TWM600966U - Portable power conversion device and portable uninterruptible power supply equipment - Google Patents

Abstract

A portable power conversion device is suitable for selectively electrically connecting a DC source terminal and/or an AC power source terminal. The portable power conversion device includes a box, a DC power input interface, and an AC power input interface , An inverter unit, a DC transformer unit, a DC power output interface, an AC power output interface, and a two-way AC switching unit.

Description

Portable power conversion device and portable uninterruptible power supply equipment

This creation is about a portable power conversion device and a portable uninterruptible power supply device, especially a portable power conversion device and portable uninterruptible power supply that uses a power switching unit to select the primary and secondary power sources to achieve uninterrupted power. Power off equipment.

With the flooding of various electrical products, making human life more convenient, electricity demand has become inseparable from human life. In addition, modern people pay attention to the quality of life. They like to go outdoors during holidays, such as camping, hiking, and picnics in the suburbs. They also need some electrical products when they are outdoors. Therefore, if there is a power supply method that can match various electrical products, Portable power supply devices that provide electricity will make outdoor activities more convenient. There is currently a Republic of China new patent, the announcement number is M561358, which discloses an AC power mobile power device. The AC power mobile power device includes a box and a transformer charging module that is housed in the box and electrically connected to each other. , A lithium ternary power battery module, and an inverter power supply module. The transformer charging module is converted into a direct current to be stored in a lithium ternary power battery module that is electrically connected according to the received city power, and the inverter power supply module obtains power from the lithium ternary power battery module and converts it AC current with preset voltage and frequency. With the composition of the above-mentioned components, the user can easily carry power.

However, the AC power mobile power device is equipped with the lithium ternary power battery module in the box, which not only increases the volume and weight of the AC power mobile power device itself, but also when the box space is limited, The space occupied by the inverter power supply module is relatively reduced, so the power wattage that the inverter power supply module can provide is relatively limited. It can only provide the use of small wattage electrical products, if large wattage power is required The supplied electrical products cannot be used, restricting their use.

In order to supply power to high-power electrical appliances on the market, there is often an inverter specially prepared for high-power. However, the inverter is exposed to the wiring of the electrical appliances and is easily affected by the external environment, such as being exposed to rain. It is not so safe and convenient to use, such as electric shock accidents caused by touching the contacts by unknowing persons.

Therefore, the creator of the present invention proposes a portable power conversion device and a portable uninterruptible power supply device to solve at least one of the above-mentioned shortcomings.

The portable power conversion device is suitable for selectively electrically connecting a DC source terminal and/or an AC power source terminal. The portable power conversion device includes a box, a DC power input interface, and an AC power input interface , An inverter unit, a DC transformer unit, a DC power output interface, an AC power output interface, and a two-way AC switching unit.

The box defines an accommodating space, the DC power input interface is arranged on the surface of the box, the DC power input interface is detachably electrically connected to the DC source to receive DC input power, and the AC power input interface is provided On the surface of the box, the AC power input interface is detachably electrically connected to the AC source to receive an AC input power, the inverter unit is disposed in the accommodating space, and the inverter unit includes an inverter input terminal And an inverter output terminal, the inverter input terminal is electrically connected to the DC power input interface, and the inverter unit converts the DC input power received from the DC power input interface into an AC standby power from the inverter output terminal Output, the DC transformer unit is arranged in the accommodating space, the DC transformer unit includes a DC transformer input terminal and a DC transformer output terminal, the DC transformer input terminal is electrically connected to the DC power input interface, the The DC transformer unit outputs the DC input power received from the DC transformer input terminal after DC conversion from the DC transformer output terminal, the DC power output interface is arranged on the surface of the box, and the DC power output interface The DC power input interface and the DC transformer output terminal are electrically connected, the AC power output interface is arranged on the surface of the box, the bidirectional AC switching unit is arranged in the accommodating space, and is electrically connected to the AC power input interface , The inverter output terminal and the AC power output interface, and the bidirectional AC switching unit can selectively connect one of the AC power input interface and the inverter output terminal to the AC power output interface.

Further, when the two-way AC switching unit detects that the voltage of the AC input power is within a normal range, the AC power input interface is connected to the AC power output interface, and the two-way AC switching unit detects that the voltage of the AC input power is not in the normal range. When in the range, the switching makes the inverter output terminal and the AC power output interface conductive.

