CN114696418A

CN114696418A - Power saving method, device and related equipment

Info

Publication number: CN114696418A
Application number: CN202210362080.XA
Authority: CN
Inventors: 肖俊远
Original assignee: Beijing Automotive Research Institute Co Ltd
Current assignee: Beijing Automotive Research Institute Co Ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-07-01

Abstract

The application provides a power saving method, a power saving device and related equipment, and relates to the technical field of electric automobiles, wherein the method comprises the following steps: acquiring state information of a vehicle and a first residual capacity of a low-voltage battery of the vehicle; generating a power saving instruction under the condition that the vehicle is determined to be in an idle state according to the state information and the first residual electric quantity is lower than a first electric quantity threshold value; and according to the power saving instruction, performing low-power consumption processing on target equipment of the vehicle, wherein the target equipment is power utilization equipment which uses the low-voltage battery for power supply. Whether the vehicle is in an idle state or not is timely identified by acquiring the state information of the vehicle, and when the vehicle is in the idle state and the first residual electric quantity of the low-voltage battery of the vehicle is lower than a first electric quantity threshold value, low-power consumption processing is performed on target equipment in the vehicle, so that the low-voltage battery is prevented from being discharged too fast, and the power shortage risk of the low-voltage battery is reduced.

Description

Power saving method, device and related equipment

Technical Field

The application relates to the technical field of electric vehicles, in particular to a power saving method, a power saving device and related equipment.

Background

The electric vehicle is a vehicle which runs by using a vehicle-mounted power supply as power and driving wheels by using a motor.

Currently, a vehicle-mounted power supply generally includes a high-voltage battery and a low-voltage battery, where the high-voltage battery is used for supplying power to a high-voltage subsystem in an electric vehicle, and the low-voltage battery is used for supplying power to a low-voltage subsystem in the electric vehicle.

In application, it is found that a low-voltage battery which is powered by a high-voltage battery has a greater risk of power shortage compared with a high-voltage battery which can be directly charged by a generator or a charging pile.

Disclosure of Invention

An object of the embodiments of the present application is to provide a power saving method, a power saving device, and a related apparatus, which are used for solving the problem that a low-voltage battery has a large power shortage risk.

To solve the above problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a power saving method, including:

acquiring state information of a vehicle and a first residual capacity of a low-voltage battery of the vehicle;

generating a power saving instruction under the condition that the vehicle is determined to be in an idle state according to the state information and the first residual electric quantity is lower than a first electric quantity threshold value;

and according to the power saving instruction, performing low-power consumption processing on target equipment of the vehicle, wherein the target equipment is power utilization equipment which uses the low-voltage battery for power supply.

In a second aspect, an embodiment of the present application provides a power saving device, including:

the first acquisition module is used for acquiring the state information of the vehicle and the first residual capacity of the low-voltage battery of the vehicle;

the instruction generation module is used for generating a power saving instruction under the condition that the vehicle is determined to be in an idle state according to the state information and the first residual electric quantity is lower than a first electric quantity threshold value;

and the power saving module is used for carrying out low-power consumption processing on target equipment of the vehicle according to the power saving instruction, wherein the target equipment is electric equipment which uses the low-voltage battery for power supply.

In a third aspect, an embodiment of the present application further provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor is configured to read a program in the memory to implement the steps of the method according to the first aspect.

In a fourth aspect, an embodiment of the present application further provides a readable storage medium for storing a program, where the program when executed by a processor implements the steps in the method according to the foregoing first aspect.

In the embodiment of the application, whether the vehicle is in an idle state or not is timely identified by acquiring the state information of the vehicle, and when the vehicle is in the idle state and the first residual capacity of the low-voltage battery of the vehicle is lower than the first capacity threshold value, the low-power consumption processing is performed on the target equipment in the vehicle, so that the low-voltage battery is prevented from being discharged too fast, and the power shortage risk of the low-voltage battery is reduced.

Drawings

Fig. 1 is a schematic flowchart of a power saving method provided in an embodiment of the present application;

FIG. 2 is a system block diagram of an electrical device in a vehicle according to an embodiment of the present disclosure;

FIG. 3 is a flow chart of another power saving method provided by the embodiment of the present application;

fig. 4 is a schematic structural diagram of a power saving device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work according to the embodiments of the present application are within the scope of the present application.

The terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Further, as used herein, "and/or" means at least one of the connected objects, e.g., a and/or B and/or C, means 7 cases including a alone, B alone, C alone, and both a and B present, B and C present, both a and C present, and A, B and C present.

Referring to fig. 1, fig. 1 is a schematic flow chart of a power saving method according to an embodiment of the present application, and as shown in fig. 1, the power saving method includes the following steps:

step 101, obtaining state information of a vehicle and a first residual capacity of a low-voltage battery of the vehicle.

The value of the state information can be a first value or a second value, and under the condition that a user exists on the vehicle, the state information is the first value, and the vehicle is in a use state at the moment; under the condition that no user exists on the vehicle, the state information is a second value, and the vehicle is in an idle state at the moment; the specific value of the state information can be determined according to monitoring data of at least one target sensor on the vehicle, and the target sensor can be understood as a sensor for monitoring whether a user exists on the vehicle.

For example, in a case that the target sensor includes a pressure sensor disposed on a vehicle seat and a camera disposed inside the vehicle, if the pressure sensor indicates that a pressure currently borne by the vehicle seat is greater than a pressure threshold and a portrait exists in a monitoring image currently acquired by the camera (identified based on a face monitoring algorithm), setting the state information as a first value; otherwise, setting the state information as a second value.

It should be noted that, in practical applications, the specific types and the specific numbers of the target sensors may be adaptively adjusted according to actual requirements, and preferably, two or two different types of target sensors are used to comprehensively determine the value (referred to as a first value or a second value) of the state information, so as to avoid the problem of erroneous judgment or missed judgment possibly existing in a single type of target sensor.

In some embodiments, the value of the state information may also be an ON value or an OFF value, and in the case of normal ignition of the vehicle, the state information is an ON value, and the vehicle is in a use state at this time; in the case where the vehicle is turned OFF, the status information is an OFF value (in the vehicle-OFF state), and the user may still be located inside the vehicle while the vehicle is in an idle state. In this embodiment, the specific value of the state information may be determined comprehensively according to the insertion state (insertion state or extraction state) of the vehicle key and the ON-OFF state (activation state or OFF state) of the vehicle drive assembly, and when the vehicle key is inserted and the vehicle drive assembly is activated, the state information is determined to be an ON value, otherwise the state information is determined to be an OFF value.

In practical application, a value mode can be selected from the two modes according to actual requirements to set a specific value of the state information.

The first remaining capacity can be understood as a remaining capacity value of the vehicle low-voltage battery, and the first remaining capacity can be monitored in real time through a voltage sensor arranged on the vehicle low-voltage battery.

And 102, generating a power saving instruction under the condition that the vehicle is determined to be in an idle state according to the state information and the first residual electric quantity is lower than a first electric quantity threshold value.

As described above, when the state information is the second value or the OFF value, it may be correspondingly determined that the vehicle is in the idle state, and at this time, the remaining power condition of the low-voltage battery is analyzed by comparing the first remaining power with the first power threshold of the preset value, so that when the remaining power condition of the low-voltage battery is poor (that is, the first remaining power is lower than the first power threshold), a power saving instruction is generated in time, power consumption of a vehicle-related device (that is, a power-consuming device in the vehicle that uses the low-voltage battery for power supply) on the low-voltage battery is reduced, a usage duration of the low-voltage battery in the current remaining power condition is prolonged, and a power shortage risk of the low-voltage battery is reduced.

And 103, performing low-power consumption processing on target equipment of the vehicle according to the power saving instruction.

Wherein the target device is an electric device powered by the low-voltage battery, such as a seat heating device, a sound device, a warm air device, and the like.

In some embodiments, according to the power saving instruction, the low power consumption processing on the target device of the vehicle may be:

the target equipment is adjusted from a high energy consumption state to a low energy consumption state, and then when the first remaining electric quantity of the low-voltage battery is lower than an electric quantity warning threshold value, the target equipment is adjusted from the low energy consumption state to a closed state.

Or only adjusting the target device from a high-energy consumption state to a low-energy consumption state or an off state.

