CN117445754A - Electric energy anti-theft method and device for electric automobile - Google Patents

Electric energy anti-theft method and device for electric automobile Download PDF

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Publication number
CN117445754A
CN117445754A CN202311346595.1A CN202311346595A CN117445754A CN 117445754 A CN117445754 A CN 117445754A CN 202311346595 A CN202311346595 A CN 202311346595A CN 117445754 A CN117445754 A CN 117445754A
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CN
China
Prior art keywords
voltage value
electric automobile
electric
vehicle
condition
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
CN202311346595.1A
Other languages
Chinese (zh)
Inventor
张家畅
张玉龙
贾卫平
李俊
周林
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.)
Zhejiang Geely Holding Group Co Ltd
Radar New Energy Vehicle Zhejiang Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Radar New Energy Vehicle Zhejiang Co Ltd
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 Zhejiang Geely Holding Group Co Ltd, Radar New Energy Vehicle Zhejiang Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN202311346595.1A priority Critical patent/CN117445754A/en
Publication of CN117445754A publication Critical patent/CN117445754A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • 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
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage

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

Abstract

The specification provides an electric energy anti-theft method and device for an electric automobile, wherein the method comprises the following steps: under the condition that the target equipment is in communication connection with the electric automobile through the charging gun and operates, a first voltage value of the vehicle-mounted battery is recorded; recording a second voltage value of the vehicle-mounted battery under the condition that the time point for recording the first voltage value is longer than a preset time length; and under the condition that the first voltage value is larger than the second voltage value, determining that the electric automobile is in an illegal discharge state currently.

Description

Electric energy anti-theft method and device for electric automobile
Technical Field
The invention relates to the field of automobiles, in particular to an electric energy anti-theft method and device for an electric automobile.
Background
Along with the increasing of the electric automobile in the domestic market, more and more users choose to drive the electric automobile to go out, wherein, the user can generally obtain the required electricity of above-mentioned electric equipment from the electric automobile through the mode of simulating the electricity taking interface of electric equipment as national standard charging interface to save the loaded down with trivial details step of carrying extra power in user's the trip process. However, due to the mixed use of the interfaces corresponding to the national standard charging interfaces, the electric automobile cannot judge whether the equipment connected through the charging gun is electric equipment or power supply equipment, and further the hidden trouble that lawless persons access the electric automobile by using the electric equipment to steal electric energy from the vehicle-mounted battery exists.
Disclosure of Invention
In view of the above, the present invention provides an electric energy anti-theft method and device for an electric automobile, so as to solve the deficiencies in the related art.
Specifically, the invention is realized by the following technical scheme:
according to a first aspect of the present invention, there is provided an electric energy theft prevention method for an electric vehicle, the method comprising: under the condition that the target equipment is in communication connection with the electric automobile through the charging gun and operates, a first voltage value of the vehicle-mounted battery is recorded;
recording a second voltage value of the vehicle-mounted battery under the condition that the time point for recording the first voltage value is longer than a preset time length;
and under the condition that the first voltage value is larger than the second voltage value, determining that the electric automobile is in an illegal discharge state currently.
According to a second aspect of the present invention, there is provided an electric energy theft prevention device for an electric vehicle, the device comprising:
the first voltage value acquisition unit is used for recording a first voltage value of the vehicle-mounted battery under the condition that the target equipment is connected with the electric automobile through the charging gun and operates;
a second voltage value obtaining unit, configured to record a second voltage value of the vehicle-mounted battery when a time point for recording the first voltage value is greater than a preset duration;
the discharging state determining unit is used for determining that the electric automobile is in an illegal discharging state currently under the condition that the first voltage value is larger than the second voltage value.
According to a third aspect of embodiments of the present specification, there is provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method according to the first aspect.
According to a fourth aspect of embodiments of the present specification, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to the first aspect when the program is executed.
