KR101146644B1 - Power supply system and method for non contact electromagnetic inductive charging of electric vehicle - Google Patents

Abstract

An electric vehicle power supply system and method of a non-contact magnetic induction charging method is for supplying power to a drive motor for driving an electric vehicle. The system includes a power distribution unit for supplying the driving voltage received from the regulator to the driving motor and distributing surplus power generated in the driving motor to the charging unit and the resistance circuit unit. Therefore, the power distribution unit efficiently distributes the input voltage and supplies the constant voltage to the charging unit, thereby driving the electric vehicle stably, extending the life of the charging unit, and improving the efficiency of power supply.

Electric vehicles, non-contact magnetic induction charging, plug-in charging, power distribution unit (PDU), resistance circuit unit (RCU), DC-DC converter

Description

Non-contact magnetic induction charging system and method for electric vehicle power supply {POWER SUPPLY SYSTEM AND METHOD FOR NON CONTACT ELECTROMAGNETIC INDUCTIVE CHARGING OF ELECTRIC VEHICLE}

The present invention relates to an electric vehicle power supply system and method of a non-contact magnetic induction charging method, and more particularly, to an electric vehicle power supply system and method of a non-contact magnetic induction charging method for the power distribution unit to efficiently distribute the input voltage. will be.

The demand for automobiles is exploding with economic development, and as the demand for automobiles increases, the exhaust gas emitted from automobiles is the main cause of environmental pollution.

Accordingly, there is a demand for reducing the emission of automobiles, and research and development of automobiles that can reduce the emission of gas are proceeding. Furthermore, commercialization of electric vehicles that do not generate emissions is partially attempted.

An electric vehicle refers to a vehicle that operates by using electricity as a power source, and includes a battery that can be charged as a power source in the vehicle itself, and operates by using electric power supplied from the mounted battery. The electric vehicle is largely composed of an electric motor driven by electricity to drive the electric vehicle, and a battery supplying electricity to the electric motor.

Recently, the plug-in charging method has been mainly used and developed to supply and charge the battery. The plug-in method refers to a method of supplying and charging power to a battery once through a plug-in charging device of an electric vehicle and operating the electric vehicle by using the same.

The plug-in charging method takes a long time to charge the battery for an electric vehicle, and the distance driven by charging once is limited. In general, charging of an electric vehicle takes about 1 to 8 hours, and it is difficult to manage the vehicle safely during such a long charging time.

Therefore, the electric vehicle has to be frequently charged in order to secure the intended travel distance, so the installation of the charging station and the charging system are very important issues in the operation of the electric vehicle.

In addition, the charging should be performed while being not affected by the external environment such as rain or snow during charging. Furthermore, when the charging system of an electric vehicle is shaped like a current gas station, it cannot meet the demand for charging.

As such, there is a need to build a charging system and a power supply system suitable for the commercialization of an electric vehicle.

An object of the present invention is to distribute the input voltage efficiently and supply a constant voltage to the charging unit, the electric vehicle can drive the electric vehicle stably, non-contact magnetic induction to extend the life of the charging unit and improve the efficiency of power supply It is to provide a charging type electric vehicle power supply system.

Another object of the present invention is to provide an electric vehicle power supply method of a non-contact magnetic induction charging method for supplying power to an electric vehicle using the power supply system.

In order to achieve the above objects of the present invention, an electric vehicle electric power supply system of a non-contact magnetic induction charging method according to embodiments of the present invention is a system for supplying power to a driving motor for driving an electric vehicle. It is disposed between the regulator and the driving motor, a regulator for receiving the collected voltage and converting it into a driving voltage, a charging unit for supplying the charging power charged therein to the driving motor, a resistor circuit for consuming the input power; And a power distribution unit for supplying the driving voltage received from the regulator to the driving motor and distributing surplus power generated in the driving motor to the charging unit and the resistance circuit unit.

In embodiments of the present invention, the power distribution unit supplies the surplus power to the charging unit when the constant voltage corresponding to the surplus power input from the driving motor does not exceed the charging allowance voltage of the charging unit. When the constant voltage corresponding to the surplus power input from the driving motor exceeds the charge allowance voltage of the charger, surplus power corresponding to the charge allowance voltage is supplied to the charger, and surplus power exceeds the charge allowance voltage. The part is supplied to the resistor circuit portion.

