CN109444769B - Test method and system for wireless charging equipment - Google Patents
Test method and system for wireless charging equipment Download PDFInfo
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- CN109444769B CN109444769B CN201811319728.5A CN201811319728A CN109444769B CN 109444769 B CN109444769 B CN 109444769B CN 201811319728 A CN201811319728 A CN 201811319728A CN 109444769 B CN109444769 B CN 109444769B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a method and a system for testing wireless charging equipment, wherein the method comprises the following steps: providing current for a product to be measured, and measuring the magnetic flux of the product to be measured by using gauge equipment; changing the position of the gauge equipment, testing the magnetic flux of the product to be tested at each position point, and when the gauge equipment moves in a set range and the magnetic flux of the product to be tested is in a standard magnetic flux range, considering that the test requirement is met, otherwise, considering that the test requirement is not met. The method is simple, and effectively avoids potential safety hazards.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to a method and a system for testing wireless charging equipment.
Background
The wireless charging technology becomes a new energy technology concerned by various large electric automobile manufacturers at present due to the characteristics of convenience, safety and the like. The system energy takes a power grid as a starting point, and high-frequency alternating current is obtained in a coil through rectification and high-frequency inversion, so that wireless transmission of energy is realized by utilizing an excited magnetic field.
The interoperability problem is one of the important problems facing the industrialization of the wireless charging of the electric automobile. The interoperability of the wireless charging system for the electric vehicle can be understood as the output characteristic of the charging system when the energy transmitting and receiving coil structures are different and the energy transmitting and receiving end compensation topologies are different. The wireless charging system of the electric automobile has interoperability, which means that when the energy transmitting coil and the energy receiving coil have different structures and the energy transmitting and receiving end compensation topologies are different, the output of the charging system meets a certain limit value. Square, DD-type, DDQ-type and solenoid-type coils mainly exist in the market at the present stage, and compensation topologies such as series connection, parallel connection, LCC and the like exist. When the coil and the compensation topology cooperatively form a transmission mechanism, the interoperability difference caused by the difference of the coil and the topology structure cannot ensure the normal operation of the charging system. As a result of the above, once the wireless charging product is in the market promotion stage, the product without interoperability with most products will gradually be in competitive disadvantage, and finally be eliminated from the market. In order to ensure interoperability among products, related testing organizations need to carry out extensive tests on the products, but the prior art has the problem that the prior art is difficult to solve.
The principle of the existing testing method is to perform interactive testing on all products, and in order to finally form a standard covering products in the whole industry, cross testing needs to be performed on power efficiency when primary side equipment (GA) and secondary side equipment (VA) of all products are operated mutually. Obviously, the test workload is huge and products of different manufacturers are not easy to obtain; moreover, a strong current working state must be kept constantly during testing, so that certain potential safety hazards exist; in addition, the existing test method directly evaluates interoperability through transmission power and efficiency, and because the existing method takes all test product pairs as a two-port network, the power efficiency can only describe the overall characteristics of the two-port network, and the influence of different parameters in the product on interoperability is difficult to express through the method, so that the optimization design of the product cannot be guided.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the problems of complex test method and potential safety hazard in the prior art, so as to provide a test method and system for wireless charging equipment, which is simple and avoids potential safety hazard.
In order to solve the above technical problem, a method for testing a wireless charging device according to the present invention includes the following steps: providing current for a product to be measured, and measuring the magnetic flux of the product to be measured by using gauge equipment; changing the position of the gauge equipment, testing the magnetic flux of the product to be tested at each position point, and when the gauge equipment moves in a set range and the magnetic flux of the product to be tested is in a standard magnetic flux range, considering that the test requirement is met, otherwise, considering that the test requirement is not met.
In one embodiment of the invention, said gauge apparatus is comprised of a plurality of sets of coil nests.
In one embodiment of the invention, the coil is square or circular in shape.
In one embodiment of the present invention, before the step S1, the method further comprises selecting a reference device and the gauge device, wherein the reference device is a transmitting coil and the gauge device is a receiving coil, and determining a standard magnetic flux range between the reference device and the gauge device.
