Resistance transition type arc extinction structure

Abstract

The utility model relates to the field of electric appliances and the field of automatic control, and mainly relates to a resistance transition type arc extinction structure, which comprises a first electrode P1, a second electrode P2, a transition resistor R and a main switch K1, thereby forming a resistance transition type arc extinction switch K. The main switch K1 firstly enters a higher resistance value conduction state of the transition resistor R, and then the resistance value of the transition resistor R is transited from a higher resistance value to a resistance value close to 0; in the random disconnection process of the resistance transition type arc extinction switch K, the resistance of the main switch K1 is transited from the resistance approaching to 0 to a relatively high resistance; and the electrical gap of the main switch K1 is set, so that the electrical gap difference value delta S between the transition resistor R and the main switch K1 is greater than or equal to the electrical gap value specified by the standard. According to the utility model, the critical defect that a common contact switch is easy to arc is overcome, the critical defect that the silicon controlled rectifier and the solid-state relay are easy to heat is overcome, the stability and reliability are realized, the service life is long, and the cost performance is highest.

Description

Technical Field

[0001] The utility model relates to the fields of electrical appliances and automation and intelligent control, and relates to a resistance-transition type arc extinguishing structure. Background Art

[0002] Any circuit cannot do without a switch during use. However, most existing switches will generate an arcing phenomenon when disconnecting and closing, and the arcing phenomenon will cause the following hazards and potential accident hazards:

[0003] 1. The instantaneous high temperature and heat generated by switch arcing will damage the circuit and electrical equipment, and even cause frequent fire accidents.

[0004] 2. This arcing phenomenon will generate instantaneous high-frequency pulses, which have a particularly great impact on the circuit, especially on automatic control circuits, programmed control circuits, and intelligent circuits that rely on input signals for control.

[0005] 3. Switch arcing will seriously damage the switch contacts, directly affecting the load-carrying capacity and service life of the execution circuit.

[0006] For more than a hundred years, until now, the technical solutions for completely solving the hazards of switch arcing in various countries around the world have always been a major difficult problem. Until now, generally speaking, there are mainly the following mainstream technical solutions:

[0007] 1. The technical solution of vacuum switches (including various vacuum relays) has a relatively ideal arc extinguishing effect, but its structure and manufacturing process are complex, and the price is relatively high. Currently, it is mainly used in aerospace, aviation, and underground explosion-proof and other occasions.

[0008] 2. The technical solution of thyristors and solid-state relays is a non-contact switch with a very ideal arc extinguishing effect. However, during use, it will generate a large amount of heat and requires an additional large-sized radiator; on the other hand, the overload current allowed by thyristors is usually 3 times the rated current, while the circuit starting current is normally required to be 3 - 7 times the rated current. Especially when the circuit load is an inductive load such as an AC motor, the uses of thyristors and solid-state relays are far less extensive than those of ordinary AC contactors and ordinary switches.

[0009] 3. The technical solution of arc blowing (including arc initiation and arc transformation) is to improve the switch structure, thereby changing the magnetic field strength and arc shape, so that the arc wind generated by arcing dissipates heat to avoid damaging the switch contacts; however, the arc extinguishing effect of this technical solution is not very ideal, and its structure and manufacturing process are complex, and the cost performance is not very high. For example, the arc extinguishing AC contactor manufactured by Siemens Company in Germany currently belongs to this type of arc extinguishing switch.

[0010] 4. Arc suppression technical solution. The characteristic of this technical solution is that when the switch arcs instantaneously, a special structure is used to release inert gas or insulating film to isolate the arcing area, playing a certain role in arc suppression. However, its arc suppression effect is not very ideal, and its structure and process are very complex, with a relatively low cost performance.

[0011] 5. Double-point synchronous arc suppression technical solution. The characteristic of this technical solution is to reduce the contact conduction time by improving the switch structure and manufacturing process, so as to achieve the purpose of arc suppression. This technical solution is simple and practical and is one of the most widely used arc suppression technical solutions in the world at present, but its arc suppression effect is not very ideal.

[0012] 6. Main and auxiliary structure arc suppression technical solution. This solution uses the arc-free characteristics of thyristors and contactless switches similar to thyristors to control the voltage at the moment of switch closing and opening within 0.3V - 0.7V, thus protecting the main switch contacts from arcing during conduction or disconnection; the arc suppression effect of this arc suppression solution is very good, and compared with ordinary mechanical switches, vacuum switches, triodes, and solid-state relays in terms of its structure and cost, it has the advantages of better arc suppression effect, simpler, more practical, more economical, and higher cost performance. However, due to the current problems in manufacturing methods, parameter settings, and structure optimization of this technical solution, there have always been fatal defects in the arc suppression effect, manufacturing method, manufacturing process, and service life of this patented product; its most fatal defect is that among power triodes, thyristors (silicon-controlled rectifiers), and other controllable contactless switches, thyristors (silicon-controlled rectifiers) have strong vitality due to their advantages such as high efficiency, good control characteristics, fast response speed, long life, small size, light weight, high reliability, and easy maintenance, and are simple, practical, and cost-effective. However, when thyristors (silicon-controlled rectifiers) are used as arc suppression auxiliary switches, they have no arc suppression effect in the interval approaching the zero-crossing point when the circuit current is alternating current (sinusoidal wave). If the main switch conducts or disconnects at this time, it will cause the main switch to arc strongly. The probability of arcing is: for an electrical system with a voltage frequency of 50Hz, 100 times per second (because the conduction current passes through the zero-crossing point 2 times per cycle), and for an electrical system with a voltage frequency of 60Hz, 120 times per second; in actual circuit use, the closing and opening of the switch are random events, so this problem is a very fatal problem in the use of thyristors; usually, when the main switch randomly conducts and disconnects instantaneously, due to the lack and instability of the trigger current of the existing main and auxiliary switches, the bidirectional thyristor may be in the cut-off interval. In this case, a voltage source or current source is set between the trigger poles of the auxiliary switch and the contactless switch in the existing technical solution to create a continuous, stable, and controllable trigger current, basically solving the trigger current problem of the thyristor; but there is an important core problem that has been ignored by people, which is that when the main switch disconnects and the auxiliary switch conducts instantaneously, the contactless switch requires a response speed, which will form a time difference during the transition between the main and auxiliary switches, causing the main switch to arc.

[0013] 7. Complementary circuit arc extinguishing technical solution. The characteristic of this technical solution is to utilize the complementary response speed time difference between two switches when they are connected in parallel, and they conduct and disconnect instantaneously in turn. For a switch node, adding the double-point synchronous arc extinguishing scheme of the switch, and its load-carrying capacity can be expanded by more than 2 times, and the service life can be increased by 3 - 5 times. Although the cost performance of this arc extinguishing scheme is good, its arc extinguishing effect is not very ideal, so it cannot be used in occasions with particularly high requirements for arc extinguishing. Summary of the Utility Model

[0014] To overcome the above-mentioned disadvantages, the purpose of the present utility model is to provide a resistance-transition type arc extinguishing structure to the art, fundamentally eliminating the arc starting hidden danger of the switch and solving the problem of switch arc extinguishing.

[0015] Solution 1: A resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a transition resistor R, and a main switch K1, thereby constituting a resistance-transition type arc extinguishing switch K; (1) The main switch K1 includes the transition resistor R; (2) The transition resistor R and the main switch K1 are connected in series between the electrode P1 and the electrode P2; (3) Set the electrical contact internal resistance of the main switch K1 to approach 0 ohms, and set the resistance value of the transition resistor R to be greater than the electrical contact internal resistance of the main switch K1; the electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current working state, and its resistance value approaches 0; (4) The transition resistor R has the following self-structural functions: reasonably set the resistance value of the transition resistor R so that when the main switch K1 is in the random on and off process, the current passing through the main switch K1 is the arc starting current limiting Ir, and the arc starting current limiting Ir is the current that limits the arc starting at the moment of on and off of the main switch K1; (5) The main switch K1 has the following structural functions: during the random closing process of the resistance-transition type arc extinguishing switch K, the main switch K1 first enters the conduction state with a relatively high resistance value of the transition resistor R, and then its resistance value transitions from a relatively high resistance value to approach 0 ohms until the electrical contact internal resistance of the main switch K1 conducts; during the random opening process of the resistance-transition type arc extinguishing switch K, the resistance value of the main switch K1 transitions from approaching 0 ohms to a relatively high resistance value until the resistance-transition type arc extinguishing switch K is opened; the relatively high resistance value resistor is a resistor that can generate the arc starting current limiting Ir in the circuit; (6) Reasonably set the electrical clearance of the main switch K1 so that the electrical clearance difference ΔS between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value conforms to the international IEC standard and the relevant standards of countries and regions around the world; the electrical clearance includes the creepage distance specified by the standard; (7) The resistance-transition type arc extinguishing switch K includes at least 1 transition resistor R.

[0016] During the random on / off process of the resistance-transition type arc suppression switch K, at the moment of on / off, the resistance-transition type arc suppression switch K is in the conduction state for restricting the arcing current Ir, eliminating the basic condition for the resistance-transition type arc suppression switch K to arc. Additionally, during the conduction period of the main switch K1, the voltage between the electrodes P1 and P2 is 0, and the current in the branch of the transition resistance R is in the cut-off state, so it will not generate heat.

[0017] Solution 2: A resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a transition resistor R, and a main switch K1, thus constituting a resistance-transition type arc extinguishing switch K; (1) The main switch K1 includes the transition resistor R; (2) The transition resistor R includes stepwise transition resistors R2 and R3 connected in series in the circuit of the main switch K1; (3) Set the electrical contact internal resistance of the main switch K1 to approach a resistance value of 0, set the resistance value of the stepwise transition resistor R2 to be greater than the resistance value of the stepwise transition resistor R3, and the resistance value of the stepwise transition resistor R3 to be greater than the electrical contact internal resistance of the main switch K1; The electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current working state, and its resistance value approaches 0; (4) The stepwise transition resistors R2, R3, and the main switch K1 are connected in series between the electrodes P1 and P2; (5) The transition resistor R has the following structural functions: Reasonably set the resistance value of the transition resistor R so that when the main switch K1 is in the random on and off process, the current passing through the main switch K1 is the arc starting current limiting Ir, and the arc starting current limiting Ir is the current that limits the arc starting at the moment of on and off of the main switch K1; (6) The resistance-transition type arc extinguishing switch K has the following self-structural functions: During the random closing process of the resistance-transition type arc extinguishing switch K, the main switch K1 first enters the conduction state with a relatively high resistance value of the stepwise transition resistor R2, then transitions to the conduction state with a slightly lower resistance value of the stepwise transition resistor R3, and finally transitions to the conduction state with a resistance value approaching 0 of the main switch K1. During this period, the resistance value of the resistance-transition type arc extinguishing switch K transitions from a relatively high resistance value to a relatively low resistance value until it approaches a resistance value of 0 and the electrical contact internal resistance of the main switch K1 conducts; During the random opening process of the resistance-transition type arc extinguishing switch K, the main switch K1 transitions from the conduction state with a resistance value approaching 0 to the conduction state with a relatively high resistance value of the stepwise transition resistor R3, and finally transitions to the conduction state with an even higher resistance value of the stepwise transition resistor R2 until the transition resistor R2 is disconnected and the resistance-transition type arc extinguishing switch K is disconnected; The relatively high resistance resistor is a resistor that can generate the arc starting current limiting Ir in the circuit; (7) Setting the resistance value of the transition resistor R has the following functions: When the resistance-transition type arc extinguishing switch K is in the random instantaneous on and off process, the arc starting current limiting Ir passing through the main switch K1 is a weak current that limits the arc starting; (8) Reasonably set the electrical clearance of the main switch K1 so that the difference in electrical clearance ΔS between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value complies with the international IEC standard and the relevant standards of countries and regions around the world; The electrical clearance includes the creepage distance specified by the standard; (9) The resistance-transition type arc extinguishing switch K includes at least 2 stepwise transition resistors;