In embodiments of the present invention, the system is disposed between the power distribution unit and the charging unit for converting the voltage of the surplus power supplied from the power distribution unit to a constant voltage having a constant magnitude for supplying to the charging unit It may further include a DC-DC converter.

In embodiments of the present invention, the charging unit is a battery for supplying a first charging power to the drive motor, and to supply the second charging power having a larger size per unit time than the first charging power to the drive motor. It includes a super capacitor.

In embodiments of the present invention, the DC-DC converter supplies the voltage received from the power distribution unit to any one of the battery and the super capacitor based on the battery charge allowance voltage.

According to the electric vehicle power supply method of the non-contact magnetic induction charging method according to the embodiments of the present invention in order to achieve the above objects of the present invention, first collects the AC voltage from the feeder line embedded in the road, Convert AC voltage to DC voltage. The DC voltage is supplied to the drive motor. In addition, it is determined whether surplus power is generated in the driving motor. As a result of the determination, when the surplus power is generated, the surplus power is distributed to the charging unit and the resistance circuit unit according to the magnitude thereof.

In embodiments of the present invention, the step of distributing the surplus power, specifically, determines whether the constant voltage corresponding to the surplus power exceeds the charge allowance voltage of the charging unit. As a result of determination, when the constant voltage corresponding to the surplus power does not exceed the charge allowable voltage of the charging unit, the surplus power is supplied to the charging unit. If the constant voltage corresponding to the surplus power exceeds the charging allowance voltage of the charging unit, the surplus power corresponding to the charging allowance voltage is supplied to the charging unit, and the surplus power portion exceeding the charging allowance voltage is supplied. Supply to the resistance circuit section.

In embodiments of the present invention, supplying the surplus power to the charging unit specifically includes receiving the surplus power, converting the received surplus power into a constant voltage having a predetermined magnitude, and the constant voltage of the battery. It is determined whether the charge allowable voltage is exceeded. As a result of determination, when the constant voltage does not exceed the charge allowable voltage of the battery, the constant voltage is supplied to the battery. As a result of the determination, when the constant voltage exceeds the charge allowable voltage of the battery, the constant voltage is supplied to the super capacitor.

According to the electric vehicle power supply system and method of the non-contact magnetic induction charging method according to the present invention as described above has the following effects.

First, the battery life can be extended by converting the DC voltage supplied from the regulator into a constant voltage having a constant size to charge the battery and the super capacitor.

Second, when the electric vehicle needs relatively large power, such as rapid acceleration and rapid start, the battery and the super capacitor additionally supply charging power to the driving motor, thereby efficiently driving and driving the electric vehicle.

Third, power supply and battery charging can be efficiently performed by distributing the input voltage to the driving motor, the charging unit, and the resistance circuit unit under certain conditions.

Fourth, when surplus power exceeding the allowable range of the charging section is generated in the drive motor, the excess power portion is supplied to the resistance circuit section for consumption by the power distribution section, so that excessive voltage is supplied to the charging section to reduce the life of the charging section. Can be prevented.

With reference to the accompanying drawings will be described in detail with respect to the electric vehicle power supply system and method of a non-contact magnetic induction charging method according to embodiments of the present invention. As the inventive concept allows for various changes and numerous modifications, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structure is shown to be larger than the actual for clarity of the invention, or reduced to show the actual configuration in order to understand the schematic configuration.

In addition, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is a block diagram illustrating an electric vehicle power supply system of a non-contact magnetic induction charging method according to embodiments of the present invention.

Referring to FIG. 1, an electric vehicle power supply system (hereinafter referred to as the “system”) of a non-contact magnetic induction charging method according to embodiments of the present invention supplies power to a driving motor for driving an electric vehicle, and surpluses A system that distributes power to live parts and resistor circuits.

Accordingly, the system 1 includes a pickup module 20, a regulator 30, a power distribution unit 40, a drive motor 50, a DC-DC converter 60, a charging unit 70, and a resistance circuit unit 80. Include.