Further, the portable power conversion device further includes an AC relay, a DC relay, and a main power switch. The AC relay and the DC relay are arranged in the accommodating space, and the main power switch is exposed on the surface of the box. The main power switch is electrically connected to the AC relay and the DC relay, and the DC relay is electrically connected to the DC power input interface, the inverter unit, the DC transformer unit, and the DC power output interface. The AC relay is electrically connected The AC power input interface and the two-way AC switching unit are connected. The DC relay and the AC relay are switched on or off with the opening and closing of the main power switch. When the main power switch is turned on, the DC relay and the When the AC relay is activated, the AC power input interface is connected to the bidirectional AC switching unit, the DC power input interface is connected to the inverter unit, the DC power input interface is connected to the DC transformer unit, and the DC power input interface is connected to the inverter unit. The DC power output interface is conductive. When the main power switch is turned off, the DC relay and the AC relay do not start, then the AC power input interface and the two-way AC switching unit are not conductive, and the DC power input interface and the inverter unit are not conductive , The DC power input interface and the DC transformer unit are not conductive, and the DC power input interface and the DC power output interface are not conductive.

Further, the portable power conversion device further includes a DC circuit breaker switch, the DC circuit breaker switch is disposed on the surface of the box, and the DC circuit breaker switch is electrically connected to the DC power input interface and the DC transformer input terminal And the DC power output interface, when the DC circuit breaker switch is controlled to turn on, the DC power input interface is connected to the DC transformer input terminal, the DC power input interface is connected to the DC power output interface, and the DC circuit breaker switch is When the control is turned off, the DC power input interface and the DC transformer input terminal are not conducted, and the DC power input interface and the DC power output interface are not conducted.

Further, the portable power conversion device further includes a voltage detector disposed in the accommodating space, and the voltage detector is electrically connected to the DC power input interface, the DC relay, and the DC Circuit breaker switch, and the inverter unit, when the voltage detector detects whether the DC voltage of the DC input power is lower than a safe value, if it is lower than the safe value, the voltage detector generates a signal to switch Turn off the power to the DC relay.

Further, the portable power conversion device further includes a DC source display unit, the DC source display unit is disposed on the surface of the cabinet, and the DC source display unit is electrically connected to the voltage detector and displays the value of the DC voltage .

Further, the portable power conversion device further includes an overcurrent protector disposed in the accommodating space, and the overcurrent protector is electrically connected to the DC power input interface, the DC relay, and the DC circuit breaker And the inverter unit, the overcurrent protector detects the DC current of the DC input power, and when the DC current exceeds an upper limit current value, the overcurrent protector links the DC relay to close.

Further, the portable power conversion device further includes an AC source display unit, the AC source display unit is disposed on the surface of the cabinet, the AC source display unit is electrically connected to the AC power input interface, and the AC power input When the interface receives the AC input power, it displays the voltage value of the AC input power.

Further, the portable power conversion device further includes a temperature sensing unit and a heat dissipation fan, the temperature sensing unit is arranged in the accommodating space and is electrically connected to the DC relay, the heat dissipation fan is arranged in the accommodating space, and The temperature sensing unit is electrically connected. When the DC relay is turned on and the DC input power passes through, the temperature sensing unit is activated. The temperature sensing unit senses a temperature in the containing space. When the temperature is greater than a critical temperature , The temperature sensing unit generates a heat dissipation signal, the heat dissipation fan receives the heat dissipation signal to start, and when the temperature is lower than the critical temperature, the heat dissipation fan stops rotating.

Further, the portable power conversion device further includes a spark eliminator unit disposed in the accommodating space and electrically connected to the DC power input interface, and when the DC power input interface receives the DC input power , So that a small amount of current of the DC input power flows through the spark elimination unit.

Further, the box body includes a plurality of inner wall surfaces and an insulating layer, and the insulating layer is arranged on at least one of the inner wall surfaces.

Further, the portable power conversion device further includes a DC power charging unit, the DC power charging unit is arranged in the accommodating space, the DC power input interface includes a DC positive connector and a DC negative connector, the DC power charging unit The AC power input interface is electrically connected, and a positive terminal and a negative terminal are connected in parallel. The positive terminal and the negative terminal are located in the box and are respectively electrically connected to the DC positive connector and the DC negative connector and have the same potential The DC power charging unit converts the received AC input power into DC stored power and transmits it to the DC power source through the DC power input interface.

