WO2022045422A1

WO2022045422A1 - Controller for solar lighting system and method for resetting solar lighting system

Info

Publication number: WO2022045422A1
Application number: PCT/KR2020/011691
Authority: WO
Inventors: 손창우; 제갈혁; 이병흥
Original assignee: 주식회사 엘씨엠싸이언스
Priority date: 2020-08-28
Filing date: 2020-09-01
Publication date: 2022-03-03
Also published as: KR20220028515A; KR102406740B1

Abstract

The present disclosure relates to a controller for a solar lighting system. The controller is a controller for a solar lighting system comprising: a photovoltaic panel; a secondary battery which is electrically connected to the photovoltaic panel so as to store electrical energy generated from the photovoltaic panel and is provided with a BMS; and a lighting device which is electrically connected to the secondary battery so as to be supplied with power from the secondary battery and emit light. The controller comprises: a charging unit configured to be interfaced between the photovoltaic panel and the secondary battery; a discharging unit configured to be interfaced between the secondary battery and the lighting device; a wireless communication unit configured to be capable of wireless communication with an external device; a main control unit configured to be able to process and control interface information between the photovoltaic panel and the secondary battery and/or interface information between the secondary battery and the lighting device and/or information of the wireless communication unit; and a reset control unit configured to be able to reset the main control unit and/or the BMS of the secondary battery by a reset signal input from the external device through the wireless communication unit. Further, the present disclosure provides a method for resetting a solar lighting system.

Description

Controller for solar lighting system and reset method of solar lighting system

This application is an application for priority claiming Korean Patent Application No. 10-2020-0109608 filed on August 28, 2020, and all contents disclosed in the specification and drawings of the application are incorporated herein by reference.

The present invention relates to a solar lighting system, and more specifically, for example, a system capable of generating electric power using sunlight, storing the produced electric power in a secondary battery, and driving a lighting device such as a street lamp or a security lamp with the stored electric power It relates to a controller for a solar lighting system comprising a, and a reset method of the solar lighting system using such a controller.

In general, a lighting system such as a street lamp or a security lamp is installed along a roadside for safety and security of traffic and pedestrians at night. In addition, a typical lighting system has a highway type, a bracket type, a main type, etc. depending on the type of the pole of the lighting system, and a high-pressure mercury lamp, a sodium lamp, a metal halide lamp, a CDM, etc. are used as a light source.

On the other hand, most of these types of lighting systems consume a lot of power from the light source and have a short lifespan, so maintenance takes a lot of time and money. In order to solve this problem, recently, LED light sources with high brightness, low power consumption, and relatively long lifespan have been used. On the other hand, there is a solar lighting system that produces electric power using a solar cell panel to supply electric power to a light source of the lighting system, and stores the produced electric power in a secondary battery to illuminate the light at night.

Solar lighting systems are mainly installed in places where there are few people or where it is difficult to install facilities for power supply or where the installation cost is excessive. It is a system that protects the safety of pedestrians. Such a solar street light system includes a solar cell module, a battery module capable of storing power generated from the solar cell module, a charge/discharge controller that charges the battery module with the power generated from the solar cell module, and an LED from the charged battery module, for example. and a control module for supplying power to a lighting device such as a lamp and managing the state of charge of the battery module.

According to the prior art, a street light dimming control system using the ubiquitous solar-based street light is disclosed. It detects the current state of street lamps in real time through the ubiquitous sensor network and independent power supply by sunlight, and identifies the efficient lamp management and safety and functional normality according to the illuminance, and performs remote control to prevent unnecessary energy waste of street lamps and continuously This is to keep you in control.

A battery management system (BMS) used for a secondary battery of a solar lighting system cuts off power applied to the controller when the voltage of the battery module falls below a threshold voltage. For example, when the power of the battery module is consumed due to the operation of the lighting device of the solar lighting system and the voltage of the battery module is lowered below the threshold voltage and the controller is turned off, the operation of the current solar lighting system is stopped. . After that, even if power is supplied by the solar panel, the controller does not operate, so the solar riding system does not operate. In this case, service personnel must directly charge the battery module to set the controller to work again. However, since the solar lighting system is often installed in a remote location, it is difficult to service it, especially in the case of a so-called all-in-one system in which the battery module and the controller are built inside the head of the lighting device, service personnel are dispatched. However, there is a problem that access is not easy.

