CN115148221B

CN115148221B - Sound control method and device for pulse heating of power battery

Info

Publication number: CN115148221B
Application number: CN202210720455.5A
Authority: CN
Inventors: 李岩; 李帅; 董力嘉; 范雨卉; 徐泽绪; 潘忠亮; 黄智昊; 蔡辉; 袁帅
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2024-06-14
Anticipated expiration: 2042-06-23
Also published as: CN115148221A

Abstract

The invention discloses a sound control method and a control device for pulse heating of a power battery, wherein the electric automobile comprises the power battery and an electric driving system, the electric driving system at least comprises a control module and a motor, and the control method comprises the following steps: acquiring audio output information in a battery heating mode; determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises at least one of a voltage heating instruction and a current heating instruction; and driving the motor according to the heating instruction to heat the power battery in a charging and discharging mode. According to the invention, the pulse frequency of battery heating is changed so as to emit sounds with different tones, and the fixed-tone sounds or the music with combined tones can be played in the battery heating process, so that the subjective feeling of a user in the battery heating process is remarkably improved.

Description

Sound control method and device for pulse heating of power battery

Technical Field

The disclosure relates to the technical field of power battery charging, in particular to a sound control method and a sound control device for pulse heating of a power battery.

Background

Compared with a fuel oil automobile, the pure electric automobile and the hybrid electric automobile have the advantages of less pollution emission, low operation noise, high fuel oil economy and the like. In recent years, pure electric vehicles and hybrid electric vehicles have been widely popularized and applied.

In a low-temperature environment, the charging and discharging capabilities of the power battery of the electric vehicle are limited, and in order not to affect the use, the power battery needs to be heated to a proper working temperature as soon as possible. The traditional power battery is heated by adopting PTC heating technology, so that the cost is high, the heating efficiency is low, and the power battery needs to be discharged at low temperature, so that lithium is separated from the power battery, and the service life of the power battery is influenced. The power battery pulse heating technology utilizes the motor IGBT to complete the power battery heating function, and has more advantages in the aspects of cost and heating efficiency. However, in order to ensure a good heating rate, a large-amplitude alternating current is required, so that parts such as filter capacitors, inductors and the like of the three-phase motor assembly can vibrate, high-frequency sharp and harsher noise is generated, and subjective feelings of users inside and outside the vehicle can be seriously affected by the noise.

Disclosure of Invention

Accordingly, an objective of the present disclosure is to provide a sound control method and a control device for pulse heating of a power battery, so as to solve the technical problem of high noise of charging the battery through natural frequency in the prior art.

To achieve the above object, in a first aspect, the present disclosure provides a sound control method of pulse heating of a power battery, the electric vehicle including the power battery and an electric drive system including at least a control module and a motor, the method including: acquiring audio output information in a battery heating mode; determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises at least one of a voltage heating instruction and a current heating instruction; and driving the motor according to the heating instruction to heat the power battery in a charging and discharging mode.

In some embodiments, the determining the heating instructions from the acquired audio output information comprises: determining audio parameters based on the audio output information, wherein the audio parameters include at least pitch or volume; a heating command is determined based on the audio parameter, the heating command including at least a frequency command or an amplitude command.

In some embodiments, before the heating instruction is determined based on the audio parameter, the method further includes writing a frequency value and an amplitude value corresponding to pitch data and/or volume data of the target audio into a frequency instruction table and an amplitude instruction table, respectively.

In some embodiments, the current heating command is an alternating d-axis current command and the given q-axis current command is 0; the voltage heating command is an alternating d-axis voltage command, and the q-axis voltage command is given as 0.

In some embodiments, the d-axis current command includes at least one of a current command in the form of a square wave and a current command in the form of a sine wave; the d-axis voltage command includes at least one of a voltage command in the form of a square wave and a voltage command in the form of a sine wave.

In some embodiments, the control module turns on the battery heating mode when the battery is in a low temperature state, the whole vehicle is identified to have a charging gun inserted or a user remote charging reservation request is received.

In a second aspect, the present disclosure further provides a sound control device for pulse heating of a power battery, the electric vehicle including the power battery and an electric drive system, the electric drive system including at least a control module and a motor, the device including: the acquisition module is used for acquiring audio output information in a battery heating mode; the determining module is used for determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises at least one of a voltage heating instruction and a current heating instruction; and the driving module is used for driving the motor according to the heating instruction and heating the power battery in a charging and discharging mode.

