Power supply control switch and performance test method thereof

Abstract

The invention discloses a power supply control switch and a performance test method thereof, and belongs to the technical field of power supplies. The power supply control switch comprises an initial switch part, a moving column, a constraint spring, a locking part and a shell, corresponding arrangement of the initial switch part, the constraint spring, the moving column and the locking part is realized by utilizing corresponding arrangement of a plurality of embedding holes in the shell, and reliable contact of the moving column and the initial switch part is ensured by arranging the constraint spring and the locking part; when the moving column feels collision overload, the moving column overcomes resistance of the restraining spring and the locking component to move and is locked by the locking component, and reliable disconnection between the moving column and the initial switch component is ensured. The device is compact in structure and convenient to assemble, can control the power supply in the circuit when any one of the positive direction and the negative direction is collided and overloaded, cuts off the output of the power supply to the outside, and has better application prospect and practical value.

Description

Technical Field

[0001] The invention belongs to the technical field of power supply, and in particular relates to a power supply control switch and a performance testing method thereof. Background Art

[0002] Power supply safety has become a major concern for people. Using inertia to achieve power supply safety control has attracted the attention of domestic researchers.

[0003] Chery Automobile Co., Ltd. proposed an inertia switch (application number 201020165552.5), which disconnects the switch by colliding a steel ball with a spring clip, and can disconnect the power circuit in a timely and reliable manner when the car collides. When the car collides, the ball of the inertia switch triggers the spring clip upward under its own inertia, causing the hinge device to retract and the hinge device to disengage from the second terminal, thereby disconnecting the power circuit. In order to prevent the steel ball from triggering the spring clip due to inertia when the car accelerates or decelerates normally, a magnet is arranged below the conical cavity of the steel ball. During normal acceleration or deceleration, the suction force of the magnet on the steel ball can prevent the ball from rolling. Only when there is a collision can the steel ball overcome the suction force of the magnet and trigger the spring clip. The suction force of the magnet on the steel ball is changed by adjusting the distance between the magnet and the steel ball until it meets the design requirements.

[0004] Although this inertial switch can realize the control of power supply, it also has some defects: first, the shape and structure of this structural parts are complex, and it can only be used in one direction. Once the direction is placed wrong, the switch conversion cannot be started, and it can only realize a single function from on to off, and it cannot realize the function of activating the airbag in the event of a car collision.

[0005] Even if improvements are made to the prior art, the extent of the improvements is limited, and it is difficult to realize the function of starting the power supply to the circuit while disconnecting the safety control of the power supply, so the technology has limitations. Summary of the invention

[0006] In view of one or more of the above defects or improvement requirements of the prior art, the present invention provides a power control switch and a performance test method thereof, which can realize reliable output of power in normal times and timely disconnect the power output to the outside in case of a collision. The present invention has a compact structure and is easy to assemble, and has good application prospects and practical value in new energy vehicles.

[0007] To achieve the above object, the present invention provides a power control switch, which includes an initial switch component, a moving column, a restraining spring, a locking component and a housing; The housing is a non-conductive column, with placement holes symmetrically arranged at both ends, and locking holes perpendicular to the placement holes symmetrically arranged on both sides of the placement holes; The initial switch component includes a cover body and a conductive column, the cover body is non-conductive and detachably connected to the end of the placement hole, two conductive columns are arranged on the cover body at intervals, one end of each conductive column extends into the placement hole, and the other end extends out of the housing and can be connected to a first wire; The moving column is a conductive column, and the moving column is placed in the placement hole, and a blind hole is opened on one side of the moving column facing the bottom of the placement hole; One end of the restraint spring is connected to the bottom of the placement hole, and the other end abuts against the blind hole of the moving column, so that the side of the moving column away from the restraint spring abuts against the ends of the two conductive columns, so that the initial switch component is in a conducting state; The locking component includes a locking pin, a locking spring and a locking screw. The locking screw is fixedly arranged in the locking hole of the shell. One end of the locking spring is connected to the locking screw, and the other end is connected to the locking pin, so that the locking pin abuts against the side of the moving column. When the moving column receives an overload signal and moves toward the bottom of the placement hole, the locking spring pushes the locking pin to lock the moving column to prevent the moving column from returning to connect the two conductive columns.

