CN114454719A

CN114454719A - Vehicle control method and device, medium, equipment and vehicle

Info

Publication number: CN114454719A
Application number: CN202011135265.4A
Authority: CN
Inventors: 周明旺; 杨雪静
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2022-05-10
Anticipated expiration: 2040-10-21
Also published as: CN114454719B

Abstract

The disclosure relates to a vehicle control method and device, a medium, equipment and a vehicle. The method comprises the following steps: if a relay disconnection instruction sent by the hybrid power vehicle controller HCU responding to a lower electric signal sent by the vehicle body controller BCM is received, the relay of the power battery is controlled to be disconnected; carrying out adhesion detection on a relay of the power battery; and if the power-on instruction sent by the BCM is received in the process of carrying out adhesion detection on the relay of the power battery, stopping the current adhesion detection and executing a power-on initialization process. Therefore, one time of unnecessary adhesion detection is omitted, the delay of power-on time caused by executing two times of adhesion detection is avoided, and the power-on efficiency of the vehicle is improved.

Description

Vehicle control method and device, medium, equipment and vehicle

Technical Field

The present disclosure relates to the field of vehicle control technologies, and in particular, to a vehicle control method and apparatus, a medium, a device, and a vehicle.

Background

At present, the phenomenon of energy shortage is increasingly obvious, and the new energy automobile industry is developed vigorously. The new energy automobile is added with a power-on and power-off function, and when the automobile is powered on, the driving part is controlled to enter a working mode through a preset control strategy. With the development of new energy automobile intellectualization, many types of power-on and power-off processes are added, and how to handle the interaction between various power-on and power-off processes becomes a problem to be considered by engineers.

When a user operates a vehicle, the user often changes his own operation intention, for example, when the user is powering on, the user may change his own operation intention to request the vehicle to power off, and similarly, the user may also change his own operation intention to request the vehicle to power on again when the vehicle is powering off.

Disclosure of Invention

The purpose of the present disclosure is to provide a reliable and efficient vehicle control method and apparatus, medium, device, and vehicle.

In order to achieve the above object, the present disclosure provides a vehicle control method including:

if a relay disconnection instruction sent by the hybrid power vehicle controller HCU responding to a lower electric signal sent by the vehicle body controller BCM is received, the relay of the power battery is controlled to be disconnected;

carrying out adhesion detection on a relay of the power battery;

and if the power-on instruction sent by the BCM is received in the process of carrying out adhesion detection on the relay of the power battery, stopping the current adhesion detection and executing a power-on initialization process.

Optionally, after the relay controlling the power cell is turned off, the method further comprises:

and sending the state of the relay of the power battery to the HCU.

Optionally, after the adhesion detection is performed on the relay of the power battery, the method further comprises:

and if the adhesion detection result indicates that no adhesion exists, executing a lower current process.

Optionally, after the adhesion detection is performed on the relay of the power battery, the method further includes:

and if the adhesion detection result indicates adhesion, sending a fault signal to an output module of the vehicle to enable the output module to output a fault message.

The present disclosure also provides a vehicle control apparatus, the apparatus including:

the first control module is used for controlling the relay of the power battery to be disconnected if a relay disconnection instruction sent by the hybrid vehicle controller HCU responding to a lower electric signal sent by the vehicle body controller BCM is received;

the detection module is used for carrying out adhesion detection on the relay of the power battery;

and the second control module is used for stopping the current adhesion detection and executing a power-on initialization process if a power-on instruction sent by the BCM is received in the process of performing adhesion detection on the relay of the power battery.

Optionally, the apparatus further comprises:

and the first sending module is used for sending the state of the relay of the power battery to the HCU.

Optionally, the apparatus further comprises:

the third control module is used for executing a lower current process if the adhesion detection result indicates that adhesion is not generated;

and the second sending module is used for sending a fault signal to an output module of the vehicle if the adhesion detection result indicates adhesion, so that the output module outputs a fault message.

The present disclosure also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method provided by the present disclosure.

The present disclosure also provides an electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.

The present disclosure also provides a vehicle including the above vehicle control device provided by the present disclosure.

