Charging structure and electric vehicle charging method

Abstract

The invention discloses a charging structure and an electric vehicle charging method.The structure comprises a ground magnetic suction cup, a telescopic part, a rotating motor, a pull rope, a stop block and a ground end controller, the ground end controller is electrically connected with the rotating motor, a power terminal is arranged on the ground magnetic suction cup, and the ground end controller is used for being electrically connected with a vehicle control unit of a vehicle; the telescopic piece is compressed between the inner end face of the ground magnetic sucker and the check block, one end of the pull rope is connected with the inner end face of the ground magnetic sucker, and the other end of the pull rope is wound around a driving shaft of the rotating motor. The ground end controller is used for controlling the rotating motor to rotate in the first direction when receiving a butt joint request, so that the outer end face of the ground magnetic suction cup is used for being in suction connection with a charging receiving end of the vehicle, and controlling the rotating motor to rotate in the second direction when receiving a charging completion signal. And the ground magnetic sucker descends under the action of the pull rope. The requirements for accurate alignment and stable connection are met through a more simplified structure.

Description

Technical Field

[0001] The present invention relates to the field of charging technology, and in particular to a charging structure and an electric vehicle charging method. Background Art

[0002] Today, new energy vehicles account for an increasingly high proportion, and charging is a function that all new energy vehicles frequently need to use. Currently, customers need to open the charging port cover, insert the gun, start charging, and pull out the gun to charge. In addition, the charging gun may be damaged, stained, or difficult to plug in and out, which are not very customer-friendly.

[0003] As electric vehicles become more and more intelligent, many customers increasingly want a more intelligent and automated charging experience. The charging devices used in traditional technologies are relatively complex in structure, resulting in an increased failure rate in batch applications. In addition, the vehicle-side equipment and the ground-side equipment are rigidly connected, which increases the possibility of damage during the docking process and reduces the safety of charging. Summary of the invention

[0004] The embodiments of the present application provide a charging structure and an electric vehicle charging method, which can provide better buffering at the moment of contact between the two ends, avoid physical damage caused by rigid connection, achieve flexible connection between the ground end and the vehicle end, and thus meet the requirements of precise alignment and stable connection with a simpler structure, thereby improving the reliability of the charging structure and ensuring the safety of charging.

[0005] In a first aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0006] A charging structure, comprising: a ground magnetic chuck, a telescopic member, a rotating motor, a pull rope, a block and a ground end controller, wherein the ground end controller is electrically connected to the rotating motor, and the ground end controller is used to be electrically connected to a vehicle controller of a vehicle, and a power terminal is provided on the ground magnetic chuck, and the power terminal is used to be connected to an external power supply terminal through a high-voltage wire harness; the telescopic member is compressed between the inner end surface of the ground magnetic chuck and the block, one end of the pull rope is connected to the inner end surface of the ground magnetic chuck, and the other end of the pull rope is wound around the driving shaft of the rotating motor; the ground end controller is used to control the rotating motor to rotate in a first direction when receiving a docking request, so that the pull rope wound around the driving shaft is gradually released, and the ground magnetic chuck is lifted under the drive of the telescopic member, and the outer end surface of the ground magnetic chuck is used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle, and when a charging completion signal is received, the rotating motor is controlled to rotate in a second direction, so that the pull rope is wound around the driving shaft, and the ground magnetic chuck is lowered under the action of the pull rope.

[0007] Preferably, it also includes: a blower and an air pipeline, the blower is electrically connected to the ground controller, and an air outlet is provided on the ground magnetic suction cup; the first end of the air pipeline is connected to the output port of the blower, and the second end of the air pipeline is connected to the outside through the air outlet on the ground magnetic suction cup, and the blower is used to supply air to the outside of the ground magnetic suction cup through the air outlet.

[0008] Preferably, it also includes: a distance detector, which is electrically connected to the ground-end controller; the distance detector is used to detect the distance between the ground magnetic suction cup and the charging receiving end, and the ground-end controller is used to obtain the distance. If it is determined that the distance is less than or equal to the first distance, the blower is controlled to be turned on and the rotating motor is controlled to be stopped, and the start-up time of the blower is obtained; if it is determined that the start-up time of the blower is equal to the preset time, the blower is controlled to be stopped and the rotating motor is controlled to run; and the ground-end controller is used to control the rotating motor to stop if it is determined that the distance is greater than or equal to the second distance after controlling the rotating motor to rotate in the second direction, wherein the first distance is less than the second distance.

[0009] Preferably, a plurality of raised air outlets are provided on the ground magnetic suction cup, and the sides of some or all of the plurality of air outlets include a plurality of sub-air outlets.

[0010] Preferably, the multiple air outlets include a first air outlet and multiple second air outlets, the first air outlet is a magnetic air outlet, the side of the magnetic air outlet includes multiple sub-air outlets, the magnetic air outlet is located at the center of the ground magnetic suction cup, and the multiple second air outlets are arranged around the magnetic air outlet.

