Multifunctional power supply system

Abstract

The utility model discloses a multifunctional power supply system, and belongs to the technical field of power supplies. Comprising a power input module, a protection filter circuit, a DC load module and an MCU module. The power supply input module is connected with the protection filter circuit, and the protection filter circuit is connected with the DC load module and the MCU module. The direct current load module is connected with the MCU module; the power supply input module comprises a first input power supply, a second input power supply and a third input power supply; the protection filter circuit comprises a common mode filter circuit, a differential mode filter circuit and a TVS filter circuit. The DC load module comprises a DC-DC conversion circuit, an LDO circuit and a voltage sampling monitoring circuit. The power supply device supports various power supply inputs, can be suitable for different power supply occasions, provides various power supply outputs, and can meet the power supply requirements of various devices. The method can be widely applied to various fields.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a multifunctional power supply system. Background Art

[0002] In recent years, my country has developed and utilized new energy rapidly, and has become the largest country in the utilization of new energy. Wind power generation and solar power generation have achieved remarkable results. As the energy source of electronic equipment, power supply is an indispensable part of electronic equipment. While DC power supply is widely used in all walks of life, there are situations where the power supply mode only supports AC power, there are few types of output types, and there are not many output interfaces. The power supply mode is single, and the power input mode of the power supply product only supports AC power or other single types of power supply, and does not support solar energy, wind power, etc. The output type is single, and the power supply product has only one or two types of output power, and the type is single, and there are few power output interfaces, which cannot meet the needs of equipment with different power supply needs. Therefore, power supply products should conform to the trend of energy development and utilization, support multiple power supply input methods, and meet the power supply needs of most electronic products. In this way, the development trend of new energy can be met. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a multifunctional power supply system.

[0004] The purpose of the utility model is achieved through the following technical solutions: a multifunctional power supply system, including a power input module, a protection filter circuit, a DC load module and an MCU module; the power input module is connected to the protection filter circuit, the protection filter circuit is connected to the DC load module and the MCU module; the DC load module is connected to the MCU module; the power input module includes a first input power supply, a second input power supply and a third input power supply; the protection filter circuit includes a common mode filter circuit, a differential mode filter circuit and a TVS filter circuit; the DC load module includes a DC-DC conversion circuit, an LDO circuit and a voltage sampling and monitoring circuit; when the voltage is input, the power input module The input voltage is converted into a first DC voltage and output to a protection filter circuit. The protection filter circuit filters out differential mode interference and common mode interference in the first DC voltage to obtain a second DC voltage and output it to a DC load module. At the same time, the protection filter circuit performs current monitoring. After the detection signal is analyzed by the MCU module, the switch is turned off and closed by the SW signal. The DC load module converts the second DC voltage into a first output voltage, a second output voltage, a third output voltage and a fourth output voltage. At the same time, the DC load module monitors the first output voltage, the second output voltage, the third output voltage and the fourth output voltage. After the sampling signal is analyzed by the MCU module, the single-channel output is controlled by the SW signal.

[0005] Preferably, the first input power source is solar energy and / or wind energy, the second input power source is AC220V mains electricity, and the third input power source is a 12V battery.

[0006] Preferably, the power input module also includes a power selection switch, which preferentially uses the first input power supply. When the first input power supply has no power, the second input power supply is used for power supply. When both the first input power supply and the second input power supply have no power, the third input power supply is used for power supply.

[0007] Preferably, the power selection switch can independently control the on / off of any one of the first input power, the second input power and the third input power.

[0008] Preferably, the first output voltage is DC12V, the second output voltage is DC5V, the third output voltage is DC3V3, and the fourth output voltage is an adjustable LDO output voltage.

[0009] The beneficial effects of the utility model are:

[0010] 1) Multiple power supply modes: Support multiple power supply input modes, including solar energy, wind power, AC power and battery.

[0011] 2) Multiple output types: four types of output voltage and multiple output interfaces.