The portable uninterruptible power supply device is suitable for selectively electrically connecting DC power generation equipment. The portable uninterruptible power supply device includes a battery and the portable power conversion as described in claim 1 to 13 In the device, the DC power input interface is electrically connected to the battery to receive the DC input power output by the battery, and the AC power input interface is detachably electrically connected to the AC power source terminal to receive the AC input power.

The portable uninterruptible power supply equipment is suitable for electrically connecting to DC power generation equipment. The portable uninterrupted power supply equipment includes a battery and the portable power conversion device as described in claim 1 to 13. The DC power input interface is electrically connected to the battery to receive the DC input power output by the battery. The DC power input interface includes a DC positive terminal and a DC negative terminal. The DC power generation device is connected in parallel with a positive terminal and a negative terminal. The positive terminal and the negative terminal are located in the box body, and are respectively electrically connected with the DC positive terminal and the DC negative terminal and have the same potential.

According to the above technical features, the following effects can be achieved:

1. The battery is outside the box and will not occupy the accommodating space. Then the accommodating space can be equipped with the inverter unit that operates at high power and is larger in size. The portable power conversion device is compared The power supply device with the same power output is not only smaller in size, lighter in weight, and easier to carry. The battery and the box are connected by a wire, and the box only needs to be moved when moving, so the size of the battery can be changed as required The power selection does not affect the convenience of moving the box.

2. If the inverter unit is not limited to the housing space, you can choose to operate the inverter unit with high power, which can start high-current electrical equipment, such as refrigerators, air conditioners, industrial welding machines, etc., for use The electrical appliances are not restricted.

3. By connecting the positive terminal and the negative terminal in parallel by the DC power charging unit, the charging connection can be simplified.

Based on the above technical features, the main effects of the portable uninterruptible power supply device of this invention will be clearly presented in the following embodiments.

Referring to the first figure, a first embodiment of the present creation of a portable uninterruptible power supply device, the portable uninterruptible power supply device can be selectively electrically connected to an AC power source according to requirements. The portable uninterruptible power supply equipment includes a battery 1 and a portable power conversion device 2. The AC power source terminal is, for example, a commercially available AC power, an AC generator, etc.

The battery 1 can be a variety of batteries, such as lead-acid batteries, deep-cycle batteries, water-free batteries, nickel-hydrogen batteries, lithium-ion batteries, lithium batteries, capacitor batteries, automotive batteries, green energy batteries, and the like. In this example, the battery is a car battery, and the voltage can be 12V/24V.

Referring to the second, fourth and sixth figures, the portable power conversion device 2 includes a box 21, a DC power input interface 22, an AC power input interface 23, an inverter unit 24, and a DC Voltage unit 25, DC power output interface 26, an AC power output interface 27, a two-way AC switching unit 28, an AC relay 29, a DC relay 30, a main power switch 31, a DC circuit breaker switch 32, a pass The current protector 33, a voltage detector 34, a DC source display unit 35, an AC source display unit 36, a temperature sensor unit 37, a cooling fan 38, and a spark elimination unit 39.

Referring to the fourth and fifth figures, the box body 21 defines an accommodating space 211, and the box body 21 is an explosion-proof and pressure-resistant rectangular box. The box body 21 includes a plurality of inner wall surfaces and an insulation layer 212. The heat insulation layer 212 is provided on at least one of the inner wall surfaces. In this example, the box body 21 has six inner wall surfaces, and the heat insulation layer 212 is provided on the inner wall surface of an upper cover. With the heat insulation layer 212, the box body 21 can be placed in a place exposed to sunlight, for example, to avoid direct sunlight to the accommodating space 211.

Referring to the first and second figures, the DC power input interface 22 is disposed on the surface of the box 21 and is detachably electrically connected to the battery 1 to receive the DC input power output by the battery 1. The DC power input interface 22 includes a DC positive terminal 221 and a DC negative terminal 222. The DC positive connector 221 and the DC negative connector 222 are electrically connected to the positive electrode and the negative electrode of the battery 1 respectively. The DC positive connector 221 and the DC negative connector 222 can be changed according to the type of connectors required to connect the battery 1 without limitation. It should be supplemented that, in this example, the battery 1 is used as the DC source terminal, and the portable power conversion device 2 can also be selectively electrically connected to other forms of the DC source terminal, such as a DC generator, solar Batteries, wind power, hydropower, tidal silicon power generation and other power generation devices.

