JP2013072804A - Electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the driver of a vehicle to know how far the vehicle can run.SOLUTION: An electric vehicle has a storage battery system; a generator system; an engine; a drive motor; a current location detector; route searching means that searches for a road-following travelable route that the electric vehicle can run; travelable time calculating means that calculates a travelable time according to power consumption per unit distance; travelable distance calculating means that calculates a travelable distance; travelable range setting means that sets a travelable range over which the electric vehicle can run; and destination candidate displaying means that displays on a display unit 43, as a destination candidate, a facility meeting the driver-designated purpose of travel within the travelable range.

Description

  The present invention relates to an electrically driven vehicle.

  2. Description of the Related Art Conventionally, an electrically driven vehicle such as an electric vehicle, for example, an electric vehicle includes a vehicle drive device, and the drive motor is driven by electric power supplied from a battery, and the torque of the drive motor, that is, the drive motor. It is made to drive | work by generating a torque and transmitting this drive motor torque to a drive wheel.

  However, in the battery, the energy density representing the capacity per unit weight cannot be sufficiently increased, and thus represents the distance that can be traveled when the electric vehicle is driven using the power supplied from the battery. It is not possible to increase the travelable distance, the travelable time representing the travelable time, and the like. In order to increase the travelable distance, the travelable time, etc., it is necessary to increase the capacity of the battery. In this case, the battery not only increases in size but also increases in weight. As a result, the electric vehicle becomes large and the weight of the electric vehicle increases.

  Therefore, in order to increase the travelable distance, travelable time, etc., a generator was installed in addition to the battery, and the generator was driven by the engine to generate current and supply it to the battery. Hybrid type vehicles are provided as electrically driven vehicles.

  In the hybrid type vehicle, the remaining amount of the battery representing the degree of charge (charged amount) of the battery, the remaining amount of fuel for driving the engine, that is, the remaining amount of fuel, and the past traveling state of the hybrid type vehicle. Based on this, the travelable distance is calculated and displayed on a screen formed on the display unit (see, for example, Patent Document 1).

JP 2001-231103 A

  However, in the conventional hybrid type vehicle, since it is necessary to adjust the output of the generator in accordance with the traveling load applied to the hybrid type vehicle, the control in the control unit becomes complicated and the power generation efficiency becomes low. End up.

  Therefore, a hybrid vehicle in which the generator is driven at a constant output with high power generation efficiency can be considered. In that case, the time required to drive the generator at a constant output, that is, the necessary power generation time is considered. Since it differs depending on the remaining battery level, the travelable distance cannot be accurately calculated based on the remaining battery level and the power generation energy generated by power generation.

  Therefore, since the driver cannot know how far the hybrid vehicle can travel, not only is it difficult to determine the destination, but the hybrid vehicle cannot travel safely to the destination. .

  The present invention solves the problems of the conventional hybrid type vehicle and not only knows how far the driver can drive the hybrid type vehicle, but also makes it easy to determine the destination. An object of the present invention is to provide an electrically driven vehicle that can travel to a destination with peace of mind.

  Therefore, in the electrically driven vehicle of the present invention, the power storage device, the power generation device, the engine that drives the power generation device, the power storage device and the power generation device are connected, and the electric power supplied from the power storage device and the power generation device is used. Based on the drive motor to be driven, the current position detection unit for detecting the current position, and the road information, the current position is set as the departure point, and a route that can drive the electrically driven vehicle is searched for as a travelable path. Calculate energy consumption per distance by calculating power consumption required when the route search processing means and the electrically driven vehicle travel along the travelable route, and calculating energy consumption per distance based on the power consumption and the average vehicle speed Based on the processing means and the energy consumption per distance, the electric drive vehicle can travel along the travelable route. Travelable time calculation processing means for calculating time, travelable distance calculation processing means for calculating a travelable distance based on the travelable time and average vehicle speed, and driving the electrically driven vehicle based on the travelable distance A travelable range setting processing means for setting a travelable range capable of being searched, a destination candidate search processing means for retrieving a facility suitable for a travel purpose designated by the driver within the travelable range as a destination candidate, and a search Destination candidate display processing means for displaying the destination candidate displayed on the display unit.

  According to the present invention, in the electrically driven vehicle, the power storage device, the power generation device, the engine that drives the power generation device, the power storage device and the power generation device are connected, and the electric power supplied from the power storage device and the power generation device is used. Based on the drive motor to be driven, the current position detection unit for detecting the current position, and the road information, the current position is set as the departure point, and a route that can drive the electrically driven vehicle is searched for as a travelable path. Calculate energy consumption per distance by calculating power consumption required when the route search processing means and the electrically driven vehicle travel along the travelable route, and calculating energy consumption per distance based on the power consumption and the average vehicle speed Based on the processing means and the energy consumption per distance, the electric drive vehicle can travel along the travelable route. A travelable time calculation processing means for calculating the travelable distance, a travelable distance calculation processing means for calculating a travelable distance based on the travelable time and the average vehicle speed, and driving the electrically driven vehicle based on the travelable distance. A travelable range setting processing means for setting a travelable range in which the vehicle can travel, a destination candidate search processing means for retrieving a facility suitable for the travel purpose designated by the driver within the travelable range as a destination candidate, Destination candidate display processing means for displaying the destination candidates on the display unit.

  In this case, a travelable range is set based on the travelable distance, a facility suitable for the travel purpose specified by the driver within the travelable range is searched as a destination candidate, and the destination candidate is displayed on the display unit. Therefore, not only can the driver know how far the electric drive vehicle can be driven, it is easy to determine the destination, but the electric drive vehicle can be driven to the destination with peace of mind. it can.

