CN-121989698-A - Notification system for electric vehicle

CN121989698ACN 121989698 ACN121989698 ACN 121989698ACN-121989698-A

Abstract

In a notification system of an electric vehicle that runs based on electric power obtained from a secondary battery, a charging facility determination unit determines whether or not a charging facility enters a predetermined determination range defined with reference to a current position of the electric vehicle during running of the electric vehicle. The notification control unit estimates a battery undercharge possibility of the electric vehicle, which indicates a possibility of occurrence of undercharge of the secondary battery of the electric vehicle. The notification control unit performs notification based on a battery undercharge possibility of the electric vehicle in response to a determination that the charging facility enters the predetermined determination range.

Inventors

Kawai kazumoto
MITSUHARU HIGASHITANI
IKEMOTO NOBUAKI

Assignees

株式会社电装

Dates

Publication Date: 20260508
Application Date: 20251031
Priority Date: 20241106

Claims (16)

1. A notification system for an electric vehicle (30) that runs based on electric power acquired from a secondary battery (34), comprising: A charging facility determination unit configured to determine whether or not a charging facility falls within a predetermined determination range defined with reference to a current position of the electric vehicle during traveling of the electric vehicle, and A notification control unit configured to: estimating a battery under-charge probability of the electric vehicle, the battery under-charge probability representing a probability of occurrence of a secondary battery of the electric vehicle, and In response to a determination that the charging facility enters the predetermined determination range, notification is performed based on the battery undercharge possibility of the electric vehicle.
2. The notification system of claim 1, wherein, The notification control unit is configured to estimate the battery under-charge likelihood based on, Starting point position information indicating a position of a starting point of a planned travel path of the electric vehicle, vehicle information indicating a condition of the electric vehicle, and Location information about the charging facility.
3. The notification system of claim 1, further comprising: a reselection unit, wherein, The charging facility is pre-selected as a planned charging facility, The reselection unit is configured to: determining whether the planned charging facility has been ignored such that the electric vehicle has passed through the planned charging facility, and In response to a determination that the planned charging facility has been ignored such that the electric vehicle has passed the planned charging facility, a charging facility candidate is reselected from one or more charging facility candidates as a new planned charging facility.
4. The notification system of claim 3, wherein the notification system, The reselection unit is configured to reselect a charging facility candidate from the one or more charging facility candidates as a new planned charging facility based on at least one of: the electric vehicle reaching a running energy efficiency of the electric vehicle required for each of the charging facility candidates from a current position of the electric vehicle; A travel time required for the electric vehicle to reach each of the charging facility candidates from a current position; charging facility information indicating a condition of each of the charging facility candidates; Vehicle information indicating a condition of the electric vehicle, or Preference information about an occupant of the electric vehicle.
5. The notification system of claim 3, wherein the notification system, The reselection unit is included in any one of the following: Cloud server capable of communicating with the electric vehicle, and An external terminal capable of communicating with the electric vehicle.
6. The notification system according to claim 1 or 2, wherein, The notification control unit is configured to perform notification based on a battery-under-charge possibility of the electric vehicle using a first notification method or a second notification method different from the first notification method, The notification control unit is configured to select one of the first notification method and the second notification method to perform notification based on a level of the battery undercharge possibility of the electric vehicle.
7. The notification system of claim 6, wherein, The reselection unit is configured to: a determination is made as to whether the state of charge of the secondary battery is greater than or equal to a predetermined threshold, In response to a determination that the state of charge of the secondary battery is greater than or equal to the predetermined threshold, using the first notification method, performing notification based on the battery under-charge likelihood of the electric vehicle, In response to a determination that the state of charge of the secondary battery is less than the predetermined threshold, notification is performed based on the battery undercharge possibility of the electric vehicle using the second notification method.
8. The notification system of claim 6, further comprising: A battery-under-charge-possibility estimating unit configured to estimate whether the electric vehicle can reach the charging facility without the battery of the electric vehicle being under-charged, The notification unit is configured to perform notification based on the battery under-charge possibility of the electric vehicle using a third notification method different from the first notification method and the second notification method.
