KR20220033934A - Stand-alone solar lighting system utilizing ess - Google Patents

Abstract

The present invention relates to a stand-alone solar lighting system using an energy storage system (ESS). The stand-alone solar lighting system using an ESS comprises: two or more lighting devices each of which includes a pole installed on the ground, and a light emitting unit provided at the end of the pole; one or more solar cell panels which are installed on the ground so as to be spaced apart from the pole; and an ESS which is installed on the ground to be electrically connected to the solar cell panels and to supply power to the light emitting unit, to store electric energy produced from the solar cell panels.

Description

Independent solar lighting system using ESS {STAND-ALONE SOLAR LIGHTING SYSTEM UTILIZING ESS}

The present invention relates to a solar lighting system, and more particularly, to an independent solar lighting system using an energy storage device (ESS).

In general, development of a solar lighting system such as a solar street lamp or a security lamp based on renewable energy due to global warming is actively being made. However, in a general solar lighting system, a solar cell panel is installed on top of a pole provided with a light emitting part, and a battery is installed underground, on the ground, or inside the pole, so-called one street light, a solar cell panel and a battery are arranged one-to-one take the configuration

On the other hand, in the case of a general lighting system such as a street lamp or a security lamp using a commercial power system, a plurality of (eg, 10) street lamps are modularized into one unit, and these modular street lights or security lights are separated from the commercial power system through a distribution board. A method in which power is supplied and the on/off of streetlights is controlled is used.

Meanwhile, according to the Ministry of Environment, as of the end of 2019, the cumulative number of electric vehicles supplied in Korea is about 57,000 units, and about 430,000 units are planned to be supplied by 2022. As such, as the spread of electric vehicles increases, the scale of distribution of batteries is also increasing.

Currently, regulations related to the disposal of waste batteries of electric vehicles require that the recovered batteries be returned to the relevant local government when an electric vehicle that has received a purchase subsidy under the Air Environment Conservation Act is scrapped. However, there is no detailed procedure for recycling, disassembling, and disposing of returned batteries, so there is an urgent need to prepare related regulations and a new industrial structure accordingly. In this regard, in the case of Germany, all manufacturers and importers of batteries and capacitors are obligated to collect used batteries by registering with the Federal Environment Agency, and batteries of unregistered producers cannot be sold on the German market. there is. Accordingly, social and environmental problems of waste batteries for electric vehicles are emerging.

In general, through the performance diagnosis technology of waste batteries for electric vehicles, only 70-80% or more of the same grade is recycled like an ESS system, and underperformance batteries are recovered and recycled as metals with economic value such as nickel and manganese.

Therefore, there is a need to build an ESS as an independent power source for a solar-based lighting system by recycling waste batteries that are discarded after being used in an electric vehicle.

Registered Patent Publication 10-1598063

The present invention was conceived to solve the problems of the prior art described above, in which solar cell panels are not installed on each pole of the lighting devices, but are modularly configured for a plurality of light emitting units of the lighting devices, so that from the poles of the lighting device At the same time as being installed on the ground spaced apart, the ESS for storing power generated from solar panels and supplying power to the light emitting units also has a structure that can be installed on the ground in a state spaced apart from individual poles of lighting devices, ESS An object of the present invention is to provide an independent solar lighting system using

In addition, another object of the present invention is to store electric power generated by using a solar cell panel in an ESS or a recycled or regenerated ESS by using a waste battery, and the stored electric power can be used independently as a power source for light emitting units of lighting devices. It is to provide an independent solar lighting system using ESS with improved structure.

Independent solar lighting system using ESS according to the present invention for achieving the above objects, as an independent solar lighting system using ESS, includes a pole installed on the ground and a light emitting part provided at the end of the pole, respectively one or more lighting devices; one or more solar cell panels installed on the ground to be spaced apart from the pole; An energy storage system (ESS) installed on the ground is provided so as to be electrically connected to the solar panel to store the electric energy produced from the solar panel and to supply power to the light emitting unit.

Preferably, the independent solar lighting system using the ESS of the present invention further includes a distribution box configured to distribute the power supplied from the ESS to each of the two or more lighting devices.

Preferably, the distribution box further includes a controller configured to process and control interface information between the solar cell panels and the ESS and/or interface information between the ESS and the lighting devices.

Preferably, the lighting devices comprise from 2 to 10 poles and light emitting parts.

