Charging device

Abstract

The utility model provides a charging device which comprises a bottom plate arranged at the top end of an electric vehicle; the power receiving bar is fixed on the bottom plate and is electrically connected with a battery pack of the electric automobile; the horizontal adjusting unit is fixedly connected with the bottom plate so as to adjust the bottom plate to be in a horizontal state; and the charging bow is arranged at the top end of the charging pile and is in electric contact with the power receiving bar after descending so as to supply power to a battery pack of the electric vehicle. The bottom plate is rotated to be in a horizontal state through the horizontal adjusting unit, and then the power receiving bar is controlled to be in a horizontal state, so that good contact between the charging bow and the power receiving bar is achieved, and the charging bow charges an electric vehicle.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of electric vehicles, and relates to an electric vehicle charging technology, in particular to a charging device. BACKGROUND

[0002] The charging mode of large electric vehicles is usually to install a power receiving row on the roof of the vehicle, so that the power receiving row is in contact with the charging bow of the charging pile, thereby realizing high-power charging. The charging bow is located at the top of the charging pile, and the power receiving row has four polar plates. When charging is needed, the charging bow is lowered to be in conductive contact with each polar plate of the power receiving row, thereby realizing charging of the electric vehicle.

[0003] However, due to uneven ground or inclination of the vehicle itself, the four polar plates of the power receiving row are not in the same horizontal plane, and after the charging bow is lowered, the charging bow may not fit the power receiving row, resulting in poor contact between the charging bow and each polar plate of the power receiving row, thereby affecting the normal charging of the electric vehicle, and even causing an electrical safety accident.

[0004] Therefore, how to realize good conductive contact between the power receiving row and the charging bow is an urgent problem to be solved by those skilled in the art. SUMMARY

[0005] The purpose of the present application is to provide a charging device to solve the problem in the prior art that due to the inclination of the ground or the vehicle itself, the charging bow and each polar plate of the power receiving row are prone to poor contact, resulting in poor charging effect of the electric vehicle, and even causing an electrical safety accident.

[0006] In a first aspect, the present application provides a charging device, comprising:

[0007] a bottom plate arranged at the top end of the electric vehicle;

[0008] a power receiving row fixed on the bottom plate and electrically connected to the battery pack of the electric vehicle;

[0009] a horizontal adjustment unit fixedly connected to the bottom plate to adjust the bottom plate to be in a horizontal state;

[0010] a charging bow arranged at the top end of the charging pile and electrically contacted with the power receiving row after being lowered to supply power to the battery pack of the electric vehicle.

[0011] In the present application, the horizontal adjustment unit adjusts the bottom plate to be in a horizontal state, so that the power receiving row arranged on the bottom plate is in a horizontal state, to ensure good contact between the charging bow and the power receiving row, thereby assisting the safe performance of the electric vehicle charging process.

[0012] In an embodiment of the present application, the horizontal adjustment unit comprises:

[0013] A bottom plate rotating member is fixedly connected to the bottom plate,

[0014] An electric motor is connected to the bottom plate rotating member to drive the bottom plate rotating member to rotate.

[0015] In an embodiment of the present application, further comprising:

[0016] A processing unit U1 is connected to the horizontal adjustment unit to control the horizontal adjustment unit.

[0017] An inclination detection unit is arranged at the top end of the charging pile to obtain the inclination degree of the power receiving row, and is in communication connection with the processing unit U1.

[0018] In an embodiment of the present application, the processing unit U1 and the inclination detection unit are in wireless communication connection through a wireless communication mode, and / or the processing unit U1 and the distance measuring unit are in wired communication connection through a power carrier mode.

[0019] In an embodiment of the present application, the power receiving row includes four polar plates, each of which is fixed on the bottom plate and electrically connected to the battery pack of the electric vehicle.

[0020] The inclination detection unit is a distance measuring unit arranged at the top end of the charging pile, which respectively obtains the distance between each polar plate and the top end of the charging pile, and is in communication connection with the processing unit U1.

