TW201902076A - Cordless charging management system employing sliding transformer for cordless charging to achieve high transmission power and efficiency - Google Patents

Abstract

The present invention discloses a cordless charging management system, which comprises at least one cordless charging device and at least one portable cordless power storage device. The cordless charging device comprises a primary magnetic core and a primary winding. The portable cordless power storage device includes a secondary magnetic core, a secondary winding, a first charger and a first battery. When the secondary magnetic core is in contact with the primary magnetic core to form a closed magnetic circuit, the primary magnetic core, the primary winding, the secondary magnetic core and the secondary winding together form a sliding transformer, which may transform the alternating voltage inputted from the primary side to the secondary side into an output alternating voltage. The secondary winding is connected to the first charger, then, the first charger is connected with the first battery to receive the output alternating voltage for charging the first battery.

Description

Wireless charging management system

The present invention relates to a management system, and more particularly to a wireless charging management system.

Press, wireless charging, also known as inductive charging, non-contact inductive charging, is the use of near-field sensing, that is, inductive coupling, by the charger to transfer energy to the device that uses electricity, the device uses the received energy to the battery Charging, and at the same time for its own operation; because the charger and the electrical device are inductively coupled to transmit energy, there is no need to use wire connection between the two, so the charger and the electrical device can be made conductive. The contact is exposed, making it more convenient and reliable to use than wired charging.

The principle of the wireless charging system is electromagnetic induction. When a coil has a current through it, a magnetic field is generated. The magnetic field can be expressed by magnetic lines of force. The magnetic field line is a closed line. The higher the magnetic field density, the stronger the magnetic field. The strength of the magnetic field generated by a coil is not only related to the size, shape, and number of turns of the coil, but also to the magnetic permeability of the core. If the magnetic permeability is higher, the magnetic field generated by the coil is stronger, and the magnetic lines of force are always concentrated in the region where the magnetic permeability is high. When the current through the pair of coils is alternating, a magnetic field can be coupled between the two coils using a magnetic field. When the magnetic core is air, since the magnetic permeability of the air is very low, the magnetic field generated by the primary side coil is not strong, and the magnetic lines of force are very divergent, and only a small part of the magnetic lines of force generated by the primary side coil are to the secondary side coil. The way is that electromagnetic power cannot be transmitted efficiently. Even if the current of the primary coil is increased, the electromagnetic power of the secondary coil will be larger, but the efficiency is still low, and the environmental flux will be affected by the divergence of the magnetic flux. If the frequency of the alternating current is higher than 10 kHz, it will be generated. Radio interference. Even if the frequency is lower than 10 kHz, it will affect the surrounding environment. If there is a metal object, it will generate heat due to eddy currents, and even the human body will have adverse effects.

Accordingly, the present invention has been made in view of the above-mentioned problems, and a wireless charging management system is proposed to solve the problems caused by the prior art.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a wireless charging management system that utilizes a sliding transformer for wireless charging to achieve high transmission power and high efficiency.

To achieve the above objective, the present invention provides a wireless charging management system including at least one wireless charging device and at least one portable wireless power storage device, and the wireless charging device charges the portable wireless power storage device. The wireless charging device includes a primary side core and a primary side winding, and the primary side winding is disposed on the primary side core and receives a driving AC voltage. The portable wireless power storage device includes a secondary side magnetic core, a secondary side winding, a first charger and a first battery. The secondary side winding is disposed on the secondary side magnetic core, and the primary side magnetic core, the primary side winding, and the secondary side are formed when the secondary side magnetic core and the primary side magnetic core are in contact with each other to form a closed magnetic loop. The side core and the secondary winding form a sliding transformer, and the sliding transformer converts the driving AC voltage into an output AC voltage of the secondary winding. The first charger is connected to the secondary winding to receive the output AC voltage and convert this to an output DC voltage. The first battery is connected to the first charger, and the first charger charges the first battery with the output DC voltage.

In an embodiment of the invention, the primary side core and the secondary side core are amorphous alloy cores, and the frequency of driving the alternating voltage is 400 to 1000 Hz.

In an embodiment of the invention, the portable wireless power storage device is disposed on an electric vehicle, such as an electric bicycle.

In an embodiment of the invention, the primary side core and the secondary side core are C-shaped, U-shaped, E-shaped or can-shaped.

In an embodiment of the invention, the primary side magnetic core has two first contact ends, the secondary side magnetic core has two second contact ends, and the second contact ends are respectively provided with two layers of non-magnetic materials ( The non-magnetic protective film, the second contact end is in contact with the first contact end through the non-magnetic material protective film.

