CN113147445A - Vehicle-mounted charger and charging control method thereof - Google Patents
Vehicle-mounted charger and charging control method thereof Download PDFInfo
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- CN113147445A CN113147445A CN202110462969.0A CN202110462969A CN113147445A CN 113147445 A CN113147445 A CN 113147445A CN 202110462969 A CN202110462969 A CN 202110462969A CN 113147445 A CN113147445 A CN 113147445A
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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
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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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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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
- B60L53/60—Monitoring or controlling charging stations
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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
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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
- 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
- Y02T90/12—Electric charging stations
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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
- 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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides a vehicle-mounted charger and a charging control method of the vehicle-mounted charger, and relates to the technical field of vehicle-mounted chargers. This on-vehicle machine that charges includes: the power supply device comprises a power supply battery, a first auxiliary source, a second auxiliary source, a wake-up circuit, a monitoring unit and a power unit; the power supply battery is respectively and electrically connected with the input ends of the first auxiliary source and the second auxiliary source; the output end of the wake-up circuit is electrically connected with the control end of the first auxiliary source so as to output a first enabling signal according to the wake-up signal, so that the first auxiliary source supplies power to the monitoring unit under the action of the first enabling signal; a first output end of the monitoring unit is electrically connected with a control end of the second auxiliary source so as to output a second enabling signal according to the received charging command; the output end of the second auxiliary source is electrically connected with the power supply end of the power unit, so that the second auxiliary source supplies power to the power unit under the action of the second enabling signal, and the power unit starts to charge. By applying the embodiment of the application, the power consumption of the vehicle-mounted charger can be reduced, and the power consumption is reduced.
Description
Technical Field
The application relates to the technical field of vehicle-mounted chargers, in particular to a vehicle-mounted charger and a charging control method of the vehicle-mounted charger.
Background
With the enhancement of public environmental awareness, the electric vehicle industry as a new energy vehicle representative is rapidly developing. The vehicle-mounted charger is fixedly mounted on the electric vehicle and can provide electric energy of an external power supply to the power battery. The vehicle-mounted charger serves as a core component of the electric vehicle, and the power consumption of the vehicle-mounted charger becomes a key point of current research.
At present, a vehicle-mounted charger is awakened according to preset time, and after the vehicle-mounted charger is awakened, the vehicle-mounted charger detects whether a CP (Clock Pulse) signal exists or not, and if the CP signal exists, a power battery is charged.
However, after the vehicle-mounted charger is awakened by adopting the prior art, when a CP signal or a charging start instruction is not detected yet, the power unit on the vehicle-mounted charger is always in a power-on state, so that the power consumption of the vehicle-mounted charger is increased, and unnecessary power consumption is generated.
Disclosure of Invention
An object of the present application is to provide a vehicle-mounted charger and a charging control method thereof, which can reduce power consumption of the vehicle-mounted charger and reduce power consumption, in view of the above-mentioned deficiencies in the prior art.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a vehicle-mounted charger, which includes: the power supply device comprises a power supply battery, a first auxiliary source, a second auxiliary source, a wake-up circuit, a monitoring unit and a power unit; the power supply battery is respectively and electrically connected with the input ends of the first auxiliary source and the second auxiliary source;
the input end of the wake-up circuit is used for acquiring a wake-up signal, and the output end of the wake-up circuit is electrically connected with the control end of the first auxiliary source so as to output a first enable signal according to the wake-up signal; the output end of the first auxiliary source is electrically connected with the power supply end of the monitoring unit, so that the first auxiliary source supplies power to the monitoring unit under the action of the first enabling signal;
a first input end of the monitoring unit is used for acquiring a charging command, and a first output end of the monitoring unit is electrically connected with a control end of the second auxiliary source so as to output a second enabling signal according to the charging command; the output end of the second auxiliary source is electrically connected with the power supply end of the power unit, so that the second auxiliary source supplies power to the power unit under the action of the second enabling signal, and the power unit starts to charge.
