CN115009050A - Vehicle wireless charging protection method and device, storage medium and wireless charging vehicle - Google Patents
Vehicle wireless charging protection method and device, storage medium and wireless charging vehicle Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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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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Abstract
The invention discloses a vehicle wireless charging protection method and device, a storage medium and a wireless charging vehicle. The method comprises the steps of firstly obtaining wireless charging calibration data, first coil temperature and target impedance of a target vehicle, further calculating to obtain second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, and finally performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result. The invention solves the technical problems of low detection accuracy and poor reliability of the method for carrying out wireless charging protection by detecting the temperature of the vehicle-mounted coil in the prior art.
Description
Technical Field
The invention relates to the field of new energy vehicles, in particular to a vehicle wireless charging protection method and device, a storage medium and a wireless charging vehicle.
Background
In the field of new energy vehicles, the application of the wireless charging technology is more and more extensive. The vehicle is at wireless charging process, and the coil area of receiving electric energy is great, and the electric current passes through the coil and can produce the heating phenomenon to the coil, can cause the not enough safety of charging when the coil is overheated.
In the related art, the method for protecting the wireless charging vehicle from charging mainly comprises the following steps: the temperature sensor is embedded in the coil, the temperature of the coil obtained by the temperature sensor is detected, and the system is adjusted according to the temperature to protect the coil. However, this method has drawbacks in that: the resource consumption is large by embedding the temperature sensor; the accuracy of wireless charging abnormity detection is low (such as the condition that a limited number of temperature sensors cannot effectively identify local overheating of a coil), and the reliability of wireless charging protection of the system is low.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a vehicle wireless charging protection method, a vehicle wireless charging protection device, a storage medium and a wireless charging vehicle, and at least solves the technical problems of low detection accuracy and poor reliability of a method for performing wireless charging protection by detecting the temperature of a vehicle-mounted coil in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a vehicle wireless charging protection method, including:
the method comprises the steps of obtaining wireless charging calibration data, first coil temperature and target impedance of a target vehicle, wherein the wireless charging calibration data is used for determining wireless charging state information obtained by testing when the target vehicle is completely off-line, the first coil temperature is used for representing the real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used for representing the real-time system equivalent impedance of the target vehicle for wireless charging; calculating a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, wherein the second coil temperature is used for representing an expected coil temperature for wireless charging; and performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result.
Optionally, the wireless charging calibration data includes: the calibration method comprises the steps of calibrating coil temperature and calibration impedance corresponding to a target vehicle, wherein the calibration coil temperature is the coil temperature when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test, and the calibration impedance is the system equivalent impedance when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test.
Optionally, obtaining the first coil temperature and the target impedance of the target vehicle comprises: acquiring a first coil temperature by using a coil temperature sensor of a target vehicle; acquiring real-time voltage data of a coil by using a voltage detector of a target vehicle; acquiring real-time current data of a coil by using a current detector of a target vehicle; and calculating based on the coil real-time voltage data and the coil real-time current data to obtain the target impedance.
Optionally, calculating the second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance includes: determining a target corresponding relation of the target vehicle based on the calibration coil temperature and the calibration impedance in the wireless charging calibration data, wherein the target corresponding relation is used for determining the corresponding relation between the coil temperature of the target vehicle and the system equivalent impedance; and determining the second coil temperature of the target vehicle corresponding to the target impedance according to the target corresponding relation.
Optionally, the wireless charging adjustment of the target vehicle is performed according to the first coil temperature and the second coil temperature, and obtaining the target charging result includes: comparing and analyzing based on a first preset threshold, a second preset threshold, a first coil temperature and a second coil temperature to obtain wireless charging adjustment information, wherein the first preset threshold is used for determining a safe value range of the coil temperature when the target vehicle is wirelessly charged, and the second preset threshold is used for determining a safe difference value range between a real-time coil temperature and an expected coil temperature when the target vehicle is wirelessly charged; and performing wireless charging adjustment on the target vehicle according to the wireless charging adjustment information to obtain a target charging result.
Optionally, the obtaining of the wireless charging adjustment information based on a comparison analysis of a first preset threshold, a second preset threshold, a first coil temperature, and a second coil temperature includes: generating first adjustment information in response to the first coil temperature not being smaller than a first preset threshold, wherein the first adjustment information is used for determining that the wireless charging power of a target vehicle corresponding to the first coil temperature is reduced according to a first preset adjustment rule; in response to the first coil temperature being smaller than a first preset threshold, performing difference analysis on the first coil temperature and the second coil temperature according to a second preset threshold to generate a difference analysis result; and obtaining wireless charging adjustment information according to the first adjustment information and the difference analysis result.
Optionally, performing difference analysis on the first coil temperature and the second coil temperature according to a second preset threshold, and generating a difference analysis result includes: calculating the difference value of the first coil temperature and the second coil temperature to obtain a calculation result; generating second adjustment information in response to the calculation result not being smaller than a second preset threshold, wherein the second adjustment information is used for determining that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a second preset adjustment rule; responding to the calculation result smaller than a second preset threshold value, and generating holding information, wherein the holding information is used for determining that the target vehicle is in a wireless charging safety state and does not need to be subjected to wireless charging adjustment; and determining a difference analysis result according to the second adjustment information and the holding information.