[0018] During the random on / off process of the resistance-transition type arc extinguishing switch K; at the moment of conduction, the grading transition resistor R2 with a higher resistance conducts first, and then transitions to the conduction of the grading transition resistor R3 with a lower resistance, and finally transitions to the conduction of the electrical contact internal resistance of the main switch K1 that approaches a resistance of 0. At this time, the current passing through the main switch K1 transitions from a weak current that restricts arcing to a stronger current, and the arcing condition has been eliminated; at the moment of disconnection, the electrical contact internal resistance of the main switch K1 conducts and transitions to the conduction of the higher resistance internal resistance of the grading transition resistor R3, and then transitions to the conduction of the grading transition resistor R2 with an even higher resistance. At this time, the current passing through the main switch K1 conducts from a stronger current to a weak current that restricts arcing, and finally the grading transition resistor R2 disconnects, and the resistance-transition type arc extinguishing switch K turns off; the basic condition for the resistance-transition type arc extinguishing switch K to arc is eliminated; in addition, during the conduction of the main switch K1, the voltage between the electrodes P1 and P2 is 0, and the transition resistor R and the branch current are both in a cut-off state, so there is no heat generation.

[0019] Solution 3: A resistance-transition type arc suppression structure, including a first electrode P1, a second electrode P2, a transition resistor R, a main switch K1, and an auxiliary switch Kf, thus constituting a resistance-transition type arc suppression switch K; (1) The main switch K1 includes the transition resistor R; (2) The transition resistor R includes the auxiliary switch Kf, and the transition resistor R and the auxiliary switch Kf are connected in series and then connected in parallel with the main switch K1 between the electrodes P1 and P2; (3) Set the electrical contact internal resistance of the main switch K1 to approach a resistance value of 0, and set the resistance value of the transition resistor R to be greater than the electrical contact internal resistance of the main switch K1; The electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current working state; (4) The transition resistor R has the following structural functions: reasonably set the resistance value of the transition resistor R so that when the main switch K1 is in the random on and off process, the current passing through the main switch K1 is the arc-starting current limiting Ir, and the arc-starting current limiting Ir is the current that limits the arc starting at the moment of on and off of the main switch K1; (5) The resistance-transition type arc suppression switch K has the following self-structural functions: during the random closing process of the resistance-transition type arc suppression switch K, the auxiliary switch Kf and the transition resistor R first enter the high-resistance conduction state, and then transition to the main switch K1 approaching a resistance value of 0 conduction state; during the random opening process of the resistance-transition type arc suppression switch K, the main switch K1 transitions from the conduction state approaching a resistance value of 0 to the high-resistance conduction state of the auxiliary switch Kf and the transition resistor R, and finally the auxiliary switch Kf is turned off, and the resistance-transition type arc suppression switch is turned off; The high-resistance resistor is a resistor that can generate the arc-starting current limiting Ir in the circuit; (6) Set the resistance value of the transition resistor R to have the following function: when the resistance-transition type arc suppression switch K is in the conduction state of the arc-starting current limiting Ir, the current passing through the transition resistor R is the weak current that limits the arc; (7) Reasonably set the electrical clearance of the main switch K1 so that the difference in electrical clearance ΔS between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value conforms to the international IEC standard and the relevant standards of countries and regions around the world; The electrical clearance includes the creepage distance specified by the standard; (8) The resistance-transition type arc suppression switch K includes at least 1 transition resistor R.

[0020] When the resistance-transition type arc suppression switch K conducts randomly at the moment of conduction, the transition resistor R and the auxiliary switch Kf conduct first. At this time, the current passing through the resistance-transition type arc suppression switch K is a weak current that restricts arcing. Subsequently, it transitions to the conduction of the main switch K1 due to the internal resistance of the electrical contact. After the main switch K1 conducts, the weak current that restricts arcing flowing through the auxiliary switch Kf automatically cuts off. At the moment of disconnection, the main switch K1 transitions from the conduction state with an internal resistance of the electrical contact approaching 0 resistance value to the conduction state with a relatively high resistance value of the auxiliary switch Kf and the transition resistor R. Finally, the auxiliary switch Kf disconnects, and the resistance-transition type arc suppression switch K turns off, eliminating the basic conditions for arcing of the resistance-transition type arc suppression switch K. Additionally, during the conduction of the main switch K1, the voltage between the electrodes P1 and P2 approaches 0, and the current in the branch of the transition resistor R is in a cut-off state, so it does not generate heat.

[0021] Solution 4: A resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a transition resistor R, a main switch K1, an auxiliary switch Kf, a shunt resistor R1, and a contactless switch B, thus forming a resistance-transition type arc extinguishing switch K; (1) The main switch K1 includes the transition resistor R; (2) The transition resistor R includes the auxiliary switch Kf, the shunt resistor R1, and the contactless switch B; (3) The transition resistor R, the auxiliary switch Kf, and the shunt resistor R1 are connected in series, and then are connected in parallel with the main switch K1 and the contactless switch B between the electrodes P1 and P2; where the common connection point of the auxiliary switch Kf and the shunt resistor R1 is connected to the trigger electrode of the contactless switch B; (3) Set the electrical contact internal resistance of the main switch K1 to approach a resistance value of 0, and set the resistance value of the transition resistor R to be greater than the electrical contact internal resistance of the contactless switch B, and the electrical contact internal resistance of the contactless switch B is greater than the electrical contact internal resistance of the main switch K1; the electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current working state; (4) The contactless switch B is a controllable non-arc switch; (5) The transition resistor R has the following structural functions: reasonably set the resistance value of the transition resistor R so that when the main switch K1 is in the random on and off process, the current passing through the main switch K1 is the arc starting current limit Ir, and the arc starting current limit Ir includes two branch currents: a. The weak current for arc starting limitation passing through the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1; b. The trigger current and conduction current passing through the contactless switch B; (6) The resistance-transition type arc extinguishing switch K has the following self-structural functions: during the random closing process of the resistance-transition type arc extinguishing switch K, the auxiliary switch Kf, the transition resistor R, and the shunt resistor R1 first enter the weak current conduction state for arc starting limitation, and then, after a response speed delay time difference, transition to the conduction state of the contactless switch B; finally, transition to the electrical contact internal resistance conduction state of the main switch K1; during the random opening process of the resistance-transition type arc extinguishing switch K, first, the main switch K1 transitions from the conduction state with a resistance value approaching 0 to the stronger resistance conduction state of the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1, and after a response speed delay time difference, transitions to the conduction state of the contactless switch B, and finally the auxiliary switch Kf is opened, the branch current of the shunt resistor R1 is cut off, the conduction current of the contactless switch B passes through zero and is cut off, and the resistance-transition type arc extinguishing switch K is turned off; (7) Reasonably set the electrical clearance of the main switch K1 so that the difference in electrical clearance ΔS between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value conforms to the international IEC standard and the relevant standards of countries and regions around the world; the electrical clearance includes the creepage distance specified by the standard; (8) The resistance-transition type arc extinguishing switch K includes at least 1 transition resistor R.

[0022] During the random on / off process of the resistance-transition type arc extinguishing switch K, at the moment of closing: the auxiliary switch Kf, the transition resistor R, and the shunt resistor R1 first enter the weak current conduction state for arc starting limitation. After a response speed delay time difference, it transitions to the triggered conduction state of the non-contact switch B, and finally to the stronger current conduction state of the main switch K1, eliminating the arc starting condition of the resistance-transition type arc extinguishing switch K. Similarly, at the moment of opening, the main switch K1 transitions from the stronger current conduction state to the weak current conduction state of the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1 for arc starting limitation. After a response speed delay time difference, the non-contact switch B is triggered to conduct. Finally, the auxiliary switch Kf is turned off, and the weak current for arc starting limitation of the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1 is cut off. The conduction current of the non-contact switch B passes through 0 and is cut off, and the resistance-transition type arc extinguishing switch K is turned off. In addition, during the conduction of the main switch K1, the voltage between the electrodes P1 and P2 is 0, and the branch currents of the transition resistor R and the auxiliary switch Kf and the triggering and conduction currents of the non-contact switch B are in the cut-off state, so they will not generate heat.

[0023] Solution Five: According to Solution One, the arc extinguishing structure and method of Solution One of the present invention are applicable to AC power supplies and DC power supplies.

[0024] Solution Six: According to Solution Four, the non-contact switch B of Solution Four of the present invention is a controllable arc-free switch, which is applicable to the controllable arc-free switch for arc starting limitation.

[0025] Compared with the prior art, the advantages of the present invention are as follows:

[0026] 1. The advantages of mechanical switches, various relays, and AC contactors are being strong, durable, and having a strong load-carrying capacity. The only disadvantage is that the switch will frequently generate arcs during the random on / off process, which will damage the switch contacts, damage the equipment, affect the normal use of the circuit, and even cause fire accidents, etc.; while non-contact switches, such as thyristors and triodes, do not generate arcs during use, but their ability to withstand voltage and current impacts is relatively poor, so their load-carrying capacity is also relatively poor.

[0027] 2. The existing main and auxiliary arc extinguishing technical solutions have unique advantages due to their simplicity, practicality, economy, and high cost performance. However, the existing main and auxiliary switch arc extinguishing solutions also have the following defects:

[0028] (1) Since non-contact switches such as thyristors and triodes always have a response speed problem during the trigger-conduction process, and non-contact switches with good response speed are relatively expensive and have a relatively poor cost performance;

[0029] (2) Their assembly volume is relatively large;

[0030] (3) Their manufacturing process is relatively complex;

[0031] 3. The arc extinguishing switch K of the resistance value transition type in the present utility model retains all the advantages of the existing mechanical switch, overcomes all the disadvantages of the existing contactless switch and the main and auxiliary switches, fundamentally solves all the problems of arc generation in the switch, has low cost, simple manufacturing process, good arc extinguishing effect, excellent performance, and high cost performance, and creates a new starting point for switch arc extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is the circuit schematic diagram of Embodiment 1 and Embodiment 2 of the present utility model.

[0033] Figure 2 It is the circuit schematic diagram of Embodiment 3 of the present utility model.

[0034] Figure 3 It is the circuit schematic diagram of Embodiment 4 of the present utility model.

