CN116674424A - Vehicle power supply method and system, nonvolatile storage medium and vehicle - Google Patents

Vehicle power supply method and system, nonvolatile storage medium and vehicle Download PDF

Info

Publication number
CN116674424A
CN116674424A CN202310595860.3A CN202310595860A CN116674424A CN 116674424 A CN116674424 A CN 116674424A CN 202310595860 A CN202310595860 A CN 202310595860A CN 116674424 A CN116674424 A CN 116674424A
Authority
CN
China
Prior art keywords
vehicle
relay
state
current converter
controlling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310595860.3A
Other languages
Chinese (zh)
Inventor
刘元治
尹建坤
郭丁伊
祝浩
刘加明
巴特
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAW Group Corp
Original Assignee
FAW Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FAW Group Corp filed Critical FAW Group Corp
Priority to CN202310595860.3A priority Critical patent/CN116674424A/en
Publication of CN116674424A publication Critical patent/CN116674424A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or 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
    • B60L2210/00—Converter types
    • 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
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application discloses a vehicle power supply method and system, a nonvolatile storage medium and a vehicle. Wherein the method comprises the following steps: in response to receiving a control instruction for the vehicle to enter a preset state, controlling a current converter in the vehicle to be in a working mode corresponding to the preset state, wherein the working mode is used for maintaining the voltage of the current converter at a voltage required by a target load in the vehicle in the preset state, and the current converter is directly connected with a power battery in the vehicle; and controlling the current converter in the working mode to supply power to the target load. The application solves the technical problem of vehicle power consumption waste.

