Outdoor portable feed device

Abstract

The utility model provides an outdoor type portable feed device, which relates to the technical field of cathode protection feed testing, and comprises a box body and a box cover covering the top surface of the box body, the box body is provided with a panel recessed in the top surface of the box body, and the box body at the bottom of the panel is internally provided with a switching power supply, a control unit, an inverter, a rectifier and a storage battery. The panel is provided with an output adjusting knob, a voltage and current meter, a rectifier output wiring terminal positive electrode, a rectifier output wiring terminal negative electrode, a potential detection instrument, a potential detection wiring terminal positive electrode, a potential detection wiring terminal negative electrode, an alternating current output socket, an on / off function button, a power switch I for an inverter and a power switch II for a storage battery. The beneficial effects of the utility model are that the device achieves the function of obtaining different voltage power supplies in an outdoor cathode protection feed test, can judge the cathode protection effect of a test object according to the power-on and power-off protection potential along the line, and judges the protection range according to the fluctuation amplitude of the test potential of the test object such as a pipeline in a power-on and power-off mode.

Description

Technical Field

[0001] This utility model relates to the field of cathodic protection power supply testing technology, and in particular to an outdoor portable power supply device. Background Technology

[0002] The company has previously developed a variety of cathodic protection devices and applied for several patents, including CN209227064U, which discloses a permanent dual-group horizontal cathodic protection device for buried pipelines; CN209227063U, which discloses a vertical permanent cathodic protection anode device; and CN209195363U, which discloses a replaceable deep well and sub-deep well anode device. The above-mentioned cathodic protection devices are generally installed in the field. After a period of use, the effectiveness of the cathodic protection needs to be tested. However, it is not convenient to use electricity when conducting cathodic protection power supply tests outdoors. It is also impossible to obtain power supplies of different voltages when conducting cathodic protection power supply tests or other related work outdoors. Therefore, an outdoor portable power supply device has been proposed. Summary of the Invention

[0003] The purpose of this invention is to provide an outdoor portable power supply device that facilitates obtaining different voltage power supplies when conducting outdoor cathodic protection power supply tests or other related work.

[0004] The technical solution of this utility model is:

[0005] An outdoor portable power supply device includes a housing and a cover covering the top surface of the housing. The housing has a panel recessed from the top surface of the housing. Inside the housing at the bottom of the panel are a switching power supply, a control unit, an inverter, a rectifier, and a storage battery. The panel has an output adjustment knob, a voltage and ammeter, a positive terminal of the rectifier output terminal, a negative terminal of the rectifier output terminal, a potential detection instrument, a positive terminal of the potential detection terminal, a negative terminal of the potential detection terminal, an AC output socket, a power on / off function button, a power switch I for the inverter, and a power switch II for the storage battery.

[0006] The circuit connection is as follows: the positive terminal of the battery is connected to the positive input terminal of the inverter via a cable, and the negative terminal of the battery is connected to the negative input terminal of the inverter via a cable; the positive and negative terminals of the battery are respectively connected to the positive and negative terminals of the battery power switch II via cables.

[0007] The AC output line of the inverter is connected to the AC power input line of the rectifier and the switching power supply, respectively, and is also connected to the power terminals of the voltage and current meter, the potential detection instrument, and the AC power output socket; the input and output lines of the inverter are connected to the input and output of the inverter power switch I via cables.

[0008] The 24V DC output line of the switching power supply is connected to the power input line of the control unit, and the 12V DC output line of the switching power supply is connected to the power terminal of the output adjustment knob. The output adjustment knob is used to adjust the output parameters of the device, including voltage, current, temperature, etc. The positive and negative terminals of the output adjustment knob are connected to the positive and negative voltage signal terminals of the rectifier. The 24V DC output line of the switching power supply is connected to the input terminal of the power on / off function button. The output terminal of the power on / off function button is connected to the control signal input terminal of the control unit.

[0009] The control signal output terminal of the control unit is connected to the input terminal of the high-voltage DC contactor control coil on the output side of the rectifier; the output terminal of the high-voltage DC contactor control coil on the output side of the rectifier is connected to the negative terminal of the switching power supply; the connector of the negative terminal of the rectifier output terminal located inside the chassis is connected to the negative output terminal of the rectifier via a cable connection; the output terminal of the high-voltage DC contactor control coil on the output side of the rectifier is connected to the negative terminal of the switching power supply.

