Measurement auxiliary device of magnetic coupling mechanism and measurement method of magnetic coupling mechanism

Abstract

The invention provides an auxiliary measurement device of a magnetic coupling mechanism. The auxiliary measurement device comprises the magnetic coupling mechanism, a logic switching device and an impedance analyzer. Wherein the logic switch device is electrically connected with the magnetic coupling mechanism, and the impedance analyzer is electrically connected with the logic switch device. On-off of the magnetic coupling mechanism and the impedance analyzer is controlled through the logic switch device, the flow direction of current can be changed, rapid switching of different testing schemes is achieved, the impedance analyzer is further used for measuring the mutual inductance value and the resistance value of the magnetic coupling mechanism, and rapid, accurate and batch measurement of self inductance, internal resistance and mutual inductance of the double-coil mechanism magnetic coupling mechanism is completed. According to the measurement auxiliary device of the magnetic coupling mechanism, the operation difficulty and workload of batch mutual inductance testing are greatly reduced, meanwhile, the batch testing precision and the data reliability are improved, and the measurement auxiliary device has the advantages of being high in adaptability, wide in application range, easy to operate and low in cost.

Description

Technical Field

[0001] The present invention relates to the field of magnetic coupling mechanisms, and in particular to a measurement auxiliary device for a magnetic coupling mechanism and a measurement method for a magnetic coupling mechanism. Background Art

[0002] At present, in the prior art, the magnetic coupling mechanism in the magnetic coupling resonant wireless power transmission system is usually composed of two coils, namely, a transmitting coil and a receiving coil. Mutual inductance parameters are key parameters of the magnetic coupling mechanism. At the same time, mutual inductance parameters are easily affected by the relative position of the coils and the surrounding environment and fluctuate over a large range. Therefore, batch measurement of mutual inductance parameters is a key step in designing magnetic coupling mechanisms. However, the traditional batch measurement method of self-inductance, internal resistance, and mutual inductance parameters of dual-coil mechanisms is complicated to operate, has low test accuracy, large batch test workload, large data errors, and long test cycles. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present invention provides a measurement auxiliary device for a magnetic coupling mechanism.

[0005] A second aspect of the present invention provides a method for measuring a magnetic coupling mechanism.

[0006] In view of this, the first aspect of the present invention provides a measurement auxiliary device for a magnetic coupling mechanism, comprising: a magnetic coupling mechanism; a logic switch device, the logic switch device is provided with an electrical connection with the magnetic coupling mechanism; an impedance analyzer, the impedance analyzer is electrically connected to the logic switch device, and the impedance analyzer is used to measure the mutual inductance and resistance value of the magnetic coupling mechanism; wherein the logic switch device is used to control the on and off of the magnetic coupling mechanism and the impedance analyzer.

[0007] In addition, the measurement auxiliary device of the magnetic coupling mechanism in the above technical solution provided by the present invention may also have the following additional technical features: In some technical solutions of the present invention, optionally, the magnetic coupling mechanism includes: a first coil, a first end of the first coil is electrically connected to the first end of the logic switch device, and a second end of the first coil is electrically connected to the second end of the logic switch device; a second coil, a first end of the second coil is electrically connected to the third end of the logic switch device, and a second end of the second coil is electrically connected to the fourth end of the logic switch device; wherein the first end of the logic switch device is electrically connected to the first end of the impedance analyzer.

[0008] In some technical schemes of the present invention, optionally, the logic switch device includes: a self-locking normally open and normally closed switch, wherein the first end of the self-locking normally open and normally closed switch is connected to the second end of the first coil of the first coil, and the second end of the self-locking normally open and normally closed switch is electrically connected to the second end of the impedance analyzer; a self-locking two normally open and two normally closed switch, wherein the first end of the self-locking two normally open and two normally closed switch is connected to the second end of the first coil, and the self-locking two normally open and two normally closed switches are electrically connected to the second coil; wherein the third end of the self-locking normally open and normally closed switch is electrically connected to the third end of the self-locking two normally open and two normally closed switch, the self-locking two normally open and two normally closed switch is used to control the current flow direction to the second coil, and the self-locking two normally open and two normally closed switches are used to control the current flow direction to the impedance analyzer.