Description

Vehicle power supply method and system, nonvolatile storage medium and vehicle
Technical Field
The application relates to the field of intelligent automobiles, in particular to a vehicle power supply method and system, a nonvolatile storage medium and a vehicle.
Background
At present, traditional electric automobile is equipped with high-voltage battery and 12V low-voltage battery simultaneously, and high-voltage battery and low-voltage battery divide work to provide the electric quantity for the vehicle, and high-voltage battery not only supplies power for the vehicle, also need to charge for low-voltage battery when low-voltage battery electric quantity is deficient, and the battery can produce certain consumption extravagant at the standby, and when traditional electric automobile is in operation, two batteries supply power for the vehicle simultaneously, leads to the extravagant problem of vehicle consumption.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a vehicle power supply method and system, a nonvolatile storage medium and a vehicle, so as to at least solve the technical problem of vehicle power consumption waste.
According to an aspect of an embodiment of the present application, there is provided a vehicle power supply method including: in response to receiving a control instruction for the vehicle to enter a preset state, controlling a current converter in the vehicle to be in a working mode corresponding to the preset state, wherein the working mode is used for maintaining the voltage of the current converter at a voltage required by a target load in the vehicle in the preset state, and the current converter is directly connected with a power battery in the vehicle; and controlling the current converter in the working mode to supply power to the target load.
Optionally, the preset state includes one of: the method for controlling the current converter in the vehicle to be in a power consumption mode corresponding to the preset state comprises the following steps of: in response to receiving a control instruction for the vehicle to enter a dormant state or an off state, controlling a current converter in the vehicle to be in a low power consumption mode; and controlling the current converter in the vehicle to be in a normal power consumption mode in response to receiving a control instruction for the vehicle to enter a starting state or a driving state, wherein the power consumption of the current converter in the normal power consumption mode is larger than that of the current converter in the low power consumption mode.
Optionally, in the case that the vehicle enters a driving state, the method further includes: controlling a relay in the vehicle to be in a target state so that a motor in the vehicle is in a torque mode, wherein the relay is disposed between the power battery and an inverter of the motor; the motor in torque mode is utilized to power the vehicle.
Optionally, the target state includes: a closed state, an open state, controlling a relay in a vehicle to be in a target state such that a motor in the vehicle is in a torque mode, comprising: the method comprises the steps of determining that a relay is a main positive relay, a main negative relay and a pre-charging relay, wherein the main positive relay is arranged between a positive electrode of a power battery and an inverter, the main negative relay is arranged between a negative electrode of the power battery and the inverter, and the pre-charging relay is connected with the main positive relay in parallel; the main positive relay and the main negative relay are controlled to be in a closed state, and the pre-charging relay is controlled to be in an open state, so that the motor is in a torque mode.
Optionally, controlling the main positive relay and the main negative relay to be in a closed state and controlling the pre-charge relay to be in an open state so that the motor is in a torque mode includes: controlling the main negative relay to be in a closed state; controlling the pre-charge relay to be in a closed state in response to the main negative relay being in the closed state; controlling the main positive relay to be in a closed state in response to the pre-charging relay being in the closed state; in response to the main positive relay being in a closed state, the pre-charge relay is controlled to be in an open state such that a motor in the vehicle is in a torque mode.
Optionally, in response to the precharge relay being in a closed state, controlling the main positive relay to be in a closed state includes: in response to the pre-charging relay being in a closed state, pre-charging a motor capacitor connected in parallel on the inverter by using the power battery; and controlling the main positive relay to be in a closed state in response to receiving a charging end instruction of the motor capacitor.
According to another aspect of the embodiment of the present application, there is also provided a vehicle power supply system including: the current converter is connected with a power battery of the vehicle; a target load connected to the current converter; and a relay provided between the power battery and an inverter of a motor in the vehicle.
Optionally, the relay includes: the main positive relay is arranged between the positive electrode of the power battery and the inverter; the main negative relay is arranged between the negative electrode of the power battery and the inverter; and the pre-charging relay is connected with the main positive relay in parallel.
According to another aspect of the embodiments of the present application, there is also provided a nonvolatile storage medium including a stored program, wherein the vehicle power supply method in the above-described embodiments is executed in a processor of a device where the program is controlled to run.
According to another aspect of an embodiment of the present application, there is also provided a vehicle including: one or more processors; a storage means for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the vehicle power supply method in the above-described embodiment.
In the embodiment of the application, in response to receiving a control instruction of a vehicle entering a preset state, a current converter in the vehicle is controlled to be in a working mode corresponding to the preset state; and controlling the current converter in the working mode to supply power to the target load. It should be noted that the working mode of the current converter is determined according to the preset state of the vehicle, so that the current converter supplies power for the target load according to the corresponding working mode, the current converter can supply power according to different working modes, unnecessary power consumption is avoided, the purpose of reducing the power consumption of the vehicle is achieved, the technical effect of ensuring low-voltage power supply of the vehicle in different states by using the current converter is achieved, and the technical problem of wasting the power consumption of the vehicle is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a flow chart of a method of powering a vehicle according to an embodiment of the application;
FIG. 2 is a schematic illustration of an alternative electric vehicle controller communication relationship connection in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram of an alternative low voltage battery-less electric vehicle electrical topology circuit connection in accordance with an embodiment of the present application;
