CN113022335A - Wireless quick charging system and method for electric automobile - Google Patents
Wireless quick charging system and method for electric automobile Download PDFInfo
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- CN113022335A CN113022335A CN201911349566.4A CN201911349566A CN113022335A CN 113022335 A CN113022335 A CN 113022335A CN 201911349566 A CN201911349566 A CN 201911349566A CN 113022335 A CN113022335 A CN 113022335A
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- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 4
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- 238000010586 diagram Methods 0.000 description 5
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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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- 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
- B60L53/60—Monitoring or controlling charging stations
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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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
Abstract
The invention provides a wireless quick charging system and a wireless quick charging method for an electric automobile, wherein the wireless quick charging system comprises a battery pack, a wireless charging receiving module, at least one wireless charging transmitting module, a battery management controller and a charging management module; the charging management module controls the working state of the wireless charging transmitting module; the wireless charging transmitting module is used for transmitting electric energy in an external power supply to the wireless charging receiving module; the wireless charging receiving module receives the electric energy transmitted by the wireless charging transmitting module and transmits the electric energy to the battery pack, and the battery pack supplies power to the electric automobile; the battery management controller is connected with the battery pack, is used for calculating the SOC of the battery pack and is in wireless communication connection with the charging management module; the battery management controller or the charging management module controls the number of the wireless charging transmitting modules needing to work. Through this technical scheme, adopt wireless communication to feed back the state of battery package to filling electric pile in real time, control output, both improved charge efficiency, prevent the wasting of resources again, realize high-efficient convenient wireless charging mode.
Description
Technical Field
The invention relates to the field of wireless charging of electric automobiles, in particular to a wireless quick charging system and method for an electric automobile.
Background
With the popularization of electric vehicles, the charging demand of electric vehicles is increasing. The existing electric automobile battery charging has a wired charging and wireless charging system. Wired charging requires plugging and unplugging of a charging interface, which is inconvenient and has safety risk. And wireless charging because the restriction of the wireless charging coil power of charging station, charging efficiency is relatively poor, lacks the practicality, and causes the waste of electric energy easily when the battery package electric quantity is higher. The existing wireless charging system and wireless charging method are not enough to meet the market demand. There is a need for an efficient and safe charging system or method to solve the charging problem of the existing electric vehicle.
The invention provides a wireless quick charging system and a wireless quick charging method for an electric vehicle, which reduce the power of a single wireless charging sending module in a charging station, simultaneously charge the electric vehicle by a plurality of wireless charging sending modules, simultaneously communicate with a charging management module in the charging station through a battery management controller with a wireless communication function, control the wireless charging sending module to output electric energy to a wireless charging receiving module of the electric vehicle, feed back the state of a battery pack to a charging pile in real time through wireless communication, and control the wireless charging sending module to output the electric energy, thereby improving the charging efficiency and preventing resource waste.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a wireless quick charging system and method for an electric vehicle, which feed back the state of a battery pack to a charging pile in real time through wireless communication, control output power, improve charging efficiency, prevent resource waste, and implement a high-efficiency and convenient wireless charging mode.
Specifically, the invention provides a wireless quick charging system for an electric vehicle, which is characterized by comprising a battery pack, a wireless charging receiving module, at least one wireless charging transmitting module, a battery management controller and a charging management module; the charging management module is connected with the wireless charging transmitting module and controls the working state of the wireless charging transmitting module; the wireless charging transmitting module is connected with an external power supply and used for transmitting electric energy in the external power supply to the wireless charging receiving module; the wireless charging receiving module and the battery pack are positioned in an electric automobile, the wireless charging receiving module receives electric energy transmitted by the wireless charging transmitting module and transmits the electric energy to the battery pack, and the battery pack is used for supplying power to the electric automobile; the battery management controller is connected with the battery pack, is used for calculating the SOC of the battery pack and is in wireless communication connection with the charging management module; the battery management controller sends the SOC to the charging management module, and the charging management module controls the number of the wireless charging emission modules in a working state according to the SOC; or the battery management controller calculates the current suitable charging power according to the SOC and sends the current suitable charging power to the charging management module, and the charging management module controls the number of the wireless charging emission modules in the working state according to the current suitable charging power.
