CN212012459U - Alternating current and direct current power supply switching device - Google Patents

Abstract

The utility model discloses a AC/DC power switching device belongs to the electric energy conversion device field, including battery, conversion box, electric energy output terminal line is used for exporting interchange or direct current and is connected with the load. The conversion box comprises a main control chip module, a relay group, a key, an inverter module, a 2P wiring terminal, an indicator light and a DC-DC conversion module group, wherein the storage battery is electrically connected with the conversion box, and the conversion box is connected with the electric energy output terminal in a sub-line mode. Carry out the contravariant respectively for traditional battery and export the alternating current or use DC-DC conversion equipment's mode to say, discern the user needs to export the alternating current or the direct current through main control chip module to pass through the pilot lamp with user's selection and show, the operation of being convenient for, and the structure is small and exquisite light, makes things convenient for outdoor environment's use. For the multiple output device of electric energy on the existing market, the utility model discloses the cost is lower, convenient to popularize and use more.

Description

Alternating current and direct current power supply switching device

Technical Field

The utility model belongs to the electric energy conversion equipment field, concretely relates to alternating current and direct current power switching device.

Background

With the progress of technological progress and the transformation of production and living styles of people, electric energy conversion devices are widely used at present. The conventional electric energy conversion devices include an AC-AC conversion device, an AC-DC conversion device (i.e., a rectifying device), a DC-DC conversion device, and a DC-AC conversion device (i.e., an inverting device), which basically meet the requirements of people in production and life. In places such as the outdoors where electricity is extremely inconvenient to use, people usually use portable storage batteries for power supply, and in occasions such as outdoor scientific investigation and outdoor sports, people directly switch on inverters on two electrodes of the storage batteries to convert alternating current into direct current when needing to use the alternating current; when people use direct current, the voltage of a storage battery is often required to be converted by using a DC-DC conversion device for use. However, the operation is troublesome in the process of using the electric energy of the storage battery for conversion, and the equipment is large in size and inconvenient to carry in the outdoor environment, thereby bringing great inconvenience to outdoor users.

SUMMERY OF THE UTILITY MODEL

For the outdoor inconvenient problem of power consumption when using the battery to carry out the electric energy conversion that provides among the above-mentioned background art of solution, the utility model provides an alternating current and direct current power switching device has advantages such as small, conveniently carry, the operation of being convenient for.

In order to achieve the above object, the utility model provides a following technical scheme: the alternating current and direct current power supply switching device comprises a storage battery, a conversion box and an electric energy output terminal line, wherein the conversion box comprises a main control chip module, a relay group, a key, an inverter module, a 2P wiring terminal, an indicator light and a DC-DC conversion module group, the storage battery is electrically connected with the conversion box, the conversion box is connected with an electric energy output terminal line, the relay group comprises a relay I and a relay II, and the DC-DC conversion module group comprises a DC-DC conversion module I and a DC-DC conversion module II.

Preferably, the positive end and the negative end of the storage battery are electrically connected with the 2P wiring terminal in the conversion box, the power terminal of the DC-DC conversion module I is electrically connected with the 2P wiring terminal in the conversion box, and the output voltage of the DC-DC conversion module I is constant at 5V.

Preferably, the power input end of the main control chip module is electrically connected with the output end of the DC-DC conversion module I, VCC of the main control chip module is connected with V + of the DC-DC conversion module I, GND of the main control chip module is connected with V-of the DC-DC conversion module I, and the main control chip module is a STC89C52 minimum system board.

Preferably, the key is electrically connected with the main control chip module, and the key comprises an AC key and a DC key.

Preferably, the electric energy input end of the inverter module is electrically connected with the 2P wiring terminal in the conversion box, the output end of the inverter module is electrically connected with the electric energy output end sub-line after passing through the relay I, and the control end of the relay I is connected with the I/O pin of the main control chip module.

Preferably, the DC-DC conversion module II is electrically connected with the electric energy output terminal line through a relay II, and the control end of the relay II is connected with the I \ O pin of the main control chip module.

Preferably, the indicator light includes an AC indicator light and a DC indicator light.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses for traditional battery carries out the contravariant respectively and exports alternating current or uses DC-DC conversion equipment's mode to say, need export the alternating current through the main control chip module to the user and still discern the direct current to pass through the pilot lamp with user's selection and show, and the device has combined the transformation of two kinds of electric energy forms of DC-DC conversion and electric energy contravariant simultaneously. The utility model discloses be convenient for operate, and the structure is small and exquisite light, makes things convenient for outdoor environment's use. For the multiple output device of electric energy on the existing market, the utility model discloses the cost is lower, convenient to popularize and use more.

Drawings

FIG. 1 is a schematic diagram of the hardware circuit connection of the present invention;

fig. 2 is a software flow chart of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides the following technical solutions:

an alternating current and direct current power supply switching device comprises a storage battery, a conversion box and an electric energy output terminal wire, wherein the electric energy output terminal wire is used for outputting alternating current or direct current and is connected with a load. The conversion box comprises a main control chip module, a relay group, a key, an inverter module, a 2P wiring terminal, an indicator light and a DC-DC conversion module group, a storage battery is electrically connected with the conversion box, the conversion box is connected with an electric energy output terminal, the relay group comprises a relay I and a relay II, the DC-DC conversion module group comprises a DC-DC conversion module I and a DC-DC conversion module II, and the DC-DC conversion module I is specially used for supplying power for the main control chip module. The storage battery which is widely used at present is a 12V rechargeable storage battery which is used as a storage and supply device of direct current in the device.

