CN118137629A - Wireless charging system and method, storage medium and electronic device - Google Patents

Wireless charging system and method, storage medium and electronic device Download PDF

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Publication number
CN118137629A
CN118137629A CN202311858318.9A CN202311858318A CN118137629A CN 118137629 A CN118137629 A CN 118137629A CN 202311858318 A CN202311858318 A CN 202311858318A CN 118137629 A CN118137629 A CN 118137629A
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China
Prior art keywords
circuit
power
wireless charging
secondary side
side circuit
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Pending
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CN202311858318.9A
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Chinese (zh)
Inventor
宫成
李亦非
谷君
王文山
张迎
王芳
张艳妍
沈静
杨亚奇
杨雪菲
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Beijing Dingcheng Hongan Technology Development Co ltd
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
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Beijing Dingcheng Hongan Technology Development Co ltd
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
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Priority to CN202311858318.9A priority Critical patent/CN118137629A/en
Publication of CN118137629A publication Critical patent/CN118137629A/en
Pending legal-status Critical Current

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application discloses a wireless charging system and method, a storage medium and an electronic device, and relates to the field of automobiles, wherein the wireless charging system comprises: the primary side circuit is connected with the power grid and used for transmitting alternating current provided by the power grid to the secondary side circuit; the secondary side circuit is used for converting the electric energy transmitted by the primary side circuit into direct current and charging the vehicle through the direct current; the active circuit is connected in series with the secondary side circuit and is used for providing electric energy for the secondary side circuit so as to adjust the charging efficiency of the wireless charging system for charging the vehicle; through the system, the problem that wireless charging efficiency is reduced due to power fluctuation and the like in the wireless charging process in the prior art is solved.

Description

Wireless charging system and method, storage medium and electronic device
Technical Field
The application relates to the technical field of smart families, in particular to a wireless charging system and method, a storage medium and an electronic device.
Background
Mechanical parking garages are playing an increasingly important role in relieving urban traffic jams, difficult parking and the like. The growth of the new mechanical parking space of the mechanical parking equipment can be seen that the stereo garage industry is developed in a steady way. With the continuous realization and popularization of new energy policies, the holding quantity of new energy vehicles is rapidly increased, the high-speed development of new energy vehicles is in an irreversible trend, the service objects of the stereo garage are not just fuel vehicles, more and more service objects of the new energy vehicles are provided for the new energy vehicles, the users of the stereo garage are not single parking functions, and the mechanical stereo garage and the charging facilities are tightly combined to gradually become the development trend of urban parking lots.
For wireless charging, charging efficiency is one of the most important issues in the wireless charging field, because wireless charging is less efficient than conductive charging, especially when the coils are not well aligned. In addition, electric vehicles are charged in constant current-constant voltage (CC-CV) operation, and the equivalent load resistance varies widely during charging, especially when CV is charged. This makes it difficult for wireless charging systems to achieve global efficiency optimization in charging operations.
Aiming at the problems of wireless charging efficiency reduction and the like caused by power fluctuation and the like in the wireless charging process in the prior art, no effective solution has been proposed yet.
Disclosure of Invention
The embodiment of the application provides a wireless charging system and method, a storage medium and an electronic device, which at least solve the problem that in the prior art, wireless charging efficiency is reduced due to power fluctuation and the like in the wireless charging process.
According to an embodiment of the present application, there is provided a wireless charging system including: the primary side circuit is connected with the power grid and used for transmitting alternating current provided by the power grid to the secondary side circuit; the secondary side circuit is used for converting the electric energy transmitted by the primary side circuit into direct current and charging the vehicle through the direct current; and the active circuit is connected in series with the secondary side circuit and is used for providing electric energy for the secondary side circuit so as to adjust the charging efficiency of the wireless charging system for charging the vehicle.
In an exemplary embodiment, the active circuit is further configured to receive an instant power requirement sent by the secondary circuit, and adjust the power supplied to the secondary circuit according to the instant power requirement, where the instant power requirement is used to indicate a power difference between the primary circuit and the secondary circuit at a current time.
In an exemplary embodiment, the active circuit is further configured to adjust an amount of electrical energy provided to the secondary side circuit based on the power difference if the instantaneous power demand indicates that the power difference is positive; and adjusting the direction of the active circuit for providing the electric energy to the secondary side circuit when the instant power demand indicates that the power difference is negative, and adjusting the electric energy provided to the secondary side circuit according to the absolute value of the power difference.
