Power supply device and electric control gyrocompass

Abstract

The invention relates to the technical field of power supply equipment, and particularly discloses a power supply device and an electric control gyrocompass, the power supply device comprises a power supply switching device, the first input end of the power supply switching device is configured to be connected with the first output end of a power supply box on a ship, and the output end of the power supply switching device is used for supplying power to a load; the emergency power supply device comprises a rectifier module, a storage battery pack and an inverter module, the input end of the rectifier module is configured to be connected with the second output end of the power supply box, the output end of the rectifier module is connected with the input end of the storage battery pack, the output end of the storage battery pack is connected with the input end of the inverter module, and the inverter module is connected with the output end of the rectifier module. And the output end of the inversion module is connected with the second input end of the power supply switching device. According to the power supply device and the electric control gyrocompass, stable and continuous power supply is realized, so that continuous and normal work of the electric control gyrocompass is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply equipment, and in particular to a power supply device and an electrically controlled gyrocompass. Background Art

[0002] The electric gyrocompass is an important navigation device for ships, providing the ship's heading information. When the ship's main power supply is working normally, it provides AC 220V power to the electric gyrocompass. When the main power supply fails unexpectedly or the ship docks or switches to shore power, the ship will lose power during the start-up of the emergency generator or when the shore power is turned on. After the electric gyrocompass loses power, it takes a long time to restart and enter a stable working state. Even the low-precision fast alignment state takes more than 30 minutes, and the accurate state may take several hours, causing the electric gyrocompass to be unable to continue to work normally. Summary of the invention

[0003] The object of the present invention is to provide a power supply device to achieve stable and continuous power supply to ensure that the electronically controlled gyrocompass continues to work normally.

[0004] In order to achieve the above object, the present invention provides a power supply device, comprising:

[0005] a power switching device, wherein a first input end of the power switching device is configured to be connected to a first output end of a power supply box on the ship, and an output end of the power switching device is used to supply power to a load; and

[0006] The emergency power supply device comprises a rectifier module, a battery pack and an inverter module, wherein the input end of the rectifier module is configured to be connected to the second output end of the power supply box, the output end of the rectifier module is connected to the input end of the battery pack, the output end of the battery pack is connected to the input end of the inverter module, and the output end of the inverter module is connected to the second input end of the power switching device;

[0007] Wherein, the power switching device is used to switch to use the power supply box or the emergency power supply device to continuously supply power to the load.

[0008] In some embodiments, the emergency power supply device further includes a charging and discharging module, an input end of the charging and discharging module is connected to an output end of the rectifier module, and an output end of the charging and discharging module is connected to an input end of the battery pack.

[0009] In some embodiments, the charge and discharge module is configured to perform charge and discharge control, thermal management and balancing control on the battery pack charging process.

[0010] In some embodiments, the emergency power supply device further includes a first filter module, an input end of the first filter module is connected to an output end of the battery pack, and an output end of the first filter module is connected to an input end of the inverter module.

[0011] In some embodiments, the emergency power supply device further includes a transformer module, an input end of the transformer module is connected to an output end of the inverter module, and an output end of the transformer module is connected to a second input end of the power switching device.

[0012] In some embodiments, the emergency power supply device further includes a second filter module, an input end of the second filter module is connected to an output end of the transformer module, and an output end of the second filter module is connected to a second input end of the power switching device.

[0013] In some embodiments, the inverter module uses a three-level inverter.

[0014] In some embodiments, the battery pack is composed of a plurality of connected single lithium batteries.

[0015] In some embodiments, the output end of the power switching device is configured to output an AC voltage of 220V.

[0016] On the other hand, the present invention provides an electronically controlled gyrocompass, comprising an electronically controlled gyrocompass body and the power supply device provided by the present invention, wherein the output end of the power switching device is connected to the electronically controlled gyrocompass body.

[0017] The present invention provides a power supply device and an electrically controlled gyrocompass, which have the following beneficial effects compared with the prior art:

[0018] The first input end of the power switching device is configured to be connected to the first output end of the power supply box on the ship, and the output end of the power switching device is used to supply power to the load. The emergency power supply device includes a rectifier module, a battery pack and an inverter module which are electrically connected in sequence. The output end of the inverter module is connected to the second input end of the power switching device, so that the power switching device can switch to use the power supply box or the emergency power supply device to continuously supply power to the load, thereby achieving stable and continuous power supply to ensure that the electronically controlled gyrocompass continues to work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A functional block diagram of a power supply device provided in some embodiments of the present invention.

[0020] Figure 2 A schematic diagram of an inverter of a power supply device provided in some embodiments of the present invention.

