Direct-current driven biological light supplement lamp system with grid electricity energy storage function

Abstract

The invention discloses a direct-current driven biological light supplement lamp system with a grid electricity energy storage function, which comprises an electric power conversion system, an energy management system, a battery management system, an energy storage battery and a biological light supplement lamp assembly, the direct current side of the power conversion system is electrically connected with the energy storage battery and the biological light supplementing lamp assembly; the energy storage battery is electrically connected with the biological light supplementing lamp assembly; the battery management system is electrically connected with the energy storage battery and the power conversion system. The energy management system is electrically connected with the power conversion system and the battery management system. The system can utilize grid power and store energy, realizes energy saving and continuous and stable power supply, can support direct access of clean energy such as solar energy, reduces dependence on a traditional power grid, and realizes sustainable utilization of energy. Remote control can be realized through equipment such as an intelligent control panel or a mobile phone, operations such as on-off, dimming and the like of a lamp in the light supplementing lamp assembly can be easily realized, and the requirements of intelligent control and adjustment are met.

Description

Technical Field

[0001] This invention belongs to the field of biological supplemental lighting systems, specifically, it relates to a DC-driven biological supplemental lighting system with grid-connected power storage. Background Technology

[0002] Traditional bio-lighting lamps use 220V AC mains power directly, resulting in unsatisfactory energy-saving performance. With the development of clean energy, the application of renewable energy sources such as solar power in lighting systems is receiving increasing attention. Some bio-lighting lamps use power systems composed solely of solar panels and batteries, but these suffer from high overall costs and the inability to operate continuously for 24 hours. Conventional energy storage systems convert the battery's electricity into AC power, which then drives the bio-lighting lamp, adding an extra inversion step, reducing efficiency, and increasing costs. Bio-lighting lamps operate in humid or other special environments, and using AC power to drive them poses a risk of electric shock. Furthermore, AC power has weak interference resistance, leading to flickering due to voltage fluctuations. In addition, modern bio-lighting requires precise adjustment of parameters such as light intensity and color temperature according to the different growth stages and needs of different organisms.

[0003] Therefore, there is a need for a DC-driven biological supplemental lighting system that can utilize grid power, store energy, and utilize stored energy to achieve energy saving, continuous, stable, and safe power supply, reduce costs, and enable remote control to meet the needs of intelligent control and regulation.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a DC-driven biological supplementary lighting system with grid power energy storage. This system can utilize grid power, store energy, and utilize the stored energy to achieve energy saving, continuous, stable and safe power supply, reduce costs, and enable remote control to meet the needs of intelligent control and regulation.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] A DC-driven bio-lighting system with grid-connected power storage includes a power conversion system, an energy management system, a battery management system, an energy storage battery, and bio-lighting components.

[0008] The power conversion system can convert between AC and DC power. The DC side of the power conversion system is electrically connected to the energy storage battery and the bio-lighting lamp assembly; the energy storage battery is electrically connected to the bio-lighting lamp assembly.

[0009] The battery management system is electrically connected to both the energy storage battery and the power conversion system.

[0010] The energy management system is electrically connected to the power conversion system and the battery management system.

[0011] Furthermore, a DC-driven bio-lighting system with grid-connected energy storage utilizes energy storage batteries to store electrical energy and / or power the bio-lighting components during off-peak periods of grid electricity consumption, and during peak periods of grid electricity consumption, the energy storage batteries provide reverse power to the grid or directly drive the bio-lighting components.

[0012] Furthermore, the DC side of the power conversion system or the energy storage battery can be connected to the bio-lighting lamp assembly for power supply.

[0013] Furthermore, the bio-lighting lamp assembly integrates a DC-DC voltage regulator module with a wide voltage range.

[0014] Furthermore, the biological supplemental lighting assembly contains multiple supplemental lights forming several distributed DC sub-load units. The biological supplemental lighting assembly integrates communication functions and can control the shutdown timing of each sub-load unit.

[0015] Furthermore, each distributed DC sub-load unit is equipped with an independent current detection and fault isolation module.