[0011] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0012] A method for charging an electric vehicle, applied to a ground-end controller in a charging structure as described in any one of the first aspects above, the method comprising: if a docking request is received, controlling the rotating motor to rotate in a first direction, so that the pull rope wrapped around the drive shaft is gradually released, and the ground magnetic suction cup is lifted under the drive of the telescopic member, and the outer end surface of the ground magnetic suction cup is used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle; if a charging completion signal is received, controlling the rotating motor to rotate in a second direction, so that the pull rope is wrapped around the drive shaft, and the ground magnetic suction cup descends under the action of the pull rope.

[0013] Preferably, after controlling the rotating motor to rotate in a first direction, it also includes: obtaining the distance between the ground magnetic suction cup and the charging receiving end; if the distance is less than or equal to the first distance, controlling the blower to start and controlling the rotating motor to stop, and obtaining the start-up time of the blower; if the start-up time of the blower is equal to the preset time, controlling the blower to stop and controlling the rotating motor to run; after controlling the rotating motor to rotate in a second direction, it also includes: if the distance obtained is greater than or equal to the second distance, controlling the rotating motor to stop, wherein the first distance is less than the second distance.

[0014] In a third aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0015] A method for charging an electric vehicle is applied to a vehicle controller in a charging control device, the vehicle controller is used to be electrically connected to a ground-end controller as described in any one of the first aspects above, the charging control device also includes: an on-board charger and a charging receiving end, the charging receiving end is used to be connected to the on-board charger through a high-voltage wire harness, the vehicle controller is electrically connected to the on-board charger, and the outer end surface of the charging receiving end is provided with a magnetic part, which is used to connect to the ground magnetic suction cup as described in any one of the first aspects above, the method includes: if it is detected that the vehicle meets the charging conditions, a docking request is sent to the ground-end controller, so that the ground-end controller controls the rotating motor to rotate in a first direction according to the docking request; if a charging completion instruction sent by the on-board charger is received, a charging completion signal is sent to the ground-end controller, so that the ground-end controller controls the rotating motor to rotate in a second direction according to the charging completion signal.

[0016] Preferably, before receiving the charging completion instruction sent by the on-board charger, it also includes: if a connection completion signal between the charging receiving end and the ground magnetic suction cup is received from the on-board charger, a charging start instruction is sent to the on-board charger to charge the vehicle.

[0017] Preferably, after sending the start charging instruction to the on-board charger, it also includes: detecting the transmission voltage received by the charging receiving end, detecting the temperature of the connection port between the charging receiving end and the ground magnetic suction cup, and obtaining the input voltage provided by the ground end controller; comparing the difference between the transmission voltage and the input voltage, and judging whether the connection port temperature is greater than the safety temperature threshold; if the difference is greater than the preset safety difference, and / or the connection port temperature is greater than the safety temperature threshold, sending a stop charging instruction to the on-board charger.

[0018] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0019] A charging structure provided by an embodiment of the present invention compresses a compression member between the inner end face of a ground magnetic chuck and a stopper, one end of a pull rope is connected to the inner end face of the ground magnetic chuck, and the other end of the pull rope is wound around the drive shaft of a rotating motor. A ground-end controller controls the rotating motor to rotate in one direction according to a docking request, and the pull rope is gradually released. The ground magnetic chuck is lifted under the drive of the telescopic member, so that the outer end of the ground magnetic chuck is attracted and connected with the charging receiving end of the vehicle. If a charging completion signal sent by the vehicle controller is received, the rotating motor is controlled to rotate in another direction, and the pull rope is wound around the drive shaft, so that the ground magnetic chuck descends under the action of the pull rope, and the entire charging process is completed. The structure occupies a small space, and can provide a good buffer at the moment of contact between the vehicle end and the ground end, avoiding physical damage caused by a rigid connection, and can realize a flexible connection between the ground end and the vehicle end, thereby meeting the requirements of precise alignment and smooth connection with a simpler structure, improving the reliability and user experience of the charging structure, and reducing maintenance costs, so that the structure can realize the automatic charging function while taking into account the characteristics of small size and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of a charging structure in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the accordion cover in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the L end, N end, and PE end in an embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of a charging receiving end in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the air outlet in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the gas transmission branch in an embodiment of the present invention;

[0027] Figure 7 It is a cross-sectional view of the charging receiving end and the ground magnetic chuck in an embodiment of the present invention;

[0028] Figure 8 This is a flow chart of a method for charging an electric vehicle according to an embodiment of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of a charging control device in an embodiment of the present invention;

[0030] Fig.10 The present invention is a flowchart of another electric vehicle charging method according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] 10- ground magnetic suction cup; 20- telescopic part; 30- rotating motor; 40- pull rope; 50- block; 60- high-voltage wire harness; 70- blower; 80- gas pipeline; 90- protective cover; 101- L line terminal; 102- N line terminal; 103- PE line terminal; 11- reserved space; 104- magnetic air outlet; 105- second air outlet; 1041- sub-air outlet; 1042- main air outlet; 801- gas branch; 301- power terminal; 302- magnetic part; 100- ground end controller; 200- vehicle controller; 300- on-board charger; 400- charging receiving end. DETAILED DESCRIPTION

[0033] The embodiments of the present application provide a charging structure and an electric vehicle charging method. By adopting a flexible structure for the alignment of the vehicle end and the ground end, accurate alignment and stable connection can be achieved, thereby improving the reliability of the charging structure and ensuring the safety of charging.

