KR-20260064529-A - BATTERY ELECTRIC VEHICLE, CONTROL DEVICE, AND CONTROL METHOD

KR20260064529AKR 20260064529 AKR20260064529 AKR 20260064529AKR-20260064529-A

Abstract

The electric vehicle is equipped with one or more processors (102) that control the output of the electric motor (2) based on the operation state of the driving control member (22, 24) and the driving state of the electric vehicle, and control the gear stage of the transmission (18) according to a shift schedule. The first shift schedule is a shift schedule when the electric vehicle is not in on-demand mode. When the electric vehicle is in on-demand mode, the one or more processors (102) set the shift schedule to a second shift schedule. The second shift schedule is configured such that, compared to the first shift schedule, the change to a high-speed gear stage is suppressed.

Inventors

후지이 가즈키

Assignees

도요타 지도샤（주）

Dates

Publication Date: 20260507
Application Date: 20251015
Priority Date: 20241031

Claims (14)

In electric vehicles, As a driving source, an electric motor (2) and, Driving operation member (22, 24) configured to be used for driving; A transmission (18) configured to change the output of the electric motor (2) according to the gear stage and transmit it to the drive wheel of the electric vehicle; and It includes one or more processors (102), The above one or more processors (102) are, The output of the electric motor (2) is controlled based on the operation state of the above-mentioned driving control member (22, 24) and the driving state of the above-mentioned electric vehicle, and Communicating with one or more memory devices (103)—the one or more memory devices (103) are configured to manage multiple on-demand models that model multiple virtual mobilitys having different driving environment characteristics regarding the driver's driving operations—, When the electric vehicle is not in on-demand mode, the gear stage of the transmission (18) is controlled according to the first shift schedule, and When the above electric vehicle is in on-demand mode, The gear stage of the transmission (18) is controlled according to the second shift schedule—the second shift schedule is configured such that, compared to the first shift schedule, the change to the high-speed gear stage is suppressed—, A target on-demand model corresponding to a target virtual mobility selected among the plurality of virtual mobilitys is obtained from the one or plurality of memory devices (103), and Based on the operation state of the above-mentioned driving operation member (22, 24) and the above-mentioned driving state of the above-mentioned electric vehicle, the virtual acceleration of the above-mentioned target virtual mobility for the driver's driving operation is calculated using the above-mentioned target on-demand model, and An electric vehicle configured to control the output of the electric motor (2) so that the acceleration of the electric vehicle becomes the virtual acceleration.
In Article 1, An electric vehicle further comprising the above one or more memory devices (103).
In Article 1, The above second shift schedule is configured such that, as long as the maximum driving force that the electric vehicle can output at the current speed of the electric vehicle is maintained, a change to the gear stage on the high-speed side is not made.
In Article 1, The above second shift schedule is configured to be the gear stage with the maximum gear ratio, regardless of the operating state of the driving operating member (22, 24) and the driving state of the electric vehicle.
In Article 1, When the electric vehicle is in on-demand mode, the one or more processors (102) additionally, Determining whether the above electric vehicle is in a fuel efficiency priority situation where prioritizing fuel efficiency is required, and An electric vehicle configured to control the gear stage of the transmission (18) according to the first shift schedule while the electric vehicle is in the fuel efficiency priority situation.
In Article 5, When the electric vehicle is in on-demand mode, the one or more processors (102) acquire the charge state of the battery of the electric vehicle, and An electric vehicle configured to determine that the electric vehicle is in a fuel efficiency priority situation when the charge state of the battery is below a threshold value.
In Article 1, When the electric vehicle is in on-demand mode, the one or more processors (102) additionally, Determining whether the above electric vehicle is in a high-speed driving situation where high-speed driving is required, and An electric vehicle configured to control the gear stage of the transmission (18) according to the first shift schedule while the electric vehicle is in the high-speed driving situation.
In Article 1, When the above electric vehicle is in on-demand mode, The above one or more processors (102) additionally, An electric vehicle configured to control the gear stage of the transmission (18) according to the first shift schedule rather than the second shift schedule when the above-mentioned target virtual mobility corresponds to any one or a plurality of specific mobilitys.
In any one of paragraphs 1 through 8, When the electric vehicle is in on-demand mode, the one or more processors (102) are, Calculate the target driving force of the electric vehicle to make the acceleration of the electric vehicle the virtual acceleration, and An electric vehicle configured to change the motor torque output by the electric motor (2) to provide the above target driving force to the electric vehicle.
