CN105932732B - Circuit breaker control circuit, electric automobile battery charger running control circuit and method - Google Patents
Circuit breaker control circuit, electric automobile battery charger running control circuit and method Download PDFInfo
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- CN105932732B CN105932732B CN201610318756.XA CN201610318756A CN105932732B CN 105932732 B CN105932732 B CN 105932732B CN 201610318756 A CN201610318756 A CN 201610318756A CN 105932732 B CN105932732 B CN 105932732B
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Classifications
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- H02J7/0027—
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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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
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses circuit breaker control circuit, electric automobile battery charger running control circuit and method, circuit breaker control circuit includes logical AND non-device, its input terminal is respectively connected with charging current judgment module and charger input moment judgment module；Charging current judgment module includes first comparator, its first input end and the second input terminal are connected with charging current signal Acquisition Circuit and current threshold input circuit respectively, and the first comparison circuit will receive signal and be compared and export high level signal or low level signal is to logical AND non-device；Charger input moment judgment module includes the second comparator, respectively with charger input moment pulse signal input circuit and putting into moment threshold value pulse signal input circuit and being connected, the second comparison circuit will receive signal and be compared and export high level signal or low level signal is to logical AND non-device for its first input end and the second input terminal；Logical AND non-device exports trigger signal to control the opening and closing of breaker.
Description
Technical field
The invention belongs to electric automobile field, more particularly to a kind of circuit breaker control circuit, electric automobile battery charger to run
Control circuit and method.
Background technology
In order to reduce greenhouse gas emission and reduce the dependence to petroleum import, clean energy resource development, country are promoted energetically
Grid company adds up to build up intelligent substation 2300, electric charging station 1537, charging pile 2.96 ten thousand in the whole nation.With electronic
Automobile accesses power grid, it is necessary to realize effective management and control to the charging pile in charging station on a large scale.
Electric automobile battery charger is a kind of equipment for the Vehicular battery charging for aiming at electric automobile, is used when being and charging to battery
To the power inverter for having specific function.The necessary means that electric automobile battery charger charges as battery, its performance it is good
Bad and process complexity directly affects the service life of battery and the popularization of electric automobile.Existing electric automobile battery charger operation
Control circuit is more complicated, and hardware configuration is fixed, and expansibility is poor, and existing electric automobile battery charger running control circuit is equal
Charging station actual demand is not accounted for, control charger is not provided with and puts into operation the time, and then can not achieve charging station peak valley intelligence
Charging to carry out effective management and control to whole charging station, ultimately causes the wasting of resources and adds charging cost.
The content of the invention
The shortcomings that in order to solve the prior art, the present invention provide a kind of circuit breaker control circuit, electric automobile battery charger fortune
Line control circuit and method.The electric automobile battery charger running control circuit is simple and reliable, and economy is high, and hardware configuration spirit
Live, it can be achieved that multi-vector input controls, consideration charging station actual demand, adds the function of intelligent preset charged time, pass through
Control charger puts into operation the time, it can be achieved that charging station peak valley intelligent charge, and then carries out effective management and control to whole charging station, greatly
Save charging cost.
To achieve the above object, the present invention uses following technical scheme：
A kind of circuit breaker control circuit, including logical AND non-device, input terminal and the charging electricity of the logical AND non-device
Stream judgment module and charger input moment judgment module are respectively connected with；
The charging current judgment module includes first comparator, the first input end of the first comparator and second defeated
Enter end respectively with charging current signal Acquisition Circuit and current threshold input circuit to be connected, the first comparison circuit will receive signal
It is compared and exports high level signal or low level signal is to logical AND non-device；
Charger input moment judgment module includes the second comparator, the first input end of second comparator with
Second input terminal puts into moment pulse signal input circuit and input moment threshold value pulse signal input circuit with charger respectively
It is connected, the second comparison circuit will receive signal and be compared and export high level signal or low level signal is to the non-device of logical AND
Part；The logical AND non-device carries out logical process to received signal, exports trigger signal to control the opening and closing of breaker.
The circuit breaker control circuit, which further includes charger operation, allows signal input circuit；The charger operation allows
Signal input circuit output charger operation allows signal, is sent to logical AND non-device；The charger operation allows signal
For high level signal or low level signal.