It is a figure which shows the vehicle drive device in embodiment of this invention. It is a conceptual diagram of the hybrid type vehicle in embodiment of this invention. It is a 1st main flowchart which shows operation | movement of the control part in embodiment of this invention. It is a 2nd main flowchart which shows the operation | movement of the control part in embodiment of this invention. It is a figure which shows the subroutine of the energy consumption calculation process per distance in embodiment of this invention. It is a figure which shows the subroutine of the HV driving | running | working possible time calculation process in embodiment of this invention. It is a figure which shows the subroutine of EV driving | running | working possible time calculation processing in embodiment of this invention. It is a figure which shows the subroutine of the destination candidate search process in embodiment of this invention. It is a figure which shows the example of the list | wrist of the facility recorded on the driving | running | working purpose recording part in embodiment of this invention. It is a figure which shows the example of the search path | route in embodiment of this invention. It is a 1st figure which shows the example of the driving | running | working possible range displayed on the display part in embodiment of this invention. It is a 2nd figure which shows the example of the driving | running | working possible range displayed on the display part in embodiment of this invention. It is a 3rd figure which shows the example of the driving | running | working possible range displayed on the display part in embodiment of this invention. It is a 1st figure which shows the example of the destination candidate displayed on the display part in embodiment of this invention. It is a 2nd figure which shows the example of the destination candidate displayed on the display part in embodiment of this invention. It is a 3rd figure which shows the example of the destination candidate displayed on the display part in embodiment of this invention. It is a 4th figure which shows the example of the destination candidate displayed on the display part in embodiment of this invention. It is a 5th figure which shows the example of the destination candidate displayed on the display part in embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a hybrid vehicle as an electrically driven vehicle will be described.

  FIG. 2 is a conceptual diagram of a hybrid vehicle according to the embodiment of the present invention.

  In the figure, WL and WR are wheels functioning as drive wheels, and 11 is a drive motor (M) as a drive source connected to the wheels WL and WR and as a first electric machine. By transmitting the drive motor torque generated by driving the drive motor 11 to the wheels WL and WR, the hybrid vehicle can be run.

  When the hybrid vehicle is a front wheel drive system, the wheels WL and WR are front wheels, the rear wheels are driven wheels, and when the hybrid vehicle is a rear wheel drive system, the wheels WL and WR are rear wheels. The front wheel becomes the driven wheel. When the hybrid type vehicle is a four-wheel drive system, the drive motor 11 is connected to the front wheels and the rear wheels. In the present embodiment, the drive motor 11 is connected to the wheels WL and WR, and the wheels WL and WR are rotated by driving the drive motor 11, but each wheel of the front and rear wheels is rotated. The drive motors can be integrated with each other and the respective drive motors can be driven independently to rotate the wheels.

  Further, 13 is connected to the drive motor 11, an inverter as a drive circuit for driving or regenerating the drive motor 11, 14 as a first power source and a battery as a power storage device, 15 A generator (G) as a second electric machine and as a second electric machine and as a power generator. The drive motor 11 is driven by the electric power supplied from the battery 14 and the generator 15.

  Reference numeral 16 denotes a plug as a connecting element connected to the battery 14, 17 denotes an inverter connected to the generator 15 to drive the generator 15, and 18 drives the generator 15. Reference numeral 19 denotes an engine (E / G) as a driving source for supplying the fuel, and 19 denotes a fuel tank as a fuel supply source for supplying gasoline as fuel (driving medium) to the engine 18.

  Each of the inverters 13 and 17 includes a DC / DC converter (not shown) as a voltage converter and a plurality of transistors (not shown) as, for example, six switching elements. The DC / DC converter changes the voltage between the drive motor 11 and the generator 15 and the battery 14. Each of the transistors is paired as a unit to form a transistor module (IGBT) of each phase, and is turned on / off by a drive signal sent from a control unit (not shown), and is supplied from the battery 14 in the inverter 13. The direct current is converted into a three-phase alternating current and supplied to the drive motor 11 to drive the drive motor 11 or the three-phase alternating current generated with the regeneration of the drive motor 11 is converted into a direct current. And is supplied to the battery 14 to charge the battery 14, or the inverter 17 converts the three-phase alternating current generated with the power generation of the generator 15 into a direct current, 14 to charge the battery 14. The battery 14 can be charged by inserting the plug 16 into an outlet of a household commercial power source or an outlet of a charging device of a charging stand (charging facility).

  In the present embodiment, the DC / DC converter is built in the inverter 13, but can be arranged independently of the inverter 13.

  In the present embodiment, a lithium ion battery is used as the battery 14. In the present embodiment, battery 14 is used as the power storage device, but a capacitor can be used instead of battery 14.

  In the present embodiment, it is possible to drive the hybrid vehicle to the destination by supplying current to the drive motor 11, and the driving performance of the hybrid vehicle on flat roads, uphill roads, etc., and The battery 14 retains sufficient electric power so that the acceleration performance of the hybrid vehicle during acceleration can be sufficiently increased, the energy density of the battery 14 is 0.1 [kWh / kg] or more, and the output density is 1 [kW / kg] or more.

  Further, the weight of the battery 14 is set within an allowable range of the battery 14 based on the maximum output and the performance of the battery 14 that are required to ensure the power performance of the hybrid vehicle. The maximum output is calculated based on the vehicle weight and the running resistance (air resistance, rolling resistance, climbing resistance, acceleration resistance, etc.) applied to the hybrid type vehicle as the vehicle travels.

  For example, in the case of a hybrid vehicle having a vehicle weight of about 1000 [kg], the maximum output of the hybrid vehicle is 40 to 60 [kW], and the weight of the battery 14 is 40 to 60 [kg]. In the conventional electric vehicle, when the travelable distance is 300 to 500 [km], the energy consumed per distance when the electric vehicle is traveled is about 0.1 [kWh / km]. The weight is 300 to 500 [kg]. On the other hand, in the present embodiment, the battery 14 is charged by the generator 15 to supplement the energy required for traveling, so the weight of the battery 14 is reduced to 1/8 to 1 of that of a conventional electric vehicle. / 5.