The present invention was devised to solve the problems of the prior art described above, and the solar lighting system is located at a remote location or the battery module and controller are built in the all-in-one head of the lighting device, so that service personnel can easily access it If not, or if the system's unstable state is expected or not, for the stable operation of the system, the controller of the system and/or the BMS of the secondary battery that is normally operated by a reset signal wirelessly input from an external device from a remote or short distance An object of the present invention is to provide a controller for a solar lighting system and a reset method of the solar lighting system configured to be reset in a periodic automatic manner or in an arbitrary manual manner as required.

In order to achieve the above object, a controller for a solar lighting system according to an aspect of the present invention, a solar cell panel; a secondary battery electrically connected to the solar panel and provided with a BMS to store electrical energy generated from the solar panel; and a lighting device electrically connected to the secondary battery to receive power from the secondary battery to emit light, the controller for a solar lighting system comprising: a charging unit configured to interface between the solar cell panel and the secondary battery; a discharge unit configured to interface between the secondary battery and the lighting device; a wireless communication unit configured to enable wireless communication with an external device; a main control unit configured to process and control interface information between the solar panel and the secondary battery and/or interface information between the secondary battery and the lighting device and/or information from the wireless communication unit; and a reset control unit configured to reset the BMS of the main control unit and/or the secondary battery by a reset signal input from the external device through the wireless communication unit.

Preferably, the reset control unit includes a software reset circuit having a power input node to which a voltage is applied, a clock input node to receive a clock, and a reset output node to generate a reset signal.

Preferably, the reset control unit includes a hardware reset circuit by an R-C circuit.

Preferably, the wireless communication unit includes an IoT-based wireless communication module or a short-range wireless communication module.

Preferably, the main control unit further includes a sensing module, a WiFi module, a GPS module, a speaker module, or a camera module.

Preferably, the secondary battery and the controller are hermetically housed in a sealing accommodation portion of a writing head of the lighting device.

Preferably, the reset control unit is configured to operate within a predetermined time period after the end of charging of the secondary battery by the operation of the solar cell panel and before the start of discharging of the secondary battery by the operation of the lighting device.

Preferably, the reset signal input from the external device through the wireless communication unit is input in an automatic manner according to a predetermined period or in a manual manner arbitrarily determined by a user.

Preferably, the reset control unit is configured to be driven by power generated by the solar cell panel.

Preferably, the reset control unit is provided between the solar cell panel and the reset control unit, and further includes a regulator capable of adjusting the voltage generated from the solar cell panel to a predetermined voltage.

A reset method of a solar lighting system according to another aspect of the present invention for achieving the above object, a solar cell panel; a secondary battery electrically connected to the solar panel and provided with a BMS to store electrical energy generated from the solar panel; a lighting device electrically connected to the secondary battery to receive power from the secondary battery to emit light; and a controller configured to process and control interface information between the solar panel and the secondary battery and/or interface information between the secondary battery and the lighting device and/or information from the wireless communication unit A method of resetting a system, comprising operating a reset control unit configured to reset the BMS of the main control unit and/or the secondary battery by a reset signal input from an external device through a wireless communication unit of the controller.

Preferably, the step of operating the reset control unit is performed within a predetermined time interval after the end of charging of the secondary battery by the operation of the solar cell panel and before the start of discharging of the secondary battery by the operation of the lighting device.

Preferably, the reset control unit is configured to be driven by the power generated by the solar cell panel.

Preferably, the reset control unit is provided between the solar cell panel and the reset control unit, and is operated by a regulator that adjusts a voltage generated from the solar cell panel to a voltage capable of driving the reset control unit.

Preferably, the actuating the reset control is performed in an automatic manner by a predetermined period or in a manual manner arbitrarily determined by the user.

Preferably, the actuating of the reset controller is performed through a software reset circuit having a power input node to which a voltage is applied, a clock input node to receive a clock, and a reset output node to generate a reset signal.

Preferably, the step of operating the reset control unit is performed through a hardware reset circuit by an R-C circuit.

The method for resetting the solar lighting system controller and the solar lighting system according to the present invention has the following effects.