[0008] As a further improvement of the present invention, the bottoms of the two placement holes of the housing are each provided with two spaced-apart positioning holes, and the two opposite positioning holes are connected to each other, and the housing is also provided with a wiring hole at a position perpendicular to the positioning holes; The power control switch also includes a position switch component, which includes a conductive rod and a conductive cap. Two conductive rods are respectively placed in two pairs of opposite position holes. The conductive cap is connected to the end of the conductive rod to prevent the conductive rod from being separated from the position hole, so that the conductive rod can move along the position hole without falling off. The middle of the two conductive rods is respectively connected to a second wire, and the second wire passes through the wiring hole and out of the housing; When the moving column abuts against the conductive column, the restraint spring separates the moving column from the in-place switch component, and the in-place switch component is in a disconnected state; after receiving an overload signal, the moving column can move to contact the two in-place switch components and be locked by the locking component, and the in-place switch component is in a conducting state.

[0009] As a further improvement of the present invention, the in-position switch component also includes a limit spring, which is placed in each of the in-position holes, the conductive rod is placed in two opposite limit springs, and the conductive cap is connected to the end of the conductive rod to prevent the limit spring from detaching from the in-position hole.

[0010] As a further improvement of the present invention, the end of the conductive rod and the conductive cap protrude from the end surface of the in-position hole, ensuring reliable contact between the in-position switch component and the moving column when the in-position switch component is in a conducting state.

[0011] As a further improvement of the present invention, the moving column and the placement hole are clearance-matched, so that the moving column can still be reliably connected to the conductive column or the placement switch component when it tilts inside the placement hole.

[0012] As a further improvement of the present invention, when the initial switch component is in the on state, the force of the restraint spring on the motion column is not less than 20 times the mass of the motion column, so that the starting overload of the motion column is not less than 20m / s 2 .

[0013] As a further improvement of the present invention, the sum of the masses of the conductive rod and the conductive cap is 1 / 40 to 1 / 60 of the mass of the moving column.

[0014] As a further improvement of the present invention, a testing hole which is perpendicular to and connected with the placement hole is further provided at the bottom end of the placement hole of the shell.

[0015] Another aspect of the present invention provides a performance testing method for a power control switch, comprising the following process: (1) Place the power control switch in the center hole of the seat body, align the test hole of the power control switch with the hole on the seat body where the electromagnetic pin is placed, place the electromagnetic pin in the corresponding hole of the seat body, insert the output end of the electromagnetic pin into the test hole of the power control switch to block the movement of the moving column to be tested, and close the end of the seat body with a large pressure screw; (2) Fixing the base body on the centrifuge and ensuring that the movement direction of the measured moving column points away from the center of the centrifuge; (3) Leading out the first wire, the second wire and the lead wire of the electromagnetic pull pin of the power control switch to the test end through the center of the centrifuge, wherein the lead wire of the electromagnetic pull pin is connected to the power supply, and the first wire and the second wire are connected to the oscilloscope; (4) Setting the centrifugal overload value and duration on the centrifuge; (5) The centrifuge is centrifugally started according to the overload value and duration set in step (4). When the centrifuge reaches the predetermined centrifugal overload value, the power supply of the electromagnetic pull pin is turned on to release the constraint of the measured moving column. The measured moving column overcomes the resistance of the constraint spring and moves toward the in-place switch component. The initial switch component changes from on to off, and the in-place switch component changes from off to on. At the same time, the oscilloscope records the on-off signal and the conversion time of the corresponding switch.

[0016] As a further improvement of the present invention, the performance testing method of the power control switch further includes: (6) If the oscilloscope in step (5) does not detect the switching of the power control switch, return to step (4) to adjust the setting conditions of the centrifuge to increase the centrifugal overload value and / or the duration.

[0017] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0018] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: (1) The power control switch of the present invention includes an initial switch component, a moving column, a restraining spring, a locking component and a housing. The corresponding arrangement of the initial switch component, the restraining spring, the moving column and the locking component is achieved by correspondingly opening a plurality of embedded holes on the housing. By setting the restraining spring and the locking component, it is ensured that the moving column is in reliable contact with the initial switch component, and the initial switch component is in a conducting state, thereby ensuring that the power supply of the circuit can reliably output electrical energy; when the moving column senses a collision overload, it overcomes the resistance of the restraining spring and the locking component and is locked by the locking component, thereby disconnecting the power supply of the circuit from external output. The present invention has a compact structure and is easy to assemble. When it is subjected to a collision overload in either the positive or negative direction, it can realize the control of the power supply and disconnect the power supply from external output. It has good application prospects and practical value.

