Portable granary power supply circuit and power supply device

Abstract

The utility model discloses a portable granary power supply circuit and power supply device of portable power supply technical field, this power supply circuit includes the storage unit and with the alternating current branch and direct current branch of storage unit connection, and the alternating current branch is used for giving motor equipment power supply, and in turn includes voltage inverter, alternating current inverter and first output loop, and the first output loop is provided with control switch, thyristor soft driver and motor equipment input, through adding the remote control soft starter at the alternating current output end of storage unit, can reduce the starting voltage in starting a moment when using high -power hammer, reduces the impact of motor equipment start -up to the circuit, avoids the circuit automatic protection because of starting load too big, and thyristor soft driver passes through accurate control switch tube conduction angle, realizes 1 second in -place complete voltage from 0V smooth rise to target value's 90%, compared with traditional starting mode can reduce 80% transient impact current.

Description

Technical Field

[0001] This utility model relates to the field of portable power supplies, specifically to a portable power supply circuit and power device for grain warehouses. Background Technology

[0002] Inside grain storage silos, it is necessary to periodically use samplers to extract small samples from the grain piles to obtain a representative sample of the overall quality of the grain. This allows for testing of quality, safety, and hygiene items such as moisture, impurities, defective grains, heavy metals, and mycotoxins. For large grain silos, mechanical automatic samplers are generally used, driven by a motor. These samplers require a 220V AC power supply to drive the motor. Existing samplers, when powered, experience excessively high starting voltage, which can lead to excessive stress on the motor's circuitry during startup and trigger the circuit's automatic protection mechanism due to excessive starting load. Utility Model Content

[0003] The purpose of this utility model is to provide a portable grain warehouse power supply circuit and power supply device, which solves the power supply problem of existing grain warehouse samplers.

[0004] This utility model achieves the above objectives through the following technical solutions: A portable grain storage power supply circuit includes a power storage unit and a circuit connected to the power storage unit. An AC branch circuit, used to supply power to motor equipment, includes a voltage inverter, an AC inverter, and a first output circuit in sequence. The first output circuit is equipped with a control switch, a thyristor soft driver, and an input terminal for motor equipment. The DC branch is used for charging the energy storage unit and lighting, including the charging terminal and the lighting unit.

[0005] As a preferred embodiment of this utility model, the voltage inverter is equipped with a relay, and a relay switch is also provided on the DC branch for control and relay on / off. In this embodiment, a relay is provided on the voltage inverter, which is used to control the on / off of a large current with a small current, and safely switch the large current circuit.

[0006] As a preferred embodiment of this utility model, the AC inverter is a sine wave inverter, which can provide stable output and does not damage electrical appliances.

[0007] As a preferred embodiment of this utility model, the output terminal of the AC inverter is further provided with a second output circuit, the second output circuit including a cooling fan, the second output circuit is powered on and started when the inverter is started, and is used to start the cooling fan for heat dissipation.

[0008] As a preferred embodiment of this utility model, the control switch includes a remote trigger switch and a remote controller for controlling the remote trigger switch. By setting the remote trigger switch, it is convenient to start the motor equipment.

[0009] As a preferred embodiment of this utility model, the lighting unit includes an LED front light, an LED rear light, and a lighting switch for controlling the on / off state. Two sets of LED lights are installed on the DC branch to provide high-brightness lighting in certain areas.

[0010] This utility model also proposes a portable grain storage power supply device, including a portable casing and a power supply circuit as described above. The beneficial effects of this utility model are: a soft starter is added to the AC output terminal of the energy storage unit, which reduces the starting voltage at the moment of startup when using a high-power sampler, reducing the impact on the circuit during motor startup and preventing automatic circuit protection due to excessive starting load, thus achieving soft starting of the motor. The thyristor soft driver, through precise control of the switching transistor's conduction angle, enables the voltage to smoothly rise from 0V to 90% of the target value within 1 second, reducing transient inrush current by 80% compared to traditional starting methods. Attached Figure Description

[0011] Figure 1 This is a circuit diagram of the present invention; Figure 2 This is a schematic diagram of the power supply device of this utility model; Figure 3 This is a circuit diagram of Embodiment 2 of the present invention; in the diagram: 1, housing; 2, light lamp; 3, heat dissipation groove; 4, light lamp switch. Detailed Implementation

[0012] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0013] Example 1

[0014] like Figure 1-2 As shown, a portable grain storage power supply circuit includes a power storage unit and an AC branch and a DC branch connected to the power storage unit. The AC branch is used to supply power to motor equipment and includes a voltage inverter, an AC inverter and a first output circuit in sequence. The first output circuit is provided with a control switch, a thyristor soft driver and an input terminal for the motor equipment. The DC branch is used for charging the power storage unit and lighting, and includes a charging terminal and a lighting unit.

