
IC3-2, IC4-1, IC4-2. comparison amplifier.
Embodiment
In figure, terminal 1, diode D5 positive poles, diode D8 negative poles, comparison amplifier IC3-1 8 pin, resistance R37 mono-
End, triode V3 e poles, triode V4 e poles, triode V5 e poles, triode V6 e poles, the 4 of comparison amplifier IC4-2
Pin, resistance R14 one end, resistance R16 one end, MOSFET pipes Q3 D poles, resistance R18 one end, resistance R40 one end, resistance R43 mono-
End, triode V19 e poles are extremely connected with MOSFET pipes Q1 S, diode D5 negative poles, diode D6 negative poles, adjustable resistance RP1
The pin of fixing end 1, resistance R1 one end, comparison amplifier IC2 8 pin, triode V9 e poles, triode V10 e poles, binary system meter
Number device IC1 16 pin, electric capacity C2 one end are connected with resistance R29 one end, diode D6 positive poles, diode D7 negative poles, diode D12
Negative pole, terminal 3 are connected with diode D4 positive poles, the pin of adjustable resistance RP1 fixing ends 3, adjustable resistance RP1 the is adjustable pin of end 2, compare and put
Big device IC2 6 pin are connected with thermistor NTC one end, the resistance R1 other ends, comparison amplifier IC2 5 pin and resistance R2 one end
It is connected, triode V9 c poles, binary counter IC1 12 pin are connected with resistance R22 one end, triode V9 b poles, three poles
Pipe V10 c poles are connected with resistance R23 one end, and binary counter IC1 11 pin are connected with resistance R24 one end, and resistance R24 is another
One end, resistance R25 one end, electric capacity C1 one end are extremely connected with triode V11 c, the resistance R25 other ends and binary counter
IC1 10 pin are connected, and the electric capacity C1 other ends are connected with binary counter IC1 9 pin, triode V11 b poles and resistance R26
One end is connected, and the resistance R26 other ends, diode D9 negative poles are connected with diode D10 negative poles, diode D9 positive poles, triode V1
C poles, triode V2 c poles be connected with diode D3 positive poles, diode D10 positive poles, triode V12 c poles, triode V13
C poles be connected with diode D11 positive poles, binary counter IC1 3 pin, triode V13 e poles and triode V2 e poles phase
Even, binary counter IC1 7 pin, triode V12 e poles are extremely connected with triode V1 e, triode V12 b poles and electricity
Resistance R27 one end is connected, and the resistance R27 other ends are extremely connected with triode V14 c, triode V14 b poles and resistance R33 one end phase
Even, triode V13 b poles are connected with resistance R28 one end, and the resistance R28 other ends are extremely connected with triode V16 c, triode
V16 b poles are connected with resistance R35 one end, triode V10 b poles, the resistance R29 other ends, resistance R30 one end, resistance R31 mono-
End, resistance R6 one end are connected with resistance R7 one end, and the resistance R30 other ends are extremely connected with triode V15 c, triode V15 b
Pole is connected with resistance R32 one end, and the resistance R32 other ends, the resistance R33 other ends are connected with comparison amplifier IC3-1 1 pin, than
3 pin, the resistance R37 other ends, comparison amplifier IC3-2 5 pin compared with amplifier IC3-1 are connected with resistance R38 one end, compare and put
The big device IC3-1 2 pin pin of end 2 adjustable with adjustable resistance RP4 is connected, and the resistance R31 other ends are extremely connected with triode V17 c, and three
Pole pipe V17 b poles are connected with resistance R34 one end, the resistance R34 other end, the resistance R35 other ends and the 7 of comparison amplifier IC3-2
Pin is connected, and the comparison amplifier IC3-2 6 pin pin of end 2 adjustable with adjustable resistance RP5 is connected, diode D11 negative poles and resistance R36
One end is connected, and the resistance R36 other ends, resistance R39 one end are extremely connected with triode V18 b, triode V18 c poles and resistance
R41 one end is connected, and the resistance R41 other ends, the resistance R40 other ends are extremely connected with triode V19 b, triode V19 c poles,
