A rotary coupling frictional nanogenerator with constant dc output

Abstract

The application discloses a rotary coupling type friction nanogenerator with stable direct current output, comprising an upper friction power generation part, an insulating rotor layer and a lower friction power generation part, wherein the upper friction power generation part comprises an upper rotor and an upper stator arranged above the insulating rotor layer; the upper stator comprises an upper stator base, an upper friction surface, an upper trigger positive switch and an upper trigger negative switch; the upper rotor comprises an upper rotor base, an upper positive electrode, an upper negative electrode, an upper positive ring-shaped trigger switch and an upper negative ring-shaped trigger switch; the lower friction power generation part comprises a lower rotor and a lower stator arranged below the insulating rotor layer; the lower rotor comprises a lower rotor base, a lower positive electrode, a lower negative electrode, a lower positive ring-shaped trigger switch and a lower negative ring-shaped trigger switch; the lower stator comprises a lower stator base, a lower friction surface, a lower trigger positive switch and a lower trigger negative switch, and the current output phases of the upper friction power generation part and the lower friction power generation part are complementary, so that stable direct current output is obtained after coupling.

Description

TECHNICAL FIELD

[0001] The present application relates to a friction nanogenerator, in particular to a rotating coupling type friction nanogenerator with stable and constant direct current output. BACKGROUND

[0002] The traditional rotating friction nanogenerator has the characteristics of alternating current and pulse output, and cannot directly power electronic products. Therefore, an external circuit composed of various resistance components is required to integrate the output, so as to finally obtain a stable and constant direct current signal. According to the principle that the output phase difference of the friction nanogenerator is complementary, the output current can be coupled into a bidirectional constant current, and then integrated into a constant current output signal through a rectifier bridge or a capacitor and other electronic components. The overly complex external circuit system will cause energy consumption and reduce energy utilization. At present, there is still no friction nanogenerator that can directly output a stable and constant direct current signal without a rectifier circuit. Therefore, a friction nanogenerator with high integration, high stability and direct output of a stable and constant direct current signal has become an urgent problem to be solved. SUMMARY

[0003] In order to overcome the difficulties in the prior art, the present application provides a rotating coupling type friction nanogenerator with stable and constant direct current output. Through a mechanical energy collection device with simple structure, reasonable design and simple preparation method, mechanical energy in rotating mode is directly converted into electrical energy, and the electrical energy has stable and constant direct current output.

[0004] TECHNICAL SCHEME

[0005] A rotating coupling type friction nanogenerator with stable and constant direct current output comprises an upper friction power generation part, an insulating rotor layer (19) and a lower friction power generation part. The upper friction power generation part comprises an upper stator (I) and an upper rotor (II) arranged above the insulating rotor layer (19). The upper stator (I) comprises an upper stator base (1), an upper friction surface (2), an upper trigger positive switch (3) and an upper trigger negative switch (4). The upper rotor (II) comprises an upper rotor base (5), an upper positive electrode (6), an upper negative electrode (7), an upper positive ring-shaped trigger switch (8) and an upper negative ring-shaped trigger switch (9). The lower friction power generation part comprises a lower rotor (IV) and a lower stator (V) arranged below the insulating rotor layer (19). The lower rotor (IV) comprises a lower rotor base (10), a lower positive electrode (11), a lower negative electrode (12), a lower positive ring-shaped trigger switch (13) and a lower negative ring-shaped trigger switch (14). The lower stator (I) comprises a lower stator base (15), a lower friction surface (16), a lower trigger positive switch (17) and a lower trigger negative switch (18).

[0006] In the process of the upper stator (I) and the upper rotor (II) fully contacting, the upper trigger positive switch (3) and the upper trigger negative switch (4) are always in contact sliding with the upper positive annular trigger switch (8) and the upper negative annular trigger switch (9), at this time the output is a positive pulse signal; in the process of the lower rotor (IV) and the lower stator (V) fully contacting, the lower trigger positive switch (17) and the lower trigger negative switch (18) are always in contact sliding with the lower positive annular trigger switch (13) and the lower negative annular trigger switch (14), and the output is a positive pulse signal.

