CN112776621A - Movable wireless charging system for new energy automobile and control method of movable wireless charging system - Google Patents
Movable wireless charging system for new energy automobile and control method of movable wireless charging system Download PDFInfo
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- CN112776621A CN112776621A CN202110129034.0A CN202110129034A CN112776621A CN 112776621 A CN112776621 A CN 112776621A CN 202110129034 A CN202110129034 A CN 202110129034A CN 112776621 A CN112776621 A CN 112776621A
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- electric energy
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- air bag
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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
- B60L53/10—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
- B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- 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
- Y02T90/14—Plug-in electric vehicles
Abstract
The application discloses a movable wireless charging system for a new energy automobile and a control method of the movable wireless charging system, wherein the charging system comprises an electric energy transmitting device, a moving device and a position detecting device. The mobile device is including inflatable gasbag in this application for when new energy automobile carries out wireless charging, electric energy transmitting device can be close the electric energy receiving arrangement on the new energy automobile, reduces the electric energy loss, improves charge efficiency, and can also utilize inflatable gasbag buffering electric energy transmitting device and new energy automobile between the collision, reduce the damage to wireless charging device and new energy automobile.
Description
Technical Field
The application relates to a wireless charging technology of a new energy automobile, in particular to a movable charging system for the new energy automobile and a control method of the movable charging system.
Background
With the development of science and technology, new energy automobiles come into operation, and as new energy has the characteristics of environmental protection and high efficiency, new energy automobiles are favored by more and more users, and the number of new energy automobiles used is increased. Among them, new energy vehicles using electric energy as kinetic energy occupy a major market of the current new energy vehicle market.
Wireless charging is a technology of transmitting electric energy in the air between a charging device and a device to be charged by a technology such as electromagnetic induction, thereby charging the device to be charged. Compared with wired charging, wireless charging has the advantages of being not easy to leak electricity, capable of operating fully automatically, unattended and the like, and is widely applied to the charging technology of electric automobiles at present.
Under a general condition, an electric energy receiving unit comprising a secondary coil is installed on an electric automobile, an electric energy transmitting unit comprising a primary coil is installed on a parking space, when the electric automobile needs to be wirelessly charged, the electric automobile is driven to the parking space, so that the relative position between the secondary coil on the electric automobile and the primary coil on the parking space meets a preset requirement, for example, the distance between the secondary coil and the primary coil reaches a preset distance range, when the primary coil is electrified, the secondary coil and the primary coil form a non-contact transformer, and the electric automobile can be wirelessly charged.
The existing wireless charging device is generally fixed on the ground or can only move along the ground in the horizontal direction, and the phenomenon that the distance of the transmitting and receiving device in the vertical direction is too large due to different chassis heights of different automobiles is not considered, so that the charging efficiency is influenced to a certain extent.
Therefore, it is desirable to provide a wireless charging device capable of moving vertically, so as to improve the wireless charging efficiency.
Disclosure of Invention
The embodiment of the specification provides a movable wireless charging system for a new energy automobile and a control method thereof, and aims to solve the problem that the charging efficiency is low during wireless charging of the new energy automobile in the prior art.
The embodiment of the specification is realized by the following steps:
the embodiment of the present specification provides a portable wireless charging system for new energy automobile, and the system includes:
an electric energy transmitting device including a housing and an electric energy transmitting unit; the electric energy transmitting unit is positioned in the cavity in the shell and used for wirelessly charging an electric energy receiving device carried on the new energy automobile;
the mobile device is connected with the electric energy transmitting device; the mobile device comprises an inflatable air bag and a base; one end of the inflatable air bag is connected with the lower surface of the shell, and the other end of the inflatable air bag is connected with the base; the side surface of the inflatable air bag also comprises an air valve, the air valve is connected with one end of an air conveying pipe, and the other end of the air conveying pipe is connected with an air pump;
the position detection device comprises a pressure sensor, and the pressure sensor is positioned on the shell and used for detecting the pressure born by the upper surface of the shell.
Optionally, the inflatable bladder is a wear-resistant rubber material.
Optionally, the mobile device further comprises an airbag protection housing; the air bag protection shell is a hollow foldable columnar structure; the air bag protection shell is sleeved outside the inflatable air bag.
