CN-116749945-B - Vehicle control device, vehicle control method, and storage medium

Abstract

A control device for a vehicle, a control method for a vehicle, and a storage medium capable of reducing the computational load in energy management plan estimation while suppressing a decrease in computational accuracy. The control device includes an information acquisition unit that acquires information on a predetermined travel route, a first generation unit that generates first travel energy data per unit time required for traveling on the predetermined travel route, a second generation unit that calculates a travel energy change per unit time based on the first travel energy data, and generates second travel energy data by thinning out data representing travel energy in a period in which the change amount is smaller than a predetermined value from the first travel energy data, and a charge/discharge planning unit that generates a charge/discharge plan of the power storage device during traveling on the predetermined travel route based on the second travel energy data.

Inventors

• NISHIO YUI

Assignees

• 本田技研工业株式会社

Dates

Publication Date

20260512

Application Date

20230208

Priority Date

20220314

Claims (10)

1. 1. A control device for a vehicle, the vehicle comprising a power source, a power storage device, and an electric motor connected to drive wheels, the electric motor being drivable by supply of electric power from the power storage device and capable of supplying regenerative electric power generated during a regenerative operation to the power storage device, The control device is provided with: An information acquisition unit that acquires information on a predetermined travel path of the vehicle; a first generation portion that generates first running energy data representing running energy per unit time required for the vehicle to run on a predetermined running path based on information related to the predetermined running path of the vehicle; a second generation unit that calculates a change amount of the running energy per unit time based on the first running energy data, and that generates second running energy data by thinning out data representing the running energy for a period of time in which the change amount of the running energy per unit time is smaller than a predetermined value from the first running energy data, and And a charge/discharge planning unit that generates a charge/discharge plan of the power storage device when the vehicle travels on the predetermined travel path, based on the second travel energy data.
2. 2. The control device of a vehicle according to claim 1, wherein, The control device further includes a time-series data interpolation unit that interpolates a charge/discharge plan for a period of time corresponding to the travel energy data that has been thinned out by the second generation unit by linear interpolation with respect to the charge/discharge plan.
3. 3. The control device for a vehicle according to claim 2, wherein, The control device further includes a control unit that controls charging and discharging of the power storage device based on the plan data interpolated by the time-series data interpolation unit when the vehicle is traveling.
4. 4. The control device of a vehicle according to claim 1, wherein, The charge/discharge planning unit generates the charge/discharge plan that optimizes energy use efficiency by repeatedly executing a cycle simulation when the vehicle is traveling on the predetermined travel path.
5. 5. The control device for a vehicle according to claim 4, wherein, The charge/discharge planning unit repeatedly executes the cyclic simulation while adjusting a parameter value indicating a strength of a tendency of the electric storage device to be more easily charged or discharged until a predetermined optimization convergence condition is satisfied.
6. 6. The control device for a vehicle according to claim 5, wherein, The optimal convergence condition is a case where a remaining capacity of the power storage device becomes a prescribed value at a point in time when the vehicle reaches a terminal end of the predetermined travel path.
7. 7. The control device for a vehicle according to any one of claims 1 to 6, wherein, The information related to the predetermined travel path includes information indicating a vehicle speed and information indicating a road gradient.
8. 8. The control device for a vehicle according to any one of claims 1 to 6, wherein, The first generation unit shifts the respective values of the running energy per unit time by a predetermined value in consideration of the auxiliary machine power consumption.
9. 9. A control method of a vehicle, which is a control method of a vehicle executed by a computer mounted on the vehicle, The control method of the vehicle includes the following processes: Acquiring information related to a predetermined travel path of the vehicle; generating first running energy data representing running energy per unit time required for the vehicle to run on a predetermined running path based on information related to the predetermined running path of the vehicle; Calculating a change amount of the running energy per unit time based on the first running energy data, and thinning out data representing the running energy for a period of time in which the change amount of the running energy per unit time is smaller than a prescribed value from the first running energy data, thereby generating second running energy data, and A charge-discharge plan of the power storage device when the vehicle travels on the predetermined travel path is generated based on the second travel energy data.
10. 10. A storage medium which is a non-transitory storage medium storing a program and which can be read by a computer, wherein, The program causes a computer mounted on a vehicle to execute: Acquiring information related to a predetermined travel path of the vehicle; generating first running energy data representing running energy per unit time required for the vehicle to run on a predetermined running path based on information related to the predetermined running path of the vehicle; Calculating a change amount of the running energy per unit time based on the first running energy data, and thinning out data representing the running energy for a period of time in which the change amount of the running energy per unit time is smaller than a prescribed value from the first running energy data, thereby generating second running energy data, and A charge-discharge plan of the power storage device when the vehicle travels on the predetermined travel path is generated based on the second travel energy data.

