CN209731101U - The constant-current source of reference current is provided for electric car - Google Patents
The constant-current source of reference current is provided for electric car Download PDFInfo
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- CN209731101U CN209731101U CN201822203983.5U CN201822203983U CN209731101U CN 209731101 U CN209731101 U CN 209731101U CN 201822203983 U CN201822203983 U CN 201822203983U CN 209731101 U CN209731101 U CN 209731101U
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Abstract
The utility model relates to the conversion between AC and DC and field is controlled or regulated, it is specially a kind of to provide the constant-current source of reference current for electric car.It is a kind of to provide the constant-current source of reference current for electric car, including the first output module (1), first output module (1) exports direct current by output end, it is characterized in that: further including the second output module (2), third output module (3), the 4th output module (4), main output module (5) and current output module (6).The utility model is high-efficient, and precision is high, is swift in response.
Description
Technical field
The utility model relates to the conversion between AC and DC and field is controlled or regulated, it is specially a kind of for electricity
The constant-current source of electrical automobile offer reference current.
Background technique
Constant-current source is a kind of wide spectrum, high-precision stabilized current supply, has a fast response time, and constant current accuracy is high, can be long-term
Steady operation, the advantages that being suitble to various properties load (resistive, perceptual, capacitive).Mainly for detection of electrothermal relay, plastic housing open circuit
Device, small-sized short-circuiting device and the production occasion such as need to set rated current, action current, short circuit current protection.Currently, new energy vehicle
It is just increasingly popularized, new energy vehicle generallys use electric drive, and constant-current source is needed to provide stable electric current for driving, controlling
The operation such as system.But current constant current source device, that there is also response speeds is slow, current precision is low, transfer efficiency is low lacks
Point affects the use of new energy vehicle.
Utility model content
In order to overcome the drawbacks of the prior art, provide it is a kind of it is high-efficient, precision is high, willing electric current conversion equipment,
The constant-current source of reference current is provided for electric car the utility model discloses a kind of.
The utility model reaches goal of the invention by following technical solution:
A kind of to provide the constant-current source of reference current, including the first output module for electric car, the first output module is logical
Cross output end output direct current, it is characterized in that: further include the second output module, third output module, the 4th output module, master it is defeated
Module and current output module out,
Second output module includes bar connector, the first inductance, the second inductance, third inductance, first capacitor, the second electricity
Appearance, third capacitor, the 4th capacitor, the 5th capacitor and the 6th capacitor,
The high-potential output end of bar connector is separately connected one end of the first inductance and one end of first capacitor, the first electricity
The other end of sense is separately connected one end of the second capacitor and one end of third capacitor,
The low potential output end of bar connector is separately connected one end of the second inductance and one end of the 4th capacitor, the second electricity
The other end of sense is separately connected one end of the 5th capacitor and one end of the 6th capacitor,
The middle current potential output end of bar connector is separately connected the other end of first capacitor, the other end of the 4th capacitor and
One end of three inductance, the other end of third inductance are separately connected the other end of the second capacitor, the other end of third capacitor, the 5th electricity
The other end of the other end of appearance and the 6th capacitor,
Anode output of the connecting pin as the second output module of first inductance, the second capacitor and third capacitor this three
End, cathode output end of the connecting pin of the second inductance, the 5th capacitor and the 6th capacitor this three as the second output module, third
Ground connection of this connecting pin of inductance, the second capacitor, third capacitor, the 5th capacitor and the 6th capacitor as the second output module
End；
Third output module includes main operational amplifier, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th
Resistance, the 6th resistance, the 7th resistance and the 8th resistance,
The cathode output end of first output module connects main operational amplifier after being sequentially connected in series first resistor and second resistance
The first non-inverting input terminal, one end after both 3rd resistor and the 4th resistance are mutually in parallel connects the of main operational amplifier
Ground terminal of the one non-inverting input terminal other end as third output module, the first inverting input terminal of main operational amplifier are successively gone here and there
Join the ground terminal after the 5th resistance and the 6th resistance as third output module, both the 7th resistance and the 8th resistance are mutually simultaneously
The first inverting input terminal and output end of main operational amplifier are separately connected after connection,
Second non-inverting input terminal of the cathode output end connection main operational amplifier of the second output module, the second output module
Cathode output end connection main operational amplifier the second inverting input terminal, the output end of main operational amplifier is as third output
The output end of module；
4th output module includes photoelectrical coupler, contactor, the 9th resistance, the tenth resistance, eleventh resistor, the 12nd