According to an embodiment of the present invention, there is also provided a vehicle wireless charging protection device, including:
the acquisition module is used for acquiring wireless charging calibration data, first coil temperature and target impedance of the target vehicle, wherein the wireless charging calibration data is used for determining wireless charging state information obtained by testing when the target vehicle is completely off-line, the first coil temperature is used for representing the real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used for representing the real-time system equivalent impedance of the target vehicle for wireless charging.
And the calculation module is used for calculating and obtaining a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, wherein the second coil temperature is used for representing an expected coil temperature for wireless charging.
And the adjusting module is used for performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result.
Optionally, in the above vehicle wireless charging protection device, the wireless charging calibration data includes: the method comprises the steps of calibrating coil temperature and calibration impedance corresponding to a target vehicle, wherein the calibration coil temperature is the coil temperature when the target vehicle is wirelessly charged at a rated power in the whole vehicle offline test, and the calibration impedance is the system equivalent impedance when the target vehicle is wirelessly charged at the rated power in the whole vehicle offline test.
Optionally, the obtaining module is further configured to obtain a first coil temperature by using a coil temperature sensor of the target vehicle; acquiring real-time voltage data of a coil by using a voltage detector of a target vehicle; acquiring real-time current data of a coil by using a current detector of a target vehicle; and calculating based on the coil real-time voltage data and the coil real-time current data to obtain the target impedance.
Optionally, the calculation module is further configured to determine a target correspondence of the target vehicle based on the calibration coil temperature and the calibration impedance in the wireless charging calibration data, where the target correspondence is used to determine a correspondence between the coil temperature of the target vehicle and the system equivalent impedance; and determining the second coil temperature of the target vehicle corresponding to the target impedance according to the target corresponding relation.
Optionally, the adjusting module is further configured to compare and analyze a first preset threshold, a second preset threshold, a first coil temperature and a second coil temperature to obtain wireless charging adjusting information, where the first preset threshold is used to determine a safe value range of the coil temperature when the target vehicle is wirelessly charged, and the second preset threshold is used to determine a safe difference range between a real-time coil temperature and an expected coil temperature when the target vehicle is wirelessly charged; and performing wireless charging adjustment on the target vehicle according to the wireless charging adjustment information to obtain a target charging result.
Optionally, the adjusting module is further configured to generate first adjusting information in response to that the first coil temperature is not less than a first preset threshold, where the first adjusting information is used to determine that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a first preset adjusting rule; in response to the first coil temperature being smaller than a first preset threshold, performing difference analysis on the first coil temperature and the second coil temperature according to a second preset threshold to generate a difference analysis result; and obtaining wireless charging adjustment information according to the first adjustment information and the difference analysis result.
Optionally, the adjusting module is further configured to calculate a difference between the first coil temperature and the second coil temperature to obtain a calculation result; generating second adjustment information in response to the calculation result not being smaller than a second preset threshold, wherein the second adjustment information is used for determining that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a second preset adjustment rule; responding to the calculation result smaller than a second preset threshold value, and generating holding information, wherein the holding information is used for determining that the target vehicle is in a wireless charging safety state and does not need to be subjected to wireless charging adjustment; and determining a difference analysis result according to the second adjustment information and the holding information.
According to an embodiment of the present invention, there is also provided a non-volatile storage medium, wherein the storage medium stores a computer program, and the computer program is configured to execute the vehicle wireless charging protection method in any one of the above methods when running.
According to an embodiment of the invention, there is also provided a wireless charging vehicle, including an onboard memory and an onboard processor, wherein the onboard memory is used for storing a program, and the onboard processor is used for running the program, and the program is configured to execute the wireless charging protection method of the vehicle in any one of the above mentioned items when running.
In the embodiment of the invention, the second coil temperature of the target vehicle is obtained by obtaining the wireless charging calibration data, the first coil temperature and the target impedance of the target vehicle, and further based on the wireless charging calibration data and the target impedance, so that the target vehicle is subjected to wireless charging adjustment according to the first coil temperature and the second coil temperature to obtain the target charging result, and the purpose of performing wireless charging protection based on the coil temperature of the wireless charging vehicle and the system equivalent impedance is achieved, thereby realizing the technical effects of accurately identifying wireless charging abnormity at lower cost and improving the reliability of a wireless charging protection system, and further solving the technical problems of low detection accuracy and poor reliability of the method for performing wireless charging protection by detecting the temperature of a vehicle-mounted coil in the prior art.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flow chart of a vehicle wireless charging protection method according to one embodiment of the invention;
FIG. 2 is a schematic diagram of a process for implementing wireless charging protection for a vehicle according to one embodiment of the invention;
fig. 3 is a specific example schematic diagram of a vehicle wireless charging protection method according to an embodiment of the invention;
fig. 4 is a block diagram of a vehicle wireless charging protection device according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided a vehicle wireless charging protection method embodiment, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Fig. 1 is a flowchart of a vehicle wireless charging protection method according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step S11, acquiring wireless charging calibration data, a first coil temperature and a target impedance of a target vehicle, wherein the wireless charging calibration data is used for determining wireless charging state information obtained by testing when the target vehicle is off line completely, the first coil temperature is used for representing the real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used for representing the real-time system equivalent impedance of the target vehicle for wireless charging;
step S12, calculating a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, wherein the second coil temperature is used for representing an expected coil temperature for wireless charging;
and step S13, performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result.
