CN113492702A - Bidirectional vehicle-mounted charger, vehicle-mounted power supply system, charging control method and automobile - Google Patents
Bidirectional vehicle-mounted charger, vehicle-mounted power supply system, charging control method and automobile Download PDFInfo
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- CN113492702A CN113492702A CN202010192024.7A CN202010192024A CN113492702A CN 113492702 A CN113492702 A CN 113492702A CN 202010192024 A CN202010192024 A CN 202010192024A CN 113492702 A CN113492702 A CN 113492702A
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007599 discharging Methods 0.000 claims description 26
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000002618 waking effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000005070 sampling Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 235000021168 barbecue Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
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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
-
- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- 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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- 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
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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
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a bidirectional vehicle-mounted charger, a vehicle-mounted power supply system, a charging control method and an automobile. Therefore, by adopting the technical scheme of the invention, when the vehicle is in a running state, the electric vehicle can still supply power to the external load, and the experience of a user is improved.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a bidirectional vehicle-mounted charger, a vehicle-mounted power system, a charging control method and an automobile.
Background
With the rapid development of new energy automobiles, the functions of new energy automobiles are also more and more abundant, for example, the function of providing electric energy output to the outside by electric automobiles is mainly divided into that electric vehicles supply power to loads (V2L), such as alternating current loads of induction cookers, barbecue boxes and the like; electric vehicles provide electric power to other electric vehicles (V2V); electric vehicles provide electrical energy to the external Grid (V2G).
At present, when an electric vehicle is responsible for providing electric energy to the outside, a Bidirectional On-Board Charger (bocc) is used for realizing charging and inverting functions, a discharging gun is connected to provide alternating current to the outside or the Bidirectional On-Board Charger is connected to a slow charging port of the bocc through an external charging pile, and an inverting module inside the bocc converts 220V alternating current into high-voltage direct current to charge a power battery. The scheme of providing the alternating current for the external load by connecting the discharging gun is only suitable for the situation that the vehicle is in a standing working condition, and when the automobile is in a running state, the discharging gun cannot be used for providing the alternating current for the external load. Resulting in a lower experience for the user.
Disclosure of Invention
The invention aims to solve the problem that an electric automobile cannot supply power to an external load when the automobile in the prior art is in a running state. Therefore, when the vehicle is in a running state, the electric vehicle can still supply power to an external load, and the experience of a user is improved.
In order to solve the above problems, an embodiment of the present invention discloses a bidirectional vehicle-mounted charger, which includes a bidirectional vehicle-mounted charger body, and further includes: a wire divider;
the deconcentrator comprises a first relay and a second relay, an alternating current interface of the bidirectional vehicle-mounted charger body is respectively connected with the first relay and the second relay, and a direct current interface of the bidirectional vehicle-mounted charger body is connected with the power battery pack;
the first relay is used for being connected with the first charging interface so as to be communicated with the power battery pack when the vehicle is in a standing working condition to supply power to an external load through the charging gun;
the second relay is used for being connected with a second charging interface so as to supply power to the external load when the vehicle is in the standing working condition or the running working condition.
In some embodiments of the invention, the splitter further comprises: and the first relay and the second relay are fixed on the insulating pad.
In some embodiments of the invention, the first relay and the first charging interface, the second relay and the second charging interface are connected by a high-voltage ac connector, and the dc interface of the bidirectional vehicle-mounted charger body and the power battery pack are connected by a high-voltage dc connector.
In some embodiments of the invention, the high-voltage ac connector and the ac live wire, the zero wire and the ground wire led out from the bidirectional vehicle-mounted charger body are respectively connected with the first charging interface and the second charging interface.