[0015] The thyristor soft driver precisely controls the switching transistor's conduction angle, enabling the voltage to smoothly rise from 0V to 90% of the target value within one second, reducing transient inrush current by 80% compared to traditional starting methods. The energy storage unit's voltage range is 37.8V-58.8V. During charging, a 58.8V adapter is connected to the charging terminal. The adapter converts the 220V AC mains power to DC power to charge the energy storage unit.

[0016] In this embodiment, a DC circuit and an AC circuit are connected through an energy storage unit. The AC circuit provides sufficient power and voltage to the motor equipment by setting up a voltage inverter and an AC inverter. The output voltage of the AC inverter is 220V and the maximum power is 6000W, which can meet the working current requirements of the sampler. Furthermore, a thyristor soft driver is set at the input end of the motor equipment to realize the soft start of the motor equipment. This allows the motor equipment to gradually increase its speed, avoiding the damage to the motor equipment itself caused by the huge inrush current during direct start-up, thus extending the equipment's lifespan. The internal circuit is basically a low-voltage circuit, with only the 220V power socket being a high-voltage circuit, making it relatively safe.

[0017] Preferably, the output terminal of the AC inverter is further provided with a second output circuit, which includes a cooling fan. The second output circuit is powered on and started when the inverter starts up, and is used to start the cooling fan for heat dissipation.

[0018] This utility model also proposes a portable grain storage power supply device, including a portable outer casing 1 and a power supply circuit as described above. Please refer to [link / reference needed]. Figure 2 The power supply device includes a housing 1, a light 2 mounted on the housing 1, and a light switch 4. The housing 1 is provided with heat dissipation grooves for heat dissipation.

[0019] Example 2

[0020] like Figure 3 As shown, in this embodiment, based on embodiment 1, the voltage inverter is equipped with a relay, and a relay switch is also provided on the DC branch for controlling the relay on and off. The relay switch is powered through the DC branch to control the voltage inverter on and off through the relay, using a small current to control the on and off of a large current, and safely switching the large current circuit.

[0021] Preferably, the AC inverter is a constant current sine wave inverter, which can provide stable output without damaging electrical appliances. In addition, the energy storage unit uses a 2700WH automotive aluminum-cased power lithium battery. The lithium battery protection board has intelligent temperature control, as well as overcharge, over-discharge, overvoltage, overcurrent, and short circuit protection functions. In actual operation, it can meet the sampling operations of multiple grain silos.

[0022] Preferably, the control switch includes a remote trigger switch and a remote controller for controlling the remote trigger switch. By setting the remote trigger switch, it is convenient to start the motor equipment remotely.

[0023] To provide localized high-brightness lighting, as a further preferred embodiment, the lighting unit includes an LED front light, an LED rear light, and a lighting switch for controlling the on / off state.

[0024] In use, activating the relay switch starts the voltage inverter, sine wave inverter, and cooling fan, while activating the lighting switch provides illumination. The LED front and rear lights provide a wide illumination range. During sampling, activating the remote control triggers the remote control switch, which in turn activates the thyristor soft driver to soft-start the motor and equipment input, initiating the sampling operation. The above embodiments only illustrate several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A portable power supply circuit for grain storage, characterized in that, Includes energy storage units and those connected to the energy storage units. An AC branch circuit, used to supply power to motor equipment, includes a voltage inverter, an AC inverter, and a first output circuit in sequence. The first output circuit is equipped with a control switch, a thyristor soft driver, and an input terminal for motor equipment. The DC branch is used for charging the energy storage unit and lighting, including the charging terminal and the lighting unit.

2. The portable grain storage power supply circuit according to claim 1, characterized in that, The voltage inverter is equipped with a relay, and a relay switch is also provided on the DC branch for control and relay on / off.

3. The portable grain storage power supply circuit according to claim 1, characterized in that, The AC inverter is a sine wave inverter.

4. A portable grain storage power supply circuit according to claim 3, characterized in that, The output terminal of the AC inverter is also provided with a second output circuit, which includes a cooling fan.

5. A portable grain storage power supply circuit according to claim 1, characterized in that, The control switch includes a remote trigger switch and a remote controller for controlling the remote trigger switch.

6. A portable grain storage power supply circuit according to claim 1, characterized in that, The lighting unit includes an LED front light, an LED rear light, and a lighting switch for controlling the on / off state.

7. A portable grain storage power supply device, characterized in that, It includes a portable housing (1) and a power supply circuit as described in any one of claims 1-6.

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