The pickup module 20 collects AC power in the form of a magnetic field from the feed line 10 embedded in the road.

The regulator 30 converts AC power collected by the pickup module 20 into DC power. At this time, the DC voltage becomes a driving voltage for driving the driving motor 50.

The power distributor 40 is disposed between the regulator 30 and the drive motor 50. In embodiments of the present invention, the power distribution unit 40 transfers the driving voltage received from the regulator 30 to the driving motor 50 through the main controller 55. When the surplus power is generated in the driving motor 50, the power distributor 40 distributes the surplus power to the charging unit 70 and the resistor circuit unit 80. That is, the power distributor 40 continuously supplies the driving power from the regulator 30 to the driving motor 50, and the surplus power from the driving motor 50 when surplus power is generated in the driving motor 50. It receives the input to the charging unit 70 and the resistor circuit unit 80 to distribute.

In addition, the power distribution unit 40 compares the magnitude of the constant voltage corresponding to the surplus power received from the driving motor 50 and the allowable voltage of the charging unit 70. As a result of the comparison, when the constant voltage corresponding to the surplus power does not exceed the charge allowance voltage of the charger 70, the power distributor 40 supplies the surplus power to the charger 70. As a result of the comparison, when the constant voltage corresponding to the surplus power exceeds the charging allowance voltage of the charging unit 70, the power distributor 40 supplies the surplus power corresponding to the charging allowance voltage to the charging unit 70. The surplus power portion exceeding the charge allowance voltage is supplied to the resistor circuit unit 80. That is, the power distributor 40 supplies surplus power corresponding to the charge allowable voltage range of the charger 70 to the charger 70, and supplies surplus power corresponding to the portion exceeding the charge allowable voltage range to the resistance circuit unit 80. Supplies).

The DC-DC converter 60 is disposed between the power distribution unit 40 and the charging unit 70. In the embodiments of the present invention, the DC-DC converter 60 converts the surplus power of the driving motor 50 received from the power distribution unit 40 into a constant voltage having a predetermined magnitude. That is, the DC-DC converter 60 converts the unstable voltage into a constant voltage having a predetermined magnitude and supplies it to the charging unit 70.

The charging unit 70 supplies the charging power charged therein to the driving motor 50. For example, when the driving motor 50 requires additional power and voltage in addition to the driving voltage from the power distribution unit 40, the charging unit 70 additionally supplies charging power to the driving motor 50.

The charging unit 70 includes a battery 70a and a super capacitor 70b. For example, the battery 70a supplies the first charging power to the driving motor 50, and the super capacitor 70b supplies the second charging power to the driving motor 50. In this case, the second charging power has a larger size per unit time than the first charging power. For example, when a large amount of power is additionally required in the driving motor 50, the super capacitor 70b supplies the second charging power to the driving motor 50, and continuously the small power in the driving motor 50. If the battery 70a is additionally required, the battery 70a supplies the first charging power to the driving motor 50.

In the embodiments of the present invention, the DC-DC converter 60 receives the surplus power from the power distribution unit 40 and converts the surplus power into a constant voltage, and then converts the constant voltage based on the charge allowance voltage of the battery 70a. It distributes to the battery 70a and the super capacitor 70b.

For example, the DC-DC converter 60 compares the constant voltage with the magnitude of the charge allowable voltage of the battery 70a. As a result of the comparison, when the constant voltage does not exceed the charge allowable voltage of the battery 70a, the DC-DC converter 60 supplies the constant voltage to the battery 70a. As a result of the comparison, when the constant voltage exceeds the charge allowable voltage of the battery 70a, the DC-DC converter 60 supplies the constant voltage to the supercapacitor 70b.

The resistance circuit unit 80 consumes input power therein. In the embodiments of the present invention, the resistor circuit 80 consumes power input from the power divider 40 therein. That is, when the surplus power generated by the driving motor 50 exceeds the charge allowable range of the charging unit 70, the power distribution unit 40 supplies the excess portion to the resistance circuit unit 80 to consume it internally. . The resistor circuit 80 is provided with a resistor circuit for consuming power input therein. Alternatively, the resistor circuit 80 may include various elements for consuming power in addition to the resistor circuit.