[0019] (2) The power control switch of the present invention is provided with a fixed switch component in the middle. In normal state, the initial switch component is in the on state to ensure the stable output of the power supply of the circuit, and the fixed switch component is in the off state. When a collision occurs, the moving column moves to connect the fixed switch component, and the initial switch component on one side is in the off state to disconnect the external output of the power supply. The fixed switch component 6 is in the on state to start the power supply to other circuits and realize the circuit conversion. The power control switch of the present invention can realize the function of starting the power supply to other circuits while realizing the safety control of disconnecting the power supply.

[0020] (3) The power control switch of the present invention realizes soft contact between the moving column and the in-place switch component by adding a limit spring in the in-place switch component, so that the conversion circuit maintains a stable connection; at the same time, the sum of the masses of the conductive rod and the conductive cap is limited to 1 / 40 to 1 / 60 of the mass of the moving column, and the limit spring is mainly compressed by the moving column to achieve flexible adjustment of the limit spring, thereby ensuring reliable contact between the moving column and the conductive rod or the conductive cap; in addition, the end of the conductive rod and the end face of the conductive cap protruding from the in-place hole also ensure reliable contact between the in-place switch component and the moving column when the in-place switch component is in the on state.

[0021] (4) The power control switch of the present invention is provided with a clearance fit between the moving column and the placement hole, so that when the moving column tilts inside the placement hole, it can still be reliably connected to the conductive column or the placement switch component.

[0022] (5) The performance testing method of the power control switch of the present invention can accurately realize the on-off control of the initial switch component and the in-place switch component, thus providing conditions for power control. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a cross-sectional view of the structure of the power control switch in the embodiment of the present invention in the initial state; Figure 2 is a cross-sectional view of the power control switch in the embodiment of the present invention in the state of being in place; Figure 3 is a cross-sectional view of a shell in an embodiment of the present invention; Figure 4 is a shell appearance diagram in an embodiment of the present invention; Figure 5 is a cross-sectional view of an initial switch component in an embodiment of the present invention; Figure 6 is a cross-sectional view of a switch component in place according to an embodiment of the present invention; Figure 7 is a cross-sectional view of the structure of the intermediate state of the power control switch in the embodiment of the present invention when the power control switch moves at an inclined angle; Figure 8 It is an installation cross-sectional view of a power control switch in an embodiment of the present invention during a performance test; Fig. 9 It is the simulation analysis result of the embodiment of the present invention.

[0025] In all the drawings, the same reference numerals represent the same technical features, specifically: 1. Initial switch component; 101. Cover body; 102. Conductive column; 2. Moving column; 3. Restraining spring; 4. Locking component; 401. Locking pin; 402. Locking spring; 403. Locking screw; 5. Shell; 501. Placement hole; 502. Locking hole; 503. Position hole; 504. Wiring hole; 505. Test hole; 6. Position switch component; 601. Conductive rod; 602. Conductive cap; 603. Limit spring; 7. Seat; 8. Electromagnetic pull pin; 9. Large pressure screw; 10. First wire; 20. Second wire; 100. Power control switch. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] Example: See also Figure 1~Figure 4 The power control switch in the preferred embodiment of the present invention includes an initial switch component 1, a moving column 2, a restraining spring 3, a locking component 4 and a housing 5.

[0032] Among them, Figure 3 As shown, the shell 5 is a non-conductive column, and placement holes 501 are symmetrically arranged at both ends of the shell, and locking holes 502 perpendicular to the placement holes 501 are symmetrically arranged on both sides of the placement holes 501; the initial switch component 1 includes a cover body 101 and a conductive column 102, the cover body 101 is non-conductive and can be detachably connected to the end of the placement hole 501, and two conductive columns 102 are arranged on the cover body 101 at intervals, one end of each conductive column 102 extends into the placement hole 501, and the other end extends out of the shell 5 and is connected to the first wire 10; the moving column 2 is a conductive column, the moving column 2 is placed in the placement hole 501, and a blind hole is opened on one side of the moving column 2 facing the bottom of the placement hole 501; one end of the restraining spring 3 is connected to the placement hole 501 The bottom of the moving column 2 is pressed against the other end, and the other end is pressed against the blind hole of the moving column 2, so that the side of the moving column 2 away from the constraint spring 3 is pressed against the ends of the two conductive columns 102, so that the initial switch component 1 is in a conductive state; the locking component 4 includes a locking pin 401, a locking spring 402 and a locking screw 403, and the locking screw 403 is fixedly arranged in the locking hole 502 of the shell 5, one end of the locking spring 402 is connected to the locking screw 403, and the other end is connected to the locking pin 401, so that the locking pin 401 is pressed against the side of the moving column 2, and when the moving column 2 receives an overload signal and moves to the bottom of the placement hole 501, the locking spring 402 pushes the locking pin 401 to lock the moving column 2 to prevent the moving column 2 from returning to connect the two conductive columns 102.

