CN110901466B - Charging control method and system of electric automobile and automobile - Google Patents

Charging control method and system of electric automobile and automobile Download PDF

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Publication number
CN110901466B
CN110901466B CN201911315279.1A CN201911315279A CN110901466B CN 110901466 B CN110901466 B CN 110901466B CN 201911315279 A CN201911315279 A CN 201911315279A CN 110901466 B CN110901466 B CN 110901466B
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state
charging
vehicle
charge
full
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CN110901466A (en
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刘星源
唐天禹
胡磊
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Dongfeng Motor Co Ltd
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Dongfeng Motor Co Ltd
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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
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12—Remote or cooperative charging

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a charging control method, a charging control system and an automobile of an electric automobile, wherein the method comprises the steps of responding to a power supplementing request sent by a user terminal after detecting that the voltage of a single battery reaches a preset charging voltage value, switching a charging mark state from a full state to a to-be-full state, and controlling the automobile to enter the charging state again; and when the voltage of the single battery is detected to reach the preset charging voltage value again, switching the state of the charging mark from the state to be fully charged to the state to be fully charged, and controlling the vehicle to stop charging. The embodiment of the invention can realize the electricity supplementing function of the vehicle to increase the endurance mileage, can effectively avoid frequent electricity supplementing, can realize remote electricity supplementing by one key through the user terminal before the vehicle is used by a user, and fully utilizes the idle time to supplement electricity.

Description

Charging control method and system of electric automobile and automobile
Technical Field
The invention relates to the technical field of batteries, in particular to a charging control method and a charging control system for an electric automobile and the automobile.
Background
For charging the battery of a vehicle, the existing charging control strategy is as follows:
strategy one: and judging whether the vehicle continues to be charged according to the SOC, when the SOC is smaller than a certain value, clearing 0 a full charge flag bit, when the maximum monomer voltage of the battery pack reaches a certain value, determining that the battery pack is fully charged, and at the moment, controlling the whole vehicle to stop charging by the battery management system at the full charge flag bit 1. After the charging is stopped, the electric quantity in the battery pack is balanced, so that the voltage of the single battery is reduced, the actual battery pack is not fully charged, the SOC is still 100%, the full-charge flag bit cannot be cleared 0, and the vehicle cannot be charged.
And (2) strategy two: on the basis of the first strategy, the battery pack is charged continuously after the electric quantity is balanced and the charging is finished, namely, the power is supplemented, and the method is suitable for scenes with high requirements on endurance mileage. But the second strategy is that after the vehicle is dormant, the battery management system clears the full charge flag bit, if the charge gun is not removed, the vehicle is waken up each time and automatically enters the charge again, and the trouble is caused to the user by frequent power supply,
therefore, the vehicle adopting the first strategy does not have the function of 'power supplement', and the vehicle adopting the second strategy causes frequent 'power supplement', so that troubles are brought to users.
Disclosure of Invention
The invention provides a charging control method and a charging control system of an electric automobile and the automobile, which are used for solving the technical problem that the existing vehicle charging control strategy has defects.
In order to solve the above technical problem, an embodiment of the present invention provides a charging control method for an electric vehicle, which at least includes the following steps:
when the voltage of the single battery reaches a preset charging voltage value, responding to a power supplementing request sent by a user terminal, switching the charging mark state from a full-charging state to a to-be-full-charging state, and controlling the vehicle to enter the charging state again;
and when the voltage of the single battery is detected to reach the preset charging voltage value again, switching the state of the charging mark from the state to be fully charged to the state to be fully charged, and controlling the vehicle to stop charging.
In one embodiment, before the steps of switching the state of the charge flag from the full charge state to the to-be-full charge state and controlling the vehicle to enter the charge state again in response to a power supplement request sent by the user terminal after detecting that the voltage of the single battery reaches the preset charge voltage value, the method further includes:
receiving a power supplementing request transmitted by a user terminal forwarded by a real-time monitoring system;
and forwarding the power supplementing request to a battery management system.
In one embodiment, the method further comprises:
when the voltage of the single battery reaches a preset charging voltage value, switching the charging sign state from a to-be-fully-charged state to a fully-charged state, and controlling the vehicle to stop charging and enter a dormant state;
when the vehicle is awakened from the dormant state, judging whether the charge state of the battery is smaller than a preset charge state value;
and when the state of charge of the battery is judged to be smaller than the preset state of charge value, switching the state of the charging mark from a full state to a state to be fully charged, and controlling the vehicle to enter the charging state again.