Preferably, when the status information is an OFF value, in the process of performing low power consumption processing on the target device of the vehicle in response to a situation that the user may be staying in the vehicle, the user may be prompted in a voice broadcast manner (for example, a preset warning sound is played), meanwhile, first text information such as "low-voltage battery power is insufficient" and the entertainment system is switched to the low-power consumption mode is displayed on a display (for example, a dashboard of the vehicle), and when the voice broadcast is completed and the text display time of "low-voltage battery power is insufficient and the entertainment system is switched to the low-power consumption mode" reaches a preset time duration, the target device is switched from the high-power consumption state to the low-power consumption state, and second text information such as "low-voltage battery power is insufficient" and the entertainment system is switched to the low-power consumption mode "is displayed on the display, that is in a voice and/or text interaction manner, the user is prompted, relatively abundant reaction time is reserved for the user, and the user obtains better use experience.

The preset time period may be 10 seconds, 15 seconds, and the like, and in practical application, the preset time period, the first text information, and the second text information may be adaptively adjusted according to actual requirements, which is not limited in the embodiment of the present application.

As mentioned above, whether the vehicle is in an idle state or not is timely identified by acquiring the state information of the vehicle, and when the vehicle is in the idle state and the first remaining capacity of the low-voltage battery of the vehicle is lower than the first capacity threshold value, low-power consumption processing is performed on target equipment in the vehicle, so that the low-voltage battery is prevented from being discharged too fast, and the power shortage risk of the low-voltage battery is reduced.

For example, in the case that the status information is the second value or the OFF value, the System block diagram of the electrical devices in the vehicle may be as shown in fig. 2, where an Intelligent Battery Sensor (IBS) and a Body Controller (BCM) communicate via a Local Interconnection Network (LIN), a Gateway Controller (Gateway, GW), a mobile Phone Wireless Charging Module (PWC), a Multi-function steering wheel (MFS), an Electronic thermostat Controller (Electronic thermal Control System, ECC), a Driver Seat Memory Controller (Driver Seat Controller, DSMC), a Passenger Seat Module (PSM), a Body Controller, a keyless Entry and Start Controller (Passive Controller, map), a power amplifier (Controller Integrated power amplifier, map), AMP), a Vehicle Control Unit (VCU), a Power Distribution Unit (PDU), and a Battery Management System Controller (BMS) communicate through a Controller Area Network (CAN).

For routing between the LIN line and the CAN line, the vehicle body controller is used as a gateway between the intelligent storage battery sensor and the CAN, and is used for routing an LIN message of the intelligent storage battery sensor to the whole vehicle CAN, routing a CAN message on the CAN to the LIN and sending the CAN message to the intelligent storage battery sensor.

The vehicle body controller can control the on-off of the electric appliances of the whole vehicle, other controllers are matched to execute corresponding operations, and human-computer interaction is completed through the integrated cabin controller.

In some embodiments, as shown in fig. 3, in a case that the state information of the vehicle (the vehicle in this embodiment includes the generator) is at an ON value, the vehicle controller may correspondingly detect an operating state of the generator and a voltage value of the storage battery (including the high-voltage battery and the low-voltage battery), and in a case that the generator is abnormally operated or the voltage value of the storage battery is too low, the vehicle controller may perform low power consumption processing ON each comfort electrical appliance (including the aforementioned target device) in the vehicle, until the operating state of the generator is recovered and the voltage value of the storage battery is higher than a threshold value, the vehicle controller may control each comfort electrical appliance in the vehicle to exit the low power consumption mode in cooperation with other controllers.

For example, the electronic thermostatic controller can identify the gear of the blower in the vehicle based on the closing instruction of the comfortable electrical appliance, when the gear of the blower is greater than a gear threshold (such as 3 gears), the gear of the blower is lowered to the gear where the gear threshold is located after 5 seconds of timing, and when the gear of the blower is less than or equal to the gear threshold, no processing is performed;

the driver seat memory controller can close the heating function and the ventilation function of the driver seat after timing for 5 seconds based on a comfortable electrical appliance closing instruction, and the driver seat memory controller cannot be restarted after manual restart of a user;

the passenger seat module closes the heating function and the ventilation function of the passenger seat after timing for 5 seconds based on a comfortable electrical appliance closing instruction, and limits that the passenger seat cannot be restarted after being manually restarted;

the multifunctional steering wheel can close the heating function of the steering wheel after timing for 5 seconds based on a comfortable electrical appliance closing instruction, and the condition that the multifunctional steering wheel cannot be restarted after manual restart of a user is limited;

the wireless charging module of the mobile phone can close the wireless charging function after timing for 5 seconds based on a comfortable electrical appliance closing instruction, and can not be restarted after manual restart of a user.