[0012] 3) Real-time monitoring of voltage and current, real-time undervoltage, overvoltage and overcurrent protection, and individual control of each output. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the functional block diagram of the multifunctional power supply system;

[0014] Figure 2 This is the principle block diagram of the power input module;

[0015] Figure 3 This is a schematic diagram of multiple outputs;

[0016] Figure 4 This is a schematic diagram of battery management of the utility model;

[0017] Figure 5 This is a schematic diagram of traditional battery management. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 5 The utility model provides a technical solution: a multifunctional power supply system, including a power input module, a protection filter circuit, a DC load module and an MCU module; the power input module is connected to the protection filter circuit, the protection filter circuit is connected to the DC load module and the MCU module; the DC load module is connected to the MCU module; the power input module includes a first input power supply, a second input power supply and a third input power supply; the protection filter circuit includes a common mode filter circuit, a differential mode filter circuit and a TVS filter circuit; the DC load module includes a DC-DC conversion circuit, an LDO circuit and a voltage sampling and monitoring circuit; when the voltage is input, the power input module inputs the input The voltage is converted into a first DC voltage and output to a protection filter circuit. The protection filter circuit filters out differential mode interference and common mode interference in the first DC voltage to obtain a second DC voltage and output it to a DC load module. At the same time, the protection filter circuit performs current monitoring. After the detection signal is analyzed by the MCU module, the switch is turned off and closed by the SW signal. The DC load module converts the second DC voltage into a first output voltage, a second output voltage, a third output voltage and a fourth output voltage. At the same time, the DC load module monitors the first output voltage, the second output voltage, the third output voltage and the fourth output voltage. After the sampling signal is analyzed by the MCU module, the single-channel output is controlled by the SW signal.

[0020] like Figure 1 As shown, the power input module: converts different types of input power into DC9V~30V DC voltage and transmits it to the subsequent module. Protection filter circuit: includes common mode, differential mode and TVS filter circuits to reduce the AC component in the pulsating DC power and reduce the ripple factor; monitor the input current in real time to realize the circuit protection function. DC load module: includes DC-DC conversion circuit, LDO circuit and voltage sampling monitoring to realize multiple types of voltages and multiple outputs. MCU module: responsible for analyzing the sampling signal and controlling the switch signal to realize the protection function and control function. The power input module converts the power supply input voltage into 9V~30V DC power, enters the protection filter circuit module, filters the differential mode interference and common mode interference, and enters the DC load module. At the same time, the current is monitored in the protection filter circuit. After the detection signal Iense is analyzed by the MCU, the switch is turned off and closed through the SW signal to realize undervoltage, overvoltage and overcurrent protection. The DC load module uses DC-DC technology to convert the input DC voltage into DC12V, DC5V, and DC3V3, and uses LDO technology to realize adjustable LDO output. The output voltage is monitored, and the sampling signal Vsens is analyzed by the MCU and then controlled by the SW signal to control the single output control to ensure the output voltage is stable and reliable.

[0021] In some embodiments, the first input power source is solar energy and / or wind energy, the second input power source is AC220V mains electricity, and the third input power source is a 12V battery.

[0022] In some embodiments, the power input module also includes a power selection switch, which preferentially uses the first input power supply. When the first input power supply has no power, the second input power supply is used for power supply. When both the first input power supply and the second input power supply have no power, the third input power supply is used for power supply.

[0023] In some embodiments, the power selection switch can independently control the on / off of any one of the first input power, the second input power, and the third input power.

[0024] In some embodiments, the first output voltage is DC12V, the second output voltage is DC5V, the third output voltage is DC3V3, and the fourth output voltage is an adjustable LDO output voltage.

[0025] like Figure 2 As shown, green energy power generation equipment such as wind turbines and solar panels, when their power controllers are not needed (such as wind turbine controllers, solar panel controllers, etc.), can directly connect their generator outputs to the generator input interface of this device. Polarity Adaptation: It can prevent reverse connection and wrong wiring from damaging the generator or UPS power supply; note that three-phase, single-phase, and DC can be directly input and polarity adaptive. AC220V input interface: The transformer provides electrical isolation and voltage transformation functions; single-phase rectification can rectify the transformed low-voltage AC into low-voltage DC. Battery input interface: It has battery management functions, including undervoltage, overvoltage, overcurrent, and overcharging protection functions; automatic charging and discharging switching functions. Power selection switch: The power supply priority from high to low is green power, AC220V, and battery. That is, when there is power, green power is used first, and when there is no power in green power, AC220V is used for power supply, and when there is no power in green power and AC220V, battery is used for power supply.

