A charging structure and electric vehicle charging method

Abstract

The application discloses a charging structure and an electric vehicle charging method, and the structure comprises a ground magnetic suction disc, a telescopic piece, a rotary motor, a pull rope, a stop block and a ground end controller, the ground end controller is electrically connected with the rotary motor, the ground magnetic suction disc is provided with a power terminal, and the ground end controller is used for being electrically connected with a vehicle controller of a vehicle; the telescopic piece is compressed between the inner end surface of the ground magnetic suction disc and the stop block, one end of the pull rope is connected with the inner end surface of the ground magnetic suction disc, and the other end of the pull rope is wound around the driving shaft of the rotary motor; the ground end controller is used for controlling the rotary motor to rotate in a first direction when a docking request is received, so that the outer end surface of the ground magnetic suction disc is used for being attracted and connected with the charging receiving end of the vehicle, and the ground end controller is used for controlling the rotary motor to rotate in a second direction when a charging completion signal is received, so that the ground magnetic suction disc is lowered under the action of the pull rope. The application realizes the requirements of accuracy alignment and smooth connection with a simpler structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging, in particular to a charging structure and an electric vehicle charging method. BACKGROUND

[0002] Nowadays, the proportion of new energy vehicles is increasing, and charging is a function that all new energy vehicles often need to use. Currently, customers need to perform operations such as opening a charging port cover, inserting a gun, starting charging, and unplugging the gun when charging. Moreover, the charging gun may be damaged, have stains, and be difficult to plug and unplug, which is not very friendly to customers.

[0003] With the increasing intelligence of electric vehicles, many customers increasingly hope to obtain a more intelligent and automated charging experience. The charging device used in the traditional technology has a relatively complex structure, which leads to an increased failure rate in batch applications. Moreover, the hard connection of the vehicle-side device and the ground-side device increases the possibility of damage during the docking process and reduces the safety of charging. SUMMARY

[0004] The charging structure and the electric vehicle charging method provided by the embodiments of the present application can make the contact of the two ends have good buffering in an instant, avoid physical damage caused by hard connection, realize flexible connection of the ground-side and the vehicle-side, and further meet the requirements of accuracy alignment and stable connection with a simpler structure, thereby improving the reliability of the charging structure and being beneficial to ensuring the safety of charging.

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

[0006] A charging structure includes a ground magnetic suction disc, an extension piece, a rotary motor, a pull rope, a stop block, and a ground-side controller. The ground-side controller is electrically connected with the rotary motor. The ground-side controller is used to be electrically connected with a vehicle controller. A power terminal is arranged on the ground magnetic suction disc. The power terminal is used to be connected with an external power supply end through a high-voltage wire harness. The extension piece is compressed between an inner end surface of the ground magnetic suction disc and the stop block. One end of the pull rope is connected with the inner end surface of the ground magnetic suction disc, and the other end of the pull rope is wound on a driving shaft of the rotary motor. When a docking request is received, the ground-side controller is used to control the rotary motor to rotate in a first direction, so that the pull rope wound on the driving shaft is gradually loosened, and the ground magnetic suction disc is lifted under the driving of the extension piece. An outer end surface of the ground magnetic suction disc is used to be connected with a charging receiving end of the vehicle in a suction manner, so as to charge the vehicle. When a charging completion signal is received, the rotary motor is controlled to rotate in a second direction, so that the pull rope is wound on the driving shaft, and the ground magnetic suction disc is lowered under the action of the pull rope.

[0007] Preferably, further comprising: an air blower, the air blower being electrically connected with the ground end controller, and an air outlet being arranged on the ground magnetic suction disc; a first end of the air pipeline being in communication with an output port of the air blower, and a second end of the air pipeline being in communication with the outside through the air outlet on the ground magnetic suction disc, the air blower being used for sending air to the outside of the ground magnetic suction disc through the air outlet.

[0008] Preferably, further comprising: a distance detector, the distance detector being electrically connected with the ground end controller; the distance detector being used for detecting a distance between the ground magnetic suction disc and the charging receiving end, the ground end controller being used for acquiring the distance, if it is judged that the distance is less than or equal to a first distance, then controlling the air blower to start and controlling the rotary motor to stop, and acquiring a starting time length of the air blower; if it is judged that the starting time length of the air blower is equal to a preset time length, then controlling the air blower to stop and controlling the rotary motor to operate; and the ground end controller being used for, after controlling the rotary motor to rotate in a second direction, if it is judged that the distance is greater than or equal to a second distance, then controlling the rotary motor to stop, wherein the first distance is less than the second distance.

[0009] Preferably, a plurality of air outlets in a convex shape are arranged on the ground magnetic suction disc, and the side surface of part or all of the plurality of air outlets comprises a plurality of sub-air outlets.

