Charging system

Abstract

The invention discloses a charging system, relates to the technical field of vehicle charging, and aims to solve the problem of how to improve the plugging and unplugging smoothness of a charging gun and a charging port structure. The charging system comprises a charging port structure arranged on a vehicle and a charging gun, wherein the charging gun is used for being matched with the charging port structure to charge the vehicle; the charging gun is arranged in the charging port structure, the first electromagnetic coil is arranged on one of the charging port structure and the charging gun, and the first magnetic part is arranged on the other one of the charging port structure and the charging gun; the current flow direction of the first electromagnetic coil can be adjusted so as to adjust the magnetism of the first electromagnetic coil.

Description

Technical Field

[0001] This application relates to the field of vehicle charging technology, and more particularly to a charging system. Background Technology

[0002] Electric vehicles typically charge their batteries via a charging port structure that works in conjunction with a charging gun to ensure normal vehicle operation. To guarantee safety during the charging process, national standards specify the insertion and extraction force of the charging gun. Specifically, the insertion and extraction force between the charging port structure and the charging gun should be less than 100N for AC power and less than 140N for DC power.

[0003] In the prior art, with prolonged use of the charging gun and vehicle charging port structure, the outer shell of the charging gun and charging port structure may deform due to material aging and other reasons, which increases the insertion and extraction force and causes problems with smooth insertion and extraction between the charging gun and the charging port structure. Summary of the Invention

[0004] The purpose of this application is to provide a charging system that aims to solve the problem of how to improve the smoothness of plugging and unplugging the charging gun and charging port structure.

[0005] This application provides a charging system, including a charging port structure and a charging gun disposed on a vehicle, the charging gun being used to charge the vehicle in cooperation with the charging port structure; and a first electromagnetic coil and a first magnetic element, the first electromagnetic coil being disposed on one of the charging port structure and the charging gun, and the first magnetic element being disposed on the other of the charging port structure and the charging gun; the current flow direction of the first electromagnetic coil can be adjusted to adjust the magnetism of the first electromagnetic coil.

[0006] In the above scheme, one of the charging gun and the charging port structure is equipped with a first electromagnetic coil, and the other with a first magnetic component. The current flow direction of the first electromagnetic coil is adjustable. This allows the current flow direction in the first electromagnetic coil to be controlled during insertion, causing the coil to generate an attractive magnetic force with the first magnetic component. This attractive force can counteract at least a portion of the friction between the charging gun and the charging port structure during insertion, improving the smoothness of the insertion process. Conversely, during removal, the current flow direction in the first electromagnetic coil is controlled to be opposite to that during insertion, causing the coil to generate a repulsive magnetic force with the first magnetic component. This repulsive force can also counteract at least a portion of the friction between the charging gun and the charging port structure during removal, improving the smoothness of the removal process.

[0007] Optionally, the charging port structure is provided with a first receiving groove for accommodating the charging gun, the first electromagnetic coil is disposed in the first receiving groove, and the first magnetic element is disposed in the charging gun.

[0008] Optionally, the first receiving groove has an opening and a bottom wall surface disposed opposite to each other, and a peripheral wall located between the opening and the bottom wall surface, wherein the first electromagnetic coil is disposed on the peripheral wall and extends circumferentially along the peripheral wall.

[0009] Optionally, the charging port structure further includes a female terminal, which is disposed in the first receiving groove and has a plug hole for plugging into the male terminal of the charging gun.

[0010] The charging system also includes a magnetic conductor, which is arranged around the outer peripheral surface of the female terminal.

[0011] Optionally, the magnetic conductor is a cylindrical iron core.

[0012] Optionally, the first magnetic component includes a second electromagnetic coil, which is disposed on the end face of the charging end of the charging gun.

[0013] Optionally, it also includes a power supply and a first switch, the first switch being connected between the power supply and the first electromagnetic coil, for energizing the first electromagnetic coil and adjusting the current flow direction of the first electromagnetic coil.

[0014] Optionally, the first switch includes a first terminal, a second terminal, a third terminal, a fourth terminal, a first conductive knife switch, and a second conductive knife switch. The first conductive knife switch is electrically connected to the positive terminal of the power supply, and the second conductive knife switch is electrically connected to the negative terminal of the power supply. The first terminal and the second terminal are electrically connected and also electrically connected to one end of the first electromagnetic coil, while the third terminal and the fourth terminal are electrically connected and also electrically connected to the other end of the first electromagnetic coil.

[0015] When the first conductive knife switch is electrically connected to the first terminal and the second conductive knife switch is electrically connected to the third terminal, the first electromagnetic coil carries a current in a first direction. When the first conductive knife switch is electrically connected to the fourth terminal and the second conductive knife switch is electrically connected to the second terminal, the first electromagnetic coil carries a current in a second direction, the first direction being opposite to the second direction.

[0016] Optionally, the charging system further includes a second switch, which is connected between the positive terminal of the power supply and the first switch, for controlling the connection and disconnection between the power supply and the first switch.

