Charging control method and charging system

Abstract

The application is suitable for the field of charging technology, and provides a charging control method and a charging system.The charging control method comprises the following steps: after an opening signal is acquired, an electromagnet on a charging gun is controlled to work at a first current to generate a magnetic field, so that a magnetic attraction force is generated between the electromagnet and a charging seat on an electric vehicle, and real-time pressure collected by a pressure sensor on the charging gun is acquired; when the real-time pressure is greater than a preset pressure, a charging parameter of the electric vehicle is determined according to the real-time pressure, the electromagnet is controlled to work at a second current to generate a magnetic field, so that the charging gun is kept plugged in the charging seat; and the electric vehicle is charged according to the charging parameter.In the process of plugging the charging gun into the charging seat, the electromagnet on the charging gun is controlled to generate a magnetic field, and a magnetic attraction force is generated with a charging plate on the charging seat, so that the user can plug the charging gun into the charging seat by using a smaller force, and the experience of the user when charging the electric vehicle by using the charging pile is improved.

Description

Technical Field

[0001] The present application belongs to the field of charging technology, and in particular relates to a charging control method and a charging system. Background Art

[0002] With the development of electric vehicles, charging issues are gaining increasing attention, and users are placing increasing emphasis on convenient charging. Currently, the charging guns used in charging piles on the market connect to the electric vehicle through a snap-on structure. Due to the heavy weight of the charging gun and charging cable, users need to exert considerable force to connect the charging gun to the electric vehicle, resulting in a poor user experience. Summary of the Invention

[0003] The embodiments of the present application provide a charging control method and a charging system, which can solve the problem of difficulty in connecting a charging gun to an electric vehicle.

[0004] In a first aspect, an embodiment of the present application provides a charging control method, including:

[0005] After receiving the start signal, the electromagnet on the charging gun is controlled to operate at a first current to generate a magnetic field, so that a magnetic attraction is generated between the electromagnet and the charging base on the electric vehicle, and the real-time pressure collected by the pressure sensor on the charging gun is obtained;

[0006] When the real-time pressure is greater than the preset pressure, the charging parameters of the electric vehicle are determined according to the real-time pressure, and the electromagnet is controlled to operate at a second current to generate a magnetic field so that the charging gun remains plugged into the charging base; wherein the second current is greater than the first current;

[0007] The electric vehicle is charged according to the charging parameters.

[0008] In a possible implementation of the first aspect, after charging the electric vehicle according to the charging parameters, the method further includes:

[0009] When the electric vehicle is fully charged, charging of the electric vehicle is stopped, and the electromagnet is controlled to operate with the first current to generate a magnetic field.

[0010] In a possible implementation of the first aspect, after charging of the electric vehicle is completed, charging of the electric vehicle is stopped, and the electromagnet is controlled to operate at the first current to generate a magnetic field, the method further includes:

[0011] When the stop signal is obtained, the power supply to the electromagnet is stopped.

[0012] In a possible implementation of the first aspect, determining a charging parameter of the electric vehicle according to the real-time pressure includes:

[0013] Determine the pressure range within which the real-time pressure falls;

[0014] Determine charging parameters corresponding to the pressure range; wherein the charging parameters include charging voltage.

[0015] In a second aspect, an embodiment of the present application provides a charging system, comprising a charging pile and a charging base on an electric vehicle, the charging pile comprising a charging control unit and a charging gun, the charging gun comprising a magnetic conductive plate, an insulating plate, a pressure sensor, an electromagnet, a high-voltage wiring harness, and a low-voltage wiring harness, the magnetic conductive plate, the insulating plate, the pressure sensor, and the electromagnet being sequentially arranged in close contact, the multiple magnetic conductive sheets on the magnetic conductive plate being electrically connected to the charging control unit via the high-voltage wiring harness, and the electromagnet and the pressure sensor being electrically connected to the charging control unit via the low-voltage wiring harness;

[0016] The charging stand includes a base and a charging plate. The base is used to be installed on the electric vehicle. The base is provided with a through hole. The charging plate is arranged in the through hole. The charging plate includes a plurality of electrode sheets. The plurality of electrode sheets are used to electrically connect to the plurality of charging lines on the electric vehicle.

[0017] When the charging gun is inserted into the charging base, the charging control unit controls the electromagnet to operate at a first current to generate a magnetic field, so that the electromagnet and the charging plate are magnetically attracted to each other, and obtains the real-time pressure collected by the pressure sensor;

[0018] When the charging gun is inserted into the charging base, the charging control unit determines the charging parameters of the electric vehicle based on the real-time pressure, and controls the electromagnet to operate at a second current to generate a magnetic field so that the charging gun remains plugged into the charging base; wherein the second current is greater than the first current;

[0019] The charging control unit charges the electric vehicle according to the charging parameters.

[0020] In a possible implementation of the second aspect, the insulating plate, the pressure sensor and the electromagnet are all provided with through holes, the high-voltage wiring harness is passed through the through holes of the insulating plate, the through holes of the pressure sensor and the through holes of the electromagnet, and is electrically connected to the magnetic conductive plate.