In a third aspect, the present disclosure also provides a storage medium storing a computer program which, when executed by a processor, implements the steps of the method described in any one of the above claims.

In a fourth aspect, the present disclosure further provides an electronic device, at least including a memory, and a processor, where the memory stores a computer program, and the processor implements the steps of the method in any of the foregoing technical solutions when executing the computer program on the memory.

According to the embodiment of the disclosure, the pulse frequency of battery heating is changed to emit sounds with different tones, fixed-tone sounds or music with combined tones can be played in the battery heating process, and noise generated in the battery heating process can be effectively reduced while low-temperature heating of the power battery is realized, so that subjective feeling of a user in the battery heating process is remarkably improved.

The foregoing objects, features and advantages of the disclosure will be more readily apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of steps of a method of acoustic control for pulse heating of a power cell provided by the present disclosure;

FIG. 2 is a functional block diagram of a powertrain of an electric vehicle provided by the present disclosure;

FIG. 3 is a schematic diagram of steps provided by the present disclosure for determining a heating command based on acquired audio output information;

Fig. 4A and 4B are amplitude and frequency instruction tables provided by the present disclosure;

FIG. 5 is a schematic diagram of an active command output module provided by the present disclosure;

FIG. 6 is a specific waveform diagram of voltage form heating and current form heating of the power cell heating algorithm provided by the present disclosure;

Fig. 7 is a block diagram of a control device for heating a power battery of an electric vehicle provided by the present disclosure;

fig. 8 is a schematic structural diagram of an electronic device provided by the present disclosure.

Detailed Description

Specific embodiments of the disclosure are described in detail below with reference to the drawings, but are not limiting of the disclosure.

It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of this disclosure will occur to persons of ordinary skill in the art.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.

It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the present disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present disclosure will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the disclosure in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein. 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.

The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

The disclosure is further described below with reference to the drawings and specific examples.

Example 1

The first embodiment of the disclosure relates to the field of power battery charging, in particular to a control method for heating a power battery of an electric automobile.

Fig. 1 is a flowchart of steps of a sound control method for pulse heating of a power battery according to an embodiment of the present disclosure, where the embodiment is applicable to a power battery heating scenario of any device with an electric driving system, and the method may be performed by, but is not limited to, an electric vehicle as an execution body, where the execution body may be implemented in a software and/or hardware manner.

The electric automobile comprises an electric driving system and a power battery, wherein the electric driving system comprises a control module, a motor driving module and a motor, and the power battery is connected with the motor driving module.

The power battery may be any rechargeable battery, and embodiments of the present disclosure are not limited in this regard, and may be, for example, a lithium battery, or may be a nickel-metal hydride battery, or may be a sodium-sulfur battery, or may be a lead-acid battery. The connection link of the power battery and the motor drive module may be an electrical link.

The Motor type may be a permanent magnet synchronous Motor (PERMANENT MAGNET Synchronous Motor, PMSM), or may be an alternating current asynchronous Motor (AC Asynchronous Motor, ACMC), or may be a direct current brushless Motor (Brushless DC Motor, BLDC), or may be an Excitation Motor (EEM).

The control module may include a motor controller (Motor Control Unit, MCU) and the motor drive module may include an inverter. In another embodiment, when the main positive relay and the main negative relay of the whole vehicle high-voltage system are both in a closed state, after the high-voltage power-on is completed, the whole vehicle controller (Vehicle Control Unit, VCU) controls the MCU to enter a battery heating mode to generate a heating command, and a driving control signal is output according to the heating command.

Fig. 2 is a functional block diagram of a power system of an electric vehicle according to an embodiment of the present invention. Referring to fig. 2, the electric vehicle includes a torque command receiving module 1, a motor position sensor 2, a motor position information transmitting module 3, and an inverter 4. The motor position sensor 2 may be a resolver, or may be an incremental encoder, or may be any sensor that can detect motor rotor position information. The embodiment of the invention is exemplified by a three-phase permanent magnet synchronous motor, but is not limited to the embodiment of the invention.

