KR20110049021A - Remote power control apparatus for vehicle - Google Patents

Abstract

PURPOSE: A remote power control apparatus for a vehicle is provided to help a user to automatically and efficiently manage the state change of a vehicle by monitoring the state of the vehicle in real time. CONSTITUTION: In a remote power control apparatus for a vehicle, a drive power sources switch(10) is installed between a drive power source and a load. A current detector(20) is installed between the drive power sources switch and the load. The current detector detects the amount of current flowing to the load. A controller(40) controls opening and closing of the drive power sources switch. A CAN(Controller Area Network) communications unit(50) through which the controller and an external device are communicated is provided.

Description

Remote power control device for vehicle {REMOTE POWER CONTROL APPARATUS FOR VEHICLE}

The present invention relates to a remote power control device for a vehicle. More specifically, the present invention relates to a remote power control device for a vehicle that can improve the efficiency and reliability of driving power management of the vehicle.

Recently, eco-friendly vehicle systems that can save more energy are being developed.

This eco-friendly vehicle system is recognized as an efficient way to cope with the global warming problem caused by the depletion of fossil fuels and greenhouse gases.

In this regard, a method for efficiently managing electric power of a vehicle is required.

However, it is still possible to actively monitor the state of the battery and the load of the vehicle by detecting the short-circuit fault and open-circuit fault of the vehicle in real time and monitoring the power management state of the vehicle in real time. No power control device is presented.

An object of the present invention is to provide a remote power control device for a vehicle that can improve the efficiency and reliability of the driving power management of the vehicle.

In addition, the present invention is to provide a remote power control device for a vehicle that can monitor the state of the vehicle in real time to actively and efficiently respond to changes in the vehicle state, such as a failure occurs.

In addition, the present invention is to provide a remote power control device for a vehicle that can fundamentally prevent the failure of the vehicle due to the occurrence of overcurrent or short-circuit current, and can reduce the cost associated with the failure handling.

In addition, the present invention is to provide a remote power control device for a vehicle that can improve the convenience of vehicle design and reduce the weight and volume of the vehicle by modularizing the necessary parts into one technical problem.

In accordance with an aspect of the present invention, a remote power control device for a vehicle is provided between a driving power supply switch unit installed between a power source and a load, and installed between the driving power supply switch unit and the load to detect an amount of current flowing to the load. And a controller for controlling opening and closing of the driving power supply switch unit according to the amount of current flowing into the load detected by the current detector, and a controller area network (CAN) communication unit for communication between the controller and an external device. do.

And a short circuit current detector installed between the driving power supply switch unit and the load to detect a short circuit current flowing to the load.

The short-circuit current detector compares the voltage according to the current flowing to the load with a preset reference voltage, and when the voltage according to the current flowing to the load is greater than the reference voltage, turns off the driving power supply switch and turns off the short-circuit current generating signal. Characterized in that the transmission to the control unit.

The display device may further include a display unit configured to display state information including current amount information flowing to the load received from the control unit via the CAN communication unit.

The CAN communication unit may transmit an operation command from the external device to the control unit or transmit state information including current amount information flowing to the load from the control unit to the external device.

The driving power supply switch unit, the current detection unit, the control unit, the short-circuit current detection unit and the CAN communication unit is characterized in that modularized into one.

According to the present invention, there is an effect that a remote power control device for a vehicle that can improve the efficiency and reliability of driving power management of the vehicle is provided.

In addition, there is an effect that a remote power control device for a vehicle that can monitor the state of the vehicle in real time to actively and efficiently respond to changes in the state of the vehicle, such as a failure occurs.

In addition, there is an effect that a remote power control device for a vehicle that can fundamentally prevent the failure of the vehicle due to the occurrence of overcurrent or short-circuit current, and can reduce the cost associated with the failure handling.

In addition, there is an effect that the remote power control device for a vehicle that can improve the convenience of the vehicle design and reduce the weight and volume of the vehicle by modularizing the necessary parts into one.

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

1 is a view showing a vehicle remote power control apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a vehicle remote power control apparatus according to an embodiment of the present invention may include a driving power supply switch unit 10, a current detector 20, a controller 40, a short circuit current detector 30, and a CAN controller. Area Network) is configured to include a communication unit 50 and the display unit 70.

The driving power supply switch unit 10 is installed between the driving power and the load to supply the driving power to the load or to block the driving power supply to the load by an opening and closing operation.

