CN111357166A - Charging and discharging interface electrical separation circuit and vehicle-mounted charger - Google Patents
Charging and discharging interface electrical separation circuit and vehicle-mounted charger Download PDFInfo
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- 238000007599 discharging Methods 0.000 title claims abstract description 66
- 238000000926 separation method Methods 0.000 title claims abstract description 34
- 101150049032 ACL1 gene Proteins 0.000 claims abstract description 12
- 101100448894 Arabidopsis thaliana GLR3.1 gene Proteins 0.000 claims abstract description 12
- 101100054598 Hordeum vulgare ACL1.2 gene Proteins 0.000 claims abstract description 12
- 101150023061 acpP gene Proteins 0.000 claims abstract description 12
- 101100001093 Arabidopsis thaliana AAE7 gene Proteins 0.000 claims abstract description 11
- 101100377798 Arabidopsis thaliana ABCD1 gene Proteins 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
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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
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
- H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
- B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses charge-discharge interface electrical separation circuit, including interface ACL1 that charges, interface ACN1 charges, interface ACL2 discharges, interface ACN2 and power source, still include digital signal processor, first relay K1, second relay K2 and switch control module, first relay K1, second relay K2 are single-pole double-throw relay, digital signal processor with switch control module's input is connected, first relay K1's input, second relay K2's input all are connected with switch control module's output, first relay K1's first contact pin with interface ACL1 that charges connects, first relay K1's second contact pin with interface ACL2 that discharges connects, first relay K1's common connecting end with power source interface connects. Through the means, the discharging interface is not conducted during charging, the charging interface is not conducted during discharging, separation and independence of charging and discharging are guaranteed, and charging and discharging safety is improved.
Description
Technical Field
The application relates to the technical field of electronic circuits, in particular to a charging and discharging interface electrical separation circuit and a vehicle-mounted charger.
Background
And (4) DSP: a digital signal processor.
Along with the popularization of new energy automobiles, the OBC (on-board battery charger) not only can realize the function of charging the power battery by a power grid, but also can convert the power battery into an alternating current function, and through the application of the bidirectional charger, the electric automobile is not only a vehicle, but also can become a mobile energy storage power station. The bidirectional charger product has a perfect function of supplying power to a vehicle (V2V), a vehicle-to-load (V2L), a vehicle-to-household (V2H) and a vehicle-to-power grid (V2G), but in most bidirectional charger products, charging and discharging share the same interface, and a potential safety hazard that a discharging interface is electrified exists in the charging process, as shown in fig. 1, when an OBC works in a charging mode, an AC output interface is electrified simultaneously, or when the OBC works in a discharging mode, an AC input interface is electrified simultaneously, and if the vehicle configuration is not reasonable enough, a certain potential safety hazard exists. For some complex applications, it is necessary to electrically separate the AC input interface and the output interface to improve the reliability of the application without changing the power conversion circuit inside the bi-directional OBC.
Disclosure of Invention
The embodiment of the application provides a charge-discharge interface electrical separation circuit and a vehicle-mounted charger, which can realize charge-discharge separation and improve the charge-discharge safety.
The first aspect of the embodiment of the application provides a charge and discharge interface electrical isolation circuit, including interface ACL1 that charges, interface ACN1 charges, interface ACL2 that discharges, interface ACN2 and power source, still include digital signal processor, first relay K1, second relay K2 and switch control module, wherein:
the first relay K1 and the second relay K2 are both single-pole double-throw relays, the digital signal processor is connected with an input end of the switch control module, an input end of the first relay K1 and an input end of the second relay K2 are both connected with an output end of the switch control module, a first contact pin of the first relay K1 is connected with the charging interface ACL1, a second contact pin of the first relay K1 is connected with the discharging interface ACL2, and a common connection end of the first relay K1 is connected with the power interface;
a first contact pin of the second relay K2 is connected with the charging interface ACN1, a second contact pin of the second relay K2 is connected with the discharging interface ACN2, and a common connection end of the second relay K2 is connected with the power supply interface;
when in a charging mode, the digital signal processor controls the switch control module to enable the first relay K1 and the second relay K2 to be in a normally closed state, and a first contact pin of the first relay K1 and a first contact pin of the second relay K2 are respectively connected with a common connecting end of the first relay K1 and a common connecting end of the second relay K2, so that charging is realized; when the relay is in a discharging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a working state, and the second contact pin of the first relay K1 and the second contact pin of the second relay K2 are respectively connected with the common connection end of the first relay K1 and the common connection end of the second relay K2, so that discharging is realized.
