Offshore buoy dual-power-supply hot standby system and control method thereof

Through the mutual switching and control mode of the dual-power hot backup system and solar photovoltaic panels, the problems of unstable power supply and short battery life of traditional offshore buoy equipment are solved, and the stability of offshore buoy equipment is achieved, long-term healthy power supply and extended battery life of offshore buoy equipment are achieved.

CN119209862APending Publication Date: 2024-12-27SHANGHAI OCEAN UNIV
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Patent Information

Application Number
CN202411313380.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-20
Publication Date
2024-12-27

AI Technical Summary

Technical Problem

The power supply system of traditional offshore buoy equipment cannot provide long-term and stable power supply, and cannot supply power in rainy weather and nights, the battery life is short, the load cannot be controlled, and there is no other supplementary power supply after the solar panel fails, resulting in the equipment losing its purpose.

Method used

The dual power hot backup system is adopted, and the power is supplied to each other through the switching between two battery units and the charging is carried out using solar photovoltaic panels to ensure the uninterrupted operation of the battery unit and provide preset and managed control modes to adapt to different environmental conditions.

Benefits of technology

It realizes stable and long-term and healthy power supply of offshore buoy equipment, extends battery life, and avoids equipment loss when the battery fails, ensuring continuous monitoring tasks.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides an offshore buoy dual-power-supply hot standby system and a control method thereof.The system comprises a solar photovoltaic panel, a control mainboard and a battery pack which are arranged in an offshore buoy, the control mainboard is electrically connected with the solar photovoltaic panel and the battery pack, and the battery pack comprises a first battery unit and a second battery unit; the first battery unit and the second battery unit are respectively and independently connected to the control mainboard and are controlled by the control mainboard, when the first battery unit supplies power to the load, the second battery unit is continuously charged through the solar photovoltaic panel, and when the electric quantity of the first battery unit is consumed to a set minimum threshold value, the second battery unit is automatically switched to supply power to the load; and the solar photovoltaic panel is switched to charge the first battery unit, so that continuous operation between the two battery units of the battery pack is realized. According to the invention, two groups of battery units are used for mutual hot standby switching control, so that a stable and healthy offshore buoy power supply system is achieved.
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Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and in particular to a dual-power supply hot standby system for an offshore buoy and a control method thereof. Background Art

[0002] The ever-increasing demand for marine resources has driven the rapid development of many fields such as marine environmental monitoring, marine fisheries, mariculture and marine scientific research. These activities often rely on buoy equipment for data collection and monitoring. Since buoys are usually deployed far away from the coastline, they operate in the vast ocean and face a key problem: the complexity and ever-changing characteristics of the marine environment make manual maintenance and power replenishment very difficult. Considering this challenge, offshore buoy equipment must be equipped with a self-sufficient power system that can provide long-term and stable power supply to ensure that the buoy equipment can continue to effectively perform its monitoring tasks.

[0003] However, the traditional solution for powering offshore buoys is composed of solar panels and a single battery. A solar panel is installed on the upper surface of the float and connected to the power control board in the buoy compartment. The power control board is connected to the battery pack to control the charging and discharging of the battery pack. The traditional power supply method for buoy equipment has the following disadvantages:

[0004] 1. The battery cannot provide continuous power. Generally, the power of the solar panel of the buoy equipment is limited, and the charging speed is much slower than the battery discharge speed, until the power is exhausted and the equipment operation is interrupted.

[0005] 2. The battery life is short. The power supply may be fully charged before the buoy equipment is deployed, but it is always in a discharging state after deployment. As long as it is in working condition, solar energy supplementation can never fully charge the battery. The battery is in an uncharged state for a long time, which eventually shortens the battery life.

[0006] 3. The power supply will not continue in rainy weather and at night. When the power supply is exhausted, there is no solar cell to replenish it and the equipment will lose power.

[0007] 4. Unable to provide stable power supply. The offshore environment is relatively complex, especially the temperature has a greater impact on the battery. When the battery fails, the equipment will be completely useless without other power supply sources.

[0008] 5. The load power supply cannot be controlled. The position of the buoy at sea is constantly changing. The changing patterns of solar radiation at different longitudes and latitudes are different. Different inclination angles also affect the power supply performance of photovoltaic modules. When the output power of photovoltaic modules is low due to the influence of the irradiation amplitude, the buoy equipment load is still outputting electrical energy at a high power, which will soon cause the power supply to be exhausted and even out of power.