[0033] like Figure 1As shown, the motion column 2 is pushed by the restraining spring 3 to abut against the conductive column 101 to achieve the initial conduction of the switch component 1. At the same time, the locking components 4 on both sides push the locking pin 4-1 through the locking spring 402 to achieve flexible locking of the motion column 2 so that it is in the middle position of the placement hole 501. When the power control switch of the present invention is in use, the first wire 10 of the power control switch is connected in series in the power circuit. At this time, the restraining spring 3 can ensure that the motion column 2 abuts against the two conductive columns 101 and will not be separated. The initial switch component 1 is in the conducting state, so that the power supply can reliably output electrical energy; Figure 2 As shown, when a collision occurs on one side, the motion column 2 on that side receives an overload signal, that is, the inertia force of the motion column 2 itself is greater than the thrust of the constraint spring 3, and the motion column 2 overcomes the resistance of the constraint spring 3 and moves to the bottom of the placement hole 501, disconnecting from the conductive column 101, thereby disconnecting the power circuit. At the same time, the locking pins 401 on both sides of the motion column 2 are pushed by the locking spring 402 to extend between the motion column 2 and the conductive column 101 to lock the motion column 2, so as to prevent the motion column 2 from being pushed back to the conductive column 101 by the constraint spring 3, thereby reliably disconnecting the power output of the power supply.

[0034] The two ends of the power control switch of the present invention are sequentially provided with an initial switch component 1, a moving column 3, and a restraining spring 4 from the outside to the inside. When a collision overload is caused in any one of the positive and negative directions, the power supply can be controlled and the power supply output to the outside can be disconnected. The power control switch has good application prospects and practical value in new energy vehicles.

[0035] Preferably, when the initial switch component 1 is in the on state, the thrust of the restraining spring 3 on the moving column 2 is not less than 20 times the mass of the moving column 2, so that the starting overload of the moving column 2 is not less than 20m / s 2 .

[0036] In this preferred embodiment, taking into account the friction force of the locking component 4, the actual starting overload of the moving column 2 is greater. Usually, the deceleration overload during vehicle braking is below 10m / s2. Setting the starting overload of the moving column 2 to above 20m / s2 can ensure that the power control switch will not be mistakenly started under braking and other conditions.

[0037] Preferably, the housing 5 is a cylindrical structure, which is preferably made of polysulfone rod material.

[0038] Preferably, the cover body 101 is a cylinder made of a polysulfone rod material, with threads on the outside, and is fixedly connected to the end of the placement hole 501 by threaded fit.

[0039] Specifically preferably, Figure 5As shown, the cover body 101 is provided with two stepped holes spaced apart from each other, wherein the small hole is a threaded hole, the conductive column 102 is a stepped column structure, the outer side of the small cylinder is provided with threads, which are fixed with the threads on the stepped hole, and the large cylinder of the conductive column 102 is provided with cross holes which penetrate each other for welding and fixing the first wire 10.

[0040] More preferably, if Figure 3 , 4 As shown, the bottom of the two placement holes 501 are provided with two spaced-apart holes 503, and the two opposite holes 503 are connected to each other, and the housing 5 is also provided with a wiring hole 504 at a position perpendicular to the holes 503; the power control switch also includes a position switch component 6, and the position switch component 6 includes a conductive rod 601 and a conductive cap 602. The two conductive rods 601 are respectively placed in two pairs of opposite holes 503, and the conductive cap 602 is connected to the end of the conductive rod 601 to prevent the conductive rod 601 from being separated from the position hole 503, so that the conductive rod 601 can move along the in-place hole 503 without falling off, the middle of the two conductive rods 601 are respectively connected with the second wire 20, and the second wire 20 passes through the housing 5 through the wiring hole 504; when the moving column 2 abuts against the conductive column 102, the restraining spring 3 separates the moving column 2 from the in-place switch component 6, and the in-place switch component 6 is in a disconnected state; after receiving the overload signal, the moving column 2 can move to contact with the two in-place switch components 6 and be locked by the locking component 4, and the in-place switch component 6 is in a conducting state.

