TWI678046B - Wireless charging device of fuel cell - Google Patents

Abstract

The invention relates to a fuel cell wireless charging device, which includes a fuel cell power module; a transmission module having a boost converter electrically connected to the fuel cell power module and an electrically connected boost converter A DC-AC converter of the device; a transmission coil group, which is a DC-AC converter electrically connected to the transmission module; a receiving coil group, which is electrically connected to the transmission coil group; and a receiving module, which has a power The rectifier that is connected to the receiving coil group and a voltage regulator that is electrically connected to the rectifier; thereby, the present invention can transmit voltage and current to the receiving coil group through the transmitting coil group to provide a load for charging.

Description

Wireless charging device for fuel cell

The invention relates to a wireless charging device, in particular to a wireless charging device using a fuel cell. The wireless charging device uses a coil transmission technology to achieve the purpose of wireless charging, making it more convenient for the user to use, and more environmentally friendly. More friendly.

According to modern technology, every day, almost everyone has a mobile device, such as a smart phone or a tablet. Most of the power source of such mobile devices is provided by lithium batteries or lithium polymer batteries. Receiving and transmitting messages results in considerable power consumption. When the mobile device is out of power, the user needs to use the mobile power source to charge the mobile device for continuous use. The current mobile power source is usually wired. The connection method is mainly used. Therefore, when using a mobile power source, the user must also prepare a charging cable to charge, which is inconvenient.

Republic of China Patent Bulletin No. TW M556964 "Wireless Charging Mobile Power Supply with Composite Induction Coil" includes a wireless receiving module, a wireless transmitting module, a battery management module, a charging circuit, a gravity sensor, and an induction coil And other components, the induction coil is located above a battery, including a receiving end and a transmitting end. When the mobile device is placed on a wireless charging mobile power source, the battery will discharge when the weight sensor senses the weight, and will pass through the induction The transmitting end of the coil charges the mobile device; in addition, the Republic of China Patent Bulletin No. TW M563696 "Inductive Wireless Charging Mobile Power" contains a microprocessor, a gravity sensor, a wireless charging board (TX) / wireless charging device (RX) combination module, a pulse width modulation (PWM) driver, a power block and an induction coil And other components, when the mobile device is placed on the inductive wireless charging mobile power source, when the gravity sensor senses the weight, the microprocessor sends a switching signal to the TX / RX combination module, so that the TX / RX combination module is converted into In the transmission mode, the power block draws out the power in the battery and wirelessly outputs the mobile device via the induction coil.

According to the patents in the previous case, the current mobile power supply already has wireless charging technology, which can increase the convenience of use; however, the mobile power supply itself also needs to be charged to provide sufficient power for mobile devices. Generally, mobile power supplies are powered by city power or Other external power sources are used for charging. At present, the production of commercial power is still mainly based on petrochemical fuels and nuclear energy, which will cause considerable pollution to the environment. Therefore, how to provide a mobile power source that is convenient for users and can be charged with a cleaner fuel to protect the environment and reduce pollution has become a direction that the inventors thought about.

Today, the inventor is in view of the fact that the above existing charging devices still have many missing points when they are actually used. Therefore, they are a tireless spirit, supplemented by their rich professional knowledge and years of practical experience. Based on this, the present invention was developed.

The main purpose of the present invention is to provide a wireless charging device for a fuel cell. The technology of wireless coil transmission enables the rechargeable battery of a mobile device to be wirelessly charged. It can be charged without connecting through a wire, and the power source comes from the fuel. Batteries can therefore reduce environmental pollution.

In order to achieve the above-mentioned implementation objective, a wireless charging device for a fuel cell according to the present invention includes a fuel cell power module; a transmission module having a boost converter electrically connected to the fuel cell power module and A DC-AC converter connected to the boost converter; a transmission coil group, which is a DC-AC converter electrically connected to the transmission module; a receiving coil group, which is electrically connected to the transmission coil group; and a receiving module, It has a rectifier electrically connected to the receiving coil group and a voltage regulator electrically connected to the rectifier.

In one embodiment of the present invention, the fuel cell power module has a hydrogen tank and a fuel cell stack connected to the hydrogen tank.

In one embodiment of the present invention, the receiving coil group and the receiving module are disposed in a mobile device. The mobile device may be, for example, a smart phone or a tablet computer.