The technical scheme provided by the embodiment of the invention can comprise the following beneficial effects:
in the embodiment of the invention, the electric automobile can accurately judge that the electric automobile is in an illegal discharge state under the condition that the voltage value of the vehicle-mounted battery is reduced after the target equipment runs by recording the change of the voltage value of the vehicle-mounted battery after the target equipment is in communication connection with the electric automobile and runs; in other words, the technical scheme of the specification can help the electric automobile to judge whether the electric equipment is connected or not, and further potential safety hazards that electric energy of the electric automobile is stolen are avoided.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the following description will make a brief introduction to the drawings used in the description of the embodiments or the prior art. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic view of an electric energy anti-theft system of an electric vehicle according to an exemplary embodiment of the present disclosure;
fig. 2 is a schematic flow chart of an electric energy anti-theft method of an electric automobile according to an exemplary embodiment of the present disclosure;
fig. 3 is a flowchart illustrating another electric energy anti-theft method of an electric vehicle according to an exemplary embodiment of the present disclosure;
FIG. 4 is a schematic block diagram of an electronic device shown in an exemplary embodiment of the present disclosure;
fig. 5 is a schematic structural view of an electric energy anti-theft device for an electric vehicle according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the invention. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
An embodiment of an electric energy anti-theft method for an electric vehicle according to the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic architecture diagram of an electric energy anti-theft system of an electric vehicle according to an exemplary embodiment of the present disclosure, where, as shown in fig. 1, the system includes: target device 11 and electric vehicle 12.
The target device 11 is an electronic device that can be connected to the electric vehicle 12 to obtain electric power. In the running process of the system, the target equipment can simulate a digital communication protocol between a traditional off-vehicle conductive charger and the electric automobile, so that the electric automobile can identify the target equipment accessed through the charging gun as power supply equipment (even if the target equipment is actually electric equipment), and the communication connection between the target equipment and the electric automobile is established. When the communication connection is successfully established, the target device can be formally started and operated, for example, when the target device is used as a power supply device, electric energy is provided for charging the electric automobile, or when the target device is used as electric equipment, electric energy from the electric automobile is obtained to complete at least part of functions of the target device. Meanwhile, the following electric automobile can also acquire the running state of the target equipment in an active or passive mode through communication connection so as to record the voltage value of the vehicle-mounted battery at the corresponding moment in time. The electronic device may be any electronic product or battery having power taking capability or power supplying capability, and the present specification is not limited thereto.
The electric automobile 12 is a power supply device or an electric device of the target device. In the running process of the system, the electric automobile can provide electric energy of the vehicle-mounted battery for target equipment corresponding to communication connection or acquire electric energy from the target equipment to store the electric energy into the vehicle-mounted battery; and the first voltage value and the second voltage value of the vehicle-mounted battery at corresponding moments can be recorded respectively when the target equipment starts to operate and continuously operates for a preset period of time, and then the electric vehicle is judged to be in an illegal discharge state currently according to comparison of the first voltage value and the second voltage value, wherein if the first voltage value is judged to be greater than the second voltage value, the electric vehicle can be determined to be in the illegal discharge state currently. The electric energy of the in-vehicle battery may be uniformly managed by a battery management system (Battery Management System, BMS) in the electric vehicle or a third-party vehicle power management device, which is not limited in this specification.
Fig. 2 is a schematic flow chart of an electric energy anti-theft method of an electric automobile according to an exemplary embodiment of the present disclosure, and as shown in fig. 2, the method may include the following steps:
s201, under the condition that the target equipment is in communication connection with the electric automobile through the charging gun and operates, a first voltage value of the vehicle-mounted battery is recorded.