Optionally, a flame-retardant sponge is fixed on the inner side surface of the air bag protection shell.
Optionally, the moving device further comprises at least two telescopic guide rods; the telescopic guide rods are symmetrically distributed on the outer side of the inflatable air bag;
one end of the telescopic guide rod is connected with the lower surface of the shell;
the other end of the telescopic guide rod is connected with the base.
Optionally, the stroke of the telescopic guide rod is 0-40 cm.
Optionally, the pressure sensors include at least a first pressure sensor, a second pressure sensor and a third pressure sensor;
the shape of the upper surface of the shell is a symmetrical polygon, and the first pressure sensor is positioned in the center of the upper surface of the shell;
the second pressure sensor and the third pressure sensor are symmetrically distributed with the first pressure sensor as a center.
Optionally, the position detecting device further includes a distance measuring sensor; the ranging sensor is located on the shell.
Optionally, the distance measuring sensor includes at least one of a laser sensor, a radar sensor, and a vision sensor.
Optionally, the system further comprises a control device;
the control device is connected with the position detection device and used for receiving the pressure signal transmitted by the pressure sensor;
the control device is connected with the moving device and used for controlling the air pump to inflate the inflatable airbag according to the pressure signal.
Optionally, the mobile device further comprises an electric control switch; the electric control switch is positioned on the gas pipe and is connected with the control device, so that the control device can control the working state of the electric control switch.
The embodiment of the specification provides a control method for a movable wireless charging system of a new energy automobile, and the method is applied to the wireless charging system and is characterized by comprising the following steps:
acquiring a starting signal;
controlling the air pump to start according to the starting signal so that the air pump inflates the inflatable air bag in the mobile device; the air pump is connected with the inflatable air bag;
receiving a pressure signal sent by a position detection device;
and controlling the air pump to be switched to a stop state according to the pressure signal so that the air pump stops inflating the inflatable airbag.
Optionally, the method further includes:
controlling an electric control switch to be in an open state according to the starting signal so that the air pump can inflate the inflatable airbag through the electric control switch; the air pump is connected with the inflatable air bag through an air conveying pipe; the electric control switch is positioned on the gas pipe.
Optionally, after the controlling the air pump to start, the method further includes:
receiving a distance signal sent by a distance measuring sensor; the distance measuring sensor is positioned on the position detecting device and used for detecting the distance between the electric energy transmitting device and an electric energy receiving device carried on the new energy automobile;
judging whether the distance between the electric energy transmitting device and the electric energy receiving device reaches a preset distance or not;
and if the distance reaches the preset distance, controlling the air pump to be switched to a stop state.
The embodiment of the specification adopts at least one technical scheme which can achieve the following beneficial effects: in the embodiment of the present specification, the wireless charging system and the control method thereof include a moving device that can move the electric energy transmitting device in a vertical direction, so that when the new energy vehicle is wirelessly charged, the electric energy transmitting device can be close to the electric energy receiving device on the new energy vehicle, a distance between the electric energy transmitting device and the electric energy receiving device is shortened, electric energy loss can be reduced, charging efficiency is improved, and the moving device may further include an inflatable airbag that can buffer a collision between the electric energy transmitting device and the new energy vehicle, thereby also reducing damage to the wireless charging device and the new energy vehicle.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the specification, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise:
fig. 1 is a schematic view of an application scenario when a mobile wireless charging system for a new energy vehicle provided in an embodiment of the present specification is not in use;
fig. 2 is a schematic view of an application scenario of a mobile wireless charging system for a new energy vehicle provided in an embodiment of the present specification during use;
fig. 3 is a schematic structural diagram of a mobile wireless charging system for a new energy vehicle according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural view of an airbag protection housing according to an embodiment of the present disclosure;
fig. 5 is a flowchart of a control method for a mobile wireless charging system of a new energy vehicle according to an embodiment of the present disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments of the present disclosure, shall fall within the scope of protection of the present application.
New energy automobile can include the car that uses on-vehicle power as power, because it is less to the environmental impact than traditional fuel vehicle, is in constantly developing stage at present, and its main theory of operation is: the accumulator-current-power regulator-motor-power transmission system-drives the vehicle to run.