Through the technical scheme, if the BMS receives the power-on command sent by the BCM in the process of controlling the adhesion detection of the relay of the power battery, the BMS stops the current adhesion detection and executes the initialization process of the BMS power-on. Therefore, if the user changes the operation intention and requests the vehicle to be powered up again in the power-off process of the vehicle, the adhesion detection of the relay of the power battery is stopped, and the adhesion detection is performed in the initialization process of the power-on of the BMS. Therefore, one time of unnecessary adhesion detection is omitted, the delay of power-on time caused by executing two times of adhesion detection is avoided, and the power-on efficiency of the vehicle is improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a flow chart of a vehicle control method provided by an exemplary embodiment;

FIG. 2 is a flow chart of a vehicle control method provided by another exemplary embodiment;

FIG. 3 is a block diagram of a vehicle control apparatus provided in an exemplary embodiment;

FIG. 4 is a block diagram of an electronic device shown in an exemplary embodiment.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation. )

In the related art, when a vehicle is powered off, a Battery Management System (BMS) performs adhesion detection on a relay of a power Battery. If the user changes his or her own operation intention and requests the vehicle to be powered up again during the adhesion detection process, the BMS needs to start to execute a power-up initialization procedure and execute a power-up procedure after the adhesion detection is finished. And the adhesion detection of the relay of the power battery is included in the initialization process, so that the adhesion detection of the relay of the power battery needs to be performed twice. The inventor thinks that the BMS directly stops the current adhesion detection and performs the initialization procedure of power-on in the case that the user changes his own operation intention and requests the vehicle to be powered on again in the middle of power-off adhesion detection. Thus, unnecessary adhesion detection is omitted, and time is saved for power-on again.

FIG. 1 is a flow chart of a vehicle control method provided by an exemplary embodiment. As shown in fig. 1, the method may include the following steps.

Step S101, if a relay disconnection instruction sent by a Hybrid Control Unit (HCU) responding to a power-off signal sent by a Body Controller (BCM) is received, controlling the relay of the power battery to be disconnected;

s102, performing adhesion detection on a relay of the power battery;

step S103, if a power-on instruction sent by the BCM is received in the process of performing adhesion detection on the relay of the power battery, stopping the current adhesion detection and executing a power-on initialization process.

The method of the present disclosure is applied to a BMS of a hybrid vehicle. The BCM may include, for example, a controller KBCM in which a car key is integrated with the BCM. For example, when the BCM detects a driver-triggered power down request, a hardwired signal of KL15 OFF may be sent to various controllers of the vehicle. After receiving the KL15 OFF signal, the HCU sends a relay disconnection command to request the BMS to disconnect the relay of the power battery. The relay of the power battery may include a main positive relay, a main auxiliary relay, a pre-charge relay, and the like.

In the power-off process, the BMS may perform adhesion detection on the relay of the power battery after the relay controlling the power battery is turned off. In the related art, the initialization procedure of the BMS power-on includes adhesion detection of the relay of the power battery.

Through the technical scheme, if the BMS receives the power-on instruction sent by the BCM in the process of performing adhesion detection on the relay of the power battery, the BMS stops the current adhesion detection and executes the initialization process of the BMS power-on. Therefore, if the user changes the operation intention and requests the vehicle to be powered up again in the power-off process of the vehicle, the adhesion detection of the relay of the power battery is stopped, and the adhesion detection is performed in the initialization process of the power-on of the BMS. Therefore, one time of unnecessary adhesion detection is omitted, the delay of power-on time caused by executing two times of adhesion detection is avoided, and the power-on efficiency of the vehicle is improved.

In another embodiment, on the basis of fig. 1, after the relay controlling the power battery is opened (step S101), the method may further include: the status of the power cell's relay is sent to the HCU.

For example, the BMS may send different signals that indicate different states of the relay in advance. And the state of the relay of the power battery is sent to the HCU, so that the HCU can know the state of the relay in time, and the HCU can take necessary reminding measures conveniently.

In yet another embodiment, after the adhesion detection is performed on the relay of the power battery (step S102), the method may further include: and if the adhesion detection result indicates that no adhesion exists, executing a lower current process.

If the result of the adhesion detection indicates that no adhesion exists, the relay of the power battery can be confirmed to be actually disconnected, and the power-off process can be safely executed at the moment. Therefore, potential safety hazards caused by the fact that a current process is executed under the condition that the relay of the power battery is adhered are avoided, and safety of the vehicle is improved.

In yet another embodiment, after the adhesion detection is performed on the relay of the power battery (step S102), the method may further include: and if the adhesion detection result indicates adhesion, sending a fault signal to an output module of the vehicle so as to enable the output module to output a fault message.