In any one of paragraphs 1 through 8, Each of the above plurality of on-demand models has a parameter related to the operating environment characteristics, and When the electric vehicle is in on-demand mode, the electric vehicle is configured such that one or more processors (102) set the parameters of the target on-demand model according to the target virtual mobility.
In any one of paragraphs 1 through 8, Includes more speakers, When the electric vehicle is in on-demand mode, the one or more processors (102) additionally, Based on the operation state of the above-mentioned driving operation member (22, 24) and the above-mentioned driving state of the above-mentioned electric vehicle, a virtual sound that must be heard by the driver in the above-mentioned virtual mobility is generated for the driving operation of the driver using the above-mentioned target on-demand model, and An electric vehicle configured to output the above virtual sound from the above speaker.
In Article 11, The above plurality of virtual mobility includes engine vehicles equipped with internal combustion engines, and An electric vehicle, wherein when the target virtual mobility is the engine vehicle, the virtual sound is a pseudo-engine sound generated by the internal combustion engine of the target virtual mobility.
An electric motor (2) as a driving source, and A driving operation member (22, 24) configured to be used for driving, and A transmission (18) configured to change the output of the above electric motor (2) according to the gear stage and transmit it to the drive wheel of the electric vehicle In the control device of the electric vehicle having the above, The above control device includes one or more processors (102), and The above one or more processors (102) are, The output of the electric motor (2) is controlled based on the operation state of the above-mentioned driving control member (22, 24) and the driving state of the above-mentioned electric vehicle, and Communicating with one or more memory devices (103)—the one or more memory devices (103) are configured to manage multiple on-demand models that model multiple virtual mobilitys having different driving environment characteristics for the driver's driving operations—, When the electric vehicle is not in on-demand mode, the gear stage of the transmission (18) is controlled according to the first shift schedule, and When the above electric vehicle is in on-demand mode, The gear stage of the transmission (18) is controlled according to the second shift schedule—the second shift schedule is configured such that, compared to the first shift schedule, the change to the gear stage on the high-speed side is suppressed—, A target on-demand model corresponding to a target virtual mobility selected among the plurality of virtual mobilitys is obtained from the one or plurality of memory devices (103), and Based on the operation state of the above-mentioned driving operation member (22, 24) and the above-mentioned driving state of the above-mentioned electric vehicle, the virtual acceleration of the above-mentioned target virtual mobility for the driver's driving operation is calculated using the above-mentioned target on-demand model, and A control device configured to control the output of the electric motor (2) so that the acceleration of the electric vehicle is the virtual acceleration.
An electric motor (2) as a driving source, and A driving operation member (22, 24) configured to be used for driving, and A transmission (18) configured to change the output of the above electric motor (2) according to the gear stage and transmit it to the drive wheel of the electric vehicle, and control device (101) In a control method for an electric vehicle equipped with, Controlling the output of the electric motor (2) based on the operation state of the above-mentioned driving control member and the driving state of the above-mentioned electric vehicle; Communicating with one or more memory devices (103)—the one or more memory devices (103) are configured to manage multiple on-demand models that model multiple virtual mobilitys having different driving environment characteristics regarding the driver's driving operation—; When the electric vehicle is not in on-demand mode, controlling the gear stage of the transmission (18) according to the first shift schedule; When the above electric vehicle is in on-demand mode, Controlling the gear stage of the transmission (18) according to the second shift schedule—the second shift schedule is configured such that, compared to the first shift schedule, the change to the gear stage on the high-speed side is suppressed—; Acquiring a target on-demand model corresponding to a target virtual mobility selected among the plurality of virtual mobilitys from the one or plurality of memory devices (103); Calculating the virtual acceleration of the target virtual mobility for the driver's driving operation using the target on-demand model based on the operation state of the driving operation member (22, 24) and the driving state of the electric vehicle; and A control method comprising controlling the output of the electric motor (2) to make the acceleration of the electric vehicle the virtual acceleration.