9. The notification system of claim 8, wherein, The first notification method, the second notification method, and the third notification method defined as mutually different from each other are defined as at least one of: (i) The types of stimuli used by the respective first, second, and third notification methods are different from each other; (ii) The repetition frequencies of the stimuli used by the respective first, second and third notification methods are different from each other; (iii) If each of the first to third notification methods uses sound as a stimulus, the amounts of sound used by the respective first, second, and third notification methods are different from each other; (iv) If each of the first to third notification methods uses vibration as its stimulus, the amounts of vibration used by the respective first, second, and third notification methods are different from each other; (v) If each of the first to third notification methods uses vibration as its stimulus, vibration amplitudes used by the respective first, second and third notification methods are different from each other, and (Vi) If each of the first to third notification methods uses a visual indication as its stimulus, display sizes of information used by the respective first, second, and third notification methods are different from each other.
10. The notification system according to claim 1 or 2, wherein, The notification unit is configured to provide a notification to an occupant (80) of the electric vehicle based on the likelihood of the battery of the electric vehicle being undercharged using at least one of sound, vibration, visual indication, and smell as a stimulus.
11. The notification system according to claim 1 or 2, wherein, Information indicating a notification performed by the notification unit based on the battery undercharge possibility of the electric vehicle is configured to be transmitted to at least one of: a cloud server capable of communicating with the electric vehicle; an external terminal capable of communicating with the electric vehicle.
12. The notification system of claim 1 or 2, further comprising: A storage unit (16) configured to store, in a predetermined storage area (16 a), first information indicating the content of the notification performed by the notification unit and second information indicating the fact that the notification has been performed.
13. The notification system according to claim 1 or 2, wherein, The charging facility determination unit is configured to: The predetermined decision range is determined according to at least one of: (i) Current position information about a current position of the electric vehicle; (ii) Facility location information regarding a location of the charging facility; (iii) Vehicle information indicating a condition of the electric vehicle; (iv) Environmental information around the electric vehicle or the charging facility, or (V) Time information indicating a time associated with travel of the electric vehicle, The charging facility determination unit is configured to determine whether the charging facility falls within a determined determination range during traveling of the electric vehicle.
14. The notification system of claim 13, wherein the notification system, The charging facility determination unit is configured as Receiving current location information from at least one of (i) a global positioning system, (ii) a navigation device of the electric vehicle, and (iii) one or more sensors of the electric vehicle, The charging facility determination unit is configured to receive the facility position information from the navigation device of the electric vehicle, The vehicle information includes at least one of (i) speed information indicating a speed of the electric vehicle and (ii) battery information indicating a state of the secondary battery, The environmental information includes at least one of (i) traffic congestion information around the electric vehicle or the charging facility and (ii) signal information related to at least one traffic signal around the electric vehicle or the charging facility, The time information includes at least one of (i) a current time, (ii) a first predicted arrival time at which the electric vehicle is predicted to arrive at the charging facility at a time at which a predetermined planned travel path is set, and (iii) a second predicted arrival time at which the electric vehicle is predicted to arrive at the charging facility at the current time.
15. A program product for an electric vehicle that runs based on electric power obtained from a secondary battery, The program product stores computer program instructions that, The computer program instructions cause a processor to: determining whether a charging facility enters a determination range defined with reference to a current position of the electric vehicle during traveling of the electric vehicle; estimating a battery under-charge probability of the electric vehicle, the battery under-charge probability representing a probability of occurrence of a secondary battery of the electric vehicle, and In response to a determination that the charging facility enters a predetermined determination range, notification is performed based on the battery undercharge possibility of the electric vehicle.
16. A notification method for an electric vehicle that runs based on electric power obtained from a secondary battery, the notification method comprising: determining whether a charging facility enters a determination range defined with reference to a current position of the electric vehicle during traveling of the electric vehicle; estimating a battery under-charge probability of the electric vehicle, the battery under-charge probability representing a probability of occurrence of a secondary battery of the electric vehicle, and In response to a determination that the charging facility enters a predetermined determination range, notification is performed based on the battery undercharge possibility of the electric vehicle.