[0016] Furthermore, the DC-driven biological supplemental lighting system with grid-connected energy storage also includes a photosynthetically active radiation sensor and a grid load monitoring module. When the photosynthetically active radiation value is detected to be lower than the plant's requirement threshold and the grid is in a low-lying period, the power conversion system is activated first to store energy in the energy storage battery and simultaneously drive the biological supplemental lighting components. When the grid is in a high-lying period and the energy storage battery has sufficient power, the system automatically switches to a mode where the energy storage battery directly powers the biological supplemental lighting components or feeds power to the grid.

[0017] Furthermore, an energy balancing circuit is installed on the DC side of the power conversion system.

[0018] Furthermore, when a power outage is detected, the system automatically switches to off-grid mode, where the energy storage battery directly supplies power to the key photonic load unit while cutting off unnecessary loads; when the power grid is restored, the system automatically detects the grid quality and smoothly switches back to grid-connected mode.

[0019] Furthermore, the bio-lighting lamp assembly integrates a wide-voltage DC-DC regulator module with a voltage range of DC350V-DC1000V, preferably DC650V-850V. When a boost is required, a forward hard-switching half-bridge boost circuit or a forward single-transistor boost circuit is used; when a buck is required, a BUCK buck circuit solution is used.

[0020] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0021] This invention relates to a DC-driven biological supplemental lighting system with grid-connected power storage. It utilizes grid power and stores energy, achieving energy conservation and a continuous, stable power supply. It supports direct access to clean energy sources such as solar power, reducing dependence on the traditional power grid and enabling sustainable energy use. The DC-driven biological supplemental lighting components are suitable for humid and other special environments, exhibiting strong anti-interference capabilities and reducing flickering caused by voltage fluctuations, thus improving lighting comfort. Furthermore, DC lighting eliminates the need for the existing energy storage battery to first convert DC to AC before performing AC-DC conversion to drive the supplemental lighting components, reducing transmission losses. This system can be remotely controlled via a smart control panel or mobile phone, easily enabling on / off and dimming operations of the lights within the supplemental lighting components, meeting the needs of intelligent control and adjustment.

[0022] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0024] Figure 1 This is a schematic diagram of the DC-driven biological supplementary lighting system with grid-connected energy storage connected to the power grid according to the present invention.

[0025] Figure 2 This is a schematic diagram of the DC-driven biological supplementary lighting system with grid-connected energy storage of the present invention connected in the power grid; wherein, the dashed line is the control line, which is implemented as a transmission line;

[0026] Figure 3 This is a circuit diagram of the supplemental lighting component in a DC-driven biological supplemental lighting system with grid-connected energy storage according to the present invention.

[0027] Figure 4 This invention uses a forward-type hard-switching half-bridge boost converter circuit.

[0028] Figure 5 This invention uses a forward converter single-transistor boost circuit.

[0029] Figure 6 This is a circuit diagram of the supplemental lighting component in a DC-driven biological supplemental lighting system with grid-connected energy storage, which adopts the BUCK step-down scheme.

[0030] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The present invention discloses a DC-driven bio-lighting system with grid-connected energy storage, comprising an energy storage battery, a bio-lighting component, a power conversion system (PCS), an energy management system (EMS), and a battery management system (BMS).

[0035] The power conversion system can convert between alternating current (AC) and direct current (DC). Therefore, the power conversion system is divided into an AC side and a DC side. The AC side is used to input or output AC power, and the DC side is used to input or output DC power. The AC side of the power conversion system is connected to the power grid, and the DC side is electrically connected to the energy storage battery and the bio-lighting lamp assembly, respectively; the energy storage battery is electrically connected to the bio-lighting lamp assembly.

[0036] The energy management system is electrically connected to both the power conversion system and the battery management system, and the battery management system is electrically connected to both the energy storage battery and the power conversion system. The energy storage battery feeds back its status information to the battery management system, which then shares this information with both the energy management system and the power conversion system. Based on optimization and scheduling decisions, the energy management system sends control information to both the power conversion system and the battery management system to control the energy storage battery to complete charging and discharging processes.

[0037] When a power conversion system converts alternating current (AC) to direct current (DC), AC power is input to the AC side of the system, and DC power is output to the DC side. Conversely, when a power conversion system inverts DC power to AC, DC power is input to the DC side of the system, and AC power is output to the AC side.