In an embodiment of the invention, the non-magnetic material protective film is made of paint, plastic or nylon.

In an embodiment of the invention, the wireless charging device further comprises an outer box, an inner box, a plurality of springs and a flat plate. The outer casing has a first inner space and a first opening communicating therewith, and the inner casing has a second inner space and a second opening communicating therewith. Five springs are disposed in the first inner space, and each spring connects the outer box and the inner box to install the inner box in the first inner space, and the second opening faces the first opening. A flat plate is vertically erected on the inner bottom surface of the inner box and located in the second inner space, the surface of the flat plate is opposite to the second opening, the primary side magnetic core and the primary side winding are disposed in the second inner space, and the primary side magnetic core is disposed on On the surface of the plate, the first contact end faces the second opening. The portable wireless power storage device further includes a mounting box having a third internal space. The outer shape of the mounting box corresponds to the shape of the second opening, the secondary side core and the secondary side winding are disposed in the third internal space, and the second contact end of the secondary side magnetic core penetrates the mounting box. When the second contact end contacts the first contact end through the non-magnetic material protective film, the mounting box is placed in the second opening.

In an embodiment of the invention, the second opening is a horn opening.

In an embodiment of the invention, the inner side of the outer casing is opposite to the first opening, and the inner side has a sliding plate. One end of one of the springs is disposed on the sliding plate and the other end is fixed to the inner casing.

In an embodiment of the invention, the wireless charging device further includes a temperature sensor and a heater. The temperature sensor is disposed in the first internal space and detects the temperature of the first internal space. The temperature sensor generates a temperature control signal when the temperature of the first internal space is lower than a predetermined temperature value. The heater is connected to the temperature sensor and is controlled by the temperature sensor. The heater is disposed in the first internal space, and the heater receives the temperature control signal and is energized to raise the temperature of the first internal space.

In an embodiment of the invention, the wireless charging device further comprises two spring hinges, two door panels and two proximity sensors. The door panels are respectively disposed on the outer box through spring hinges to close the first opening. The proximity sensors are disposed on the inner surface of the outer casing and are respectively adjacent to the spring hinges. When the spring hinge opens the first opening with the door panel, the proximity sensor sends a signal that the mounting box enters the outer box.

In one embodiment of the invention, each proximity sensor is a magnetic sensor or an infrared sensor.

In an embodiment of the invention, the wireless charging device further includes a driving circuit connected to the primary side winding and providing a driving AC voltage.

In an embodiment of the invention, the wireless charging management system further includes a network controller and a power supply device. The network controller generates a power supply signal, and the power supply device and the network controller are connected to the driving circuit and receive the power supply signal, thereby causing the power supply device to generate a DC supply voltage. The drive circuit receives the DC supply voltage and converts it to drive the AC voltage.

In an embodiment of the invention, the wireless charging device further includes a first wireless transmitter and a pressure sensor. The first wireless transmitter is disposed in the first internal space and is connected to the network controller. The pressure sensor is connected to the first wireless transmitter, and the primary side core is disposed on the surface of the flat plate through the pressure sensor. The pressure sensor generates a trigger signal when the primary side core and the secondary side core apply pressure to the pressure sensor. The portable wireless power storage device further includes a second wireless transmitter and a processor. The second wireless transmitter is disposed in the third internal space, and the processor connects the first battery and the second wireless transmitter, and records the identification information of the first battery. The processor receives the trigger signal through the first wireless transmitter and the second wireless transmitter, and transmits the identification information to the network controller through the first wireless transmitter and the second wireless transmitter, and the network controller generates the information according to the identification information. Power supply signal.

In an embodiment of the invention, the network controller is provided with a The preset format, when the preset format matches the format of the corresponding identification information, the network controller generates a power supply signal.

In an embodiment of the present invention, the wireless charging management system further includes a storage device connected to the network controller, and the storage device stores a plurality of first battery identification data that have been charged by the wireless charging device. The network controller compares the first battery identification data with the identification information of the storage device, and when the identification information corresponds to one of the first battery identification data, the network controller generates a power supply signal.

In an embodiment of the present invention, the wireless charging management system further includes at least one cloud server, which is connected to the network controller through the Internet, and the cloud server stores a plurality of second battery identification data. The network controller transmits the identification information to the cloud server to compare the second battery identification data with the identification information. When one of the second battery identification data corresponds to the identification information, the cloud server transmits a power supply request (request) to the network controller, and the network controller generates a power supply signal by using the power supply request.

In an embodiment of the invention, the first wireless transmitter and the second wireless transmitter are infrared transmitters or short-range radio transceivers, such as integrated circuit busbars (I ² C).