[0009] In some technical schemes of the present invention, optionally, the self-locking normally open and normally closed switch includes: a first switch, one end of the first switch is electrically connected to the second end of the first coil, and the other end of the first switch is electrically connected to the second end of the impedance analyzer; a second switch, one end of the second switch is electrically connected to the self-locking normally open and normally closed switch, and the other end of the second switch is electrically connected to the second end of the impedance analyzer; a first state switching button, the first state switching button is electrically connected to the first switch, and the first state switching button is electrically connected to the second switch; wherein, in the initial state, the first switch is in the normally open state, and the second switch is in the normally closed state, and the first state switching button is used to simultaneously switch the states of the first switch and the second switch.

[0010] In some technical schemes of the present invention, optionally, the self-locking two normally open and two normally closed switches include: a third switch, one end of the third switch is electrically connected to the second end of the first coil, and the other end of the third switch is electrically connected to the second end of the second coil; a fourth switch, one end of the fourth switch is electrically connected to the second end of the first coil, and the other end of the fourth switch is electrically connected to the first end of the second coil; a fifth switch, one end of the fifth switch is electrically connected to the first end of the second coil, and the other end of the fifth switch is electrically connected to one end of the second switch; a sixth switch, one end of the sixth switch is electrically connected to the second end of the second coil, and the other end of the sixth switch is electrically connected to one end of the second switch; a second state switching button, the second state switching button is electrically connected to the third switch, the second state switching button is electrically connected to the fourth switch, the second state switching button is electrically connected to the fifth switch, and the second state switching button is electrically connected to the sixth switch; wherein, in the initial state, the third switch and the fifth switch are both in the normally open state, the fourth switch and the sixth switch are both in the normally closed state, and the second state switching button is used to simultaneously switch the states of the third switch, the fourth switch, the fifth switch and the sixth switch.

[0011] The second aspect of the present invention provides a method for measuring a magnetic coupling mechanism, which is used as a measurement auxiliary device for the magnetic coupling mechanism, including: obtaining a first inductance value in an initial state and a resistance value of the magnetic coupling mechanism; changing the state of a self-locking two normally open and two normally closed switch to obtain a second inductance value in the current state; based on the first inductance value and the second inductance value, obtaining a mutual inductance value of a first coil and a second coil; resetting a logic switch device to an initial state, changing the state of the self-locking normally open and normally closed switch, obtaining an inductance value of the first coil and a resistance value of the first coil; based on the first inductance value, the mutual inductance value and the inductance value of the first coil, obtaining an inductance value of the second coil; based on the resistance value of the magnetic coupling mechanism and the resistance value of the first coil, obtaining the resistance value of the second coil.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is one of the schematic diagrams of a measurement auxiliary device of a magnetic coupling mechanism according to an embodiment of the present invention; Figure 2 is one of the schematic diagrams of a measurement auxiliary device of a magnetic coupling mechanism according to an embodiment of the present invention; Figure 3 is a flow chart of a method for measuring a magnetic coupling mechanism according to an embodiment of the present invention; in, Figure 1 to Figure 2 The corresponding relationship between the reference numerals and component names in the figure is: The first coil L1, the second coil L2, the first switch SA1, the second switch SA2, the first state switching button SA, the third switch SB1, the fourth switch SB2, the fifth switch SB3, the sixth switch SB4, and the second state switching button SB. DETAILED DESCRIPTION

[0014] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0015] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0016] Refer to the following Figures 1 to 3 A measurement auxiliary device for a magnetic coupling mechanism and a measurement method for a magnetic coupling mechanism according to some embodiments of the present invention are described.

[0017] like Figure 1 to Figure 2 As shown, the first aspect of the present invention provides a measurement auxiliary device for a magnetic coupling mechanism, comprising: a magnetic coupling mechanism; a logic switch device, the logic switch device is provided with an electrical connection with the magnetic coupling mechanism; an impedance analyzer, the impedance analyzer is electrically connected to the logic switch device, and the impedance analyzer is used to measure the mutual inductance and resistance value of the magnetic coupling mechanism; wherein the logic switch device is used to control the on and off of the magnetic coupling mechanism and the impedance analyzer.

[0018] The present invention provides a measurement auxiliary device for a magnetic coupling mechanism, comprising a magnetic coupling mechanism, a logic switch device and an impedance analyzer, wherein the logic switch device is provided with an electrical connection with the magnetic coupling mechanism, and the impedance analyzer is electrically connected with the logic switch device.