MOSFET pipes Q1 G poles are connected with resistance R42 one end, and MOSFET pipes Q1 D poles are extremely connected with MOSFET pipes Q2 D, MOSFET
Pipe Q2 G poles, triode V20 c poles are connected with resistance R44 one end, and triode V20 b poles are connected with the resistance R43 other ends,
Triode V20 e poles, MOSFET pipes Q2 S poles, MOSFET pipes Q4 D poles, resistance R21 one end, resistance R45 one end, resistance
R47 one end is connected with terminal 2, and the resistance R45 other ends are connected with the pin of adjustable resistance RP4 fixing ends 1, adjustable resistance RP4 fixing ends 3
Pin is connected with resistance R46 one end, and the resistance R47 other ends are connected with the pin of adjustable resistance RP5 fixing ends 1, adjustable resistance RP5 fixing ends
3 pin are connected with resistance R48 one end, and the resistance R39 other ends are connected with diode D1 negative poles, diode D1 positive poles, comparison amplifier
IC2 7 pin are connected with diode D2 positive poles, and diode D2 negative poles are connected with resistance R3 one end, the resistance R3 other ends, resistance R12
One end is extremely connected with triode V8 b, and triode V8 e poles, MOSFET pipes Q4 S poles, triode V7 e poles and MOSFET are managed
Q3 S is extremely connected, and diode D3 negative poles are connected with the resistance R12 other ends, and triode V1 b poles are connected with resistance R4 one end, electricity
The resistance R4 other ends are extremely connected with triode V3 c, and triode V3 b poles are connected with resistance R9 one end, the resistance R6 other ends and three
Pole pipe V5 c is extremely connected, and triode V5 b poles are connected with resistance R8 one end, and the resistance R8 other ends, the resistance R9 other ends are compared with
Amplifier IC4-1 1 pin is connected, comparison amplifier IC4-1 3 pin, resistance R20 one end, comparison amplifier IC4-2 5 pin with
The resistance R21 other ends are connected, and the comparison amplifier IC4-1 2 pin pin of end 2 adjustable with adjustable resistance RP2 is connected, triode V2 b
Pole is connected with resistance R5 one end, and the resistance R5 other ends are extremely connected with triode V4 c, triode V4 b poles and resistance R11 one end
It is connected, the resistance R7 other ends are extremely connected with triode V6 c, and triode V6 b poles are connected with resistance R10 one end, and resistance R10 is another
One end, the resistance R11 other ends are connected with comparison amplifier IC4-2 7 pin, comparison amplifier IC4-2 6 pin and adjustable resistance
RP3 is adjustable, and the pin of end 2 is connected, comparison amplifier IC4-1 8 pin, resistance R13 one end, resistance R15 one end, resistance R17 one end, electricity
Resistance R19 one end, the resistance R20 other ends are connected with diode D4 negative poles, the resistance R13 other ends and the pin of adjustable resistance RP2 fixing ends 1
It is connected, the pin of adjustable resistance RP2 fixing ends 3 is connected with the resistance R14 other ends, the resistance R15 other ends and adjustable resistance RP3 fixing ends
1 pin is connected, and the pin of adjustable resistance RP3 fixing ends 3 is connected with the resistance R16 other ends, the resistance R17 other ends, triode V7 c poles with
MOSFET pipes Q3 G is extremely connected, and triode V7 b poles are connected with the resistance R18 other ends, the resistance R19 other ends, triode V8
C poles are extremely connected with MOSFET pipes Q4 G, and diode D8 positive poles, diode D7 positive poles, the thermistor NTC other ends, resistance R2 are another
One end, comparison amplifier IC2 4 pin, the resistance R22 other ends, the resistance R23 other ends, triode V11 e poles, binary counting
Device IC1 8 pin are connected with the electric capacity C2 other ends, triode V14 e poles, triode V15 e poles, triode V16 e poles, three
Pole pipe V17 e poles, comparison amplifier IC3-2 4 pin, the resistance R38 other ends, triode V18 e poles, diode D12 positive poles,
The resistance R42 other ends, the resistance R44 other ends, the resistance R46 other ends are connected with the resistance R48 other ends.