FIG. 4 is a flow chart of an alternative vehicle power method according to an embodiment of the application;
FIG. 5 is a schematic illustration of a vehicle power supply apparatus according to an embodiment of the application;
fig. 6 is a schematic diagram of a vehicle power supply system according to an embodiment of the application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present application, there is provided an embodiment of a vehicle power supply method, it being noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order other than that shown or described herein.
Fig. 1 is a flowchart of a vehicle power supply method according to an embodiment of the present application, as shown in fig. 1, including the steps of:
step S102, in response to receiving a control instruction for the vehicle to enter a preset state, controlling a current converter in the vehicle to be in a working mode corresponding to the preset state, wherein the working mode is used for maintaining the voltage of the current converter at a voltage required by a target load in the vehicle in the preset state, and the current converter is directly connected with a power battery in the vehicle.
The vehicle can be a pure electric vehicle or an electric vehicle without a low-voltage storage battery.
The preset state may be a vehicle state set in advance according to needs, including but not limited to: sleep state, OFF state, start (CL 15, soft start mode) state, travel (CL 50, advanced cruise mode) state. The sleep state may be a power saving mode, and may be entered when the vehicle is stopped and not used for a long time. In the sleep state, all unnecessary systems will shut down and the engine will also stop working. This may help conserve energy and extend battery life. The off state may be a vehicle off state. The starting state may be that the engine of the vehicle is started and is in an operating state, so that the vehicle can be driven to run, and various instruments and functions of the vehicle can start to work, such as lights, air conditioners, radios and the like, which are usually used for slowly moving or relieving braking impact when starting. In this mode the vehicle acceleration is limited so that the passenger can ride more comfortably. The running state may be a state in which the vehicle is running on a road, an adaptive cruise function may be realized, and operations such as lane changing, following a preceding vehicle, and the like may be automatically performed according to traffic conditions. While also improving fuel utilization and reducing carbon emissions, including but not limited to: constant speed running, deceleration running, acceleration running, braking and curve transformation.
The control command may be a command to control the current state of the vehicle.
The current converter may be a device for converting a voltage or current signal into a different voltage or current signal, and may have a self-contained control power source, which may be a rechargeable lithium battery or a 12V power source for use by itself generated by a buck control circuit connected to a high voltage circuit.
The operation mode may be an operation mode of a current converter, including but not limited to: low power consumption mode, normal power consumption mode. The low power mode may be a mode in which the current transformer operates with low power consumption. The normal power consumption mode may be when the current converter is operating in a normal manner.
The target load may be active power consumed by the current converter when the voltage is maintained in a predetermined state.
The power battery can be a rechargeable lithium ion battery for driving an electric vehicle, and has the characteristics of high energy density, long service life, quick charge and discharge and the like. The power cells are required to withstand greater loads and more frequent charge and discharge cycles than the starting batteries used in conventional automobiles.
In an alternative embodiment, when the vehicle-mounted system receives a control instruction corresponding to the preset state of the vehicle, a signal corresponding to the preset state is sent to the current converter, and the working mode of the current converter in the vehicle is controlled to be converted into the working mode corresponding to the preset state of the vehicle.
In another alternative embodiment, when the vehicle-mounted system receives a control instruction for the vehicle to enter the dormant state or the closed state, the current converter in the vehicle is controlled to adjust the working mode to a low-power-consumption mode corresponding to the dormant state or the closed state of the vehicle, so that the power consumption of the vehicle is reduced, and unnecessary power consumption waste is avoided. When the vehicle-mounted system receives a control instruction that the vehicle enters a starting state or a running state, a current converter in the vehicle is controlled to adjust the working mode to a normal power consumption mode corresponding to the starting state or the running state of the vehicle, so that normal running of the vehicle is ensured.
It should be noted that, the current converter may be provided with a switch in the vehicle debugging stage, and in the IG-OFF (a mode in which the whole vehicle is only powered by an emergency lamp, a clock, etc. and is not powered by any other fire), the current converter may be turned OFF to stop the operation of the power converter, so that the power supply of the low-voltage load is cut OFF, and the switch may be completely turned on after the normal delivery stage of the vehicle.
Step S104, controlling the current converter in the working mode to supply power for the target load.
In an alternative embodiment, the current mode of operation of the current converter is determined, the current converter determines a target load according to the corresponding mode of operation, and the vehicle is powered according to the target load. For example, when the current working mode of the current converter is determined to be the low-power-consumption mode, the current converter works according to the low-power-consumption mode so as to supply power for a target load by the current converter, and low-voltage power supply of the whole vehicle is realized. When the current working mode of the current converter is determined to be the normal power consumption mode, the current converter works according to the normal power consumption mode so as to supply power for the target load by the current converter.
Through the steps, the current converter in the vehicle can be controlled to be in a working mode corresponding to the preset state in response to receiving the control instruction of the vehicle entering the preset state; and controlling the current converter in the working mode to supply power to the target load. It should be noted that the working mode of the current converter is determined according to the preset state of the vehicle, so that the current converter supplies power for the target load according to the corresponding working mode, the current converter can supply power according to different working modes, unnecessary power consumption is avoided, the purpose of reducing the power consumption of the vehicle is achieved, the technical effect of ensuring low-voltage power supply of the vehicle in different states by using the current converter is achieved, and the technical problem of wasting the power consumption of the vehicle is solved.
