CN116148584A - Wireless charging parameter testing method, device, equipment and medium - Google Patents
Wireless charging parameter testing method, device, equipment and medium Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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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
- G01R27/2605—Measuring capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- 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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Abstract
The application provides a method, a device, equipment and a medium for testing wireless charging parameters, and relates to the technical field of wireless charging; according to the attribute of the receiving coil, the load and the working current of the receiving equipment, determining a first candidate set of series resonance matching capacitors corresponding to the receiving equipment and a second candidate set of starting matching capacitors; sequentially testing the series resonance matching capacitance and the starting matching capacitance of the receiving equipment at each test position according to the first candidate set and the second candidate set to obtain the charging efficiency of corresponding wireless charging at each test position; and determining a first target capacitance value of the series resonance matching capacitor of the receiving equipment according to the charging efficiency, and starting a second target capacitance value of the matching capacitor. The method can improve the reference value of the parameters obtained by the test.
Description
Technical Field
The present disclosure relates to the field of wireless charging technologies, and in particular, to a method, an apparatus, a device, and a medium for testing wireless charging parameters.
Background
With the development of wireless charging technology, the application of the wireless charging technology on electronic devices (such as mobile phones and headsets) is also becoming wider and wider.
The wireless charging technology realizes electric energy transmission through electromagnetic induction. When the electronic equipment is in wireless charging, the transmitting equipment converts input electric energy into alternating current and utilizes the charging coil to generate a magnetic field, the magnetic field is coupled to a receiving coil in receiving equipment (such as a mobile phone) which is close to the receiving equipment, the receiving coil generates alternating current electric energy, and the receiving equipment converts alternating current into direct current voltage to be output by using a rectification technology for use by back-end equipment (load).
The charging efficiency of wireless charging is affected by the transmitting power, the surrounding environment, etc., so it is necessary to provide a method for testing wireless charging parameters to improve the reference value of the parameters obtained by testing.
Disclosure of Invention
The application provides a method, a device, equipment and a medium for testing wireless charging parameters, which can improve the reference value of the parameters obtained by testing.
In order to achieve the above purpose, the present application adopts the following technical scheme:
in a first aspect, the present application provides a method for testing a wireless charging parameter, the method comprising:
acquiring the attribute of a receiving coil of receiving equipment;
according to the attribute of the receiving coil, the load and the working current of the receiving equipment, determining a first candidate set of series resonance matching capacitors corresponding to the receiving equipment and a second candidate set of starting matching capacitors;
at each test position, according to the first candidate set and the second candidate set, sequentially testing the series resonance matching capacitance and the starting matching capacitance of the receiving device to obtain a test result, wherein the test result comprises: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of wireless charging;
and determining a first target capacitance value of the series resonance matching capacitor of the receiving equipment according to the charging efficiency of the wireless charging, and a second target capacitance value of the starting matching capacitor of the receiving equipment.
As an alternative implementation, the method further includes:
acquiring service requirements;
determining a corresponding weighting value at each test position according to the service demand;
correcting the charging efficiency according to the weighted value;
the determining, according to the charging efficiency of the wireless charging, a first target capacitance value of a series resonance matching capacitor of the receiving device, and a second target capacitance value of a start matching capacitor of the receiving device, includes:
and determining a first target capacitance value of the series resonance matching capacitor of the receiving equipment according to the corrected charging efficiency, and a second target capacitance value of the starting matching capacitor of the receiving equipment.
As an optional implementation manner, the determining, according to the corrected charging efficiency, a first target capacitance value of a series resonant matching capacitor of the receiving device, and a second target capacitance value of a start-up matching capacitor of the receiving device includes:
when the corrected charging efficiency is the maximum value, the capacitance value of the series resonance matching capacitor of the receiving device is used as a first target capacitance value, and the capacitance value of the starting matching capacitor of the receiving device is used as a second target capacitance value.
As an alternative implementation, the method further includes:
the first target capacitance value and the second target capacitance value are shown.