[0017] Optionally, the charging system further includes a first resistor connected between the second switch and the first switch.

[0018] Optionally, the charging system further includes a first magnetic force adjustment component, which is connected in parallel with the second switch. The first magnetic force adjustment component includes a third switch and a second resistor. One end of the third switch is connected to the positive terminal of the power supply, and the other end of the third switch is connected to one end of the second resistor. The other end of the second resistor is connected to a wire between the second switch and the first resistor.

[0019] Optionally, the charging system further includes a second magnetic force adjustment component, which is connected in parallel with the third switch. The second magnetic force adjustment component includes a fourth switch and a third resistor. One end of the fourth switch is connected to the positive terminal of the power supply, and the other end of the fourth switch is connected to one end of the third resistor. The other end of the third resistor is connected to a wire between the third switch and the second resistor.

[0020] Optionally, the charging system further includes a controller, which is electrically connected to the first switch and configured to:

[0021] When the operator connects the charging gun to the charging interface structure, the first switch is closed and a current in the first direction is supplied to the first electromagnetic coil so that the magnetism of the first electromagnetic coil is opposite to the magnetism of the first magnetic component.

[0022] When the operator pulls the charging gun out of the charging interface structure, the first switch is closed and a second-direction current is supplied to the first electromagnetic coil so that the magnetism of the first electromagnetic coil is the same as that of the first magnetic component, and the first direction is opposite to the second direction.

[0023] Optionally, the charging system also includes a camera for capturing images of the operator to obtain the operator's gender and height.

[0024] The controller is also configured to:

[0025] Obtain the operator's gender and height;

[0026] If the operator is male and his / her height is greater than or equal to the preset height, then a current of the first current value is passed into the first electromagnetic coil.

[0027] If the operator is male and his / her height is less than the preset height, then a current of the second current value is passed into the first electromagnetic coil.

[0028] If the operator is female, a third current value is supplied to the first electromagnetic coil. The third current value is greater than the second current value, and the second current value is greater than the first current value. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of this application;

[0031] Figure 2 for Figure 1 A schematic diagram of the charging system in the vehicle shown.

[0032] Figure 3 for Figure 2 The circuit control diagram of the first electromagnetic coil in the charging system is shown.

[0033] Figure label:

[0034] 100. Vehicles;

[0035] 10. Vehicle body;

[0036] 1. Charging port structure; 11. First electromagnetic coil; 12. First receiving slot; 13. Female terminal; 14. Magnetic conductive component;

[0037] 2. Charging gun; 21. First magnetic component; 22. Male terminal;

[0038] 31. Power supply; 32. First switch; 321. First terminal; 322. Second terminal; 323. Third terminal; 324. Fourth terminal; 325. First conductive knife switch; 326. Second conductive knife switch; 33. First resistor; 34. Second switch; 35. Third switch; 36. Second resistor; 37. Fourth switch; 38. Third resistor;

[0039] 4. Controller. Detailed Implementation

[0040] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0041] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0042] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0043] In the embodiments of this application, "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, said acceptable deviation range being determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range for approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range for approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0044] To facilitate understanding of the technical solutions provided in the embodiments of this application, the application scenarios of the charging system provided in this application are described below:

[0045] This application provides a charging system for charging the battery of a vehicle 100. The battery of the vehicle 100 is typically connected to a charging port structure 1 located on the vehicle body 10 via a circuit structure. During charging, a charging gun 2 connected to an external power source is plugged into the charging port structure 1 of the vehicle 100 to connect the battery and the external power source, thereby enabling the charging of the battery of the vehicle 100.

[0046] Since some structures in the charging port structure 1 and charging gun 2 of vehicle 100 are usually made of plastic, as the number of times the charging gun 2 or charging port structure 1 is used increases, the plastic parts in the charging port structure 1 and charging gun 2 are prone to deformation due to material aging and other reasons, which leads to an increase in the insertion and extraction force between the charging gun 2 and the charging port structure 1, reducing the smoothness of insertion and extraction between the charging gun 2 and the charging port structure 1.

[0047] The charging system provided in this application embodiment has a first electromagnetic coil 11 and a first magnetic element 21 respectively installed in the charging port structure 1 and the charging gun 2. When inserting the gun, the direction of the current in the first electromagnetic coil 11 is controlled to generate a magnetic force that attracts the first magnetic element 21, thus assisting in inserting the gun; when removing the gun, the direction of the current in the first electromagnetic coil 11 is controlled to generate a magnetic force that repels the first magnetic element 21, thus assisting in removing the gun.

[0048] As can be seen from the above description, the charging system provided in this application embodiment achieves insertion and removal assistance through the magnetic force between the first electromagnetic coil 11 and the first magnetic component 21, thereby improving the smoothness of insertion and removal between the charging gun 2 and the charging port structure 1.

[0049] See Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 100 provided in an embodiment of this application. The vehicle 100 can be a pure electric vehicle, a plug-in hybrid electric vehicle, a range-extended electric vehicle, etc. The vehicle 100 can also be a sedan, truck, bus, lorry, trailer, etc. This application does not specifically limit the type of vehicle 100.