Optionally, the second output end of the monitoring unit is electrically connected to the control end of the power unit, so that the monitoring unit outputs a charging control signal according to the charging command, and the power unit starts charging based on the charging control signal.
Optionally, the second input end of the monitoring unit is further electrically connected to the control end of the power unit, so that when the power failure detected by the power unit is obtained, an disable signal is output to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
Optionally, an input end of the wake-up circuit is used for being electrically connected to a charging pile to obtain the wake-up signal sent by the charging pile, and an input end of the power unit is electrically connected to an alternating current output end of the charging pile; or the input end of the wake-up circuit is used for being electrically connected with a vehicle controller so as to obtain the wake-up signal sent by the vehicle controller, and the input end of the power unit is electrically connected with the alternating current output end of the alternating current commercial power.
In a second aspect, an embodiment of the present application further provides a charging control method for a vehicle-mounted charger, where the method is applied to the vehicle-mounted charger of the first aspect, and the method includes:
the wake-up circuit outputs a first enable signal to the first auxiliary source according to the wake-up signal, so that the first auxiliary source supplies power to the monitoring unit under the action of the first enable signal;
the monitoring unit outputs a second enabling signal to the second auxiliary source according to the charging command, so that the second auxiliary source supplies power to the power unit under the action of the second enabling signal, and the power unit starts to charge.
Optionally, the method further comprises:
if the monitoring unit acquires a charging completion command, the monitoring unit outputs a charging stop control signal to the power unit, so that the power unit closes power output to stop charging;
the monitoring unit outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
Optionally, the method further comprises:
in the charging process, if the monitoring unit acquires the condition of monitoring failure, the monitoring unit outputs a charging stop control signal to the power unit, so that the power unit closes power output to stop charging;
the monitoring unit also outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
Optionally, the method further comprises:
if the monitoring unit detects that the monitoring fault is eliminated, the monitoring unit outputs the second enabling signal to the second auxiliary source again so that the second auxiliary source supplies power to the power unit again;
the monitoring unit also outputs a charging control signal to the power unit, so that the power unit restarts power output to start charging.
Optionally, the method further comprises:
in the charging process, if the power unit detects a power failure, the power unit closes power output to stop charging and outputs the power failure to the monitoring unit;
the monitoring unit outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
Optionally, the method further comprises:
if the power failure is a power restorable overtime failure, the monitoring unit outputs the second enabling signal to the second auxiliary source at preset intervals, so that the second auxiliary source supplies power to the power unit again, and the power unit detects whether the power restorable overtime failure is recovered;
if the power unit detects that the power recoverable overtime fault is recovered, the power unit opens power output to restart charging;
if the power unit detects that the power recoverable timeout fault is not recovered, the power unit resends the power recoverable timeout fault to the monitoring unit, so that the monitoring unit outputs a disable signal to the second auxiliary source again, and the second auxiliary source stops supplying power to the power unit.
The beneficial effect of this application is:
the embodiment of the application provides a vehicle-mounted charger and a charging control method of the vehicle-mounted charger, and the vehicle-mounted charger comprises: the power supply device comprises a power supply battery, a first auxiliary source, a second auxiliary source, a wake-up circuit, a monitoring unit and a power unit; the power supply battery is respectively and electrically connected with the input ends of the first auxiliary source and the second auxiliary source; the input end of the wake-up circuit is used for acquiring a wake-up signal, and the output end of the wake-up circuit is electrically connected with the control end of the first auxiliary source so as to output a first enable signal according to the wake-up signal; the output end of the first auxiliary source is electrically connected with the power supply end of the monitoring unit, so that the first auxiliary source supplies power to the monitoring unit under the action of the first enabling signal; the first input end of the monitoring unit is used for acquiring a charging command, and the first output end of the monitoring unit is electrically connected with the control end of the second auxiliary source so as to output a second enabling signal according to the charging command; the output end of the second auxiliary source is electrically connected with the power supply end of the power unit, so that the second auxiliary source supplies power to the power unit under the action of the second enabling signal, and the power unit starts to charge.