Further, an embodiment of the present invention discloses a vehicle-mounted power supply system, including:
the power battery pack is used for providing electric energy;
the bidirectional vehicle-mounted charger comprises a power battery pack, a bidirectional battery charger and a power battery pack, wherein the bidirectional battery charger is provided with a direct current interface;
the bidirectional vehicle-mounted charger comprises a first charging interface and a second charging interface, wherein the first charging interface is used for being connected with a charging gun and a first relay in the bidirectional vehicle-mounted charger respectively and is used for supplying power to an external load when a vehicle is in a standing working condition;
and the second charging interface is connected with a second relay in the bidirectional vehicle-mounted charger and used for supplying power to the external load when the vehicle is in the standing working condition or the running working condition.
In some embodiments of the present invention, the in-vehicle power supply system further includes: and the first relay and the second relay are fixed on the insulating pad.
In some embodiments of the present invention, the first relay and the first charging interface, the second relay and the second charging interface are connected by a high voltage ac connector, and the dc interface of the bidirectional vehicle-mounted charger and the power battery pack are connected by a high voltage dc connector.
In some embodiments of the invention, the second charging interface is a three-eye socket.
In some embodiments of the present invention, the in-vehicle power supply system further includes: and the control terminal is connected with the bidirectional vehicle-mounted charger and is used for controlling the bidirectional vehicle-mounted charger to supply power to the external load.
Further, an embodiment of the present invention discloses a charging control method for a bidirectional vehicle-mounted charger, based on any one of the above vehicle-mounted power systems, including:
after a discharging instruction is received, waking up the bidirectional vehicle-mounted charger and monitoring the state of the bidirectional vehicle-mounted charger, and executing the following steps when the bidirectional vehicle-mounted charger is in a normal working state:
identifying the current working condition of the vehicle;
if the vehicle is in a standing working condition, controlling a first relay and/or a second relay in the bidirectional vehicle-mounted charger to be conducted so as to supply power to an external load corresponding to the discharging instruction through a first charging interface and/or a second charging interface;
and if the vehicle is in a running working condition, controlling a second relay of the bidirectional vehicle-mounted charger to be conducted so as to supply power to an external load corresponding to the discharging instruction through a second charging interface.
Further, an embodiment of the present invention discloses an automobile, including: the vehicular power system according to any one of the above.
The embodiment of the invention provides a bidirectional vehicle-mounted charger, a vehicle-mounted power supply system, a charging control method and an automobile. Therefore, by adopting the technical scheme of the invention, when the vehicle is in a running state, the electric vehicle can still supply power to the external load, and the experience of a user is improved.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1(a) is a schematic structural diagram of a bidirectional vehicle-mounted charger disclosed in an embodiment of the present invention;
fig. 1(b) is a schematic diagram of a specific implementation structure of a bidirectional vehicle-mounted charger disclosed in an embodiment of the present invention;
fig. 1(c) is a schematic diagram of a specific implementation structure of another bidirectional vehicle-mounted charger disclosed in the embodiment of the present invention;
fig. 2 is a schematic structural diagram of a vehicle-mounted power supply system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a charging control method for a bidirectional vehicle-mounted charger according to an embodiment of the present invention.
Reference numerals:
1: a bidirectional vehicle-mounted charger;
10: a bidirectional vehicle-mounted charger body;
11: a wire divider; 110: a first relay; 111: a second relay; 20: a power battery pack;
112: a first charging interface;
113: a second charging interface;
114: an insulating pad.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1(a), fig. 1(b) and fig. 1(c), fig. 1(a) is a schematic structural diagram of a bidirectional vehicle-mounted charger disclosed in an embodiment of the present invention, fig. 1(b) is a schematic structural diagram of a specific implementation of the bidirectional vehicle-mounted charger disclosed in the embodiment of the present invention, and fig. 1(c) is a schematic structural diagram of a specific implementation of another bidirectional vehicle-mounted charger disclosed in the embodiment of the present invention; the bidirectional vehicle-mounted charger 1 comprises: the bidirectional vehicle-mounted charger body 10 further includes: deconcentrator 11, deconcentrator 11 includes: the alternating current interface of the bidirectional vehicle-mounted charger body 10 is respectively connected with the first relay 11 and the second relay 111, and the direct current interface of the bidirectional vehicle-mounted charger body 10 is connected with the power battery pack 20.