[0019] By controlling the on and off of the magnetic coupling mechanism and the impedance analyzer through a logic switch device, the direction of current flow can be changed, and fast switching of different test schemes can be achieved. The impedance analyzer is then used to measure the mutual inductance and resistance of the magnetic coupling mechanism, completing fast, accurate, and batch measurement of the self-inductance, internal resistance, and mutual inductance of the magnetic coupling mechanism of the dual-coil mechanism.

[0020] The measurement auxiliary device of the magnetic coupling mechanism of the present invention greatly reduces the operational difficulty and workload of batch mutual inductance testing, while improving the batch test accuracy and data reliability, and has the advantages of strong adaptability, wide application range, simple operation and low cost.

[0021] It should be noted that the traditional batch measurement method of dual-coil self-inductance and internal resistance adopts direct measurement, and then disconnects one end to perform batch measurement of mutual inductance by first positive series connection and then reverse series connection. This measurement method has the following disadvantages: in batch testing, manual replacement of test points will cause wear of equipment contacts and affect test accuracy; in batch testing, test nodes need to be replaced frequently, which is complicated to operate, labor-intensive and time-consuming; in the process of positive and reverse series connection, the knotting of test wires will introduce unnecessary impedance and increase test errors.

[0022] Furthermore, in some embodiments of the present invention, the magnetic coupling mechanism includes: a first coil L1, a first end of the first coil L1 is electrically connected to a first end of the logic switch device, and a second end of the first coil L1 is electrically connected to a second end of the logic switch device; a second coil L2, a first end of the second coil L2 is electrically connected to a third end of the logic switch device, and a second end of the second coil L2 is electrically connected to a fourth end of the logic switch device; wherein the first end of the logic switch device is electrically connected to a first end of an impedance analyzer.

[0023] In this embodiment, the magnetic coupling mechanism includes a first coil L1 and a second coil L2, wherein the first end of the first coil L1 is electrically connected to the first end of the logic switch device, the second end of the first coil L1 is electrically connected to the second end of the logic switch device, the first end of the second coil L2 is electrically connected to the third end of the logic switch device, and the second end of the second coil L2 is electrically connected to the fourth end of the logic switch device.

[0024] By electrically connecting the first coil L1 and the second coil L2 to different ports of the logic switch device, the on / off of the first coil L1, the second coil L2 and the impedance analyzer can be controlled by the logic switch device. On this basis, the first end of the logic switch device is electrically connected to the first end of the impedance analyzer, so that the first end of the impedance analyzer can be stably connected to the magnetic coupling mechanism, which is convenient for subsequent measurement processing.

[0025] Specifically, by connecting the first coil and the second coil to the logic switch electrical appliance respectively, when it is necessary to measure the mutual inductance values ​​of the two coils at different positions, it is only necessary to move the coils without plugging and unplugging the measurement interface, which is more convenient and quick.

[0026] It is understandable that the magnetic coupling mechanism of the present invention can be extended to a multi-coil system, that is, a batch measurement of self-inductance, internal resistance, and mutual inductance with a total number of coils greater than 2.

[0027] Further, in some embodiments of the present invention, the logic switch device includes: a self-locking normally open and normally closed switch, wherein the first end of the self-locking normally open and normally closed switch is connected to the second end of the first coil L1 of the first coil L1, and the second end of the self-locking normally open and normally closed switch is electrically connected to the second end of the impedance analyzer; a self-locking two normally open and two normally closed switch, wherein the first end of the self-locking two normally open and two normally closed switch is connected to the second end of the first coil L1, and the self-locking two normally open and two normally closed switches are electrically connected to the second coil L2; wherein the third end of the self-locking normally open and normally closed switch is electrically connected to the third end of the self-locking two normally open and two normally closed switch, the self-locking two normally open and two normally closed switch is used to control the current flow direction to the second coil L2, and the self-locking normally open and normally closed switch is used to control the current flow direction to the impedance analyzer.

[0028] In this embodiment, the logic switch device includes a self-locking normally open normally closed switch and a self-locking two normally open and two normally closed switch. The first end of the self-locking normally open normally closed switch is connected to the second end of the first coil L1 of the first coil L1, the second end of the self-locking normally open normally closed switch is electrically connected to the second end of the impedance analyzer, the first end of the self-locking two normally open and two normally closed switch is connected to the second end of the first coil L1, the self-locking two normally open and two normally closed switch is electrically connected to the second coil L2, and the third end of the self-locking normally open and normally closed switch is electrically connected to the third end of the self-locking two normally open and two normally closed switch.