[0010] Preferably, the plurality of air outlets comprises a first air outlet and a plurality of second air outlets, the first air outlet being a magnetic suction air outlet, the side surface of the magnetic suction air outlet comprising a plurality of sub-air outlets, the magnetic suction air outlet being located at the center of the ground magnetic suction disc, and the plurality of second air outlets being arranged around the magnetic suction air outlet.

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

[0012] An electric vehicle charging method applied to the ground end controller in the charging structure of any one of the preceding first aspect, the method comprising: if receiving a docking request, controlling the rotary motor to rotate in a first direction, so that the pull rope wound on the drive shaft is gradually loosened, and the ground magnetic suction disc is lifted under the driving of the telescopic member, the outer end surface of the ground magnetic suction disc being used for being attracted and connected with the charging receiving end of the vehicle to charge the vehicle; if receiving a charging completion signal, controlling the rotary motor to rotate in a second direction, so that the pull rope is wound around the drive shaft, and the ground magnetic suction disc is lowered under the action of the pull rope.

[0013] Preferably, after controlling the rotary motor to rotate in the first direction, the method further comprises: acquiring a distance between the ground magnetic suction disc and the charging receiving end; if the distance is less than or equal to a first distance, controlling the air blower to start and the rotary motor to stop, and acquiring a starting time length of the air blower; if the starting time length of the air blower is equal to a preset time length, controlling the air blower to stop and the rotary motor to operate; after controlling the rotary motor to rotate in the second direction, the method further comprises: if it is acquired that the distance is greater than or equal to a second distance, controlling the rotary motor to stop, wherein the first distance is less than the second distance.

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

[0015] A charging method of an electric vehicle, applied to a whole vehicle controller in a charging control device, the whole vehicle controller being configured to be electrically connected with a ground end controller according to any one of the preceding first aspect, the charging control device further comprising: a vehicle-mounted charger and a charging receiving end, the charging receiving end being configured to be connected with the vehicle-mounted charger through a high-voltage wire harness, the whole vehicle controller being electrically connected with the vehicle-mounted charger, and an outer end surface of the charging receiving end being provided with a magnetic member configured to be connected with the ground magnetic suction disc according to any one of the preceding first aspect, the method comprising: if it is detected that a vehicle meets a charging condition, sending a docking request to the ground end controller, so that the ground end controller controls a rotary motor to rotate in a first direction according to the docking request; and if a charging completion instruction sent by the vehicle-mounted charger is received, sending a charging completion signal to the ground end controller, so that the ground end controller controls the rotary motor to rotate in a second direction according to the charging completion signal.

[0016] Preferably, before receiving the charging completion instruction sent by the vehicle-mounted charger, the method further comprises: if a connection completion signal of the charging receiving end and the ground magnetic suction disc fed back by the vehicle-mounted charger is received, sending a start charging instruction to the vehicle-mounted charger to charge the vehicle.

[0017] Preferably, after sending the start charging instruction to the vehicle-mounted charger, the method further comprises: detecting a transmission voltage received by the charging receiving end, detecting a connection port temperature between the charging receiving end and the ground magnetic suction disc, and acquiring an input voltage provided by the ground end controller; comparing a difference between the transmission voltage and the input voltage, and determining whether the connection port temperature is greater than a safety temperature threshold; if the difference is greater than a preset safety difference and / or the connection port temperature is greater than the safety temperature threshold, sending a stop charging instruction to the vehicle-mounted charger.

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

[0019] The charging structure provided by the embodiments of the present application compresses the compression member between the inner end surface of the ground magnetic suction disc and the stop block, one end of the pull rope is connected to the inner end surface of the ground magnetic suction disc, the other end of the pull rope is wound around the driving shaft of the rotary motor, the ground end controller controls the rotary motor to rotate in one direction according to the docking request, the pull rope is gradually loosened, and the ground magnetic suction disc is lifted under the driving of the telescopic member, so that the outer end of the ground magnetic suction disc is attracted and connected to the charging receiving end of the vehicle, if a charging completion signal sent by the vehicle controller is received, the rotary motor is controlled to rotate in the other direction, the pull rope is wound around the driving shaft, so that the ground magnetic suction disc is lowered under the action of the pull rope, and the whole charging process is completed. The structure occupies a small space, and can make the contact between the vehicle end and the ground end have good buffering in an instant, avoid physical damage caused by hard connection, realize flexible connection between the ground end and the vehicle end, and then meet the requirements of accurate alignment and smooth connection with a simpler structure, improve the reliability and use experience of the charging structure, reduce the maintenance cost, so that the structure can realize automatic charging function while considering the characteristics of small size and high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The schematic diagram of the charging structure in the embodiments of the present application is shown in the figure.