[0010] The connector inside the chassis at the positive terminal of the rectifier output terminal mounted on the panel is connected to the negative terminal of the rectifier output and the positive terminals of the voltage and ammeter via cable connections; the connector inside the chassis at the negative terminal of the rectifier output terminal is connected to the negative terminals of the voltage and ammeter via cable connections.

[0011] The positive terminal of the potential detection terminal is located inside the chassis and is connected to the positive terminal for signal detection in the potential detection instrument via the connector and cable connection; the negative terminal of the potential detection terminal is connected to the negative terminal for signal detection in the potential detection instrument via the connector and cable connection inside the chassis.

[0012] Furthermore, the battery is a rechargeable battery, and the panel is provided with a charging socket for the battery, with the positive and negative terminals of the battery connected to the charging socket via cables.

[0013] Furthermore, the rectifier is a voltage-controlled type, and therefore both the positive and negative terminals of the rectifier output terminals are voltage-controlled.

[0014] Furthermore, the positive and negative output terminals of the output adjustment knob are connected to the positive and negative voltage signal terminals of the rectifier after passing through a voltage divider and current limiting resistor with calculated resistance values.

[0015] Furthermore, the lid and body are connected by hinges;

[0016] Furthermore, the box body is equipped with hydraulic support rods connecting the box cover and the box body inside the box body and on both sides of the panel. The two ends of the hydraulic support rods are connected to the box cover and the box body by bolt fittings.

[0017] One side of the bottom of the box is equipped with omnidirectional wheels, and the other side of the bottom of the box is equipped with directional wheels. The omnidirectional wheels and directional wheels are connected to the box by bolts. The wheel surfaces of the omnidirectional wheels and directional wheels are made of wear-resistant rubber or other non-metallic materials, and the other parts of the omnidirectional wheels and directional wheels are made of corrosion-resistant metal materials.

[0018] The box is equipped with handles on both the left and right sides; the handles are connected to the box by rivets or bolts, and the pull ring on the surface of the handle is equipped with a thickened non-metallic hand guard; the box cover, box body and handle are all made of stainless steel.

[0019] Furthermore, cooling fans are provided on both sides of the panel, the power cord of the cooling fan is connected to the output side of the power switch I for the inverter, the cooling fan is adjacent to the hydraulic support rods at both ends, and there are several cooling fans on each side, preferably three.

[0020] The advantages and positive effects of this utility model are:

[0021] This outdoor portable power supply unit achieves portability outdoors. Thanks to two omnidirectional wheels and two directional wheels on the bottom of the case, it is easy to move. Once moved to the designated location, the directional wheels secure the unit. Opening the case lid and connecting the hydraulic support rod to the case body via bolts further supports the lid, facilitating subsequent operations. Handles are located on both the left and right sides of the case for easy dragging.

[0022] This outdoor portable power supply device features an internal rechargeable battery that provides independent temporary power to the cathodic protection system in situations where no other power source is available outdoors. Through an inverter, rectifier, control module, and output adjustment knob, the fixed battery voltage can be changed to an adjustable voltage as needed. It also includes a power-on / off testing function and, in conjunction with the control module, outputs AC or DC voltage signals for the set voltage. The inclusion of voltage and current meters, as well as potential sensors, facilitates observation of the output signal settings, enabling the measurement of the cathodic protection range and effectiveness. This provides a testing basis for system design, avoiding resource waste caused by blind construction. Furthermore, the above functions are achieved through the following scheme:

[0023] The other end of the anode cable is connected to the positive terminal of the voltage-controlled rectifier output terminal, and the other end of the cathode cable is connected to the negative terminal of the rectifier output terminal. A copper sulfate reference electrode is buried in the soil within 1 meter of the connection point between the test object, such as the pipeline and the cathode cable. The copper sulfate reference electrode is connected to the positive terminal of the potential detection terminal via a cable, and the negative terminal of the potential detection terminal is connected to the negative terminal of the rectifier output terminal on the panel. Turn on the inverter power switch I on the inverter and the battery power switch II on the battery. Adjust the output adjustment knob to the set value, such as -1.2V, as displayed on the potential detection instrument. The operator carries a multimeter and a portable copper sulfate reference electrode to detect and record the potential of the fed object, such as the pipeline. This enables the acquisition of different voltage power supplies during outdoor cathodic protection power supply testing or other related work.