The charging current signal Acquisition Circuit includes current transformer, one end connection charging of the current transformer
Machine, the other end connect the first input end of first comparator.
The charger operation allows signal input circuit to be pulse-generating circuit.
A kind of method of work of circuit breaker control circuit, including：
Step (1)：The charging current signal collected is sent in first comparator by charging current signal Acquisition Circuit,
First comparator by the charging current signal of reception compared with the current threshold that current threshold input circuit exports, if the former is more than
Or equal to the latter, then high level signal is exported to logical AND non-device；Otherwise, low level signal is exported to logical AND non-device；
Step (2)：Charger puts into moment pulse signal input circuit and charger input time-ofday signals is sent to second
In comparator, the second comparator is defeated by the charger input time-ofday signals of reception and input moment threshold value pulse signal input circuit
The input moment threshold value comparison gone out, if the former is greater than or equal to the latter, output high level signal to logical AND non-device；It is no
Then, low level signal is exported to logical AND non-device；
Step (3)：Charger operation, which allows signal input circuit to run charger, to be allowed signal to be sent to logical AND non-
Device；
Step (4)：Logical AND non-device carries out logical process to received signal, when logical AND non-device received signal
It is high level signal, then exports trigger signal to control the closure of breaker；Otherwise, trigger signal is exported to control breaker
Opening；Wherein, the order of step (1), step (2) and step (3) can be replaced arbitrarily.
A kind of electric automobile battery charger running control circuit, including breaker, its output terminal connection charger, input terminal connect
Connect circuit breaker control circuit；
The circuit breaker control circuit includes logical AND non-device, the input terminal and charging current of the logical AND non-device
Judgment module and charger input moment judgment module are respectively connected with；
The charging current judgment module includes first comparator, the first input end of the first comparator and second defeated
Enter end respectively with charging current signal Acquisition Circuit and current threshold input circuit to be connected, the first comparison circuit will receive signal
It is compared and exports high level signal or low level signal is to logical AND non-device；
Charger input moment judgment module includes the second comparator, the first input end of second comparator with
Second input terminal puts into moment pulse signal input circuit and input moment threshold value pulse signal input circuit with charger respectively
It is connected, the second comparison circuit will receive signal and be compared and export high level signal or low level signal is to the non-device of logical AND
Part；The logical AND non-device carries out logical process to received signal, exports trigger signal to control the opening and closing of breaker.
The circuit breaker control circuit, which further includes charger operation, allows signal input circuit；The charger operation allows
Signal input circuit output charger operation allows signal, is sent to logical AND non-device；The charger operation allows signal
For high level signal or low level signal.
The charging current signal Acquisition Circuit includes current transformer, one end connection charging of the current transformer
Machine, the other end connect the first input end of first comparator.
The charger operation allows signal input circuit to be pulse-generating circuit.
A kind of method of work of electric automobile battery charger running control circuit, including：
Step (1)：The charging current signal collected is sent in first comparator by charging current signal Acquisition Circuit,
First comparator by the charging current signal of reception compared with the current threshold that current threshold input circuit exports, if the former is more than
Or equal to the latter, then high level signal is exported to logical AND non-device；Otherwise, low level signal is exported to logical AND non-device；
Step (2)：Charger puts into moment pulse signal input circuit and charger input time-ofday signals is sent to second
In comparator, the second comparator is defeated by the charger input time-ofday signals of reception and input moment threshold value pulse signal input circuit
The input moment threshold value comparison gone out, if the former is greater than or equal to the latter, output high level signal to logical AND non-device；It is no
Then, low level signal is exported to logical AND non-device；
Step (3)：Charger operation, which allows signal input circuit to run charger, to be allowed signal to be sent to logical AND non-
Device；
Step (4)：Logical AND non-device carries out logical process to received signal, when logical AND non-device received signal
It is high level signal, then exports trigger signal to control the closure of breaker, charger work；Otherwise, trigger signal is exported
To control the opening of breaker, charger does not work；
Wherein, the order of step (1), step (2) and step (3) can be replaced arbitrarily.