[0021] In a possible implementation of the second aspect, the charging gun further includes an insulating sleeve, which is passed through the through hole of the insulating plate, the through hole of the pressure sensor, and the through hole of the electromagnet; the high-voltage wiring harness is passed through the insulating sleeve and is electrically connected to the magnetic conductive plate.

[0022] In a possible implementation manner of the second aspect, the charging gun further includes a first insulating partition plate, and a plurality of insulating plates are arranged on the first insulating partition plate, each of the insulating plates being located between two adjacent magnetic conductive sheets on the magnetic conductive plate, so that all the magnetic conductive sheets on the magnetic conductive plate are isolated from each other.

[0023] In a possible implementation manner of the second aspect, the charging gun further includes an insulating shell, and the magnetic conductive plate, the insulating plate and the electromagnet are arranged in an inner cavity of the insulating shell.

[0024] In a possible implementation manner of the second aspect, the charging gun further includes a switch unit, and the switch unit is arranged on an outer shell of the insulating shell and is electrically connected with a corresponding low-voltage wire in the low-voltage wire harness.

[0025] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0026] When the opening signal is acquired, the charging control unit on the charging pile controls the electromagnet on the charging gun to work at a first current to generate a magnetic field, so that a magnetic attraction force is generated between the electromagnet and the charging seat on the electric vehicle, and the friction force between the charging gun and the charging seat is offset, and the user can insert the charging seat into the charging seat by using a smaller force, thereby improving the user experience. At the same time, the electromagnet on the charging gun can also generate a magnetic attraction force with the magnetic conductive plate, and the pressure sensor located between the magnetic conductive plate and the electromagnet can detect the real-time pressure of the electromagnet on the pressure sensor.

[0027] When the real-time pressure is greater than the preset pressure, it indicates that the charging gun has been inserted into the charging seat. Since the charging parameters of different types of electric vehicles are different, the areas of the charging plates on the charging seats are also different. When the charging gun is inserted into the charging seat, the magnetic attraction force between the electromagnet and the charging plate is also different, thereby causing the pressure of the electromagnet on the pressure sensor to be different. Therefore, the charging control unit can determine the type of the electric vehicle according to the real-time pressure output by the pressure sensor, and further determine the charging parameter of the electric vehicle. At the same time, the charging control unit controls the electromagnet to work at a second current to generate a magnetic field, so that the charging gun is kept inserted into the charging seat, preventing the charging gun from being separated from the charging seat, and ensuring the normal charging of the electric vehicle.

[0028] Finally, the charging control unit charges the electric vehicle according to the determined charging parameter.

[0029] Therefore, the charging control method provided by the embodiments of the present application can reduce the insertion difficulty of the charging gun and improve the user experience when charging.

[0030] It can be understood that the beneficial effects of the second aspect described above can be referred to the related description in the first aspect described above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 This is a principle block diagram of a charging pile provided in one embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the structure of a charging gun provided in one embodiment of the present application;

[0034] Figure 3 This is an exploded diagram of a charging gun provided in one embodiment of the present application;

[0035] Figure 4 This is a schematic structural diagram of a charging station provided in one embodiment of the present application;

[0036] Figure 5 This is an exploded schematic diagram of a charging station provided in one embodiment of the present application;

[0037] Figure 6 It is a flowchart of a charging control method provided in one embodiment of the present application.

[0038] In the figure: 100, charging control unit; 101, electromagnet; 102, pressure sensor; 103, magnetic conductive plate; 104, insulating plate; 105, high-voltage wiring harness; 106, low-voltage wiring harness; 107, insulating sleeve; 108, first insulating partition; 109, insulating shell; 110, switch unit; 111, first sealing sleeve; 200, base; 201, seat body; 202, first protrusion; 203, second protrusion; 204, accommodating groove; 205, charging plate; 206, electrode sheet; 207, through hole; 208, second insulating partition; 209, second sealing sleeve. DETAILED DESCRIPTION

[0039] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0040] It should be understood that the word “comprise” or variations such as “comprises” or “comprising”, when used in this specification and in the accompanying claims, indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0041] It should also be understood that the term “and / or” when used in this specification and in the following claims is intended to mean one or the other or both of the associated listed items and includes all possible combinations of one or more of the associated listed items.

[0042] As used in this specification and in the claims, the terms “if’ and “when” can be interpreted to mean “upon” or “in response to a determination” or “in response to a detection” depending on the context. Similarly, the phrase “if it is determined” or “if [a described condition or event] is detected” can be interpreted to mean “upon a determination” or “in response to a determination” or “upon detecting [a described condition or event]” or “in response to detecting [a described condition or event]”, depending on the context.

[0043] In addition, the terms “first”, “second”, “third”, etc. as used in the description of the application and the appended claims are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0044] Reference in the specification to “one embodiment” or “some embodiments” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase “in one embodiment” or “in some embodiments” in various places in the specification are not necessarily all referring to the same embodiment, although it can. The terms “comprise”, “comprises”, “comprising”, “include”, “includes”, “including” and “contain”, “contains”, “containing” and variants thereof are meant to be construed as “including but not limited to”, unless otherwise noted.