[0038] In this invention, the AC side of the power conversion system is connected to the AC power grid, and the DC side of the power conversion system is electrically connected to the energy storage battery and the bio-lighting lamp assembly, respectively. When the power conversion system converts AC to DC, the AC side of the power conversion system receives AC power from the grid, and the DC power output from the DC side of the power conversion system charges the energy storage battery and / or powers the bio-lighting lamp assembly. Alternatively, when the power conversion system converts DC to AC, the energy storage battery inputs its stored electrical energy into the DC side of the power conversion system, and then the AC side of the power conversion system converts it into AC power for output to the grid.

[0039] Since the DC side of the power conversion system is electrically connected to both the energy storage battery and the bio-lighting lamp assembly, and the energy storage battery is also electrically connected to the bio-lighting lamp assembly, there are two ways to drive the bio-lighting lamp assembly with DC power. The first way is to convert AC grid power into DC power through the power conversion system and output it directly to the bio-lighting lamp assembly via the DC side. The second way is to directly power the bio-lighting lamp assembly with DC power from the energy storage battery. One of the two power supply methods must be used.

[0040] This invention relates to a DC-driven biological supplemental lighting system with grid-connected energy storage. It integrates a photosynthetically active radiation (PAR) sensor and a grid load monitoring module, enabling real-time acquisition of light intensity required for plant growth stages, real-time grid load, and electricity price information. The system automatically switches power supply modes via a built-in algorithm. For example, when the PAR value is detected to be below the plant's requirement threshold and the grid is in a low-lying period, the power conversion system is prioritized to store energy in the energy storage battery, simultaneously driving the biological supplemental lighting components. When the grid is in a high-lying period and the energy storage battery has sufficient power, the system automatically switches to a mode where the energy storage battery directly powers the biological supplemental lighting components or feeds power to the grid, achieving dynamic optimal control of the "photovoltaic-storage-grid" synergy.

[0041] Because the DC voltage of the energy storage battery itself fluctuates greatly, it usually cannot directly drive DC loads. The bio-lighting lamp component in this system integrates a DC-DC voltage regulator module with a wide voltage range, namely DC-DC voltage regulator module, with a voltage range of DC350V-DC1000V (preferably DC650V-850V), eliminating the need for the conventional DC-DC voltage regulator module at the energy storage battery end.

[0042] In this invention, energy storage batteries are combined with bio-lighting. During off-peak hours, the batteries can store electrical energy, while during peak hours, they can either feed power back to the grid or directly drive the bio-lighting components. This leverages the peak-valley electricity price difference to reduce overall system operating costs. Since the energy storage batteries directly power the bio-lighting components with DC, there is no need to convert the DC to AC, eliminating inverter efficiency loss. Furthermore, the bio-lighting components themselves do not require AC-DC conversion, effectively reducing system hardware costs. In contrast, conventional energy storage systems convert battery power to AC, which then drives the bio-lighting components, adding an extra inverter step. Additionally, the bio-lighting components themselves require AC-DC conversion, resulting in efficiency losses and increased costs.

[0043] This invention relates to a DC-driven bio-lighting lamp system with grid-connected energy storage. The load end, i.e., the bio-lighting lamp assembly, is located on the DC side of the power conversion system. When using energy from the energy storage battery, the power conversion system does not need to operate off-grid; the energy storage battery directly drives the bio-lighting lamp assembly. In grid-connected mode, the energy storage battery can store energy, and the power conversion system directly drives the DC bio-lighting lamp assembly. Alternatively, the power conversion system can simultaneously store energy and drive the bio-lighting lamp assembly, with the energy storage battery directly driving the bio-lighting lamp assembly. This eliminates the need for grid-connected and off-grid switching functions required by conventional energy storage systems, reducing the functional requirements of the power conversion system, making the system more reliable and lower in cost.

[0044] The present invention relates to a DC-driven bio-lighting system with grid-connected power storage. The load end, i.e., the bio-lighting assembly, comprises multiple lights, each acting as a small DC load, forming several distributed DC sub-load units. The load end integrates RS 485 / CAN communication functionality, allowing independent shutdown of each sub-load unit. Software control of the shutdown sequence of each sub-load unit effectively avoids the arcing problem caused by directly shutting down high-power DC loads, ensuring normal operation and safe power consumption within the system.

