KR102201717B1 - Wireless charging system for transportation facilities using vehicles - Google Patents

Abstract

The present invention relates to a system configured to transmit an excessively produced power through a wireless communication scheme so that a power required for operating a traffic facility is wirelessly charged when a power request signal transmitted from the traffic facility requiring the power is received by a travelling vehicle while the power is excessively produced. According to the present invention, a wireless charging system for transportation facilities using vehicles includes: a power production unit including a generator provided in the vehicle to produce a power while travelling and a storage battery for storing the produced power; a determination unit for synthesizing an amount of the power produced and an amount of a power consumed, which are measured in real time, and an amount of the power stored in the storage battery to determine excessive production of the power; a power transmission unit for wirelessly transmitting the excessively produced power to an outside when a power request signal transmitted through a short-range wireless communication scheme is received; and a power reception unit provided in a traffic facility such as a street light and a bus stop installed along a road to transmit the power request signal through the short-range wireless communication scheme and receive the power wirelessly transmitted from the power transmission unit.

Description

Wireless charging system for transportation facilities using vehicles

The present invention relates to a system for wirelessly charging electric power required for the operation of traffic facilities installed along a road by using electric power produced by a driving vehicle, and more particularly, to a driving vehicle in a state in which electric power is excessively produced. When a power request signal transmitted from a traffic facility in this required state is received, it is configured to transmit excess power through a wireless communication method, and the system relates to a system that enables the power required for operation of the traffic facility to be wirelessly charged. .

In general, various traffic facilities, such as traffic lights, street lights, and information boards, may be installed on a road or the periphery of a road constructed for the purpose of driving a vehicle, and these traffic facilities may be flashed or lit, and for displaying signals. Power supply is essential.

In addition, recently, among various devices such as a guide device that displays information on the arrival time of the bus for the user's convenience, a smart bench that adjusts the temperature of the top plate according to the season, and a screen door that automatically opens and closes when the bus arrives. At least one of them is installed at each bus stop, and for this reason, the total amount of power required for the operation of transportation facilities is increasing significantly than before.

In this regard, as an invention related to power sharing between vehicles and facilities, “Power Management Device and Method for Sharing and Using Power of Vehicles” in Korean Patent Application Publication No. 10-2015-0077144, Korean Patent Publication No. 10- “System and method for wirelessly charging electric vehicles using transportation facilities” of 2018438 and “Wireless power charging system using transportation facilities and wireless power charging method” of Korean Patent Publication No. 10-2019-0136359 The invention has been proposed and disclosed.

First of all, the Korean Patent Application Laid-Open No. 10-2015-0077144 is configured so that each household can share and use the electric power charged in the electric vehicle during a time when the price is relatively low. An invention has been proposed for an apparatus and method that allows savings.

In addition, the Republic of Korea Patent Publication No. 10-2018438 collects battery remaining amount information and movement information of an electric vehicle in real time, determines the necessity of power supply in consideration of the location of a charging station within a movable distance, and utilizes transportation facilities. Accordingly, an invention has been proposed for a system and method capable of wirelessly supplying power to an electric vehicle requiring power supply.

In addition, the Korean Patent Laid-Open Publication No. 10-2019-0136359 discloses a system configured to wirelessly charge a battery of an electric vehicle running with a wireless power receiver installed using a transportation facility equipped with a wireless power transmitter in real time, and An invention of the method has been proposed.

That is, all of the conventional inventions as described above are configured to supply electric power to a running electric vehicle for only electric vehicles, or to supply electric power charged in a stationary electric vehicle to a facility only when it is still stopped. to be.

Therefore, the conventional inventions as described above have limitations that cannot be used for general vehicles other than electric vehicles, and rather, they only increase the total amount of power required for the operation of transportation facilities, and increase the power consumption of transportation facilities significantly. A problem arises that cannot be a solution to the problem.

