阅读说明：本技术 一种基于无线电能传输技术的电单车充电装置 (Electric bicycle charging device based on wireless power transmission technology ) 是由 陈海川 龙立 杨佳星 周聪 宋英子 刘淼 王子扬 赖翔 于 2021-01-15 设计创作，主要内容包括：本发明公开了一种基于无线电能传输技术的电单车充电装置,其特征在于,包括地下电能发射器,所述地下电能发射器包括地下电源电路、地下谐振电路、地下发射线圈阵列、地下电流检测器、地下开关控制器；所述充电装置还包括地面充电设备,所述地面充电设备包括地面接收线圈、电单车电池、地面电压检测器、地面开关控制器；所述地下电能发射器与地面充电设备无直接电气连接；所述地下发射线圈阵列与地面接收线圈阵列通过磁耦合连接。本充电装置设计结构合理、功能有效,提高了电单车充电的便利性。(The invention discloses an electric bicycle charging device based on a wireless electric energy transmission technology, which is characterized by comprising an underground electric energy transmitter, wherein the underground electric energy transmitter comprises an underground power circuit, an underground resonant circuit, an underground transmitting coil array, an underground current detector and an underground opening controller; the charging device also comprises ground charging equipment, wherein the ground charging equipment comprises a ground receiving coil, an electric bicycle battery, a ground voltage detector and a ground switch controller; the underground electric energy transmitter is not directly electrically connected with ground charging equipment; the underground transmitting coil array is connected with the ground receiving coil array through magnetic coupling. This charging device project organization is reasonable, the function is effective, has improved the convenience that the electric bicycle charges.)

1. The electric bicycle charging device based on the wireless power transmission technology is characterized by comprising an underground power transmitter, wherein the underground power transmitter comprises an underground power circuit, an underground resonant circuit, an underground transmitting coil array, an underground current detector and an underground opening controller; the charging device also comprises ground charging equipment, wherein the ground charging equipment comprises a ground receiving coil, an electric bicycle battery, a ground voltage detector and a ground switch controller; the underground electric energy transmitter is not directly electrically connected with the ground charging equipment.

2. The charging apparatus of claim 1, wherein the underground power circuit comprises an underground power access, underground power inverter.

3. The charging device of claim 1, wherein the underground resonant circuit comprises an inverter circuit and a resonant capacitor.

4. The charging apparatus of claim 1, wherein the underground transmit coil array comprises a plurality of sub-coils forming a plurality of transmission concentration points.

5. The charging apparatus of claim 1, wherein the underground current detector is connected at the resonant circuit and to an underground controller.

6. The charging device of claim 1, wherein the ground receiving coil, the electric bicycle battery, the ground voltage detector, and the ground switch controller are connected in sequence and return to the ground receiving coil.

Technical Field

The invention belongs to the technical field of wireless power transmission, and particularly relates to an electric bicycle charging device based on a wireless power transmission technology.

Background

The green and environment-friendly traveling is an important purpose for protecting the environment, and in order to respond to government calls, many enterprises push the traveling mode of sharing the electric bicycle, so that many riders can be seen in the streets and the alleys of the city. However, the problem of battery endurance of the electric bicycle still cannot be solved, for example, in hot summer and cold winter, battery replacement still means that a worker reaches the parking position of the electric bicycle to replace the battery, so that time and labor are consumed, and therefore, the problem of battery endurance of the electric bicycle is important work for guaranteeing convenient traveling of citizens.

Disclosure of Invention

The invention provides an electric bicycle charging device based on a wireless power transmission technology, which aims to solve the problem of battery endurance of an electric bicycle and the complicated battery replacement work.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electric bicycle charging device based on a wireless power transmission technology comprises an underground electric energy transmitter, wherein the underground electric energy transmitter comprises an underground power supply circuit, an underground resonant circuit, an underground transmitting coil array, an underground current detector and an underground opening controller; the charging device also comprises ground charging equipment, wherein the ground charging equipment comprises a ground receiving coil, an electric bicycle battery, a ground voltage detector and a ground switch controller; the underground electric energy transmitter is not directly electrically connected with the ground charging equipment.

As a further description of the above technical solution: the underground power circuit comprises an underground power access and an underground power inverter.

As a further description of the above technical solution: the underground resonant circuit comprises an inverter circuit and a resonant capacitor.

As a further description of the above technical solution: the underground transmit coil array includes a plurality of sub-coils forming a plurality of transmission concentration points.

As a further description of the above technical solution: the underground current detector is connected at the resonant circuit and is connected to an underground controller.