[0021] In an embodiment of the present application, the distance measuring unit includes a depth camera.

[0022] In an embodiment of the present application, the distance measuring unit further includes an image processing subunit U2 arranged on the charging pile, which is in communication connection with the depth camera and in communication connection with the processing unit U1.

[0023] In an embodiment of the present application, the depth camera is an Azure Kinect camera.

[0024] In an embodiment of the present application, the image processing subunit U2 is an RV1126 visual chip.

[0025] In an embodiment of the present application, the processing unit U1 is an LPC1778FBD144 control chip.

[0026] As described above, the application provides a charging device, by adjusting the bottom plate through the horizontal adjustment unit, so that the bottom plate is in a horizontal state, so that the power supply row arranged on the bottom plate is also in a horizontal state, avoiding poor contact between the charging bow and the power supply row due to the inclination of the power supply row, thereby ensuring the electrical connection between the charging bow and the power supply row, which is conducive to the normal charging process of the electric vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A power supply row structure schematic diagram in the prior art is shown.

[0028] Figure 2 A scene schematic diagram of the charging pile and the electric vehicle in the charging process is shown.

[0029] Figure 3 A structure schematic diagram of a charging device according to an embodiment of the application is shown.

[0030] Figure 4 A position schematic diagram of an inclination detection unit on a charging pile according to an embodiment of the application is shown.

[0031] Figure 5 A structure schematic diagram of a distance measuring unit according to an embodiment of the application is shown.

[0032] Figure 6 A connection structure schematic diagram of a processing unit U1 and a horizontal adjustment unit according to an embodiment of the application is shown.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 100: electric vehicle; 110: power supply row; 120: bottom plate; 130: horizontal adjustment unit; 140: electric vehicle communication controller; 200: charging pile; 210: charging bow; 220: inclination detection unit; 221: depth camera; 230: charging pile communication controller. DETAILED DESCRIPTION

[0035] The embodiments of the application are described below through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the application from the disclosure of the specification. The application can also be implemented or applied through other different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0036] It is to be noted that the drawings provided in the following embodiments only schematically illustrate the basic concepts of the present application, and only the components related to the present application are shown in the drawings, not drawn according to the number, shape and size of the components in actual implementation, and the shape, number and ratio of each component in actual implementation can be arbitrarily changed, and the component layout pattern can be more complex.

[0037] The following embodiments of the present application provide a charging device for realizing electrical connection between an electric vehicle and a charging pile, so that the charging pile charges the electric vehicle. In the prior art, the charging bow at the top of the charging pile is usually lowered to make the charging bow contact the power receiving row at the top of the electric vehicle, wherein the power receiving row has four polar plates, and the charging bow is in good contact with the four polar plates after being lowered, so as to realize charging of the electric vehicle through electrical connection between the charging bow and the power receiving row. However, due to uneven ground or inclination of the electric vehicle itself, the top of the electric vehicle is often not in a horizontal state, that is, the power receiving row is inclined, and the four polar plates are not in the same horizontal plane. When the charging bow is lowered, due to the height difference between the polar plates, the charging bow is difficult to be in good contact with the four polar plates, thereby causing the charging to be unable to proceed normally, and even causing safety hazards due to arc drawing. Based on this, the present application provides a charging device, which adjusts the bottom plate to be in a horizontal state through a horizontal adjustment unit, so that the power receiving row is in a horizontal state, that is, the four polar plates are in the same horizontal plane, so as to facilitate the charging bow to be attached to each polar plate after being lowered, thereby realizing good contact between the charging bow and each polar plate, and facilitating normal charging process of the electric vehicle.

[0038] The principle and implementation of the charging communication structure for the electric vehicle of the present embodiment will be described in detail below with reference to the drawings, so that those skilled in the art can understand the charging communication structure for the electric vehicle of the present embodiment without creative labor.