Optionally, after the generating the power saving command, the method further includes:

acquiring a second residual capacity of the vehicle high-voltage battery;

and under the condition that the second residual electric quantity is not lower than a second electric quantity threshold value, controlling a vehicle high-voltage battery to charge the low-voltage battery according to the power saving instruction.

As described above, under the condition that the remaining capacity of the low-voltage battery is too low (meaning that the first remaining capacity is lower than the first capacity threshold), the low-voltage battery is charged by controlling the high-voltage battery, so that the electric energy supplement of the low-voltage battery is timely completed, the condition that the electric capacity of the low-voltage battery is empty after the vehicle is idle for a long time is avoided, the power shortage risk of the low-voltage battery can be further reduced, and meanwhile, the normal use of the target equipment is ensured (the target equipment comprises a vehicle door controller, under the condition that the low-voltage battery is completely discharged, even if the electric energy of the high-voltage battery is sufficient, the condition that the vehicle door cannot be opened by a user still occurs, and therefore, the user can obtain better use experience, and the user can obtain better use experience.

In a preferred embodiment, the occurrence of the overcharge of the low-voltage battery can be avoided by setting the charging threshold, that is, in the process of charging the low-voltage battery by the high-voltage battery, the charging operation of the low-voltage battery by the high-voltage battery is interrupted in time by comparing the first remaining capacity with the charging threshold when the first remaining capacity is greater than or equal to the charging threshold, so that the protection of the low-voltage battery is realized, and the service life of the low-voltage battery is prolonged.

Optionally, after the second remaining capacity of the vehicle high-voltage battery is obtained, the method further includes:

generating a power warning if the second remaining power is below a second power threshold;

and sending the electric energy warning to a terminal.

As described above, in the case where the second remaining power is lower than the second power threshold, the power supply to the battery is timely completed by generating the power warning and sending the power warning to the terminal, and by timely feeding back to the user that the power of the battery (including the high-voltage battery and the low-voltage battery) of the vehicle is insufficient, so that the user can timely complete the power supply to the battery based on the power warning.

Wherein, the terminal may also be called as a terminal Device or a User Equipment (UE), the terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (Mobile Internet Device, MID), a Wearable Device (Wearable Device), a pedestrian terminal (PUE) and other terminal side devices, and the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal.

Optionally, after obtaining the second remaining capacity of the vehicle high-voltage battery, the method further includes:

acquiring the current environment temperature and the initial electric quantity threshold of the vehicle;

and adjusting the electric quantity initial threshold value according to the current environment temperature to obtain the second electric quantity threshold value.

As described above, before the second remaining power and the second power threshold are compared, the power initial threshold is adjusted based on the current ambient temperature of the vehicle, so as to obtain the second power threshold with higher accuracy, thereby ensuring the accuracy of analyzing the remaining power condition of the high-voltage battery.

The characteristic that the capacity of the battery decreases with decreasing temperature can be adapted by setting the current ambient temperature and the second charge threshold to be in a negative correlation relationship (i.e., the lower the current ambient temperature, the higher the value of the second charge threshold obtained based on the current ambient temperature).

In a preferred embodiment, the accuracy of the obtained current ambient temperature is ensured by arranging a plurality of temperature sensors at different positions of the high-voltage battery and determining the current ambient temperature based on the concentration trend of the sensed temperatures of the plurality of temperature sensors, so that the obtained second charge threshold value has better accuracy.

Optionally, after the power warning is sent to the terminal, the method further includes:

acquiring at least one piece of charging address information, wherein each piece of charging address information corresponds to one piece of charging equipment in an area where the vehicle is located;

determining target address information according to the at least one piece of charging address information, wherein the target address information is charging address information with the shortest charging distance corresponding to the at least one piece of charging address information, and the charging distance is the distance between charging equipment corresponding to the charging address information and the current position of the vehicle;

and sending the target address information to the terminal.

Through the mode, the electric energy supplement operation of the vehicle storage battery by the user is facilitated, and the electric energy supplement of the vehicle storage battery is completed quickly by the auxiliary user.

The charging address information is understood as address information corresponding to a charging device in an idle state (that is, a charging device corresponding to the charging address information is not occupied by another vehicle).