In step S11, in the wireless charging process of the target vehicle, the test mode of the coil temperature and the system equivalent impedance may be an on-line mode of the entire vehicle or an off-line mode of the entire vehicle.
Specifically, the on-line test mode of the whole vehicle is as follows: and in the wireless charging process of the target vehicle, testing the coil temperature and the system equivalent impedance in real time. In the on-line test mode of the whole vehicle, the coil temperature is also called as the first coil temperature, and the system equivalent impedance is also called as the target impedance. The first coil temperature represents a real-time coil temperature of the target vehicle for wireless charging, and similarly, the target impedance represents a real-time system equivalent impedance of the target vehicle for wireless charging. For example, the system sets a certain time period to perform coil temperature and system equivalent impedance tests on a target vehicle being wirelessly charged, wherein the certain time period is set by a designer according to actual conditions.
Specifically, the off-line test mode of the whole vehicle is as follows: in the target vehicle wireless charging process, charging is carried out at rated power and testing is carried out in the process. In the whole vehicle offline testing mode, the coil temperature is also called the calibration coil temperature, and the system equivalent impedance is also called the calibration impedance. The calibration coil temperature represents a coil temperature when the target vehicle is charged at the rated power, and similarly, the calibration impedance represents a system equivalent impedance when the target vehicle is charged at the rated power. For example, the off-line detection mode of the whole vehicle is usually to wirelessly charge a target vehicle for the first time to perform a test.
And wireless charging calibration data comprising a calibration coil temperature and a calibration impedance of the target vehicle. And wireless charging state information indicating a target correspondence relationship of the target vehicle. And the target corresponding relation of the target vehicle is used for determining the corresponding relation between the calibration coil temperature and the calibration impedance, namely the corresponding relation between the coil temperature of the target vehicle and the system equivalent impedance. For example, the target correspondence of the target vehicle is in a ratio manner.
In step S12, a target correspondence relationship of the target vehicle is obtained based on the wireless charging calibration data. And substituting the target impedance into the target corresponding relation according to the target corresponding relation of the target vehicle, and taking the obtained temperature value as the second coil temperature. And a second coil temperature representing an expected coil temperature of the target vehicle for wireless charging, i.e., a theoretical value representing the coil temperature of the target impedance in the target correspondence relationship of the target vehicle. The first coil temperature represents a real-time coil temperature at which the target vehicle is wirelessly charged, that is, an actual coil temperature at which the target vehicle is wirelessly charged.
In step S13, a coil theoretical temperature obtained by substituting the actual coil temperature and the target impedance into the target correspondence relationship of the target vehicle is obtained from the first coil temperature and the second coil temperature, that is, from the target vehicle when performing wireless charging. And performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result. And adjusting the wireless charging of the target vehicle, wherein the adjustment is needed and the adjustment is not needed, the wireless charging power of the target vehicle is reduced to continue charging if the adjustment is needed, and the original wireless charging power of the target vehicle is kept to continue charging if the adjustment is not needed.
According to the steps S11 to S13, the wireless charging calibration data, the first coil temperature and the target impedance of the target vehicle are obtained, and then the second coil temperature of the target vehicle is obtained through calculation based on the wireless charging calibration data and the target impedance, so that the target vehicle is subjected to wireless charging adjustment according to the first coil temperature and the second coil temperature, and a target charging result is obtained, and the purpose of performing wireless charging protection based on the coil temperature of the wireless charging vehicle and the system equivalent impedance is achieved, therefore, the technical effects of accurately identifying wireless charging abnormity and improving the reliability of a wireless charging protection system at low cost are achieved, and the technical problems of low detection accuracy and poor reliability of a method for performing wireless charging protection by detecting the temperature of a vehicle-mounted coil in the prior art are solved.
Optionally, the vehicle wireless charging protection method includes: the wireless charging calibration data comprises a calibration coil temperature and a calibration impedance corresponding to the target vehicle, wherein the calibration coil temperature is the coil temperature when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test, and the calibration impedance is the system equivalent impedance when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test.
Optionally, in step S11, the obtaining of the first coil temperature and the target impedance of the target vehicle further comprises the following method steps:
step S111, acquiring a first coil temperature by using a coil temperature sensor of a target vehicle;
step S112, acquiring real-time coil voltage data by using a voltage detector of the target vehicle;
step S113, acquiring coil real-time current data by using a current detector of a target vehicle;
and step S114, calculating based on the coil real-time voltage data and the coil real-time current data to obtain target impedance.