In an embodiment of the invention, the wireless charging device further includes a power controller connected to the power supply device and the driving circuit, and receiving the DC supply voltage to generate a first digital signal, a second digital signal, and a first The three-digit signal and a fourth digital signal have a first end and a second end. The driving circuit further comprises an inductor, a first electronic switch, a second electronic switch, a third electronic switch and a fourth electronic switch. The inductor has a third end and a fourth end, and the third end is connected to the second end. The first electronic switch is connected between the ground end and the first end, and is connected to the power controller and receives the first digital signal. The second electronic switch is connected between the power supply device and the first end, and is connected to the power controller, and receives the second digital signal. The third electronic switch is connected between the power supply device and the fourth end, and is connected to the power controller, and receives the third digital signal. The fourth electronic switch is connected between the ground end and the fourth end, and is connected to the power controller and receives the fourth digit signal. The first digital signal, the second digital signal, the third digital signal and the fourth digital signal respectively control the first electronic switch, the second electronic switch, the third electronic switch and the fourth electronic switch to convert the DC supply voltage by using the inductor Drive AC voltage.

In an embodiment of the invention, the power supply device further comprises a second battery, a wind power generator, a second charger, a solar panel, a third charger, a rectifier, a power management circuit and an electric device. Washer. The second battery provides a first DC voltage and the wind generator converts the wind to a first electrical energy. The second charger connects the second battery to the wind power generator to charge the second battery with the first electrical energy. The solar panel converts the solar energy into a second electrical energy, and the third charger connects the second battery and the solar panel to charge the second battery with the second electrical energy. The rectifier receives an AC mains to convert it to a second DC voltage. The power management circuit is connected to the network controller, the driving circuit, the second battery and the rectifier, and detects the first DC voltage and receives the power supply signal. When the first DC voltage is greater than or equal to a preset value of the first voltage, the power management circuit selects the first DC voltage as the DC supply voltage according to the power supply signal. When the first DC voltage is less than the preset value of the first voltage, the power management circuit selects the second DC voltage as the DC supply voltage according to the power supply signal. The position of the electric washer corresponds to the position of the solar panel and is connected to the network controller, and the network controller controls the electric washer to clean the solar panel.

In an embodiment of the invention, the electric washer is an electric wiper.

In an embodiment of the invention, the first charger further includes a rectifier circuit, a voltage comparator, a DC booster and a charging circuit. The rectifier circuit is connected to the secondary side winding and receives an output AC voltage to convert this into a third DC voltage. The voltage comparator is connected to the rectifier circuit, the DC booster and the charging circuit, and receives the third DC voltage. When the third DC voltage is less than a second voltage preset value, the voltage comparator transmits a third DC voltage to the DC booster, and the DC booster increases the third DC voltage to generate a fourth DC voltage. The charging circuit is connected to the first battery. When the third DC voltage is greater than or equal to the preset value of the second voltage, the voltage comparator transmits a third DC voltage to the charging circuit, and the charging circuit converts the third DC voltage or the fourth DC voltage to output DC. Voltage output.

In an embodiment of the invention, when the secondary winding stops outputting the output AC voltage, the DC booster is connected to an external power supply, and the external power supply provides an external DC voltage to the DC booster. The DC booster adds an external DC voltage to generate a fifth DC voltage. The charging circuit charges the first battery with a fifth DC voltage.

In order to give your reviewers a better understanding and understanding of the structural features and efficacies of the present invention, the following is a description of the preferred embodiment and the detailed description.

Embodiments of the invention will be further illustrated below in conjunction with the associated drawings. Wherever possible, the same reference numerals in the drawings In the drawings, shapes and thicknesses may be exaggerated based on simplification and convenient labeling. It is to be understood that the elements not specifically shown in the drawings or described in the specification are those of ordinary skill in the art. A variety of changes and modifications can be made by those skilled in the art in light of the present invention.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 . The following describes the wireless charging management system of the present invention, which includes at least one wireless charging device 10 and at least one portable wireless storage. The electrical device 12, a power supply device 14, a storage device 16, a network controller 18 and at least one cloud server 20, the wireless charging device 10 charges the portable wireless storage device 12. In this embodiment, the number of the wireless charging device 10, the portable wireless power storage device 12, and the cloud server 20 are respectively taken as an example, and the storage device 16 is a hardware such as a hard disk. The portable wireless power storage device 12 is disposed on an electric vehicle, such as an electric bicycle. The wireless charging device 10 includes a primary side core 22, a primary side winding 24, an outer casing 26, an inner casing 28, a plurality of springs 30, a flat plate 32, a temperature sensor 34, a heater 36, and two Spring hinge 38, two door panels 40, two proximity sensors 42, a drive circuit 44, a first wireless transmitter 46, a pressure sensor 48 and a power controller 50, portable wireless power storage device 12 includes a secondary side core 52, a secondary side winding 54, a first charger 56, a first battery 58, a mounting box 60, a two-layer non-magnetic protective film 62, and a second wireless transmitter 64 with a processor 66. For example, the number of the springs 30 is five, each proximity sensor 42 is an infrared sensor or a magnetic sensor, the magnetic sensor is, for example, a reed switch, the first wireless transmitter 46 and the second wireless The transmitter 64 is an infrared transmitter or a short-range radio transceiver such as an integrated circuit bus (I ² C).