In some embodiments, after the vehicle enters a target area, public information transmitted by a central control server corresponding to the target area may be acquired, where the public information includes the at least one charging address information; the target area is understood to be an area including a charging device, such as a parking lot.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a power saving device 200 provided in an embodiment of the present application, and as shown in fig. 4, the power saving device 200 includes:

the first acquisition module 201 is used for acquiring state information of a vehicle and a first residual capacity of a low-voltage battery of the vehicle;

the instruction generation module 202 is configured to generate a power saving instruction when it is determined that the vehicle is in an idle state according to the state information and the first remaining electric quantity is lower than a first electric quantity threshold;

and the power saving module 203 is configured to perform low power consumption processing on target equipment of the vehicle according to the power saving instruction, where the target equipment is an electric device that uses the low-voltage battery for power supply.

Optionally, the apparatus 200 further includes:

the second acquisition module is used for acquiring a second residual electric quantity of the vehicle high-voltage battery;

and the charging module is used for controlling a vehicle high-voltage battery to charge the low-voltage battery according to the power saving instruction under the condition that the second residual electric quantity is not lower than a second electric quantity threshold value.

Optionally, the apparatus 200 further includes:

the warning module is used for generating an electric energy warning under the condition that the second residual electric quantity is lower than a second electric quantity threshold value;

and the first transmission module is used for sending the electric energy warning to a terminal.

Optionally, the apparatus 200 further includes:

the third acquisition module is used for acquiring the current environment temperature and the initial threshold value of the electric quantity of the vehicle;

and the threshold adjusting module is used for adjusting the electric quantity initial threshold according to the current environment temperature to obtain the second electric quantity threshold.

Optionally, the apparatus 200 further includes:

the system comprises an address acquisition module, a charging module and a charging module, wherein the address acquisition module is used for acquiring at least one piece of charging address information, and each piece of charging address information corresponds to one piece of charging equipment in an area where a vehicle is located;

the target address determining module is used for determining target address information according to the at least one piece of charging address information, wherein the target address information is charging address information with the shortest charging distance corresponding to the at least one piece of charging address information, and the charging distance is the distance between charging equipment corresponding to the charging address information and the current position of the vehicle;

and the address transmission module is used for sending the target address information to the terminal.

The power saving device 200 can implement each process of the method embodiment in fig. 1 in the embodiment of the present application, and achieve the same beneficial effects, and for avoiding repetition, the details are not described here again.

The embodiment of the application also provides communication equipment. Referring to fig. 5, the communication device may include a processor 301, a memory 302, and a program 3021 stored on the memory 302 and operable on the processor 301.

When the program 3021 is executed by the processor 301, any steps in the method embodiment corresponding to fig. 1 may be implemented and achieve the same beneficial effects, which are not described herein again.

Those skilled in the art will appreciate that all or part of the steps of the method according to the above embodiments may be implemented by hardware associated with program instructions, and the program may be stored in a readable medium.

An embodiment of the present application further provides a readable storage medium, where a computer program is stored on the readable storage medium, and when the computer program is executed by a processor, any step in the method embodiment corresponding to fig. 1 may be implemented, and the same technical effect may be achieved, and in order to avoid repetition, details are not repeated here.

The computer-readable storage media of the embodiments of the present application may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a storage medium may be transmitted over any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the disclosure, and it is intended that such changes and modifications be considered as within the scope of the disclosure.

Claims

1. A method for saving power, comprising:

2. The method of claim 1, wherein after the generating the power saving instruction, the method further comprises:

acquiring a second residual capacity of the vehicle high-voltage battery;

3. The method according to claim 2, wherein after the second remaining capacity of the vehicle high-voltage battery is acquired, the method further comprises:

and sending the electric energy warning to a terminal.

4. The method according to claim 2, characterized in that after said acquiring the second remaining amount of the vehicle high-voltage battery, the method further comprises:

5. The method of claim 3, wherein after sending the power alert to a terminal, the method further comprises:

acquiring at least one piece of charging address information, wherein each piece of charging address information corresponds to a piece of charging equipment in an area where the vehicle is located;

and sending the target address information to the terminal.

6. A power saving device, comprising:

7. The apparatus of claim 6, further comprising:

8. The apparatus of claim 7, further comprising:

9. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is configured to read a program in the memory to implement the steps of the power saving method according to any one of claims 1 to 5.

10. A readable storage medium storing a program, wherein the program, when executed by a processor, implements the steps in the power saving method according to any one of claims 1 to 5.