In steps S111 to S114, during the wireless charging process of the target vehicle, the first coil temperature, the coil real-time voltage data and the coil real-time current data are obtained through the coil temperature sensor, the voltage detector and the current detector of the target vehicle. And calculating based on the real-time voltage data and the real-time current data of the coil to obtain target impedance representing the equivalent impedance of the real-time system. For example, Z is U/I, where Z represents the system equivalent impedance, U represents the coil output voltage, and I represents the coil output current. And substituting the coil real-time voltage data and the coil real-time current data into the target impedance according to the Z-U/I.
According to the steps S111 to S114, the purpose of obtaining the target impedance representing the equivalent impedance of the real-time system is achieved by obtaining the first coil temperature, the coil real-time voltage data and the coil real-time current data and then calculating according to the coil real-time voltage data and the coil real-time current data, so that the technical effect of obtaining the second coil temperature by utilizing the target impedance to perform subsequent calculation is achieved, and the technical problem of low detection accuracy in the process of identifying whether the coil temperature of the target vehicle has the overheating abnormality or not in the traditional method is solved.
Optionally, in step S12, the step of calculating the second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance further includes the following steps:
step S121, determining a target corresponding relation of a target vehicle based on the calibration coil temperature and the calibration impedance in the wireless charging calibration data, wherein the target corresponding relation is used for determining the corresponding relation between the coil temperature of the target vehicle and the system equivalent impedance;
and step S122, determining the second coil temperature of the target vehicle corresponding to the target impedance according to the target corresponding relation.
In step S121, a target correspondence relationship of the target vehicle is determined based on the calibration coil temperature and the calibration impedance. And the target corresponding relation of the target vehicle is used for determining the corresponding relation between the calibration coil temperature and the calibration impedance, namely the corresponding relation between the coil temperature of the target vehicle and the system equivalent impedance.
In step S122, the target impedance is substituted into the target correspondence relationship according to the target correspondence relationship of the target vehicle, and the obtained temperature value is used as the second coil temperature.
Through the steps S121 to S122, the corresponding relation between the temperature of the coil and the calibrated impedance is obtained through the calibration of the temperature of the coil and the calibrated impedance, and then the purpose of obtaining the temperature of the second coil is achieved according to the corresponding relation between the target impedance and the temperature of the calibrated coil and the calibrated impedance, so that the technical effect of obtaining the adjustment information of the target vehicle in the subsequent comparison of the temperature of the second coil and the temperature of the first coil is achieved, and the technical problem of insufficient wireless charging protection of the vehicle-mounted coil is solved.
Optionally, in step S13, performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature, and obtaining the target charging result further includes the following method steps:
step S131, comparing and analyzing based on a first preset threshold, a second preset threshold, a first coil temperature and a second coil temperature to obtain wireless charging adjustment information, wherein the first preset threshold is used for determining a safe value range of the coil temperature when the target vehicle is wirelessly charged, and the second preset threshold is used for determining a safe difference value range between a real-time coil temperature and an expected coil temperature when the target vehicle is wirelessly charged;
and step S132, performing wireless charging adjustment on the target vehicle according to the wireless charging adjustment information to obtain a target charging result.
In step S131, the wireless charging adjustment information is obtained by comparing and analyzing the first coil temperature and the first preset threshold, and by analyzing a difference between the first coil temperature and the second coil temperature, and then by comparing and analyzing the difference and the second preset threshold. The first preset threshold value is compared with the first coil temperature and used for determining the safe value range of the coil temperature when the target vehicle is wirelessly charged. And the second preset threshold value is compared with the difference value between the first coil temperature and the second coil temperature and is used for determining the safe difference value range between the real-time coil temperature and the expected coil temperature when the target vehicle is wirelessly charged.
In step S132, the target vehicle is adjusted wirelessly according to the wireless charging adjustment information, and a target charging result is obtained. And adjusting the wireless charging of the target vehicle, wherein the adjustment is needed and the adjustment is not needed, the wireless charging power of the target vehicle is reduced to continue charging if the adjustment is needed, and the original wireless charging power of the target vehicle is kept to continue charging if the adjustment is not needed.
Through the steps S131 to S132, the purpose of obtaining the wireless charging adjustment information is achieved through the comparison and analysis between the first coil temperature and the first preset threshold value and the difference analysis between the first coil temperature and the second coil temperature, and then the difference analysis and the comparison and analysis between the first coil temperature and the second preset threshold value, so that the technical effect that the target vehicle can perform corresponding adjustment according to the wireless charging adjustment information is achieved, and the technical problem that the safety of the target vehicle is not enough in the process of obtaining the target charging result is solved.
Optionally, in step S131, the step of obtaining the wireless charging adjustment information based on the comparison and analysis of the first preset threshold, the second preset threshold, the first coil temperature, and the second coil temperature further includes the following steps:
step S1311, in response to that the first coil temperature is not smaller than a first preset threshold, generating first adjustment information, where the first adjustment information is used to determine that wireless charging power of a target vehicle corresponding to the first coil temperature is reduced according to a first preset adjustment rule;
step S1312, responding to the first coil temperature being smaller than a first preset threshold, and performing difference analysis on the first coil temperature and the second coil temperature according to a second preset threshold to generate a difference analysis result;
step 1313, obtaining wireless charging adjustment information according to the first adjustment information and the difference analysis result.
