US-20260124948-A1 - VEHICLE SYSTEMS AND METHODS FOR COMPENSATING SCHEDULED BATTERY CHARGING

US20260124948A1US 20260124948 A1US20260124948 A1US 20260124948A1US-20260124948-A1

Abstract

A vehicle system includes a database and a control module. The control module is configured to determine a plurality of compensation factors for a plurality of planned charge power values, each compensation factor determined based on a system weight and an error between an estimated energy provided for a charging timeslot and an actual energy provided during the charging timeslot for charging a battery in a vehicle, store, in the database, each of the plurality of compensation factors specific to one of the planned charge power values, select one of the stored compensation factors from the database based on a subsequent planned charge power value for charging the battery in the vehicle, and determine an adjusted time duration for charging the battery in the vehicle based on the selected compensation factor. Other example vehicle systems and control methods are also disclosed.

Inventors

Cameron Christopher Rose
Paul Guillermo Otanez

Assignees

GM Global Technology Operations LLC

Dates

Publication Date: 20260507
Application Date: 20241101

Claims (20)

1 . A vehicle system for improving time duration estimates for charging a battery in a vehicle based on a charging schedule including charging timeslots, each charging timeslot having an estimated time duration and a corresponding planned charge power value, the vehicle system comprising: a database; and a control module in communication with the database, the control module configured to: determine a plurality of compensation factors for a plurality of planned charge power values, each compensation factor determined based on a system weight and an error between an estimated energy provided for a charging timeslot of the charging timeslots and an actual energy provided during the charging timeslot for charging the battery in the vehicle; store, in the database, each of the plurality of compensation factors specific to one of the planned charge power values; select one of the stored compensation factors from the database based on a subsequent planned charge power value for charging the battery in the vehicle; and determine an adjusted time duration for charging the battery in the vehicle based on the selected compensation factor.
2 . The vehicle system of claim 1 , further comprising a vehicle charging control module positioned in the vehicle and in communication with the control module, the vehicle charging control module is configured to: schedule a charging session for the battery in the vehicle based on the adjusted time duration; and control charging of the battery in response to the scheduled charging session.
3 . The vehicle system of claim 2 , wherein the vehicle charging control module is configured to schedule the charging session based on the adjusted time duration and a defined charge competition time for the battery.
4 . The vehicle system of claim 2 , wherein the vehicle charging control module is configured to schedule the charging session based on the adjusted time duration and off-peak hours for a power system to charge the battery.
5 . The vehicle system of claim 1 , further comprising a display module positioned in the vehicle and in communication with the control module, the display module configured to: receive the adjusted time duration for charging the battery in the vehicle; and display the adjusted time duration.
6 . The vehicle system of claim 5 , further comprising a vehicle charging control module positioned in the vehicle, wherein: the display module is configured to display an input selectable by a user to indicate approval of the adjusted time duration; and the vehicle charging control module is configured to control charging of the battery in the vehicle in response to the user selecting the input indicating approval of the adjusted time duration.
7 . The vehicle system of claim 1 , wherein the control module is configured to determine at least one of the compensation factors based on a previous compensation factor for the same planned charge power value.
8 . The vehicle system of claim 1 , wherein the control module is configured to: determine an adjusted energy based on the estimated energy and the selected compensation factor; and determine the adjusted time duration for charging the battery in the vehicle based on the adjusted energy.
9 . The vehicle system of claim 1 , wherein the control module is configured to determine the system weight based on one or more conditions associated with charging the battery in the vehicle.
10 . The vehicle system of claim 9 , wherein the one or more conditions includes at least one of a time duration factor, an energy factor, a battery temperature factor, a battery state of health factor, a charging current type factor, and a charging location factor.
11 . The vehicle system of claim 9 , wherein the control module is configured to assign weight values for the one or more conditions and determine the system based on the one or more conditions and their assigned weight values.
12 . The vehicle system of claim 11 , wherein the control module is configured to: determine the estimated energy provided for the charging timeslot based on the estimated time duration and the corresponding planned charge power value specific to the charging timeslot; and determine the actual energy provided during the charging timeslot based on an actual charge power value and an actual time duration for charging the battery in the vehicle.
13 . A vehicle system for improving time duration estimates for charging a battery in a vehicle based on a charging schedule including charging timeslots, each charging timeslot having an estimated time duration and a corresponding planned charge power value, the vehicle system comprising: a database configured to store a plurality of compensation factors for a plurality of planned charge power values; and a control module in communication with the database, the control module configured to: determine an estimated energy provided for a charging timeslot of the charging timeslots based on the estimated time duration and the corresponding planned charge power value specific to the charging timeslot; determine an actual energy provided during the charging timeslot based on an actual charge power value and an actual time duration for charging the battery in the vehicle; determine an error between the estimated energy and the actual energy; determine a system weight based on one or more conditions associated with charging of a battery in the vehicle; determine a compensation factor for the planned charge power value based on the system weight and the error; store, in the database, the compensation factor specific to the planned charge power value; select one of the stored compensation factors from the database based on a subsequent planned charge power value; determine an adjusted energy based on the estimated energy and the selected compensation factor; and determine an adjusted time duration for the subsequent planned charge power value based on the adjusted energy.
14 . The vehicle system of claim 13 , further comprising a vehicle charging control module positioned in the vehicle and in communication with the control module, the vehicle charging control module configured to: schedule a charging session for the battery in the vehicle based on the adjusted time duration; and control charging of the battery in response to the scheduled charging session.
15 . The vehicle system of claim 14 , wherein the vehicle charging control module is configured to schedule the charging session based on the adjusted time duration and one of a defined charge competition time for the battery or off-peak hours for a power system to charge the battery.
16 . The vehicle system of claim 13 , further comprising: a display module positioned in the vehicle and in communication with the control module, the display module configured to receive the adjusted time duration for charging the battery in the vehicle, and display the adjusted time duration and an input selectable by a user to indicate approval of the adjusted time duration; and a vehicle charging control module positioned in the vehicle and in communication with the control module, the vehicle charging control module configured to control charging of the battery in the vehicle in response to the user selecting the input indicating approval of the adjusted time duration.
17 . The vehicle system of claim 13 , wherein the control module is configured to determine the compensation factor based on a previous compensation factor specific to the planned charge power value.
18 . A charging control method for improving time duration estimates for charging a battery in a vehicle based on a charging schedule including charging timeslots, each charging timeslot having an estimated time duration and a corresponding planned charge power value, the charging control method comprising: determining a plurality of compensation factors for a plurality of planned charge power values, each compensation factor determined based on a system weight and an error between an estimated energy provided for a charging timeslot of the charging timeslots in the charging schedule and an actual energy provided during the charging timeslot for charging the battery in the vehicle; storing, in a database, each of the plurality of compensation factors specific to one of the planned charge power values; selecting one of the stored compensation factors from the database based on a subsequent planned charge power value for charging the battery in the vehicle; determining an adjusted time duration for charging the battery in the vehicle based on the selected compensation factor; and charging of the battery in the vehicle based on the adjusted time duration.
19 . The charging control method of claim 18 , wherein: the charging control method further includes displaying the adjusted time duration and an input selectable by a user to indicate approval of the adjusted time duration; and charging of the battery in the vehicle includes charging of the battery in response to the input indicating approval of the adjusted time duration.
20 . The charging control method of claim 18 , wherein: the charging control method further includes scheduling a charging session for the battery in the vehicle based on the adjusted time duration and one of a defined charge competition time for the battery or off-peak hours for a power system to charge the battery; and charging of the battery in the vehicle includes charging of the battery in the vehicle controlling charging of the battery in response to the charging session.