Description

Battery Electric Vehicle, Control Device, and Control Method The present disclosure relates to an electric vehicle having an electric motor as a driving source, an electric vehicle control device, and a control method. In particular, the present disclosure relates to an electric vehicle having a transmission that varies the output of the electric motor according to the gear stage and transmits it to the driving wheels. An electric motor can be controlled to output a desired motor torque by controlling the applied voltage or field. Utilizing this, a technology is being considered to reproduce various driving sensations in an electric vehicle by appropriately controlling the electric motor of the electric vehicle. One of the elements characterizing driving sensation is the sense of acceleration in response to the driver's maneuvers. Acceleration is a key factor in determining when a driver experiences pleasure while driving. In particular, preferences regarding acceleration vary from driver to driver. Furthermore, drivers may wish to enjoy the acceleration sensations of various types of mobility depending on their mood. Accordingly, the inventors related to the present disclosure are considering an "on-demand mode" that pseudo-reproduces the acceleration sensation of multiple virtual mobilities in a single electric vehicle by using multiple models that model multiple virtual mobilities. In the on-demand mode, the electric motor is controlled to reproduce the acceleration characteristics of the electric vehicle when a selected virtual mobility among multiple virtual mobilities is driven. However, conventional electric vehicles equipped with a transmission have been considered. For example, Japanese Patent Publication No. 2019-178741 discloses a technology for improving driving performance by shortening shifting time in relation to an electric vehicle equipped with a transmission. By equipping an electric vehicle with a transmission, the power performance of the electric vehicle can be improved. In addition, the following Japanese Patent Publication No. 2018-191366 is a document indicating the level of technology in this technical field. Consider the case where an electric vehicle equipped with a transmission is driven in on-demand mode. The electric vehicle in on-demand mode is controlled to reproduce the acceleration characteristics of virtual mobility in response to the driver's driving operations. Meanwhile, the transmission is controlled according to a predetermined shift schedule in the electric vehicle. Because of this, there was a possibility that the reproducibility of the acceleration characteristics of virtual mobility could be compromised, as a downshift of the gear stage occurs depending on the driver's driving operations. For example, this is the case where the driver performs a kick-down of the accelerator pedal to rapidly accelerate the electric vehicle while the electric vehicle is driving normally at medium to high speeds. The present disclosure provides a technology that can improve the reproducibility of acceleration characteristics of virtual mobility in an electric vehicle equipped with a transmission, an electric vehicle control device, and a control method. A first embodiment of the present disclosure relates to an electric vehicle having an electric motor as a driving source. The electric vehicle comprises a driving control member configured to be used for driving, a transmission configured to change the output of the electric motor according to a gear stage and transmit it to the driving wheels of the electric vehicle, and one or more processors. The one or more processors are configured to control the output of the electric motor based on the operating state of the driving control member and the driving state of the electric vehicle. The one or more processors are configured to communicate with one or more memory devices. The one or more memory devices are configured to manage a plurality of on-demand models that model a plurality of virtual mobilitys having different driving environment characteristics regarding the driver's driving operation. The one or more processors are configured to control the gear stage of the transmission according to a first shift schedule when the electric vehicle is not in on-demand mode. The above one or more processors are configured to control the gear stage of the transmission according to a second shift schedule when the electric vehicle is in on-demand mode, acquire a target on-demand model corresponding to a target virtual mobility selected among the plurality of virtual mobilitys from the one or more memory devices, calculate a virtual acceleration of the target virtual mobility for the driver's driving operation using the target on-demand model based on the operation state of the driving operation member and the driving state of the electric vehicle, and control the output of the electric motor so that the acceleration of the electric vehicle is t