[0029] When the logic switch device is working, the self-locking normally open and normally closed switch can control the current flow to the impedance analyzer, so that the impedance analyzer can measure the device to be tested. The self-locking two normally open and two normally closed switches control the current flow of the second coil L2. Therefore, when the inductance and resistance values ​​related to the second coil L2 need to be tested, the self-locking two normally open and two normally closed switches can be used to switch the second coil L2 from positive series to reverse series or reverse series to positive series.

[0030] The logic switch device of the present invention helps the impedance analyzer to more accurately measure the inductance and resistance of the device, thereby improving the accuracy and reliability of the test, greatly simplifying the operation process, improving work efficiency, and enhancing the stability of the measurement.

[0031] Further, in some embodiments of the present invention, the self-locking normally open and normally closed switch includes: a first switch SA1, one end of the first switch SA1 is electrically connected to the second end of the first coil L1, and the other end of the first switch SA1 is electrically connected to the second end of the impedance analyzer; a second switch SA2, one end of the second switch SA2 is electrically connected to, and the other end of the second switch SA2 is electrically connected to the second end of the impedance analyzer; a first state switching button SA, the first state switching button SA is electrically connected to the first switch SA1, and the first state switching button SA is electrically connected to the second switch SA2; wherein, in the initial state, the first switch SA1 is in the normally open state, and the second switch SA2 is in the normally closed state, and the first state switching button SA is used to simultaneously switch the states of the first switch SA1 and the second switch SA2.

[0032] In this embodiment, the self-locking normally open normally closed switch includes a first switch SA1, a second switch SA2 and a first state switching button.

[0033] Among them, one end of the first switch SA1 is electrically connected to the second end of the first coil L1, the other end of the first switch SA1 is electrically connected to the second end of the impedance analyzer, one end of the second switch SA2 is electrically connected to the self-locking normally open and normally closed switch, the other end of the second switch SA2 is electrically connected to the second end of the impedance analyzer, the first state switching button SA is electrically connected to the first switch SA1, and the first state switching button SA is electrically connected to the second switch SA2.

[0034] In the initial state, the first switch SA1 is in the normally open state, and the second switch SA2 is in the normally closed state. When the self-locking normally open and normally closed switch is working, the first state switching button SA is used to switch the states of the first switch SA1 and the second switch SA2 at the same time, that is, the first switch SA1 is changed to the normally closed state, and the second switch SA2 is changed to the normally open state. The first state switching button SA can control whether the current flowing to the impedance analyzer flows through the second end of the first coil L1 or the second coil L2.

[0035] The self-locking normally open and normally closed switch of the present invention helps an impedance analyzer to more accurately measure the inductance and resistance of a device, thereby improving the accuracy of the test, greatly simplifying the test process, and improving the test efficiency.

[0036] It should be noted that the initial state is a state when the measurement auxiliary device of the magnetic coupling mechanism of the present invention is not used.

[0037] Further, in some embodiments of the present invention, the self-locking two normally open and two normally closed switch includes: a third switch SB1, one end of the third switch SB1 is electrically connected to the second end of the first coil L1, and the other end of the third switch SB1 is electrically connected to the second end of the second coil L2; a fourth switch SB2, one end of the fourth switch SB2 is electrically connected to the second end of the first coil L1, and the other end of the fourth switch SB2 is electrically connected to the first end of the second coil L2; a fifth switch SB3, one end of the fifth switch SB3 is electrically connected to the first end of the second coil L2, and the other end of the fifth switch SB3 is electrically connected to one end of the second switch SB2; a sixth switch SB4, one end of the sixth switch SB4 is electrically connected to the second end of the second coil L2 The second end is electrically connected, and the other end of the sixth switch SB4 is electrically connected to one end of the second switch SA2; the second state switching button SB, the second state switching button is electrically connected to the third switch SB1, the second state switching button SB is electrically connected to the fourth switch SB2, the second state switching button SB is electrically connected to the fifth switch SB3, and the second state switching button SB is electrically connected to the sixth switch SB4; wherein, in the initial state, the third switch SB1 and the fifth switch SB3 are both in the normally open state, the fourth switch SB2 and the sixth switch SB4 are both in the normally closed state, and the second state switching button SB is used to simultaneously switch the states of the third switch SB1, the fourth switch SB2, the fifth switch SB3 and the sixth switch SB4.

