The test method and system of wireless charging deviceTechnical field
The present invention relates to the technical field of wireless charging, refers in particular to a kind of test method of wireless charging device and beSystem.
Background technique
Wireless charging technology is because its becomes major electric car manufacturer concern at present the features such as convenient, safeNew energy technology.For system capacity using power grid as starting point, rectified and high-frequency inversion obtains high-frequency alternating current in coil, thusThe wireless transmission of energy is realized using the magnetic field of excitation.
Interoperability issue is one of the major issue that electric car wireless charging industrialization faces.Electric car wireless chargingThe interoperability of electric system can be regarded as when energy transmitting and receiving coil structure difference, energy transmitting and receiving end compensation topologyWhen different, the output characteristics of charging system.Wireless charging system for electric automobile has interoperability and refers to when energy transmitting and connectWhen take-up coil structures difference, energy transmitting are with receiving end compensation topology difference, the output of charging system meets certain limit value.It is existingStage is primarily present rectangular, DD type, DDQ type and solenoid type coil in the market, and there are the compensation topologies such as series, parallel, LCC.When coil and compensation topology collaboration composition transmission mechanism, as coil and interoperability difference brought by topological structure differenceIt will be unable to guarantee the normal work of charging system.Above situation bring consequence is once wireless charging product is in marketingStage will gradually be in competitive disadvantages without the product of interoperability with most products, and be finally eliminated out market.To protectThe interoperability between product is demonstrate,proved, dependence test mechanism needs to carry out product extensive testing, but this respect presence at present is difficult to solveCertainly the problem of.
The principle of existing test method is to interact test to all products, to ultimately form covering whole industry productStandard is needed to all product primary side equipment (primary assembly, GA) and secondary edge equipment (secondaryAssembly, VA) interoperability when power efficiency carry out cross-beta.Obviously, test job amount is huge and different manufacturers productIt is not readily available；Furthermore the moment forceful electric power working condition must be kept when test, therefore there are some potential safety problemss；In addition,Existing test method is directly to evaluate interoperability by transimission power and efficiency, since existing method is by all test products pairRegard two-port network as, power efficiency can only describe the overall permanence of two-port network, and different parameters are to interoperability in productInfluence be difficult to indicate by this method, also just can not guide product optimization design.
Summary of the invention
For this purpose, technical problem to be solved by the present invention lies in overcoming, test method is complicated in the prior art and there is peaceThe problem of full hidden danger, to provide a kind of simple method and the test method of the wireless charging device that avoids security risk and beSystem.
In order to solve the above technical problems, a kind of test method of wireless charging device of the invention, include the following steps: toProduct to be measured provides electric current, utilizes the magnetic flux of product to be measured described in gauge device measuring；Change the position of the gauge equipment,And test when putting at various locations, the magnetic flux of the product to be measured, when the gauge equipment moves in the range of setting,The magnetic flux of the product to be measured is in standard magnetic flux range, it is believed that meets test request, otherwise it is assumed that being unsatisfactory for testingIt is required that.
In one embodiment of the invention, the gauge equipment is made of multiple groups coil nesting.
In one embodiment of the invention, the shape of the coil is rectangular or round.
It in one embodiment of the invention, further include selection reference device and the gauge before the step S1Equipment, and the reference device is transmitting coil, the gauge equipment is receiving coil;And determine the reference device with it is describedStandard magnetic flux range between gauge equipment.
In one embodiment of the invention, the standard magnetic flux between the reference device and the gauge equipment is determinedThe method of range are as follows: cooperate according to the numerical value of standard selection setting or according to the reference device and the gauge equipmentWhen the magnetic flux that is calculated.
In one embodiment of the invention, the magnetic flux of the product to be measured is in the standard magnetic flux range,Think to meet interoperability, otherwise it is assumed that being unsatisfactory for interoperability.
In one embodiment of the invention, the product to be measured is connected with power supply, and the gauge equipment passes through electric power electricitySub- current transformer is connected with load.
In one embodiment of the invention, the electronic power convertor is capacitor, and the load is resistance.
In one embodiment of the invention, the voltage value of product to be measured is obtained according to the capacitor and the resistance, byThe voltage value obtains the magnetic flux of the product to be measured.
The present invention also provides a kind of test macros of wireless charging device, including measurement to change module, and the measurement changesBecome module to be used for when providing electric current to product to be measured, using the magnetic flux of product to be measured described in gauge device measuring, and changeThe position of the gauge equipment, when test is put at various locations, the magnetic flux of the product to be measured, when the gauge equipment is being setWhen fixed range is mobile, the magnetic flux of the product to be measured is in standard magnetic flux range, it is believed that meet test request, it is noThen, it is believed that be unsatisfactory for test request.
The above technical solution of the present invention has the following advantages over the prior art:
The test method and system of wireless charging device of the present invention measure the product to be measured by the gauge equipmentMagnetic flux, not only test job amount is greatly reduced, and solves the problems, such as that existing test method lacks test benchmark；SeparatelyOutside, forceful electric power working condition is not needed during whole operation, therefore avoids security risk.
Detailed description of the invention
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combinesAttached drawing, the present invention is described in further detail, wherein
Fig. 1 is the test method flow chart of wireless charging device of the present invention；
Fig. 2 is the test schematic diagram of present invention product to be measured；
Fig. 3 is the schematic diagram of gauge equipment of the present invention.
Figure of description explanation: 10- gauge equipment, 11- plate, 12- coil, 12A- first coil, the second coil of 12B-,12C- tertiary coil, 21- product to be measured, 22- power supply, 23- electronic power convertor, 24- load.