In an exemplary embodiment, the active circuit is further configured to adjust the amount of power provided to the secondary circuit according to an amount of change in a physical location between the primary circuit and the secondary circuit, where the physical location is used to indicate a relative location between the primary circuit and the secondary circuit, if a change in the physical location is detected.
In an exemplary embodiment, the secondary side circuit further includes: and the demand monitoring unit is used for monitoring the instant power demand of the secondary side circuit and sending the instant power demand to the active circuit, wherein the instant power demand is used for indicating the power difference between the primary side circuit and the secondary side circuit at the current moment.
In an exemplary embodiment, the primary side circuit is further configured to convert the alternating current into a high frequency alternating current and transmit the high frequency alternating current to the secondary side circuit through a primary side coil in the primary side circuit.
In an exemplary embodiment, the secondary side circuit is further configured to receive the high frequency alternating current through a secondary side coil in the secondary side circuit and convert the high frequency alternating current into the direct current.
According to another embodiment of the present application, there is also provided a wireless charging method including: generating electrical energy by a power supply assembly, wherein the power supply assembly is disposed in an active circuit; the secondary side circuit is provided with electric energy to adjust the charging efficiency of the wireless charging system for charging the vehicle.
According to still another aspect of the embodiments of the present application, there is also provided a computer-readable storage medium having a computer program stored therein, wherein the computer program is configured to execute the above-described generation method of scene rule information when running.
According to still another aspect of the embodiments of the present application, there is further provided an electronic device including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the method for generating scene rule information described above through the computer program.
In the embodiment of the application, the alternating current provided by a power grid is transmitted to a secondary side circuit through a primary side circuit in a wireless charging system, then the secondary side circuit converts the alternating current into direct current which can be used for charging a vehicle, and the obtained direct current is used for charging the vehicle; in the process, the active circuit connected in series with the secondary side circuit can provide electric energy for the secondary side circuit, so that the overall charging efficiency of the wireless charging system is adjusted; by adopting the scheme, the constant power output capacity of the output end of the wireless charging system is improved, so that the charging efficiency of the wireless charging system is improved; and further, the problem of wireless charging efficiency reduction caused by power fluctuation and other problems in the wireless charging process in the related technology is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a block diagram of an alternative wireless charging system according to an embodiment of the application;
FIG. 2 is a schematic diagram of power curve variation in an alternative wireless charging system according to an embodiment of the present application;
FIG. 3 is a flow chart of an alternative wireless charging method according to an embodiment of the application;
FIG. 4 is a system architecture diagram of an alternative wireless charging system according to an embodiment of the present application;
Fig. 5 is a system architecture diagram of another alternative wireless charging system according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise 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 the field of wireless charging technology, electromagnetic induction or magnetic resonance principles are currently commonly employed to transfer capabilities, which allow power to be transferred from one device (primary circuit) to another (secondary circuit) without a physical connection. However, this transmission method has the following problems, including:
power fluctuation: wireless charging systems have difficulty maintaining a constant power output for a variety of reasons, such as distance variations, lack thereof, and variations in battery status;
communication delay: in the traditional wireless charging system, the communication speed between the primary side and the secondary side is slower than that of a limited charging system, so that the power regulation response is not sensitive enough, and the power output cannot be regulated in real time to adapt to the change of the load;
it should be noted that a major problem with wireless charging is the slow communication speed between the primary and secondary sides, and this delay results in a time difference between the system detecting a change in power demand and responding to such a change, and this delay makes it difficult to adjust the power output in real time to match the changing demand.
Complex control algorithms: to maintain a constant output of power, existing systems rely on complex control algorithms that require a stable and high-speed communication connection between the primary and secondary sides;
System stability: because of the complexity of the communications and algorithms described above, the system tends to be insufficiently stable in a fast dynamic response, especially in the case of rapid load changes.
In order to solve the above-described problems, a wireless charging system is provided in the present embodiment, which focuses on improving the output-side constant power output capability and improving the system stability; fig. 1 is a block diagram of an alternative wireless charging system according to an embodiment of the application, comprising:
A primary side circuit 11 connected to the power grid for transmitting the alternating current provided by the power grid to a secondary side circuit 12;
A secondary side circuit 12 for converting the electric energy transmitted by the primary side circuit 11 into direct current and charging the vehicle by the direct current;
An active circuit 13 connected in series with the secondary side circuit 12 for supplying electric power to the secondary side circuit 12 to adjust the charging efficiency of the wireless charging system for charging the vehicle.