[0041] In this preferred embodiment, a switch component 6 is added in the middle of the power control switch. In normal state, the initial switch component 1 is in the on state to ensure the stable output of the power supply, and the switch component 6 is in the off state; when a collision occurs, such as Figure 2 As shown, the moving column 2 moves to connect the in-position switch component 6, and the initial switch component 1 on one side is in the off state to disconnect the external output of the power supply. The in-position switch component 6 is in the on state to start the power supply to other circuits and realize the circuit conversion.

[0042] Preferably, the second wire 20 connected to the in-place switch component 6 can be connected to the circuit of the indicator light to realize the function of timely reminder when a collision occurs; preferably, the second wire 20 can also be connected to the circuit of the airbag to realize the function of instantly starting the airbag once a collision occurs.

[0043] Furthermore, the in-position switch component 6 also includes a limit spring 603, which is placed in each of the in-position holes 503, and the conductive rod 601 is placed in two opposite limit springs 603, and the conductive cap 602 is connected to the end of the conductive rod 601 to prevent the limit spring 603 from detaching from the in-position hole 503.

[0044] In this embodiment, the limit spring 603 is provided to achieve soft contact between the moving column 2 and the in-position switch component 6, so that the conversion circuit maintains a stable connection to prevent the moving column 2 from being inadequately connected to the in-position switch component 6.

[0045] Preferably, the sum of the masses of the conductive rod 601 and the conductive cap 602 is 1 / 40 to 1 / 60 of the mass of the moving column 2. When the conductive rod 601 and the conductive cap 602 are subjected to penetration overload, their own mass is insufficient to compress the limit spring 603 into place. When the moving column 2 touches the conductive rod 601 or the conductive cap 602 downward, the limit spring 603 is compressed by the total mass of the moving column 2 and the conductive rod 601 and the conductive cap 602 to move. The limit spring 603 realizes flexible adjustment to ensure reliable contact between the moving column 2 and the conductive rod 601 or the conductive cap 602.

[0046] Preferably, the end of the conductive rod 601 and the conductive cap 602 protrude from the end surface of the positioning hole 503 to ensure reliable contact between the positioning switch component 6 and the moving column 2 when the positioning switch component 6 is in the on state.

[0047] For example, Figure 6 As shown, the in-position switch component 6 is composed of a conductive rod 601, a conductive cap 602 and a limit spring 603, wherein the conductive rod 601 is a stepped cylindrical structure made of copper material with good conductivity, the large cylinder is a working surface, which is used to contact the moving column 2 to achieve the conduction function, the small cylinder has a thread at one end opposite to the large cylinder, the conductive cap 602 is a ring structure made of copper material with good conductivity, and has a thread inside, and the conductive cap 602 is nested at one end of the conductive rod 601 through thread matching, and the in-position switch component 6 is placed in the in-position of the housing 5. When the hole 503 is in the corresponding position, first place the limit spring 603 in the placement hole 501 on one side at the corresponding position of the placement hole 503, then insert the conductive rod 601, and then place another limit spring 603 in the placement hole 501 on the other side at the corresponding position of the placement hole 503 on the other side, and then fix the conductive cap 602 on the conductive rod 601, and the placement switch component 6 is fixed on the placement hole 503. The two placement switch components 6 are both welded with wires in the middle of their respective conductive rods 601, and the wires pass through the wiring hole 504.

[0048] Preferably, the motion column 2 and the placement hole 501 are clearance-fitted, so that the motion column 2 can still be reliably connected to the conductive column 102 or the placement switch component 6 when it tilts inside the placement hole.

[0049] In this embodiment, the gap is set so that when the axis of the moving column 2 is at an angle to the axis of the housing 1, the moving column 2 can still move to the correct position and achieve reliable contact with the initial switch component 1 or the correct switch component 6. Figure 7The figure shows the state of tilting movement. In this state, when there is still a continuous overload, the locking component 4 at the lower end in a compressed state will automatically push the moving column 2 to align its position, thereby achieving reliable contact with the two in-place switch components 6.

[0050] Preferably, a test hole 505 which is perpendicular to and connected to the placement hole 501 is further provided at the bottom of the placement hole 501 of the housing 5, so as to test the performance of the power control switch.