[0024] When it is necessary to test the power failure protection potential or perform close-interval potential testing, the power on / off function button can be pressed to start the power on / off test function. At this time, the outdoor portable power supply equipment works with a certain power on / off cycle, such as 12 seconds on and 3 seconds off, or other set time interval modes. The staff can judge the cathodic protection effect of the test object, such as the pipeline, based on the power on / off protection potential along the line, and judge the protection range based on the fluctuation range of the test potential of the test object, such as the pipeline, under the power on / off mode.

[0025] By using local storage and remote transmission and control devices, data can be saved locally and transmitted remotely, and remote wireless control and display can be achieved. With the help of remote systems and local signal measurement modules, remote monitoring can be realized.

[0026] The battery is a rechargeable battery, which is easy to charge.

[0027] Cooling fans are installed on both sides of the panel to facilitate the removal of hot air from the inside of the enclosure and prevent overheating and burn-out.

[0028] Outdoor portable power supply devices can also be used as simulated interference sources to provide output interference signals, detect the potential of test objects such as pipes, determine the disturbance of test objects under interference conditions, and provide a basis for formulating reasonable interference prevention and control solutions. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the external structure of the outdoor portable power supply device of this utility model.

[0030] Figure 2 This is a schematic diagram of the internal structure of the outdoor portable power supply device of this utility model.

[0031] In the picture:

[0032] 1. Lid 2. Body 3. Casters

[0033] 4. Directional casters 5. Handles 6. Hinges

[0034] 7. Hydraulic support rod; 8. Cooling fan; 9. Battery charging socket.

[0035] 10. AC power output socket 11. Power on / off function button 12. Power switch I

[0036] 13. Power switch II 14. Potential detection instrument 15. Positive terminal of potential detection terminal 16. Negative terminal of potential detection terminal 17. Negative terminal of rectifier output terminal 18. Positive terminal of rectifier output terminal

[0037] 19. Voltmeter and ammeter; 20. Output adjustment knob; 21. Control unit

[0038] 22. Switching power supply; 23. Inverter; 24. Battery

[0039] 25. Panel 26. Rectifier Detailed Implementation

[0040] This embodiment discloses an outdoor portable power supply device, including a housing 2 and a cover 1 covering the top surface of the housing 2. The housing 2 has a panel 25 recessed from the top surface of the housing 2. Inside the housing 2 at the bottom of the panel 25, there are a switching power supply 22, a control unit 21, an inverter 23, a rectifier 26, and a storage battery 24. The panel 25 is provided with an output adjustment knob 20, a voltage and current meter 19, a positive terminal 18 of the rectifier output terminal, a negative terminal 17 of the rectifier output terminal, a potential detection instrument 14, a positive terminal 15 of the potential detection terminal, a negative terminal 16 of the potential detection terminal, an AC output socket 10, a power on / off function button 11, a power switch I 12 for the inverter 23, and a power switch II 13 for the storage battery 24.

[0041] Among them, the inverter 23, rectifier 26, battery 24, and switching power supply 22 were all purchased from the market. The switching power supply 22, also known as a switching power supply or switching converter, is a high-frequency power conversion device. Its function is to convert a standard voltage into the voltage or current required by the user through different architectures.

[0042] The control unit 21 receives an electrical signal from the 11 power-on / power-off function button, triggers an internal interrupt program, and sends a specific signal to the high-voltage contactor control coil at the end of the rectifier, so that the rectifier is powered on for a certain period of time and powered off for a certain period of time.

[0043] The output adjustment knob 20 is a commercially available control component commonly used in electronic instruments to adjust specific parameters of the instrument output, such as voltage, current, frequency, or power. This device uses a 10-turn precision adjustable resistor to achieve this.

[0044] The potential detection instrument 14 is purchased from the market and is mainly used to measure the voltage difference across low-value resistors such as the resistance of the connecting conductor between various electrical equipment and the grounding grid, the DC resistance of transformers, and the contact resistance of switch and socket contacts.

[0045] The voltage and current meters 19 are voltmeters and voltmeters, and the panel 25 displays a dial for display purposes;

[0046] The positive terminal of the battery 24 is connected to the positive input terminal of the inverter 23 via a cable, and the negative terminal of the battery 24 is connected to the negative input terminal of the inverter 23 via a cable; the positive and negative terminals of the battery 24 are connected to the positive and negative terminals of the ON terminal of the power switch II 13 via cables respectively.