The wireless charging system of the embodiment can be applied to a scene of wireless charging of an electric automobile, and the existing wireless charging system has the following technical problems in the scene: the current of the primary side and the secondary side is inconsistent due to the problems of the distance change of the primary side and the secondary side, and therefore the charging efficiency of the wireless charging system is reduced.
Through the wireless charging system provided by the embodiment, the electric energy can be provided for the secondary side circuit through the newly-added active circuit, so that the current and the like in the primary secondary side circuit are kept consistent, and the technical effect of improving the charging efficiency of the wireless charging system is achieved.
In the embodiment of the application, the alternating current provided by a power grid is transmitted to a secondary side circuit through a primary side circuit in a wireless charging system, then the secondary side circuit converts the alternating current into direct current which can be used for charging a vehicle, and the obtained direct current is used for charging the vehicle; in the process, the active circuit connected in series with the secondary side circuit can provide electric energy for the secondary side circuit, so that the overall charging efficiency of the wireless charging system is adjusted; by adopting the scheme, the constant power output capacity of the output end of the wireless charging system is improved, so that the charging efficiency of the wireless charging system is improved; and further, the problem of wireless charging efficiency reduction caused by power fluctuation and other problems in the wireless charging process in the related technology is solved.
Optionally, the active circuit is further configured to receive an instant power requirement sent by the secondary circuit, and adjust electrical energy provided to the secondary circuit according to the instant power requirement, where the instant power requirement is used to indicate a power difference between the primary circuit and the secondary circuit at a current moment.
The secondary side circuit can monitor the power difference between the primary side and the secondary side in real time and send the instant power demand to the active circuit, and the active circuit can automatically adjust the electric energy supplied to the secondary side according to the instant power demand of the secondary side, so that quick power adjustment is realized, and the charging efficiency is further improved.
Further, the active circuit is further configured to adjust an amount of electrical energy provided to the secondary side circuit according to the power difference if the instant power demand indicates that the power difference is positive; and adjusting the direction of the active circuit for providing the electric energy to the secondary side circuit when the instant power demand indicates that the power difference is negative, and adjusting the electric energy provided to the secondary side circuit according to the absolute value of the power difference.
The active circuit is used for guaranteeing that the output power of the wireless charging system is constant, in the wireless charging process, the secondary side is influenced by the voltage of the vehicle-mounted battery, the voltage rises along with the voltage, the primary side voltage is difficult to rise along with the synchronous rise, the primary side current and the secondary side current are inevitably inconsistent, if the primary side voltage is obviously lower than or higher than the secondary side voltage, the current difference of the primary side and the secondary side is obvious, the self R1 heating is greatly influenced, and when the wireless charging system works in an energy absorption mode, the working efficiency of the whole machine is shown in the following formula:
From this formula, it can be seen that the fraction involved in R1 should be reduced as much as possible, i.e./>, in order to increase the working efficiency Should be as small as possible; therefore, the primary side and secondary side currents are required to be kept the same, so that the working efficiency (namely the charging efficiency) can be improved; through the wireless charging system, the active circuit can quickly adjust the electric energy supplied to the secondary side circuit according to the instant power demand after receiving the instant power demand indicating the primary secondary side power difference.
The power supplied to the secondary side circuit may be regulated by voltage or current, and the present application is not limited thereto.
Optionally, the active circuit is further configured to adjust the amount of electrical energy provided to the secondary side circuit according to the amount of change of the physical position when a change of the physical position between the primary side circuit and the secondary side circuit is detected, where the physical position is used to indicate a relative position between the primary side circuit and the secondary side circuit.
The relative positional shift between the primary and secondary sides also causes power variations, so that the active circuit in the present application can also determine the amount of power supplied to the secondary side circuit by monitoring the physical position between the primary and secondary side circuits; physical location, i.e. the relative position of the two; when a change in physical position between the primary and secondary sides is detected, the system can automatically adjust the power output to compensate for the change in energy transfer efficiency due to the positional offset.
By the embodiment, the reduction of energy transmission efficiency caused by inaccurate alignment or distance change can be automatically compensated, the self-adjusting mechanism reduces energy loss, and high efficiency in the charging process is ensured, particularly when charging is switched between different electric vehicles; and reduces the need for precise alignment, as the system is able to compensate for slight alignment errors, thus reducing the need for vehicle parking position accuracy, which is particularly advantageous to the average user because it simplifies the charging process, who does not have to worry about not parking the vehicle precisely on the charging pad.