By adopting the vehicle-mounted charger provided by the embodiment of the application, when the wake-up circuit in the vehicle-mounted charger does not receive the wake-up signal, the vehicle-mounted charger always processes the sleep state. When the wake-up circuit in the vehicle-mounted charger receives the wake-up signal, the first auxiliary source in the vehicle-mounted charger only supplies power to the monitoring unit under the action of the first enabling signal, the monitoring unit consumes little power, and at the moment, the vehicle-mounted charger is in a standby state. On the premise that the monitoring unit is powered on and a charging instruction exists, the second auxiliary source in the vehicle-mounted charger enables the power unit to be powered on and charges the battery on the premise of the second enabling signal. That is to say, after the vehicle-mounted charger is awakened (in a standby state), if the vehicle controller does not issue a charging instruction, only the monitoring unit on the vehicle-mounted charger is in a powered-on state, and the power unit on the vehicle-mounted charger is in a non-powered-on state. Therefore, the fact that the part (power unit) with the largest power consumption on the vehicle-mounted charger is not started in the period of time after the vehicle-mounted charger is awakened and before the vehicle-mounted charger is charged is guaranteed, the electric quantity of a power supply battery is saved, the power consumption of the vehicle-mounted charger can be reduced, and the power consumption is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a vehicle-mounted charger according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another vehicle-mounted charger according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an application scenario of a vehicle-mounted charger according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another application scenario of a vehicle-mounted charger according to an embodiment of the present application;
fig. 5 is a schematic flow chart of a charging control method of a vehicle-mounted charger according to an embodiment of the present application;
fig. 6 is a schematic flow chart of another charging control method of a vehicle-mounted charger according to an embodiment of the present application;
fig. 7 is a schematic flowchart of a charging control method of another vehicle-mounted charger according to an embodiment of the present application;
fig. 8 is a schematic flowchart of a charging control method of another vehicle-mounted charger according to an embodiment of the present application;
fig. 9 is a schematic flow chart of a charging control method of another vehicle-mounted charger according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 some embodiments of the present application, but not all embodiments.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the application. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Fig. 1 is a schematic structural diagram of a vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 1, the vehicle-mounted charger includes: a power supply battery 101, a first auxiliary source 102, a second auxiliary source 103, a wake-up circuit 104, a monitoring unit 105 and a power unit 106; the power supply battery 101 is electrically connected to input terminals of the first auxiliary source 102 and the second auxiliary source 103, respectively.
The input end of the wake-up circuit 104 is used for acquiring a wake-up signal, and the output end of the wake-up circuit 104 is electrically connected to the control end of the first auxiliary source 102 to output a first enable signal according to the wake-up signal; the output end of the first auxiliary source 102 is electrically connected to the power supply end of the monitoring unit 105, so that the first auxiliary source 102 supplies power to the monitoring unit 102 under the action of the first enable signal;
a first input end of the monitoring unit 105 is used for acquiring a charging command, and a first output end of the monitoring unit 105 is electrically connected to the control end of the second auxiliary source 103 so as to output a second enable signal according to the charging command; the output terminal of the second auxiliary source 103 is electrically connected to the power supply terminal of the power unit 106, so that the second auxiliary source 103 supplies power to the power unit 106 under the action of the second enable signal, and the power unit 106 starts to charge.
The power supply battery 101 may be referred to as a low-voltage battery, which generally provides 12V or 24V, and is a power supply for supplying power to the internal unit of the vehicle-mounted charger. The internal units of the vehicle-mounted charger can be divided into two types according to the power consumption of the internal units of the vehicle-mounted charger to the power supply battery 101, the two types are respectively a monitoring unit 105 and a power unit 106, and the power consumption of the power unit 106 is greater than that of the monitoring unit 105. The power required by the monitoring unit 105 is provided by the first auxiliary source 102 and the power required by the power unit 106 is provided by the second auxiliary source 103.