Resistance, the first triode and first diode,
Use light emitting diode as light emitting source, using phototriode as light-receiving device in photoelectrical coupler, third is defeated
The output end of module has connected and has connected the anode of light emitting diode in photoelectrical coupler after the 9th resistance out, light in photoelectrical coupler
Ground terminal of the emitter of quick triode as the 4th output module, the collector of phototriode connects respectively in photoelectrical coupler
Connecing one end of the tenth resistance and one end of eleventh resistor, the other end of the tenth resistance connects the base stage of the first triode, and first
One end of the emitter connection twelfth resistor of triode, the other end of eleventh resistor are connected with the other end of twelfth resistor
Reconnect the cathode output end of the second output module afterwards, the collector of the first triode be separately connected contactor coil one end and
As the 4th output module after the cathode of first diode, the other end of contactor coil and the anode connection of first diode
Ground terminal, output end of the both ends of contactor moving together contact as the 4th output module；
Main output module is put including the first operational amplifier, second operational amplifier, third operational amplifier, the 4th operation
Big device, the 5th operational amplifier, the 7th capacitor, the 8th capacitor, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th
Resistance, the 17th resistance, the 18th resistance, the 19th resistance, the 20th resistance, the 21st resistance, the 22nd resistance,
23 resistance, the 24th resistance and the second triode,
High potential input terminal of first non-inverting input terminal of the first operational amplifier as main output module, the first operation are put
First inverting input terminal of big device is separately connected one end of thirteenth resistor and one end of the 14th resistance, thirteenth resistor it is another
One end is separately connected the output end of the first operational amplifier and one end of the 15th resistance, and the other end of the 15th resistance connects respectively
The first non-inverting input terminal of one end and second operational amplifier of the 16th resistance is connect, the other end of the 16th resistance is as main output
The ground terminal of module, the other end of the 14th resistance be separately connected the 17th resistance one end and third operational amplifier first
Inverting input terminal, the other end of the 17th resistance be separately connected third operational amplifier output end and the 18th resistance one
End, low potential input terminal of the first normal phase input end of third operational amplifier as main output module, the 18th resistance it is another
One end is separately connected the first inverting input terminal of second operational amplifier and one end of the 19th resistance, the 19th resistance it is another
End is separately connected the output end of second operational amplifier and one end of the 20th resistance, and the other end of the 20th resistance is separately connected
The first inverting input terminal, one end of the 7th capacitor and one end of the 8th capacitor of four-operational amplifier, four-operational amplifier
Output end be separately connected the other end, the other end of the 8th capacitor and one end of the 21st resistance of the 7th capacitor, the 20th
The other end of one resistance connects the first non-inverting input terminal of the 5th operational amplifier, and the output end of the 5th operational amplifier is connected
The base stage of the second triode is connected after 22nd resistance, the collector of the second triode connects the second of the 5th operational amplifier
Non-inverting input terminal, the emitter of the second triode are separately connected one end of the 23rd resistance and one end of the 24th resistance,
Ground terminal of the other end of 23rd resistance as main output module, the other end of the 24th resistance connect the 5th operation and put
First inverting input terminal of big device and output end as main output module, the cathode output end of the second output module are separately connected
First operational amplifier, second operational amplifier, third operational amplifier, four-operational amplifier and the 5th operational amplifier this
Five the second non-inverting input terminal, the cathode output end of the second output module are separately connected the first operational amplifier, the second operation
The second inverting input terminal of this three of amplifier and third operational amplifier, four-operational amplifier and the 5th operational amplifier this
Second inverting input terminal of the two is all used as ground terminal；
Current output module includes dividing cell, the 26th resistance and the 27th resistance,
For current output module altogether there are two current output terminal, dividing cell includes at least two shunting triodes and at least two
A shunt resistance, each emitter for shunting triode interconnect, and each collector for shunting triode interconnects and makees
One end for a current output terminal of current output module, each shunt resistance interconnects and as current output module
Input terminal, the other end of each shunt resistance are separately connected the base stage of a shunting triode, the 26th resistance and the 20th
Seven resistance are mutually in parallel, and a public connecting end of the 26th resistance and the 27th resistance is as the low of current output module
Another public connecting end connection of current potential output end and another current output terminal, the 26th resistance and the 27th resistance
Each emitter public connecting end for shunting triode and the high-potential output end as current output module, current output module
Low potential output end connect the low potential input terminal of main output module, the high-potential output end connection master of current output module is defeated
The high potential input terminal of module out, the input terminal of the output end connection current output module of main output module.