[0034] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0035] A charging structure comprises: a ground magnetic suction cup, a telescopic member, a rotating motor, a pull rope, a block and a ground-end controller, wherein the ground-end controller is electrically connected to the rotating motor, a power terminal is arranged on the ground magnetic suction cup, the power terminal is used to be connected to an external power supply terminal through a high-voltage wire harness, and the ground-end controller is used to be electrically connected to a vehicle controller of a vehicle; the telescopic member is compressed between an inner end surface of the ground magnetic suction cup and the block, one end of the pull rope is connected to the inner end surface of the ground magnetic suction cup, and the other end of the pull rope is wound around a driving shaft of the rotating motor; the ground-end controller is used to control the rotating motor to rotate in a first direction upon receiving a docking request, so that the pull rope wound around the driving shaft is gradually released, and the ground magnetic suction cup is lifted under the drive of the telescopic member, the outer end surface of the ground magnetic suction cup is used to be attracted and connected with a charging receiving end of the vehicle to charge the vehicle, and when a charging completion signal is received, the rotating motor is controlled to rotate in a second direction, so that the pull rope is wound around the driving shaft, and the ground magnetic suction cup descends under the action of the pull rope.

[0036] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] In a first aspect, this embodiment provides a charging structure, such as Figure 1 As shown, it includes: a ground magnetic suction cup 10, a telescopic part 20, a rotating motor 30, a pull rope 40, a block 50 and a ground-end controller (not shown in the figure), the ground-end controller is electrically connected to the rotating motor 30, and a power terminal is provided on the ground magnetic suction cup 10. The power terminal is used to connect to the external power supply end through the high-voltage wire harness 60, and the ground-end controller is used to be electrically connected to the vehicle controller of the vehicle.

[0038] The telescopic member 20 is compressed between the inner end surface of the ground magnetic chuck 10 and the stopper 50 , one end of the pull rope 40 is connected to the inner end surface of the ground magnetic chuck 10 , and the other end of the pull rope 40 is wound around the driving shaft of the rotating motor 30 .

[0039] It should be noted that the ground controller can be a single chip microcomputer, a PLC, or other programmable control computers capable of inputting and outputting signals. The telescopic member 20 can be a device with elastic function, such as a spring, a bellows, etc. The pull rope 40 can be any rope with high strength, such as a steel wire rope, a nylon rope, etc. The stopper 50 can be a steel plate or other supporting plate with high strength, which is not limited in this application.

[0040] The charging structure proposed in this application can be a charging pile located on the ground or pre-buried in an underground or semi-underground space. Figure 2 As shown, the charging structure may further include a protective cover 90, in which the ground magnetic suction cup 10, the telescopic member 20 and the pull rope 40 are all arranged, so that a compression channel is formed between the ground magnetic suction cup 10 and the block 50, for example, the protective cover 90 may be an accordion cover. In addition, a protective cover is also installed above the ground magnetic suction cup 10 to prevent dust and protect it, and the structure is also applicable in rainy days.

[0041] In a specific embodiment, the power terminals are used to connect and carry current, convert and control electric energy. Figure 3 As shown, the ground magnetic chuck 10 is also provided with electrical contacts (L line terminal 101 and N line terminal 102) and PE line terminal 103. The L line terminal 101 and the N line terminal 102 are both semi-surrounded by the periphery of the center of the ground magnetic chuck 10, and the PE line terminal 103 is provided between the electrical contacts and the center 104 of the ground magnetic chuck 10.

[0042] Specifically, Figure 4As shown, the charging receiving end 400 can be installed under the chassis of the vehicle, and the vehicle receiving end is connected to the on-board charger through the vehicle's high-voltage wire harness 60. In a specific embodiment, the rotary motor 30 can be located in the reserved space 11 below the block 50, and the other end of the pull rope 40 passes through the block 50 and is movably wound and connected to the drive shaft of the rotary motor 30.

[0043] The ground-end controller is used to control the rotating motor 30 to rotate in the first direction when receiving a docking request, so that the pull rope 40 wrapped around the drive shaft is gradually released, and the telescopic part 20 of the ground magnetic suction cup 10 lifts the ground magnetic suction cup 10 under the drive of the telescopic part 20. The outer end surface of the ground magnetic suction cup 10 is used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle. The ground-end controller is used to control the rotating motor 30 to rotate in the second direction when receiving a charging completion signal, so that the pull rope 40 is wound around the drive shaft, and the ground magnetic suction cup 10 descends under the action of the pull rope 40.