When the target device is connected with the electric automobile through the charging gun, the target device and the electric automobile can be connected in a communication mode based on a preset communication protocol (for example, national standard GB/T27930) so as to ensure normal transmission of subsequent electric energy between the target device and the electric automobile. Specifically, the charging gun in a connection manner between the target device and the electric automobile may be at least one set of cables with charging gun interfaces at two ends, and the target device and the electric automobile are connected to the charging gun interfaces respectively to realize the connection. When the target device is formally started, the electric vehicle may be notified in a form of a message or the like through a communication connection, or the electric vehicle initiates an inquiry to the target device through the communication connection, or, of course, the time point when the communication connection is established may be set as the time point when the target device starts to operate according to the actual use scenario and the difference of the target device, so that the BMS records the first voltage value of the vehicle-mounted battery at the time point when the target device starts to operate, where the present specification does not limit the recording position of the first voltage value and the second voltage value below, and the values may be stored in a persistent storage device or a non-persistent storage device preset in the electric vehicle or a cloud server associated with the electric vehicle. In addition, the charging gun may be a charging gun based on direct current or alternating current, which is not limited in this specification; the communication protocol can be adjusted according to the country and market region where the electric automobile is located, and the present disclosure is not limited thereto.
It should be noted that, the recording time point of the first voltage value may be designed to be earlier than the charging flow of the BMS (may represent the flow of formally starting power transmission between the target device and the electric vehicle), so as to ensure that the value of the first voltage value is not affected by the target device, and improve the accuracy of the comparison result of the subsequent first voltage value and the second voltage value.
S202, recording a second voltage value of the vehicle-mounted battery under the condition that the time point for recording the first voltage value is longer than a preset duration.
After the current time point has exceeded the preset time period from the time point of recording the first voltage value, the BMS of the electric vehicle may record the second voltage value of the vehicle-mounted battery again so as to compare with the first voltage value in the subsequent step. The time points can be uniformly counted and managed by the electric automobile, and the preset time length can be dynamically changed according to actual use scenes and dimensions, for example, when the electric automobile stays at a very common place or the time point used for the last time is longer than 2 hours, the preset time length can be appropriately shortened to further improve the judging efficiency of illegal discharge states, or the preset time length is appropriately prolonged to reduce equipment resources required by subsequent state determination.
Of course, in the technical solution of the present disclosure, the second voltage value of the vehicle-mounted battery may also be directly recorded, and in the subsequent step, a judgment logic for the preset duration may be additionally added, and the second voltage value recorded when the second voltage value is smaller than the preset duration is filtered, so that the recording timing of the second voltage value in the present disclosure is not particularly limited.
And S203, determining that the electric automobile is in an illegal discharge state currently under the condition that the first voltage value is larger than the second voltage value.
By comparing the values of the first voltage value and the second voltage value, the electric automobile can be determined to be in an illegal discharge state currently under the condition that the first voltage value is judged to be larger than the second voltage value; and under the condition that the first voltage value is smaller than the second voltage value, determining that the electric automobile is not in an illegal discharge state currently. The above-mentioned illegal discharging state can be understood as that the electric automobile unilaterally provides the electric energy of the vehicle-mounted battery for the target device under the condition that the electric automobile is not licensed by a user, so that the energy of the vehicle-mounted battery is stolen, the target device under the condition also determines to be used as electric equipment instead of power supply equipment, so that after the target device operates for a preset period of time, the first voltage value is reduced to a second voltage value (i.e. the first voltage value is greater than the second voltage value) due to the fact that the vehicle-mounted battery outputs at least a part of electric energy to the target device, and correspondingly, under the condition that the first voltage value is less than the second voltage value, the target device can be used as the power supply equipment to provide the electric energy for the electric automobile in the operation process, so that the first voltage value rises to the second voltage value (i.e. the second voltage value is greater than the first voltage value) due to the fact that the vehicle-mounted battery receives the target device outputs at least a part of electric energy after the target device operates for a preset period of time.
