WO2012128414A1

WO2012128414A1 - Power distribution apparatus using convergence of smart led lighting and new renewable energy and driving method thereof, and protective circuit for power distribution apparatus using convergence of smart led lighting and new renewable energy and driving method thereof

Info

Publication number: WO2012128414A1
Application number: PCT/KR2011/002498
Authority: WO
Inventors: 김상옥; 김병오; 조민진; 김동식; 강구연
Original assignee: (주)유양디앤유
Priority date: 2011-03-21
Filing date: 2011-04-08
Publication date: 2012-09-27

Abstract

Embodiments of the present invention relate to a power distribution apparatus using a convergence of smart LED lighting and renewable energy and a driving method thereof, and a protective circuit for a power distribution apparatus using a convergence of smart LED lighting and renewable energy and a driving method thereof. A power distribution apparatus using a convergence of smart LED lighting and renewable energy, according to an embodiment of the present invention, comprises: a power management part for generating and storing power for driving a lamp; a protective circuit part for generating a plurality of detection signals by detecting abnormalities of different characteristics in the power management part, generating logic signals by combining the detection signals with combinational logic, and providing a logic signal when a logic signal is requested to determine the abnormality of the power management part; a key input part for issuing an initialization command to detect the abnormality of the power management part, and providing input signals for detecting abnormalities with different characteristics when the detection signals are combined using a combinational logic after the initialization; and a control part for initializing at the initialization command, requesting and receiving the logic signal, and controlling the power management part on the basis of the logic signal.

Description

Smart LED lighting and renewable energy fusion power distribution device and driving method thereof, protection circuit of smart LED lighting and renewable energy fusion power distribution device and driving method thereof

Embodiments of the present invention relate to a smart LED lighting and renewable energy fusion power distribution device and a driving method thereof, a protection circuit of smart LED lighting and renewable energy fusion power distribution device and a driving method of the protection circuit. . More specifically, smart LED lighting and renewable energy, which protects against the application of overcurrent or overvoltage in the power management unit that supplies the hybrid street light using solar and wind power, and also digitally precisely controls the hybrid street light. The present invention relates to an energy fusion power distribution device, a driving method thereof, a protection circuit of a smart LED lighting and a renewable energy fusion power distribution device, and a driving method of the protection circuit.

The contents described in the following sections provide background information related to the embodiments of the present invention, but it does not constitute a prior art.

In general, road lights ensure the visibility of pedestrians and vehicle drivers to prevent accidents and crimes, and to allow safe and comfortable traffic. These road lights are divided into street lights installed along the roadside for street lighting, traffic safety, or aesthetics, and security lights installed for safety in areas where crime or accidents may occur due to dark conditions. It is 8-12 m normally, and security lights are 8 m or less normally.

1 is a view showing a general street light.

As shown in FIG. 1, a general street light includes a support 100 fixedly installed at an outer boundary of a roadway, a support arm 110 and a support arm 110 extending from the top of the support 100 to the roadway side. It is composed of a street lamp head 120 which is located at the front end and has a lamp (not shown) inside.

Here, high-pressure mercury lamps, fluorescent lamps, sodium lamps, electric bulbs, light emitting diodes (LEDs), etc. are used as lamps for street lamps, but the development of technology using LEDs in terms of energy saving and efficiency is now spreading. It is becoming.

And, the converter for applying power for driving the LED in the street light is typically installed in the lower portion of the support 100, the LED and the converter to maintain a distance of about 10 m depending on the height of the support (100) have.

A conventional lamp driver including such a converter drives a lamp by converting a commercial power of 110 to 220 V through an analog method, that is, a rectifying circuit, a smoothing circuit, and a full bridge circuit, to drive the lamp, and further, an overcurrent when driving the lamp. Alternatively, the overvoltage may be detected to drive the lamp on and off according to the detection result.

For example, the voltage applied to the lamp may be adjusted by controlling the pulse width modulation (PWM) of the full bridge circuit according to the overcurrent or overvoltage detection signal.

However, although the conventional lamp driver includes a protection circuit for protecting the lamp, such a protection circuit detects overcurrent or overvoltage and controls the driving of the lamp in an analog manner, for example, various other factors such as battery temperature. Considering these, the driving of the lamp is not precisely controlled.

An embodiment of the present invention prevents overvoltage or overcurrent from being applied to a battery that stores power for driving a street light or a tunnel, and detects package temperature of the battery or overcharge and overdischarge of the battery. Smart LED lighting and renewable energy fusion power distribution device and driving method thereof, protection circuit of smart LED lighting and renewable energy fusion power distribution device An object of the present invention is to provide a method of driving the protection circuit.

