CN112924754A - Wireless charging coil coupling test platform - Google Patents
Wireless charging coil coupling test platform Download PDFInfo
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- CN112924754A CN112924754A CN202110074467.0A CN202110074467A CN112924754A CN 112924754 A CN112924754 A CN 112924754A CN 202110074467 A CN202110074467 A CN 202110074467A CN 112924754 A CN112924754 A CN 112924754A
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- 238000012360 testing method Methods 0.000 title claims abstract description 80
- 230000008878 coupling Effects 0.000 title claims abstract description 37
- 238000010168 coupling process Methods 0.000 title claims abstract description 37
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000033001 locomotion Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000012795 verification Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
Abstract
The invention provides a wireless charging coil coupling test platform, which comprises: the system comprises a three-axis platform, an open-short circuit controller, a collection unit and a control unit; the triaxial rack includes: the upper platform is driven by the Z-axis moving mechanism to perform lifting motion, the lower platform is driven by the XY-axis moving mechanism to perform translational motion relative to the upper platform, the open-short circuit controller and the acquisition unit are integrated on the three-axis rack, the acquisition unit acquires electrical parameters of the wireless charging coil through the open-short circuit controller, and the control unit and the acquisition unit perform data transmission and control the motion of the three-axis rack. According to the wireless charging coil coupling test platform, the test position of the wireless charging coil can be adjusted through the three-axis platform, and the requirements of complicated test items and repeatability verification in the actual test process are met. Meanwhile, the open-short circuit controller can control the wireless charging coil to test various parameters under the open-circuit or short-circuit condition.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to a wireless charging coil coupling test platform.
Background
With the popularization of new energy vehicles in the national important plans, the wireless charging technology is also popularized with the rapid development of the electric vehicle industry. Meanwhile, in the field of wired charging of electric automobiles, the wired charging pile has the problems of large occupied area, complex operation, high wear rate and the like. Therefore, the wireless charging technology is of great significance in realizing charging of the electric automobile.
The wireless charging of the electric automobile is used as a novel charging technology, has the advantages of convenience and rapidness, at present, the development of the wireless charging technology is accelerated in all countries in the world, and is in the early stage of industrial outbreak, and a large amount of rigorous tests and researches need to be carried out on the wireless charging technology indexes.
The test of the coupling parameters of the high-power wireless charging coil is an important condition for researching the wireless charging conversion efficiency EFF, and is also an important basis for judging whether the wireless charging ground end and the vehicle end meet the requirements before mass production. The high-power wireless charging coil needs the position of the ground end and the vehicle end in the direction of the X, Y, Z axis to be continuously changed to test the coupling parameters, so that a desired test result is obtained in the test process. Therefore, the demand for high power wireless charging coil coupling test is increasing, and further solution is necessary to solve the above problems.
Disclosure of Invention
The invention aims to provide a wireless charging coil coupling test platform to overcome the defects in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a wireless charging coil coupling test platform, comprising: the system comprises a three-axis platform, an open-short circuit controller, a collection unit and a control unit;
the three-axis gantry includes: the device comprises an upper platform, a lower platform, a Z-axis moving mechanism and an XY-axis moving mechanism, wherein the upper platform is driven by the Z-axis moving mechanism to perform lifting motion, the lower platform is driven by the XY-axis moving mechanism to perform translational motion relative to the upper platform, an open short circuit controller and an acquisition unit are integrated on a three-axis rack, the acquisition unit acquires electrical parameters of a wireless charging coil through the open short circuit controller, and the control unit and the acquisition unit perform data transmission and control the motion of the three-axis rack.
As an improvement of the wireless charging coil coupling test platform, the Z-axis moving mechanism is a lifting cylinder, and the lifting cylinder is connected with the upper platform through a connecting plate.
As an improvement of the wireless charging coil coupling test platform, the upper platform is driven by the Z-axis moving mechanism to perform lifting motion within the range of 140-210mm in the Z-axis direction.
As an improvement of the wireless charging coil coupling test platform, the XY axis moving mechanism comprises: the X-axis linear motor and the Y-axis linear motor are arranged on the lower platform, the lower platform is driven by the X-axis linear motor to move, and the X-axis linear motor and the lower platform are integrally driven by the Y-axis linear motor to move.
As an improvement of the wireless charging coil coupling test platform, the lower platform is driven by the XY axis moving mechanism to perform translational motion within a range of +/-75 mm in the X axis direction and within +/-100 mm in the Y axis direction.
