JP3018958B2 - Travel display device for hybrid electric vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor (hereinafter, referred to as a motor) as a vehicle driving source, and a battery device (hereinafter, referred to as a battery) for supplying electric power for driving the motor. More specifically, the present invention relates to a hybrid electric vehicle (HEV) equipped with a generator as a power supply in an emergency, and more specifically, a driving display for notifying a driver of a driving state, which is conventionally generally referred to as a speedometer. Related to the device.

[0002]

2. Description of the Related Art In a traveling display device of a hybrid electric vehicle, in addition to general equipment such as a speedometer for displaying a traveling speed and an odometer for integrating and displaying a traveling distance, a state in which an onboard generator is operated, That is, a generator operation indicator lamp is provided for notifying the driver of a "power depletion state" in which the motor cannot be driven by the battery itself. The generator operation indicator lamp has a meaning that, when lit, prompts the driver to charge the battery from an external power source (for example, a household outlet).

[0003]

The development concept of an electric vehicle (EV) or a hybrid electric vehicle (HEV) is to suppress the deterioration of the environment due to the exhaust gas of a conventional internal combustion engine driven type vehicle, and ultimately. Is to clean the global environment. Even hybrid electric vehicles are equipped with a generator that emits exhaust gas,
The basic philosophy is to keep the environment clean, and the use of generators is regarded as an emergency only. Therefore, increasing the usage rate of the generator will reduce the development philosophy of the hybrid electric vehicle, and nothing but loses the significance of the “hybrid electric vehicle”. From this point of view, turning on the generator operation indicator lamp to notify the necessity of charging is meaningful in urging the driver to use the vehicle as an electric vehicle. There is a risk that the use of emergency response generators will become habitual and the usage rate of electric vehicles will drop significantly.

An object of the present invention is to provide a travel display device in a hybrid electric vehicle that can greatly contribute to improving the driver's awareness of use as an electric vehicle.

[0005]

SUMMARY OF THE INVENTION According to the present invention, positioning a generator as an emergency and permitting its use forever results in a habit of using the generator.
It is based on the idea that it is necessary to impose a compulsory restriction on driving and display it in order to change the awareness of the driving car, because it will make the development significance of the hybrid electric vehicle lose. Specifically, according to the first aspect of the present invention, a hybrid electric vehicle including a vehicle-mounted generator that drives an electric motor with electric power of a battery mounted on the vehicle and runs the electric motor and supplies electric power to the battery and the electric motor. In the travel display device, limp control means for preventing the generator from operating when the integrated travel distance of the vehicle reaches a predetermined value after the battery is charged by further using the generator from a full charge of the battery, and A limp display means for displaying the operation of the limp control means, and the limp control means for displaying the distance that the vehicle can travel without supplying new energy from the outside and when the battery is fully charged from the outside And a limp distance meter that is reset to

According to a second aspect of the present invention, in the configuration of the first aspect, the limp distance meter is also used as an odometer and is set so that either one can be displayed by a switching button. I am taking it. According to a third aspect of the present invention, in the configuration of the first or second aspect, when the battery is charged from an external power source, the battery is turned on when charging is stopped before the battery is fully charged, and the battery is connected to the external power source. When the vehicle is to be started without canceling, an external charge lamp that blinks is provided.

[0007]

An embodiment of the present invention will be described below with reference to FIG. The traveling display device 1 includes a display unit 2 and a limp control unit 3. The display unit 2 includes a first panel unit 4 and a second panel partitioned by a central portion of the first panel unit 4. 6. The limp control means 3 is, for example, a microcomputer, and is programmed to forcibly suppress the operation of the electric motor as the vehicle drive source when the traveling distance of the vehicle reaches a predetermined value after the on-board battery is fully charged. The limp control means 3 is connected to a limp home lamp 34 described later and a limp distance meter 40. In the second panel section 6, a third panel section 8 simulating the side shape of the hybrid electric vehicle is formed, and the third panel section 8 includes a motor operation lamp simulating the actual mounting position. 10, a plurality of battery lamps 12,..., And a generator operation indicator lamp 14. The generator operation indicator lamp 14 is abbreviated as (AUXILIARY POWER UNIT) and is indicated by the letters "APU" in the meaning of an auxiliary power supply source consisting of a generator and an internal combustion engine that drives the generator.

The battery lamp 12 is a motor operation lamp 1
It is arranged in series between 0 and the generator operation indicator lamp 14, and the amount of light of the battery can be grasped at a glance by the number of lights. An arrow-shaped power generation lamp 16 is provided between the right end battery lamp 12 and the generator operation display lamp 14. When the internal combustion engine of the generator is suddenly operated in the cold state, the cleanliness of the exhaust gas is low because the catalyst and the circuit are not warmed, but in order to avoid this, the generator is driven after the warm-up operation state The power generation lamp 16 is turned on when the internal combustion engine is operating and generating power. An arrow-shaped motor powering lamp 18 pointing to the motor side and an arrow-shaped motor regeneration lamp 20 pointing to the battery side are provided between the left end battery lamp 12 and the motor operation lamp 10. When power is supplied to the motor from the battery device, the motor powering lamp 18 is turned on. In this type of electric vehicle, it is common to apply regenerative braking using a motor as a generator at the time of braking in order to extend the traveling distance even a little,
During this regeneration operation, the motor regeneration lamp 20 is turned on.