For this reason, in the operation of traffic facilities installed along the road, there is a need for an apparatus or system to effectively solve a problem in which the amount of electric power has increased significantly than before.

Korean Patent Application Publication No. 10-2015-0077144 (2015. 07. 07.) Korean Registered Patent Publication No. 10-2018438 (2019. 08. 29.) Korean Patent Application Publication No. 10-2019-0136359 (December 10, 2019)

The wireless charging system for traffic facilities using a vehicle according to the present invention is an invention proposed to effectively solve the problem that the amount of power consumption has increased significantly than before in the operation of traffic facilities installed along the road,

All of the conventional inventions related to this are inventions that are configured to supply power to an electric vehicle that is running only for an electric vehicle, or to supply power charged in an electric vehicle that is stopped to a facility only when it is still stationary.

A problem that cannot be used for general vehicles other than electric vehicles arises, and at the same time, it increases the total amount of power required for the operation of transportation facilities, and cannot be a solution to the significantly increased power consumption than before. Therefore, its purpose is to present a solution to this.

The present invention is to achieve the above object,

A power generation unit provided in the vehicle and comprising a generator for generating electric power while driving and a storage battery for storing the generated electric power; A determination unit for determining excessive production of power by synthesizing the amount of power production and consumption measured in real time and the amount of power stored in the storage battery; When a power request signal transmitted through a short-range wireless communication method is received, a power transmission unit for wirelessly transmitting excess power to the outside; And a power receiver provided in traffic facilities such as streetlights and bus stops installed along the road to transmit a power request signal through a short-range wireless communication method and receive power wirelessly transmitted from the power transmitter. It proposes a wireless charging system for transportation facilities using a vehicle, characterized in that it is configured to include.

The wireless charging system for transportation facilities using a vehicle according to the present invention,

In carrying out the invention, there is an effect that can be used not only for electric vehicles but also for all general vehicles equipped with engines, generators and storage batteries,

Since it is configured to use excessively produced power among the power produced by the driving vehicle, the effect of being able to cover a considerable amount of power required for the operation of transportation facilities is generated by using the wasted power.

1 is a basic configuration diagram of a wireless charging system for transportation facilities using a vehicle according to the present invention.
2 is a basic configuration diagram of a power generation unit.
3 is a judgment algorithm of the determination unit.
4 is an additional configuration diagram of a wireless charging system for transportation facilities using a vehicle according to the present invention.
5 is an exemplary view showing an embodiment of the use of a wireless charging system for transportation facilities using a vehicle according to the present invention.

The present invention relates to a system for wirelessly charging traffic facilities installed along a road by using electric power produced by a driving vehicle,

A power generation unit 100 comprising a generator provided in the vehicle to generate electric power while driving and a storage battery 102 for storing the generated electric power; A determination unit 110 for determining excessive production of power by synthesizing the amount of power production and consumption measured in real time and the amount of power stored in the storage battery 102; When a power request signal transmitted through a short-range wireless communication method is received, a power transmission unit 120 for wirelessly transmitting excess power to the outside; And a power receiving unit 130 provided in traffic facilities such as streetlights and bus stops installed along the road, transmitting a power request signal through a short-range wireless communication method, and receiving power wirelessly transmitted from the power transmitting unit 120; It relates to a wireless charging system for transportation facilities using a vehicle, characterized in that configured to include.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the power generation unit 100 shown in FIG. 1 is a set of devices that generate and store power essential or additionally required for driving of a vehicle, and since the engine must be driven in power generation, It must be located on the front side and provided inside the engine room in which the engine is mounted.

That is, as shown in FIG. 2, the power generation unit 100 has a basic configuration of a generator 101 that is provided in a vehicle to generate power while the vehicle is running, and a storage battery 102 that stores the generated power.

At this time, as the type of the generator 101 constituting the power generation unit 100, power generation is possible even when the engine is rotated at a low speed or idling, the weight is light compared to the output, and the use of an AC generator with a relatively long life It is preferable, and there is no other limitation on the capacity of the generator 101 and the storage battery 102 except for this.