Beneficial effects of the present invention are：
(1) present invention is simple and reliable for structure using logic control circuit and hardware configuration is flexible, hardware configuration scalability
By force, the collection and control to charger major parameter can effectively be realized, and control charger to put into operation by the break-make of breaker.
(2) present invention judges rechargeable battery charged state by detecting charging current, and control charger in time connects switching
Open, avoid over-charging of battery, cause permanent lesion, while consider charging station actual demand, add the intelligent preset charged time
Function, by controlling charger to put into operation the time, it can be achieved that charging station peak valley intelligent charge, and then have to whole charging station
Management and control is imitated, greatly saves charging cost.
Brief description of the drawings
Fig. 1 is the circuit breaker control circuit structure diagram of the present invention；
Fig. 2 is the charging current judgment module structure diagram of the present invention；
Fig. 3 is the charger input moment judgment module structure diagram of the present invention；
Fig. 4 is the electric automobile battery charger running control circuit structure diagram of the present invention.
Embodiment
The present invention will be further described with embodiment below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of circuit breaker control circuit embodiment of the present invention is as follows：
Circuit breaker control circuit includes logical AND non-device, and input terminal and the charging current of the logical AND non-device judge
Module and charger input moment judgment module are respectively connected with.
As shown in Fig. 2, charging current judgment module includes first comparator, the first input end of the first comparator and
Second input terminal is connected with charging current signal Acquisition Circuit and current threshold input circuit respectively, and the first comparison circuit will receive
It is compared to signal and exports high level signal or low level signal is to logical AND non-device.
As shown in figure 3, charger input moment judgment module includes the second comparator, the first of second comparator is defeated
It is defeated with charger input moment pulse signal input circuit and input moment threshold value pulse signal respectively to enter end and the second input terminal
Enter circuit to be connected, the second comparison circuit will receive signal and be compared and export high level signal or low level signal is to logic
With non-device；The logical AND non-device carries out logical process to received signal, exports trigger signal to control breaker
Opening and closing.
The present invention another circuit breaker control circuit embodiment be：
Circuit breaker control circuit in the embodiment, which further includes charger operation, allows signal input circuit；The charger
Operation, which allows signal input circuit to export charger and run, allows signal, is sent to logical AND non-device；The charger operation
It is high level signal or low level signal to allow signal.
Charging current signal Acquisition Circuit includes current transformer, and one end of the current transformer connects charger, separately
One end connects the first input end of first comparator.
Charging current signal Acquisition Circuit further includes filter circuit, dry in the charging current signal collected for filtering out
Disturb signal.
Wherein, charger operation allows signal input circuit to be pulse-generating circuit.The pulse-generating circuit can use DSP
Chip or existing circuit structure are achieved, and will be not repeated herein.
Current threshold input circuit and input moment threshold value pulse signal input circuit can also use pulse-generating circuit
It is achieved or existing signal generating circuit produces.
The present invention is simple and reliable for structure using logic control circuit and hardware configuration is flexible, and hardware configuration scalability is strong,
It can effectively realize the collection and control to charger major parameter, and control charger to put into operation by the break-make of breaker；This hair
It is bright that rechargeable battery state is also monitored by charging current, it can relatively accurately realize the monitoring to rechargeable battery.In addition,
This, which only chooses charging current, charging interval and charger operation, allows signal, these three key parameters control filling for charger
Electric size of current, charging interval and charger operation number of units, greatly simplify circuit, while also ensure that to the effective of charger
Management and control, such as realize time-of-use tariffs charging strategy and reduce charger harmonic current.
The method of work of the circuit breaker control circuit of the present invention, including：
Step (1)：The charging current signal collected is sent in first comparator by charging current signal Acquisition Circuit,
First comparator by the charging current signal of reception compared with the current threshold that current threshold input circuit exports, if the former is more than
Or equal to the latter, then high level signal is exported to logical AND non-device；Otherwise, low level signal is exported to logical AND non-device；
Step (2)：Charger puts into moment pulse signal input circuit and charger input time-ofday signals is sent to second
In comparator, the second comparator is defeated by the charger input time-ofday signals of reception and input moment threshold value pulse signal input circuit
The input moment threshold value comparison gone out, if the former is greater than or equal to the latter, output high level signal to logical AND non-device；It is no
Then, low level signal is exported to logical AND non-device；
Step (3)：Charger operation, which allows signal input circuit to run charger, to be allowed signal to be sent to logical AND non-
Device；
Step (4)：Logical AND non-device carries out logical process to received signal, when logical AND non-device received signal
It is high level signal, then exports trigger signal to control the closure of breaker；Otherwise, trigger signal is exported to control breaker
Opening；Wherein, the order of step (1), step (2) and step (3) can be replaced arbitrarily.
