Energy Estimation Device, Information System for Automotive, and Server Device

• US 20150151638A1
• Filed: 06/07/2013
• Published: 06/04/2015
• Est. Priority Date: 06/07/2012
• Status: Active Grant

• Current Assignee: Clarion Co., Ltd. (Faurecia SA)
• Original Assignee: Clarion Co., Ltd. (Faurecia SA), Nissan Motor Co., Ltd.
• Inventors: Tagawa, Shinya, Mutou, Keisuke, Sugimoto, Mika, Endo, Masaki
• Granted Patent: US 9,346,362 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 17/356 having fluid or electric motor, for driving one or more wheels disposition of motor in, or adjacent to, traction wheel B60K7/00
• CPC Class Codes: B60K 6/00 Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units arrangement or mounting in vehicles of electrical gearing, in which an electrical machine serves only as reduction gearing and not as the prime mover and in which no electrical storing means are used B60K17/12; control and regulation of purely electrical prime movers B60L; prime-movers comprising electrical and internal combustion motors in a common engine block or housing per se F02B65/00; electric motors or motor-generators used for starting the combustion engine F02N11/04; electric motors for synchronising gearing F16H3/12 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/44 Series-parallel type
• CPC Class Codes: B60K 6/52 Driving a plurality of drive axles, e.g. four-wheel drive
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/622 by satellite navigation
• CPC Class Codes: B60L 2240/642 Slope of road
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/44 by parameter estimation
• CPC Class Codes: B60L 2260/52 drive range estimation, e.g. of estimation of available travel distance
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 7/14 for vehicles propelled by ac motors
• CPC Class Codes: B60L 7/18 Controlling the braking effect B60L7/12, B60L7/14, B60L7/16 take precedence
• CPC Class Codes: B60L 7/24 with additional mechanical or electromagnetic braking
• CPC Class Codes: G01C 21/3469 Fuel consumption; Energy use; Emission aspects
• CPC Class Codes: G09B 29/007 : using computer methods
• CPC Class Codes: G09B 29/10 : Map spot or coordinate position indicators; Map reading aids optical projection apparatus per se G03B
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y10S 903/93 : Conjoint control of different elements

Abstract

An energy estimation device includes: an energy change quantity estimation unit that estimates an energy change quantity of a vehicle for each of links; an axle torque calculation unit that calculates, based upon the estimated energy change quantity, an axle torque of the vehicle for a regeneration link in which energy is regenerated upon traveling of the vehicle; an allocation ratio calculation unit that calculates, based upon the calculated axle torque, an allocation ratio of a regeneration brake relative to a friction brake of the vehicle for the regeneration link; and a regeneration energy estimation unit that estimates regeneration energy of the vehicle for the regeneration link based upon the energy change quantity and the allocation ratio.

Claims

1. An energy estimation device comprising:

an energy change quantity estimation unit that estimates an energy change quantity of a vehicle for each of links set in correspondence to predetermined road segments;

an axle torque calculation unit that calculates, based upon the energy change quantity estimated by the energy change quantity estimation unit, an axle torque of the vehicle for a regeneration link in which energy is regenerated upon traveling of the vehicle among the links;

an allocation ratio calculation unit that calculates, based upon the axle torque calculated by the axle torque calculation unit, an allocation ratio of a regeneration brake relative to a friction brake of the vehicle for the regeneration link; and

a regeneration energy estimation unit that estimates regeneration energy of the vehicle for the regeneration link based upon the energy change quantity and the allocation ratio calculated by the allocation ratio calculation unit.

2. An energy estimation device according to claim 1, further comprising:

a traveling speed estimation unit that estimates a traveling speed of the vehicle for the regeneration link, wherein

the allocation ratio calculation unit calculates the allocation ratio based upon the axle torque and the traveling speed estimated by the traveling speed estimation unit.

3. An information system for automotive, comprising a plurality of on-vehicle devices each installed in a vehicle and a server device connected with the on-vehicle devices via a communication network, wherein:

each of the on-vehicle devices includes;

an acceleration/deceleration change detection unit that detects a change in acceleration/deceleration of a vehicle in which the on-vehicle device is installed; and

a transmission unit that transmits acceleration/deceleration information pertaining to the change in the acceleration/deceleration detected by the acceleration/deceleration change detection unit to the server device, and

the server device includes;

a reception unit that receives the acceleration/deceleration information transmitted from the plurality of on-vehicle devices;

a segment specification unit that specifies, based upon the acceleration/deceleration information received by the reception unit, a loss segment in which energy is lost when each of the vehicles travels and a regeneration segment in which energy is regenerated when each of the vehicles travels;

an axle torque calculation unit that calculates an axle torque of each of the vehicles for the regeneration segment;

an allocation ratio calculation unit that calculates, based upon the axle torque calculated by the axle torque calculation unit, an allocation ratio of a regeneration brake relative to a friction brake of each of the vehicles for the regeneration segment;

a statistical parameter calculation unit that calculates, as statistical parameters for estimating consumption energy or regeneration energy for each of the links set in correspondence to predetermined road segments, a statistical loss parameter corresponding to the loss segment and a statistical regeneration parameter corresponding to the regeneration segment that contains a statistical value of the allocation ratio; and

an energy estimation unit that estimates, based upon the statistical parameters for each of the links calculated by the statistical parameter calculation unit, consumption energy or regeneration energy of an estimation target vehicle for a road to be traveled.

4. An information system for automotive according to claim 3, wherein:

the server device further includes a traveling speed calculation unit that calculates, based upon the acceleration/deceleration information, a traveling speed of each of the vehicles for the regeneration segments, and

the allocation ratio calculation unit calculates the allocation ratio based upon the axle torque and the traveling speed calculated by the traveling speed calculation unit.

5. A server device comprising:

a reception unit that receives acceleration/deceleration information pertaining to a change in acceleration/deceleration of each vehicle transmitted from a plurality of vehicles;

a segment specification unit that specifies, based upon the acceleration/deceleration information received by the reception unit, a loss segment in which energy is lost when each of the vehicles travels and a regeneration segment in which energy is regenerated when each of the individual vehicles travels;

an axle torque calculation unit that calculates an axle torque of each of the vehicles for the regeneration segment;

an allocation ratio calculation unit that calculates, based upon the axle torque calculated by the axle torque calculation unit, an allocation ratio of a regeneration brake relative to a friction brake of each of the vehicles for the regeneration segment;

a statistical parameter calculation unit that calculates, as statistical parameters for estimating consumption energy or regeneration energy for each of the links set in correspondence to predetermined road segments, a statistical loss parameter corresponding to the loss segment and a statistical regeneration parameter corresponding to the regeneration segment that contains a statistical value of the allocation ratio; and

an energy estimation unit that estimates, based upon the statistical parameters for each of the links calculated by the statistical parameter calculation unit, consumption energy or regeneration energy of an estimation target vehicle for a road to be traveled.

6. A server device according to claim 5, further comprising:

a traveling speed calculation unit that calculates, based upon the acceleration/deceleration information, a traveling speed of each of the vehicles for the regeneration segments, wherein

the allocation ratio calculation unit calculates the allocation ration based upon the axle torque and the traveling speed calculated by the traveling speed calculation unit.