Claims (1)
1. a kind of super temperature protective device of bidirectional power supply self- recoverage excessively stream, in protective loop, comparison amplifier IC3-1, three poles
Pipe V15, triode V10, triode V9 release binary counter IC1 and resetted, triode V14, triode V12, triode
To MOSFET pipe Q1, comparison amplifier IC3-2, triode V17, triode V10, triode V9 release two by V18, triode V19
System Counter IC1 resets, and triode V16, triode V13, triode V18, triode V19 compare and put to MOSFET pipe Q1
Big device IC4-1, triode V5, triode V10, triode V9 release binary counter IC1 and resetted, triode V3, triode
To MOSFET pipe Q4, comparison amplifier IC4-2, triode V6, triode V10, triode V9 release binary system by V1, triode V8
Counter IC1 resets, triode V4, triode V2, triode V8 to MOSFET pipe Q4, composition control loop, it is characterized in that：End
Son 1, diode D5 positive poles, diode D8 negative poles, comparison amplifier IC3-1 8 pin, resistance R37 one end, triode V3 e poles,
Triode V4 e poles, triode V5 e poles, triode V6 e poles, comparison amplifier IC4-2 4 pin, resistance R14 one end, electricity
Hinder R16 one end, MOSFET pipes Q3 D poles, resistance R18 one end, resistance R40 one end, resistance R43 one end, triode V19 e poles
Extremely it is connected with MOSFET pipes Q1 S, diode D5 negative poles, diode D6 negative poles, the pin of adjustable resistance RP1 fixing ends 1, resistance R1 mono-
End, comparison amplifier IC2 8 pin, triode V9 e poles, triode V10 e poles, binary counter IC1 16 pin, electric capacity
C2 one end is connected with resistance R29 one end, diode D6 positive poles, diode D7 negative poles, diode D12 negative poles, terminal 3 and diode
D4 positive poles are connected, the pin of adjustable resistance RP1 fixing ends 3, adjustable resistance RP1 the is adjustable pin of end 2, comparison amplifier IC2 6 pin and temperature-sensitive
Resistance NTC one end is connected, and the resistance R1 other ends, comparison amplifier IC2 5 pin are connected with resistance R2 one end, triode V9 c
Pole, binary counter IC1 12 pin are connected with resistance R22 one end, triode V9 b poles, triode V10 c poles and resistance
R23 one end is connected, and binary counter IC1 11 pin are connected with resistance R24 one end, the resistance R24 other ends, resistance R25 one end,
Electric capacity C1 one end is extremely connected with triode V11 c, and the resistance R25 other ends are connected with binary counter IC1 10 pin, electric capacity
The C1 other ends are connected with binary counter IC1 9 pin, and triode V11 b poles are connected with resistance R26 one end, and resistance R26 is another
One end, diode D9 negative poles are connected with diode D10 negative poles, diode D9 positive poles, triode V1 c poles, triode V2 c poles
It is connected with diode D3 positive poles, diode D10 positive poles, triode V12 c poles, triode V13 c poles and diode D11 positive poles
It is connected, binary counter IC1 3 pin, triode V13 e poles are extremely connected with triode V2 e, binary counter IC1's
7 pin, triode V12 e poles are extremely connected with triode V1 e, and triode V12 b poles are connected with resistance R27 one end, resistance R27
The other end is extremely connected with triode V14 c, and triode V14 b poles are connected with resistance R33 one end, triode V13 b poles and electricity
Resistance R28 one end is connected, and the resistance R28 other ends are extremely connected with triode V16 c, triode V16 b poles and resistance R35 one end phase
Even, triode V10 b poles, the resistance R29 other ends, resistance R30 one end, resistance R31 one end, resistance R6 one end and resistance R7 mono-