Smart LED lighting and renewable energy convergence power distribution apparatus according to an embodiment of the present invention includes a power management unit for generating and storing power for driving the lamp; The power manager detects an abnormality of different characteristics to generate a plurality of detection signals, generates a logic signal by logically combining the detection signals, and generates the logic signal to determine whether the power management unit is abnormal. A protection circuit unit for providing the logic signal at the request of the controller; A key input unit which commands an initialization to detect an abnormality of the power management unit, and provides an input signal for the logical combination upon detecting the abnormality of the different characteristics after performing the initialization; And a controller for performing initialization according to the initialization command, receiving the request to receive the logic signal, and controlling the power manager based on the logic signal.

In addition, the protection circuit of the smart LED lighting and renewable energy convergence power distribution apparatus according to an embodiment of the present invention detects the abnormality of the different characteristics for the power management unit for generating and storing the power for driving the lamp to detect the detection signal Signal detection unit for generating and outputting; A logic combiner for generating a first logic signal by logically multiplying the detection signal by an input signal of a key input unit, and outputting a second logic signal by negating and logically combining the first logic signal; And an abnormal signal detector configured to provide the second logic signal to the controller as a signal for the abnormality when the second logic signal is requested so that the controller controls the driving of the lamp based on the second logic signal. It is characterized by including.

According to an exemplary embodiment of the present invention, a method of driving smart LED lighting and a renewable energy fusion power distribution device includes generating and storing power for driving a lamp; When the lamp is driven, a detection signal is generated by detecting abnormalities of different characteristics, a logic signal is generated by logical combination of the detection signals, and the logic signal is provided when the logic signal is requested to know whether the abnormality is detected. Doing; Instructing initialization to detect whether there is an abnormality, and providing an input signal in the logical combination to detect whether the different characteristics are abnormal after performing the initialization; And performing initialization according to the command, making the request to receive the logic signal, and controlling generation and storage of the power based on the logic signal.

In addition, the driving method of the smart LED lighting and renewable energy fusion power distribution apparatus according to an embodiment of the present invention comprises the steps of performing an initialization process according to the initialization command for detecting whether there is an abnormality of different characteristics generated when driving the lamp; Receiving a logic signal for the abnormality generated by performing a logical combination of a detection signal detecting the abnormality and an input signal provided during the initialization command after performing the initialization process; Determining whether an abnormality has occurred when the lamp is driven based on the logic signal, and if there is an abnormality as a result of the determination, determining a problem; Determining whether a detection value for the abnormality is within an allowable error range if the abnormality is a programmatic problem; Determining whether the abnormality is correctable if it is within the error range as a result of the determination as to whether the error is within the tolerance range; And if the abnormality is correctable, controlling driving of the lamp to improve the abnormality.

The protection circuit driving method of the smart LED lighting and the renewable energy fusion power distribution apparatus according to an embodiment of the present invention detects and detects an abnormality of different characteristics with respect to a power manager that generates and stores power for driving a lamp. Generating and outputting a signal; Generating a first logic signal by logically multiplying the detection signal by an input signal of a key input unit, and outputting a second logic signal by negating and logically combining the first logic signal; And providing the second logic signal to the controller as a signal for the abnormality upon request of the second logic signal to control the driving of the lamp based on the second logic signal.

According to an embodiment of the present invention, in a protection circuit of a battery in which a plurality of batteries capable of charging and discharging are connected in series, an overvoltage and an overcurrent are prevented from being applied to a battery storing power to drive a street lamp. Risks such as fire can be reduced.

In addition, since the digital protection circuit is provided, accurate control of the charging unit or the power management unit for driving the lamp is enabled, thereby ensuring stable and efficient power charging and discharging of the lamp.

Furthermore, the power conversion unit and the key input unit can prevent malfunctions or operation mistakes in advance, thereby supplying a voltage suitable for a charging circuit composed of a charger and a battery, thereby improving the reliability of the entire system.

1 is a view showing a typical street lamp,

2 is a block diagram of a smart LED lighting and renewable energy fusion power distribution device according to an embodiment of the present invention,

3 is an exemplary view of a hybrid street light including the lamp of FIG. 2;

4A to 4D are exemplary views of the overcurrent signal detector, the overvoltage signal detector, the overcharge and overdischarge signal detector, and the battery temperature signal detector shown in FIG.

5 is a view showing a driving process of the apparatus of FIG.