It should be noted that, in general, an electric automobile is equipped with both a high-voltage storage battery and a 12V low-voltage storage battery, where the 12V low-voltage storage battery mainly supplies power to low-voltage accessories (such as various control units, low-voltage water pumps, fans, etc. on the vehicle), and when a high-voltage system is powered up, a current converter is usually used to supply power to the low-voltage accessories, and when the low-voltage storage battery is deficient in electric quantity, the current converter charges the low-voltage accessories. For a hybrid vehicle with a conventional starter, a 12V battery is used as a supplement to the current demand of the starter (the buffer current converter has insufficient power capability and the current converter does not have capacitive characteristics). However, for parts with high current requirements such as a starter and the like of a pure electric vehicle, a low-voltage storage battery can be completely replaced by a current converter, and only for low power consumption requirements when the vehicle is dormant, the current converter is required to have a special low power consumption mode to supply power to the vehicle. The design of a set of strategy is suitable for the current converter to operate in different power consumption modes according to different vehicle states, and then the current converter supplies power for a target load according to the working mode, so that the purpose of reducing the power consumption of the vehicle is achieved, the normal use of the vehicle function is ensured, the cost of the whole vehicle is saved, and the waste of the power consumption is avoided.
Optionally, the preset state includes one of: the method for controlling the current converter in the vehicle to be in a power consumption mode corresponding to the preset state comprises the following steps of: in response to receiving a control instruction for the vehicle to enter a dormant state or an off state, controlling a current converter in the vehicle to be in a low power consumption mode; and controlling the current converter in the vehicle to be in a normal power consumption mode in response to receiving a control instruction for the vehicle to enter a starting state or a driving state, wherein the power consumption of the current converter in the normal power consumption mode is larger than that of the current converter in the low power consumption mode.
In an alternative embodiment, when the vehicle-mounted system receives a control instruction for the vehicle to enter a dormant state or a closed state, the control instruction signal of the dormant state or the closed state is forwarded to the current converter, and the current converter determines that the working mode corresponding to the signal of the dormant state or the closed state is a low-power consumption mode, so that the working mode of the current converter is adjusted to be the low-power consumption mode; if the vehicle-mounted system receives a control instruction for the vehicle to enter a starting state or a running state, and meanwhile, an instruction signal of the starting state or the running state is forwarded to the current converter, the current converter determines that a working mode corresponding to the starting state or the running state is a normal power consumption mode, and accordingly the working mode of the current converter is adjusted to be the normal power consumption mode.
In another alternative embodiment, when the vehicle-mounted system receives a control instruction that the vehicle enters a preset state, the vehicle-mounted system determines a working mode corresponding to the current converter according to the current state of the vehicle, so that a signal corresponding to the working mode of the current converter is sent to the current converter, and the current converter supplies power for a target load according to the working mode corresponding to the signal. The sleep state or the off state corresponds to a low power consumption mode of the current converter, and the start state or the running state corresponds to a normal power consumption mode of the current converter.
For example, when the vehicle-mounted system receives a control instruction that the vehicle enters a sleep state or a shutdown state, the vehicle-mounted system determines that a working mode of the current converter corresponding to the sleep state or the shutdown state is a low-power-consumption mode, and the vehicle-mounted system sends the control instruction corresponding to the low-power-consumption mode to the current converter, and the current converter supplies power for a target load according to the low-power-consumption mode. When the vehicle-mounted system receives a control instruction that the vehicle enters a starting state or a running state, the vehicle-mounted system determines that a working mode of the current converter corresponding to the starting state or the running state is a normal power consumption mode, and sends the control instruction corresponding to the normal power consumption mode to the current converter, and the current converter supplies power for a target load according to the normal power consumption mode.
Optionally, in the case that the vehicle enters a driving state, the method further includes: controlling a relay in the vehicle to be in a target state so that a motor in the vehicle is in a torque mode, wherein the relay is disposed between the power battery and an inverter of the motor; the motor in torque mode is utilized to power the vehicle.
The relay may be an electrical device capable of realizing switching control in an electric circuit. The target state may be an operational state of the relay, including but not limited to: a closed state, an open state. The closed state may be that the relay internal contacts are in an on state, that is, under the action of a control signal, the switch contacts of the relay are closed. The open state may be when the relay internal contacts are in a disconnected state, and the relay is unable to transmit a signal or control a load.
The electric machine may be a device for converting electric energy into mechanical energy, and the working state of the electric machine includes, but is not limited to: torque mode. The torque mode may be a mode in which the torque to be output is controlled as a main target when the motor is controlled to move, and the motor adjusts the output power according to a given torque value and speed and achieves a desired rotational force or movement effect.
The inverter may be a device for converting direct current into alternating current.
In an alternative embodiment, when the vehicle enters a driving state, a relay in the vehicle is controlled to be in a closed state, so that a whole vehicle controller (VCU, veh ic le Contro l Un it) can control a motor in the vehicle to be in a torque mode, and when the motor controller (MCU, motor Contro l Un it) reports that the current working mode of the motor is successfully in the torque mode, the whole vehicle controller confirms that high-voltage power-on is completed, and the power system can start working to provide power for driving of the vehicle.
