Wireless charging receiving device and electric bicycle

Abstract

The utility model discloses a wireless charging receiving device, which comprises a coil part and a control part connected with the coil part through a coil lead. The coil part comprises a coil shell and a coil bottom plate arranged in the coil shell, and a receiving end coil and a positioning system are arranged on the coil bottom plate; and the control part comprises a control end shell, and a voltage adjusting part, a vehicle identification part and a mobile communication part which are arranged in the control end shell. The utility model also discloses an electric bicycle adopting the wireless charging receiving device. The wireless charging receiving device and the electric vehicle have the advantages of being safe, reliable, complete in function and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging, in particular to a wireless charging receiving device and an electric bicycle. Background Art

[0002] Electric bicycles are a commonly used means of public transportation. They retain the pedal design of traditional bicycles and add an electric auxiliary system on this basis. The battery provides electrical energy to the motor, and the motor converts the electrical energy into mechanical energy to drive the vehicle forward. The use of wireless charging technology in electric bicycles is one of the important trends in the future development of electric transportation. It has many benefits and can improve the convenience, safety, aesthetics and environmental protection of charging. However, the current use of wireless charging technology in electric bicycles still faces some problems, such as energy conversion efficiency, charging speed and charging distance, electromagnetic field radiation concerns, and equipment compatibility and standardization. The wireless charging system of electric bicycles usually includes a fixed pile-type transmitting device and a receiving device installed on the electric bicycle. The existing wireless charging receiving devices for electric bicycles mainly have the following problems:

[0003] 1) Safety and reliability: The safety margin of the receiving device is insufficient, and the safety performance is reduced in extreme cases.

[0004] 2) The problem of positioning the transmitting coil and the receiving coil. Some coil positioning methods in the prior art are too mechanical, and some positioning deviations are too large, resulting in low charging efficiency.

[0005] 3) Voltage matching problem. The current mainstream charging voltages for electric bicycles are 56V, 70V and 84V. Failure to flexibly adjust the voltage will result in slow charging speed.

[0006] These problems in the receiving devices of wireless charging electric bicycles restrict the large-scale development of wireless charging of electric bicycles. Utility Model Content

[0007] In order to improve the receiving device of wireless charging reception of electric bicycles, the utility model sets a separate coil part and a control part to optimize the coil positioning function. The first purpose of the utility model discloses a wireless charging receiving device, including a wireless charging receiving device, including a coil part, and a control part connected to the coil through a coil wire; the coil part includes a coil housing, and a coil bottom plate arranged inside the coil, and a receiving end coil and a positioning system are arranged on the coil bottom plate; the control part includes a control end housing, and a voltage adjustment part, a vehicle identification part, and a mobile communication part arranged therein.

[0008] Preferably, the positioning system is arranged in the middle of the coil part, and includes a position sensor, and / or a visible light generator.

[0009] Preferably, the position sensor is an electromagnetic sensor or an optical sensor.

[0010] Preferably, the output voltage of the voltage regulating unit is adjustable from 36 to 92V.

[0011] Preferably, the vehicle identification unit includes a QR code, and / or a serial number (SN), and / or an MSISDN (MobileStation International Subscriber Directory Number).

[0012] Preferably, the mobile communication unit adopts 4G or 5G or Internet of Things communication technology.

[0013] Preferably, the control unit also includes a detection module for detecting charging current and voltage

[0014] Preferably, the control unit further includes indicator lights, which include an alignment indicator light, a charging indicator light and a fault indicator light.

[0015] The second objective of the utility model is to disclose an electric bicycle, comprising the above-mentioned wireless charging receiving device.

[0016] Preferably, the coil portion of the electric bicycle is arranged below the pedal of the electric bicycle, and the control portion of the electric bicycle is arranged near the battery of the electric bicycle and is connected to the battery.

[0017] Beneficial technical effects of the utility model:

[0018] 1) The coil part and control part of the receiving device are separated, which is convenient for installation and modification. The coil part is close to the ground for easy charging, and the control part is kept at a certain distance from the coil part to improve safety.

[0019] 2) A coil positioning unit is provided to guide the alignment of the coil of the receiving device with the transmitting device.