The first relay 110 is used to connect with the first charging interface 112 to connect with the power battery pack 20 to supply power to an external load through the charging gun when the vehicle is in a stationary condition.
The second relay 111 is used for being connected with the second charging interface 113 to supply power to an external load when the vehicle is in a standing condition or a driving condition.
Specifically, the deconcentrator 11 provided by the embodiment of the present invention may be connected to the bidirectional vehicle-mounted charger body 10 as an independent component, or may form an integral structure with the bidirectional vehicle-mounted charger body 10 to form a novel bidirectional vehicle-mounted charger. As for the structure in which the deconcentrator 11 is separated from the bidirectional vehicle-mounted charger body 10, as shown in fig. 1(b), in some embodiments of the present invention, the first relay 110 and the first charging interface 112, the second relay 111 and the second charging interface 113 are connected by a high-voltage ac connector, and the dc interface of the bidirectional vehicle-mounted charger body 10 and the power battery pack are connected by a high-voltage dc connector.
The shell of the deconcentrator 11 is provided with three high-voltage alternating-current connectors and a low-voltage connector, wherein one of the three high-voltage alternating-current connectors is connected with an alternating-current live wire harness of a bidirectional vehicle-mounted charger body, the alternating-current live wire harness is divided into two branches through a first relay 110 and a second relay 111 inside the deconcentrator 11, the branches are called a first live wire and a second live wire in the embodiment of the invention, one high-voltage alternating-current connector is connected with a first charging interface 112 (a slow charging interface), alternating current is discharged through the first charging interface 112 and a discharging gun, the last high-voltage alternating-current connector is connected with a second charging interface 113, and when a vehicle runs, the discharging function is realized through the second charging interface 113.
In some embodiments of the invention, the splitter 11 further comprises: the insulating pad 114, the first relay 110 and the second relay 111 are fixed to the insulating pad 114. The distributor 11 has an insulating pad 114 inside to fix the first relay 110 and the second relay 111, so as to prevent the leakage current from the vehicle to affect the safety of the vehicle. The zero line inside the deconcentrator 11 is also divided into two branches, the ground wire is connected to the shell of the deconcentrator 11, the first relay 110 and the second relay 111 are provided with driving wires and connected with the bidirectional vehicle-mounted charger body 10, so that the bidirectional vehicle-mounted charger body 10 drives the first relay 110 and the second relay 111. In addition, the first relay 110 and the second relay 111 are provided with voltage sampling lines, the bidirectional vehicle-mounted charger body 10 is used for sampling voltage values, and the deconcentrator 11 is required to be interlocked with the bidirectional vehicle-mounted charger body 10 connected in series to detect high voltage for detecting whether the high voltage alternating current connector is connected perfectly.
As for the structure in which the deconcentrator 11 and the bidirectional vehicle-mounted charger body 10 are integrated, as shown in fig. 1(c), the housing of the bidirectional vehicle-mounted charger body 10 has three high-voltage ac connectors, one low-voltage connector, one first charging interface 112 of the three high-voltage ac connectors is connected, and the docking bidirectional vehicle-mounted charger body 10 connects the ac live wire harness of the bidirectional vehicle-mounted charger body 10 with the first charging interface 112, discharges the ac power through the first charging interface 112 and the discharging gun, the other high-voltage ac connector is connected with the second charging interface 113, and the docking bidirectional vehicle-mounted charger body 10 connects the ac live wire harness of the bidirectional vehicle-mounted charger body 10 with the second charging interface 113, discharges the ac power to the outside when the vehicle runs through the second charging interface 113, and the last high-voltage dc connector is connected with the power battery pack 20. The first relay 110 and the second relay 111 are arranged inside the bidirectional vehicle-mounted charger body 10, an alternating current live wire harness inside the bidirectional vehicle-mounted charger body 10 is divided into two branches through the first relay 110 and the second relay 111, the two branches are called a first live wire and a second live wire in the embodiment of the invention, a zero line is also divided into two branches through a connecting point, a ground wire and a zero line are shared, the ground wire is connected to a shell of the bidirectional vehicle-mounted charger body 10, the first relay 110 and the second relay 111 are provided with driving wires, and the first relay 110 and the second relay 111 are driven by the bidirectional vehicle-mounted charger body 10. In addition, the first relay 110 and the second relay 111 are provided with voltage sampling lines, the bidirectional vehicle-mounted charger body 10 samples a voltage value, and all three high-voltage alternating-current connectors of the bidirectional vehicle-mounted charger body 10 need to detect high-voltage interlocking for detecting whether the high-voltage alternating-current connectors are connected perfectly.