[0045] The embodiments of the present application provide a charging system, including a charging pile and a charging seat on an electric vehicle.

[0046] As Figures 1 to 3As shown, the charging pile includes a charging control unit 100 and a charging gun. The charging gun includes a magnetic plate 103, an insulating plate 104, a pressure sensor 102, an electromagnet 101, a high-voltage wiring harness 105 and a low-voltage wiring harness 106. The magnetic plate 103, the insulating plate 104, the pressure sensor 102 and the electromagnet 101 are arranged in sequence. The multiple magnetic conductive sheets on the magnetic plate 103 are electrically connected to the charging control unit 100 through the high-voltage wiring harness 105, and the electromagnet 101 and the pressure sensor 102 are electrically connected to the charging control unit 100 through the low-voltage wiring harness 106.

[0047] Specifically, when the user inserts the charging gun into the charging base, the charging control unit 100 controls the low-voltage wiring harness 106 to energize the electromagnet 101 and the pressure sensor 102. The electromagnet 101 operates with a first current to generate a magnetic field. A magnetic attraction is generated between the electromagnet 101 and the charging plate 205 in the charging base. Under the action of the magnetic attraction, the user can use less force to achieve the connection between the charging gun and the charging base, thereby improving the user's experience when charging the electric vehicle.

[0048] The pressure sensor 102 can detect the real-time pressure exerted by the electromagnet 101 on the pressure sensor 102 and transmit this real-time pressure to the charging control unit 100. Before the charging gun is inserted into the charging dock, the electromagnet 101 only attracts the magnetic plate 103. At this time, the pressure exerted by the electromagnet 101 on the magnetic plate 103 against the insulating plate 104 is the first pressure. The pressure exerted by the insulating plate 104 on the pressure sensor 102 is also the first pressure. At this time, the real-time pressure output by the pressure sensor 102 to the charging control unit 100 is the first pressure.

[0049] When the charging gun is inserted into the charging dock, the electromagnet 101 simultaneously attracts the magnetic conductive plate 103 and the charging plate 205 on the charging dock. The pressure exerted on the insulating plate 104 by the magnetic conductive plate 103 due to the attraction of the electromagnet 101 increases from the first pressure to the second pressure. Simultaneously, the pressure exerted on the pressure sensor 102 by the insulating plate 104 changes to the second pressure. At this point, the real-time pressure output by the pressure sensor 102 to the charging control unit 100 is the second pressure, which is greater than the preset pressure. Therefore, when the real-time pressure received by the charging control unit 100 is greater than the preset pressure, the charging control unit 100 can determine that the charging gun is now inserted into the charging dock.

[0050] Because different types of electric vehicles have different charging parameters, the area of ​​the charging plate 205 on the charging dock also varies. The charging parameter for an electric vehicle is the charging voltage. The higher the charging voltage, the larger the area of ​​the electrode pad 206 on the charging plate 205, and thus the larger the area of ​​the charging plate 205. The lower the charging voltage, the smaller the area of ​​the electrode pad 206 on the charging plate 205, and thus the smaller the area of ​​the charging plate 205. When the charging gun is inserted into the charging dock, the magnetic attraction between the electromagnet 101 and the charging plate 205 varies, resulting in different pressures exerted by the electromagnet 101 on the pressure sensor 102. Therefore, the charging control unit 100 can determine the type of electric vehicle and, therefore, the charging parameters of the electric vehicle based on the real-time pressure output by the pressure sensor 102. Simultaneously, the charging control unit 100 controls the electromagnet 101 to generate a magnetic field at a second current greater than the first current. This strengthens the magnetic field of the electromagnet 101, keeping the charging gun plugged into the charging dock and preventing it from falling out, ensuring proper charging of the electric vehicle.

[0051] After determining the charging parameters, the charging control unit 100 charges the electric vehicle according to the charging parameters. The charging system provided by the embodiment of the present application can enable a single charging pile to simultaneously meet the charging needs of multiple types of electric vehicles, thereby improving the versatility of the charging pile and meeting the convenience of charging electric vehicles.

[0052] like Figure 2 and Figure 3 As shown, the insulating plate 104 , the pressure sensor 102 and the electromagnet 101 are all provided with through holes, and the high-voltage wiring harness 105 is passed through the through holes of the insulating plate 104 , the through holes of the pressure sensor 102 and the through holes of the electromagnet 101 , and is electrically connected to the magnetic conductive plate 103 .

[0053] Specifically, when the charging gun is inserted into the charging base, the magnetic conductive plate 103 is connected to the charging plate 205 in the charging base, and the charging control unit 100 outputs a current of corresponding voltage to charge the electric vehicle through the magnetic conductive plate 103.