[0007] The positions of the upper stator (I) and the lower stator (V) are fixed; the upper rotor (II) and the lower rotor (IV) are offset by an angle of 45° in the clockwise direction around the axis.

[0008] The upper stator (I), the lower stator (V), the upper rotor (II) and the lower rotor (IV) are all prepared by the circuit printing method.

[0009] The upper trigger positive switch (3), the upper trigger negative switch (4), the lower trigger positive switch (17) and the lower trigger negative switch (18) are all circular copper contacts with a contact diameter of 3 mm.

[0010] The thickness of the upper trigger positive switch (3) and the upper trigger negative switch (4) on the friction surface is consistent with the thickness of the upper friction layer (2); the thickness of the lower trigger positive switch (17) and the lower trigger negative switch (18) on the friction surface is consistent with the thickness of the lower friction layer (16); the upper trigger positive switch (3) and the upper trigger negative switch (4) are in conduction with the upper surface of the upper stator substrate (1) and lead out the connection terminals; the lower trigger positive switch (17) and the lower trigger negative switch (18) on the lower stator (V) are in conduction with the lower surface of the lower stator substrate (15) and lead out the connection terminals.

[0011] The width of the upper annular positive trigger switch (8), the upper annular negative trigger switch (9), the lower annular positive trigger switch (13) and the lower annular negative trigger switch (14) is 3 mm.

[0012] The upper friction layer (2), the upper positive electrode (6) and the upper negative electrode (7) in the upper friction power generation part, and the lower friction layer (16), the lower positive electrode (11) and the lower negative electrode (12) in the lower friction power generation part are all 90° sector structures with a radius of 10 cm.

[0013] The upper surface of the upper stator base (1), the lower surface of the upper rotor base (5), the upper surface of the lower rotor base (10), and the lower surface of the lower stator base (15) are all connected by circuit printing, with a line width of 1 mm and a spacing of more than 3 mm.

[0014] Further, the material of the upper friction layer (2) and the lower friction layer (16) is polytetrafluoroethylene (PTFE).

[0015] Advantages

[0016] Compared with the prior art, the present application has the following advantages.

[0017] 1) No external rectifier device is needed, and a unidirectional stable DC signal can be directly outputted;

[0018] 2) The complex wiring is highly integrated, and simple to operate;

[0019] 3) The space occupancy rate is low, and the application scenarios are wide;

[0020] 4) The mechanical resistance is small while maintaining continuous contact between the trigger switch and the annular trigger switch under high-speed motion. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the rotating coupling type friction nanogenerator in the present application;

[0022] Figure 2 is the overall structure planar top view of the rotating coupling type friction nanogenerator in the present application;

[0023] Figure 3 is the working principle schematic diagram of the rotating coupling type friction nanogenerator in the present application;

[0024] Figure 4 is the waveform schematic diagram corresponding to the charge transfer process;

[0025] Figure 5 is the actual current output diagram before coupling of the present application;

[0026] Figure 6 is the actual current output diagram after coupling of the present application;

[0027] REFERENCE NUMERALS

[0028] Upper stator (I): 1-upper stator base, 2-upper friction layer, 3-upper trigger positive switch, 4-upper trigger negative switch;

[0029] Upper rotor II: 5-upper rotor base, 6-upper positive electrode, 7-upper negative electrode, 8-upper annular positive trigger switch, 9-upper annular negative trigger switch, 20-conductive hole; 21-upper wiring circuit;

[0030] Rotor III: 19 - Insulated Rotor Layer;

[0031] Lower Rotor IV: 10 - Lower Rotor Base, 11 - Lower Positive Electrode, 12 - Lower Negative Electrode, 13 - Lower Annular Positive Trigger Switch, 14 - Lower Annular Negative Trigger Switch, 20 - Conductive Holes; 22 - Lower Wiring Circuit;

[0032] Lower Stator V: 15 - Lower Stator Base, 16 - Lower Friction Layer, 17 - Lower Trigger Positive Switch, 18 - Lower Trigger Negative Switch. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme of the application more clear, the following will combine with the specific embodiments of the application to make the purpose, technical scheme of the application more clear. Figures 1-4 The technical scheme of the application will be described in detail.