As an alternative implementation, the service requirement includes an overrideable charging range;
the determining the corresponding weighted value at each test position according to the service requirement comprises the following steps:
if the coverable charging range is larger than a preset range threshold, determining a first weighting value corresponding to a first test position, and determining a second weighting value corresponding to a second test position;
if the coverage charging range is smaller than or equal to a preset range threshold, determining a third weighting value corresponding to the first test position, and a fourth weighting value corresponding to the second test position;
the distance between the first test position and the transmitting device is smaller than the distance between the second test position and the transmitting device, the first weighting value is smaller than the third weighting value, and the second weighting value is larger than the fourth weighting value.
In a second aspect, the present application provides a test device for wireless charging parameters, the test device comprising:
the acquisition module is used for acquiring the attribute of the receiving coil of the receiving equipment;
the determining module is used for determining a first candidate set of series resonance matching capacitors corresponding to the receiving equipment and a second candidate set of starting matching capacitors according to the attribute of the receiving coil, the load of the receiving equipment and the working current of the receiving equipment;
the test module is used for sequentially testing the series resonance matching capacitance and the starting matching capacitance of the receiving equipment at each test position according to the first candidate set and the second candidate set to obtain a test result, and the test result comprises: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of wireless charging;
the determining module is further configured to determine a first target capacitance value of a series resonance matching capacitor of the receiving device according to the charging efficiency of the wireless charging, and a second target capacitance value of a start matching capacitor of the receiving device.
As an alternative implementation, the apparatus further includes: a correction module;
the acquisition module is also used for acquiring service requirements;
the determining module is further configured to determine a weight value corresponding to each test position according to the service requirement;
the correction module is used for correcting the charging efficiency according to the weighted value;
the determining module is specifically configured to determine, according to the corrected charging efficiency, a first target capacitance value of a series resonance matching capacitor of the receiving device, and a second target capacitance value of a start matching capacitor of the receiving device.
As an optional implementation manner, the determining module is specifically configured to use, when the corrected charging efficiency is the maximum value, a capacitance value of the series resonant matching capacitor of the receiving device as a first target capacitance value, and a capacitance value of the start matching capacitor of the receiving device as a second target capacitance value.
As an alternative implementation manner, the apparatus further includes a display module, where the display module is configured to display the first target capacitance value and the second target capacitance value.
As an alternative implementation, the service requirement includes an overrideable charging range; the determining module is specifically configured to determine a first weighted value corresponding to a first test position and a second weighted value corresponding to a second test position if the coverable charging range is greater than a preset range threshold; if the coverage charging range is smaller than or equal to a preset range threshold, determining a third weighting value corresponding to the first test position, and a fourth weighting value corresponding to the second test position; the distance between the first test position and the transmitting device is smaller than the distance between the second test position and the transmitting device, the first weighting value is smaller than the third weighting value, and the second weighting value is larger than the fourth weighting value.
In a third aspect, the present application provides a test apparatus for wireless charging parameters, including: the device comprises a controller, a driving mechanism, a transmitting device and a test board;
the test bench is used for placing receiving equipment;
the controller is used for controlling the driving mechanism to drive the test bench to drive the receiving equipment to each test position;
the transmitting equipment is used for wirelessly charging the receiving equipment;
the controller is configured to perform a test of the wireless charging parameters according to the method of any one of the first aspects.
In a fourth aspect, the present application provides a computer storage medium comprising computer instructions which, when run on a computing device, perform the method of any one of the first aspects.