Described provides the constant-current source of reference current for electric car, it is characterized in that: the first output module includes power supply
Managing chip, the 9th capacitor, the tenth capacitor, the 25th resistance and the second voltage-stabiliser tube,
The direct-flow input end of power management chip be separately connected one end of the 25th resistance, the second voltage-stabiliser tube cathode and
The other end of one end of the 9th capacitor, the 25th resistance connects external dc power, the other end of the 9th capacitor, the second pressure stabilizing
Positive and power management chip the ground terminal of pipe is sequentially connected and the ground terminal as power management chip, power management chip
Output end pass through the ground terminal of the tenth capacitance connection power management chip and the output end as the first output module.
When the utility model is used, two current output terminals of current output module are shorted with heavy gauge wire, flow through electric current
The electric current of two current output terminals of output module sharply increases, when electric current increases to predetermined value (such as 50A), main output module from
High potential input terminal and the voltage sample value of low potential input terminal input are close to reference value, and main output module passes through output end at this time
Pick-off signal is exported to the input terminal of current output module, locates the shunting triode of each dividing cell of current output module all
In off state；And after the electric current for flowing through two current output terminals of current output module deteriorates to less than predetermined value, main output
Module exports Continuity signal to the input terminal of current output module by output end, makes each dividing cell of current output module
Triode is shunted all on state, to increase electric current；Repeatedly, make two current output terminals of current output module
Electric current is stablized in predetermined value with constant output.
The utility model overcomes defect big using the constant-current source device current fluctuation of PWM output at present, this is practical new
Type can direct current output, electric current do not have a ripple, and is lost small high-efficient, is conducive to energy saving.
Detailed description of the invention
Fig. 1 is the circuit diagram of the first output module in the utility model；
Fig. 2 is the circuit diagram of the second output module in the utility model；
Fig. 3 is the circuit diagram of third output module in the utility model；
Fig. 4 is the circuit diagram of the 4th output module in the utility model；
Fig. 5 is the circuit diagram of main output module in the utility model；
Fig. 6 is the circuit diagram of current output module in the utility model.
Specific embodiment
The utility model is further illustrated below by way of specific embodiment.