End is connected, and the resistance R30 other ends are extremely connected with triode V15 c, and triode V15 b poles are connected with resistance R32 one end, resistance
The R32 other ends, the resistance R33 other ends are connected with comparison amplifier IC3-1 1 pin, comparison amplifier IC3-1 3 pin, resistance
The R37 other ends, comparison amplifier IC3-2 5 pin are connected with resistance R38 one end, comparison amplifier IC3-1 2 pin and adjustable electric
The resistance adjustable pin of end 2 of RP4 are connected, and the resistance R31 other ends are extremely connected with triode V17 c, triode V17 b poles and resistance R34
One end is connected, and the resistance R34 other end, the resistance R35 other ends are connected with comparison amplifier IC3-2 7 pin, comparison amplifier IC3-
The 26 pin pin of end 2 adjustable with adjustable resistance RP5 is connected, and diode D11 negative poles are connected with resistance R36 one end, and resistance R36 is another
End, resistance R39 one end are extremely connected with triode V18 b, and triode V18 c poles are connected with resistance R41 one end, and resistance R41 is another
One end, the resistance R40 other ends are extremely connected with triode V19 b, triode V19 c poles, MOSFET pipes Q1 G poles and resistance
R42 one end is connected, and MOSFET pipes Q1 D poles are extremely connected with MOSFET pipes Q2 D, MOSFET pipes Q2 G poles, triode V20 c
Pole is connected with resistance R44 one end, and triode V20 b poles are connected with the resistance R43 other ends, triode V20 e poles, MOSFET pipes
Q2 S poles, MOSFET pipes Q4 D poles, resistance R21 one end, resistance R45 one end, resistance R47 one end are connected with terminal 2, resistance
The R45 other ends are connected with the pin of adjustable resistance RP4 fixing ends 1, and the pin of adjustable resistance RP4 fixing ends 3 is connected with resistance R46 one end, electricity
The resistance R47 other ends are connected with the pin of adjustable resistance RP5 fixing ends 1, and the pin of adjustable resistance RP5 fixing ends 3 is connected with resistance R48 one end,
The resistance R39 other ends are connected with diode D1 negative poles, diode D1 positive poles, comparison amplifier IC2 7 pin and diode D2 positive poles
It is connected, diode D2 negative poles are connected with resistance R3 one end, the resistance R3 other ends, resistance R12 one end and triode V8 b poles phase
Even, triode V8 e poles, MOSFET pipes Q4 S poles, triode V7 e poles are extremely connected with MOSFET pipes Q3 S, diode D3
Negative pole is connected with the resistance R12 other ends, and triode V1 b poles are connected with resistance R4 one end, the resistance R4 other ends and triode V3
C extremely be connected, triode V3 b poles are connected with resistance R9 one end, and the resistance R6 other ends are extremely connected with triode V5 c, three poles
Pipe V5 b poles are connected with resistance R8 one end, the resistance R8 other ends, 1 pin phase of the resistance R9 other ends and comparison amplifier IC4-1
Even, comparison amplifier IC4-1 3 pin, resistance R20 one end, comparison amplifier IC4-2 5 pin are connected with the resistance R21 other ends,
The comparison amplifier IC4-1 2 pin pin of end 2 adjustable with adjustable resistance RP2 is connected, and triode V2 b poles are connected with resistance R5 one end,
The resistance R5 other ends are extremely connected with triode V4 c, and triode V4 b poles are connected with resistance R11 one end, the resistance R7 other ends with
Triode V6 c is extremely connected, and triode V6 b poles are connected with resistance R10 one end, the resistance R10 other ends, the resistance R11 other ends