As an improvement of the wireless charging coil coupling test platform of the present invention, the open-short circuit controller comprises: a switch S1 capable of being connected to a vehicle-end wireless charging coil, a switch S2 capable of being connected to a ground-end wireless charging coil, a switch S3 and a switch S5 respectively connected with a first terminal of the acquisition unit, and a switch S4 and a switch S6 respectively connected with a second terminal of the acquisition unit;
the switch S1 has a first contact, a second contact and a third contact, the switch S2 has a fourth contact, a fifth contact and a sixth contact, the first contact and the fourth contact are self-closing contacts, the second contact can be in contact with the switch S3, the third contact can be in contact with the switch S4, the fifth contact can be in contact with the switch S5, and the sixth contact can be in contact with the switch S6.
As an improvement of the wireless charging coil coupling test platform of the present invention,
when the wireless charging coil at the test vehicle end is short-circuited, the switch S1/S5/S6 is closed, and the switch S2/S3/S4 is opened;
when the wireless charging coil at the test vehicle end is open-circuited, the switch S5/S6 is closed, and the switch S1/S2/S3/S4 is opened;
when the wireless charging coil at the test ground end is short-circuited, the switch S1/S5/S6 is switched off, and the switch S2/S3/S4 is switched on;
when the test ground terminal wireless charging coil is open-circuit, the switch S1/S2/S5/S6 is open, and the switch S3/S4 is closed.
As an improvement of the wireless charging coil coupling test platform, the acquisition unit is an LCR tester.
As an improvement of the wireless charging coil coupling test platform, the three-axis platform, the open-short circuit controller and the acquisition unit are connected with the control unit through RS232 lines.
As an improvement of the wireless charging coil coupling test platform, the control unit is a computer.
Compared with the prior art, the invention has the beneficial effects that: according to the wireless charging coil coupling test platform, the test position of the wireless charging coil can be adjusted through the three-axis platform, and the requirements of complicated test items and repeatability verification in the actual test process are met. Meanwhile, the open-short circuit controller can be used for controlling the testing of various parameters of the quality factor Q, the inductance Ls, the alternating current resistance Rac and the direct current resistance Rdc of the wireless charging coil under the condition of open circuit or short circuit, and the wireless charging coil testing device has the advantages of convenience in operation, intuitional adjustment, simplicity in testing and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a wireless charging coil coupling test platform according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a triaxial stage of the wireless charging coil coupling test platform according to the present invention;
fig. 3 to 6 are schematic diagrams illustrating the opening and closing of the switches S1 to S6 when the wireless charging coil coupling test platform of the present invention is in operation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides a wireless charging coil coupling test platform, which includes: open short circuit controller 1, acquisition unit 2, triaxial rack 3 and control unit 4.
The triaxial rack 3 is used for adjusting the test position of the wireless charging coil, and meets the requirements of complicated and repeatability verification of each test item in the actual test process.
Specifically, the three-axis stage 3 includes: an upper stage 31, a lower stage 32, a Z-axis moving mechanism 33, and an XY-axis moving mechanism 34. Wherein, upper platform 31 is used for placing the wireless charging coil of car end, and lower platform 32 is used for placing the wireless charging coil of ground end. The upper stage 31 may be disposed above the lower stage 32, the upper stage 31 is driven by a Z-axis moving mechanism 33 to perform an up-and-down motion, and the lower stage 32 is driven by an XY-axis moving mechanism 34 to perform a translational motion with respect to the upper stage 31. Therefore, the coupling position of the ground end and the vehicle end wireless charging coil can be adjusted through the three-axis rack 3, and the requirements of complicated and repeatability verification of each test item in the actual test process are met.
The Z-axis moving mechanism 33 is specifically a lifting cylinder, which is connected to the upper platform 31 via a connecting plate, and the lifting cylinder is connected to the frame body of the three-axis table frame 3. Therefore, the lifting air cylinder can drive the lifting platform to synchronously lift through the connecting plate during working. Meanwhile, in order to ensure the stability of the movement of the upper platform 31, a guide shaft is further arranged between the connecting plate and the frame body of the three-axis rack 3. In one embodiment of the lifting stroke, the upper platform 31 is driven by the Z-axis moving mechanism 33 to perform the lifting motion within the range of 140 mm and 210mm in the Z-axis direction.