Further, the first voltage value may further include a first maximum voltage value and a first minimum voltage value, and the second voltage value may include a second maximum voltage value and a second minimum voltage value, and then the comparison between the first voltage value and the second voltage value may be converted into a comparison between the first maximum voltage value and the second maximum voltage value, and between the first minimum voltage value and the second minimum voltage value. Under the condition that the first maximum voltage value is larger than the second maximum voltage value and the first minimum voltage value is larger than the second minimum voltage value, the electric automobile can be determined to be in an illegal discharge state at present; and under the condition that the first maximum voltage value is less than the second maximum voltage value and/or the first minimum voltage value is less than the second minimum voltage value, determining that the electric automobile is not in an illegal discharge state currently. The reason for determining the state is basically identical to the comparison situation of the first voltage value and the second voltage value, and the difference is that the method can be applied to alternating current with more complex power supply situation, so that the electric automobile driven by the alternating current can judge whether the electric automobile is in an illegal discharge state or not.
Of course, the present specification also provides more refined execution logic for the comparison of the first voltage value and the second voltage value and the determination of the state, so as to reduce the misjudgment rate of the illegal discharge state.
In an embodiment, it may be determined that the electric vehicle is not currently in an illegal discharge state when the first voltage value is smaller than the second voltage value, or the first voltage value is larger than the second voltage value and the voltage difference is within a preset range. For the first case, as described above, it may be determined that the target device is a power supply device so that the electric vehicle is in a charging state; for the second case, there may be a target device that is a power supply device, but the power supply capability is smaller than the power consumption capability of the electric vehicle, so that the voltage value of the vehicle battery is in a decreasing trend after the target device is operated for a preset period of time (actually, the target device is not operated, which may cause a decreasing trend to be more obvious), and for this reason, the above preset range has the following effects: the electric automobile can be prevented from being misjudged to be in an illegal discharging state under the condition that the power consumption of high-power electric equipment (which is connected without depending on a charging gun) in the automobile is far higher than the power supplied by power supply equipment, and when the power consumption of the whole automobile is out of a preset range, the fact that additional electric equipment besides the high-power electric equipment in the automobile exists in the automobile is indicated to be in the power (namely target equipment) of using an on-board battery. In addition, the preset range can be determined to be a reasonable value according to the expected power of the high-power electric equipment in the vehicle, and the preset range is not limited in the specification.
When the BMS of the electric automobile determines that the electric automobile is in an illegal discharging state at present, the state can be displayed in a user terminal or a display screen of the electric automobile based on characters, images or audios and videos so as to prompt a user, and the user can know and confirm the situation based on a more efficient mode.
In an embodiment, when the electric automobile detects that the user is in the automobile, the stolen alarm information can be directly displayed in the central control display screen of the corresponding electric automobile, so that the user can quickly know and confirm the illegal discharge state in the automobile.
In another embodiment, when the user leaves the vehicle, the electric automobile can report the electric energy theft alarm information to the communication application of the user terminal through the remote communication terminal. The remote communication terminal may be implemented as a car networking intelligent terminal T-BOX (T-BOX), for example: when it is determined that the electric vehicle is currently in an illegal discharge state, the BMS of the electric vehicle may request the T-Box to transmit the electric power theft alarm information to a communication application (application) of the user terminal based on a vehicle remote service provider (Telematics Service Provider, TSP), so that the user can quickly understand and confirm the illegal discharge state in other area positions.
The above-mentioned electric energy theft alarm information may at least include any one of the following: the electric quantity change condition of the electric automobile, the establishment time, the duration time of the communication connection, or the device information of the target device, where the device information is provided by the target device based on the communication connection, and the content of the device information may correspond to a specific production type or a unique device identifier of the target device, for example, a Serial Number (SN) or a universal unique identification code (Universally Unique Identifier, UUID), which is not limited in this specification. The user may trigger the following discharge-allowing instruction or discharge-rejecting instruction to the user terminal based on the above respective contents.
In a partial implementation scenario, the technical scheme of the present disclosure further responds to the subsequent operation of the user while reporting the above-mentioned electric energy theft alarm information, so that the user may select different execution strategies for the above-mentioned electric energy theft alarm information.