6 is a view illustrating a detailed driving process of the protection circuit of FIG.

7 is a diagram illustrating a detailed driving process of the controller of FIG. 2.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

2 is a block diagram of a smart LED lighting and a renewable energy fusion power distribution apparatus according to an embodiment of the present invention, Figure 3 is an exemplary view of a hybrid street light including the lamp of FIG.

As shown in Figure 2 and 3, smart LED lighting and renewable energy convergence power distribution apparatus according to an embodiment of the present invention is a power management unit 110, protection circuit unit 120, key input unit 130 and the control unit 140, and may further include a lamp 100.

First, the lamp 100 may include all of incandescent lamps, high-pressure mercury lamps, fluorescent lamps (CCFL, EEFL), sodium lamps, LEDs, and the like used in a street lamp, a tunnel lamp, an indoor lamp, and a lamp according to an embodiment of the present invention. 100 is preferably used in a hybrid street light that can also be driven by solar or wind power. As shown in FIG. 3, the hybrid street light may include a post 301, a street lamp head 303, a solar power generation unit 305, and a wind power generation unit 307. Here, the pillar 301 serves as a pillar for installing a street lamp in a specific place such as a street or a park, and the street lamp head 303 is provided on a support arm (not shown) extending from the pillar 301 and includes a smart LED light. It includes a lamp 100 that receives power from the renewable energy fusion power distribution device and emits light. In addition, the solar power generation unit 305 includes a photovoltaic module for generating power by receiving sunlight, the wind power generation unit 307 includes a wind power generation module for generating power by moving a turbine using wind power. Can be.

2, only the lamp 1 101 and the lamp 2 103 are illustrated for convenience of description, but the lamp 100 may include a plurality of first to N-th lamps. 1 (101) and the even-numbered lamp 2 (103) may be simultaneously lit or alternately lit under the linkage of the power manager 110. For example, the odd-numbered lamp 1 101 or the even-numbered lamp 2 103 consists of a charger 1 111a and a battery 1 113a in the power management unit 110, for example, to continuously drive during night time. The power is alternately provided in the manner of receiving power through the first path or receiving power through the second path including the charger 2 (111b) and the battery 2 (113b).

The power manager 110 includes the BMSs 110_1 and 110_2 and the power converter 115, and the BMSs 110_1 and 110_2 may include a charger 111 and a charger 111 for obtaining power using solar or wind power generation. It may include a battery 113 for storing the power provided by the). In this case, the charger 111 and the power converter 115 may be referred to as a charging controller, and the BMSs 110_1 and 110_2 may be referred to as a charging circuit unit.

The charger 111 constituting the BMSs 110_1 and 110_2 may include some or all of a rectifier circuit, a smoothing circuit, a bridge circuit, and the like to convert an AC voltage into a DC voltage, and the battery 113 may include a charger 111. The DC voltage provided from) is stored and provided to the lamp 100. Here, the rectifier circuit generates a half-wave or full-wave rectified voltage with respect to an AC voltage, where the rectified voltage is not a full direct current, so the smoothing circuit converts the rectified voltage to a full direct current, and the bridge circuit is a half or As a circuit such as a full bridge, the output voltage of the smoothing circuit is driven by switching on / off.

In addition, the power converter 115 may include a pulse width modulation (PWM) controller and a switch, although not shown in detail in the drawing. Here, the PWM controller includes an amplifier to generate a PWM control signal by comparing the signal provided under the control of the controller 140 (or the main controller) with the reference value Vref, and the charger 111 using the PWM control signal. For example, the duty ratio of the switching element constituting the bridge circuit in the charger 111 can be adjusted. For example, the switching unit may control the paths of the BMS 1 110_1 and the BMS 2 110_2 or the first and second paths inside the BMS 1 110_1 or the BMS 2 110_2 under the control of the controller 140. have. For example, the switching unit may alternately turn on the lamp 1 101 and the lamp 2 103 by alternately selecting the paths of the BMS 1 110_1 and the BMS 2 110_2 under the control of the controller 140. The battery 1 113a and the battery 2 113b may be charged and discharged by alternately selecting the first path and the second path in the BMS 1 110_1 or the BMS 2 110_2.