[0050] The vehicle 100 includes a body 10, which can be equipped with a power unit for driving the vehicle 100. In order to charge the battery in the vehicle 100, a charging port structure 1 can be provided in the body 10, and the charging port structure 1 is connected to the battery through a circuit structure.

[0051] The charging port structure 1 can be either an AC charging port structure 1 or a DC charging port structure 1. The charging port structure 1 is used to connect to the charging gun 2 on the charging pile to input electrical energy, thereby charging the battery of the vehicle 100.

[0052] See Figure 2 , Figure 2 for Figure 1 The diagram shows the structure of the charging system in the vehicle 100. The charging system includes a charging port structure 1 on the vehicle 100 and a charging gun 2 connected to a charging pile. The charging gun 2 works in conjunction with the charging port structure 1 to charge the vehicle 100. It also includes a first electromagnetic coil 11 and a first magnetic element 21. The first electromagnetic coil 11 is located in one of the charging port structure 1 and the charging gun 2, and the first magnetic element 21 is located in the other. Furthermore, the current flow direction of the first electromagnetic coil 11 can be adjusted to regulate its magnetism.

[0053] In the above scheme, one of the charging gun 2 and the charging port structure 1 is provided with a first electromagnetic coil 11, and the other is provided with a first magnetic element 21, and the current flow direction of the first electromagnetic coil 11 can be adjusted. In this way, during the insertion process, controlling the current flow direction in the first electromagnetic coil 11 causes the first electromagnetic coil 11 to generate a magnetic force that attracts the first magnetic element 21. This attracting magnetic force can counteract at least a portion of the frictional force between the charging gun 2 and the charging port structure 1 during insertion, improving the smoothness of the insertion process. During the removal process, controlling the current flow direction in the first electromagnetic coil 11 to be opposite to the current flow direction during insertion causes the first electromagnetic coil 11 to generate a magnetic force that repels the first magnetic element 21. This repulsive magnetic force can counteract at least a portion of the frictional force between the charging gun 2 and the charging port structure 1 during removal, improving the smoothness of the removal process.

[0054] In some examples, the first electromagnetic coil 11 is disposed in the charging port structure 1, and the first magnetic element 21 is disposed in the charging gun 2.

[0055] In other examples, a first electromagnetic coil 11 is disposed in the charging gun 2, and a first magnetic element 21 is disposed in the charging port structure 1.

[0056] In some examples, the first electromagnetic coil 11 may be made of copper wire or other conductive wire.

[0057] In some examples, the first magnetic element 21 can be a permanent magnet, and the material can be one of rare earth permanent magnet materials, samarium cobalt or alnico, etc. The permanent magnet has fixed N pole and S pole.

[0058] When current flows through the first electromagnetic coil 11, it generates a magnetic field with a north pole and a south pole. When the north pole of the magnetic field generated by the first electromagnetic coil 11 approaches the north pole of the first magnetic component 21, a repulsive magnetic force is generated between them, which can assist in pulling out the gun. When the south pole of the magnetic field generated by the first electromagnetic coil 11 approaches the north pole of the first magnetic component 21, a magnetic attraction is generated between them, which can assist in inserting the gun.

[0059] It should be understood that the side of the first magnetic element 21 facing the first electromagnetic coil 11 may be the N pole of the magnetic field generated by the first magnetic element 21 or the S pole of the magnetic field generated by the first magnetic element 21.

[0060] In some embodiments, the charging port structure 1 has a first receiving groove 12 for accommodating the charging gun 2, a first electromagnetic coil 11 is disposed in the first receiving groove 12, and a first magnetic element 21 is disposed in the charging gun 2. The first electromagnetic coil 11 is disposed in the first receiving groove 12 of the charging port structure 1, and the first magnetic element 21 is disposed in the charging gun 2. When inserting the charging gun, the first electromagnetic coil 11 generates a magnetic force that attracts the first magnetic element 21 within the first receiving groove 12, facilitating the insertion of the charging gun 2 into the first receiving groove 12. When removing the charging gun, the first electromagnetic coil 11 generates a magnetic force that repels the first magnetic element 21 within the first receiving groove 12, facilitating the removal of the charging gun 2 from the first receiving groove 12, thus improving the smoothness of inserting and removing the charging gun 2 from the first receiving groove 12.

[0061] In some examples, the first receiving slot 12 is a circular slot, and during the charging process, the charging gun 2 is inserted into the first receiving slot 12 to charge the vehicle 100.

[0062] In some examples, the first electromagnetic coil 11 is located at the end of the first receiving slot 12 away from the charging gun 2.

[0063] In some embodiments, the first magnetic component 21 includes a second electromagnetic coil, which is disposed on the end face of the charging terminal of the charging gun 2. The first electromagnetic component includes the second electromagnetic coil, and the magnetism of the second electromagnetic coil can be controlled by controlling the flow of current through it. When the charging gun 2 is not in use, the current in the second electromagnetic coil is disconnected, and the magnetism of the second electromagnetic coil disappears. This prevents iron filings and other debris from magnetically adsorbing onto the surface of the charging gun 2, thus avoiding an increase in the insertion and extraction force between the charging gun 2 and the charging port structure 1.