In an embodiment, the electric automobile may continuously maintain the communication connection in response to an allowable discharge instruction triggered by the user terminal for the electric energy theft alarm information, so as to maintain the electric equipment to discharge the electric automobile; or, the electric automobile may close the communication connection in response to a discharge rejection instruction triggered by the user terminal for the electric energy theft alarm information, so as to stop the electric equipment from discharging the electric automobile. Of course, not triggering any instruction within a preset time period can also be regarded as a special case of triggering a discharge rejection instruction. For the first scenario, the method can be applied to a scenario in which a user actively uses a certain electric device under the condition of known risk, and for the second scenario, the method can be applied to a scenario in which the user is not aware of the connection of the corresponding electric automobile with other electric devices. In a word, the user can trigger different instructions by using the user terminal according to the actual scene where the user is located, and only the discharge condition of the electric automobile is ensured to meet the expectations.
In the above embodiment, each instruction may further include a continuous identifier, where the continuous identifier is used to indicate that the power theft alarm information corresponding to the target device remains executing the original instruction when the power theft alarm information is repeatedly reported in the following steps, so as to reduce repeated operations of the user and optimize operation experience. For example: under the condition that the discharge permission instruction contains a continuous permission mark, communication connection is permitted to be established within a preset duration, and the discharge state of the electric automobile is not determined any more; or under the condition that the continuous rejection mark is contained in the rejection discharging instruction, the communication connection can be refused to be established within the preset duration. The validity of the so-called persistent identifier may be determined by an option of the user terminal for the power theft alarm information (e.g. a selectable box control with text of "whether to maintain the same instruction for a subsequent period of time"), which is not limited in this specification. It should be noted that, the application scenario of the continuous identifier also has a certain limitation, for example, the differential processing cannot be performed on different target devices, so as to realize the control of the communication connection with any device connected to the electric automobile through the charging gun as much as possible. Of course, the present disclosure may also provide a default selection of setting the user terminal to implement a technical solution similar to the continuous identifier, for example, when the discharge permission instruction includes the continuous permission identifier, the relevant setting of the user terminal may be modified, so that the user terminal may replace the user to trigger the same instruction as before when the user terminal subsequently receives the electric energy theft alarm information of the same electric equipment.
The specification can also continuously record the voltage value of the vehicle-mounted battery so as to adapt to the functions of part of target equipment.
In an embodiment, the electric vehicle may record the latest voltage value of the vehicle-mounted battery periodically; and determining that the electric automobile is in an illegal discharge state at present under the condition that the last recorded voltage value is larger than the latest voltage value. In this embodiment, the target device may show the capability of the power supply device and the electric device respectively along with the change of the running time, so that the voltage value of the vehicle-mounted battery shows a trend of rising or falling in a continuous time period, for example, the electric vehicle sequentially records the first voltage value V1, the second voltage value V2 and the third voltage value V3 of the vehicle-mounted battery at times t1, t2 and t3, and V1> V2 and V2< V3, so that it can be simply understood that the target device in the period from t1 to t2 acts as the electric device, and the target device in the period from t2 to t3 acts as the power supply device, and the accuracy of the voltage value change condition can be improved by shortening the frequency recorded regularly, so that the condition that the electric vehicle is in an illegal discharge state due to the change of the function of the target device can be found more timely.
Taking an electric automobile as an example, a process of using electric energy of the electric automobile by electric equipment is described, and fig. 3 is a schematic diagram of another electric energy anti-theft method of the electric automobile according to an exemplary embodiment of the present disclosure, as shown in fig. 3, the process includes:
s301, the BMS performs communication interaction with the accessed direct current charging gun based on the national standard flow.
In an embodiment, it is assumed that the electric vehicle has a direct-current-based fast charging interface, and a target device is connected with a BMS of the electric vehicle through a direct-current charging gun, where the electric vehicle supports a national standard communication protocol "GB/T27930-2015", and the two establish communication connection based on the communication protocol.