First, because the BMS of the controller and/or the secondary battery of the system, which is normally operated by a reset signal wirelessly input from an external device from a remote location or a short distance, can be reset in a periodic automatic manner or in an arbitrary manual method if necessary. , you can always keep your solar lighting system in optimum condition.

Second, even if there is no problem in the controller for the solar lighting system, by resetting periodically or as needed, potential errors of the system are prevented, thereby enabling semi-permanent operation of the system.

Third, in relation to system reset, the probability of software errors occurring in the controller for solar lighting system can be reduced through the data storage algorithm and reset circuit and firmware design prior to reset.

Fourth, even if an external or hardware error does not occur by using the watchdog timer in the controller, a system capable of stable operation can be implemented by configuring a circuit by a separate reset algorithm.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing summary of the invention as well as the following detailed description of preferred embodiments of the invention will be better understood when read in conjunction with the accompanying drawings. For the purpose of describing a controller for a solar lighting system and a reset method of the solar lighting system according to a preferred exemplary embodiment of the present disclosure, drawings of preferred embodiments are shown. It is to be understood, however, that the present disclosure is not limited to the precise arrangements and instrumentalities shown in such figures.

1 is a schematic configuration diagram of a controller for a solar lighting system according to an aspect of the present invention.

2 is a block diagram of a reset control unit of a controller according to an embodiment of the present invention.

3 is a block diagram of a reset control unit of a controller according to another embodiment of the present invention.

Certain terminology used in the detailed description that follows is for convenience only and does not limit the scope of the present invention. The terms “right”, “left”, “top” and “bottom” indicate directions in the drawings to which reference is made. The terms "inwardly" and "outwardly" refer respectively to directions toward or away from the geometric center of the designated device, system, and members thereof. “Anterior”, “rear”, “above”, “below” and related terms and phrases indicate positions and orientations in the drawing to which reference is made and are not intended to be limiting. These terms are concepts including the words listed above, derivatives thereof, and words with similar meanings.

Referring to FIG. 1 , the solar lighting system 100 according to an embodiment is electrically connected to the solar cell panel 10 so as to store electric energy generated from the solar cell panel 10 and the solar cell panel 10 . A secondary battery 20 connected and provided with a BMS 22 , and a lighting device 30 electrically connected to the secondary battery 20 to emit light by receiving power from the secondary battery 20 are provided.

In one embodiment, the controller 40 for the solar lighting system 100 of the above-described embodiments is a charging unit 42 configured to interface between the solar cell panel 10 and the secondary battery 20, the secondary battery 20 ) and a discharging unit 44 configured to interface between the lighting device 30, a wireless communication unit 46 configured to enable wireless communication with an external device 50, a charging unit 42, a discharging unit 44, and a wireless communication unit ( 46 as well as the main control unit 48 for controlling other modules of the controller 40 and processing information therebetween, and the main control unit by a reset signal input from the external device 50 through the wireless communication unit 46 (48) and/or a reset control unit (60) configured to reset the BMS (22). In addition, the main control unit 48 includes interface information between the solar cell panel 10 and the secondary battery 20 and/or interface information between the secondary battery 20 and the lighting device 30 and/or the wireless communication unit 46 . It is configured to process and control the information of

In one embodiment, the solar cell panel 10 is configured to produce power using the sun during the day, and may be manufactured from a conventional solar cell module or a flexible solar cell module currently in circulation. Solar cells are disposed on one surface of the solar cell panel 10 and can be rotated or rotatable to a panel installation part (not shown) of a pole (not shown) on the other surface, and optionally fixed to be separated from the panel installation part A fitting portion (not shown) is provided.

It is preferable that the solar cell panel 10 is installed inclinedly on the top of the pole of the lighting system 100 . The solar cell panel 10 is a solar cell device for converting light coming from the sun into electrical energy during the daytime using a photovoltaic effect. The solar cell panel 10, the amount of power generation and voltage, etc. may be determined according to the required lighting conditions or environment, for example, a solar cell panel of 310W (32V) may be used.

