CN109458454B

CN109458454B - Automobile control method and device and automobile

Info

Publication number: CN109458454B
Application number: CN201811366911.0A
Authority: CN
Inventors: 戴军
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2021-02-19
Anticipated expiration: 2038-11-16
Also published as: CN109458454A

Abstract

The invention discloses an automobile control method, an automobile control device and an automobile, wherein the method comprises the following steps: receiving a shift request from a current gear to a required gear; if the required gear is a P gear, judging whether the current speed of the automobile is not greater than a set P gear locking speed threshold, wherein the P gear locking speed threshold is not 0; and if so, switching the current gear to the required gear. When other gears are switched to the P gear, the vehicle speed is not greater than the set P gear locking vehicle speed threshold value, the switching to the P gear is allowed, the condition of entering the P gear is relieved to a certain extent, the P gear can be switched when a slope slides, and therefore the corresponding gear is engaged according to the requirements of a driver.

Description

Automobile control method and device and automobile

Technical Field

The invention relates to the technical field of automobiles, in particular to an automobile control method and device and an automobile.

Background

With the rapid development of the automobile industry, more and more vehicles are provided on the road surface, and likewise, under the condition of ensuring the safety of the vehicles, a driver can freely switch the gears of the vehicles in the driving process, thereby also becoming the target pursued by each family enterprise.

In the prior art, during gear shifting, some situations exist in which corresponding gears cannot be engaged according to the requirements of a driver. For example, when other gears are switched to the P gear, i.e. when the gear enters the P gear, the vehicle must be completely stationary, for example, when driving on a slope, if the hand brake or the brake fails, the vehicle may roll and cannot be completely stationary, and at this time, the driver cannot switch to the P gear, so that the corresponding gear cannot be engaged according to the requirements of the driver.

Disclosure of Invention

The invention provides an automobile control method, an automobile control device and an automobile, which are used for solving the problem that the automobile cannot be put into a corresponding gear according to the requirements of a driver in the prior art.

The invention provides an automobile control method, which is applied to an automobile and comprises the following steps:

receiving a shift request from a current gear to a required gear;

if the required gear is a P gear, judging whether the current speed of the automobile is not greater than a set P gear locking speed threshold, wherein the P gear locking speed threshold is not 0;

and if so, switching the current gear to the required gear.

Further, if the current gear is the P gear, the method further comprises:

judging whether a brake pedal of the automobile is stepped down;

and if so, switching the current gear to the required gear.

Further, if the current gear is not the P gear and the demanded gear is not the P gear, the method further includes:

acquiring parameters required by a gear shift allowing state corresponding to the current gear and the required gear, and acquiring current parameter values of the parameters, wherein the parameters comprise at least one of motor rotating speed, motor rotating direction, vehicle speed and whether a brake signal is received;

judging whether the automobile is in a gear shifting allowed state corresponding to the current gear and the required gear or not according to the current parameter value;

and if so, switching the current gear to the required gear.

Further, if the current gear is an N gear and the required gear is an R gear, the determining whether the vehicle is in a shift permission state corresponding to the current gear and the required gear according to the current parameter value includes:

judging whether the absolute value of the current motor rotating speed is not less than a preset vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value, and the high-speed running vehicle speed threshold value is greater than the P-gear locking vehicle speed threshold value; or

And judging whether the current motor rotating direction is reverse or not according to the current motor rotating direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold.

Further, if the current gear is an N gear and the required gear is a D gear or an S gear, the determining whether the vehicle is in a shift permission state corresponding to the current gear and the required gear according to the current parameter value includes:

judging whether a braking signal is currently received or not according to whether the braking signal and the current motor rotating speed are currently received or not, wherein the absolute value of the current motor rotating speed is not greater than a preset vehicle static rotating speed threshold value; or

Judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold; or

And judging whether the current rotation direction is positive rotation or not according to the current motor rotation direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold.

Further, if the current gear is an R gear and the required gear is a D gear or an S gear, the determining whether the vehicle is in a shift permission state corresponding to the current gear and the required gear according to the current parameter value includes:

And judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value.

Further, the method further comprises:

if the automobile is in a power-off state or an initial power-on state, judging whether the current speed is not greater than the P gear locking speed threshold;

if yes, switching the current gear to a P gear;

and if not, switching the current gear to the N gear.

The invention provides an automobile control device, which is applied to an automobile and comprises:

the gear shifting control device comprises a receiving module, a judging module and a judging module, wherein the receiving module is used for receiving a gear shifting request from a current gear to a required gear;

the judging module is used for judging whether the current speed of the automobile is not greater than a set P gear locking speed threshold value if the required gear is a P gear, wherein the P gear locking speed threshold value is not 0;

and the control module is used for switching the current gear to the required gear when the judgment result of the judgment module is yes.