[0022] Figure 2 The schematic diagram of the organ cover structure in the embodiments of the present application is shown in the figure.

[0023] Figure 3 The schematic diagram of the L end, N end and PE end structure in the embodiments of the present application is shown in the figure.

[0024] Figure 4 The schematic diagram of the charging receiving end in the embodiments of the present application is shown in the figure.

[0025] Figure 5 The schematic diagram of the air outlet structure in the embodiments of the present application is shown in the figure.

[0026] Figure 6 The schematic diagram of the gas supply branch in the embodiments of the present application is shown in the figure.

[0027] Figure 7 The cross-sectional view of the charging receiving end and the ground magnetic suction disc in the embodiments of the present application is shown in the figure.

[0028] Figure 8 A flow chart of an electric vehicle charging method in an embodiment of the present application;

[0029] Figure 9 A structural schematic diagram of a charging control device in an embodiment of the present application;

[0030] Figure 10 A flow chart of another electric vehicle charging method in an embodiment of the present application.

[0031] Reference signs:

[0032] 10 - ground magnetic suction disc; 20 - telescopic part; 30 - rotating motor; 40 - pull rope; 50 - stop block; 60 - high-voltage wire harness; 70 - air blower; 80 - gas conveying pipeline; 90 - protective cover; 101 - L line terminal; 102 - N line terminal; 103 - PE line terminal; 11 - reserved space; 104 - magnetic suction air outlet; 105 - second air outlet; 1041 - sub air outlet; 1042 - main air outlet; 801 - gas conveying 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 charging structure and the electric vehicle charging method provided by the embodiments of the present application can realize accurate alignment and stable connection by using a flexible structure for alignment between the vehicle end and the ground end, improve the reliability of the charging structure, and facilitate to ensure the safety of charging.

[0034] The technical scheme of the embodiments of the present application is to solve the above technical problems, and the general idea is as follows:

[0035] A charging structure, comprising: a ground magnetic suction disc, a telescopic part, a rotating motor, a pull rope, a stop block, and a ground end controller, the ground end controller being electrically connected with the rotating motor, the ground magnetic suction disc being provided with a power terminal, the power terminal being used for external power supply through a high-voltage wire harness, and the ground end controller being used for electrical connection with a vehicle controller; the telescopic part being compressed between an inner end surface of the ground magnetic suction disc and the stop block, one end of the pull rope being connected with the inner end surface of the ground magnetic suction disc, and the other end of the pull rope being wound around a driving shaft of the rotating motor; the ground end controller being used for, when receiving a docking request, controlling the rotating motor to rotate in a first direction, so that the pull rope wound around the driving shaft is gradually loosened, and the ground magnetic suction disc is lifted under the driving of the telescopic part, an outer end surface of the ground magnetic suction disc being used for suction connection with a charging receiving end of the vehicle, so as to charge the vehicle, and when receiving a charging completion signal, controlling the rotating motor to rotate in a second direction, so that the pull rope is wound around the driving shaft, and the ground magnetic suction disc is lowered under the action of the pull rope.

[0036] For better understanding of the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0037] In a first aspect, the embodiment provides a charging structure, as shown in the drawings, comprising: a ground magnetic suction disc 10, a telescopic part 20, a rotating motor 30, a pull rope 40, a stop block 50, and a ground end controller (not shown in the drawings), the ground end controller being electrically connected with the rotating motor 30, the ground magnetic suction disc 10 being provided with a power terminal, the power terminal being used for external power supply end through a high-voltage wire harness 60, and the ground end controller being used for electrical connection with a vehicle controller. Figure 1

[0038] The telescopic part 20 is compressed between the inner end surface of the ground magnetic suction disc 10 and the stop block 50, one end of the pull rope 40 is connected with the inner end surface of the ground magnetic suction disc 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 end controller can be one of a single-chip microcomputer, a PLC, or other programmable control computers that can input and output signals. The telescopic part 20 can be a device with elastic function, such as a spring, a bellows, etc., the pull rope 40 can be any kind of rope with high strength, such as a steel wire rope, a nylon rope, etc., and the stop block 50 can be a steel plate or other support plate with high strength, which is not limited in the present application.

[0040] The charging structure proposed in the present application can be a charging pile located on the ground or embedded in the underground or semi-underground space. Further, as shown in the drawings, Figure 2 The charging structure can further include a protective cover 90, and the ground magnetic suction disc 10, the telescopic part 20, and the pull rope 40 are all arranged in the protective cover 90, so that a compression channel is formed between the ground magnetic suction disc 10 and the stop block 50, for example, the protective cover 90 can be an organ cover. In addition, a protective cover is also installed above the ground magnetic suction disc 10, which plays a role of dust prevention and protection, and this structure is also applicable in rainy days.