The protection circuit unit 120 may include a signal detector 121, a logic combiner 123, and an abnormal signal detector 125. In this case, the logic combiner 123 and the abnormal signal detector 125 may be, for example, SN7425 and MC7425. It can consist of a series of IC chips. The signal detector 121 may include, for example, an overcurrent signal detector 121a, an overvoltage signal detector 121b, an overcharge and overdischarge signal detector 121c, a battery temperature signal detector 121d, and the like. The overcurrent signal detection unit 121a detects an overcurrent state when the battery 113 is charged, and the overvoltage signal detection unit 121b detects whether a voltage higher than a prescribed value is output when an overvoltage is not applied to the terminal voltage or the load of the battery 113. The overcharge and overdischarge signal detector 121c detects an overcharge or overdischarge state of the battery 113. For such detection, the overcurrent signal detection unit 121a, the overvoltage signal detection unit 121b, and the overcharge and overdischarge signal detection unit 121c respectively set reference currents or reference voltages, and compare the set reference values with the detected signals. The abnormal signal can also be detected in a manner. The battery temperature signal detector 121d may detect a temperature of a battery package in the power manager 110 by using a temperature sensor or the like. Other details will be discussed later.

The logic combiner 123 receives and detects and outputs a logic combination of each detection signal having characteristics such as overcurrent, overvoltage, overcharge and overdischarge, and battery temperature detected by the signal detector 121. As one example, the logic combining unit 123 according to the embodiment of the present invention may include, for example, an AND circuit and an NOR circuit. Here, the AND circuit generates an output signal when both inputs are high active, that is, '1', so that the logic combination unit 123 performs overcurrent, overvoltage, overcharge, overdischarge, and battery temperature through the AND circuit. It is possible to distinguish and detect each abnormality sign related to the etc., and since the NOR circuit outputs a signal in the form of low active, that is, '0' even if any one of the four inputs is present, a logic combination unit is provided. 123 may notify the abnormal signal detector 125 that at least one abnormality indication has been detected through the NOR circuit. In order to perform its function, the logic combination unit 123, more precisely, the AND circuit, may operate in conjunction with the key input unit 130.

The abnormal signal detector 125 provides the controller 140 with a logic signal, that is, an abnormal symptom signal, provided from the logic combination unit 123 according to an execution command from the controller 140. In this case, the abnormal signal detector 125 may sequentially or simultaneously provide the controller 140 with an abnormal indication signal having different characteristics according to the operation method of the key input unit 130. For example, if a result of overcurrent detection is provided at any time T, i.e. if an abnormality indication signal is provided, the result of battery temperature detection may be provided at a time T + α over which T has elapsed. Can be. In this manner, the abnormal signal detector 125 may sequentially provide detection results for overcurrent, overvoltage, overcharge and overdischarge, and battery temperature at the request of the controller 140. Of course, when the plurality of logical combination units 123 are configured in parallel, it may be possible to simultaneously process the signals without time delay for the signals sequentially input from the abnormal signal detection unit 125. It will not be limited to that.

The key input unit 130 allows a user to select an automatic mode or a manual mode, and provides an input signal for inputting a main power of the system or stopping the system in an emergency, and performing a reset function. As a possible place, for example, when an input signal is provided from the key input unit 130 to the control unit 140 when performing a reset function to start charging, the control unit 140 may initialize internal programs and hardware. In addition, the key input unit 130 may accurately detect different abnormalities detected by the signal detection unit 121, for example, in association with the logic combination unit 123. For example, when the main power is applied or after the reset function is performed, the key input unit 130 provides the input signal to the logical combination unit 123 sequentially or simultaneously according to the selection of the automatic mode, and provides the input signal related information to the controller 140. Can provide. The information related to the input signal may be used to determine which detection unit is a result of an abnormality output by the input signal provided at a specific time period.

When the controller 140 provides an input signal related to the start of charging, the controller 140 performs an initialization process for the internal program and the hardware accordingly, and when the initialization process is completed, the operation of the power manager 110. In the process, it is determined whether an abnormal symptom is detected, and further, if an abnormal symptom is detected, which detection part corresponds to an abnormal symptom. In order to determine such an abnormal indication, the controller 140 asks the abnormal signal detection unit 125 whether or not an abnormal symptom occurs, and if there is an abnormal signal provided from the abnormal signal detection unit 125, the controller 140 controls the power management unit. It may be determined that the problem has occurred in the 110, and it may be analyzed what kind of symptom it corresponds to, and a control signal for solving the problem is generated and provided to the power converter 115 according to the analysis result. As a result, the power converter 115 to manage the BMS (110_1, 110_2). For example, the power converter 115 may determine the charge / discharge of the battery 113 in the BMSs 110_1 and 110_2 or select the lamp 100 that is turned on under the control of the controller 140. . In this process, if a separate program is used, the result of the abnormal phenomenon, that is, the measured value received by the signal detector 121 is compared with the information stored in the form of, for example, a lookup table. As a result of checking the error range, if it is determined that the problem cannot be solved outside the error range, the controller 140 may stop the system. Alternatively, the system operator may determine that there is an error in the system and press the emergency stop key of the key input unit 130 to stop the operation of the system.