In one embodiment of the invention, the method of determining the standard magnetic flux range between the reference device and the gauge device is: selecting a set value according to a standard or calculating a magnetic flux when the reference device and the gauge device are matched with each other.
In one embodiment of the invention, interoperability is deemed to be satisfied when the magnetic fluxes of the products to be tested are all within the standard magnetic flux range, and otherwise, interoperability is deemed to be not satisfied.
In one embodiment of the invention, the product to be tested is connected to a power source, and the gauge apparatus is connected to a load through a power electronic converter.
In one embodiment of the invention, the power electronic converter is a capacitor and the load is a resistor.
In an embodiment of the present invention, a voltage value of a product to be tested is obtained according to the capacitor and the resistor, and a magnetic flux of the product to be tested is obtained from the voltage value.
The invention also provides a test system of the wireless charging equipment, which comprises a measurement changing module, wherein the measurement changing module is used for measuring the magnetic flux of the product to be tested by using the gauge equipment when the current is provided for the product to be tested, changing the position of the gauge equipment, testing the magnetic flux of the product to be tested at each position point, and when the gauge equipment moves in a set range and the magnetic flux of the product to be tested is in a standard magnetic flux range, the test requirement is considered to be met, otherwise, the test requirement is considered not to be met.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the testing method and system of the wireless charging equipment, the magnetic flux of the product to be tested is measured through the gauge equipment, so that the testing workload is greatly reduced, and the problem that the existing testing method is lack of testing reference is solved; in addition, a strong current working state is not needed in the whole operation process, so that potential safety hazards are avoided.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
Fig. 1 is a flow chart of a testing method of a wireless charging device of the present invention;
FIG. 2 is a schematic diagram of the testing of the product under test of the present invention;
figure 3 is a schematic view of a gauge apparatus of the present invention.
Description of the drawings: 10-gauge equipment, 11-plate, 12-coil, 12A-first coil, 12B-second coil, 12C-third coil, 21-product to be tested, 22-power supply, 23-power electronic converter and 24-load.
Detailed Description
As shown in fig. 1 and fig. 2, the present embodiment provides a method for testing a wireless charging device, including the following steps: step S1: providing current to a product 21 to be measured, and measuring the magnetic flux of the product 21 to be measured by using the gauge equipment 10; step S2: changing the position of the gauge equipment 10, testing the magnetic flux of the product 21 to be tested at each position point, and when the gauge equipment 10 moves within a set range and the magnetic flux of the product 21 to be tested is within a standard magnetic flux range, determining that the test requirement is met, otherwise, determining that the test requirement is not met.
In the testing method of the wireless charging device in this embodiment, in step S1, a current is provided to a product 21 to be tested, the gauge device 10 is used to measure the magnetic flux of the product 21 to be tested, and the magnetic flux of the product 21 to be tested can be obtained by measuring the voltage of the product 21 to be tested; in the step S2, the position of the gauge device 10, specifically, the positions of the receiving coils in the X, Y, and Z directions are changed, and the magnetic flux of the product 21 to be tested is tested at each position point, when the gauge device 10 moves within a set range, the magnetic flux of the product 21 to be tested is within a standard magnetic flux range, the test requirement is considered to be met, otherwise, the test requirement is considered not to be met, and since the magnetic flux of the product 21 to be tested is measured by the gauge device 10, the test workload is not only greatly reduced, but also the problem that the existing test method lacks a test reference is solved; in addition, the whole operation process does not need a strong current working state, and the measurement can be carried out only through weak current, so that potential safety hazards are avoided.
Before the step S1, the method further comprises selecting a reference device and the gauge device 10, wherein the reference device is a transmitting coil, the gauge device 10 is a receiving coil, and determining a standard magnetic flux range between the reference device and the gauge device 10. Specifically, a reference device and a gauge device 10 are selected, the reference device is a transmitting coil, the gauge device 10 is a receiving coil, and a magnetic field can be generated through the transmitting coil and the receiving coil; the standard magnetic flux range between the reference device and the gauge device 10 is determined so as to advantageously serve as a criterion, avoiding blind cross-tests between different products.