When the input end of the wake-up circuit 104 does not receive the wake-up signal, the vehicle-mounted charger is always in a sleep state, and when the input end of the wake-up circuit 104 receives the wake-up signal, the output end of the wake-up circuit 104 may output a first enable signal, and the first auxiliary source 102 is controlled by the control end of the first auxiliary source 102 to supply power to the monitoring unit 105 based on the first enable signal. After the monitoring unit 105 is powered on, data interaction can be performed with the vehicle controller and/or the charging pile.
On the premise that the monitoring Unit 105 is powered on, after the first input end of the monitoring Unit 105 receives a charging instruction sent by the Vehicle controller, the first output end of the monitoring Unit 105 may output a second enable signal, and the second auxiliary source 103 is controlled by the Control end of the second auxiliary source 103 to supply power to the power Unit 106 based on the second enable signal, where the charging instruction obtained by the first input end of the monitoring Unit 105 may specifically be generated by a Vehicle Controller (VCU), or may be generated by a Battery Management System (BMS), which is not limited in this application. After the power unit 106 is powered on, the battery 107 can be charged through a sampling circuit, a driving circuit and the like on the power unit, and the battery 107 is a power battery of the vehicle.
The first auxiliary source 102 and the second auxiliary source 103 correspond to two switches, and are used for supplying the electric energy of the power supply battery 101 to the monitoring unit 105 and the power unit 106, respectively.
To sum up, according to the vehicle-mounted charger provided by the application, when the wake-up circuit does not receive the wake-up signal, the vehicle-mounted charger always processes the sleep state. When the wake-up circuit in the vehicle-mounted charger receives the wake-up signal, the first auxiliary source in the vehicle-mounted charger only supplies power to the monitoring unit under the action of the first enabling signal, the monitoring unit consumes little power, and at the moment, the vehicle-mounted charger is in a standby state. On the premise that the monitoring unit is powered on and a charging instruction exists, the second auxiliary source in the vehicle-mounted charger enables the power unit to be powered on and charges the battery on the premise of the second enabling signal. That is to say, after the vehicle-mounted charger is awakened (in a standby state), if the vehicle controller does not issue a charging instruction, only the monitoring unit on the vehicle-mounted charger is in a powered-on state, and the power unit on the vehicle-mounted charger is in a non-powered-on state. Therefore, the fact that the part (the power unit 106) with the largest power consumption on the vehicle-mounted charger is not started in the period after the vehicle-mounted charger is awakened and before the vehicle-mounted charger is charged is guaranteed, the power of a power supply battery is saved, the power consumption of the vehicle-mounted charger can be reduced, and the power consumption is reduced.
Fig. 2 is a schematic structural diagram of another vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 2, a second output terminal of the monitoring unit 105 is electrically connected to the control terminal of the power unit 106, so that the monitoring unit 105 outputs a charging control signal according to the charging command, so that the power unit 106 starts charging based on the charging control signal.
The monitoring unit 105 outputs a second enable signal to the second auxiliary power source 103 through the first output terminal thereof, and controls the second auxiliary power source 103 to supply power to the power supply terminal of the power unit 106 based on the second enable signal, so that the power unit 106 is in a power-on state. On the premise that the power unit 106 is in a power-on state, the monitoring unit 105 may transmit the charging control signal output by the second output terminal thereof to the control terminal of the power unit 106 in a CAN (Controller Area Network) communication manner, so that the power unit 106 charges the battery 107. That is, the power unit 106 charges the battery 107, and the monitoring unit 105 needs to transmit the second enable signal and the charging control signal.
Optionally, the second input terminal of the monitoring unit 105 is further electrically connected to the control terminal of the power unit 106, so as to output a disable signal to the second auxiliary source 103 when acquiring the power failure detected by the power unit 106, so that the second auxiliary source 103 stops supplying power to the power unit 106.