[0047] The circuit connection is as follows: the AC output line of the inverter 23 is connected to the AC power input lines of the rectifier 26 and the switching power supply 22, respectively, and is also connected to the power terminals of the voltage and current meter 19, the potential detection instrument 14, and the AC power output socket 10; the input and output lines of the inverter 23 are connected to the input and output of the power switch I12 of the inverter 23 via cables.

[0048] The 24V DC output line of the switching power supply 22 is connected to the power input line of the control unit 21, and the 12V DC output line of the switching power supply 22 is connected to the power terminal of the output adjustment knob 20. The output adjustment knob 20 is used to adjust the output parameters of the device, including voltage, current, temperature, etc. The positive and negative output terminals of the output adjustment knob 20 are connected to the positive and negative voltage signal terminals of the rectifier 26. The 24V DC output line of the switching power supply 22 is connected to the input terminal of the power on / off function button 11. The output terminal of the power on / off function button 11 is connected to the control signal input terminal of the control unit 21.

[0049] The control signal output terminal of the control unit 21 is connected to the input terminal of the high-voltage DC contactor control coil on the output side of the rectifier 26; the output terminal of the high-voltage DC contactor control coil on the output side of the rectifier 26 is connected to the negative terminal of the switching power supply 22; the connector of the negative terminal 17 of the rectifier output terminal located inside the chassis is connected to the negative output terminal of the rectifier 26 via a cable connection; the output terminal of the high-voltage DC contactor control coil on the output side of the rectifier 26 is connected to the negative terminal of the switching power supply 22.

[0050] The connector of the positive terminal 18 of the rectifier output terminal mounted on the panel 25, located inside the chassis, is connected to the negative terminal of the rectifier 26 and the positive terminal of the voltage and current meter 19 via a cable connection; the connector of the negative terminal 17 of the rectifier output terminal, located inside the chassis, is connected to the negative terminal of the voltage and current meter 19 via a cable connection.

[0051] The positive terminal 15 of the potential detection terminal is located inside the chassis and is connected to the positive terminal for signal detection in the potential detection instrument 14 via the connector and cable connection; the negative terminal 16 of the potential detection terminal is connected to the negative terminal for signal detection in the potential detection instrument 14 via the connector and cable connection inside the chassis.

[0052] Furthermore, the battery 24 is a rechargeable battery 24, and the panel 25 is provided with a charging socket 9 for the battery 24. The positive and negative terminals of the battery 24 are connected to the charging socket through cables.

[0053] Furthermore, the rectifier 26 is a voltage-controlled type, and therefore the positive terminal 18 and the negative terminal 17 of the rectifier output terminal are both voltage-controlled.

[0054] Furthermore, the positive and negative output terminals of the output adjustment knob 20 are connected to the positive and negative voltage signal terminals of the rectifier 26 after passing through a voltage divider and current limiting resistor with calculated resistance values.

[0055] Furthermore, the lid 1 and the body 2 are connected by a hinge 6;

[0056] Furthermore, the inside of the box body 2 and both sides of the panel 25 are provided with hydraulic support rods 7 that connect the box cover 1 and the box body 2. The two ends of the hydraulic support rods 7 are connected to the box cover 1 and the box body 2 by bolt fittings.

[0057] One side of the bottom of the box 2 is provided with a caster wheel 3, and the other side of the bottom of the box 2 is provided with a directional wheel 4. The caster wheel 3 and the directional wheel 4 are connected to the box 2 by bolts. The wheel surface of the caster wheel 3 and the directional wheel 4 is made of wear-resistant rubber or other non-metallic material, and the other parts of the caster wheel 3 and the directional wheel 4 are made of corrosion-resistant metal material.

[0058] The left and right sides of the box body 2 are provided with handles 5; the handles 5 are connected to the box body 2 by rivets or bolts, and the pull ring on the surface of the handle 5 is provided with a thickened non-metallic hand guard; the box cover 1, the box body 2 and the handles 5 are all made of stainless steel.