Further, the judging module is further configured to judge whether a brake pedal of the automobile is pressed down if the current gear is a P gear;

the judging module is further configured to, if the current gear is not a P gear and the required gear is not a P gear, obtain a parameter required by a shift permission state corresponding to the current gear and the required gear, and obtain a current parameter value of the parameter, where the parameter includes at least one of a motor rotation speed, a motor rotation direction, a vehicle speed, and whether a braking signal is received; judging whether the automobile is in a gear shifting allowed state corresponding to the current gear and the required gear or not according to the current parameter value;

the judging module is specifically configured to judge whether an absolute value of a current motor rotation speed is not less than a preset vehicle stationary rotation speed threshold value or not according to the current motor rotation speed and a current vehicle speed if the current gear is an N gear and the required gear is an R gear, wherein the current vehicle speed is not greater than a preset high-speed driving vehicle speed threshold value, and the high-speed driving vehicle speed threshold value is greater than the P-gear locking vehicle speed threshold value; or judging whether the current motor rotating direction is reverse or not according to the current motor rotating direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold;

the judging module is specifically configured to judge whether a braking signal is currently received according to whether a braking signal and a current motor rotating speed are currently received or not if the current gear is an N gear and the required gear is a D gear or an S gear, and an absolute value of the current motor rotating speed is not greater than a preset vehicle stationary rotating speed threshold; or judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value; or judging whether the current rotating direction is positive rotation or not according to the current motor rotating direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold value;

the judging module is specifically configured to judge whether a braking signal is currently received according to whether a braking signal and a current motor rotating speed are currently received or not if the current gear is an R gear and the required gear is a D gear or an S gear, and an absolute value of the current motor rotating speed is not greater than a preset vehicle stationary rotating speed threshold; or judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value.

The invention provides an automobile, which comprises a gear shifter ESK and a vehicle control unit VCU; wherein the content of the first and second substances,

the gear shifter ESK is used for sending a gear shifting request from a current gear to a required gear to the vehicle control unit VCU;

the VCU is used for receiving a gear shifting request from a current gear to a required gear; if the required gear is a P gear, judging whether the current speed of the automobile is not greater than a set P gear locking speed threshold, wherein the P gear locking speed threshold is not 0; and if so, switching the current gear to the required gear.

Furthermore, the gear shifter ESK comprises a reset type gear shifting knob and gear buttons, wherein the gear buttons comprise an S gear button, a D gear button and a P gear button; wherein the content of the first and second substances,

and the gear shifter ESK is used for determining the required gear of a driver according to the switch position triggered when the gear key is pressed down or the reset type gear shifting knob is rotated.

Further, the gear shifter ESK is specifically configured to:

when the automobile is in an initial power-on state, if the P gear key is identified to be pressed, determining that the required gear of a driver is the P gear;

when the current gear of the automobile is not the P gear and the reset type gear shifting knob is located at the original position, if the P gear button is identified to be pressed, the required gear of a driver is determined to be the P gear;

when the current gear of the automobile is not the R gear, if the reset type gear shifting knob is recognized to be rotated, a first switch position is triggered, and the gear required by a driver is determined to be the R gear;

when the current gear of the automobile is not the N gear, if the reset type gear shifting knob is recognized to be rotated, a second switch position is triggered, and the gear required by a driver is determined to be the N gear;

when the current gear of the automobile is not a D gear or an S gear, if the reset type gear shifting knob is recognized to be rotated, the position of a third switch is triggered, and the gear required by a driver is determined to be the D gear;

when the current gear of the automobile is an S gear and the reset type gear shifting knob is located at the original position, if the fact that the D gear button is pressed is recognized, the required gear of a driver is determined to be a D gear;

when the current gear of the automobile is not a D gear or an S gear, if the reset type gear shifting knob is recognized to be rotated, a fourth switch position is triggered, and the gear required by a driver is determined to be the S gear;

when the current gear of the automobile is a D gear, and the reset type gear shifting knob is located at the original point position, if the S gear button is pressed, the required gear of the driver is determined to be the S gear.

Further, the vehicle control unit VCU is further configured to determine whether a brake pedal of the vehicle is pressed down if the current gear is a P gear; if so, switching the current gear to the required gear;

the VCU is further configured to, if the current gear is not a P gear and the required gear is not a P gear, obtain a parameter required by a shift permission state corresponding to the current gear and the required gear, and obtain a current parameter value of the parameter, where the parameter includes at least one of a motor rotation speed, a motor rotation direction, a vehicle speed, and whether a braking signal is received; judging whether the automobile is in a gear shifting allowed state corresponding to the current gear and the required gear or not according to the current parameter value; if so, switching the current gear to the required gear;

the vehicle control unit VCU is specifically configured to, if the current gear is an N gear and the required gear is an R gear, determine whether an absolute value of a current motor rotation speed is not less than a preset vehicle stationary rotation speed threshold according to the current motor rotation speed and a current vehicle speed, where the current vehicle speed is not greater than a preset high-speed driving vehicle speed threshold, and the high-speed driving vehicle speed threshold is greater than the P-gear locking vehicle speed threshold; or judging whether the current motor rotating direction is reverse or not according to the current motor rotating direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold;

the vehicle control unit VCU is specifically configured to, if the current gear is an N gear and the required gear is a D gear or an S gear, determine whether a braking signal is currently received according to whether a braking signal and a current motor speed are currently received, and an absolute value of the current motor speed is not greater than a preset vehicle stationary speed threshold; or judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value; or judging whether the current rotating direction is positive rotation or not according to the current motor rotating direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold value;

the vehicle control unit VCU is specifically configured to, if the current gear is an R gear and the required gear is a D gear or an S gear, determine whether a braking signal is currently received according to whether a braking signal and a current motor speed are currently received, and an absolute value of the current motor speed is not greater than a preset vehicle stationary speed threshold; or judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value.