Referring to FIGS. 4A to 4D together with FIG. 2, the overcurrent signal detector 121a according to an exemplary embodiment of the present invention may detect an overcurrent state when the battery 113 is charged. As in a), it may include a Hall-CT 401, a resistor R ₁ , a second order low pass filter 403, a summing part 405 and a diode 407. The input current at both ends of the battery 113 may be outputted through the Hall-CT 401, for example, converted to 50 mA at an input maximum current of 50 A, and the changed 50 mA of current at the output terminal may have a resistance of 33 mA (R _1). ) Is converted into a voltage level of 1.65 V and input to the A / D converter or the controller 140.

In addition, the overvoltage signal detector 121b may detect the voltage of the voltage sensor module 411 as shown in (b) of FIG. 4 to detect whether a voltage higher than a predetermined value is output when an overvoltage is not applied to the terminal voltage or the load of the battery 113. A buffer 413, a secondary low pass filter 415, a differential amplifier 417, and a diode 419 may be included. The voltage sensor module 411 measures the DC voltage of the input voltage and the battery 113 by using a voltage divider and a voltage transducer, and the measured DC voltage is, for example, the secondary low pass filter 415 and the differential amplifier 417. To be printed out. The output signal or the measured value may be provided to the controller 140.

The overcharge and overdischarge signal detector 121c may detect an overcharge or overdischarge state of the battery 113. For this purpose, for example, as shown in FIG. 4C, the constant voltage circuit unit 421 and the voltage comparator 423 may be included. The constant voltage circuit unit 421 and the voltage comparator 423 detect the measured voltage and current and provide the measured voltage and current to the controller 140, and the controller 140 executes a program in real time to calculate the residual capacity and the charge amount, for example, a comparison value. In order to control the charger 111 according to the comparison result.

The battery temperature signal detector 121d detects the temperature of the battery 113 in the power manager 110 using a temperature sensor or the like. For this purpose, for example, the thermistor circuit 431 and the temperature signal amplifier 433 may be included as shown in FIG. The thermistor circuit section 431 and the temperature signal amplifying section 433 detect the temperature corresponding to the temperature when the temperature rises, for example. In this manner, any battery 113 can ideally capture the charge end timing. However, it is very inconvenient that the temperature sensing sensor or element should always be in close contact with the battery 113. In addition, the battery temperature signal detection unit 121d measures the temperature of the internal case battery using a thermistor, undergoes a process of correcting in the control unit 140 via the temperature signal amplifying unit 433, and then, The charger 111 may be controlled according to the determination result.

5 is a view illustrating a driving process of the apparatus of FIG. 2.

Referring to FIG. 5 together with FIG. 2, the smart LED lighting and the renewable energy fusion power distribution device according to the embodiment of the present invention generates power for driving the lamp 100 through the power manager 110. The generated power is stored in the battery 113 (S501). Here, the power generation is substantially made in the charger 111, the charger 111 according to an embodiment of the present invention to perform the process of converting the AC voltage generated by solar or wind power generation to DC voltage, etc. Can be. The battery 113 charges the voltage provided by the charger 111 and discharges the charged voltage to the lamp 100.

When the lamp 100 is being driven through the power manager 110, the protection circuit 120 detects an abnormality of different characteristics in order to determine whether an abnormality occurs in the power manager 110. In order to precisely determine whether there is an abnormality, a logic signal is generated by a logical combination, and the generated logic signal is provided at the request of the controller 140, for example (S503). When logical combinations are performed on various abnormal factors as described above, it is possible to precisely determine which part is abnormal, and according to the determination result, the controller 140 may take measures to improve the abnormal phenomenon.