Embodiment 1
It is a kind of for electric car provide reference current constant-current source, including the first output module 1, the second output module 2,
Third output module 3, the 4th output module 4, main output module 5 and current output module 6 are as shown in Fig. 1~Fig. 6, specific to tie
Structure is:
The first output module 1 includes power management chip 11, the 9th capacitor 309, the to first output module 1 as shown in Figure 1:
Ten capacitors 310, the 25th resistance 425 and the second voltage-stabiliser tube 602,
The direct-flow input end of power management chip 11 is separately connected one end of the 25th resistance 425, the second voltage-stabiliser tube 602
Cathode and the 9th capacitor 309 one end, the other end of the 25th resistance 425 connects external dc power, the 9th capacitor 309
The other end, the anode of the second voltage-stabiliser tube 602 and the ground terminal of power management chip 11 be sequentially connected and as power management core
The ground terminal of piece 11, the output end of power management chip 11 connect the ground terminal of power management chip 11 by the tenth capacitor 310
And the output end as the first output module 1, the first output module 1 export direct current by output end；
Second output module 2 is as shown in Figure 2: the second output module 2 includes bar connector 21, the first inductance 201, second
Inductance 202, third inductance 203, first capacitor 301, the second capacitor 302, third capacitor 303, the 4th capacitor 304, the 5th capacitor
305 and the 6th capacitor 306,
The high-potential output end of bar connector 21 be separately connected the first inductance 201 one end and first capacitor 301 one
End, the other end of the first inductance 201 are separately connected one end of the second capacitor 302 and one end of third capacitor 303,
The low potential output end of bar connector 21 be separately connected the second inductance 202 one end and the 4th capacitor 304 one
End, the other end of the second inductance 202 are separately connected one end of the 5th capacitor 305 and one end of the 6th capacitor 306,
The middle current potential output end of bar connector 21 be separately connected the other end of first capacitor 301, the 4th capacitor 304 it is another
One end of one end and third inductance 203, the other end of third inductance 203 are separately connected the other end of the second capacitor 302, third electricity
Hold 303 other end, the other end of the 5th capacitor 305 and the other end of the 6th capacitor 306,
The connecting pin of 303 this three of first inductance 201, the second capacitor 302 and third capacitor is as the second output module 2
Cathode output end, the second inductance 202, the 5th capacitor 305 and the connecting pin of 306 this three of the 6th capacitor are as the second output module
2 cathode output end, third inductance 203, the second capacitor 302, third capacitor 303, the 5th capacitor 305 and the 6th capacitor 306 this
Ground terminal of five connecting pin as the second output module 2；
Third output module 3 is as shown in Figure 3: third output module 3 includes main operational amplifier 31, first resistor 401, the
Two resistance 402,3rd resistor 403, the 4th resistance 404, the 5th resistance 405, the 6th resistance 406, the 7th resistance 407 and the 8th electricity
Resistance 408,
The cathode output end of first output module 1 connects main operation after being sequentially connected in series first resistor 401 and second resistance 402
One end after both first non-inverting input terminal of amplifier 31,3rd resistor 403 and the 4th resistance 404 are mutually in parallel connects master
Ground terminal of the first non-inverting input terminal other end of operational amplifier 31 as third output module 3, main operational amplifier 31
First inverting input terminal is sequentially connected in series the ground terminal after the 5th resistance 405 and the 6th resistance 406 as third output module 3, the
Both seven resistance 407 and the 8th resistance 408 are separately connected the first inverting input terminal of main operational amplifier 31 after being mutually in parallel
And output end,
Second non-inverting input terminal of the cathode output end connection main operational amplifier 31 of the second output module 2, the second output
Second inverting input terminal of the cathode output end connection main operational amplifier 31 of module 2, the output end of main operational amplifier 31 are made
For the output end of third output module 3；
4th output module 4 is as shown in Figure 4: the 4th output module 4 includes photoelectrical coupler 41, the 42, the 9th electricity of contactor
The 409, the tenth resistance 410, eleventh resistor 411, twelfth resistor 412, the first triode 501 and first diode 601 are hindered,
Use light emitting diode as light emitting source, using phototriode as light-receiving device, third in photoelectrical coupler 41
The output end of output module 3, which has been connected, connects the anode of light emitting diode in photoelectrical coupler 41, photoelectricity coupling after the 9th resistance 409
Ground terminal of the emitter of phototriode as the 4th output module 4 in clutch 41, phototriode in photoelectrical coupler 41
Collector be separately connected one end of the tenth resistance 410 and one end of eleventh resistor 411, the other end of the tenth resistance 410 connects
Connect the base stage of the first triode 501, one end of the emitter connection twelfth resistor 412 of the first triode 501, eleventh resistor
411 other end reconnects the cathode output end of the second output module 2 after connecting with the other end of twelfth resistor 412, and first
The collector of triode 501 is separately connected one end of 42 coil of contactor and the cathode of first diode 601,42 coil of contactor
