CN113135112A - Power-off control method, system, electronic device and storage medium - Google Patents
Power-off control method, system, electronic device and storage medium Download PDFInfo
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- CN113135112A CN113135112A CN202110422141.2A CN202110422141A CN113135112A CN 113135112 A CN113135112 A CN 113135112A CN 202110422141 A CN202110422141 A CN 202110422141A CN 113135112 A CN113135112 A CN 113135112A
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention discloses a power-off control method, a power-off control system, electronic equipment and a storage medium, which are applied to automobiles. The method comprises the following steps: acquiring a power-off request signal; detecting the working state of the automobile according to the power-off request signal; judging whether the working state of the automobile meets a power-off condition or not, and generating a judgment result; and controlling the automobile to carry out delayed power-off operation according to the judgment result and preset time. According to the embodiment of the application, the power battery relay is subjected to delayed power-off operation, so that the condition that a user mistakenly thinks that the vehicle breaks down due to hearing of abnormal sound when the power battery relay is disconnected is avoided.
Description
Technical Field
The present invention relates to the field of power down control technologies, and in particular, to a power down control method, system, electronic device, and storage medium.
Background
At present, a power-on and power-off function is added in a new energy automobile, namely, a driving part is controlled to enter or exit a working mode through a control strategy.
In the related art, in addition to causing each driving component to exit the working mode, the power battery relay needs to be controlled to be turned off so as to realize the high-voltage power-down of the whole power system. However, the power battery relay may generate abnormal noise when the contact is opened, which may interfere with the driving judgment and the vehicle performance judgment of the user.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a power-off control method which can carry out delayed power-off operation on the power battery relay, so that the condition that a user mistakenly thinks that the vehicle has a fault due to hearing abnormal sound when the power battery relay is disconnected is avoided.
The invention also provides a power-off control system for executing the power-off control method.
The power-off control method according to the embodiment of the first aspect of the invention is applied to an automobile, and includes: acquiring a power-off request signal; detecting the working state of the automobile according to the power-off request signal; judging whether the working state of the automobile meets a power-off condition or not, and generating a judgment result; and controlling the automobile to carry out delayed power-off operation according to the judgment result and preset time.
The power-off control method provided by the embodiment of the invention has at least the following beneficial effects: the working state of the automobile is detected and judged, and the power battery relay of the automobile is controlled to be powered off according to the judgment result and the preset time, so that a certain delay time exists between the time of receiving a power-off request signal and the time of controlling the automobile to finish power-off operation, the power battery relay is disconnected after a user leaves the automobile by utilizing the delay time, the condition that the user mistakenly thinks that the automobile is in fault due to hearing abnormal sound generated when the power battery relay is disconnected is avoided, and the interference influence on the driving judgment and the vehicle performance judgment of the user when the automobile is powered off is reduced. According to some embodiments of the invention, the controlling the automobile to perform the delayed power-off operation according to the judgment result and the preset time comprises: if the working state of the automobile meets the power-off condition, performing delayed power-off timing to obtain first timing time; if the first timing time is equal to the preset time, sending a first power-down control signal; and controlling a power battery relay of the automobile to be switched off according to the first power-down control signal.
According to some embodiments of the invention, the controlling the automobile to perform the delayed power-off operation according to the judgment result and the preset time comprises: if the working state of the automobile meets the power-off condition, sending a second power-off control signal; carrying out delayed power-off timing according to the second power-off control signal and obtaining second timing time; and if the second timing time is equal to the preset time, controlling a power battery relay of the automobile to be disconnected.
According to some embodiments of the invention, the detecting the operating state of the vehicle according to the power-off request signal comprises: detecting the engine state of the automobile according to the power-off request signal; detecting the state of a power component of the automobile according to the state of an engine of the automobile; and detecting the running state of the automobile according to the state of the power component of the automobile.
According to some embodiments of the invention, the detecting the running state of the automobile according to the state of the power component of the automobile includes: detecting the speed of the automobile according to the state of a power part of the automobile; and detecting the power supply current of the automobile according to the speed of the automobile.
According to some embodiments of the present invention, the controlling the automobile to perform the delayed powering-off operation according to the judgment result and the preset time further includes: and if the power supply current of the automobile does not meet the power-off condition, controlling a driving motor of the automobile to enter a short-circuit state.
According to some embodiments of the invention, the detecting the state of the power component of the automobile according to the state of the engine of the automobile comprises: detecting at least one of the following power component states based on the engine state of the vehicle: a drive motor state, a DCDC converter state, a power supply battery state, and a battery pack state.