[0026] like Figure 3 As shown in the figure, in actual applications, devices with the same power supply may have different power supply requirements. For example, in a noise monitoring station, the meteorological instrument and alarm are both powered by 12V. In case of a power outage, the alarm needs to be powered off to save energy, while the meteorological instrument needs to be powered all the time. Therefore, in this case, the meteorological instrument should be powered by DC12V, while the alarm needs to be powered by SWDC12V.

[0027] Traditional battery management circuits such as Figure 5 As shown, the battery management circuit of the utility model is as follows Figure 4As shown, the difference is that the battery management circuit of the utility model has a battery playback function. In the battery discharge mode, it can still output multiple regulated power supplies through the UPS, and omit the DC-DC power supply module for the subsequent application, such as the DC12V to DC12V module, the DC12V to DC5V module, etc., to simplify the power supply design of the subsequent circuit and save more hardware resources. Battery playback: refers to the battery power supply mode, in which the output of the battery is connected to the primary power supply of the DC-DC transformer, so that all secondary outputs of the DC-DC transformer can obtain power output. No battery playback: In the battery power supply mode, the output of the battery is not connected to the primary input of the DC-DC transformer, so all the secondaries of the transformer cannot be powered, and only the output connected to the battery will have power output.

[0028] Traditional DC UPS power supplies only support two inputs, such as AC220V and one battery input, but do not support more inputs. The input of the utility model is a three-way input, including AC220V power supply, green power input, and battery input, and the use of the input power supply has a priority setting function. The green power input port supports multiple types of inputs, including low-voltage DC, AC, and generator inputs. In addition, the green power input port has a polarity adaptive function. (Note: The DC here can include battery power supply, and the voltage and polarity are adaptive, such as 12V battery or 24V battery) Multiple outputs have uninterruptible power supply and are equipped with independent power supply switches. That is, if any power supply at the input end is available, then multiple outputs can be used normally, and any output has the function of independently shutting down the load. In the input, any two inputs can be combined into a DC-UPS function, instead of having to have a battery. For example, the AC220V power supply and the solar panel are combined into a DC-UPS, which has the advantage of no battery, reducing the weight of the equipment and environmental pollution.

[0029] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A multifunctional power supply system, characterized in that: The invention comprises a power input module, a protection filter circuit, a DC load module and an MCU module; the power input module is connected to the protection filter circuit, the protection filter circuit is connected to the DC load module and the MCU module; the DC load module is connected to the MCU module; the power input module comprises a first input power supply, a second input power supply and a third input power supply; the protection filter circuit comprises a common mode filter circuit, a differential mode filter circuit and a TVS filter circuit; the DC load module comprises a DC-DC conversion circuit, an LDO circuit and a voltage sampling and monitoring circuit; when voltage is input, the power input module converts the input voltage into a first DC voltage and outputs it to the protection filter circuit, the protection filter circuit filters out the differential mode interference and the common mode interference in the first DC voltage to obtain a second DC voltage and outputs it to the DC load module, and the protection filter circuit monitors the current at the same time, the detection signal is analyzed by the MCU module, and the switch is turned off and closed by the SW signal, the DC load module converts the second DC voltage into a first output voltage, a second output voltage, a third output voltage and a fourth output voltage, and the DC load module monitors the first output voltage, the second output voltage, the third output voltage and the fourth output voltage, and the sampling signal is analyzed by the MCU module and the single-channel output is controlled by the SW signal.

2. The multifunctional power supply system according to claim 1, characterized in that: The first input power source is solar energy and / or wind energy, the second input power source is AC220V mains electricity, and the third input power source is a 12V battery.

3. The multifunctional power supply system according to claim 2, characterized in that: The power input module also includes a power selection switch, which preferentially uses the first input power supply. When the first input power supply has no power, the second input power supply is used for power supply. When both the first input power supply and the second input power supply have no power, the third input power supply is used for power supply.

4. The multifunctional power supply system according to claim 3, characterized in that: The power selection switch can independently control the on / off of any one of the first input power, the second input power and the third input power.

5. The multifunctional power supply system according to any one of claims 1 to 4, characterized in that: The first output voltage is DC12V, the second output voltage is DC5V, the third output voltage is DC3V3, and the fourth output voltage is an adjustable LDO output voltage.

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