  In the present embodiment, an internal combustion engine using gasoline as fuel is used as the engine 18, but an internal combustion engine using hydrogen or the like as fuel instead of gasoline can be used. In the present embodiment, an internal combustion engine is used to drive the generator 15, but the reciprocating piston type uses carbon dioxide gas, methane gas, or the like supplied from a high-pressure fuel tank as fuel. A carbon dioxide gas engine, a methane gas engine, or the like can be used as an expansion engine and a vaporization engine.

  Furthermore, a fuel cell is used as a power generator, and a polymer electrolyte fuel cell (PEFC), a phosphoric acid fuel cell (PAFC), a solid oxide fuel cell (SOFC), a hydrazine fuel cell, a direct fuel cell A methanol fuel cell (DMFC) or the like can be used.

  By the way, the remaining battery charge SOC [%] as the remaining battery charge is used to indicate the degree of charge (charged charge) of the battery 14. When the battery 14 is further discharged, the remaining battery capacity SOC [%] is set to X0 [%] where the remaining minimum capacity at which the battery 14 is rapidly deteriorated due to overdischarge is further charged. Then, the remaining maximum capacity at which the battery 14 is rapidly deteriorated due to overcharge is set to Xmax [%]. The remaining minimum capacity X0 [%] and the remaining maximum capacity Xmax [%] of the battery 14 are determined by the specifications of the battery 14.

  In this case, for example, when power generation by the generator 15 is started as the remaining battery SOC [%] reaches the remaining minimum capacity X0 [%], the output of the generator 15 is used as a traveling load applied to the hybrid vehicle. Since it is necessary to adjust correspondingly, not only the control in the control unit becomes complicated, but also the generator 15 becomes larger and the power generation efficiency is lowered.

  Therefore, in the present embodiment, the energy consumed as the hybrid vehicle travels, that is, the consumed energy and the remaining battery SOC SOC so that the generator 15 can be driven with high power generation efficiency. %], The power generation by the generator 15 is performed.

  In this case, in order to drive the generator 15 in a state where the power generation efficiency is high, the generator 15 is set to a constant output Pg [N] so as to maintain the maximum value of the power generation efficiency or a value in the vicinity thereof, It is driven by the engine 18. Even when a carbon dioxide gas engine, a methane gas engine, or the like is used as the engine, in order to drive the generator in a state where the power generation efficiency is high, the generator has a constant value so as to maintain the maximum value or a value in the vicinity thereof. Output is set and driven by the engine.

  When a fuel cell is used as a power generation device, the fuel cell is driven in a normal driving state on the characteristic curve representing the relationship between current and voltage, that is, the current vs. voltage characteristic curve, and the current falls below a predetermined value. Or the voltage is set to a predetermined value or more. For example, at the unit electrode of the fuel cell, the current is set to 0.2 [A] or less, or the voltage is set to 0.8 [V] or more.

  And in this Embodiment, the time which drives the said generator 15 in a state with high electric power generation efficiency is made into electric power generation time.

  Next, a vehicle drive device for generating power by the generator 15 in the hybrid vehicle will be described.

  FIG. 1 is a diagram showing a vehicle drive device according to an embodiment of the present invention.

  In the figure, 21 is a control unit as a first control unit that controls the entire hybrid vehicle, and 27 is a navigation device.

  The control unit 21 includes a CPU 31 as an arithmetic device, a RAM 32 used as a working memory when the CPU 31 performs various arithmetic processes, a ROM 33 in which various data are recorded, in addition to a control program.

  The navigation device 27 includes a navigation control unit 34 as a second control unit that performs overall control of the navigation device 27, and the navigation control unit 34 is a CPU as an arithmetic device, like the control unit 21. RAM, ROM, etc.

  In addition to the GPS sensor 35 serving as a current position detecting unit for detecting the current position of the hybrid type vehicle, the direction of the hybrid type vehicle, the time, etc., the time detecting unit, and map data, A data recording unit 36 as an information recording unit in which the above information is recorded, a communication unit 38 as a transmission / reception unit functioning as a communication terminal, and the like are connected.

  The map data includes intersection data relating to intersections (including branch points), road information (road data) indicating road conditions relating to roads connecting the intersections and road links constituting the roads, and facility data relating to various facilities. , Search data or the like processed to search for a route is included.

  The communication unit 38 receives various information such as traffic information and general information sent from a road traffic information center (not shown) such as a VICS (registered trademark) center as a first information provider. The traffic information includes traffic jam information, regulation information, parking information, traffic accident information, service area congestion status information, etc., and general information includes news, ambient environment information (for example, ambient environment status (for example, In addition to weather forecasts, actual weather conditions such as temperature, humidity, weather, etc.) are included. The communication unit 38 can also receive various information such as traffic information and general information from the information center as the second information provider. The navigation device 27, the road traffic information center, the information center, etc. constitute a navigation system.

  In addition to the inverters 13 and 17, the control unit 21 performs various displays on a screen (not shown), and a display unit as a first output unit for notifying the driver who is an operator. 43, a voice input unit 44a for the driver to make a predetermined input by voice, a voice output unit 44b as a second output unit for notifying the driver by outputting voice, and the driver An operation unit 45 for performing predetermined input by operation, a vehicle speed sensor 51 as a vehicle speed detection unit for detecting a vehicle speed v [km / h] of a hybrid type vehicle, a voltage of the battery 14, that is, a battery voltage Vb [V ] As a voltage detection unit for detecting the current detected by the battery voltage sensor 52, the battery 14, or supplied from the battery 14, that is, the battery current Ib [A The battery current sensor 53 as a current detection unit for detecting the battery temperature, the temperature of the battery 14, that is, the battery temperature sensor 54 as a temperature detection unit for detecting the battery temperature tb [° C.], and the gasoline supplied from the fuel tank 19 to the engine 18 The remaining amount of fuel, that is, the remaining fuel amount sensor 55 as a remaining fuel amount detecting unit for detecting the remaining fuel amount F [L] is connected. The fuel type can also be detected by the fuel remaining amount sensor 55. In addition, when the screen is formed by a touch panel, the display unit 43 also functions as an operation unit for performing a predetermined input when operated by a driver.