Based on the technical scheme, the application has the following beneficial effects:
the application provides a method for testing wireless charging parameters, which comprises the steps of obtaining the attribute of a receiving coil of receiving equipment; according to the attribute of the receiving coil, the load and the working current of the receiving equipment, determining a first candidate set of series resonance matching capacitors corresponding to the receiving equipment and a second candidate set of starting matching capacitors; at each test position, according to the first candidate set and the second candidate set, sequentially testing the series resonance matching capacitance and the starting matching capacitance of the receiving device to obtain a test result, wherein the test result comprises: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of wireless charging; and determining a first target capacitance value of the series resonance matching capacitor of the receiving equipment according to the charging efficiency of the wireless charging, and a second target capacitance value of the starting matching capacitor of the receiving equipment. In the method, through all tests on each test position and parameters in the first candidate set and the second candidate set, the actual scene of wireless charging is considered, so that the test result has more practical significance and reference value, the series resonance matching capacitance of the receiving equipment can be configured based on the first target capacitance value obtained by the test, and the starting matching capacitance of the receiving equipment can be configured based on the second target capacitance value obtained by the test, so that the receiving equipment can work with higher charging efficiency.
It should be appreciated that the description of technical features, aspects, benefits or similar language in this application does not imply that all of the features and advantages may be realized with any single embodiment. Conversely, it should be understood that the description of features or advantages is intended to include, in at least one embodiment, the particular features, aspects, or advantages. Therefore, the description of technical features, technical solutions or advantageous effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and advantageous effects described in the present embodiment may also be combined in any appropriate manner. Those of skill in the art will appreciate that an embodiment may be implemented without one or more particular features, aspects, or benefits of a particular embodiment. In other embodiments, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments.
Drawings
Fig. 1 is a schematic diagram of a wireless charging system according to an embodiment of the present application;
fig. 2 is a flowchart of a method for testing wireless charging parameters according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a test position according to an embodiment of the present application;
fig. 4 is a schematic diagram of a receiving device in an origin position according to an embodiment of the present application;
fig. 5 is a bubble chart of charging efficiency according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a test system according to an embodiment of the present application;
FIG. 7 is a schematic diagram illustrating the operation of a test system according to an embodiment of the present application;
fig. 8 is a schematic diagram of a device for testing wireless charging parameters according to an embodiment of the present application;
fig. 9 is a schematic diagram of a test apparatus according to an embodiment of the present application.
Detailed Description
The terms first, second, third and the like in the description and in the claims and drawings are used for distinguishing between different objects and not for limiting the specified sequence.
In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In order to make the technical scheme of the application clearer and easier to understand, the technical scheme of the application is described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a wireless charging system according to an embodiment of the present application. The wireless charging system comprises a transmitting device 11 and a receiving device 12. Wherein the transmitting device 11 comprises a capacitor C1, a transmitting coil Lp, a resistor Rp, and the receiving device 12 comprises a capacitor C2, a receiving coil Ls, a resistor Rs and a load Rload. The transmission coil Lp and the receiving coil Ls are coupled to transmit the input power of the transmitting device 11 to the receiving device 12, thereby realizing wireless charging.
In order to ensure the charging efficiency of wireless charging, it is necessary to debug the wireless charging device, for example, to adjust the series resonance matching capacitance Cs of the receiving device and to adjust the start-up matching capacitance Cd, so that Cs and Cd of the receiving device are at an optimal value, and further, the charging efficiency of wireless charging is at an optimal value.
The embodiment of the application provides a method for testing wireless charging parameters, which can be applied to test equipment, and comprises the steps that the test equipment acquires the attribute of a receiving coil of receiving equipment; the testing equipment determines a first candidate set of series resonance matching capacitors corresponding to the receiving equipment and a second candidate set of starting matching capacitors according to the attribute of the receiving coil, the load of the receiving equipment and the working current of the receiving equipment; the testing device sequentially tests the series resonance matching capacitance and the starting matching capacitance of the receiving device at each testing position according to the first candidate set and the second candidate set to obtain a testing result, wherein the testing result comprises: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of wireless charging; and determining a first target capacitance value of the series resonance matching capacitor of the receiving equipment according to the charging efficiency of the wireless charging, and a second target capacitance value of the starting matching capacitor of the receiving equipment. In the method, through all tests on each test position and parameters in the first candidate set and the second candidate set, the actual scene of wireless charging is considered, so that the test result has more practical significance and reference value, the series resonance matching capacitance of the receiving equipment can be configured based on the first target capacitance value obtained by the test, and the starting matching capacitance of the receiving equipment can be configured based on the second target capacitance value obtained by the test, so that the receiving equipment can work with higher charging efficiency.