Specific embodiment
As depicted in figs. 1 and 2, the present embodiment provides a kind of test method of wireless charging device, include the following steps: to walkRapid S1: electric current is provided to product 21 to be measured, the magnetic flux of the product to be measured 21 is measured using gauge equipment 10；Step S2: changeBecome the position of the gauge equipment 10, and tests when putting at various locations, the magnetic flux of the product 21 to be measured, when the gaugeWhen equipment 10 moves in the range of setting, the magnetic flux of the product 21 to be measured is in standard magnetic flux range, it is believed that fullSufficient test request, otherwise it is assumed that being unsatisfactory for test request.
The test method of wireless charging device described in the present embodiment in the step S1, provides electric current to product 21 to be measured,The magnetic flux that the product to be measured 21 is measured using the gauge equipment 10, the voltage by measuring the product 21 to be measured can be withObtain the magnetic flux of the product to be measured 21；In the step S2, change the position of the gauge equipment 10, specifically, changesThe position of the receiving coil in the X, Y, Z direction, and test when putting at various locations, the magnetic flux of the product 21 to be measured,When the gauge equipment 10 moves in the range of setting, the magnetic flux of the product 21 to be measured is in standard magnetic flux rangeWhen, it is believed that meet test request, otherwise it is assumed that be unsatisfactory for test request, due to by the gauge equipment 10 measure it is described toThe magnetic flux of product 21 is surveyed, therefore is not only greatly reduced test job amount, and solves existing test method and lacks surveyThe problem of trying benchmark；In addition, not needing forceful electric power working condition during whole operation, only need to can measure by light current, thereforeAvoid security risk.
It further include selection reference device and the gauge equipment 10, and the reference device is before the step S1Transmitting coil, the gauge equipment 10 are receiving coil;And determine the mark between the reference device and the gauge equipment 10Quasi- magnetic flux range.Specifically, reference device and gauge equipment 10 are selected, and the reference device is transmitting coil, it is describedGauge equipment 10 is receiving coil, can produce magnetic field by the transmitting coil and the receiving coil；Determine the referenceStandard magnetic flux range between equipment and the gauge equipment 10, to be avoided not advantageous as a judge benchmarkWith the cross-beta of blindness between product.
As shown in Fig. 2, the product to be measured 21 is connected with power supply 22, to be conducive to provide electricity for the product 21 to be measuredStream, the gauge equipment 10 24 are connected by electronic power convertor 23 with load, by the electronic power convertor 23 andLoad 24 can effectively measure the voltage of the product to be measured 21, can measure the product to be measured 21 by the voltage valueMagnetic flux.Specifically, the electronic power convertor 23 is capacitor, and the load 24 is resistance.According to the capacitor with it is describedResistance obtains the voltage value of product to be measured, obtains the magnetic flux of the product to be measured 21 by the voltage value.
As shown in figure 3, in order to allow the gauge equipment 10 to measure different types of product to be measured 21, the gauge is setStandby 10 are made of multiple groups coil nesting, to be conducive to propose the optimizing index of product.Specifically, the gauge equipment 10 includesPlate 11 and multiple coils 12 on the plate 11, the coil 12 include: first coil 12A, the second coil 12BAnd tertiary coil 12C, wherein the first coil 12A is located at the center of the plate 11, the first coil 12A is nested inIn the second coil 12B, the second coil 12B is nested in the tertiary coil 12C, so as to connect different coilsConnect different products to be measured 21.The shape of the coil 12 be it is rectangular or round, to advantageously ensure that the property of the coil 12Can and it keep the area of the coil 12 larger.
In the present embodiment, the gauge equipment 10 can be the standard in existing electric car wireless charging international standardSecondary coil.The reference device can choose standard primary side as defined in standard primary coil or China in international standardCoil.In addition, the method for determining the standard magnetic flux range between the reference device and the gauge equipment 10 are as follows: according to markThe magnetic flux that standard selects the numerical value of setting or is calculated when being cooperated according to the reference device and the gauge equipment 10Amount.The magnetic flux of the product to be measured 21 is in the standard magnetic flux range, it is believed that meet interoperability, otherwise it is assumed thatIt is unsatisfactory for interoperability.
Embodiment two
As shown in Fig. 2, the present embodiment provides a kind of test macro of wireless charging device, including measurement changes module, the surveyAmount changes module and is used to measure the product to be measured 21 using the gauge equipment 10 when providing electric current to product 21 to be measuredMagnetic flux, and change the position of the gauge equipment 10, when test is put at various locations, the magnetic flux of the product 21 to be measured,When the gauge equipment 10 is when the range of setting is mobile, the magnetic flux of the product 21 to be measured is in standard magnetic flux rangeWhen, it is believed that meet test request, otherwise it is assumed that being unsatisfactory for test request.
The test macro of wireless charging device described in the present embodiment, including measurement change module, and the measurement changes moduleFor measuring the magnetic flux of the product to be measured 21 using the gauge equipment 10 when providing electric current to product 21 to be measured, andChange the position of the gauge equipment 10, when test is put at various locations, the magnetic flux of the product 21 to be measured, when the gaugeFor equipment 10 when the range of setting is mobile, the magnetic flux of the product 21 to be measured is in the standard magnetic flux range, it is believed thatMeet test request, otherwise it is assumed that being unsatisfactory for test request, due to only measuring the magnetic flux of the product to be measured 21, surveysExamination workload is greatly reduced；In addition, measuring the magnetic flux of the product to be measured 21 by the gauge equipment 10, therefore solveExisting test method lacks the problem of test benchmark, and whole operation does not need forceful electric power working condition, therefore avoid peaceFull hidden danger.
Obviously, the above embodiments are merely examples for clarifying the description, does not limit the embodiments.ForFor those of ordinary skill in the art, other different form variations can also be made on the basis of the above description or are becomeIt is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this or changeIt moves still within the protection scope of the invention.