In step S1311, when the first coil temperature is not less than the first preset threshold, first adjustment information is generated. The first adjustment information is used for determining that the wireless charging power of the target vehicle is reduced according to a first preset adjustment rule. The first preset adjustment rule is used for reducing the wireless charging power of the target vehicle until the temperature of a first coil of the target vehicle is reduced to a certain level. After the target vehicle is adjusted according to the first preset adjustment rule, the process goes to step S1312. For example, the first preset adjustment rule is that the wireless charging power of the target vehicle is reduced until the temperature of the first coil of the target vehicle is reduced to a recovery threshold, and the specific value of the recovery threshold is set by a designer according to the actual situation. Typically, the recovery threshold is less than a first preset threshold.
In step S1312, when the first coil temperature is lower than the first preset threshold, a difference analysis between the first coil temperature and the second coil temperature is obtained by comparing the first coil temperature and the second coil temperature, and then the difference analysis is compared with the second preset threshold to generate a difference analysis result.
In step S1313, wireless charging adjustment information is obtained according to the first adjustment information and the difference analysis result. The wireless charging adjustment information comprises two types of information of adjustment and non-adjustment, wherein the wireless charging power of the target vehicle is reduced to continue charging if the information is required to be adjusted, and the original wireless charging power of the target vehicle is kept to continue charging if the information is not required to be adjusted.
Through steps 1311 to 1313, a difference value is generated through comparison between the first coil temperature and the first preset threshold value and comparison between the first coil temperature and the second coil temperature, and the difference value is further compared with the second preset threshold value, so that the purpose of obtaining wireless charging adjustment information of the target vehicle is achieved, the technical effect that the subsequent target vehicle is adjusted according to the wireless charging adjustment information is achieved, and the technical problem that wireless charging of a vehicle-mounted coil is not safe enough is solved.
Optionally, in step S1312, performing a difference analysis on the first coil temperature and the second coil temperature according to a second preset threshold, and generating a difference analysis result further includes the following steps:
step S13121, calculating a difference value between the first coil temperature and the second coil temperature to obtain a calculation result;
step 13122, in response to that the calculation result is not smaller than a second preset threshold, generating second adjustment information, where the second adjustment information is used to determine that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a second preset adjustment rule;
step 13123, in response to that the calculation result is smaller than a second preset threshold, generating holding information, wherein the holding information is used for determining that the target vehicle is in a wireless charging safety state and does not need to be subjected to wireless charging adjustment;
step S13124 determines a difference analysis result based on the second adjustment information and the holding information.
In step S13121, a difference between the first coil temperature and the second coil temperature is calculated.
In step S13122, when the difference between the first coil temperature and the second coil temperature is not smaller than a second preset threshold, second adjustment information is generated. And second adjustment information for determining to reduce the wireless charging power of the target vehicle according to a second preset adjustment rule. And a second preset adjustment rule, namely reducing the wireless charging power of the target vehicle until the difference value between the first coil temperature and the second coil temperature of the target vehicle is smaller than a second preset threshold value.
In step S13123, when the difference between the first coil temperature and the second coil temperature is smaller than a second preset threshold, hold information is generated. Information is maintained to determine that the target vehicle is in a safe state for wireless charging without wireless charging adjustment.
In step S13124, a difference between the first coil temperature and the second coil temperature is determined according to the second adjustment information and the holding information, and the difference is compared with a second preset threshold to generate a difference analysis result. The result of the difference analysis is second adjustment information or hold information.
Through steps 13121 to 13124, the difference between the first coil temperature and the second coil temperature is calculated, the difference is compared with a second preset threshold, and a difference analysis result of second adjustment information or retention information is obtained through the comparison result, so that the technical effect that a subsequent target vehicle correspondingly adjusts the target vehicle according to the difference analysis result is achieved, and the technical problem that wireless charging of a vehicle-mounted coil is not safe enough is solved.
Fig. 2 is a schematic diagram of a process for implementing wireless charging protection of a vehicle according to an embodiment of the present invention, as shown in fig. 2:
optionally, the vehicle wireless charging protection process involves: primary side subassembly (power transmitting coil), on-vehicle subassembly and power battery.
A primary side component (e.g., a power transmitting coil) to generate electricity.
And the vehicle-mounted component comprises a secondary side component (such as a power receiving coil), a vehicle-mounted power component and a vehicle-mounted communication control component.
The vehicle-mounted power assembly further comprises: the device comprises a voltage detection assembly, a current detection assembly, a temperature detection assembly, a rectification assembly and a control driving assembly.
And the secondary side component (such as a power receiving coil) is used for receiving the wireless power transmission of the primary side component.
And the voltage detection component is used for detecting the voltage of the secondary side component.
And the current detection assembly is used for detecting the current of the secondary side assembly.
And the temperature detection assembly is used for detecting the temperature of the secondary side assembly coil.