[0035] Figure 4 It is the basic circuit schematic diagram of Embodiment 5 and Embodiment 6 of the present utility model.

[0036] Figure 5 It is the circuit schematic diagram of Embodiment 5 of the present utility model.

[0037] Figure 6 It is the circuit schematic diagram of Embodiment 6 of the present utility model.

[0038] Figure 7 It is the cross-sectional schematic diagram of the knife-switch type and socket type arc extinguishing switch K of the resistance value transition type of the present utility model.

[0039] Figure 8 It is the cross-sectional schematic diagram of the knife-switch type and socket type arc extinguishing switch K of the resistance value transition type of the present utility model.

[0040] Figure 9 It is the cross-sectional schematic diagram of the knife-switch type and socket type arc extinguishing switch K of the resistance value transition type of the present utility model.

[0041] Figure 10 It is the cross-sectional schematic diagram of the button type and relay contact type arc extinguishing switch K of the resistance value transition type of the present utility model.

[0042] Figure 11 It is the on-load circuit schematic diagram of Embodiment 1 of the present utility model.

[0043] Figure 12 It is the on-load circuit schematic diagram of Embodiment 2 of the present utility model.

[0044] Figure 13 It is the on-load circuit schematic diagram of Embodiment 3 of the present utility model.

[0045] Figure 14 It is the on-load circuit schematic diagram of Embodiment 4 of the present utility model.

[0046] Figure 15 It is the schematic diagram of the load-carrying circuit in Embodiment 5 of the present utility model.

[0047] Figure 16 It is the schematic diagram of the load-carrying circuit in Embodiment 6 of the present utility model.

[0048] The codes and names of the components in the above figures:

[0049] P1, the first electrode; P2, the second electrode; K, the arc extinguishing switch with resistance transition; B, the non-contact switch; K1, the main switch; Kf, the auxiliary switch; R, the transition resistance; R1, the shunt resistance; R2, the step-by-step transition resistance; R3, the step-by-step transition resistance; C, the trigger capacitor; SCR, the bidirectional thyristor; T, the triode; Kf5, the moving contact of the auxiliary switch; K16, the moving contact of the main switch; ΔS, the difference in electrical clearance; Ir, the arc starting current limit; P, the external force; 1, the switch plug; 2, the high-resistance conductor material A; 3, the conductor material; 4, the high-resistance conductor material B; 5, the conductive elastic sheet A; 6, the conductive elastic sheet B; 7, the insulating material C; 8, the fixed contact seat; 9Kf, the fixed contact of the auxiliary switch; 9K1, the fixed contact of the main switch; 10, the insulating riveting material; 11, the socket; YD, the motor. Specific embodiments

[0050] The present utility model will be further described in detail below in conjunction with the drawings and embodiments:

[0051] Embodiment 1: Connect the arc extinguishing switch K and the 1kW single-phase AC motor YD together according to Figure 1 、 Figure 7 、 Figure 8 、 Figure 11 requirements, and then connect to the AC 220V 50HZ power supply;

[0052] Figure 1 、 Figure 7 , Figure 8, A resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a main switch K1, a transition resistor R, a plug 1, and a socket 11, thus constituting a resistance-transition type arc extinguishing switch K; (1) The resistance-transition type arc extinguishing switch K is a socket-type switch and a knife-switch; (2) The resistance-transition type arc extinguishing switch K has a transition resistor R and a main switch K1 respectively arranged on the upper and lower parts of the socket 11 of the socket-type switch and the knife-switch; The transition resistor R uses a high-resistance conductor material A2 with poor conductivity, and the main switch K1 uses a conductor material 3 with good conductivity; The transition resistor R and the main switch K1 are integrally connected to form a resistance-transition type arc extinguishing switch K; The resistance-transition type arc extinguishing switch K adopts 2 structures and 4 process composition methods: a. The transition resistor R uses a material with variable resistance, such as the high-resistance conductor material A2 mentioned above; The transition resistor R and the main switch K1 are integrally connected by welding, fusion welding (please refer to Figure 7 ), film pasting, and coating (please refer to Figure 8 ); b. When the transition resistor R and the main switch K1 are insulated from each other, the transition resistor R and the main switch K1 are connected by a resistor with an unchangeable resistance, such as a relatively high-resistance resistor that restricts arcing, and the relatively high-resistance resistor is a resistor that can generate a current Ir that restricts arcing in the circuit; (3) The main switch K1 includes the transition resistor R; The main switch K1 is connected in series between the electrode P1 and the electrode P2; (4) The resistance-transition type arc extinguishing switch K has the following self-structure functions: When the resistance-transition type arc extinguishing switch K is randomly closed, the transition resistor R first enters a state of high-resistance conduction, and then its resistance transitions from a high resistance to a low resistance until it approaches the electrical contact resistance conduction of the main switch K1 with a resistance of 0; When the resistance-transition type arc extinguishing switch K is randomly disconnected, the resistance of the transition resistor R transitions from approaching 0 resistance to a high resistance until the resistance-transition type arc extinguishing switch K is disconnected; (5) The electrical contact internal resistance of the main switch K1 approaches 0, and the resistance of the transition resistor R is greater than the electrical contact internal resistance of the main switch K1; (6) Reasonably set the resistance of the transition resistor R so that when the resistance-transition type arc extinguishing switch K is in a high-resistance state, the current passing through the main switch K1 is a weak current that restricts arcing; The weak current that restricts arcing can restrict arcing during the random on and off processes of the main switch K1; (7) According to the structural characteristics of the resistance-transition type arc extinguishing switch K and relevant standard regulations, set the electrical clearance difference ΔS between the transition resistor R and the main switch K1, that is, the distance from the main switch K1 to the contact point of the transition resistor R at the top of the socket 11 is 2.5 mm (please refer to Figure 7 , Figure 8 ), which is greater than the standard-specified 2 mm, so that it can be ensured that the main switch K1 will not accidentally arc before the transition resistor R conducts and after it disconnects; (8) The resistance-transition type arc extinguishing switch K includes at least 1 transition resistor R;

[0053] The arc suppression method of the resistance-transition type arc suppression switch K is as follows:

[0054] Step 1: Make the electrical contact internal resistance of the main switch K1 approach zero; make the resistance value of the transition resistor R greater than the electrical contact internal resistance of the main switch K1;

[0055] Step 2: Confirm that the resistance-transition type arc suppression switch K has the following logical functions: during the random closing process of the resistance-transition type arc suppression switch K, the main switch K1 first enters the conduction state with the arc starting current Ir restricted by the transition resistor R, and then transitions to the conduction state with a stronger current of the main switch K1; during the random opening process of the resistance-transition type arc suppression switch K, first, the conduction state with a stronger current of the main switch K1 transitions to the conduction state with the arc starting current Ir restricted by the transition resistor R. At this time, the current passing through the main switch K1 is the arc starting current Ir restricted until the resistance-transition type arc suppression switch K is disconnected;

[0056] Step 3: Reasonably select the resistance value of the transition resistor R, and confirm that during the random on and off processes of the resistance-transition type arc suppression switch K, the current passing through the main switch K1 when it is in the higher resistance state is the weak current that restricts arc starting;

[0057] Step 4: Confirm that at the moment when the resistance-transition type switch K closes, the conduction state of the weak current that restricts arc starting passing through the main switch K1 transitions to the conduction state of a stronger current. At the moment when the resistance-transition type arc suppression switch K disconnects, the main switch K1 transitions from the conduction state of a stronger current to the conduction state of the weak current that restricts arc starting. Until the resistance-transition type arc suppression switch K is turned off, it is always in the conduction state of the weak current that restricts arc starting, eliminating the arc starting condition of the resistance-transition type arc suppression switch K;

[0058] Step 5: According to the structural characteristics of the resistance-transition type arc suppression switch K and relevant standard regulations, confirm the electrical clearance difference ΔS between the transition resistor R and the main switch K1, that is, the distance from the main switch K1 to the contact point at the entrance of the transition resistor R at the top of the socket 11 is 2.5 mm (please refer to Figure 7 、 Figure 8 ), which is greater than the standard-specified 2 mm. In this way, it can be ensured that the main switch K1 will not accidentally arc before the transition resistor R conducts and after it disconnects;

[0059] When an external force randomly applies pressure to the plug 1 along the P direction, it forces the resistance-transition type arc extinguishing switch K to perform random on-off operations, thereby controlling the on-off of the single-phase AC motor YD; when the resistance-transition type arc extinguishing switch K randomly closes: the main switch K1 is first in a state of relatively high resistance, and the current passing through it is a weak current that restricts arcing. Subsequently, the plug 1 continues to penetrate deeper into the lower part of the socket 11, and the contact volume with the transition resistor R becomes smaller and smaller. The resistance value of the transition resistor R also changes from large to small until it completely transitions to the electrical contact internal resistance of the main switch K1. At this time, the resistance value of the main switch K1 has transitioned from the original relatively high resistance state to a state approaching 0 resistance value, and the main switch K1 is turned on, and the weak current that restricts arcing automatically disappears; conversely, when disconnecting: the plug 1 is pulled upward, and the electrical contact internal resistance of the main switch K1 transitions to contact with the transition resistor R. As the contact volume with the transition resistor R becomes larger and larger, the resistance value of the transition resistor R also changes from small to large until the electrical contact internal resistance of the main switch K1 is completely separated and transitions to contact with the transition resistor R. At this time, the resistance value of the transition resistor R has transitioned from the original 0 resistance value state to a relatively high resistance value state until the resistance-transition type arc extinguishing switch K is completely disconnected; thus, it can be seen that the resistance-transition type arc extinguishing switch K is in a state of relatively high resistance value both when closing and when disconnecting, and the current passing through it is a weak current that restricts arcing, eliminating the basic conditions for the arc extinguishing switch K to arc; in addition, during the conduction period of the main switch K1, the voltage between the electrodes P1 and P2 is 0, and the current in the transition resistor R branch is in a cut-off state, so it will not heat up.