In one embodiment, the preset state of charge value is configured as an adjustable threshold.
In one embodiment, when the charging flag state is a to-be-fully-charged state, the fully-charged flag bit is 0; and when the charging flag state is a full-charging state, the full-charging flag bit is 1.
The embodiment of the invention also provides a control system suitable for the charging control method of the electric automobile, which comprises the following steps:
the system comprises a vehicle control unit and a battery management system;
the battery management system is used for switching the charging mark state from a to-be-fully-charged state to a fully-charged state after detecting that the voltage of the single battery reaches a preset charging voltage value;
the vehicle control unit is used for responding to a power supplementing request sent by a user terminal, detecting whether the charging mark state is a to-be-fully-charged state or not, and controlling the vehicle to enter the charging state again when the charging mark state is the to-be-fully-charged state;
the battery management system is further used for switching the charging mark state from a full-charge state to a to-be-full-charge state according to the received power supplementing request, and switching the charging mark state from the to-be-full-charge state to the full-charge state after detecting that the voltage of the single battery reaches a preset charging voltage value again;
and the vehicle control unit is also used for controlling the vehicle to stop charging after the charging mark state is a full state.
In one embodiment, the control system further comprises: a real-time monitoring system;
the real-time monitoring system is used for receiving a power supplementing request sent by a user terminal and forwarding the power supplementing request to the vehicle control unit.
In one embodiment, the vehicle control unit is further configured to:
after the charging mark state is a full state, controlling the vehicle to stop charging and enter a dormant state;
the battery management system is further configured to:
when the vehicle is awakened from the dormant state, judging whether the charge state of the battery is smaller than a preset charge state value;
when the state of charge of the battery is judged to be smaller than a preset state of charge value, switching the state of the charging mark from a full state to a state to be full;
the vehicle control unit is further configured to:
and after the state of the charging mark is switched from a full state to a state to be fully charged, controlling the vehicle to enter the charging state again.
In one embodiment, the preset state of charge value is configured as an adjustable threshold.
The embodiment of the invention also provides an automobile which comprises the control system, and the control system executes the charging control method.
To sum up, the embodiment of the invention provides a charging control method and a charging control system for an electric vehicle and the vehicle, and any embodiment of the invention has the following beneficial effects:
when the voltage of the single battery reaches a preset charging voltage value, responding to a power supplementing request sent by a user terminal, switching the charging mark state from a full-charging state to a to-be-full-charging state, and controlling the vehicle to enter the charging state again; and when the voltage of the single battery is detected to reach the preset charging voltage value again, switching the state of the charging mark from the state to be fully charged to the state to be fully charged, and controlling the vehicle to stop charging. After the first charging is finished, the vehicle controller is awakened according to a power supplementing request sent by a user through a user terminal, the state of a charging mark is switched from a full-charging state to a to-be-full-charging state through a battery management system by the vehicle controller, and the vehicle is controlled to enter the charging state again to realize the power supplementing till the vehicle is fully charged again. By means of the RTM system of the vehicle, the electricity supplementing function of the vehicle can be achieved to increase the endurance mileage, frequent electricity supplementing can be effectively avoided, a user can conduct remote electricity supplementing through a user terminal before using the vehicle, and the idle time is fully utilized to supplement electricity.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a charging control method for an electric vehicle according to an embodiment of the present invention;
fig. 2 is a flowchart of a charging control method for an electric vehicle according to an embodiment of the present invention;
fig. 3 is a flowchart of a charging control method for an electric vehicle according to an embodiment of the present invention;
fig. 4 is a flowchart of a charging control method of an electric vehicle in the embodiment of the invention;
fig. 5 is a schematic structural diagram of a control system of a charging control method for an electric vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
Referring to fig. 1, a preferred embodiment of the present invention provides a charging control method for an electric vehicle, which at least includes the following steps:
s101, after detecting that the voltage of the single battery reaches a preset charging voltage value, responding to a power supplementing request sent by a user terminal, switching the charging mark state from a full-charging state to a to-be-full-charging state, and controlling the vehicle to enter the charging state again;
and S102, when the voltage of the single battery is detected to reach the preset charging voltage value again, switching the state of the charging mark from the state to be fully charged to the state to be fully charged, and controlling the vehicle to stop charging.