In addition, the power produced by the power generation unit 100 and essential or additionally required for the driving of the vehicle means starting the engine, the dashboard of the vehicle, the headlight, the rear light, the interior light, the navigation, the TV, the air conditioner, the radio, the cigar jack, and This refers to the power required for the use of various sensors, and the power required for the driving of an electric vehicle or a hybrid vehicle, that is, the continuous driving of the started engine, is excluded.

Therefore, while the conventional inventions related to the transmission and reception of power between a vehicle traveling on a road and surrounding facilities installed along the road are all configured to be limited to an electric vehicle, the present invention is not limited to the engine, generator and An effect applicable to all vehicles equipped with a storage battery occurs.

In addition, the determination unit 110 shown in FIG. 1 is a device that determines excessive production of power by the power generation unit 100, and is preferably configured as a central processing unit capable of specific calculations using given data. In the determination, the amount of power production and consumption calculated or measured in real time, and the amount of power stored in the storage battery 102 may be combined and used.

That is, the determination unit 110 includes the amount of power produced per unit time calculated according to the capacity of the generator 101 provided in the vehicle, the amount of power consumption including both the amount of power consumption and standby power of the vehicle measured in real time, and a storage battery measured in real time. By synthesizing all of the stored power in (102), it is possible to determine the excess production of power in real time.

Therefore, the present invention is premised on the provision of a standby wattmeter for measuring the amount of standby power, a wattmeter for measuring the amount of power consumption, and a measuring device for measuring the amount of power stored in the storage battery 102 for the function of the determination unit 110 It is a condition.

Meanwhile, an embodiment of the present invention according to the above configuration is as follows.

Specifically, as shown in FIG. 3, the determination unit 110 may be configured not to determine the excessive production of power when the power production per unit time is less than or equal to the power consumption, and the power production per unit time If it exceeds, the storage battery 102 may be determined as a state in which power is excessively produced when the battery 102 is fully charged or charged at a predetermined rate or higher.

At this time, a certain ratio of the storage battery 102 for determining the excessive production of power may be variously set to 70%, 80%, etc. according to the capacity of the storage battery 102.

Therefore, even if the storage battery 102 is fully charged, the determination unit 110 does not determine the excessive production of power or the state in which the power is excessively produced when the amount of power produced per unit time is less than or equal to the power consumption amount, Even when the amount of power produced per unit time exceeds the amount of power consumption, excessive production of power is reasonably determined in consideration of the amount of power stored in the storage battery 102.

As described above, the present invention is configured to wirelessly transmit additionally over-produced power to the outside only when sufficient power necessary or additionally required for driving of a vehicle is secured, and even in a state in which power is wirelessly transmitted to the outside When the amount of power produced per hour is less than or equal to the amount of power consumption, the safety of the driving vehicle is prioritized, and the wireless transmission of power is immediately stopped.

In addition, as shown in FIG. 1, the power transmission unit 120 is a device for wirelessly transmitting power excessively produced from the power generation unit 100 to the outside.

At this time, the power transmission unit 120 is configured to transmit excess power to the traffic facility only when a power request signal transmitted through a short-range wireless communication method is received from a traffic facility installed along the road, and transmits power wirelessly. As a method, any one of known various wireless power transfer technologies may be used.

As an embodiment of the present invention, the power transmission unit 120 may be configured to use a magnetic resonance wireless power transmission technology in consideration of a distance between a vehicle and a traffic facility.

Therefore, the power transmission unit 120 resonates using the same frequency as the power reception unit 130 that transmitted the power request signal among the power reception units 130 provided in the transportation facility, thereby transmitting power to the power reception unit 130. You will be able to.