[0059] Furthermore, cooling fans 8 are provided on both sides of the panel 25. The power cord of the cooling fan 8 is connected to the output side of the power switch I12 of the inverter 23. The cooling fan 8 is close to the hydraulic support rods 7 at both ends, and there are several cooling fans 8 on each side, preferably three.

[0060] Furthermore, a storage and remote transmission control device is installed inside the housing 2, and the storage and remote transmission control device is electrically connected to the potential detection instrument 14 and the voltage and current meter 19.

[0061] The operating steps for using this device are as follows:

[0062] (1) Turn off the inverter 23 power switch I12 on the inverter 23 and turn off the battery 24 power switch II13 on the battery 24.

[0063] (2) Open the box cover 1 and use the dedicated charger to connect the storage battery 24 and charge the storage battery 24 using the charging socket 9 and charging cable.

[0064] (3) After the battery is fully charged, disconnect the charging cable, close the box cover 1, and transport the outdoor portable power supply device to the testing location by vehicle.

[0065] (4) Professionals push this outdoor portable power supply device to the selected position. Since the bottom of the box 2 is equipped with two universal wheels 3 and two directional wheels 4, it is easy to move. After moving to the designated position, the position is fixed by the directional wheels 4. Open the box cover 1 and connect the hydraulic support rod 7 to the box cover 1 and the box 2 with bolt fittings to further support the box cover 1.

[0066] (5) Install and test the anode grounding electrode and anode cable; galvanized angle iron is recommended for the anode grounding electrode.

[0067] (6) Install the cathode cable and connect it to the object not being tested, such as a pipe;

[0068] (7) The other end of the anode cable is connected to the positive terminal 18 of the voltage-controlled rectifier output terminal on the panel 25 of the outdoor portable power supply device;

[0069] (8) The other end of the cathode cable is connected to the negative terminal 17 of the rectifier output wiring terminal on panel 25 of this outdoor portable power supply device;

[0070] (9) Test objects such as copper sulfate reference electrodes are buried in the soil within 1 meter of the connection point between the pipeline and the cathode cable;

[0071] (10) The copper sulfate reference electrode is connected to the positive terminal 15 of the potential detection wiring terminal on the panel 25 of this outdoor portable power supply device via a cable;

[0072] (11) The negative terminal 16 of the potential detection terminal installed on the panel 25 is connected to the negative terminal 17 of the rectifier output terminal on the panel 25;

[0073] (12) Turn on the inverter 23 power switch I12 on the inverter 23 and turn on the battery 24 power switch II13 on the battery 24.

[0074] (13) Adjust the output adjustment knob 20 to the value displayed on the potential detection instrument 14 to the set value, such as -1.2V;

[0075] (14) Staff members carry multimeters and portable copper sulfate reference electrodes to detect and record the potential of the power supply object, such as the pipeline.

[0076] (15) When it is necessary to detect the power failure protection potential or perform close-interval potential detection, the power on / off function button 11 can be pressed to start the power on / off test function. At this time, the outdoor portable power supply equipment works with a certain power on / off cycle, such as 12 seconds of power on and 3 seconds of power off, or other set time interval modes. The staff can judge the cathodic protection effect of the test object such as the pipeline based on the power on / off protection potential along the line, and judge the protection range based on the fluctuation range of the test potential of the test object such as the pipeline under the power on / off mode.

[0077] (16) The outdoor portable power supply device can also be used as a simulated interference source to provide output interference signals, detect the potential of the test object such as the pipeline, judge the disturbance of the test object under interference conditions, and provide a basis for formulating a reasonable interference prevention and control plan. In addition, this outdoor portable power supply device can not only be used in the above scenarios, but also as a household battery to provide power for outdoor picnics and other scenarios. Furthermore, this device can be matched with storage and remote transmission devices and computer remote software to realize remote monitoring and remote control.