Referring to the second and third figures, the AC power input interface 23 is disposed on the surface of the box body 21 and is detachably electrically connected to the AC power source terminal to receive an AC input power. The AC power input interface 23 includes an AC power socket, and the AC power socket can be changed according to the connection form of the AC power source end without limitation. The AC source display unit 36 is disposed on the surface of the box 21. The AC source display unit 36 is electrically connected to the AC power input interface 23, and displays the AC input when the AC power input interface 23 receives the AC input power The voltage value of the electricity.

Referring to the fourth and sixth figures, the inverter unit 24 is disposed in the accommodating space 211 and includes an inverter input terminal and an inverter output terminal. The inverter input terminal is electrically connected to the DC power input interface 22 The inverter unit 24 converts the DC input power received from the DC power input interface 22 into an AC standby power and outputs it from the inverter output terminal. An alarm 241 is provided in the inverter unit 24, and when a problem occurs in the inverter unit 24, the alarm 241 issues an alarm.

The DC transformer unit 25 is disposed in the accommodating space 211, and includes a DC transformer input terminal and a DC transformer output terminal. The DC transformer input terminal is electrically connected to the DC power input interface 22. The DC transformer The unit 25 outputs the DC input power received from the DC transformer input terminal from the DC transformer output terminal after DC conversion. The DC transformer unit 25 includes at least one of a DC step-down device and a DC step-up device. The DC step-down converter performs step-down conversion of the DC input power. The DC booster performs boost conversion on the DC input power. In this example, the direct current transformer unit 25 only includes the direct current step-down device, and the direct current input power is converted from 12V or 24V to 5V.

Referring to the second, fourth and sixth figures, the DC power output interface 26 is disposed on the surface of the box 21, and the DC power output interface 26 is electrically connected to the DC power input interface 22 and the DC transformer output terminal The DC power output interface 26 includes a plurality of universal serial bus connectors (Universal Serial Bus) 261 and a plurality of cigarette lighter connectors 262, such as the currently widely used USB Type-A connector and USB Type There are no restrictions on C connectors, etc. In this example, the universal serial bus connectors are output interfaces with a voltage of 5V, and the cigarette lighter connectors are output interfaces with a voltage of 12V.

The AC power output interface 27 is disposed on the surface of the box 21. The AC power output interface 27 includes a plurality of AC power sockets, and the AC power sockets can be changed according to the connection form of the AC electrical appliances without limitation.

The bidirectional AC switching unit 28 is disposed in the accommodating space 211, and is electrically connected to the AC power input interface 23, the inverter output terminal, and the AC power output interface 27. The bidirectional AC switching unit 28 can selectively One of the power input interface 23 and the inverter output terminal is connected to the AC power output interface 27. When the two-way AC switching unit 28 detects that the voltage of the AC input power is within a normal range, the AC power input interface 23 and When the AC power output interface 27 is turned on, and the bidirectional AC switching unit 28 detects that the voltage of the AC input power is not in the normal range, it switches to make the inverter output terminal and the AC power output interface 27 conduct, therefore, through the bidirectional AC The switching unit 28 allows the AC power output interface 27 to maintain a stable output state of uninterrupted power. When the AC power output interface 27 is electrically connected to a load, the AC power input interface 23 and the AC source are hot-swappable Function.

The AC relay 29 and the DC relay 30 are arranged in the accommodating space 211, the main power switch 31 is exposed on the surface of the box body 21, the main power switch 31 is electrically connected to the AC relay 29 and the DC relay 30, the The DC relay 29 is electrically connected to the DC power input interface 22, the inverter unit 24, the DC transformer unit 25 and the DC power output interface 26, and the AC relay 29 is electrically connected to the AC power input interface 23 and the two-way AC Switching unit 28, the AC relay 29 and the DC relay 30 are switched on or off with the opening and closing of the main power switch 31, when the main power switch 31 is turned on, the AC relay 29 and the DC relay 30 are activated, Then the AC power input interface 23 is connected to the bidirectional AC switching unit 28, the DC power input interface 22 is connected to the inverter unit 24, the DC power input interface 22 is connected to the DC transformer unit 25, and the DC power input interface 22 is connected to the DC power output interface 26. When the main power switch 31 is turned off, the AC relay 29 and the DC relay 30 do not start, then the AC power input interface 23 and the bidirectional AC switching unit 28 are not conducted, and the DC power supply The input interface 22 and the inverter unit 24 are not conductive, the DC power input interface 22 and the DC transformer unit 25 are not conductive, and the DC power input interface 22 and the DC power output interface 26 are not conductive.