[0064] In some examples, the second electromagnetic coil is made of copper wire or other conductive wire and is located on the end face of the charging end of the charging gun 2.

[0065] In some examples, the second electromagnetic coil can be connected to the end face of the charging end of the charging gun 2 by means of bonding or embedding.

[0066] In some embodiments, the first receiving groove 12 has an opening and a bottom wall surface disposed opposite each other, and a peripheral wall located between the opening and the bottom wall surface. The first electromagnetic coil 11 is disposed within the peripheral wall and extends circumferentially along the peripheral wall. By disposing the first electromagnetic coil 11 within the peripheral wall of the first receiving groove 12 and extending circumferentially along the peripheral wall, the first receiving groove 12 is equivalent to being within the space enclosed by the first electromagnetic coil 11. Since the first magnetic element 21 can be disposed on the end face of the charging end of the charging gun 2, when the charging gun 2 is inserted into the first receiving groove 12, the first magnetic element 21 is located within the first receiving groove 12. In this way, when the first electromagnetic coil 11 generates a magnetic field during charging, the first magnetic element 21 is located in the middle of the magnetic field of the first electromagnetic coil 11, which can enhance the interaction force between the magnetic field generated by the first electromagnetic coil 11 and the magnetic field of the first magnetic element 21.

[0067] In some examples, the charging gun 2 extends into the first receiving slot 12 through the opening of the first receiving slot 12.

[0068] In other embodiments, the first electromagnetic coil 11 is disposed on the bottom wall of the first receiving groove 12.

[0069] In some implementations, see Figure 2 The charging port structure 1 also includes a female terminal 13, which is disposed in the first receiving groove 12. The female terminal 13 is provided with a plug hole for plugging in the male terminal 22 of the charging gun 2. The male terminal 22 and the female terminal 13 cooperate to realize the electrical conduction between the charging port structure 1 and the charging gun 2, so as to charge the battery of the vehicle 100.

[0070] The charging system also includes a magnetic conductor 14, which is arranged around the outer peripheral surface of the female terminal 13.

[0071] A magnetic conductive element 14 is provided on the outer peripheral surface of the female terminal 13. The magnetic conductive element 14 is equivalent to the iron core being located in the magnetic field generated by the first electromagnetic coil, which can enhance the magnetic field of the first electromagnetic coil, thereby increasing the magnetic force between the first electromagnetic coil and the first magnetic element.

[0072] In some examples, the material of the magnetic conductor 14 may include metallic iron.

[0073] In other examples, the material of the magnetic conductor 14 may include metallic copper.

[0074] In some examples, the magnetic conductor 14 is a cylindrical iron core, which can be cylindrical, square, etc.

[0075] In some implementations, see Figure 3It also includes a power supply 31 and a first switch 32. The first switch 32 is connected between the power supply 31 and the first electromagnetic coil 11, used to energize the first electromagnetic coil 11 and adjust the current flow direction of the first electromagnetic coil 11. By setting the power supply 31 and the first switch 32, the current flow direction in the first electromagnetic coil 11 is controlled, thereby causing the first electromagnetic coil 11 to generate a magnetic force that attracts or repels the first magnetic component 21, thus assisting in the insertion and removal of the charging gun. The structure is simple and the performance is stable, improving the smoothness of insertion and removal between the charging gun 2 and the charging port structure 1.

[0076] In some examples, power source 31 can be the battery of vehicle 100 or a separately configured battery.

[0077] In some examples, the first switch 32 may be a double-pole double-throw switch.

[0078] In some examples, the first switch 32 includes a first terminal 321, a second terminal 322, a third terminal 323, a fourth terminal 324, a first conductive blade 325, and a second conductive blade 326. The first conductive blade 325 is electrically connected to the positive terminal of the power supply 31, and the second conductive blade 326 is electrically connected to the negative terminal of the power supply 31. The first terminal 321 and the second terminal 322 are electrically connected and to one end of the first electromagnetic coil 11, while the third terminal 323 and the fourth terminal 324 are electrically connected and to the other end of the first electromagnetic coil 11.

[0079] When the first conductive knife switch 325 is electrically connected to the first terminal 321 and the second conductive knife switch 326 is electrically connected to the third terminal 323, the first electromagnetic coil 11 carries a current in a first direction. When the first conductive knife switch 325 is electrically connected to the fourth terminal 324 and the second conductive knife switch 326 is electrically connected to the second terminal 322, the first electromagnetic coil 11 carries a current in a second direction, the first direction being opposite to the second direction.