For ease of understanding, the following description is provided in connection with the accompanying drawings.
Fig. 2 is a flowchart of a method for testing wireless charging parameters according to an embodiment of the present application. The method comprises the following steps:
s201: the test device obtains the properties of the receiving coil of the receiving device.
The receiving device may be a mobile phone, a notebook computer, a wearable device (such as a smart headset, a smart watch, a smart glasses) or the like that supports wireless charging. The properties of the receiving coil may include information such as the structure of the receiving coil, and when the properties of the receiving coil are determined, a particular receiving coil may be determined.
In some examples, a correspondence between the identity of the receiving device and the properties of the receiving coil may be obtained in advance, and then based on the correspondence and the identity of the receiving device to be tested, the properties of the receiving coil of the receiving device may be determined, so that the specific receiving coil may be uniquely determined.
S202: and the testing equipment determines a first candidate set of the series resonance matching capacitor corresponding to the receiving equipment and a second candidate set of the starting matching capacitor according to the attribute of the receiving coil, the load of the receiving equipment and the working current of the receiving equipment.
In some examples, a mapping relationship between the attribute of the receiving coil, the load of the receiving device, the set of operating currents corresponding to the series resonant matching capacitances, and the set of start matching capacitances may be obtained in advance, and then based on the mapping relationship, the attribute of the receiving coil, and the load and the operating current of the receiving device, the corresponding first candidate set and second candidate set may be determined.
In some examples, the first candidate set may be determined to be 47 nf-500 nf, and the second candidate set may be determined to be 1 nf-20 nf (the specific value may be determined based on QI protocol) based on the attribute of the receiving coil, the load of the receiving device, and the operating current.
S203: the testing device sequentially tests the series resonance matching capacitance and the starting matching capacitance of the receiving device at each testing position according to the first candidate set and the second candidate set to obtain a testing result, wherein the testing result comprises: each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set at each test location corresponds to a charging efficiency of the wireless charging.
The test position refers to the position where the receiving device is located, which may include a horizontal offset as well as a vertical offset between the transmitting coil and the receiving coil. Fig. 3 is a schematic diagram of a test position according to an embodiment of the present application. As can be seen from the figure, the horizontal offset between the transmitting coil Lp and the receiving coil Ls is d1, and the vertical offset between the transmitting coil Lp and the receiving coil Ls is d2. The test position can be characterized by the horizontal offset d1 and the vertical offset d2 described above.
In some examples, the test device may first drive the receiving device to an origin position, where the origin position is a position corresponding to when a horizontal offset d1 between the transmitting coil and the receiving coil is 0 and a vertical offset d2 is a preset value. Fig. 4 is a schematic diagram of a receiving device in an origin position according to an embodiment of the present application.
After the receiving device is in the origin position, the series resonant matching capacitance and the start matching capacitance of the receiving device may be adjusted based on the first candidate set and the second candidate set. For example, determining a first candidate capacitance value from the first candidate set, and adjusting the series resonant matching capacitance of the receiving device based on the first candidate capacitance value, i.e., adjusting the series resonant matching capacitance of the receiving device to the first candidate capacitance value; similarly, a second candidate capacitance value is determined from the second candidate set, and the starting matching capacitance of the receiving device is adjusted based on the second candidate capacitance value, namely, the starting matching capacitance of the receiving device is adjusted to be the second candidate capacitance value.
And then testing the adjusted receiving equipment to obtain the charging efficiency of the wireless charging corresponding to the receiving equipment at the original point position, the first candidate capacitance value and the second candidate capacitance value.