  A computer is configured by the control unit 21, the navigation control unit 34, the CPU 31, and the like, and a storage device or a recording medium is configured by the data recording unit 36, the RAM 32, the ROM 33, and the like. Further, an MPU or the like can be used instead of the CPU 31 as the arithmetic unit.

  Next, the basic operation of the navigation device 27 will be described.

  First, when the navigation device 27 is activated by the operation of the operation unit 45 by the driver, the navigation information acquisition processing means of the CPU (hereinafter referred to as “navigation CPU”) of the navigation control unit 34 performs the navigation information acquisition processing. The map data is acquired (read) from the data recording unit 36 or acquired (received) from an information center or the like via the communication unit 38.

  Next, the matching processing means of the navigation CPU performs matching processing, reads the current position and direction from the GPS sensor 35, reads road data from the map data, and based on the current position, direction and road data, the current position is The current position is specified by determining on which road link. The display processing means of the navigation CPU performs display processing, forms a map screen on the display unit 43, and displays a current position, a map around the current position, and an orientation on the map screen.

  When the driver operates the operation unit 45 to input a predetermined point as a destination, the destination setting processing means of the navigation CPU performs destination setting processing and sets the destination.

  Then, when the driver operates the operation unit 45 to input a condition for searching for a route, that is, a search condition, the route search processing means of the navigation CPU performs a route search process, and the current position, purpose In addition to reading the location, search conditions, etc., the search data of the map data is read, and based on the current position, the destination, and the search data, the route from the starting point represented by the current position to the destination is determined based on the search conditions. The searched route is searched, that is, route data representing the searched route is output. A route having the smallest total link cost assigned to each road link is set as a searched route.

  Subsequently, the guidance processing means of the navigation CPU performs guidance processing, reads the route data, displays the search route on the map screen according to the route data, and outputs the search route by voice as necessary. Provide route guidance.

  Next, the operation of the control unit 21 will be described.

  FIG. 3 is a first main flowchart showing the operation of the control unit in the embodiment of the present invention, FIG. 4 is a second main flowchart showing the operation of the control unit in the embodiment of the present invention, and FIG. The figure which shows the subroutine of the energy consumption calculation process per distance in embodiment, FIG. 6 is the figure which shows the subroutine of the HV driving | running | working possible time calculation process in embodiment of this invention, FIG. 7 is EV driving in embodiment of this invention The figure which shows the subroutine of possible time calculation processing, FIG. 8 is the figure which shows the subroutine of the destination candidate search process in embodiment of this invention, FIG. 9 is the facility recorded on the driving | running | working purpose recording part in embodiment of this invention FIG. 10 is a diagram showing an example of a search route in the embodiment of the present invention, and FIG. 11 is displayed on the display unit in the embodiment of the present invention. FIG. 12 is a second diagram showing an example of the travelable range displayed on the display unit in the embodiment of the present invention, and FIG. 13 is an embodiment of the present invention. FIG. 14 is a first diagram showing an example of destination candidates displayed on the display unit according to the embodiment of the present invention, and FIG. FIG. 16 shows a second example of destination candidates displayed on the display unit in the embodiment of the present invention, and FIG. 16 shows a third example of destination candidates displayed on the display unit in the embodiment of the present invention. FIG. 17 is a fourth diagram showing examples of destination candidates displayed on the display unit in the embodiment of the present invention, and FIG. 18 is a destination candidate displayed on the display unit in the embodiment of the present invention. It is a 5th figure which shows the example of.

  First, an input request processing unit (not shown) of the CPU 31 performs an input request process, forms an input request screen on the display unit 43, and designates a travel purpose to be described later of the hybrid vehicle, that is, inputs an input request screen on the input request screen. Display a prompt message. When the driver operates the operation unit 45 and inputs the travel purpose of the hybrid type vehicle, the information acquisition processing unit (not shown) of the CPU 31 performs the information acquisition process and acquires (reads) the input travel purpose. (Step S1). The purpose of travel is meal (Western food, Japanese food, buffet, etc.), shopping (food, clothes, home appliances, books, etc.), photography, vacation (amusement park, park, etc.), etc.

  Next, the information acquisition processing means acquires the current position as navigation information from the navigation device 27 (step S2). The current position at the time when the input request process is performed is home.

  Subsequently, a travelable route acquisition processing unit (not shown) of the CPU 31 performs a travelable route acquisition process and allows the navigation device 27 to travel from the current position, that is, travel from the current position. An instruction is sent to search for a route, and a travelable route is acquired from the navigation device 27 (step S3).

  In the navigation device 27, when the route search processing means receives an instruction from the CPU 31, based on the road information of the map data, within the predetermined range around the current position, the current position is set as the departure point, and the hybrid type vehicle is selected. A route without a destination that can be traveled is searched as the travelable route and transmitted to the control unit 21.

  In FIG. 10, pr is the current position, k is the travel locus, Rtj (j = 1, 2,..., N) is connected to the current position pr and searched for in the route search process, and d1 is the travelable route. A branch point where the travelable route Rt4 branches from Rt3, and d2 is a branch point where the travelable route Rt6 branches from the travelable route Rt5. In this case, the route search processing means, when viewed from the travel locus, travelable routes Rt1 to Rt4 existing ahead of the current position pr, travelable routes Rt5, Rt6, travelable route Rt3 existing behind the current position pr, The travelable routes Rt4, Rt6, etc. that branch from Rt5 are searched. In the present embodiment, the route search processing means searches for roads of a predetermined road type, for example, main roads such as national roads, prefectural roads, etc. at the start of traveling, and roads of other road types. For example, narrow streets such as city streets are not searched. The route search processing means also searches for narrow streets such as city streets as the hybrid vehicle approaches the end point of the travelable route Rtj.