[0009] 6. When the solar panel fails, the entire power supply system will have no other source of supplementary power and the equipment will be unusable. Summary of the invention

[0010] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a dual-power hot standby system for an offshore buoy and a control method thereof. The present invention uses two groups of battery units to perform mutual hot standby switching control, thereby achieving a stable and long-term healthy power supply system for the equipment.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A dual-power hot standby system for an offshore buoy includes a solar photovoltaic panel, a control mainboard and a battery pack arranged inside the offshore buoy, wherein the control mainboard is electrically connected to the solar photovoltaic panel and the battery pack, and the battery pack includes a first battery unit and a second battery unit, which are independently connected to the control mainboard and controlled by the control mainboard, wherein when the first battery unit is supplying power to a load, the second battery unit is continuously charged by the solar photovoltaic panel, and when the power of the first battery unit is consumed to a set minimum threshold, it automatically switches to the second battery unit to supply power to the load, and the solar photovoltaic panel will switch to charging the first battery unit, thereby enabling uninterrupted operation between the two battery units of the battery pack in the offshore buoy.

[0013] Preferably, the solar photovoltaic panel includes a positioning module and a plurality of photovoltaic panel units, the plurality of photovoltaic panel units are divided into two groups, the photovoltaic panel units in a group are connected in series and then the two groups are connected in parallel, thereby avoiding the entire solar photovoltaic panel from failing due to a failure of a photovoltaic panel unit.

[0014] Preferably, the control main board includes a communication module connected to the positioning module and a main control MCU, and the main control MCU is used to control the first battery unit and the second battery unit.

[0015] Preferably, the control main board is also provided with a first connection unit connected to the solar photovoltaic panel and a second connection unit connected to the battery pack.

[0016] Preferably, when the first battery unit is supplying power to the load, the second battery unit is continuously charged by the solar photovoltaic panel, and when the discharge speed of the first battery unit is lower than the charging speed of the second battery unit, the second battery unit will eventually be fully charged; when the second battery unit is supplying power to the load, and its discharge speed is lower than the charging speed of the first battery unit, the first battery unit will also eventually be fully charged.

[0017] Preferably, the offshore buoy dual power hot standby system includes two control modes. The first is a preset mode, that is, the load working mode is pre-set, and when any problem occurs in the power supply system, it is executed according to the preset mode; the second is a trusteeship control mode, which generates a trusteeship control model according to weather conditions and regular sunshine conditions at the latitude of the buoy, and automatically adjusts the charging and load power supply intervals, that is, in continuous rainy weather, the load power supply interval is automatically extended to achieve power saving mode; according to the location information and season information of the positioning module on the solar photovoltaic panel, it is associated with the conversion power efficiency coefficient of the solar panel to change the load power supply interval, thereby ensuring that the backup battery has enough time to be fully charged.

[0018] Preferably, when the voltage of any battery unit is lower than a preset fault threshold, solar charging is changed to single power charging to avoid the problem of the device being unusable after a power failure.

[0019] Furthermore, the present invention also provides a control method for a dual power supply hot standby system for an offshore buoy, comprising the following steps:

[0020] A solar photovoltaic panel, a control mainboard and two groups of battery units are arranged inside the offshore buoy, and the solar photovoltaic panel and the two groups of battery units are connected via the control mainboard;

[0021] When the first battery unit in the two battery units is supplying power to the load, the second battery unit is continuously charged by the solar photovoltaic panel. When the power of the first battery unit is consumed to the set minimum threshold, it will automatically switch to the second battery unit to supply power to the load, and the solar photovoltaic panel will switch to charging the first battery unit.

[0022] When the voltage of any battery unit is lower than the preset fault threshold, solar charging is changed to single power charging to avoid the problem of equipment being unusable after power failure.

[0023] Compared with the prior art, the present invention uses two groups of battery cells for mutual hot standby switching control. When the first battery cell is supplying power, the second battery cell is continuously supplied by solar energy. When the discharge speed of the first battery cell is lower than the charging speed of the second battery cell, the second battery cell will eventually be fully charged; when the second battery cell is supplying power, its discharge speed is lower than the charging speed of the first battery cell, the first battery cell will eventually be fully charged. This is a healthy cycle. The battery can be fully charged at each stage, thereby extending the battery life and achieving a stable, long-term and healthy power supply system for the equipment. In addition, when any battery fails, that is, if its voltage is lower than the preset fault threshold, solar charging is changed to single-power charging, thereby avoiding the problem of the equipment being unusable after a power failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 It is a schematic diagram of the offshore buoy structure with a dual power supply hot standby system;