A speedometer 22 for displaying the running speed is provided above the third panel section 8, and a fuel indicator 24 for displaying the fuel of the internal combustion engine is provided above the generator operation indicator lamp 14. I have. An external charge lamp 26 described below is provided between the speedometer 22 and the battery lamp 12.
A left turn display lamp 28, a right turn display lamp 30, and a headlight display lamp 32 are provided at an upper portion of the first panel section 4, and a limp home lamp 34 as a limp display means is provided at the upper center. On the right side of the first panel section 4, the position indicator lamp group 3 of the shift lever is provided.
6 is provided, and a trip meter 38 and a limp distance meter 40 also serving as an odometer are provided. The limp distance meter 40 displays the distance that the vehicle can travel without new external energy supplied to the vehicle by the limp control means 3, and is reset when the battery is fully charged from the outside. The trip meter 38 is reset by a reset button 42 provided beside the trip meter 38, and the limp distance meter 40 can be arbitrarily switched to an odometer by a switching button 44. Below the limp distance meter 40, a door opening warning lamp 46, a seat belt warning lamp 48, and a brake lamp 50 are provided, respectively. Symbol 52
Indicates a display lamp group of other accessory equipment such as an airbag.

As described above, in the vehicle body layout of the hybrid electric vehicle, the display lamp is arranged in a shape corresponding to the actual mounting position and in a shape capable of imagining each power plant such as a motor, and further, the display lamp for displaying the power flow. Is provided, the driver can easily know the operating state of the power plant and the flow of power (control state) visually. For this reason, even if the internal combustion engine of the generator is automatically started and stopped, the driver does not feel uncomfortable, and operability and usability can be improved.

In this embodiment, the predetermined value of the traveling distance at which the limp control means 3 operates is set to 500 km.
The predetermined value is not a distance that can be run only by the amount of power of the battery from a state in which the battery is fully charged, but, for example, as shown in FIG. The value is set as an integrated value after the vehicle has been driven while being charged. That is, it is based on the idea that the use of the generator is allowed once or twice, but no more. When the limp control means 3 operates, the limp home lamp 34 lights up,
The operation of the electric motor is forcibly limited, that is, the speed is limited, and the vehicle runs sloppyly. In this case, the generator is controlled so as not to operate even if fuel remains in the internal combustion engine of the generator and power can be generated. Therefore, the driver must use the limp distance meter 40 to check the remaining mileage that can be run without charging with the external power supply, take appropriate vehicle movement measures, and then charge with the external power supply. When the battery is fully charged by the external power supply, the limp meter 40 is reset by the limp control means 3. Also, as shown in FIG. 3, when external charging is performed before the accumulated traveling distance reaches a predetermined value (for example, 500 km), the limp meter 40
The lump control means 3 may reset the integrated traveling distance displayed by the control method.

The predetermined value (500 km as an example) at which the limp control operates is rationally set from the viewpoint of practicality and correct usage of the hybrid electric vehicle. By operating the limp control means 3 using the reference value thus rationally set as a guide and displaying this as a control method of imposing sanctions when the usage of the hybrid electric vehicle is deviated, the driver can You will always pay attention to the storage rate of the battery, and you will start to practice charging.

The external charge lamp 26 blinks when a charging cord is connected to an external power supply. Further, when the charging cord is connected to the external power supply, the motor operation lamp 10 is not turned on, thereby preventing the vehicle from starting with the cord connected. Also,
If the cord is removed before the battery is fully charged and the charge is released, the external charge lamp 26 is turned on to warn the driver that the charge is not complete.

[0014]

According to the first or second aspect of the present invention, the driver recognizes that the sanctions by the limp control have been performed by displaying the limp display means for displaying the operation of the limp control means. In addition, it is possible to check the remaining mileage by the limp distance meter and take a subsequent charging procedure. As a result, the driver pays attention to the charging rate of the battery device, and the customization of the charging operation before the limp control is activated establishes the correct use of the hybrid electric vehicle.

According to the third aspect of the present invention, it is possible to prevent the vehicle from starting while the charging cord is connected to the external power source, and the driver is fully charged by the warning display that the battery is not fully charged. Can be recognized.

[Brief description of the drawings]

FIG. 1 is a front view of a traveling display device in a hybrid electric vehicle showing one embodiment of the present invention.

FIG. 2 is a flowchart illustrating a relationship between a traveling distance and an operation of a limp control unit.

FIG. 3 is a flowchart illustrating a modified example of a relationship between a traveling distance and an operation of a limp control unit.

[Explanation of symbols]

 3 limp control means 12 battery 26 external charge lamp 34 limp home lamp as limp display means 40 limp distance meter 44 switch button

Continued on the front page (56) References JP-A-8-9509 (JP, A) Japanese Utility Model Showa 58-63697 (JP, U) Japanese Utility Model Showa 58-70001 (JP, U) (58) Fields surveyed (Int) .Cl. ⁷ , DB name) B60K 35/00-37/00 B60L 3 / 00,11 / 00

Claims (3)

(57) [Claims] 1. A travel display device of a hybrid electric vehicle having a vehicle generator supplying power to the battery and the electric motor together to travel by driving the electric motor with battery power mounted on the vehicle, the integrated vehicle The mileage is further increased after the battery is fully charged.
After the battery is charged by using the generator, a limp control means for preventing the generator from operating when a predetermined value is reached, a limp display means for displaying the operation of the limp control means, A limp distance meter that displays a distance that the vehicle can travel without externally supplying new energy to the vehicle by the limp control means and that is reset when the battery is fully charged from the outside. A traveling display device for a hybrid electric vehicle. 2. The system according to claim 1, wherein said limp distance meter is also used as an odometer, and is set such that either one can be displayed by a switching button.
A travel display device in the hybrid electric vehicle according to the above. 3. Lighting when charging the battery from an external power source when charging is stopped before the battery is fully charged, and blinking when the battery is to be started without disconnecting from the external power source. The travel display device for a hybrid electric vehicle according to claim 1, further comprising an external charge lamp for driving the hybrid electric vehicle.