The invention provides an automobile control method, an automobile control device and an automobile, wherein the method comprises the following steps: receiving a shift request from a current gear to a required gear; if the required gear is a P gear, judging whether the current speed of the automobile is not greater than a set P gear locking speed threshold, wherein the P gear locking speed threshold is not 0; and if so, switching the current gear to the required gear. When other gears are switched to the P gear, the vehicle speed is not greater than the set P gear locking vehicle speed threshold value, the switching to the P gear is allowed, the condition of entering the P gear is relieved to a certain extent, the P gear can be switched when a slope slides, and therefore the corresponding gear is engaged according to the requirements of a driver.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a vehicle control process provided in example 1 of the present invention;

fig. 2 is a schematic structural diagram of an automobile according to embodiment 7 of the present invention;

FIG. 3 is a schematic illustration of an automobile including an instrument ICM in accordance with embodiment 7 of the present invention;

fig. 4 is a schematic structural diagram of an automobile including an IPU according to embodiment 7 of the present invention;

fig. 5 is a schematic view of a shifter provided in embodiment 8 of the present invention;

fig. 6 is a schematic diagram of an automobile control device according to an embodiment of the present invention.

Detailed Description

The embodiment of the invention provides an automobile control method and device and an automobile, and aims to ensure that the automobile is engaged in a corresponding gear according to the requirements of a driver.

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

fig. 1 is a schematic diagram of a control process of an automobile according to an embodiment of the present invention, where the process includes the following steps:

s101: a shift request from a current gear to a demanded gear is received.

The automobile control method provided by the embodiment of the invention is applied to automobiles, and particularly can be applied to a Vehicle Control Unit (VCU) of an automobile.

The vehicle may receive a shift request from a current gear to a required gear, and if the vehicle control unit VCU receives the shift request, the vehicle control unit VCU may specifically receive a shift request sent by a shifter.

S102: if the required gear is a P gear, judging whether the current speed of the automobile is not greater than a set P gear locking speed threshold, wherein the P gear locking speed threshold is not 0; if yes, S103 is carried out; if not, proceed to S104.

A set P range lock vehicle speed threshold value is stored in the automobile in advance, and is not 0, the P range lock vehicle speed threshold value is arbitrary, and may be related to the type of the vehicle and the manufacturer of the vehicle, and may be represented by Vps, and may be 1kpm (kilometers per minute), for example.

If the required gear in the gear shifting request is the P gear, the automobile can judge whether to allow entering the P gear according to the current speed of the automobile and the threshold value of the P gear locking speed.

S103: and switching the current gear to the required gear.

If the current vehicle speed of the automobile is not greater than the P gear locking vehicle speed threshold value, the P gear is considered to be allowed to be locked, namely, the P gear is allowed to be entered, and therefore the current gear can be switched to the required gear, namely, the non-P gear is switched to the P gear.

In the embodiment of the invention, the current vehicle speed is only compared with the P gear locking vehicle speed threshold, so that the condition of entering the P gear is relaxed to a certain extent.

S104: and keeping the current gear unchanged.

If the current vehicle speed of the vehicle is greater than the P-range lock-up vehicle speed threshold, then it may be assumed that P-range is not allowed to be entered, and thus the current gear may be maintained.

Further, the information that the current vehicle speed is greater than the P-gear locking vehicle speed threshold value at the moment can be prompted to the driver, so that the driver can control the vehicle to decelerate to enter the P-gear.

In the embodiment of the invention, when other gears are switched to the P gear, the vehicle speed is not greater than the set P gear locking vehicle speed threshold, the switching to the P gear is allowed, the condition of entering the P gear is relaxed to a certain extent, the P gear can be switched when a slope slides, and therefore, the corresponding gear is engaged according to the requirement of a driver.

Example 2:

on the basis of the above embodiment, in the embodiment of the present invention, if the current gear is the P gear, the method further includes:

judging whether a brake pedal of the automobile is stepped down;

and if so, switching the current gear to the required gear.

If a driver drives the automobile to go out of the P gear, if the gear shifting logic is unreasonable, if the speed is high, the automobile may have the problems of shaking or impact and the like, and in order to ensure the smoothness during gear shifting, the current gear P gear can be switched to the required gear according to the fact that a brake pedal of the automobile is pressed down.

If the current gear in the gear shifting request is the P gear, the automobile can judge whether a brake pedal of the automobile is pressed down, if so, the automobile can confirm that the operation of the current P gear does not cause shaking or impact, and the current gear can be switched to the required gear.