At this time, the wireless transmission of power generated between the power transmission unit 120 and the power reception unit 130 does not necessarily occur on a one-to-one basis, and simultaneously from one power transmission unit 120 to a plurality of power reception units 130 Electric power may be supplied, and as the vehicle travels, the power receiving unit 130 that is a target of wireless transmission of electric power may be changed.

Therefore, the frequency used for wireless power transmission between the power transmitter 120 and the power receiver 130 is always the same frequency, and for the same reason, the power request signal transmitted from the power receiver 130 is identified with other signals. The identification signal for is used.

In addition, the power transmission unit 120 may detect a distance to the nearest power receiving unit 130 and adjust the power transmission output according to the distance.

In addition, the power transmission unit 120 is most preferably installed on the roof side of the vehicle so that interference or interference by the structure of the vehicle can be minimized when transmitting power to the power receiving unit 130, but it is always limited thereto. It does not become.

Therefore, the power receiving unit 130 is at the upper end of traffic lights, street lights, bus stops, etc. installed along the road so that interference or interference by vehicles, etc. can be minimized when power is supplied from the power transmission unit 120. It is most preferable to be installed, but is not necessarily limited thereto.

In addition, the present invention is mainly based on a state in which a vehicle is running in a city, but since it is necessary to supply power to traffic facilities such as street lights installed along a highway, the plurality of power receivers 130 are located in the center of the highway. It may be installed at regular intervals along the separator or guard rail, and in this case, the shape of the power receiver 130 is configured in a diversified shape, so that the power reception state can be kept constant even in a section such as a curve.

In addition, the power receiving unit 130 is a device that is provided in traffic facilities such as streetlights and bus stops installed along a road to receive power wirelessly transmitted from the power transmission unit 120 as shown in FIG. As a method of receiving a magnetic resonance type wireless power transmission technology that resonates using the same frequency as the power transmission unit 120 may be used.

Therefore, the transportation facility provided with the power receiving unit 130 must be provided with a battery for storing the received power transmitted from the power transmitting unit 120, and the power meter for measuring the power consumption and the amount of power stored in the battery. It should be equipped with a measuring device for measuring

Meanwhile, the power receiving unit 130 may be configured to transmit a power request signal through a short-range wireless communication method only when charging of power is required, and through this configuration, it is possible to prevent loss of power due to excessive supply of power. In addition, it is possible to prevent a phenomenon in which power supply may be concentrated only on specific transportation facilities according to the location where each of the transportation facilities is installed.

Therefore, as shown in Fig. 4, the operation of determining the transmission of the power request signal by synthesizing operation information such as the energy consumption per hour of the transport facility and the amount of power stored in the battery in traffic facilities such as streetlights and bus stops installed along the road. The unit 140 may be provided, and a criterion for determining transmission of the power request signal may be set differently according to the location where each traffic facility is installed.

That is, the traffic facilities provided with the power receiving unit 130 may have sufficient or insufficient amount of power supplied from the vehicle depending on the traffic volume of the road. However, it is desirable that the supply of electricity can occur at any time or relatively frequently, but the transportation facilities provided on a road with a relatively sufficient amount of traffic should allow the supply of electric power from the vehicle to occur relatively rarely.

Further, as shown in FIG. 4, the present invention is provided in a traffic facility such as a streetlight or a bus stop installed along a road, and transmits the excessively received power through the power receiving unit 130 to the outside by wired power transmission unit 150 ) And a power storage unit 160 for receiving and storing power transmitted by wire from the power transmission unit.

Therefore, in this case, it is preferable that the power receiver 130 is configured to always transmit a power request signal through a short-range wireless communication method, and the power received by the power receiver 130 is pre-used for charging the battery, but the battery After being fully charged, it is transmitted to the power storage unit 160 through the power transmission unit 150 by wire, so that it can be used for the operation of transportation facilities in case of emergency, and can be used for other purposes as necessary.

That is, the power storage unit 160 is configured to supply the stored power transmitted from the power transmission unit 150 to the traffic facilities that are transmitting the power request signal due to insufficient power among traffic facilities such as streetlights and bus stops installed along the road. Can be.