With reference to the first aspect of the present application, in a first possible implementation manner of the first aspect of the present application, the switch control module includes a transistor Q1, the input terminal of the first relay K1 includes a first coil pin and a second coil pin, and the input terminal of the second relay K2 includes a third coil pin and a fourth coil pin, where:
an emitting electrode of the triode Q1 is grounded, a base electrode of the triode Q1 is connected with an IO port of the digital signal processor, and a collector electrode of the triode Q1 is respectively connected with a first coil pin of the first relay K1 and a third coil pin of the second relay K2.
With reference to the first aspect of the present application or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect of the present application, the switch control module further includes a first diode D1, where:
the collector of the triode Q1 is connected with the anode of the first diode D1, and the cathode of the first diode D1 is connected with the fourth coil pin.
With reference to the second possible implementation manner of the first aspect of the present application, in a third possible implementation manner of the first aspect of the present application, the switch control module further includes a second diode D2, where:
the collector of the transistor Q1 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the second coil pin.
With reference to the third possible implementation manner of the first aspect of the present application, in a fourth possible implementation manner of the first aspect of the present application, the switch control module further includes a first resistor R1 and a second resistor R2, where:
one end of the first resistor R1 is connected with the fourth coil pin, the other end of the first resistor R1 is connected with the auxiliary power supply, one end of the second resistor R2 is connected with the cathode of the second diode D2, and the other end of the second resistor R2 is connected with the auxiliary power supply.
With reference to the fourth possible implementation manner of the first aspect of the present application, in a fifth possible implementation manner of the first aspect of the present application, the switch control module further includes a first capacitor C1, where:
one end of the first capacitor C1 is connected to the IO port of the digital signal processor, and the other end of the first capacitor C1 is grounded.
With reference to the fifth possible implementation manner of the first aspect of the present application, in a sixth possible implementation manner of the first aspect of the present application, the switch control module further includes a third resistor R3, where:
one end of the third resistor R3 is connected with the IO port of the digital signal processor, and the other end of the third resistor R3 is connected with the base electrode of the triode Q1.
With reference to the sixth possible implementation manner of the first aspect of the present application, in a seventh possible implementation manner of the first aspect of the present application, the switch control module further includes a fourth resistor R4, where:
one end of the fourth resistor R4 is connected to the IO port of the digital signal processor, and the other end of the fourth resistor R4 is connected to the first capacitor C1.
With reference to the seventh possible implementation manner of the first aspect of the present application, in an eighth possible implementation manner of the first aspect of the present application, the switch control module further includes a fifth resistor R5, where:
one end of the fifth resistor R5 is connected with the fourth resistor R4, and the other end of the fifth resistor R5 is connected with the base of the triode Q1.
A second aspect of the embodiments of the present application provides a vehicle-mounted charger, including any one of the charge-discharge interface electrical separation circuits provided in the first aspect.
By adopting the embodiment of the application, the charging and discharging interfaces are separated, the first relay K1 and the second relay K2 are both connected with the switch control module, the switch control module is connected with the Digital Signal Processor (DSP), and the first relay K1 and the second relay K2 are also respectively and correspondingly connected with the charging and discharging interfaces; when in a charging mode, the digital signal processor controls the switch control module to enable the first relay K1 and the second relay K2 to be in a normally closed state, a first contact pin (normally closed contact) of the first relay K1 is connected with the common connecting end of the first relay K1, and a first contact pin (normally closed contact) of the second relay K2 is connected with the common connecting end of the second relay K2, so that charging is realized; when in a discharging mode, the digital signal processor controls the switch control module to enable the first relay K1 and the second relay K2 to be in a working state, a second contact pin (normally open contact) of the first relay K1 is connected with the common connecting end of the first relay K1, and a second contact pin (normally open contact) of the second relay K2 is connected with the common connecting end of the second relay K2 to achieve discharging; through the means, the discharging interface is not conducted during charging, the charging interface is not conducted during discharging, separation and independence of charging and discharging are guaranteed, and charging and discharging safety is improved.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a schematic structural diagram of a vehicle-mounted charger in the prior art;
fig. 2 is a schematic structural diagram of an electrical separation circuit of a charge and discharge interface according to an embodiment of the present disclosure;
fig. 3 is a schematic connection diagram of an electrical separation circuit of a charge and discharge interface according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of another electrical separation circuit for a charge and discharge interface according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another electrical separation circuit for a charge and discharge interface according to an embodiment of the present disclosure.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following are detailed below.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Hereinafter, a brief description of the prior art of the present application will be provided to facilitate understanding by those skilled in the art.