[0039] As shown in Figure 1 The power receiving row 110 of the electric vehicle 100 usually includes four polar plates, which are a positive polar plate, a negative polar plate, a CP (Control Pilot) polar plate and a PE (Protective Earthing) polar plate. Among them, the positive polar plate and the negative polar plate are used to form a path of charging current, the CP polar plate is used to realize communication between the charging pile and the electric vehicle during the charging process, and the PE polar plate is used to realize ground protection. When the electric vehicle 100 needs to be charged, the charging bow 210 contacts the four polar plates to realize electrical connection, thereby realizing charging of the electric vehicle.

[0040] Specifically, as shown in Figure 2As shown, the electric vehicle 100 is located directly below the charging pile 200. The charging pantograph 210 at the top of the charging pile 200 descends to contact the plates of the power receiving busbar 110, thereby charging the electric vehicle 100. Generally, the charging pantograph 210 descends in a horizontal position. To avoid poor contact caused by uneven ground or a certain tilt of the vehicle itself, this application provides a charging device to ensure good contact between the charging pantograph 210 and the plates of the power receiving busbar 110.

[0041] Specifically, such as Figure 3 As shown, the charging device provided in this application includes: a base plate 120, a power receiving bus 110, a leveling unit 130, a processing unit U1, and a charging pantograph 210. The base plate 120 is disposed at the top of the electric vehicle 100, and the power receiving bus 110 is fixed to the base plate 120. Specifically, the power receiving bus 110 includes four plates: a positive plate, a negative plate, a CP plate, and a PE plate, each plate being fixed to the base plate 120. The charging pantograph 210 is disposed at the top of the charging pile 200, and after descending, it contacts the plates of the power receiving bus 110 to supply power to the battery pack of the electric vehicle 100.

[0042] It should be noted that the base plate 120 is a movable flat plate structure mounted on top of the electric vehicle 100. Its internal electrical connection structure enables the power receiving bus 110 mounted on the base plate 120 to be electrically connected to the battery pack of the electric vehicle 100. Therefore, by adjusting the position of the base plate 120, the position of the power receiving bus 110 can be adjusted, thereby ensuring that the power receiving bus 110 is in a horizontal position, thus facilitating good contact between the power receiving bus 110 and the charging pantograph 210.

[0043] Furthermore, to prevent uneven ground or the tilt of the electric vehicle 100 itself from causing the charging port 110 to tilt, thereby affecting the normal charging of the electric vehicle 100, the charging device provided in this application also includes a leveling unit 130 for adjusting the position of the charging port 110. Specifically, the leveling unit 130 is fixedly connected to the base plate 120. By rotating the base plate 120, it compensates for the tilt caused by external factors, thereby adjusting the base plate 120 to a horizontal state, so that the charging port 110 on the base plate 120 is in a horizontal state, that is, each electrode plate of the charging port 110 is on the same horizontal plane, so that the charging pantograph 210 can make good contact with each electrode plate after descending, which is conducive to the normal charging process of the electric vehicle 100.

[0044] Exemplarily, the horizontal adjusting unit 130 comprises a motor and a bottom plate rotating member connected with the motor. The bottom plate rotating member is fixedly connected with the bottom plate 120, and the bottom plate 120 is driven to rotate by the motor driving the bottom plate rotating member, so that the bottom plate 120 is driven to rotate from the inclined state to the horizontal state, and the power receiving row 110 on the bottom plate 120 is also driven to the horizontal state, so as to realize the adjustment of the power receiving row 110. Specifically, the bottom plate rotating member can be a rotating shaft fixedly connected with the motor, and the rotating shaft is driven to rotate by the motor.

[0045] Of course, the horizontal adjusting unit 130 can also be other structures, such as coaxial gear transmission structure or chain transmission structure, etc., as long as it can drive the bottom plate 120 to rotate, which is not limited in the embodiment.