In the electric vehicle, after the motor position sensor 2 completes the detection operation of the motor rotor position θ and the motor rotation speed information ω of the three-phase permanent magnet synchronous motor, the motor position information transmission module 2 transmits the motor rotor position θ and the motor rotation speed information ω to the forward conversion module 6 and the reverse conversion module 7. The reverse transformation module 7 performs coordinate system transformation based on three-phase currents I _{u_value}、I_{v_value} and I _{w_value} of the three-phase permanent magnet synchronous motor, and obtains a d-axis current I _{d_value} and a q-axis current I _{q_value}. In the motor output torque mode, the torque command receiving module 1 receives the torque command Te _cmd transmitted by VCU and transmits it to the torque-current command calculating module 5. The torque-current command calculation module 5 converts the torque command Te _cmd value into a d-axis current command i _{d_cmd} and a q-axis current command i _{q_cmd}. The d-axis current command id _{_cmd} and the q-axis current command I _{q_cmd} are respectively different from the d-axis current value I _{d_value} and the q-axis current value I _{q_value}, and the differences are input to the PI control module 9. The PI control module 9 calculates and outputs a d-axis voltage command u _d and a q-axis voltage command u _q. After the coordinate transformation operation of the forward transformation module 6, the d-axis voltage command u _d and the q-axis voltage command u _q are transformed into Alfa-axis voltage command u _α, and the q-axis voltage command u _q is transformed into Beta-axis voltage command u _β. After the Alfa axis voltage command u _α and the Beta axis voltage command u _β are input to the SVPWM module 8, a 6-path PWM duty ratio command is output through calculation of the SVPWM module 8, and on-off of 6 power devices UT, VT, WT, UB, VB and WB of the inverter 4 is controlled based on the 6-path PWM duty ratio command, so that the three-phase permanent magnet synchronous motor is controlled to output specified torque.

As shown in fig. 1, the sound control method for pulse heating of the power battery specifically includes the following steps:

s101, acquiring audio output information in a battery heating mode.

In the step, audio output information is acquired in a battery heating mode, wherein the audio output information can be designated music or songs or analog output of certain sounds; the designated music and song can be selected randomly from the preset pieces of music or actively selected by a driver from the preset pieces of music.

Specifically, when the battery is in a low-temperature state, the fact that the whole vehicle is inserted with a charging gun or a user remote charging reservation request is received is recognized, and the battery heating mode is started.

S102, determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises at least one of a voltage heating instruction and a current heating instruction.

After the above step S101 is completed, in this step, a heating instruction is determined according to the acquired audio output information, where the heating instruction is used to provide an instruction reference for the control module output driving control signal in the heating mode.

Specifically, the heating command includes at least one of a voltage heating command and a current heating command; the signal type of the heating command may be an analog signal or may be a digital signal; when the signal type of the heating instruction is a digital signal, the number system of the heating instruction may be binary, which is not limited by the embodiments of the present disclosure. The transmission mode of the heating command may be a wired transmission mode or may be a wireless transmission mode.

Further, as shown in fig. 3, the determining the heating instruction according to the acquired audio output information specifically includes the following steps:

S201, determining audio parameters based on the audio output information, wherein the audio parameters at least comprise pitch or volume.

In this step, audio parameters are determined based on the audio output information, wherein the audio parameters include at least pitch or volume. After the audio output information is determined, the song or simulated sound to be produced during the heating of the power battery is determined. While a song is made up of several different notes, to produce a complete song, the individual notes making up the song should be obtained, obtaining a set of data of pitch composition that varies over time.

S202, determining a heating instruction based on the audio parameter, wherein the heating instruction at least comprises a frequency instruction or an amplitude instruction.

After the pitch or volume data is determined, in this step, a heating instruction is determined based on the pitch or volume data. The nature of sound is a mechanical wave, so the sound velocity is fixed, the sound level is determined by the frequency and wavelength of the mechanical wave, and the sound size is determined by the amplitude and the distance of a person from the sound source. High frequency, short wavelength, high sound, whereas low frequency, long wavelength, low sound. The amplitude is large, the loudness is large, and the distance between a person and a sound source is small, so the loudness is large. That is, after the pitch or volume is determined, the frequency or amplitude that it should need to produce is determined accordingly.