The automobile can also specifically judge whether a brake pedal of the automobile is stepped on or not, and whether the speed of the automobile after being stepped on is smaller than a set speed threshold value or not so as to further ensure the smoothness, wherein the set speed threshold value can be set to be smaller.

If the brake pedal of the automobile is not stepped, the current P gear operation can be confirmed not to cause shaking or impact, and the current P gear can be ensured to be unchanged.

Example 3:

on the basis of the foregoing embodiments, in an embodiment of the present invention, if the current gear is not the P gear and the required gear is not the P gear, the method further includes:

and if so, switching the current gear to the required gear.

If the current gear is not the P gear and the required gear is not the P gear in the gear shifting request received by the automobile, the automobile needs to judge whether the automobile is currently in a gear shifting allowed state corresponding to the current gear and the required gear, and if so, the current gear is switched to the required gear.

If the current gear in the gear shifting request received by the automobile is not the P gear and the required gear is the P gear, the automobile determines the gear shifting permission state corresponding to the current gear and the required gear, and obtains parameters required by the gear shifting permission state corresponding to the current gear and the required gear.

Specifically, the automobile may be pre-stored with a corresponding relationship between a current gear, a required gear, and a shift permission state, and pre-stored with parameters required by the current gear, the required gear, and the shift permission state.

The parameters required by the gear shifting permission state comprise at least one of motor speed, motor rotation direction, vehicle speed and whether a brake signal is received, and further comprise an ON gear awakening signal which is used for indicating that the automobile is in an initial power-ON state, a power-ON state or a power-off state.

After the automobile determines the parameters required by the gear shifting allowed state corresponding to the current gear and the required gear, the current parameter values of the parameters, namely the current parameter values of the automobile, are required to be acquired.

The method includes that the automobile judges whether the automobile is in a gear shifting allowed state corresponding to a current gear and a required gear according to an obtained current parameter value, specifically, whether the current parameter value is matched or consistent with a target parameter value of the gear shifting allowed state corresponding to the current gear and the required gear or not is judged.

If the automobile is determined to be in the gear shifting allowing state corresponding to the current gear and the required gear, the current gear is switched to the required gear, and subsequent driving of a driver is facilitated.

If the automobile is determined not to be in the gear-shifting allowing state corresponding to the current gear and the required gear, the user can be considered to have mistaken gear-shifting operation or incorrect operation during gear shifting, and the current gear can be kept unchanged in order to ensure the safety of the driver.

According to the embodiment of the invention, if the current gear is not the P gear and the required gear is not the P gear in the gear shifting request received by the automobile, and whether the automobile is currently in the gear shifting allowed state corresponding to the current gear and the required gear is judged, the current gear is switched to the required gear, so that the driving requirement of a user can be met and the safety of a driver can be ensured.

Example 4:

on the basis of the foregoing embodiments, in the embodiments of the present invention, if the current gear is an N gear and the required gear is an R gear, the determining, according to the current parameter value, whether the vehicle is in a shift permission state corresponding to the current gear and the required gear includes:

If the current gear is an N gear and the required gear is a D gear or an S gear, judging whether the automobile is in a gear-shifting allowing state corresponding to the current gear and the required gear according to the current parameter value comprises the following steps:

If the current gear is an R gear and the required gear is a D gear or an S gear, judging whether the automobile is in a gear-shifting allowing state corresponding to the current gear and the required gear according to the current parameter value comprises the following steps:

The terminal stores a vehicle static rotation speed threshold value and a high-speed running vehicle speed threshold value, wherein the vehicle static rotation speed threshold value and the high-speed running vehicle speed threshold value can be related to the type of the vehicle and the manufacturer of the vehicle, the vehicle static rotation speed threshold value can be represented by Vs (for example, the vehicle static rotation speed threshold value can be 30 rpm), and when the absolute value of the motor rotation speed is less than the value, the automobile can be considered to be static; the high-speed travel vehicle speed threshold may be represented by Vhs, for example, the high-speed travel vehicle speed threshold may be 5kpm, and when the vehicle speed is greater than this value, the vehicle may be considered to be traveling at a high speed.

The motor speed, the current vehicle speed, the motor rotating direction and whether the brake signal is received can be realized through the actual operation of a driver. And the power-on and power-off states of the automobile can be realized through the actual operation of the driver.

If the current gear in the gear shifting request is an N gear and the required gear is an R gear, in order to realize gear shifting, the automobile can judge whether the absolute value of the rotating speed of the current motor is not less than the static rotating speed threshold value of the automobile or not and the current speed is not greater than the high-speed driving speed threshold value, if so, the automobile is determined to be in a gear shifting allowed state corresponding to the current gear and the required gear, and if not, the automobile is determined not to be in the current gear and the required gear; whether the current motor rotation direction is reverse or not is judged, and the current speed is greater than a high-speed running speed threshold value is judged, if yes, the automobile is determined to be in a gear shifting allowing state corresponding to the current gear and the required gear, and if not, the automobile is determined not to be in the current gear and the required gear.