Description

Notification system for electric vehicle Cross Reference to Related Applications The present application is based on and claims priority from japanese patent application No. 2024-194467 filed on 6/11/2024, the disclosure of which is incorporated herein by reference. Technical Field The present disclosure relates to a notification system for an electric vehicle. Background Japanese patent application laid-open No. 2016-118403 discloses a battery depletion warning system for an electric vehicle. The battery exhaustion warning system obtains an amount of electric energy consumption required for the electric vehicle to travel from a current location to a destination. The system then compares the ratio of the required energy and the remaining battery capacity to a plurality of thresholds to assess the likelihood of battery depletion at a plurality of step-wise levels. The system performs warning by a mode corresponding to the evaluation level. The term "battery run out or battery undercharge" of the electric vehicle as used herein refers to a state in which the secondary battery mounted to the electric vehicle is capable of providing insufficient electric power. Disclosure of Invention For long distance travel of electric vehicles, it is necessary to use a charging facility in order to avoid battery undercharge. However, the system disclosed in the above patent document does not consider the location of the charging facility. This may cause the electric vehicle to ignore the charging facility during traveling, passing through the charging facility. The inventors have found the above-mentioned problems after they have considered in detail. In view of the above, the present disclosure aims to provide a notification system capable of appropriately notifying information related to a battery under-charge when an electric vehicle approaches a charging facility, thereby preventing the electric vehicle from inadvertently passing through the charging facility. An exemplary aspect of the present disclosure provides a notification system for an electric vehicle that travels based on electric power obtained from a secondary battery. The system includes a charging facility determination unit configured to determine whether or not the charging facility falls within a predetermined determination range defined with reference to a current position of the electric vehicle during traveling of the electric vehicle. The system further includes a notification control unit configured to estimate a battery undercharge possibility of the electric vehicle, the battery undercharge possibility representing a possibility of an electric quantity of a secondary battery of the electric vehicle, and to perform notification based on the battery undercharge possibility of the electric vehicle in response to a determination that the charging facility falls within a predetermined determination range. Such a configuration of the notification system according to the above-described exemplary aspect enables an occupant to recognize not only the fact that the electric vehicle is approaching the charging facility but also the battery under-charging possibility of the electric vehicle through the notification performed based on the battery under-charging possibility of the electric vehicle when the electric vehicle approaches the charging facility. Therefore, according to the notification system of the above-described exemplary aspect, it is possible to appropriately provide a notification aimed at preventing the battery from being insufficiently charged when the electric vehicle approaches the charging facility, thereby preventing the electric vehicle from passing through the charging facility due to the driver's negligence. Throughout this disclosure, where bracketed reference numerals are used for respective elements, the numerals are provided only as examples of correspondence of the elements with specific structures in embodiments described later. Accordingly, the present disclosure is not limited by the use of such reference numerals. Drawings Other aspects of the disclosure will become apparent from the following description of the embodiments with reference to the accompanying drawings, in which: Fig. 1 is a side view schematically showing a vehicle to which a notification system of a first embodiment of the present disclosure is applied. Fig. 2 is a block diagram schematically illustrating typical components installed in the vehicle shown in fig. 1 and typical components of a cloud communicatively connected to the vehicle. Fig. 3 is a flowchart schematically showing a control routine for making a travel plan of a vehicle including a planned travel path of the vehicle according to the first embodiment. Fig. 4 is a schematic diagram showing a planned travel path, a road, a charging facility that the vehicle can charge, and a current position of the vehicle in two dimensions. Fig. 5 is a flowchart schematically showing a notification control routin