[0038] In this embodiment, the self-locking two normally open and two normally closed switch includes a third switch SB1, a fourth switch SB2, a fifth switch SB3, a sixth switch SB4 and a second state switching button SB.

[0039] Among them, one end of the third switch SB1 is electrically connected to the second end of the first coil L1, the other end of the third switch SB1 is electrically connected to the second end of the second coil L2, one end of the fourth switch SB2 is electrically connected to the second end of the first coil L1, the other end of the fourth switch SB2 is electrically connected to the first end of the second coil L2, one end of the fifth switch SB3 is electrically connected to the first end of the second coil L2, the other end of the fifth switch SB3 is electrically connected to one end of the second switch SA2, one end of the sixth switch SB4 is electrically connected to the second end of the second coil L2, the other end of the sixth switch SB4 is electrically connected to one end of the second switch SA2, the second state switching button SB is electrically connected to the third switch SB1, the second state switching button SB is electrically connected to the fourth switch SB2, the second state switching button SB is electrically connected to the fifth switch SB3, and the second state switching button SB is electrically connected to the sixth switch SB4.

[0040] In the initial state, the third switch SB1 and the fifth switch SB3 are both in the normally open state, and the fourth switch SB2 and the sixth switch SB4 are both in the normally closed state. When the self-locking two normally open and two normally closed switches are working, the states of the third switch SB1, the fourth switch SB2, the fifth switch SB3 and the sixth switch SB4 are switched simultaneously by the second state switching button SB, that is, the third switch SB1 and the fifth switch SB3 are both changed to the normally closed state, and the fourth switch SB2 and the sixth switch SB4 are both changed to the normally open state. The second state switching button SB can control whether the current flows in through the first end of the second coil L2 and flows out through the second end of the second coil L2, or controls the current to flow in through the second end of the second coil L2 and flow out through the first end of the second coil L2.

[0041] Through the self-locking two normally open and two normally closed switches, the change from positive series to reverse series or reverse series to positive series of the second coil L2 can be achieved without human intervention, thereby improving the accuracy and reliability of the test, simplifying the operation process, reducing the possibility of human errors, and improving test efficiency.

[0042] Specifically, the controller is electrically connected to the first state switch button, the controller is electrically connected to the second state switch button, the controller is used to trigger the first state switch button, and the controller is used to trigger the second state switch button.

[0043] Preferably, the controller is a relay.

[0044] like Figure 3 As shown, the second aspect of the present invention provides a method for measuring a magnetic coupling mechanism, which is used in a measurement auxiliary device for a magnetic coupling mechanism as in any of the above embodiments, comprising: Step 102, obtaining a first inductance value and a resistance value of the magnetic coupling mechanism in an initial state; Step 104, changing the state of the self-locking two normally open and two normally closed switches to obtain a second sense value in the current state; Step 106, obtaining a mutual inductance value between the first coil L1 and the second coil L2 based on the first inductance value and the second inductance value; Step 108, resetting the logic switch device to an initial state, changing the state of the self-locking normally open and normally closed switch, and obtaining the inductance value of the first coil L1 and the resistance value of the first coil L1; Step 110, obtaining the inductance value of the second coil L2 based on the first inductance value, the mutual inductance value and the inductance value of the first coil L1; Step 112 , obtaining the resistance value of the second coil L2 based on the resistance value of the magnetic coupling mechanism and the resistance value of the first coil L1 .

[0045] The invention provides a measurement method of a magnetic coupling mechanism, which is used for a measurement auxiliary device of the magnetic coupling mechanism.

[0046] First, the first inductance value of the measurement auxiliary device of the magnetic coupling mechanism and the resistance value of the magnetic coupling mechanism in the initial state are obtained, that is, the first switch SA1, the third switch SB1 and the fifth switch SB3 are all in the normally open state, and the second switch SA2, the fourth switch SB2 and the sixth switch SB4 are all in the normally closed state.