As shown in figure 4, a kind of embodiment of the electric automobile battery charger running control circuit of the present invention is：
Electric automobile battery charger running control circuit in the embodiment, including breaker, its output terminal connection charger,
Input terminal connects circuit breaker control circuit；
The circuit breaker control circuit includes logical AND non-device, the input terminal and charging current of the logical AND non-device
Judgment module and charger input moment judgment module are respectively connected with；
The charging current judgment module includes first comparator, the first input end of the first comparator and second defeated
Enter end respectively with charging current signal Acquisition Circuit and current threshold input circuit to be connected, the first comparison circuit will receive signal
It is compared and exports high level signal or low level signal is to logical AND non-device；
Charger input moment judgment module includes the second comparator, the first input end of second comparator with
Second input terminal puts into moment pulse signal input circuit and input moment threshold value pulse signal input circuit with charger respectively
It is connected, the second comparison circuit will receive signal and be compared and export high level signal or low level signal is to the non-device of logical AND
Part；The logical AND non-device carries out logical process to received signal, exports trigger signal to control the opening and closing of breaker.
The embodiment of another electric automobile battery charger running control circuit of the present invention is：
Circuit breaker control circuit in the electric automobile battery charger running control circuit, further including charger operation allows letter
Number input circuit；The charger operation, which allows signal input circuit to export charger and run, allows signal, is sent to logical AND
Non-device；The charger operation allows signal to be high level signal or low level signal.
Wherein, charging current signal Acquisition Circuit includes current transformer, one end connection charging of the current transformer
Machine, the other end connect the first input end of first comparator.
Charging current signal Acquisition Circuit further includes filter circuit, dry in the charging current signal collected for filtering out
Disturb signal.
Wherein, charger operation allows signal input circuit to be pulse-generating circuit.The pulse-generating circuit can use DSP
Chip or existing circuit structure are achieved, and will be not repeated herein.
Current threshold input circuit and input moment threshold value pulse signal input circuit can also use pulse-generating circuit
It is achieved or existing signal generating circuit produces.
The present invention is simple and reliable for structure using logic control circuit and hardware configuration is flexible, and hardware configuration scalability is strong,
It can effectively realize the collection and control to charger major parameter, and control charger to put into operation by the break-make of breaker；This hair
It is bright that rechargeable battery state is also monitored by charging current, it can relatively accurately realize the monitoring to rechargeable battery.In addition,
This, which only chooses charging current, charging interval and charger operation, allows signal, these three key parameters control filling for charger
Electric size of current, charging interval and charger operation number of units, greatly simplify circuit, while also ensure that to the effective of charger
Management and control, such as realize time-of-use tariffs charging strategy and reduce charger harmonic current.
The method of work of the electric automobile battery charger running control circuit of the present invention, including：
Step (1)：The charging current signal collected is sent in first comparator by charging current signal Acquisition Circuit,
First comparator by the charging current signal of reception compared with the current threshold that current threshold input circuit exports, if the former is more than
Or equal to the latter, then high level signal is exported to logical AND non-device；Otherwise, low level signal is exported to logical AND non-device；
Step (2)：Charger puts into moment pulse signal input circuit and charger input time-ofday signals is sent to second
In comparator, the second comparator is defeated by the charger input time-ofday signals of reception and input moment threshold value pulse signal input circuit
The input moment threshold value comparison gone out, if the former is greater than or equal to the latter, output high level signal to logical AND non-device；It is no
Then, low level signal is exported to logical AND non-device；
Step (3)：Charger operation, which allows signal input circuit to run charger, to be allowed signal to be sent to logical AND non-
Device；
Step (4)：Logical AND non-device carries out logical process to received signal, when logical AND non-device received signal
It is high level signal, then exports trigger signal to control the closure of breaker, charger work；Otherwise, trigger signal is exported
To control the opening of breaker, charger does not work；
Wherein, the order of step (1), step (2) and step (3) can be replaced arbitrarily.