[0060] Example 2: According to Figure 1 、 Figure 7 、 Figure 8 、 Figure 12 requirements, connect the arc extinguishing switch K and the 1kW DC motor YD together, and then connect them to a DC 63V regulated power supply or battery;

[0061] Figure 1 、 Figure 7 , Figure 8,, A resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a main switch K1, a transition resistor R, a plug 1, and a socket 11, thus constituting a resistance-transition type arc extinguishing switch K; (1) The resistance-transition type arc extinguishing switch K is a socket type switch and a knife switch; (2) The resistance-transition type arc extinguishing switch K has a transition resistor R and a main switch K1 respectively arranged on the upper and lower parts of the socket 11 of the socket type switch and the knife switch; the transition resistor R uses a high-resistance conductor material A2 with poor conductivity, and the main switch K1 uses a conductor material 3 with good conductivity; the transition resistor R and the main switch K1 are integrally connected to form the resistance-transition type arc extinguishing switch K; the resistance-transition type arc extinguishing switch K adopts 2 structures and 4 process composition methods: a. The transition resistor R uses a material with variable resistance, such as the high-resistance conductor material A2; the transition resistor R and the main switch K1 are integrally connected by welding, fusion welding (please refer to Figure 7 ), film pasting, coating (please refer to Figure 8 ); b. When the transition resistor R and the main switch K1 are insulated from each other, the transition resistor R and the main switch K1 are connected by a resistor with a fixed resistance, such as a higher-resistance resistor that restricts arcing, and the higher-resistance resistor is a resistor that can generate a current Ir that restricts arcing in the circuit; (3) The main switch K1 is connected in series between the electrode P1 and the electrode P2; (4) The resistance-transition type arc extinguishing switch K has the following self-structural functions: when the resistance-transition type arc extinguishing switch K is randomly closed, the main switch K1 first enters a higher-resistance conduction state, and then its resistance transitions from a higher resistance to a lower resistance until it approaches a resistance of 0, and the electrical contact internal resistance of the main switch K1 conducts; when the resistance-transition type arc extinguishing switch K is randomly opened, its resistance transitions from a lower resistance to a higher resistance until the resistance-transition type arc extinguishing switch K is opened; (5) The electrical contact internal resistance of the main switch K1 approaches zero, and the resistance of the transition resistor R is greater than the electrical contact internal resistance of the main switch K1; (6) The resistance of the transition resistor R is reasonably set so that when the main switch K1 is in a higher-resistance state, the current passing through the main switch K1 is a weak current that restricts arcing; (7) According to the structural characteristics of the resistance-transition type arc extinguishing switch K and relevant standard regulations, the electrical clearance difference ΔS between the transition resistor R and the main switch K1 is set, that is, the distance from the main switch K1 to the contact point of the transition resistor R at the top of the socket 11 is 2.5 mm (please refer to Figure 7 , Figure 8 ), which is greater than the standard-specified 0.8 mm, so that it can be ensured that the main switch K1 will not accidentally arc before and after the transition resistor R conducts; (8) The arc extinguishing switch K includes at least 1 transition resistor R;

[0062] The arc extinguishing method of the resistance-transition type arc extinguishing switch K is as follows:

[0063] Step 1: Make the internal resistance of the electrical contact of the main switch K1 approach zero; make the resistance value of the transition resistor R greater than the internal resistance of the electrical contact of the main switch K1;

[0064] Step 2: Confirm that the resistance-transition type arc extinguishing switch K has the following logical functions: during the random closing process of the resistance-transition type arc extinguishing switch K, the main switch K1 first enters a high-resistance conduction state, and then its resistance value changes from a high resistance value to a low resistance value until it approaches 0 ohm; during the random opening process of the resistance-transition type arc extinguishing switch K, the resistance value of the transition resistor R changes from approaching 0 ohm to a high resistance value until the resistance-transition type arc extinguishing switch K is opened;

[0065] Step 2: Reasonably select the resistance value of the transition resistor R, and confirm that when the resistance-transition type arc extinguishing switch K is randomly turned on and off, the current passing through the transition resistor R when it is in a high-resistance state is a weak current that limits arcing;

[0066] Step 3: Confirm that when the resistance-transition type arc extinguishing switch K is closed, the conduction state of the weak current that limits arcing passing through the main switch K1 is transitioned to a stronger current conduction state; when the resistance-transition type arc extinguishing switch K is opened, the main switch K1 is transitioned from a strong current conduction state to a weak current conduction state that limits arcing, and until the resistance-transition type arc extinguishing switch K is turned off, it always remains in a weak current conduction state that limits arcing, eliminating the arcing condition of the resistance-transition type arc extinguishing switch K;

[0067] Step 4: According to the structural characteristics of the resistance-transition type arc extinguishing switch K and relevant standard regulations, confirm the electrical clearance difference ΔS between the transition resistor R and the main switch K1, that is, the distance from the main switch K1 to the contact point of the entrance of the transition resistor R at the top of the socket 11 is 2.5 mm (please refer to Figure 7 、 Figure 8 ), which is greater than the standard-specified 0.8 mm, so as to fully ensure that the main switch K1 will not accidentally arc before the transition resistor R conducts and after it is disconnected;

[0068] When an external force randomly applies pressure to the plug 1 along the P direction, it forces the resistance-transition type arc extinguishing switch K to perform random on-off operations, thereby controlling the on-off of the single-phase AC motor YD; when the resistance-transition type arc extinguishing switch K randomly closes: the resistance-transition type arc extinguishing switch K is first in a high-resistance state, and the current passing through it is a weak current that limits arcing. Subsequently, the plug 1 continues to penetrate deeper into the lower part of the socket 11, and the contact volume with the transition resistor R becomes smaller and smaller. The resistance value of the transition resistor R also changes from large to small until it completely transitions to contact with the internal resistance of the main switch K1. At this time, the resistance value of the main switch K1 has transitioned from the original high-resistance state to a state approaching 0 resistance value, and the internal resistance of the electrical contact of the main switch K1 is connected, and the weak current that limits arcing automatically disappears; conversely, when disconnecting: the plug 1 is pulled upward, and the internal resistance of the electrical contact of the main switch K1 is first disconnected and transitions to contact with the transition resistor R. As the contact volume with the transition resistor R becomes larger and larger, the resistance value of the transition resistor R also changes from small to large until it is completely in contact with the transition resistor R. At this time, the resistance value of the main switch has gradually changed from the original 0 resistance value state to a high-resistance state until the resistance-transition type arc extinguishing switch K is completely disconnected; thus, it can be seen that the arc extinguishing switch K is in a high-resistance state both when closing and when disconnecting, and the current passing through it is a weak current that limits arcing, eliminating the basic conditions for the arc extinguishing switch K to arc; in addition, during the conduction period of the main switch K1, the voltage between the electrodes P1 and P2 is 0, and the current in the transition resistor R branch is in a cut-off state, so it will not heat up.

[0069] Embodiment 3: According to Figure 2 , Figure 9 , Figure 13 requirements, connect the arc extinguishing switch K and the 1kW single-phase AC motor YD together, and then connect to the AC 220V 50HZ power supply;

[0070] Figure 2 , Figure 9, A resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a main switch K1, a transition resistor R, a plug 1, and a socket 11, thus constituting a resistance-transition type arc extinguishing switch K; (1) The resistance-transition type arc extinguishing switch K is a socket type switch or a knife switch; (2) The transition resistor R includes a stepped transition resistor R2 and a stepped transition resistor R3; (3) The resistance-transition type arc extinguishing switch K is provided with a stepped transition resistor R2, a stepped transition resistor R3, and a main switch K1 on the upper and lower parts of the socket 11 of the socket type switch and the knife switch respectively; The stepped transition resistor R2 is made of a high-resistance conductor material A2 with the worst conductivity, the stepped transition resistor R3 is made of a high-resistance conductor material B4 with relatively poor conductivity, and the main switch K1 is made of a conductor material 3 with better conductivity; The stepped transition resistor R2, the stepped transition resistor R3, and the main switch K1 are integrally connected to form a resistance-transition type arc extinguishing switch K; The resistance-transition type arc extinguishing switch K adopts 2 structures and 5 process composition methods: a. The stepped transition resistors R2 and R3 adopt materials with variable resistance values, such as the high-resistance conductor material A2 and the high-resistance conductor material B4; The stepped transition resistors R2, R3, and the main switch K1 are integrally connected by welding, fusion welding, film pasting, and coating (please refer to Figure 9 ); In addition, there is another process structure form, the inner side surface of the socket 11 is trapezoidal (please refer to Figure 9); b. When the grading transition resistors R2 and R3 and the main switch K1 are insulated from each other, the grading transition resistors R2 and R3 and the main switch K1 are connected with non-variable resistors, such as higher-value resistors. The higher-value resistors are resistors that can generate a current-limiting arc-starting current Ir in the circuit; (4) The grading transition resistors R2 and R3 and the main switch K1 are connected in series between the electrode P1 and the electrode P2; (5) The resistance-transition type arc-extinguishing switch K has the following self-structural functions: When the grading transition resistor R2 is randomly closed instantaneously in the resistance-transition type arc-extinguishing switch K, it first enters the higher-resistance conduction state of the grading transition resistor R2, and then its resistance transitions from the higher resistance to the lower-resistance conduction state of the grading transition resistor R3, and finally transitions to the conduction state where the electrical contact internal resistance of the main switch K1 approaches 0 resistance; When the resistance-transition type arc-extinguishing switch K is randomly opened instantaneously, the electrical contact internal resistance of the main switch K1 transitions from the conduction state where it approaches 0 resistance to the conduction state of the higher-resistance R3, and then transitions to the conduction state of the even higher-resistance R2 until the resistance-transition type arc-extinguishing switch K is opened; (6) Set the electrical contact internal resistance of the main switch K1 to approach zero, the resistance of the grading transition resistor R2 is greater than the resistance of the grading transition resistor R3, and the resistance of the grading transition resistor R3 is greater than the electrical contact internal resistance of the main switch K1; (7) Reasonably set the resistances of the grading transition resistors R2 and R3 so that when the resistance-transition type arc-extinguishing switch K is in the higher-resistance state, the current passing through the transition resistor R is a weak current that limits arc starting; (8) According to the structural characteristics of the resistance-transition type arc-extinguishing switch K and relevant standard regulations, set the electrical clearance difference ΔS between the transition resistor R and the main switch K1, that is, the distance from the main switch K1 to the contact point of the entrance of the transition resistor R at the top of the socket 11 is 2.5 mm (please refer to Figure 9 ), which is greater than the standard-specified 2 mm. In this way, it can be fully ensured that the main switch K1 will not accidentally arc before the transition resistor R conducts and after it disconnects; (9) The resistance-transition type arc-extinguishing switch K includes at least 1 transition resistor R;

[0071] The arc-extinguishing method of the resistance-transition type arc-extinguishing switch K is as follows:

[0072] Step 1: Make the electrical contact internal resistance of the main switch K1 approach zero; make the resistance of the transition resistor R greater than the electrical contact internal resistance of the main switch K1;

[0073] Step 2: Confirm that the resistance-transition type arc-extinguishing switch K has the following logical functions: During the random closing process of the resistance-transition type arc-extinguishing switch K, the main switch K1 first enters the higher-resistance conduction state of the transition resistor R, and then its resistance transitions from the higher resistance to the lower resistance until it approaches the conduction state of the electrical contact internal resistance of the main switch K1 with 0 resistance; During the random opening process of the resistance-transition type arc-extinguishing switch K, the resistance of the main switch K1 transitions from the resistance approaching 0 to the higher resistance until the resistance-transition type arc-extinguishing switch K is opened;

[0074] Step 3: Reasonably select the resistance value of the transition resistor R, and confirm that when the resistance-transition type arc suppression switch K randomly turns on and off, the current passing through the transition resistor R when it is in a high-resistance state is a weak current that restricts arcing.

[0075] Step 4: Confirm that when the resistance-transition type arc suppression switch K closes instantaneously, the conduction state of the weak current that restricts arcing passing through the main switch K1 transitions to a stronger current conduction state. When the resistance-transition type arc suppression switch K disconnects instantaneously, the main switch K1 transitions from a stronger current conduction state to a weak current conduction state that restricts arcing until the resistance-transition type arc suppression switch K is turned off.