In embodiments of the present invention, the system 1 may further include a relay unit 90 disposed between the regulator 30 and the power distribution unit 40.

The relay unit 90 cuts off the power from the regulator 30 under certain conditions. For example, when a high voltage of a considerable magnitude is input from the regulator 30, when the driving motor 50 can no longer consume power, when the power distribution unit 40 can not efficiently distribute power. In case of an emergency, such as when a fatal defect occurs in an electric vehicle, the relay unit 90 cuts off the power supplied from the regulator 30.

As such, the system 1 efficiently distributes the power and power received from the regulator 30 to the driving motor 50, the charging unit 70, and the resistance circuit unit 80 by using the power distribution unit 40. Can be. In addition, the power distribution unit 40 of the present system 1 can charge the charging unit 70 by a constant voltage through the DC-DC converter 60, thereby stably charging the charging unit 70, thereby extending its lifespan. Can be. Furthermore, the resistance circuit portion 80 of the present system 1 consumes internally for a voltage exceeding the charge allowable voltage range of the charging portion 70, thereby preventing excessive voltage from being supplied to the charging portion and reducing the life of the charging portion. can do.

2 is a flowchart illustrating a method for supplying electric vehicle of a non-contact magnetic induction charging method according to embodiments of the present invention.

Referring to Figure 2, according to the electric vehicle power supply method of the non-contact magnetic induction charging method according to the embodiments of the present invention, the pickup module first collects the AC voltage from the feeder line embedded in the road (S10), the regulator The collected AC voltage is converted into a DC voltage (S20).

Subsequently, the power distribution unit supplies the DC voltage to the driving motor (S30). At this time, the DC voltage becomes a driving voltage for driving the driving motor.

The power distribution unit determines whether surplus power is generated in the driving motor (S40).

As a result of the determination, when surplus power is generated, the power distribution unit distributes the surplus power to the charging unit and the resistance circuit unit according to the magnitude thereof.

In embodiments of the present invention, the power distribution unit determines whether the surplus power is within the charge allowable range of the charging unit in order to distribute the surplus power to the charging unit and the resistance circuit (S50).

As a result of the determination, when the constant voltage corresponding to the surplus power does not exceed the charge allowable voltage of the charging unit, the surplus power is supplied to the charging unit (S60).

Specifically, in order to supply the surplus power to the charging unit, the DC-DC converter receives the surplus power from the power distribution unit, and converts the received surplus power into a constant voltage having a predetermined magnitude. The DC-DC converter then determines whether the constant voltage exceeds the charge allowable voltage of the battery. As a result of the determination, when the constant voltage does not exceed the charge allowable voltage of the battery, the DC-DC converter supplies the constant voltage to the battery. As a result of the determination, when the constant voltage exceeds the charge allowable voltage of the battery, the DC-DC converter supplies the constant voltage to the supercapacitor.

Therefore, the power distribution unit supplies a constant voltage to the battery and the super capacitor through the DC-DC converter to charge, thereby greatly improving the charging efficiency and extending the life of the battery.

In embodiments of the present invention, the power distribution unit determines that the surplus power is within the charge allowable range of the charging section, and when the constant voltage corresponding to the surplus power exceeds the charge allowable voltage of the charging section, It is distributed to the charging unit and the resistor circuit (S70). In detail, the power distributor supplies surplus power corresponding to the charge allowance voltage to the charger, and supplies a surplus power portion exceeding the charge allowance voltage to the resistor circuit unit.

Therefore, when excess power exceeding the allowable range of the charging section is generated in the drive motor, the excess power portion is supplied to the resistance circuit section for consumption and consumed, so that excessive voltage is supplied to the charging section to reduce the life of the charging section. You can prevent it.

According to this method, the power distribution unit efficiently distributes surplus power from the driving motor to the charging unit and the resistance circuit unit, thereby stably driving the circuit of the whole system and extending the life of each component.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

1 is a block diagram illustrating an electric vehicle power supply system of a non-contact magnetic induction charging method according to embodiments of the present invention.