If the result of the sticking detection indicates sticking, it is considered that although the BMS indicates to turn off the relay of the power battery, a failure actually occurs and the relay is not turned off. At the moment, the output module outputs the fault message to remind the user in time, so that measures can be taken in time conveniently, and potential safety hazards are eliminated. Outputting the fault message at the output module may include outputting a fault code or a text message in a dashboard of the vehicle, or outputting a fault message such as a flashing light or the like in a dedicated display device.

FIG. 2 is a flow chart of a vehicle control method provided by another exemplary embodiment. As shown in fig. 2, in this embodiment, when the BCM detects a driver-triggered power down request, the BCM sends KL15 OFF hardwire signals to the controllers; after receiving the KL15 OFF signal, the HCU sends a relay OFF command (for example, through a CAN bus) to request the BMS to turn OFF the relay; the BMS controls the disconnection relay after receiving a relay disconnection command sent by the HCU; the BMS feeds back the state of the relay to the HCU; BMS carries on relay adhesion detection; if the adhesion detection is finished and the adhesion detection indicates that no adhesion exists, the BMS starts to execute the power-off process of the BMS; if the adhesion detection is finished and the adhesion detection indicates adhesion, outputting a message of the fault of the power battery system in a display screen of the vehicle; if the BMS receives a KL15 ON signal (power-ON instruction) sent by the BCM in the adhesion detection process, the BMS stops adhesion detection and starts to execute a power-ON initialization program.

The present disclosure also provides a vehicle control apparatus. Fig. 3 is a block diagram of a vehicle control apparatus provided in an exemplary embodiment. As shown in fig. 3, a vehicle control apparatus 300 may include a first control module 301, a detection module 302, and a second control module 303.

The first control module 301 is configured to control the relay of the power battery to be turned off if a relay turn-off command sent by the HCU in response to the power-down signal sent by the BCM is received.

The detection module 302 is used for performing adhesion detection on a relay of the power battery.

The second control module 303 is configured to, if a power-on instruction sent by the BCM is received in a process of performing adhesion detection on a relay of the power battery, stop current adhesion detection, and execute a power-on initialization process.

Optionally, the vehicle control apparatus 300 further includes a first transmitting module.

The first sending module is used for sending the state of a relay of the power battery to the HCU.

Optionally, the vehicle control apparatus 300 further comprises a fourth control module and a second sending module.

And the third control module is used for executing a lower current process if the adhesion detection result indicates that adhesion is not generated.

And the second sending module is used for sending a fault signal to the output module of the vehicle if the adhesion detection result indicates adhesion so as to enable the output module to output a fault message.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

The present disclosure also provides an electronic device comprising a memory and a processor. The memory has a computer program stored thereon; the processor is used to execute the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.

Fig. 4 is a block diagram illustrating an electronic device 400 according to an example embodiment. As shown in fig. 4, the electronic device 400 may include: a processor 401 and a memory 402. The electronic device 400 may also include one or more of a multimedia component 403, an input/output (I/O) interface 404, and a communications component 405.

The processor 401 is configured to control the overall operation of the electronic device 400, so as to complete all or part of the steps in the vehicle control method. The memory 402 is used to store various types of data to support operation at the electronic device 400, such as instructions for any application or method operating on the electronic device 400 and application-related data, such as contact data, transmitted and received messages, pictures, audio, video, and so forth. The Memory 402 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 403 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 402 or transmitted through the communication component 405. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 404 provides an interface between the processor 401 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, which is not limited herein. The corresponding communication component 405 may therefore include: Wi-Fi module, Bluetooth module, NFC module, etc.

In an exemplary embodiment, the electronic Device 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the vehicle control methods described above.

In another exemplary embodiment, a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the vehicle control method described above is also provided. For example, the computer readable storage medium may be the memory 402 described above including program instructions executable by the processor 401 of the electronic device 400 to perform the vehicle control method described above.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A vehicle control method, characterized by comprising:

carrying out adhesion detection on a relay of the power battery;

2. The method of claim 1, wherein after a relay controlling the power cell is opened, the method further comprises:

and sending the state of the relay of the power battery to the HCU.

3. The method of claim 1, wherein after performing adhesion detection on a relay of the power cell, the method further comprises:

4. The method of claim 1, wherein after performing adhesion detection on a relay of the power cell, the method further comprises:

5. A vehicle control apparatus, characterized in that the apparatus comprises:

6. The apparatus of claim 5, further comprising:

7. The apparatus of claim 5, further comprising:

8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.

9. An electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 4.

10. A vehicle characterized by comprising the vehicle control apparatus of any one of claims 5 to 7.