In this embodiment, after the first charging is completed, the vehicle controller is awakened according to a power supplement request sent by a user through a user terminal, the vehicle controller switches the charging flag state from the full-charge state to the to-be-full-charge state through the battery management system, and controls the vehicle to enter the charging state again, so that the "power supplement" is realized until the vehicle is fully charged again. By means of the RTM system of the vehicle, the electricity supplementing function of the vehicle can be achieved to increase the endurance mileage, frequent electricity supplementing can be effectively avoided, a user can conduct remote electricity supplementing through a user terminal before using the vehicle, and the idle time is fully utilized to supplement electricity.
When the charging flag state is a to-be-fully-charged state, the fully-charged flag bit of the automobile is 0; and when the charging mark state is a full-charging state, the full-charging mark bit of the automobile is 1. In the charging process, when the voltage of the single battery reaches a preset charging voltage value, the battery management system fully charges the mark position 1 and stops charging, then the electric quantity inside the battery pack is balanced, so that the voltage of the single battery is reduced, but the fully charged mark position is still 1, and the whole vehicle controller enters a dormant state.
Referring to fig. 2, in one embodiment, before the step S101, after detecting that the voltage of the battery cell reaches the preset charging voltage value, responding to a power supplement request sent by the user terminal, switching the state of the charging flag from the full-charge state to the to-be-full-charge state, and controlling the vehicle to enter the charging state again, the method further includes:
s110, receiving a power supplementing request transmitted by a user terminal forwarded by a real-time monitoring system; and forwarding the power supplementing request to a battery management system.
In this embodiment, it should be noted that the real-time monitoring system is an RTM system applied to an automobile, and is capable of performing remote communication with a user terminal. Because the power supplementing time is about several minutes basically, as shown in fig. 4, a user sends a power supplementing request to the RTM system remotely through the user terminal in advance at a corresponding time, and the RTM system responds to the request of the user terminal and wakes up the vehicle controller, wherein the RTM system sends the power supplementing request to the CAN network, so that the power supplementing request is forwarded to the vehicle controller VCM and the battery management system BMS, and the vehicle controller clears 0 the flag bit according to the power supplementing request, so that the vehicle enters the power supplementing state until the vehicle is fully charged again. The RTM system is used as a technology which is applied more in the automobile industry, such as remote start of a vehicle, remote air conditioner start, and the like, and the RTM system and the vehicle controller communicate with each other through a CAN signal. The user terminal may be a computer, a mobile phone, a mobile computer, or other tool capable of performing remote communication with the RTM.
Therefore, the user can remotely send the vehicle interconnection APP through the mobile phone client, and send the electricity supplementing request through the one-key electricity supplementing button arranged on the mobile phone-vehicle interconnection APP. When a user uses the vehicle or seeks the vehicle, and the vehicle is fully charged at the moment, the user can operate the button to send a remote instruction to the RTM, so that the vehicle is awakened, the fully-charged flag bit is cleared to 0, and the vehicle controller controls the vehicle to enter a charging state again until the battery is fully charged again.
Referring to fig. 3, in one embodiment, the method further includes:
s103, when the voltage of the single battery reaches a preset charging voltage value, switching the charging sign state from a to-be-charged state to a charged state, and controlling the vehicle to stop charging and enter a dormant state;
s104, judging whether the charge state of the battery is smaller than a preset charge state value or not after the vehicle is awakened from the sleep state;
and S105, when the state of charge of the battery is judged to be smaller than the preset state of charge value, switching the state of the charging mark from a full state to a state to be full, and controlling the vehicle to enter the charging state again.
The vehicle controller is awakened, and is different from the one-key power supplement of a user, namely the user normally awakens the vehicle under the condition that the power supplement request is not sent, for example, the user unlocks the vehicle through a key unlocking key when using the vehicle, the whole vehicle is awakened at the moment, and a BMS system judges whether to clear a full charge zone bit according to whether the SOC reaches a preset SOC value or not after awakening the vehicle.
For example, the preset soc value may be configured as an adjustable threshold, and in one possible embodiment, the preset soc value is selected to be 99.5%.