Then, the steps of adjusting the series resonance matching capacitance and the start matching capacitance of the receiving device and testing the adjusted receiving device can be repeated, so as to obtain the charging efficiency of the wireless charging corresponding to each first candidate capacitance value and each second candidate capacitance value of the receiving device at the original point position.
In some examples, in determining the first candidate capacitance value in the first candidate set, the determination may be based on a typical value, which may be, for example, a capacitance value of a capacitive element commonly found on the market. Thus, not only the test efficiency can be improved, but also the production of the receiving equipment is easy.
After the testing is completed at the original point, the testing device can drive the receiving device to move to the next testing position, and then the steps are repeated to test the charging efficiency of the wireless charging of the receiving device, so as to obtain a testing result, wherein the testing result comprises: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of the wireless charging.
S204: the test device determines a first target capacitance value of a series resonance matching capacitor of the receiving device and a second target capacitance value of a starting matching capacitor of the receiving device according to the charging efficiency of wireless charging.
In some embodiments, after the test device obtains the test result, the charging efficiency in the preset position range may determine a first target capacitance value of the series resonant matching capacitor of the receiving device and a second target capacitance value of the start-up matching capacitor of the receiving device. The preset position range comprises a horizontal offset range and a vertical offset range.
In view of the actual product, there will be a certain gap between the receiving coil and the transmitting coil, the minimum value of the vertical offset being greater than 0. For example, in some examples, the horizontal offset ranges from 0mm to 10mm and the vertical offset ranges from 5mm to 10mm.
In some examples, a plurality of locations may be selected within the above-described range of preset locations, and a determination may be made as to whether to take the first candidate capacitance value as the first target capacitance value and the second candidate capacitance value as the second target capacitance value based on a combined efficiency of the first candidate capacitance value and the second candidate capacitance value at the plurality of locations.
By way of example, the plurality of positions includes a first position, a second position, and a third position, wherein the first position has a horizontal offset of 0 and a vertical offset of 5mm; the second position has a horizontal offset of 5mm, a vertical offset of 7mm, and the third position has a horizontal offset of 10mm and a vertical offset of 10mm.
The testing equipment can average the charging efficiency of the first position, the charging efficiency of the second position and the charging efficiency of the third position to obtain comprehensive efficiency, wherein the first candidate capacitance value corresponding to the highest comprehensive efficiency is used as a first target capacitance value, and the second candidate capacitance value corresponding to the highest comprehensive efficiency is used as a second target capacitance value.
In some embodiments, the test device may further obtain a service requirement, determine a weight value corresponding to each test location according to the service requirement, and then correct the charging efficiency based on the weight value. As shown in fig. 5, the graph is a bubble chart of charging efficiency according to an embodiment of the present application. The graph shows, among other things, the effect of a change in horizontal offset on the change in charging efficiency.
In some examples, if the service requirement requires that the coverage charging range is greater than a preset range threshold, that is, the receiving device is required to be capable of charging with higher efficiency even if there is an offset, at this time, the weighting value corresponding to the first test position is determined as the first weighting value, and the weighting value corresponding to the second test position is determined as the second weighting value. Of course, the weight value corresponding to the third test position may also be determined as the fifth weight value.
The first test position may be a first position, the second test position may be a second position, and the third test position may be a third position.
If the service requirement coverage charging range is smaller than or equal to a preset range threshold, namely, the original point position of the receiving device is required to be charged with higher efficiency, at the moment, the weighted value corresponding to the first test position is determined to be a third weighted value, and the weighted value corresponding to the second test position is determined to be a fourth weighted value. Of course, the weighting value corresponding to the third test position may also be determined as the sixth weighting value.
The distance between the first test position and the transmitting device is smaller than that between the second test position and the transmitting device, the distance between the second test position and the transmitting device is smaller than that between the third test position and the transmitting device, the first weighting value is smaller than the third weighting value, the second weighting value is larger than the fourth weighting value, and the fifth weighting value is larger than the sixth weighting value. Wherein, a small distance means that the horizontal offset is small and/or the vertical offset is small.