[0045] Each distributed DC sub-load unit is equipped with an independent current detection and fault isolation module: when a single sub-load unit experiences a short circuit, overload, or other fault, the system can identify the faulty unit in real time and quickly isolate it through RS 485 / CAN communication without affecting the normal operation of other sub-load units; at the same time, the DC side of the power conversion system is equipped with an energy balancing circuit, which can dynamically allocate the energy output of the energy storage battery and each sub-load unit, avoiding the lifespan degradation of some sub-load units due to long-term high-load operation, thereby increasing the load balance of the entire supplementary lighting system to over 90% and extending the overall service life of the system.

[0046] This system, in addition to its ability to store energy from the energy storage battery and directly power the biological supplemental lighting components without switching while connected to the grid, also features an intelligent activation function for off-grid emergency mode. When a sudden power outage occurs, the system automatically switches to off-grid mode via a voltage surge detection module (response time ≤ 50ms). At this time, the energy storage battery directly powers the key supplemental lighting sub-load units (such as the sub-load units of the biological supplemental lighting components that provide supplemental lighting to the core area during the seedling stage) through a wide-voltage DC-DC voltage regulator module, while cutting off unnecessary loads. After the grid power supply is restored, the system automatically detects the grid quality and smoothly switches back to grid-connected mode without manual intervention, avoiding the defects of conventional systems such as "slow off-grid switching and unstable emergency power supply," and meeting the rigid demand for "uninterrupted supplemental lighting" in agricultural production.

[0047] This system increases the driving voltage at the load end and significantly reduces the driving current under the same power conditions, thereby reducing wiring requirements in plant supplemental lighting applications and significantly improving economic benefits.

[0048] like Figure 1As shown, 35 / 110 / 220 / 500KV high-voltage electricity is transmitted to a substation via transmission lines, stepped down to 10 / 20KV, and then transmitted through lines. After being stepped down to 400V or 690V by a transformer, it is sent out by the power grid. The AC side of the power conversion system PCS is connected to the power grid line after the transformer step-down, and the DC side of the power conversion system PCS is connected to the energy storage battery, the bio-lighting lamp assembly, and can also be connected to a photovoltaic power generation device. The photovoltaic power generation device can supply power to the energy storage battery or feed power to the grid. The power conversion system PCS is also connected to the energy management system EMS and the battery management system BMS, forming the DC-driven bio-lighting lamp system with grid power storage in this invention, serving as an industrial and commercial energy storage and supplementary lighting system. As a solution to enrich the power grid feed and energy storage options, in parallel, boiler energy storage devices can be connected to the substation-stepped lines via transformer control devices, wind power generation devices can be connected to the substation-stepped lines, and other energy storage batteries can be connected to the substation-stepped lines via power conversion systems (PCS) and transformers (and the PCS is also connected to the energy management system (EMS) and battery management system (BMS), which in turn connect to the energy storage batteries). This forms a large-scale energy storage system. Depending on their nature, these parallel devices can form energy storage terminals for energy storage or feed power to the grid.

[0049] like Figure 2 As shown, the Energy Management System (EMS) is remotely controlled via a cloud platform. The EMS controls the Power Conversion System (PCS), the DC-DC transformer in the supplemental lighting assembly, and the DC-DC transformer in the photovoltaic power generation device. Figure 2 As shown, 10KV / 35KV AC power is stepped down to 400V AC power by a transformer, and then converted into DC power by a power conversion system (PCS) to supply power to various DC loads via a DC bus. The photovoltaic power generation device is also connected to this DC bus and can input electrical energy in reverse to supply power to the grid. The energy storage batteries in the battery cabinet can store energy from the DC bus or supply electrical energy to the DC bus.

[0050] A power conversion system PCS, supplementary lighting components, photovoltaic power generation devices, battery cabinets with energy storage batteries, DC charging piles, and other DC loads form a unit. N such units can be connected in parallel. In each unit, there can be N supplementary lighting components (N represents any number).

