KR101786370B1 - System for using solar cell in vehicle and control method thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell utilization system for a vehicle and a control method thereof. More particularly, the present invention relates to a solar cell utilization system, The present invention provides a system and a control method thereof capable of supplying stable solar cell power in a vehicle in consideration of a difference in power generation characteristics of each battery. To this end, a plurality of solar cells, each installed at a predetermined position of the vehicle; A state detection unit for detecting an output state of each of the solar cells; A control unit for outputting a control signal for controlling switching between direct and parallel connections between solar cells based on output states of the respective solar cells detected through the state detection unit; A switching switching unit for connecting all the solar cells or selected ones of the solar cells to each other in series or in parallel with respect to the power conversion unit according to a control signal output from the control unit; And a power conversion unit for adjusting an output of the solar cell transmitted through the switching switching unit and outputting the output to a battery or an electric load of the vehicle, and a control method thereof.

Description

Technical Field [0001] The present invention relates to a solar cell utilizing system and a control method thereof,

The present invention relates to a solar cell utilization system of a vehicle and a control method thereof, and more particularly, to a solar cell utilization system of a vehicle in which a solar cell is installed at various positions of a vehicle, The present invention relates to a system capable of supplying stable solar cell power in a vehicle, and a control method thereof, in consideration of a difference in power generation characteristics of each solar cell.

Solar cells are photovoltaic devices that convert solar energy into electrical energy.

Conventionally, monocrystalline or polycrystalline silicon solar cells have been widely used as solar cells, but silicon solar cells are not only used in large-sized high-priced equipment at the time of manufacturing, but also have a high production cost due to high price of raw materials, There is also a limit to improving the efficiency of the system, and new alternatives have been sought.

As an alternative to silicon solar cells, there is an increasing interest in solar cells using organic materials that can be manufactured at low cost. Dye-sensitized solar cells, which have very low manufacturing costs, are attracting much attention.

The dye-sensitized solar cell can be manufactured as a transparent electrode, can be applied to various colors and designs, and has a semi-transparent characteristic, that is, a visual advantage that the inside and the outside can be seen in a translucent manner. There is an advantage in the field where transparency is required.

Unlike other energy sources, solar cells are infinite and eco-friendly, so their importance is increasing with time, and the field of application is becoming wider.

In response to this trend, the automobile industry is also developing and introducing vehicles equipped with solar cells and a system that utilizes the electric energy output from the solar cells.

For example, a technique has been developed in which a solar panel mounted on a vehicle body (such as a body roof panel or a sunroof / panorama loop) is used to power a solar cell.

When solar cells are applied to a sunroof or panoramic loop, there is an advantage that solar energy can be utilized in various applications while maintaining the open feeling of the sunroof and panoramic loop.

In addition, a solar cell applied to a roof panel, a sunroof, or a panoramic loop can also be useful as a power source for a parking vehicle. For example, a ventilation blower is operated by generating power of a solar cell during parking Lt; / RTI >

Prior art documents that use a solar cell as a power source by mounting a solar cell on a vehicle include U.S. Patent Application Publication No. 2009-0314556, U.S. Patent No. 6476315, U.S. Patent Application No. 2013-107554, U.S. Patent Application Publication No. 2000-180253 .

On the other hand, when the solar cell is installed in various places in the vehicle, the output power may be lowered in some solar cells due to environmental factors such as the amount of light according to the position and the light incidence angle in the solar cell (light irradiation angle with respect to the solar cell).

In addition, when all the solar cells installed in the vehicle are connected in series, the output of the entire solar cell is lowered when the output of the solar cell is lowered.

In order to maximize the power generation efficiency of the vehicle solar cell system, it is desirable that the direct sunlight of the sun is uniformly incident on all the solar cells. However, due to the location of the solar cell in the vehicle, the installation angle of the solar cell, Shadows (shadows) can appear on some or all of them.

In addition, even in a single solar cell, when sunlight is shaded in some of the cells and shadows are generated, the current in the corresponding cell is reduced and the generated power (output) of the corresponding solar cell is lowered. At this time, The power loss of the entire solar cell may occur.

The development of solar cell vehicle application technology and vehicle solar cell system shows that solar cells can be used in various positions such as hood (bonnet), door, trunk lid and rear spoiler as well as roof And it is being studied to install them.