Preferably, in the system, the number of the wireless charging transmitting modules is multiple, and the multiple wireless charging transmitting modules transmit electric energy to the wireless charging receiving module of the electric vehicle at the same time.
Preferably, in the above system, as the SOC increases, the number of the wireless charging transmission modules in the working state decreases.
Preferably, in the above system, the battery management controller is disposed inside the battery pack.
Preferably, in the system, the charging management module acquires the position coordinates of the electric vehicle in real time, and controls the corresponding wireless charging transmitting module to work according to the position coordinates.
The invention also provides a wireless quick charging method for the electric automobile, which is suitable for the electric automobile with a battery management controller and comprises the following steps: the wireless charging receiving module of the electric automobile receives electric energy transmitted by at least one wireless charging transmitting module of a charging station; the wireless charging receiving module transmits the electric energy to a battery pack of the electric automobile; the battery management controller calculates the SOC of the battery pack and calculates the current appropriate charging power according to the SOC; the battery management controller transmits the current suitable charging power to a charging management module of the charging station so as to control the number of the wireless charging transmitting modules in the working state.
Preferably, in the above method, the step of controlling, by the battery management controller, the number of the wireless charging transmission modules in an operating state includes: and as the SOC is increased, the number of the wireless charging transmitting modules in the working state is reduced.
The invention also provides a wireless quick charging method for the electric automobile, which comprises the following steps that a charging management module of a charging station acquires the SOC of a battery pack of the electric automobile; the charging management module determines or adjusts the number of the wireless charging transmitting modules in the working state according to the SOC; and the corresponding quantity of wireless charging transmitting modules transmit electric energy of an external power supply to the wireless charging receiving module of the electric automobile.
Preferably, the step of determining or adjusting, by the charging management module according to the SOC, the number of wireless charging transmission modules in an operating state includes: as the SOC increases, the number of wireless charging transmit modules decreases.
Preferably, in the above method, the charging management module acquires the position coordinates of the electric vehicle in real time, and controls the corresponding wireless charging transmission module to operate according to the position coordinates.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the power of a single wireless charging and transmitting module is reduced, and the charging efficiency is improved by adopting a mode that a plurality of modules simultaneously charge the electric automobile;
2. through wireless communication, the number of the wireless charging transmitting modules in the working state is controlled in real time according to the SOC, so that the charging efficiency is improved, and electric energy is not wasted.
Drawings
Fig. 1 is a schematic structural diagram of a wireless quick charging system for an electric vehicle according to a preferred embodiment of the invention;
FIG. 2 is a schematic diagram of a wireless fast charging method for an electric vehicle according to a preferred embodiment of the present invention;
fig. 3 is a schematic view of a charging station according to a preferred embodiment of the present invention.
Reference numerals:
1-Battery pack
2-wireless charging receiving module
3-Battery management controller
4-charging management module
5-wireless charging transmitting module
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1, a schematic structural diagram of a wireless fast charging system of an electric vehicle according to a preferred embodiment of the present invention includes a battery pack, a wireless charging receiving module, at least one wireless charging transmitting module, a battery management controller, and a charging management module. Referring to fig. 2, a schematic diagram of the wireless quick charging of the electric vehicle according to a preferred embodiment of the present invention is shown, in which the charging management module 4 and the wireless charging transmitting module 5 are located in the charging station, and may be separate modules or integrated modules, such as being integrated on the charging pile. The wireless charging receiving module 2 and the battery pack 1 are located in the electric automobile. The charging management module 4 of the charging station is connected with the wireless charging transmitting module 5, the charging management module 4 is used for controlling the working state of the wireless charging transmitting module 5, managing the wireless charging transmitting module 5, the wireless charging transmitting module 5 is connected with an external power supply, electric energy is obtained from the external power supply, and the electric energy in the external power supply is transmitted to the wireless charging receiving module 2 in the electric automobile. The wireless charging receiving module 2 receives the electric energy transmitted by the wireless charging transmitting module 5 and transmits the electric energy to the battery pack 1, and the battery pack 1 supplies power to the electric automobile. The system is also provided with a battery management controller 3, wherein the battery management controller 3 is positioned in the electric automobile and connected with the battery pack 1, is used for calculating the SOC of the battery pack 1 and is in wireless communication connection with the charging management module 4.