In an embodiment, the secondary battery 20 is a soft pack capable of binding a cell assembly in which a plurality of pouch-type or cylindrical cells electrically connected to each other and stacked are assembled, a main box in which the soft pack can be accommodated, and a cell. A sub box capable of accommodating a protection circuit module (PCS) connected to the assembly and detachably coupled to the outer wall surface of the main box is provided. For example, the soft pack has a size of 235 (length) * 120 (width) * 120 (height), an energy of 0.53 kWh, a rated capacity of 36 Ah, a nominal voltage of 14.8 DVC, and a pouch-type lithium to have a weight of approximately 2.3 to 3 kg. Bare cells for secondary batteries may be configured by, for example, physically binding a cell assembly electrically connected in a 3P4S method using, for example, an insulating tape or the like. Here, in the bare cells, an electrode assembly in which a plurality of positive plates and a plurality of negative plates are arranged at predetermined intervals on both sides of a separator is sealed inside a pouch together with an electrolyte. In addition, the secondary battery 20 may include a charge/discharge circuit for connecting the electrode terminals of the cell assembly.

In one embodiment, the secondary battery 20 includes the BMS 22 as described above. BMS 22 is installed to be connected to the printed circuit board to control to prevent overcharge, overdischarge, overcurrent, and short-circuit of the cells of the secondary battery 20 as well as Instead, the cells are balanced so that the charging of each cell is uniformly performed, and the cells are installed to be connected to a thermoelectric element to control the cells not to overheat. To this end, the BMS 22 includes a protection circuit module (PCM) for preventing overcharge, overdischarge, overcurrent, and short circuit of individual cells, and a cell balancer for uniformly charging each cell. ), and a heat dissipation control unit for preventing each cell from overheating. In one embodiment, the BMS 22 is manufactured in the form of a complex IC configured to simultaneously perform a PCM function, a cell balancing function, and an overcurrent control function. Of course, according to other embodiments, a chip performing the above-described PCM function, cell balancing function, and overcurrent control function may exist separately.

In one embodiment, the lighting device 30 is configured to be electrically connected to the secondary battery 20 to illuminate the surroundings at night using the power of the secondary battery 20 , for example, consisting of LED chips. A so-called 'All-in- One)' head. It should be noted that, according to an alternative embodiment, the lighting device 30 of the solar lighting system 100 may use any type of lighting that emits light, such as a halogen lamp or a mercury lamp.

In other embodiments, the secondary battery 20 and the controller 40 are not integrally accommodated in the head body of the lighting device 30 of the solar lighting system 100, but are provided separately from the pole and the terminal box and/or the pole. It can also be installed in the interior space.

In one embodiment, the controller 40 for the solar lighting system 100 according to the preferred embodiment of the present invention by adopting the so-called 3C technology (smart charging technology, DC/DC dimming converting technology, smart controlling technology) , to protect and improve the function and performance of the BMS 22 built into the secondary battery 20 , improve the efficiency of the system 100 and extend the life of the secondary battery 20 , and improve the charging performance of the secondary battery 20 . and to prevent overcharge and overdischarge, have a so-called battery wake-up function, maximize the power generation efficiency of the solar panel 10, and manage the lighting device 30 at a low energy level there is. On the other hand, the controller 40 can implement automatic on/off, multi-step dimming, etc. of the lighting device 30 using the interfaced GPS module 41 / timer program, and moreover, these functions are, for example, App (App) )/Web (Web) can be set in various ways.

The charging unit 42 is controlled by the main control unit 48 in order to stably and efficiently charge the DC current supplied from the solar cell panel 10 to the secondary battery 20 , and the amount of power provided at the input terminal of the controller 40 . The amount of power supplied to the controller 40 is sensed through the sensor 72 . The charging unit 42 continues to be charged even in a fully charged state so that the voltage of the secondary battery 20 continues to rise. It has a function of preventing the possibility of the secondary battery 20 from being heated or ignited when the internal pressure rises and, in particular, at a high temperature. Accordingly, the charging unit 42 generally controls the voltage to not exceed the rating of the secondary battery 20 during charging through constant current-constant voltage type charging. In addition, when there is a risk of exceeding the maximum rating of the secondary battery 20 , such as an error or failure of the controller 40 , the charging unit 42 blocks the charging current so as not to exceed the maximum rating of the secondary battery 20 . The overcharge protection function of the charging unit 42 may be similarly implemented in the BMS 22 as described above. Accordingly, the charging unit 42 has a function of backing up the overcharge protection function of the BMS 22 .