And the rectifying component is used for obtaining voltage and current values through the voltage detection component and the current detection component and calculating to obtain the equivalent impedance of the system.
The control driving assembly is used for acquiring the voltage, the current and the coil temperature of the secondary side assembly obtained from the voltage detection assembly, the current detection assembly and the temperature detection assembly; and is also used for obtaining the system equivalent impedance in the rectifying component.
And the vehicle-mounted communication control assembly is used for acquiring voltage, current, coil temperature and system equivalent impedance information in the control driving assembly.
And the vehicle-mounted communication control assembly calculates to obtain the corresponding relation between the coil temperature and the system equivalent impedance during the whole vehicle offline test, namely the initial wireless charging, and downloads the coil temperature and the system equivalent impedance serving as wireless charging calibration data into the vehicle-mounted communication control assembly. And wireless charging calibration data, wherein the coil temperature is used as the calibration coil temperature, and the system equivalent impedance is used as the calibration impedance.
And the vehicle-mounted communication control assembly downloads a first preset threshold and a second preset threshold which are set by a designer.
And the vehicle-mounted communication control assembly is used for performing on-line test on the whole vehicle, namely, in the wireless charging process for the non-initial time and the wireless charging process again, and the coil temperature and the system equivalent impedance acquired by controlling the driving assembly are used as the first coil temperature and the target impedance. And substituting the target impedance into the corresponding relation between the temperature of the calibration coil and the calibration impedance in the wireless charging calibration data to obtain the temperature of the second coil of the target impedance under the corresponding relation. Comparing the temperature of the first coil with a first preset threshold, when the temperature of the first coil is not less than the first preset threshold, reducing the power of the system to operate until the temperature of the first coil is reduced to a safety threshold, and then comparing the difference value between the temperature of the first coil and the temperature of the second coil with a second preset threshold, wherein the safety threshold is usually less than the first preset threshold and is set by a designer according to the actual situation; when the temperature of the first coil is smaller than the first safety threshold, calculating a difference value between the temperature of the first coil and the temperature of the second coil, comparing the difference value with a second preset threshold, when the difference value is not smaller than the second preset threshold, operating the power until the difference value is smaller than the second preset threshold by the system, and when the difference value is smaller than the second preset threshold, keeping the original power to operate continuously without adjusting the system.
And the power battery is used for storing electric energy obtained by wirelessly charging the primary side assembly through the secondary side assembly.
Fig. 3 is a specific example schematic diagram of a vehicle wireless charging protection method according to an embodiment of the present invention, as shown in fig. 3, the method includes the following steps:
optionally, in the vehicle wireless charging protection method, T1 is a first coil temperature, T2 is a second coil temperature, TP is a coil over-temperature protection threshold, which is equivalent to the first preset threshold, the maximum error value is equivalent to the second preset threshold, and TH is a safety threshold.
Optionally, according to the actual application scenario, the value of TP is preset to 100 ℃, the maximum error value is preset to 5 ℃, and TH is preset to 95 ℃.
In step S31, it is determined whether the system is initially started, the initial start is transferred to step S32, and the process is transferred to step S33 when the system is restarted without the initial start.
And step S32, the wireless charging function is started for the first time, the target corresponding relation between the calibration coil temperature T and the calibration impedance Z is determined, and T and Z are downloaded to the vehicle-mounted communication control component as wireless charging calibration data.
Step S33, the wireless charging function is restarted, and the system outputs the rated power. The vehicle-mounted communication control assembly obtains the first coil temperature T1, the target impedance Z1, inquires wireless charging calibration data, and substitutes Z1 according to the target corresponding relation of T and Z to obtain the second coil temperature T2 corresponding to Z1.
In step S34, it is determined whether T1 is smaller than TP, and the process goes to step S35 when T1 is not smaller than TP, and goes to step S37 when T1 is smaller than TP.
And step S35, reducing the system power.
In step S36, if T1 is smaller than TH and T1 is not smaller than TH, go to step S35, and if T1 is smaller than TH, go to step S37.
Step S37, determine whether the difference between T1 and T2 is smaller than the maximum error value, and the difference between T1 and T2 is not smaller than the maximum error value, go to step S38, and the difference between T1 and T2 is smaller than the maximum error value, so the system is not adjusted, and the charging is finished.
And step S38, reducing the system power.
When the whole vehicle is charged wirelessly for the first time, the temperature T of a calibration coil and the calibration impedance Z of the system are obtained, and the T and the Z are used as wireless charging calibration data and downloaded to a vehicle-mounted communication control assembly. When the whole vehicle is charged wirelessly again, the vehicle-mounted communication control assembly obtains the first coil temperature T1 and the real-time system equivalent impedance Z1 through controlling the driving assembly, and the first coil temperature T1 and the real-time system equivalent impedance Z1 are substituted into Z1 according to the target corresponding relation between T and Z to obtain the second coil temperature T2 corresponding to Z1. When T1 is less than 100 ℃ and the difference between T1 and T2 is less than the maximum error value of 5 ℃, the system works normally. When T1 is not less than 100 ℃, the vehicle-mounted communication control assembly control system reduces the output power by 1kW according to the temperature rise of the coil by 1 ℃ until T1 is less than TH, namely 95 ℃. When the difference between T1 and T2 is greater than the maximum error value by 5 ℃, the vehicle-mounted communication control assembly control system reduces the output power by 1kW according to the rise of the coil temperature by 1 ℃ until the difference between T1 and T2 is less than the maximum error value by 5 ℃.