The second input and the second output of the monitoring unit 105 are typically a port, and the port CAN communicate with the power unit 106 through CAN communication. Specifically, the power unit 106 may detect whether a power failure exists through the detection subunit thereon, and if the power failure exists, the power unit 106 may send the power failure to the second input terminal of the monitoring unit 105 in a form of a message through a CAN communication, where the power failure may include a power lock failure (e.g., an output short circuit, an output overcurrent, an internal failure, etc.), and a power recoverable timeout failure (e.g., an input failure, an output overvoltage, an internal communication failure, an over-temperature failure, etc.). When receiving the power failure message, the monitoring unit 105 may output a disable signal to the control terminal of the second auxiliary source 103 through the first output terminal thereof, and control the second auxiliary source 103 to stop supplying power to the power unit 106 based on the disable signal, that is, the second auxiliary source 103 does not supply the power of the power supply battery 101 to the power unit 106.
It can be seen that, when the power unit 106 detects a power failure, the power failure may be reported to the monitoring unit 105, and the monitoring unit 105 may power down the power unit 106 through the second auxiliary source 103, so that the power unit 106 is in a sleep state, and at this time, the vehicle-mounted charger is in a standby state. Therefore, the electric quantity of the power supply battery 101 can be saved under the condition of power failure, so that the electric power consumption of the vehicle-mounted charger is further reduced, and unnecessary power consumption is avoided.
The following embodiment introduces an application scenario of the vehicle-mounted charger, where the application scenario may include an application scenario in which the vehicle-mounted charger is directly connected to the charging pile and an application scenario in which the vehicle-mounted charger is directly connected to the ac power supply.
Fig. 3 is a schematic structural diagram of an application scenario of a vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 3, an input terminal of the wake-up circuit 104 is electrically connected to the charging pile 300 to obtain a wake-up signal sent by the charging pile 300, and an input terminal of the power unit 106 is electrically connected to an ac output terminal of the charging pile 300.
If the vehicle-mounted charger directly charges the battery 107 through the charging pile 300, the wake-up signal received by the input terminal of the wake-up circuit 104 is from the charging pile 300, and the wake-up signal may be a CC (charging gun connection confirmation) signal or a CP (clock pulse) signal. The wake-up circuit 104 may output a first enable signal when receiving the wake-up signal, and may cause the first auxiliary source 102 to supply power to the monitoring unit 105 based on the first enable signal. On the premise that the monitoring unit 105 is powered on, and the monitoring unit 105 receives the charging command, the power unit 106 may convert the ac power of the charging pile 300 input from the upper input terminal thereof into dc power and transmit the dc power to the battery 107 to charge the battery 107.
Fig. 4 is a schematic structural diagram of another application scenario of a vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 4, an input terminal of the wake-up circuit 104 is electrically connected to the vehicle controller 400 to obtain a wake-up signal sent by the vehicle controller 400, and an input terminal of the power unit 106 is electrically connected to an ac output terminal of the ac mains.
If the vehicle-mounted charger is directly connected to the ac mains to charge the battery 107, the wake-up signal received by the input terminal of the wake-up circuit 104 is from the vehicle controller 400, and the wake-up signal may be a signal detected by the vehicle controller 400, such as a signal to be charged triggered by a user.
The wake-up circuit 104 may output a first enable signal when receiving the wake-up signal, and may cause the first auxiliary source 102 to supply power to the monitoring unit 105 based on the first enable signal. On the premise that the monitoring unit 105 is powered on, and the monitoring unit 105 receives the charging command, the power unit 106 may convert the ac power of the ac mains 401 input at its upper input end into dc power and transmit the dc power to the battery 107 to charge the battery 107.
The charging control method executed by the vehicle-mounted charger provided by the application is described below with reference to the accompanying drawings. Fig. 5 is a schematic flow chart of a charging control method of a vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 5, the method may include:
s501, the wake-up circuit outputs a first enable signal to the first auxiliary source according to the wake-up signal, so that the first auxiliary source supplies power to the monitoring unit under the action of the first enable signal.
S502, the monitoring unit outputs a second enable signal to the second auxiliary source according to the charging command, so that the second auxiliary source supplies power to the power unit under the action of the second enable signal, and the power unit starts to charge.
After receiving the wake-up signal, the wake-up circuit can output a first enable signal through a first output end on the wake-up circuit, and controls the first auxiliary source to supply power to the monitoring unit through a control end of the first auxiliary source based on the first enable signal. Reference is made to the above description for details which will not be described in detail here.