[0026] Figure 2 This is a schematic diagram of the structure of the dual power supply hot standby system for offshore buoys of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of a solar photovoltaic panel;

[0028] Figure 4 This is a schematic diagram of the structure of the control mainboard;

[0029] Figure 5 is a schematic diagram of the structure of a battery pack;

[0030] Figure 6 It is a schematic diagram of electrical connection of the dual power supply hot standby system for offshore buoys of the present invention;

[0031] Figure 7 This is a flowchart of the control method of the dual power supply hot standby system for offshore buoys of the present invention. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0033] Specifically, Figures 1 to 6 As shown, the dual power hot standby system for an offshore buoy of the present invention includes a solar photovoltaic panel 1, a control mainboard 2 and a battery pack 3 arranged inside the offshore buoy, and the control mainboard 2 is electrically connected to the solar photovoltaic panel 1 and the battery pack 3.

[0034] The solar photovoltaic panel 1 includes a positioning module arranged in the middle of the photovoltaic panel and a plurality of photovoltaic panel units arranged around it. The plurality of photovoltaic panel units are divided into two groups. The photovoltaic panel units in a group are connected in series and then the two groups are connected in parallel, thereby preventing all failures of the solar photovoltaic panel caused by a failure of a photovoltaic panel unit.

[0035] The control mainboard 2 includes a communication module and a main control MCU connected to the positioning module. In addition, the control mainboard 2 also includes a first connection unit connected to the solar photovoltaic panel and a second connection unit connected to the battery pack.

[0036] The battery pack 3 includes two groups of battery units, namely the first battery unit and the second battery unit, which are independently connected to the control main board 2 and controlled by the main control MCU of the control main board 2. When the first battery unit is supplying power to the load, the second battery unit is continuously charged by the solar photovoltaic panel. When the power of the first battery unit is consumed to the set minimum threshold, it automatically switches to the second battery unit to supply power to the load. At this time, the solar photovoltaic panel will switch to charging the first battery unit, so that the two groups of battery units of the battery pack in the offshore buoy can operate uninterruptedly.

[0037] The present invention uses two groups of battery cells to perform hot standby switching control with each other, so as to achieve a stable, long-term and healthy power supply system for the equipment. When the first battery cell is supplying power to the load, the second battery cell is continuously charged by the solar photovoltaic panel. When the discharge speed of the first battery cell is lower than the charging speed of the second battery cell, the second battery cell will eventually be fully charged. Similarly, when the discharge speed of the second battery cell is lower than the charging speed of the first battery cell when supplying power to the load, the first battery cell will also eventually be fully charged. Therefore, the battery can be fully charged at each stage, thereby extending the battery life.

[0038] In addition, the offshore buoy dual power hot standby system of the present invention also includes two control modes. The first is a preset mode, that is, the load working mode is pre-set, and when any problem occurs in the power supply system, it is executed according to the preset mode; the second is a trusteeship control mode (built-in control model), which generates a trusteeship control model according to weather conditions and the regular sunshine conditions at the latitude of the buoy, and automatically adjusts the charging and load power supply intervals, that is, 1) in continuous rainy weather, the load power supply interval is automatically extended to achieve power saving mode, 2) according to the position (latitude) information and season information of the positioning module on the solar photovoltaic panel, it is associated with the conversion power efficiency coefficient of the solar panel to change the load power supply interval, specifically, with the Tropic of Cancer and the Tropic of Capricorn (latitude 23°26′) as the center latitude, after departing from this Tropic of Capricorn, the power supply coefficient of the solar photovoltaic panel gradually decreases, and the load power supply interval increases to ensure that the backup battery has enough time to be fully charged.

[0039] Furthermore, if any battery unit fails, that is, its voltage is lower than a preset fault threshold, the present invention changes solar charging to single-power charging, thereby avoiding the problem of the device being unusable after a power failure.