The key input unit 130 first instructs the control unit 140 to proceed with the initialization so that the protection circuit unit 120 can more accurately measure the abnormality, and then the protection circuit unit 120, more specifically, the logic combination unit 123. In step S505, an input signal is provided to perform a logical combination process to accurately determine which part is abnormal. For example, the key input unit 130 may be configured to accurately detect an abnormality of the overcurrent signal detector 121a, the overvoltage signal detector 121b, the overcharge / overdischarge signal detector 121c, and the battery temperature signal detector 121d. By providing the input signal to the AND circuit of the combination unit 123 simultaneously or sequentially at intervals of time, the protection circuit unit 120 may provide information about a specific part having an abnormality from the protection circuit unit 120 to the controller 140. Make sure

As an example, an overcurrent signal is detected in FIG. 2. In this case, the key input unit 130 provides a 5 V signal corresponding to '1' as an input of the AND circuit to which the overcurrent signal detection unit 121a is connected, and corresponds to 'O' or 0 V as an input of the remaining AND circuits. Input the signal. Accordingly, if there is a detection signal detected from the overcurrent signal detection unit 121a, the logic combination unit 123 of the protection circuit unit 120 connects the AND circuit connected to the overcurrent signal detection unit 121a to a signal of '1' as the first logic signal. Since the rest of the AND circuit will output a signal of '0', the NOR circuit finally outputs a signal of '0' as the second logic signal so that an abnormality has occurred in relation to the overcurrent. 140 can determine. If the NOR circuit is configured as an OR circuit, the logic combination unit 123 will output a signal of '1' as the second logic signal.

In addition, the controller 140 initializes internal hardware and programs according to an initialization command of the key input unit 130, and then requests and receives an abnormal signal, that is, a second logic signal, from the protection circuit unit 120. Power generation or storage of the lamp 100 may be controlled using two logic signals (S507). For example, if the protection circuit unit 120 provides a four-bit signal of "0001" to the control unit 140, the control unit 140 determines that the problem is related to overcurrent, and the signal of "1000" to the control unit 140. If so, the controller 140 may determine that the battery temperature is a problem and control the generation or storage of the lamp 100. If the controller 140 can use the measured value or information provided from the signal detector 121, the power manager 110 for driving the lamp 100 by additionally determining whether the abnormality is outside the tolerance range. The abnormal phenomenon of can be improved. If it is determined that the problem cannot be solved in this process, the controller 140 may stop the entire system.

6 is a diagram illustrating a detailed driving process of the protection circuit of FIG. 2.

Referring to FIG. 6 together with FIG. 2, the signal detector 121 detects an abnormality of different characteristics with respect to the power manager 110 generating and storing power for driving the lamp 100, and accordingly detects a plurality of signals. A detection signal is generated and output (S601). Here, different characteristics indicate characteristics related to overcurrent, overvoltage, overcharge, overdischarge, package temperature, and the like provided to the battery 113.

The logic combiner 123 logically ANDs the detection signal provided by the signal detector 121 and the input signal provided by the key input unit 130 to generate a first logic signal, and negatively sums the first logic signals. (NOR) to output a second logic signal (S603). For example, if an abnormality is detected by the overcurrent signal detector 121a and the overvoltage signal detector 121b of the signal detector 121, the key input unit 130 is used as an input of an AND circuit connected to the overcurrent signal detector 121a. When providing the signal of '1', the first logic signal of '1' is output only from the AND circuit connected to the overcurrent signal detector 121a, and the remaining AND circuits output the first logic signal of '0'. Done. Accordingly, the second logic signal generated by the negative logic of the first logic signals outputs a signal of '0'. Subsequently, when the key input unit 130 provides a signal of '1' to the input of the AND circuit connected to the overvoltage signal detector 121b, only the AND circuit connected to the overvoltage signal detector 121b may have a value of '1'. The first logic signal is output, and the rest of the AND circuit outputs the first logic signal of '0'. As a result, the second logic signal of '0', which is generated by negating the first logic signals, is output. As such, as the input signal is provided through the key input unit 130, the control unit 140 may determine which part of the power management unit 110 has an error. Of course, since this is only one example for detecting the abnormality of the power management unit 110 through the logic combination unit 123, it may be changed in various ways, and therefore, the embodiment of the present invention will not be limited thereto.

The abnormal signal detector 125 provides an abnormal signal, that is, a second logic signal, at the request of the controller 140 (S605). In order to perform this function, the abnormal signal detector 125 may provide a second logic signal provided by the NOR circuit by driving the internal switching element on / off at the request of the controller 140. In order to notify of abnormality, the abnormal signal detector 125 may output various types of signals such as 4 bits, 8 bits, 16 bits, and 32 bits as the second logic signal, which is related to system design. Further explanation will be omitted.

7 is a diagram illustrating a driving process of the controller of FIG. 2.

Referring to FIG. 7 together with FIG. 2, the controller 140 of the smart LED lighting and the renewable energy fusion power distribution device receives an input signal from the key input unit 130 and performs an initialization process (S701). In this process, the controller 140 may proceed with initialization of internal hardware or software.