[0044] It should be noted that the first direction referred to in this application may be the forward or reverse direction of the motor, and the second direction is the direction opposite to the first direction. The rotating motor in this application may be a stepper motor or a micro gear motor, etc., and the speed may be between 5RPM and 30RPM, such as 10RPM, 12RPM, 15RPM, etc.

[0045] Furthermore, in order to prevent dust and other impurities from affecting the conductive contact, as Figure 1 As shown, the charging structure may further include: a blower 70 and an air pipeline 80, the blower 70 is electrically connected to the ground-end controller, and an air outlet is provided on the ground magnetic suction cup 10; the first end of the air pipeline 80 is connected to the output port of the blower 70, and the second end of the air pipeline 80 is connected to the outside through the air outlet on the ground magnetic suction cup 10, and the blower 70 is used to supply air to the outside of the ground magnetic suction cup 10 through the air outlet for blowing.

[0046] It should be noted that the blower 70 and the rotating motor 30 can be located in the space below the block 50, the first end of the air supply pipeline 80 is connected to the output port of the blower 70, and the second end of the air supply pipeline 80 passes through the block 50 and is connected to the air outlet on the ground magnetic suction cup 10.

[0047] In a specific embodiment, a plurality of raised air outlets are provided on the ground magnetic suction cup 10, and the side surfaces of some or all of the plurality of air outlets include a plurality of sub-air outlets.

[0048] As an implementation manner, the plurality of air outlets may include a first air outlet and a plurality of second air outlets 105, such as Figure 5As shown, the first air outlet is a magnetic air outlet 104 , the side of the magnetic air outlet 104 includes multiple sub-air outlets 1041 , the magnetic air outlet 104 is located at the center of the ground magnetic suction cup 10 , and multiple second air outlets 105 are arranged around the magnetic air outlet 104 .

[0049] Specifically, the plurality of second air outlets 105 may surround the periphery of the electrical contact. For example, Figure 5 As shown, four second air outlets 105 are arranged on the ground magnetic suction cup 10, and the four second air outlets 105 are arranged at equal intervals on the periphery of the electrical contact. Of course, as other embodiments, two, three, five, six second air outlets 105 can also be arranged on the ground magnetic suction cup 10, and the present application does not limit this.

[0050] It should be noted that the magnetic air outlet 104 referred to in the present application may be an air outlet with only a magnetic suction function, which is used to better engage with the vehicle end for easy charging. The magnetic air outlet 104 may also be an air outlet that uses the characteristics of magnetic materials to control the movement of the valve. When the ground end and the vehicle end are close, the magnetic air outlet is converted from closed to open under the action of magnetic force to facilitate subsequent end face cleaning.

[0051] In other embodiments, the side of the magnetic air outlet 104 may include two, three, four or other sub-air outlets, which are not limited in this application. The size and shape of the sub-air outlets and air outlets in this application can be in any form, for example, the shape of the air outlet is one or more combinations of circular, triangular, rectangular or grid-shaped. In addition, it can also be one or more combinations of other shapes such as pentagons, hexagons, irregular shapes, etc., which are not limited in this application.

[0052] For example, if Figure 5 As shown, the second air outlet 105 (ordinary air outlet) has only one air outlet, and the magnetic air outlet 104 has one main air outlet 1042 and three sub-air outlets 1041, and the gas cleans the end surface through the air outlet.

[0053] As another optional embodiment, the multiple air outlets may all be magnetic air outlets 104 , wherein one magnetic air outlet 104 is located at the center of the ground magnetic suction cup 10 , and the remaining multiple magnetic air outlets 104 are arranged around the center.

[0054] The present application adopts a method of setting a magnetic suction air outlet 104 in the center of the magnetic suction cup, setting a sub-air outlet on the side to enhance the airflow coverage, and the surrounding second air outlet 105 further expands the cleaning range. The surface of the magnetic suction cup is swept by multiple air outlets, and the ground magnetic suction cup 10 and the charging receiving end of the vehicle are comprehensively swept to clean the residual dust accumulated on the surface, prevent dust from affecting the conductive contact, and avoid the charging port from being contaminated by dust, causing serious situations such as high temperature or electric sparks due to poor contact.

[0055] In a specific embodiment, Figure 6 As shown, the second end of the gas pipeline 80 is connected to the air outlet on the ground magnetic suction cup 10 through multiple gas supply branches 801, each air outlet is connected to a single gas supply branch, and the gas pipeline 80 is distributed through the gas supply branches before reaching each air outlet.

[0056] The ground-end controller can control the opening and closing of the blower 70 according to actual needs, for example: using a timed opening method, the blower 70 is turned on at a preset interval to blow the outer end surface and the surrounding area of ​​the ground magnetic suction cup 10.