[0021] Figure 3A schematic diagram of PWM pulse width modulation of an inverter of a power supply device provided in some embodiments of the present invention.

[0022] In the figure: 1. power switching device; 2. emergency power supply device; 21. rectifier module; 22. battery pack; 23. inverter module; 24. charge and discharge module; 25. first filter module; 26 transformer module; 27. second filter module; 3. power supply box; 4. load. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0024] It should be understood that, in the description of the present application, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0025] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1-3 As shown, some embodiments of the present invention provide a power supply device, including a power supply switching device 1 and an emergency power supply device 2. The emergency power supply device 2 can continuously supply power to a load 4 in an emergency state.

[0027] The first input end of the power switching device 1 is configured to be connected to the first output end of the power supply box 3 on the ship, and the output end of the power switching device 1 is used to power the load 4. Exemplarily, the load 4 is the electric-controlled gyrocompass body. Specifically, the power supply box 3 is powered by the main power grid on the ship. When in use, when the main power grid of the ship is normally powered, the power switching device 1 can automatically switch and select the ship's power supply box 3 to power the electric-controlled gyrocompass body, while the ship's power supply box 3 charges the emergency power supply device 2. When the ship loses power unexpectedly, the power switching device 1 can automatically switch and select the emergency power supply device 2 to power the electric-controlled gyrocompass body.

[0028] The emergency power supply device 2 includes a rectifier module 21, a battery pack 22 and an inverter module 23. The input end of the rectifier module 21 is configured to be connected to the second output end of the power supply box 3, the output end of the rectifier module 21 is connected to the input end of the battery pack 22, the output end of the battery pack 22 is connected to the input end of the inverter module 23, and the output end of the inverter module 23 is connected to the second input end of the power supply switching device 1. Among them, the rectifier module 21 has a rectifying function, which can convert the AC power input from the power supply box 3 into DC power and input it into the battery pack 22. The battery pack 22 can store electrical energy and output DC power. The inverter module 23 has an inverter function, which can convert the DC power output from the battery pack 22 into AC power and input it into the power supply switching device 1.

[0029] In this embodiment, the power switching device 1 can switch to use the power supply box 3 or the emergency power supply device 2 to continuously supply power to the load 4. The specific process is: when the main power grid of the ship is normally powered, the power switching device 1 can automatically switch and select the ship's power supply box 3 to power the electric-controlled gyrocompass body, and the ship's power supply box 3 charges the emergency power supply device 2. When the ship loses power unexpectedly, the power switching device 1 can automatically switch and select the emergency power supply device 2 to power the electric-controlled gyrocompass body.

[0030] Based on the above structural setting, the first input end of the power switching device 1 is configured to be connected to the first output end of the power supply box 3 on the ship, the output end of the power switching device 1 is used to power the load 4, and the emergency power supply device 2 includes a rectifier module 21, a battery pack 22 and an inverter module 23 which are electrically connected in sequence, and the output end of the inverter module 23 is connected to the second input end of the power switching device 1, so that the power switching device 1 can be connected to the power provided by the power supply box 3 and the battery pack 22 respectively. Through the power switching device 1, the power supply box 3 or the emergency power supply device 2 can be switched to continuously power the electric-controlled gyrocompass body, thereby achieving stable and continuous power supply to ensure that the electric-controlled gyrocompass body continues to work normally.

[0031] In some embodiments, the emergency power supply device 2 further includes a charging and discharging module 24 , the input end of the charging and discharging module 24 is connected to the output end of the rectifier module 21 , and the output end of the charging and discharging module 24 is connected to the input end of the battery pack 22 .

[0032] In some embodiments, the charge and discharge module 24 is configured to perform charge and discharge control, thermal management, and balancing control on the charging process of the battery pack 22. Specifically, the battery management control unit of the charge and discharge module 24 implements charge and discharge control, thermal management, and balancing control, which can ensure the safe operation of the battery pack 22 and improve the service life of the battery pack 22.

[0033] In some embodiments, the emergency power supply device 2 further includes a first filter module 25, the input end of the first filter module 25 is connected to the output end of the battery pack 22, and the output end of the first filter module 25 is connected to the input end of the inverter module 23. The first filter module 25 can eliminate the ripple and noise caused by the DC output of the battery pack 22 and reduce electromagnetic interference.

[0034] In some embodiments, the emergency power supply device 2 further includes a transformer module 26, the input end of the transformer module 26 is connected to the output end of the inverter module 23, and the output end of the transformer module 26 is connected to the second input end of the power switching device 1. The transformer module 26 can adjust the voltage of the AC power output by the inverter module 23 to 220V.