Fig. 6 is a schematic flow chart of another charging control method of a vehicle-mounted charger according to an embodiment of the application. As shown in fig. 6, the method may include:
s601, if the monitoring unit obtains a charging completion command, the monitoring unit outputs a charging stop control signal to the power unit, so that the power unit closes power output to stop charging.
S602, the monitoring unit outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
When the monitoring unit receives a charging completion command sent by the vehicle controller, the monitoring unit can output a charging stop control signal to the control end of the power unit through the second output end of the monitoring unit, and the power unit is controlled to stop charging the battery based on the charging stop control signal. Meanwhile, the monitoring unit can output a disable signal to the second auxiliary source through the first output end on the monitoring unit, and control the second auxiliary source to stop supplying power to the power unit based on the disable signal, namely the second auxiliary source does not supply the electric energy of the power supply battery to the power unit, and at the moment, the vehicle-mounted charger is in a standby state. If the monitoring unit obtains a sleep command generated by the vehicle controller, the monitoring unit enters a sleep state, namely the vehicle-mounted charger is in the sleep state.
Therefore, the vehicle-mounted charger can be ensured to be in a closed state at the time after the charging is finished and before the vehicle controller issues the sleep instruction, the part (the power unit 106) with the largest power consumption on the vehicle-mounted charger is saved, the power consumption of the power supply battery is reduced, and unnecessary power consumption is avoided.
The following embodiments are embodiments when a fault occurs in a vehicle-mounted charger, where the fault may include a monitoring fault and a power fault, and the power fault may include a power recoverable timeout fault.
Fig. 7 is a schematic flow chart of a charging control method of another vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 7, the method may include:
s701, in the charging process, if the monitoring unit acquires the condition of monitoring faults, the monitoring unit outputs a charging stop control signal to the power unit, so that the power unit closes power output to stop charging.
S702, the monitoring unit further outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
In the process that the power unit charges the battery, the monitoring unit detects whether a monitoring fault exists through a detection subunit on the monitoring unit, and if the monitoring fault exists (such as a CC fault, a CP fault, an electronic lock fault, a cable temperature fault and the like), the monitoring unit can output a charging stop control signal to the control end of the power unit through a second output end on the monitoring unit, and control the power unit to stop charging the battery based on the charging stop control signal. Meanwhile, the monitoring unit can output a disable signal to the second auxiliary source through the first output end on the monitoring unit, and control the second auxiliary source to stop supplying power to the power unit based on the disable signal, namely the second auxiliary source does not supply the electric energy of the power supply battery to the power unit, and at the moment, the vehicle-mounted charger is in a standby state.
Optionally, if the monitoring unit detects that the monitoring fault is eliminated, the monitoring unit outputs the second enable signal to the second auxiliary source again, so that the second auxiliary source supplies power to the power unit again; the monitoring unit also outputs a charging control signal to the power unit, so that the power unit restarts power output to start charging.
If the detecting subunit on the monitoring unit detects that the monitoring fault is removed, the monitoring unit may output a second enable signal to the second auxiliary source through the first output terminal on the monitoring unit again, and control the second auxiliary source to supply power to the power supply terminal of the power unit based on the second enable signal, so that the power unit is in a power-on state. On the premise that the power unit is in a power-on state, the monitoring unit CAN also transmit a charging control signal output by the second output end of the monitoring unit to the control end of the power unit in a CAN communication mode, so that the power unit charges the battery.
Therefore, the faults related to the monitoring unit can be detected only by the monitoring unit, and the power unit can be in a dormant state, so that the detection of the monitoring faults is not influenced, and the minimum power consumption of the vehicle-mounted charger can be achieved during the recovery period of the monitoring faults.
Fig. 8 is a schematic flow chart of a charging control method of another vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 8, the method may include:
s801, in the charging process, if the power unit detects a power failure, the power unit closes power output to stop charging, and outputs the power failure to the monitoring unit.