[0054] Exemplarily, the high-voltage wiring harness 105 includes a first insulating layer and a plurality of high-voltage wires, with the first insulating layer enclosing all of the high-voltage wires. The low-voltage wiring harness 106 includes a second insulating layer and a plurality of low-voltage wires, with the second insulating layer enclosing the high-voltage wiring harness 105 and all of the low-voltage wires. The end of the high-voltage wiring harness 105 is not enclosed by the second insulating layer. The end of the high-voltage wiring harness 105 is passed through the through-hole of the insulating plate 104, the through-hole of the pressure sensor 102, and the through-hole of the electromagnet 101, and is electrically connected to the magnetic conductive plate 103. Because the outside of the high-voltage wire is enclosed by the first insulating layer, the normal operation of the pressure sensor 102 and the electromagnet 101 will not be affected when a high-voltage current flows through the high-voltage wiring harness 105.

[0055] Exemplarily, the shape of the pressure sensor 102 can be sheet-like or mesh-like, ensuring that the pressure sensor 102 has sufficient area to contact the insulating plate 104 and the electromagnet 101. After the electromagnet 101 is powered on, the pressure sensor 102 can accurately collect the real-time pressure of the insulating plate 104 on the pressure sensor 102.

[0056] To further improve the isolation between the high-voltage wiring harness 105 and the low-voltage components (pressure sensor 102 and electromagnet 101), an insulating sleeve 107 can be added. First, insulating sleeve 107 is inserted through the through-holes of the insulating plate 104, the through-holes of the pressure sensor 102, and the through-holes of the electromagnet 101. The high-voltage wiring harness 105 is then inserted through insulating sleeve 107 and electrically connected to the magnetic conductive plate 103. Insulating sleeve 107 further isolates the pressure sensor 102 and electromagnet 101 from the high-voltage wiring harness 105, thereby improving the stability of the charging gun.

[0057] like Figure 3 As shown, the charging gun also includes a first insulating partition 108, on which a plurality of isolation plates are provided. Each isolation plate is located between two corresponding adjacent magnetic conductive sheets on the magnetic conductive plate 103, so that all magnetic conductive sheets on the magnetic conductive plate 103 are isolated from each other.

[0058] Specifically, when the high-voltage current output by the charging control unit 100 passes through the high-voltage wiring harness 105 and reaches the magnetic plate 103, each magnetic plate on the plate 103 has different electrodes. If the plates are not isolated from each other, discharge or even short circuit will occur between the plates, causing damage to the electric vehicle or charging station. The isolation plate on the first insulating partition 108 isolates all the magnetic plates on the plate 103 from each other, preventing discharge or short circuit between the plates, ensuring that the charging gun can charge the electric vehicle normally, and improving the safety and stability of the charging gun.

[0059] like Figure 2 and Figure 3 As shown, the charging gun further includes an insulating shell 109 . The insulating shell 109 is provided with an inner cavity. The magnetic conductive plate 103 , the insulating plate 104 and the electromagnet 101 are all arranged in the inner cavity of the insulating shell 109 .

[0060] Specifically, when a charging gun is needed to charge an electric vehicle, the user can insert the charging gun into the charging dock by holding the insulating housing 109. The insulating housing 109 can isolate the internal circuit, preventing the charging gun from leaking electricity and causing harm to the user, and at the same time, the insulating housing 109 can protect the internal components.

[0061] In one embodiment of the present application, the charging port of the insulating housing 109 is provided with a limiting structure.

[0062] Specifically, when the user inserts the charging gun into the charging base, the limiting structure can limit the displacement path of the charging gun to ensure that the charging gun can be correctly plugged into the charging base.

[0063] Exemplarily, the retaining structure is a retaining protrusion, i.e., a retaining protrusion is provided at the charging port of the insulating housing 109, and a groove is provided on the charging base that matches the retaining protrusion. When the charging gun is inserted into the charging base, the retaining protrusion slides in the groove, preventing the charging gun from rotating and ensuring that the charging gun is accurately inserted into the charging base.

[0064] like Figure 2 and Figure 3 As shown, the charging gun further includes a switch unit 110 , which is disposed on the outer shell of the insulating housing 109 . The switch unit 110 is electrically connected to the corresponding low-voltage line in the low-voltage wiring harness 106 .

[0065] Specifically, when the user lifts the charging gun, the switch unit 110 is triggered. The switch unit 110 sends an on signal to the charging control unit 100 through the low-voltage wiring harness 106. After receiving the on signal, the charging control unit 100 outputs a low-voltage current. The low-voltage current reaches the electromagnet 101 through the low-voltage wiring harness 106. The electromagnet 101 generates a magnetic field and generates a magnetic attraction between the charging plate 205 in the charging base. The user can use less force to insert the charging gun into the charging base.

[0066] When the electric car is fully charged and the user wants to unplug the charging gun, the user triggers the switch unit 110, and the switch unit 110 sends a shutdown signal to the charging control unit 100 through the low-voltage wiring harness 106. After receiving the shutdown signal, the charging control unit 100 stops outputting low-voltage current to the electromagnet 101, and the electromagnet 101 no longer generates a magnetic field. The user can smoothly unplug the charging gun from the charging base.

[0067] For example, the switch unit 110 may be a push button switch, a touch switch, or a wave switch, etc. The user may send an on signal or an off signal to the charging control unit 100 by triggering the push button switch, the touch switch, or the wave switch.

[0068] like Figure 2 and Figure 3 As shown, the charging gun further includes a first sealing sleeve 111 , which is disposed in the inner cavity of the insulating shell 109 and close to the charging port of the insulating shell 109 .