As shown in fig. 2, the product 21 to be measured is connected to a power source 22 so as to facilitate the supply of current to the product 21 to be measured, and the gauge apparatus 10 is connected to a load 24 through a power electronic converter 23, the voltage of the product 21 to be measured can be effectively measured through the power electronic converter 23 and the load 24, and the magnetic flux of the product 21 to be measured can be measured through the voltage value. In particular, the power electronic converter 23 is a capacitor and the load 24 is a resistor. And obtaining a voltage value of a product to be detected according to the capacitor and the resistor, and obtaining the magnetic flux of the product to be detected 21 according to the voltage value.
As shown in fig. 3, in order to allow the gauge apparatus 10 to measure different types of products 21 to be measured, the gauge apparatus 10 is composed of multiple sets of nested coils, thereby facilitating the presentation of optimized indices of the products. Specifically, the gauge apparatus 10 includes a plate 11 and a plurality of coils 12 positioned on the plate 11, the coils 12 including: a first coil 12A, a second coil 12B and a third coil 12C, wherein the first coil 12A is located at the center of the plate 11, the first coil 12A is nested in the second coil 12B, and the second coil 12B is nested in the third coil 12C, so that different coils can be connected to different products 21 to be tested. The coil 12 is square or circular in shape, thereby facilitating the performance of the coil 12 and the area of the coil 12 to be large.
In this embodiment, the gauge device 10 may be a standard secondary coil in the existing international standard for wireless charging of electric vehicles. The reference equipment can select a standard primary coil in international standard or a standard primary coil specified in China. Additionally, the method of determining the standard magnetic flux range between the reference device and the gauge device 10 is: the set value is selected according to a standard or the magnetic flux calculated when the reference device is mated with the gauge device 10. And when the magnetic fluxes of the products to be tested 21 are all in the standard magnetic flux range, the interoperability is considered to be met, otherwise, the interoperability is considered not to be met.
Example two
As shown in fig. 2, the present embodiment provides a test system of a wireless charging device, including a measurement changing module, where the measurement changing module is configured to measure a magnetic flux of a product 21 to be tested by using the gauge device 10 when supplying a current to the product 21 to be tested, and change a position of the gauge device 10, test the magnetic flux of the product 21 to be tested at each position point, when the gauge device 10 moves within a set range, and the magnetic flux of the product 21 to be tested is within a standard magnetic flux range, the test requirement is considered to be met, otherwise, the test requirement is considered to be not met.
The test system of the wireless charging device in this embodiment includes a measurement changing module, where the measurement changing module is configured to measure the magnetic flux of the product 21 to be tested by using the gauge device 10 when supplying a current to the product 21 to be tested, change the position of the gauge device 10, and test the magnetic flux of the product 21 to be tested at each position point, when the gauge device 10 moves in a set range, and the magnetic flux of the product 21 to be tested is in the standard magnetic flux range, it is considered that the test requirement is met, otherwise, it is considered that the test requirement is not met, and because only the magnetic flux of the product 21 to be tested is measured, the test workload is greatly reduced; in addition, the magnetic flux of the product to be tested 21 is measured by the gauge device 10, so that the problem that the existing testing method lacks a testing reference is solved, and the whole operation does not need a strong electric working state, so that potential safety hazards are avoided.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Various other modifications and alterations will occur to those skilled in the art upon reading the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (5)
1. A test method of wireless charging equipment is characterized by comprising the following steps:
step S1: providing current for a product to be measured, and measuring the magnetic flux of the product to be measured by using gauge equipment; before the step S1, selecting a reference device and the gauge device, where the reference device is a transmitting coil and the gauge device is a receiving coil; and determining a standard magnetic flux range between the reference device and the gauge device by: selecting a set numerical value according to a standard or calculating magnetic flux when the reference equipment and the gauge equipment are matched with each other, connecting the product to be detected with a power supply, connecting the gauge equipment with a load through a power electronic converter, wherein the power electronic converter is a capacitor, the load is a resistor, obtaining a voltage value of the product to be detected according to the capacitor and the resistor, and obtaining the magnetic flux of the product to be detected according to the voltage value;
step S2: and changing the position of the gauge equipment, testing the magnetic flux of the product to be tested at each position point, and when the gauge equipment moves in a set range and the magnetic flux of the product to be tested is in a standard magnetic flux range, considering that the test requirement is met, otherwise, considering that the test requirement is not met.