S302, the BMS records the maximum voltage value Vmax1 and the minimum voltage value Vmin1 of the in-vehicle battery at time point t 1.
In an embodiment, after the communication connection is established, the BMS records the maximum voltage value Vmax1 and the minimum voltage value Vmin1 of the vehicle battery before formally entering the charging process.
S303, the BMS enters a national standard quick charging process.
In an embodiment, since the target device simulates the corresponding fast charging protocol, the power of the in-vehicle battery is obtained or the in-vehicle battery is provided with its own power when the BMS enters the national standard fast charging procedure.
S304, the BMS records a maximum voltage value Vmax2 and a minimum voltage value Vmin2 of the vehicle-mounted battery, and the recording time is greater than a preset time period from a time point at which the first voltage value is recorded.
In an embodiment, the BMS may record the second voltage value of the vehicle-mounted battery in case that the current time point is greater than a preset time period from the time point of recording the first voltage value.
S305, the BMS determines that Vmax 2< Vmax1 and Vmin 2< Vmin1.
In an embodiment, if Vmax2 is less than Vmax1 and Vmin2 is less than Vmin1, the BMS may determine that the target device is an electric device, and make the electric vehicle be in an illegal discharge state, and execute S307, or determine that the electric vehicle is not currently in the illegal discharge state, and execute S306.
S306, maintaining a fast charging flow.
In an embodiment, because it is determined that the electric vehicle is not currently in the illegal discharge state, the BMS determines that the external device is a power supply device or a powered device allowed by S308, and continues to maintain the fast charging process.
S307, the BMS reports the electric energy theft alarm information to the user terminal.
In an embodiment, assuming that the electric vehicle is currently in an illegal discharge state, the APP of the user terminal may be reported with an electric energy theft alarm message through the TBOX to request the user to confirm whether to continue discharge or power failure.
S308, judging whether an allowable discharge instruction of a user is received within a preset time period.
In an embodiment, assuming that the user terminal of the user triggers the discharge permission instruction for the above-mentioned power theft alarm information in time within a preset period of time (for example, 5 minutes), the BMS may execute S306 after receiving the discharge permission instruction;
in another embodiment, assuming that the user terminal of the user does not trigger any instruction or triggers a reject discharge instruction within a preset period of time, the BMS may perform S309 to stop the power supply of the electric vehicle to the powered device.
S309, stopping the discharge.
Fig. 4 is a schematic block diagram of an electronic device in an exemplary embodiment. Referring to fig. 4, at the hardware level, the electronic device includes a processor, an internal bus, a network interface, a memory, and a nonvolatile memory, and may include other required hardware. The processor reads the corresponding computer program from the nonvolatile memory to the memory and then operates the computer program to form the electric energy anti-theft device of the electric automobile on a logic level. Of course, other implementations, such as logic devices or combinations of hardware and software, are not excluded from the present description, that is, the execution subject of the following processing flows is not limited to each logic unit, but may be hardware or logic devices.
Corresponding to the foregoing embodiments of the electric energy anti-theft method for an electric automobile, the present specification also provides embodiments of an electric energy anti-theft device for an electric automobile.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electric energy anti-theft device of an electric vehicle according to an exemplary embodiment. As shown in fig. 5, the apparatus may include:
a first voltage value obtaining unit 501, configured to record a first voltage value of a vehicle-mounted battery when a target device is connected to the electric vehicle through a charging gun and operates;
a second voltage value obtaining unit 502, configured to record a second voltage value of the vehicle-mounted battery when a time point for recording the first voltage value is greater than a preset duration;
a discharge state determining unit 503, configured to determine that the electric vehicle is currently in an illegal discharge state when the first voltage value is greater than the second voltage value.
Optionally, the first voltage value includes a first maximum voltage value and a first minimum voltage value, and the second voltage value includes a second maximum voltage value and a second minimum voltage value; the first voltage value is greater than the second voltage value; the discharge state determining unit 503 specifically is configured to:
the first maximum voltage value is greater than the second maximum voltage value, and the first minimum voltage value is greater than the second minimum voltage value.