In some embodiments of the present invention, for the structure in which the deconcentrator 11 is integrated with the bidirectional vehicle-mounted charger body 10, the first relay 110 and the first charging interface 112, and the second relay 111 and the second charging interface 113 are connected by high-voltage ac connectors, and the dc interface of the bidirectional vehicle-mounted charger body 10 and the power battery pack are connected by high-voltage dc connectors.
It should be noted that a DCDC module may also be integrated inside the bidirectional vehicle-mounted charger in the embodiment of the present invention.
A vehicle-mounted power supply system disclosed in an embodiment of the present invention is described below with reference to fig. 2, where fig. 2 is a schematic structural diagram of the vehicle-mounted power supply system disclosed in the embodiment of the present invention, and the vehicle-mounted power supply system includes: the power battery pack 20 is a bidirectional vehicle-mounted charger 1 mentioned in the above fig. 1(a), 1(b) and 1(c), and the direct current interface of the bidirectional vehicle-mounted charger 1 is connected with the power battery pack 20.
The vehicle charging system comprises a first charging interface 112 and a second charging interface 113, wherein the first charging interface 112 is used for being connected with a charging gun and a first relay 110 in a bidirectional vehicle-mounted charger respectively and used for supplying power to an external load when the vehicle is in a standing working condition.
The second charging interface 113 is connected with a second relay 111 in the bidirectional vehicle-mounted charger and used for supplying power to an external load when the vehicle is in a standing working condition or a running working condition.
In some embodiments of the invention, the in-vehicle power supply system further comprises: an insulating pad (not shown), to which the first relay 110 and the second relay 111 are fixed.
In some embodiments of the present invention, the first relay 110 and the first charging interface 112, the second relay 111 and the second charging interface 113 are connected by high voltage ac connectors, and the dc interface of the bidirectional vehicle-mounted charger body 10 and the power battery pack are connected by high voltage dc connectors.
In some embodiments of the present invention, the second charging interface 113 is a three-eye socket.
In some embodiments of the invention, the in-vehicle power supply system further comprises: the control terminal may be a mobile phone, a tablet, or the like, and is connected to the bidirectional vehicle-mounted charger 1 (not shown in the figure) and configured to control the bidirectional vehicle-mounted charger 1 to supply power to an external load.
A charging control method for a bidirectional vehicle-mounted charger disclosed by the embodiment of the invention is described below with reference to fig. 3, fig. 3 is a schematic flow chart of a charging control method for a bidirectional vehicle-mounted charger according to an embodiment of the present invention, based on the above-mentioned vehicle-mounted power system, where the first relay 110 is in a normally closed state, the second relay 111 is in a normally open state, when the vehicle is in a stop state, the second charging interface 113 and the first charging interface 112 are allowed to be used for discharging at the same time, when the vehicle is in a running state, the second charging interface 113 is allowed to be used for discharging, and the first charging interface 112 is not allowed to be used for discharging, in addition, the bidirectional vehicle-mounted charger is also provided with a discharging power protection threshold (provided with a current-limiting protection device such as a fuse and the like), so that the phenomenon that the bidirectional vehicle-mounted charger is burnt out due to overlarge inverter output power is avoided, and the charging control method for the bidirectional vehicle-mounted charger comprises the following steps:
s30: and after receiving the discharging instruction, waking up the bidirectional vehicle-mounted charger and monitoring the state of the bidirectional vehicle-mounted charger, and entering S31 when the bidirectional vehicle-mounted charger is in a normal working state.
