KR20180076385A - Vehicle, and Power Distribution Apparatus and Method thereof - Google Patents

Abstract

According to the present invention, a vehicle includes: a first battery outputting power of a first voltage; a second battery outputting a power of a second voltage larger than the first voltage; an electrical component supplied with power from the second battery; and a power distribution device transferring power from the second battery to an electrical component. The power distribution device includes: a relay having a switch connected in series between the second battery and at least one of the electric component, and a coil operating the switch; and a semiconductor switch connected in parallel to the switch. The power distribution device may turn the transistor on before turning the relay on or off. The present invention is able to prevent the power distribution device from being damaged due to arc.

Description

VEHICLE, POWER DISTRIBUTION APPARATUS AND METHOD,

The disclosed invention relates to a vehicle, a power distribution apparatus, and a method, and more particularly, to a vehicular power distribution apparatus and method for preventing arcing from occurring in an arc when a voltage is applied from a high voltage battery.

Generally, a vehicle means a moving means or a transportation means that travels on a road or a line using fossil fuel, electricity, or the like as a power source.

The vehicle is equipped with various electrical components to protect the driver and provide the driver with convenience and fun. For example, vehicles are equipped with electric components that consume large amounts of power, such as a traveling assistance system and seat heating.

As a result, the consumption of the battery supplying power to the starter motor is increased, causing a problem that the starter is not started, or the life of the battery is shortened.

Today, vehicles developed today include hybrid electric vehicles (HEVs) that use both fossil fuels and electricity, and electric vehicles (EVs) that use electricity only.

Hybrid cars and electric cars have separate high-voltage batteries that power the motor that drives the vehicle and low-voltage batteries that power the vehicle's electrical components.

An aspect of the disclosed invention is to provide a vehicle, a power distribution device, and a method for preventing an arc generated when a voltage is applied from a high-voltage battery and thereby preventing damage to the device caused by an arc.

Also, an arc is generated when a voltage is applied from a high-voltage battery, and the distance between the contact points is increased in manufacturing a multi-contact type switch, thereby solving the problem of increasing the size of the relay.

Also, an arc is generated when a voltage is applied from a high-voltage battery, and a malfunction occurs in an electric device due to a magnetic field in a peripheral device when a magnet is used.

According to an aspect of the disclosed subject matter, a vehicle includes: a first battery that outputs power of a first voltage; A second battery for outputting power of a second voltage greater than the first voltage; At least one switch including at least one electrical component supplied with power from the second battery and connected in series between the second battery and the at least one electrical component; And a semiconductor switch connected in parallel to the switch, wherein the power distribution device may apply or cut off a voltage to a control signal input terminal of the semiconductor switch before applying or cutting off a current to the coil.

Wherein the power distribution device comprises: a communication unit for receiving an operation on / off input of the at least one electrical component of the user; A control unit for controlling a current applied to the coil and a voltage applied to a control signal input terminal of the semiconductor switch; And a switch unit including the coil, the switch, and the semiconductor switch.

Wherein the control unit applies a current to the coil after applying or cutting off a voltage to a control signal input terminal of the semiconductor switch when the user's ON input is received, The voltage can be cut off or applied to the signal input terminal.

When the user inputs an off input, the controller cuts off the current to the coil after applying or cutting off the voltage to the control signal input terminal of the semiconductor switch. After the current is cut off to the coil, The voltage can be cut off or applied to the input terminal of the control signal.

The at least one electric component may include a PTC heater and a blower.

The second battery can supply a power of 48 V voltage.

According to an aspect of the present invention, there is provided a power distribution apparatus for transferring power from a first battery to at least one electric component, the power distribution apparatus comprising: At least one switch connected to the switch; A coil for operating said switch; And a semiconductor switch in which a voltage is applied or cut off to a control signal input terminal before a current is applied to the coil.

A communication unit for receiving an operation on / off input of the at least one electric component of the user; A control unit for controlling a current applied to the coil and a voltage applied to the semiconductor switch; And a switch unit including the coil, the switch, and the semiconductor switch.