[0069] Specifically, when the charging gun is inserted into the charging base, the first sealing sleeve 111 can help form a seal between the charging gun and the charging base, preventing water or other foreign matter from entering between the charging gun and the charging base, causing charging abnormalities, and improving the safety and stability of the charging gun.

[0070] like Figure 4 and Figure 5 As shown, the charging stand includes a base 200 and a charging plate 205. The base 200 is used to be installed on an electric vehicle. A through hole 207 is provided on the base 200. The charging plate 205 is arranged in the through hole 207. The charging plate 205 includes a plurality of electrode sheets 206. The plurality of electrode sheets 206 are used to electrically connect with the corresponding plurality of charging lines on the electric vehicle.

[0071] Specifically, when the charging gun is inserted into the charging base, the electromagnet 101 on the charging gun generates a magnetic field, and the electromagnet 101 and the electrode sheet 206 on the charging base generate magnetic attraction. The magnetic attraction can offset the friction between the charging gun and the charging base. Under the action of the magnetic attraction, the user can insert the charging gun into the charging base with less force, thereby improving the user experience.

[0072] After the charging gun is inserted into the charging base, the multiple electrode plates 206 on the charging base contact the multiple magnetic conductive plates on the magnetic conductive plate 103 in the charging gun. When the charging control unit 100 outputs a high-voltage current, the high-voltage current passes through the electrode plates 206 in the charging base to charge the electric vehicle. During the charging process, the electromagnet 101 in the charging gun maintains a sufficiently large magnetic field, and there is sufficient magnetic attraction between the electromagnet 101 in the charging gun and the electrode plates 206 in the charging base to keep the charging gun plugged into the charging base and ensure stable charging of the electric vehicle. Because the magnetic attraction can keep the charging gun stably plugged into the charging base, there is no need to provide an additional clamping structure on the charging base and charging gun, reducing the cost of the charging base and charging gun.

[0073] In one embodiment of the present application, the area of ​​the electrode sheet 206 in the charging plate 205 is determined according to the charging voltage of the electric vehicle. If the charging voltage of the electric vehicle is the third voltage, the area of ​​the electrode sheet 206 is the first area; if the charging voltage of the electric vehicle is the fourth voltage, the area of ​​the electrode sheet 206 in the charging plate 205 is the second area; if the third voltage is greater than the fourth voltage, the first area is greater than the second area.

[0074] Specifically, designers can select electrode sheets 206 of corresponding sizes based on the charging voltage of the electric vehicle. When the charging voltage of the electric vehicle is higher, the area of ​​the electrode sheet 206 used is larger, and when the charging voltage of the electric vehicle is lower, the area of ​​the electrode sheet 206 used is smaller.

[0075] like Figure 4 and Figure 5As shown, the base 200 includes a base body 201 and a first protrusion 202 and a second protrusion 203. The first protrusion 202 and the second protrusion 203 are both arranged on the same side of the base body 201. The through hole 207 passes through the base body 201 and the first protrusion 202. The second protrusion 203 is spaced apart and sleeved on the periphery of the first protrusion 202 so that an annular accommodating groove 204 is formed between the first protrusion 202 and the second protrusion 203.

[0076] Specifically, the base body 201 is fixed to the body of the electric vehicle. Multiple charging cables on the electric vehicle are inserted into the through-holes 207 and electrically connected to the multiple electrode plates 206. When the charging gun is inserted into the charging base, the multiple magnetic conductive plates in the charging gun contact and connect with the multiple electrode plates 206 in the charging base, achieving electrical connection. The outer shell of the charging gun is located in the receiving groove 204, sealing the connection between the charging gun and the charging base, preventing water or other foreign matter from entering and affecting the normal charging of the electric vehicle, and improving the charging stability of the electric vehicle.

[0077] Exemplarily, the charging plate 205 is disposed near the opening of the first protrusion 202 so that after the charging gun is inserted into the charging base, the multiple magnetic conductive sheets on the charging gun contact the multiple electrode sheets 206 on the charging base to achieve electrical connection.

[0078] In one embodiment of the present application, the charging base further includes a second sealing sleeve 209 , which is sleeved on the first protrusion 202 and disposed in the accommodating groove 204 ; alternatively, the second sealing sleeve 209 is sleeved on the second protrusion 203 .

[0079] Specifically, when the charging gun is inserted into the charging base, the shell at the end of the charging gun will squeeze the second sealing sleeve 209, forming a seal at the connection between the charging gun and the charging base, preventing water or other foreign matter from entering and affecting the normal charging of the electric vehicle, thereby improving the stability of the charging of the electric vehicle.

[0080] In one embodiment of the present application, a limiting structure is provided in the accommodating groove 204 , and the limiting structure is used to limit the moving direction of the charging gun.

[0081] Specifically, the charging gun is provided with a limiting portion adapted to the limiting structure. When the charging gun is inserted into the charging base, the limiting portion on the charging gun moves in the limiting structure, so that when the charging gun is inserted into the charging base, the multiple magnetic conductive sheets in the charging gun and the multiple electrode sheets 206 in the charging base can correctly contact and realize electrical connection.