  In the present embodiment, the travelable routes Rt5 and Rt6 existing behind the current position pr are searched, but only the travelable routes Rt1 to Rt4 existing ahead of the current position pr are searched. can do.

  Subsequently, the energy consumption calculation processing unit (not shown) of the CPU 31 performs energy consumption calculation processing per distance, and based on the navigation information acquired from the navigation device 27, the energy consumption Euj ( j = 1, 2,..., n) [kWh / km] is calculated (step S4).

  For this purpose, the information acquisition processing means of the energy consumption calculation processing means performs information acquisition processing, road information (gradient, road surface information, etc.) recorded in the data recording unit 36 from the navigation device 27, and the communication unit 38. The traffic information (congestion information, vehicle flow, vehicle speed, etc.) and the surrounding environment information (temperature, weather, etc.) acquired by the above are acquired (step S4-1). In addition, when the predetermined travelable route of the travelable route Rtj is a road with high usage frequency, road information, traffic information, and the like can be recorded in the RAM 32.

  Next, the average vehicle speed calculation processing means of the energy consumption calculation processing means performs an average vehicle speed calculation process, and the hybrid type vehicle is driven along the travelable route Rtj based on traffic information, traffic flow, vehicle speed, etc. in the traffic information. An average vehicle speed avj (j = 1, 2,..., N) [km / h] when traveling is calculated (step S4-2).

Subsequently, the running resistance consumption power calculation processing means of the energy consumption calculation processing means performs a running resistance consumption power calculation process, calculates a running resistance R [N] based on the navigation information, and can drive the hybrid type vehicle. Travel resistance consumption power Pdj (j = 1, 2,..., N) [kW] consumed by the travel resistance R [N] when traveling along the route Rtj
Pdj = R · avj
Is calculated (step S4-3).

The travel resistance R [N] is defined as Ra [N], air resistance when the hybrid vehicle travels along the travelable route Rtj, Rr [N] as rolling resistance, and Rs [N]. And when the acceleration resistance is Rg [N],
R = Ra + Rr + Rs + Rg
And calculated based on the navigation information.

  In addition, the auxiliary machine power consumption calculation processing means of the energy consumption calculation processing means performs the auxiliary machine power consumption calculation process, and travels the hybrid type vehicle along the travelable route Rtj based on the ambient temperature information such as temperature and weather. The auxiliary power consumption power Phj (j = 1, 2,..., N) [kW] consumed by the auxiliary machine is calculated, and the regenerative consumption power calculation processing means of the energy consumption calculation processing means per distance is Power calculation processing is performed, and the vehicle is regenerated by the drive motor 11 along with braking when the hybrid vehicle is driven along the travelable route Rtj based on the road information, the traffic information, the traffic information, the vehicle flow, the vehicle speed, and the like. Power, that is, regenerative power Pkj (j = 1, 2,..., N) [kW] is calculated (step S4-4).

Subsequently, the power consumption calculation processing means of the energy consumption calculation processing means per distance performs the power consumption calculation process, and the power consumption Pwj (j = 1, j) required when the hybrid vehicle travels along the travelable route Rtj. 2, ..., n) [kW]
Pwj = Pdj + Phj−Pkj
= R · avj + Phj−Pkj
Is calculated.

Subsequently, the energy consumption determination processing means per distance of the energy consumption calculation processing means performs the energy consumption determination processing per distance to obtain the power consumption Pwj [kWh] and the average vehicle speed avj [km / h], and the distance Energy consumption per hit Euj [kWh / km]
Euj = Pwj / avj
Is determined (step S4-5).

  Subsequently, the HV travelable time calculation processing means as the first travelable time calculation processing means (not shown) of the CPU 31 performs the HV travelable time calculation process as the first travelable time calculation process, and the generator 15 HV travelable time Tj (j = 1, 2 as the first travelable time), that is, the travelable time when the hybrid type vehicle travels in the HV travel mode along the travelable route Rtj while generating electricity by ,..., N) [h] is calculated (step S5).

  For this purpose, the information acquisition processing means of the HV travelable time calculation processing means performs information acquisition processing to acquire the average vehicle speed avj [km / h] and the energy consumption Euj [kWh / km] per distance (step S5- 1) The remaining battery level SOC [%] and the remaining fuel level F [L] detected by the remaining fuel level sensor 55 are acquired (step S5-2).

  The remaining battery charge SOC [%] is detected by the battery voltage Vb [V] detected by the battery voltage sensor 52, the battery current Ib [A] detected by the battery current sensor 53, and the battery temperature sensor 54. It is calculated in advance based on the battery temperature tb [° C.]. In this case, the remaining battery level SOC [%] is a first limiting factor that limits the HV travelable time Tj [h], and the remaining fuel level F [L] limits the HV travelable time Tj [h]. This is the second limiting factor.

Subsequently, the power generation energy calculation processing means of the HV travelable time calculation processing means performs power generation energy calculation processing to obtain the output Pg [N] and the average vehicle speed avj [km / h] of the power generator 15, and the power generator Based on the output Pg [N] of 15 and the average vehicle speed avj [km / h], the generated energy per distance Guj (j = 1, 2,..., N) [kWh / km]
Guj = Pg / avj
Is calculated (step S5-3).

Next, the power generation possible time calculation processing means of the HV travelable time calculation processing means performs a power generation possible time calculation process, and calculates a calorific value (thermal energy) per unit amount of gasoline when the engine 18 is driven as Hf [kWh. / L], and when the heat generation efficiency of the generator 15 is η, the generator 15 is driven at a constant output Pg [N], and the hybrid vehicle is driven along the travelable route Rtj to generate power. The first power generation possible time Tfj (j = 1, 2,..., N) limited by the remaining fuel amount F [L] until the remaining fuel amount F [L] becomes 0 (zero). [H]
Tfj = F · Hf · η / Pg
Is calculated (step S5-4).