If the current gear in the gear shifting request is an N gear and the required gear is a D gear or an S gear, in order to realize the gear shifting, the automobile can judge whether a braking signal is currently received or not, and the absolute value of the current motor rotating speed is not greater than a high-speed driving speed threshold value, if so, the automobile is determined to be in a gear shifting allowed state corresponding to the current gear and the required gear, and if not, the automobile is determined not to be in the current gear and the required gear; judging that the absolute value of the current motor rotating speed is not less than a vehicle static rotating speed threshold value, and the current vehicle speed is not greater than a high-speed running vehicle speed threshold value, if so, determining that the vehicle is in a gear shifting allowed state corresponding to the current gear and a required gear, and if not, determining that the vehicle is not in the current gear and the required gear; the current motor rotation direction can be judged to be positive rotation, the current speed is larger than the high-speed running speed threshold value, if yes, the automobile is determined to be in a gear shifting allowed state corresponding to the current gear and the required gear, and if not, the automobile is determined not to be in the current gear and the required gear.

If the current gear in the gear shifting request is an R gear and the required gear is a D gear or an S gear, in order to realize the gear shifting, the automobile can judge whether a braking signal is currently received or not, and the absolute value of the current motor rotating speed is not greater than the vehicle static rotating speed threshold, if so, the automobile is determined to be in a gear shifting allowed state corresponding to the current gear and the required gear, and if not, the automobile is determined not to be in the current gear and the required gear; the absolute value of the current motor rotating speed is judged to be not less than the vehicle static rotating speed threshold value, the current vehicle speed is not greater than the high-speed running vehicle speed threshold value, if yes, the vehicle is determined to be in a gear shifting allowed state corresponding to the current gear and the required gear, and if not, the vehicle is determined not to be in the current gear and the required gear.

When the gear is N gear, when the gear of a running vehicle (R/D/S) is switched, parameters such as vehicle speed, brake signals, motor rotating speed direction and the like need to be judged; the driving gear (R/D/S) can be engaged into the N gear under any vehicle speed or any condition; when the vehicle speed is low (if the vehicle speed is less than a high-speed running vehicle speed threshold value and the absolute value of the motor rotating speed is greater than a vehicle static rotating speed threshold value), the vehicle can be switched between other gears which are not a P gear at will; when the vehicle is stationary, any gear change requires the brake to be pressed, and the condition that the motor rotating speed is less than the vehicle stationary rotating speed threshold value is considered that the vehicle is stationary.

According to the embodiment of the invention, the current gear and the gear shifting allowed state corresponding to the required gear of the automobile are determined, and the current gear is switched to the required gear, so that the driving requirement of a user can be met and the safety of a driver can be ensured.

Example 5:

on the basis of the foregoing embodiments, in an embodiment of the present invention, if it is determined that the vehicle is not in the shift permission state corresponding to the current gear and the required gear according to the current parameter value, the method further includes:

and sending the misoperation prompt information to the driver.

In the foregoing embodiment, in the driving mode, the vehicle control unit VCU may determine whether the vehicle is in the shift permission state corresponding to the current gear and the required gear according to a current parameter value of the vehicle generated by an operation of the user, and when it is determined that the vehicle is not in the shift permission state corresponding to the current gear and the required gear according to the current parameter value, it may be considered that a user has a wrong shift operation, or an operation during shifting is incorrect, so as to improve driving experience for ensuring driving safety, and a prompt message of the wrong operation may be sent to the driver.

Specifically, the prompt information to send the misoperation to the driver may be in the form of voice, text, or image prompting the misoperation information.

The VCU of the vehicle control unit can determine that the vehicle is not in a gear shifting permission state corresponding to the current gear and the required gear, the gear shifting misoperation identification position is abnormal, the abnormal gear shifting misoperation identification position is sent to the instrument ICM of the vehicle, and prompt information of misoperation is displayed on the instrument ICM, so that a driver can sense that misoperation exists.

In addition, the meter ICM may also display a shift indicator lamp to display the current shift position and the shift position required to be shifted, and if the vehicle supports P, R, N, D, S five shift positions, the meter ICM may have a display function of the five shift positions.

Example 6:

on the basis of the above embodiments, in the embodiment of the present invention, the method further includes:

if yes, switching the current gear to a P gear;

and if not, switching the current gear to the N gear.

The embodiment of the invention relates to a strategy judgment of an automobile under an ON gear wake-up signal, and the gear to be switched to according to the current speed can be judged when the automobile is in a power-off state or an initial power-ON state.

And when the automobile is in a power-off state or an initial power-on state, judging that the current speed is not greater than the P gear locking speed threshold.

And if the current vehicle speed is not greater than the P gear locking vehicle speed threshold value, switching the current gear to the P gear and prompting the driver to facilitate subsequent driving of the driver.

If the current vehicle speed is greater than the P gear locking vehicle speed threshold value, the current gear is switched to the N gear, and the current gear is prompted to a driver, so that the subsequent driving of the driver is facilitated.

The shift permission states corresponding to the current position and the required gear of the above-described embodiments are shown in the following table, in which the gear request and the strategic gear are the required gears.