[0046] In order to further ensure that the power receiving row 110 is in the horizontal state after adjustment, that is, to determine the angle of the bottom plate 120 driven to rotate by the horizontal adjusting unit 130, it is necessary to obtain the inclination degree of the bottom plate 120, so as to accurately control the position state of the power receiving row 110. Based on this, in some optional embodiments, as shown in Figure 4 The charging structure used in the embodiment also comprises an inclination detection unit 220 for obtaining the inclination degree of the bottom plate 120, that is, the inclination degree of the power receiving row 110. Specifically, the inclination detection unit 220 is arranged at the top end of the charging pile 200. When the electric vehicle 100 needs to be charged, the electric vehicle 100 drives to the position directly below the charging pile 200 to wait for charging, and the inclination detection unit 220 at the top end of the charging pile 200 obtains the inclination degree of the power receiving row 110 directly below the charging pile 200, so that the horizontal adjusting unit 130 accurately adjusts based on the inclination degree of the power receiving row 110, so that the adjusted power receiving row 110 is in the horizontal state.

[0047] In some optional embodiments, the inclination detection unit 220 is a distance measuring unit, which obtains the inclination degree of the power receiving row 110 by detecting the distance between each pole plate of the power receiving row 110 and the top end of the charging pile 200. Specifically, based on the distance between each pole plate of the power receiving row 110 and the top end of the charging pile 200, the inclination direction and inclination angle of the power receiving row 110, that is, the inclination degree of the power receiving row 110, are obtained by using geometric principles. It should be noted that those skilled in the art should know the specific method steps of obtaining the inclination direction and inclination angle of the power receiving row 110 based on the distance between each pole plate and the top end of the charging pile 200, which is not described in detail in the embodiment.

[0048] Exemplarily, the distance measuring unit comprises a depth camera 221. The depth camera 221 is arranged at the top end of the charging pile 200 and photographs downwards to obtain a depth image of the power receiving row 110. The depth information of each position on the image can be obtained through the depth camera 221, so as to obtain the depth of each polar plate of the power receiving row 110 on the image, that is, the distance between each polar plate of the power receiving row 110 and the top end of the charging pile 200, and further obtain the inclination degree of the power receiving row 110. Of course, the distance between each polar plate of the power receiving row 110 and the top end of the charging pile 200 can also be obtained in other ways. For example, the inclination detection unit 220 comprises a laser range finder or an ultrasonic range finder, and the distance is measured by the time from the emission of a laser signal or an ultrasonic signal to the reception of a reflected signal. The present embodiment does not make specific limitations here.

[0049] Exemplarily, the depth camera 221 in the distance measuring unit is an Azure Kinect camera based on time-of-flight technology. An infrared light source emits an infrared light pulse, the flight time of the light signal from the camera to the reflection of the object is measured, and the flight time is converted into a distance value, so as to obtain a depth image. Each pixel point on the obtained depth image represents the distance between the corresponding object and the depth camera 221, and further obtains the distance between each polar plate of the power receiving row 110 and the top end of the charging pile 200.

[0050] It should be noted that the depth information of each position on the image obtained by the depth camera 221 has low accuracy. In order to accurately control the rotation of the bottom plate 120 to the horizontal state, in some optional embodiments, as shown in Figure 5 The distance measuring unit further comprises an image processing subunit U2 for obtaining the accurate distance between each polar plate of the power receiving row 110 and the top end of the charging pile 200 based on the depth image photographed by the depth camera 221. Specifically, the image processing subunit U2 is arranged on the charging pile 200 and is in communication connection with the depth camera 221, so as to obtain the image data of the depth camera 221 for analysis and processing.

[0051] Exemplarily, as shown in Figure 5 The image processing subunit U2 is an RV1126 vision chip of Swirco, which processes the image data based on a four-core processor. The depth camera 221 is electrically connected with the RV1126 vision chip, so as to realize the communication connection between the depth camera 221 and the image processing subunit U2, so that the image processing subunit U2 obtains the image data of the depth camera 221 for analysis and processing.