However, there is a difference in the amount of light and angle of light irradiation for each solar cell depending on the installation location, and the difference in power generation characteristics is shown. When solar cells are installed at various positions, solar cells are shielded from some solar cells, The output of some solar cells may deteriorate due to a difference in light amount and solar irradiation angle depending on the installation position and the output of the solar cell may be deteriorated when one solar cell is covered with sunlight in some of the cells .

However, there is no system or technology capable of supplying stabilized solar cell generation power in the vehicle in consideration of the difference in the power generation characteristics of each solar cell in the vehicle.

Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a solar battery module, a solar battery module, a solar battery module, The present invention provides a system capable of supplying stable solar cell power in a vehicle in consideration of a difference in power generation characteristics of each cell and a control method thereof.

In order to achieve the above object, according to the present invention, there is provided a solar battery comprising: a plurality of solar cells provided at respective predetermined positions of a vehicle; A state detection unit for detecting an output state of each of the solar cells; A control unit for outputting a control signal for controlling switching between direct and parallel connections between solar cells based on output states of the respective solar cells detected through the state detection unit; A switching switching unit for connecting all the solar cells or selected ones of the solar cells to each other in series or in parallel with respect to the power conversion unit according to a control signal output from the control unit; And a power conversion unit that adjusts an output of the solar cell transmitted through the switching switching unit and outputs the output to a battery or an electric load of the vehicle.

A state in which the output state of each solar cell is detected by the state detection unit for a plurality of solar cells installed at predetermined positions of the vehicle; Determining whether to connect the solar cells to each other in series or parallel to the power conversion unit based on the output state of each solar cell detected by the state detection unit; Controlling the driving of the switching switching unit according to a result determined based on an output state of each of the solar cells, thereby connecting all solar cells or selected solar cells in series or in parallel; And controlling the driving of the power conversion unit to adjust the output of the solar cell transmitted through the switching switching unit through the power conversion unit to be output to a battery or an electric load of the vehicle. .

According to the solar cell utilization system and the control method of the vehicle according to the present invention, the maximum solar cell output can be ensured by utilizing the dual DC-DC converter using solar cells installed in various parts of the vehicle, It is possible to charge the battery or operate an electric load such as a parking ventilation system, thereby maximizing the effect of improving fuel efficiency of the vehicle.

In particular, by monitoring the power generation status of each solar cell, the solar cells in the normal output range can be connected in series to output the generated power in the serial connection state, and the solar cells in the abnormal output state can be connected in parallel The output of the solar cell can be supplied to the vehicle at any time by minimizing the influence on the output of other solar cells.

1 is a view illustrating an output state of a solar cell according to an installed position.
2 is a circuit diagram schematically showing a solar cell utilization system of a vehicle according to an embodiment of the present invention.
3 and 4 are block diagrams showing a configuration of a solar cell utilization system according to an embodiment of the present invention.
5 is a flowchart showing a control method of a solar cell utilization system according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms.

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

For better understanding of the present invention, the power generation characteristics of each solar cell when the solar cell is installed at various positions of the vehicle will be described in more detail.

For example, if a solar cell is installed in five places of a roof, a hood, a driver's door, a front passenger door, and a trunk lid of a vehicle, a plurality of solar cells may be applied to the vehicle. A difference may occur, which may cause a difference in the power generation characteristics of each solar cell.

Referring to FIG. 1, when a solar cell having the same output capacity (for example, 25 W) is installed in a roof, a hood, a driver's seat door, a passenger door, and a trunk lid, , The difference in the light quantity and the irradiation angle of each solar cell occurs depending on the installation position, and the output is different for each solar cell.

Particularly, in some solar cells, solar cells are shaded in some cells, and shadows are generated, which indicates that the power output is suddenly decreased.

In addition, when comparing the solar cell installed in the driver's door and the passenger's door, the solar cell of the driver's door has low output and the solar cell of the passenger's door has high output. It is becoming a low-power situation.

When the solar cell is installed at various positions of the vehicle, the difference in the output voltage and the current is different depending on the installation position of the solar cell and various factors such as the light amount, the irradiation angle, appear.

When the plurality of solar cells are connected in series, a current loss occurs when the output of some solar cells is lowered, and a voltage loss occurs when all the solar cells are connected in parallel.