In one embodiment, the battery management controller 3 in the electric vehicle sends the SOC of the battery pack 1 to the charging management module 4 in the charging station through wireless communication, and the charging management module 4 calculates the number of wireless charging transmission modules 5 to be operated according to the SOC control of the battery pack 1 and controls the corresponding number of wireless charging transmission modules 5 to be operated. Preferably, the battery management controller 4 sends the SOC of the battery pack 1 to the charging management module 4 in the charging station in real time, and the charging management module 4 adjusts and controls the number of the wireless charging transmission modules 5 that need to operate in real time.
Or, in another embodiment, the battery management controller 3 in the electric vehicle calculates the currently suitable charging power according to the SOC, and sends the currently suitable charging power to the charging management module 4 of the charging station, and the charging management module 4 determines the number of the wireless charging emission modules 5 that need to operate according to the received currently suitable charging power, and controls the corresponding number of the wireless charging emission modules 5 to operate. Preferably, the battery management controller 3 calculates the currently suitable charging power according to the SOC in real time, and sends the currently suitable charging power to the charging management module 4 of the charging station in real time, and the charging management module 4 determines the number of the wireless charging emission modules 5 that need to work according to the received currently suitable charging power, and controls the wireless charging emission modules 5 of corresponding number to work in real time.
In an embodiment, the wireless charging transmitting module 5 and the wireless charging receiving module 2 are charging coils, the coil of the wireless charging transmitting module 5 is closed, the coil of the wireless charging receiving module 2 is closed, the wireless charging transmitting module 5 transmits electric energy to the wireless charging receiving module 2, when a plurality of wireless charging transmitting modules 5 are closed, the wireless charging receiving module 2 receives electric energy transmitted by a plurality of coils simultaneously, and has high charging efficiency, along with the increase of the SOC of the battery pack 1, the battery pack 1 gradually increases the electric quantity, the battery is gradually filled, in order to prevent electric energy waste, the number of the wireless charging transmitting modules 5 in the working state needs to be adjusted, and by controlling the working state of the wireless charging transmitting module 5, part of the wireless charging transmitting modules 5 are disconnected, and no electric energy is transmitted.
The present embodiment does not limit the position relationship between the battery management controller 3 and the battery pack 1, the battery management controller 3 may be located in the battery pack 1, or may be an independent component from the battery pack 1, and any position relationship may achieve the technical effect of the present invention, and is within the protection scope of the present invention.
Through the technical scheme, the battery management controller 3 with the wireless communication function is communicated with the charging management module 4 in the charging station, the wireless charging transmitting module 5 of the charging station is controlled to output electric energy to the wireless charging receiving module 2 of the electric automobile, the number of the wireless charging transmitting modules 5 working according to the SOC control is increased, the charging efficiency is improved, the resource waste is prevented, and a high-efficiency and convenient charging mode is provided.
Based on the above embodiments, in a preferred embodiment consistent with the present invention, the charging power of the wireless charging transmitting module 5 is lower than that of the existing wireless charging transmitting module 5, and by dividing one high-power wireless charging transmitting module 5 into a plurality of low-power wireless charging transmitting modules 5, and simultaneously receiving the electric energy transmitted by the plurality of wireless charging transmitting modules 5 and adjusting the number of the wireless charging transmitting modules 5 in real time according to the SOC condition of the battery pack 1, the charging mode is more flexible and efficient.
Based on the above embodiments, in a preferred embodiment consistent with the present invention, the number of the wireless charging transmitting modules 5 is multiple, and the multiple wireless charging transmitting modules 5 transmit electric energy to the wireless charging receiving module 2 of the electric vehicle at the same time, so as to improve the charging efficiency.
Based on the above embodiment, in a preferred embodiment consistent with the present invention, as the SOC of the battery pack 1 increases, the number of the wireless charging transmission modules 5 in the operating state decreases. By adopting the technical scheme, when the electric quantity of the battery pack 1 is low and the SOC is low at first, the quantity of the wireless charging transmitting modules 5 is controlled and increased in an allowable range through wireless communication, when the electric quantity is gradually increased and the SOC of the battery pack 1 is high, the quantity of the wireless charging transmitting modules 5 is reduced, the state of the battery pack 1 is fed back to the charging management module 4 in real time through wireless communication, the output power is controlled, the charging efficiency is improved, and the resource waste is prevented.