[0035] In some embodiments, the emergency power supply device 2 further includes a second filter module 27, the input end of the second filter module 27 is connected to the output end of the transformer module 26, and the output end of the second filter module 27 is connected to the second input end of the power switching device 1. The second filter module 27 can eliminate high-frequency harmonic components in the AC current output by the transformer module 26, further reducing electromagnetic interference.

[0036] like Figure 2 and 3 As shown, in some embodiments, the inverter module 23 uses a three-level inverter for performing the inversion process of converting DC to sinusoidal AC, including the process of converting DC to AC inverter PWM pulse width modulation. Specifically, two switch units are used, which are respectively composed of T1, T'1 and T2, T'2. Four switch states are used during operation, in which two field effect tubes are in the on state and two are in the off state. As shown in the following table:

[0037] Switch Status T1 T2 T'1 T'2 V N 1 1 1 0 0 +VDC / 2 2 1 0 0 1 0 3 0 1 1 0 0 4 0 0 1 1 -VDC / 2

[0038] By using +VDC / 2, 0, and -VDC / 2 as reference points for PWM modulation, the on and off of the switch unit is controlled to generate the required AC sinusoidal voltage. In this way, field effect transistors with lower channel resistance can be selected to greatly reduce conduction losses. In addition, due to the reduced power consumption of the switching device, the filter design size of the subsequent filter module can be reduced, effectively reducing the harmonic content and electromagnetic interference.

[0039] In some embodiments, the battery pack 22 is composed of a plurality of lithium-ion batteries connected in series and / or in parallel. The battery pack 22 can provide a DC power supply.

[0040] In some embodiments, the output end of the power switching device 1 is configured to output an AC voltage of 220V to meet the power supply requirement of the electronically controlled gyrocompass body.

[0041] The electronically controlled gyrocompass provided in some other embodiments of the present invention comprises an electronically controlled gyrocompass body and a power supply device provided in some embodiments of the present invention, and the output end of the power switching device 1 is connected to the electronically controlled gyrocompass body.

[0042] Based on the above-mentioned structural setting, since the power switching device 1 can be connected to the power supply provided by the power supply box 3 and the battery pack 22 respectively, the power switching device 1 can switch to use the power supply box 3 or the emergency power supply device 2 to continuously supply power to the electronically-controlled gyrocompass body, thereby achieving stable and continuous power supply to ensure that the electronically-controlled gyrocompass body continues to work normally.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A power supply device, characterized in that: include: A power switching device, wherein a first input end of the power switching device is configured to be connected to a first output end of a power supply box on a ship, and an output end of the power switching device is used to supply power to a load; as well as The emergency power supply device comprises a rectifier module, a battery pack and an inverter module, wherein the input end of the rectifier module is configured to be connected to the second output end of the power supply box, the output end of the rectifier module is connected to the input end of the battery pack, the output end of the battery pack is connected to the input end of the inverter module, and the output end of the inverter module is connected to the second input end of the power switching device; The power switching device is capable of switching between the power supply box and the emergency power supply device to continuously supply power to the load.

2. The power supply device according to claim 1, characterized in that: The emergency power supply device also includes a charge and discharge module, the input end of the charge and discharge module is connected to the output end of the rectifier module, and the output end of the charge and discharge module is connected to the input end of the battery pack.

3. The power supply device according to claim 1, characterized in that: The charging and discharging module is configured to perform charging and discharging control, thermal management and balancing control on the charging process of the battery pack.

4. The power supply device according to claim 1, characterized in that: The emergency power supply device further comprises a first filter module, the input end of the first filter module is connected to the output end of the battery pack, and the output end of the first filter module is connected to the input end of the inverter module.

5. The power supply device according to claim 1, characterized in that: The emergency power supply device further comprises a transformer module, the input end of the transformer module is connected to the output end of the inverter module, and the output end of the transformer module is connected to the second input end of the power switching device.

6. The power supply device according to claim 5, characterized in that: The emergency power supply device further comprises a second filter module, the input end of the second filter module is connected to the output end of the transformer module, and the output end of the second filter module is connected to the second input end of the power switching device.

7. The power supply device according to claim 1, characterized in that: The inverter module adopts a three-level inverter.

8. The power supply device according to claim 1, characterized in that: The battery pack is formed by connecting a plurality of single lithium batteries.

9. The power supply device according to claim 1, characterized in that: The output end of the power switching device is configured to output an AC voltage of 220V.

10. An electronically controlled gyrocompass, characterized in that: It comprises an electrically controlled gyrocompass body and a power supply device as described in any one of claims 1 to 9, wherein the output end of the power switching device is connected to the electrically controlled gyrocompass body.

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