The primary side winding 24 is disposed on the primary side core 22 and receives a driving AC voltage DA. The primary side core 22 and the secondary side core 52 are amorphous alloy cores, and the frequency of driving the alternating voltage is 400 to 1000 Hz. The secondary side winding 54 is disposed on the secondary side core 52, and the primary side core 22 is once when the secondary side core 52 and the primary side core 22 are in contact with each other to form a closed magnetic loop. The side winding 24, the secondary side core 52 and the secondary side winding 54 form a sliding transformer to improve the charging efficiency and avoid the adverse effects caused by the leakage of the alternating magnetic field. Since the magnetic permeability of the ferromagnetic material is very high, the magnetic permeability of the air can be as high as several thousand times, so that the primary winding 24 can generate a strong magnetic field under a large current, and the magnetic lines of force are concentrated on the primary side magnetic field. Most of the core 22 and the secondary core 52 can reach the secondary winding 54, which has high transmission efficiency, can be above 90%, and the magnetic lines are on the primary side core 22 and the secondary side. The inside of the core 52 has little impact on the environment. The sliding transformer converts the driving AC voltage DA to an output AC voltage OA to output the output AC voltage OA using the secondary winding 54. The first charger 56 is connected to the secondary side winding 54 to receive the output AC voltage OA and convert this into an output DC voltage OD. The first battery 58 is connected to the first charger 56, and the first charger 56 charges the first battery 58 with the output DC voltage OD.

Electric bicycles require a transmission power of at least 150 watts, and wireless charging must meet this basic requirement. The equipment installed on the electric bicycle is required to be light, and the power of 200 watts is also transmitted. If the working frequency of the sliding transformer is 50 Hz, the required core weight is 1.5 kg, and the working frequency of the sliding transformer is 400 Hz. The weight of the core is 0.32 kg, which is almost one-fifth of 50 Hz. When the operating frequency is between 400 Hz and 1000 Hz, the silicon steel sheet for the general power transformer will have a large loss, and the efficiency of the transformer will be greatly reduced, and the loss can be avoided by using an amorphous alloy. Another advantage of using such an operating frequency is that radio interference is never generated. According to the International Committee for Radio Interference (CISPRA), the lower limit frequency of the radio interference frequency is 10 kHz. The operating frequency of the sliding transformer is much lower than this lower limit frequency. Since more and more communication equipment is used on electric bicycles, since the sliding transformer is selected from the range of 400 Hz to 1000 Hz, even in some unexpected situations, the sliding transformer and the communication system are coupled, and Will cause radio interference.

The primary side core 22 and the secondary side core 52 are C-shaped, U-shaped, E-shaped or pot-shaped. The primary side core 22 has two first contact ends, the secondary side core 52 has two second contact ends, and the second contact ends are respectively provided with two non-magnetic protective films 62. The second contact end contacts the first contact end through the non-magnetic material protective film 62. The material of the non-magnetic material protective film 62 is paint, plastic or nylon. The thickness of the non-magnetic material protective film 62 is on the order of 10 ^-4 meters, which has little effect on the efficiency of the transformer, but the non-magnetic material protective film 62 prevents the secondary side core 52 from being rusted, which greatly improves the reliability of the system. help.