In addition, when the user's ON input is received, the controller applies a current to the coil after applying or cutting off a voltage to a control signal input terminal of the semiconductor switch, and after a current is applied to the coil, The voltage can be cut off or applied to the input terminal of the control signal.

When the user inputs an off signal, the controller turns off the current to the coil after applying or cutting off the voltage to the control signal input terminal of the semiconductor switch. After the current is cut off to the coil, The voltage can be cut off or applied to the control signal input terminal.

The power distribution device may deliver power from the first battery to a PTC heater or blower.

The power distribution device may deliver power from the battery supplying the 48V voltage to the at least one electrical component.

According to an aspect of the present invention, there is provided a power distribution method including a first battery outputting a first voltage, a second battery outputting a second voltage greater than a first voltage, and at least one electrical component, A method of controlling a vehicle that supplies power to at least one electric component from a second battery, the method comprising: receiving an operation on / off input of the at least one electric component of a user; And sequentially operating a coil for operating at least one switch connected in series between the second battery and the at least one electric component and a semiconductor switch connected in parallel to the switch.

Applying a current to the coil after applying or blocking a voltage to a control signal input terminal of the semiconductor switch when the user's ON input is received; And a step of interrupting or applying a voltage to a control signal input terminal of the semiconductor switch after a current is applied to the coil.

Blocking the current to the coil after a voltage is applied to or disconnected from a control signal input terminal of the semiconductor switch when the off input of the user is received; And a step of interrupting or applying a voltage to a control signal input terminal of the semiconductor switch after the current is cut off in the coil.

The at least one electric component may include a heater and a blower.

According to an aspect of the disclosed invention, an arc is generated when a voltage is applied from a high voltage battery, and breakage of the power distribution device caused by an arc can be prevented.

In addition, one aspect of the disclosed invention can reduce the size of the PCB.

In addition, when a voltage is applied from a high voltage battery, an arc is generated, and when a magnet is used, it is possible to solve a problem that a malfunction occurs in an electric device due to a magnetic field in a peripheral device.

1 shows a vehicle body of a vehicle according to an embodiment of the present invention.
2 shows a vehicle undercarriage according to an embodiment of the present invention.
Fig. 3 shows electrical components of a vehicle according to an embodiment of the present invention.
4 shows a block diagram comprising a vehicle power distribution device, a first battery, and a second battery according to an embodiment of the present invention.
5 is a block diagram illustrating an example of a power distribution apparatus according to an embodiment of the present invention.
6 shows an internal circuit diagram of a power distribution device according to an embodiment of the present invention.
7 is a graph for explaining driving in the power distribution apparatus according to an embodiment of the present invention.
8 is a flowchart illustrating an operation of the power distribution apparatus according to an embodiment of the present invention.

Like reference numerals refer to like elements throughout the specification. This specification does not describe all the elements of the embodiments, and duplicate descriptions of the contents or embodiments in the technical field to which the disclosed invention belongs are omitted. The term 'part, module, member, or block' used in the specification may be embodied in software or hardware, and a plurality of 'part, module, member, and block' may be embodied as one component, It is also possible that a single 'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only the case directly connected but also the case where the connection is indirectly connected, and the indirect connection includes connection through the wireless communication network do.

Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

Throughout the specification, when a member is located on another member, it includes not only when a member is in contact with another member but also when another member exists between the two members.

The terms first, second, etc. are used to distinguish one element from another, and the elements are not limited by the above-mentioned terms.

The singular forms " a " include plural referents unless the context clearly dictates otherwise.

In each step, the identification code is used for convenience of explanation, and the identification code does not describe the order of the steps, and each step may be performed differently from the stated order unless clearly specified in the context. have.

Hereinafter, the working principle and embodiments of the disclosed invention will be described with reference to the accompanying drawings.

The vehicle 1 is a mechanical / electric device for transporting people and / or objects using the rotational force of the internal combustion engine and / or the rotational force of the electric motor.