The positive pole end and the negative pole end of battery and the 2P binding post electric connection in the conversion box, DC-DC conversion module I's power supply terminal and the 2P binding post electric connection in the conversion box, and I output voltage of DC-DC conversion module is invariably 5V for supply power for main control chip module, relay group, button and pilot lamp in the conversion box.

The power input end of the main control chip module is electrically connected with the output end of the DC-DC conversion module I, VCC of the main control chip module is connected with V + of the DC-DC conversion module I, GND of the main control chip module is connected with V-of the DC-DC conversion module I, the main control chip module is a STC89C52 minimum system board and is used for controlling the relay I and the relay II according to the change of keys, when an AC key is clicked, the relay I is changed from normally open to closed, the inverter module is communicated with the electric energy output terminal line, alternating current is output at the moment, the AC indicator lamp is lightened, and a user can rotate a knob on the inverter module to select the output alternating current voltage; when a DC key is clicked, the relay II is changed from being normally open to being closed, the DC-DC conversion module II is conducted with the electric energy output terminal line, the device outputs alternating current at the moment, the AC indicating lamp is lightened, and a user can rotate a knob on the DC-DC conversion module II to select output direct current voltage.

In order to facilitate the selection of the output of the electric energy type by a user, the device is provided with keys which are electrically connected with the main control chip module and comprise an AC key and a DC key. The electric energy input end of the inverter module is electrically connected with the 2P wiring terminal in the conversion box, the output end of the inverter module is electrically connected with the electric energy output end sub-line after passing through the relay I, and the control end of the relay I is connected with the I \ O pin of the main control chip module. The DC-DC conversion module II is electrically connected with the electric energy output terminal line through the relay II, and the control end of the relay II is connected with the I \ O pin of the main control chip module.

The device is also provided with indicator lights, including an AC indicator light and a DC indicator light, for indicating whether the device is currently operating in a DC output state or an AC output state.

In order to prevent the inverter module and the DC-DC conversion module II from being conducted with the electric energy output terminal line at the same time when the AC key and the DC key are switched, when the AC output is changed into the DC output, the I/O pin of the main control chip module firstly controls the relay I to be disconnected, namely the inverter module and the electric energy output terminal line are disconnected, after 5us of delay, the I/O pin of the main control chip module controls the relay II to be closed, and the DC-DC conversion module II is conducted with the electric energy output terminal line. And in the same reason, when the DC output is changed into the AC output, the I/O pin of the main control chip module firstly controls the relay II to be disconnected, namely the DC-DC conversion module II is disconnected with the electric energy output terminal line, the I/O pin of the main control chip module controls the relay I to be closed after the time delay of 5us, and the inverter module is connected with the electric energy output terminal line.

The utility model discloses a theory of operation and use flow: after a conversion box of the device is connected with the storage battery, the whole device starts to work, at the moment, the inverter module and the DC-DC conversion module II are both in an electric energy conversion state, and the DC-DC conversion module I provides working voltage for the main control chip module. A user clicks a key according to actual conditions, if the relay I is switched from closed to conductive when the AC key is clicked, the inverter module starts to output electric energy; and if the relay II is switched from closed to conducted when the DC key is clicked, the DC-DC conversion module II starts to output the electric energy.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The alternating current and direct current power supply switching device is characterized by comprising a storage battery, a conversion box and an electric energy output terminal line, wherein the conversion box comprises a main control chip module, a relay group, a key, an inverter module, a 2P wiring terminal, an indicator light and a DC-DC conversion module group, the storage battery is electrically connected with the conversion box, the conversion box is connected with the electric energy output terminal line, the relay group comprises a relay I and a relay II, and the DC-DC conversion module group comprises a DC-DC conversion module I and a DC-DC conversion module II.

2. An AC/DC power switching device according to claim 1, wherein the positive and negative terminals of the secondary battery are electrically connected to the 2P terminals in the switching box, the power terminal of the DC-DC conversion module I is electrically connected to the 2P terminals in the switching box, and the output voltage of the DC-DC conversion module I is constantly 5V.

3. The ac/DC power switching apparatus according to claim 1, wherein the power input terminal of the main control chip module is electrically connected to the output terminal of the DC-DC conversion module i, VCC of the main control chip module is connected to V + of the DC-DC conversion module i, GND of the main control chip module is connected to V-of the DC-DC conversion module i, and the main control chip module is a minimum system board STC89C 52.

4. The AC/DC power switching apparatus according to claim 1, wherein the key is electrically connected to the main control chip module, and the key includes an AC key and a DC key.

5. An AC/DC power switching device as claimed in claim 1, wherein the power input terminal of the inverter module is electrically connected to the 2P terminal in the switching box, the output terminal of the inverter module is electrically connected to the power output terminal through a relay I, and the control terminal of the relay I is connected to the I \ O pin of the main control chip module.

6. The AC/DC power switching device according to claim 1, wherein the DC-DC conversion module II is electrically connected with the power output terminal through a relay II, and the control terminal of the relay II is connected with the I \ O pin of the main control chip module.

7. An AC/DC power switching apparatus according to claim 6, wherein said indicator lamps include an AC indicator lamp and a DC indicator lamp.

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