Referring to fig. 1, when the OBC operates in the charging mode, the AC output interface is simultaneously charged, or when the OBC operates in the discharging mode, the AC input interface is simultaneously charged, and if the vehicle configuration is not reasonable enough, the AC input interface and the AC output interface are not separated, so that a certain potential safety hazard exists.
In order to solve the above technical problem, referring to fig. 2, fig. 2 is a schematic structural diagram of a charging and discharging interface electrical separation circuit provided in an embodiment of the present application, wherein an AC input interface and an AC output interface are separated, and when an OBC operates in a charging mode, the AC output interface is disconnected, or when the OBC operates in a discharging mode, the AC input interface is disconnected, so that application safety is improved, and convenience is provided for a vehicle wiring. Through the means, the discharging interface is not conducted during charging, the charging interface is not conducted during discharging, separation and independence of charging and discharging are guaranteed, and charging and discharging safety is improved.
Specifically, referring to fig. 3, fig. 3 is a connection schematic diagram of a charge and discharge interface electrical separation circuit provided in an embodiment of the present application. This charge-discharge interface electrical separation circuit, including interface ACL1 that charges, interface ACN1, interface ACL2 that discharges, interface ACN2 and power source interface discharge, still include digital signal processor DSP, first relay K1, second relay K2 and on-off control module, wherein:
the first relay K1 and the second relay K2 are both single-pole double-throw relays, the DSP is connected with the input end of the switch control module, the input end of the first relay K1 and the input end of the second relay K2 are both connected with the output end of the switch control module, a first contact pin 3 of the first relay K1 is connected with the charging interface ACL1, a second contact pin 5 of the first relay K1 is connected with the discharging interface ACL2, and a common connecting end 4 of the first relay K1 is connected with the power supply interface;
a first contact pin 3 of the second relay K2 is connected with the charging interface ACN1, a second contact pin 5 of the second relay K2 is connected with the discharging interface ACN2, and a common connection terminal 4 of the second relay K2 is connected with the power supply interface;
when in a charging mode, the digital signal processor DSP controls the switch control module, so that the first relay K1 and the second relay K2 are both in a normally closed state, and the first contact pin 3 of the first relay K1 and the first contact pin 3 of the second relay K2 are respectively connected with the common connection terminal 4 of the first relay K1 and the common connection terminal 4 of the second relay K2, so as to realize charging; when in a discharging mode, the digital signal processor DSP controls the switch control module, so that the first relay K1 and the second relay K2 are both in a working state, and the second contact pin 5 of the first relay K1 and the second contact pin 5 of the second relay K2 are respectively connected with the common connection end 4 of the first relay K1 and the common connection end 4 of the second relay K2, so as to realize discharging.
By adopting the embodiment, the charging and discharging interfaces are separated, the first relay, the second relay and the switch control module are connected, the switch control module is connected with the DSP, and the first relay and the second relay are also respectively and correspondingly connected with the charging and discharging interfaces; a single-pole double-throw relay is adopted to carry out different controls on the normally closed contact and the normally open contact; when in a charging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a normally closed state, and a first contact pin (normally closed contact) of the first relay K1 and a first contact pin (normally closed contact) of the second relay K2 are respectively connected with a common connection end of the first relay K1 and a common connection end of the second relay K2, so that charging is realized; when in a discharging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a working state, and a second contact pin (normally open contact) of the first relay K1 and a second contact pin (normally open contact) of the second relay K2 are respectively connected with a common connection end of the first relay K1 and a common connection end of the second relay K2, so that discharging is realized; through the means, the discharging interface is not conducted during charging, the charging interface is not conducted during discharging, separation and independence of charging and discharging are guaranteed, and charging and discharging safety is improved.