[0082] Exemplarily, the limiting structure is a groove arranged in the accommodating groove 204, which can be arranged on the first protruding part 202 or the second protruding part 203, and a protruding part is arranged on the shell of the end of the charging gun. When the charging gun is inserted into the charging seat, the protruding part on the charging gun always slides in the groove, preventing the charging gun from rotating to cause the multiple magnetic conductive sheets on the charging gun and the multiple electrode sheets 206 on the charging seat to fail to be in corresponding contact, and ensuring that the multiple magnetic conductive sheets in the charging gun and the multiple electrode sheets 206 in the charging seat can be in correct contact to realize electrical connection.

[0083] As shown in Figure 4 and Figure 5 The charging seat further comprises a second insulating partition plate 208, and the second insulating partition plate 208 is provided with multiple isolation plates, each of which is arranged between two adjacent electrode sheets 206 on the charging plate 205, so that all the electrode sheets 206 on the charging plate 205 are isolated from each other.

[0084] Specifically, after the charging gun is inserted into the charging seat, if the high-voltage current output by the charging control unit 100 reaches the multiple electrode sheets 206 on the charging seat, discharge or even short circuit between the electrode sheets 206 will occur if the electrode sheets 206 are not isolated, which can cause damage to the charging gun, the charging pile or the electric vehicle, and even threaten the personal safety of the user. The isolation plates on the second insulating partition plate 208 are arranged between two adjacent electrode sheets 206 respectively, so that all the electrode sheets 206 on the charging plate 205 are isolated from each other, preventing discharge or short circuit between the electrode sheets 206, and ensuring that the electric vehicle can normally charge, thereby improving the safety during charging.

[0085] In an embodiment of the present application, the charging plate 205 comprises a first electrode sheet, a second electrode sheet and a third electrode sheet, the first electrode sheet is used to be electrically connected with the positive charging line on the electric vehicle, the second electrode sheet is used to be electrically connected with the negative charging line on the electric vehicle, and the third electrode sheet is used to be electrically connected with the grounding charging line on the electric vehicle.

[0086] Specifically, the charging gun comprises three magnetic conductive sheets, which are electrically connected with the positive charging line, the negative charging line and the grounding charging line of the charging pile respectively. When the charging gun is inserted into the charging seat, the three magnetic conductive sheets of the charging gun are in corresponding contact with the first electrode sheet, the second electrode sheet and the third electrode sheet on the charging seat respectively, realizing electrical connection between the charging gun and the electric vehicle. When the charging control unit 100 outputs high-voltage current, the high-voltage current charges the electric vehicle through the first electrode sheet, the second electrode sheet and the third electrode sheet.

[0087] It should be noted that the positive and negative electrodes described in this application do not only represent the positive electrode of DC, but can also represent the live and neutral wires of AC. When the electric vehicle is charged with AC, the magnetic conductive sheet connected to the live wire in the charging gun is in electrical contact with the first electrode sheet, the magnetic conductive sheet connected to the neutral wire in the charging gun is in electrical contact with the second electrode sheet, and the magnetic conductive sheet connected to the ground wire in the charging gun is in electrical contact with the third electrode sheet. At this time, the charging pile can charge the electric vehicle with AC.

[0088] In one embodiment of the present application, the base 200 is made of insulating material, which can prevent leakage during charging of the electric vehicle, prevent potential safety hazards to the user's personal safety, and improve the safety of the electric vehicle during charging.

[0089] like Figure 6 As shown, the charging control method includes steps S601 to S603.

[0090] Step S601, after receiving the start signal, the electromagnet 101 on the charging gun is controlled to operate at a first current to generate a magnetic field, so that a magnetic attraction is generated between the electromagnet 101 and the charging base on the electric vehicle, and the real-time pressure collected by the pressure sensor 102 on the charging gun is obtained.

[0091] Specifically, when the user inserts the charging gun into the charging base, the charging control unit 100 controls the low-voltage wiring harness 106 to energize the electromagnet 101 and the pressure sensor 102. The electromagnet 101 operates with a first current to generate a magnetic field. A magnetic attraction is generated between the electromagnet 101 and the charging plate 205 in the charging base. Under the action of the magnetic attraction, the user can use less force to achieve the connection between the charging gun and the charging base, thereby improving the user's experience when charging the electric vehicle.

[0092] The pressure sensor 102 can detect the real-time pressure exerted by the electromagnet 101 on the pressure sensor 102 and transmit this real-time pressure to the charging control unit 100. Before the charging gun is inserted into the charging dock, the electromagnet 101 only attracts the magnetic plate 103. At this time, the pressure exerted by the electromagnet 101 on the magnetic plate 103 against the insulating plate 104 is the first pressure. The pressure exerted by the insulating plate 104 on the pressure sensor 102 is also the first pressure. At this time, the real-time pressure output by the pressure sensor 102 to the charging control unit 100 is the first pressure.