[0057] Furthermore, in order to achieve more effective blowing of the ground magnetic suction cup 10 and the charging receiving end, the charging structure may also include a distance detector (not shown in the figure), which is electrically connected to the ground-end controller; the distance detector is used to detect the distance between the ground magnetic suction cup 10 and the charging receiving end, and the ground-end controller is used to obtain the distance. If it is determined that the distance is less than or equal to the first distance, the blower 70 is controlled to be turned on and the rotating motor 30 is controlled to be stopped, and the start-up time of the blower 70 is obtained; if it is determined that the start-up time of the blower 70 is equal to the preset time, the blower 70 is controlled to be stopped and the rotating motor 30 is controlled to run; and the ground-end controller is used to control the rotating motor 30 to rotate in the second direction. If it is determined that the distance is greater than or equal to the second distance, the rotating motor 30 is controlled to be stopped, wherein the first distance is less than the second distance.

[0058] Among them, the distance detector can be a laser rangefinder, an infrared rangefinder sensor or other distance detection equipment. During the lifting process, the distance is monitored by the distance detector. When the straight-line distance between the ground docking plate and the vehicle-mounted receiving end is less than or equal to 50 mm, the blower 70 is used to generate air volume, and the interfaces of both parties are cleaned through the air duct and the air outlet to ensure the conductivity. Then, the distance between the ground magnetic suction cup 10 and the charging receiving end is monitored in real time, and the start and stop of the blower 70 and the rotating motor 30 are dynamically adjusted to realize unattended charging docking and cleaning.

[0059] Optionally, the first distance can be 50 mm, the opening time can be 5 to 60 seconds, and the second distance can be 150 mm. In one application scenario, when the distance detector detects that the distance between the ground magnetic suction cup 10 and the charging receiving end is ≤50 mm, the blower 70 is turned on for 10 seconds, and then the blower 70 is turned off and continued to be lifted until it is fully attracted.

[0060] After cleaning, continue to lift it to about 30 mm, and the output end (ground magnetic suction cup 10) and the receiving end can be automatically attracted by magnetic force.

[0061] In a specific embodiment, in order to better ensure successful docking, the L-line terminal 101, the N-line terminal 102 and the PE-line terminal 103 provided on the ground magnetic suction cup 10 are all of sufficient size, so that when attracted, docking deviations caused by possible partial rotation angles and plane displacement offsets can be avoided, accurate alignment can be achieved, and a certain size of vehicle parking position deviation can be compensated.

[0062] like Figure 7 As shown, it is a cross-sectional view of the ground magnetic suction cup 10 and the charging receiving end, 301 is the power terminal, and there is a magnetic suction device at the vehicle end and the ground end respectively. When the two are close enough, they are automatically attracted by magnetic force and the terminals are automatically aligned.

[0063] In one example, the magnetic member 302 of the charging receiving end is disposed in a groove, the size of the groove matches the width of the magnetic air outlet 104, and in the attracted state, the magnetic air outlet 104 is embedded in the groove, thereby achieving a more stable connection. The magnetic structure can avoid the problem of a decrease in the coupling coefficient due to external force offset.

[0064] Of course, as other embodiments, magnetic devices can be provided at the center and the periphery of the magnetic suction cup. Correspondingly, magnetic parts matching the magnetic devices on the magnetic suction cup are provided at the center and the periphery of the charging receiving end, so that the two can be more firmly attracted to each other and the safety of charging can be ensured.

[0065] This application achieves unattended charging docking and cleaning through the coordination of motors and blowers. The magnetic structure is combined with a multi-outlet design to ensure stable conductivity and anti-pollution capabilities. Compared with the traditional installation method of charging piles (charging piles require additional installation of telescopic guide rails and dust covers), this structure occupies less space, avoids cumbersome control processes, and achieves more precise docking with a simplified structure.

[0066] In summary, a charging structure provided by an embodiment of the present invention can provide better buffering at the moment of contact between the vehicle end and the ground end, avoid physical damage caused by rigid connection, and realize flexible connection between the ground end and the vehicle end, thereby satisfying the requirements of precise alignment and smooth connection with a simpler structure, thereby improving the reliability and user experience of the charging structure, and reducing maintenance costs, so that the structure can realize the automatic charging function while taking into account the characteristics of small size and high reliability.

[0067] In a second aspect, based on the same inventive concept, an embodiment of the present invention provides an electric vehicle charging method, which is applied to a ground terminal controller in a charging structure as described in any one of the first aspects above. Specifically, Figure 8 As shown, the method includes:

[0068] Step S101: if a docking request is received, the rotary motor is controlled to rotate in a first direction, so that the pull rope wound on the driving shaft is gradually released, and the ground magnetic suction cup is lifted under the drive of the telescopic member, and the outer end surface of the ground magnetic suction cup is used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle;

[0069] Step S102: If a charging completion signal is received, the rotary motor is controlled to rotate in a second direction, so that the pull rope is wound around the drive shaft, and the ground magnetic suction cup descends under the action of the pull rope.