In one embodiment, the overcharge detection voltage performed by the charging unit 42 to make the maximum use of the capacity of the secondary battery 20 must be very high precision, and the cells or battery modules of the secondary battery 20 are connected in series In this case, the voltage of each cell and battery module is detected. The charging unit 42 includes an overcharge protection circuit having a precision of, for example, ±25 mV. In addition, after overcharging of the secondary battery 20 is detected and the BMS 22 or the protection circuit is activated, the discharging to the lighting device 30 is made through the parasitic diode of the charge cutoff FET. In addition, in the overcharge detection operation, the charging unit 42 needs a delay time to respond to pulse charging or to prevent malfunction due to noise. When the voltage of the secondary battery 20 exceeds the reference value while continuously sensing the voltage of the secondary battery 20, the charging unit 42 sends an OFF signal to the gate terminal of the charging cut-off FET to block the circuit.

In one embodiment, the discharge unit 44 detects the amount of current supplied from the secondary battery 20 to the lighting device 30 through the supply amount sensor 74 provided at the input end of the lighting device 30, thereby basically lighting It is controlled by the main control unit 48 to check or manage the power usage of the device 30 . For example, when the charging unit 42 charges the secondary battery 20 to approximately 41 to 43 V, the discharging unit 44 terminates discharging of the secondary battery 20 in the approximately 27 to 30 V range. When the secondary battery 20 is overdischarged, discharging continues even after the lithium in the negative electrode is depleted. At the same time, the copper foil is melted. Even in this case, the secondary battery 20 has a risk of ignition due to an internal short circuit and loses its function as a secondary battery. Accordingly, the discharge unit 44 is configured to block the discharge current when the voltage of the secondary battery 20 is equal to or less than a predetermined value. Of course, since the BMS 22 of the secondary battery 20 also has such an overdischarge protection function, the discharge unit 44 has a function of backing up the BMS 22 . In one embodiment, the discharge unit 44 sends an off (0ff) signal to the gate terminal of the discharge blocking FET when the voltage of the secondary battery 20 becomes less than or equal to a reference value while continuously sensing the voltage of the secondary battery 20 . to break the circuit.

In one embodiment, the wireless communication unit 46 is configured to be able to communicate wirelessly with the external device 50 and to be controlled by the main control unit 48 . Additionally, the wireless communication unit 46 operates the solar lighting system 100 (eg, on/off, dimming, receiving a reset command, operating a speaker or camera and storing data, measuring environmental pollution and storing data, pests). Logic or modules for controlling the controller 40 using the web or app as described above to enable two-way communication, long-distance communication, short-distance communication, and individual remote control.

In an embodiment, the wireless communication unit 46 may remotely manage and control the solar lighting system 100 , and in particular, as will be described later, may receive a reset signal from the external device 50 . That is, the wireless communication unit 46 transmits the operating status of individual components of the solar lighting system 100 that exist in a remote place, the occurrence of a failure, unique identification information of the system, and the location thereof with the central computer 52, mobile phone or smart device. The same may be transmitted to the mobile terminal 56, such as a user terminal 54, a radio or a remote control, and vice versa, may receive commands related to the operation or management of the system 100 from a user or operator. In addition, the wireless communication unit 46 is a solar lighting system 100 due to malfunction of individual elements of the solar cell panel 10 , the secondary battery 20 , and the lighting device 30 constituting the solar lighting system 100 . ) can actively and actively respond to civil complaints caused by errors. Moreover, since the operation of the solar lighting system 100 is performed at night, it is possible to solve a substantial part of the practical problem that it is not easy to check whether there is an abnormality in the operation of the solar lighting system 100 during the daytime. The wireless communication unit 46 includes an antenna 45 for transmission and reception that can be installed inside and outside the main body of the controller 40 .

In one embodiment, the wireless communication unit 46 acts as a communication network to obtain a variety of information from a sensor in the surrounding environment, a service interface technology for processing and processing information according to the service field and form, and the right to control the leakage of collected data and the device. Combined with security technology to protect it, it is possible to implement an Internet of Things (IoT) function that enables devices connected to the network to send and receive information smartly with each other without human intervention.

In one embodiment, the wireless communication unit 46 has a wide bandwidth, so it consumes a lot of power instead of a large amount of data transmission and has a short signal reach, WiFi, Bluetooth, short-range wireless communication (NFC), used within a licensed band NB-IoT for ultra-low power that intermittently transmits low-capacity data as one of the low-power, wide-area (LPWA) Internet of Things (IoT) technologies using LTE frequencies LORA, which has a simpler structure than SIGFOX and LTE-M, and can simplify the structure of base station equipment and terminals by connecting various things to a network using LTE Internet of Small Things).