The vehicle 1 using the internal combustion engine can explosively burn fossil fuels such as gasoline, light oil and gas, convert the translational force generated during the combustion of the fossil fuel into rotational force, and move using the converted rotational force.

A vehicle 1 using an electric motor is called an electric vehicle (EV), and can convert electric energy stored in a battery into rotational kinetic energy, and can move using the converted rotational force.

There is also a vehicle 1 using an internal combustion engine and an electric motor. Such a vehicle 1 is called a hybrid electric vehicle (HEV) and can be moved not only by using an internal combustion engine but also by using an electric motor. A hybrid vehicle is a general hybrid vehicle that receives only fossil fuel from the outside and generates electric energy using internal combustion engines and electric motors (generators), and a plug-in hybrid vehicle -in Hybrid Electric Vehicle (PHEV).

Electric vehicles and hybrid vehicles generally include a battery for supplying electric energy to the drive motor and a battery for supplying electric energy to the electric device (electric field, electric device) of the vehicle 1, respectively. For example, a battery that supplies electrical energy to a drive motor may have an output voltage of approximately several hundred volts (V), and a battery that supplies electrical electrical energy to electrical components may have an output strategy of approximately tens of volts.

Further, the electric vehicle charges the battery for the drive motor from the external power source, and converts the voltage of the battery for the drive motor to charge the battery for the electric component. The hybrid vehicle also uses an internal combustion engine to charge the battery for the drive motor, and converts the voltage of the battery for the drive motor to charge the battery for the electric component.

Accordingly, the electric vehicle and the hybrid vehicle may include a DC-DC converter for converting a voltage of several hundreds of volts output from the battery for the drive motor to a voltage of several tens of volts for charging the battery for the electric component.

Hereinafter, the DC-DC converter included in the vehicle 1 and the vehicle 1 will be described in detail.

1 shows a vehicle body of a vehicle according to an embodiment. Fig. 2 shows a vehicle undercarriage according to one embodiment. Fig. 3 shows electrical components of a vehicle according to an embodiment. 4 also shows a block diagram including a vehicle power distribution device, a first battery and a second battery according to an embodiment.

1, 2, 3 and 4, a vehicle 1 includes a body 10 which forms an appearance of a vehicle 1 and accommodates a driver and / or a baggage, a body 10, A chassis 20 including other power generation devices, a power transmission device, a braking device, a steering device, a wheel, etc., and an electric component 30 that protects the driver and provides convenience to the driver.

As shown in Fig. 1, the vehicle body 20 forms an interior space in which the driver can stay, an internal combustion engine room for accommodating the internal combustion engine, and a trunk room for accommodating the cargo.

The vehicle body 20 includes a hood 21, a front fender 22, a roof panel 23, a door 24, a trunk lid 25, A quarter panel 26, and the like. A front window 27 is provided in front of the vehicle body 20 and a side window 28 is provided on a side surface of the vehicle body 20, A rear window 29 may be provided at the rear of the vehicle body 20.

2, the undercarriage 20 includes a power generation device 21, a power transmission device 22, a steering device (not shown) for driving the vehicle 1 under the control of the driver and / 23, a braking device 24, a wheel 25, and the like. The undercarriage 20 may further include a frame 26 for fixing the power generating device 21, the power transmitting device 22, the steering device 23, the braking device 24, and the wheel 25 .

The power generation device 21 generates a rotational force for driving the vehicle 1 and includes an internal combustion engine 21a, a fuel supply device, an exhaust device, an electric motor 21b, a first battery B1, a second battery B2 ), And the like.

The power transmitting device 22 transmits the rotational force generated by the power generating device 21 to the wheels 25 and may include a clutch / transmission 22a, a shift lever, a differential device, a drive shaft 22b, .

The steering device 23 controls the running direction of the vehicle 1 and may include a steering wheel 23a, a steering gear 23b, a steering link 23c, and the like.

The braking device 24 stops the rotation of the wheel 25 and may include a brake pedal, a master cylinder, a brake disk 24a, a brake pad 24b, and the like.