[0076] Step 5: According to the structural characteristics of the resistance-transition type arc suppression switch K and relevant standard regulations, confirm the electrical clearance difference ΔS between the transition resistor R and the main switch K1, that is, the distance from the main switch K1 to the contact point of the entrance of the transition resistor R at the top of the socket 11 is 2.5 mm (please refer to Figure 9 ), which is greater than the standard-specified 2 mm. In this way, it can be fully ensured that before and after the transition resistor R conducts and disconnects, the main switch K1 will not accidentally arc.

[0077] When an external force randomly applies pressure to the plug 1 along the P direction, it forces the resistance-transition type arc suppression switch K to perform random on and off operations, thereby controlling the on and off of the single-phase AC motor YD; when the resistance-transition type arc suppression switch K randomly closes instantaneously: the resistance-transition type arc suppression switch K is first in a high-resistance state, and the current passing through it is a weak current that restricts arcing. Subsequently, the plug 1 continues to penetrate deeper into the lower part of the socket 11, and the contact volume with the transition resistor R becomes smaller and smaller. The resistance value of the transition resistor R also changes from large to small until it completely transitions to electrical contact with the internal resistance of the main switch K1. At this time, the resistance value of the main switch K1 has changed from the original high-resistance state to a zero-resistance state, and the main switch K1 is turned on, and the weak current that restricts arcing automatically disappears; conversely, when disconnecting instantaneously: the plug 1 is pulled upward, and the electrical contact internal resistance of the main switch K1 transitions to contact with the transition resistor R. As the contact volume with the transition resistor R becomes larger and larger, the resistance value of the transition resistor R also changes from small to large until the electrical contact internal resistance of the main switch K1 completely disengages and transitions to contact with the transition resistor R. At this time, the resistance value of the transition resistor R has changed from the original 0-resistance state to a high-resistance state until the resistance-transition type arc suppression switch K is completely turned off; thus, it can be seen that the arc suppression switch K is in a high-resistance state whether it is closing instantaneously or disconnecting instantaneously, and the current passing through it is a weak current that restricts arcing, eliminating the basic conditions for the arc suppression switch K to arc; in addition, during the conduction of the main switch K1, the voltage between the electrodes P1 and P2 is 0, and the current in the transition resistor R branch is in a cut-off state, so it will not heat up.

[0078] Example 4: According toFigure 3 , Figure 10 , Figure 14 It is required to connect the arc suppression switch K and the 1kW single-phase AC motor YD together, and then connect them to the AC 220V 50HZ power supply;

[0079] Figure 3 , Figure 10 , a resistance-transition type arc suppression structure, including the first electrode P1, the second electrode P2, the main switch K1, the transition resistor R, the auxiliary switch Kf, the conductive elastic sheet A5, the conductive elastic sheet B6, the insulating material C7, the fixed contact seat 8, the auxiliary switch fixed contact 9Kf, the main switch fixed contact 9K1, the auxiliary switch movable contact Kf5, the main switch movable contact K16, and the insulating riveting material 10, thus forming a resistance-transition type arc suppression switch K; (1) The resistance-transition type arc suppression switch K is a push-button switch, a relay, or an AC contactor type contact switch; (2) The transition resistor R includes the auxiliary switch Kf; (3) The resistance-transition type arc suppression switch K is provided with an auxiliary switch fixed contact 9Kf and a main switch fixed contact 9K1 on the fixed contact seat 8, corresponding to the two movable contacts K16 and Kf5 of the main switch K1 and the auxiliary switch Kf respectively (please refer to Figure 10-1 , Figure 10-2 ); The auxiliary switch Kf includes the auxiliary switch fixed contact 9Kf, the auxiliary switch movable contact Kf5, and the conductive elastic sheet A5, and the main switch K1 includes the main switch fixed contact 9K1, the movable contact K16, and the conductive elastic sheet B6; among them, the auxiliary switch movable contact Kf5 is arranged on the conductive elastic sheet A5 of the auxiliary switch Kf, and the main switch movable contact K16 is arranged on the conductive elastic sheet B6 of the main switch K1; The auxiliary switch Kf has the following 3 manufacturing methods and 2 process schemes: a. The manufacturing material of the auxiliary switch fixed contact 9Kf adopts the high-resistance conductor material A2, and the auxiliary switch fixed contact 9Kf has the process scheme of entirely adopting the high-resistance conductor material A2 and the process scheme of the coating layer adopting the high-resistance conductor material A2 after implementing the contact coating process; The manufacturing materials of the auxiliary switch movable contact Kf5, the main switch fixed contact 9K1, the movable contact K16, the fixed contact seat 8, the conductive elastic sheet A5, and the conductive elastic sheet B6 all adopt the conductor material 3 with good conductivity; They are integrally connected by welding or riveting process (please refer to Figure 10-1 ); b. The manufacturing material of the auxiliary switch movable contact Kf5 adopts the high-resistance conductor material A2, and the auxiliary switch movable contact Kf5 has the process scheme of entirely adopting the high-resistance conductor material A2 and the process scheme of the coating layer adopting the high-resistance conductor material A2 after implementing the contact coating process; The manufacturing materials of the auxiliary switch fixed contact 9Kf, the main switch fixed contact 9K1, the movable contact K16, the fixed contact seat 8, the conductive elastic sheet A5, and the conductive elastic sheet B6 all adopt the conductor material 3 with good conductivity; They are integrally connected by welding or riveting process (please refer to Figure 10-1); c. The manufacturing materials of the auxiliary switch fixed contact 9Kf and the moving contact Kf5 are both made of high-resistance conductor material A2, and there are two process schemes: one is that the auxiliary switch fixed contact 9Kf and the moving contact Kf5 are integrally made of high-resistance conductor material A2, and the other is that the coating layer after the contact coating process is made of high-resistance conductor material A2; the manufacturing materials of the main switch fixed contact 9K1, the moving contact K16, the fixed contact seat 8, the conductive elastic sheet A5, and the conductive elastic sheet B6 are all made of conductor material 3 with good conductivity; they are integrally connected by welding or riveting process (please refer to Figure 10-1 ); The resistance-transition type arc extinguishing switch K also has another manufacturing process (please refer to Figure 10-2 ), that is, the main switch fixed contact 9K1, the moving contact K16, the conductive sheet B6, the auxiliary switch fixed contact 9Kf, the moving contact Kf5, and the conductive sheet A5 are all made of conductor material 3 with relatively high conductivity. The conductive sheet A5 and the conductive sheet B6 are separated by the insulating material C7, and then integrally connected by the insulating rivet material 10 (please refer to Figure 10-2), finally, between the conductive elastic sheet A5 and the conductive elastic sheet B6, a non-variable high-resistance resistor is used for connection, and the high-resistance resistor is a resistor that can generate a restricted arc-starting current Ir in the circuit; (4) There is a structural logic relationship between the main switch K1 and the auxiliary switch Kf: when the resistance-transition type arc extinguishing switch K randomly closes, the auxiliary switch Kf and the transition resistor R first conduct, and then transition to the conduction of the electrical contact internal resistance of the main switch K1; when disconnecting, it transitions from the conduction state of the electrical contact internal resistance of the main switch K1 to the conduction state of the auxiliary switch Kf and the transition resistor R; (5) The electrical contact internal resistance of the main switch K1 approaches zero, and the resistance value of the transition resistor R is greater than the electrical contact internal resistance of the main switch K1; (6) The transition resistor R and the auxiliary switch Kf are connected in series, and then are jointly connected in parallel between the electrodes P1 and P2; (7) The connection method of the electrodes P1 and P2: if it is a single-contact button-type switch, the electrodes P1 and P2 are respectively connected to the fixed contact seat 8 and the conductive elastic sheet B6; if it is a relay or AC contactor type double-contact switch, they are respectively connected to two mutually insulated fixed contact seats 8 corresponding to the two moving contacts K16 of the main switch; (8) The resistance-transition type arc extinguishing switch K has the following structural functions: when the resistance-transition type arc extinguishing switch K randomly closes instantaneously, the main switch K1 first enters a high-resistance conduction state, and then its resistance value transitions from a high resistance value to a low resistance value until it approaches a resistance value of 0, and the electrical contact internal resistance of the main switch K1 conducts; when the resistance-transition type arc extinguishing switch K randomly disconnects instantaneously, the internal resistance of the main switch K1 transitions from a resistance value approaching 0 to a high resistance value until the resistance-transition type arc extinguishing switch K disconnects; the high-resistance resistor is a resistor that can generate a restricted arc-starting current Ir in the circuit; (9) Reasonably set the resistance value of the transition resistor R so that when the resistance-transition type arc extinguishing switch K is in a high-resistance state, the current passing through the transition resistor R is a weak current that restricts arcing; in the arc extinguishing method, this weak current can be regarded as a branch current different from the conduction current of the main switch K1; (10) According to the structural characteristics of the resistance-transition type arc extinguishing switch K and according to relevant standard regulations, set the electrical clearance of the main switch K1 to 3.2 mm, the electrical clearance of the auxiliary switch Kf to 0.6 mm, and ΔS to 2.6 mm (please refer to Figure 10-1 、 Figure 10-2 ), which is greater than the standard-specified 2 mm, so that it can fully ensure that the main switch K1 will not accidentally arc before the auxiliary switch Kf conducts and after it disconnects; (11) The resistance-transition type arc extinguishing switch K includes at least 1 transition resistor R;

[0080] The arc extinguishing method of the resistance-transition type arc extinguishing switch K is as follows:

[0081] Step 1: Make the electrical contact internal resistance of the main switch K1 approach zero; make the resistance value of the transition resistor R greater than the electrical contact internal resistance of the main switch K1;

[0082] Step 2: Confirm that the resistance-transition type arc-extinguishing switch K has the following logic functions: During the random closing process of the resistance-transition type arc-extinguishing switch K, the main switch K1 first enters a conduction state with a relatively high resistance, and then its resistance transitions from a relatively high value to a relatively low value until it approaches 0 ohm and the electrical contact internal resistance of the main switch K1 is conducted; During the random opening process of the resistance-transition type arc-extinguishing switch K, the resistance of the main switch K1 transitions from a value approaching 0 ohm to a relatively high value until the resistance-transition type arc-extinguishing switch K is opened;

[0083] Step 2: Reasonably select the resistance value of the transition resistor R, and confirm that when the resistance-transition type arc-extinguishing switch K is randomly turned on and off, the current passing through the transition resistor R when it is in a state with a relatively high resistance is a weak current that limits arcing.