Example 7:

on the basis of the above embodiments, an embodiment of the present invention further provides an automobile, as shown in fig. 2, where the automobile includes: a gear shifter ESK and a vehicle control unit VCU; wherein the content of the first and second substances,

The VCU is further used for judging whether a brake pedal of the automobile is stepped on or not if the current gear is the P gear; and if so, switching the current gear to the required gear.

The VCU is further configured to, if the current gear is not a P gear and the required gear is not a P gear, obtain a parameter required by a shift permission state corresponding to the current gear and the required gear, and obtain a current parameter value of the parameter, where the parameter includes at least one of a motor rotation speed, a motor rotation direction, a vehicle speed, and whether a braking signal is received; judging whether the automobile is in a gear shifting allowed state corresponding to the current gear and the required gear or not according to the current parameter value; and if so, switching the current gear to the required gear.

The vehicle control unit VCU is specifically configured to, if the current gear is an N gear and the required gear is an R gear, determine whether an absolute value of a current motor rotation speed is not less than a preset vehicle stationary rotation speed threshold according to the current motor rotation speed and a current vehicle speed, where the current vehicle speed is not greater than a preset high-speed driving vehicle speed threshold, and the high-speed driving vehicle speed threshold is greater than the P-gear locking vehicle speed threshold; or judging whether the current motor rotating direction is reverse or not according to the current motor rotating direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold.

The vehicle control unit VCU is specifically configured to, if the current gear is an N gear and the required gear is a D gear or an S gear, determine whether a braking signal is currently received according to whether a braking signal and a current motor speed are currently received, and an absolute value of the current motor speed is not greater than a preset vehicle stationary speed threshold; or judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value; or judging whether the current rotation direction is positive rotation or not according to the current motor rotation direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold.

And the VCU is further used for determining that the automobile is not in a gear shifting allowed state corresponding to the current gear and the required gear according to the current parameter value, and sending misoperation prompt information to a driver.

The VCU is further used for judging whether the current vehicle speed is not greater than the P-gear locking vehicle speed threshold value or not if the vehicle is in a power-off state or an initial power-on state; if yes, switching the current gear to a P gear; and if not, switching the current gear to the N gear.

As shown in fig. 3, the vehicle further comprises a meter ICM for displaying the current gear.

As shown in fig. 4, the vehicle further includes a motor controller IPU for controlling a driving state of the vehicle according to a user's operation.

Example 8:

on the basis of the above embodiment, in the embodiment of the invention, the shifter comprises a reset type shifting knob and a gear key, wherein the gear key comprises an S gear key, a D gear key and a P gear key; wherein the content of the first and second substances,

the gear shifter is used for determining the required gear of a driver according to the switch position triggered when the gear key is pressed down or the reset gear shifting knob is rotated.

The shifter is specifically used for:

The embodiment of the invention provides a novel shifter, which comprises a reset type shifting knob and gear keys, wherein the gear keys comprise an S-gear key, a D-gear key and a P-gear key, in addition, a display panel of the shifter can also be provided with P, R, N, D, S five gear indicator lamps, and the corresponding gear indicator lamps are lightened according to the current gear and the gear to be switched.

When the vehicle control unit determines that the gear shifting state is met, the shifted gears are sent to the instrument ICM and the gear shifter ESK, the instrument ICM displays P, R, N, D, S the gears to be shifted in the five gears, and a panel of the gear shifter ESK displays P, R, N, D, S gear indicator lamps corresponding to the shifted gears in the five gears.

The novel shifter provided by the embodiment of the invention can be shown in fig. 5, the display panel of the shifter can also be provided with P, R, N, D, S five shift indicator lamps, the reset type shift knob of the shifter has five positions which are divided into an original position, the knob has two strokes (left and right as shown in fig. 5) respectively leftwards and rightwards, and the knob automatically rotates back to the original position (located between the position 2 and the position 3) after rotating leftwards or rightwards corresponding to the

positions

1, 2, 3 and 4 in fig. 5.

The first switch position, the second switch position, the third switch position and the fourth switch position may be the same or different.

The gear shifter determines a required gear of a driver according to a switch position triggered when a gear key is pressed or a reset type gear shifting knob is rotated, generates a gear shifting request from the current gear to the required gear according to the obtained current gear, and sends the gear shifting request to the VCU of the whole vehicle controller.

The occurrence of a P range request is confirmed in the presence of two situations, namely, the driver's demanded gear is P range:

firstly, when an automobile is in an initial power-on state, if a P gear button is detected to be pressed, determining that a required gear of a driver is a P gear;

and secondly, when the current gear of the automobile is not the P gear, namely the R gear, the N gear, the D gear or the S gear, and the reset type gear shifting knob is in the original position (located in the middle of the position 2 and the position 3), if the P gear button is detected to be pressed, the gear required by the driver is determined to be the P gear.

Confirming that an R range request has occurred in a case where there is one of a driver's required gear is an R range:

when the current gear of the automobile is not the R gear, namely the P gear, the N gear, the D gear or the S gear, if the reset type gear shifting knob is detected to be rotated to trigger a first switch position, such as a left-hand stroke 1 (triggering a position 2 in fig. 5) or a right-hand stroke 1 (triggering a position 3 in fig. 5), the required gear of the driver is determined to be the R gear.