[0070] In an optional embodiment, after controlling the rotating motor to rotate in a first direction, it also includes: obtaining the distance between the ground magnetic suction cup and the charging receiving end; if the distance is less than or equal to the first distance, controlling the blower to start and controlling the rotating motor to stop, and obtaining the blower start-up time; if the blower start-up time is equal to the preset time, controlling the blower to stop and controlling the rotating motor to run; after controlling the rotating motor to rotate in a second direction, it also includes: if the obtained distance is greater than or equal to the second distance, controlling the rotating motor to stop, wherein the first distance is less than the second distance.

[0071] The present application provides an electric vehicle charging method, the implementation principle and technical effects of which are the same as those of the aforementioned charging structure embodiment. For the sake of brief description, for matters not mentioned in the method embodiment, reference may be made to the corresponding contents in the aforementioned charging structure embodiment.

[0072] In a third aspect, based on the same inventive concept, an embodiment of the present invention provides an electric vehicle charging method, which is applied to a vehicle controller 200 in a charging control device, and the vehicle controller is used to be electrically connected to a ground terminal controller as described in any one of the first aspects above, such as Fig. 9 As shown, the charging control device also includes: an on-board charger 300 and a charging receiving terminal 400, the charging receiving terminal 400 is used to connect to the on-board charger 300 through a high-voltage wire harness, the vehicle controller 200 is electrically connected to the on-board charger 300, and the outer end surface of the charging receiving terminal 400 is provided with a magnetic member for connecting to the ground magnetic chuck as described in any one of the first aspects above, such as Fig.10 As shown, the method includes:

[0073] Step S201: If it is detected that the vehicle meets the charging condition, a docking request is sent to the ground controller 100, so that the ground controller 100 controls the rotating motor to rotate in a first direction according to the docking request;

[0074] Step S202: If a charging completion instruction is received from the onboard charger 300, a charging completion signal is sent to the ground controller 100, so that the ground controller 100 controls the rotating motor to rotate in the second direction according to the charging completion signal.

[0075] In a specific embodiment, before receiving the charging completion instruction sent by the on-board charger 300, it may also include: if the vehicle controller 200 receives the feedback signal that the connection between the charging receiving end 400 and the ground magnetic suction cup is completed after the on-board charger 300 detects that the charging receiving end 400 is connected to the ground magnetic suction cup, then it sends a start charging instruction to the on-board charger 300 to charge the vehicle.

[0076] In one embodiment, the vehicle controller is used to connect to the ground controller by radio. Specifically, when the vehicle travels to the top of the ground output terminal, the ground terminal and the vehicle terminal use UWB (ultra-wideband wireless communication technology) or other positioning methods for positioning, and the vehicle system determines that the vehicle has traveled to the specified position. At this time, the vehicle controller 200 and the ground controller 100 use WIFI or other near-field communication methods for wireless communication. After the vehicle stops at the specified position, if the vehicle controller 200 detects that the vehicle is parked and in P gear, it is determined that the vehicle meets the charging conditions.

[0077] The vehicle controller 200 sends a docking request to the ground controller 100, and commands the ground controller 100 to perform lifting control through near field communication. When the vehicle controller 200 receives the connection completion signal between the charging receiving end 400 and the ground magnetic suction cup fed back by the on-board charger 300, it sends a start charging instruction to the on-board charger 300. The on-board charger 300 receives the electric energy transmitted by the magnetic suction cup through the high-voltage wire harness. When it detects that the electric energy is full, it feeds back the charging completion signal to the vehicle controller 200, and the vehicle controller 200 sends a charging completion signal to the ground controller 100.

[0078] In a specific embodiment, receiving a connection completion signal between the charging receiving terminal 400 and the ground magnetic suction cup fed back by the on-board charger 300 may include: if the voltage between the PE terminal and the L terminal or between the PE terminal and the N terminal fed back by the on-board charger 300 meets the requirements, it is determined that the connection between the charging receiving terminal 400 and the ground magnetic suction cup is completed.

[0079] Furthermore, in order to improve the safety protection function and reduce safety hazards, before sending the charging start instruction to the on-board charger 300, it can also include: the vehicle controller 200 sends an insulation resistance detection command to the on-board charger 300, so that the on-board charger 300 detects whether the insulation resistance of the connection port between the charging receiving end 400 and the ground magnetic chuck meets the requirements, wherein the connection port includes: between the L port and the ground terminal, the N port and the ground terminal, and between the L port and the N port;

[0080] If the requirements are met, a power-on request is sent to the ground controller 100 of the on-board charger 300, and after receiving the power-on signal fed back by the on-board charger 300, a charging start instruction is sent to the on-board charger 300.