The wheel 25 receives rotational force from the power generating device 21 through the power transmitting device 22 and can move the vehicle 1. [ The wheel 25 may include a front wheel provided at the front of the vehicle and a rear wheel provided at the rear of the vehicle.

The vehicle 1 may include various electrical components 30 for the safety and comfort of the driver and passenger, as well as the control of the vehicle 1, as well as the mechanical components described above.

3, the vehicle 1 includes an engine management system (EMS) 31, a transmission control unit (TCU) 32, an electronic braking system (EBS) 33, an electric power steering (EPS) 34, a body control module (BCM) 35, an audio device 36, an air conditioner a main battery sensor 38, a secondary battery sensor 39 and a power distribution device 100. The power distribution device 100 may include a heating / ventilation / air conditioning (HVAC) Also, a main battery B1 and an auxiliary battery B2 for supplying electric power to the electric components 30 may be provided.

The engine management system 31 can control the operation of the engine and manage the engine in response to the driver's acceleration command through the accelerator pedal. For example, the engine management system 31 can perform engine torque control, fuel consumption control, engine failure diagnosis, and the like.

The transmission control unit 32 can control the operation of the transmission in response to the shift command of the driver through the shift lever or the running speed of the vehicle 1. [ For example, the transmission control unit 32 can perform shift control, clutch control, engine torque control during shifting, and the like.

The electronic braking system 33 can control the braking device of the vehicle 1 and maintain the balance of the vehicle 1 in response to the driver's braking command through the braking pedal. For example, the electronic braking system 33 may include an anti-lock brake system (ABS) and an electric stability control (ESC).

The electric steering system 34 can assist the driver to easily operate the steering wheel by the driver. For example, the electric power steering apparatus 34 may assist the user in steering operations such as reducing the steering force at low-speed driving or parking, and increasing the steering force at high-speed driving.

The vehicle body control module 35 can control the operation of electrical components that provide convenience to the driver or ensure the safety of the driver. For example, the vehicle body control module 35 can control a door lock device, a head lamp, a wiper, a power seat, a seat heater, a cluster, a room lamp, a navigation device, and a multifunctional switch installed in the vehicle 1.

The first battery B1 and the second battery B2 can store electric energy generated from the rotational force of the engine and supply electric power to various electric components 30 included in the vehicle 1. [

For example, during running of the vehicle 1, the generator may convert the rotational energy of the engine into electric energy, and the first battery B1 and the second battery B2 may receive and store electric energy from the generator . At this time, the first battery B1 can supply a larger electric power than the second battery B2.

The first battery B2 supplies electric power to a predetermined electronic device in the vehicle 1 and supplies power for starting the engine to the starter motor for driving the vehicle 1 in the case of the second battery B2 Can supply.

The first battery sensor 38 and the second battery sensor 39 can acquire various information related to the first battery B1 and the second battery B2, respectively. For example, the first and second battery sensors 38 and 39 may be configured to measure the rated capacity of the first and second batteries B1 and B2, the state of charge of the first and second batteries B1 and B2, (SoH) of the first and second batteries B1 and B2, the output voltages of the first and second batteries B1 and B2 and the first and second batteries B1 and B2 And the battery state information such as the temperature of the first and second batteries B1 and B2.

The power distribution device 100 can distribute the electric energy of the first battery B1 and / or the second battery B2 to each of the electric components 30 of the vehicle 1. [ The power distribution apparatus 100 includes a first power distribution device 101 for distributing the electric energy of the first battery B1 internally to the electric components of the vehicle 1, And a second power distribution device 102 for distributing the energy to the electric components of the vehicle 1. [

For example, the power distribution apparatus 100 may allow supply of electrical energy from the first battery B1 and / or the second battery B2 to each of the electrical components 30, The supply of electric energy can be cut off.

For example, the power distribution apparatus 100 receives information on the running state of the vehicle 1 from the engine management system 31, the transmission control unit 32, and the like, and controls the first battery sensor 38 and / 2 can receive information on the status of the first battery B1 and / or the second battery B2 from the battery sensor 39. [ The electric power distribution apparatus 100 further includes a power distributing unit 100 for distributing the electric energy to each of the electric components 30 based on the traveling information of the vehicle 1 and the state information of the first battery B1 and / The supply can be controlled.