The outer casing 26 has a first inner space 68 and a first opening 70 communicating therewith. The inner casing 28 has a second inner space 72 and a second opening 74 communicating therewith, wherein the second opening 74 is, for example, a horn opening. The outer casing 26, the inner casing 28 and the mounting box 60 are made of a non-magnetic material. The springs 30 are disposed in the first interior space 68, and each spring 30 connects the outer casing 26 and the inner casing 28 to mount the inner casing 28 in the first inner space 68, and the second opening 74 faces the first opening 70. The flat plate 32 is vertically erected on the inner bottom surface of the inner casing 28 and located in the second inner space 72. The surface of the flat plate 32 is opposite to the second opening 74, and the primary side core 22 and the primary side winding 24 are disposed in the second internal space 72. The primary side core 22 is disposed on the surface of the flat plate 32, and the first contact end of the primary side core 22 faces the second opening 74. The mounting box 60 has a third interior space 76. The outer shape of the mounting box 60 corresponds to the shape of the second opening 74, the secondary side core 52 and the secondary side winding 54 are disposed in the third internal space 76, and the second contact end of the secondary side magnetic core 52 penetrates the mounting box 60. When the second contact end contacts the first contact end of the primary side core 22 through the non-magnetic material protective film 62, the mounting case 60 is placed in the second opening 74. The inner side of the outer casing 26 is opposite to the first opening 70. The inner side has a sliding plate 78. One of the springs 30 is disposed on the sliding plate 78 and is fixed to the inner casing 28. The four corners of the second opening 74 and the four corners of the mounting box 60 are both arcuate, and the spring 30 can slide on the slider 78 in accordance with the elastic force of the spring 30. Therefore, when the mounting box 60 enters the second opening 74, the inner box 28 constantly adjusts its position and direction according to the position and direction of the mounting box 60, so that the secondary side core 52 easily passes through the non-magnetic material protective film 62 to contact the primary side. Magnetic core 22.

The temperature sensor 34 is disposed in the first internal space 68 and detects the temperature of the first internal space 68. The temperature sensor 34 generates a temperature control signal when the temperature of the first internal space 68 is lower than a predetermined temperature value. The heater 36 is connected to the temperature sensor 34 and is controlled by the temperature sensor 34 and disposed in the first internal space 68. The heater 36 receives the temperature control signal and is energized to raise the temperature of the first internal space 68. For example, when the temperature of the first internal space 68 is less than zero degrees Celsius, the temperature sensor 34 generates a temperature control signal, and The heater 36 is energized to raise the temperature of the first interior space 68 to increase the reliability of the wireless charging management system.

The door panels 40 are respectively disposed on the outer casing 26 through spring hinges 38 to close the first opening 70 to prevent rain or snow from entering the first inner space 68 and the second inner space 72. The proximity sensor 42 is disposed on the inner surface of the outer casing 26 and is adjacent to the spring hinge 38, respectively. When the spring hinge 38 opens the first opening 70 with the door panel 40, the proximity sensor 42 signals that the mounting box 60 enters the outer casing 26 to prepare the wireless charging device 10 for wireless charging. Since the wireless charging device 10 does not supply power before the first opening 70 is opened, the power loss is greatly reduced and the charging efficiency is improved.

The drive circuit 44 is connected to the primary side winding 24 and provides a drive AC voltage DA. The network controller 18 generates a power supply signal PE, and the power supply device 14 is connected to the network controller 18 and the drive circuit 44, and receives the power supply signal PE to generate the DC supply voltage DS accordingly. The power controller 50 is connected to the power supply device 14 and the drive circuit 44, and receives the DC supply voltage DS. The drive circuit 44 receives the DC supply voltage DS, and the power supply controller 50 controls the drive circuit 44 to convert the DC supply voltage DS to drive the AC voltage DA. The first wireless transmitter 46 is disposed in the first internal space 68 and is connected to the network controller 18. The pressure sensor 48 is connected to the first wireless transmitter 46, and the primary side core 22 is disposed on the surface of the flat plate 32 through the pressure sensor 48. When the primary side core 22 and the secondary side core 52 pressurize the pressure sensor 48, the pressure sensor 48 generates a trigger signal T. The second wireless transmitter 64 is disposed in the third internal space 76. The processor 66 connects the first battery 58 and the second wireless transmitter 64, and records the identification information ID of the first battery 58. The processor 66 receives the trigger signal T through the first wireless transmitter 46 and the second wireless transmitter 64, and transmits the identification information ID to the network controller 18 through the first wireless transmitter 46 and the second wireless transmitter 64. The network controller 18 generates a power supply signal PE based on the identification information ID. At this time, the closed magnetic circuit has been formed, and the wireless charging device 10 starts wireless charging.