[0034] The application discloses a rotating coupling type friction nanogenerator with stable and constant direct current output, comprising an upper friction power generation part (TENG1) and a lower friction power generation part (TENG2), wherein the upper friction power generation part (TENG1) comprises an upper stator (I) and a rotor II, and the lower friction power generation part (TENG2) comprises a lower rotor IV and a lower stator V.

[0035] Wherein, the upper stator (I) includes, the upper stator base 1, the upper stator friction layer 2, the upper trigger positive switch 3, the upper trigger negative switch 4;The upper stator trigger positive switch 3 and the upper stator trigger negative switch 4 are circular structure, and the conductive connection port (not marked) is located at the center of the circle;The upper friction layer 2 is two opposite 90° sector;The position of the upper trigger positive switch 3, the upper trigger negative switch 4 and the upper friction layer 2 is strictly fixed to the upper stator base 1;The upper rotor II includes, the upper positive electrode 6, the upper negative electrode 7, the upper positive ring trigger switch 8, the upper negative ring trigger switch 9;The upper positive electrode 6 is two opposite 90° sector;The upper negative electrode 7 is two opposite 90° sector;The upper positive ring trigger switch 8 and the upper negative ring trigger switch 9 are radially distributed around the upper positive electrode 6 and the upper negative electrode 7;The position of the upper positive electrode 6, the upper negative electrode 7, the upper positive ring trigger switch 8, the upper negative ring trigger switch 9 is strictly fixed to the upper rotor base 5;The upper rotor II is fixed to the upper surface of the rotor III;The lower rotor IV includes, the lower positive electrode 11, the lower negative electrode 12, the lower positive ring trigger switch 13, the lower negative ring trigger switch 14;The lower positive electrode 11 is two opposite 90° sector;The lower negative electrode 12 is two opposite 90° sector;The lower positive ring trigger switch 13 and the lower negative ring trigger switch 14 are radially distributed around the lower positive electrode 11 and the lower negative electrode 12;The position of the lower positive electrode 11, the lower negative electrode 12, the lower positive ring trigger switch 13, the lower negative ring trigger switch 14 is strictly fixed to the lower rotor base 10;The lower rotor IV is fixed to the lower surface of the rotor III;The lower stator V includes, the lower stator base 15, the lower friction layer 16, the lower trigger positive switch 17, the lower trigger negative switch 18;The lower trigger positive switch 17 and the lower trigger negative switch 18 are circular structure, and the conductive connection port is located at the center of the circle;The lower friction layer 16 is two opposite 90° sector;The position of the lower trigger positive switch 17, the lower trigger negative switch 18 and the lower friction layer 16 is strictly fixed to the lower stator base 15;The base of the upper stator I, the upper rotor II, the lower rotor IV and the lower stator V layer is divided into friction surface and wiring surface;The upper surface of the upper stator base (1) of the upper stator I is the wiring surface (I-wire), and the lower surface is the friction surface (I-mo);The upper surface of the upper rotor base (5) of the upper rotor II is the friction surface (II-mo), and the lower surface is the wiring surface (II-wire);The upper surface of the lower rotor base (10) is the wiring surface (IV-wire), and the lower surface is the friction surface (IV-mo);The upper surface of the lower stator base (15) of the lower stator V is the friction surface (V-mo), and the lower surface is the wiring surface (V-wire);The rotor III, namely the insulation rotor layer (19), is divided into the upper surface (III-upper) and the lower surface (III-lower). The position of the upper stator I (I-mo) and the lower stator V (V-mo) is strictly fixed, and longitudinally coincides;The upper rotor II and the lower rotor IV are 45 degrees apart in clockwise angle;Due to the wiring design, the upper friction power generation part (TENG1) and the lower friction power generation part (TENG2) can directly output stable direct current after coupling.