In addition, the vehicle 1 may further include electrical components for protecting the driver and providing comfort to the driver. For example, the vehicle 1 may include electrical components 30 such as door locks, headlamps, wipers, power seats, seat heaters, clusters, room lamps, navigation, multifunction switches,

These electrical components 30 can communicate with each other through the vehicle communication network NT. For example, the electrical components 30 may be implemented as Ethernet, MOST (Media Oriented Systems Transport), Flexray, CAN (Controller Area Network), LIN Data can be exchanged through the network.

The electrical components 30 can be supplied with electric power from the first battery B1 and / or the second battery B2. As described above, the first battery B1 and the second battery B2 can supply electric power to the electric components 30 during driving of the vehicle 1 or during parking.

4 is a block diagram for explaining that electric power is supplied from the first battery B1 and the second battery B2 to the lower ends of various electronic apparatuses included in the vehicle.

First, the second battery B2 is a starter battery, for example, a first load, a second load, or the like driven by a power source output from a second battery B2 connected to a starter as a 12V battery. At this time, the first load, the second load, and the like, which are driven by the power source output from the second battery B2, are arbitrarily referred to as the low voltage negative terminal. At this time, the second power distribution device 102 controls the power supplied to the lower voltage terminal including the plurality of component groups such as the third electric component group 30c or the fourth electric component group 30d.

Next, the first power distribution device 101 receives data from a generator (MHSG: Mild Hybrid Start Generator) and a first battery B1 to drive the generator MHSG and drives the first battery B1 , The first electric component group 30a and the second electric component group 30b driven by the power outputted from the generator MHSG and supplies the generated voltage to the set voltage To-DC converter 105 that converts the input signal to a digital signal.

Specifically, the generator (MHSG) generates the voltage set by the control of the power distribution apparatus 100, and the generated voltage of the generator (MHSG) charges the first battery (B1).

The various loads at the lower end of the high voltage section are devices of an electric automobile and / or a hybrid automobile (for example, a blower, a heater, etc.) driven by a power source (for example, 48V) output from the first battery B1 And various devices at the lower end of the high voltage section will be described later with reference to FIG.

Therefore, the vehicle can be operated by supplying electric power to the various loads from the first battery B1 and the second battery B2.

The DC-DC converter 105 may convert the first voltage output from the first battery B1 to the second voltage of the second battery B2. The electric energy of the second voltage converted by the DC-DC converter 105 may be stored in the second battery B2.

4, the DC-DC converter 105 includes a first battery B1 that outputs a first voltage V1, a second battery B2 that outputs a second voltage V2, And the DC-DC converter 105 may receive the first voltage V1 and output the second voltage V2. For example, the DC-DC converter 105 may convert the DC 48V voltage generated in the generator (MHSG) to DC 12V and output it to the first battery. At this time, the first battery B1 can be charged to the power generation voltage of 48 V output from the generator MHSG without passing through the DC-DC converter 105. [

Accordingly, the first battery B1 according to one embodiment can be configured as a battery pack assembled with a lithium ion battery, and supplies power to the lower voltage end of the 48V power supply. Here, the first battery B1 is charged with the voltage developed in the generator MHSG. To this end, the first battery B1 is operable by the first power distribution device 101 for controlling the charging voltage and distributing the power to at least one or more subsidiary ends included in the lower voltage terminal.

In the foregoing, various electronic devices 30 included in a vehicle and a power distribution device 100 for supplying power to various electronic devices have been described.

Hereinafter, the internal configuration of the first power distribution device 101 that supplies power from the first battery B1 in the power distribution device 100 to the lower end of the high voltage part, and the circuit configuration diagram of the first power distribution device 101 Take a closer look.

5 is a block diagram illustrating an example of a first power distribution device 101 in a power distribution device 100 according to the present invention. FIG. 6 is a block diagram of a first power distribution device 101 according to an embodiment. Is an internal circuit diagram.