The vehicle includes a plurality of controllers, including: whole car controllers, motor controllers, battery management systems (BMS, battery Management System), engine controllers (EMS, engine Management System), gearbox controllers (TCU, transmi ss ion Contro l Un it). Fig. 2 is a schematic diagram of communication connection between various optional controllers of an electric vehicle according to an embodiment of the present application, where, as shown in fig. 2, a motor controller sends signals to a vehicle controller, where the sent signals include, but are not limited to: motor mode, motor capacitor voltage, motor speed/torque, motor fault condition. The vehicle controller sends control instructions to the motor controller including, but not limited to: a motor mode request, a rotational speed torque request. The vehicle controller sends control instructions to the battery management system of the power battery, including but not limited to: and a relay instruction. The battery management system feeds back battery signals to the vehicle controller, including but not limited to: relay status, battery voltage, current, system On Chip (SOC), battery State of health (SOH). The vehicle controller sends control instructions to the current converter, including but not limited to: the operation mode request of the current transformer outputs a voltage/current request. The current controller reports information of the current controller to the whole vehicle controller, including but not limited to: output voltage, output current, mode of operation.
Optionally, the target state includes: a closed state, an open state, controlling a relay in a vehicle to be in a target state such that a motor in the vehicle is in a torque mode, comprising: the method comprises the steps of determining that a relay is a main positive relay, a main negative relay and a pre-charging relay, wherein the main positive relay is arranged between a positive electrode of a power battery and an inverter, the main negative relay is arranged between a negative electrode of the power battery and the inverter, and the pre-charging relay is connected with the main positive relay in parallel; the main positive relay and the main negative relay are controlled to be in a closed state, and the pre-charging relay is controlled to be in an open state, so that the motor is in a torque mode.
The main positive relay may be a switching device, which can switch under high voltage and high current, and can switch on or off the connection between the positive electrode and the negative electrode, so as to control the operation of the dc motor.
The main negative relay can be a device capable of cutting off the connection between the ground wire and the negative electrode, and the main negative relay is safer and more reliable when emergency stop devices are needed.
The pre-charge relay may be a protection relay, and when a large-sized dc motor is started, a transient phenomenon (i.e., impact) is generated at the input end of the pre-charge relay, if proper protection measures are not taken, the pre-charge relay may damage equipment or reduce service life, and the pre-charge relay outputs a smaller power to the motor before starting, and the full power is provided after the system is stabilized.
Among them, a main positive relay, a main negative relay, and a pre-charge relay are generally used to control a high-power direct current motor or other large-sized load devices.
In an alternative embodiment, the relays are a main positive relay, a main negative relay and a pre-charging relay, and if the vehicle is in a running state, the corresponding relay in the vehicle is controlled to be in a closed state, so that the motor is in a torque mode, the main positive relay and the main negative relay are required to be in the closed state, and the pre-charging relay is in an open state, so that the motor can be in the torque mode.
It should be noted that fig. 3 is a schematic diagram of an electrical topology circuit connection of an optional electric vehicle without a low-voltage storage battery according to an embodiment of the present application, and as shown in fig. 3, the diagram includes a power battery, a current converter, a low-voltage load, an inverter, a 1 pre-charging relay, a 2 main positive relay, a 3 main negative relay, a 4 pre-charging resistor, and a 5 motor capacitor. The power battery is directly connected with the current converter, the current converter is connected with the low-voltage load, the power battery is connected with an inverter (inverter) of the motor through various relays, the inverter is provided with a capacitor, and the main negative relay is connected with the negative electrode of the power battery and is arranged between the negative electrode of the power battery and the inverter; the main positive relay is connected with the positive electrode of the power battery and is arranged between the positive electrode of the power battery and the inverter, the pre-charging relay is connected with the main positive relay in parallel, and the pre-charging relay is connected with the pre-charging resistor in series. If the motor is in the torque mode, the main positive relay and the main negative relay are only required to be in a closed state, and the pre-charging relay is disconnected, so that the motor is in the torque mode, and power is provided for the vehicle.
Optionally, controlling the main positive relay and the main negative relay to be in a closed state and controlling the pre-charge relay to be in an open state so that the motor is in a torque mode includes: controlling the main negative relay to be in a closed state; controlling the pre-charge relay to be in a closed state in response to the main negative relay being in the closed state; controlling the main positive relay to be in a closed state in response to the pre-charging relay being in the closed state; in response to the main positive relay being in a closed state, the pre-charge relay is controlled to be in an open state such that a motor in the vehicle is in a torque mode.
In an alternative embodiment, if the main positive relay and the main negative relay are in the closed state and the pre-charge relay is in the open state. The vehicle controller controls the relay of the storage battery management system to be closed, and a certain switching sequence is needed, so that the safety of the storage battery management system is ensured. Firstly, the main negative relay needs to be in a closed state; after the main negative relay is successfully in the closed state, the pre-charging relay is further controlled to be in the closed state, after the pre-charging relay is successfully in the closed state, the main positive pre-charging relay is further controlled to be in the closed state, after the main positive relay is successfully closed, the pre-charging relay is controlled to be in the open state,
optionally, in response to the precharge relay being in a closed state, controlling the main positive relay to be in a closed state includes: in response to the pre-charging relay being in a closed state, pre-charging a motor capacitor connected in parallel on the inverter by using the power battery; and controlling the main positive relay to be in a closed state in response to receiving a charging end instruction of the motor capacitor.