Optionally, the secondary side circuit further includes: and the demand monitoring unit is used for monitoring the instant power demand of the secondary side circuit and sending the instant power demand to the active circuit, wherein the instant power demand is used for indicating the power difference between the primary side circuit and the secondary side circuit at the current moment.
The secondary circuit comprises a high-sensitivity monitoring system, namely the demand monitoring unit, and is used for detecting small changes of power demand, such as battery state, load change and the like in real time.
It should be noted that, although the present application focuses on reducing the dependence on primary-secondary communication, for overall optimization, the wireless charging system of the present application further includes an improved communication protocol that reduces delay by minimizing data transmission, thereby enabling fast feedback of the adjustment signal.
Meanwhile, the application optimizes the algorithm in the system to reduce complexity and improve response speed, and the algorithm utilizes the quick adjustment capability of the secondary side series power supply to simplify the power matching process between the primary side and the secondary side.
Through the above embodiment, the active power supply is introduced, so that the current of the primary side and the secondary side is kept consistent (i.e. the power is consistent), thereby keeping higher working efficiency, as shown in fig. 2, fig. 2 shows a power change curve, P S is input power, P A is power of an active circuit, P B is output power, and the input power can keep constant output power after the compensation of the power of the active circuit, thereby improving the charging efficiency of the wireless charging system.
According to the scheme, the secondary side circuit is connected with the active circuit in series to realize quick response to power requirements, and compared with a traditional wireless charging system which relies on slow communication between the primary side and the secondary side, the system can instantaneously adjust output power so as to adapt to real-time change of the charging state of the electric automobile; and because the secondary side serial power supply can be independent of the primary side for power adjustment, the system can still keep stable power output when the communication between the primary side and the secondary side is interfered or delayed, thereby providing more efficient and stable charging experience.
It should be noted that such a charging system with higher stability is important to ensure the health of the battery of the electric vehicle and to extend its service life during the charging process.
Optionally, the primary side circuit is further configured to convert the alternating current into a high frequency alternating current, and transmit the high frequency alternating current to the secondary side circuit through a primary side coil in the primary side circuit.
The primary side circuit and the secondary side circuit are subjected to electric energy interaction through the coil, in order to reduce loss when electric energy passes through the coil, the primary side circuit can firstly convert alternating current transmitted by a power grid into high-frequency alternating current, and then the high-frequency alternating current is transmitted to the secondary side circuit through the primary side coil and the secondary side coil.
Optionally, the secondary side circuit is further configured to receive the high-frequency ac power through a secondary side coil in the secondary side circuit, and convert the high-frequency ac power into the dc power.
The secondary circuit is connected to the vehicle, so that the secondary circuit converts the received high-frequency alternating current into direct current to supply the vehicle with the direct current for charging.
In an alternative embodiment, the present application proposes an alternative wireless charging method, as shown in fig. 3, and fig. 3 is a flowchart of an alternative wireless charging method according to an embodiment of the present application, including the following steps:
Step S302, generating electric energy through a power supply component, wherein the power supply component is arranged in an active circuit;
Step S304, providing electric energy to the secondary side circuit to adjust the charging efficiency of the wireless charging system for charging the vehicle.
Through the wireless charging system, the active circuit provides electric energy for the secondary side circuit through the power supply component in the circuit, and the electric energy is used for ensuring the consistency of the current in the primary secondary side circuit, so that the charging efficiency of the wireless charging system is improved.
Specifically, the active circuit provides power to the secondary side circuit by: and receiving an instant power demand sent by a secondary side circuit, and adjusting the electric energy provided for the secondary side circuit according to the instant power demand, wherein the instant power demand is used for indicating the power difference between a primary side circuit and the secondary side circuit at the current moment.
The secondary side circuit can monitor the power difference between the primary side and the secondary side in real time and send the instant power demand to the active circuit, and the active circuit can automatically adjust the electric energy supplied to the secondary side according to the instant power demand of the secondary side, so that quick power adjustment is realized, and the charging efficiency is further improved.
Optionally, the method further comprises: adjusting the amount of electrical energy provided to the secondary side circuit according to the power difference if the instant power demand indicates that the power difference is positive; and adjusting the direction of the active circuit for providing the electric energy to the secondary side circuit when the instant power demand indicates that the power difference is negative, and adjusting the electric energy provided to the secondary side circuit according to the absolute value of the power difference.