S802, the monitoring unit outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
In the charging process, the power unit detects whether a power failure exists through a detection subunit on the power unit, and if the power failure exists, the power unit actively closes an interface for supplying power to the battery, namely stops charging the battery. Meanwhile, the power unit CAN send the power failure to the second input end of the monitoring unit in a message form through a CAN communication mode, when the monitoring unit receives the power failure message, a disable signal CAN be output to the control end of the second auxiliary source through the first output end of the monitoring unit, and the second auxiliary source is controlled to stop supplying power to the power unit based on the disable signal.
Fig. 9 is a schematic flow chart of a charging control method of another vehicle-mounted charger according to an embodiment of the present application. As shown in fig. 9, the method may include:
s901, if the power failure is a power recoverable timeout failure, the monitoring unit outputs the second enable signal to the second auxiliary source every a preset time interval, so that the second auxiliary source supplies power to the power unit again, and the power unit detects whether the power recoverable timeout failure is recovered.
The power failure may be a power lock failure, a power recoverable timeout failure, or the like. When the power failure is a power lock failure, the monitoring unit controls the second auxiliary source to stop supplying power to the power unit, the vehicle-mounted charger is in a standby state, if the monitoring unit receives a sleep instruction sent by the vehicle controller, the monitoring unit can enable the vehicle-mounted charger to be in the sleep state, and if the vehicle controller does not send the sleep instruction, the vehicle-mounted charger is always in the standby state. This ensures that the monitoring unit consumes minimal power during standby.
When the power failure is the power recoverable timeout failure, the monitoring unit may control the second auxiliary source to supply power to the power unit according to a preset duration and based on the second enable signal. After the power unit is powered on, the power unit detects whether the power recoverable timeout fault is recovered.
And S902, if the power unit detects that the power recoverable timeout fault is recovered, the power unit opens power output to restart charging.
S903, if the power unit detects that the power recoverable timeout fault is not recovered, the power unit resends the power recoverable timeout fault to the monitoring unit, so that the monitoring unit outputs a disable signal to the second auxiliary source again, so that the second auxiliary source stops supplying power to the power unit.
When the power unit detects the power recoverable timeout fault recovery through the detection subunit on the power unit, the power unit can be powered up again, and power is output to charge the battery.
When the power unit detects that the power recoverable timeout fault is not recovered through the detection subunit on the power unit, the power unit CAN send the power recoverable timeout fault non-recovery message to the monitoring unit in a CAN communication mode, the monitoring unit CAN output a disable signal to the second auxiliary source through the first output end of the power recoverable timeout fault non-recovery message based on the power recoverable timeout fault non-recovery message, and control the second auxiliary source to stop supplying power to the power supply end of the power unit based on the disable signal, so that the power unit is in a power-off state. When the preset time length is up, the monitoring unit controls the power unit to be electrified again, and the power unit detects whether the power recoverable overtime fault is recovered or not again, and the like.
If the power unit does not detect the power recoverable timeout fault recovered state after a preset period of time, the vehicle controller can send a sleep instruction to the monitoring unit, and the monitoring unit can enable the vehicle-mounted charger to be in a sleep state based on the sleep instruction.
It can be seen that, in a power failure (power recoverable timeout failure) related to the power unit, the monitoring unit may indirectly control the power unit to detect whether the power failure is recovered, so that not only the detection of the power failure is not affected, but also the vehicle-mounted charger may achieve the minimum power consumption during the recovery of the power failure. Especially in the ac mains scenario, since the ac mains is directly connected to the power unit, the mains failure can only be detected at the power unit, and in this way unnecessary power consumption can be avoided during the recovery from the mains failure.