[0040] Furthermore, if Figure 7 As shown, the present invention also provides a control method for a dual power hot standby system for an offshore buoy, the method comprising the following steps:

[0041] S1: A solar photovoltaic panel, a control mainboard and two groups of battery units are arranged inside the offshore buoy, and the solar photovoltaic panel and the two groups of battery units are connected via the control mainboard;

[0042] S2: When the first battery unit in the two battery units is supplying power to the load, the second battery unit is continuously charged by the solar photovoltaic panel. When the power of the first battery unit is consumed to the set minimum threshold, it will automatically switch to the second battery unit to supply power to the load, and the solar photovoltaic panel will switch to charging the first battery unit;

[0043] Specifically, when the first battery unit is supplying power to the load, the second battery unit is continuously charged by the solar photovoltaic panel. When the discharge rate of the first battery unit is lower than the charging rate of the second battery unit, the second battery unit will eventually be fully charged. When the discharge rate of the second battery unit is lower than the charging rate of the first battery unit when supplying power to the load, the first battery unit will eventually be fully charged. Therefore, the battery can be fully charged at each stage, thereby extending the battery life. The present invention uses two groups of battery units for mutual hot standby switching control to achieve a stable, long-term and healthy power supply system for the equipment.

[0044] S3: When the voltage of any battery unit is lower than the preset fault threshold, solar charging is changed to single power charging to avoid the problem of equipment being unusable after power failure.

[0045] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A dual power hot standby system for offshore buoys, characterized in that: The system includes a solar photovoltaic panel, a control main board and a battery pack arranged inside an offshore buoy. The control main board is electrically connected to the solar photovoltaic panel and the battery pack. The battery pack includes a first battery unit and a second battery unit, which are independently connected to the control main board and controlled by the control main board. When the first battery unit is supplying power to the load, the second battery unit is continuously charged through the solar photovoltaic panel. When the power of the first battery unit is consumed to a set minimum threshold, it automatically switches to the second battery unit to supply power to the load, and the solar photovoltaic panel will switch to charging the first battery unit, thereby ensuring uninterrupted operation between the two battery units of the battery pack in the offshore buoy.

2. The offshore buoy dual power supply hot standby system according to claim 1, characterized in that: The solar photovoltaic panel includes a positioning module and a plurality of photovoltaic panel units. The plurality of photovoltaic panel units are divided into two groups. The photovoltaic panel units in a group are connected in series and then the two groups are connected in parallel, thereby preventing all failures of the solar photovoltaic panel caused by a failure of a photovoltaic panel unit.

3. The offshore buoy dual power supply hot standby system according to claim 2 is characterized in that: The control main board includes a communication module connected to the positioning module and a main control MCU, and the main control MCU is used to control the first battery unit and the second battery unit.

4. The offshore buoy dual power supply hot standby system according to claim 1, characterized in that: The control main board is also provided with a first connection unit connected to the solar photovoltaic panel and a second connection unit connected to the battery pack.

5. The offshore buoy dual power supply hot standby system according to claim 1, characterized in that: When the first battery unit is supplying power to the load, the second battery unit is continuously charged by the solar photovoltaic panel. When the discharge rate of the first battery unit is lower than the charging rate of the second battery unit, the second battery unit will eventually be fully charged. When the second battery unit is supplying power to the load, and its discharge rate is lower than the charging rate of the first battery unit, the first battery unit will also eventually be fully charged.

6. The offshore buoy dual power supply hot standby system according to claim 1, characterized in that: The offshore buoy dual power hot standby system includes two control modes. The first is a preset mode, that is, the load working mode is pre-set, and when any problem occurs in the power supply system, it is executed according to the preset mode; the second is a trusteeship control mode, which generates a trusteeship control model according to weather conditions and regular sunshine conditions at the latitude of the buoy, and automatically adjusts the charging and load power supply intervals, that is, when the weather is continuously rainy, the load power supply interval is automatically extended to achieve power saving mode; according to the location information and season information of the positioning module on the solar photovoltaic panel, it is associated with the conversion power efficiency coefficient of the solar panel to change the load power supply interval, thereby ensuring that the backup battery has enough time to be fully charged.

7. The offshore buoy dual power supply hot standby system according to claim 1, characterized in that: When the voltage of any battery unit is lower than the preset fault threshold, solar charging is changed to single power charging to avoid the problem of equipment being unusable after power failure.

8. A control method for a dual power hot standby system for an offshore buoy, characterized in that: The method comprises the following steps: A solar photovoltaic panel, a control mainboard and two groups of battery units are arranged inside the offshore buoy, and the solar photovoltaic panel and the two groups of battery units are connected via the control mainboard; When the first battery unit in the two battery units is supplying power to the load, the second battery unit is continuously charged by the solar photovoltaic panel. When the power of the first battery unit is consumed to the set minimum threshold, it will automatically switch to the second battery unit to supply power to the load, and the solar photovoltaic panel will switch to charging the first battery unit. When the voltage of any battery unit is lower than the preset fault threshold, solar charging is changed to single power charging to avoid the problem of equipment being unusable after power failure.