A power distribution system according to an embodiment of a second aspect of the present invention is a power distribution system for performing a power distribution control method as described in any of the above embodiments, including: the VCU module is used for acquiring a power-off request signal, detecting the working state of the automobile according to the power-off request signal, judging whether the working state meets a power-off condition or not and generating a judgment result; a BMS module connected with the VCU module; the timing module is respectively connected with the VCU module and the BMS module and is used for carrying out delayed power-off timing and generating initial timing time; the VCU module is further used for controlling the BMS module to perform power-off operation according to the judgment result, preset time and the initial timing time; or the BMS module is used for performing power-off operation according to the preset time and the initial timing time.
An electronic device according to an embodiment of the third aspect of the present invention includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing: a method of controlling power down as described in any of the above embodiments.
A computer-readable storage medium according to an embodiment of the third aspect of the present invention stores computer-executable instructions for: a power down control method as described in any of the above embodiments is performed.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a flow chart of a power-down control method according to an embodiment of the present invention;
FIG. 2 is another schematic flow chart of a power-down control method according to an embodiment of the present invention;
FIG. 3 is another flow chart of the power-down control method according to the embodiment of the present invention;
FIG. 4 is another flow chart of the power-down control method according to the embodiment of the present invention;
FIG. 5 is another flow chart of the power-down control method according to the embodiment of the present invention;
fig. 6 is a block diagram of a power control system according to an embodiment of the present invention.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, an embodiment of the present application provides a power-off control method applied to an automobile. The method comprises the following steps: s110, acquiring a power-off request signal; s120, detecting the working state of the automobile according to the power-off request signal; s130, judging whether the working state of the automobile meets a power-off condition or not, and generating a judgment result; and S140, controlling the automobile to perform delayed order placing operation according to the judgment result and the preset time.
Specifically, a VCU (Vehicle Control Unit) module of the Vehicle acquires a power-off request signal triggered when a user presses a power-off button. The VCU module controls each detection device in the automobile to detect the working state of the automobile according to the ordering request signal so as to judge whether the current working state of the automobile meets the ordering condition. And powering off a power battery relay of the automobile within preset time according to the judgment result of the working state, so that delayed powering off of an automobile power system is realized. It can be understood that the length of the preset time may be adaptively set according to actual needs, and the embodiment of the present application is not particularly limited.
According to the ordering control method provided by the embodiment of the application, the working state of the automobile is detected and judged, and the power battery relay of the automobile is controlled to be powered off according to the judgment result and the preset time, so that a certain delay time exists between the time of receiving a power-off request signal and the time of controlling the automobile to finish power-off operation, the power battery relay is disconnected after a user leaves the automobile by utilizing the delay time, the condition that the user mistakenly thinks that the automobile has a fault due to hearing abnormal sound when the power battery relay is disconnected is avoided, and the interference influence on the driving judgment and the vehicle performance judgment of the user when the automobile is powered off is reduced.
However, step S140 includes two possible embodiments, which will be described below.
Referring to fig. 2, in some embodiments, step S140 includes: s210, if the working state of the automobile meets a power-off condition, performing delayed power-off timing to obtain first timing time; s220, if the first timing time is equal to the preset time, sending a first power-down control signal; and S230, controlling the power battery relay of the automobile to be disconnected according to the first power-off control signal.
Specifically, when the detected working state of the automobile meets the power-off condition, the VCU module controls a timing module of the automobile to perform delayed power-off timing and generate corresponding first timing time. When the first timing time reaches the preset time, the VCU module sends a first power-down control signal to a BMS (Battery Management System) module of the vehicle. The BMS module receives the first power-off control signal and controls the power battery relay of the automobile to be switched off according to the first power-off control signal, so that the delayed switching-off of the whole power system of the automobile is realized.
Referring to fig. 3, in other embodiments, step S140 includes: s310, if the working state of the automobile meets a power-off condition, sending a second power-off control signal; s320, carrying out time delay power-off timing according to the second power-off control signal, and obtaining second timing time; and S330, if the second timing time is equal to the preset time, controlling a power battery relay of the automobile to be disconnected.
Specifically, when the detected operating state of the vehicle satisfies the power-down condition, the VCU module transmits a second power-down control signal to the BMS module. And after the BMS module receives the second power-off control signal, the timing module is controlled to carry out delayed power-off timing and generate corresponding second timing time. When the second timing time reaches the preset time, the BMS module controls the power battery relay of the automobile to be switched off, and therefore the whole power system of the automobile is switched off in a delayed mode.
Referring to fig. 4, in some embodiments, step 120 includes: s410, detecting the engine state of the automobile according to the power-off request signal; s420, detecting the state of the power part of the automobile according to the engine state of the automobile; and S430, detecting the running state of the automobile according to the state of the power part of the automobile.