The present invention relies on the switching of breaker, realizes the input of charger and cuts out.Three tunnel control input data are set with,
As source or specific data signal；First via input data is charging current compared with 0.015C as a result, wherein C represents that battery is total
Capacity；Second tunnel input data puts into the moment for charger；3rd tunnel input data represents the number of units of input charger.
The technical solution of the present invention is verified using emulation below：
In PSCAD environment, control planning, first via input parameter charging are reflected by electric operation control circuit figure various logic door
Machine signal out of service represents with A, actual charge current y2Compared with 0.015C, work as y2During ＜ 0.015C, A 0, works as y2≥
During 0.015C, A 1.
Second tunnel inputs parameter and is represented with B, T1Represent the input moment of charging station parameter setting, the moment is according to peak-trough electricity
Determined in valency and charging station with overall height peak time, usual B puts into signal for charger in charging station, when program runs to charging
Stand the T1 set in Parameter Set element when, signal B is 1, thus controls the input moment of charger.
3rd tunnel input parameter represented with control Matrix C, each charger accessed in charging station, if putting into operation this
C is 1, and it is 0 that the charger, which corresponds to C, if out of service, to sum up, can be each by charging station parameter matrix C, setting member, control
Charger puts into operation.
Finally by whether logic gate control breaker, only when three tunnel input signal A, B, C are 1, for controlling
The signal BRK of breaker, is at this time 0, breaker closing；Otherwise, as long as three conditions have one to be unsatisfactory for, breaker will become
Off-state.
In Simulation simulated environment, it is assumed that one operation charging station, stand in have 64 chargers.Can be to charger
All kinds of parameter settings, including input moment, initial capacity, battery basic parameter, input number of units etc..Actual bus charging station fills
The electric time has a certain rule, and Qingdao Xue Jiadao fills that to change the integrated Demonstration Station charge data statistics of storage as follows.
1 electric bus of table, 10 days charging load measurement data units：MW
On the basis of the actual data analysis to being completed and putting into effect, using least square method, carry out curve fitting
Obtain the load curve of charging station.Bus charging station peak period has twice, and one is at night (20:00~05:00), both right and wrong
Service time is again using time-of-use tariffs；Another peak period is noon (10：00~14:00).
According to above charging station data, the present invention can be applied to be controlled above public transport charging station.
Although above-mentioned be described the embodiment of the present invention with reference to attached drawing, model not is protected to the present invention
The limitation enclosed, those skilled in the art should understand that, on the basis of technical scheme, those skilled in the art are not
Need to make the creative labor the various modifications that can be made or deformation still within protection scope of the present invention.
Claims (2)
1. a kind of method of work of circuit breaker control circuit, it is characterised in that it is non-that the circuit breaker control circuit includes logical AND
Device, input terminal and the charging current judgment module and charger input moment judgment module difference phase of the logical AND non-device
Even；
The charging current judgment module includes first comparator, the first input end of the first comparator and the second input terminal
It is connected respectively with charging current signal Acquisition Circuit and current threshold input circuit, the first comparison circuit will receive signal progress
Relatively and high level signal or low level signal are exported to logical AND non-device；
The charger input moment judgment module includes the second comparator, the first input end and second of second comparator
Input terminal puts into moment pulse signal input circuit with charger respectively and input moment threshold value pulse signal input circuit is connected,
Second comparison circuit will receive signal and be compared and export high level signal or low level signal is to logical AND non-device；Institute
State logical AND non-device and logical process is carried out to received signal, export trigger signal to control the opening and closing of breaker；
The circuit breaker control circuit, which further includes charger operation, allows signal input circuit；The charger operation allows signal
Input circuit output charger operation allows signal, is sent to logical AND non-device；The charger operation allows signal for height
Level signal or low level signal；
The method of work of the circuit breaker control circuit, including：
Step (1)：The charging current signal collected is sent in first comparator by charging current signal Acquisition Circuit, and first
Comparator by the charging current signal of reception compared with the current threshold that current threshold input circuit exports, if the former is more than or waits
In the latter, then high level signal is exported to logical AND non-device；Otherwise, low level signal is exported to logical AND non-device；
Step (2)：Charger input time-ofday signals are sent to second and compared by charger input moment pulse signal input circuit
In device, the second comparator exports the charger input time-ofday signals of reception with putting into moment threshold value pulse signal input circuit
Moment threshold value comparison is put into, if the former is greater than or equal to the latter, output high level signal to logical AND non-device；Otherwise, it is defeated
Go out low level signal to logical AND non-device；
Step (3)：Charger operation, which allows signal input circuit to run charger, allows signal to be sent to logical AND non-device；
Step (4)：Logical AND non-device carries out logical process to received signal, when logical AND non-device received signal is
High level signal, then export trigger signal to control the closure of breaker；Otherwise, trigger signal is exported to control beating for breaker
Open；Wherein, the order of step (1), step (2) and step (3) can be replaced arbitrarily.