[0036] Further, the upper trigger positive switch 3 and the upper trigger negative switch 4 in the upper stator I are both circular with a diameter of 3 mm, and the conductive connection port with a diameter of 0.3 mm is located at the center of the circle, which is prepared by circuit printing and made of copper.

[0037] Preferably, the width of the upper positive ring trigger switch 8 and the upper negative ring trigger switch 9 in the upper rotor II is 3 mm. In order to improve the fault tolerance of the contact between the upper positive ring trigger switch 8 and the upper trigger positive switch 3, the width of the upper positive ring trigger switch can be greater than 3 mm.

[0038] Preferably, the width of the upper positive ring trigger switch 8 and the upper negative ring trigger switch 9 in the upper rotor II is 3 mm. In order to improve the fault tolerance of the contact between the upper positive ring trigger switch 8 and the upper trigger positive switch 3, the width of the upper positive ring trigger switch can be greater than 3 mm.

[0039] Further, the material of the friction layer 2 in the upper stator (I) is PTFE.

[0040] Preferably, the 90° sector of the upper friction layer 2, the 90° sector of the upper positive electrode 6, and the 90° sector of the upper negative electrode 7 are all made of metal copper, and the radius is 10 cm. The sizes of the three are completely the same, and the longitudinal positions can be coincided.

[0041] Preferably, the thickness of the upper trigger positive switch 3 and the upper trigger negative switch 4 in the upper stator (I) on the lower surface (I-mo) of the upper stator base 1 is equal to or greater than the thickness of the upper friction layer 2, so as to ensure the contact with the upper positive ring trigger switch 8 and the upper negative ring trigger switch 9 respectively.

[0042] Further, the bottom of the lower surface wiring layer (II-connection) of the upper rotor II is provided with an upper wiring circuit 21 corresponding to the upper positive ring trigger switch 8 and the upper negative ring trigger switch 9 and electrically connected thereto through the conductive hole 20. The bottom of the lower surface wiring layer (IV-connection) of the lower rotor IV is provided with a lower wiring circuit 22 corresponding to the lower positive ring trigger switch 13 and the lower negative ring trigger switch 14 and electrically connected thereto through the conductive hole 20. The metal wire width of the upper wiring circuit 21 and the lower wiring circuit 22 is 3 mm, which is flexible and does not affect the effect. The wire spacing is not less than 3 mm to prevent discharge between metals.

[0043] Further, the rotor III is made of rigid insulating material, which is flexible and insulating, so as to prevent the upper rotor II and the lower rotor IV from being short-circuited.

[0044] Further, the features of the rotor IV are completely consistent with those of the rotor II.

[0045] Preferably, the rotor II is fixed to the upper surface of the rotor III, and the rotor IV is fixed to the lower surface of the rotor III.

[0046] Preferably, the upper rotor II and the lower rotor IV are 45 degrees apart.

[0047] Furthermore, the characteristics of the lower stator V are completely identical to those of the upper stator (I), with a fixed and overlapping longitudinal position.

[0048] Furthermore, Figure 2 This is a top view of a rotary-coupled triboelectric nanogenerator with a stable DC output according to the present invention, as shown below. Figure 2 As shown, the phases of the upper stator (I) (I-mo) and the lower stator V (V-mo) are fixed.

[0049] Furthermore, such as Figure 2 As shown, the upper rotor II and the lower rotor IV are fixed to the upper and lower surfaces of rotor III after being 45 degrees out of clockwise phase. The specific wiring methods are shown in Figure II-connection and IV-connection.

[0050] Furthermore, Figure 3 This is a schematic diagram illustrating the working principle of a rotary-coupled triboelectric nanogenerator with a stable DC output according to the present invention.

[0051] in, Figure 3 This is a schematic diagram of the charge transfer mechanism of a rotary-coupled triboelectric nanogenerator with a stable DC output according to the present invention. For ease of expression, the cross-sectional unfolded diagram is expressed as relative motion.