[0093] Step S602, when the real-time pressure is greater than the preset pressure, the charging parameters of the electric vehicle are determined according to the real-time pressure, and the electromagnet 101 is controlled to operate at a second current to generate a magnetic field so that the charging gun remains plugged into the charging base; wherein the second current is greater than the first current.

[0094] Specifically, when the real-time pressure is greater than the preset pressure, it indicates that the charging gun is inserted into the charging dock. Electromagnet 101 simultaneously attracts magnetic conductive plate 103 and charging plate 205 on the charging dock. At this time, the pressure exerted by magnetic conductive plate 103 on insulating plate 104 due to the attraction of electromagnet 101 increases from the first pressure to the second pressure. The pressure exerted by insulating plate 104 on pressure sensor 102 simultaneously changes to the second pressure. At this time, the real-time pressure output by pressure sensor 102 to charging control unit 100 is the second pressure, which is greater than the preset pressure. Therefore, when the real-time pressure received by charging control unit 100 is greater than the preset pressure, charging control unit 100 can determine that the charging gun is inserted into the charging dock.

[0095] Because different types of electric vehicles have different charging parameters, the area of ​​the charging plate 205 on the charging dock also varies. The charging parameter for an electric vehicle is the charging voltage. The higher the charging voltage, the larger the area of ​​the electrode pad 206 on the charging plate 205, and thus the larger the area of ​​the charging plate 205. The lower the charging voltage, the smaller the area of ​​the electrode pad 206 on the charging plate 205, and thus the smaller the area of ​​the charging plate 205. When the charging gun is inserted into the charging dock, the magnetic attraction between the electromagnet 101 and the charging plate 205 varies, resulting in different pressures exerted by the electromagnet 101 on the pressure sensor 102. Therefore, the charging control unit 100 can determine the type of electric vehicle and, therefore, the charging parameters of the electric vehicle based on the real-time pressure output by the pressure sensor 102. Simultaneously, the charging control unit 100 controls the electromagnet 101 to generate a magnetic field at a second current greater than the first current. This strengthens the magnetic field of the electromagnet 101, keeping the charging gun plugged into the charging dock and preventing it from falling out, ensuring proper charging of the electric vehicle.

[0096] For example, designers can experimentally determine the correspondence between the pressure range detected by the pressure sensor 102 and the electric vehicle charging parameters when the charging gun is plugged into the charging base, and store the correspondence between the pressure range and the electric vehicle charging parameters in the memory of the charging control unit 100. When the charging pile is used to charge the electric vehicle, when the charging gun is plugged into the charging base, the charging control unit 100 obtains the real-time pressure collected by the pressure sensor 102, determines the pressure range within which the real-time pressure falls, and determines the charging parameters of the electric vehicle based on the determined pressure range.

[0097] Step S603: charging the electric vehicle according to the charging parameters.

[0098] Specifically, after determining the charging parameters, the charging control unit 100 charges the electric vehicle according to the charging parameters. The charging system provided in the embodiment of the present application can enable a single charging pile to simultaneously meet the charging needs of multiple types of electric vehicles, thereby improving the versatility of the charging pile and meeting the convenience of charging electric vehicles.

[0099] In one embodiment of the present application, after step S603, step S604 is further included.

[0100] Step S604: When the electric vehicle is fully charged, the charging of the electric vehicle is stopped, and the electromagnet 101 is controlled to operate at a first current to generate a magnetic field.

[0101] Specifically, a sign that an electric vehicle is fully charged can be that the charge level of the battery on the electric vehicle is greater than a preset charge level. For example, when the charge level of the battery on the electric vehicle is greater than 90%, the electric vehicle can be deemed fully charged. The charging control unit 100 can communicate with the electric vehicle, and the electric vehicle can transmit the battery charge level information to the charging control unit 100. The charging control unit 100 determines whether the electric vehicle is fully charged by identifying the battery charge level. The charge level of the battery on the electric vehicle varies, and its charging voltage and charging current also vary. When the battery is almost fully charged, the battery charging voltage and charging current decrease. When the charging control unit 100 detects that the charging voltage and charging current of the electric vehicle are less than the preset voltage and preset current, it determines that the electric vehicle is fully charged.

[0102] When the electric vehicle is fully charged, the charging control unit 100 stops charging the electric vehicle and controls the electromagnet 101 to generate a magnetic field at a first current, thereby reducing the magnetic attraction between the charging gun and the charging base so that the user can subsequently unplug the charging gun from the charging base.

[0103] In one embodiment of the present application, after step S604, step S605 is further included.

[0104] Step S605 , when the stop signal is obtained, the power supply to the electromagnet 101 is stopped.

[0105] Specifically, when the electric vehicle is fully charged and the user needs to unplug the charging gun, the user can trigger the switch unit 110 on the charging gun to send a stop signal to the charging control unit 100. After receiving the stop signal, the charging control unit 100 stops supplying power to the electromagnet 101, and the electromagnet 101 no longer generates a magnetic field. At this time, there is no magnetic attraction between the charging gun and the charging base, and the user can smoothly unplug the charging gun from the charging base.