After the above-described weighting values are determined, the charging efficiency may be corrected based on the weighting values.
As described by way of example below, if the service requirement is that the coverage charging range is greater than the preset range threshold, the charging efficiency at the first location is 90%, and the first weighting value is 0.7; the charging efficiency of the second position is 80%, and the second weighting value is 0.2; the charging efficiency at the third position is 70%, and the fifth weight value is 0.1. At this time, the overall efficiency of the receiving apparatus was 86%, and the overall efficiency was corrected from the average value 80% to 86%. Then, the first candidate capacitance value corresponding to the highest comprehensive efficiency is used as a first target capacitance value, and the second candidate capacitance value corresponding to the highest comprehensive efficiency is used as a second target capacitance value.
In other examples, if the service requirement is that the coverage charging range is less than or equal to the preset range threshold, the charging efficiency at the first location is 90%, and the first weighting value is 0.5; the charging efficiency of the second position is 80%, and the second weighting value is 0.3; the charging efficiency at the third position is 70%, and the fifth weight value is 0.2. At this time, the overall efficiency of the receiving apparatus was 83%, and the overall efficiency was corrected from the average value 80% to 86%. Then, the first candidate capacitance value corresponding to the highest comprehensive efficiency is used as a first target capacitance value, and the second candidate capacitance value corresponding to the highest comprehensive efficiency is used as a second target capacitance value.
Therefore, according to the test scheme, the service requirement can be targeted, and the first target capacitance value and the second target capacitance value which are suitable for the service requirement are obtained.
In some embodiments, after the first target capacitance value and the second target capacitance value are determined, the test device may be displayed through the display device, so that a user may record or count the tested parameters, and convenience is improved.
As shown in fig. 6, the schematic diagram of a test system provided in an embodiment of the present application includes an algorithm control system 601, a transmitting end energy acquisition system 602, a mechanical structure control system 603, a traversing system 604, and an interaction system 605.
The transmitting end energy obtaining system 602 is configured to obtain transmitting end energy, send the transmitting end energy to the algorithm control system 601, and after the algorithm control system 601 receives the transmitting end energy, send a test position to the mechanical structure control system 603 based on efficiency calculation or the like, and after the mechanical structure test system 603 receives the test position, drive the receiving device to the test position. The traversal system 604 may then transmit the Cs value and Cd value to the algorithm control system 601 to test each Cs value and Cd value at the test location. The algorithm control system 601 may transmit output (e.g., determined Cs and Cd values) and test results to the interactive system 605, and the interactive system 605 may present the test results and the determined Cs and Cd values. The interactive system 605 may also receive user inputs such as Cs and Cd values, test location inputs, weighting values inputs, and the like.
Fig. 7 is a schematic working diagram of a test system according to an embodiment of the present application. The working principle can comprise:
s701: the controller sends the test position to the drive structure.
S702: the drive structure drives the receiving device to the test position.
S703: traversing Cs and Cd in the candidate set begins.
S704: energy transmission is started for testing.
S705: and replacing the next group of Cs and Cd, and testing again until the traversal is completed.
S706: a weighted value is obtained.
S707: calculation of charging efficiency is performed.
S708: and sends the next test location to the drive structure, and then repeats S702-S708 above until testing is completed at each test location.
S709: the determined Cs and Cd values are shown. Test results may also be presented.
It should be noted that, the specific implementation manner may be referred to the above embodiments, and will not be described herein.