As a possible implementation manner, referring to fig. 4, fig. 4 is a schematic structural diagram of a charge and discharge interface electrical separation circuit provided in an embodiment of the present application, where the charge and discharge interface electrical separation circuit includes a charge interface ACL1, a charge interface ACN1, a discharge interface ACL2, a discharge interface ACN2, a power supply interface, and further includes a DSP, a first relay K1, a second relay K2, and a switch control module, the switch control module includes a transistor Q1, an input end of the first relay K1 includes a first coil pin 1 and a second coil pin 2, an input end of the second relay K2 includes a third coil pin 1 and a fourth coil pin 2, where:
the first relay K1 and the second relay K2 are both single-pole double-throw relays, the DSP is connected with the input end of the switch control module, specifically, the base electrode of the triode Q1 is connected with the IO port of the DSP, and the emitter electrode of the triode Q1 is grounded;
the collector of the triode Q1 is respectively connected with the first coil pin 1 and the third coil pin 1; the second coil pin 2 and the fourth coil pin 2 are both connected to a P12V + voltage;
a first contact pin 3 of the first relay K1 is connected with the charging interface ACL1, a second contact pin 5 of the first relay K1 is connected with the discharging interface ACL2, and a common connection terminal 4 of the first relay K1 is connected with the power supply interface;
the first contact pin 3 of the second relay K2 is connected with the charging interface ACN1, the second contact pin 5 of the second relay K2 is connected with the discharging interface ACN2, and the common connection terminal 4 of the second relay K2 is connected with the power interface.
Adopt this embodiment, increased relay K1, K2 at two-way OBC input, the interface L line that charges links to each other with relay K1 normally closed contact 3, and interface N line that charges links to each other with K2 normally closed contact 3, and interface L line that discharges links to each other with relay K1 normally open contact 5, and interface N line that discharges links to each other with relay K2 normally open contact 5. When the OBC works in a charging mode, the triode Q1 is driven to be controlled by the DSP, the DSP sends a low level signal, the triode Q1 is cut, the coils of the relays K1 and K2 have no current and are in a normally closed state, and the discharging interface is electrically disconnected.
When in a charging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a normally closed state, and a first contact pin (normally closed contact) of the first relay K1 and a first contact pin (normally closed contact) of the second relay K2 are respectively connected with a common connection end of the first relay K1 and a common connection end of the second relay K2, so that charging is realized; when in a discharging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a working state, and a second contact pin (normally open contact) of the first relay K1 and a second contact pin (normally open contact) of the second relay K2 are respectively connected with a common connection end of the first relay K1 and a common connection end of the second relay K2, so that discharging is realized; through the means, the discharging interface is not conducted during charging, the charging interface is not conducted during discharging, separation and independence of charging and discharging are guaranteed, and charging and discharging safety is improved.
Further, referring to fig. 5, fig. 5 is a schematic structural diagram of a charge-discharge interface electrical separation circuit according to an embodiment of the present application. The electric separating circuit of charge and discharge interface of this embodiment, including interface ACL1 that charges, interface ACN1 that charges, interface ACL2 that discharges, interface ACN2 and power source, still include DSP, first relay K1, second relay K2 and switch control module, switch control module includes triode Q1, wherein:
the first relay K1 and the second relay K2 are both single-pole double-throw relays, the base electrode of the triode Q1 is connected with the IO port of the DSP, and the emitting electrode of the triode Q1 is grounded; a first contact pin 3 of the first relay K1 is connected with the charging interface ACL1, a second contact pin 5 of the first relay K1 is connected with the discharging interface ACL2, and a common connection terminal 4 of the first relay K1 is connected with the power supply interface;
a first contact pin 3 of the second relay K2 is connected with the charging interface ACN1, a second contact pin 5 of the second relay K2 is connected with the discharging interface ACN2, and a common connection terminal 4 of the second relay K2 is connected with the power supply interface;
preferably, the switch control module further comprises a first diode D1, a second diode D2 and a plurality of resistors;
the input end of the first relay K1 comprises a first coil pin and a second coil pin, and the input end of the second relay K2 comprises a third coil pin and a fourth coil pin;
specifically, the collector of the triode Q1 is connected to the first coil pin and the third coil pin respectively;
the collector of the triode Q1 is also connected with the anode of the first diode D1, and the cathode of the first diode D1 is connected with the fourth coil pin;
the collector of the transistor Q1 is also connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the second coil pin.
As a possible implementation, the switch control module further includes a first resistor R1 and a second resistor R2, where:
one end of the first resistor R1 is connected with the fourth coil pin, the other end of the first resistor R1 is connected with an auxiliary power supply, one end of the second resistor R2 is connected with the cathode of the second diode D2, and the other end of the second resistor R2 is connected with the auxiliary power supply.
As a possible implementation, the switch control module further includes a first capacitor C1, wherein:
one end of the first capacitor C1 is connected to the IO port of the DSP, the other end of the first capacitor C1 is grounded, and the first capacitor C1 plays a role of filtering.
As a possible implementation, the switch control module further includes a third resistor R3, where:
one end of the third resistor R3 is connected with the IO port of the DSP, the other end of the third resistor R3 is connected with the base electrode of the triode Q1, and the third resistor R3 plays a role in voltage division.