In the prior art, when charging a new energy automobile, the new energy automobile usually needs to be parked to a special charging station, charging is carried out by using a charging pile, when charging, a driver or a worker is required to insert a charging plug on the charging pile into a charging port of the new energy automobile, charging is carried out in a wired mode, and the charging plug on the charging pile is required to be connected with the charging port of the new energy automobile through manual operation in the process.
In practical application, the wireless charging can adopt resonant power transmission and can also adopt electromagnetic induction power transmission. The magnetic coupling resonant wireless power transmission system mainly comprises a primary side rectifying filter circuit, a secondary side rectifying filter circuit, a chopper circuit, a high-frequency inverter circuit and a magnetic coupling structure, and the main charging principle is that when a primary side coil and a secondary side coil generate resonance, namely, the frequencies are consistent, the two coils are charged by using a strong magnetic coupling principle; the principle of the electromagnetic induction type is mainly that two coils are placed at close positions, when one coil is electrified, a magnetic field is generated in the coil, the magnetic flux of the other coil is changed, electromotive force is generated, and wireless power transmission is achieved. Both energy transmission modes can be simply understood as generating magnetism through electricity, and transmitting electric energy through magnetism generating electricity, namely both energy transmission modes need electromagnetic action. In practical applications, the electromagnetic field may be embodied in the form of magnetic induction lines, and the magnetic induction lines are curves around the center of the magnetic field, that is, when the primary and secondary coils are aligned and the vertical distance between the two coils is small, the electromagnetic energy generated in the primary coil can be more fully utilized by the secondary coil, that is, the vertical distance between the primary and secondary coils also affects the transmission efficiency of the electric energy. The technology related to wireless charging is the prior art, and only the principle is roughly described here, and in the embodiment of the present specification, the charging principle between the power transmitting device and the power receiving device is the same as the prior art, and is not described here in detail.
An embodiment of the present specification provides a movable wireless charging system for a new energy vehicle, fig. 1 is an application scenario schematic diagram of the movable wireless charging system for the new energy vehicle provided in the embodiment of the present specification when the system is not in use, and fig. 2 is an application scenario schematic diagram of the movable wireless charging system for the new energy vehicle provided in the embodiment of the present specification when the system is in use. As shown in fig. 1 and 2, the mobile wireless charging system 100 may be installed on a parking space of a vehicle, and the power transmitting device 110 may be located on the ground of the parking space, specifically, the power transmitting device 110 may be embedded in the ground and may be flush with the ground when not being charged, so as to avoid unnecessary collision with the vehicle. When the vehicle drives into a parking space to park and needs to be charged, the electric energy transmitting device 110 can interact with the electric energy receiving device 102 on the new energy automobile 101 to complete wireless charging, manual plugging of a charging interface is not needed, the new energy automobile 101 only needs to be stopped at a specified position, and the operation is simple and convenient.
After the wireless charging is started, the air pump continuously inflates the inflatable airbag in the mobile device 120, so that the electric energy transmitting device 110 is close to the electric energy receiving device 102 on the new energy automobile 101, the position detecting device 130 located on the electric energy transmitting device 110 includes a pressure sensor, when the electric energy transmitting device 110 is attached to the electric energy receiving device 102, that is, the pressure detected by the position detecting device 130 is greater than a preset threshold value, for example, greater than 0, the air pump can stop inflating the inflatable airbag, so that the electric energy transmitting device 110 is supported by inflating the inflatable airbag and kept in a state of being attached to the electric energy receiving device 102, thereby greatly reducing the magnetic leakage phenomenon caused by the overlarge vertical distance between the electric energy transmitting device 110 and the electric energy receiving device 102, further reducing the energy loss and improving the charging efficiency.