In one embodiment of the present invention, the voltage regulator of the receiving module is electrically connected to a rechargeable battery of a mobile device.

In one embodiment of the present invention, the transmission coil group has a plurality of transmission coils, and each transmission coil is partially overlapped and arranged with at least two transmission coils.

In one embodiment of the present invention, the receiving coil group has a plurality of receiving coils, and each receiving coil system is partially overlapped and arranged with at least two receiving coils.

In one embodiment of the present invention, the frequency between the transmission coil group and the reception coil group is 100 kHz-250 kHz.

In one embodiment of the present invention, the transmission distance between the transmission coil group and the reception coil group is 1 mm-1 cm.

In one embodiment of the present invention, the Qi wireless charging standard is used between the transmitting coil group and the receiving coil group.

(1) ‧‧‧Fuel Cell Power Module

(11) ‧‧‧Hydrogen tank

(12) ‧‧‧ Fuel cell stack

(2) ‧‧‧Transmission Module

(21) ‧‧‧Boost Converter

(22) ‧‧‧DC-AC converter

(3) ‧‧‧Transmission coil group

(31) ‧‧‧Transmission coil

(4) ‧‧‧Receiving coil group

(41) ‧‧‧Receiving coil

(5) ‧‧‧Receiving module

(51) ‧‧‧Rectifier

(52) ‧‧‧Voltage Regulator

(6) ‧‧‧ Rechargeable battery

First figure: Schematic connection diagram of the preferred embodiment of the present invention.

FIG. 2 is a schematic diagram of the overall appearance of a preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of an arrangement of a transmission coil group and a reception coil group according to a preferred embodiment of the present invention.

The purpose of the present invention and its structural and functional advantages will be explained based on the structure shown in the following drawings, in conjunction with specific embodiments, so that the reviewing committee can have a deeper and more specific understanding of the present invention.

Please refer to the first figure and the second figure. A wireless charging device for a fuel cell according to the present invention It includes: a fuel cell power module (1), which has a hydrogen tank (11) and a fuel cell stack (12) connected to the hydrogen tank (11); a transmission module (2), which has A boost converter (21) electrically connected to the fuel cell power module (1) and a DC-AC converter (22) electrically connected to the boost converter (21); a transmission coil group (3), It is a DC-AC converter (22) electrically connected to the transmission module (2). The transmission coil group (3) has a plurality of transmission coils (31). Each transmission coil (31) is connected to at least two transmission coils ( 31) Partially overlapped and arranged; a receiving coil group (4) is connected to the transmitting coil group (3) wirelessly, and the receiving coil group (4) has a plurality of receiving coils (41), and each receiving coil (41) is connected with At least two receiving coils (41) are partially overlapped and arranged; and a receiving module (5) is provided with a rectifier (51) electrically connected to the receiving coil group (4) and an electrically connected rectifier (51).压 器 (52).

The receiving coil group (4) and the receiving module (5) are arranged in a mobile device. The mobile device may be, for example, a smart phone or a tablet computer, so that the voltage regulator (52) of the receiving module (5) The rechargeable battery (6) electrically connected to the mobile device; and the Qi wireless charging standard is used between the transmission coil group (3) and the receiving coil group (4), with a frequency of about 100kHz-250kHz and a transmission distance of about 1mm- 1cm.

In addition, through the following specific examples, the scope of the present invention can be further proved, but it is not intended to limit the scope of the present invention in any form.