[0041] In specific embodiments, the power terminal is used for connection, current bearing, electric energy conversion, and control. As shown in the drawings, Figure 3 The ground magnetic suction disc 10 is further provided with electric contacts (L line terminal 101 and N line terminal 102) and a PE line terminal 103. The L line terminal 101 and the N line terminal 102 are both semi-encircling around the periphery of the center 104 of the ground magnetic suction disc 10, and the PE line terminal 103 is arranged between the electric contacts and the center 104 of the ground magnetic suction disc 10.

[0042] Specifically, as shown in the drawings, Figure 4 ​As shown, the charging receiving end 400 can be installed below the chassis of the vehicle, and the vehicle receiving end is connected with the vehicle-mounted charger through the high-voltage wire harness 60 of the vehicle. In specific embodiments, the rotating motor 30 can be located in the lower space 11 reserved below the block 50, and the other end of the pull rope 40 is movably wound and connected with the driving shaft of the rotating motor 30 through the block 50.

[0043] The ground end controller is configured to control the rotating motor 30 to rotate in the first direction when receiving the docking request, so that the pull rope 40 wound on the driving shaft is gradually loosened, the ground magnetic suction disc 10 is lifted under the driving of the telescopic member 20, and the outer end surface of the ground magnetic suction disc 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 configured to control the rotating motor 30 to rotate in the second direction when receiving the charging completion signal, so that the pull rope 40 is wound around the driving shaft, and the ground magnetic suction disc 10 is lowered under the action of the pull rope 40.

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

[0045] Further, in order to prevent dust and other impurities from affecting the conductive contact, the ground magnetic suction disc 10 can be provided with a plurality of outflow openings, and the ground end controller is configured to control the rotating motor 30 to rotate in the first direction when receiving the docking request, so that the pull rope 40 wound on the driving shaft is gradually loosened, and the ground magnetic suction disc 10 is lifted under the driving of the telescopic member 20, and the outflow openings of the ground magnetic suction disc 10 are used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle. Figure 1 As shown, the charging structure can further include: an air blower 70 and a gas conveying pipeline 80, the air blower 70 is electrically connected with the ground end controller, and the ground magnetic suction disc 10 is provided with an air outlet; the first end of the gas conveying pipeline 80 is in communication with the output port of the air blower 70, the second end of the gas conveying pipeline 80 is in communication with the outside through the air outlet of the ground magnetic suction disc 10, and the air blower 70 is used to send air to the outside of the ground magnetic suction disc 10 through the air outlet for blowing.

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

[0047] In specific embodiments, the ground magnetic suction disc 10 is provided with a plurality of convex air outlets, and the side surface of part or all of the plurality of air outlets includes a plurality of sub-air outlets.

[0048] As an implementation manner, the plurality of air outlets can include a first air outlet and a plurality of second air outlets 105, as shown in the figure. Figure 5As shown, the first air outlet is a magnetic air outlet 104, the side of the magnetic air outlet 104 comprises a plurality of sub-air outlets 1041, the magnetic air outlet 104 is located at the center of the ground magnetic puck 10, and a plurality of second air outlets 105 are arranged around the magnetic air outlet 104.

[0049] Specifically, the plurality of second air outlets 105 can be arranged around the periphery of the electrical contact. As an example, as shown in Figure 5 As shown, four second air outlets 105 are arranged on the ground magnetic puck 10, and the four second air outlets 105 are arranged at equal intervals around the periphery of the electrical contact. Of course, as other embodiments, two, three, five, six, or the like second air outlets 105 can also be arranged on the ground magnetic puck 10, and the present application is not limited.

[0050] It should be noted that the magnetic air outlet 104 referred to in the present application can be an air outlet with only a magnetic function, which is used to better attract the vehicle end for charging. The magnetic air outlet 104 can 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 switched from closed to open under the action of magnetic force, so as to facilitate subsequent end face cleaning.

[0051] In other embodiments, the side of the magnetic air outlet 104 can include two, three, four, or the like number of sub-air outlets, and the present application is not limited. The size and shape of the sub-air outlet and the air outlet in the present application can be any form, for example, the shape of the air outlet can be one or a combination of circular, triangular, rectangular, or grid shape. In addition, it can also be one or a combination of pentagonal, hexagonal, irregular shape, and the like, and the present application is not limited.

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

[0053] As other optional embodiments, the plurality of air outlets can all be magnetic air outlets 104, one of which is located at the center of the ground magnetic puck 10, and the remaining plurality of magnetic air outlets 104 are arranged around the center.

[0054] The present application adopts a magnetic air outlet 104 arranged at the center of the magnetic puck, sub-air outlets arranged on the side to enhance airflow coverage, and second air outlets 105 arranged around to further expand the cleaning range. By blowing the surface of the magnetic puck through multiple air outlets, the ground magnetic puck 10 and the charging receiving end of the vehicle are fully blown to clean the surface and accumulate dust, prevent dust from affecting the conductive contact, and avoid the charging port from being contaminated by dust, causing high temperature or electric spark due to poor contact.