Optionally, the apparatus further includes:
a state reconfirming unit 504, configured to determine that the electric vehicle is not currently in an illegal discharge state when the first voltage value is smaller than the second voltage value, or the first voltage value is greater than the second voltage value and the voltage difference is within a preset range.
Optionally, a remote communication terminal is deployed in the electric automobile; the apparatus further comprises:
the alarm information reporting unit 505 is configured to report, through the remote communication terminal, the electric energy theft alarm information to the communication application of the user terminal, where the electric energy theft alarm information at least includes any one of the following: the voltage change condition of the vehicle-mounted battery, the operation time point, the duration time of the target equipment or the equipment information of the target equipment, wherein the equipment information is provided by the communication connection.
Optionally, the apparatus further includes:
a discharging control unit 506, configured to continuously maintain the communication connection in response to an allowable discharging instruction triggered by the user terminal for the electric energy theft alarm information, so as to maintain the target device to discharge the electric automobile; or,
and responding to a discharge refusing instruction triggered by a user aiming at the electric energy theft alarm information through the user terminal, closing the communication connection to stop the target equipment from discharging the electric automobile.
Optionally, the apparatus further includes:
a communication connection setting unit 507, configured to allow the establishment of the communication connection within a preset duration and to not determine a discharge state of the electric vehicle when the allowable discharge instruction includes a continuous allowable identifier;
and refusing to establish the communication connection within a preset duration under the condition that the refusing discharging instruction comprises a continuous refusing identifier.
Optionally, the apparatus further includes:
a periodic confirmation unit 508, configured to record the latest voltage value of the vehicle-mounted battery periodically;
and under the condition that the last recorded voltage value is larger than the latest voltage value, determining that the electric automobile is in an illegal discharge state currently.
The implementation process of the functions and roles of each unit in the above device is specifically shown in the implementation process of the corresponding steps in the above method, and will not be described herein again.
For the device embodiments, reference is made to the description of the method embodiments for the relevant points, since they essentially correspond to the method embodiments. The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purposes of the present description. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Embodiments of the subject matter and the functional operations described in this specification can be implemented in: digital electronic circuitry, tangibly embodied computer software or firmware, computer hardware including the structures disclosed in this specification and structural equivalents thereof, or a combination of one or more of them. Embodiments of the subject matter described in this specification can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a tangible, non-transitory program carrier for execution by, or to control the operation of, data processing apparatus. Alternatively or additionally, the program instructions may be encoded on a manually-generated propagated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode and transmit information to suitable receiver apparatus for execution by data processing apparatus. The computer storage medium may be a machine-readable storage device, a machine-readable storage substrate, a random or serial access memory device, or a combination of one or more of them.
The processes and logic flows described in this specification can be performed by one or more programmable computers executing one or more computer programs to perform corresponding functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).
Computers suitable for executing computer programs include, for example, general purpose and/or special purpose microprocessors, or any other type of central processing unit. Typically, the central processing unit will receive instructions and data from a read only memory and/or a random access memory. The essential elements of a computer include a central processing unit for carrying out or executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical disks, or optical disks, etc. However, a computer does not have to have such a device. Furthermore, the computer may be embedded in another device, such as a mobile phone, a Personal Digital Assistant (PDA), a mobile audio or video player, a game console, a Global Positioning System (GPS) receiver, or a portable storage device such as a Universal Serial Bus (USB) flash drive, to name a few.
Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices including, for example, semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal hard disk or removable disks), magneto-optical disks, and CD-ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.
While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features of specific embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. On the other hand, the various features described in the individual embodiments may also be implemented separately in the various embodiments or in any suitable subcombination. Furthermore, although features may be acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.
Similarly, although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system modules and components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.