The implementation principle and the technical effect of the charging control method of the vehicle-mounted charger are similar to those of the vehicle-mounted charger, and detailed description is omitted here.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. The utility model provides a vehicle-mounted charger which characterized in that, vehicle-mounted charger includes: the power supply device comprises a power supply battery, a first auxiliary source, a second auxiliary source, a wake-up circuit, a monitoring unit and a power unit; the power supply battery is respectively and electrically connected with the input ends of the first auxiliary source and the second auxiliary source;
the input end of the wake-up circuit is used for acquiring a wake-up signal, and the output end of the wake-up circuit is electrically connected with the control end of the first auxiliary source so as to output a first enable signal according to the wake-up signal; the output end of the first auxiliary source is electrically connected with the power supply end of the monitoring unit, so that the first auxiliary source supplies power to the monitoring unit under the action of the first enabling signal;
a first input end of the monitoring unit is used for acquiring a charging command, and a first output end of the monitoring unit is electrically connected with a control end of the second auxiliary source so as to output a second enabling signal according to the charging command; the output end of the second auxiliary source is electrically connected with the power supply end of the power unit, so that the second auxiliary source supplies power to the power unit under the action of the second enabling signal, and the power unit starts to charge.
2. The vehicle-mounted charger according to claim 1, wherein the second output terminal of the monitoring unit is electrically connected to the control terminal of the power unit, so that the monitoring unit outputs a charging control signal according to the charging command, so that the power unit starts charging based on the charging control signal.
3. The vehicle-mounted charger according to claim 2, wherein the second input terminal of the monitoring unit is further electrically connected to a control terminal of the power unit, so that when a power failure detected by the power unit is obtained, an disable signal is output to the second auxiliary source, and the second auxiliary source stops supplying power to the power unit.
4. The vehicle-mounted charger according to any one of claims 1 to 3, wherein an input end of the wake-up circuit is electrically connected to a charging pile to obtain the wake-up signal sent by the charging pile, and an input end of the power unit is electrically connected to an alternating current output end of the charging pile; alternatively, the first and second electrodes may be,
the input end of the wake-up circuit is used for being electrically connected with a vehicle controller so as to obtain the wake-up signal sent by the vehicle controller, and the input end of the power unit is electrically connected with the alternating current output end of the alternating current commercial power.
5. A charging control method of a vehicle-mounted charger, which is applied to the vehicle-mounted charger according to claim 3, the method comprising:
the wake-up circuit outputs a first enable signal to the first auxiliary source according to the wake-up signal, so that the first auxiliary source supplies power to the monitoring unit under the action of the first enable signal;
the monitoring unit outputs a second enabling signal to the second auxiliary source according to the charging command, so that the second auxiliary source supplies power to the power unit under the action of the second enabling signal, and the power unit starts to charge.
6. The method of claim 5, further comprising:
if the monitoring unit acquires a charging completion command, the monitoring unit outputs a charging stop control signal to the power unit, so that the power unit closes power output to stop charging;
the monitoring unit outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
7. The method of claim 5, further comprising:
in the charging process, if the monitoring unit acquires the condition of monitoring failure, the monitoring unit outputs a charging stop control signal to the power unit, so that the power unit closes power output to stop charging;
the monitoring unit also outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
8. The method of claim 7, further comprising:
if the monitoring unit detects that the monitoring fault is eliminated, the monitoring unit outputs the second enabling signal to the second auxiliary source again so that the second auxiliary source supplies power to the power unit again;
the monitoring unit also outputs a charging control signal to the power unit, so that the power unit restarts power output to start charging.
9. The method of claim 5, further comprising:
in the charging process, if the power unit detects a power failure, the power unit closes power output to stop charging and outputs the power failure to the monitoring unit;
the monitoring unit outputs a disable signal to the second auxiliary source, so that the second auxiliary source stops supplying power to the power unit.
10. The method of claim 9, further comprising:
if the power failure is a power restorable overtime failure, the monitoring unit outputs the second enabling signal to the second auxiliary source at preset intervals, so that the second auxiliary source supplies power to the power unit again, and the power unit detects whether the power restorable overtime failure is recovered;
if the power unit detects that the power recoverable overtime fault is recovered, the power unit opens power output to restart charging;
if the power unit detects that the power recoverable timeout fault is not recovered, the power unit resends the power recoverable timeout fault to the monitoring unit, so that the monitoring unit outputs a disable signal to the second auxiliary source again, and the second auxiliary source stops supplying power to the power unit.
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