[0051] Before actual use, the present application also provides a performance testing method of the power management switch 100, including the following process: (1) Place the power control switch 100 in the center hole of the seat 7, align the test hole 505 of the power control switch 100 with the hole on the seat 7 where the electromagnetic pull pin 8 is placed, place the electromagnetic pull pin 8 in the corresponding hole of the seat 7, insert the output end of the electromagnetic pull pin 8 into the test hole 505 of the power control switch to block the movement of the moving column 2 to be tested, and close the open end of the seat 7 with the large pressure screw 9; Specifically, Figure 8 As shown, adjustment pads can be placed on both sides of the power control switch 100 in the center hole of the seat body 7. By setting different numbers of adjustment pads, the test hole 505 of the power control switch is aligned with the hole on the seat body 7 where the electromagnetic pull pin 8 is placed.

[0052] (2) Fixing the seat 7 on the centrifuge and ensuring that the movement direction of the measured moving column 2 points away from the center of the centrifuge; (3) Leading out the first wire 10, the second wire 20 of the power control switch 100 and the lead wire of the electromagnetic pull pin 8 to the test end through the center of the centrifuge, wherein the lead wire of the electromagnetic pull pin 8 is connected to the power supply, and the first wire 10 and the second wire 20 are connected to the oscilloscope; (4) Setting the centrifugal overload value and duration on the centrifuge; (5) The centrifuge is centrifugally started according to the overload value and duration set in step (4). When the centrifuge reaches the predetermined centrifugal overload value, the power supply of the electromagnetic pull pin 8 is turned on to release the constraint on the measured moving column 2. The measured moving column 2 overcomes the resistance of the constraint spring 3 and moves toward the in-place switch component 6. The initial switch component 1 changes from on to off, and the in-place switch component 6 changes from off to on. At the same time, the oscilloscope records the on-off signals and conversion time of the corresponding switches.

[0053] Furthermore, the performance testing method of the power management switch 100 further includes: (6) If the oscilloscope in step (5) does not detect the switching of the power control switch, return to step (4) to adjust the setting conditions of the centrifuge to increase the centrifugal overload value and / or the duration.

[0054] In this embodiment, the performance of the power control switch 100 of the present invention can be detected by this testing method, and the critical value of the starting overload and the critical value of the duration of the power control switch 100 can be obtained, so as to facilitate further improvement of the power control switch 100 so that it can be applicable to various power control situations.

[0055] In a specific preferred embodiment, the performance of the power control switch 100 is tested according to the parameters in Table 1 and the motion conditions in Table 2.

[0056] Table 1 Parameter settings of control switches

[0057] Table 2 Exercise condition settings

[0058] At the same time, ADAMS dynamics simulation analysis software is used to perform kinematic simulation analysis on the control switch. Figure 1 The 3D model shown in the figure is imported into the software, the parameters of the power control switch are set according to Table 1, and the motion conditions are set as shown in Table 2. The simulation results are shown in Fig. 9 As shown in Table 3, the power control switch can be activated in place under 10g~25g overload conditions, and the switching time is 1.12ms~1.47ms. The actual test results of this embodiment are compared with the simulation analysis results as shown in Table 3.

[0059] Table 3 Comparison of centrifugal test and simulation analysis of the embodiment

[0060] It can be seen from Table 3 that the actual centrifugal test results are basically consistent with the simulation analysis results, and the actual test values ​​are slightly larger. The main reason is that the moving column 2 still has friction with the placement hole 501 of the shell 5 when moving, as well as errors in the actual processing of parts and other comprehensive factors. The result error does not affect the normal function of the embodiment.

[0061] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power control switch, characterized in that: It includes an initial switch component, a moving column, a restraining spring, a locking component and a housing; The housing is a non-conductive column, with placement holes symmetrically arranged at both ends, and locking holes perpendicular to the placement holes symmetrically arranged on both sides of the placement holes; The initial switch component includes a cover body and a conductive column, the cover body is non-conductive and detachably connected to the end of the placement hole, two conductive columns are arranged on the cover body at intervals, one end of each conductive column extends into the placement hole, and the other end extends out of the housing and can be connected to a first wire; The moving column is a conductive column, and the moving column is placed in the placement hole, and a blind hole is opened on one side of the moving column facing the bottom of the placement hole; One end of the restraint spring is connected to the bottom of the placement hole, and the other end abuts against the blind hole of the moving column, so that the side of the moving column away from the restraint spring abuts against the ends of the two conductive columns, so that the initial switch component is in a conducting state; The locking component includes a locking pin, a locking spring and a locking screw. The locking screw is fixedly arranged in the locking hole of the shell. One end of the locking spring is connected to the locking screw, and the other end is connected to the locking pin, so that the locking pin abuts against the side of the moving column. When the moving column receives an overload signal and moves toward the bottom of the placement hole, the locking spring pushes the locking pin to lock the moving column to prevent the moving column from returning to connect the two conductive columns.

