JPH11278178A - In-vehicle equipment drive system with external power supply - Google Patents

Abstract

(57) [Problem] To provide a system capable of driving an in-vehicle device by stopping an engine during parking to avoid environmental pollution by vehicle exhaust gas. A connector connected to a power supply system on a vehicle side.
In the parking lot, an external power supply for supplying power through the connector 17 is provided, and the same voltage as the voltage of the battery 1 is output by the AC / DC inverter 11 to the vehicle via the connectors 4 and 17. Electric power is supplied from the outside, and the electric power is used to drive the electric load 2 (vehicle-mounted device) so that the engine of the car can be stopped during parking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle device driving system using an external power supply for avoiding environmental pollution due to exhaust gas in a parking lot. The application of the present invention is a vehicle equipped with an engine (here, the engine is an internal combustion engine), and also includes a hybrid car using an electric motor.

[0002]

2. Description of the Related Art A tourist bus or the like parked in a parking lot at a tourist spot or the like often uses a cooler, a heater, or the like without stopping the engine while waiting for a customer in order to maintain comfort in the vehicle. Also, for passengers left in the car, radio,
In some cases, the television or lighting may be left on, and the engine is still running to turn on the charging generator (alternator). Furthermore, the engine is often kept running during a nap in a nap garage in a truck in a highway service area. In such a case, a large amount of exhaust gas is emitted to the same point, and the surrounding air is polluted.

Therefore, countermeasures such as idling stop are being developed. Also, the development of engines with low exhaust gas and vehicles that run on clean energy such as electricity and hydrogen has been actively pursued.

[0004]

Considering the distance that can be traveled by one charge or refueling, the arrangement of charging stations and refueling stations, etc., engines are most suitable for driving sources such as sightseeing buses and trucks. And there is no replacement for this at the moment.

[0005] In this engine-driven vehicle, even if the mounted engine has a small amount of exhaust gas, exhaust gas is emitted while the engine is operating. For this reason, idling stop when parking or stopping is demanded, but if the on-board equipment that consumes a large amount of power such as a cooler, a heater, or a heat exchanger of a cool car continues to be driven with the engine stopped, the on-board battery will rise. I can not drive the car.

If the number of mounted batteries is increased in order to avoid running out of the battery, the weight of the vehicle is increased, the fuel consumption is deteriorated, and a problem arises in terms of cost.

Accordingly, an object of the present invention is to provide a system in which an engine is stopped in order to eliminate environmental pollution due to exhaust gas during parking and a vehicle-mounted device can be driven without depending on a vehicle-mounted battery.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a vehicle-mounted device such as an air conditioner, an acoustic device, and a lighting fixture which receives power from a vehicle-mounted battery, and a battery charging generator. An internal power supply-equipped vehicle having a connector for connecting an external power supply is provided, so that when the vehicle is parked with the internal combustion engine stopped, the vehicle-mounted device can be driven by power supplied from the external power supply through the connector. Provide an in-vehicle equipment drive system using an external power supply.

The connector may be fixed to the vehicle body, or may be provided with an extension cable extending from the vehicle and stored in a storage box or the like together with the extension cable.

[0010] Further, an AC for converting an AC current to a DC current is provided.
The / DC inverter can be provided on the vehicle side, but is preferably included in external power supply equipment in order to avoid an increase in the weight of the vehicle. Further, in this case, it is preferable that the connector on the side of the external power supply equipment be capable of supporting both DC 12 V and DC 24 V.

In addition, the problem of environmental pollution due to exhaust gas is more serious in large parking lots such as service areas, parking areas, sightseeing spots, and department stores on expressways. It is desirable to provide it in a suitable place. When a power connection is provided in each parking booth of the parking lot and power is supplied to the vehicle from the power connection, idling of the parked vehicle can be stopped.

[0012] In the system of the present invention, an integrating wattmeter may be provided in the power supply unit so that a fee can be collected according to the power usage fee.

[0013]

According to the system of the present invention, the on-vehicle equipment is driven by electric power supplied from the outside via a connector provided in the vehicle. Therefore, the engine can be stopped when parking and the on-vehicle equipment can be used. Environmental pollution due to exhaust gas of the vehicle can be avoided.

[0014]

FIG. 1 shows an embodiment of a vehicle-mounted device driving system using an external power supply according to the present invention.

In FIG. 1, reference numeral 1 denotes a vehicle-mounted battery, 2 denotes an electric load, and SW3 denotes a switch provided in a power supply system of the vehicle.
Is a DC connector added to the vehicle.

The connector 4 has an extension cable 5 which is always connected to a power supply system of the vehicle. The extension cable 5 is easy to handle when a reel 7 is provided in a storage box 6 on the vehicle side, and the reel 7 can be wound around the reel 7 and pulled out from the reel. Note that a charging generator (alternator) driven by the engine of the vehicle is also connected to the battery 1, but is not shown in the figure.