Subsequently, the control unit 140 outputs an abnormal signal indicating whether an abnormality has occurred in the protection circuit unit 120, more specifically, the abnormal signal detection unit 125, for example, in the power management unit 110 for lighting the lamp 100 used in the hybrid street light. In operation S703, a request-related signal may be received. In this process, if the input signal is sequentially provided to the AND circuit of the logic combination unit 123 in order to detect the abnormal signal from the key input unit 130, the control unit 140 spaces the time through the abnormal signal detection unit 125. The abnormal signal provided may be received. Of course, such an abnormal signal detection process may be performed not only at the start of charging through the key input unit 130, but also when the main power is applied to the system.

As a result of determining whether there is an abnormal signal (S705), if there is no abnormal signal, the controller 140 operates the charging / discharging of the power management unit 110 for driving the lamp 100 normally (S707). In other words, the controller 140 will not perform a separate procedure for adjusting characteristics such as overcurrent and overvoltage of the power manager 110.

If there is an abnormal signal, the controller 140 reconfirms the abnormal signal or analyzes the measured value or information provided by the signal detector 121 and determines a hardware problem of the power management unit 110 to determine whether it is a hardware problem. A program for confirming can be executed (S709).

For example, if the maximum allowable range of the battery temperature is 40 ° C. by executing the program, the result of confirming the error range is out of step S711. If it is determined that the error is out of the error range, the control unit 140 performs a check of the charging system (S713). ), The charging and discharging for driving the normal lamp 100 is controlled.

If it is within the allowable error range, the controller 140 may further determine whether or not the problem is impossible to solve (S715), and stop the charging / discharging operation of the power manager 110 if the problem is not solved (S717).

On the other hand, if the problem can be solved, the controller 140 may correct the corresponding error to perform charging and discharging for driving the lamp 100 (S719). For example, if the overvoltage detection result is within the allowable range but can be corrected, the error can be corrected by adjusting the overvoltage level.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

In addition, the terms "comprise", "comprise" or "having" described in the specification mean that a corresponding component may be included unless otherwise stated, and thus, other components are excluded. It should be construed that it may further include other components. All terms, including technical and scientific terms, have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

Embodiments of the present invention are applicable to smart LED lighting and renewable energy fusion power distribution device and a method of driving the device, a protection circuit of smart LED lighting and renewable energy fusion power distribution device and a driving method of the protection circuit. According to an embodiment of the present invention, in the protection circuit of a battery in which a plurality of batteries capable of charging and discharging are connected in series, it is not known that overvoltage and overcurrent are applied to a battery that stores electric power to drive a street lamp. Prevention will reduce risks such as fire. In addition, since the digital protection circuit is provided, accurate control of the charging unit or the power management unit for driving the lamp is enabled, thereby ensuring stable and efficient power charging and discharging of the lamp. Furthermore, the power conversion unit and the key input unit can prevent malfunctions or operation mistakes in advance, thereby supplying a voltage suitable for a charging circuit composed of a charger and a battery, thereby improving the reliability of the entire system.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims priority to US Patent Application No. 2011-0025010, filed in Korea on March 21, 2011, pursuant to Article 119 (a) (35 USC 119 (a)). Incorporated by reference in this patent application. In addition, if this patent application claims priority to a country other than the United States for the same reason, all its contents are incorporated into this patent application by reference.

Claims

A power manager to generate and store power for driving the lamp;

The power manager detects an abnormality of different characteristics to generate a plurality of detection signals, generates a logic signal by logically combining the detection signals, and generates the logic signal to determine whether the power management unit is abnormal. A protection circuit unit for providing the logic signal at the request of the controller;

A key input unit which commands an initialization to detect an abnormality of the power management unit, and provides an input signal for the logical combination upon detecting the abnormality of the different characteristics after performing the initialization; And

A control unit which performs initialization according to the initialization command, receives the logic signal by making the request, and controls the power management unit based on the logic signal;

Smart LED lighting and renewable energy fusion power distribution device comprising a.
The method of claim 1,

The power management unit,

First and second chargers for generating and providing the power;

First and second batteries respectively storing power of the first and second chargers; And

A power converter configured to convert power supplied from the first and second chargers to the first and second batteries under control of the controller;

Smart LED lighting and renewable energy fusion power distribution device comprising a.
The method of claim 1,

The protection circuit unit,

A signal detector for detecting an abnormality in part or all of an overcurrent, an overvoltage, an overcharge, an overdischarge, and a battery temperature of the power manager;

A logic combiner for generating a logic signal by logically combining the detection signal of the signal detector and the input signal of the key input unit; And