[0078] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An outdoor portable power supply device, characterized in that: The device includes a housing and a cover covering the top surface of the housing. The housing has a panel recessed into the top surface of the housing. Inside the housing at the bottom of the panel are a switching power supply, a control unit, an inverter, a rectifier, and a battery. The panel has an output adjustment knob, a voltage and ammeter, a positive terminal of the rectifier output terminal, a negative terminal of the rectifier output terminal, a potential detection instrument, a positive terminal of the potential detection terminal, a negative terminal of the potential detection terminal, an AC output socket, a power on / off function button, a power switch I for the inverter, and a power switch II for the battery. The circuit connection is as follows: The positive terminal of the battery is connected to the positive input terminal of the inverter via a cable, and the negative terminal of the battery is connected to the negative input terminal of the inverter via a cable; the positive and negative terminals of the battery are respectively connected to the positive and negative terminals of the battery power switch II via cables. The AC output line of the inverter is connected to the AC power input line of the rectifier and the switching power supply, respectively, and is also connected to the power terminals of the voltage and current meter, the potential detection instrument, and the AC power output socket; the input and output lines of the inverter are connected to the input and output of the inverter power switch I via cables. The 24V DC output line of the switching power supply is connected to the power input line of the control unit, and the 12V DC output line of the switching power supply is connected to the power terminal of the output adjustment knob. The output adjustment knob is used to adjust the output parameters of the device, including voltage, current, and temperature. The positive and negative terminals of the output adjustment knob are connected to the positive and negative voltage signal terminals of the rectifier. The 24V DC output line of the switching power supply is connected to the input terminal of the power on / off function button. The output terminal of the power on / off function button is connected to the control signal input terminal of the control unit. The control signal output terminal of the control unit is connected to the input terminal of the high-voltage DC contactor control coil on the output side of the rectifier; the output terminal of the high-voltage DC contactor control coil on the output side of the rectifier is connected to the negative terminal of the switching power supply; the connector of the negative terminal of the rectifier output terminal located inside the chassis is connected to the negative output terminal of the rectifier via a cable connection; the output terminal of the high-voltage DC contactor control coil on the output side of the rectifier is connected to the negative terminal of the switching power supply. The connector inside the chassis at the positive terminal of the rectifier output terminal mounted on the panel is connected to the negative terminal of the rectifier output and the positive terminals of the voltage and ammeter via cable connections; the connector inside the chassis at the negative terminal of the rectifier output terminal is connected to the negative terminals of the voltage and ammeter via cable connections. The positive terminal of the potential detection terminal is located inside the chassis and is connected to the positive terminal for signal detection in the potential detection instrument via the connector and cable connection; the negative terminal of the potential detection terminal is connected to the negative terminal for signal detection in the potential detection instrument via the connector and cable connection inside the chassis.

2. The outdoor portable power supply device according to claim 1, characterized in that: The battery is a rechargeable battery, and the panel is provided with a charging socket for the battery. The positive and negative terminals of the battery are connected to the charging socket via cables. The rectifier is voltage-controlled, and therefore both the positive and negative terminals of the rectifier output terminals are voltage-controlled.

3. The outdoor portable power supply device according to claim 2, characterized in that: The lid and body of the box are connected by hinges; The box body is equipped with hydraulic support rods on both sides of the panel, which connect the box cover and the box body. The two ends of the hydraulic support rods are connected to the box cover and the box body by bolt fittings.

4. An outdoor portable power supply device according to claim 3, characterized in that: One side of the bottom of the box is equipped with omnidirectional wheels, and the other side of the bottom of the box is equipped with directional wheels. The omnidirectional wheels and directional wheels are connected to the box by bolts. The wheel surfaces of the omnidirectional wheels and directional wheels are made of wear-resistant rubber.

5. An outdoor portable power supply device according to claim 3, characterized in that: The box is equipped with omnidirectional wheels on one side of its bottom and directional wheels on the other side of its bottom. The omnidirectional wheels and directional wheels are connected to the box by bolts. The surfaces of the omnidirectional wheels and directional wheels are made of non-metallic material.

6. An outdoor portable power supply device according to claim 5, characterized in that: The box is equipped with handles on both the left and right sides; the handles are connected to the box by rivets or bolts, and the pull ring on the surface of the handle is equipped with a thickened non-metallic hand guard; the box cover, box body and handle are all made of stainless steel.

7. An outdoor portable power supply device according to claim 6, characterized in that: Cooling fans are provided on both sides of the panel. The power cord of the cooling fan is connected to the output side of the power switch I of the inverter. The cooling fan is located close to the hydraulic support rods at both ends.

8. An outdoor portable power supply device according to claim 7, characterized in that: The number of cooling fans on each side is several.

9. An outdoor portable power supply device according to any one of claims 1-8, characterized in that: The enclosure is equipped with a storage and remote transmission / control device, which is electrically connected to a potential detection instrument, a voltage meter, and an ammeter.

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