The other end and first diode 601 anode connection after ground terminal as the 4th output module 4,42 moving together contact of contactor
Output end of the both ends as the 4th output module 4；
Main output module 5 is as shown in Figure 5: main output module 5 includes the first operational amplifier 51, second operational amplifier
52, third operational amplifier 53, four-operational amplifier 54, the 5th operational amplifier 55, the 7th capacitor 307, the 8th capacitor
308, thirteenth resistor 413, the 14th resistance 414, the 15th resistance 415, the 16th resistance 416, the 17th resistance 417,
18 resistance 418, the 19th resistance 419, the 20th resistance 420, the 21st resistance 421, the 22nd resistance 422, second
13 resistance 423, the 24th resistance 424 and the second triode 502,
High potential input terminal of first non-inverting input terminal of the first operational amplifier 51 as main output module 5, the first fortune
The first inverting input terminal for calculating amplifier 51 is separately connected one end of thirteenth resistor 413 and one end of the 14th resistance 414, the
The other end of 13 resistance 413 is separately connected the output end of the first operational amplifier 51 and one end of the 15th resistance 415, and the tenth
The other end of five resistance 415 is separately connected 52 first non-inverting input terminal of one end and second operational amplifier of the 16th resistance 416,
Ground terminal of the other end of 16th resistance 416 as main output module 5, the other end of the 14th resistance 414 are separately connected
One end of 17 resistance 417 and the first inverting input terminal of third operational amplifier 53, the other end difference of the 17th resistance 417
Connect the output end of third operational amplifier 53 and one end of the 18th resistance 418, the first positive of third operational amplifier 53
Low potential input terminal of the input terminal as main output module 5, the other end of the 18th resistance 418 are separately connected the second operation amplifier
First inverting input terminal of device 52 and one end of the 19th resistance 419, the other end of the 19th resistance 419 are separately connected the second fortune
The output end of amplifier 52 and one end of the 20th resistance 420 are calculated, the other end of the 20th resistance 420 is separately connected the 4th operation
The first inverting input terminal, one end of the 7th capacitor 307 and one end of the 8th capacitor 308 of amplifier 54, four-operational amplifier
54 output end is separately connected the other end of the 7th capacitor 307, the other end of the 8th capacitor 308 and the 21st resistance 421
One end, the other end of the 21st resistance 421 connect the first non-inverting input terminal of the 5th operational amplifier 55, the 5th operation amplifier
The output end of device 55, which has been connected, connects the base stage of the second triode 502, the collection of the second triode 502 after the 22nd resistance 422
Electrode connects the second non-inverting input terminal of the 5th operational amplifier 55, and the emitter of the second triode 502 is separately connected the 20th
One end of three resistance 423 and one end of the 24th resistance 424, the other end of the 23rd resistance 423 is as main output module 5
Ground terminal, the first inverting input terminal that the other end of the 24th resistance 24 connects the 5th operational amplifier 55 is simultaneously defeated as master
The output end of module 5 out, the cathode output end of the second output module 2 is separately connected the first operational amplifier 51, the second operation is put
Big device 52, third operational amplifier 53, four-operational amplifier 54 and the 5th operational amplifier 55 this second with mutually defeated
Enter end, the cathode output end of the second output module 2 is separately connected the first operational amplifier 51, second operational amplifier 52 and third
Both the second inverting input terminal of 53 this three of operational amplifier, four-operational amplifier 54 and the 5th operational amplifier 55
Second inverting input terminal is all used as ground terminal；
Current output module 6 is as shown in Figure 6: current output module 6 includes dividing cell 61,426 and of the 26th resistance
27th resistance 427,
For current output module 6 altogether there are two current output terminal, dividing cell 61 includes at least two shunting 503 Hes of triode
At least two shunt resistances 428, each emitter for shunting triode 503 interconnect, each current collection for shunting triode 503
Pole interconnects and a current output terminal as current output module 6, and one end of each shunt resistance 428 interconnects simultaneously
As the input terminal of current output module 6, the other end of each shunt resistance 428 is separately connected a shunting triode 503
Base stage, the 26th resistance 426 and the 27th resistance 427 are mutually in parallel, the 26th resistance 426 and the 27th resistance
Low potential output end and another current output terminal of 427 public connecting end as current output module 6, the 26th
Resistance 426 connects each public company of emitter for shunting triode 503 with another public connecting end of the 27th resistance 427
End and the high-potential output end as current output module 6 are connect, the low potential output end of current output module 6 connects main output mould
The low potential input terminal of block 5, the high-potential output end of current output module 6 connect the high potential input terminal of main output module 5, main
The input terminal of the output end connection current output module 6 of output module 5.