Preferably, the stand-alone solar lighting system using the ESS of the present invention further comprises a switch configured to connect the lighting devices to the commercial power system when the ESS is in error or completely discharged.

Preferably, the stand-alone solar lighting system using the ESS of the present invention further includes an inverter for converting AC power supplied from the commercial power system into DC power.

Preferably, the two or more lighting devices use a conventional street light or security light driven by the commercial power grid.

Preferably, the ESS includes a regenerative battery for electric mobility including a waste battery for an electric vehicle or a golf cart having a predetermined capacity.

Preferably, the solar cell panels are installed on top of the ESS.

Preferably, the light emitting part of the lighting devices is a street lamp or a security lamp composed of LEDs.

Independent solar lighting system using ESS according to the present invention has the following effects.

First, instead of installing a solar panel on top of individual poles of lighting devices constituting a solar lighting system, a solar panel for configuring one unit or module is installed and managed on the ground in a state spaced apart from the poles. Therefore, installation and management are simple, and the configuration and management cost of the system can be reduced.

Second, by using waste batteries for electric vehicles, old batteries, and recycled batteries for mobility of electric devices as ESSs for independent solar lighting systems, it is possible to find a way to recycle waste batteries, and countries or It has the effect of reducing the policy burden on local governments and contributing to the creation of new business models and new jobs in the industry.

Third, by grafting waste batteries for electric vehicles to the solar lighting system, the resources of waste batteries for electric vehicles, which have 70~80% of the remaining capacity, can be recycled, so it can contribute to the new and renewable energy commercialization strategy, which is one of the national projects. there is.

Fourth, it is possible to remarkably reduce the implementation cost of a general solar lighting system by allowing large-capacity waste batteries for electric vehicles to be recycled into an independent solar lighting system.

Fifth, it is possible to minimize environmental damage caused by misuse of batteries through recycling of large-capacity waste batteries for electric vehicles.

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 illustrating a standalone solar lighting system using an ESS 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 an independent solar lighting system using an ESS according to an exemplary 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 to directions toward or away from the geometric center of the designated apparatus, device, system, and members thereof, respectively. “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.

1 is a schematic configuration diagram of an independent solar lighting system using an ESS according to a preferred exemplary embodiment of the present invention.

Referring to FIG. 1 , a stand-alone solar lighting system 100 using an ESS is installed in a location so as to be spaced apart from two or more lighting devices 10, individual poles 12 of the lighting devices 10 One or more solar panels 20 to be used, each light emitting part of the lighting devices 10 electrically connected to the solar panels 20 so as to be able to store the electrical energy produced from the solar panels 20 . An energy storage system (ESS) 30 installed on the ground is provided so as to supply power to the 14 .

Each lighting device 10 includes a pole 12 installed on the ground and a light emitting part 14 provided at an end of the pole 12 . The lighting devices 10 may be configured in a module form, for example, 10 each on both sides of a road or a street. According to this embodiment, only the light emitting part 14 is installed on the upper end of the pole 12 of the lighting device 10 and the solar cell panel 20 is not installed. Accordingly, the lighting device 10 has the advantage of being able to implement a solar lighting system by directly utilizing the lighting device of the conventional lighting system in which the solar cell panel 20 is not installed.

The solar cell panels 20 are installed in the form of separate modules on the ground spaced apart from each pole 12 of the lighting device 10 as described above. Each solar cell panel 20 is a solar cell device for converting light coming from the sun into electrical energy using a photovoltaic effect. In the case of the present embodiment, the solar cell panel 20, for example, by connecting 10 310W (32V) solar panels (2 in series × 5 in parallel) of approximately 3.1kW (64V) of power (eg, 12.4kWh It is configured to produce power generation). In other embodiments, the electrical connection configuration of the solar panels 20 may be changed depending on the number of lighting devices 10 or the output voltage of the individual light emitting portion 14 of the lighting devices 10 used. It will be fully understood by those skilled in the art.

In one embodiment, the solar cell panel 20 may be installed in the form of an inclined roof on the upper end of the ESS 30 , as will be described later.