[0052] It should be noted that in order to improve the efficiency and convenience of the charging process of the electric vehicle 100, the charging device provided in the embodiment further comprises a processing unit U1 for controlling the horizontal adjusting unit 130, thereby controlling the power receiving row 110 to rotate to a horizontal state, realizing the automatic adjustment of the position state of the power receiving row 110, without the need for the driver to operate, easy to operate, convenient and fast, and the horizontal degree of the power receiving row 110 is better.

[0053] As shown in Figure 6 , the processing unit U1 is an LPC1778FBD144 control chip of NXP Company, which is connected with the horizontal adjusting unit 130 through PWM output, so as to control the position state of the bottom plate 120 through the horizontal adjusting unit 130, and then control the position state of the power receiving row 110, so as to automatically control the position state of the power receiving row 110 to be horizontal, effectively improving the efficiency and convenience of the charging process of the electric vehicle 100.

[0054] Specifically, the horizontal adjusting unit 130 comprises a bottom plate rotating part and a motor, so as to rotate the bottom plate rotating part through the motor, thereby driving the bottom plate 120 to rotate to a horizontal state, wherein the rotation of the motor is controlled by the processing unit U1, that is, the processing unit U1 is connected with the motor, so as to realize the accurate control of the rotation angle of the bottom plate 120 by the processing unit U1. As shown in Figure 6 , the processing unit U1 is an LPC1778FBD144 control chip, which controls the motor through PWM output.

[0055] It should be noted that the horizontal adjusting unit 130 needs to be based on the inclination degree of the power receiving row obtained by the inclination detection unit 220, so as to accurately control the rotation angle of the bottom plate 120, thereby realizing the accurate control of the position state of the power receiving row 110. Based on this, the processing unit U1 is in communication connection with the inclination detection unit 220, so that the processing unit U1 accurately controls the rotation angle of the bottom plate 120 by the horizontal adjusting unit 130 based on the communication data from the inclination detection unit 220, that is, the inclination degree of the power receiving row, so as to realize the control of the position state of the power receiving row 110.

[0056] Among them, the processing unit U1 and the inclination detection unit 220 are in wireless communication connection through wireless communication mode, or the processing unit U1 and the inclination detection unit 220 are in wired communication connection through power carrier mode, of course, the processing unit U1 and the inclination detection unit 220 can also carry out wired communication and wireless communication at the same time, specifically, the person skilled in the art can design based on the actual application requirement, the embodiment does not make specific limitation here.

[0057] Further, the image processing subunit U2 is in communication connection with the processing unit U1. The image processing subunit U2 acquires the depth image captured by the depth camera 221 for analysis and processing to obtain the inclination degree of the power receiving row 110, and sends the inclination degree of the power receiving row 110 to the processing unit U1, so that the processing unit U1 controls the horizontal adjustment unit 130 to adjust the bottom plate 120 based on the inclination degree of the power receiving row 110, thereby realizing the adjustment of the power receiving row 110. Wherein, the processing unit U1 and the image processing subunit U2 are in wireless communication connection through wireless communication mode, and / or the processing unit U1 and the image processing subunit U2 are in wired communication connection through power carrier mode.

[0058] It should be noted that the processing unit U1 and the image processing subunit U2 are in communication through the communication channel between the electric vehicle 100 and the charging pile 200. Specifically, since the electric vehicle 100 needs to transmit charging data with the charging pile 200 during the charging process to control the charging process, a communication channel for communication needs to be built between the electric vehicle 100 and the charging pile 200. Wherein, as shown in Figures 5-6 the charging pile 200 includes a charging pile communication controller 230, and the electric vehicle 100 includes an electric vehicle communication controller 140, that is, by building a communication channel between the charging pile communication controller 230 and the electric vehicle communication controller 140, the communication connection between the charging pile 200 and the electric vehicle 100 is realized. Further, the image processing subunit U2 is in communication connection with the charging pile communication controller 230, and the processing unit U1 is in communication connection with the electric vehicle communication controller 140, so as to realize the data transmission between the processing unit U1 and the image processing subunit U2 based on the communication channel between the charging pile communication controller 230 and the electric vehicle communication controller 140, that is, to make the processing unit U1 receive the inclination degree of the power receiving row 110 from the image processing subunit U2, so as to control the horizontal adjustment unit 130 to adjust the bottom plate 120.