The network controller 18 has three ways to generate the power supply signal PE. The network controller 18 is provided with a preset format. When the preset format corresponds to the format of the identification information ID, the network controller 18 generates the power supply signal PE. In addition, the storage device 16 is coupled to the network controller 18, which stores a plurality of first battery identification data that has been charged by the wireless charging device 10. The network controller 18 compares the first battery identification data with the identification information ID. When the identification information ID corresponds to one of the first battery identification data, the network controller 18 generates the power supply signal PE. Finally, the cloud server 20 communicates with the network controller 18 via the Internet. The cloud server 20 stores a plurality of second battery identification data. The network controller 18 transmits the identification information ID to the cloud server 20 to compare the second battery identification data with the identification information ID. When one of the second battery identification data corresponds to the identification information ID, the cloud server 20 transmits a power supply request R to the network controller 18, and the network controller 18 generates the power supply signal PE by using the power supply request R.

The operation of the wireless charging management system of the present invention will be described below. First, the door panel 40 closes the first opening 70. When the spring hinge 38 opens the first opening 70 with the door panel 40, the proximity sensor 42 mounts the cartridge 60 into the outer casing 26, requiring the wireless charging device 10 to be ready for wireless charging. Next, the mounting box 60 is placed in the second opening 74, so that the second contact end of the secondary side magnetic core 52 is in contact with the first contact end of the primary side core 22 through the non-magnetic material protective film 62 to form a closed magnetic field. road. When the primary side core 22 and the secondary side core 52 pressurize the pressure sensor 48, the pressure sensor 48 generates a trigger signal T. The processor 66 receives the trigger signal T through the first wireless transmitter 46 and the second wireless transmitter 64, and transmits the identification information ID to the network controller 18 through the first wireless transmitter 46 and the second wireless transmitter 64. The network controller 18 first compares the first battery identification data and the identification information ID in the storage device 16. When the identification information ID corresponds to one of the first battery identification data, the network controller 18 generates the power supply signal PE. If the identification information ID does not correspond to one of the first battery identification data, the network controller 18 transmits the identification information ID to the cloud server 20 to compare the second battery identification data with the identification information ID. When one of the second battery identification data corresponds to the identification information ID, the cloud server 20 transmits the power supply request R to the network controller 18, and the network controller 18 generates the power supply signal PE by using the power supply request R. At the same time, the network controller 18 stores the identification information ID in the storage device 16 for next use. If the identification information ID does not correspond to one of the first battery identification data, and the network is faulty, the network controller 18 determines whether the preset format corresponds to the format of the identification information ID, and if so, the network controller 18 generates power. The signal PE stores the identification information ID in the storage device 16. When the network is restored, the identification information ID is sent to the cloud server 20. If the network controller 18 determines that the preset format does not correspond to the format of the identification information ID, the network controller 18 stops operating.

The power supply device 14 receives the power supply signal PE to generate the DC supply voltage DS accordingly. The drive circuit 44 and the power supply controller 50 receive the DC supply voltage DS, and the power supply controller 50 controls the drive circuit 44 to convert the DC supply voltage DS to drive the AC voltage DA. The primary side core 22, the primary side winding 24, the secondary side core 52, and the secondary side winding 54 are switched to drive the AC voltage DA to the output AC voltage OA to output the above-described output AC voltage OA by the secondary winding 54. The first charger 56 receives the output AC voltage OA and converts this into an output DC voltage OD. The first charger 56 charges the first battery 58 with the output DC voltage OD. When the first battery 58 is fully charged, the processor 66 notifies the network controller 18 through the second wireless transmitter 64 and the first wireless transmitter 46 to cause the network controller 18 to stop outputting the power supply signal PE, and the wireless charging device 10 The portable wireless power storage device 12 is no longer charged. Finally, when the mounting box 60 leaves the first opening 70 and the second opening 74, the door panel 40 closes the first opening 70.

In addition to identifying the information ID, the processor 66 can also retrieve the remaining power and charge and discharge records of the first battery 58. If the portable wireless power storage device 12 is disposed on the electric bicycle, the processor 66 captures the performance parameters of the electric bicycle, such as the driving distance, the power consumption of the electric motor, and the position of the electric bicycle. The processor 66 can also transmit the captured information to the cloud server 20 through the second wireless transmitter 64, the first wireless transmitter 46, and the network controller 18 to perform group management of the electric bicycle, for example, calculating the vehicle density. With mobility.