Subsequently, the power generation possible time calculation processing means drives the generator 15 with a constant output Pg [N], and causes the hybrid vehicle to travel along the travelable route Rtj at the average vehicle speed avj [km / h]. Second power generation possible time Tbj (j = 1, 2,..., N), which is limited by the remaining battery SOC [%] until the remaining energy B [kWh] becomes 0 when power generation is performed. h]
Tbj = (B / (Euj-Guj)) / avj
Is calculated (step S5-5).

The remaining energy B [kWh] represents the energy remaining in the battery 14, and the remaining battery SOC [%], the total battery capacity Qb determined by the specifications of the battery 14, the remaining minimum capacity X0 [%], the remaining maximum Based on the capacity Xmax [%] and the correction coefficient γ accompanying the deterioration of the battery 14,
B = γ · ((SOC−X0) / (Xmax−X0)) · Qb
It is represented by

  Then, the HV travelable time determination processing means of the HV travelable time calculation processing means performs HV travelable time determination processing, and the shorter of the first and second power generation possible times Tfj, Tbj [h] The power generation possible time is determined as the HV travelable time Tj [h] (step S5-6).

  Subsequently, the EV travelable time calculation processing means as the second travelable time calculation processing means (not shown) of the CPU 31 performs the EV travelable time calculation process as the second travelable time calculation process, and the generator 15 The time when the hybrid type vehicle is allowed to travel in the EV travel mode along the travelable route Rtj without generating the electric power by EV, that is, the EV travel possible time Tej (j = 1 as the second travelable time) 2, ..., n) [h] is calculated (step S6).

For this purpose, the information acquisition processing means of the EV travelable time calculation processing means performs information acquisition processing to acquire the average vehicle speed avj [km / h] and the energy consumption Euj [kWh / km] per distance (step S6- 1) The EV travel time determination processing means of the EV travelable time calculation processing means performs EV travel time determination processing, acquires the remaining battery charge SOC [%], and EV travelable time Tej [h]
Tej = (SOC / (Euj) / avj
Is determined (step S6-2).

Next, the HV travelable distance calculation processing means as the first travelable distance calculation processing means (not shown) of the CPU 31 performs the HV travelable distance calculation process as the first travelable distance calculation process, and the HV travelable time. Tj [h] is obtained, and the hybrid vehicle can travel in the HV travel mode along the travelable route Rtj in the HV travelable time Tj [h], that is, the first travelable distance. HV travelable distance Lj (j = 1, 2,..., N) [km] as a distance
Lj = Tej · avj
Is calculated (step S7).

Further, the EV travelable distance calculation processing means as the second travelable distance calculation processing means (not shown) of the CPU 31 performs the EV travelable distance calculation process as the second travelable distance calculation process, and the EV travelable time Tej [H] is obtained, and the hybrid type vehicle is allowed to travel along the travelable route Rtj in the EV travelable time Tej [h] EV travel mode, that is, the second travelable distance. EV travelable distance Lej (j = 1, 2,..., N) [km]
Lej = Tej · avj
Is calculated (step S8).

  Subsequently, the arrival location designation determination processing means (not shown) of the CPU 31 performs an arrival location designation determination process to determine whether or not there is a designation of a location where the hybrid vehicle arrives after finishing traveling along the travelable route Rtj. Judgment is made (step S9). That is, the arrival place designation determination processing means further includes a designated place, for example, after the hybrid type vehicle has traveled HV travelable time Tj [h] or after traveled EV travelable time Tej [h]. Judge whether it is necessary to drive the hybrid vehicle to nearby accommodation facilities, charging stations, etc.

  For this purpose, the arrival location designation determination processing means notifies the driver of designation of the location to arrive at the driver on the display unit 43.

  When the arrival location is designated, the travelable distance correction processing means of the CPU 31 performs the travelable distance correction processing and can travel in HV so that it can arrive at the designated arrival location, that is, the designated location. The distance Lj [km] and the EV travelable distance Lej [km] are corrected (step S10). For example, when it is necessary to drive the hybrid vehicle from the current position pr to the specified location after traveling the HV travelable distance Lj [km] or EV travelable distance Lej [km], the current position on the travelable route Rtj If a point that is separated from pr by HV travelable distance Lj [km] or EV travelable distance Lej [km] is defined as a travelable point, the hybrid vehicle needs to travel further from the travelable point to a designated place.

  Therefore, the travelable distance correction processing means multiplies the HV travelable distance Lj [km] and the EV travelable distance Lej [km] by a predetermined correction coefficient corresponding to the position of the designated place, The HV travelable distance Lj [km] and EV travelable distance Lej [km] are corrected by adding the distance.

  In addition, when there is no designation of a place to arrive, the travelable distance correction processing means corrects the HV travelable distance Lj [km] and the EV travelable distance Lej [km] so that it can return to the home. (Step S11).

  In this case, the travelable distance correction processing means multiplies the HV travelable distance Lj [km] and the EV travelable distance Lej [km] by a predetermined correction coefficient corresponding to the position of the home, The HV travelable distance Lj [km] and EV travelable distance Lej [km] are corrected by adding the distance.

  When the HV travelable distance Lj [km] and the EV travelable distance Lej [km] are corrected in this way, the travelable range setting processing means (not shown) of the CPU 31 performs the travelable range setting process, An HV travelable range and an EV travelable range are set around the position pr based on the HV travelable distance Lj [km] and the EV travelable distance Lej [km] after correction (step S12).

  For this purpose, the travelable range setting processing means, as shown in FIG. 11, is a point ptj (j = 1, 2,...) That is HV travelable distance Lj [km] away from the current position pr on each travelable route Rtj. ..., n) are connected with a line having a predetermined shape, in the present embodiment, a straight line, and a range surrounded by the straight line is set as an HV travelable range Ar1 as a first travelable range.