Description

INTRODUCTION The information provided in this section is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure. The present disclosure relates to vehicle systems and methods for compensating scheduled battery charging, and more particular to vehicle systems and methods for compensating scheduled battery charging based on timeslot energy. An electric vehicle (EV), such as a pure EV, a plug-in hybrid EV, etc. includes a battery system and one or more electric machines. The battery system is a rechargeable energy storage system including one or more high voltage battery packs each having a collection of battery cells. To charge the battery system, a charger plug is electrically coupled to a charging port of the EV via one or more connectors. In some instances, an estimated time duration for charging the battery system may be provided. For example, when a user plugs the charger plug into the charging port and charging begins, sensors may detect a current and a voltage provided to the EV. Based on the current and the voltage, power can be calculated. Then, a time duration may be estimated with the calculated power and a known energy needed to charge the battery system. In some scenarios, time duration estimates may be altered after completion of a charging session. SUMMARY A vehicle system for improving time duration estimates for charging a battery in a vehicle based on a charging schedule including charging timeslots is disclosed. Each charging timeslot has an estimated time duration and a corresponding planned charge power value. The vehicle system includes a database, and a control module in communication with the database. The control module is configured to determine a plurality of compensation factors for a plurality of planned charge power values, each compensation factor determined based on a system weight and an error between an estimated energy provided for a charging timeslot of the charging timeslots and an actual energy provided during the charging timeslot for charging the battery in the vehicle, store, in the database, each of the plurality of compensation factors specific to one of the planned charge power values, select one of the stored compensation factors from the database based on a subsequent planned charge power value for charging the battery in the vehicle, and determine an adjusted time duration for charging the battery in the vehicle based on the selected compensation factor. In other features, the vehicle system further includes a vehicle charging control module positioned in the vehicle and in communication with the control module. The vehicle charging control module is configured to schedule a charging session for the battery in the vehicle based on the adjusted time duration and control charging of the battery in response to the scheduled charging session. In other features, the vehicle charging control module is configured to schedule the charging session based on the adjusted time duration and a defined charge competition time for the battery. In other features, the vehicle charging control module is configured to schedule the charging session based on the adjusted time duration and off-peak hours for a power system to charge the battery. In other features, the vehicle system further includes a display module positioned in the vehicle and in communication with the control module. The display module is configured to receive the adjusted time duration for charging the battery in the vehicle and display the adjusted time duration. In other features, the vehicle system further includes a vehicle charging control module positioned in the vehicle. The display module is configured to display an input selectable by a user to indicate approval of the adjusted time duration. The vehicle charging control module is configured to control charging of the battery in the vehicle in response to the user selecting the input indicating approval of the adjusted time duration. In other features, the control module is configured to determine at least one of the compensation factors based on a previous compensation factor for the same planned charge power value. In other features, the control module is configured to determine an adjusted energy based on the estimated energy and the selected compensation factor and determine the adjusted time duration for charging the battery in the vehicle based on the adjusted energy. In other features, the control module is configured to determine the system weight based on one or more conditions associated with charging the battery in the vehicle. In other features, the one or more conditions includes at least one of a time duration factor, an energy factor, a battery temper