The discharging instruction can be a discharging mode request, a discharging charge state request, a discharging starting request and the like sent by a user through a control terminal or a vehicle-mounted display screen with a man-machine interaction function of the electric vehicle, and the user can set a power supply mode (V2L, V2V or V2G) through the control terminal and the vehicle-mounted display screen. The control terminal and the vehicle-mounted display screen CAN be connected with a power management system of the whole vehicle through a gateway controller of the vehicle, and the specific communication protocol CAN be a CAN bus.
S31: and identifying the current working condition of the vehicle. If the vehicle is in the standing working condition, the process goes to S32, and if the vehicle is in the running working condition, the process goes to S33.
The working conditions of the vehicle comprise: a stationary condition and a driving condition.
S32: and controlling the conduction of a first relay and/or a second relay in the bidirectional vehicle-mounted charger so as to supply power to an external load corresponding to the discharging instruction through the first charging interface and/or the second charging interface.
Specifically, before the power management system controls the first relay and/or the second relay to be switched on so as to supply power to the external load corresponding to the discharging instruction through the first charging interface and/or the second charging interface, fault detection may be performed on the bidirectional vehicle-mounted charger, for example, whether the bidirectional vehicle-mounted charger is in an awakening state, whether the working current of the bidirectional vehicle-mounted charger is abnormal, or the like. After the bidirectional vehicle-mounted charger detects no fault, the bidirectional vehicle-mounted charger enters a discharge state preparation, the power management system sends a discharge current value to the bidirectional vehicle-mounted charger, a discharge mode (such as discharging to an external load, discharging to other electric vehicles or supplying electric energy to a power grid) is realized, after the bidirectional vehicle-mounted charger receives the information sent by the power management system, the circuit is started slowly, the first relay and/or the second relay are/is closed, whether the first relay and/or the second relay is adhered or fails to be attracted is detected, when the first relay and/or the second relay has no fault, the first relay and the second relay are controlled to be in the attraction state at the same time, the load is supplied with power through the first charging interface and the second charging interface, or any one of the first relay or the second relay is controlled to be in the attraction state, and the power is supplied to the load through the first charging interface or the second charging interface.
S33: and controlling a second relay of the bidirectional vehicle-mounted charger to be switched on so as to supply power to an external load corresponding to the discharging instruction through a second charging interface.
In addition, the embodiment of the invention also discloses an automobile which comprises the vehicle-mounted power supply system.
The bidirectional vehicle-mounted charger, the vehicle-mounted power system, the charging control method and the automobile provided by the embodiment of the invention have the following beneficial effects:
the bidirectional vehicle-mounted charger comprises a bidirectional vehicle-mounted charger body and a deconcentrator, wherein a first relay and a second relay are arranged in the deconcentrator, the first relay and the second relay are both connected to an alternating current interface of the bidirectional vehicle-mounted charger body, a direct current interface of the bidirectional vehicle-mounted charger body is connected with the power battery pack, when the vehicle is in a standing working condition and the first relay is switched on, the power battery pack supplies power for an external load through a first charging interface and a charging gun, and when the vehicle is in a standing working condition or a running working condition and the second relay is switched on, the power battery supplies power for the external load through a second charging interface. Therefore, by adopting the technical scheme of the invention, when the vehicle is in a running state, the electric vehicle can still supply power to the external load, and the experience of a user is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. The utility model provides a two-way on-vehicle machine that charges, includes two-way on-vehicle machine body that charges, its characterized in that still includes: a wire divider;
the deconcentrator comprises a first relay and a second relay, an alternating current interface of the bidirectional vehicle-mounted charger body is respectively connected with the first relay and the second relay, and a direct current interface of the bidirectional vehicle-mounted charger body is connected with the power battery pack;
the first relay is used for being connected with the first charging interface so as to be communicated with the power battery pack when the vehicle is in a standing working condition to supply power to an external load through the charging gun;
the second relay is used for being connected with a second charging interface so as to supply power to the external load when the vehicle is in the standing working condition or the running working condition.