[0051] In other embodiments, depending on actual needs, each unit can select and retain suitable devices from the supplementary lighting assembly, photovoltaic power generation device, battery cabinet with energy storage battery, DC charging pile, and other DC loads, while removing other unnecessary devices. For example, each unit may only retain the supplementary lighting assembly, photovoltaic power generation device, and battery cabinet with energy storage battery. However, to meet the objectives of this invention, it is necessary to retain the supplementary lighting assembly and the battery cabinet with energy storage battery. The battery cabinet with energy storage battery described in this invention is actually an energy storage battery with a battery cabinet. In some embodiments, even if there is only an energy storage battery without a battery cabinet, the objectives of this invention can still be achieved, and this falls within the scope of protection of this invention.

[0052] Regarding the issue of inconsistent voltages in the transmission lines shown in the attached diagram, this is merely an example illustrating how voltage values ​​can be used. When the voltage is higher than the voltage required by the load, a transformer is used to step down the voltage; when the voltage is lower than the voltage required by the load, a transformer is used to step up the voltage. The goal is simply to achieve the objectives of this invention. A transformer includes both a step-up transformer and a step-down transformer.

[0053] As mentioned above, due to the large DC voltage fluctuation range of the energy storage battery itself, it usually cannot directly drive DC loads. Therefore, the bio-lighting lamp component in this system integrates a DC-DC voltage regulator module with a wide voltage range, applicable to DC 350V-DC 1000V (preferably DC 650V-850V). Figure 3 As shown, multiple (e.g., N) fill light assemblies are set up. Correspondingly, each fill light assembly has a fill light driving circuit (i.e., lamp board driver) and a fill light (i.e., lamp board). Each fill light driving circuit is connected to the DC bus and provides a stable voltage to drive the corresponding fill light so that it can work.

[0054] The following supplemental lighting drive circuit is configured in the biological supplemental lighting assembly:

[0055] The following explanation uses a DC bus providing 350-390V DC power as an example.

[0056] The positive and negative DC busbars are connected to the positive and negative terminals of the drive circuit, respectively. The circuit passes through a parallel protection branch consisting of an adjustable resistor, a switch, and a thermistor, and is then filtered by a parallel capacitor to achieve input filtering and protection.

[0057] An isolation transformer is then connected in parallel with the above circuit, followed by multiple sets of capacitors for further filtering, achieving isolation and preprocessing.

[0058] The pre-processed circuit is connected in parallel to a "DC-DC boost converter unit." This boost converter unit can be a forward-type hard-switching half-bridge boost converter or a forward-type single-transistor boost converter, as described later. The DC-DC boost converter unit can achieve wide-range voltage regulation. For example, when the DC bus output voltage is 350-390V DC, in order to provide 400V / 2.5A DC power to the fill light, the DC-DC boost converter unit can achieve a wide-range voltage regulation of 1-50V, so that the voltage output from the fill light driver circuit to the fill light is 400V and the current is 2.5A.

[0059] The DC-DC boost converter unit output is filtered by a parallel capacitor, then connected to a switch and resistor, then to an isolation transformer, and finally output to the positive and negative terminals of the fill light (i.e., the lamp board).

[0060] Each fill light (i.e., light panel) may include multiple LEDs connected in series.

[0061] like Figure 4 As shown, the first type of DC-DC boost converter is a forward-type hard-switching half-bridge boost converter.

[0062] Two voltage-dividing capacitors, C11 and C12, are connected in series. Two field-effect transistors, Q11 and Q12, are connected in series and in parallel with the two voltage-dividing capacitors C11 and C12. One end of the primary winding of the high-frequency transformer is connected to the circuit between the two voltage-dividing capacitors C11 and C12. A capacitor is also installed in the circuit at one end of the primary winding of the high-frequency transformer; the other end is connected to the circuit between the two field-effect transistors Q11 and Q12. Two diodes, D11 and D12, are installed on the secondary side of the high-frequency transformer to form a rectifier unit. The secondary winding of the high-frequency transformer consists of a primary winding and a secondary winding. After the primary winding is connected to diode D11, an inductor and capacitor C13 are connected in series in sequence. The inductor and capacitor C13 form an output filter unit. After the secondary winding is connected to diode D12, the inductor and capacitor C13 are connected in sequence in the same way.