[0080] In the above scheme, the first conductive knife switch 325 switches its electrical connection to the first terminal 321 and the second terminal 322, and the second conductive knife switch 326 switches its electrical connection to the third terminal 323 and the fourth terminal 324, thereby switching the current flow direction in the first electromagnetic coil 11 between the first direction and the second direction. This enables the first electromagnetic coil 11 to generate a magnetic force that is the same as or repulsive to the first magnetic component 21, facilitating the insertion and removal of the charging gun 2 from the charging port structure 1 and improving the smoothness of insertion and removal of the charging gun 2.

[0081] In some examples, when current flows in the first electromagnetic coil 11 along the first direction, the first electromagnetic coil 11 generates a magnetic force that attracts the first magnetic element 21. For example, the side of the first magnetic element 21 facing the charging port structure 1 is the N pole of the magnetic field of the first magnetic element 21. When current flows in the first electromagnetic coil 11 along the first direction, the S pole of the magnetic field generated by the first electromagnetic coil 11 faces the first magnetic element 21. When the charging gun is inserted, due to the attraction between opposite magnetic poles, the first electromagnetic coil 11 and the first magnetic element 21 generate an attractive magnetic force. Since the first electromagnetic coil 11 and the first magnetic element 21 are respectively located in the charging port structure 1 and the charging gun 2, an attractive magnetic force is generated between the charging port structure 1 and the charging gun 2. This attractive magnetic force can offset part of the friction force when inserting the charging gun, thus providing assistance in inserting the charging gun.

[0082] Since the second direction is opposite to the first direction, when current flows in the first electromagnetic coil 11 along the second direction, the N and S poles of the magnetic field generated by the first electromagnetic coil 11 are opposite in direction to the N and S poles when the current flows along the first direction. At this time, the N pole of the magnetic field generated by the first electromagnetic coil 11 is close to the N pole of the first magnetic component 21. Due to the repulsive force generated by like magnetic poles, the first electromagnetic coil 11 and the first magnetic component 21 generate a repulsive magnetic force. In this way, a repulsive magnetic force exists between the charging port structure 1 and the charging gun 2. This repulsive magnetic force can offset part of the friction force when pulling out the gun, thus providing assistance in inserting the gun.

[0083] In other examples, when current flows in the first electromagnetic coil 11 in the first direction, the first electromagnetic coil 11 generates a magnetic force that repels the first magnetic element 21; when current flows in the first electromagnetic coil 11 in the second direction, the first electromagnetic coil 11 generates a magnetic force that attracts the first magnetic element 21. The principle is the same as the working principle described above, and will not be repeated here.

[0084] In some implementations, see Figure 3 The charging system also includes a second switch 34, which is connected between the positive terminal of the power supply 31 and the first switch 32 to control the on / off state of the power supply 31 and the first switch 32. By controlling the on / off state of the power supply 31 and the first switch 32 through the second switch 34, the current in the first electromagnetic coil 11 can be controlled. When inserting or removing the charging gun, the first switch 32 can be used to connect the current in the first electromagnetic coil 11, providing assistance and improving the smoothness of insertion and removal. When not inserting or removing the charging gun, the first switch 32 cuts off the current in the first electromagnetic coil 11, saving energy and preventing the magnetic field generated by the first electromagnetic coil 11 during the charging of the vehicle 100 battery from affecting the charging efficiency.

[0085] In some examples, the second switch 34 may be an electromagnetic switch.

[0086] In some examples, the second switch 34 may be a single-pole single-throw switch.

[0087] In some implementations, see Figure 3 The charging system also includes a first resistor 33, which is connected between the second switch 34 and the first switch 32. By placing the first resistor 33 between the second switch 34 and the first switch 32, the first resistor 33 can limit the magnitude of the current flowing through the first electromagnetic coil 11, preventing the current value flowing through the first electromagnetic coil 11 from being too large and causing damage to the components in the circuit.

[0088] In some implementations, see Figure 3 The charging system also includes a first magnetic force adjustment component, which is connected in parallel with the second switch 34. The first magnetic force adjustment component includes a third switch 35 and a second resistor 36. One end of the third switch 35 is connected to the positive terminal of the power supply 31, and the other end of the third switch 35 is connected to one end of the second resistor 36. The other end of the second resistor 36 is connected to the wire between the second switch 34 and the first resistor 33. By connecting one end of the third switch 35 to the positive terminal of the power supply 31 and the other end to one end of the second resistor 36, the other end of the second resistor 36 is connected to the wire between the second switch 34 and the first resistor 33. The number of resistors through which the current flows in the circuit can be adjusted by switching the second switch 34 and the third switch 35 on and off, thereby adjusting the magnitude of the current and thus regulating the magnetic field strength of the first electromagnetic coil 11. The first magnetic force adjustment component can provide different levels of magnetic assistance for inserting and removing the charging gun under different conditions, improving the flexibility of assisting in inserting and removing the charging gun.

[0089] In some examples, when the third switch 35 is open and the second switch 34 is closed, the current flows only through the first resistor 33.