The DC circuit breaker switch 32 is arranged on the surface of the box body 21 and is electrically connected to the DC power input interface 22, the DC transformer input terminal and the DC power output interface 26. When the DC circuit breaker switch 32 is controlled to be turned on , The DC power input interface 22 is connected to the DC transformer input terminal, the DC power input interface 22 is connected to the DC power output interface 26, and the DC circuit breaker switch 32 is controlled to close, the DC power input interface 22 and the The DC transformer input terminal is not conductive, and the DC power input interface 22 and the DC power output interface 26 are not conductive.

The overcurrent protector 33, the voltage detector 34, the temperature sensing unit 37, and the cooling fan 38 are disposed in the accommodating space 211, the DC source display unit 35 is disposed on the surface of the box 21, and the overcurrent The protector 33 is electrically connected to the DC power input interface 22, the DC relay 30, the DC circuit breaker switch 32 and the inverter unit 24, and the voltage detector 34 is electrically connected to the DC power input interface 22 and the DC relay 30. The DC circuit breaker switch 32, and the inverter unit 24. The following description is that when the main power switch 31 and the DC circuit breaker switch 32 are both turned on, the overcurrent protector 33 detects the DC current of the DC input power. When the DC current exceeds an upper limit current value, the overcurrent The protector 33 is linked to the DC relay 30 to close, the voltage detector 34 detects the DC voltage of the DC input power, the DC source display unit 35 is electrically connected to the voltage detector 34 and displays the value of the DC voltage. When the DC voltage is lower than a safe value, the voltage detector 34 generates a signal to cut off the power of the DC relay 30. The temperature sensing unit 37 is electrically connected to the DC relay 30, the temperature sensing unit 37 is activated, the temperature sensing unit 37 senses a temperature in the accommodating space 211, and when the temperature is greater than a critical temperature, the temperature sensing unit 37 Generate a heat dissipation signal. The cooling fan 38 is electrically connected to the temperature sensing unit 37 and is activated by receiving the cooling signal. It should be noted that the inverter unit 24 is the most heat-generating component. Therefore, an internal cooling fan is generally provided in the inverter unit 24. The cooling fan 38 in this case is an exhaust fan. The heat dissipation fan 38 and the internal heat dissipation fan are arranged close to each other. After the hot air generated by the inverter unit 24 is discharged from the internal heat dissipation fan, the hot air will then be quickly discharged from the heat dissipation fan 38 and will not easily stay in the accommodating space 211, so that The accommodating space 211 can slowly heat up.

The spark elimination unit 39 is arranged in the accommodating space 211 and is electrically connected to the DC power input interface 22. When the DC power input interface 22 receives the DC input power, a small amount of current of the DC input power flows through the The spark elimination unit 39 prevents sparks from being generated when the DC power input interface 22 is connected to the battery 1.

Referring to Figures 6 to 8, when multiple electrical appliances need to use electricity, such as a portable air conditioner 4 and charging a mobile phone 5, if the user is in an area where AC power is commercially available, Firstly, connect the AC power input interface 23 to the commercially available AC power, and then turn on the main power switch 31 (the second figure) to activate the AC relay 29 and the DC relay 30, then the AC power input interface 23 receives the AC input power, the DC power input interface 22 receives the DC input power, and the user can know the voltage value of the AC input power from the AC source display unit 36. At this time, the AC power output interface 27 and the The portable air conditioner 4 is electrically connected.

When the DC circuit breaker switch 32 is also open, the user can know the value of the DC voltage from the DC source display unit 35, the overcurrent protector 33 detects the DC current, and when the DC current is overloaded, The overcurrent protector 33 links the DC relay 30 off and the DC circuit breaker switch 32 off. The user needs to turn on the DC circuit breaker switch 32 to continue using it. To avoid the DC circuit breaker switch 32 being repeatedly closed, use People should pay attention not to use too many electrical appliances at the same time to keep the electricity safe. Then, the voltage detector 34 detects whether the DC voltage is lower than the safe value. If it is lower than the safe value, the voltage detector 34 34. Cut off the power of the DC relay 30. If the DC voltage is normal, the user can electrically connect the DC power output interface 26 to the mobile phone 5. Since the mobile phone 5 uses a voltage of 5V, the DC input power passes through the The DC transformer unit 25 transfers the voltage from the DC power output interface 26 to the mobile phone 5 after step-down conversion.