As an example, the driving power supply switch unit 10 may include a field effect transistor (FET) and a field effect transistor driver (FET Driver) for adjusting the magnitude of the voltage supplied to the gate of the field effect transistor. The field effect transistor driver controls the opening and closing of the field effect transistor serving as a switch by using a low power signal of a TTL or CMOS level supplied from the internal power supply 60 as a drive signal under the control of the controller 40, It is configured to block the driving signal of the field effect transistor which is the power device quickly and accurately when it occurs. For example, the field effect transistor driver can be implemented by adopting TC4420 from TelCom Semiconductor, Inc. The TC4420 turns on or off power devices due to the increase in capacitance value between the gate and source of power devices when a large field effect transistor type power device is used or when the power devices are used in parallel. It is a device used to reduce power loss during On / Off). This device can drive up to 6 amps (A) powerfully, which allows the power device to be quickly turned on and off and minimizes the heat loss of the power device that can be generated when it is turned on and off. When used in parallel, the problem can be minimized and the field-effect transistor can be turned on / off with a low power drive signal.

The current detection unit 20 is provided between the driving power supply switch unit 10 and the load, and is a means for detecting the amount of current flowing to the load through the field effect transistor.

The current detector 20 converts the detected amount of current signal into a voltage signal and outputs the converted signal to the controller 40.

The control unit 40 is a means for controlling the opening and closing of the driving power supply switch unit 10 in accordance with the amount of current flowing to the load detected by the current detection unit 20.

The controller 40 controls the opening and closing of the field effect transistor by performing a predetermined current cutoff algorithm by converting the current amount signal received from the current detector into analog and digital.

More specifically, the controller 40 which receives the voltage signal corresponding to the current amount signal detected by the current detector 20 calculates the amount of current flowing to the load through analog-to-digital conversion of the received signal, and calculates this value. It is judged whether it is in overcurrent state by comparing with the stored value. That is, the controller 40 is programmed to control the opening and closing of the field effect transistor according to this algorithm.

The short circuit current detection unit 30 is a means for detecting the short circuit current flowing between the driving power supply switch unit 10 and the load flowing to the load.

The short-circuit current detector 30 compares the voltage according to the current flowing into the load with a preset reference voltage, and when the voltage according to the current flowing into the load is greater than the reference voltage, turns off the driving power supply switch unit 10 and short-circuit current. The generation signal may be configured to be transmitted to the controller 40.

In order to perform this function, the short-circuit current detection unit 30, for example, the current sensing means for detecting the current flowing to the load, the reference voltage generating means for generating a reference voltage, the voltage and the reference according to the current flowing to the load Comparing means for comparing the voltage may be configured. The current sensing means may have a small size and may be implemented by connecting two or three shunt resistors in parallel so as to detect a current of 250 amps or more. In addition, a shunt regulator, which is a voltage stabilizer, may be used as a reference voltage generating means for generating a reference voltage, and to reduce the influence of external noise in the sensed current and to reduce the initial inrush current effect of the capacitive load. An RC primary low pass filter circuit can be added to the reference voltage generating means. In addition, the comparison means compares the voltage, the filtering component of the sensing current, with the reference voltage, and when the voltage, the filtering component of the sensing current, becomes larger than the reference voltage, recognizes it as a short circuit and outputs a short-circuit current generation signal to the controller 40 and the field effect transistor driver. When the short-circuit current generation signal is input, the field effect transistor driver turns off the field effect transistor, thereby protecting the load and power element field effect transistor.

The CAN communication unit 50 is a means for communication between the control unit 40 and an external device. For example, the external device may be a driving module for driving a vehicle.

This embodiment transmits an operation command from the external device to the control unit 40 via the CAN communication unit 50 or transmits state information including current amount information flowing from the control unit 40 to the external device to the load. That is, the CAN communication unit 50 is responsible for processing the status signal output and operation command reception of the vehicle power control apparatus according to an embodiment of the present invention through the CAN communication between the external device and the control unit 40. Examples of the state signal may include current amount information flowing to the load, on / off state information of the field effect transistor, and the like.

The display unit 70 is a means for displaying state information including current amount information flowing to the load received from the control unit 40 via the CAN communication unit 50.

Meanwhile, all components except the display unit 70, that is, the driving power supply switch unit 10, the current detector 20, the controller 40, and the short circuit current detector constituting the embodiments of the present invention, 30) and the CAN communication unit 50 can be modularized into one, thereby reducing weight and volume.

Hereinafter, a detailed operation flow of a remote power control apparatus for a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

First, when an operation command reception interrupt occurs in the CAN communication unit 50 by an operation command from an external device in step S12, a CAN communication algorithm for performing CAN communication between the external device and the control unit 40 is performed in step S14. In step S21, the controller 40 determines whether the field effect transistor is in an on state.

As a result of the discrimination in step S21, when the field effect transistor is in the off state, it is switched to step S40 and the driving power supplied to the load is cut off.