[0055] In a specific embodiment, such as Figure 6 As shown, the second end of the gas pipeline 80 is connected to the air outlet on the ground magnetic chuck 10 via multiple gas supply branches 801. Each air outlet is connected to a single gas supply branch. Before the gas pipeline 80 reaches each air outlet, it is distributed through the gas supply branches.

[0056] The ground controller can control the blower 70 to turn on and off according to actual needs. For example, it can turn on the blower 70 at preset intervals to blow the outer end face of the ground magnetic chuck 10 and its surroundings.

[0057] Furthermore, to achieve more effective purging of the ground magnetic chuck 10 and the charging receiver, the charging structure may also include a distance detector (not shown in the figure), which is electrically connected to the ground controller. The distance detector is used to detect the distance between the ground magnetic chuck 10 and the charging receiver. The ground controller is used to acquire this distance. If it is determined that the distance is less than or equal to a first distance, it controls the blower 70 to start and the rotary motor 30 to stop, and acquires the start duration of the blower 70. If it is determined that the start duration of the blower 70 is equal to a preset duration, it controls the blower 70 to stop and the rotary motor 30 to run. The ground controller is also used to control the rotary motor 30 to rotate in the second direction. If it is determined that the distance is greater than or equal to the second distance, it controls the rotary motor 30 to stop, wherein the first distance is less than the second distance.

[0058] The distance detector can be a laser rangefinder, infrared range sensor, or other distance detection device. During the lifting process, the distance detector monitors the distance. When the straight-line distance between the ground docking plate and the vehicle-mounted receiver is less than or equal to 50mm, the blower 70 generates airflow to clean the interfaces of both sides through the air duct and air outlet, ensuring conductivity. Then, by real-time monitoring of the distance between the ground magnetic chuck 10 and the charging receiver, the start and stop of the blower 70 and the rotary motor 30 are dynamically adjusted to achieve unattended charging docking and cleaning.

[0059] Optionally, the first distance can be 50mm, the activation duration can be 5-60 seconds, and the second distance can be 150mm. In one application scenario, when the distance detector detects that the distance between the ground magnetic chuck 10 and the charging receiver is ≤50mm, the blower 70 is turned on to blow for 10 seconds, then the blower 70 is turned off and the device continues to rise until it is fully engaged.

[0060] After cleaning, raise it to about 30mm, and the output end (ground magnetic chuck 10) and the receiver end can be automatically attracted by magnetic force.

[0061] In specific embodiments, in order to better ensure successful docking, the areas of the L line terminal 101, the N line terminal 102, and the PE line terminal 103 provided on the ground magnetic suction disc 10 are all sufficiently large, so that, when suction is performed, the docking deviation caused by the possible partial rotation angle and plane displacement offset can be avoided, accurate alignment can be achieved, and a certain size of vehicle parking position deviation can be compensated.

[0062] As shown in Figure 7 FIG. 7 is a cross-sectional view of the ground magnetic suction disc 10 and the charging receiving end, 301 is a power terminal, and each of the vehicle end and the ground end has a magnetic suction device. When the two are close enough, automatic suction is performed by magnetic force, and the terminals are automatically aligned.

[0063] In an example, the magnetic member 302 of the charging receiving end is arranged in a groove, and the size of the groove matches the width of the magnetic suction air outlet 104. In the suction state, the magnetic suction air outlet 104 is embedded in the groove, thereby achieving more stable connection. This magnetic suction structure can avoid the problem of a decrease in the coupling coefficient caused by external force offset.

[0064] Of course, as other embodiments, the center of the magnetic suction disc and the periphery of the magnetic suction disc can be provided with a magnetic suction device. Correspondingly, the center and the periphery of the charging receiving end are provided with a magnetic member matched with the magnetic suction device on the magnetic suction disc, so that the two are more stably suctioned, and the safety of charging is ensured.

[0065] The application realizes unattended charging docking and cleaning through the cooperation of the motor and the blower. The magnetic suction structure combined with the multiple air outlets ensures stable conduction and anti-pollution capability. Compared with the installation mode of the traditional charging pile (the charging pile needs to be additionally installed with a telescopic guide rail and a dust cover), the structure occupies less space, avoids a complicated control process, and realizes more accurate docking with a simplified structure.

[0066] In summary, through the charging structure provided by the embodiments of the application, the contact between the vehicle end and the ground end has good buffering in an instant, physical damage caused by hard connection is avoided, flexible connection between the ground end and the vehicle end is realized, the requirements for accurate alignment and smooth connection are met with a more simplified structure, the reliability and use experience of the charging structure are improved, the maintenance cost is reduced, the structure can realize automatic charging function, and the size is small and the reliability is high.

