CN115864801A - Inverter without separate positive and negative pole input - Google Patents
Inverter without separate positive and negative pole input Download PDFInfo
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- CN115864801A CN115864801A CN202211197740.XA CN202211197740A CN115864801A CN 115864801 A CN115864801 A CN 115864801A CN 202211197740 A CN202211197740 A CN 202211197740A CN 115864801 A CN115864801 A CN 115864801A
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Abstract
The invention relates to the technical field of inverters, and discloses an inverter with input of a positive electrode and a negative electrode, which comprises a single chip microcomputer MCU1, a diode D2, a diode D3, a full-bridge rectifier D1, a relay G1 and a relay G2, wherein the single chip microcomputer MCU1 comprises a power supply identification port 1, a power supply identification port 2, VCC and GND which are respectively connected with the diode D2, the diode D3 and the full-bridge rectifier D1; the single-chip microcomputer MCU2 further comprises a control port 1 and a control port 2 which are respectively connected with a relay G1 and a relay G2, the relay G1 is connected with the anode of the main loop of the inverter, and the relay G2 is connected with the cathode of the main loop of the inverter. The inverter with the input of the positive electrode and the negative electrode is not distinguished, a user can randomly connect the positive electrode and the negative electrode, the circuit automatically switches the positive electrode and the negative electrode in the inverter, time and labor are saved, and the condition that the inverter is burnt due to wrong connection is avoided.
Description
Technical Field
The invention relates to the technical field of inverters, in particular to an inverter with input of a positive electrode and a negative electrode not distinguished.
Background
The inverter is used for many years, the conventional use scenes are the scenes such as inside, outside and outside the vehicle, and no matter any scene is used, a direct current source such as a battery and a power supply is needed, however, direct current always has a positive electrode and a negative electrode, when a user uses the inverter, the machine is often damaged due to the wrong connection of the positive electrode and the negative electrode, and some machines have reverse connection prevention but only can be prevented from being burnt, and the operation of the user can still be ensured under the condition that the user connects the positive electrode and the negative electrode at will.
Disclosure of Invention
The invention provides an inverter without input of a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are not distinguished, a user can randomly connect the positive electrode and the negative electrode, a circuit automatically switches the positive electrode and the negative electrode in the inverter, time and labor are saved, and the condition of machine burning caused by wrong connection is avoided.
The invention provides an inverter without input of a positive electrode and a negative electrode, which comprises a singlechip MCU1, a diode D2, a diode D3, a full-bridge rectifier D1, a relay G1 and a relay G2;
the power supply identification port 1 of the singlechip MCU1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with 12V +, the power supply identification port 2 of the singlechip MCU1 is connected with the cathode of the diode D3, the anode of the diode D3 is connected with 12-, the VCC of the singlechip MCU1 is connected with the anode output end of the full-bridge rectification D1, the GND of the singlechip MCU1 is connected with the cathode output end of the full-bridge rectification D1 and is grounded, one end of the input end of the full-bridge rectification D1 is connected with 12V +, the other end of the input end of the full-bridge rectification D1 is connected with 12V-, the control port 1 of the singlechip MCU1 is connected with a point A, and the control port 2 of the singlechip MCU1 is connected with a point B;
the point A is connected with one end of a coil in the relay G1, the other end of the coil in the relay G1 is grounded, a first pin of a contact part in the relay G1 is connected with a second pin and 12V + of the contact part in the relay G2, the second pin of the contact part in the relay G1 is connected with the first pin and 12V-of the contact part in the relay G2, a third pin of the contact part in the relay G1 is connected with the positive pole of the main loop of the inverter, the point B is connected with one end of the coil in the relay G2, the other end of the coil in the relay G2 is grounded, and the third pin of the contact part in the relay G2 is connected with the negative pole of the main loop of the inverter.
Further, the diode D2 and the diode D3 are each IN4148.
Further, the positive output end of the full-bridge rectifier D1 is the positive electrode of the power supply of the inverter control circuit, and the negative output end of the full-bridge rectifier D2 is the negative electrode of the power supply of the inverter control circuit.
Further, the relay G1 and the relay G2 are both single-pole double-throw relays.
Further, the upper arm of the relay G1 is a first normally closed end, the first normally closed end is a first pin of the relay G1, the lower arm of the relay G1 is a first normally open end, and the first normally open end is a second pin of the relay G1;
the upper arm of the relay G2 is a second normally closed end, the second normally closed end is a first pin of the relay G2, the lower arm of the relay G2 is a second normally open end, and the second normally open end is a second pin of the relay G2.
Further, when the power supply is positive and negative, the full-bridge rectification D1 always ensures that the positive electrode and the negative electrode of the power supply of the control circuit are consistent, the diode D2 is conducted, and the power supply identification port 1 of the singlechip MCU1 identifies the voltage;
the point A and the point B output low levels, the relay G1 is connected with a first normally closed end, the relay G2 is connected with a second normally closed end, the relay G1 is connected with 12V + and the anode of the main inverter circuit, and the relay G2 is connected with 12V-and the cathode of the main inverter circuit.
Further, when the power supply is positive and negative, the full-bridge rectification D1 always ensures that the positive electrode and the negative electrode of the power supply of the control circuit are consistent, the diode D3 is conducted, and the power supply identification port 2 of the singlechip MCU1 identifies the voltage;
the high-level power supply comprises a point A and a point B, wherein the point A and the point B output high levels, the relay G1 is connected with a first normally-open end, the relay G2 is connected with a second normally-open end, the relay G1 is connected with 12V-and the negative pole of the main circuit of the inverter, and the relay G2 is connected with 12V + and the positive pole of the main circuit of the inverter.
The beneficial effects of the invention are as follows:
the invention adds the positive and negative switching circuit, so that the inverter does not have the positive and negative electrodes, and the circuit automatically switches the internal positive and negative levels as long as a user is connected; when the user used the dc-to-ac converter, the input line can be worked a telephone switchboard at will, does not have positive negative pole to consider to be taboo, and labour saving and time saving solves the user and distinguishes unclear positive negative pole or the ageing unclear positive negative pole of seeing of storage battery, and then leads to connecing the problem of wrong machine that burns.
Drawings
FIG. 1 is a schematic diagram of the operation state of the power supply of the present invention when the power supply is turned on or off.
Fig. 2 is a schematic diagram of the power supply of the invention in the working state of up, down, and positive timing.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1, the invention provides an inverter with no separate input of positive and negative poles, which comprises a single chip microcomputer MCU1, a diode D2, a diode D3, a full-bridge rectifier D1, a relay G1 and a relay G2;
the power supply identification port 1 of the single chip microcomputer MCU1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with 12V +, the power supply identification port 2 of the single chip microcomputer MCU1 is connected with the cathode of the diode D3, the anode of the diode D3 is connected with 12-, the VCC of the single chip microcomputer MCU1 is connected with the anode output end of the full-bridge rectification D1, the GND of the single chip microcomputer MCU1 is connected with the cathode output end of the full-bridge rectification D1 and is grounded, one end of the input end of the full-bridge rectification D1 is connected with 12V +, the other end of the input end of the full-bridge rectification D1 is connected with 12V-, the control port 1 of the single chip microcomputer MCU1 is connected with a point A, and the control port 2 of the single chip microcomputer MCU1 is connected with a point B;
the point A is connected with one end of a coil in the relay G1, the other end of the coil in the relay G1 is grounded, a first pin of a contact part in the relay G1 is connected with a second pin and 12V + of the contact part in the relay G2, the second pin of the contact part in the relay G1 is connected with the first pin and 12V-of the contact part in the relay G2, a third pin of the contact part in the relay G1 is connected with the positive pole of the main loop of the inverter, the point B is connected with one end of the coil in the relay G2, the other end of the coil in the relay G2 is grounded, and the third pin of the contact part in the relay G2 is connected with the negative pole of the main loop of the inverter.
The type of the diode D2 and the type of the diode D3 are both IN4148. The positive output end of the full-bridge rectification D1 is the positive electrode of the power supply of the inverter control circuit, and the negative output end of the full-bridge rectification D2 is the negative electrode of the power supply of the inverter control circuit. The relay G1 and the relay G2 are both single-pole double-throw relays.
The upper arm of the relay G1 is a first normally closed end, the first normally closed end is a first pin of the relay G1, the lower arm of the relay G1 is a first normally open end, and the first normally open end is a second pin of the relay G1;
the upper arm of the relay G2 is a second normally closed end, the second normally closed end is a first pin of the relay G2, the lower arm of the relay G2 is a second normally open end, and the second normally open end is a second pin of the relay G2.
As shown in fig. 1, when the power supply is positive and negative, the full-bridge rectification D1 always ensures that the positive and negative poles of the power supply of the control circuit are consistent, the diode D2 is conducted, and the power supply identification port 1 of the single chip microcomputer MCU1 identifies the voltage;
the point A and the point B output low levels, the relay G1 is connected with a first normally closed end, the relay G2 is connected with a second normally closed end, the relay G1 is connected with 12V + and the anode of the main inverter circuit, and the relay G2 is connected with 12V-and the cathode of the main inverter circuit.
1. When the power supply is positive and negative, the full-bridge rectification D1 always ensures the consistency of the positive and negative poles of the power supply of the control circuit.
2. When the power supply is positive and negative, the diode D2 is conducted (D3 is not conducted because the negative electrode enters), and the MCU1 singlechip (the power supply identification port 1) identifies the voltage (the default A point and the default B point both output low levels at the moment).
3. When both points a and B output low levels, the relays G1 and G2 turn on only the normally closed terminals (the upper arms of the relays are normally closed terminals as shown in fig. 1).
4. When the relays G1 and G2 are only switched on the normally closed end, the relay G1 switches on the 12V + and the positive pole of the inversion input main loop, and the relay G2 switches on the 12V-and the negative pole of the inversion input main loop.
As shown in fig. 2, when the power supply is positive and negative, the full-bridge rectification D1 always ensures that the positive and negative poles of the power supply of the control circuit are consistent, the diode D3 is turned on, and the power supply identification port 2 of the single chip microcomputer MCU1 identifies the voltage;
the point A and the point B output high levels, the relay G1 is connected with a first normally open end, the relay G2 is connected with a second normally open end, the relay G1 is connected with 12V-and the negative pole of the main loop of the inverter, and the relay G2 is connected with 12V + and the positive pole of the main loop of the inverter.
1. When the power supply is in positive and negative and positive timing, the full-bridge rectification D1 always ensures the consistency of the positive and negative poles of the power supply of the control circuit.
2. When the power supply is negative and positive, the diode D3 is conducted (the diode D2 is not conducted because the negative electrode enters), and the MCU1 single chip microcomputer (the power supply identification port 2) identifies the voltage (the default A point and the default B point both output high level at the moment).
3. When both the points a and B output the high level, the relays G1 and G2 are turned on only at the normally-open end (as shown in fig. 2, the relay lower arm is the normally-open end).
4. Relays G1 and G2 are only switched on a normally open end, relay G2 is switched on 12V + and the positive pole of the inversion input main loop, and relay G1 is switched on 12V-and the negative pole of the inversion input main loop.
The invention adds the positive and negative switching circuit, so that the inverter does not have the positive and negative electrodes, and the circuit automatically switches the internal positive and negative levels as long as a user is connected; when the user used the dc-to-ac converter, the input line can be worked a telephone switchboard at will, does not have positive negative pole to consider taboo, and labour saving and time saving solves the user and divides unclear positive negative pole or the ageing unclear positive negative pole of seeing of storage battery, and then leads to connecing the problem of wrong machine of burning.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, apparatus, article, or method that comprises the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. An inverter with input of a positive electrode and a negative electrode which are not distinguished is characterized by comprising a singlechip MCU1, a diode D2, a diode D3, a full-bridge rectifier D1, a relay G1 and a relay G2;
the power supply identification port 1 of the singlechip MCU1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with 12V +, the power supply identification port 2 of the singlechip MCU1 is connected with the cathode of the diode D3, the anode of the diode D3 is connected with 12-, the VCC of the singlechip MCU1 is connected with the anode output end of the full-bridge rectification D1, the GND of the singlechip MCU1 is connected with the cathode output end of the full-bridge rectification D1 and is grounded, one end of the input end of the full-bridge rectification D1 is connected with 12V +, the other end of the input end of the full-bridge rectification D1 is connected with 12V-, the control port 1 of the singlechip MCU1 is connected with a point A, and the control port 2 of the singlechip MCU1 is connected with a point B;
the point A is connected with one end of a coil in the relay G1, the other end of the coil in the relay G1 is grounded, a first pin of a contact part in the relay G1 is connected with a second pin and 12V + of the contact part in the relay G2, the second pin of the contact part in the relay G1 is connected with the first pin and 12V-of the contact part in the relay G2, a third pin of the contact part in the relay G1 is connected with the positive pole of the main loop of the inverter, the point B is connected with one end of the coil in the relay G2, the other end of the coil in the relay G2 is grounded, and the third pin of the contact part in the relay G2 is connected with the negative pole of the main loop of the inverter.
2. The inverter according to claim 1, wherein the diode D2 and the diode D3 are each IN4148.
3. The inverter of claim 1, wherein the positive output terminal of the full-bridge rectifier D1 is the positive terminal of the inverter control circuit power supply, and the negative output terminal of the full-bridge rectifier D2 is the negative terminal of the inverter control circuit power supply.
4. The inverter according to claim 3, wherein the relay G1 and the relay G2 are single-pole double-throw relays.
5. The inverter according to claim 4, wherein the upper arm of the relay G1 is a first normally closed end, the first normally closed end is a first pin of the relay G1, the lower arm of the relay G1 is a first normally open end, and the first normally open end is a second pin of the relay G1;
the upper arm of the relay G2 is a second normally closed end, the second normally closed end is a first pin of the relay G2, the lower arm of the relay G2 is a second normally open end, and the second normally open end is a second pin of the relay G2.
6. The inverter with the input of the non-separated positive electrode and the non-separated negative electrode of claim 5 is characterized in that when a power supply is positive and negative, the full-bridge rectification D1 always ensures that the positive electrode and the negative electrode of the power supply of the control circuit are consistent, the diode D2 is conducted, and the power supply identification port 1 of the singlechip MCU1 identifies voltage;
the point A and the point B output low levels, the relay G1 is connected with a first normally closed end, the relay G2 is connected with a second normally closed end, the relay G1 is connected with 12V + and the anode of the main inverter circuit, and the relay G2 is connected with 12V-and the cathode of the main inverter circuit.
7. The inverter according to claim 5, wherein when the power supply is positive and negative, the full-bridge rectifier D1 always ensures that the positive and negative poles of the power supply of the control circuit are consistent, the diode D3 is turned on, and the power supply identification port 2 of the MCU1 recognizes the voltage;
the high-level power supply comprises a point A and a point B, wherein the point A and the point B output high levels, the relay G1 is connected with a first normally-open end, the relay G2 is connected with a second normally-open end, the relay G1 is connected with 12V-and the negative pole of the main circuit of the inverter, and the relay G2 is connected with 12V + and the positive pole of the main circuit of the inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197740.XA CN115864801A (en) | 2022-09-29 | 2022-09-29 | Inverter without separate positive and negative pole input |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197740.XA CN115864801A (en) | 2022-09-29 | 2022-09-29 | Inverter without separate positive and negative pole input |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115864801A true CN115864801A (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211197740.XA Pending CN115864801A (en) | 2022-09-29 | 2022-09-29 | Inverter without separate positive and negative pole input |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115864801A (en) |
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2022
- 2022-09-29 CN CN202211197740.XA patent/CN115864801A/en active Pending
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