In addition, in order to overcome the problem caused by the difference in output of each solar cell in a solar cell utilizing system having a plurality of solar cells, a power conversion apparatus (DC-DC converter) is connected to an MPPT controller (Maximum Power Point Tracking Controller) This can result in a high cost of configuring the system.

Therefore, when the solar cells are installed at various positions of the vehicle, it is necessary to monitor the power generation state of each solar cell, that is, the output state, and selectively connect the solar cells in series or in parallel according to the power generation state.

Accordingly, the present invention solves the problem of the final output drop of the entire solar cell due to the difference in output of each solar cell at each position, and provides a system capable of supplying more stable solar cell power in the vehicle and a control method thereof do.

FIG. 2 is a circuit configuration diagram schematically showing a solar cell utilization system of a vehicle according to an embodiment of the present invention, and FIGS. 3 and 4 are block diagrams showing a configuration of a solar cell utilization system according to an embodiment of the present invention .

FIG. 3 shows the path of the power flow generated in the solar cell together with the configuration of the system, and FIG. 4 shows the path of the sensor signal and the control signal along with the configuration of the system.

The present invention relates to an implementation of an inter-solar cell connection structure capable of exhibiting a maximum output through switching control on the electrode portions of the solar cells 1 to N mounted at respective positions of the vehicle, that is, the (+) and (- The main feature is that the control can be done.

According to the present invention, it is not necessary to install a power converter (DC-DC converter) for each of the individual solar cells 1 to N, a stable system output can be ensured only by a simple configuration and a component addition, .

In addition, in the present invention, the output state of each solar cell (1 to N) is monitored to control the direct / parallel connection structure between solar cells through switching control considering the power generation state of the solar cell.

That is, it is possible to secure a desired current and voltage output while changing the serial / parallel connection structure between the solar cells mounted on the vehicle through the above-described switching control according to the state of power generation of each solar cell.

In addition, the maximum output of the system obtained through the above-described direct / parallel switching control is supplied to the battery 130 so that the battery is charged. In addition, the electric power load 141- .

2 to 4, a solar cell utilizing system according to an embodiment of the present invention includes solar cells 1 to N, status detection units 11 to 13, a control unit 100, a switching switching unit 110, A conversion unit 120, a battery 130, and electric loads 141 to M.

First, a solar cell utilization system according to an embodiment of the present invention includes a plurality of solar cells 1 to N installed at various positions of a vehicle, wherein the solar cells are installed in various places of the vehicle body, for example, , Door (driver's door, front passenger's door, front door), trunk lid, spoiler (rear spoiler, etc.).

In addition, each of the solar cells 1 to N may be a solar PV (Photovoltaic Panel) composed of a plurality of cells that convert solar energy into electric energy.

As described above, each solar cell may be a known photoelectric conversion device installed at various positions in the vehicle and outputting the generated power through the respective electrode portions, that is, the (+) and (-) poles.

2 shows only a solar cell panel in which an output circuit is connected to the (+) and (-) electrodes, which are electrode parts, as the solar cells 1 to N. However, May include circuit elements that are not shown, which must be provided for each individual panel in order to allow external output.

For example, it may include known elements such as a diode, an MPPT controller, and a DC-DC control unit (DC-DC converter) that adjusts the solar cell voltage output according to the MPPT algorithm.

As shown in FIG. 3, the solar cell utilization system according to the embodiment of the present invention includes a state detection unit for detecting the power generation state of each solar cell, which is installed for each of the solar cells 1 to N, And sensors 11 to 13 for detecting the generated current and voltage output from the battery.

The control unit 100 generates control signals for controlling the direct and parallel connection between the solar cells 1 to N based on the information detected through the state detectors 11 to 13, .

The switching switching unit 110 switches between the (+) and (-) poles of the solar cells 1 to N and the (+) and (- A plurality of switches which are provided on an output circuit between the input terminal of the controller 120 and the on / off driving is controlled according to a control signal of the controller 100 may be combined.

Here, the switch may be a circuit switch relay switch or a semiconductor switch which is turned on / off according to an external electrical signal.

The switching switching unit 100 is provided on an output circuit connected to (+) and (-) of each solar cell, and switches the plurality of switches whose on / off driving is controlled in accordance with a control signal of the control unit 100 The solar cells 1 to N or the entire solar cells can be connected to one another in series or in parallel with respect to the power conversion unit 120.