[0081] The power-on request includes turning on the power of the L terminal and the N terminal. The charging receiving terminal outputs the voltage of the L terminal and the N terminal to the on-board charger 300. The on-board charger 300 transmits the information of the received voltage of the L terminal and the N terminal to the vehicle controller 200, and the vehicle controller 200 instructs the on-board charger 300 to start charging. This improves the safety of the charging process.

[0082] Furthermore, in order to keep the charging gun line at a suitable temperature and improve charging safety, after sending a start charging instruction to the on-board charger 300, it can also include: detecting the transmission voltage received by the charging receiving end 400, detecting the temperature of the connection port between the charging receiving end 400 and the ground magnetic suction cup, and obtaining the input voltage provided by the ground controller 100; comparing the difference between the transmission voltage and the input voltage, and determining whether the connection port temperature is greater than the safety temperature threshold; if the difference is greater than the preset safety difference, and / or the connection port temperature is greater than the safety temperature threshold, sending a stop charging instruction to the on-board charger 300.

[0083] Specifically, the vehicle controller 200 is used to monitor the received transmission voltage in real time and compare it with the input voltage transmitted by the ground output terminal through near-field communication. If there is a large deviation between the transmission voltage and the input voltage, it is determined that the contact is poor, charging is stopped and a fault is reported.

[0084] The charging control device also includes a temperature sensor, which is electrically connected to the vehicle controller 200 and is used to monitor the temperature of the connection point between the charging receiving terminal 400 and the ground magnetic chuck in real time. The vehicle controller 200 is used to determine whether the monitored temperature exceeds the safety temperature threshold. If it exceeds, it is determined that the contact is poor, charging is stopped and a fault report is made. The vehicle controller 200 receives the fault reporting information and displays it on the vehicle end.

[0085] For example, the voltage deviation may be ±5%, the safety temperature threshold may be 120° C., and the temperature sensor may be set at . The vehicle controller 200 is also used to prohibit the vehicle from running during the charging process.

[0086] This application adopts a safety monitoring method to monitor the port temperature and input / output voltage difference in real time during charging. If the voltage deviation is greater than ±5% or the temperature exceeds 120°C, the vehicle controller 200 sends a stop command and triggers the emergency descent of the magnetic chuck. This structure has multiple safety protections, integrated temperature, voltage monitoring and emergency disconnection mechanisms, significantly reducing safety hazards.

[0087] In one embodiment, in order to accurately obtain the distance between the vehicle end and the ground end, the charging control device may also include a distance sensor, which may be arranged at the charging receiving end to monitor the distance between the charging receiving end and the ground magnetic suction cup.

[0088] The control process of the present application may include: after the vehicle is parked, the vehicle controller 200 sends a docking request to the ground controller 100, the controller starts the rotating motor to rotate forward, the pull rope is released, and the magnetic suction cup is lifted by the telescopic part. When the distance detector detects that the distance between the magnetic suction cup and the charging end is ≤50mm, the blower is turned on for 5 seconds, and then the blower is turned off and continues to be lifted until it is fully attracted. The vehicle controller 200 communicates wirelessly with the ground controller 100 to trigger the charging process; the on-board charger 300 receives the electric energy transmitted by the magnetic suction cup through the high-voltage wiring harness, and feeds back the connection status and temperature data. After charging is completed, the output end controller drives the motor to rotate, tightens the pull wire, lowers the ground magnetic suction cup by pulling force, and finally returns to the initial position.

[0089] To sum up, the electric vehicle charging method provided by the present application can effectively prevent the occurrence of dangerous situations such as overcharging, over-discharging and overheating by detecting voltage and temperature. The temperature sensor is used to monitor the temperature changes during the charging process in real time to ensure that the charging equipment operates within a safe range. The charging gun line can be maintained at a suitable temperature at all times. In summer, when customers use the charging gun, they will not get burned because the temperature of the charging gun is too high. In winter, the gun will not be unable to be unplugged or plugged in due to low or poor temperature, so as to bring customers a better charging experience.

[0090] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0091] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A module that specifies functions in one or more boxes.

[0092] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction module, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0094] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0095] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A charging structure, characterized in that: include: A ground magnetic chuck, a telescopic member, a rotating motor, a pull rope, a block and a ground-end controller, wherein the ground-end controller is electrically connected to the rotating motor, and the ground-end controller is used to be electrically connected to the vehicle controller of the vehicle, and a power terminal is provided on the ground magnetic chuck, and the power terminal is used to be connected to an external power supply terminal through a high-voltage wire harness; The telescopic member is compressed between the inner end surface of the ground magnetic chuck and the stopper, one end of the pull rope is connected to the inner end surface of the ground magnetic chuck, and the other end of the pull rope is wound around the driving shaft of the rotating motor; The ground-end controller is used to control the rotating motor to rotate in a first direction when receiving a docking request, so that the pull rope wrapped around the drive shaft is gradually released, and the ground magnetic suction cup is lifted under the drive of the telescopic member. The outer end surface of the ground magnetic suction cup is used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle. When receiving a charging completion signal, the rotating motor is controlled to rotate in a second direction, so that the pull rope is wrapped around the drive shaft, and the ground magnetic suction cup descends under the action of the pull rope.