Determining that an N-range request is present, i.e., that the driver's desired gear is N-range, if one of:

when the current gear of the automobile is not the N gear, namely the P gear, the R gear, the D gear or the S gear, if the reset type gear shifting knob is detected to be rotated, a second switch position, such as a left-hand stroke 2 (triggering a position 1 in fig. 5), is triggered, and the gear required by the driver is determined to be the N gear.

The "forward gear memory state" may be stored in the shifter, and the "forward gear memory state" may be maintained each time the user operates the reset type shift knob to the forward gear without changing the "forward gear memory state" by the driver.

The occurrence of a D range request, i.e. the driver's demanded gear D range, is determined in two cases:

first, when the current gear of the vehicle is not D gear and not S gear, i.e., P gear, R gear or N gear, if it is detected that the reset shift knob is rotated, a third switch position, e.g., right-hand stroke 2 (position 4 in fig. 5 is triggered), is triggered, and if the "forward memory state" is D gear, it is determined that the driver' S desired gear is D gear.

Secondly, when the current gear of the automobile is an S gear and the reset type gear shifting knob is located at the original position, if the fact that a D gear button is pressed is detected, the required gear of the driver is determined to be the D gear, at the moment, the driver changes a forward gear memory state, and therefore the forward gear memory state is changed from the S gear to the D gear.

An S-range request is determined to occur, i.e. the driver' S demanded gear S-range, in two cases:

firstly, when the current gear of the automobile is not the D gear and the S gear, namely the P gear, the R gear or the N gear, if the reset type gear shifting knob is detected to be rotated, a fourth switch position is triggered, such as a right-hand travel 2 (a position 4 in fig. 5 is triggered), and if a forward gear memory state is the S gear, the gear required by the driver is determined to be the S gear, and at the moment, the fourth switch position is consistent with the third switch position.

Secondly, when the current gear of the automobile is a D gear and the reset type gear shifting knob is located at the original position, if the S gear key is detected to be pressed down, the required gear of the driver is determined to be the S gear, and at the moment, the driver changes the forward gear memory state, so that the forward gear memory state is changed from the D gear to the S gear.

In the gear shifting operation under other conditions, the gear shifter ESK takes the current gear as a required gear, namely, the gear is kept unchanged.

The novel gear shifter provided by the embodiment of the invention can be used for facilitating the gear shifting operation of a driver and ensuring that the driver is in a safe state to shift gears.

Fig. 6 is a schematic diagram of an automobile control device according to an embodiment of the present invention, where the device includes:

a receiving module 601, configured to receive a shift request from a current gear to a required gear;

a determining module 602, configured to determine whether a current vehicle speed of the vehicle is not greater than a set P-gear lock vehicle speed threshold if the required gear is a P gear, where the P-gear lock vehicle speed threshold is not 0;

a control module 603, configured to switch the current gear to the required gear when the determination result of the determining module 602 is yes.

The determining module 602 is further configured to determine whether a brake pedal of the vehicle is pressed down if the current gear is a P gear;

The determining module 602 is further configured to, if the current gear is not a P gear and the required gear is not a P gear, obtain a parameter required by a shift permission state corresponding to the current gear and the required gear, and obtain a current parameter value of the parameter, where the parameter includes at least one of a motor rotation speed, a motor rotation direction, a vehicle speed, and whether a braking signal is received; judging whether the automobile is in a gear shifting allowed state corresponding to the current gear and the required gear or not according to the current parameter value;

The determining module 602 is specifically configured to determine, if the current gear is an N gear and the required gear is an R gear, according to a current motor speed and a current vehicle speed, whether an absolute value of the current motor speed is not less than a preset vehicle stationary speed threshold, and the current vehicle speed is not greater than a preset high-speed driving vehicle speed threshold, where the high-speed driving vehicle speed threshold is greater than the P-gear locking vehicle speed threshold; or judging whether the current motor rotating direction is reverse or not according to the current motor rotating direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold.

The determining module 602 is specifically configured to determine whether a braking signal is currently received according to whether a braking signal and a current motor speed are currently received if the current gear is an N gear and the required gear is a D gear or an S gear, and an absolute value of the current motor speed is not greater than a preset vehicle stationary speed threshold; or judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value; or judging whether the current rotation direction is positive rotation or not according to the current motor rotation direction and the current vehicle speed, wherein the current vehicle speed is greater than the high-speed running vehicle speed threshold.

The determining module 602 is specifically configured to determine whether a braking signal is currently received according to whether a braking signal and a current motor speed are currently received if the current gear is an R gear and the required gear is a D gear or an S gear, where an absolute value of the current motor speed is not greater than a preset vehicle stationary speed threshold; or judging whether the absolute value of the current motor rotating speed is not less than the vehicle static rotating speed threshold value or not according to the current motor rotating speed and the current vehicle speed, wherein the current vehicle speed is not greater than a preset high-speed running vehicle speed threshold value.