At the same time, the inverter unit 24 converts the DC input power into the AC standby power and transmits it to the two-way AC switching unit 28. The two-way AC switching unit 28 preferentially allows the AC input power to be supplied to the portable air conditioner 4, if the When the two-way AC switching unit 28 detects that the voltage of the AC input power is unstable and out of the normal range, the two-way AC switching unit 28 will switch to be powered by the AC backup power to the portable air conditioner 4. Therefore, the portable air conditioner 4 The air conditioner 4 can be used continuously and will not be affected by the instability of the commercially available alternating current. Therefore, the user can control whether to use the portable power conversion device 2 by operating the main power switch 31 (the second figure), which increases the safety of use, and the portable power conversion device 2 maintains electrical safety and The advantages of uninterrupted power.

Referring to the fourth and sixth figures, in addition, when the DC relay 30 is turned on, the temperature sensing unit 37 starts to sense the temperature in the accommodating space 211, overheating in the accommodating space 211, the cooling fan 38 starts The hot air in the accommodating space 211 is discharged, and when the temperature is lower than the critical temperature, the cooling fan 38 stops rotating. The temperature sensing unit 37 continuously senses, so as to maintain the safety of the portable power conversion device 2.

It can be seen from the above that the advantage of this creation is that the battery 1 is outside the box 21 and does not occupy the accommodating space 211, so the accommodating space 211 can be equipped with the inverter that operates at high power and is larger in size. Unit 24, the portable power conversion device 2 is not only smaller in size, lighter in weight, and more portable than power devices with the same power output. In addition, the inverter unit 24 can operate at high power, and can start high-current electrical equipment, such as refrigerators, air conditioners, industrial welding machines, etc., so that the electrical appliances used are not limited, and it also solves the problem of It is inconvenient to use the inverter which needs to be specially prepared for high-power electric appliances. The portable uninterruptible power supply device can be applied to places that are not easily accessible by the commercially available AC power, such as camping areas, mountain houses, workshops, farm houses, night markets/roadside stalls, etc. Users only need to carry the portable The power conversion device 2, when the portable power conversion device 2 is used in conjunction with the battery of the car, it can start high current for electrical equipment use. It is especially suitable for engineering personnel, stall personnel, campers, etc. use.

Referring to the second, ninth and tenth figures, a second embodiment of this creation is similar to the first embodiment, except that the portable power conversion device 2 also includes a DC power charging unit 41. The DC power charging unit 41 is disposed in the accommodating space 211 (Figure 4), and is electrically connected to the AC power input interface 23 via the relay 29, and is connected in parallel with a positive terminal and a negative terminal, the positive terminal and the negative terminal It is located in the box 21 and has the same potential as the DC positive connector 221 and the DC negative connector 222. When the relay 29 is activated and the AC power input interface 23 receives the AC input power, the DC power charging unit 41 Receives the AC input power, converts the AC input power into DC stored power and transmits it to the battery 1 (the first figure) through the DC power input interface 22. The DC power charging unit 41 connects the positive terminal and the negative terminal in parallel. At the extreme, the charging connection can be simplified. When the power supplied by the portable uninterruptible power supply device is not large, the battery 1 can be charged while supplying power, which is quite convenient.

Refer to Figure 11, a third embodiment of this creation. The portable uninterruptible power supply device is selectively electrically connected to a DC power generation device 6. In this example, the DC power generation device 6 is a solar controller , An output positive pole and an output negative pole of the solar controller are connected in parallel with the positive pole and the negative pole, and the DC power generation device 6 can supply power to charge the battery 1, or can be directly used for conversion by the portable power conversion device 2 .

Based on the description of the above-mentioned embodiments, when we can fully understand the operation, use and effects of this creation, but the above-mentioned embodiments are only the preferred embodiments of this creation, and the implementation of this creation cannot be limited by this. The scope, that is, simple equivalent changes and modifications made according to the scope of the patent application for this creation and the content of the creation description, are all within the scope of this creation.