As a possible implementation, the switch control module further includes a fourth resistor R4, which functions as a shunt, where:
one end of the fourth resistor R4 is connected to the IO port of the DSP, and the other end of the fourth resistor R4 is connected to one end of the first capacitor C1.
As a possible implementation, the switch control module further includes a fifth resistor R5, where:
one end of the fifth resistor R5 is connected with the fourth resistor R4, and the other end of the fifth resistor R5 is connected with the base of the triode.
Above-mentioned through having increased relay K1, K2 at two-way OBC input, the interface L line that charges links to each other with K1 relay normally closed contact 3, and interface N line that charges links to each other with K2 normally closed contact 3, and interface L line that discharges links to each other with K1 relay normally open contact 5, and interface N line that discharges links to each other with K2 relay normally open contact 5. When the OBC works in a charging mode, the drive of the triode Q1 is controlled by the DSP, the DSP sends out a low level signal, the triode Q1 is cut off, the K1 and K2 relay coils have no current and are in a normally closed state, and the normally closed state is electrically disconnected with a discharging interface.
When the OBC works in a discharging mode, the DSP sends a high level signal, the triode Q1 is conducted, a current path is provided for coils of the relays K1 and K2, the relays K1 and K2 are switched to normally open contacts from normally closed contacts, and the relays are electrically disconnected from the charging interface, namely the charging interface is electrically connected and separated from the discharging interface. When in a charging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a normally closed state, and a first contact pin (normally closed contact) of the first relay K1 and a first contact pin (normally closed contact) of the second relay K2 are respectively connected with a common connection end of the first relay K1 and a common connection end of the second relay K2, so that charging is realized; when in a discharging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a working state, and a second contact pin (normally open contact) of the first relay K1 and a second contact pin (normally open contact) of the second relay K2 are respectively connected with a common connection end of the first relay K1 and a common connection end of the second relay K2, so that discharging is realized; through the means, the discharging interface is not conducted during charging, the charging interface is not conducted during discharging, separation and independence of charging and discharging are guaranteed, and charging and discharging safety is improved.
As a possible implementation manner, the application further provides a vehicle-mounted charger, which comprises the charging and discharging interface electrical separation circuit.
It should be noted that, for the sake of simplicity, the embodiments of the present application are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The utility model provides a charge and discharge interface electrical separation circuit, includes interface ACL1 that charges, interface ACN1 that charges, interface ACL2 that discharges, interface ACN2 and power source interface, its characterized in that still includes digital signal processor, first relay K1, second relay K2 and switch control module, wherein:
the first relay K1 and the second relay K2 are both single-pole double-throw relays, the digital signal processor is connected with the input end of the switch control module, and the input end of the first relay K1 and the input end of the second relay K2 are both connected with the output end of the switch control module;
a first contact pin of the first relay K1 is connected with the charging interface ACL1, a second contact pin of the first relay K1 is connected with the discharging interface ACL2, and a common connection end of the first relay K1 is connected with the power supply interface;
a first contact pin of the second relay K2 is connected with the charging interface ACN1, a second contact pin of the second relay K2 is connected with the discharging interface ACN2, and a common connection end of the second relay K2 is connected with the power supply interface;
when in a charging mode, the digital signal processor controls the switch control module to enable the first relay K1 and the second relay K2 to be in a normally closed state, and a first contact pin of the first relay K1 and a first contact pin of the second relay K2 are respectively connected with a common connecting end of the first relay K1 and a common connecting end of the second relay K2, so that charging is realized; when the relay is in a discharging mode, the digital signal processor controls the switch control module, so that the first relay K1 and the second relay K2 are both in a working state, and the second contact pin of the first relay K1 and the second contact pin of the second relay K2 are respectively connected with the common connection end of the first relay K1 and the common connection end of the second relay K2, so that discharging is realized.
2. The charge-discharge interface electrical separation circuit of claim 1, wherein the switch control module comprises a transistor Q1, the input of the first relay K1 comprises a first coil pin and a second coil pin, and the input of the second relay K2 comprises a third coil pin and a fourth coil pin, wherein:
an emitting electrode of the triode Q1 is grounded, a base electrode of the triode Q1 is connected with an IO port of the digital signal processor, and a collector electrode of the triode Q1 is respectively connected with a first coil pin of the first relay K1 and a third coil pin of the second relay K2.