[0047] In this state, the current flows into the first end of the first coil L1 through the first end of the impedance analyzer, and the current flows out from the other end of the first coil L1 after going around the first coil L1. At this time, because the first switch SA1 is in the normally open state, the current does not flow to the second end of the impedance analyzer, but flows into the first end of the second coil L2 based on the normally closed state of the fourth switch SB2 and the sixth switch SB4, flows out to the second end of the second coil L2, and flows into the second end of the impedance analyzer through the normally closed second switch SA2. The impedance analyzer detects and obtains the first inductance value and the resistance value of the magnetic coupling mechanism in the initial state.

[0048] Then, the state of the two normally open and two normally closed self-locking switches is changed, that is, the third switch SB1 and the fifth switch SB3 are changed to the normally closed state, and the fourth switch SB2 and the sixth switch SB4 are changed to the normally open state. Because the state of the first switch SA1 has not changed, the current still flows into the first end of the first coil L1 through the first end of the impedance analyzer, and the current flows out from the other end of the first coil L1 after a circle around the first coil L1. At this time, based on the fact that the third switch SB1 and the fifth switch SB3 are normally closed, the current flows into the second end of the second coil L2, flows out to the first end of the second coil L2, and then passes through the normally closed second switch SA2, and flows into the second end of the impedance analyzer. The impedance analyzer detects and obtains the second inductance value in the current state.

[0049] Then, the mutual inductance value of the first coil L1 and the second coil L2 is calculated based on the first inductance value and the second inductance value. The calculation formula is .in, is the mutual inductance between the first coil L1 and the second coil L2, is the first sense value in the initial state, It is the second sense value in the current state.

[0050] On this basis, the logic switch device is reset to the initial state, that is, the first switch SA1, the third switch SB1 and the fifth switch SB3 are all in the normally open state, and the second switch SA2, the fourth switch SB2 and the sixth switch SB4 are all in the normally closed state. The state of the self-locking normally open and normally closed switch is changed, that is, the first switch SA1 is changed to the normally closed state, and the second switch SA2 is changed to the normally open state. At this time, because the second switch SA2 is in the normally open state, any current flowing in through the first end of the impedance analyzer will not flow into the second coil L2. At the same time, because the first switch SA1 is in the normally closed state, the current flowing into the first end of the impedance analyzer will flow out directly through the second end of the first coil L1 after winding around the first coil L1. Then, this is equivalent to the impedance analyzer directly detecting the first coil L1. Therefore, the impedance analyzer detects and obtains the inductance value and resistance value of the first coil L1.

[0051] At this time, all the required parameters are complete. Then, based on the above steps and measurement results, the inductance value of the second coil L2 is obtained based on the first inductance value, the mutual inductance value and the inductance value of the first coil L1. Among them, the calculation formula of the inductance value of the second coil L2 is: .in, is the inductance of the second coil L2, is the inductance of the first coil L1.

[0052] Furthermore, the resistance value of the second coil L2 can also be obtained based on the resistance value of the magnetic coupling mechanism and the resistance value of the first coil L1. The calculation formula of the resistance value of the second coil L2 is: .in, is the resistance value of the second coil L2, is the resistance value of the magnetic coupling mechanism, is the resistance value of the first resistor.

[0053] Through the above method, different test schemes can be quickly switched without manually changing the test points, thereby realizing fast, accurate and batch measurement of self-inductance, internal resistance and mutual inductance of the magnetic coupling mechanism of the dual-coil mechanism, improving the test speed, reducing the test cost, avoiding human errors and improving the reliability of the measurement results.

[0054] In the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limiting the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0055] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A measurement auxiliary device for a magnetic coupling mechanism, characterized in that: include: Magnetic coupling mechanism; A logic switch device, wherein the logic switch device is provided with an electrical connection to the magnetic coupling mechanism; An impedance analyzer, the impedance analyzer is electrically connected to the logic switch device, and the impedance analyzer is used to measure the mutual inductance and resistance of the magnetic coupling mechanism; Wherein, the logic switch device is used to control the on and off of the magnetic coupling mechanism and the impedance analyzer.

2. The measurement auxiliary device of the magnetic coupling mechanism according to claim 1, characterized in that: The magnetic coupling mechanism comprises: A first coil L1, wherein a first end of the first coil L1 is electrically connected to a first end of the logic switch device, and a second end of the first coil L1 is electrically connected to a second end of the logic switch device; a second coil L2, wherein a first end of the second coil L2 is electrically connected to a third end of the logic switch device, and a second end of the second coil L2 is electrically connected to a fourth end of the logic switch device; Wherein, the first end of the logic switch device is electrically connected to the first end of the impedance analyzer.