  Further, the travelable range setting processing means, as shown in FIG. 12, is a point ptj (j = 1, 2,...) Away from the current position pr on the travelable route Rtj by the EV travelable distance Lej [km]. , N) are connected with a line having a predetermined shape, in this embodiment, a straight line, and a range surrounded by the straight line is set as an EV travelable range Are1 as a second travelable range.

  Further, the travelable range setting processing means sets the HV travelable range Ar1 and the EV travelable range Are1 in an overlapping manner as shown in FIG.

  Subsequently, a destination candidate search instruction processing unit (not shown) of the CPU 31 performs a destination candidate search instruction process, acquires the travel purpose input by the driver, sends an instruction to the navigation device 27, and matches the travel purpose. Is searched as a destination candidate (step S13).

  Upon receiving an instruction from the CPU 31, in the navigation device 27, the destination candidate search processing means of the navigation CPU performs a destination candidate search process, and based on the facility data recorded in the data recording unit 36, the HV travelable range Among facilities in areas within Ar1 and EV travelable range Are1, and within a predetermined range outside HV travelable range Ar1 (for example, set by connecting points separated by a predetermined distance from point ptj) The facility suitable for the driving purpose of the driver is searched as a destination candidate, and the searched destination candidate is sent to the control unit 21.

  For example, when the travel purpose is a meal, a restaurant, a hotel, etc., when the travel purpose is shopping, a supermarket, department store, an electronic store, a bookstore, etc., when the travel purpose is photography, a shooting point, etc. When the traveling purpose is a vacation, amusement parks, parks, etc. are considered as destination candidates.

  Subsequently, the destination candidate display processing unit (not shown) of the CPU 31 performs destination candidate display processing (step S14).

  For this purpose, the initial display processing means of the destination candidate display processing means performs initial display processing, forms a destination candidate display screen as shown in FIG. 14 on the display unit 43, and displays the destination candidate display screen. The HV travelable range Ar1 and EV travelable range Are1 and the searched destination candidates sk (k = 1, 2,...) Are initially displayed (step S14-1).

  By the way, in this Embodiment, the display form of the destination candidate sk, for example, a display object, a display method, etc. can be changed according to a driver | operator's intention to drive a hybrid type vehicle.

  The driver's intention is, for example, that the hybrid vehicle wants to travel in the HV traveling mode while generating power by the generator 15 in the HV traveling range Ar1, and that the generator 15 generates power in the EV traveling range Are1. Want to run a hybrid type vehicle in EV mode without running, Want to run a hybrid type vehicle outside the HV driving range Ar1, Want to go to a frequently used facility (Frequently used), To the facility closest to home I want to go to a well-known facility, I want to go to a facility where there is no traffic congestion until I reach it, I want to go to a nearby facility after driving, I want to go to a facility with a parking lot, a facility with good service There is an intention such as wanting to go to a facility where coupons can be used.

  Therefore, the intention acquisition processing means of the destination candidate display processing means performs intention acquisition processing, and a message prompting the driver to input the driver's intention for using the facility on the display unit 43 is assumed. The enumerated list or the like is displayed, and the driver's intention is acquired (step S14-2).

  Subsequently, the display form change processing means of the destination candidate display processing means performs display form change processing, and the display unit 43, as shown in FIG. 15, according to the driver's intention in using the facility. By changing the display method of the destination candidates sk, or by narrowing down the destination candidates sk to be displayed, the display mode of the destination candidates sk is changed, and the destination candidates sk are changed in the changed display mode. It is displayed (step S14-3).

  For example, when the driver's intention is to go to a facility with a high usage frequency, each destination candidate sk is classified according to the usage frequency, and is displayed with a different display method for each classified destination candidate. The In FIG. 15, each destination candidate sk is displayed with different marks of ○, Δ, and □ depending on the usage frequency. In addition, about the mark of each destination candidate sk, a color can be varied depending on the usage frequency, and a blinking speed can be varied depending on the usage frequency. Furthermore, only the destination candidates that match the driver's intention among the destination candidates sk, for example, only the frequently used facilities can be displayed.

  In the case of a facility closest to the home, a nearby facility after driving, a facility with a parking lot, a facility that can use a coupon, etc., the display form change processing means refers to the navigation information, In the case of a facility that does not have traffic congestion until it arrives, refer to the traffic information, and in the case of a well-known facility or a good service facility, refer to the list of facilities shown in FIG. Determine if it fits the driver's intention.

  Therefore, the list of facilities shown in FIG. 9 includes, for each used facility, the genre indicating the purpose of traveling, the name of the facility, the pinpoint information of the facility, the service, the frequency of use, the distance from the home, from the home to the facility. Information such as traffic jams on the road, parking lots of facilities, and neighboring facilities adjacent to the facility are recorded. In addition, recording of information on the list requires the driver to determine whether or not to record, and when the driver determines that the information may be recorded, or when the same facility is used multiple times Can be done automatically.

  Subsequently, the remaining amount replenishment information guidance processing unit as the first information guidance processing unit (not shown) of the CPU 31 performs the remaining amount replenishment information guidance processing as the first information guidance processing, and refers to the data recording unit 36. A charging stand as a first remaining amount replenishment facility capable of charging the battery 14 and fuel, in the present embodiment, as a second remaining amount replenishment facility capable of replenishing gasoline, and In the present embodiment, a fuel charging station as a fuel supply facility, which is a gasoline station, is searched for and displayed on a destination candidate display screen as shown in FIGS. FIG. 16 displays the charging station m2 and the gas stations m1 and m3 together with the HV traveling range Ar1 and FIG. 17 together with the EV traveling range Are1.