This means that during the late night or early morning, when the vehicle traffic decreases sharply, the amount of power charged decreases rapidly.However, the operation of traffic facilities such as streetlights continues regardless of the amount of traffic of the vehicle, so the remaining amount of the battery is very insufficient compared to the amount of power used. It is in preparation for the situation in which you do.

In this case, the power storage unit 160 may be configured to be installed one for each transportation facility, and one power storage unit 160 may be connected to several power transmission units 150 to mutually supply power. .

In addition, the present invention divides the time period during which the vehicle traffic of the road is maintained above a certain level and the time period during which the vehicle traffic decreases sharply, and the operation unit 140 is used in the time period when the vehicle traffic is maintained above a certain level. It is configured to determine the transmission of the power request signal by synthesizing the operating information such as the energy consumption per hour and the stored power amount of the vehicle, but the transmission of the power request signal through the power receiver 130 is always generated during a time when the vehicle traffic volume decreases sharply. Can be.

At this time, the time period during which the vehicle traffic volume of the road increases and is maintained above a certain level may be configured to include a time from 6 am to midnight, and the time period in which the vehicle traffic volume decreases sharply includes the time from midnight to 6 am. Although it may be configured, it is preferable that the configuration of such a time zone is configured differently for each road in consideration of the amount of vehicle traffic on each road.

The above configuration minimizes the difference in the amount of electric power charging according to the location where each transportation facility is installed during times when the vehicle traffic is maintained above a certain level, but focuses on charging or securing power during times when the vehicle traffic decreases sharply. Is to do.

The embodiments introduced above are provided by way of example in order to sufficiently convey the technical idea of the present invention to those of ordinary skill in the technical field to which the present invention pertains, and the present invention is based on the above-described embodiments. It is not limited and may be embodied in other forms.

In order to clearly describe the present invention, parts irrelevant to the description are omitted from the drawings, and in the drawings, the width, length, thickness, etc. of the components may be exaggerated or reduced for convenience.

In addition, the same reference numbers throughout the specification indicate the same elements.

100: power generation department → 101: generator
102: storage battery
110: judgment unit
120: power transmission unit
130: power receiver
140: operation department
150: power transmitter
160: power storage unit
A: Vehicle
B: Transportation facilities

Claims (4)

A power generation unit 100 including a generator 101 that is provided in a vehicle to generate power while driving and a storage battery 102 that stores the generated power;
A determination unit 110 that synthesizes the amount of power production and consumption measured in real time and the amount of power stored in the storage battery 102 to determine excessive production of power;
When a power request signal transmitted through a short-range wireless communication method is received, a power transmission unit 120 for wirelessly transmitting excess power to the outside;
A power receiving unit 130 provided in traffic facilities such as streetlights and bus stops installed along the road, transmitting a power request signal through a short-range wireless communication method, and receiving power wirelessly transmitted from the power transmitting unit 120; And,
An operation unit 140 that is provided in traffic facilities such as streetlights and bus stops installed along the road, and determines transmission of a power request signal by synthesizing operation information such as an hourly energy consumption amount and stored power amount of the traffic facility; Transportation facility wireless charging system using a vehicle, characterized in that configured to include.
delete The method of claim 1,
A power transmission unit 150 provided in traffic facilities such as streetlights and bus stops installed along the road to wire-transmit power received excessively through the power receiving unit 130 to the outside; And,
A power storage unit 160 for receiving and storing power transmitted by wire from the power transmission unit 150; Transportation facility wireless charging system using a vehicle, characterized in that configured to include.
The method of claim 3,
The power storage unit 160,
A traffic facility wireless charging system using a vehicle, characterized in that configured to supply the stored power to a traffic facility that is transmitting a power request signal due to insufficient power among traffic facilities such as streetlights and bus stops installed along a road.

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