The XY-axis moving mechanism 34 may be disposed at the bottom of the frame body of the three-axis gantry 3, and specifically includes: an X-axis linear motor 341 and a Y-axis linear motor 342. The lower platform 32 is driven by the X-axis linear motor 341 to move, and the X-axis linear motor 341 and the lower platform 32 are integrally driven by the Y-axis linear motor 342 to move. In this way, the lower platform 32 can be driven to translate in the plane by the driving of the X-axis linear motor 341 and the Y-axis linear motor 342, so as to adjust the relative coupling position between the upper platform 31 and the lower platform 32. In one embodiment of planar adjustment travel, the lower platen 32 is moved in translation within + -75 mm in the X-axis direction and within + -100 mm in the Y-axis direction by the XY-axis moving mechanism 34.
The open-short circuit controller 1 is used for controlling the open circuit or the short circuit of the test circuit during the test, so as to test various parameters of the wireless charging coil under the condition of open circuit or short circuit.
Specifically, open short circuit controller 1 and integrate on triaxial rack 3, and acquisition unit 2 gathers wireless charging coil's electrical parameter through open short circuit controller 1. In order to realize switching between open circuit and short circuit, the open-short circuit controller 1 includes: a switch S1 capable of being connected to a vehicle-end wireless charging coil, a switch S2 capable of being connected to a ground-end wireless charging coil, a switch S3 and a switch S5 which are respectively connected with a first terminal of the acquisition unit, and a switch S4 and a switch S6 which are respectively connected with a second terminal of the acquisition unit;
the switch S1 has a first contact, a second contact and a third contact, the switch S2 has a fourth contact, a fifth contact and a sixth contact, the first contact and the fourth contact are self-closing contacts, the second contact can be in contact with the switch S3, the third contact can be in contact with the switch S4, the fifth contact can be in contact with the switch S5, and the sixth contact can be in contact with the switch S6.
The open/short circuit controller 1 based on the above circuit structure can switch between open circuit and short circuit according to the following open/close method of the switch group:
1) when the wireless charging coil (VA) at the test vehicle end is short-circuited, the switch S1/S5/S6 is closed, and the switch S2/S3/S4 is opened;
2) when a wireless charging coil (VA) at the test vehicle end is open-circuited, the switch S5/S6 is closed, and the switch S1/S2/S3/S4 is disconnected;
3) when the wireless charging coil (GA) at the test ground end is short-circuited, the switch S1/S5/S6 is switched off, and the switch S2/S3/S4 is switched on;
4) and when the wireless charging coil (GA) at the test ground end is open, the switches S1/S2/S5/S6 are switched off, and the switches S3/S4 are switched on.
The acquisition unit 2 can automatically acquire various electrical parameters of quality factors Q, inductance Ls, alternating current resistance Rac and direct current resistance Rdc of the vehicle end and ground end coils, is integrated on the three-axis rack 3, and is connected with the ground end and vehicle end wireless charging coils through the open-short circuit controller 1 so as to test various parameters of the wireless charging coils under the condition of open circuit or short circuit.
In one embodiment, the collection unit 2 is an LCR tester, and the LCR tester collects the electrical parameters of the wireless charging coil synchronously with the movement of the upper platform 31 and/or the lower platform 32. For the storage of the electrical parameter data, the acquisition unit 2 is in data transmission with the control unit 4 through an RS232 line.
The control unit 4 is in data transmission with the acquisition unit 2 and controls the movement of the three-axis stand 3. In one embodiment, the control unit 4 may be a computer, which is connected to the open-short circuit controller 1, the acquisition unit 2, and the three-axis gantry 3 through RS232 lines.
As shown in fig. 3 to 6, when the wireless charging coil coupling test platform of the present invention works:
s1, connecting the LCR tester, the three-axis rack and the open-short circuit controller to a computer through an RS-232 line;
s2, setting the position point of the three-axis moving rack and the action mode of the open-short circuit controller through a computer;
s3, when the wireless charging coil (VA) at the test vehicle end is short-circuited, the switch S1/S5/S6 is closed, and the switch S2/S3/S4 is opened; when a wireless charging coil (VA) at the test vehicle end is open-circuited, the switch S5/S6 is closed, and the switch S1/S2/S3/S4 is disconnected; when a wireless charging coil (GA) at a test ground end is short-circuited, the switch S1/S5/S6 is switched off, and the switch S2/S3/S4 is switched on; when a wireless charging coil (GA) at a test ground end is open, the switch S1/S2/S5/S6 is disconnected, and the switch S3/S4 is closed;
s4, moving the three-axis rack to a set position, operating the open-short circuit controller according to the set action, and reading and recording data of the LCR tester by the computer through RS-232;
and S5, after the test is finished, data reports can be sequentially generated, and the data can be traced and stored.