It is defeated to flow through electric current in use, two current output terminals of current output module 6 are shorted with heavy gauge wire for the present embodiment
The electric current of 6 two current output terminals of module sharply increases out, when electric current increases to predetermined value (such as 50A), main output module 5 from
High potential input terminal and the voltage sample value of low potential input terminal input are close to reference value, and main output module 5 passes through output at this time
It holds to the input terminal of current output module 6 and exports pick-off signal, make three pole of shunting of each dividing cell 61 of current output module 6
Pipe 503 is all in off state；And when the electric current for flowing through 6 two current output terminals of current output module deteriorates to less than predetermined value
Afterwards, main output module 5 exports Continuity signal to the input terminal of current output module 6 by output end, keeps current output module 6 each
The shunting triode 503 of a dividing cell 61 is all on state, to increase electric current；Repeatedly, electric current is made to export mould
The electric current of 6 two current output terminals of block is stablized in predetermined value with constant output.
Claims (2)
1. a kind of provide the constant-current source of reference current, including the first output module (1), the first output module for electric car
(1) direct current is exported by output end, it is characterized in that: further including the second output module (2), third output module (3), the 4th defeated
Module (4), main output module (5) and current output module (6) out,
Second output module (2) includes bar connector (21), the first inductance (201), the second inductance (202), third inductance
(203), first capacitor (301), the second capacitor (302), third capacitor (303), the 4th capacitor (304), the 5th capacitor (305) and
6th capacitor (306),
The high-potential output end of bar connector (21) is separately connected one end and the first capacitor (301) of the first inductance (201)
One end, the other end of the first inductance (201) are separately connected one end of the second capacitor (302) and one end of third capacitor (303),
The low potential output end of bar connector (21) is separately connected one end and the 4th capacitor (304) of the second inductance (202)
One end, the other end of the second inductance (202) are separately connected one end of the 5th capacitor (305) and one end of the 6th capacitor (306),
The middle current potential output end of bar connector (21) is separately connected the other end of first capacitor (301), the 4th capacitor (304)
One end of the other end and third inductance (203), the other end of third inductance (203) are separately connected the another of the second capacitor (302)
End, the other end of third capacitor (303), the other end of the 5th capacitor (305) and the 6th capacitor (306) the other end,
First inductance (201), the second capacitor (302) and third capacitor (303) this three connecting pin as the second output module
(2) cathode output end, the connecting pin conduct of the second inductance (202), the 5th capacitor (305) and the 6th capacitor (306) this three
The cathode output end of second output module (2), third inductance (203), the second capacitor (302), third capacitor (303), the 5th electricity
Hold ground terminal of this connecting pin of (305) and the 6th capacitor (306) as the second output module (2)；
Third output module (3) includes main operational amplifier (31), first resistor (401), second resistance (402), 3rd resistor
(403), the 4th resistance (404), the 5th resistance (405), the 6th resistance (406), the 7th resistance (407) and the 8th resistance (408),
The cathode output end of first output module (1) is sequentially connected in series first resistor (401) and second resistance (402) connects main fortune afterwards
Calculate first non-inverting input terminal of amplifier (31), both 3rd resistor (403) and the 4th resistance (404) are mutual be in parallel after one
Ground terminal of the first non-inverting input terminal other end of end connection main operational amplifier (31) as third output module (3), main fortune
The first inverting input terminal for calculating amplifier (31) is sequentially connected in series the 5th resistance (405) and the 6th resistance (406) and is used as third defeated afterwards
Both the ground terminal of module (3) out, the 7th resistance (407) and the 8th resistance (408) are separately connected main operation after being mutually in parallel
The first inverting input terminal and output end of amplifier (31),