The ESS 30 is electrically connected to the solar cell panels 20 and each light emitting part of the lighting devices 10 to store electrical energy produced from the solar cell panels 20 as described above. It is installed in the ground at a substantially central location of the poles 12 of the lighting devices 10 and spaced apart from the lighting devices 10 so as to supply power to be used in 14 . In addition, the ESS 30 is composed of a recycled secondary battery, for example, a plurality of waste battery packs, preferably waste battery packs for electric vehicles. It is preferable that the plurality of such battery packs be accommodated in a separately manufactured case (not shown).

In one embodiment, the ESS 30 uses a discharge voltage tester to discharge the waste battery pack over a predetermined current value (eg, 100 amps) for a predetermined time (eg, 10 seconds) when the discharge voltage value is a predetermined value (eg, 9v) or higher and the same voltage value is maintained when repeatedly tested multiple times (eg, 7 times) in the same way, for example, it may be a waste battery pack for an electric vehicle. The ESS 30 selects whether or not it is a recyclable waste battery from among a plurality of waste battery packs for electric vehicles, so that an acid and a metal with a high ionization react to form a secondary battery with qualifications as a space medium that can turn chemical energy into electrical energy. When the internal selpan is short-circuited or the weakened selpan is damaged during reuse, the electron ions generated by the oxidation reaction during discharge do not move, so an appropriate voltage cannot be formed and the charging electricity is properly supplied during charging. This is to minimize the problem that the reduction reaction cannot occur because distilled water is not electrolyzed in the cell.

In one embodiment, the ESS 30 is based on the reuse performance measured through the tester, and the battery capacity and resistance value corresponding to the intended use is, for example, 70-85% (eg, 70-85% of the capacity of the battery provided to the electric vehicle). , 19.2 kW of storage capacity) or less, and more than 5 milliohms (mohm).

In other embodiments, the ESS 30 is lower than the power range of the product in which secondary batteries are required, such as, for example, a golf electric cart, an industrial electric vehicle, an electric motorcycle, etc. in addition to the waste battery pack for electric vehicles. It may include a secondary battery such as a regenerative battery for electric mobility that cannot be used but can still be used in other products that require a lower output.

The independent solar lighting system 100 using the ESS of the present invention is a distribution box 40 configured to distribute power supplied from the ESS 30 to the light emitting units 14 of all lighting devices 10 in the module, respectively. ) is further provided.

In one embodiment, the distribution box 40 may also be referred to as a distribution board, for example, by using a CDMA communication method to communicate with the central control system, and thus, according to the control program of the central control system, CDMA via a mobile communication network. It may be configured to control and/or monitor each lighting device 10 via a control signal.

In addition, the distribution box 40 can be managed by dividing the lighting devices 10 by module, and/or by region and/or geographically by location information where the solar lighting system 100 is installed, and such A system may be designed to facilitate registration, deletion, or modification of location information. In this case, when a function for registering an administrator for each region/group and a function for setting an authority are provided, efficient management of the system 100 and/or the distribution box 40 is possible. In addition, the central control system may manage the distribution boxes 40 registered for each ID according to a group or individual control command created by a user.

Furthermore, the distribution box 40 can realize energy saving by changing the settings related to the distribution box 40 registered by the user accessing the web page provided from the control system in real time according to the user's needs.

The distribution box 40 has each lighting device 10 on/off time setting, dimming mode and dimming time setting, forced on/off function, a function to adjust the server connection interval, a function to change the operation mode, etc. is configured to perform In addition, the distribution box 40 may be configured to include a branch breaker trip monitoring function, a door open monitoring function, a branch breaker leakage monitoring function, and a function for notifying a power failure state.

In one embodiment, in order to exert the functions described above, the distribution box 40 is provided with a controller 50 . The controller 50 may be configured to process and control interface information between the solar cell panels 20 and the ESS 30 and/or interface information between the ESS 30 and the lighting devices 10 . .

The controller 50 is a maximum power point based on the generated power of the solar cell panel 20, the power consumption of the load by each light emitting unit 14 of the lighting devices 10, the predicted amount of power demand, etc. Tracking), and thus, for example, to PWM control an 8kW inverter, it may be composed of other controllers including, but not limited to, a 60A class MPPT controller.

In addition, the controller 50 may adjust the operation mode of the battery control at any time based on the generated power of the solar cell panels 20 , the power consumption of the lighting devices 10 , and the charging power of the ESS 30 . That is, when surplus power is generated or the charging power of the ESS 30 is less than or equal to a threshold value, the battery control is driven in the battery charging mode, and when insufficient power occurs, the battery control is driven to the battery discharging mode. In particular, it is equipped with a soft starter function to prevent sudden fluctuations during charging and discharging.