The active circuit is used for guaranteeing that the output power of the wireless charging system is constant, in the wireless charging process, the secondary side is influenced by the voltage of the vehicle-mounted battery, the voltage rises along with the voltage, the primary side voltage is difficult to rise along with the synchronous rise, the primary side current and the secondary side current are inevitably inconsistent, if the primary side voltage is obviously lower than or higher than the secondary side voltage, the current difference of the primary side and the secondary side is obvious, the self R1 heating is greatly influenced, and when the wireless charging system works in an energy absorption mode, the working efficiency of the whole machine is shown in the following formula:
From this formula, it can be seen that the fraction related to R1 should be reduced as much as possible, i.e. Should be as small as possible; therefore, the primary side and secondary side currents are required to be kept the same, so that the working efficiency (namely the charging efficiency) can be improved; through the wireless charging system, the active circuit can quickly adjust the electric energy supplied to the secondary side circuit according to the instant power demand after receiving the instant power demand indicating the primary secondary side power difference.
The power supplied to the secondary side circuit may be regulated by voltage or current, and the present application is not limited thereto.
Optionally, the active circuit may further provide power to the secondary side circuit by: and under the condition that the physical position between the primary side circuit and the secondary side circuit is detected to be changed, adjusting the electric energy supplied to the secondary side circuit according to the change amount of the physical position, wherein the physical position is used for indicating the relative position between the primary side circuit and the secondary side circuit.
The relative positional shift between the primary and secondary sides also causes power variations, so that the active circuit in the present application can also determine the amount of power supplied to the secondary side circuit by monitoring the physical position between the primary and secondary side circuits; physical location, i.e. the relative position of the two; when a change in physical position between the primary and secondary sides is detected, the system can automatically adjust the power output to compensate for the change in energy transfer efficiency due to the positional offset.
By the embodiment, the reduction of energy transmission efficiency caused by inaccurate alignment or distance change can be automatically compensated, the self-adjusting mechanism reduces energy loss, and high efficiency in the charging process is ensured, particularly when charging is switched between different electric vehicles; and reduces the need for precise alignment, as the system is able to compensate for slight alignment errors, thus reducing the need for vehicle parking position accuracy, which is particularly advantageous to the average user because it simplifies the charging process, who does not have to worry about not parking the vehicle precisely on the charging pad.
By the wireless charging method, the instant power adjustment can be realized by connecting the secondary side with the active circuit in series, and the quick response mechanism is important for maintaining constant power output, especially under the condition of poor alignment of the primary side and the secondary side or frequent environmental change.
Fig. 4 is a schematic diagram of a system architecture of an alternative wireless charging system according to an embodiment of the present application, where the wireless charging system includes a primary side circuit and a secondary side circuit, and a charging transmission power formula for the wireless charging circuit is as follows:
Where ω is the operating frequency of the circuit, M is the mutual inductance of the two coupled coils, I1 and I2 are the magnitudes of the coil currents, Is the phase difference between the two circuits.
If the system is operated at a fixed frequency of 85khz, it is difficult to maintain a very constant output P once the mutual inductances M, I, I2, and phi 12 change. The following are several reasons:
power fluctuation: power output in a wireless charging system is affected by a number of factors, including battery charge, distance between devices, relative position, and alignment accuracy, which can lead to instability of power output;
communication delay: in the existing wireless charging system, the problem of power fluctuation caused by inaccurate distance and alignment is further amplified by communication delay between a primary side and a secondary side, so that the system is difficult to quickly adapt to load change;
Complex control algorithms: in order to attempt to stabilize the power output, wireless charging systems typically employ complex control algorithms and communication protocols, which not only increase the complexity of the system, but may also lead to slow response in practical applications;
system stability: system stability is challenged by communication and algorithm complexity, especially in the context of rapid load changes;
Primary and secondary edge position shift fluctuation: in addition to the above challenges, the relative positional shift between the primary and secondary sides can also cause power conversion, especially when the device is moving or the position in the environment of use changes, such shift fluctuations can lead to reduced energy transfer efficiency and unstable power output, increasing the difficulty of maintaining a constant power output.
In order to solve the above problems, the present application is improved based on the wireless charging system shown in fig. 4, wherein an active circuit is superimposed in a secondary circuit and connected in series with an original secondary circuit to achieve improvement of overall efficiency, and as shown in fig. 5, the wireless charging system shown in fig. 5 includes: primary circuit U S, secondary circuit U A, active circuit U B, the active circuit being in series with the secondary circuit.
The structural design of the system has high universality and adaptability, and can be easily integrated into various electric automobiles and charging equipment; the flexibility makes the system an important technology in the field of wireless charging of electric automobiles, and can adapt to automobiles of different brands and models and various charging environments.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the various embodiments of the present application.
An embodiment of the present application also provides a storage medium including a stored program, wherein the program executes the method of any one of the above.
Alternatively, in the present embodiment, the above-described storage medium may be configured to store program code for performing the steps of:
s1, generating electric energy through a power supply component, wherein the power supply component is arranged in an active circuit;
And S2, providing electric energy for the secondary side circuit so as to adjust the charging efficiency of the wireless charging system for charging the vehicle.
An embodiment of the application also provides an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, where the transmission device is connected to the processor, and the input/output device is connected to the processor.
Alternatively, in the present embodiment, the above-described processor may be configured to execute the following steps by a computer program:
s1, generating electric energy through a power supply component, wherein the power supply component is arranged in an active circuit;
And S2, providing electric energy for the secondary side circuit so as to adjust the charging efficiency of the wireless charging system for charging the vehicle.
Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a removable hard disk, a magnetic disk, or an optical disk, etc., which can store program codes.
Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.
It will be appreciated by those skilled in the art that the modules or steps of the application described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A wireless charging system, comprising:
the primary side circuit is connected with the power grid and used for transmitting alternating current provided by the power grid to the secondary side circuit;
the secondary side circuit is used for converting the electric energy transmitted by the primary side circuit into direct current and charging the vehicle through the direct current;
And the active circuit is connected in series with the secondary side circuit and is used for providing electric energy for the secondary side circuit so as to adjust the charging efficiency of the wireless charging system for charging the vehicle.
2. The wireless charging system of claim 1, wherein the active circuit is further configured to receive an instantaneous power demand sent by the secondary circuit and to adjust the power provided to the secondary circuit based on the instantaneous power demand, wherein the instantaneous power demand is used to indicate a difference in power between the primary circuit and the secondary circuit at a current time.
3. The wireless charging system of claim 2, wherein the active circuit is further configured to adjust the amount of power provided to the secondary circuit based on the power difference if the instantaneous power demand indicates that the power difference is positive; and adjusting the direction of the active circuit for providing the electric energy to the secondary side circuit when the instant power demand indicates that the power difference is negative, and adjusting the electric energy provided to the secondary side circuit according to the absolute value of the power difference.
4. The wireless charging system of claim 1, wherein the active circuit is further configured to adjust an amount of power provided to the secondary circuit based on an amount of change in a physical location between the primary circuit and the secondary circuit in the event that a change in the physical location is detected, wherein the physical location is used to indicate a relative location between the primary circuit and the secondary circuit.
5. The wireless charging system of claim 1, wherein the secondary side circuit further comprises:
And the demand monitoring unit is used for monitoring the instant power demand of the secondary side circuit and sending the instant power demand to the active circuit, wherein the instant power demand is used for indicating the power difference between the primary side circuit and the secondary side circuit at the current moment.
6. The wireless charging system of claim 1, wherein the primary side circuit is further configured to convert the alternating current to a high frequency alternating current and transmit the high frequency alternating current to the secondary side circuit via a primary side coil in the primary side circuit.
7. The wireless charging system of claim 6, wherein the secondary circuit is further configured to receive the high frequency ac power via a secondary coil in the secondary circuit and convert the high frequency ac power to the dc power.
8. A wireless charging method applied to the wireless charging system according to any one of claims 1 to 7, comprising:
generating electrical energy by a power supply assembly, wherein the power supply assembly is disposed in an active circuit;
the secondary side circuit is provided with electric energy to adjust the charging efficiency of the wireless charging system for charging the vehicle.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program when run performs the method of claim 8.
10. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, the processor being arranged to execute the method of claim 8 by means of the computer program.
CN202311858318.9A 2023-12-29 2023-12-29 Wireless charging system and method, storage medium and electronic device Pending CN118137629A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311858318.9A CN118137629A (en) 2023-12-29 2023-12-29 Wireless charging system and method, storage medium and electronic device

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CN118137629A true CN118137629A (en) 2024-06-04

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