[0020] 3) A voltage regulator is provided to meet the charging voltage requirements of different electric bicycles.

[0021] 4) Wireless charging receiving device, easy to install and upgrade, suitable for various models of electric vehicles.

[0022] The utility model provides a wireless charging receiving device and an electric bicycle, which are safe, reliable, fully functional and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of a wireless charging receiving device according to an embodiment of the utility model;

[0024] Figure 2This is a three-dimensional diagram of a control unit of a wireless charging receiving device according to an embodiment of the utility model;

[0025] Figure 3 This is a front view of a wireless charging receiving device according to an embodiment of the utility model;

[0026] Figure 4 An electric bicycle equipped with a wireless charging receiving device according to an embodiment of the utility model.

[0027] Explanation of the reference numerals: 1-coil housing; 2-coil bottom plate; 3-receiving end coil; 4-coil wire; 5-upper housing; 6-lower housing; 7-mobile communication unit; 8-charging power cord; 11-coil unit; 12-control unit. DETAILED DESCRIPTION

[0028] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0029] Embodiment 1

[0030] The present utility model provides a wireless charging receiving device, such as Figure 1 and Figure 3 As shown, it includes a coil part and a control part, which are connected by a coil wire 4. The length of the coil wire 4 can be set to about 1 meter. Separating the coil part from the control part has the following advantages:

[0031] 1) Improved safety. Usually, the wireless charging transmitter is fixed on the ground, and the coil part of the receiving device needs to be as close to the transmitter as possible. The coil part of the receiving device can be set at a position close to the ground of the electric bicycle, preferably under the pedal. The control part of the separately set receiving device can keep a certain distance from the coil part. For example, the control part is installed on the upper part of the electric bicycle. In this way, when the electric bicycle passes through a flooded area, the control part is prevented from getting water, thereby improving the safety and reliability of the device.

[0032] 2) Easy installation or modification. By separating the coil part from the control part, the coil part can be designed to be smaller and thinner, so that there are more options for installation on the electric bicycle. When the existing electric bicycle is modified for wireless charging, it is also more convenient to implement modification and update because the coil part is small in size and thin in thickness.

[0033] The coil part of the wireless charging receiving device can be designed to be a thin pancake, including a receiving end coil 3, a coil bottom plate 2, a coil housing 1 and a positioning system. The coil housing 1 is waterproof, with a dust and water resistance rating of IP68, which can be immersed in water within a depth of 1.5 meters for 30 minutes. Inside the coil housing 1, the receiving end coil 3 is fixed on the coil bottom plate 2.

[0034] The positioning system can be set in the middle of the receiving end coil 3 to detect the relative position between the transmitting end and the receiving end, and to align the transmitting end coil with the receiving end coil 3, which is very important for efficient and safe charging. Since wireless charging relies on electromagnetic fields for energy transmission, the energy transmission efficiency can only be maximized when the transmitting end and the receiving end are correctly aligned.

[0035] The positioning system can use position sensors, such as electromagnetic sensors or optical sensors, to cooperate with the transmitter on the ground to locate the coil. Electromagnetic sensors can be used to detect the strength and direction of the electromagnetic field to help the system determine the relative position between the transmitter and the receiver, and adjust the alignment accordingly. Optical sensors can also be used to detect the relative position between the transmitter and the receiver using infrared light, and determine the alignment status based on the change in the signal.

[0036] The positioning system can also use visible light to assist in positioning, for example, by emitting a vertical thin light beam from the middle position close to the receiving end coil 3 and illuminating the ground, so that the parking personnel can know the alignment of the coils at both ends.

[0037] In order to facilitate the use of electric bicycle users, a certain margin is also set for the alignment of the coils at both ends. For example, when the radial displacement of the axis of the coils at both ends is less than 3 cm, the coil alignment is considered to be completed.

[0038] One end of the control unit of the wireless charging receiving device is connected to the coil unit through the coil wire 4, and the other end is connected to the battery of the electric bicycle through the charging power line 8. Figure 2 As shown, the control unit includes a control shell, a voltage adjustment unit, a vehicle identification unit, a mobile communication unit 7, a detection module and an indicator light, and the control shell includes an upper shell 5 and a lower shell 6.