[0090] In other examples, when the third switch 35 is closed and the second switch 34 is open, the first resistor 33 and the second resistor 36 are connected in series, and current flows through both resistors. The current flowing through both resistors is relatively smaller than the current flowing only through the first resistor 33. Furthermore, the magnetic field strength generated by the first electromagnetic coil 11 is positively correlated with the magnitude of the current flowing through it; that is, the larger the current, the stronger the magnetic field generated by the first electromagnetic coil 11. Therefore, two-stage magnetic force adjustment is achieved by setting up the first magnetic force adjustment component.

[0091] In some implementations, see Figure 3The charging system also includes a second magnetic adjustment component, which is connected in parallel with the third switch 35. The second magnetic adjustment component includes a fourth switch 37 and a third resistor 38. One end of the fourth switch 37 is connected to the positive terminal of the power supply 31, and the other end of the fourth switch 37 is connected to one end of the third resistor 38. The other end of the third resistor 38 is connected to a wire between the third switch 35 and the second resistor 36.

[0092] In the above scheme, one end of the fourth switch 37 is connected to the positive terminal of the power supply 31, and the other end is connected to one end of the third resistor 38. The other end of the third resistor 38 is connected to the wire between the third switch 35 and the second resistor 36. The number of resistors through which the current flows in the circuit can be adjusted by switching the second switch 34, the third switch 35, and the fourth switch 37 on and off, thereby adjusting the magnitude of the current and thus the magnetic field strength of the first electromagnetic coil 11. The second magnetic force adjustment component can provide different levels of magnetic assistance for inserting and removing the gun under different conditions, improving the flexibility of assisting in inserting and removing the gun.

[0093] In some examples, the fourth switch 37 is closed simultaneously with the first switch 32, while the other switches are open. At this time, the first resistor 33, the second resistor 36, and the third resistor 38 are connected in series, and current flows through all three resistors simultaneously. The current flowing through the first electromagnetic coil 11 is at its minimum value, the first current value. The first electromagnetic coil 11 can generate a relatively weak magnetic field, and the magnetic force between the first electromagnetic coil 11 and the first magnetic component 21 is relatively small.

[0094] In some examples, the second switch 34 is closed simultaneously with the first switch 32, while the other switches are open. At this time, the current of the first electromagnetic coil 11 flows only through the first resistor 33, and the maximum current value flowing through the first electromagnetic coil 11 is the third current value. The first electromagnetic coil 11 can generate a relatively strong magnetic field, and the magnetic force between the first electromagnetic coil 11 and the first magnetic component 21 is relatively large.

[0095] In some examples, the third switch 35 is closed simultaneously with the first switch 32, while the other switches are open. At this time, the first resistor 33 and the second resistor 36 are connected in series, and the current flowing through both resistors is the second current value. Since the third current value is greater than the second current value, and the second current value is greater than the first current value, the first electromagnetic coil 11 can generate a magnetic field of moderate strength. Specifically, the magnetic field generated by the first electromagnetic coil 11 is stronger than that generated under the first current value, but weaker than that generated under the third current value.

[0096] In some embodiments, the charging system further includes a controller 4, which is electrically connected to the first switch 32 and configured to:

[0097] When the operator connects the charging gun 2 to the charging interface structure, the first switch 32 is closed and a first directional current is supplied to the first electromagnetic coil 11 so that the magnetism of the first electromagnetic coil 11 is opposite to the magnetism of the first magnetic component 21.

[0098] When the operator pulls the charging gun 2 out of the charging interface structure, the first switch 32 is closed and a second-direction current is supplied to the first electromagnetic coil 11 so that the magnetism of the first electromagnetic coil 11 is the same as that of the first magnetic component 21, and the first direction is opposite to the second direction.

[0099] In the above scheme, when the operator connects the charging gun 2 to the charging interface structure, the first electromagnetic coil 11 generates a magnetic field with the opposite magnetic properties to those of the first magnetic component 21. At this time, the first electromagnetic coil 11 and the first magnetic component 21 generate an attractive magnetic force. Since the first electromagnetic coil 11 and the first magnetic component 21 are respectively located on the charging port structure 1 and the charging gun 2, there is also an attractive magnetic force between the charging gun 2 and the charging port structure 1. This attractive magnetic force can counteract at least a portion of the frictional force during the insertion process of the charging gun 2 and the charging port structure 1, thereby providing assistance when inserting the gun and making the insertion easier and smoother.

[0100] When the operator pulls the charging gun 2 out of the charging port structure, the first electromagnetic coil 11 generates a magnetic field with the same magnetism as the first magnetic component 21. At this time, the first electromagnetic coil 11 and the first magnetic component 21 generate a repulsive magnetic force. Since the first electromagnetic coil 11 and the first magnetic component 21 are respectively located in the charging port structure 1 and the charging gun 2, there is also a repulsive magnetic force between the charging gun 2 and the charging port structure 1. This repulsive magnetic force can counteract at least part of the frictional force during the process of the charging gun 2 separating from the charging port structure 1, thereby providing assistance when pulling out the gun and making it easier and smoother to pull out.

[0101] In some examples, the operator's actions of connecting the charging gun 2 to the charging interface structure and disconnecting it from the structure can be detected by a camera. This camera can be a camera installed on the vehicle 100, such as a camera installed in the rearview mirror, or a camera installed at the front or rear of the vehicle. The camera identifies the operator's actions through the captured video.