[0052] Specifically, during the friction process between the upper positive electrode 6 and upper negative electrode 7 of the upper triboelectric generator (TENG1) and the upper friction layer 2, the surface of the upper friction layer 2 carries a negative charge. Due to the electrostatic induction effect, the corresponding electrode layer of the upper friction layer 2 will induce an equal amount of opposite positive charge, thus creating a potential difference between the upper positive electrode 6 and the upper negative electrode 7, thereby forming an alternating positive and negative sinusoidal current signal; the wiring method of the upper positive ring trigger switch 8, upper negative ring trigger switch 9, upper positive electrode 6, and upper negative electrode 7 is described in [reference needed]. Figure 3 ; the upper positive ring-shaped trigger switch 8 and the upper negative ring-shaped trigger switch 9 rectify the charges in the upper positive electrode 6 and the upper negative electrode 7, output through the upper trigger positive switch 3 and the upper trigger negative switch 4, and finally all output as positive current signals.

[0053] Specifically, when the lower positive electrode 11 and the lower negative electrode 12 of the lower TENG 2 rub against the lower friction layer 16, the surface of the lower friction layer 16 is negatively charged, and due to the electrostatic induction effect, the lower friction layer 16 will induce an equal and opposite positive charge on the corresponding electrode layer, thereby generating a potential difference between the lower positive electrode 11 and the lower negative electrode 12, thereby forming a positive-negative alternating sine wave current signal; the lower positive ring-shaped trigger switch 13, the lower negative ring-shaped trigger switch 14, the lower positive electrode 11, and the lower negative electrode 12 are connected in the manner shown in Figure 3 ; the lower positive ring-shaped trigger switch 13 and the lower negative ring-shaped trigger switch 14 rectify the charges in the lower positive electrode 11 and the lower negative electrode 12, output through the lower trigger positive switch 17 and the lower trigger negative switch 18, and finally all output as a left-to-right current signal output from the lower trigger positive switch 17 to the lower trigger negative switch 18.

[0054] Further, Figure 3 In the upper frictional power generation part (TENG1), the upper frictional layer 2 is completely coincided with the upper positive electrode 6, at this time, the potential difference between the upper positive electrode 6 and the upper negative electrode (7) reaches the maximum, the charge transfer is zero, and the current is zero;

[0055] Further, Figure 3 In the lower friction power generation part (TENG2), the lower friction layer 16 is located between the lower positive electrode 11 and the lower negative electrode 12, at this time, the potential difference between the lower positive electrode 11 and the lower negative electrode 12 is zero, the charge transfer speed is the fastest, and the current reaches the peak value, at this time, the lower positive charge flows from the positive electrode 11 to the lower negative electrode 12, the lower positive electrode 11 flows to the lower positive trigger switch 17 through the lower positive ring trigger switch 13, and then flows to the lower negative trigger switch 18 through the lower positive trigger switch 17 (charge flow direction: 11-13-17-18-14-12), obtaining a peak signal from left to right;

[0056] Further, Figure 3 In the coupled TENG, since the upper friction power generation part (TENG1) current value is zero, the current in the lower friction power generation part (TENG2) reaches the peak value, so the final output of this state is the peak signal from left to right.

[0057] Further, Figure 3 <ii>In the upper frictional power generation part (TENG1), the upper frictional layer 2 is located between the upper positive electrode 6 and the upper negative electrode 7, at this time, the potential difference between the upper positive electrode 6 and the upper negative electrode 7 is zero, the charge transfer speed is the fastest, and the current reaches the peak value, at this time, the positive charge flows from the upper positive electrode 6 to the upper negative electrode 7, through the upper positive ring-shaped trigger switch 8 to the upper positive trigger switch 3, and through the upper positive trigger switch 3 to the upper negative trigger switch 4 (charge flow direction: 6-8-3-4-9-7), a peak signal from left to right is obtained;

[0058] Further, Figure 3 <ii>In the lower friction power generation part (TENG2) of the triboelectric nanogenerator, the lower triboelectric layer 16 is completely overlapped with the lower negative electrode 12, at this time, the potential difference between the lower positive electrode 11 and the lower negative electrode 12 reaches the maximum, the charge transfer is zero, and the current is zero;

[0059] Further, Figure 3 <ii>In the coupled TENG, since the current in the upper friction power generation part (TENG1) reaches the peak value and the current value in the lower friction power generation part (TENG2) is zero, the final output of this state is a peak signal from left to right.