2 is a flowchart illustrating a method for supplying electric vehicle of a non-contact magnetic induction charging method according to embodiments of the present invention.

<Description of the symbols for the main parts of the drawings>

1: electric vehicle power supply system

10: feed line 20: pickup module

30 regulator 40 power distribution unit

50: drive motor 60: DC-DC converter

70: charging part 70a: battery

70b: super capacitor 80: resistor circuit

Claims (8)

In a system for supplying power to a drive motor for driving an electric vehicle, A regulator which receives a voltage collected from a feed line and converts the voltage into a driving voltage; A charging unit supplying the charging power charged therein to the driving motor; A resistor circuit unit for consuming input power; A power distribution unit disposed between the regulator and the driving motor to supply a driving voltage received from the regulator to the driving motor, and to distribute surplus power generated from the driving motor to the charging unit and the resistance circuit unit; A DC-DC converter disposed between the power distribution unit and the charging unit to convert the voltage of the surplus power supplied from the power distribution unit into a constant voltage having a predetermined magnitude and supply the same to the charging unit; And A non-contact magnetic induction charging type electrical system including a relay unit disposed between the regulator and the power distribution unit to block a voltage from the regulator when at least one of the regulator, the power distribution unit, and the driving motor is defective. Automotive power supply system. The method of claim 1, wherein the power distribution unit The surplus power input from the driving motor is based on the magnitude of the constant voltage converted in the DC-DC converter, When the constant voltage corresponding to the surplus power input from the driving motor does not exceed the charge allowance voltage of the charging unit, the surplus power is supplied to the charging unit, When the constant voltage corresponding to the surplus power input from the driving motor exceeds the charging allowance voltage of the charging unit, the surplus power corresponding to the charging allowance voltage is supplied to the charging unit, and the surplus power portion exceeding the charging allowance voltage. Non-contact magnetic induction charging type electric vehicle power supply system, characterized in that for supplying to the resistor circuit. delete The method of claim 1, A battery supplying a first charging power to the driving motor; And And a super capacitor for supplying a second charging power having a larger size per unit time than the first charging power to the driving motor. The method of claim 4, wherein the DC-DC converter The electric vehicle power supply system of the non-contact magnetic induction charging method, characterized in that for supplying the voltage received from the power distribution unit to any one of the battery and the super capacitor based on the battery charge allowance voltage. In the method for supplying power to a drive motor for driving an electric vehicle, Converting an AC voltage collected from a feeder line embedded in a road into a DC voltage by a regulator; Supplying the DC voltage to the driving motor by a power distributor; Determining whether the power distribution unit generates surplus power in the driving motor; And In response to the determination, when the surplus power is generated, the power distributor includes the step of distributing the surplus power to the charging unit and the resistor circuit according to the magnitude, Distributing the surplus power by the power distribution unit Converting surplus power received from the driving motor into a constant voltage having a predetermined magnitude; Determining whether the constant voltage exceeds a charge allowable voltage of a battery; Supplying the constant voltage to the battery when the constant voltage does not exceed the charge tolerance voltage of the battery as a result of determining whether the constant voltage exceeds the charge tolerance voltage of the battery; And And determining that the constant voltage exceeds the charge allowable voltage of the battery, and when the constant voltage exceeds the charge allowable voltage of the battery, supplying the constant voltage to the super capacitor. Power supply method. 7. The method of claim 6, wherein distributing the surplus power Determining whether the constant voltage corresponding to the surplus power exceeds the charge allowable voltage of the charging unit based on the magnitude of the constant voltage to which surplus power input from the driving motor is converted; Supplying the surplus power to the charging unit when it is determined whether the constant voltage exceeds the charging allowance voltage of the charging unit and the constant voltage corresponding to the surplus power does not exceed the charging allowance voltage of the charging unit; And As a result of determining whether the constant voltage exceeds the charging allowance voltage of the charging unit, when the constant voltage corresponding to the surplus power exceeds the charging allowance voltage of the charging unit, surplus power corresponding to the charging allowance voltage is supplied to the charging unit. And supplying a surplus electric power portion exceeding the charge allowable voltage to the resistor circuit unit. delete

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