A distributed photovoltaic power station secondary system rectifier device

Abstract

The utility model discloses a kind of distributed photovoltaic power station secondary system rectifying device, including box body;The upper side of the box body is fixed with box cover, the left side of the box body is equipped with inlet, the right side of the box body is equipped with outlet, the inner chamber bottom surface of the box body is sequentially equipped with voltage detection module, switchable voltage dividing resistor group and rectifier module from left to right, the output end of the voltage detection module is electrically connected with the input end of switchable voltage dividing resistor group, this distributed photovoltaic power station secondary system rectifying device, by setting voltage detection module, switchable voltage dividing resistor group and rectifier module, effectively solve the problem that rectifying device voltage adaptability is poor and stability is low in prior art, the cooperation of voltage detection module and switchable voltage dividing resistor group, realized the accurate detection and flexible voltage division to input voltage, make rectifier module work under stable voltage environment, improve rectification effect and the practical life of device.

Description

Technical Field

[0001] This utility model belongs to the technical field of photovoltaic power station rectifier equipment, and particularly relates to a rectifier device for a secondary system of a distributed photovoltaic power station. Background Technology

[0002] In the secondary system of a distributed photovoltaic power station, the rectifier is a key component. Its function is to rectify the input electrical energy to meet the requirements of various devices in the secondary system for the form of electrical energy and voltage stability.

[0003] However, existing rectifier devices lack effective detection and voltage division regulation mechanisms for input voltage. When the input voltage fluctuates, they are difficult to adapt to different voltage conditions, which can easily lead to abnormal operation or even damage of the rectifier module due to voltage mismatch. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a rectifier device for a secondary system of a distributed photovoltaic power station. By setting up a voltage detection module, a switchable voltage divider resistor group, and a rectifier module, it effectively solves the problems of poor voltage adaptability and low stability of rectifier devices in the prior art. The cooperation between the voltage detection module and the switchable voltage divider resistor group realizes accurate detection and flexible voltage division of the input voltage, enabling the rectifier module to work in a stable voltage environment, thereby improving the rectification effect and the service life of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A rectifier device for a secondary system of a distributed photovoltaic power station includes a housing. A cover is fixed to the upper side of the housing. An inlet is located on the left side of the housing, and an outlet is located on the right side. From left to right, a voltage detection module, a switchable voltage divider resistor group, and a rectifier module are sequentially arranged on the bottom surface of the housing's inner cavity. The output terminal of the voltage detection module is electrically connected to the input terminal of the switchable voltage divider resistor group, and the output terminal of the switchable voltage divider resistor group is electrically connected to the input terminal of the rectifier module. A battery is fixed to the bottom side of the cover. The output terminal of the battery is electrically connected to the input terminals of the voltage detection module, the switchable voltage divider resistor group, and the rectifier module, respectively. By incorporating the voltage detection module, the switchable voltage divider resistor group, and the rectifier module, the poor voltage adaptability and low stability of existing rectifier devices are effectively solved. The cooperation between the voltage detection module and the switchable voltage divider resistor group enables accurate detection and flexible voltage division of the input voltage, allowing the rectifier module to operate under a stable voltage environment, thus improving the rectification effect and the device's service life.

[0006] Furthermore, the switchable voltage divider resistor group consists of at least four resistors with different resistance values, and each resistor with a different resistance value is controlled by an electronic switch.

[0007] Furthermore, the box cover is equipped with a photovoltaic panel, which is electrically connected to the battery through a rectifier. The combination of the photovoltaic panel and the battery constructs a dual power supply guarantee mechanism, ensuring the continuous operation of the secondary system and providing reliable power support for the stable operation of the secondary system of the distributed photovoltaic power station.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a voltage detection module, a switchable voltage divider resistor group, and a rectifier module, the problems of poor voltage adaptability and low stability of the rectifier device in the prior art are effectively solved. The cooperation between the voltage detection module and the switchable voltage divider resistor group realizes accurate detection and flexible voltage division of the input voltage, enabling the rectifier module to work in a stable voltage environment, improving the rectification effect and the service life of the device. The combination of photovoltaic panels and batteries constructs a dual power supply guarantee mechanism, ensuring the continuous operation of the secondary system and providing reliable power support for the stable operation of the secondary system of the distributed photovoltaic power station. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the circuit principle of the rectifier module of this utility model.