Fig. 3 is a schematic structural diagram of a mobile wireless charging system for a new energy vehicle according to an embodiment of the present disclosure. As shown in fig. 3:
the portable wireless charging system that this specification provided in implementation can include:
a power transmission device 110 including a housing 311 and a power transmission unit 312; the electric energy transmitting unit 312 is located in a cavity in the housing 311, and is used for wirelessly charging an electric energy receiving device mounted on a new energy vehicle;
a mobile device 120 connected with the power transmitting device 110; the mobile device 120 comprises an inflatable bladder 321 and a base 322; one end of the inflatable air bag 321 is connected with the lower surface of the shell 311, and the other end of the inflatable air bag 321 is connected with the base 322; the side surface of the inflatable air bag 321 further comprises an air valve 323, the air valve 323 is connected with one end of an air pipe 324, and the other end of the air pipe 324 is connected with an air pump 325;
the position detecting device 130, the position detecting device 330 includes a pressure sensor 331, and the pressure sensor 331 is located on the housing 311 and is configured to detect a pressure applied to an upper surface of the housing 311.
The main working principle of the mobile wireless charging system for the new energy automobile provided in the embodiment of the present specification is that, when the new energy automobile is charged by using the wireless charging system, the air pump inflates the inflatable airbag, along with the inflation process, the electric energy transmitting device connected to the mobile device continuously approaches to the electric energy receiving device on the new energy automobile in the vertical direction, when the electric energy transmitting device is attached to the electric energy receiving device, the pressure sensor located on the housing of the electric energy transmitting device can detect the pressure carried above the electric energy transmitting device, when the pressure is greater than a threshold value, for example, when the pressure is greater than 0, it can be considered that the electric energy transmitting device and the electric energy receiving device are already in the attached state, the distance between the electric energy transmitting device and the electric energy receiving device is already minimum, and the magnetic leakage between the electric energy transmitting device and the electric energy receiving device is already greatly, therefore, in the embodiments of the present disclosure, the distance between the electric energy transmitting device and the electric energy receiving device can be adjusted, so as to reduce energy loss during wireless charging and improve charging efficiency.
And the mobile device comprises an inflatable air bag which can buffer the collision between the electric energy transmitting device and the new energy automobile, thereby reducing the damage to the wireless charging device and the new energy automobile.
Optionally, the inflatable airbag in the embodiments of the present description is made of an abrasion-resistant rubber material, which can meet the inflation requirement and also can enable the wireless charging system to have a longer service life. Moreover, the rubber material is adopted, so that the inflatable airbag can be in a folded or compressed state when the inflatable airbag is not inflated or the inflation amount is small, the volume of the wireless charging system can be reduced, and the wireless charging system is convenient to install and use.
In order to improve the service life of the wireless charging system and reduce the damage of the inflatable airbag from the outside, as shown in fig. 3, the mobile device in the embodiment of the present disclosure may further include an airbag protection housing 325; the air bag protection shell is a hollow foldable columnar structure; the air bag protection shell is sleeved outside the inflatable air bag. Fig. 4 is a schematic structural view of an airbag protection housing in an embodiment of the present disclosure.
In practical application, the diameter of the airbag protection housing may be slightly larger than the diameter of the inflatable airbag in the saturated inflation state, and the maximum length of the airbag protection housing in the stretched state may be slightly larger than the maximum distance between the power transmitting device and the base.
In the embodiment of the present description, the air bag protection casing may be made of a corrugated tube, a threaded tube, or other pipe fittings made of rubber. One end of the air bag protection shell can be connected with the lower surface of the shell of the electric energy transmitting device, the other end of the air bag protection shell is connected with the base, and the air bag protection shell can be in a stretching or shortening state along with the inflation or deflation state of the inflatable air bag.
In order to reduce the interference between the air bag protection shell and the inflatable air bag, the inner side surface of the air bag protection shell can be fixed with flame-retardant sponge.
The moving device in the embodiment of the present specification may further include at least two retractable guide rods 326; the telescopic guide rods are symmetrically distributed on the outer side of the inflatable air bag; one end of the telescopic guide rod is connected with the lower surface of the shell; the other end of the telescopic guide rod is connected with the base. The telescopic guide rod can be used for guiding the electric energy emitting device to move up and down along the vertical direction under the action of the inflatable air bag.
In practical application, the electric energy receiving device is usually installed at the bottom of a new energy automobile, and the stroke of the telescopic guide rod in the embodiment of the specification is 0-40 cm, so that the requirements of most new energy automobiles can be met. It is understood that the stroke of the telescopic guide rod can be set or configured according to actual requirements to meet actual requirements.