5, the first power distribution device 101 according to the present invention includes a first communication unit 102, a first control unit 103, and a first switch unit 104.

5, the second power distributing apparatus 102 for supplying power from the second battery B2 to the lower voltage terminal has the same internal structure as the second power distributing apparatus 101, A control unit, and a second switch unit.

The first communication unit 102 includes a CAN transceiver that receives a communication signal from the electrical components 30 through the vehicle communication network NT and transmits a communication signal to the electrical components 30, And a communication controller for controlling the operation of the transceiver.

The CAN transceiver can receive communication data from the electrical components 30 via the vehicle communication network NT and output the communication data to the first control unit 103 and receive communication data from the first control unit 103 , The communication data can be transmitted to the electric component 30 through the vehicle communication network (CNT). For example, the can transceiver can receive battery status information from the first battery sensor 38 and / or travel information of the vehicle 1 from the engine management system 31 / transmission control unit 32 via the vehicle communication network NT, Lt; / RTI > The can transceiver can also send a power generation control request to the engine management system 31 via the vehicle communication network NT.

The first communication unit 102 can transmit and receive data to and from the electric components 30 of the vehicle 1 via the vehicle communication network NT and the first power distribution unit 100, The controller 101 can communicate with the electric components 30 such as the engine management system 31 and the battery sensor 38 through the first communication unit 102. [

The first switch unit 104 may include a plurality of switches 331 and 332 that can allow or block power supply to the electric component 30 of the vehicle 1 under the control of the first control unit 103. For example, the first switch 331 may allow or block the power supply to the first electrical component group 30a. Also, the second switch 332 can allow or block power supply to the second electrical component group 30b.

 At this time, the first electrical component parts group 30a to the second electrical component parts group 30b are not limited to only two electrical component parts groups, and depending on the vehicle, at least one or more various electrical component parts belonging to the lower end of the high- .

Thus, for example, the first electrical component part group 30a may include a PTC heater or the like, and the second electrical component group 30b may include a blower motor or the like.

At this time, each of the plurality of switches 331 and 332 included in the first switch unit 104 can be explained through the circuit diagram shown in Fig.

6, the first switch 331 connected between the first battery B1 and the first electrical component group 30a, the first battery B1 and the second electrical component group 30b ) Are connected in parallel.

Specifically, the first switch 331 internally includes a first fuse F1 placed in contact with the first battery B1, and a series connection is made between the first fuse F1 and the first electrical component group 30a in series The first power switch S1 may be connected.

The first coil L1 receiving the control signal from the first control unit 103 is connected in parallel with the first power switch S1.

In this case, in order to prevent the first power switch S1 from being damaged due to the application of the high voltage from the first battery B1, the semiconductor switch (the first MOSFET) located in parallel with the first power switch S1, 1 fuse F1 and the first electrical component group 30a.

In particular, the semiconductor switch includes a control signal input terminal and a current output terminal. Specifically, the control signal input terminal represents the gate (G) terminal of the transistor, and the current output terminal represents the source (S) terminal and the drain (D) terminal of the transistor.

At this time, as shown in the embodiment of the present invention, the transistor may be a MOSFET, but the present invention is not limited thereto, and a BJT (Bipolar Junction Transistor) or the like may be used.

However, the embodiment according to the present invention will be described as a MOSFET as a matter of convenience.

4, the gate terminal (G terminal) of the first MOSFET can receive a voltage from the first controller 103 according to a control signal.

Similarly, the second switch 332 internally includes a second fuse F2 placed in contact with the first battery B1, and a second fuse F2 connected in series between the second fuse F2 and the second electrical component group 30b A second power switch S2 may be connected.

The second coil L2 receiving the control signal from the first control unit 103 is connected in parallel with the second power switch S1.

In this case, in order to prevent the second power switch S2 from being damaged due to the application of a high voltage from the first battery B1, a second MOSFET located in parallel with the second power switch S2 is turned on, And is located between the fuse F2 and the second electrical component group 30b.