In this embodiment, after the battery management system (BMS system) determines that the vehicle is fully charged, the full charge flag position 1 is set, at this time, the vehicle controller controls to stop charging, the vehicle also enters a sleep state, and the user can know the current vehicle state transmitted by the RTM through the mobile phone APP.
In summary, according to the charging control method for the electric vehicle provided by the present invention, after the Battery Management System (BMS) determines that the battery pack is fully charged, the Battery Management System (BMS) sets the full charge flag to 1, and the vehicle controller controls the end of charging and enters the vehicle sleep state. When the vehicle wants to be charged again, the full charge flag must be cleared by 0, and the two conditions for clearing 0 are as follows:
firstly, the charging state is entered again by judging that the SOC of the battery is smaller than a preset SOC value.
And secondly, the user sends a one-key power supplementing command, the vehicle controller is awakened through the RTM system and the command is transmitted to the vehicle controller, and the battery management system clears the full-charge flag bit to 0 and enters the charging state again.
Corresponding to the above charging control method for the electric vehicle, an embodiment of the present invention further provides a control system suitable for the above charging control method for the electric vehicle, as shown in fig. 5, including a vehicle management unit (VCM) and a battery management system (BMS system);
the battery management system is used for switching the charging mark state from a to-be-fully-charged state to a fully-charged state after detecting that the voltage of the single battery reaches a preset charging voltage value;
the vehicle control unit is used for responding to a power supplementing request sent by a user terminal, detecting whether the charging mark state is a to-be-fully-charged state or not, and controlling the vehicle to enter the charging state again when the charging mark state is the to-be-fully-charged state;
the battery management system is further used for switching the charging mark state from a full-charge state to a to-be-full-charge state according to the received power supplementing request, and switching the charging mark state from the to-be-full-charge state to the full-charge state after detecting that the voltage of the single battery reaches a preset charging voltage value again;
and the vehicle control unit is also used for controlling the vehicle to stop charging after the charging mark state is a full state.
In one embodiment, the control system further includes a real-time monitoring system, which is also the RTM system described above;
the real-time monitoring system is used for receiving a power supplementing request sent by a user terminal and forwarding the power supplementing request to the vehicle control unit.
It should be noted that, after the RTM system responds to the power supply request sent by the user terminal, the RTM system sends the power supply request to the CAN network of the automobile, so that the vehicle controller VCM and the battery management system BMS CAN receive the power supply request from the CAN network.
In one embodiment, the vehicle control unit is further configured to:
after the charging mark state is a full state, controlling the vehicle to stop charging and enter a dormant state;
the battery management system is further configured to:
when the vehicle is awakened from the dormant state, judging whether the charge state of the battery is smaller than a preset charge state value;
when the state of charge of the battery is judged to be smaller than a preset state of charge value, switching the state of the charging mark from a full state to a state to be full;
the vehicle control unit is further configured to:
and after the state of the charging mark is switched from a full state to a state to be fully charged, controlling the vehicle to enter the charging state again.
In one embodiment, the preset soc value is configured as an adjustable threshold, and in one possible embodiment, the preset soc value is selected to be 99.5%.
In this embodiment, it can be understood that, when the control system executes the charging control method, when the vehicle is charged fully for the first time and enters the vehicle sleep state, the charging gun is still in the connected state.
Referring to fig. 5, the real-time monitoring system (RTM system), the Vehicle Controller (VCM), and the battery management system (BMS system) are mounted on the same CAN, and the association and function of the three structures are described as follows:
the real-time detection system (RTM system) is used for acquiring a one-key electricity supplementing request sent by a user client APP after a vehicle is fully charged and sleeps, awakening the whole vehicle after responding to the electricity supplementing request sent by a user terminal, and sending the electricity supplementing request to a whole Vehicle Controller (VCM) through a CAN network, so that the whole vehicle controller forwards the electricity supplementing request to the battery management system.
And the Battery Management System (BMS) is used for resetting the full-charge flag position 1 after detecting that the voltage of the single battery reaches a preset charging voltage value, and then resetting the full-charge flag position according to the fact that the vehicle control unit (VCM) receives a power supplementing request.