At this time, the solar cells connected in series and the solar cells connected in parallel are selected and connected to each other in accordance with the ON or OFF control state of the selected switch.

In FIG. 2, the arrangement, arrangement, and combination of the switches constituting the switching switching unit 110 represent one example for conceptually showing that selected solar cells are connected in series or in parallel by a switch. But is not limited thereto.

It is possible to adopt one of the known types of switching circuits so that the number of solar cells can be considered in consideration of the number of solar cells, It is possible to constitute a circuit of the circuit 110.

Meanwhile, the power conversion unit 120 finally adjusts the output of the solar cell transmitted through the switching unit 110 and outputs the final output.

To this end, a first power conversion device, that is, a series DC-DC converter 122 for converting the power of solar cells connected in series to the power of a set voltage and outputting the power, And a second DC / DC converter 124 for parallel conversion.

As described above, the dual DC-DC converter system using the DC-DC converter 122 for serial and the DC-DC converter 124 for parallel is applied in the present invention.

In addition, in the solar cell utilizing system using the dual DC-DC converter as described above, the driving of each of the converters 122 and 124 is controlled according to the control signal of the controller 100, and the power of each converter 122, The input terminal may be provided with variable resistance circuit parts 121 and 123 whose resistance values vary according to the control signal of the controller 100.

A battery 130 mounted on a vehicle and various electric loads 141 to M used in a vehicle are connected to an output terminal of the power conversion unit 120 through a power supply circuit, A circuit opening / closing switch 129 is provided.

Here, the electric loads 141 to M may be various electric loads mounted on the vehicle, an air conditioner including a parking ventilation system, various electric devices connected to the vehicle, and the like.

The parking ventilation system is an apparatus that operates to perform in-vehicle ventilation during parking, and may include an air conditioning blower as an electric load supplied with power from the solar cells 1 to N.

The battery 130 and the in-vehicle electric loads 141 to M are connected to the solar cell power controller including the switching switching unit 110 and the power conversion unit 120, The operating power will be distributed.

FIG. 5 is a flowchart illustrating a control process of the solar cell utilizing system according to the embodiment of the present invention. Referring to FIG. 5, a method of controlling the solar cell utilizing system according to the embodiment will be described below.

5, R _v is a solar cell power generation state value at a voltage output obtained for each of the solar cells 1 to N, and is the maximum power of the solar cell with respect to the basic output voltage value, (%) Of the voltage value (Vmax) at the point.

Further, R _I is a solar cell power generation state value at the current output obtained for each solar cell, and the current value at the maximum power point of the solar cell with respect to the basic output current value, which is an eigenvalue determined for each solar cell Imax) of the surface of the substrate.

Wherein R _v and R _I are values that depend on the current power generation state of the solar cell, the basic output voltage value may be a solar cell output voltage value (V _ST ) according to IEC 61646 measurement standard, IEC 61646 measurement solar cell output current value (I _ST ) (R _V = _V max / V _ST , R _I = _I max / I _ST ).

According to IEC 61646, the basic output value of the solar cell, that is, the basic output voltage value (V _ST ) and the basic output current value (I _ST ), is set to be 1sun (1000W / .

During the operation of the solar cell, R _V and R _I are compared with the respective serial-parallel voltage reference values (%) and the serial-parallel current reference values (%) in the control process as described later, It is also compared with the current reference value (%).

Here, the series-parallel voltage reference value (%) and the serial-parallel current reference value (%) may be different (e.g., 80%) from each other.

The series-parallel voltage reference value (%) and the series-parallel current reference value (%) are determined in advance for each of the solar cells 1 to N, As with the AN, all of the solar cells may have different values or some of them may be different values, or both may be the same value (e.g., 80%).

Also, as shown in the figure, the series-parallel current reference value for each solar cell may be different or different from each other, such as B1, B2, B3, and BN, .

In addition, the cut-off voltage reference value C (%) and the cut-off current reference value D (%) may be different from each other (e.g., 70%).

The cut-off voltage reference value C (%) and the cut-off current reference value D (%) are determined for each solar cell. The cut-off voltage reference value C for each solar cell may be a different value, Or all of the same values as shown (e.g., C = 70%).

In addition, the blocking current reference value D for each solar cell may be all or partly different values, or may be all the same value (e.g., D = 70%) as shown.

Hereinafter, the control process will be described in order with reference to FIG.