[0063] Two voltage-dividing capacitors, C11 and C12, are connected in series to filter the input DC voltage. Simultaneously, they provide a symmetrical voltage divider for the half-bridge switching unit formed by two MOSFETs connected in series, splitting the input DC voltage into two equal paths and stabilizing the half-bridge "midpoint" voltage at approximately half the input voltage. MOSFETs Q11 and Q12 alternately conduct, inverting the DC voltage into a high-frequency square wave to drive the subsequent high-frequency transformer. When MOSFET Q11 is on and Q12 is off, the primary winding of the high-frequency transformer receives voltage from capacitor C11 and MOSFET Q11; when MOSFET Q12 is on and Q11 is off, the primary winding of the high-frequency transformer receives voltage from capacitor C12 and MOSFET Q12. Through this alternating high-frequency switching, a high-frequency square wave voltage is generated in the primary winding of the high-frequency transformer, achieving the "DC to high-frequency AC" conversion. The high-frequency transformer achieves electrical isolation and voltage boosting. The rectifier unit rectifies the high-frequency AC voltage of the transformer secondary into a unidirectional pulsating DC voltage. The output filter unit formed by the inductor and capacitor C13 filters the rectified pulsating DC voltage into a smooth DC voltage.

[0064] Capacitors C11, C12, and C13 are all electrolytic capacitors.

[0065] The above forward-type hard-switching half-bridge boost converter circuit realizes the DC-DC boost function. It has a relatively simple structure, low cost, wide voltage regulation range, high efficiency, low output ripple, and good dynamic response.

[0066] like Figure 5 As shown, the second type of DC-DC boost converter is a forward single-tube boost converter.

[0067] Capacitor C23 is connected in parallel with a resistor, then in series with diode D21. This entire assembly is then connected in parallel with the primary winding of the high-frequency transformer, and finally in series with capacitors C21 and C22, and MOSFET Q21. One end of the secondary winding of the high-frequency transformer is connected sequentially to diode D22, inductor, and capacitor C24 before being connected to the other end of the secondary winding. One end of diode D23 is connected between diode D22 and the inductor, and the other end is connected to the other end of the secondary winding of the high-frequency transformer. The polarities of diodes D23 and D22 are the same. After the input voltage is filtered by the input electrolytic capacitors C21 and C22, MOSFET Q21 is switched on / off at high frequency (hard switching mode) under the control signal, inverting the DC voltage into a high-frequency square wave voltage to drive the primary side of the high-frequency transformer. The high-frequency AC voltage on the secondary side of the high-frequency transformer is rectified by rectifier diodes into a unidirectional pulsating DC voltage. This pulsating DC voltage is then filtered by an LC filter circuit composed of a filter inductor and output electrolytic capacitor C24, ultimately outputting a smooth and stable DC voltage to supply the load. Using this forward-type single-tube DC-DC boost converter, the cost is lower than that of a half-bridge boost converter, and the dynamic adjustment and loop response are superior to those of the flyback type.

[0068] Either of the above two DC-DC boost converters can be used in... Figure 3 The DC-DC boost converter unit enables wide-range voltage regulation.

[0069] like Figure 6 As shown, in other embodiments, the biological supplemental lighting assembly includes a supplemental lighting drive circuit to provide a stable voltage, wherein a BUCK step-down circuit is used as a step-down converter to adapt to a wide range of supplemental lighting (i.e., lamp board) voltages. An example is provided by a DC bus supplying 640-760V DC power.

[0070] The positive and negative DC busbars are connected to the positive and negative terminals of the drive circuit, respectively. The circuit passes through a parallel protection branch consisting of an adjustable resistor, a switch, and a thermistor, and is then filtered by a parallel capacitor to achieve input filtering and protection.

[0071] An isolation transformer is then connected in parallel with the above circuit, followed by multiple sets of capacitors for further filtering, achieving isolation and preprocessing.

[0072] The pre-processed circuit is connected in series with a field-effect transistor, then in parallel with a diode and a capacitor for filtering, then connected with a switch and a resistor, then connected with an isolation transformer, and finally output to the positive and negative terminals of the fill light (i.e., the lamp board).