[0067] In a second aspect, based on the same inventive concept, the embodiments of the application provide an electric vehicle charging method applied to a ground end controller in the charging structure as described in any of the preceding first aspect. Specifically, as shown in Figure 8 the method comprises the following steps.

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

[0069] Step S102, if the charging completion signal is received, the rotating motor is controlled to rotate in a second direction, so that the pull rope is wound on the driving shaft, and the ground magnetic suction plate is lowered under the action of the pull rope.

[0070] In an optional embodiment, after the rotating motor is controlled to rotate in the first direction, the distance between the ground magnetic suction plate and the charging receiving end is obtained; if the distance is less than or equal to a first distance, the air blower is controlled to be turned on and the rotating motor is controlled to be stopped, and the opening time length of the air blower is obtained; if the opening time length of the air blower is equal to a preset time length, the air blower is controlled to be stopped and the rotating motor is controlled to be operated; after the rotating motor is controlled to rotate in the second direction, if it is obtained that the distance is greater than or equal to a second distance, the rotating motor is controlled to be stopped, wherein the first distance is less than the second distance.

[0071] The electric vehicle charging method provided in the present application has the same implementation principle and technical effects as the foregoing charging structure embodiments. For brevity of description, the part not mentioned in the method embodiment can refer to the corresponding content in the foregoing charging structure embodiments.

[0072] In a third aspect, based on the same inventive concept, the present application provides an electric vehicle charging method applied to the vehicle controller 200 in the charging control device. The vehicle controller is electrically connected with the ground controller as described in any one of the foregoing first aspect. As shown in Figure 9 The charging control device further includes a vehicle-mounted charger 300 and a charging receiving end 400. The charging receiving end 400 is connected with the vehicle-mounted charger 300 through a high-voltage wire harness. The vehicle controller 200 is electrically connected with the vehicle-mounted charger 300. The outer end surface of the charging receiving end 400 is provided with a magnetic member, which is used to be connected with the ground magnetic suction plate as described in any one of the foregoing first aspect. As shown in Figure 10 The method includes the following steps:

[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 the charging completion instruction sent by the vehicle-mounted charger 300 is received, a charging completion signal is sent to the ground controller 100, so that the ground controller 100 controls the rotating motor to rotate in a 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, the vehicle controller 200 can further comprise: if the vehicle controller 200 receives the connection completion signal of the charging receiving end 400 and the ground magnetic suction disc fed back by the on-board charger 300 after detecting that the charging receiving end 400 and the ground magnetic suction disc are docked, the vehicle controller 200 sends a start charging instruction to the on-board charger 300 to charge the vehicle.

[0076] In an embodiment, the vehicle controller is used for wireless connection with the ground controller. Specifically, when the vehicle drives above the ground output end, the ground end and the vehicle end are positioned by using UWB (ultra-wideband wireless communication technology) or other positioning methods. The vehicle controller 200 and the ground controller 100 perform wireless communication by using WIFI or other near field communication methods. After the vehicle is parked at the specified position, if the vehicle controller 200 detects that the vehicle is parked in the P gear, it is determined that the vehicle meets the charging condition.

[0077] The vehicle controller 200 sends a docking request to the ground controller 100 and controls the ground controller 100 to be lifted by using near field communication. When the vehicle controller 200 receives the connection completion signal of the charging receiving end 400 and the ground magnetic suction disc fed back by the on-board charger 300, the vehicle controller 200 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 disc through the high-voltage wire harness, feeds back the charging completion signal to the vehicle controller 200 when detecting that the electric energy is full, and the vehicle controller 200 sends the charging completion signal to the ground controller 100.

[0078] In a specific embodiment, receiving the connection completion signal of the charging receiving end 400 and the ground magnetic suction disc fed back by the on-board charger 300 can comprise: receiving the voltage between the PE end and the L end or between the PE end and the N end fed back by the on-board charger 300 meeting the requirements, and then determining that the charging receiving end 400 and the ground magnetic suction disc are connected.

[0079] Further, in order to improve the safety protection effect and reduce the safety hidden danger, before sending the start charging instruction to the on-board charger 300, the vehicle controller 200 can further send an insulation resistance detection command to the on-board charger 300 to make the on-board charger 300 detect whether the insulation resistance of the connection port between the charging receiving end 400 and the ground magnetic suction disc meets the requirements, wherein the connection port comprises: the L port and the ground end, the N port and the ground end, and the L port and the N port.

[0080] If the requirements are met, the power-on request is sent to the ground end controller 100 of the on-board charger 300, and after receiving the power-on signal fed back by the on-board charger 300, the start charging 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, and the charging receiving end 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 receiving the voltage of the L terminal and the N terminal to the vehicle controller 200, and the vehicle controller 200 commands the on-board charger 300 to start charging. In this way, the safety during charging is improved.