In order to obtain the frequency or amplitude information conveniently, as shown in fig. 4, the frequency value and amplitude corresponding to the pitch data and/or the volume data of the target audio may be written into the frequency instruction table and the amplitude instruction table respectively, and the required frequency heating instruction or amplitude heating instruction may be determined by referring to the instruction table, where the music, song or analog sound data may be recorded by a recording device, or may be written by artificial design. The time information can be written into the time information of sound playing, and also can be written into the numerical value of a chip clock or a software system clock counter.

Specifically, through the initiative sound production command generation module, the output of battery heating commands of different traveling can be realized. As shown in fig. 5, the input signal of the active sounding module is time information, and the time information may be relative time, that is, playing time of music, song or analog sound, or a chip clock or a system counter value count corresponding to a time item. The active sounding instruction generation module obtains sounding pitch and sounding volume of music or songs through the amplitude instruction table lookup module and the frequency instruction table lookup module, wherein the sounding pitch is frequency instruction I _freq,U_freq in a voltage or current form. The volume of sound, i.e., amplitude command I _amp,U_amp in the form of voltage or current.

The active sounding instruction generation module may generate a current instruction or a voltage instruction according to the determined heating instruction. For example, the active sounding command generation module may give an alternating d-axis current command in the form of a current commandAnd gives a q-axis current command of 0, or may give an alternating q-axis current command/>, in the form of a current commandAnd giving a d-axis current command as 0; the command output module can also give alternating d-axis voltage commands/>, in the form of voltage commandsAnd the q-axis voltage command is given as 0, or the alternating q-axis voltage command/>, may be given in the form of a voltage commandAnd gives a d-axis voltage command of 0. Therefore, the bus end of the MCU can form alternating charge-discharge current, and the alternating charge-discharge current can realize the heating function of the power battery under the low-temperature working condition. In addition, the current or voltage command of 0 for the d-axis or q-axis is given to ensure that the three-phase permanent magnet synchronous motor does not continuously output torque during the heating process of the power battery. Therefore, the scheme of the embodiment also accords with the working condition that the whole vehicle is in a parking state when the low-temperature battery is heated and charged.

Further, fig. 6 shows specific waveforms of voltage-form heating and current-form heating of the power battery heating algorithm. As shown, the d-axis current command may include at least one of a current command in the form of a square wave and a current command in the form of a sine wave; the d-axis voltage command may include at least one of a voltage command in the form of a square wave and a voltage command in the form of a sine wave.

Specifically, a voltage heating command in the form of a sine wave, represented by a block a in fig. 6, is represented as a d-axis voltage commandTo the forward transform module 8. The q-axis voltage command is 0 at this time. The amplitude and frequency of the sine wave in module a are controlled by U _amp,U_freq, respectively. Voltage heating command in square wave form represented by block B/>This command is input to the forward conversion module 8 as a d-axis voltage command. The q-axis voltage command is 0 at this time. The amplitude and frequency of the square wave in block B are controlled by U _amp,U_freq, respectively. Current heating command in sine wave form represented by block C/>This command is input to the PI block 7 as a d-axis current command, and the q-axis current command is 0. The amplitude and frequency of the sine wave in block C are controlled by I _amp,I_freq, respectively. Current heating command in square wave form represented by block D/>This command is input to the PI block 7 as a d-axis current command, and the q-axis current command is 0. The amplitude and frequency of the sine wave in block D are controlled by I _amp,I_freq, respectively.

In addition, the alternating d-axis current command may be any other alternating current command, such as a triangular wave current command, a trapezoidal wave current command, or a step wave current command, other than the square wave current command and the sine wave current command.

Accordingly, the alternating d-axis voltage command may be any other alternating voltage command, such as a voltage command in the form of a triangle wave, a voltage command in the form of a trapezoid wave, or a voltage command in the form of a step wave, in addition to the voltage command in the form of a square wave and the voltage command in the form of a sine wave.

And S103, driving the motor according to the heating instruction, and heating the power battery in a charging and discharging mode.

After the step S102 is completed, in this step, the motor is driven according to the determined frequency command I _freq,U_freq and amplitude command I _amp,U_amp in the form of voltage or current, and corresponding music is generated while the power battery is heated in the form of charge and discharge.

