Marine low-power equipment power supply system

Abstract

The utility model relates to a marine low-power equipment power supply system, which belongs to the technical field of marine equipment power supply, and comprises an energy storage unit, a first protector, a second protector, a switching power supply and a voltage stabilizer, and the energy storage unit, the first protector, the second protector and the switching power supply are sequentially connected in series. And the voltage stabilizer is electrically connected with the second protector. According to the utility model, the technical problems of low power supply safety and stability of low-power equipment for ships in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply for marine equipment, in particular to a power supply system for marine low-power equipment. Background Art

[0002] There are two main types of uninterruptible power supplies on the market: one is to use a 12V lead-acid battery as an energy storage unit, combined with an inverter circuit to output AC 220V. The advantages of this type of product are large energy storage, high output power, and relatively safe batteries. The disadvantage is that this type of product is mainly used to power high-power equipment (above 300W), so in terms of design, they are all equipped with a low-power (less than 30W) protection function, and the power of a set of cameras is mostly within 15W, so when using this product to power a camera, the discharge protection of the power supply will be triggered, resulting in unsustainable power supply; the second is to use a 3.7V lithium battery as an energy storage unit, through a boost circuit, output 12V to directly power the camera. The advantage of this type of power supply is that it can power low-power equipment, and has a high energy density, so it is small in size and light in weight. The disadvantage is that the battery used is a lithium battery, which is not safe and stable enough to meet the safety requirements of the cabin environment for the equipment. Therefore, there is a technical problem in the prior art that the power supply safety and stability of low-power equipment for ships are not high. Utility Model Content

[0003] In view of this, it is necessary to provide a power supply system for small-power marine equipment to solve the technical problems of low safety and stability of power supply for small-power marine equipment in the prior art.

[0004] In order to achieve the above object, the utility model provides a power supply system for low-power marine equipment, comprising:

[0005] Energy storage unit, first protector, second protector, switching power supply, voltage stabilizer;

[0006] The energy storage unit, the first protector, the second protector and the switching power supply are connected in series in sequence;

[0007] The voltage stabilizer is electrically connected to the second protector.

[0008] In a possible implementation, the energy storage unit is a lead-acid battery.

[0009] In a possible implementation, the model of the energy storage unit is: Chaowei 6-DZF-20.

[0010] In a possible implementation, the model of the first protector is: CHINT NCP-63.

[0011] In a possible implementation, the model of the switching power supply is: Mean Well SCP-50-12.

[0012] In a possible implementation, the model of the voltage regulator is: RT-DX80K051224.

[0013] In a possible implementation, the system includes: a camera, wherein the camera is electrically connected to the voltage regulator.

[0014] In a possible implementation, the second protector includes: a voltage sampling module, a first relay switch, and a second relay switch;

[0015] One end of the voltage sampling module is electrically connected to the first relay switch, and the other end of the voltage sampling module is electrically connected to the second relay switch.

[0016] In a possible implementation manner, the voltage sampling module is electrically connected to the first protector.

[0017] In a possible implementation, the first relay switch is electrically connected to the voltage stabilizer;

[0018] The second relay switch is electrically connected to the switching power supply.

[0019] The utility model provides a power supply system for low-power marine equipment, comprising: an energy storage unit, a first protector, a second protector, a switching power supply, and a voltage stabilizer, wherein the energy storage unit, the first protector, the second protector, and the switching power supply are sequentially connected in series, and the voltage stabilizer is electrically connected to the second protector, so as to solve the technical problem of low safety and stability of power supply for low-power marine equipment in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a circuit diagram of the power supply system for small-power marine equipment of the utility model;

[0021] Figure 2 This is the principle diagram of the power supply system for small-power marine equipment of the utility model;

[0022] Figure 3 The circuit diagram of the second protector of an embodiment of the power supply system for small-power marine equipment of the utility model is shown in FIG. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0024] Figure 1 This is the circuit diagram of the utility model of the power supply system for small-power marine equipment and Figure 2 This is the schematic diagram of the power supply system for small-power marine equipment of the utility model, including:

[0025] Energy storage unit 1, first protector 2, second protector 3, switching power supply 4, voltage stabilizer 5;

[0026] The energy storage unit 1, the first protector 2, the second protector 3 and the switching power supply 4 are connected in series in sequence;

[0027] The voltage stabilizer 5 is electrically connected to the second protector 3 and the switching power supply 4 .

[0028] It is understandable that in Figure 2 The middle cabin is powered by AC power, and links ① and ② are turned on and working. ① The AC power is stepped down by the switching power supply and then supplies power to the battery through the second protector 3. ② The AC power is stepped down by the switching power supply 4 and then supplies power to the camera through the voltage regulator 5. When the AC power in the cabin is disconnected, link ③ is turned on and working, and ③ the battery supplies power to the camera through the second protector 3 and the voltage regulator 5.

[0029] The beneficial effect of the utility model is that the internal inverter module of the conventional UPS is removed, and the voltage of the lead-acid battery is directly used as the 12V output after voltage stabilization, which reduces the loss during power conversion, supports low-power equipment with higher safety, and has a longer battery life, thus meeting the safety requirements of onboard equipment.

[0030] It should be noted that, for the power supply scenario of marine cameras, the utility model uses a safer lead-acid battery for energy storage, and is equipped with a battery charge and discharge protection circuit to achieve stable and safe uninterrupted operation of low-power equipment, thus solving the technical problem of low power supply safety and stability of marine low-power equipment in the prior art.

[0031] In one embodiment of the present invention, the energy storage unit 1 is a lead-acid battery.

[0032] In one embodiment of the present invention, the model of the energy storage unit 1 is: Chaowei 6-DZF-20.