2. The bidirectional vehicle-mounted charger according to claim 1, wherein said deconcentrator further comprises: and the first relay and the second relay are fixed on the insulating pad.
3. The bidirectional vehicle-mounted charger according to claim 1 or 2, characterized in that the first relay is connected to the first charging interface, the second relay is connected to the second charging interface by a high-voltage alternating-current connector, and the direct-current interface of the bidirectional vehicle-mounted charger body is connected to the power battery pack by a high-voltage direct-current connector.
4. The bidirectional vehicle-mounted charger according to claim 3, wherein the high-voltage AC connector and the AC live wire, the AC zero wire and the AC ground wire which lead out from the bidirectional vehicle-mounted charger body are respectively connected with the first charging interface and the second charging interface.
5. An onboard power supply system characterized by comprising:
the power battery pack is used for providing electric energy;
the bidirectional vehicle-mounted charger according to any one of claims 1 to 4, wherein a direct current interface of the bidirectional vehicle-mounted charger is connected with the power battery pack;
the bidirectional vehicle-mounted charger comprises a first charging interface and a second charging interface, wherein the first charging interface is used for being connected with a charging gun and a first relay in the bidirectional vehicle-mounted charger respectively and is used for supplying power to an external load when a vehicle is in a standing working condition;
and the second charging interface is connected with a second relay in the bidirectional vehicle-mounted charger and used for supplying power to the external load when the vehicle is in the standing working condition or the running working condition.
6. The vehicular power system according to claim 5, further comprising: and the first relay and the second relay are fixed on the insulating pad.
7. The vehicle-mounted power supply system according to claim 6, wherein the first relay is connected with the first charging interface, the second relay is connected with the second charging interface through a high-voltage alternating-current connector, and a direct-current power interface of the bidirectional vehicle-mounted charger is connected with the power battery pack through a high-voltage direct-current connector.
8. The vehicular power system according to claim 5, wherein the second charging interface is a three-hole socket.
9. The vehicular power system according to any one of claims 5 to 8, further comprising: and the control terminal is connected with the bidirectional vehicle-mounted charger and is used for controlling the bidirectional vehicle-mounted charger to supply power to the external load.
10. A charging control method for a bidirectional vehicle-mounted charger, characterized in that, the vehicle-mounted power supply system based on any one of claims 5 to 9 comprises:
after a discharging instruction is received, waking up the bidirectional vehicle-mounted charger and monitoring the state of the bidirectional vehicle-mounted charger, and executing the following steps when the bidirectional vehicle-mounted charger is in a normal working state:
identifying the current working condition of the vehicle;
if the vehicle is in a standing working condition, controlling a first relay and/or a second relay in the bidirectional vehicle-mounted charger to be conducted so as to supply power to an external load corresponding to the discharging instruction through a first charging interface and/or a second charging interface;
and if the vehicle is in a running working condition, controlling a second relay of the bidirectional vehicle-mounted charger to be conducted so as to supply power to an external load corresponding to the discharging instruction through a second charging interface.
11. An automobile, comprising: the vehicular electric power source system according to any one of claims 5 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010192024.7A CN113492702A (en) | 2020-03-18 | 2020-03-18 | Bidirectional vehicle-mounted charger, vehicle-mounted power supply system, charging control method and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010192024.7A CN113492702A (en) | 2020-03-18 | 2020-03-18 | Bidirectional vehicle-mounted charger, vehicle-mounted power supply system, charging control method and automobile |
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| CN113492702A true CN113492702A (en) | 2021-10-12 |
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| CN202010192024.7A Pending CN113492702A (en) | 2020-03-18 | 2020-03-18 | Bidirectional vehicle-mounted charger, vehicle-mounted power supply system, charging control method and automobile |
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Application publication date: 20211012 |