According to the sound control method for pulse heating of the power battery, provided by the embodiment of the disclosure, the pulse frequency of the battery heating is changed to emit sounds with different tones, so that the fixed tone sounds or the music with combined tones can be played in the battery heating process, the low-temperature heating of the power battery is realized, and meanwhile, the noise generated in the battery heating process can be effectively reduced, so that the subjective feeling of a user in the battery heating process is remarkably improved.

Example 2

In order to better implement the above method, the second aspect of the present disclosure also provides a sound control device for pulse heating of a power battery of an electric vehicle, which control device may be integrated on an electronic device, wherein the electric vehicle comprises a power battery and an electric drive system comprising at least a control module and an electric motor.

For example, as shown in fig. 7, the control device 200 may include: the acquisition module 210, the determination module 220, and the driving module 230 are as follows:

(1) The acquiring module 210 is configured to acquire audio output information in the battery heating mode.

Specifically, the audio output information can be designated music or songs, or can be analog output of certain sounds; the designated music and song can be selected randomly from the preset pieces of music or actively selected by a driver from the preset pieces of music.

(2) A determining module 220, configured to determine a heating command according to the acquired audio output information, where the heating command includes at least one of a voltage heating command and a current heating command.

Specifically, the determining module 220 may further include an audio parameter determining unit and a heating instruction determining unit. Wherein the audio parameter determination unit determines an audio parameter based on the audio output information, the audio parameter including at least a pitch or a volume; the heating instruction determination unit determines a heating instruction based on the audio parameter, the heating instruction including at least a frequency instruction or an amplitude instruction.

(3) And the driving module 230 is configured to drive the motor according to the heating command, and perform charge-discharge type heating on the power battery.

Example 3

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the various methods of the above embodiments may be performed by instructions, or by instructions controlling associated hardware, which may be stored in a computer-readable storage medium and loaded and executed by a processor.

To this end, a third embodiment of the present disclosure provides a storage medium, which is a computer-readable medium storing a computer program that, when executed by a processor, implements the method provided by the embodiments of the present disclosure, comprising the steps S11 to S13:

S11, acquiring audio output information in a battery heating mode;

s12, determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises at least one of a voltage heating instruction and a current heating instruction;

And S13, driving the motor according to the heating instruction, and heating the power battery in a charging and discharging mode.

Further, the computer program, when executed by a processor, implements other methods provided by any of the above embodiments of the present disclosure.

Example 4

A fourth embodiment of the present disclosure provides an electronic device, as shown in fig. 8, at least including a processor 401 and a memory 402, where the memory 402 stores a computer program, and the processor 401 implements the method provided by any embodiment of the present disclosure when executing the computer program on the memory 402. The method performed by the electronic device computer program is exemplified as follows:

S21, acquiring audio output information in a battery heating mode;

S22, determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises at least one of a voltage heating instruction and a current heating instruction;

And S23, driving the motor according to the heating instruction, and heating the power battery in a charging and discharging mode.

In a specific implementation, the acquiring module 210, the determining module 220, and the driving module 230 are all stored as program units in the memory 402, and the processor 401 executes the program units stored in the memory 402 to implement corresponding functions.

The storage medium may be contained in the electronic device; or may exist alone without being incorporated into the electronic device.

The storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: acquiring at least two internet protocol addresses; sending a node evaluation request comprising at least two internet protocol addresses to node evaluation equipment, wherein the node evaluation equipment selects an internet protocol address from the at least two internet protocol addresses and returns the internet protocol address; receiving an Internet protocol address returned by node evaluation equipment; wherein the acquired internet protocol address indicates an edge node in the content distribution network.

Or the storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: receiving a node evaluation request comprising at least two internet protocol addresses; selecting an internet protocol address from at least two internet protocol addresses; returning the selected internet protocol address; wherein the received internet protocol address indicates an edge node in the content distribution network.

Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, including, but not limited to, 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 passenger computer, partly on the passenger computer, as a stand-alone software package, partly on the passenger computer and partly on a remote computer or entirely on the remote computer or server. In the case of remote computers, the remote computer may be connected to the passenger computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (e.g., connected through the internet using an internet service provider).

It should be noted that the storage medium described in the present disclosure may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: 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 disclosure, 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. In the present disclosure, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any storage 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 using any appropriate medium, including but not limited to: electrical wires, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units involved in the embodiments of the present disclosure may be implemented by means of software, or may be implemented by means of hardware. Wherein the names of the units do not constitute a limitation of the units themselves in some cases.