2. The structure according to claim 1, characterized in that Also includes: A blower and a gas pipeline, wherein the blower is electrically connected to the ground controller, and an air outlet is provided on the ground magnetic suction cup; The first end of the gas pipeline is connected to the output port of the blower, and the second end of the gas pipeline is connected to the outside through the air outlet on the ground magnetic suction cup, and the blower is used to supply air to the outside of the ground magnetic suction cup through the air outlet.

3. The structure according to claim 2, characterized in that Also includes: A distance detector, the distance detector is electrically connected to the ground end controller; The distance detector is used to detect the distance between the ground magnetic suction cup and the charging receiving end, and the ground end controller is used to obtain the distance. If it is determined that the distance is less than or equal to the first distance, the blower is controlled to be turned on and the rotating motor is controlled to be stopped, and the start-up time of the blower is obtained; If it is determined that the start-up time of the blower is equal to the preset time, the blower is controlled to stop and the rotating motor is controlled to operate; And the ground-end controller is used to control the rotating motor to stop if it is determined that the distance is greater than or equal to the second distance after controlling the rotating motor to rotate in the second direction, wherein the first distance is less than the second distance.

4. The structure according to claim 2, characterized in that The ground magnetic suction cup is provided with a plurality of raised air outlets, and the side surfaces of some or all of the plurality of air outlets include a plurality of sub-air outlets.

5. The structure according to claim 4, characterized in that The multiple air outlets include a first air outlet and multiple second air outlets, the first air outlet is a magnetic air outlet, the side of the magnetic air outlet includes multiple sub-air outlets, the magnetic air outlet is located at the center of the ground magnetic suction cup, and the multiple second air outlets are arranged around the magnetic air outlet.

6. A method for charging an electric vehicle, characterized in that: A ground terminal controller applied to a charging structure as claimed in any one of claims 1 to 5, the method comprising: If a docking request is received, the rotary motor is controlled to rotate in a first direction, so that the pull rope wound on the driving shaft is gradually released, and the ground magnetic suction cup is lifted under the drive of the telescopic member, and the outer end surface of the ground magnetic suction cup is used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle; If a charging completion signal is received, the rotating motor is controlled to rotate in a second direction, so that the pull rope is wound around the driving shaft, and the ground magnetic suction cup descends under the action of the pull rope.

7. The method according to claim 6, characterized in that After controlling the rotary motor to rotate in the first direction, the method further includes: Get the distance between the ground magnetic chuck and the charging receiving end; If the distance is less than or equal to the first distance, the blower is controlled to be turned on and the rotating motor is controlled to be stopped, and the turn-on time of the blower is obtained; If the blower is turned on for a period of time equal to a preset period of time, the blower is controlled to stop and the rotating motor is controlled to operate; After controlling the rotating motor to rotate in the second direction, the method further includes: If the distance is obtained to be greater than or equal to a second distance, the rotating electrical machine is controlled to stop, wherein the first distance is less than the second distance.

8. A method for charging an electric vehicle, characterized in that: A vehicle controller used in a charging control device, the vehicle controller being used to be electrically connected to a ground controller as claimed in any one of claims 1 to 5, the charging control device further comprising: an on-board charger and a charging receiving end, the charging receiving end being used to be connected to the on-board charger through a high-voltage wire harness, the vehicle controller being electrically connected to the on-board charger, the outer end surface of the charging receiving end being provided with a magnetic part for being connected to a ground magnetic chuck as claimed in any one of claims 1 to 5, the method comprising: If it is detected that the vehicle meets the charging condition, a docking request is sent to the ground end controller, so that the ground end controller controls the rotating motor to rotate in a first direction according to the docking request; If a charging completion instruction is received from the on-board charger, a charging completion signal is sent to the ground-end controller, so that the ground-end controller controls the rotating motor to rotate in the second direction according to the charging completion signal.

9. The method according to claim 8, characterized in that Before receiving the charging completion instruction sent by the on-board charger, the method further includes: If a connection completion signal between the charging receiving end and the ground magnetic suction cup is received from the on-board charger, a charging start instruction is sent to the on-board charger to charge the vehicle.

10. The method according to claim 9, characterized in that After sending the charging start instruction to the on-board charger, the method further includes: Detecting the transmission voltage received by the charging receiving end, detecting the connection port between the charging receiving end and the ground magnetic chuck, and obtaining the input voltage provided by the ground end controller; comparing the difference between the transmission voltage and the input voltage, and determining whether the temperature of the connection port is greater than a safety temperature threshold; If the difference is greater than a preset safety difference, and / or the temperature of the connection port is greater than a safety temperature threshold, a stop charging instruction is sent to the on-board charger.

Images