Thus, particular embodiments of the subject matter have been described. Furthermore, the processes depicted in the accompanying drawings are not necessarily required to be in the particular order shown, or sequential order, to achieve desirable results. In some implementations, multitasking and parallel processing may be advantageous.
The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the scope of the disclosure, since any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.

Claims (10)

1. An electric energy anti-theft method for an electric automobile, the method comprising:
under the condition that the target equipment is in communication connection with the electric automobile through the charging gun and operates, a first voltage value of the vehicle-mounted battery is recorded;
recording a second voltage value of the vehicle-mounted battery under the condition that the time point for recording the first voltage value is longer than a preset time length;
and under the condition that the first voltage value is larger than the second voltage value, determining that the electric automobile is in an illegal discharge state currently.
2. The method of claim 1, wherein the first voltage value comprises a first maximum voltage value and a first minimum voltage value, and the second voltage value comprises a second maximum voltage value and a second minimum voltage value; the determining that the first voltage value is greater than the second voltage value includes:
and judging that the first maximum voltage value is larger than the second maximum voltage value, and the first minimum voltage value is larger than the second minimum voltage value.
3. The method according to claim 1, wherein the method further comprises:
and determining that the electric automobile is not in an illegal discharge state currently under the condition that the first voltage value is smaller than the second voltage value or the first voltage value is larger than the second voltage value and the voltage difference value is within a preset range.
4. The method of claim 1, wherein the electric vehicle has a remote communication terminal disposed therein; the method further comprises the steps of:
reporting electric energy theft alarm information to a communication application of a user terminal through a remote communication terminal, wherein the electric energy theft alarm information at least comprises any one of the following components: the voltage change condition of the vehicle-mounted battery, the operation time point, the duration time of the target equipment or the equipment information of the target equipment, wherein the equipment information is provided by the communication connection.
5. The method according to claim 4, wherein the method further comprises:
responding to an allowable discharge instruction triggered by the user terminal aiming at the electric energy theft alarm information, and continuing to maintain the communication connection so as to maintain the target equipment to discharge the electric automobile; or,
and responding to a discharge refusing instruction triggered by a user aiming at the electric energy theft alarm information through the user terminal, closing the communication connection to stop the target equipment from discharging the electric automobile.
6. The method of claim 5, wherein the method further comprises:
under the condition that the allowable discharge instruction comprises a continuous allowable mark, allowing the communication connection to be established within a preset duration, and determining the discharge state of the electric automobile;
and refusing to establish the communication connection within a preset duration under the condition that the refusing discharging instruction comprises a continuous refusing identifier.
7. The method according to claim 1, wherein the method further comprises:
the latest voltage value of the vehicle-mounted battery is recorded regularly;
and under the condition that the last recorded voltage value is larger than the latest voltage value, determining that the electric automobile is in an illegal discharge state at present.
8. An electric energy anti-theft device for an electric automobile, the device comprising:
the first voltage value acquisition unit is used for recording a first voltage value of the vehicle-mounted battery under the condition that the target equipment is connected with the electric automobile through the charging gun and operates;
a second voltage value obtaining unit, configured to record a second voltage value of the vehicle-mounted battery when a time point for recording the first voltage value is greater than a preset duration;
the discharging state determining unit is used for determining that the electric automobile is in an illegal discharging state currently under the condition that the first voltage value is larger than the second voltage value.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method according to any one of claims 1-7.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any one of claims 1-7 when the program is executed.
CN202311346595.1A 2023-10-17 2023-10-17 Electric energy anti-theft method and device for electric automobile Pending CN117445754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311346595.1A CN117445754A (en) 2023-10-17 2023-10-17 Electric energy anti-theft method and device for electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311346595.1A CN117445754A (en) 2023-10-17 2023-10-17 Electric energy anti-theft method and device for electric automobile

Publications (1)

Publication Number Publication Date
CN117445754A true CN117445754A (en) 2024-01-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN117445754A (en)

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