As described above, when the components of the solar lighting system 100 of the present invention and the controller 40 are connected and configured through the Internet of Things, each component of the system 100 to which the sensor is attached is connected to the LTE network. Because it can be connected, a user can remotely control components anytime, anywhere, and control between components is also possible through mutual communication. In particular, the Internet of Things (IoT) can be implemented only by upgrading software without building additional equipment, thus reducing the cost burden compared to existing IoT networks such as Zegbee.

In an embodiment, the main control unit 48 may calculate the amount of power generated by the solar cell panel 10 from the input voltage and current values of the charging unit 42 according to time. The charge amount of the secondary battery 20 may be calculated by measuring the output voltage and current of the charging unit 42 over time, and the discharge amount of the secondary battery 20 is the input voltage of the DC/DC driver 47 over time and by measuring the current, and the remaining amount of the secondary battery 20 may be calculated by subtracting the amount of discharge from the amount of charge. Of course, in addition to these methods, such data may be measured or calculated by other methods, and if necessary, a circuit for detecting such data may be separately designed. Data such as the temperature of the secondary battery 20 , the brightness of the light emitting part of the lighting device 30 , power consumption, voltage and current, etc. may also be measured or calculated in a similar manner or by other suitable methods. To this end, the controller 40 has a measurement/calculation module 49 that interfaces with the various sensors of the system 100 .

In one embodiment, it is preferable that the main controller 48 controls the brightness of the light emitting part of the lighting device 30 according to the remaining amount of the secondary battery 20 by controlling the DC/DC driver 47 . Accordingly, it is possible to overcome a situation in which the lighting device is not operated at night even when the amount of charge of the electric power generated by the solar cell panel 10 is insufficient due to poor weather conditions.

In one embodiment, the main control unit 48 controls the wireless communication unit 46 so that the system 100 and the central computer 52 of the control center operating as a management server are connected, so that the It is configured to be able to receive various control signals and, conversely, transmit various status information of the system 100 to the central computer 52 .

In one embodiment, the main control unit 48 controls the dimming electronic ballast capable of adjusting the output power by the regulated DC input voltage and the lighting device whose illuminance is controlled by the output power of such a ballast, turn off and control the illuminance. It further includes a wireless dimming control unit (not shown).

In one embodiment, the controller 40 stores the state information extraction module including the above-described sensors to extract the state information within the system 100 , the extracted or measured data, or data transmitted from the external device 50 . It may include a memory module or a data conversion module for converting transmitted and received data into an appropriate form. Additionally or alternatively, the controller 40 may further include a Bluetooth module, an IoT module, a WiFi module, a speaker module, and a camera module. For example, the controller 40 is connected to a speaker (not shown) installed on the pole of the solar lighting system 100 through a speaker module and is configured to output external device or self-stored information. In addition, the controller 40 is configured to remotely control a camera (not shown) installed on the pole of the solar lighting system 100 through the camera module, or to store data recorded by the camera or to transmit it to the outside. In an alternative embodiment, the image captured by the camera may be viewed in real time or on the web/app whenever necessary.

In one embodiment, the main control unit 48 of the controller 40 and the BMS 22 of the secondary battery 20 are each provided with a microcomputer (Micom), and when the system 100 is unstable, the controller 40 The system 100 may self-reset to stabilize the system. According to a preferred embodiment of the present invention, the controller 40 is a reset configured to be able to reset the system 100 at an appropriate period or arbitrarily, even if the operation of individual components of the solar lighting system 100 is not unstable. a control unit 60 . The reset control unit 60 maintains the system 100 in an optimal state semi-permanently to extend the life of the system 100 and increase energy efficiency. ) can be reset.