At this time, the gate terminal (G terminal) of the second MOSFET can receive a voltage from the first controller 103 in accordance with a control signal.

The first control unit 103 controls the first control unit 103 such that the power supply to the first electric component group 30a or the second electric component group 30b such as the running state of the vehicle 1, the heater, the blower, The plurality of switches 331 and 332 can be turned on or off. The first control unit 103 may turn on or off the plurality of switches 331 and 332 to allow or block the power supply in response to the power cutoff command or the power supply command received via the first communication unit 102 have.

The first control unit 103 may include a memory for storing a program and data for controlling the first power distribution device 101, and a processor for processing data stored in the memory. Further, although not shown, the first control unit 103 further includes a gate driver for applying a voltage to a gate terminal of a plurality of MOSFETs included in the first switch unit 104. [

The configuration of the first power distribution device 101 has been described above.

Hereinafter, the operation of the switch in the first power distribution device 101 will be described.

Specifically, the first power distributing apparatus 101 is operated in accordance with the first switch 331 and the second switch as shown in FIGS. 7 and 8 in order to distribute the voltage to the lower voltage terminal. FIG. 7 is a graph showing the on / off operation of the MOSFET and the time point when the coil current is applied in order to illustrate driving in the power distribution device according to an embodiment. FIG. Fig. 3 is a flowchart for explaining the operation of the power distributing device according to the first embodiment.

For example, when the user turns on the load belonging to the first electric component group 30a, the first power distribution device in the power distribution device 100 according to the present invention operates.

As shown in FIG. 7, the first controller 103 applies (or blocks) the voltage to the gate terminal (G terminal) of the first MOSFET at t1 [sec]. Therefore, the voltage from the first battery B1 is bypassed from the D (Drain) terminal to the S (Source) terminal.

The first control unit 103 operates the first switch by applying current to the coil at time t2 [sec] after the voltage is bypassed.

When the first switch is operated and a voltage is supplied to the first electrical component group 30a, the first controller 103 disconnects (or applies) the gate voltage of the first MOSFET at t3 [sec]. Thus, the voltage from the first battery B1 is bypassed from the D-stage to the S-stage by bypassing the voltage.

Similarly, when the user turns off the load belonging to the first electric component group 30a, the first power distribution device in the power distribution device 100 according to the present invention operates.

As shown in FIG. 7, the first controller 103 applies (or disconnects) the voltage to the gate terminal (G terminal) of the first MOSFET at t4 [sec]. Therefore, the voltage from the first battery B1 is bypassed from the D (Drain) terminal to the S (Source) terminal.

The first control unit 103 operates the first switch by interrupting the current to the coil at t5 [sec] after the voltage is bypassed.

When the first switch is operated to cut off the voltage to the first electrical component group 30a, the first control unit 103 cuts off (or applies) the gate voltage of the first MOSFET at t6 [sec]. Therefore, the voltage from the first battery B1 is bypassed (or applied) to the S-stage from the D-stage.

For example, when the power distributing apparatus 100 according to the present invention is activated (S100), power can be supplied to the lower voltage terminal including the first electrical component group 30a and the second electrical component group 30b.

Specifically, when the input of the user for operating the load belonging to the lower end of the high voltage section is received (S200), the first power distribution device 101 operates the first switch section to turn on / off the operation of the load. Specifically, assuming that the first switch belonging to the first switch unit is in the first electrical component group 30a inputted by the user, the first control unit 103 controls the first switch 104, A voltage is applied (or cut off) to the gate terminal (G1 terminal) (S300). Therefore, the voltage from the first battery B1 is bypassed from the D1 (drain) terminal to the S1 (Source) terminal (S400).

When the voltage from the first battery B1 is bypassed from the drain (D1) to the source (S1) of the source and the current is applied to the lower end (S400), the first control unit 103 After the voltage is bypassed, a current is applied to the coil to operate the first switch S01 (S500, S600).