[0059] Wherein, the communication channel between the charging pile communication controller 230 and the electric vehicle communication controller 140 can be built through wireless communication mode or power carrier mode, specifically, those skilled in the art can design based on actual application requirements, which is not limited in this embodiment.

[0060] It should be noted that since the processing unit U1 generally transmits data through bus mode, based on this, Figure 6As shown, the processing unit U1 and the electric vehicle communication controller 140 are connected through a data transmission unit U3. The data transmission unit U3 transmits data from the electric vehicle communication controller 140 to the processing unit U1 in a bus mode, thereby realizing the communication connection between the processing unit U1 and the electric vehicle communication controller 140.

[0061] In summary, the charging structure for the electric vehicle provided by the present application adjusts the position state of the bottom plate 120 through the horizontal adjustment unit 130, and then adjusts the position state of the power receiving rail 110, so that the power receiving rail 110 is in a horizontal state, so as to facilitate the charging bow 210 to be attached to the power receiving rail 110 after descending, so as to avoid that the charging bow 210 and the power receiving rail 110 cannot be in contact and even cause an electrical safety accident due to poor contact, and is beneficial to guarantee the safety of the charging process of the electric vehicle 100.

[0062] The description of the corresponding flow or structure of each of the above-mentioned drawings has its own emphasis, and the part not described in detail in a certain flow or structure can refer to the related description of other flows or structures.

[0063] The above-mentioned embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the present application should be covered by the claims of the present application.

Claims

1. A charging device, characterized in that, include: The base plate is installed on top of the electric vehicle; The power supply is fixed on the base plate and electrically connected to the battery pack of the electric vehicle; A horizontal adjustment unit is fixedly connected to the base plate to adjust the base plate to a horizontal state; The horizontal adjustment unit includes: a base plate rotating component, which is fixedly connected to the base plate; and a motor connected to the base plate rotating component to drive the base plate rotating component to rotate. A pantograph, mounted on top of a charging station, descends and contacts the power receiving outlet to supply power to the battery pack of the electric vehicle.

2. The charging device according to claim 1, characterized in that, Also includes: Processing unit U1 is connected to the leveling unit to control the leveling unit; A tilt detection unit is installed at the top of the charging pile to obtain the tilt degree of the power receiving busbar and is communicatively connected to the processing unit U1.

3. The charging device according to claim 2, characterized in that, The processing unit U1 and the tilt detection unit are wirelessly connected via wireless communication, and / or the processing unit U1 and the tilt detection unit are wired connected via power line carrier communication.

4. The charging device according to claim 2, characterized in that, The power receiving bus includes four electrode plates, each of which is fixed on the base plate and electrically connected to the battery pack of the electric vehicle. The tilt detection unit is a ranging unit, which is set at the top of the charging pile. The ranging unit obtains the distance between each of the electrode plates and the top of the charging pile, and is communicatively connected to the processing unit U1.

5. The charging device according to claim 4, characterized in that, The ranging unit includes a depth camera.

6. The charging device according to claim 5, characterized in that, The ranging unit also includes an image processing subunit U2, which is mounted on the charging pile and is communicatively connected to the depth camera and the processing unit U1.

7. The charging device according to claim 5, characterized in that, The depth camera is an Azure Kinect camera.

8. The charging device according to claim 6, characterized in that, The image processing subunit U2 is an RV1126 vision chip.

9. The charging device according to claim 2, characterized in that, The processing unit U1 is an LPC1778FBD144 control chip.

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