[0084] Step 3: Confirm that when the resistance-transition type arc-extinguishing switch K is closed instantaneously, the conduction state of the weak current that limits arcing passing through the main switch K1 is transitioned to a conduction state of a stronger current, eliminating the arcing condition of the resistance-transition type arc-extinguishing switch K; When the resistance-transition type arc-extinguishing switch K is opened instantaneously, the main switch K1 is transitioned from a conduction state of a stronger current to a conduction state of a weak current that limits arcing until the resistance-transition type arc-extinguishing switch K is turned off; Eliminate the arcing condition of the resistance-transition type arc-extinguishing switch K;

[0085] Step 4: According to the structural logic characteristics of the resistance-transition type arc-extinguishing switch K and relevant standard regulations, set the electrical clearance of the main switch K1 to 3.2 mm, the electrical clearance of the auxiliary switch Kf to 0.6 mm, and ΔS to 2.6 mm (please refer to Figure 10-1 、 Figure 10-2 ), which is greater than the standard-specified 2 mm, so as to fully ensure that the main switch K1 will not accidentally arc before the auxiliary switch Kf is conducted and after it is disconnected;

[0086] When an external force randomly applies pressure to the conductive elastic sheet B6 of the main switch K1 and the conductive elastic sheet A5 of the auxiliary switch Kf along the P direction, it forces the resistance-transition type arc-extinguishing switch K to perform random on / off operations, thereby controlling the operation of the single-phase AC motor YD; During the on / off process of the resistance-transition type arc-extinguishing switch K, at the moment of closing: The movable contact Kf5 of the auxiliary switch first enters a conduction state of a weak current that limits arcing, and then transitions to a conduction state of a stronger current of the electrical contact internal resistance of the main switch K1; At the moment of opening: The main switch K1 instantaneously transitions from a conduction state of a stronger current of the electrical contact internal resistance to a conduction state of a weak current that limits arcing of the auxiliary switch Kf and the transition resistor R until the auxiliary switch Kf is disconnected and the resistance-transition type arc-extinguishing switch K is turned off; The arcing condition of the resistance-transition type arc-extinguishing switch K is eliminated; In addition, during the conduction of the main switch K1, the voltage between the electrodes P1 and P2 is 0, and the weak current in the transition resistor R branch is in a cut-off state, so it will not generate heat.

[0087] Example Five: According toFigure 4 , Figure 5 , Figure 10 , Figure 15 It is required to connect the arc suppression switch K and the 1kW single-phase AC motor YD together, and then connect them to the AC 220V 50HZ power supply;

[0088] Figure 4 , Figure 5 , Figure 10 , a resistance-transition type arc suppression structure, including a first electrode P1, a second electrode P2, a main switch K1, a transition resistor R, an auxiliary switch Kf, a shunt resistor R1, a bidirectional thyristor SCR, a conductive elastic sheet A5, a conductive elastic sheet B6, an insulating material C7, a fixed contact seat 8, an auxiliary switch fixed contact 9Kf, a moving contact Kf5, a main switch fixed contact 9K1, a moving contact K16, and an insulating riveting material 10, thus constituting a resistance-transition type arc suppression switch K; (1) The resistance-transition type arc suppression switch K is a push-button switch, a relay, or an AC contactor type contact switch; (2) The transition resistor R includes the auxiliary switch Kf, the shunt resistor R1, and the bidirectional thyristor SCR; (3) The resistance-transition type arc suppression switch K is provided with an auxiliary switch fixed contact 9Kf and a main switch fixed contact 9K1 on the fixed contact seat 8, corresponding to the two moving contacts K16 and Kf5 of the main switch K1 and the auxiliary switch Kf respectively (please refer to Figure 10-1 , Figure 10-2 ); The auxiliary switch Kf includes an auxiliary switch fixed contact 9Kf, a moving contact Kf5, and a conductive elastic sheet A5, and the main switch K1 includes a main switch fixed contact 9K1, a moving contact K16, and a conductive elastic sheet B6; among them, the auxiliary switch moving contact Kf5 is arranged on the conductive elastic sheet A5 of the auxiliary switch Kf, and the main switch moving contact K16 is arranged on the conductive elastic sheet B6 of the main switch K1; The auxiliary switch Kf has the following 3 manufacturing methods and 2 process schemes: a. The manufacturing material of the auxiliary switch fixed contact 9Kf adopts a high-resistance conductor material A2, and the auxiliary switch fixed contact 9Kf has a process scheme of entirely adopting the high-resistance conductor material A2 and a process scheme in which the coating layer after implementing the contact coating process adopts the high-resistance conductor material A2; The manufacturing materials of the auxiliary switch moving contact Kf5, the main switch fixed contact 9K1, the moving contact K16, the fixed contact seat 8, the conductive elastic sheet A5, and the conductive elastic sheet B6 all adopt a conductor material 3 with good conductivity; Connect them integrally by welding or riveting process (please refer to Figure 10-1);b. The manufacturing material of the auxiliary switch moving contact Kf5 is made of high-resistance conductor material A2, where there are two process schemes for the auxiliary switch moving contact Kf5: one is that the whole is made of high-resistance conductor material A2, and the other is that the coating layer after implementing the contact coating process is made of high-resistance conductor material A2; the manufacturing materials of the auxiliary switch fixed contact 9Kf, main switch fixed contact 9K1, moving contact K16, fixed contact seat 8, conductive spring sheet A5, and conductive spring sheet B6 are all made of conductor material 3 with good conductivity; they are integrally connected by welding or riveting process (please refer to Figure 10-1 );c. The manufacturing materials of the auxiliary switch fixed contact 9Kf and moving contact Kf5 are both made of high-resistance conductor material A2, where there are two process schemes for the auxiliary switch fixed contact 9Kf and moving contact Kf5: one is that the whole is made of high-resistance conductor material A2, and the other is that the coating layer after implementing the contact coating process is made of high-resistance conductor material A2; the manufacturing materials of the main switch fixed contact 9K1, moving contact K16, fixed contact seat 8, conductive spring sheet A5, and conductive spring sheet B6 are all made of conductor material 3 with good conductivity; they are integrally connected by welding or riveting process (please refer to Figure 10-1 );The resistance-transition type arc extinguishing switch K also has another manufacturing process (please refer to Figure 10-2 ), that is, the main switch fixed contact 9K1, moving contact K16, conductive sheet B6, auxiliary switch fixed contact 9Kf, moving contact Kf5, and conductive sheet A5 are all made of conductor material 3 with relatively high conductivity, the conductive sheet A5 and conductive sheet B6 are separated by insulating material C7, and then they are integrally connected by insulating rivet material 10 (please refer to Figure 10-2), finally, between the conductive elastic sheet A5 and the conductive elastic sheet B6, a non-changeable high-resistance resistor is used for connection. The high-resistance resistor is a resistor that can generate a restricted arcing current Ir in the circuit; (4) The transition resistor R includes an auxiliary switch Kf, a shunt resistor R1, and a bidirectional thyristor SCR; (5) The transition resistor R, the auxiliary switch Kf, and the shunt resistor R1 are connected in series, and then are commonly connected in parallel with the main switch K1 and the non-contact switch B between the electrodes P1 and P2; wherein the common connection point of the auxiliary switch Kf and the shunt resistor R1 is connected to the trigger electrode of the bidirectional thyristor SCR; (6) The electrical contact internal resistance of the main switch K1 is set to approach 0 ohms, the resistance value of the transition resistor R is set to be greater than the electrical contact internal resistance of the bidirectional thyristor SCR, and the electrical contact internal resistance of the bidirectional thyristor SCR is greater than the electrical contact internal resistance of the main switch K1; (7) The transition resistor R is a high-resistance resistor, and the high-resistance resistor is a resistor that can generate a restricted arcing current Ir in the circuit; the bidirectional thyristor SCR is a controllable non-arcing switch; (8) The transition resistor R has the following structural functions: reasonably setting the resistance value of the transition resistor R so that when the main switch K1 is in a random on / off process, the current passing through the resistance value transition type arc extinguishing switch K is the restricted arcing current Ir. The restricted arcing current Ir includes two branch currents: a. The restricted arcing weak current passing through the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1; b. The trigger current and conduction current passing through the bidirectional thyristor SCR; during the random closing process of the resistance value transition type arc extinguishing switch K, the auxiliary switch Kf, the transition resistor R, and the shunt resistor R1 first enter the conduction state of the restricted arcing weak current. After a response speed delay time difference, it transitions to the trigger conduction state of the bidirectional thyristor SCR, and finally the electrical contact internal resistance of the main switch K1 conducts; during the random opening process of the resistance value transition type arc extinguishing switch K, first, the main switch K1 transitions from the strong current conduction state to the conduction state of the restricted arcing weak current of the branch of the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1. Then, after a time difference of the response speed, it transitions to the conduction state of the bidirectional thyristor SCR. Finally, the auxiliary switch Kf is turned off, the current of the shunt resistor R1 branch is immediately cut off, and then the conduction current of the non-contact switch B passes through zero and is cut off, and the resistance value transition type arc extinguishing switch K is turned off; (9) Setting the resistance value of the transition resistor R has the following function: when the resistance value transition type arc extinguishing switch K is in the high-resistance conduction state, the current passing through the transition resistor R is the restricted arcing weak current; (10) According to the structural characteristics of the resistance value transition type arc extinguishing switch K and relevant standard regulations, the electrical clearance of the main switch K1 is set to 3.2 mm, the electrical clearance of the auxiliary switch Kf is set to 0.6 mm, and ΔS is 2.6 mm. (Please refer to Figure 10-1 , Figure 10-2), greater than the standard-specified 2 mm, which can fully ensure that the main switch K1 will not accidentally arc before and after the auxiliary switch Kf is turned on and off; (11) The resistance-transition type arc extinguishing switch K described above includes at least 1 transition resistor R;

[0089] The arc extinguishing method of the resistance-transition type arc extinguishing switch K is as follows:

[0090] Step 1: Make the electrical contact internal resistance of the main switch K1 approach zero; make the resistance value of the transition resistor R greater than the electrical contact internal resistance of the bidirectional thyristor SCR, and make the electrical contact internal resistance of the bidirectional thyristor SCR greater than the electrical contact internal resistance of the main switch K1; make the voltage drop across the shunt resistor R greater than the trigger voltage of the bidirectional thyristor SCR;

[0091] Step 2: Confirm that the resistance-transition type arc extinguishing switch K has the following logical functions: during the random closing process of the resistance-transition type arc extinguishing switch K, the main switch K1 first enters a high-resistance conduction state, and then its resistance value transitions from a high resistance value to a value approaching 0 until the electrical contact internal resistance of the main switch K1 conducts; during the random opening process of the resistance-transition type arc extinguishing switch K, the resistance value of the main switch K1 changes from a value approaching 0 to a high resistance value until the resistance-transition type arc extinguishing switch K is turned off;

[0092] Step 3: Reasonably select the resistance value of the transition resistor R, and confirm that when the resistance-transition type arc extinguishing switch K is randomly turned on and off, the current passing through the transition resistor R when it is in a high-resistance state is a weak current that limits arcing; the trigger current and conduction current passing through the bidirectional thyristor SCR are the arcing-limiting current Ir;

[0093] Step 4: Confirm that when the main switch K1 is closed instantaneously, the arcing-limiting current Ir passing through the main switch K1 is transitioned from a conduction state to a stronger current conduction state, eliminating the arcing condition of the resistance-transition type arc extinguishing switch K; when the main switch K1 is opened instantaneously, the main switch K1 is transitioned from a stronger current conduction state to an arcing-limiting current Ir conduction state until the resistance-transition type arc extinguishing switch K is turned off; eliminate the arcing condition of the resistance-transition type arc extinguishing switch K;