Specifically, the operating state of the automobile includes an engine state of the automobile, a power component state of the automobile, a running state of the automobile, and the like. And detecting the state of the engine of the automobile according to the power-off request signal, if the engine is not stopped, delaying to execute the step S420, and executing the operation in the step S420 again by the VCU module until the engine is stopped. The VCU module or the VCU module controls the detecting device of the automobile to detect the state of the power component of the automobile, wherein the power component comprises a driving component and components related to the driving component, such as: the power parts include a driving part, a functional part and the like. When the power component state meets the power-off condition, namely the power component state belongs to the power-off state, the VCU module or the VCU module controls the detection device to detect the driving state of the automobile.
In some embodiments, step S420 includes: detecting at least one of the following power component states based on an engine state of the vehicle: a drive motor state, a DCDC converter state, a power supply battery state, and a battery pack state. Specifically, when the engine of the automobile is in a stop state, the VCU module or the VCU module control detection device performs state detection on at least one of the driving motor, the DCDC converter, the power supply battery and the battery pack. For example, the temperature of the battery pack is detected, and when the temperature of the battery pack satisfies a power-off condition, the VCU module or the VCU module control detection device detects the driving state of the automobile.
Referring to fig. 5, in some embodiments, step S430 includes: s510, detecting the speed of the automobile according to the state of the power part of the automobile; and S520, detecting the power supply current of the automobile according to the speed of the automobile. Specifically, when the state of a power component of the automobile meets the power-off condition, the VCU module or the VCU module controls the detection device to detect the speed of the automobile, and when the speed of the automobile meets the power-off condition, the power supply current of the automobile is detected. For example, when the vehicle speed is more than or equal to 2km/h, the VCU module carries out delay waiting until the vehicle speed is less than or equal to 2km/h and then executes the detection operation of the state of the power supply current of the automobile. The VCU module or the VCU module controls the detection device to detect the supply current of the vehicle, for example: and detecting the direct current bus current of the automobile. When the current meets the power-off condition, the BMS module controls the relay of the power battery to be disconnected in a delayed mode. In some embodiments, if the current does not satisfy the power-off condition, the VCU module controls the driving motor of the vehicle to enter a short-circuit state, i.e., controls the driving component to actively short-circuit, so as to prevent the power battery, the bus capacitor and other high-voltage components from being damaged by the excessive back electromotive force.
In some embodiments, the BMS module performs adhesion detection in addition to the power battery relay disconnection by any of the methods described in the above embodiments to ensure that the power battery relay can be normally disconnected.
Referring to fig. 6, an embodiment of the present application further provides a power down control system for executing the power down control method described in any of the above embodiments. The power-off control system includes: a VCU module 100, a BMS module 200, and a timing module 300. The VCU module 100 is configured to obtain a power-off request signal, detect a working state of the vehicle according to the power-off request signal, determine whether the working state satisfies a power-off condition, and generate a determination result. The BMS module 200 is connected to the VCU module 100. The timing module 300 is connected to the VCU module 100 and the BMS module 200, respectively, and the timing module 300 is configured to perform delayed power-off timing and generate an initial timing time. The VCU module 100 is further configured to control the BMS module 200 to perform power-off operation according to the determination result, the preset time, and the initial timing time; or the BMS module 200 performs a power-down operation according to a preset time and an initial timing time. Specifically, according to two different possible embodiments of step S140, the initial timing time includes a first timing time or a second timing time. For example, in some embodiments, when the operating state of the vehicle satisfies the power-off condition, the VCU module 100 controls the timing module 300 to perform the delayed power-off timing and obtain the first timing time. When the first timing time reaches the preset time, the VCU module 100 sends a first power-off control signal to the BMS module 200, and the BMS module 200 controls the power battery relay of the vehicle to be turned off according to the first power-off control signal. In other embodiments, the VCU module 100 sends a second power-down control signal to the BMS module 200 if the operating state of the vehicle satisfies the power-down condition. The BMS module 200 controls the timing module 300 to perform the delayed power-off timing according to the second power-off control signal and obtains a second timing time. When the second timing time reaches the preset time, the BMS module 200 controls the power battery relay to be disconnected, thereby realizing the delayed turn-off of the whole power system.
The application also provides the electronic equipment. The electronic device includes: the system includes at least one processor, and a memory communicatively coupled to the at least one processor. Wherein the memory stores instructions that are executed by the at least one processor to cause the at least one processor, when executing the instructions, to implement the power down control method as described in any of the implementations above.
An embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions for: a power down method as described in any of the above implementations is performed.