It is connected with comparison amplifier IC4-2 7 pin, the comparison amplifier IC4-2 6 pin pin of end 2 adjustable with adjustable resistance RP3 is connected, than
8 pin, resistance R13 one end, resistance R15 one end, resistance R17 one end, resistance R19 one end, resistance R20 compared with amplifier IC4-1 is another
One end is connected with diode D4 negative poles, and the resistance R13 other ends are connected with the pin of adjustable resistance RP2 fixing ends 1, and adjustable resistance RP2 consolidates
The pin of fixed end 3 is connected with the resistance R14 other ends, and the resistance R15 other ends are connected with the pin of adjustable resistance RP3 fixing ends 1, adjustable resistance
The pin of RP3 fixing ends 3 is connected with the resistance R16 other ends, the resistance R17 other ends, triode V7 c poles and MOSFET pipes Q3 G poles
It is connected, triode V7 b poles are connected with the resistance R18 other ends, the resistance R19 other ends, triode V8 c poles and MOSFET pipes Q4
G extremely be connected, diode D8 positive poles, diode D7 positive poles, the thermistor NTC other ends, the resistance R2 other ends, comparison amplifier
IC2 4 pin, the resistance R22 other ends, the resistance R23 other ends, triode V11 e poles, binary counter IC1 8 pin and electricity
Hold the C2 other ends to be connected, triode V14 e poles, triode V15 e poles, triode V16 e poles, triode V17 e poles, ratio
4 pin, the resistance R38 other ends, triode V18 e poles, diode D12 positive poles, the resistance R42 other ends compared with amplifier IC3-2,
The resistance R44 other ends, the resistance R46 other ends are connected with the resistance R48 other ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835739.3A CN107846000B (en) | 2016-09-18 | 2016-09-18 | The super temperature protective device of bidirectional power supply self- recoverage overcurrent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835739.3A CN107846000B (en) | 2016-09-18 | 2016-09-18 | The super temperature protective device of bidirectional power supply self- recoverage overcurrent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107846000A true CN107846000A (en) | 2018-03-27 |
| CN107846000B CN107846000B (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610835739.3A Active CN107846000B (en) | 2016-09-18 | 2016-09-18 | The super temperature protective device of bidirectional power supply self- recoverage overcurrent |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201742077U (en) * | 2010-06-08 | 2011-02-09 | 吴如喜 | Multifunctional soft limit protector |
| CN201898473U (en) * | 2010-10-25 | 2011-07-13 | 毛世伦 | Engine starting controller |
| CN202333756U (en) * | 2011-10-18 | 2012-07-11 | 马庭权 | Full-automatic inverter |
| CN203456859U (en) * | 2013-09-04 | 2014-02-26 | 陕西中科天地航空模块有限公司 | Short-circuit protection circuit |
| CN205901259U (en) * | 2016-08-17 | 2017-01-18 | 艾体威尔电子技术(北京)有限公司 | Short circuit current is prevented to PSAM card |
-
2016
- 2016-09-18 CN CN201610835739.3A patent/CN107846000B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201742077U (en) * | 2010-06-08 | 2011-02-09 | 吴如喜 | Multifunctional soft limit protector |
| CN201898473U (en) * | 2010-10-25 | 2011-07-13 | 毛世伦 | Engine starting controller |
| CN202333756U (en) * | 2011-10-18 | 2012-07-11 | 马庭权 | Full-automatic inverter |
| CN203456859U (en) * | 2013-09-04 | 2014-02-26 | 陕西中科天地航空模块有限公司 | Short-circuit protection circuit |
| CN205901259U (en) * | 2016-08-17 | 2017-01-18 | 艾体威尔电子技术(北京)有限公司 | Short circuit current is prevented to PSAM card |
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| Publication number | Publication date |
|---|---|
| CN107846000B (en) | 2019-04-12 |
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