Second non-inverting input terminal of cathode output end connection main operational amplifier (31) of the second output module (2), the second output
Module (2) cathode output end connection main operational amplifier (31) the second inverting input terminal, main operational amplifier (31) it is defeated
Output end of the outlet as third output module (3)；
4th output module (4) include photoelectrical coupler (41), contactor (42), the 9th resistance (409), the tenth resistance (410),
Eleventh resistor (411), twelfth resistor (412), the first triode (501) and first diode (601),
Use light emitting diode as light emitting source, using phototriode as light-receiving device in photoelectrical coupler (41), third is defeated
The output end of module (3) the 9th resistance (409) of having connected connects the anode of light emitting diode in photoelectrical coupler (41), light afterwards out
Ground terminal of the emitter of phototriode as the 4th output module (4) in electric coupler (41), in photoelectrical coupler (41)
The collector of phototriode is separately connected one end of the tenth resistance (410) and one end of eleventh resistor (411), the tenth resistance
(410) emitter of the base stage of other end connection the first triode (501), the first triode (501) connects twelfth resistor
(412) one end, the other end of eleventh resistor (411) reconnect second after connecting with the other end of twelfth resistor (412)
The cathode output end of output module (2), the collector of the first triode (501) be separately connected contactor (42) coil one end and
Conduct after the cathode of first diode (601), the other end of contactor (42) coil and the anode connection of first diode (601)
The ground terminal of 4th output module (4), output end of the both ends of contactor (42) moving together contact as the 4th output module (4)；
Main output module (5) includes the first operational amplifier (51), second operational amplifier (52), third operational amplifier
(53), four-operational amplifier (54), the 5th operational amplifier (55), the 7th capacitor (307), the 8th capacitor (308), the 13rd
Resistance (413), the 14th resistance (414), the 15th resistance (415), the 16th resistance (416), the 17th resistance (417),
18 resistance (418), the 19th resistance (419), the 20th resistance (420), the 21st resistance (421), the 22nd resistance
(422), the 23rd resistance (423), the 24th resistance (424) and the second triode (502),
High potential input terminal of first non-inverting input terminal of the first operational amplifier (51) as main output module (5), the first fortune
The first inverting input terminal for calculating amplifier (51) is separately connected one end and the 14th resistance (414) of thirteenth resistor (413)
One end, the other end of thirteenth resistor (413) are separately connected the output end and the 15th resistance of the first operational amplifier (51)
(415) other end of one end, the 15th resistance (415) is separately connected one end of the 16th resistance (416) and the second operation is put
(52) first non-inverting input terminal of big device, ground terminal of the other end of the 16th resistance (416) as main output module (5), the tenth
The other end of four resistance (414) be separately connected the 17th resistance (417) one end and third operational amplifier (53) it is first anti-
Phase input terminal, the other end of the 17th resistance (417) are separately connected the output end and the 18th electricity of third operational amplifier (53)
The one end of (418) is hindered, the first normal phase input end of third operational amplifier (53) is inputted as the low potential of main output module (5)
End, the other end of the 18th resistance (418) are separately connected the first inverting input terminal and the 19th of second operational amplifier (52)
One end of resistance (419), the other end of the 19th resistance (419) are separately connected the output end and of second operational amplifier (52)
It is first anti-to be separately connected four-operational amplifier (54) for one end of 20 resistance (420), the other end of the 20th resistance (420)
Phase input terminal, one end of the 7th capacitor (307) and the 8th capacitor (308) one end, the output end of four-operational amplifier (54)
It is separately connected the other end, the other end of the 8th capacitor (308) and one end of the 21st resistance (421) of the 7th capacitor (307),
The other end of 21st resistance (421) connects the first non-inverting input terminal of the 5th operational amplifier (55), the 5th operation amplifier
The output end of device (55) the 22nd resistance (422) of having connected connects the base stages of the second triode (502), the second triode afterwards