1: battery 2: Portable power conversion device 21: Cabinet 22: DC power input interface 221: DC positive connector 222: DC negative connector 23: AC power input interface 24: inverter unit 25: DC transformer unit 26: DC power output interface 261: Universal serial bus connector 262: Cigarette lighter connector 27: AC power output interface 28: Two-way AC switching unit 29: AC relay 30: DC relay 31: Main power switch 32: DC circuit breaker switch 33: Overcurrent protector 34: voltage detector 35: DC source display unit 36: AC source display unit 37: Temperature sensing unit 38: cooling fan 39: Spark elimination unit 41: DC power charging unit 4: Belt type air conditioner 5: mobile phone

[The first figure] is a three-dimensional view illustrating a first embodiment of the portable uninterruptible power supply device of this invention. [The second figure] is a perspective view illustrating a portable power conversion device of the first embodiment. [Third figure] is a perspective view illustrating the portable power conversion device of the first embodiment. [Fourth Figure] is a perspective view illustrating a state where an upper cover of the portable power conversion device of the first embodiment is opened. [Fifth Figure] is a schematic diagram illustrating the internal state of the portable power conversion device of the first embodiment. [Figure 6] is a block diagram illustrating the portable power conversion device of the first embodiment. [Figure 7] is a perspective view illustrating the state of use of the first embodiment. [Figure 8] is a flowchart illustrating the flow of the first embodiment. [Figure 9] is a block diagram illustrating a second embodiment of the inventive portable uninterruptible power supply device. [Figure 10] is a flowchart illustrating the flow of the second embodiment. [Figure 11] is a three-dimensional view illustrating the use state of a third embodiment of the portable uninterruptible power supply device of this invention.

1: battery

2: Portable power conversion device

21: Cabinet

22: DC power input interface

221: DC positive connector

222: DC negative connector

26: DC power output interface

261: Universal serial bus connector

262: Cigarette lighter connector

27: AC power output interface

Claims (14)