The device further comprises:

and the prompting module is used for determining that the automobile is not in the gear shifting allowable state corresponding to the current gear and the required gear according to the current parameter value, and sending misoperation prompting information to a driver.

The determining module 602 is further configured to determine whether a current vehicle speed is not greater than the P-range lock vehicle speed threshold if the vehicle is in a power-off state or an initial power-on state;

the control module 603 is configured to switch the current gear to the P gear when the determination result of the determining module 602 is yes; and when the judgment result of the judgment module 602 is negative, switching the current gear to the N gear.

For the system/apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.

It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A control method for a vehicle, applied to the vehicle, includes:

receiving a shift request from a current gear to a required gear;

if so, switching the current gear to the required gear;

the method further comprises the following steps:

if yes, switching the current gear to a P gear;

if not, switching the current gear to an N gear;

if the current gear is not P gear and the demanded gear is not P gear, the method further comprises:

acquiring parameters required by the current gear and a gear shift allowing state corresponding to the required gear, and acquiring current parameter values of the parameters, wherein the parameters comprise at least one of motor rotating speed, motor rotating direction, vehicle speed and whether a brake signal is received, and the parameters further comprise an ON gear awakening signal which is used for indicating that the automobile is in an initial power-ON state, a power-ON state or a power-off state;

and if so, switching the current gear to the required gear.

2. The method of claim 1, wherein if the current gear is P gear, the method further comprises:

judging whether a brake pedal of the automobile is stepped down;

and if so, switching the current gear to the required gear.

3. The method of claim 1, wherein if the current gear is an N gear and the demanded gear is an R gear, the determining whether the vehicle is in a shift-allowed state corresponding to the current gear and the demanded gear according to the current parameter values comprises:

4. The method of claim 1, wherein if the current gear is an N gear and the required gear is a D gear or an S gear, the determining whether the vehicle is in a shift permission state corresponding to the current gear and the required gear according to the current parameter values comprises:

5. The method of claim 1, wherein if the current gear is an R gear and the required gear is a D gear or an S gear, the determining whether the vehicle is in a shift permission state corresponding to the current gear and the required gear according to the current parameter values comprises:

6. A control device for a vehicle, characterized by being applied to a vehicle, the device comprising:

the control module is used for switching the current gear to the required gear when the judgment result of the judgment module is yes;

the judging module is further used for judging whether the current vehicle speed is not greater than the P-gear locking vehicle speed threshold value or not if the vehicle is in a power-off state or an initial power-on state;

the control module is used for switching the current gear to the P gear when the judgment result of the judgment module is yes; when the judgment result of the judgment module is negative, the current gear is switched to N gear;

the judging module is further configured to, if the current gear is not a P gear and the required gear is not a P gear, obtain a parameter required by a shift permission state corresponding to the current gear and the required gear, and obtain a current parameter value of the parameter, where the parameter includes at least one of a motor rotation speed, a motor rotation direction, a vehicle speed, and whether a braking signal is received, and the parameter further includes an ON gear wake-up signal, where the ON gear wake-up signal is used to indicate that an automobile is in an initial power-ON state, a power-ON state, or a power-off state; and judging whether the automobile is in a gear shifting allowed state corresponding to the current gear and the required gear according to the current parameter value.

7. The device of claim 6, wherein the determining module is further configured to determine whether a brake pedal of the vehicle is pressed if the current gear is a P gear;

8. An automobile, characterized in that the automobile comprises a gear shifter ESK and a vehicle control unit VCU; wherein the content of the first and second substances,

the VCU is used for receiving a gear shifting request from a current gear to a required gear; if the required gear is a P gear, judging whether the current speed of the automobile is not greater than a set P gear locking speed threshold, wherein the P gear locking speed threshold is not 0; if so, switching the current gear to the required gear;

the VCU is further used for judging whether the current vehicle speed is not greater than the P-gear locking vehicle speed threshold value or not if the vehicle is in a power-off state or an initial power-on state; if yes, switching the current gear to a P gear; if not, switching the current gear to an N gear;

the VCU is further configured to, if the current gear is not a P gear and the required gear is not a P gear, obtain a parameter required by a shift permission state corresponding to the current gear and the required gear, and obtain a current parameter value of the parameter, where the parameter includes at least one of a motor rotation speed, a motor rotation direction, a vehicle speed, and whether a braking signal is received, and the parameter further includes an ON gear wake-up signal used to indicate that the vehicle is in an initial power-ON state, a power-ON state, or a power-off state; judging whether the automobile is in a gear shifting allowed state corresponding to the current gear and the required gear or not according to the current parameter value; and if so, switching the current gear to the required gear.

9. The vehicle of claim 8, wherein the gear shifter ESK comprises a reset shift knob, a shift key, the shift key comprising an S-shift key, a D-shift key, a P-shift key; wherein the content of the first and second substances,

10. The motor vehicle according to claim 9, characterized in that the gear shift ESK is specifically configured for:

11. The vehicle of claim 8, wherein the VCU is further configured to determine whether a brake pedal of the vehicle is pressed if the current gear is a P gear; if so, switching the current gear to the required gear;