Please refer to Figure 6. The power controller 50 receives the DC supply voltage DS to generate a first digital signal D1, a second digital signal D2, a third digital signal D3 and a fourth digital signal D4. The primary winding 24 has a first end and a Second end. The driving circuit 44 further includes an inductor 80, a first electronic switch 82, a second electronic switch 84, a third electronic switch 86 and a fourth electronic switch 88. In order to improve efficiency and reduce power consumption of the drive circuit 44 itself, the drive circuit 44 uses semiconductor switching elements. However, the speed of the semiconductor switching element is very fast, and the resistance is small when turned on. Once turned on, the current quickly reaches a stable value, but the principle of the transformer requires a continuously varying current on the primary side, so a suitable inductor is inserted. The inductor 80 has a third end and a fourth end, and the third end is connected to the second end of the primary winding 24. The first electronic switch 82 is connected between the ground end and the first end of the primary winding 24, and is connected to the power controller 50, and receives the first digital signal D1. The second electronic switch 84 is connected between the power supply device 14 and the first end of the primary winding 24, and is connected to the power controller 50, and receives the second digital signal D2. The third electronic switch 86 is connected between the power supply device 14 and the fourth end of the inductor 80, and is connected to the power controller 50, and receives the third digital signal D3. The fourth electronic switch 88 is connected between the ground terminal and the fourth end of the inductor 80, and is connected to the power controller 50, and receives the fourth digit signal D4. The first digital signal D1, the second digital signal D2, the third digital signal D3 and the fourth digital signal D4 respectively control the first electronic switch 82, the second electronic switch 84, the third electronic switch 86 and the fourth electronic switch 88, The DC supply voltage DS is converted by the inductor 80 to drive the AC voltage DA.

Please refer to Figure 6 and Figure 7. In the first time period T1, the second electronic switch 84 and the fourth electronic switch 88 are turned on, the first electronic switch 82 and the third electronic switch 86 are turned off, and the current is passed from the power supply device 14 through the second electronic switch 84, the primary side winding 24 The inductor 80 and the fourth electronic switch 88 are connected to the ground. Due to the action of the inductor 80, the current changes slowly from small to large. In the process, the power supply device 14 not only supplies energy to the primary winding 24 but also stores energy. In the inductor 80. In the second time period T2, the second electronic switch 84 is turned off from being turned on, the first electronic switch 82 is turned on by the turn-off, the fourth electronic switch 88 is kept in the on state, and the third electronic switch 86 is kept in the off state. The energy stored in the inductor 80 passes through the fourth electronic switch 88 to the ground, and current flows from the primary side winding 24 to the inductor 80, that is, the primary side winding 24 continues to supply energy, but the current decreases from large to large. In the third time period T3, the first electronic switch 82 continues to be turned on, the second electronic switch 84 continues to remain off, the third electronic switch 86 is turned off from being turned on, the fourth electronic switch 88 is turned off by conduction, and the current is supplied from the power supply device. 14 through the third electronic switch 86, the inductor 80, the primary side winding 24 and the first electronic switch 82 to the ground, due to the action of the inductor 80, the current changes slowly from small to large, in the process, the power supply device 14 is not only Energy is supplied to the primary side winding 24, which is also stored in the inductor 80. In the fourth time period T4, the first electronic switch 82 remains on, the second electronic switch 84 remains off, the third electronic switch 86 is turned off by conduction, and the fourth electronic switch 88 is turned on by off. The energy stored in the inductor 80 flows through the primary side winding 24 and the first electronic switch 82 to the ground terminal, and the fourth electronic switch 88 discharges, that is, the primary side winding 24 continues to supply energy, and the current still flows from the inductor 80 to the primary side. Winding 24, but the current is reduced from large to small. It can be seen from the waveform of the primary side current passing through the primary side winding 24 of FIG. 7 that the advantage of the primary side current is that the current waveform is positive and negative symmetric, and the average value is small, which can reduce the saturation of the iron core and reach the maximum current. amplitude. This primary side current is used to generate the above-described driving AC voltage.

Please refer to Figure 8. The power supply device 14 further includes a second battery 90, a wind power generator 92, a second charger 94, a solar panel 96, a third charger 98, a rectifier 100, a power management circuit 102 and an electric cleaning device. 104. The second battery 90 provides a first DC voltage V1, and the wind power generator 92 converts the wind power to a first power E1. The second charger 94 connects the second battery 90 with the wind power generator 92 to charge the second battery 94 with the first electrical energy E1. The solar panel 96 converts the solar energy into a second electrical energy E2, and the third charger 98 connects the second battery 90 with the solar panel 96 to charge the second battery 90 with the second electrical energy E2. The rectifier 100 receives an AC mains G to convert it to a second DC voltage V2. The power management circuit 102 is connected to the network controller 18, the driving circuit 44, the power controller 50, the second battery 90 and the rectifier 100, and detects the first DC voltage V1 and receives the power supply signal PE. When the first DC voltage V1 is greater than or equal to a first voltage preset value, the power management circuit 102 selects the first DC voltage V1 as the DC supply voltage DS according to the power supply signal PE. When the first DC voltage V1 is less than the first voltage preset value, the power management circuit 102 selects the second DC voltage V2 as the DC supply voltage DS according to the power supply signal PE. When the wind power generator 92 and the solar panel 96 can meet the power requirement, the AC mains G is not used, and only when the wind power generator 92 and the solar panel cannot meet the power requirement, the AC mains G is used, so that the power consumption cost is reduced to lowest. The position of the electric washer 104 corresponds to the position of the solar panel 96 and is connected to the network controller 18, which controls the electric washer 104 to clean the solar panel 96. For example, the electric washer 104 is an electric wiper, and the network controller 18 controls the electric wiper to periodically clean the solar panel 96 to improve the conversion efficiency of the solar panel 96.