3. The charge-discharge interface electrical separation circuit of claim 2, wherein the switch control module further comprises a first diode D1, wherein:
the collector of the triode Q1 is connected with the anode of the first diode D1, and the cathode of the first diode D1 is connected with the fourth coil pin.
4. The charge-discharge interface electrical separation circuit of claim 3, wherein the switch control module further comprises a second diode D2, wherein:
the collector of the transistor Q1 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the second coil pin.
5. The charge-discharge interface electrical separation circuit of claim 4, wherein the switch control module further comprises a first resistor R1, a second resistor R2, wherein:
one end of the first resistor R1 is connected with the fourth coil pin, the other end of the first resistor R1 is connected with an auxiliary power supply, one end of the second resistor R2 is connected with the cathode of the second diode D2, and the other end of the second resistor R2 is connected with the auxiliary power supply.
6. The charge-discharge interface electrical separation circuit of claim 5, wherein the switch control module further comprises a first capacitor C1, wherein:
one end of the first capacitor C1 is connected to the IO port of the digital signal processor, and the other end of the first capacitor C1 is grounded.
7. The charge-discharge interface electrical separation circuit of claim 6, wherein the switch control module further comprises a third resistor R3, wherein:
one end of the third resistor R3 is connected with the IO port of the digital signal processor, and the other end of the third resistor R3 is connected with the base electrode of the triode Q1.
8. The charge-discharge interface electrical separation circuit of claim 7, wherein the switch control module further comprises a fourth resistor R4, wherein:
one end of the fourth resistor R4 is connected to the IO port of the digital signal processor, and the other end of the fourth resistor R4 is connected to the first capacitor C1.
9. The charge-discharge interface electrical separation circuit of claim 8, wherein the switch control module further comprises a fifth resistor R5, wherein:
one end of the fifth resistor R5 is connected with the fourth resistor R4, and the other end of the fifth resistor R5 is connected with the base of the triode Q1.
10. A vehicle-mounted charger characterized by comprising the charge-discharge interface electrical separation circuit according to any one of claims 1 to 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/097345 WO2021012192A1 (en) | 2019-07-23 | 2019-07-23 | Electric separation circuit of charge/discharge interface, and vehicle-mounted charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111357166A true CN111357166A (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980005740.5A Pending CN111357166A (en) | 2019-07-23 | 2019-07-23 | Charging and discharging interface electrical separation circuit and vehicle-mounted charger |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111357166A (en) |
| WO (1) | WO2021012192A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103545932A (en) * | 2013-10-30 | 2014-01-29 | 广东易事特电源股份有限公司 | PDU capable of being controlled remotely |
| CN204304473U (en) * | 2014-09-22 | 2015-04-29 | 神讯电脑(昆山)有限公司 | Portable power source discharge and recharge changes tool automatically |
| CN207994644U (en) * | 2017-12-12 | 2018-10-19 | 董熙磊 | A kind of charger for electric bicycle no-voltage alarm |
| CN109638932A (en) * | 2019-02-28 | 2019-04-16 | 郝蕾 | A kind of charge and discharge double interlock control circuit of electric car |
| CN210554260U (en) * | 2019-07-23 | 2020-05-19 | 深圳欣锐科技股份有限公司 | Charging and discharging interface electrical separation circuit and vehicle-mounted charger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617616B (en) * | 2015-01-19 | 2018-01-05 | 深圳市中科源电子有限公司 | A kind of portable power source test charge-discharge control circuit and portable power source test device |
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2019
- 2019-07-23 CN CN201980005740.5A patent/CN111357166A/en active Pending
- 2019-07-23 WO PCT/CN2019/097345 patent/WO2021012192A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545932A (en) * | 2013-10-30 | 2014-01-29 | 广东易事特电源股份有限公司 | PDU capable of being controlled remotely |
| CN204304473U (en) * | 2014-09-22 | 2015-04-29 | 神讯电脑(昆山)有限公司 | Portable power source discharge and recharge changes tool automatically |
| CN207994644U (en) * | 2017-12-12 | 2018-10-19 | 董熙磊 | A kind of charger for electric bicycle no-voltage alarm |
| CN109638932A (en) * | 2019-02-28 | 2019-04-16 | 郝蕾 | A kind of charge and discharge double interlock control circuit of electric car |
| CN210554260U (en) * | 2019-07-23 | 2020-05-19 | 深圳欣锐科技股份有限公司 | Charging and discharging interface electrical separation circuit and vehicle-mounted charger |
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| WO2021012192A1 (en) | 2021-01-28 |
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Application publication date: 20200630 |