First, the power generation of each of the solar cells 1 to N is performed. At this time, control according to the maximum power point tracking algorithm is performed for each solar cell, that is, MPPT control is performed.

The control unit 100 monitors the voltage value Vmax and the current value Imax at the maximum power point of the solar cell during the MPPT control for each of the solar cells 1 to N, Can be a sensor value detected by the sensors 11 to 13 of the state detecting section, the voltage sensor provided to each of the solar cells 1 to N, and the current sensor.

When the voltage value Vmax and the current value Imax at the maximum power point are obtained for each of the solar cells 1 to N as described above, the control unit 100 calculates the voltage value Vmax and the current value Imax together with the voltage value Vmax and the current value Imax The solar cell power generation state values R _v and R _I at the voltage and current outputs are calculated using the basic output voltage value Vmax and the basic output current value Imax of the solar cell concerned.

Then, R _v and R _I , which are the power generation state values of the solar cells 1 to N, are monitored to calculate the series-parallel voltage reference values A1, A2, A3, ..., (B1, B2, B3, ..., BN).

In this case, if both R _v and R _I are equal to or greater than the serial parallel reference value, that is, if R _v is equal to or greater than the serial parallel voltage reference value and R _I is equal to or greater than the serial parallel current reference value, In series connection.

For example, in the MPPT control process, the voltage value Vmax and the current value Imax at the maximum power point of each of the solar cells 1 to N are monitored, and the voltage value Vmax and the current value Imax thereof are IEC 61646 is dimension compared to more than _{80% (R V ≥ 80%} (= A1, A2, A3, ... AN), R I ≥ 80% (= B1, B2, B3, ... BN)), the For solar cells, make a series connection by recognizing the normal output range.

At this time, the control unit 100 outputs a control signal for connecting the solar cells in the normal output range in series, and the driving of the switching switching unit 110 is controlled according to the control signal output from the control unit 100 (Relay switch or semiconductor switch control is controlled.) Connect solar cells in the normal output range in series.

That is, the control unit 100 turns on the relay switch in the switching switching unit 110 for connecting the solar cells in series, and then outputs the serial DC / DC converter 122 in accordance with the control signal.

On the other hand, each of the solar cell (1 ~ N) of the R _V is, but more than the serial-to-parallel voltage reference value, if R _I is lower than the serial-to-parallel current reference value, as the generated state problems such as localized shadow or light amount reduction, hot spots in the solar cell In this case, when a solar cell having an abnormal output is connected in series, the current value (Imax) of an unstable output solar cell having the worst generated power, that is, the output of the reduced solar cell, .

Therefore, in the case of a solar cell in which R _V is equal to or higher than the serial-parallel voltage reference value and R _I is less than the serial-parallel current reference value, the voltage and current output of other solar cells can be preserved by connecting the solar cells in parallel. The solar cell 100 outputs a control signal for connecting the solar cells in parallel.

In response to the control signal outputted from the control unit 100, the driving of the switching switching unit 110 is controlled (the driving of the corresponding relay switch or the semiconductor switch is controlled) so that the solar cells having an abnormal output are connected in parallel.

For example, the voltage value (Vmax) measured but the IEC 61646 standard or higher than _{80% (R V ≥ 80%} (= A1, A2, A3, ... AN)), the current value (Imax) is measured against standards IEC 61646 If it is less than _{80% (R I <80%} (= B1, B2, B3, ... BN)), and that the parallel connection to be the abnormal output state for the solar cell.

That is, the control unit 100 turns on the relay switch in the switching switching unit 110 for connecting the solar cells in parallel, and then outputs the parallel DC / DC converter 122 in accordance with the control signal.

Then, each solar cell (1 ~ N) of the R _V a serial-to-parallel voltage reference value if less while R _I is greater than or equal to the serial-to-parallel current reference value, as an example voltage value (Vmax) The IEC 61646 dimension, yet compared is less than 80% of the current value (Imax) is more than 80% of the IEC 61646 measurement standard, it is excluded from this control process since it is impossible to exist because each cell of the solar cell is connected in series.

Furthermore, each solar cell (1 ~ N) of R _v and R if _I is less than the cut-off voltage reference value (C) and block current reference value (D), that is R _v is either less than the cut-off voltage reference value (C) R _I the cut-off current If it is less than the reference value D, the control unit 100 cuts off the output to the power conversion unit 120 for the solar cell concerned.