2. The power control switch according to claim 1, characterized in that: The bottom of the two placement holes of the housing are each provided with two spaced-apart positioning holes, and the two opposite positioning holes are connected to each other, and the housing is also provided with a wiring hole at a position perpendicular to the positioning holes; The power control switch also includes a position switch component, which includes a conductive rod and a conductive cap. Two conductive rods are respectively placed in two pairs of opposite position holes. The conductive cap is connected to the end of the conductive rod to prevent the conductive rod from being separated from the position hole, so that the conductive rod can move along the position hole without falling off. The middle of the two conductive rods is respectively connected to a second wire, and the second wire passes through the wiring hole and out of the housing; When the moving column abuts against the conductive column, the restraint spring separates the moving column from the in-place switch component, and the in-place switch component is in a disconnected state; after receiving an overload signal, the moving column can move to contact the two in-place switch components and be locked by the locking component, and the in-place switch component is in a conducting state.

3. The power control switch according to claim 2, characterized in that: The in-position switch component also includes a limit spring, which is placed in each of the in-position holes. The conductive rod is placed in two opposite limit springs, and the conductive cap is connected to the end of the conductive rod to prevent the limit spring from escaping from the in-position hole.

4. The power control switch according to claim 2 or 3, characterized in that: The end of the conductive rod and the conductive cap protrude from the end surface of the in-position hole, ensuring that the in-position switch component is in reliable contact with the moving column when in the on state.

5. The power control switch according to any one of claims 1 to 3, characterized in that: The moving column and the placement hole are clearance-matched, so that the moving column can still be reliably connected to the conductive column or the placement switch component when it tilts inside the placement hole.

6. The power control switch according to any one of claims 1 to 3, characterized in that: When the initial switch component is in the on state, the force of the restraining spring on the moving column is not less than 20 times the mass of the moving column, so that the starting overload of the moving column is not less than 20m / s 2 .

7. The power control switch according to any one of claims 1 to 3, characterized in that: The sum of the masses of the conductive rod and the conductive cap is 1 / 40 to 1 / 60 of the mass of the moving column.

8. The power control switch according to claim 2 or 3, characterized in that: A testing hole which is perpendicular to and communicates with the placement hole is also arranged at the bottom end of the placement hole of the shell.

9. A performance testing method for a power control switch as claimed in claim 8, characterized in that: The process includes the following: (1) Place the power control switch in the center hole of the seat body, align the test hole of the power control switch with the hole on the seat body where the electromagnetic pin is placed, place the electromagnetic pin in the corresponding hole of the seat body, insert the output end of the electromagnetic pin into the test hole of the power control switch to block the movement of the moving column to be tested, and close the end of the seat body with a large pressure screw; (2) Fixing the seat body on the centrifuge and ensuring that the movement direction of the moving column to be measured points away from the center of the centrifuge; (3) Leading out the first wire, the second wire and the lead wire of the electromagnetic pull pin of the power control switch to the test end through the center of the centrifuge, wherein the lead wire of the electromagnetic pull pin is connected to the power supply, and the first wire and the second wire are connected to the oscilloscope; (4) Setting the centrifugal overload value and duration on the centrifuge; (5) The centrifuge is centrifugally started according to the overload value and duration set in step (4). When the centrifuge reaches the predetermined centrifugal overload value, the power supply of the electromagnetic pull pin is turned on to release the constraint of the measured moving column. The measured moving column overcomes the resistance of the constraint spring and moves toward the in-place switch component. The initial switch component changes from on to off, and the in-place switch component changes from off to on. At the same time, the oscilloscope records the on-off signal and the conversion time of the corresponding switch.

10. The performance testing method of a power control switch according to claim 9, characterized in that: Also includes: (6) If the oscilloscope in step (5) does not detect the switching of the power control switch, return to step (4) to adjust the setting conditions of the centrifuge to increase the centrifugal overload value and / or the duration.

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