[0073] For example, when the DC bus output voltage is 640-760V DC, a wide range of voltage regulation can be achieved, so that the voltage output from the fill light drive circuit to the fill light is 100-500V and the current is 2.5A, which is compatible with a wide range of fill light (i.e., lamp board) voltages.

[0074] This invention relates to a DC-driven biological supplemental lighting system with grid-connected power storage. It utilizes grid power and stores energy, achieving energy conservation and a continuous, stable power supply. It supports direct access to clean energy sources such as solar power, reducing dependence on the traditional power grid and enabling sustainable energy use. The DC-driven biological supplemental lighting components are suitable for humid and other special environments, exhibiting strong anti-interference capabilities and reducing flickering caused by voltage fluctuations, thus improving lighting comfort. Furthermore, DC lighting eliminates the need for the existing energy storage battery to first convert DC to AC before performing AC-DC conversion to drive the supplemental lighting components, reducing transmission losses. This system can be remotely controlled via a smart control panel or mobile phone, easily enabling on / off and dimming operations of the lights within the supplemental lighting components, meeting the needs of intelligent control and adjustment.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A DC-driven biological supplemental lighting system with grid-connected power storage, characterized in that: This includes power conversion systems, energy management systems, battery management systems, energy storage batteries, and bio-lighting components. The power conversion system can convert between AC and DC power. The DC side of the power conversion system is electrically connected to the energy storage battery and the bio-lighting lamp assembly; the energy storage battery is electrically connected to the bio-lighting lamp assembly. The battery management system is electrically connected to both the energy storage battery and the power conversion system. The energy management system is electrically connected to the power conversion system and the battery management system.

2. The DC-driven biological supplemental lighting system with grid-connected energy storage according to claim 1, characterized in that: During periods of low electricity demand, energy storage batteries are used to store electrical energy and / or power the bio-lighting lamp components. During periods of high electricity demand, the energy storage batteries can either feed back power to the grid or directly drive the bio-lighting lamp components.

3. A DC-driven biological supplemental lighting system with grid-connected power storage according to claim 2, characterized in that: The DC side of the power conversion system or the energy storage battery can be connected to the biological supplemental lighting component for power supply.

4. A DC-driven biological supplemental lighting system with grid-connected energy storage according to any one of claims 1-3, characterized in that: The biological supplemental lighting assembly integrates a DC-DC voltage regulator module with a wide voltage range.

5. A DC-driven biological supplemental lighting system with grid-connected energy storage according to claim 4, characterized in that: The biological supplemental lighting assembly contains multiple supplemental lights forming several distributed DC sub-load units. The biological supplemental lighting assembly integrates communication functions and can control the shutdown timing of each sub-load unit.

6. A DC-driven biological supplemental lighting system with grid-connected energy storage according to claim 5, characterized in that: Each distributed DC sub-load unit is equipped with an independent current detection and fault isolation module.

7. A DC-driven biological supplemental lighting system with grid-connected energy storage according to claim 6, characterized in that: It also includes a photosynthetically active radiation sensor and a power grid load monitoring module. When the photosynthetically active radiation value is detected to be lower than the plant's demand threshold and the power grid is in a valley period, the power conversion system is activated first to store energy in the energy storage battery and drive the biological supplemental lighting component at the same time. When the power grid is in a peak period and the energy storage battery has sufficient power, it automatically switches to the mode of directly powering the biological supplemental lighting component with the energy storage battery or feeding power to the power grid.

8. A DC-driven biological supplemental lighting system with grid-connected energy storage according to claim 7, characterized in that: An energy balancing circuit is installed on the DC side of the power conversion system.

9. A DC-driven biological supplemental lighting system with grid-connected energy storage according to claim 8, characterized in that: When a power outage is detected, the system automatically switches to off-grid mode, where the energy storage battery directly supplies power to the key photonic load unit while cutting off unnecessary loads. When the power grid is restored, the system automatically detects the grid quality and smoothly switches back to grid-connected mode.

10. A DC-driven biological supplemental lighting system with grid-connected energy storage according to claim 4, characterized in that: The applicable voltage range is DC350V-DC1000V, preferably DC650V-850V; when a boost is required, a forward hard-switching half-bridge boost circuit or a forward single-transistor boost circuit is used; when a buck is required, a BUCK buck circuit is used.

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