Fig. 4 is a block diagram of a vehicle wireless charging protection device according to an embodiment of the present invention, and as shown in fig. 4, the vehicle wireless charging protection device 400 includes:
the obtaining module 401 is configured to obtain wireless charging calibration data of a target vehicle, a first coil temperature and a target impedance, where the wireless charging calibration data is used to determine wireless charging state information obtained through a test when the target vehicle is completely off-line, the first coil temperature is used to indicate a real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used to indicate a real-time system equivalent impedance of the target vehicle for wireless charging.
And a calculating module 402, configured to calculate a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, where the second coil temperature is used to represent an expected coil temperature for performing wireless charging.
And an adjusting module 403, configured to perform wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature, so as to obtain a target charging result.
Optionally, in the above vehicle wireless charging protection device, the wireless charging calibration data includes: the calibration method comprises the steps of calibrating coil temperature and calibration impedance corresponding to a target vehicle, wherein the calibration coil temperature is the coil temperature when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test, and the calibration impedance is the system equivalent impedance when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test.
Optionally, the obtaining module 401 is further configured to obtain a first coil temperature by using a coil temperature sensor of the target vehicle; acquiring real-time voltage data of a coil by using a voltage detector of a target vehicle; acquiring real-time current data of a coil by using a current detector of a target vehicle; and calculating based on the coil real-time voltage data and the coil real-time current data to obtain the target impedance.
Optionally, the calculation module 402 is further configured to determine a target correspondence of the target vehicle based on the calibration coil temperature and the calibration impedance in the wireless charging calibration data, where the target correspondence is used to determine a correspondence between the coil temperature of the target vehicle and the system equivalent impedance; and determining the second coil temperature of the target vehicle corresponding to the target impedance according to the target corresponding relation.
Optionally, the adjusting module 403 is further configured to perform comparison and analysis based on a first preset threshold, a second preset threshold, a first coil temperature and a second coil temperature to obtain wireless charging adjustment information, where the first preset threshold is used to determine a safe value range of the coil temperature when the target vehicle is wirelessly charged, and the second preset threshold is used to determine a safe difference range between a real-time coil temperature and an expected coil temperature when the target vehicle is wirelessly charged; and performing wireless charging adjustment on the target vehicle according to the wireless charging adjustment information to obtain a target charging result.
Optionally, the adjusting module 403 is further configured to generate first adjusting information in response to that the first coil temperature is not less than a first preset threshold, where the first adjusting information is used to determine that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a first preset adjusting rule; in response to the first coil temperature being smaller than a first preset threshold, performing difference analysis on the first coil temperature and the second coil temperature according to a second preset threshold to generate a difference analysis result; and obtaining wireless charging adjustment information according to the first adjustment information and the difference analysis result.
Optionally, the adjusting module 403 is further configured to calculate a difference between the first coil temperature and the second coil temperature to obtain a calculation result; responding to a calculation result not less than a second preset threshold value, and generating second adjustment information, wherein the second adjustment information is used for determining that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a second preset adjustment rule; responding to the calculation result smaller than a second preset threshold value, and generating holding information, wherein the holding information is used for determining that the target vehicle is in a wireless charging safety state and does not need to be subjected to wireless charging adjustment; and determining a difference analysis result according to the second adjustment information and the holding information.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
An embodiment of the present invention further provides a non-volatile storage medium, in which a computer program is stored, wherein the computer program is configured to perform the steps in any of the method embodiments described above when executed.
Alternatively, in the present embodiment, the above-mentioned nonvolatile storage medium may be configured to store a computer program for executing the steps of:
and S1, acquiring wireless charging calibration data, a first coil temperature and a target impedance of the target vehicle, wherein the wireless charging calibration data is used for determining wireless charging state information obtained by testing when the target vehicle is completely off-line, the first coil temperature is used for representing the real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used for representing the real-time system equivalent impedance of the target vehicle for wireless charging.
And S2, calculating a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, wherein the second coil temperature is used for representing the expected coil temperature for wireless charging.
And S3, performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result.
Optionally, in this embodiment, the nonvolatile storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
An embodiment of the present invention further provides a wireless charging vehicle, including an onboard memory for storing a program and an onboard processor for running the program, wherein the program is configured to execute the vehicle wireless charging protection method in any one of the above.
Optionally, in this embodiment, the onboard processor may be configured to execute the following steps by a computer program:
and S1, acquiring wireless charging calibration data, a first coil temperature and a target impedance of the target vehicle, wherein the wireless charging calibration data is used for determining wireless charging state information obtained by testing when the target vehicle is completely off-line, the first coil temperature is used for representing the real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used for representing the real-time system equivalent impedance of the target vehicle for wireless charging.
And S2, calculating a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, wherein the second coil temperature is used for representing the expected coil temperature for wireless charging.
And S3, performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed technical contents can be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A vehicle wireless charging protection method is characterized by comprising the following steps:
the method comprises the steps of obtaining wireless charging calibration data, a first coil temperature and a target impedance of a target vehicle, wherein the wireless charging calibration data are used for determining wireless charging state information obtained by testing when the target vehicle is off the line in the whole process, the first coil temperature is used for representing the real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used for representing the real-time system equivalent impedance of the target vehicle for wireless charging;
calculating a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, wherein the second coil temperature is used for representing an expected coil temperature for wireless charging;
and performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result.
2. The method of claim 1, wherein the wireless charging calibration data comprises: the calibration coil temperature and the calibration impedance correspond to the target vehicle, wherein the calibration coil temperature is the coil temperature when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test, and the calibration impedance is the system equivalent impedance when the target vehicle is wirelessly charged at rated power in the whole vehicle offline test.
3. The method of claim 1, wherein obtaining a first coil temperature and a target impedance of a target vehicle comprises:
acquiring the first coil temperature by using a coil temperature sensor of the target vehicle;
acquiring real-time coil voltage data by using a voltage detector of the target vehicle;
acquiring real-time coil current data by using a current detector of the target vehicle;
and calculating based on the coil real-time voltage data and the coil real-time current data to obtain the target impedance.
4. The method of claim 2, wherein calculating a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance comprises:
determining a target corresponding relation of the target vehicle based on the calibration coil temperature and the calibration impedance in the wireless charging calibration data, wherein the target corresponding relation is used for determining the corresponding relation between the coil temperature of the target vehicle and the system equivalent impedance;
and determining a second coil temperature of the target vehicle corresponding to the target impedance according to the target corresponding relation.
5. The method of claim 1, wherein performing wireless charging adjustments for the target vehicle based on the first coil temperature and the second coil temperature, and obtaining a target charging result comprises:
comparing and analyzing the first coil temperature and the second coil temperature based on a first preset threshold value, a second preset threshold value, and obtaining wireless charging adjustment information, wherein the first preset threshold value is used for determining a safe value range of the coil temperature when the target vehicle is wirelessly charged, and the second preset threshold value is used for determining a safe difference value range between the real-time coil temperature and an expected coil temperature when the target vehicle is wirelessly charged;
and performing wireless charging adjustment on the target vehicle according to the wireless charging adjustment information to obtain the target charging result.
6. The method of claim 5, wherein obtaining wireless charging adjustment information based on the comparison analysis of the first preset threshold, the second preset threshold, the first coil temperature, and the second coil temperature comprises:
responding to the fact that the first coil temperature is not smaller than the first preset threshold value, and generating first adjustment information, wherein the first adjustment information is used for determining that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a first preset adjustment rule;
in response to the first coil temperature being smaller than the first preset threshold, performing difference analysis on the first coil temperature and the second coil temperature according to the second preset threshold to generate a difference analysis result;
and obtaining the wireless charging adjustment information according to the first adjustment information and the difference analysis result.
7. The method of claim 6, wherein performing a difference analysis on the first coil temperature and the second coil temperature according to the second preset threshold comprises:
calculating the difference value of the first coil temperature and the second coil temperature to obtain a calculation result;
generating second adjustment information in response to the calculation result not being smaller than a second preset threshold, wherein the second adjustment information is used for determining that the wireless charging power of the target vehicle corresponding to the first coil temperature is reduced according to a second preset adjustment rule;
generating holding information in response to the calculation result being smaller than the second preset threshold, wherein the holding information is used for determining that the target vehicle is in a wireless charging safety state and does not need to be subjected to wireless charging adjustment;
and determining the difference analysis result according to the second adjustment information and the holding information.
8. A vehicle wireless charging protection device, comprising:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring wireless charging calibration data, a first coil temperature and a target impedance of a target vehicle, the wireless charging calibration data is used for determining wireless charging state information obtained by testing when the target vehicle is off line completely, the first coil temperature is used for representing the real-time coil temperature of the target vehicle for wireless charging, and the target impedance is used for representing the real-time system equivalent impedance of the target vehicle for wireless charging;
the calculation module is used for calculating a second coil temperature of the target vehicle based on the wireless charging calibration data and the target impedance, wherein the second coil temperature is used for representing an expected coil temperature for wireless charging;
and the adjusting module is used for performing wireless charging adjustment on the target vehicle according to the first coil temperature and the second coil temperature to obtain a target charging result.
9. A non-volatile storage medium, wherein a computer program is stored in the storage medium, wherein the computer program is configured to execute the vehicle wireless charging protection method according to any one of claims 1 to 7 when running.
10. A wirelessly charged vehicle comprising an onboard memory and an onboard processor, wherein the onboard memory has stored therein a computer program, the onboard processor being arranged to run the computer program to perform the vehicle wireless charge protection method as claimed in any one of claims 1 to 7.
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