[0094] Step 5: According to the structural characteristics of the resistance-transition type arc extinguishing switch K described above and according to relevant standard regulations, set the electrical clearance of the main switch K1 to 3.2 mm, the electrical clearance of the auxiliary switch Kf to 0.6 mm, and ΔS to 2.6 mm (please refer to Figure 10-1 、 Figure 10-2 ), greater than the standard-specified 2 mm, which can fully ensure that the main switch K1 will not accidentally arc before and after the auxiliary switch Kf is turned on and off;

[0095] When an external force randomly applies pressure to the conductive elastic sheet B6 of the main switch K1 and the conductive elastic sheet A5 of the auxiliary switch Kf along the P direction, it forces the resistance-transition type arc extinguishing switch K to perform random on-off operations, thereby controlling the on-off of the single-phase AC motor YD; during the on-off process of the resistance-transition type arc extinguishing switch K: At the moment of closing: The auxiliary switch Kf, the transition resistor R, and the shunt resistor R1 first enter the weak-current conduction state that restricts arc ignition. After a response speed delay time difference, it transitions to the conduction state triggered by the bidirectional thyristor SCR; finally, it transitions to the conduction state of the electrical contact internal resistance of the main switch K1. At the moment of opening: The main switch K1 transitions from the strong-current conduction state to the weak-current conduction state that restricts arc ignition by the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1. After a response speed delay time difference, it transitions to the conduction state of the bidirectional thyristor SCR; finally, the auxiliary switch Kf opens, the branch current of the shunt resistor R1 is cut off, the conduction current of the bidirectional thyristor SCR passes through zero and is cut off, and the resistance-transition type arc extinguishing switch K is turned off, basically eliminating the arc ignition condition.

[0096] Example 6: According to Figure 4 , Figure 6 , Figure 10 , Figure 16 requirements, connect the arc extinguishing switch K and the 1kW DC motor YD together, and then connect them to a DC 63V regulated power supply or battery;

[0097] Figure 4 , Figure 6 , Figure 10 , a resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a main switch K1, a transition resistor R, an auxiliary switch Kf, a shunt resistor R1, a triode T, a conductive elastic sheet A5, a conductive elastic sheet B6, an insulating material C7, a fixed contact seat 8, a main switch fixed contact 9K1, a main switch movable contact K16, an auxiliary switch fixed contact 9Kf, an auxiliary switch movable contact Kf5, an insulating riveting material 10, thus constituting a resistance-transition type arc extinguishing switch K; (1) The resistance-transition type arc extinguishing switch K is a push-button switch, a relay, or an AC contactor type contact switch; (2) The transition resistor R includes the auxiliary switch Kf, the shunt resistor R1, and the triode T; (3) The resistance-transition type arc extinguishing switch K is provided with an auxiliary switch fixed contact 9Kf and a main switch fixed contact 9K1 on the fixed contact seat 8, corresponding to the two movable contacts K16 and Kf5 of the main switch K1 and the auxiliary switch Kf respectively (please refer to Figure 10-1 , Figure 10-2); The auxiliary switch Kf includes an auxiliary switch fixed contact 9Kf, a moving contact Kf5, and a conductive elastic sheet A5. The main switch K1 includes a main switch fixed contact 9K1, a moving contact K16, and a conductive elastic sheet B6. Among them, the auxiliary switch moving contact Kf5 is arranged on the conductive elastic sheet A5 of the auxiliary switch Kf, and the main switch moving contact K16 is arranged on the conductive elastic sheet B6 of the main switch K1. The auxiliary switch Kf has the following 3 manufacturing methods and 2 process schemes: a. The manufacturing material of the auxiliary switch fixed contact 9Kf adopts a high-resistance conductor material A2. Among them, the auxiliary switch fixed contact 9Kf has a process scheme of entirely adopting the high-resistance conductor material A2 and a process scheme where the coating layer after implementing the contact coating process adopts the high-resistance conductor material A2. The manufacturing materials of the auxiliary switch moving contact Kf5, the main switch fixed contact 9K1, the moving contact K16, the fixed contact seat 8, the conductive elastic sheet A5, and the conductive elastic sheet B6 all adopt a conductor material 3 with good conductivity; they are integrally connected by welding or riveting process (please refer to Figure 10-1 ); b. The manufacturing material of the auxiliary switch moving contact Kf5 adopts a high-resistance conductor material A2. Among them, the auxiliary switch moving contact Kf5 has a process scheme of entirely adopting the high-resistance conductor material A2 and a process scheme where the coating layer after implementing the contact coating process adopts the high-resistance conductor material A2. The manufacturing materials of the auxiliary switch fixed contact 9Kf, the main switch fixed contact 9K1, the moving contact K16, the fixed contact seat 8, the conductive elastic sheet A5, and the conductive elastic sheet B6 all adopt a conductor material 3 with good conductivity; they are integrally connected by welding or riveting process (please refer to Figure 10-1 ); c. The manufacturing materials of the auxiliary switch fixed contact 9Kf and the moving contact Kf5 both adopt a high-resistance conductor material A2. Among them, the auxiliary switch fixed contact 9Kf and the moving contact Kf5 have a process scheme of entirely adopting the high-resistance conductor material A2 and a process scheme where the coating layer after implementing the contact coating process adopts the high-resistance conductor material A2. The manufacturing materials of the main switch fixed contact 9K1, the moving contact K16, the fixed contact seat 8, the conductive elastic sheet A5, and the conductive elastic sheet B6 all adopt a conductor material 3 with good conductivity; they are integrally connected by welding or riveting process (please refer to Figure 10-1 ); The resistance-transition type arc extinguishing switch K also has another manufacturing process (please refer to Figure 10-2 ), that is, the main switch fixed contact 9K1, the moving contact K16, the conductive sheet B6, the auxiliary switch fixed contact 9Kf, the moving contact Kf5, and the conductive sheet A5 all adopt a conductor material 3 with relatively high conductivity. The conductive sheets A5 and B6 are separated by an insulating material C7, and then they are integrally connected by an insulating rivet material 10 (please refer to Figure 10-2), finally, between the conductive elastic sheet A5 and the conductive elastic sheet B6, a fixed resistor with an immutable relatively high resistance is used for connection; the immutable relatively high resistance fixed resistor is a resistor that can generate a restricted arcing current Ir in the circuit; (4) the transition resistor R includes an auxiliary switch Kf, a shunt resistor R1, a triode T; (5) the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1 are connected in series, and then are commonly connected between the electrodes P1 and P2 together with the main switch K1 and the triode T; among them, the common connection point of the auxiliary switch Kf and the shunt resistor R1 is connected to the trigger electrode of the bidirectional triode T; (6) the electrical contact internal resistance of the main switch K1 is set to approach 0 ohms, and the resistance value of the transition resistor R is set to be greater than the electrical contact internal resistance of the triode T, and the electrical contact internal resistance of the triode T is greater than the electrical contact internal resistance of the main switch K1; (7) the transition resistor R is a resistor with a relatively high resistance, and the relatively high resistance resistor is a resistor that can generate a restricted arcing current Ir in the circuit; the triode T is a controllable arc-free switch; (8) the transition resistor R has the following structural functions: reasonably setting the resistance value of the transition resistor R so that when the main switch K1 is in a random on and off process, the current passing through the main switch K1 is the restricted arcing current Ir, and the restricted arcing current Ir includes two branch currents: a. the restricted arcing weak current passing through the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1; b. the trigger current and conduction current passing through the triode T; during the random closing process of the resistance value transition type arc extinguishing switch K, the auxiliary switch Kf, the transition resistor R, and the shunt resistor R1 first enter the restricted arcing weak current conduction state, and after a response speed delay time difference, it transitions to the triode T conduction state, and finally the electrical contact internal resistance of the main switch K1 conducts; during the random opening process of the resistance value transition type arc extinguishing switch K, first, the main switch K1 transitions from the conduction state with an internal resistance approaching 0 ohms to the restricted arcing weak current conduction state of the transition resistor R, the auxiliary switch kf, and the shunt resistor R1, and after a time difference of the response speed, it transitions to the triode T conduction state; finally, the auxiliary switch Kf is turned off, and the branch current of the shunt resistor R1 and the conduction current of the triode T are immediately cut off, and the resistance value transition type arc extinguishing switch K is turned off; (9) setting the resistance value of the transition resistor R has the following function: when the resistance value transition type arc extinguishing switch K is in a relatively high resistance conduction state, the current passing through it is the restricted arcing current Ir that can limit the arcing of the main switch K1; (10) according to the structural characteristics of the resistance value transition type arc extinguishing switch K and according to relevant standard regulations, the electrical clearance of the main switch K1 is set to 3.2 mm, the electrical clearance of the auxiliary switch Kf is set to 0.6 mm, and ΔS is 2.6 mm, (please refer to Figure 10-1 , Figure 10-2 ), which is greater than the standard specified 2 mm, so that it can fully ensure that the main switch K1 will not accidentally arc before the auxiliary switch Kf conducts and after it is turned off; (11) the resistance value transition type arc extinguishing switch K includes at least 1 transition resistor R;

[0098] The arc extinguishing method of the resistance-transition type arc extinguishing switch K is as follows:

[0099] Step 1: Make the electrical contact internal resistance of the main switch K1 approach zero; make the resistance value of the transition resistor R greater than the electrical contact internal resistance of the triode T, and make the electrical contact internal resistance of the triode T greater than the electrical contact internal resistance of the main switch K1; make the voltage drop across the shunt resistor R1 greater than the trigger voltage of the triode T.

[0100] Step 2: Confirm that the resistance-transition type arc extinguishing switch K has the following logic functions: during the random closing process of the resistance-transition type arc extinguishing switch K, the main switch K1 first enters a high-resistance conduction state, and then its resistance value transitions from a high resistance value to a value approaching 0 until the electrical contact internal resistance of the main switch K1 conducts; during the random opening process of the resistance-transition type arc extinguishing switch K, the resistance value of the main switch K1 transitions from a value approaching 0 to a high resistance value until the resistance-transition type arc extinguishing switch K is opened.

[0101] Step 2: Reasonably select the resistance value of the transition resistor R, and confirm that during the random on and off processes of the resistance-transition type arc extinguishing switch K, the current passing through it when it is in the high-resistance state is the arc starting current limit Ir.

[0102] Step 3: According to the structural characteristics of the resistance-transition type arc extinguishing switch K and relevant standard regulations, set the electrical clearance of the main switch K1 to 3.2 mm, the electrical clearance of the auxiliary switch Kf to 0.6 mm, and ΔS to 2.6 mm (please refer to Figure 10-1 、 Figure 10-2 ), which is greater than the standard-specified 2 mm, so as to fully ensure that the main switch K1 will not accidentally arc before the auxiliary switch Kf conducts and after it disconnects.