  When the driver's intention is to drive the hybrid type vehicle outside the HV travelable range Ar1, as shown in FIG. 18, on the destination candidate display screen formed on the display unit 43, the HV A facility outside the travelable range Ar1 can be displayed as the destination candidate sk. In this case, the destination candidate display processing means displays the charging station m2 and the gas stations m1 and m3 on the destination candidate display screen and informs the driver that the battery 14 needs to be charged or the gasoline needs to be replenished. Displays a message for

  Subsequently, pinpoint information guidance processing means as second information guidance processing means (not shown) of the CPU 31 performs pinpoint information guidance processing as second information guidance processing so that the driver can display the destination candidate display screen on the destination candidate display screen. When an operation such as touching each destination candidate sk is performed, the facility information in the data recording unit 36 is referred to, and pinpoint information of the destination candidate sk is guided (step S16). In addition, the facility information of each facility when the hybrid type vehicle is driven can be recorded as history information in the data recording unit 36. In this case, the pinpoint information guidance processing means stores the history information of the data recording unit 36. To guide the pinpoint information of the destination candidate sk.

  In addition, as the driver touches the destination candidate sk on the destination candidate display screen, the hybrid vehicle having the WEB environment can directly access the homepage of the facility and has an SNS environment. In the hybrid type vehicle, the word of mouth of the facility can be acquired.

  Next, a destination selection determination processing unit (not shown) of the CPU 31 performs a destination selection determination process to determine whether or not a predetermined destination candidate among the destination candidates sk has been selected by the driver (step S17). The route guidance request determination processing means (not shown) of the CPU 31 performs route guidance request determination processing to determine whether route guidance is requested by the driver (step S18). When the driver operates the operation unit 45 to select a predetermined destination candidate from the destination candidates sk and requests a route search, a search route acquisition processing unit (not shown) of the CPU 31 performs a search route acquisition process. The navigation device 27 is instructed to search for a route from the departure point to the destination by using the current position pr as the departure point and the selected destination candidate as the destination, and obtains the searched route from the navigation device 27. (Step S19).

  In the navigation device 27, when the route search processing unit receives an instruction from the CPU 31, the route search processing unit searches for a route from the departure point to the destination based on the road information of the map data, and transmits the searched route to the control unit 21. .

  Subsequently, route guidance processing means (not shown) of the CPU 31 performs route guidance processing, and when a search route is transmitted from the navigation device 27, a guidance screen is formed on the display unit 43, and a map and a search route are displayed on the guidance screen. Is displayed to provide route guidance (step S20).

  Thus, in the present embodiment, the HV travelable range Ar1 and the EV travelable range Are1 are set based on the HV travelable distance Lj [km] and the EV travelable distance Lej [km], and the travelable range A facility suitable for the travel purpose designated by the driver in Ar1 and Are1 is searched as a destination candidate sk, and the destination candidate sk is displayed on the display unit 43, so that the driver can drive the hybrid vehicle to how far. This makes it possible not only to easily determine the destination, but also to drive the hybrid vehicle with peace of mind to the destination.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

11 Drive motor 14 Battery 15 Generator 18 Engine 31 CPU
35 GPS sensor 43 Display unit Ar1 HV travelable range Are1 EV travelable range avj Average vehicle speed Euj Energy consumption F per distance Fuel remaining amount Guj Power generation energy Lj HV travelable distance Lej EV travelable distance Rtj Travelable path sk Destination Candidate SOC Battery level Tj HV travelable time Tej EV travelable time

Claims (10)

A power storage device;
A power generator,
An engine that drives the power generation device;
A drive motor connected to the power storage device and the power generation device and driven by electric power supplied from the power storage device and the power generation device;
A current position detection unit for detecting the current position;
A route search processing means for searching, as a travelable route, a route that can drive an electrically driven vehicle, based on road information, with a current position as a departure point;
Energy consumption calculation processing means for calculating energy consumption per distance based on the consumption power and the average vehicle speed, and calculating energy consumption per distance based on driving the electrically driven vehicle along the travelable route;
Based on the energy consumed per distance, travelable time calculation processing means for calculating a travelable time during which the electrically driven vehicle can travel along the travelable route;
A travelable distance calculation processing means for calculating a travelable distance based on the travelable time and the average vehicle speed;
Based on the travelable distance, travelable range setting processing means for setting a travelable range in which the electrically driven vehicle can travel,
Destination candidate search processing means for searching for a facility that matches the travel purpose designated by the driver within the travelable range as a destination candidate;
An electrically driven vehicle comprising: destination candidate display processing means for displaying the searched destination candidates on a display unit.   The electrically driven vehicle according to claim 1, wherein the destination candidate display processing means displays the travelable range and destination candidates on a display unit. While having intention acquisition processing means for acquiring the intention of the driver who runs the electrically driven vehicle,
The electrically driven vehicle according to claim 1, wherein the destination candidate display processing means displays a facility that matches the driver's intention on the display unit as a destination candidate.   The electrically driven vehicle according to any one of claims 1 to 3, wherein the destination candidate display processing means displays a charging facility together with a destination candidate on a display unit.   The electrically driven vehicle according to any one of claims 1 to 4, wherein the destination candidate display processing means displays a fuel supply facility together with a destination candidate on a display unit.   2. The route search processing unit searches for a route using a current position as a departure point and a selected destination candidate as a destination when a predetermined destination candidate among the destination candidates is selected. The electric drive vehicle of any one of -5. While having power generation energy calculation processing means for calculating power generation energy per distance based on the output of the power generation device and the average vehicle speed,
The travelable time calculation processing means calculates the travelable time based on energy consumed per distance, power generation energy per distance, the remaining amount of battery of the power storage device, and the remaining amount of fuel supplied to the engine. The electrically driven vehicle according to any one of the above.   The travelable time is shorter of the first power generation possible time limited by the remaining amount of fuel supplied to the engine and the second power generation possible time limited by the remaining battery amount of the power storage device. It is time, The electrically driven vehicle of any one of Claims 1-7.   The electrically driven vehicle according to claim 8, wherein the first power generation possible time is a time limited by a remaining amount of fuel supplied to the engine when the power generation device is driven at a constant output.   The electrically driven vehicle according to any one of claims 1 to 6, wherein the travelable time calculation processing means calculates the travelable time based on energy consumed per distance, a remaining battery level of the power storage device, and an average vehicle speed.

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