On the other hand, as a result of the discrimination in step S21, when the field effect transistor is in the on state, it is switched to step S23. In step S23, a current calculation algorithm is executed by receiving the amount of current information flowing to the load detected in step S22, and in step S24, it is determined whether overcurrent flows to the load.

As a result of the discrimination in step S24, when it is determined that overcurrent flows in the load, the process is switched to step S25 to perform the overcurrent blocking algorithm, and the process is switched to step S40 to cut off the driving power supplied to the load.

As a result of the discrimination in step S24, when it is determined that no overcurrent flows in the load, the process is switched to step S50 to keep the field effect transistor on to continue supplying driving power to the load.

On the other hand, in parallel with this process, the short-circuit current is detected through the short-circuit current detector 30 in step S32, and in step S33 it is determined whether or not a short circuit accident has occurred based on the detection result in step S32.

As a result of the discrimination in step S33, when a short circuit accident occurs, the process is switched to step S40, and the driving power supplied to the load is cut off by turning off the field effect transistor.

As a result of the discrimination in step S33, if a short circuit accident has not occurred, the process is switched back to step S32 to carry out a continuous short circuit current detection process.

State signals such as current amount information flowing to the load collected in this process, on / off state information of the field effect transistor are transmitted to the external device through the process of steps S14 to S16.

According to the present invention as described in detail above, first, there is an effect that a remote power control device for a vehicle that can improve the efficiency and reliability of driving power management of the vehicle is provided.

Second, there is an effect that a remote power control device for a vehicle that monitors the state of the vehicle in real time to actively and efficiently respond to changes in the state of the vehicle, such as a failure occurs.

Third, there is an effect that a remote power control device for a vehicle that can fundamentally prevent the failure of the vehicle due to the occurrence of overcurrent or short-circuit current, and can reduce the cost associated with the failure handling.

Fourth, there is an effect that the remote power control device for a vehicle that can improve the convenience of vehicle design and reduce the weight and volume of the vehicle by modularizing the necessary parts into one.

The present invention is a device that can be applied to the energy efficiency improvement and safety device in an environmentally friendly vehicle system that is rapidly progressing in recent years. The present invention can be widely applied to a hybrid vehicle, a fuel cell vehicle, and various eco-friendly energy generation and energy storage devices. More specifically, the present invention detects short-circuit faults and open-circuit faults of the vehicle in real time to monitor the power management state of the vehicle in real time to actively monitor the state of the battery and the load of the vehicle. By making it manageable, energy efficiency can be maximized.

In addition, the present invention is applicable to the power management control system in the system of industrial automation devices, such as electric vehicles, solar energy, wind power generation system, energy management by the integrated management of various load management of the complex and safety-required vehicles as a whole It is widely applicable to the improvement of storage system efficiency.

Although the technical spirit of the present invention has been described above with reference to the accompanying drawings, this is intended to describe exemplary embodiments of the present invention by way of example and not to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

1 is a view showing a vehicle remote power control apparatus according to an embodiment of the present invention.

2 is a view showing the operation of the vehicle remote power control apparatus according to an embodiment of the present invention.

***** Explanation of symbols for the main parts of the drawing *****

10: drive power supply switch unit 20: current detection unit

30: short circuit current detection unit 40: control unit

50: CAN (Controller Area Network) communication unit

60: internal power supply

70: display unit

Claims (6)

In the vehicle remote power control device, A drive power supply switch unit installed between the drive power and the load; A current detector installed between the driving power supply switch unit and the load to detect an amount of current flowing to the load; A control unit for controlling opening and closing of the driving power supply switch unit according to the amount of current flowing into the load detected by the current detecting unit; And And a controller area network (CAN) communication unit configured to communicate with the controller and an external device. According to claim 1, And a short circuit current detector installed between the driving power supply switch unit and the load to detect a short circuit current flowing to the load. The method of claim 2, The short circuit current detector Comparing the voltage according to the current flowing to the load with a preset reference voltage and when the voltage according to the current flowing to the load is greater than the reference voltage, turning off the driving power supply switch and transmitting a short-circuit current generation signal to the controller. Characterized in that, the vehicle remote power control device. The method according to any one of claims 1 to 3, And a display unit for displaying status information including current amount information flowing to the load received from the control unit via the CAN communication unit. The method according to any one of claims 1 to 3, Remote control device for a vehicle, characterized in that for transmitting the operation command from the external device to the control unit via the CAN communication unit or the status information including the current amount information flowing to the load from the control unit to the external device. The method according to any one of claims 1 to 3, The driving power supply switch unit, the current detection unit, the control unit, the short-circuit current detection unit and the CAN communication unit, characterized in that modularized into one, the vehicle remote power control device.

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