[0060] Further, Figure 3 <iii>In the upper frictional power generation part (TENG1), the upper frictional layer 2 is completely coincided with the upper positive electrode 6, at this time, the potential difference between the upper positive electrode 6 and the upper negative electrode 7 reaches the maximum, the charge transfer is zero, and the current is zero;

[0061] Further, Figure 3 <iii>In the lower friction power generation part (TENG2), the lower friction layer 16 is located between the lower positive electrode 11 and the lower negative electrode 12, at this time, the potential difference between the lower positive electrode 11 and the lower negative electrode 12 is zero, the charge transfer speed is the fastest, and the current reaches the peak value, at this time, the lower positive charge flows from the lower negative electrode 12 to the lower positive electrode 11, through the lower positive ring-shaped trigger switch 14 to the lower positive trigger switch 17, and through the lower positive trigger switch 17 to the lower negative trigger switch 18 (charge flow direction: 12-14-17-18-13-11), a peak signal from left to right is obtained;

[0062] Further, Figure 3 <iii>In the coupled TENG, since the upper friction power generation part (TENG1) current value is zero, the current in the lower friction power generation part (TENG2) reaches the peak value, so the final output of this state is the peak signal from left to right.

[0063] Further, Figure 3 <iv>In the upper frictional power generation part (TENG1), the upper frictional layer 2 is located between the upper positive electrode 6 and the upper negative electrode 7, at this time, the potential difference between the upper positive electrode 6 and the upper negative electrode 7 is zero, the charge transfer speed is the fastest, and the current reaches the peak value, at this time, the positive charge flows from the upper negative electrode 7 to the upper positive electrode 6, flows to the upper positive trigger switch 3 through the upper negative ring trigger switch 9, and flows to the upper negative trigger switch 4 through the upper positive trigger switch 3 (charge direction: 7-9-3-4-8-6-7), a peak signal from left to right is obtained;

[0064] Further, Figure 3 <iv>In the lower friction power generation part (TENG2) of the triboelectric nanogenerator, the lower triboelectric layer 16 is completely overlapped with the lower negative electrode 12, at this time, the potential difference between the lower positive electrode 11 and the lower negative electrode 12 reaches the maximum, the charge transfer is zero, and the current is zero;

[0065] Further, Figure 3 <iv>In the coupled TENG, because the current in the upper friction power generation part (TENG1) reaches the peak value, and the current in the lower friction power generation part (TENG2) is zero, the state finally outputs the peak signal from left to right.

[0066] wherein, Figure 3 is a waveform diagram corresponding to the charge transfer process of a rotating coupled friction nanogenerator with stable direct current output in the application, and the waveform is Figure 4 The description process corresponds one to one.

[0067] Further, Figure 3 is the actual current output diagram before coupling of the application, further, Figure 5 Figure 6 is the actual current output diagram after coupling of the application. The application can realize the direct conversion of mechanical energy from the rotating mode to electrical energy, and the electrical energy has stable direct current output.