[0033] It can be understood that the energy storage unit 1: consists of CHILWEE 6-DZF-20 model, 12v20AH lead-acid battery, which mainly plays the role of energy storage. The capacity can be flexibly changed by connecting multiple batteries of the same model in parallel or directly replacing the battery of this model with a larger capacity to increase the battery life, and it has higher safety.

[0034] In an embodiment of the present invention, the model of the first protector 2 is: Chint NCP-63.

[0035] It is understandable that the first protector 2 uses a Chint NCP-63 circuit breaker, which has the following advantages: flame retardant material, high and low temperature resistance, overload protection, short circuit protection, isolation function, and fast response time <0.1S. It is used for battery short circuit protection to prevent the external circuit from causing a battery short circuit fire.

[0036] In one embodiment of the present invention, the model of the switching power supply 4 is: Mean Well SCP-50-12.

[0037] It is understandable that the Mean Well SCP-50-12 switching power supply 4 is used. The advantages of this power supply are that it supports a wide voltage input of 85~264V, an adjustable output voltage of 12~14.4V, overload and overvoltage safety protection functions, and temperature compensation functions. It converts 220 AC power into 13.8V DC power to power the camera and charge the battery at the same time.

[0038] In an embodiment of the present invention, the model of the voltage stabilizer 5 is: RT-DX80K051224.

[0039] It is understandable that the voltage stabilizer 5 adopts the RT-DX80K051224 voltage stabilizer 5 of RTRURE, which has the advantages of being integrally formed with a die-cast aluminum shell and potted with silicone, and having the advantages of efficient heat dissipation, waterproofness, moisture resistance, and shock resistance. Since the voltage of the energy storage unit 1 is a range value according to the current power, and fluctuates in a small range of about 12V, the voltage stabilizer 5 stabilizes a range voltage to 12V to provide a stable power supply voltage for the camera.

[0040] In an embodiment of the present invention, the system includes a camera, wherein the camera is electrically connected to a voltage stabilizer 5 .

[0041] Figure 3 The circuit diagram of the second protector of an embodiment of the power supply system for low-power marine equipment of the utility model includes:

[0042] A voltage sampling module, a first relay switch and a second relay switch;

[0043] One end of the voltage sampling module is electrically connected to the first relay switch, and the other end of the voltage sampling module is electrically connected to the second relay switch.

[0044] Understandably, Figure 3K1 and K2 are two relay switches, K1 is used to control the on and off between the short-circuit protector and the voltage regulator, and K2 is used to control the on and off between the switch power supply and the circuit breaker protector. Combined with the overall circuit diagram, the output of the short-circuit protector in the figure is used as an input of the overcharge and over-discharge protector module. The voltage sampling module monitors the real-time voltage of the energy storage unit through the short-circuit protector, and controls the on and off of switch K1 through the collected threshold lower limit voltage, so that when the voltage of the energy storage unit is too low, the energy storage unit is disconnected from the power supply to the voltage regulator, realizing low voltage protection and preventing the lead-acid battery in the energy unit from over-discharging.

[0045] The output of the 220 to 13.8V switching power supply in the figure is another input of the overcharge and overdischarge protector module. This input is connected to the circuit through K2, which can charge the energy storage unit and power the voltage regulator at the same time. The voltage sampling module monitors the real-time voltage of the energy storage unit through the short-circuit protector, and controls the on and off of the switch K2 through the collected threshold upper voltage to disconnect the input of the switching power supply to the module when the voltage of the energy storage unit is too high, so as to prevent the lead-acid battery in the energy storage unit from being overcharged.

[0046] In an embodiment of the present invention, the voltage sampling module is electrically connected to the first protector 2 .

[0047] In one embodiment of the present utility model, the first relay switch is electrically connected to the voltage stabilizer 5;

[0048] The second relay switch is electrically connected to the switching power supply 4 .

[0049] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A power supply system for low-power marine equipment, characterized in that: include: Energy storage unit (1), first protector (2), second protector (3), switching power supply (4), voltage regulator (5); The energy storage unit (1), the first protector (2), the second protector (3) and the switching power supply (4) are connected in series in sequence; The voltage stabilizer (5) is electrically connected to the second protector (3) and the switching power supply (4).

2. The power supply system for low-power marine equipment according to claim 1, characterized in that: The energy storage unit (1) is a lead-acid battery.

3. The power supply system for low-power marine equipment according to claim 2, characterized in that: The model of the energy storage unit (1) is: Chaowei 6-DZF-20.

4. The power supply system for low-power marine equipment according to claim 1, characterized in that: The model of the first protector (2) is: Chint NCP-63.

5. The power supply system for low-power marine equipment according to claim 1, characterized in that: The model of the switching power supply (4) is: Mean Well SCP-50-12.

6. The power supply system for low-power marine equipment according to claim 1, characterized in that: The model of the voltage stabilizer (5) is: RT-DX80K051224.

7. The power supply system for low-power marine equipment according to claim 1, characterized in that: The system comprises: a camera, wherein the camera is electrically connected to the voltage stabilizer (5).

8. The power supply system for low-power marine equipment according to claim 1, characterized in that: The second protector (3) comprises: a voltage sampling module, a first relay switch and a second relay switch; One end of the voltage sampling module is electrically connected to the first relay switch, and the other end of the voltage sampling module is electrically connected to the second relay switch.

9. The power supply system for low-power marine equipment according to claim 8, characterized in that: The voltage sampling module is electrically connected to the first protector (2).

10. The power supply system for low-power marine equipment according to claim 8, characterized in that: The first relay switch is electrically connected to the voltage stabilizer (5); The second relay switch is electrically connected to the switching power supply (4).

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