The motor capacitor may be a capacitor in an ac motor for improved starting and operating efficiency. It is typically composed of two metal plates and an insulating medium, which can store electrical energy and release it when needed to help drive the motor. During start-up, it can reduce start-up time and energy consumption by providing additional torque to the rotor, and during operation, it can stabilize output power and reduce hunting phenomenon due to hunting.
In an alternative embodiment, the primary positive relay is controlled to be in a closed state after the pre-charge relay is in a closed state. After the pre-charging relay is in a closed state, a motor capacitor connected in parallel on the inverter is pre-charged by using the power battery. If the motor capacitor is charged successfully, a corresponding charging end instruction is sent to the whole vehicle controller, and the whole vehicle controller controls the pre-charging relay to be disconnected after receiving the charging end instruction.
FIG. 4 is a flow chart of an alternative vehicle power method according to an embodiment of the application, as shown in FIG. 4, with the method steps as follows:
step S401, determining whether the current vehicle state is a sleep state or an off state. If yes, go to step S402; if not, step S404 is performed.
In step S402, the current converter is controlled to operate in a low power mode in response to the vehicle current state being a sleep state or an off state.
Step S403, controlling the connection of the relay to enable the current converter to perform low-voltage power supply for the target load.
And step S404, controlling the working state of the current converter to be in a normal power consumption mode in response to the current state of the vehicle being a starting state or a criminal state.
Step S405, controlling the connection mode of the relay to make the motor in the torque mode.
Example 2
According to another aspect of the embodiments of the present application, a vehicle power supply system is provided, where the vehicle power supply method of the above embodiments may be executed, and the specific implementation method and the preferred application scenario are the same as those of the above embodiments, and are not described herein.
Fig. 5 is a schematic diagram of a vehicle power supply system according to an embodiment of the application. As shown in fig. 5, the system 50 may include: a current converter 51, a target load 52, a relay 53.
A current converter 51 connected to a power battery of the vehicle;
a target load 52 connected to the current converter;
a relay 53 is provided between the power battery and an inverter of the motor in the vehicle.
Optionally, the relay 53 includes: a main positive relay 531 provided between the positive electrode of the power battery and the inverter; a main negative relay 532 provided between the negative electrode of the power battery and the inverter; the precharge relay 533 is connected in parallel with the main positive relay.
Example 3
According to another aspect of the embodiments of the present application, a vehicle power supply device is provided, where the device may execute the vehicle power supply method in the foregoing embodiments, and the specific implementation manner and the preferred application scenario are the same as those of the foregoing embodiments, which are not described herein.
Fig. 6 is a schematic view of a vehicle power supply apparatus according to an embodiment of the present application, as shown in fig. 6, including the following parts: a first control module 60, a second control module 62.
The first control module 60 is configured to control the current converter in the vehicle to be in an operation mode corresponding to a preset state in response to receiving a control instruction that the vehicle enters the preset state, where the operation mode is configured to maintain a voltage of the current converter at a voltage required by a target load in the vehicle in the preset state, and the current converter is directly connected to a power battery in the vehicle;
a second control module 62 for controlling the current converter in the operating mode to supply power to the target load.
Optionally, the first control module includes: a first control unit for controlling the current converter in the vehicle to be in a low power consumption mode in response to receiving a control instruction that the vehicle enters a sleep state or an off state; and the second control unit is used for controlling the current converter in the vehicle to be in a normal power consumption mode in response to receiving a control instruction for the vehicle to enter a starting state or a driving state, wherein the power consumption of the current converter in the normal power consumption mode is larger than that of the current converter in the low power consumption mode.
Optionally, the first control module further comprises: a third control unit for controlling a relay in the vehicle to be in a target state so that a motor in the vehicle is in a torque mode, wherein the relay is provided between the power battery and an inverter of the motor; and a power supply unit for supplying power to the vehicle by using the motor in the torque mode.
Optionally, the third control unit includes: the first determining subunit is used for determining that the relay is a main positive relay, a main negative relay and a pre-charging relay, wherein the main positive relay is arranged between the positive electrode of the power battery and the inverter, the main negative relay is arranged between the negative electrode of the power battery and the inverter, and the pre-charging relay is connected with the main positive relay in parallel; and the first control subunit is used for controlling the main positive relay and the main negative relay to be in a closed state and controlling the pre-charging relay to be in an open state so as to enable the motor to be in a torque mode.
Optionally, the first control subunit comprises: controlling the main negative relay to be in a closed state; controlling the pre-charge relay to be in a closed state in response to the main negative relay being in the closed state; controlling the main positive relay to be in a closed state in response to the pre-charging relay being in the closed state; in response to the main positive relay being in a closed state, the pre-charge relay is controlled to be in an open state such that a motor in the vehicle is in a torque mode.
Optionally, the first control subunit further comprises: in response to the pre-charging relay being in a closed state, pre-charging a motor capacitor connected in parallel on the inverter by using the power battery; and controlling the main positive relay to be in a closed state in response to receiving a charging end instruction of the motor capacitor.
Example 4
According to another aspect of the embodiments of the present application, there is also provided a nonvolatile storage medium including a stored program, wherein the vehicle power supply method in the above-described embodiments is executed in a processor of a device where the program is controlled to run.
Example 5
According to another aspect of an embodiment of the present application, there is also provided a vehicle including: one or more processors; a storage means for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the vehicle power supply method in the above-described embodiment.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.