The embodiment of the application also provides a device for testing wireless charging parameters, as shown in fig. 8, where the figure is a schematic diagram of the device for testing wireless charging parameters, and the device for testing wireless charging parameters includes:
an obtaining module 801, configured to obtain an attribute of a receiving coil of a receiving device;
a determining module 802, configured to determine, according to an attribute of the receiving coil, and a load and an operating current of a receiving device, a first candidate set of series resonant matching capacitors corresponding to the receiving device, and a second candidate set of start matching capacitors;
a testing module 803, configured to sequentially test, at each testing position, the series resonant matching capacitor and the start matching capacitor of the receiving device according to the first candidate set and the second candidate set, to obtain a testing result, where the testing result includes: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of wireless charging;
the determining module 802 is further configured to determine, according to the charging efficiency of the wireless charging, a first target capacitance value of a series resonant matching capacitor of the receiving device, and a second target capacitance value of a start matching capacitor of the receiving device.
As an alternative implementation, the apparatus further includes: a correction module;
the acquiring module 801 is further configured to acquire a service requirement;
the determining module 802 is further configured to determine, according to the service requirement, a weight value corresponding to each test position;
the correction module is used for correcting the charging efficiency according to the weighted value;
the determining module 802 is specifically configured to determine, according to the corrected charging efficiency, a first target capacitance value of a series resonant matching capacitor of the receiving device, and a second target capacitance value of a start matching capacitor of the receiving device.
As an optional implementation manner, the determining module 802 is specifically configured to use, when the corrected charging efficiency is the maximum value, the capacitance value of the series resonant matching capacitor of the receiving device as the first target capacitance value, and the capacitance value of the start-up matching capacitor of the receiving device as the second target capacitance value.
As an alternative implementation manner, the apparatus further includes a display module, where the display module is configured to display the first target capacitance value and the second target capacitance value.
As an alternative implementation, the service requirement includes an overrideable charging range; the determining module 802 is specifically configured to determine a first weighted value corresponding to a first test position and a second weighted value corresponding to a second test position if the coverable charging range is greater than a preset range threshold; if the coverage charging range is smaller than or equal to a preset range threshold, determining a third weighting value corresponding to the first test position, and a fourth weighting value corresponding to the second test position; the distance between the first test position and the transmitting device is smaller than the distance between the second test position and the transmitting device, the first weighting value is smaller than the third weighting value, and the second weighting value is larger than the fourth weighting value.
As shown in fig. 9, the schematic diagram of a test apparatus provided in an embodiment of the present application, the test apparatus includes a controller 901, a driving mechanism 902, a transmitting apparatus 904, and a test bench 903.
The test bench 903 is used for placing receiving equipment;
the controller 901 is configured to control the driving mechanism 902 to drive the test bench 903 to drive the receiving device to each test position;
the transmitting device 904 is configured to wirelessly charge the receiving device;
the controller 901 is configured to perform a test of the wireless charging parameter according to the method described in the foregoing embodiment.
In some examples, the test apparatus further comprises a vertical offset adjuster 905 for adjusting a vertical offset between a receive coil of the receive apparatus and a transmit coil of the transmit apparatus 904.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
In the several embodiments provided in this embodiment, it should be understood that the disclosed processing apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present embodiment may be integrated in one processing unit, each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present embodiment may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the method described in the respective embodiments. And the aforementioned storage medium includes: flash memory, removable hard disk, read-only memory, random access memory, magnetic or optical disk, and the like.
The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for testing wireless charging parameters, comprising:
acquiring the attribute of a receiving coil of receiving equipment;
according to the attribute of the receiving coil, the load and the working current of the receiving equipment, determining a first candidate set of series resonance matching capacitors corresponding to the receiving equipment and a second candidate set of starting matching capacitors;
at each test position, according to the first candidate set and the second candidate set, sequentially testing the series resonance matching capacitance and the starting matching capacitance of the receiving device to obtain a test result, wherein the test result comprises: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of wireless charging;
and determining a first target capacitance value of the series resonance matching capacitor of the receiving equipment according to the charging efficiency of the wireless charging, and a second target capacitance value of the starting matching capacitor of the receiving equipment.