3. The measurement auxiliary device of the magnetic coupling mechanism according to claim 2, characterized in that: The logic switch device comprises: a self-locking normally open normally closed switch, wherein a first end of the self-locking normally open normally closed switch is connected to a second end of the first coil L1 of the first coil L1, and a second end of the self-locking normally open normally closed switch is electrically connected to a second end of the impedance analyzer; A self-locking two normally open and two normally closed switch, wherein a first end of the self-locking two normally open and two normally closed switch is connected to a second end of the first coil L1, and the self-locking two normally open and two normally closed switch is electrically connected to the second coil L2; Among them, the third end of the self-locking normally open and normally closed switch is electrically connected to the third end of the self-locking two normally open and two normally closed switch, the self-locking two normally open and two normally closed switches are used to control the current flow direction to the second coil L2, and the self-locking normally open and normally closed switch is used to control the current flow direction to the impedance analyzer.

4. The measurement auxiliary device of the magnetic coupling mechanism according to claim 3, characterized in that: The self-locking normally open normally closed switch comprises: a first switch SA1, wherein one end of the first switch SA1 is electrically connected to the second end of the first coil L1, and the other end of the first switch SA1 is electrically connected to the second end of the impedance analyzer; A second switch SA2, one end of the second switch SA2 is electrically connected to the self-locking normally open and normally closed switch SA, and the other end of the second switch SA2 is electrically connected to the second end of the impedance analyzer; A first state switching button SA, wherein the first state switching button SA is electrically connected to the first switch SA1, and the first state switching button SA is electrically connected to the second switch SA2; In the initial state, the first switch SA1 is in a normally open state, the second switch SA2 is in a normally closed state, and the first state switching button SA is used to simultaneously switch the states of the first switch SA1 and the second switch SA2.

5. The measurement auxiliary device of the magnetic coupling mechanism according to claim 4, characterized in that: The self-locking two normally open and two normally closed switch comprises: a third switch SB1, one end of the third switch SB1 is electrically connected to the second end of the first coil L1, and the other end of the third switch SB1 is electrically connected to the second end of the second coil L2; a fourth switch SB2, wherein one end of the fourth switch SB2 is electrically connected to the second end of the first coil L1, and the other end of the fourth switch SB2 is electrically connected to the first end of the second coil L2; a fifth switch SB3, wherein one end of the fifth switch SB3 is electrically connected to the first end of the second coil L2, and the other end of the fifth switch SB3 is electrically connected to one end of the second switch SA2; a sixth switch SB4, wherein one end of the sixth switch SB4 is electrically connected to the second end of the second coil L2, and the other end of the sixth switch SB4 is electrically connected to one end of the second switch SA2; a second state switching button SB, wherein the second state switching button SB is electrically connected to the third switch SB1, the second state switching button SB is electrically connected to the fourth switch SB2, the second state switching button SB is electrically connected to the fifth switch SB3, and the second state switching button SB is electrically connected to the sixth switch SB4; Among them, in the initial state, the third switch SB1 and the fifth switch SB3 are both in the normally open state, the fourth switch SB2 and the sixth switch SB4 are both in the normally closed state, and the second state switching button SB is used to simultaneously switch the states of the third switch SB1, the fourth switch SB2, the fifth switch SB3 and the sixth switch SB4.

6. A method for measuring a magnetic coupling mechanism, used for the measurement auxiliary device for a magnetic coupling mechanism as claimed in claim 5, characterized in that: include: Acquire a first inductance value and a resistance value of the magnetic coupling mechanism in an initial state; Change the state of the self-locking two normally open and two normally closed switches to obtain the second sense value in the current state; Based on the first inductance value and the second inductance value, obtaining the mutual inductance value of the first coil L1 and the second coil L2; Reset the logic switch device to an initial state, change the state of the self-locking normally open and normally closed switch, and obtain the inductance value of the first coil L1 and the resistance value of the first coil L1; Based on the first inductance value, the mutual inductance value and the inductance value of the first coil L1, the inductance value of the second coil L2 is obtained; The resistance value of the second coil L2 is acquired based on the resistance value of the magnetic coupling mechanism and the resistance value of the first coil L1 .

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