2. The method for testing a wireless charging device according to claim 1, wherein: the gauge apparatus is comprised of a plurality of sets of coil nests.
3. The method for testing a wireless charging device according to claim 2, wherein: the shape of the coil is square or round.
4. The method for testing a wireless charging device according to claim 1, wherein: the reference equipment can select a standard primary coil in international standards or a standard primary coil specified in China.
5. A test system of wireless charging equipment, its characterized in that: the measuring and changing module is used for measuring the magnetic flux of a product to be measured by using gauge equipment when current is provided for the product to be measured, selecting reference equipment and the gauge equipment, wherein the reference equipment is a transmitting coil, and the gauge equipment is a receiving coil; and determining a standard magnetic flux range between the reference device and the gauge device, in determining a standard magnetic flux range between the reference device and the gauge device: selecting a set value according to a standard or calculating magnetic flux when the reference equipment and the gauge equipment are matched with each other, connecting the product to be tested with a power supply, connecting the gauge equipment with a load through a power electronic converter, wherein the power electronic converter is a capacitor, the load is a resistor, obtaining a voltage value of the product to be tested according to the capacitor and the resistor, obtaining the magnetic flux of the product to be tested according to the voltage value, changing the position of the gauge equipment, testing the magnetic flux of the product to be tested at each position point, considering that the testing requirement is met when the magnetic flux of the product to be tested is in a standard magnetic flux range when the gauge equipment moves in a set range, and considering that the testing requirement is not met otherwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811319728.5A CN109444769B (en) | 2018-11-07 | 2018-11-07 | Test method and system for wireless charging equipment |
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| CN201811319728.5A CN109444769B (en) | 2018-11-07 | 2018-11-07 | Test method and system for wireless charging equipment |
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| CN109444769B true CN109444769B (en) | 2023-01-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6019581B2 (en) * | 2011-12-26 | 2016-11-02 | ソニー株式会社 | Detection device, detection system, power transmission device, non-contact power transmission system, and detection method |
| US10666082B2 (en) * | 2014-06-20 | 2020-05-26 | Lg Electronics Inc. | Wireless power transfer method, apparatus and system |
| KR20160025200A (en) * | 2014-08-27 | 2016-03-08 | 현대자동차주식회사 | Wireless charging system and method thereof |
| US10414279B2 (en) * | 2014-12-19 | 2019-09-17 | Ford Global Technologies, Llc | Inductive wireless power transfer systems |
| US10132650B2 (en) * | 2015-01-22 | 2018-11-20 | Integrated Device Technology, Inc. | Apparatuses and related methods for detecting magnetic flux field characteristics with a wireless power transmitter |
| KR101764496B1 (en) * | 2015-11-02 | 2017-08-02 | 현대자동차주식회사 | Active rectifier for wireless power transfer system and vehicle assembly using same and operating method thereof |
| CN106026977B (en) * | 2016-03-24 | 2019-02-01 | 北京群菱能源科技有限公司 | A kind of alternating-current charging pile PWM signal generator for test |
| CN106597084B (en) * | 2016-12-12 | 2019-04-09 | 广州汽车集团股份有限公司 | The test macro of wireless charging system for electric automobile |
| CN107942144A (en) * | 2017-11-10 | 2018-04-20 | 中国电力科学研究院有限公司 | Electric automobile wireless charging electromagnetic field measuring system and method |
| CN108196142A (en) * | 2017-11-24 | 2018-06-22 | 国网北京市电力公司 | The detection method and device of charging pile |
| CN108063498A (en) * | 2017-11-27 | 2018-05-22 | 国网北京市电力公司 | Test system, the method and device of charge parameter |
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