2. The method according to claim 1, wherein the method further comprises:
acquiring service requirements;
determining a corresponding weighting value at each test position according to the service demand;
correcting the charging efficiency according to the weighted value;
the determining, according to the charging efficiency of the wireless charging, a first target capacitance value of a series resonance matching capacitor of the receiving device, and a second target capacitance value of a start matching capacitor of the receiving device, includes:
and determining a first target capacitance value of the series resonance matching capacitor of the receiving equipment according to the corrected charging efficiency, and a second target capacitance value of the starting matching capacitor of the receiving equipment.
3. The method according to claim 1 or 2, wherein determining a first target capacitance value of a series resonant matching capacitance of the receiving device, and a second target capacitance value of a start-up matching capacitance of the receiving device, based on the corrected charging efficiency, comprises:
when the corrected charging efficiency is the maximum value, the capacitance value of the series resonance matching capacitor of the receiving device is used as a first target capacitance value, and the capacitance value of the starting matching capacitor of the receiving device is used as a second target capacitance value.
4. A method according to claim 3, characterized in that the method further comprises:
the first target capacitance value and the second target capacitance value are shown.
5. The method of claim 2, wherein the business requirement comprises an coverable charging range;
the determining the corresponding weighted value at each test position according to the service requirement comprises the following steps:
if the coverage charging range is larger than a preset range threshold, determining a first weighting value corresponding to a first test position and a second weighting value corresponding to a second test position;
if the coverage charging range is smaller than or equal to a preset range threshold, determining a third weighting value corresponding to the first test position, and a fourth weighting value corresponding to the second test position;
the distance between the first test position and the transmitting device is smaller than the distance between the second test position and the transmitting device, the first weighting value is smaller than the third weighting value, and the second weighting value is larger than the fourth weighting value.
6. A device for testing wireless charging parameters, comprising:
the acquisition module is used for acquiring the attribute of the receiving coil of the receiving equipment;
the determining module is used for determining a first candidate set of series resonance matching capacitors corresponding to the receiving equipment and a second candidate set of starting matching capacitors according to the attribute of the receiving coil, the load of the receiving equipment and the working current of the receiving equipment;
the test module is used for sequentially testing the series resonance matching capacitance and the starting matching capacitance of the receiving equipment at each test position according to the first candidate set and the second candidate set to obtain a test result, and the test result comprises: at each test location, each candidate capacitance value in the first candidate set and each candidate capacitance value in the second candidate set corresponds to a charging efficiency of wireless charging;
the determining module is further configured to determine a first target capacitance value of a series resonance matching capacitor of the receiving device according to the charging efficiency of the wireless charging, and a second target capacitance value of a start matching capacitor of the receiving device.
7. The apparatus of claim 6, wherein the apparatus further comprises: a correction module;
the acquisition module is also used for acquiring service requirements;
the determining module is further configured to determine a weight value corresponding to each test position according to the service requirement;
the correction module is used for correcting the charging efficiency according to the weighted value;
the determining module is specifically configured to determine, according to the corrected charging efficiency, a first target capacitance value of a series resonance matching capacitor of the receiving device, and a second target capacitance value of a start matching capacitor of the receiving device.
8. The apparatus according to claim 6 or 7, wherein the determining module is specifically configured to use, when the corrected charging efficiency is at a maximum value, a capacitance value of a series resonant matching capacitor of the receiving device as a first target capacitance value, and a capacitance value of a start-up matching capacitor of the receiving device as a second target capacitance value.
9. A test device for wireless charging parameters, comprising: the device comprises a controller, a driving mechanism, a transmitting device and a test board;
the test bench is used for placing receiving equipment;
the controller is used for controlling the driving mechanism to drive the test bench to drive the receiving equipment to each test position;
the transmitting equipment is used for wirelessly charging the receiving equipment;
the controller for performing a test of wireless charging parameters according to the method of any one of claims 1-5.
10. A computer storage medium comprising computer instructions which, when executed on a computing device, perform the method of any of claims 1 to 5.
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