[0068] The above examples are only used to illustrate the technical solutions of the application, rather than limit them; although the application has been described in detail with reference to the foregoing description, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing examples, or equivalently replace some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.< / iv> < / iv> < / iv> < / iii> < / iii> < / iii> < / ii> < / ii> < / ii>

Claims

1. A rotary-coupled triboelectric nanogenerator with stable DC output, characterized in that: A rotary-coupled triboelectric nanogenerator with stable DC output includes an upper triboelectric generator, an insulating rotor layer (19), and a lower triboelectric generator. The upper triboelectric generator includes an upper stator (I) and an upper rotor (II) disposed above the insulating rotor layer (19). The upper stator (I) includes an upper stator substrate (1), an upper triboelectric layer (2), an upper trigger positive switch (3), and an upper trigger negative switch (4). The upper rotor (II) includes an upper rotor substrate (5), an upper positive electrode (6), an upper negative electrode (7), and an upper annular... The lower triboelectric generator includes a positive trigger switch (8) and an upper ring negative trigger switch (9); the lower triboelectric generator includes a lower rotor (IV) and a lower stator (V) disposed below the insulating rotor layer (19); the lower rotor (IV) includes a lower rotor base (10), a lower positive electrode (11), a lower negative electrode (12), a lower ring positive trigger switch (13), and a lower ring negative trigger switch (14); the lower stator (V) includes a lower stator base (15), a lower triboelectric layer (16), a lower trigger positive switch (17), and a lower trigger negative switch (18); During the process of the upper stator (I) and the upper rotor (II) being in complete contact, the upper trigger positive switch (3) and the upper trigger negative switch (4) are always in contact with the upper annular positive trigger switch (8) and the upper annular negative trigger switch (9), and the output is a positive pulse signal; during the process of the lower rotor (IV) and the lower stator (V) being in complete contact, the lower trigger positive switch (17) and the lower trigger negative switch (18) are always in contact with the lower annular positive trigger switch (13) and the lower annular negative trigger switch (14), and the output is a positive pulse signal; The positions of the upper stator (I) and the lower stator (V) are fixed; the upper rotor (II) and the lower rotor (IV) are offset by an angle of 45° in a clockwise direction around the axis; The upper friction layer (2), upper positive electrode (6), and upper negative electrode (7) in the upper triboelectric generator, and the lower friction layer (16), lower positive electrode (11), and lower negative electrode (12) in the lower triboelectric generator are all 90° fan-shaped structures with a radius of 10 cm.

2. The rotary-coupled triboelectric nanogenerator with stable DC output according to claim 1, characterized in that: The upper stator (I), the lower stator (V), the upper rotor (II), and the lower rotor (IV) are all fabricated using circuit printing.

3. A rotary-coupled triboelectric nanogenerator with stable DC output according to claim 2, characterized in that: The upper trigger positive switch (3), upper trigger negative switch (4), lower trigger positive switch (17) and lower trigger negative switch (18) are all circular copper metal contacts with a contact diameter of 3 mm.

4. A rotary-coupled triboelectric nanogenerator with stable DC output according to claim 1, characterized in that: The thickness of the upper trigger positive switch (3) and the upper trigger negative switch (4) on the upper friction surface is the same as the thickness of the upper friction layer (2); the thickness of the lower trigger positive switch (17) and the lower trigger negative switch (18) on the friction surface is the same as the thickness of the lower friction layer (16); the upper trigger positive switch (3) and the upper trigger negative switch (4) are connected to the upper surface of the upper stator base (1) and lead out a terminal; the lower trigger positive switch (17) and the lower trigger negative switch (18) on the lower stator (V) are connected to the lower surface of the lower stator base (15) and lead out a terminal.

5. A rotary-coupled triboelectric nanogenerator with stable DC output according to claim 2, characterized in that: The width of the upper ring positive trigger switch (8), the upper ring negative trigger switch (9), the lower ring positive trigger switch (13), and the lower ring negative trigger switch (14) is 3 mm.

6. A rotary-coupled triboelectric nanogenerator with stable DC output according to claim 2, characterized in that: The upper surface of the upper stator base (1), the lower surface of the upper rotor base (5), the upper surface of the lower rotor base (10), and the lower surface of the lower stator base (15) are all connected by circuit printing, with a line width of 1 mm and a spacing of more than 3 mm.

7. A rotary-coupled triboelectric nanogenerator with stable DC output according to claim 1 or 4, characterized in that: Furthermore, the upper friction layer (2) and the lower friction layer (16) are made of polytetrafluoroethylene (PTFE).

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