It should be noted that the preset condition may be set according to actual requirements. For example, when the resonance type non-contact charging is adopted, assuming that the distance between the primary coil and the secondary coil is very short at the beginning, and generally, the charging efficiency is a process of increasing first and then decreasing with the increase of the charging distance, the distance at which the charging efficiency is the maximum can be set as a preset distance, and it can be understood that when the distance between the coil in the electric energy transmitting device and the coil in the electric energy receiving device satisfies the preset distance, the charging efficiency can be made higher.
In practical application, when resonant non-contact charging is adopted, 3 coupling states can exist between the primary coil and the secondary coil: overcoupling, critical coupling, and undercoupling; when the over-coupling state is changed to the critical coupling state, the coupling factor is greatly reduced, and the charging efficiency is also reduced quickly; the charging efficiency is decreased with the decrease of the coupling factor in the under-coupled state, so the charging efficiency is the highest in the critical coupling state, and the distance of the primary and secondary coils in the critical coupling state can be set as a preset distance, and the electric energy transmitting device is moved to the preset distance by using the moving device.
Also, with regard to a non-contact charging device using electromagnetic induction type power transmission, in general, the smaller the distance between the primary and secondary coils, the higher the efficiency of power transmission, and therefore, the distance between the primary and secondary coils at which the transmission efficiency is the highest can be set to a preset distance without affecting other operations, and when charging is performed, the power transmitting device can be moved to the preset distance by using the moving device.
In order to more accurately judge whether the electric energy transmitting device and the electric energy receiving device are in a joint state, the pressure sensors in the embodiments of the present specification may include at least a first pressure sensor, a second pressure sensor, and a third pressure sensor; when the shape of the upper surface of the housing is a symmetrical polygon, the first pressure sensor may be located at the center of the upper surface of the housing; the second pressure sensor and the third pressure sensor may be symmetrically distributed centering on the first pressure sensor.
In practical application, when the pressure value that a plurality of pressure sensor sensing all were greater than preset pressure value, can be for 0 if preset pressure value, perhaps can closely laminate with electric energy receiving arrangement in order to guarantee electric energy transmitting device, can set up preset pressure value to be greater than 0 positive number, like 1 handkerchief etc. can regard electric energy transmitting device and electric energy receiving arrangement to be in the laminating state, can obtain better charging effect this moment.
The position detection device in the embodiment of the present specification may further include a ranging sensor; the distance measuring sensor is positioned on the shell and used for detecting the distance between the electric energy transmitting device and the electric energy receiving device.
In practical application, the electric energy receiving devices carried in some new energy vehicles may not need to be attached to the electric energy transmitting device on the ground, and a good charging effect can be achieved. For example, when the resonant wireless charging is adopted, assuming that the distance between the primary and secondary coils is very short at the beginning, and generally, the charging efficiency is a process of increasing first and then decreasing as the distance between the primary and secondary coils increases, the distance at which the charging efficiency is the largest can be regarded as the distance at which the charging effect is better, and set as the preset distance, and it can be understood that, when the distance between the coil in the electric energy transmitting device and the coil in the electric energy receiving device satisfies the preset distance, the charging efficiency can be made higher.
In practical application, when resonant wireless charging is adopted, 3 coupling states can exist between the primary coil and the secondary coil: overcoupling, critical coupling, and undercoupling; when the over-coupling state is changed to the critical coupling state, the coupling factor is greatly reduced, and the charging efficiency is also reduced quickly; the charging efficiency is decreased with the decrease of the coupling factor in the under-coupled state, so the charging efficiency is the highest in the critical coupling state, and the distance of the primary and secondary coils in the critical coupling state can be set as a preset distance, and the electric energy transmitting device is moved to the preset distance by using the moving device. At present, the technology of resonant wireless charging is mature, and some contents are only briefly described here, and resonant wireless charging mentioned in the embodiments of this specification may be the same as the prior art, and will not be described here in detail.