[0039] The voltage adjustment unit is used to set the charging voltage of the battery. Common charging voltages are 56V, 70V and 84V. The embodiment of the utility model supports adjustable voltages of 36 to 92V, which can be applied to various scenarios. For the convenience of users, the voltage adjustment function can also be disabled. For example, three different models of receiving devices are produced, supporting 56V, 70V and 84V respectively.

[0040] The vehicle identification unit is used to set and store the unique identification number (UID) of the wireless charging electric bicycle. The unique identification number can be realized by a QR code or a serial number (SN), or by an MSISDN (Mobile Station International Subscriber Directory Number). The unique identification number can be used for billing, statistics and other functions, and the external devices that realize these functions are not within the scope of protection of this utility model.

[0041] The mobile communication unit 7 is used for information transmission with external devices. The mobile communication unit 7 can use 4G, 5G or Internet of Things communication technologies to communicate with external energy storage distribution cabinets or mobile phones. It should be noted that the device of the utility model needs external devices to cooperate in order to implement the above-mentioned system interaction process, but the external devices are not within the scope of protection of the utility model.

[0042] The detection module can detect the battery current, voltage and battery life during the charging process, and can also transmit this information to the external system through the mobile communication unit 7, which can effectively prevent the unsafe battery from continuing to charge and further reduce accidents. For example, when overvoltage occurs during the charging process, the detection module will notify the external system and stop charging, effectively preventing the battery from heating up during the charging process, causing combustion, explosion and other accidents.

[0043] Indicator lights can be set on the control unit. An alignment indicator light is set to indicate that the coils at both ends are aligned, a charging indicator light is set to indicate that charging is in progress or has been fully charged, and a fault indicator light is set to indicate a charging fault.

[0044] Embodiment 2

[0045] The utility model provides an electric bicycle, such as Figure 4 As shown, the aforementioned wireless charging receiving device is installed on the vehicle. Preferably, the coil portion 11 of the receiving device is attached to the bottom of the vehicle and can be installed under the pedal, and the control portion 12 of the receiving device can be installed on the battery accessory of the electric bicycle and directly connected to the battery. It can also be installed in a higher position, such as under the seat or on top of the battery. After installing this wireless charging receiving device, the electric bicycle can be wirelessly charged through an installed external wireless fixed charging pile.

[0046] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A wireless charging receiving device, characterized in that: The invention comprises a coil part and a control part connected to the coil part via a coil wire (4); the coil part comprises a coil housing (1) and a coil bottom plate (2) arranged therein, and a receiving end coil (3) and a positioning system are arranged on the coil bottom plate (2); the control part comprises a control end housing, and a voltage adjustment part, a vehicle identification part, and a mobile communication part (7) arranged therein.

2. A wireless charging receiving device according to claim 1, characterized in that: The positioning system is arranged in the middle of the coil part, and comprises a position sensor and / or a visible light generator.

3. A wireless charging receiving device according to claim 2, characterized in that: The position sensor is an electromagnetic sensor or an optical sensor.

4. The wireless charging receiving device according to claim 1, characterized in that: The output voltage of the voltage regulating unit is adjustable from 36V to 92V.

5. The wireless charging receiving device according to claim 1, characterized in that: The vehicle identification part includes a QR code, and / or a serial number, and / or a mobile station international user number.

6. A wireless charging receiving device according to claim 1, characterized in that: The mobile communication unit (7) adopts 4G or 5G or Internet of Things communication technology.

7. A wireless charging receiving device according to claim 1, characterized in that: The control unit also includes a detection module for detecting charging current and voltage.

8. A wireless charging receiving device according to any one of claims 1 to 7, characterized in that: The control unit further includes indicator lights, which include an alignment indicator light, a charging indicator light, and a fault indicator light.

9. A wireless charging electric bicycle, characterized in that: It comprises a wireless charging receiving device according to any one of claims 1-8.

10. A wireless charging electric bicycle according to claim 9, characterized in that: The coil part is arranged below the pedal of the electric bicycle, and the control part is arranged near the battery of the electric bicycle and is connected to the battery.

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