A portable power conversion device is suitable for selectively electrically connecting a DC source terminal and/or an AC power source terminal. The portable power conversion device includes: A box body defines an accommodation space; A DC power input interface is arranged on the surface of the box, and the DC power input interface is detachably electrically connected to the DC source terminal to receive DC input power; An AC power input interface is arranged on the surface of the box, and the AC power input interface is electrically connected to the AC source terminal to receive an AC input power. An inverter unit is arranged in the accommodating space. The inverter unit includes an inverter input terminal and an inverter output terminal. The inverter input terminal is electrically connected to the DC power input interface. The DC input power received by the DC power input interface is converted into an AC standby power and output from the inverter output terminal; A DC transformer unit is arranged in the accommodating space. The DC transformer unit includes a DC transformer input terminal and a DC transformer output terminal. The DC transformer input terminal is electrically connected to the DC power input interface. The transformation unit outputs the DC input power received from the DC transformation input terminal from the DC transformation output terminal after DC conversion; A DC power output interface is arranged on the surface of the box, and the DC power output interface is electrically connected to the DC power input interface and the DC transformer output terminal; An AC power output interface is set on the surface of the box; and A two-way AC switching unit is arranged in the accommodating space and is electrically connected to the AC power input interface, the inverter output terminal and the AC power output interface. The two-way AC switching unit can optionally select the AC power input interface and One of the inverter output terminals is connected to the AC power output interface. For example, the portable power conversion device of claim 1, wherein when the two-way AC switching unit detects that the voltage of the AC input power is within a normal range, the AC power input interface and the AC power output interface are conducted, and the two-way AC switching When the unit detects that the voltage of the AC input power is not in the normal range, it switches to make the inverter output terminal and the AC power output interface conduct. For example, the portable power conversion device of claim 1, further comprising an AC relay, a DC relay, and a main power switch, the AC relay and the DC relay are arranged in the accommodating space, and the main power switch is exposed in the box The main power switch is electrically connected to the AC relay and the DC relay, and the DC relay is electrically connected to the DC power input interface, the inverter unit, the DC transformer unit, and the DC power output interface. The AC relay is electrically connected to the AC power input interface and the two-way AC switching unit. The DC relay and the AC relay are switched on or off with the opening and closing of the main power switch. When the main power switch is turned on, the DC When the relay and the AC relay are activated, the AC power input interface is connected to the bidirectional AC switching unit, the DC power input interface is connected to the inverter unit, the DC power input interface is connected to the DC transformer unit, and the DC power input The interface is connected to the DC power output interface. When the main power switch is turned off, the DC relay and the AC relay do not start, then the AC power input interface and the bidirectional AC switching unit are not connected, and the DC power input interface and the inverter The unit is not conductive, the DC power input interface and the DC transformer unit are not conductive, and the DC power input interface and the DC power output interface are not conductive. For example, the portable power conversion device of claim 1, further comprising a DC circuit breaker switch, the DC circuit breaker switch is arranged on the surface of the cabinet, and the DC circuit breaker switch is electrically connected to the DC power input interface and the DC transformer. When the DC circuit breaker switch is controlled to turn on, the DC power input interface and the DC transformer input terminal are conducted, the DC power input interface is conducted with the DC power output interface, and the DC circuit breaker When the switch is controlled to turn off, the DC power input interface and the DC transformer input terminal are not conducted, and the DC power input interface and the DC power output interface are not conducted. For example, the portable power conversion device of claim 4 further includes a voltage detector disposed in the accommodating space, and the voltage detector is electrically connected to the DC power input interface, the DC relay, When the DC circuit breaker switch, and the inverter unit, the voltage detector detects whether the DC voltage of the DC input power is lower than a safe value, if it is lower than the safe value, the voltage detector generates a signal , Cut off the power of the DC relay. For example, the portable power conversion device of claim 5, further comprising a DC source display unit, the DC source display unit is arranged on the surface of the cabinet, the DC source display unit is electrically connected to the voltage detector and displays the DC The value of the voltage. For example, the portable power conversion device of claim 4, further comprising an overcurrent protector, the overcurrent protector is arranged in the accommodating space, and the overcurrent protector is electrically connected to the DC power input interface, the DC relay, The DC circuit breaker switch, and the inverter unit, the overcurrent protector detects the DC current of the DC input power, and when the DC current exceeds an upper limit current value, the overcurrent protector links the DC relay to close. For example, the portable power conversion device of claim 1, further comprising an AC source display unit, the AC source display unit is disposed on the surface of the cabinet, the AC source display unit is electrically connected to the AC power input interface, and When the AC power input interface receives the AC input power, it displays the voltage value of the AC input power. For example, the portable power conversion device of claim 4, further comprising a temperature sensing unit and a cooling fan. The temperature sensing unit is arranged in the accommodating space and is electrically connected to the DC relay. The cooling fan is arranged in the accommodating space. Space and electrically connected to the temperature sensing unit. When the DC relay is turned on and the DC input power passes through, the temperature sensing unit is activated. The temperature sensing unit senses a temperature in the containing space. When the temperature is greater than one When the critical temperature is reached, the temperature sensing unit generates a heat dissipation signal, and the heat dissipation fan is activated by receiving the heat dissipation signal. When the temperature is lower than the critical temperature, the heat dissipation fan stops rotating. For example, the portable power conversion device of claim 1, further comprising a spark elimination unit, the spark elimination unit is disposed in the accommodating space, and is electrically connected to the DC power input interface, and receives the DC at the DC power input interface When power is input, a small amount of current of the DC input power flows through the spark elimination unit. According to the portable power conversion device of claim 1, wherein the box body includes a plurality of inner wall surfaces and a heat insulation layer, and the heat insulation layer is disposed on at least one of the inner wall surfaces. For example, the portable power conversion device of claim 1, further comprising a DC power charging unit, the DC power charging unit is arranged in the accommodating space, the DC power input interface includes a DC positive connector and a DC negative connector, the DC The power charging unit is electrically connected to the AC power input interface, and a positive terminal and a negative terminal are connected in parallel. The positive terminal and the negative terminal are located in the box and are electrically connected to the DC positive connector and the DC negative connector, respectively And at the same potential, the DC power charging unit converts the received AC input power into DC stored power and transmits it to the DC power source through the DC power input interface. A portable uninterrupted power supply device suitable for selectively electrically connecting a DC power generation device. The portable uninterrupted power supply device includes a battery and a portable power supply as described in claim 1 to 13 In the conversion device, the DC power input interface is electrically connected to the battery to receive the DC input power output by the battery, and the AC power input interface is detachably electrically connected to the AC power source terminal to receive the AC input power. A portable uninterrupted power supply device, suitable for electrically connecting DC power generation equipment, the portable uninterrupted power supply device comprising a battery and a portable power conversion device as described in claim 1 to 13; The DC power input interface is electrically connected to the battery to receive the DC input power output by the battery. The DC power input interface includes a DC positive connector and a DC negative connector. The DC power generation device is connected in parallel with a positive terminal and a negative terminal, The positive terminal and the negative terminal are located in the box body, and are respectively electrically connected with the DC positive terminal and the DC negative terminal and have the same potential.

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