The abnormal signal detector for providing the logic signal at the request of the controller

Smart LED lighting and renewable energy fusion power distribution device comprising a.
The method of claim 1,

The key input unit sequentially provides the input signal for the logic combination to detect at least two or more of the overcurrent, overvoltage, overcharge, overdischarge, and battery temperature. Dispensing device.
A signal detector configured to generate and output a detection signal by detecting an abnormality of different characteristics with respect to a power manager that generates and stores power for driving a lamp;

A logic combiner for generating a first logic signal by logically multiplying the detection signal by an input signal of a key input unit, and outputting a second logic signal by negating and logically combining the first logic signal; And

Upon request of the second logic signal, an abnormal signal detection unit for providing the second logic signal as a signal for the abnormality so that the controller controls the driving of the lamp based on the second logic signal.

The protection circuit of smart LED lighting and renewable energy fusion power distribution device comprising a.
The method of claim 5,

The signal detection unit has a smart LED light, characterized in that having a first to fourth detection signals for detecting the overcharge, overdischarge and package temperature of the battery for providing power to the lamp, the overcurrent provided to the lamp, the overvoltage, respectively; Protection circuit of renewable energy fusion power distribution device.
The method of claim 5,

When the first logic signal is generated as '1' by the input signal, the logic combination unit generates '0' for the remaining first logic signal, and negates and logically combines the first logic signal to generate the second logic signal. The protection circuit of the smart LED lighting and renewable energy convergence power distribution device characterized in that the output signal.
Generating and storing power for driving the lamp;

When the lamp is driven, a detection signal is generated by detecting an abnormality of different characteristics, and a logic signal is generated by logically combining the detection signals, and upon request of the logic signal to know whether the abnormality occurs. Providing a logic signal;

Instructing initialization to detect whether there is an abnormality, and providing an input signal in the logical combination to detect whether the different characteristics are abnormal after performing the initialization; And

Performing initialization according to the command, making the request to receive the logic signal, and controlling generation and storage of the power based on the logic signal.

Smart LED lighting and renewable energy fusion power distribution device driving method comprising a.
Performing an initialization process according to an initialization command for detecting an abnormality of different characteristics generated when driving a lamp;

Receiving a logic signal for the abnormality generated by performing a logical combination of a detection signal detecting the abnormality and an input signal provided during the initialization command after performing the initialization process;

Determining whether an abnormality has occurred when the lamp is driven based on the logic signal, and if there is an abnormality as a result of the determination, determining a problem;

Determining whether a detection value for the abnormality is within an allowable error range if the abnormality is a programmatic problem;

Determining whether the abnormality is correctable if it is within the error range as a result of the determination as to whether the error is within the tolerance range; And

If the abnormality is correctable, controlling the driving of the lamp to improve the abnormality.

Smart LED lighting and renewable energy fusion power distribution device driving method comprising a.
The method of claim 9,

The method of driving the smart LED lighting and the renewable energy fusion power distribution device, based on the logic signal is determined whether the abnormality occurs when the driving of the lamp, if there is no abnormality, the lamp is driven without additional control Smart LED lighting and renewable energy convergence power distribution device driving method.
The method of claim 9,

The driving method of the smart LED lighting and the renewable energy fusion power distribution device is determined to be a program problem, and if it is not a program problem, it is determined as a hardware problem. Method of driving a smart LED lighting and renewable energy convergence power distribution device comprising the step of driving.
The method of claim 9,

The driving method of the smart LED lighting and the renewable energy fusion power distribution device, characterized in that it comprises the step of stopping the driving of the lamp if it is out of the tolerance range as a result of determining whether it is within the tolerance range. Driving method of smart LED lighting and renewable energy convergence power distribution device.
The method of claim 9,

The abnormality of the different characteristics generated when the lamp is driven includes some or all of the abnormality of the battery overcharging, overdischarging, package temperature, overvoltage and overcurrent provided to the lamp. A method of driving smart LED lighting and renewable energy fusion power distribution device, characterized in that.
Generating and outputting a detection signal by detecting an abnormality of different characteristics with respect to a power manager that generates and stores power for driving a lamp;

Generating a first logic signal by logically multiplying the detection signal by an input signal of a key input unit, and outputting a second logic signal by negating and logically combining the first logic signal; And

Providing the second logic signal to the controller as a signal for the abnormality upon request of the second logic signal to control the driving of the lamp based on the second logic signal.

The protection circuit driving method of the smart LED lighting and renewable energy fusion power distribution device comprising a.