[0082] Further, in order to maintain the charging gun line at a suitable temperature and improve charging safety, after sending the start charging instruction to the on-board charger 300, the following steps can also be included: detecting the transmission voltage received by the charging receiving end 400, detecting the connection port temperature between the charging receiving end 400 and the ground magnetic suction disc, and obtaining the input voltage provided by the ground end controller 100; comparing the difference between the transmission voltage and the input voltage, and determining whether the connection port temperature is greater than the safe temperature threshold; if the difference is greater than the preset safe difference, and / or the connection port temperature is greater than the safe temperature threshold, a stop charging instruction is sent 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, the charging is stopped, and the fault is reported.

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

[0085] For example, the voltage deviation can be ±5%, and the safe temperature threshold can be 120℃. The temperature sensor can be set at the vehicle controller 200, which is also used to prohibit the vehicle from driving during charging.

[0086] The application adopts a safety monitoring method, and monitors the port temperature and the input / output voltage difference in real time during charging. If the voltage deviation is greater than ±5% or the temperature exceeds 120℃, the vehicle controller 200 sends a stop instruction and triggers the magnetic suction disc to descend urgently. This structure has multiple safety protections, integrates temperature, voltage monitoring and emergency disconnect mechanism, and significantly reduces safety hazards.

[0087] In an embodiment, in order to accurately obtain the distance between the vehicle end and the ground end, the charging control device can further include a distance sensor, which can be arranged at the charging receiving end, for monitoring the distance between the charging receiving end and the ground magnetic suction disc.

[0088] The control process of the application can include: after the vehicle is parked, the vehicle controller 200 sends a docking request to the ground end controller 100, the controller starts the positive rotation of the rotating motor, the pull rope is released, and the magnetic suction disc is lifted under the action of the telescopic member. When the distance detector detects that the distance between the magnetic suction disc and the charging end is less than or equal to 50 mm, the air blower is turned on for 5 seconds, and then the air blower is turned off and continues to lift to complete suction. The vehicle controller 200 and the ground end controller 100 communicate wirelessly, triggering the charging process; the vehicle-mounted charger 300 receives the electric energy transmitted by the magnetic suction disc through the high-voltage wire harness and feeds back the connection state and temperature data. After the charging is completed, the output end controller drives the motor to rotate, tightens the pull rope, and lowers the ground magnetic suction disc through the tension, and finally returns to the initial position.

[0089] In summary, the electric vehicle charging method provided by the application can effectively prevent the occurrence of dangerous conditions such as overcharging, overdischarging, and overheating by detecting voltage and temperature. The temperature sensor is used to monitor the temperature change in the charging process in real time, ensuring that the charging equipment operates within a safe range. This can keep the charging gun line at a suitable temperature at all times, so that customers will not be burned by the high temperature of the charging gun when using it in summer, and will not be unable to pull out or insert the gun due to low temperature or bad weather in winter, thereby providing customers with a better charging experience.

[0090] Those skilled in the art will appreciate that embodiments of the application can be provided as methods, systems, or computer program products. Accordingly, the application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can 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-ROMs, optical storage media, etc.) having computer-usable program code embodied therein.

[0091] The application is described with reference to flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as combinations of flows and / or blocks in the flowcharts and / or block diagrams, 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 apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus produce a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 one flow or multiple flows and / or blocksFigure 1 a module to perform a function specified in a block or blocks.

[0092] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the Figure 1 a flow or flows and / or blocks Figure 1 a function specified in a block or blocks.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the Figure 1 a flow or flows and / or blocks Figure 1 a function specified in a block or blocks.

[0094] Although preferred embodiments of the application have been described herein, changes and modifications can be suggested to one skilled in the art, and it is intended that the scope of the application be limited only by the appended claims and equivalents thereof.

[0095] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A charging structure, characterized by, The ground magnetic suction disc, the telescopic piece, the rotary motor, the pull rope, the stop block and the ground end controller are electrically connected, the ground end controller is used for being electrically connected with the vehicle controller, the power terminal is arranged on the ground magnetic suction disc, and the power terminal is used for being connected with the external power supply end through the high-voltage wire harness. The telescopic piece is compressed between the inner end surface of the ground magnetic suction disc and the stop block, one end of the pull rope is connected with the inner end surface of the ground magnetic suction disc, and the other end of the pull rope is wound on the driving shaft of the rotary motor. The ground end controller is used for controlling the rotary motor to rotate in the first direction when receiving the docking request, so that the pull rope wound on the driving shaft is gradually loosened, the ground magnetic suction disc is lifted under the driving of the telescopic piece, the outer end surface of the ground magnetic suction disc is used for being attracted and connected with the charging receiving end of the vehicle to charge the vehicle, and the rotary motor is controlled to rotate in the second direction when receiving the charging completion signal, so that the pull rope is wound on the driving shaft, and the ground magnetic suction disc is lowered under the action of the pull rope. The charging structure further includes: an air blower and a gas pipeline, the air blower is electrically connected with the ground end controller, and the ground magnetic suction disc is provided with an air outlet; the first end of the gas pipeline is in communication with the output port of the air blower, the second end of the gas pipeline is in communication with the outside through the air outlet on the ground magnetic suction disc, and the air blower is used for sending air to the outside of the ground magnetic suction disc through the air outlet to blow the surface of the ground magnetic suction disc and the charging receiving end. Further comprising:

2. The structure of claim 1, wherein A distance detector, the distance detector is electrically connected with the ground end controller; The distance detector is used for detecting the distance between the ground magnetic suction disc and the charging receiving end, the ground end controller is used for acquiring the distance, if it is judged that the distance is less than or equal to the first distance, the air blower is controlled to start and the rotary motor is controlled to stop, and the starting time of the air blower is acquired; If it is judged that the starting time of the air blower is equal to the preset time, the air blower is controlled to stop and the rotary motor is controlled to operate; And the ground end controller is used for controlling the rotary motor to stop after controlling the rotary motor to rotate in the second direction, if it is judged that the distance is greater than or equal to the second distance, wherein the first distance is less than the second distance. A plurality of air outlets in relief are arranged on the ground magnetic suction disc, and the side surface of part or all of the plurality of air outlets comprises a plurality of sub-air outlets.

3. The structure of claim 1, wherein The plurality of air outlets include a first air outlet and a plurality of second air outlets, the first air outlet is a magnetic suction air outlet, the side surface of the magnetic suction air outlet comprises a plurality of sub-air outlets, the magnetic suction air outlet is located at the center of the ground magnetic suction disc, and the plurality of second air outlets are arranged around the magnetic suction air outlet.

4. The structure of claim 3, wherein The ground end controller applied to the charging structure in any one of claims 1-4, the method comprises:

5. An electric vehicle charging method, characterized by, ​ If the docking request is received, the rotating motor is controlled to rotate in a first direction, so that the pull rope wound on the drive shaft is gradually loosened, and the ground magnetic suction disc is lifted under the driving of the telescopic member, and the outer end surface of the ground magnetic suction disc is used to be attracted and connected with the charging receiving end of the vehicle to charge the vehicle; If the charging completion signal is received, the rotating motor is controlled to rotate in a second direction, so that the pull rope is wound on the drive shaft, and the ground magnetic suction disc is lowered under the action of the pull rope.

6. The method of claim 5, wherein, After the rotating motor is controlled to rotate in the first direction, the method further comprises: obtaining the distance between the ground magnetic suction disc and the charging receiving end; if the distance is less than or equal to a first distance, the air blower is controlled to be turned on and the rotating motor is controlled to be stopped, and the opening time of the air blower is obtained; if the opening time of the air blower is equal to a preset time, the air blower is controlled to be stopped and the rotating motor is controlled to be operated; After the rotating motor is controlled to rotate in the second direction, the method further comprises: if the distance is greater than or equal to a second distance, the rotating motor is controlled to be stopped, wherein the first distance is less than the second distance.

7. An electric vehicle charging method, characterized by, The vehicle controller applied to the charging control device is electrically connected with the ground end controller in the charging structure of any one of claims 1-4, the charging control device further comprises a vehicle-mounted charger and a charging receiving end, the charging receiving end is connected with the vehicle-mounted charger through a high-voltage wire harness, the vehicle controller is electrically connected with the vehicle-mounted charger, and the outer end surface of the charging receiving end is provided with a magnetic member for connecting with the ground magnetic suction disc in the charging structure of any one of claims 1-4, and the method comprises: 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 the charging completion instruction sent by the vehicle-mounted 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.

8. The method of claim 7, wherein, Before receiving the charging completion instruction sent by the vehicle-mounted charger, the method further comprises: if the connection completion signal of the charging receiving end and the ground magnetic suction disc fed back by the vehicle-mounted charger is received, a start charging instruction is sent to the vehicle-mounted charger to charge the vehicle.

9. The method of claim 8, wherein, After the start charging instruction is sent to the vehicle-mounted charger, the method further comprises: detecting the transmission voltage received by the charging receiving end, detecting the connection port between the charging receiving end and the ground magnetic suction disc, 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 a safety temperature threshold; if the difference is greater than a preset safety difference, and / or the connection port temperature is greater than the safety temperature threshold, a stop charging instruction is sent to the vehicle-mounted charger.

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