[0102] In other examples, the docking of the charging gun 2 with the charging interface structure and the removal of the charging gun 2 from the charging interface structure can be identified through the operator's active operation. To prevent the charging gun 2 from detaching from the charging port structure 1 during charging, a locking hook is usually provided on the charging gun 2, and a locking groove is provided on the charging port structure 1. The locking hook and locking groove are engaged to prevent them from detaching. A button is provided at the other end of the locking hook, which controls the locking state between the locking hook and the locking groove. The charging status of the vehicle 100 and the operator's operation of the button can be combined to determine the insertion and removal of the charging gun, thereby controlling the first electromagnetic coil 11 to generate a magnetic force that attracts or repels the first magnetic component 21.

[0103] For example, if the operator presses the button on the charging gun 2 that is linked to the locking hook, and the vehicle 100 was in a non-charging state for a certain period of time before the button was pressed, it can be determined that the operator has connected the charging gun 2 to the charging interface structure. At this time, the first switch 32 is closed, and a current in the first direction is supplied to the first electromagnetic coil 11, so that the magnetism of the first electromagnetic coil 11 is opposite to the magnetism of the first magnetic component 21, thereby generating an attractive magnetic force to assist in the insertion of the charging gun.

[0104] If the operator presses the button on the charging gun 2 that is linked to the locking hook, and the vehicle 100 was in a charging state for a certain period of time before the button was pressed, it can be determined that the operator has pulled the charging gun 2 out of the charging interface structure. At this time, the first switch 32 is closed, and a second-direction current is supplied to the first electromagnetic coil 11 so that the magnetism of the first electromagnetic coil 11 is the same as the magnetism of the first magnetic component 21, thereby generating a repulsive magnetic force and achieving the assistance of pulling out the gun.

[0105] In some implementations, the charging system also includes a camera for capturing images of the operator to obtain the operator's gender and height.

[0106] Controller 4 is also configured as follows:

[0107] Obtain the operator's gender and height;

[0108] If the operator is male and his / her height is greater than or equal to the preset height, then a current of the first current value is supplied to the first electromagnetic coil 11.

[0109] If the operator is male and his / her height is less than the preset height, then a current of the second current value is supplied to the first electromagnetic coil 11.

[0110] If the operator is female, a third current value is supplied to the first electromagnetic coil 11. The third current value is greater than the second current value, and the second current value is greater than the first current value.

[0111] In the above scheme, the operator's gender and height are acquired via a camera, and the current to be applied to the first electromagnetic coil 11 is determined based on the operator's gender and height, specifying a first, second, or third current value. The third current value is greater than the second current value, and the second current value is greater than the first current value. The higher the current value, the stronger the magnetic field generated by the first electromagnetic coil 11. This creates a three-level magnetic force assistance between the first electromagnetic coil 11 and the first magnetic component 21, providing different levels of magnetic force assistance according to the operator's specific situation, ensuring that different operators can smoothly insert and remove the gun using magnetic assistance.

[0112] In some examples, to facilitate the controller 4's control of the first switch 32, the second switch 34, the third switch 35, and the fourth switch 37, the first switch 32, the second switch 34, the third switch 35, and the fourth switch 37 are all electromagnetic switches.

[0113] In some examples, the preset height can be 1.6 meters. If the operator is determined to be male and 1.6 meters or taller, it can be assumed that the operator has relatively greater strength, and a first-level magnetic force can be provided by supplying a first-level current to the first electromagnetic coil 11. Specifically, the fourth switch 37 and the first switch 32 are closed simultaneously, while the other switches are open. At this time, the first resistor 33, the second resistor 36, and the third resistor 38 are connected in series, and the first current value is the current value when the first resistor 33, the second resistor 36, and the third resistor 38 flow simultaneously.

[0114] In some examples, the preset height can be 1.6 meters. If the operator is determined to be male and shorter than 1.6 meters, it can be assumed that the operator's strength is relatively average, and a second current value is supplied to the first electromagnetic coil 11 to provide secondary magnetic assistance. Specifically, the third switch 35 and the first switch 32 are closed simultaneously, while the other switches are open. At this time, the first resistor 33 and the second resistor 36 are connected in series, and the second current value is the current value when the first resistor 33 and the second resistor 36 flow simultaneously.

[0115] In some examples, if the operator is determined to be female, it can be assumed that the operator has relatively less strength. Passing a third current value into the first electromagnetic coil 11 can provide a third level of magnetic assistance. Specifically, the second switch 34 and the first switch 32 are closed simultaneously, while the other switches are open. At this time, the current flowing into the first electromagnetic coil 11 only flows through the first resistor 33. The third current value is the current value when the current only flows through the first resistor 33.

[0116] As described above, the third current value is greater than the second current value, and the second current value is greater than the first current value. The greater the current flowing through the first electromagnetic coil 11, the stronger the magnetic field generated by the first electromagnetic coil 11, and the greater the magnetic force between the first electromagnetic coil 11 and the first magnetic component 21.

[0117] This embodiment determines the operator's strength by acquiring their gender and height, and then provides different levels of magnetic assistance. Specifically, the less strength the operator has, the greater the magnetic assistance provided by the charging system, thus ensuring smooth insertion and removal of the charging gun.

[0118] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0119] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging system, characterized in that, Includes a charging port structure and a charging gun mounted on the vehicle, the charging gun being used in conjunction with the charging port structure to charge the vehicle; and A first electromagnetic coil and a first magnetic element, wherein the first electromagnetic coil is disposed in one of the charging port structure and the charging gun, and the first magnetic element is disposed in the other of the charging port structure and the charging gun; The direction of current flow in the first electromagnetic coil can be adjusted to regulate the magnetism of the first electromagnetic coil.

2. The charging system according to claim 1, characterized in that, The charging port structure is provided with a first receiving groove for accommodating the charging gun, the first electromagnetic coil is disposed in the first receiving groove, and the first magnetic element is disposed in the charging gun.

3. The charging system according to claim 2, characterized in that, The first receiving groove has an opening and a bottom wall surface disposed opposite to each other, and a peripheral wall located between the opening and the bottom wall surface. The first electromagnetic coil is disposed in the peripheral wall and extends circumferentially along the peripheral wall.

4. The charging system according to claim 3, characterized in that, The charging port structure also includes a female terminal, which is disposed in the first receiving groove. The female terminal is provided with a plug hole, which is used to plug into the male terminal of the charging gun. The charging system also includes a magnetic conductor, which is arranged around the outer peripheral surface of the female terminal.

5. The charging system according to any one of claims 1-4, characterized in that, The first magnetic component includes a second electromagnetic coil, which is disposed on the end face of the charging end of the charging gun.

6. The charging system according to any one of claims 1-4, characterized in that, It also includes a power supply and a first switch, the first switch being connected between the power supply and the first electromagnetic coil, used to energize the first electromagnetic coil and adjust the current flow direction of the first electromagnetic coil.

7. The charging system according to claim 6, characterized in that, The first switch includes a first terminal, a second terminal, a third terminal, a fourth terminal, a first conductive knife switch, and a second conductive knife switch; The first conductive knife switch is electrically connected to the positive terminal of the power supply, and the second conductive knife switch is electrically connected to the negative terminal of the power supply. The first terminal and the second terminal are electrically connected and electrically connected to one end of the first electromagnetic coil; the third terminal and the fourth terminal are electrically connected and electrically connected to the other end of the first electromagnetic coil. When the first conductive knife switch is electrically connected to the first terminal and the second conductive knife switch is electrically connected to the third terminal, the first electromagnetic coil carries current in the first direction; When the first conductive knife switch is electrically connected to the fourth terminal and the second conductive knife switch is electrically connected to the second terminal, the first electromagnetic coil carries current in a second direction, which is opposite to the second direction. It also includes a second switch and a first resistor. The second switch is connected between the positive terminal of the power supply and the first switch to control the on / off state of the power supply and the first switch. The first resistor is connected between the second switch and the first switch.

8. The charging system according to claim 7, characterized in that, It also includes a first magnetic adjustment component and a second magnetic adjustment component, wherein the first magnetic adjustment component is connected in parallel with the second switch; The first magnetic force adjustment component includes a third switch and a second resistor. One end of the third switch is connected to the positive terminal of the power supply, and the other end of the third switch is connected to one end of the second resistor. The other end of the second resistor is connected to a wire between the second switch and the first resistor. The second magnetic force adjustment component is connected in parallel with the third switch; The second magnetic force adjustment component includes a fourth switch and a third resistor. One end of the fourth switch is connected to the positive terminal of the power supply, and the other end of the fourth switch is connected to one end of the third resistor. The other end of the third resistor is connected to a wire between the third switch and the second resistor.

9. The charging system according to claim 6, characterized in that, It also includes a controller, which is electrically connected to the first switch and is configured to: When the operator connects the charging gun to the charging interface structure, the first switch is closed and a current in the first direction is supplied to the first electromagnetic coil so that the magnetism of the first electromagnetic coil is opposite to the magnetism of the first magnetic component. When the operator pulls the charging gun out of the charging interface structure, the first switch is closed and a second-direction current is supplied to the first electromagnetic coil so that the magnetism of the first electromagnetic coil is the same as that of the first magnetic component, and the first direction is opposite to the second direction.

10. The charging system according to claim 9, characterized in that, It also includes a camera used to film the operator to obtain the operator's gender and height; The controller is also configured to: Obtain the operator's gender and height; If the operator is male and his / her height is greater than or equal to the preset height, then a current of the first current value is passed into the first electromagnetic coil. If the operator is male and his / her height is less than the preset height, then a current of the second current value is passed into the first electromagnetic coil. If the operator is female, a third current value is supplied to the first electromagnetic coil, the third current value being greater than the second current value, and the second current value being greater than the first current value.

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