Claims (10)

1. A vehicle power supply method, characterized by comprising:
in response to receiving a control instruction of a vehicle entering a preset state, controlling a current converter in the vehicle to be in a working mode corresponding to the preset state, wherein the working mode is used for maintaining the voltage of the current converter at a voltage required by a target load in the vehicle in the preset state, and the current converter is directly connected with a power battery in the vehicle;
and controlling the current converter in the working mode to supply power to the target load.
2. The vehicle power supply method according to claim 1, characterized in that the preset state includes one of: the method for controlling the current converter in the vehicle to be in a power consumption mode corresponding to the preset state comprises the following steps of:
controlling the current converter in the vehicle to be in a low power consumption mode in response to receiving a control instruction that the vehicle enters the sleep state or the off state;
and controlling the current converter in the vehicle to be in a normal power consumption mode in response to receiving a control instruction for the vehicle to enter the starting state or the running state, wherein the power consumption of the current converter in the normal power consumption mode is larger than that of the current converter in the low power consumption mode.
3. The vehicle power supply method according to claim 2, characterized in that in the case where the vehicle enters the running state, the method further includes:
controlling a relay in the vehicle to be in a target state so that a motor in the vehicle is in a torque mode, wherein the relay is disposed between the power battery and an inverter of the motor;
the vehicle is powered with the electric machine in the torque mode.
4. A vehicle power supply method according to claim 3, characterized in that the target state includes: a closed state, an open state, controlling a relay in the vehicle to be in a target state such that a motor in the vehicle is in a torque mode, comprising:
determining the relay as a main positive relay, a main negative relay and a pre-charging relay, wherein the main positive relay is arranged between the positive electrode of the power battery and the inverter, the main negative relay is arranged between the negative electrode of the power battery and the inverter, and the pre-charging relay is connected with the main positive relay in parallel;
and controlling the main positive relay and the main negative relay to be in a closed state, and controlling the pre-charging relay to be in an open state so that the motor is in the torque mode.
5. The vehicle power supply method according to claim 4, characterized by controlling the main positive relay and the main negative relay to be in a closed state and controlling the precharge relay to be in an open state so that the motor is in the torque mode, comprising:
controlling the main negative relay to be in the closed state;
controlling a pre-charge relay to be in the closed state in response to the main negative relay being in the closed state;
controlling the main positive relay to be in the closed state in response to the pre-charge relay being in the closed state;
in response to the main positive relay being in the closed state, the pre-charge relay is controlled to be in the open state such that a motor in the vehicle is in the torque mode.
6. The vehicle power supply method according to claim 5, characterized by controlling the main positive relay in the closed state in response to the precharge relay being in the closed state, comprising:
in response to the pre-charge relay being in the closed state, pre-charging a motor capacitor connected in parallel on the inverter by using the power battery;
and controlling the main positive relay to be in the closed state in response to receiving a charging end instruction of the motor capacitor.
7. A vehicle power supply system, characterized by comprising:
the current converter is connected with a power battery of the vehicle;
a target load connected to the current converter;
and a relay provided between the power battery and an inverter of a motor in the vehicle.
8. The vehicle power supply system according to claim 7, characterized by a relay comprising:
the main positive relay is arranged between the positive electrode of the power battery and the inverter;
a main negative relay arranged between the negative electrode of the power battery and the inverter;
and the pre-charging relay is connected with the main positive relay in parallel.
9. A non-volatile storage medium, characterized in that the non-volatile storage medium comprises a stored program, wherein the program, when run, controls the execution of the vehicle power supply method according to any one of claims 1 to 7 in a processor of a device in which the program is located.
10. A vehicle, characterized by comprising:
one or more processors;
a storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to perform the vehicle power supply method of any one of claims 1 to 7.
CN202310595860.3A 2023-05-24 2023-05-24 Vehicle power supply method and system, nonvolatile storage medium and vehicle Pending CN116674424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310595860.3A CN116674424A (en) 2023-05-24 2023-05-24 Vehicle power supply method and system, nonvolatile storage medium and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310595860.3A CN116674424A (en) 2023-05-24 2023-05-24 Vehicle power supply method and system, nonvolatile storage medium and vehicle