[0106] The charging control method provided in the embodiments of the present application controls the electromagnet 101 on the charging gun to generate a magnetic field during the insertion of the charging gun into the charging base, generating a magnetic attraction force with the charging plate 205 on the charging base. This allows the user to insert the charging gun into the charging base with minimal force, thereby improving the user experience when using the charging pile to charge the electric vehicle. When the charging gun is inserted into the charging base, the charging parameters of the electric vehicle can be determined based on the real-time pressure collected by the pressure sensor 102 in the charging gun, and the electric vehicle is then charged according to the charging parameters. This allows the charging pile to charge different types of electric vehicles, improving the versatility of the charging pile. When the charging pile begins charging the electric vehicle, the electromagnet 101 on the charging gun is controlled to generate a sufficiently large magnetic field to keep the charging gun stably plugged into the charging base. This eliminates the need for additional latching structures on the charging gun and charging base, reducing the production costs of the charging gun and charging base.

[0107] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A charging control method, characterized in that: include: After receiving the start signal, the electromagnet on the charging gun is controlled to operate at a first current to generate a magnetic field, so that a magnetic attraction is generated between the electromagnet and the charging base on the electric vehicle, and the real-time pressure collected by the pressure sensor on the charging gun is obtained; When the real-time pressure is greater than the preset pressure, the charging parameters of the electric vehicle are determined according to the real-time pressure, and the electromagnet is controlled to operate at a second current to generate a magnetic field so that the charging gun remains plugged into the charging base; wherein the second current is greater than the first current; The electric vehicle is charged according to the charging parameters.

2. The charging control method according to claim 1, wherein: After charging the electric vehicle according to the charging parameters, the method further includes: When the electric vehicle is fully charged, charging of the electric vehicle is stopped, and the electromagnet is controlled to operate with the first current to generate a magnetic field.

3. The charging control method according to claim 2, wherein: After the electric vehicle is charged, the charging of the electric vehicle is stopped, and the electromagnet is controlled to operate with the first current to generate a magnetic field, the method further includes: When the stop signal is obtained, the power supply to the electromagnet is stopped.

4. The charging control method according to claim 1, wherein: Determining the charging parameters of the electric vehicle according to the real-time pressure includes: determining a pressure range within which the real-time pressure falls; Determine charging parameters corresponding to the pressure range; wherein the charging parameters include charging voltage.

5. A charging system, characterized in that: The charging pile includes a charging base on an electric vehicle, wherein the charging pile includes a charging control unit and a charging gun, and the charging gun includes a magnetic conductive plate, an insulating plate, a pressure sensor, an electromagnet, a high-voltage wiring harness, and a low-voltage wiring harness. The magnetic conductive plate, the insulating plate, the pressure sensor, and the electromagnet are sequentially arranged in a laminated manner. The multiple magnetic conductive sheets on the magnetic conductive plate are electrically connected to the charging control unit via the high-voltage wiring harness, and the electromagnet and the pressure sensor are electrically connected to the charging control unit via the low-voltage wiring harness. The charging stand includes a base and a charging plate. The base is used to be installed on the electric vehicle. The base is provided with a through hole. The charging plate is arranged in the through hole. The charging plate includes a plurality of electrode sheets. The plurality of electrode sheets are used to electrically connect to the plurality of charging lines on the electric vehicle. When the charging gun is inserted into the charging base, the charging control unit controls the electromagnet to operate at a first current to generate a magnetic field, so as to generate a magnetic attraction between the electromagnet and the charging plate, and obtains the real-time pressure collected by the pressure sensor; When the charging gun is inserted into the charging base, the charging control unit determines the charging parameters of the electric vehicle based on the real-time pressure, and controls the electromagnet to operate at a second current to generate a magnetic field so that the charging gun remains plugged into the charging base; wherein the second current is greater than the first current; The charging control unit charges the electric vehicle according to the charging parameters.

6. The charging system according to claim 5, characterized in that: The insulating plate, the pressure sensor and the electromagnet are all provided with through holes. The high-voltage wiring harness passes through the through holes of the insulating plate, the pressure sensor and the electromagnet and is electrically connected to the magnetic conductive plate.

7. The charging system according to claim 6, characterized in that The charging gun further includes an insulating sleeve, which is passed through the through hole of the insulating plate, the through hole of the pressure sensor, and the through hole of the electromagnet. The high-voltage wire harness is passed through the insulating sleeve and is electrically connected to the magnetic conductive plate.

8. The charging system according to claim 5, characterized in that The charging gun also includes a first insulating partition, on which a plurality of isolation plates are arranged. Each isolation plate is located between two corresponding adjacent magnetic conductive sheets on the magnetic conductive plate, so that all magnetic conductive sheets on the magnetic conductive plate are isolated from each other.

9. The charging system according to any one of claims 5 to 8, characterized in that: The charging gun further includes an insulating shell, the insulating shell is provided with an inner cavity, and the magnetic conductive plate, the insulating plate and the electromagnet are all arranged in the inner cavity of the insulating shell.

10. The charging system according to claim 9, characterized in that: The charging gun further includes a switch unit, which is disposed on the outer shell of the insulating housing and is electrically connected to a corresponding low-voltage line in the low-voltage wiring harness.

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