In the embodiment of the present disclosure, a distance measuring sensor in a position detecting device may be used to detect a distance between an electric energy transmitting device and an electric energy receiving device, when wireless charging is required, an air pump may be used to supply air to an inflatable air bag in a mobile device, and the distance measuring sensor may be used to detect a distance between the electric energy transmitting device and the electric energy receiving device.
In practical application, whether the new energy automobile is far away from the charging system or not can be determined by utilizing the distance measuring sensor, for example, after the new energy automobile is charged, the new energy automobile drives away from the charging system, the distance measuring sensor can detect that the distance between the electric energy transmitting device and the electric energy receiving device is continuously increased, when the distance is larger than a certain value, for example, 1 meter, the new energy automobile can be determined to drive away from the charging system, then the inflatable air bag can be deflated, and the electric energy transmitting device is enabled to be recovered to the non-working state, for example, the new energy automobile is attached to the ground.
In practical applications, the distance measuring sensor may include any one of a laser sensor, a radar sensor, and a vision sensor. In the embodiment of the present disclosure, the position relationship between the power transmitting device and the power receiving device may be detected by using three distance measuring sensors with known position relationship. For example, a measuring signal transmitting end may be installed in the electric energy receiving device, and may transmit a specific signal to the three ranging sensors, and the three ranging sensors may obtain a position relationship between the electric energy transmitting device and the electric energy receiving device according to a time or intensity of receiving the signal and a known position relationship between the three; for another example, the electric energy receiving device may further be provided with a target point, and the distance measuring sensor detects the position of the target point, so as to obtain the position relationship between the electric energy transmitting device and the electric energy receiving device. It should be noted that, there are various devices for detecting the positional relationship between the power transmitting device and the power receiving device, and the devices may be set according to needs, and are not specifically limited herein as long as the positional relationship between the power transmitting device and the power receiving device can be obtained.
The wireless charging system in the embodiment of the present specification may further include a control device, where the control device may be connected to the position detection device, and is configured to receive the pressure signal transmitted by the pressure sensor; the control device can also be connected with the moving device and used for controlling the air pump to inflate the inflatable air bag according to the pressure signal.
The mobile device in the embodiment of the present specification further includes an electric control switch 326; the electric control switch is positioned on the gas pipe and is connected with the control device, so that the control device can control the working state of the electric control switch.
In practical application, the control device can receive a charging starting signal, indicate that the electric control switch is in an open state according to the starting signal, and indicate the air pump to charge the inflatable air bag, so that the electric energy transmitting device connected with the moving device is continuously close to the electric energy receiving device on the new energy automobile, when the electric energy transmitting device reaches a preset position or the electric energy transmitting device is determined to be attached to the electric energy receiving device by receiving a pressure signal transmitted by the pressure sensor, the air pump can be controlled to stop charging, the electric control switch is in a closed state, the inflatable air bag is enabled to keep a current charged state, the electric energy receiving device can receive more energy transmitted by the electric energy transmitting device, and charging efficiency is higher. After charging, the control device can control the electric control switch to be switched to an open state according to a charging end instruction, so that gas in the inflatable air bag is discharged, the telescopic guide rod is shortened under the action of gravity, and the electric energy emitting device is gradually restored to the original position, for example, the electric energy emitting device is embedded into the ground again.
In practical application, the controller may include any one of a PLC controller, a single chip controller, and a motion controller, and may be set according to actual requirements, which is not specifically limited herein.
The mobile wireless charging system in the embodiment of the present specification may further include a parking guidance device for guiding the new energy vehicle to park to a specified location; the parking guide device comprises a camera and is positioned on an electric energy receiving device of the new energy automobile.
In practical application, the parking guide device can be in communication connection with a display system on the new energy automobile, after the parking guide device is started, a user can see an image acquired by a camera of the parking guide device from a display screen of the display system, and then can park the new energy automobile to a position where wireless charging can be performed according to the guidance of the image, for example, an electric energy transmitting device located on the ground of a parking space is included in the image displayed in the display screen, and the electric energy transmitting device can be shown to be located below an electric energy receiving device at the moment, so that wireless charging can be performed.