In conclusion, the wireless charging coil coupling test platform can realize the adjustment of the test position of the wireless charging coil through the three-axis platform, and meets the requirements of complicated test items and repeatability verification in the actual test process. Meanwhile, the open-short circuit controller can be used for controlling the testing of various parameters of the quality factor Q, the inductance Ls, the alternating current resistance Rac and the direct current resistance Rdc of the wireless charging coil under the condition of open circuit or short circuit, and the wireless charging coil testing device has the advantages of convenience in operation, intuitional adjustment, simplicity in testing and the like.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A wireless charging coil coupling test platform, characterized in that, wireless charging coil coupling test platform includes: the system comprises a three-axis platform, an open-short circuit controller, a collection unit and a control unit;
the three-axis gantry includes: the device comprises an upper platform, a lower platform, a Z-axis moving mechanism and an XY-axis moving mechanism, wherein the upper platform is driven by the Z-axis moving mechanism to perform lifting motion, the lower platform is driven by the XY-axis moving mechanism to perform translational motion relative to the upper platform, an open short circuit controller and an acquisition unit are integrated on a three-axis rack, the acquisition unit acquires electrical parameters of a wireless charging coil through the open short circuit controller, and the control unit and the acquisition unit perform data transmission and control the motion of the three-axis rack.
2. The platform of claim 1, wherein the Z-axis moving mechanism is a lifting cylinder, and the lifting cylinder is connected to the upper platform through a connecting plate.
3. The platform of claim 1 or 2, wherein the upper platform is driven by the Z-axis moving mechanism to move up and down within a range of 140 mm and 210mm in the Z-axis direction.
4. The wireless charging coil coupling test platform of claim 1, wherein the XY axis movement mechanism comprises: the X-axis linear motor and the Y-axis linear motor are arranged on the lower platform, the lower platform is driven by the X-axis linear motor to move, and the X-axis linear motor and the lower platform are integrally driven by the Y-axis linear motor to move.
5. The wireless charging coil coupling test platform of claim 1 or 4, wherein the lower platform is driven by the XY axis moving mechanism to perform translational motion within a range of + -75 mm in the X axis direction and within + -100 mm in the Y axis direction.
6. The wireless charging coil coupling test platform of claim 1, wherein the open-short controller comprises: a switch S1 capable of being connected to a vehicle-end wireless charging coil, a switch S2 capable of being connected to a ground-end wireless charging coil, a switch S3 and a switch S5 respectively connected with a first terminal of the acquisition unit, and a switch S4 and a switch S6 respectively connected with a second terminal of the acquisition unit;
the switch S1 has a first contact, a second contact and a third contact, the switch S2 has a fourth contact, a fifth contact and a sixth contact, the first contact and the fourth contact are self-closing contacts, the second contact can be in contact with the switch S3, the third contact can be in contact with the switch S4, the fifth contact can be in contact with the switch S5, and the sixth contact can be in contact with the switch S6.
7. The wireless charging coil coupling test platform of claim 6,
when the VA of the wireless charging coil at the test vehicle end is short-circuited, the switch S1/S5/S6 is closed, and the switch S2/S3/S4 is opened;
when the VA of the wireless charging coil at the test vehicle end is open, the switch S5/S6 is closed, and the switch S1/S2/S3/S4 is disconnected;
when the wireless charging coil GA at the test ground end is short-circuited, the switch S1/S5/S6 is switched off, and the switch S2/S3/S4 is switched on;
when the wireless charging coil GA at the test ground end is open, the switches S1/S2/S5/S6 are disconnected, and the switches S3/S4 are closed.
8. The wireless charging coil coupling test platform of claim 1, wherein the acquisition unit is an LCR tester.
9. The wireless charging coil coupling test platform of claim 1 or 8, wherein the triaxial platform, the open-short circuit controller and the acquisition unit are connected with the control unit through RS232 lines.
10. The wireless charging coil coupling test platform of claim 1, wherein the control unit is a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074467.0A CN112924754A (en) | 2021-01-20 | 2021-01-20 | Wireless charging coil coupling test platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110074467.0A CN112924754A (en) | 2021-01-20 | 2021-01-20 | Wireless charging coil coupling test platform |
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| WO2019091580A1 (en) * | 2017-11-13 | 2019-05-16 | Epcos Schweiz Gmbh | Dynamic transmission coil positioning system, wireless power transfer system and method of positioning a transmit coil |
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