The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on 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.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by persons skilled in the art that the scope of the disclosure referred to in this disclosure is not limited to the specific combinations of features described above, but also covers other embodiments which may be formed by any combination of features described above or equivalents thereof without departing from the spirit of the disclosure. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).

Moreover, although operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.

While various embodiments of the present disclosure have been described in detail, the present disclosure is not limited to these specific embodiments, and various modifications and embodiments can be made by those skilled in the art on the basis of the concepts of the present disclosure, which modifications and modifications should fall within the scope of the claims of the present disclosure.

Claims

1. A sound control method for pulse heating of a power battery of an electric vehicle, the electric vehicle comprising a power battery and an electric drive system, the electric drive system comprising at least a control module and a motor, the method comprising:

Acquiring audio output information in a battery heating mode;

Determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises a voltage heating instruction and a current heating instruction;

Driving the motor according to the heating instruction to heat the power battery in a charging and discharging mode;

The determining a heating instruction according to the acquired audio output information comprises:

Determining audio parameters based on the audio output information, wherein the audio parameters include at least pitch or volume;

writing frequency values and/or amplitude values corresponding to the pitch data and/or the volume data of the target audio into a frequency instruction table and an amplitude instruction table respectively;

Determining a heating instruction based on the audio parameter, the heating instruction including at least a frequency instruction or an amplitude instruction;

The heating instruction is determined based on the audio parameters, wherein the heating instruction comprises an active sounding instruction generation module, a frequency instruction table lookup module and an amplitude instruction table lookup module, and sounding pitch and sounding volume of the audio are obtained through a lookup instruction table; the frequency instruction is a plurality of groups of switching frequency values of the audio to be output under different tunes, wherein the sounding pitch is the frequency instruction I _freq,U_freq in a voltage or current form, and the sounding volume is the amplitude instruction I _amp,U_amp in a voltage or current form.

2. The control method according to claim 1, wherein the current heating command is an alternating d-axis current command, and the given q-axis current command is 0; the voltage heating command is an alternating d-axis voltage command, and the q-axis voltage command is given as 0.

3. The control method according to claim 2, wherein the d-axis current command includes at least one of a current command in the form of a square wave and a current command in the form of a sine wave; the d-axis voltage command includes at least one of a voltage command in the form of a square wave and a voltage command in the form of a sine wave.

4. The control method according to claim 1, wherein the control module turns on the battery heating mode when the battery is in a low temperature state, it is recognized that the whole vehicle has a charging gun inserted or a user remote charging reservation request is received.

5. A sound control device for pulse heating of a power battery of an electric automobile comprises the power battery and an electric drive system,

The electric drive system at least comprises a control module and a motor, and is characterized in that the device comprises:

the acquisition module is used for acquiring audio output information in a battery heating mode;

The determining module is used for determining a heating instruction according to the acquired audio output information, wherein the heating instruction comprises at least one of a voltage heating instruction and a current heating instruction;

the driving module is used for driving the motor according to the heating instruction and heating the power battery in a charging and discharging mode;

The determining a heating instruction according to the acquired audio output information comprises: determining audio parameters based on the audio output information, wherein the audio parameters include at least pitch or volume; writing frequency values and/or amplitude values corresponding to the pitch data and/or the volume data of the target audio into a frequency instruction table and an amplitude instruction table respectively;

Determining a heating instruction based on the audio parameter, the heating instruction including at least a frequency instruction or an amplitude instruction; the heating instruction is determined based on the audio parameters, wherein the heating instruction comprises an active sounding instruction generation module, a frequency instruction table lookup module and an amplitude instruction table lookup module, and sounding pitch and sounding volume of the audio are obtained through a lookup instruction table; the frequency instruction is a plurality of groups of switching frequency values of the audio to be output under different tunes, wherein the sounding pitch is the frequency instruction I _freq,U_freq in a voltage or current form, and the sounding volume is the amplitude instruction I _amp,U_amp in a voltage or current form.

6. A storage medium storing a computer program, which when executed by a processor performs the steps of the method of any one of claims 1 to 4.

7. An electronic device comprising at least a memory, a processor, the memory having stored thereon a computer program, characterized in that the processor, when executing the computer program on the memory, realizes the steps of the method according to any of claims 1 to 4.