Accordingly, when the first switch S01 is operated and a voltage is supplied to the first electrical component group 30a, the first control unit 103 disconnects (or applies) the gate voltage of the first MOSFET (S700). Thus, the voltage from the first battery B1 is bypassed from the D-stage to the S-stage by bypassing the voltage.

The embodiments disclosed with reference to the accompanying drawings have been described above. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. The disclosed embodiments are illustrative and should not be construed as limiting.

105: DC-DC converter
100: power distribution device
101: first power distribution device
102: second power distributing device

Claims (16)

A first battery for outputting power of a first voltage;
A second battery for outputting power of a second voltage greater than the first voltage;
An electrical component supplied with power from the second battery;
And a power distribution device for transferring power from the second battery to the electrical component,
The power distribution device comprising: a relay having a switch connected in series between the second battery and the electric component, and a coil for operating the switch; And
And a power distribution device including a semiconductor switch connected in parallel to the switch,
Wherein the power distribution device turns on the semiconductor switch before turning the relay on or off. The method according to claim 1,
The power distribution device
A communication unit for receiving an operation turn-on / turn-off input of the electric component from a user;
A current applied to the coil, and a voltage applied to the semiconductor switch. 3. The method of claim 2,
The control unit
When the user's turn-on input is received,
Applying or cutting off a voltage to a control signal input terminal of the semiconductor switch, applying a current to the coil,
And a voltage is interrupted or applied to a control signal input terminal of the semiconductor switch after a current is applied to the coil. 3. The method of claim 2,
The control unit
When the user's turn-off input is received,
After applying or cutting off a voltage to a control signal input terminal of the semiconductor switch,
And a voltage is interrupted or applied to a control signal input terminal of the semiconductor switch after the current is cut off to the coil. The method according to claim 1,
Wherein the electric component includes a PTC heater and a blower. The method according to claim 1,
And the second battery supplies a power of 48 V voltage. 1. A power distribution device for transferring power from a first battery to an electrical component, comprising:
The power distribution device
A relay having a coil for driving a switch connected in series between the first battery and the electrical component;
And
A semiconductor switch connected in parallel to said relay turned on before said relay is turned on or off; Comprising a power distribution device. 8. The method of claim 7,
A communication unit for receiving an operation turn-on / turn-off input of the electric component of the user; And
A control unit for controlling a current applied to the coil and a voltage applied to the semiconductor switch; Further comprising: 9. The method of claim 8,
The control unit
When the user's turn-on input is received,
Applying or cutting off a voltage to a control signal input terminal of the semiconductor switch, applying a current to the coil,
And applies a voltage to the control signal input terminal of the semiconductor switch after the current is applied to the coil. 9. The method of claim 8,
The control unit
When the off input of the user is received,
After applying or cutting off a voltage to a control signal input terminal of the semiconductor switch,
Wherein the voltage is interrupted or applied to the control signal input terminal of the semiconductor switch after the current is cut off in the coil. 8. The method of claim 7,
Wherein the power distribution device transfers power from the first battery to a PTC heater or blower. 8. The method of claim 7,
Wherein the power distribution device transfers power from the battery supplying the 48V voltage to the at least one electrical component. A first battery for outputting electric power of a first voltage and a second battery for outputting electric power of a second voltage higher than the first voltage and an electrical component, In the control method,
Receiving an operation turn-on / turn-off input of the at least one electrical component of the user;
And a semiconductor switch connected in parallel to the relay, wherein the relay comprises a coil for operating a switch connected in series between the second battery and the electrical component. 14. The method of claim 13,
When the user's ON input is received,
Applying a current to the coil after applying or cutting off a voltage to a control signal input terminal of the semiconductor switch; And
And a step of blocking or applying a voltage to a control signal input terminal of the semiconductor switch after a current is applied to the coil. 14. The method of claim 13,
When the off input of the user is received,
Blocking the current to the coil after a voltage is applied to or disconnected from a control signal input terminal of the semiconductor switch; And
And blocking or applying a voltage to a control signal input terminal of the semiconductor switch after the current is cut off to the coil. 14. The method of claim 13,
Wherein the at least one electrical component comprises a heater and a blower.

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