In the case of the system shown in the figure, the external power supply equipment provided on the ground side comprises a plug 8, a fuse 9, a switch SW1, a switch SW1, an integrating wattmeter 10, a rectifier circuit and a switch SW2 which are inserted into an AC power outlet (not shown). AC / DC inverter 11 with built-in smoothing circuit, ammeter 12, fuse 1
3, diode 14, voltmeter 15, controller 16,
And a connector 17 to which the connector 4 is connected. The connector 17 may be mounted on a pole (an example of the pole 18 is shown in FIG. 2) at the side or the back of the parking booth, or may be attached to the partition if the parking booth has a partition wall. . The pole 18 shown in FIG. 2 is provided with a charge display section 19 and a printout section 20 for recording and imprinting the usage charge on a sheet.

The switch SW2 provided in the AC / DC inverter 11 is a switching power supply driven by a PWM signal generated from the controller 16. PWM
The duty ratio of the signal is determined based on the signal of the voltmeter 15, and the DC / DC inverter 11 outputs DC 12 V or DC 24 V power that matches the voltage of the battery 1.

In this embodiment, the battery 1 is a DC 12
In either case, the supply voltage is automatically switched by the switch SW2, and a current having a voltage corresponding to the voltage of the battery 1 is output from the AC / DC inverter 11. Alternatively, a manual switch may be provided.

The output of the integrating wattmeter 10 is
6, whereby a fee is determined in accordance with the power consumption of the vehicle. Then, the fee is displayed on a display unit (eg, 19 in FIG. 2) or printed out by a printer (eg, 20 in FIG. 2), and the user is charged.

The switch SW3 is a main switch of the vehicle. When the switch SW3 is turned on, the electric load 2 (on-vehicle equipment such as a radio, a cooler, and a lighting fixture) is energized.

In the illustrated system, when an external power supply is connected to the power supply system of the vehicle via the connector 4, the electric load 2 is driven by power supplied from the outside. Accordingly, the electric load 2 can be driven without any problem even when the engine is not stopped in which the alternator is not charged.

When the switch SW3 is OFF, the battery 1 can be charged from an external power supply.
When the ammeter 12 is provided, the charge amount of the battery 1 can be determined. When it is detected from the output of the ammeter 12 that the battery 1 is sufficiently charged, a command is issued from the controller 16, the switch SW1 is turned off, and the external power supply is stopped. In the case of the system shown in FIG. 1, even if the switch SW3 is turned on, the switch SW1 is turned off if the battery 1 is sufficiently charged. Then switch S
W1 is turned on again, the power supplied from the outside is used, and the battery charge recovers.

The diode 14 is provided for the purpose of preventing the battery 1 from discharging.

[0025]

As described above, according to the on-vehicle device drive system of the present invention, the on-vehicle device can be driven without stopping the engine of the car and causing the battery to run out.
This makes it possible to stop idling during parking, thereby preventing air pollution around the parking lot due to exhaust gas.

Although it is possible to supply power from the outside by connecting an external power supply to a battery with a booster cable or the like, this method is difficult to handle. While the risk of vehicle fire is conceivable, the system of the present invention provides high safety because the electrical connection is made by the connector.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an example of a vehicle-mounted device driving system according to the present invention.

FIG. 2 is a front view showing an example of mounting an external power supply side connector;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery 2 Electric load SW1-SW3 Switch 4, 17 Connector 5 Extension cable 6 Storage box 7 Reel 8 Plug 9, 13 Fuse 10 Integrated power meter 11 AC / DC inverter 12 Ammeter 14 Diode 15 Voltmeter 16 Controller 18 Pole 19 Fee Display section 20 Printout section

Claims (4)

[Claims] 1. A connector for connecting an external power supply is provided in an internal combustion engine-equipped vehicle having an in-vehicle device such as an air conditioner, an acoustic device, and a lighting fixture that receives power supply from an on-vehicle battery, and a generator for charging the battery. An in-vehicle device drive system using an external power supply, wherein the in-vehicle device can be driven by electric power supplied from the external power source through the connector when the vehicle is parked with the internal combustion engine stopped. 2. The in-vehicle device driving system using an external power supply according to claim 1, wherein the connector includes an extension cable extending from a vehicle. 3. An external power supply for supplying electric power to a vehicle is provided with A
2. An on-vehicle device using an external power supply according to claim 1, wherein an external power supply side connector including a C / DC inverter and connecting the connector is adapted for DC 12V, DC 24V, or both DC 12V and DC 24V. Drive system. 4. The external power supply according to claim 1, wherein an external power supply for supplying electric power to the vehicle via the connector is provided in a parking area such as a service area of an expressway, a parking area, a sightseeing spot, a department store, or the like. In-vehicle equipment drive system.