[0103] When an external force randomly applies pressure to the conductive elastic sheet B6 of the main switch K1 and the conductive elastic sheet A5 of the auxiliary switch Kf along the P direction, it forces the resistance-transition type arc extinguishing switch K to perform random on and off operations, thereby controlling the on and off of the DC motor YD; during the on and off processes of the resistance-transition type arc extinguishing switch K, at the moment of closing: the auxiliary switch Kf, the transition resistor R, and the shunt resistor R1 first enter the weak current conduction state for arc starting limitation, and after a response speed delay time difference, it transitions to the conduction state of the triode T triggered; finally, it transitions to the conduction state of the electrical contact internal resistance of the main switch K1; at the moment of opening: the main switch K1 transitions from the strong current conduction state to the weak current conduction state of the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1 for arc starting limitation, and after a response speed delay time difference, it transitions to the conduction state of the triode T; finally, the auxiliary switch Kf disconnects, the current in the shunt resistor R1 branch and the conduction current of the triode T are cut off, and the resistance-transition type arc extinguishing switch K is turned off, basically eliminating the arc starting conditions.

Claims

1. A resistance-transition type arc extinguishing structure, including a first electrode P1, a second electrode P2, a transition resistor R, and a main switch K1, thus forming a resistance-transition type arc extinguishing switch K; characterized in that ; (1) The main switch K1 includes a transition resistor R; (2) The transition resistor R and the main switch K1 are connected in series between the electrode P1 and the electrode P2; (3) The electrical contact internal resistance of the main switch K1 is set to approach a resistance value of 0, and the resistance value of the transition resistor R is set to be greater than the electrical contact internal resistance of the main switch K1; the electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current operating state; (4) The transition resistor R has the following self-structural functions: The resistance value of the transition resistor R is reasonably set so that when the main switch K1 is in the random on / off process, the current passing through the main switch K1 is the arc starting current limiting Ir, and the arc starting current limiting Ir is the current that limits the arc starting at the moment of on / off of the main switch K1; (5) The main switch K1 has the following structural functions: During the random closing process of the resistance value transition type arc extinguishing switch K, the main switch K1 first enters the conduction state with a relatively high resistance value of the transition resistor R, and then its resistance value transitions from a relatively high resistance value to a resistance value approaching 0 until the electrical contact internal resistance of the main switch K1 conducts; during the random opening process of the resistance value transition type arc extinguishing switch K, the resistance value of the main switch K1 transitions from a resistance value approaching 0 to a relatively high resistance value until the resistance value transition type arc extinguishing switch K opens; the relatively high resistance value resistor is the resistor that generates the arc starting current limiting Ir in the circuit; (6) The electrical clearance of the main switch K1 is reasonably set so that the difference in electrical clearance ΔS between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value conforms to the international IEC standard and the relevant standards of various countries and regions in the world; the electrical clearance includes the creepage distance specified by the standard; (7) The resistance value transition type arc extinguishing switch K includes at least one transition resistor R.

2. The arc suppression structure with a resistance transition type according to claim 1, characterized in that; (1) The main switch K1 includes a transition resistor R; (2) The transition resistor R includes stepwise transition resistors R2 and R3 connected in series in the circuit of the main switch K1; (3) Set the electrical contact internal resistance of the main switch K1 to approach a resistance value of 0, set the resistance value of the stepwise transition resistor R2 to be greater than the resistance value of the stepwise transition resistor R3, and the resistance value of the stepwise transition resistor R3 to be greater than the electrical contact internal resistance of the main switch K1; the electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current working state; (4) The stepwise transition resistors R2, R3, and the main switch K1 are connected in series between the electrodes P1 and P2; (5) The transition resistor R has the following structural functions: reasonably set the resistance value of the transition resistor R so that when the main switch K1 is in the random on and off process, the current passing through the main switch K1 is the arc-starting current limiting Ir, and the arc-starting current limiting Ir is the current that limits the arc starting at the moment of the on and off of the main switch K1; (6) The resistance value transition type arc extinguishing switch K has the following self-structural functions: during the random closing process of the resistance value transition type arc extinguishing switch K, the main switch K1 first enters the conduction state with a relatively high resistance value of the stepwise transition resistor R2, then transitions to the conduction state with a slightly lower resistance value of the stepwise transition resistor R3, and finally transitions to the conduction state with a resistance value approaching 0 of the main switch K1. During this period, the resistance value of the resistance value transition type arc extinguishing switch K transitions from a relatively high resistance value to a lower resistance value until it approaches 0 resistance value and the electrical contact internal resistance of the main switch K1 conducts; during the random opening process of the resistance value transition type arc extinguishing switch K, the main switch K1 transitions from the conduction state with a resistance value approaching 0 to the conduction state with a relatively high resistance value of the stepwise transition resistor R3, and finally transitions to the conduction state with an even higher resistance value of the stepwise transition resistor R2 until the transition resistor R2 is disconnected and the resistance value transition type arc extinguishing switch K is disconnected; the relatively high resistance value resistor is the resistor that generates the arc-starting current limiting Ir in the circuit; (7) Setting the resistance value of the transition resistor R has the following functions: when the resistance value transition type arc extinguishing switch K is in the random instantaneous on and off process, the arc-starting current limiting Ir passing through the main switch K1 is the weak current that limits the arc starting; (8) Reasonably set the electrical clearance of the main switch K1 so that the difference ΔS in the electrical clearance between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value complies with the international IEC standard and the relevant standards of various countries and regions in the world; the electrical clearance includes the creepage distance specified by the standard; (9) The resistance value transition type arc extinguishing switch K includes at least 2 stepwise transition resistors.

3. The arc suppression structure with a resistance transition type according to claim 1, characterized in that; It includes a first electrode P1, a second electrode P2, a transition resistor R, a main switch K1 and an auxiliary switch Kf, thus forming a resistance-transition type arc-extinguishing switch K; (1) The main switch K1 includes the transition resistor R; (2) The transition resistor R includes the auxiliary switch Kf, and the transition resistor R and the auxiliary switch Kf are connected in series and then connected in parallel with the main switch K1 between the electrodes P1 and P2; (3) The electrical contact internal resistance of the main switch K1 is set to approach a resistance value of 0, and the resistance value of the transition resistor R is set to be greater than the electrical contact internal resistance of the main switch K1; The electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current working state; (4) The transition resistor R has the following structural functions: reasonably setting the resistance value of the transition resistor R so that when the main switch K1 is in the random on and off process, the current passing through the main switch K1 is the arc-starting current limiting Ir, and the arc-starting current limiting Ir is the current that limits the arc starting at the moment of on and off of the main switch K1; (5) The resistance-transition type arc-extinguishing switch K has the following self-structural functions: during the random closing process of the resistance-transition type arc-extinguishing switch K, the auxiliary switch Kf and the transition resistor R first enter the high-resistance conduction state, and then transition to the conduction state where the main switch K1 approaches a resistance value of 0; during the random opening process of the resistance-transition type arc-extinguishing switch K, the main switch K1 transitions from the conduction state where it approaches a resistance value of 0 to the high-resistance conduction state of the auxiliary switch Kf and the transition resistor R, and finally the auxiliary switch Kf is turned off, and the resistance-transition type arc-extinguishing switch is turned off; The high-resistance resistor is the resistor that generates the arc-starting current limiting Ir in the circuit; (6) Setting the resistance value of the transition resistor R has the following function: when the resistance-transition type arc-extinguishing switch K is in the arc-starting current limiting Ir conduction state, the current passing through the transition resistor R is the weak current that limits the arc; (7) Reasonably setting the electrical clearance of the main switch K1 so that the difference in electrical clearance ΔS between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value conforms to the international IEC standard and the relevant standards of countries and regions around the world; The electrical clearance includes the creepage distance specified by the standard; (8) The resistance-transition type arc-extinguishing switch K includes at least 1 transition resistor R.

4. The arc extinguishing structure with a resistance transition type according to claim 1, characterized in that; It includes a first electrode P1, a second electrode P2, a transition resistor R, a main switch K1, an auxiliary switch Kf, a shunt resistor R1, and a non-contact switch B, thus constituting a resistance-transition type arc-extinguishing switch K; (1) The main switch K1 includes the transition resistor R; (2) The transition resistor R includes the auxiliary switch Kf, the shunt resistor R1, and the non-contact switch B; (3) The transition resistor R, the auxiliary switch Kf, and the shunt resistor R1 are connected in series, and then are connected in parallel with the main switch K1 and the non-contact switch B between the electrodes P1 and P2; The common contact point of the auxiliary switch Kf and the shunt resistor R1 is connected to the trigger electrode of the non-contact switch B; (3) Set the electrical contact internal resistance of the main switch K1 to approach a resistance value of 0, and set the resistance value of the transition resistor R to be greater than the electrical contact internal resistance of the non-contact switch B, and the electrical contact internal resistance of the non-contact switch B is greater than the electrical contact internal resistance of the main switch K1; The electrical contact internal resistance of the main switch K1 is the internal resistance when the main switch K1 enters the rated current working state; (4) The non-contact switch B is a controllable non-arc switch; (5) The transition resistor R has the following structural functions: reasonably set the resistance value of the transition resistor R so that when the main switch K1 is in the random on and off process, the current passing through the main switch K1 is the arc-starting current limit Ir, and the arc-starting current limit Ir includes two branch currents: a. The weak current for arc-starting limitation passing through the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1; b. The trigger current and conduction current passing through the non-contact switch B; (6) The resistance-transition type arc-extinguishing switch K has the following self-structural functions: during the random closing process of the resistance-transition type arc-extinguishing switch K, the auxiliary switch Kf, the transition resistor R, and the shunt resistor R1 first enter the weak current conduction state for arc-starting limitation, and then after a response speed delay time difference, it transitions to the conduction state of the non-contact switch B; Finally, it transitions to the conduction state of the electrical contact internal resistance of the main switch K1; During the random opening process of the resistance-transition type arc-extinguishing switch K, first the main switch K1 transitions from the conduction state with a resistance value approaching 0 to the stronger resistance conduction state of the transition resistor R, the auxiliary switch Kf, and the shunt resistor R1, and after a response speed delay time difference, it transitions to the conduction state of the non-contact switch B. Finally, the auxiliary switch Kf is turned off, the branch current of the shunt resistor R1 is cut off, and the conduction current of the non-contact switch B passes through zero and is cut off, and the resistance-transition type arc-extinguishing switch K is turned off; (7) Reasonably set the electrical clearance of the main switch K1 so that the difference in electrical clearance ΔS between the transition resistor R and the main switch K1 is greater than or equal to the electrical clearance value specified by the standard, and this electrical clearance value conforms to the international IEC standard and the relevant standards of countries and regions around the world; The electrical clearance includes the creepage distance specified by the standard; (8) The resistance-transition type arc-extinguishing switch K includes at least 1 transition resistor R.

5. A resistance-transition type arc extinguishing structure according to any one of claims 1 to 4, characterized in that; Applicable to AC power supply and DC power supply.

6. The arc suppression structure with a resistance transition type according to claim 4, characterized in that; The non-contact switch B is a controllable non-arc switch, applicable to the controllable non-arc switch for arc-starting limitation.

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