The power-off control method, the power-off control system, the electronic device and the storage medium provided by the embodiment of the application carry out delayed power-off timing through the timing module, so that the power battery relay is subjected to delayed disconnection after a user leaves an automobile, the misjudgment of driving and/or automobile performance due to the fact that the user hears abnormal sound generated when the power battery relay is powered off is avoided, and the influence caused by the abnormal sound generated when the power battery relay is powered off is reduced.
The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. The power-off control method is applied to an automobile and is characterized by comprising the following steps:
acquiring a power-off request signal;
detecting the working state of the automobile according to the power-off request signal;
judging whether the working state of the automobile meets a power-off condition or not, and generating a judgment result;
and controlling the automobile to carry out delayed power-off operation according to the judgment result and preset time.
2. The power-off control method according to claim 1, wherein the controlling the automobile to perform the delayed power-off operation according to the judgment result and the preset time comprises:
if the working state of the automobile meets the power-off condition, performing delayed power-off timing to obtain first timing time;
if the first timing time is equal to the preset time, sending a first power-down control signal;
and controlling a power battery relay of the automobile to be switched off according to the first power-down control signal.
3. The power-off control method according to claim 1, wherein the controlling the automobile to perform the delayed power-off operation according to the judgment result and the preset time comprises:
if the working state of the automobile meets the power-off condition, sending a second power-off control signal;
carrying out delayed power-off timing according to the second power-off control signal and obtaining second timing time;
and if the second timing time is equal to the preset time, controlling a power battery relay of the automobile to be disconnected.
4. The power-down control method according to any one of claims 1 to 3, wherein the detecting an operating state of the automobile according to the power-down request signal includes:
detecting the engine state of the automobile according to the power-off request signal;
detecting the state of a power component of the automobile according to the state of an engine of the automobile;
and detecting the running state of the automobile according to the state of the power component of the automobile.
5. The power-off control method according to claim 4, wherein the detecting a running state of the automobile based on a state of a power component of the automobile includes:
detecting the speed of the automobile according to the state of a power part of the automobile;
and detecting the power supply current of the automobile according to the speed of the automobile.
6. The power-off control method according to claim 5, wherein the controlling the automobile to perform the delayed power-off operation according to the judgment result and the preset time further comprises:
and if the power supply current of the automobile does not meet the power-off condition, controlling a driving motor of the automobile to enter a short-circuit state.
7. The power-off control method according to claim 6, wherein the detecting a state of a power component of the automobile according to an engine state of the automobile includes:
detecting at least one of the following power component states based on the engine state of the vehicle: a drive motor state, a DCDC converter state, a power supply battery state, and a battery pack state.
8. A power down control system for performing the power down control method according to any one of claims 1 to 7, comprising:
the VCU module is used for acquiring a power-off request signal, detecting the working state of the automobile according to the power-off request signal, judging whether the working state meets a power-off condition or not and generating a judgment result;
a BMS module connected with the VCU module;
the timing module is respectively connected with the VCU module and the BMS module and is used for carrying out delayed power-off timing and generating initial timing time;
the VCU module is further used for controlling the BMS module to perform power-off operation according to the judgment result, preset time and the initial timing time; or the BMS module is used for performing power-off operation according to the preset time and the initial timing time.
9. An electronic device, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing:
the power down control method according to any one of claims 1 to 7.
10. A computer-readable storage medium storing computer-executable instructions for:
performing the power down control method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110422141.2A CN113135112A (en) | 2021-04-20 | 2021-04-20 | Power-off control method, system, electronic device and storage medium |
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| CN202110422141.2A CN113135112A (en) | 2021-04-20 | 2021-04-20 | Power-off control method, system, electronic device and storage medium |
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| CN113135112A true CN113135112A (en) | 2021-07-20 |
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| CN202110422141.2A Pending CN113135112A (en) | 2021-04-20 | 2021-04-20 | Power-off control method, system, electronic device and storage medium |
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| WO2022242331A1 (en) * | 2021-05-20 | 2022-11-24 | 长城汽车股份有限公司 | Vehicle power-off control method and apparatus, and medium and device |
| CN117429309A (en) * | 2023-11-01 | 2024-01-23 | 东风汽车股份有限公司 | Direct-current charging stop control method and system for pure electric vehicle |
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| CN111605403A (en) * | 2020-05-08 | 2020-09-01 | 广州小鹏汽车制造有限公司 | Power-off control method for vehicle, and computer-readable storage medium |
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| CN104590027A (en) * | 2013-10-31 | 2015-05-06 | 北汽福田汽车股份有限公司 | High-voltage switching-off control method and system of automobile and automobile with high-voltage switching-off control system |
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| WO2022242331A1 (en) * | 2021-05-20 | 2022-11-24 | 长城汽车股份有限公司 | Vehicle power-off control method and apparatus, and medium and device |
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Application publication date: 20210720 |