For example, the voltage value (Vmax) The IEC 61646, or less than 70% of dimension _{(R V <70% (=} C)), if the current value (Imax) is less than 70% from the measurements IEC 61646 standard (R _I <70 % (= D)), the output is cut off for the solar cell concerned.

At this time, the control unit 100 outputs a control signal for shutting off the solar cell, and the driving of the switching switching unit 110 is controlled according to the control signal outputted from the control unit 100 So that the output from the solar cell to the power conversion unit 120 is cut off.

Alternatively, the output of the solar cell may be cut off by the switching switching unit 110, but it is also possible to add a separate shut-off switch 10, that is, a relay switch or a semiconductor switch, to the output terminals of the solar cells 1 to N At this time, when the shutoff switch 10 of the corresponding solar cell is turned off according to the control signal of the control unit 100, the output of the corresponding solar cell can be shut off.

In the present invention, the series-parallel voltage reference value and the series-parallel current reference value should be set to values larger than the cutoff voltage reference value and the cutoff current reference value as described above.

As described above, in the present invention, the solar cell installed in various parts of the vehicle can be secured with the maximum solar cell output by utilizing the dual DC-DC converter, thereby charging the vehicle battery or the electric load such as the parking ventilation system As a result, it is possible to maximize the effect of improving the fuel efficiency of the vehicle.

In particular, by monitoring the power generation status of each solar cell, the solar cells in the normal output range can be connected in series to output the generated power in the serial connection state, and the solar cells in the abnormal output state can be connected in parallel The output of the solar cell can be supplied to the vehicle at any time by minimizing the influence on the output of other solar cells.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. And are also included in the scope of the present invention.

1, 2, 3, 4, ..., N: solar cell
10: Disconnect switch
11, 12, 13: voltage sensor, current sensor
00:
110:
120: Power conversion section
121 and 123: Variable resistance circuit part
122: DC-DC converter for serial
124: DC-DC converter for parallel
130: Battery
141, 142, 143, 144, ..., M: electric load

Claims (23)