A kind of 2. method of work of electric automobile battery charger running control circuit, it is characterised in that the electric automobile battery charger
Running control circuit includes circuit breaker control circuit, and the circuit breaker control circuit includes logical AND non-device, described to patrol
Collect and be respectively connected with the input terminal of non-device and charging current judgment module and charger input moment judgment module；
The charging current judgment module includes first comparator, the first input end of the first comparator and the second input terminal
It is connected respectively with charging current signal Acquisition Circuit and current threshold input circuit, the first comparison circuit will receive signal progress
Relatively and high level signal or low level signal are exported to logical AND non-device；
The charger input moment judgment module includes the second comparator, the first input end and second of second comparator
Input terminal puts into moment pulse signal input circuit with charger respectively and input moment threshold value pulse signal input circuit is connected,
Second comparison circuit will receive signal and be compared and export high level signal or low level signal is to logical AND non-device；Institute
State logical AND non-device and logical process is carried out to received signal, export trigger signal to control the opening and closing of breaker；
The circuit breaker control circuit, which further includes charger operation, allows signal input circuit；The charger operation allows signal
Input circuit output charger operation allows signal, is sent to logical AND non-device；The charger operation allows signal for height
Level signal or low level signal；
The method of work of the electric automobile battery charger running control circuit, including：
Step (1)：The charging current signal collected is sent in first comparator by charging current signal Acquisition Circuit, and first
Comparator by the charging current signal of reception compared with the current threshold that current threshold input circuit exports, if the former is more than or waits
In the latter, then high level signal is exported to logical AND non-device；Otherwise, low level signal is exported to logical AND non-device；
Step (2)：Charger input time-ofday signals are sent to second and compared by charger input moment pulse signal input circuit
In device, the second comparator exports the charger input time-ofday signals of reception with putting into moment threshold value pulse signal input circuit
Moment threshold value comparison is put into, if the former is greater than or equal to the latter, output high level signal to logical AND non-device；Otherwise, it is defeated
Go out low level signal to logical AND non-device；
Step (3)：Charger operation, which allows signal input circuit to run charger, allows signal to be sent to logical AND non-device；
Step (4)：Logical AND non-device carries out logical process to received signal, when logical AND non-device received signal is
High level signal, then export trigger signal to control the closure of breaker, charger work；Otherwise, trigger signal is exported to control
The opening of breaker processed, charger do not work；
Wherein, the order of step (1), step (2) and step (3) can be replaced arbitrarily.
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| CN107122553B (en) * | 2017-05-02 | 2021-11-05 | 国网山东省电力公司电力科学研究院 | Charger harmonic characteristic analysis simulation method considering random characteristic |
| CN112491010B (en) * | 2020-12-02 | 2023-03-28 | 上海力申科学仪器有限公司 | Oil pump motor real-time monitoring circuit and monitoring method thereof |
| CN113791341B (en) * | 2021-09-14 | 2024-04-09 | 云南电网有限责任公司电力科学研究院 | Component switching state discrimination system based on electric quantity and switching information |
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