[0011] In the diagram: 1. Box body, 2. Box cover, 3. Cable inlet, 4. Cable outlet, 5. Voltage detection module, 6. Switchable voltage divider resistor group, 7. Rectifier module, 8. Battery, 9. Photovoltaic panel. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0013] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying 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 limitations on this utility model. Example

[0014] See appendix Figure 1-2As shown, a rectifier device for a secondary system of a distributed photovoltaic power station includes a housing 1; a cover 2 is fixed to the upper side of the housing 1; an inlet 3 is opened on the left side of the housing 1; an outlet 4 is opened on the right side of the housing 1; a voltage detection module 5, a switchable voltage divider resistor group 6, and a rectifier module 7 are arranged sequentially from left to right on the bottom surface of the inner cavity of the housing 1; the output terminal of the voltage detection module 5 is electrically connected to the input terminal of the switchable voltage divider resistor group 6; the output terminal of the switchable voltage divider resistor group 6 is electrically connected to the input terminal of the rectifier module 7; and a battery is fixed to the bottom side of the cover 2. 8. The output terminal of the storage battery 8 is electrically connected to the input terminals of the voltage detection module 5, the switchable voltage divider resistor group 6, and the rectifier module 7, respectively. By setting up the voltage detection module 5, the switchable voltage divider resistor group 6, and the rectifier module 7, the problems of poor voltage adaptability and low stability of the rectifier device in the prior art are effectively solved. The cooperation between the voltage detection module 5 and the switchable voltage divider resistor group 6 realizes accurate detection and flexible voltage division of the input voltage, enabling the rectifier module to work in a stable voltage environment, improving the rectification effect and the service life of the device.

[0015] The switchable voltage divider resistor group 6 consists of at least four resistors with different resistance values, and each resistor with a different resistance value is controlled by an electronic switch.

[0016] The cover 2 is equipped with a photovoltaic panel 9, which is electrically connected to the battery 8 through a rectifier. The combination of the photovoltaic panel 9 and the battery 8 forms a dual power supply guarantee mechanism, ensuring the continuous operation of the secondary system and providing reliable power support for the stable operation of the secondary system of the distributed photovoltaic power station.

[0017] Working Principle: External electrical energy enters the housing 1 through inlet 3 and is transmitted to the voltage detection module 5. The voltage detection module 5 detects the input voltage, and the detected voltage signal is transmitted to the switchable voltage divider resistor group 6. This resistor group consists of at least four resistors with different resistance values, and each resistor is controlled by an electronic switch. Based on the detection result of the voltage detection module 5, the electronic switch switches between different resistance values ​​to achieve voltage division and adjustment of the input voltage to meet the working requirements of the subsequent rectifier module 7. The voltage after voltage division and adjustment is delivered to the rectifier module 7, which performs rectification. The processed electrical energy is output from outlet 4 to supply the relevant equipment of the secondary system of the distributed photovoltaic power station. At the same time, the photovoltaic panels 9 convert solar energy into electrical energy, which is rectified by the rectifier and stored in the battery 8. The battery 8 provides backup power for the voltage detection module 5, the switchable voltage divider resistor group 6, and the rectifier module 7, ensuring that the device can still maintain basic functions and guarantee the stable operation of the secondary system when the external power supply is abnormal. This application, by setting up a voltage detection module 5, a switchable voltage divider resistor group 6, and a rectifier module 7, can effectively adapt to voltage fluctuations and solves the problems of poor voltage adaptability and instability of rectifier devices in the prior art.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rectifier device for a secondary system of a distributed photovoltaic power station, comprising a housing, characterized in that: A cover is fixed to the upper side of the box body. An inlet is opened on the left side of the box body, and an outlet is opened on the right side of the box body. From left to right, a voltage detection module, a switchable voltage divider resistor group, and a rectifier module are arranged on the bottom surface of the inner cavity of the box body. The output terminal of the voltage detection module is electrically connected to the input terminal of the switchable voltage divider resistor group, and the output terminal of the switchable voltage divider resistor group is electrically connected to the input terminal of the rectifier module. A battery is fixed to the bottom side of the cover, and the output terminal of the battery is electrically connected to the input terminals of the voltage detection module, the switchable voltage divider resistor group, and the rectifier module, respectively.

2. The rectifier device for a secondary system of a distributed photovoltaic power station according to claim 1, characterized in that: The switchable voltage divider resistor group consists of at least four resistors with different resistance values, and each resistor with a different resistance value is controlled by an electronic switch.

3. The rectifier device for a secondary system of a distributed photovoltaic power station according to claim 1, characterized in that: The box cover is equipped with a photovoltaic panel, which is electrically connected to the battery through a rectifier.

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