In one embodiment, the reset control unit 60 before the start of discharging of the secondary battery 20 by the operation of the lighting device 30 after the charging of the secondary battery 20 by the operation of the solar cell panel 10 (for example) , before and after sunset) during a kind of rest period within a predetermined time interval. As such, the reason for operating the reset control unit 60 during the time before and after sunset is to avoid the time during which the solar cell panel 10 and the secondary battery 20 are actively operated during the day and at night, thereby making the solar lighting system 100 ) to prevent unnecessary interference and to increase energy efficiency. In addition, the reset signal input from the external device 50 through the wireless communication unit 46 is input in an automatic manner according to a predetermined cycle (eg, monthly, quarterly or annually) or in a manual method arbitrarily determined by the user. can be

In one embodiment, as described above, the reset control unit 60 embeds a watch dog timer in the microcontroller for an automatic reset function, and when a specified period or more elapses, a reset operation is performed using a reset pulse. is configured to start and remain in the reset state for a period of time. It can be configured to support the operation monitoring and reset function of the microcontroller by adding a reset IC that is independent hardware that provides a reset signal to the outside of the microcontroller in case reset is impossible. The automatic reset process of such a system checks the system re-execution and initial execution status, transmits a signal to the output port according to the time period of the timer to transmit a periodic signal to the reset IC, and periodically (e.g., a watchdog operation prohibition command) 0.5sec) and if the prohibition command is not executed for a certain period of time (eg 1.8sec), reset is executed and the timer time is initialized. At this time, the reset IC detects a signal from the WDI pin and transmits a reset signal when there is no signal for a certain period of time. The controller receives the reset signal from the reset IC to restart the system.

In an embodiment, as shown in FIG. 2 , the reset controller 60 includes a power input node VCC_ON to which a voltage is applied, a clock input node CLK_IN to receive a clock, and a reset output node for generating a reset signal. and a software reset circuit 62 with (RESET). The software reset circuit 62 is connected to circuits receiving a reset signal through the reset output node RESET, for example, the charging unit 42 and/or the BMS 22 .

In another embodiment, as shown in Fig. 3, the reset control unit 60 includes a hardware reset circuit 64 by means of an R-C circuit. A hardware reset circuit 64 provides the capacitor voltage of the R-C circuit as an output node. The output node signal is transmitted to the controller 40 and/or the BMS 22 which needs to be initialized by a reset signal via an inverter circuit which is an output processing circuit.

In one embodiment, the reset control unit 60 is configured to be driven by power generated by the solar cell panel 10 . To this end, as shown in FIG. 1 , the reset control unit 60 is provided between the solar cell panel 10 and the reset control unit 60 , and sets the voltage generated from the solar cell panel 10 to the reset control unit 60 . It further includes a regulator 66 for adjusting the voltage to be driven. In this embodiment, when electric power is charged from the solar cell panel 10 to the secondary battery 20 , or when electric power charged in the secondary battery 20 is discharged to the lighting device 30 , the secondary battery 20 is charged. Since the discharging operation is controlled by the main controller 48 , the operation of the regulator 66 is switched to the sleep mode by the main controller 48 when there is surplus power in the secondary battery 20 . The sleep mode refers to a standby state that consumes low power without being completely turned off. Accordingly, when the operation of the main controller 48 is stopped, the regulator 66 may wake up from the sleep and regenerate the main controller 48 .

More specifically, when the voltage of the secondary battery 20 falls below the threshold voltage during the operation of the system 100 , the main controller 310 turns off the operation of the BMS 22 in order to protect the secondary battery 20 . That is, when the voltage of the secondary battery 20 is less than the threshold voltage, the output is completely cut off, so the power applied to the controller 40 may be 0V. When the operation of the controller 40 is turned off, the regulator 66 may adjust the voltage of the electric power generated from the solar cell panel 10 to a predetermined voltage (eg, a voltage capable of regenerating the controller 40 ). .

While the foregoing detailed description and drawings represent preferred embodiments of the present invention, various additions, modifications, combinations and/or It should be understood that substitutes can be made. In particular, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms, structures, arrangements, and proportions using other elements, materials, and components without departing from the spirit or essential characteristics of the present invention. . It will be understood by those skilled in the art that the present invention may be used with many modifications of structure, arrangement, proportions, materials, or components adapted particularly to suit particular environmental and operating conditions without departing from the principles of the present invention. Also, the features described herein may be used alone or in combination with other features. For example, features described in connection with one embodiment may be used with and/or interchangeably with features described in another embodiment. Accordingly, the presently disclosed embodiments are to be regarded in all respects as illustrative and illustrative rather than restrictive, and the scope of the invention is indicated by the appended claims and not limited to the foregoing detailed description.