(502) collector connects the second non-inverting input terminal of the 5th operational amplifier (55), the emitter point of the second triode (502)
Not Lian Jie one end of the 23rd resistance (423) and one end of the 24th resistance (424), the 23rd resistance (423) it is another
The other end of ground terminal of the one end as main output module (5), the 24th resistance (24) connects the 5th operational amplifier (55)
The first inverting input terminal and output end as main output module (5), the cathode output end of the second output module (2) connect respectively
Connect the first operational amplifier (51), second operational amplifier (52), third operational amplifier (53), four-operational amplifier (54)
With this second non-inverting input terminal of the 5th operational amplifier (55), the cathode output end of the second output module (2) connects respectively
It is defeated to connect the first operational amplifier (51), the second reverse phase of second operational amplifier (52) and third operational amplifier (53) this three
Enter to hold, second inverting input terminal of four-operational amplifier (54) and the 5th operational amplifier (55) the two is all as ground connection
End；
Current output module (6) includes dividing cell (61), the 26th resistance (426) and the 27th resistance (427),
For current output module (6) altogether there are two current output terminal, dividing cell (61) includes at least two shuntings triode (503)
With at least two shunt resistances (428), each emitter for shunting triode (503) is interconnected, each shunting triode
(503) collector interconnects and a current output terminal as current output module (6), each shunt resistance (428)
One end interconnect and the input terminal as current output module (6), the other end of each shunt resistance (428) be separately connected
One shunts the base stage of triode (503), and the 26th resistance (426) and the 27th resistance (427) are mutually in parallel, and the 20th
One public connecting end of six resistance (426) and the 27th resistance (427) is exported as the low potential of current output module (6)
Another public connecting end of end and another current output terminal, the 26th resistance (426) and the 27th resistance (427) connects
Connect each emitter public connecting end for shunting triode (503) and the high-potential output end as current output module (6), electricity
The low potential output end for flowing output module (6) connects the low potential input terminal of main output module (5), current output module (6)
High-potential output end connects the high potential input terminal of main output module (5), the output end connection electric current output of main output module (5)
The input terminal of module (6).
2. the constant-current source of reference current is provided for electric car as described in claim 1, it is characterized in that: the first output module
It (1) include that power management chip (11), the 9th capacitor (309), the tenth capacitor (310), the 25th resistance (425) and second are steady
Pressure pipe (602),
The direct-flow input end of power management chip (11) is separately connected one end of the 25th resistance (425), the second voltage-stabiliser tube
(602) one end of cathode and the 9th capacitor (309), the other end of the 25th resistance (425) connect external dc power, the
The ground terminal of the other end of nine capacitors (309), the anode of the second voltage-stabiliser tube (602) and power management chip (11) is sequentially connected simultaneously
As the ground terminal of power management chip (11), the output end of power management chip (11) passes through the tenth capacitor (310) connection electricity
The ground terminal of source control chip (11) and output end as the first output module (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822203983.5U CN209731101U (en) | 2018-12-26 | 2018-12-26 | The constant-current source of reference current is provided for electric car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822203983.5U CN209731101U (en) | 2018-12-26 | 2018-12-26 | The constant-current source of reference current is provided for electric car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350805A (en) * | 2018-12-26 | 2019-10-18 | 格至控智能动力科技（上海）有限公司 | The constant-current source of reference current is provided for electric car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350805A (en) * | 2018-12-26 | 2019-10-18 | 格至控智能动力科技（上海）有限公司 | The constant-current source of reference current is provided for electric car |
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