The mobile wireless charging system in the embodiments of the present specification may further include a lateral movement device and a longitudinal movement device. The transverse moving device can enable the electric energy emitting device to move left and right in the horizontal direction, the longitudinal moving device can enable the electric energy emitting device to move front and back in the horizontal direction, and then the electric energy emitting device can move towards multiple directions, so that the controller can actively move the electric energy emitting device to a position corresponding to the electric energy receiving device on the new energy automobile, a driver does not need to park accurately, and the operation of the driver can be simplified.
Considering that different types of charging devices may be required for different models of new energy vehicles in practical applications, when the power transmitting device of the charging device is not matched with the power receiving device on the new energy vehicle, normal charging may not be performed, and the power transmitting device and/or the power receiving device may be damaged. In order to ensure the safety of the charging device and the vehicle, in the embodiment of the present specification, the device further includes a vehicle number acquisition device, configured to acquire number information of the vehicle, so as to charge the vehicle in the preset number list. For example, the charging device in the embodiment of the present description may further include a camera, which is used to collect a number or a license plate number of the new energy automobile. The controller or the server corresponding to the charging device can judge whether the vehicle is a vehicle allowed to be charged or not according to the collected information, if so, the power supply can be started to allow charging, and if not, the power supply cannot be started, namely, the charging is not allowed.
Based on the same idea, the embodiment of the present specification further provides a control method corresponding to the above apparatus. Fig. 5 is a flowchart of a control method for a mobile wireless charging system of a new energy vehicle according to an embodiment of the present disclosure. From the viewpoint of a program, the execution subject of the flow may be a program installed in an application server, an application client, or a control system having a control capability such as a controller. As shown in fig. 5, the method may include: step 510: an initiation signal is acquired.
In practical applications, the starting signal may be a signal generated by a user operation or a signal automatically triggered by the wireless charging device. For example, a user sends a starting signal through terminal operation, for example, charging is started through an application program in the terminal, or the user triggers a switch on the charging pile to start charging, and the like; for another example, the wireless charging system can detect the position of the new energy automobile, and when the electric energy receiving device on the new energy automobile is located above the electric energy transmitting device of the wireless charging system, the wireless charging system can send out a starting signal. The generation of the start signal in the embodiments of the present specification may also be performed in the same manner as in the related art, and is not particularly limited herein.
Step 520: controlling the air pump to start according to the starting signal so that the air pump inflates the inflatable air bag in the mobile device; the air pump is connected with the inflatable air bag.
Step 530: receiving a pressure signal sent by a position detection device;
step 540: and controlling the air pump to be switched to a stop state according to the pressure signal so that the air pump stops inflating the inflatable airbag.
Optionally, the method in the embodiment of the present specification may further include:
controlling an electric control switch to be in an open state according to the starting signal so that the air pump can inflate the inflatable airbag through the electric control switch; the air pump is connected with the inflatable air bag through an air conveying pipe; the electric control switch is positioned on the gas pipe.
Optionally, after controlling the air pump to start, the method in this embodiment may further include:
receiving a distance signal sent by a distance measuring sensor; the distance measuring sensor is positioned on the position detecting device and used for detecting the distance between the electric energy transmitting device and an electric energy receiving device carried on the new energy automobile;
judging whether the distance between the electric energy transmitting device and the electric energy receiving device reaches a preset distance or not;
and if the distance reaches the preset distance, controlling the air pump to be switched to a stop state.
The activation signal in the embodiments of the present disclosure may also be used to activate a power source connected to the power transmitting device to energize the power transmitting device to transmit power to the power receiving device.
In order to reduce the energy loss, the start signal in the embodiment of the present disclosure may also be only used for the movement of the mobile device, and when the mobile device drives the power transmitting device to a specified position, such as when the power transmitting device is attached to the power receiving device, a power start signal may be sent to a server or a controller controlling the power supply, so as to start the power supply with the power transmitting device. In practical applications, the setting can be performed according to actual needs, and is not limited specifically here.
The method in the embodiment of the present disclosure may further control the electronic control switch to the off state after the electric energy transmitting device reaches the designated position, so that the inflatable airbag maintains the inflated state, and thus the electric energy transmitting device can transmit the energy to the electric energy receiving device when reaching the designated position.