In addition, the controller 50 further includes a monitor (not shown) configured to identify all information collected and generated through the system 100 , and to inform the user about it audiovisually. The monitor is, for example, the energy production power of the solar cell panels 20, the power consumption of the lighting devices 10, such as the battery state of each of the waste battery packs, the amount of charging or discharging of each of the waste battery packs, such as the ESS ( 30), it is possible to visually and aurally guide the user by monitoring the operation mode. In addition, the monitor is configured to check whether a failure has occurred based on all information collected and generated through the system and to notify the user of this.

In addition, the controller 50 may further include a user input means (not shown), and through this, the operating environment of the system may be adjusted according to various control values manually input by the user. For example, it is possible to temporarily suspend the operation of the ESS 30 , forcibly change the operation mode of the ESS 30 , or set or change the predicted amount of power demand.

In one embodiment, the stand-alone solar lighting system 100 using the ESS of the present invention is a lighting device in the event of an emergency that cannot drive the lighting devices 10 when an error occurs in the ESS 30 or when the lighting devices 10 are completely discharged. It further includes a switch 60 configured to connect the 10 to the commercial power system 80 . This switch 60 can supply power to the light emitting part 14 of the lighting devices 10 through the distribution box 40 of the ESS 30 in a normal state, but the ESS 30 may fail or be completely discharged. In this case, the input of the distribution box 40 is manually or automatically switched to the commercial power system 80 . In this case, the system 100 further includes an inverter 70 for converting AC power of the commercial power system 80 into DC power.

In an embodiment, the distribution box 40 , the ESS 30 , and the solar cell panels 20 may be partitioned by, for example, a separate frame 90 to be protected from theft, damage, and the like.

The solar lighting system 100 using the ESS according to the present invention is a single ESS 30 located in a space away from the lighting devices 10 including a plurality (eg, 10) of street lights or security lights. ) and the solar cell panels 20 . In addition, the solar lighting system 100 using the ESS according to the present invention may be used to illuminate a number of lighting devices such as conventional street lights and security lights electrically connected to the conventional commercial power system 80, and commercial power It can be utilized in the case of installing new lighting devices 10 in an island area where the system 80 is not installed, a new bridge, a mountainous area, or the like.

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, and 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.

10...Lighting device 12...Pole
14...Light emitting part 20...Solar cell panel
30...ESS 40...Sunbox
50...controller 60...switch
70...inverter 80...commercial power grid
90...frame

Claims (10)

As an independent solar lighting system using ESS,
two or more lighting devices each including a pole installed on the ground and a light emitting unit provided at an end of the pole;
one or more solar cell panels installed on the ground to be spaced apart from the pole;
Independent using ESS, having an energy storage system (ESS) installed on the ground so as to be electrically connected to the solar panel to store the electrical energy produced from the solar panel and to supply power to the light emitting unit Solar lighting system.
In claim 1,
Independent solar lighting system using ESS, further comprising a distribution box configured to distribute the power supplied from the ESS to each of the two or more lighting devices.
In claim 2,
Independent solar power using ESS, the distribution box further comprising a controller configured to process and control interface information between the solar cell panels and the ESS and/or interface information between the ESS and the lighting devices lighting system.
In claim 1,
A standalone solar lighting system using an ESS, wherein the lighting devices include 2 to 10 poles and light emitting units.
In claim 1,
In the event of an error or complete discharge of the ESS, the independent solar lighting system using the ESS further comprising a switch configured to connect the lighting devices to a commercial power system.
In claim 5,
Independent solar lighting system using ESS, further comprising an inverter for converting AC power supplied from the commercial power system to DC.
In claim 5,
The two or more lighting devices are a standalone solar lighting system using an ESS, using a conventional street light or security light driven by the commercial power system.
In claim 1,
The ESS is an independent solar lighting system using an ESS, including a regenerative battery for electric mobility including a waste battery for an electric vehicle or a golf cart having a predetermined capacity.
In claim 1,
The solar panel is installed on top of the ESS, an independent solar lighting system using the ESS.
In claim 1,
The light emitting part of the lighting devices is a street light or a security light composed of LEDs, an independent solar lighting system using an ESS.

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