The vehicle control unit (VCM) is used for controlling to stop charging after knowing that the Battery Management System (BMS) fully charges the mark position 1; and after the fact that the Battery Management System (BMS) clears the full-charge flag bit to 0, judging whether the vehicle meets the charging condition, and if so, controlling the vehicle to enter a charging state.
The embodiment of the invention also provides an automobile which comprises the control system, and the control system can execute the charging control method.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A charging control method of an electric vehicle is characterized by at least comprising the following steps:
when the voltage of the single battery reaches a preset charging voltage value, switching the charging mark state from a to-be-fully-charged state to a fully-charged state and stopping charging, and keeping the charging mark state to be fully-charged when the electric quantity in the battery pack is balanced;
responding to a power supplementing request sent by a user terminal, switching the state of the charging mark from a full state to a state to be fully charged, and controlling the vehicle to enter the charging state again;
and when the voltage of the single battery is detected to reach the preset charging voltage value again, switching the state of the charging mark from the state to be fully charged to the state to be fully charged, and controlling the vehicle to stop charging.
2. The method for controlling charging of an electric vehicle according to claim 1, wherein before the steps of switching the charging flag state from the full-charge state to the to-be-full-charge state and controlling the vehicle to enter the charging state again in response to a power supplement request sent by the user terminal after detecting that the voltage of the battery cell reaches the preset charging voltage value, the method further comprises:
receiving a power supplementing request transmitted by a user terminal forwarded by a real-time monitoring system;
and forwarding the power supplementing request to a battery management system.
3. The charge control method of an electric vehicle according to claim 1, characterized by further comprising:
when the voltage of the single battery reaches a preset charging voltage value, switching the charging sign state from a to-be-fully-charged state to a fully-charged state, and controlling the vehicle to stop charging and enter a dormant state;
when the vehicle is awakened from the dormant state, judging whether the charge state of the battery is smaller than a preset charge state value;
and when the state of charge of the battery is judged to be smaller than the preset state of charge value, switching the state of the charging mark from a full state to a state to be fully charged, and controlling the vehicle to enter the charging state again.
4. The method according to claim 1, wherein the preset soc value is configured as an adjustable threshold.
5. The charge control method of an electric vehicle according to claim 1, wherein when the charge flag state is a to-be-fully-charged state, the fully-charged flag bit is 0; and when the charging flag state is a full-charging state, the full-charging flag bit is 1.
6. A control system adapted to the charging control method for the electric vehicle according to claim 1, comprising a vehicle control unit and a battery management system;
the battery management system is used for switching the charging mark state from a to-be-fully-charged state to a fully-charged state and stopping charging after detecting that the voltage of the single battery reaches a preset charging voltage value, and keeping the charging mark state to be fully-charged when the electric quantity in the battery pack is balanced;
the vehicle control unit is used for responding to a power supplementing request sent by a user terminal, detecting whether the charging mark state is a to-be-fully-charged state or not, and controlling the vehicle to enter the charging state again when the charging mark state is the to-be-fully-charged state;
the battery management system is further used for switching the charging mark state from a full-charge state to a to-be-full-charge state according to the received power supplementing request, and switching the charging mark state from the to-be-full-charge state to the full-charge state after detecting that the voltage of the single battery reaches a preset charging voltage value again;
and the vehicle control unit is also used for controlling the vehicle to stop charging after the charging mark state is a full state.
7. The control system of claim 6, further comprising a real-time monitoring system;
the real-time monitoring system is used for receiving a power supplementing request sent by a user terminal and forwarding the power supplementing request to the vehicle control unit.
8. The control system of claim 6,
the vehicle control unit is further configured to:
after the charging mark state is a full state, controlling the vehicle to stop charging and enter a dormant state;
the battery management system is further configured to:
when the vehicle is awakened from the dormant state, judging whether the charge state of the battery is smaller than a preset charge state value;
when the state of charge of the battery is judged to be smaller than a preset state of charge value, switching the state of the charging mark from a full state to a state to be full;
the vehicle control unit is further configured to:
and after the state of the charging mark is switched from a full state to a state to be fully charged, controlling the vehicle to enter the charging state again.
9. The control system of claim 8, wherein the predetermined state of charge value is configured as an adjustable threshold.
10. An automobile characterized by comprising the control system according to any one of claims 6 to 9, which executes the charge control method according to any one of claims 1 to 5.
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