A plurality of solar cells respectively installed at predetermined positions of the vehicle;
A state detection unit for detecting an output state of each of the solar cells;
A control unit for outputting a control signal for controlling switching between direct and parallel connections between solar cells based on output states of the respective solar cells detected through the state detection unit;
A switching switching unit for connecting all the solar cells or selected ones of the solar cells to each other in series or in parallel with respect to the power conversion unit according to a control signal output from the control unit; And
And a power conversion unit that adjusts an output of the solar cell transmitted through the switching switching unit and outputs the adjusted output to a battery or an electric load of the vehicle,
Wherein,
Based on a voltage value at a maximum power point of each solar cell detected by the state detecting section, a current value at a maximum power point, and a basic output voltage value and a basic output current value predetermined for each solar cell, Decides whether to make a serial connection or a parallel connection,
_RV (%), which is the ratio of the voltage value at the maximum power point to the basic output voltage value for each solar cell, and R (%), which is the ratio of the current value at the maximum power point to the basic output current value _I (%) is obtained,
And the values of R _V and R _I obtained for each solar cell are compared with the serial-parallel voltage reference value and the serial-parallel current reference value of each solar cell to determine the series connection and the parallel connection of each solar cell. Battery utilization system.
The method according to claim 1,
Wherein the state detecting unit comprises:
A voltage sensor for detecting an output voltage of each of the solar cells; And
A current sensor for detecting an output current of each of the solar cells;
And the solar cell utilization system of the vehicle.
The method according to claim 1,
The switching-
And a plurality of switches connected in series or in parallel to each other in accordance with an on / off state of the output circuit between each of the solar cells and the power conversion unit and controlled by a control signal of the control unit Wherein the solar cell is a solar cell.
The method according to claim 1,
Wherein the power conversion unit comprises:
A series DC-DC converter for receiving and regulating an output of a solar cell connected in series; And
And a parallel DC-DC converter for receiving and outputting the output of the parallel-connected solar cell.
delete delete The method according to claim 1,
Wherein a basic output voltage value of each of the solar cells is determined by an output voltage value (V _ST ) of a corresponding solar cell according to IEC 61646 measurement standard, and a basic output current value of each of the solar cells is an output current value (I _ST ). &Lt; / RTI &gt;
The method according to claim 1,
Wherein,
Wherein when the R _v of the solar cell is equal to or higher than the serial-parallel voltage reference value and the R _I is equal to or greater than the serial-parallel current reference value, a control signal for serially connecting the solar cell is output.
The method according to claim 1,
Wherein,
Wherein when the R _V of the solar cell is equal to or higher than the serial-parallel voltage reference value and the R _I is less than the serial-parallel current reference value, a control signal for connecting the solar cells in parallel is output.
The method according to claim 1,
A blocking voltage reference value is set to a value smaller than the serial-parallel voltage reference value, a blocking current reference value is set to a value smaller than the serial-parallel current reference value,
Wherein,
The solar cell R _v is either less than the cut-off voltage reference value, if R _I is less than the cut-off current reference value, the solar cell of the vehicle, characterized in that for outputting a control signal for cutting off the output of the power conversion part for the solar utilization system .
The method of claim 10,
Wherein the driving of the switching switching unit is controlled according to a control signal outputted from the control unit so that the output to the power conversion unit of the solar cell is cut off.
The method of claim 10,
And a shutoff switch for shutting off the output of the solar cell according to a control signal output from the control unit is provided at an output terminal of each solar cell.
A state in which the output state of each solar cell is detected by a state detection unit for a plurality of solar cells installed at respective predetermined positions of the vehicle;
Determining whether to connect the solar cells to each other in series or parallel to the power conversion unit based on the output state of each solar cell detected by the state detection unit;
Controlling the driving of the switching switching unit according to a result determined based on an output state of each of the solar cells, thereby connecting all solar cells or selected solar cells in series or in parallel; And
Controlling the driving of the power conversion unit to adjust the output of the solar cell transmitted through the switching switching unit through the power conversion unit to be output to the battery or the electric load of the vehicle,
Based on a voltage value at a maximum power point of each solar cell detected by the state detecting section, a current value at a maximum power point, and a basic output voltage value and a basic output current value predetermined for each solar cell, Decides whether to make a serial connection or a parallel connection,
_RV (%), which is the ratio of the voltage value at the maximum power point to the basic output voltage value for each solar cell, and R (%), which is the ratio of the current value at the maximum power point to the basic output current value _I (%) is obtained,
And the values of R _V and R _I obtained for each solar cell are compared with the serial-parallel voltage reference value and the serial-parallel current reference value of each solar cell to determine the series connection and the parallel connection of each solar cell. Control method of battery utilization system.
14. The method of claim 13,
Wherein the state detecting unit comprises:
A voltage sensor for detecting an output voltage of each of the solar cells; And
A current sensor for detecting an output current of each of the solar cells;
And a control unit for controlling the operation of the solar cell utilizing system.
14. The method of claim 13,
Wherein the power conversion unit comprises:
A series DC-DC converter for receiving and regulating an output of a solar cell connected in series; And
And a parallel DC-DC converter that receives and outputs the output of the solar cells connected in parallel.
delete delete 14. The method of claim 13,
Wherein a basic output voltage value of each of the solar cells is determined by an output voltage value (V _ST ) of a corresponding solar cell according to IEC 61646 measurement standard, and a basic output current value of each of the solar cells is an output current value (I _ST ). &Lt; / RTI &gt;
14. The method of claim 13,
Wherein when the R _v of the solar cell is equal to or higher than the serial-parallel voltage reference value and the R _I is equal to or greater than the serial-parallel current reference value, the solar cells are connected in series.
14. The method of claim 13,
Wherein when the R _V of the solar cell is equal to or higher than the serial-parallel voltage reference value and the R _I is less than the serial-parallel current reference value, the solar cells are connected in parallel.
14. The method of claim 13,
A cutoff voltage reference value is set to a value smaller than the serial-parallel voltage reference value, a cutoff current reference value is set to a value smaller than the serial-parallel current reference value,
If the R _v is less than the solar cell is below the cut-off voltage reference value R _I the cut-off current threshold, the control method of the vehicle utilizing the solar cell system, characterized in that for blocking the output of the power converting portion for the solar cell.
23. The method of claim 21,
And controlling the driving of the switching switching unit to shut off the output to the power conversion unit of the solar cell.
23. The method of claim 21,
Wherein the control circuit controls driving of a disconnecting switch provided at an output terminal of each of the solar cells to shut off the output of the corresponding solar cell.

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