Please continue to refer to the first and second figures. The present invention mainly uses the fuel cell power module (1) as the power source of the wireless charging device of the fuel cell. The hydrogen stored in the hydrogen tank (11) is used as fuel to let Hydrogen is supplied to the fuel cell stack (12) via a pipeline for reaction to generate electricity; The fuel cell power module (1) generates a voltage of 2.5-3V and a current of 5A. This power is transmitted to the boost converter (21) of the transmission module (2), which is a step-up DC-DC converter. , The boost converter (21) raises the voltage from 2.5-3V to 12V, and then the DC-AC converter (22) electrically connected to the boost converter (21), The voltage and current are converted into an AC state to provide to the transmission coil group (3), and the transmission coil group (3) will transmit the voltage and current in the AC state to the receiving coil group (4); the transmission coil group (3) of the present invention consists of A plurality of transmission coils (31) are formed, and a reception coil group (4) is composed of a plurality of reception coils (41). The arrangement of the transmission coils (31) and the reception coils (41) is the same, as shown in the third figure. Each transmission coil (31) partially overlaps at least two transmission coils (31) and is arranged in a 4 * 3 array form. The receiving coils (41) are also arranged in this manner. This arrangement can provide low voltage and high current transmission. ; The receiving coil group (4) and the receiving module (5) are both installed in the mobile device, and the receiving coil group (4) and the transmitting coil group (3) have no physical line connection. Therefore, when using the mobile device, it is necessary to place the mobile device Near the position of the transmission coil group (3), the distance between the reception coil group (4) and the transmission coil group (3) is preferably within 1 cm and the frequency is about 110 kHz to achieve better inductive transmission efficiency; When the receiving coil group (4) receives the voltage and current transmitted by the transmitting coil group (3), it will be transmitted to the rectifier (51) of the receiving module (5), and the rectifier (51) converts the voltage and current in the AC state into DC The voltage and current in the state are adjusted to 5V through a voltage stabilizer (52), and finally a 5V voltage and a current of 1-2A are output to charge the rechargeable battery (6) of the mobile device.

As can be seen from the foregoing implementation description, compared with the prior art, the present invention has the following advantages:

1. The wireless charging device of the fuel cell of the present invention uses a fuel cell power module as a power source to generate electricity with a cleaner fuel, as compared to conventional technologies that use petrochemical fuel or nuclear power to generate power and then provide mobile power. Charging, the present invention is obviously more environmentally friendly.

2. The wireless charging device of the fuel cell of the present invention achieves wireless charging through the transmission coil group and the receiving coil group, so that the user only needs to place the mobile device containing the receiving coil group and the receiving module near the transmission coil group. , You can start charging without the need for additional cable connections, which improves the convenience in practical use.

In summary, the wireless charging device of the fuel cell of the present invention can indeed achieve the expected use effect through the above-disclosed embodiments, and the present invention has not been disclosed before the application, and it has fully complied with the patent law. Regulations and requirements. I filed an application for an invention patent in accordance with the law, and I urge you to examine it and grant the patent.

However, the illustrations and descriptions disclosed above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Anyone who is familiar with the technology, according to the characteristic scope of the present invention, makes other Equivalent changes or modifications should be regarded as not departing from the design scope of the present invention.

Claims (8)

A fuel cell wireless charging device includes: a fuel cell power module having a hydrogen tank and a fuel cell stack connected to the hydrogen tank; a transmission module having an electrical connection to the fuel cell power source The boost converter of the module is connected to a DC-AC converter electrically connected to the boost converter; a transmission coil group is a DC-AC converter electrically connected to the transmission module; a receiving coil group is The transmission coil group is electrically connected; and a receiving module is provided with a rectifier electrically connected to the reception coil group and a voltage regulator electrically connected to the rectifier. For example, the wireless charging device for a fuel cell according to item 1 of the scope of the patent application, wherein the receiving coil group and the receiving module are disposed in a mobile device, and the mobile device is a smart phone or a tablet computer. For example, the wireless charging device for a fuel cell described in item 2 of the patent application scope, wherein the voltage regulator of the receiving module is a rechargeable battery electrically connected to the mobile device. The wireless charging device for a fuel cell according to item 1 of the scope of the patent application, wherein the transmission coil group has a plurality of transmission coils, and each of the plurality of transmission coils partially overlaps with and arranges at least two of the plurality of transmission coils. The wireless charging device for a fuel cell according to item 1 of the scope of the patent application, wherein the receiving coil group has a plurality of receiving coils, and each of the plurality of receiving coils partially overlaps with and arranges at least two of the plurality of receiving coils. The wireless charging device for a fuel cell according to item 1 of the scope of the patent application, wherein the frequency between the transmitting coil group and the receiving coil group is 100 kHz-250 kHz. The wireless charging device for a fuel cell according to item 1 of the scope of the patent application, wherein the transmission distance between the transmission coil group and the reception coil group is 1 mm-1 cm. The wireless charging device for a fuel cell according to item 1 of the scope of patent application, wherein the Qi wireless charging standard is used between the transmitting coil group and the receiving coil group.