It will be understood by those skilled in the art that various modifications and variations of the present invention are possible without departing from the broad scope of the appended claims. Some of these have been discussed above by way of example and others will be apparent to those skilled in the art.

The present invention can be used in any controller configured to store electric power generated by using a solar cell panel in a secondary battery and use the stored electric power of the secondary battery to emit light of a lighting device and a device using the controller.

Claims

solar panel; a secondary battery electrically connected to the solar panel and provided with a BMS to store electrical energy generated from the solar panel; and a lighting device electrically connected to the secondary battery to receive power from the secondary battery to emit light,

a charging unit configured to interface between the solar cell panel and the secondary battery;

a discharge unit configured to interface between the secondary battery and the lighting device;

a wireless communication unit configured to enable wireless communication with an external device;

a main control unit configured to process and control interface information between the solar panel and the secondary battery and/or interface information between the secondary battery and the lighting device and/or information from the wireless communication unit; and

A controller for a solar lighting system comprising a reset control unit configured to reset the BMS of the main control unit and/or the secondary battery by a reset signal input from the external device through the wireless communication unit.
In claim 1,

The reset control unit includes a software reset circuit having a power input node to which a voltage is applied, a clock input node receiving a clock, and a reset output node generating a reset signal, the solar lighting system controller.
In claim 1,

The reset control unit includes a hardware reset circuit by the R-C circuit, a solar lighting system controller.
In claim 1,

The wireless communication unit includes an IoT-based wireless communication module or a short-range wireless communication module, a solar lighting system controller.
In claim 1,

The main control unit, a sensing module, a WiFi module, a GPS module, a speaker module or a camera module further comprising a, solar lighting system controller.
In claim 1,

The secondary battery and the controller are hermetically housed in a sealed accommodation portion of a lighting head of the lighting device, a solar lighting system controller.
In claim 1,

The reset control unit is configured to operate within a predetermined time period after the end of charging of the secondary battery by the operation of the solar panel and before the start of discharging of the secondary battery by the operation of the lighting device.
In claim 1,

The reset signal input from the external device through the wireless communication unit is input in an automatic manner according to a predetermined period or in a manual manner arbitrarily determined by the user, a solar lighting system controller.
In claim 1,

The reset control unit is configured to be driven by power generated by the solar panel, a controller for a solar lighting system.
In claim 9,

The reset control unit is provided between the solar panel and the reset control unit, and further comprising a regulator capable of adjusting the voltage generated from the solar panel to a predetermined voltage, a solar lighting system controller.
solar panel; a secondary battery electrically connected to the solar cell panel and provided with a BMS to store electric energy generated from the solar cell panel; a lighting device electrically connected to the secondary battery to receive power from the secondary battery to emit light; and a controller configured to process and control interface information between the solar panel and the secondary battery and/or interface information between the secondary battery and the lighting device and/or information from the wireless communication unit A method for resetting a system, comprising:

A method of resetting a solar lighting system, comprising operating a reset control unit configured to reset the BMS of the main control unit and/or the secondary battery by a reset signal input from an external device through the wireless communication unit of the controller .
In claim 11,

The step of operating the reset control unit is performed within a predetermined time period after the end of charging of the secondary battery by the operation of the solar panel and before the start of discharging of the secondary battery by the operation of the lighting device, the solar lighting system reset method.
In claim 11,

The reset control unit is configured to be driven by the power generated by the solar cell panel, the reset control unit, the reset method of the solar lighting system.
In claim 13,

The reset control unit is provided between the solar panel and the reset control unit, and is operated by a regulator that adjusts the voltage generated from the solar panel to a voltage capable of driving the reset control unit, the reset of the solar lighting system method.
In claim 11,

The step of activating the reset control unit is performed in an automatic manner by a predetermined period or in a manual manner arbitrarily determined by the user, the reset method of the solar lighting system.
In claim 11,

The step of activating the reset control unit is performed through a software reset circuit having a power input node to which a voltage is applied, a clock input node receiving a clock, and a reset output node generating a reset signal. Reset of the solar lighting system method.
In claim 11,

The step of operating the reset control unit, the reset method of the solar lighting system is performed through a hardware reset circuit by the R-C circuit.