Description

Vehicle control device, vehicle control method, and storage medium The present application claims priority based on japanese patent application No. 2022-038821, filed on day 14, 3, 2022, and the contents of which are hereby incorporated by reference. Technical Field The invention relates to a control device for a vehicle, a control method for a vehicle, and a storage medium. Background Hybrid vehicles having a power source such as an internal combustion engine, an electric storage device, and an electric motor are being used. The electric motor is connected to the drive wheel and can be driven by power supply from the power storage device. The regenerative power generated during the regenerative operation can be supplied to the power storage device. Conventionally, a technique related to setting of a charge/discharge schedule in an electric storage device of such a hybrid vehicle has been proposed. In order to properly set the charge/discharge schedule, it is necessary to predict the required travel energy for each section of the travel route based on the travel route information from the departure point to the destination, and to estimate an energy management schedule in which the energy use efficiency is optimal by repeating the cyclic simulation. However, particularly in the case where the travel path is long, the calculation amount in the optimization calculation of the energy use efficiency becomes enormous, and therefore it is difficult to install it practically. In contrast, in the vehicle control device described in japanese patent No. 5780354, when the travel path is long, the travel energy in the intermediate portion of the travel path is predicted and calculated with a relatively coarse granularity by setting the length of the section in the intermediate portion to be longer than the lengths of the sections in the vicinity of the departure point and the vicinity of the destination point. This reduces the amount of calculation in the predictive calculation of the running energy. Disclosure of Invention However, in the vehicle control device described in japanese patent No. 5780354, when there is an event in which the running energy greatly changes, for example, a steep upward slope, in a section set as a middle portion of a relatively long running path, there is a problem in that the calculation accuracy in the calculation of the prediction of the running energy is lowered. An object of an aspect of the present invention is to provide a control device for a vehicle, a control method for a vehicle, and a storage medium, which can reduce a calculation load in estimation of an energy management plan while suppressing a decrease in calculation accuracy. The vehicle control device, the vehicle control method, and the storage medium of the present invention employ the following configurations. (1) The control device for a vehicle according to an aspect of the present invention includes a power source, a power storage device, and an electric motor that is connected to a drive wheel and is capable of being driven by power supply from the power storage device and is capable of supplying regenerated power generated during a regeneration operation to the power storage device, wherein the control device includes an information acquisition unit that acquires information on a predetermined travel path of the vehicle, a first generation unit that generates first travel energy data indicating a travel energy per unit time required for the vehicle to travel on the predetermined travel path based on the information on the predetermined travel path of the vehicle, a second generation unit that calculates a change amount of the travel energy per unit time based on the first travel energy data and that eliminates data of the travel energy representing a time period in which the change amount per unit time is smaller than a predetermined value from the first travel energy data, and a charge/discharge unit that generates the travel energy per unit on the basis of the predetermined travel energy. (2) In the aspect of (1) above, the control device further includes a time-series data interpolation unit that interpolates a charge/discharge plan for a period of time corresponding to the travel energy data that has been thinned out by the second generation unit by linear interpolation with respect to the charge/discharge plan. (3) In the aspect (2), the control device further includes a control unit that controls charging and discharging of the power storage device based on the plan data interpolated by the time-series data interpolation unit when the vehicle is traveling. (4) In any one of the above (1) to (3), the charge/discharge planning unit generates the charge/discharge plan in which energy use efficiency is optimal by repeatedly executing a cyclic simulation in a case where the vehicle travels on the predetermined travel path. (5) In the aspect of (4) above, the charge/discharge planning unit repeatedly executes the c