Based on the above embodiments, in a preferred embodiment consistent with the present invention, the battery management controller 3 is located inside the battery pack 1.
Based on the above embodiments, in a preferred embodiment consistent with the present invention, the charging management module 4 obtains the position coordinates of the electric vehicle in real time, and controls the corresponding wireless charging transmission module 5 to operate according to the position coordinates. Referring to fig. 3, a charging station schematic diagram according to a preferred embodiment of the present invention is shown, in which a plurality of wireless charging transmitting modules 5 are disposed in a charging station, after an electric vehicle wirelessly communicates with a charging management module 4 of the charging station and is charged, the electric vehicle can travel in the charging station at a speed lower than a set speed per hour, for example, 5km/h, without stopping the vehicle, because energy transmission between the wireless charging transmitting modules 5 and the wireless charging receiving modules 2 has a certain distance limit, and as the electric vehicle travels, the distance from the originally charged wireless charging transmitting module 5 becomes longer, therefore, in this embodiment, the charging management module 4 acquires position coordinates of the electric vehicle in real time, adjusts the corresponding wireless charging transmitting module 5 to close to operate in real time according to the position coordinates of the electric vehicle, i.e., disconnects the wireless charging transmitting module 5 that is farther away from the electric vehicle in real time, and controls wireless charging with a decreasing distance from the electric vehicle to operate The electric transmitting module 5 is closed to work, so that the charging efficiency is ensured, and the charging loss is controlled while the user experience is improved.
The present invention does not limit the set value of the speed per hour, and may be any speed within the range capable of realizing the electric power transmission. If the speed of the electric automobile exceeds the set speed per hour, all the wireless charging transmitting modules 5 are automatically disconnected, and charging is stopped. Preferably, if the electric vehicle is originally in a charging state in a charging station, the charging is disconnected due to the overhigh speed per hour, and when the electric vehicle recovers to a speed lower than the set speed per hour and is still in the charging station, the charging management module 4 in the charging station controls the wireless charging transmitting module 5 which is nearest and can be in a non-working state to work to charge the electric vehicle.
Furthermore, different charging management modules 4 communicate with each other to judge the position of the vehicle, determine the output condition of the wireless charging transmitting module at the corresponding position, and ensure that the vehicle can be charged at any position of the charging station without waste.
The invention supports the simultaneous charging of a plurality of vehicles and a plurality of types of vehicles, and simultaneously adjusts the working quantity and power of the wireless charging transmitting modules 5 at different positions to charge according to the vehicle type battery parameters, the battery SOC condition and the vehicle positions.
After the technical scheme is adopted, as long as the vehicle enters the charging station, no matter where the vehicle is located, the vehicle can randomly run in the charging station, and as long as the vehicle speed is lower than a certain speed, the nearby wireless charging transmitting module 5 can be distributed to track and charge, so that a high-efficiency and convenient wireless charging mode is realized.
In another aspect of the present invention, a wireless fast charging method for an electric vehicle is further provided, which is suitable for an electric vehicle with a battery management controller, and includes the following steps: the wireless charging receiving module of the electric automobile receives electric energy transmitted by at least one wireless charging transmitting module of a charging station; the wireless charging receiving module transmits the electric energy to a battery pack of the electric automobile; the battery management controller calculates the SOC of the battery pack and calculates the current appropriate charging power according to the SOC; the battery management controller transmits the current suitable charging power to the charging management module of the charging station so as to control the number of the wireless charging transmitting modules in the working state. Based on the wireless quick charging method for the electric automobile, the wireless charging receiving module of the electric automobile can simultaneously receive electric energy transmitted by the plurality of wireless charging transmitting modules and transmit the electric energy to the battery pack, so that the charging efficiency is improved, and while charging, the battery management controller calculates the electric quantity condition SOC of the battery pack and calculates the most appropriate charging power acceptable for the current battery pack according to the SOC, wherein the most appropriate charging power is taken as the current appropriate charging power, and if the SOC is lower when charging is just started, the current appropriate charging power is higher, and the SOC is higher as the electric quantity of the battery pack is increased along with the charging, and the current appropriate charging power is lower. After the current suitable charging power is determined, the battery management controller transmits the current suitable charging power to the charging management module of the charging station so as to control the number of the wireless charging transmitting modules which need to work, for example, the wireless charging transmitting modules are increased or decreased, so that the wireless charging transmitting modules with corresponding number work.
