# US 9,751,425 B2 · Navigation device and cruising range display system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,425 B2 - Document ID: US9751425B2 - Status: Granted - Kind: B2 - Application number: 14/008,224 - Filed: 2012-03-29 - Published: 2014-01-30 - Granted: 2017-09-05 - Earliest claimed: 2011-03-29 - Assignees: Clarion Co., Ltd. - Applicants: Yasuo Egoshi - Inventors: Yasuo Egoshi - Web page: https://patentgrep.com/patent/US9751425B2 ## CPC - B60L 58/13: Maintaining the SoC within a determined range - B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor - B60K 35/22: Display screens - B60K 35/81: for controlling displays - B60K 35/85: Arrangements for transferring vehicle- or driver-related data - B60L 15/2045: {for optimising the use of energy} - B60L 58/16: responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH] - G01C 21/3469: {Fuel consumption; Energy use; Emission aspects} - G09B 29/106: {using electronic means} - B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver - B60K 2360/16: Type of output information - B60K 2360/169: Remaining operating distance or charge - B60L 2240/622: by satellite navigation - B60L 2250/16: by display - B60W 2510/248: Age of storage means - Y02T 10/64: Electric machine technologies in electromobility - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/72: Electric energy management in electromobility - Y02T 90/16: Information or communication technologies improving the operation of electric vehicles - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) - G09B: EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times A61B5/16; games, sports, amusements A63; projectors, projector screens G03B) - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A navigation device includes: a degradation coefficient determination unit that determines a degradation coefficient representing a degradation level of a battery that supplies a vehicle with electric power; a current location calculation unit that calculates a current location of the vehicle; a vicinity map display unit that displays a vicinity map of the current location of the vehicle on a display screen; a cruising range calculation unit that calculates a first cruising range of the vehicle based on a remaining amount of the battery and a full charge amount of the battery contained in charging information received from the battery; a second cruising range calculation unit that calculates a second cruising range, which is smaller than the first cruising range, based on the degradation coefficient and the first cruising range; and a cruising range display unit that performs a display representing the second cruising range on the vicinity map. ## Claims ### Claim 1 A navigation device, comprising: a storage unit that stores a lookup table which includes degradation coefficients each representing credibility of a full charging amount that decreases due to degradation of a battery that supplies a vehicle with electric power for driving; a degradation coefficient determination unit that determines a degradation coefficient among the degradation coefficients by using the lookup table stored in the storage unit; a current location calculation unit that calculates a current location of the vehicle; a vicinity map display unit that displays a vicinity map showing a vicinity of the current location of the vehicle on a display screen; a cruising range calculation unit that calculates a first cruising range of the vehicle based on a remaining amount of the battery and a full charge amount of the battery, which is a charging amount when the battery is in full charge, contained in charging information received from a battery unit that includes the battery; a second cruising range calculation unit that calculates a second cruising range, which is smaller than the first cruising range, based on the degradation coefficient and the first cruising range; and a cruising range display unit that performs a predetermined display representing the second cruising range on the vicinity map, wherein the cruising range display unit displays the first cruising range and the second cruising range along a road that extends from the current location of the vehicle on the vicinity map, the battery is included by a battery unit; the battery unit calculates the full charge amount and records the calculated full charge amount together with date and time of recording thereof, and the battery unit transmits the calculated full charge amount and the date and time of recording recorded therein to the navigation device; the navigation device further includes a charging information reception unit that receives the full charge amount and the date and time of recording from the battery unit; the degradation coefficients included in the lookup table are determined according to elapsed time from the date and time of recording; and the degradation coefficient determination unit determines the degradation coefficient by using the lookup table based on the date and time of recording and present date and time. ### Claim 2 (depends on 1) The navigation device according to claim 1, wherein: the cruising range display unit displays a first road having a first range of distance along the road from the current location of the vehicle that is shorter than the second cruising range, with a first display form, on the vicinity map; and the cruising range display unit displays a second road having a second range of distance along the road from the current location of the vehicle that is longer than the second cruising range and is shorter than the first cruising range, with a second display form which is different from the first display form, on the vicinity map. ### Claim 3 (depends on 1) The navigation device according to claim 1, further comprising: a degradation coefficient correction unit that corrects the degradation coefficient based on the full charge amount contained in the charging information that was received by the charging information reception unit in the past and on the full charge amount contained in the charging information that is currently received by the charging information reception unit. ### Claim 4 A cruising range display system, comprising: a battery unit including a battery that supplies a vehicle with electric power for driving; and a navigation device that is to be connected to the vehicle, wherein: the battery unit or the navigation device includes a storage unit that stores a lookup table which includes degradation coefficients each representing credibility of a full charging amount that decreases due to degradation of the battery; a degradation coefficient determination unit that determines a degradation coefficient among the degradation coefficients by using the lookup table stored in the storage unit; the battery unit includes a remaining amount calculation unit that calculates a remaining amount of the battery, a full charge amount calculation unit that calculates a full charge amount of the battery, an amount recording unit that records the full charge amount of the battery calculated by the full charge amount calculation unit, and a charging information transmission unit that transmits the remaining amount of the battery calculated by the remaining amount calculation unit and the full charge amount recorded by the amount recording unit as charging information to the navigation device; and the navigation device includes a current location calculation unit that calculates a current location of the vehicle, a vicinity map display unit that displays a vicinity map showing a vicinity of the current location of the vehicle on a display screen, a charging information reception unit that receives the charging information transmitted by the charging information transmission unit, a cruising range calculation unit that calculates a first cruising range of the vehicle based on the remaining amount and the full charge amount contained in the charging information received by the charging information reception unit, a second cruising range calculation unit that calculates a second cruising range, which is smaller than the first cruising range, based on the degradation coefficient and the first cruising range, and a cruising range display unit that displays a predetermined display representing the second cruising range on the vicinity map, wherein the cruising range display unit displays the first cruising range and the second cruising range along a road that extends from the current location of the vehicle on the vicinity map, the amount recording unit records the full charge amount calculated by the full charge amount calculation unit together with date and time of recording thereof; the charging information transmission unit transmits charging information containing the date and time of recording to the navigation device; the degradation coefficients included in the lookup table are determined according to elapsed time from the date and time of recording; and the degradation coefficient determination unit is included by the navigation device and determines the degradation coefficient by using the lookup table based on the date and time of recording and present date and time. ### Claim 5 (depends on 4) The cruising range display system according to claim 4, wherein the cruising range display unit displays a first road having a first range of distance along the road from the current location of the vehicle that is shorter than the second cruising range, with a first display form, on the vicinity map; and the cruising range display unit displays a second road having a second range of distance along the road from the current location of the vehicle that is longer than the second cruising range and is shorter than the first cruising range, with a second display form which is different from the first display form, on the vicinity map. ### Claim 6 (depends on 4) The cruising range display system according to claim 4, further comprising: a degradation coefficient correction unit that corrects the degradation coefficient based on the full charge amount contained in the charging information that was received by the charging information reception unit in the past and on the full charge amount contained in the charging information that is currently received by the charging information reception unit.