After the charging is finished, the electric control switch can be controlled to be switched to the opening state, the gas in the inflatable air bag is discharged, and the electric energy transmitting device is restored to the initial state, for example, the electric energy transmitting device is returned to the ground.
While certain embodiments of the present disclosure have been described above, other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily have to be in the particular order shown or in sequential order to achieve desirable results. The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present specification, and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A portable wireless charging system for new energy automobile, its characterized in that, the system includes:
an electric energy transmitting device including a housing and an electric energy transmitting unit; the electric energy transmitting unit is positioned in the cavity in the shell and used for wirelessly charging an electric energy receiving device carried on the new energy automobile;
the mobile device is connected with the electric energy transmitting device; the mobile device comprises an inflatable air bag and a base; one end of the inflatable air bag is connected with the lower surface of the shell, and the other end of the inflatable air bag is connected with the base; the side surface of the inflatable air bag also comprises an air valve, the air valve is connected with one end of an air conveying pipe, and the other end of the air conveying pipe is connected with an air pump;
the position detection device comprises a pressure sensor, and the pressure sensor is positioned on the shell and used for detecting the pressure born by the upper surface of the shell.
2. The system of claim 1, wherein the inflatable bladder is a wear resistant rubber material.
3. The system of claim 1, wherein the mobile device further comprises an airbag protection housing; the air bag protection shell is a hollow foldable columnar structure; the air bag protection shell is sleeved outside the inflatable air bag.
4. The system of claim 1, wherein the moving means further comprises at least two telescoping guiding rods; the telescopic guide rods are symmetrically distributed on the outer side of the inflatable air bag;
one end of the telescopic guide rod is connected with the lower surface of the shell;
the other end of the telescopic guide rod is connected with the base.
5. The system of claim 1, wherein the position detection device further comprises a ranging sensor; the ranging sensor is located on the shell.
6. The system of claim 1, further comprising a control device;
the control device is connected with the position detection device and used for receiving the pressure signal transmitted by the pressure sensor;
the control device is connected with the moving device and used for controlling the air pump to inflate the inflatable airbag according to the pressure signal.
7. The system of claim 9, the mobile device further comprising an electrically controlled switch;
the electric control switch is positioned on the gas pipe and is connected with the control device, so that the control device can control the working state of the electric control switch.
8. A control method of a mobile wireless charging system for a new energy automobile, the method being applied to the mobile wireless charging system for a new energy automobile according to any one of claims 1 to 7, the method comprising:
acquiring a starting signal;
controlling the air pump to start according to the starting signal so that the air pump inflates the inflatable air bag in the mobile device; the air pump is connected with the inflatable air bag;
receiving a pressure signal sent by a position detection device;
and controlling the air pump to be switched to a stop state according to the pressure signal so that the air pump stops inflating the inflatable airbag.
9. The method of claim 8, further comprising:
controlling an electric control switch to be in an open state according to the starting signal so that the air pump can inflate the inflatable airbag through the electric control switch; the air pump is connected with the inflatable air bag through an air conveying pipe; the electric control switch is positioned on the gas pipe.
10. The method of claim 8, wherein after controlling the air pump to start, further comprising:
receiving a distance signal sent by a distance measuring sensor; the distance measuring sensor is positioned on the position detecting device and used for detecting the distance between the electric energy transmitting device and an electric energy receiving device carried on the new energy automobile;
judging whether the distance between the electric energy transmitting device and the electric energy receiving device reaches a preset distance or not;
and if the distance reaches the preset distance, controlling the air pump to be switched to a stop state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110129034.0A CN112776621A (en) | 2021-01-29 | 2021-01-29 | Movable wireless charging system for new energy automobile and control method of movable wireless charging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110129034.0A CN112776621A (en) | 2021-01-29 | 2021-01-29 | Movable wireless charging system for new energy automobile and control method of movable wireless charging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158070A (en) * | 2022-07-26 | 2022-10-11 | 奕充机器人(苏州)有限公司 | Automatic charging device for automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158070A (en) * | 2022-07-26 | 2022-10-11 | 奕充机器人(苏州)有限公司 | Automatic charging device for automobile |
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