Furthermore, the battery management controller calculates the SOC of the battery pack in real time, calculates the current suitable charging power according to the SOC, and transmits the current suitable charging power to the charging management module of the charging station in real time so as to adjust the number of the wireless charging transmitting modules needing to work in real time, so that the optimal charging power can be adjusted in real time according to the electric quantity condition of the battery pack, the charging efficiency is guaranteed, and electric energy is not wasted.
Based on the foregoing embodiment, in a preferred embodiment consistent with the present invention, the step of controlling, by the battery management controller, the number of the wireless charging transmission modules in the operating state includes: and as the SOC is increased, the number of the wireless charging transmitting modules in the working state is reduced.
On the other hand, the invention also provides a wireless quick charging method for the electric automobile, which comprises the following steps that a charging management module of a charging station acquires the SOC of a battery pack of the electric automobile; the charging management module determines or adjusts the number of the wireless charging transmitting modules in the working state according to the SOC; the corresponding number of wireless charging transmitting modules transmit electric energy of an external power supply to the wireless charging receiving module of the electric automobile.
After the charging management module in the charging station acquires the SOC of the battery pack of the electric automobile, the number of the wireless charging transmitting modules which need to be in a working state is determined according to the SOC of the battery pack, and the wireless charging transmitting modules in corresponding number are controlled to transmit electric energy of an external power supply to the wireless charging receiving modules of the electric automobile to charge the battery pack. Along with the change of the SOC, the charging management module adjusts the number of the wireless charging transmitting modules which need to be in a working state according to the obtained SOC. Thus, real-time adjustment is performed according to real-time change of the SOC.
Based on the foregoing embodiment, in accordance with a preferred embodiment of the present invention, the step of determining or adjusting the number of wireless charging transmitting modules in an operating state according to the SOC by the charging management module includes: and as the SOC is increased, the number of the wireless charging transmitting modules in the working state is reduced. At first the battery package electric quantity is low, and when SOC was low, the quantity that increases wireless transmitting module that charges was controlled in the allowed range, rises gradually at the electric quantity, and when battery package SOC was high, reduces wireless transmitting module quantity that charges, through radio communication, the state of battery package is acquireed in real time to the charge management module, controls output, both improves charge efficiency, prevents the wasting of resources again.
Based on the above embodiment, in accordance with a preferred embodiment of the present invention, the charging management module obtains the position coordinates of the electric vehicle in real time, and controls the corresponding wireless charging transmission module to operate according to the position coordinates. In this embodiment, after the electric vehicle wirelessly communicates with and charges the charging management module of the charging station, the electric vehicle can travel in the charging station at a speed lower than the set speed without stopping, because the energy transmission between the wireless charging transmitting module and the wireless charging receiving module has a certain distance limit, and as the electric vehicle travels, the distance between the wireless charging transmitting module and the wireless charging receiving module, which is originally charged by the electric vehicle, becomes longer, therefore, in this embodiment, the charging management module acquires the position coordinates of the electric vehicle in real time, and adjusts the corresponding wireless charging transmitting module to close in real time according to the position coordinates of the electric vehicle to perform work, that is, the wireless charging transmitting module which is farther away from the electric vehicle in real time is disconnected to control the wireless charging transmitting module which is gradually shorter in distance from the electric vehicle to close in work, so as to ensure the charging efficiency, and the charging loss is controlled while the user experience is improved.
By adopting the technical scheme of the invention, the wireless charging sending module of the charging station is controlled to output electric energy to the wireless charging receiving module of the electric automobile by communicating with the charging management module in the charging station through the battery management controller with a wireless communication function, the number of the wireless charging sending modules for outputting current is controlled according to the SOC of the battery pack, when the SOC of the battery pack is low, the number of the wireless charging coils is controlled and increased in an allowable range through wireless communication, when the SOC of the battery pack is high, the number of the wireless charging coils is reduced, the state of the battery pack is fed back to the charging management module in real time through wireless communication, the output power is controlled, the charging efficiency is improved, the resource waste is prevented, furthermore, as long as the vehicle enters the charging station, no matter where the vehicle is, the vehicle can freely run in the charging station, as long as the vehicle speed is lower than a certain speed, the nearby wireless charging sending modules can be distributed to track and, realize high-efficient convenient wireless mode of charging.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. A wireless quick charging system of an electric automobile is characterized by comprising a battery pack, a wireless charging receiving module, at least one wireless charging transmitting module, a battery management controller and a charging management module;
the charging management module is connected with the wireless charging transmitting module and controls the working state of the wireless charging transmitting module;
the wireless charging transmitting module is connected with an external power supply and used for transmitting electric energy in the external power supply to the wireless charging receiving module;
the wireless charging receiving module and the battery pack are positioned in an electric automobile, the wireless charging receiving module receives electric energy transmitted by the wireless charging transmitting module and transmits the electric energy to the battery pack, and the battery pack is used for supplying power to the electric automobile;
the battery management controller is connected with the battery pack, is used for calculating the SOC of the battery pack and is in wireless communication connection with the charging management module;
the battery management controller sends the SOC to the charging management module, and the charging management module controls the number of the wireless charging emission modules in a working state according to the SOC; or the like, or, alternatively,
the battery management controller calculates the current suitable charging power according to the SOC, and sends the current suitable charging power to the charging management module, and the charging management module controls the number of the wireless charging emission modules in the working state according to the current suitable charging power.
2. The wireless quick charging system for the electric automobile according to claim 1, wherein the number of the wireless charging transmitting modules is multiple, and a plurality of the wireless charging transmitting modules transmit electric energy to the wireless charging receiving module of the electric automobile at the same time.
3. The wireless quick charging system for the electric automobile according to claim 2, wherein the number of the wireless charging transmitting modules in the working state is reduced as the SOC is increased.
4. The wireless quick charging system of the electric vehicle as claimed in claim 1, wherein the battery management controller is disposed inside the battery pack.
5. The wireless quick charging system for the electric automobile according to claim 1, wherein the charging management module acquires position coordinates of the electric automobile in real time, and controls the corresponding wireless charging transmitting module to work according to the position coordinates.
6. A wireless quick charging method for an electric automobile is characterized by being suitable for the electric automobile with a battery management controller and comprising the following steps of:
the wireless charging receiving module of the electric automobile receives electric energy transmitted by at least one wireless charging transmitting module of a charging station;
the wireless charging receiving module transmits the electric energy to a battery pack of the electric automobile;
the battery management controller calculates the SOC of the battery pack and calculates the current appropriate charging power according to the SOC;
the battery management controller transmits the current suitable charging power to a charging management module of the charging station so as to control the number of the wireless charging transmitting modules in the working state.
7. The wireless quick charging method for the electric automobile according to claim 6, wherein the step of controlling the number of the wireless charging transmission modules in the working state by the battery management controller comprises the following steps: and as the SOC is increased, the number of the wireless charging transmitting modules in the working state is reduced.
8. A wireless quick charging method for an electric automobile is characterized by comprising the following steps:
a charging management module of the charging station acquires the SOC of a battery pack of the electric automobile;
the charging management module determines or adjusts the number of the wireless charging transmitting modules in the working state according to the SOC;
and the corresponding quantity of wireless charging transmitting modules transmit electric energy of an external power supply to the wireless charging receiving module of the electric automobile.
9. The wireless quick charging method for the electric automobile according to claim 8, wherein the step of determining or adjusting the number of the wireless charging transmitting modules in the working state by the charging management module according to the SOC comprises the following steps: as the SOC increases, the number of wireless charging transmit modules decreases.
10. The wireless quick charging method for the electric automobile according to claim 8, wherein the charging management module acquires position coordinates of the electric automobile in real time and controls the corresponding wireless charging transmitting module to work according to the position coordinates.
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