As a further description of the above technical solution: the ground receiving coil, the electric bicycle battery, the ground voltage detector and the ground switch controller are sequentially connected and return to the ground receiving coil.

The invention has the following beneficial effects:

the electric bicycle charging device based on the wireless power transmission technology is reasonable in design structure and effective in function, and improves the convenience of electric bicycle charging. The wireless power transmission technology is utilized to charge the electric bicycle, so that the higher charging efficiency is ensured, and the charging safety is improved; meanwhile, for a general wireless charging system, the charging system utilizes the change of a load end to cause the change of current of a transmitting end, so that the load quantity is sensed, the wireless communication is avoided, and the cost and the power consumption of the device are reduced; the electric bicycle is charged by utilizing the wireless power transmission technology, so that manpower and material resources are saved, the electric quantity of the electric bicycle can be ensured to be sufficient, and the convenience of citizens in traveling is improved. The invention has simple structure, low cost, safety, high efficiency, convenience and reliability, and is expected to provide support for the charging work of related electric automobiles.

Drawings

Fig. 1 is a schematic diagram of an electric bicycle charging device based on a wireless power transmission technology according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides an embodiment: the underground power transmitter is internally provided with an underground power circuit, an underground resonant circuit, an underground transmitting coil array, an underground current detector and an underground opening controller, wherein the underground power circuit, the underground resonant circuit and the underground transmitting coil array are sequentially connected; the underground current detector is connected out of the underground resonant circuit, and the underground resonant circuit, the underground current detector, the underground opening controller and the underground power supply circuit are sequentially connected; the ground charging equipment comprises a ground receiving coil, an electric bicycle battery, a ground voltage detector and a ground switch controller, wherein the ground receiving coil comprises a receiving coil, a receiving coil resonant circuit and a rectifying circuit; the ground receiving coil, the electric bicycle battery, the ground voltage monitor and the ground switch controller are connected in sequence.

In the embodiment, the underground resonant circuit comprises a full-bridge inverter circuit and a series resonant circuit; the full-bridge inverter circuit inverts the direct-current power supply into alternating current required by the system; the series resonant circuit forms series resonance when alternating current is supplied.

In this embodiment, the underground transmitting coil array is formed by arranging a plurality of sub-coils, each sub-coil is supplied with alternating current, the alternating current generates a changing alternating magnetic field through the coil, and the changing magnetic field induces a potential through a receiving coil arranged on the ground charging equipment to charge the ground charging equipment.

In this embodiment, each sub-coil in the underground transmitting coil array is in a planar disc shape, and since the transmitting coil is in an array structure, the planar disc-shaped coil is more advantageous than a spiral coil in order to reduce mutual inductance between adjacent sub-coils, and a ground receiving coil on the ground charging device is also in a planar disc shape, so that the power transmission effect is better.

In this embodiment, the current detector comprises a current sensor and a single chip microcomputer, the direct current at the front end of the inverter circuit collected by the current sensor is transmitted to the STM8L101 single chip microcomputer, the single chip microcomputer obtains a digital signal through AD conversion, and a driving signal is output to the underground controller after internal processing.

In this embodiment, the single-chip microcomputer in the current detector and the ground switch controller is an STM8L101 single-chip microcomputer produced by seiko semiconductor corporation, and the single-chip microcomputer is a 20-pin 8-bit CMOS flash memory single-chip microcomputer. In implementation, STM8L101 singlechip all adopts TSSOP20 encapsulation to realize the miniaturization of encapsulation. The STM8L101 singlechip adopts 1.65-3.6V power supply in the work, uses the output voltage conversion of low-dropout regulator with the battery for the 8 pin VDD of 3.3V access singlechip. The 4-pin of the single chip microcomputer is a reset end and is used for resetting and returning to zero after data is sent. The rest pins except PB0 and PB4 are I/O ports of the single chip microcomputer and are used for AD conversion, control instruction input to the relay and other functions. The low dropout regulator selects an RT9193 low dropout regulator, and the output voltage is adjustable between 1.5V and 5.0V.

In this embodiment, underground electric energy transmitter is wrapped up by waterproof casing, and PVC or PMMA material can be chooseed for use to the material of waterproof casing, and the shape of waterproof casing is the sphere so that better pressure-bearing. And an opening is formed on the surface of the waterproof shell so as to supply power to the underground power supply. And sealing the waterproof shell with a gap by using waterproof sealant to ensure the waterproofness of the underground device. The PCB is horizontally placed in the center of the spherical shell in the horizontal diameter direction and is fixed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.