Publications (1)

Publication Number Publication Date
CN116674424A true CN116674424A (en) 2023-09-01

Family

ID=87780196

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310595860.3A Pending CN116674424A (en) 2023-05-24 2023-05-24 Vehicle power supply method and system, nonvolatile storage medium and vehicle

Country Status (1)

Country Link
CN (1) CN116674424A (en)

Similar Documents

Publication Publication Date Title
CN110040038B (en) Energy management control method and system for hydrogen-electricity hybrid fuel cell passenger car
CN113459810B (en) Power-off control method based on full-power electricity-electricity hybrid fuel cell automobile
US9834113B2 (en) Battery charging system with an on-board charger
JP4020646B2 (en) Control method of hybrid electric vehicle
CN114290916B (en) Energy management method and system for hydrogen fuel hybrid power heavy truck
CN111251910B (en) Power-on starting method of fuel cell automobile dual-source hybrid power system
CN112677781B (en) Hybrid power supply system based on fuel cell and energy storage battery and automobile
US10804815B1 (en) DC/AC inverter system supplied by integrated power networks to increase output power with robust auto stop control
EP4163148A1 (en) Method and apparatus for controlling charging, powering on and powering off of electric vehicle, and electric vehicle
CN113071377A (en) Power supply power distribution method based on running state of hybrid electric vehicle
KR101551086B1 (en) Emergency Power supply system using fuelcell
CN205395802U (en) Fuel cell and energy storage battery hybrid vehicle system
CN110549867A (en) Dual-mode automatic switching control method of hydrogen fuel cell vehicle
CN111976704A (en) Control method, device and system of range-extending type electric automobile
CN102891524A (en) Battery charging system for vehicle and control method of the same
CN112319229B (en) Power-on control method based on electric motor coach dual-power driving system
CN113696748A (en) Fuel cell power supply system and control method and control device thereof
CN116674424A (en) Vehicle power supply method and system, nonvolatile storage medium and vehicle
CN113043848B (en) Fault control system and method for extended range fuel cell hybrid power system and vehicle
KR20110004192A (en) A solar cell system for a vehicle
CN111817417B (en) Charging method and device of lead-acid storage battery for 12V start and stop and vehicle
CN111211590B (en) Vehicle, composite power supply system and energy management method thereof
CN115742680B (en) Parking air conditioner power supply system and method of hybrid electric vehicle based on whole vehicle controller
CN207433187U (en) Parking energy-saving system of stacking machine
KR20090062700A (en) Power system of fuel cell-support energy hybrid vehicle and control method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination