Intelligent control energy-saving portable inverter

Abstract

The invention discloses an intelligent-control energy-saving portable inverter, and the inverter comprises an inverter main housing; the socket main body structure is arranged above the inverter main shell; the socket main body structure comprises a socket shell structure which is arranged above the inverter main shell and is fixedly connected with the inverter main shell; the shading assembly is nested in the socket shell structure; the output panel structure is arranged above the socket main body structure; the input control circuit, the push-pull control circuit and the inverter circuit are arranged in the inverter main shell and are sequentially connected to form a linkage system; the input control circuit comprises an LED state indicating lamp, a photoresistor which realizes signal transmission with the LED state indicating lamp through optical coupling, and a comparator connected with the photoresistor. Compared with the prior art, the problems of overheating caused by no-load operation, damage to electronic components in the inverter and the like can be effectively solved, energy consumption and potential safety hazards caused by no-load operation are avoided, and the response speed and stability of the whole system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of inverters, and more specifically, to an intelligently controlled energy-saving portable inverter. Background Art

[0002] The main function of the inverter is to convert direct current into alternating current. It is widely used in solar power generation, emergency power supply, vehicle inverter and other fields.

[0003] At present, the intelligent energy-saving portable inverters in the prior art mainly have the following problems: manual switch control is adopted, and if it is not manually turned off, the power consumption of the equipment will increase, causing the inverter to overheat, shortening its service life, and even causing safety hazards; the micro switch used will experience performance degradation and shortened life due to mechanical wear and environmental factors, and there is a delay in response, and fast and accurate state switching cannot be achieved. That is, the portable inverter in the prior art relies on the user to manually operate the switch, which often leads to no-load operation due to negligence, causing overheating, damage to the electronic components inside the inverter and other problems.

[0004] Therefore, how to provide an intelligent energy-saving portable inverter that can overcome the above-mentioned technical problems, reduce the no-load energy consumption of the portable inverter, and improve the reliability and stability of the inverter has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an intelligent energy-saving portable inverter, which realizes real-time monitoring of the plug status by adopting non-contact detection technology of photoelectric sensors, and automatically controls the inverter to output PWM waves, thereby reducing the no-load energy consumption of the portable inverter and greatly improving the reliability and stability of the inverter.

[0006] The technical solution provided by the present invention is as follows:

[0007] The present invention provides an intelligent control energy-saving portable inverter, which, compared with the prior art, comprises: an inverter main shell; a socket main body structure arranged above the inverter main shell, wherein the socket main body structure comprises: a socket shell structure arranged above the inverter main shell and fixedly connected thereto, and a shading component nested inside the socket shell structure; an output panel structure arranged above the socket main body structure; an input control circuit, a push-pull control circuit and an inverter circuit arranged in the inverter main shell and connected in sequence to form a linkage system, wherein the input control circuit is used to control the working state of the push-pull control circuit; the input control circuit comprises an LED status indicator, a photoresistor that realizes signal transmission with the LED status indicator through optical coupling, and a comparator connected to the photoresistor; the LED status indicator serves as an optical signal source and constitutes a non-contact detection module with the photoresistor, which is used to judge the plug insertion state in real time, and the shading component is used to change the optical coupling relationship between the LED status indicator and the photoresistor when the plug insertion state changes.

[0008] Among them, the socket main body structure is specifically a five-hole socket main body structure, the socket shell structure is a five-hole socket shell, and the output panel structure is specifically a five-hole output panel structure.

[0009] Furthermore, the input control circuit also includes: an LED current limiting resistor connected in series with the LED status indicator light; a photosensitive signal adjusting resistor connected in parallel with the photoresistor, used to adjust the amplitude of the photoresistor output signal; and a fixed reference voltage circuit connected to the comparator.

[0010] Furthermore, the push-pull control circuit is connected to the input control circuit and is used to convert direct current into a high-frequency pulse signal, including: a push-pull controller, the input end of the push-pull controller is connected to the output end of the comparator; at least one pair of complementary MOSFETs, the gates of the MOSFETs are respectively connected to the PWM signal output ends of the push-pull controller.

[0011] Furthermore, the inverter circuit is connected to the push-pull control circuit and is used to convert the high-frequency pulse signal obtained from the push-pull control circuit into an AC power supply, including: an SPWM controller, the input end of the SPWM controller is connected to the feedback signal output end of the push-pull controller; four MOSFETs, and the four MOSFETs constitute a full-bridge inverter structure.

[0012] Furthermore, the shading assembly includes: a first safety door structure nested inside the socket shell structure and slidably connected to the socket shell structure; a second safety door structure nested inside the socket shell structure and slidably connected to the socket shell structure; a return spring arranged between the first safety door structure and the second safety door structure, and the return spring is used to restore the positions of the first safety door structure and the second safety door structure when the plug is pulled out.

[0013] Furthermore, in a preferred embodiment of the present invention, the first safety door structure includes: a first safety door body nested inside the socket shell structure and slidably connected to the socket shell structure; a limiting groove arranged inside the first safety door body, and the limiting groove is used to achieve stable movement of the first safety door structure when the plug insertion state changes; and a first light shielding plate arranged at the front end of the first safety door body and integrally formed with the first safety door body.

[0014] Furthermore, in a preferred embodiment of the present invention, the second safety door structure includes: a second safety door body nested inside the socket shell structure and slidably connected to the socket shell structure; a limiting column arranged at the rear end of the second safety door body, the limiting column matching the limiting groove, for realizing stable movement of the second safety door structure when the plug insertion state changes; and a second light shielding plate arranged at the front end of the second safety door body and integrally formed with the second safety door body.

[0015] Furthermore, the socket shell structure includes: a shell body, whose cross-section is rectangular, including a first long side structure and a second long side structure parallel to the first long side structure, and a first short side structure and a second short side structure connecting the two; positioning holes arranged at the four corners of the shell body; an LED status indication pin hole and a photoresistor pin hole arranged at the center position of the first short side structure and the center position of the second short side structure of the shell body; a bayonet arranged at the center position of the first long side structure and the center position of the second long side structure of the shell body; and a guide groove arranged at the bottom of the shell body, parallel to the first long side structure.

[0016] Furthermore, the output panel structure includes: an output panel structure body; an LED status indicator hole arranged on the output panel structure body; a positioning column structure arranged inside the output panel structure body; and a buckle structure arranged inside the output panel structure body.

[0017] Furthermore, in a preferred embodiment of the present invention, the output panel structure is connected to the socket shell structure in the following manner: the positioning column in the output panel structure is connected to the positioning hole on the socket shell structure; and the buckle structure is cooperatively connected to the bayonet structure.

[0018] Compared with the prior art, the present invention provides a smart control energy-saving portable inverter, which includes the following: an inverter main housing; a socket main body structure arranged above the inverter main housing, the socket main body structure including: a socket shell structure arranged above the inverter main housing and fixedly connected thereto, and a light shielding component nested inside the socket shell structure; an output panel structure arranged above the socket main body structure; an input control circuit, a push-pull control circuit and an inverter circuit arranged in the inverter main housing and sequentially connected to form a linkage system, the input control circuit is used to control the working state of the push-pull control circuit; the input control circuit includes an LED status indicator, a photoresistor that realizes signal transmission through optical coupling with the LED status indicator, and a comparator connected to the photoresistor; the LED status indicator acts as an optical signal source, and constitutes a non-contact detection module with the photoresistor, which is used to judge the plug insertion state in real time, and the light shielding component is used to change the optical coupling relationship between the LED status indicator and the photoresistor when the plug insertion state changes. Among them, the LED status indicator is not only used to display the working state of the device, but also can be used as an optical signal source. When the inverter is in the standby state, the shading component located inside the socket main body structure is in a shielding state, blocking the light signal emitted by the LED, so that the photoresistor cannot receive enough light energy; therefore, the comparator outputs a low-level signal, the push-pull control circuit and the inverter circuit are both in a closed state, and the inverter does not output AC power, thereby preventing no-load operation. When the electrical appliance plug is fully inserted into the socket main body structure located above the inverter main housing, the mechanical action of the plug prompts the shading component in the shading component to move accordingly, thereby removing the shielding of the LED light signal, and the inverter starts to work. In the above manner, the present invention realizes intelligent control and energy-saving functions, effectively avoids unnecessary energy consumption and potential safety hazards caused by no-load operation, and improves the response speed and stability of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1A schematic diagram of the appearance of an intelligent energy-saving portable inverter provided in an embodiment of the present invention;

[0021] Figure 2 A front view of the socket main structure provided by an embodiment of the present invention;

[0022] Figure 3 An oblique view of the socket main body structure provided by an embodiment of the present invention;

[0023] Figure 4 A front view of the socket main body structure provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of a first safety door provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the structure of a second safety door provided in an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of a five-hole socket provided in an embodiment of the present invention having an LED status indicator light and a photoresistor installed therein;

[0027] Figure 8 A schematic diagram of a two-core plug provided in an embodiment of the present invention after being fully inserted into a socket body;

[0028] Fig. 9 A schematic diagram of a three-core plug provided in an embodiment of the present invention after being fully inserted into a socket body;

[0029] Fig.10 A schematic diagram of the internal structure of an output panel structure provided by an embodiment of the present invention;

[0030] Fig.11 A schematic diagram of a circuit of an intelligent energy-saving portable inverter provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, product or equipment that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, product or equipment.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0034] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0035] Please Figures 1 to 11 As shown, the intelligent control energy-saving portable inverter provided by the embodiment of the present invention includes: an inverter main shell 1; a socket main body structure 2 arranged above the inverter main shell 1, the socket main body structure 2 includes: a socket shell structure 3 arranged above the inverter main shell 1 and fixedly connected thereto, and a shading component 4 nested inside the socket shell structure 3; an output panel structure 5 arranged above the socket main body structure 2; an input control circuit, a push-pull control circuit and an inverter circuit arranged in the inverter main shell 1 and connected in sequence to form a linkage system, the input control circuit is used to control the working state of the push-pull control circuit; the input control circuit includes an LED status indicator 6, a photoresistor 7 that realizes signal transmission through optical coupling with the LED status indicator 6, and a comparator connected to the photoresistor 7; the LED status indicator 6 is used as an optical signal source, and constitutes a non-contact detection module with the photoresistor 7 for real-time judgment of the plug insertion state, and the shading component 4 is used to change the optical coupling relationship between the LED status indicator 6 and the photoresistor 7 when the plug insertion state changes.

[0036] Among them, the socket main body structure is specifically a five-hole socket main body structure, the socket shell structure is a five-hole socket shell, and the output panel structure is specifically a five-hole output panel structure.

[0037] Among them, the LED status indicator 6 is not only used to display the working status of the device, but also can be used as a light signal source. When the inverter is in the ready state, the shading component 4 located inside the socket main body structure 2 is in a shielding state, blocking the light signal emitted by the LED status indicator 6, so that the photoresistor 7 cannot receive enough light energy; therefore, the comparator outputs a low-level signal, the push-pull control circuit and the inverter circuit are both in a closed state, and the inverter does not output AC power, thereby preventing no-load operation. When the electrical plug is fully inserted, the mechanical action of the plug prompts the shading component in the shading component 4 to move accordingly, removing the shielding of the light signal emitted by the LED status indicator 6, and the inverter starts working. In the above manner, the present invention realizes intelligent control and energy-saving functions, effectively avoids unnecessary energy consumption and potential safety hazards caused by no-load operation, and improves the response speed and stability of the overall system.

[0038] Therefore, the embodiment of the present invention provides an intelligent energy-saving portable inverter with simple structure, rapid response, strong environmental adaptability, high reliability, intelligent control and energy-saving functions, which can improve the safety and practicality of the equipment and enhance the user experience. The input control circuit also includes: an LED current limiting resistor connected in series with the LED status indicator light 6; a photosensitive signal adjustment resistor connected in parallel with the photoresistor 7, which is used to adjust the amplitude of the photoresistor output signal; and a fixed reference voltage circuit connected to the comparator.

[0039] It should be noted that the LED current limiting resistor is set in series with the LED status indicator 6, and its function is to adjust and limit the current flowing through the LED status indicator 6 to prevent the brightness of the LED status indicator 6 from fluctuating or being damaged due to excessive current. The photosensitive signal adjustment resistor set in parallel with the photoresistor 7 is used to fine-tune the output signal of the photoresistor 7, reduce the influence of external interference on the detection result, and ensure that the signal received by the comparator is more stable and accurate. In addition, the fixed reference voltage circuit is connected to the comparator to provide a constant and accurate reference voltage for the comparator. In the embodiment of the present invention, by introducing additional components in the input control circuit, the light output of the LED status indicator 6 and the signal of the photoresistor 7 are accurately adjusted and stably controlled, thereby ensuring the high reliability and accuracy of the entire detection system.

[0040] Specifically, the push-pull control circuit is connected to the input control circuit and is used to convert direct current into a high-frequency pulse signal, including: a push-pull controller, the input end of the push-pull controller is connected to the output end of the comparator; at least one pair of complementary MOSFETs, the gates of the MOSFETs are respectively connected to the PWM signal output ends of the push-pull controller.

[0041] Among them, the circuit diagram of the embodiment of the present invention is as follows Fig.11As shown in Figure 1, when the inverter is working, the input control circuit outputs a high-level control signal through the comparator, and the push-pull controller starts to work and generates a PWM signal with an appropriate duty cycle. The PWM signal is sent to two complementary MOSFETs, namely Fig.11 Q1 and Q2 shown in the figure are turned on and off alternately, thereby converting DC power into a high-frequency pulse signal. This high-frequency pulse signal is then transmitted to the inverter circuit through a transformer or related conversion circuit, and is further converted into a 220V pure sine wave AC output through a full-bridge structure and an SPWM controller in the inverter circuit. Through the complementary characteristics of the two MOSFETs, high-frequency and efficient DC-AC conversion is achieved, reducing switching losses and heat accumulation. As a result, the push-pull control circuit improves the conversion efficiency, improves the stability and safety of the inverter, and avoids no-load operation and the risk of overheating caused by unstable current.

[0042] Specifically, the inverter circuit is connected to the push-pull control circuit and is used to convert the high-frequency pulse signal obtained from the push-pull control circuit into an AC power supply, including: an SPWM controller, the input end of the SPWM controller is connected to the feedback signal output end of the push-pull controller; four MOSFETs, and the four MOSFETs constitute a full-bridge inverter structure.

[0043] It should be noted that after the push-pull control circuit converts DC power into a high-frequency pulse signal, the signal enters the inverter circuit, and the SPWM controller generates a corresponding PWM control signal based on the preset sinusoidal reference wave and the high-frequency carrier, thereby accurately controlling the on and off of each MOSFET in the full bridge. After filtering, the output waveform is similar to a 220V pure sine wave, which meets the needs of electrical appliances for AC power. It achieves efficient DC to AC conversion, reduces switching losses and heat accumulation, ensures stable operation of the equipment under load conditions, and improves the energy efficiency and reliability of the system.

[0044] Specifically, in an embodiment of the present invention, the shading assembly 4 includes: a first safety door structure 401 nested inside the socket shell structure 3 and slidably connected to the socket shell structure 3; a second safety door structure 402 nested inside the socket shell structure 3 and slidably connected to the socket shell structure 3; a reset spring 403 arranged between the first safety door structure 401 and the second safety door structure 402, and the reset spring 403 is used to restore the positions of the first safety door structure 401 and the second safety door structure 402 when the plug is pulled out.

[0045] In the embodiment of the present invention, when a two-core plug is inserted, the two-core plug applies a mechanical action to the first safety door structure, the first safety door structure approaches the second safety door under the guidance of the limit column and the limit groove, the first shielding plate leaves the shielding position, the photoresistor receives the LED indicator signal, and the inverter starts to work; when a three-core plug is inserted, the three-core plug applies a mechanical action to the second safety door structure, the second safety door structure approaches the first safety door under the guidance of the limit column and the limit groove, the second shielding plate leaves the shielding position, the photoresistor receives the LED indicator signal, and the inverter starts to work. When the electrical plug is unplugged, the reset spring applies a mechanical action to the safety door structure, and the safety door returns to the shielding position under the action of the limit column and the limit groove.

[0046] It should be noted that in the embodiment of the present invention, when the electrical appliance plug is not inserted, the first safety door structure 401 and the second safety door structure 402 are kept in the initial position by the continuous action of the reset spring 403, so that the light shielding component 4 is in a shielding state, effectively blocking the light signal emitted by the LED status indicator, so that the photoresistor cannot detect sufficient light. Figure 8 and Fig. 9 As shown, the safety door structure moves due to mechanical action, removing the shielding of the LED light signal, so that the photoresistor receives sufficient light signals, and outputs a control signal after comparison with the fixed reference voltage circuit by the comparator, driving the subsequent push-pull control circuit and the inverter circuit to start, thereby realizing the normal operation of the inverter.

[0047] Specifically, in an embodiment of the present invention, the first safety door structure 401 includes: a first safety door body 405 nested inside the socket shell structure 3 and slidably connected to the socket shell structure 3; a limiting groove 406 arranged inside the first safety door body 405, and the limiting groove 406 is used to achieve stable movement of the first safety door structure 401 when the plug insertion state changes; and a first light shielding plate 407 arranged at the front end of the first safety door body 405 and integrally formed with the first safety door body 405.

[0048] Specifically, the second safety door structure 402 includes: a second safety door body 408 nested inside the socket shell structure 3 and slidably connected to the socket shell structure 3; a limiting column 409 arranged at the rear end of the second safety door body 408, the limiting column 409 matches the limiting groove 406, and is used to achieve stable movement of the second safety door structure 402 when the plug insertion state changes; and a second light shielding plate 410 arranged at the front end of the second safety door body 408 and integrally formed with the second safety door body 408.

[0049] It should be noted that in the embodiment of the present invention, when the electrical plug is not inserted, the two safety door structures remain in the initial shielding position under the continuous action of the reset spring, and the first light shielding plate 407 and the second light shielding plate 410 work together to effectively block the light emitted by the LED status indicator, so that the photoresistor cannot receive enough light signals, thereby avoiding false start. When the electrical plug is inserted, the plug exerts a mechanical action on the safety door structure, and the limit groove 406 and the limit column 409 cooperate with each other to ensure that the two safety door structures move smoothly and accurately, quickly remove the shielding of the LED light, and enable the photoresistor to receive enough light signals. At this time, the comparator and the fixed reference voltage circuit are judged, and the output control signal drives the push-pull control circuit and the inverter circuit to start, so as to realize the normal operation of the inverter. This design ensures the stability of the detection signal by ensuring the repeatability of the position of the safety door during the plug-in and unplug process and the stability of the movement, which not only improves the system's resistance to environmental interference, but also greatly improves the accuracy and response speed of photoelectric detection, thereby effectively achieving the expected effect of preventing no-load operation, reducing energy consumption and improving safety.

[0050] Specifically, the socket shell structure 3 includes: a shell body 301, whose cross-section is rectangular, including a first long side structure and a second long side structure parallel to the first long side structure, and a first short side structure and a second short side structure connecting the two; positioning holes 302 arranged at the four corners of the shell body 301; an LED status indication pin hole 303 and a photoresistor pin hole 304 arranged at the center position of the first short side structure and the center position of the second short side structure of the shell body 301; a bayonet 305 arranged at the center position of the first long side structure and the center position of the second long side structure of the shell body 301; and a guide groove 306 arranged at the bottom of the shell body 301 and parallel to the first long side structure.

[0051] Specifically, the output panel structure 5 includes: a panel structure body 501; an LED status indicator hole 502 arranged on the panel structure body 501; a positioning column structure 503 arranged inside the panel structure body 501; and a snap structure 504 arranged inside the panel structure body 501.

[0052] Specifically, in the embodiment of the present invention, the output panel structure 5 is connected to the socket shell structure 3 as follows: the positioning column 503 in the output panel structure 5 is connected to the positioning hole 302 on the socket shell structure 3; the buckle structure 504 is matched with the bayonet structure 305.

[0053] It should be noted that, in the embodiment of the present invention, the connection between the socket shell structure 3 and the output panel structure 5 adopts a multiple positioning and buckle structure design to ensure the stability and accuracy of the overall structure after assembly. The shell body 301 adopts a rectangular cross-section design, and the positioning holes 302 set at the four corners are engaged with the positioning column structure 503 inside the output panel to achieve precise alignment; at the same time, the LED status indication pin hole 303 and the photoresistor pin hole 304 set in the short side structure of the shell body 301 provide an accurate interface for the installation of the LED and the photoresistor in the input control circuit, ensuring the photoelectric detection coordination between the components; in addition, the bayonet 305 set in the long side structure of the shell body 301 is connected with the buckle structure 504 inside the output panel through interlocking, achieving reliable fixation; and the guide groove 306 at the bottom of the shell plays a guiding role in the movement of the safety door, so that the first safety door structure 401 and the second safety door structure 402 can be accurately docked. Through the above design, the output panel structure 5 and the socket main body structure 2 achieve a stable mechanical connection and precise positioning, which not only ensures the correct relative position between the LED status indicator 6 and the photoresistor 7, so that the input control circuit can accurately collect and process the optical signal, but also helps to improve the assembly efficiency and safety of the whole machine.

[0054] To be more specific, the embodiment of the present invention uses a photoelectric sensor to replace the micro switch detection device of the traditional portable inverter, which solves the problem of performance degradation and shortened life caused by mechanical wear: that is, the micro switch relies on mechanical contacts to realize detection, and its long-term use is prone to affect the detection accuracy and reliability due to mechanical wear. The scheme of the present invention completely avoids the problem of mechanical wear through non-contact detection, greatly improving the service life of the detection device; and the embodiment of the present invention solves the problem of slow response speed and delay. The photoelectric sensor used in the present invention has a response time of milliseconds, which can accurately detect the insertion or removal status of the plug in real time, greatly reducing system delay and improving the safety and efficiency of the equipment. In addition, the implementation scheme of the present invention also solves the technical problem of poor environmental adaptability. The micro switch is easily affected by environmental factors such as moisture and dust, which may cause oxidation of metal contacts or jamming of mechanical parts, thereby reducing its performance. The photoelectric sensor used in the present invention has excellent moisture and dust resistance, and can maintain stable operation even in complex environments, significantly enhancing the applicability and reliability of the equipment.

[0055] Furthermore, the embodiments of the present invention are further explained and elaborated in conjunction with specific drawings. The embodiments of the present invention provide a portable inverter that is safer, energy-saving, and has a longer service life, and specifically includes technical features: an inverter five-hole output panel, a five-hole socket body installed below the inverter five-hole output panel, an input control circuit arranged in the inverter main housing, a push-pull control circuit arranged in the inverter main housing, and an inverter circuit arranged in the inverter main housing. The five-hole socket body installed below the inverter five-hole output panel includes: a safety door with a baffle, and a spring for resetting the safety door. The input control circuit arranged in the inverter main housing includes: an indicator light for displaying the inverter output status, photoresistors R1 and R2 for receiving the visible light signal output by the indicator light, a photosensitive signal adjustment resistor R3, LED current limiting resistors R4 and R5, and a comparator.

[0056] In the embodiment of the present invention, the on-off of the front-stage push-pull control circuit of the inverter is realized by designing a reasonable socket body structure and an input control circuit installed under the five-hole output panel of the inverter, so that the inverter can output 220V pure sine wave AC power only when the electrical appliance plug is fully inserted into the five-hole output panel of the inverter.

[0057] Among them, in terms of the socket body structure design installed under the inverter five-hole output panel, by adding light shielding plates to the two safety doors set inside the inverter five-hole output socket body, the photoresistor receives the visible light signal generated by the inverter output status indicator when the plug of the appliance is fully inserted into the socket, and when the plug is not inserted, the photoresistor cannot receive the visible light signal generated by the inverter output status indicator. When the plug is not inserted into the socket body, the initial positions of the components inside the socket body are as follows Figure 2 As shown in the figure, if a two-core plug is inserted into the socket body, the safety door a will be guided between the plug strip and the socket shell. Figure 4 The spring is continuously compressed during this process, and the light shielding plate a integrated with the safety door a also moves together until it can no longer shield a trace of light emitted by the inverter output status indicator 1 (LED 1). Figure 5 As shown, when the two-pin plug is fully inserted, Figure 8 As shown, the resistance of the photoresistor R1 will drop to the point where the comparator output VCC can drive the push-pull control circuit to work due to receiving sufficient light. When the two-core plug is unplugged, the safety door a will reset under the action of the spring. At this time, the light shielding plate a will once again block the inverter output status indicator light 1 (LED 1) and the photoresistor R1, making it impossible for the photoresistor R3 to receive the light signal, thereby preventing the comparator output VCC from driving the push-pull control circuit to work.

[0058] Similarly, if a three-pin plug is inserted into the socket body, the safety door B will move toward the safety door A under the action of the plug strip and the guide groove of the socket shell. During this process, the spring is continuously compressed, and the safety door B is integrated with the safety door B. Figure 6 The light shielding plate b shown will also move together until it can no longer block any light emitted by the inverter output status indicator light 2 (LED 2). Fig. 9 As shown, the resistance of the photoresistor will drop to a level that allows the comparator output VCC to drive the push-pull control circuit to work due to receiving sufficient light. When the three-pin plug is unplugged, the safety door b will reset under the action of the spring, and the light shielding plate b will once again block the inverter output status indicator 2 (LED 2) and the photoresistor R2, so that the photoresistor R2 cannot receive the light signal, and thus the comparator output VCC cannot drive the push-pull control circuit to work.

[0059] The installation positions of the inverter output status indicator light 1 (LED 1), the inverter output status indicator light 2 (LED 2), the photoresistor R1, and the photoresistor R2 on the socket body are as follows: Figure 7 shown.

[0060] The assembly and installation method of each component in the embodiment of the present invention is as follows: the inverter five-hole output panel and the five-hole socket shell below the inverter five-hole output panel are transitionally matched through the four corner positioning holes of the five-hole socket shell and the four positioning columns of the inverter five-hole output panel to position the five-hole socket shell, and then the buckle on the inverter five-hole output panel is buckled with the bayonet of the five-hole socket shell, so that the five-hole socket shell and the inverter five-hole output panel are completely clamped.

[0061] The inverter output status indicator light 1 (LED 1) and the inverter output status indicator light 2 (LED 2) are inserted into the LED 1 and LED 2 pin insertion ports designed in the five-hole socket housing below the inverter five-hole output panel through their respective pins, thereby positioning the two inverter output status indicator lights.

[0062] The photoresistors R1 and R2 are inserted into the photoresistor pin insertion ports designed in the five-hole socket housing below the five-hole output panel of the inverter through their respective pins, thereby positioning and installing the two photoresistors.

[0063] To sum up, the technical solutions involved in the embodiments of the present invention involve the following important technical contents: the integrated design of the safety door and the light shielding plate improves the detection reliability; the combination of the photoresistor and the indicator light realizes low-cost non-contact detection, and the response time for the insertion of the plug is at the millisecond level, which effectively reduces the power consumption of the device during the state switching process and improves the operation efficiency of the device; the linkage design of the input control circuit and the push-pull circuit ensures the safety and energy saving of the equipment operation, and at the same time does not require the user to manually operate the switch, thereby improving the user operation experience; the working indicator light of the inverter itself is fully utilized, which greatly reduces the overall cost and simplifies the equipment structure; the photoelectric detection technology adopted has strong environmental adaptability, and can maintain stable operation in harsh environments such as humidity and dust, ensuring the safety of the equipment. Compared with the prior art, it has significant technical effects.

[0064] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent energy-saving portable inverter, characterized in that: include: Inverter main housing (1); A socket main body structure (2) arranged above the inverter main housing (1); The socket main body structure (2) comprises: a socket shell structure (3) arranged on the inverter main housing (1); A light shielding component (4) arranged inside the socket housing structure (3); An output panel structure (5) arranged on the socket main body structure (2); An input control circuit, a push-pull control circuit and an inverter circuit are arranged in the inverter main housing (1), wherein the input control circuit is used to control the working state of the push-pull control circuit; The input control circuit comprises: an LED status indicator light (6); A photoresistor (7) that realizes signal transmission with the LED status indicator light (6) through optical coupling; a comparator connected to the photoresistor (7); The LED status indicator light (6) serves as a light signal source and together with the photoresistor (7) forms a non-contact detection module for determining the plug insertion status in real time.

2. The intelligent energy-saving portable inverter according to claim 1 is characterized in that: The input control circuit further includes: An LED current limiting resistor connected in series with the LED status indicator light (6); A photosensitive signal regulating resistor connected in parallel with the photoresistor (7) and used to regulate the amplitude of the output signal of the photoresistor; A fixed reference voltage circuit is connected to the comparator.

3. The intelligent energy-saving portable inverter according to claim 2 is characterized in that: The push-pull control circuit is connected to the input control circuit and is used to convert direct current into a high-frequency pulse signal; The push-pull control circuit comprises: a push-pull controller; an input end of the push-pull controller connected to an output end of the comparator; and at least one pair of complementary MOSFETs, wherein the gates of both MOSFETs are connected to a PWM signal output end of the push-pull controller.

4. The intelligent energy-saving portable inverter according to claim 3 is characterized in that: The inverter circuit is connected to the push-pull control circuit and is used to convert the high-frequency pulse signal obtained from the push-pull control circuit into an AC power supply, including: an SPWM controller, the input end of the SPWM controller is connected to the feedback signal output end of the push-pull controller; four MOSFETs, and the four MOSFETs form a full-bridge inverter structure.

5. The intelligent energy-saving portable inverter according to claim 4 is characterized in that: The shading component (4) comprises: A first safety door structure (401) nested inside the socket shell structure (3) and slidably connected to the socket shell structure (3); A second safety door structure (402) nested inside the socket shell structure (3) and slidably connected to the socket shell structure (3); A return spring (403) is arranged between the first safety door structure (401) and the second safety door structure (402).

6. The intelligent energy-saving portable inverter according to claim 5, characterized in that: The first safety door structure (401) comprises: A first safety door body (405) is nested inside the socket shell structure (3) and slidably connected to the socket shell structure (3); A limiting groove (406) disposed inside the first safety door body (405); A first light shielding plate (407) is arranged at the front end of the first safety door body (405) and is integrally formed with the first safety door body (405).

7. The intelligent energy-saving portable inverter according to claim 6, characterized in that: The second safety door structure (402) comprises: A second safety door body (408) is nested inside the socket shell structure (3) and slidably connected to the socket shell structure (3); A limiting column (409) is arranged at the rear end of the second safety door body (408), and the limiting column (409) matches the limiting groove (406); A second light shielding plate (410) is arranged at the front end of the second safety door body (408) and is integrally formed with the second safety door body (408).

8. The intelligent energy-saving portable inverter according to claim 7, characterized in that: The socket housing structure (3) comprises: A shell body (301), the shell body (301) has a rectangular cross section, and comprises a first long side structure and a second long side structure parallel to the first long side structure, and a first short side structure and a second short side structure connecting the first long side structure and the second long side structure; Positioning holes (302) are arranged at four corners of the shell body (301); An LED state indication pin hole (303) and a photoresistor pin hole (304) arranged at the center of the first short side structure and the center of the second short side structure; A bayonet (305) arranged at the center of the first long side structure and the center of the second long side structure; A guide groove (306) is arranged at the bottom of the shell body (301) and is parallel to the first long side structure.

9. The intelligent energy-saving portable inverter according to claim 8, characterized in that: The output panel structure (5) comprises: Panel structure body (501); An LED status indicator hole (502) disposed on the panel structure body (501); A positioning column structure (503) disposed inside the panel structure body (501); A snap-fit ​​structure (504) is arranged inside the panel structure body (501).

10. The intelligent energy-saving portable inverter according to claim 9, characterized in that: The output panel structure (5) is connected to the socket shell structure (3) in the following specific steps: the positioning column (503) in the output panel structure (5) is connected to the positioning hole (302) on the socket shell structure (3); and the buckle structure (504) is matched and connected to the bayonet structure (305).

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