Please refer to Figure 9. The first charger 56 further includes a rectifier circuit 106, a voltage comparator 108, a DC booster 110 and a charging circuit 112. The rectifier circuit 106 is connected to the secondary side winding 54 and receives the output AC voltage OA to convert this into a third DC voltage V3. The voltage comparator 108 is connected to the rectifier circuit 106, the DC booster 110, and the charging circuit 112, and receives the third DC voltage V3. When the third DC voltage V3 is less than a second voltage preset value, the voltage comparator 108 transmits a third DC voltage V3 to the DC booster 110, and the DC booster 110 adds a third DC voltage V3 to generate a fourth DC. The voltage V4, in turn, improves the reliability of the management system. The charging circuit 112 is connected to the first battery 58. When the third DC voltage V3 is greater than or equal to the second voltage preset value, the voltage comparator 108 transmits the third DC voltage V3 to the charging circuit 112, and the charging circuit 112 converts the third DC voltage V3. Or the fourth DC voltage V4 is an output DC voltage OD output.

The DC booster 110 has a spare jack. When the secondary side winding 54 stops outputting the output AC voltage OA, the DC booster 110 is connected to an external power supply 114 through the spare jack. The external power supply 114 provides an external DC voltage EX to the DC booster 110. The DC booster 110 adds an external DC voltage EX to generate a fifth DC voltage V5. The charging circuit 112 charges the first battery 58 with the fifth DC voltage V5.

In summary, the present invention utilizes a sliding transformer for wireless charging to achieve high transmission power.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that the shapes, structures, features, and spirits described in the claims of the present invention are equally varied and modified. All should be included in the scope of the patent application of the present invention.

10‧‧‧Wireless charging device

12‧‧‧Portable wireless storage device

14‧‧‧Power supply unit

16‧‧‧Storage device

18‧‧‧Network Controller

20‧‧‧Cloud Server

22‧‧‧primary core

24‧‧‧ primary winding

26‧‧‧Outer box

28‧‧‧ inner box

30‧‧‧ Spring

32‧‧‧ tablet

34‧‧‧Temperature Sensor

36‧‧‧heater

38‧‧‧Electric spring hinge

40‧‧‧ Door panel

42‧‧‧ proximity sensor

44‧‧‧ drive circuit

46‧‧‧First wireless transmitter

48‧‧‧ Pressure Sensor

50‧‧‧Power Controller

52‧‧‧secondary core

54‧‧‧secondary winding

56‧‧‧First Charger

58‧‧‧First battery

60‧‧‧Installation box

62‧‧‧Non-magnetic protective film

64‧‧‧Second wireless transmitter

66‧‧‧Processor

68‧‧‧First interior space

70‧‧‧ first opening

72‧‧‧Second internal space

74‧‧‧second opening

76‧‧‧ Third internal space

78‧‧‧Slide rails

80‧‧‧Inductors

82‧‧‧First electronic switch

84‧‧‧Second electronic switch

86‧‧‧ Third electronic switch

88‧‧‧fourth electronic switch

90‧‧‧Second battery

92‧‧‧ wind power generator

94‧‧‧Second charger

96‧‧‧ solar panels

98‧‧‧ Third Charger

100‧‧‧Rectifier

102‧‧‧Power Management Circuit

104‧‧‧Electric washer

106‧‧‧Rectifier circuit

108‧‧‧Voltage comparator

110‧‧‧DC booster

112‧‧‧Charging circuit

114‧‧‧External power supply

1 is a circuit block diagram of a wireless charging management system of the present invention. Figure 2 is a side elevational view of the outer casing and its internal components of the present invention. Figure 3 is a front elevational view of the outer casing and its internal components of the present invention. Figure 4 is a side elevational view of the mounting box of the present invention and its internal components. Figure 5 is a front elevational view of the mounting box of the present invention and its internal components. Figure 6 is a circuit block diagram of the driving circuit of the present invention. Fig. 7 is a waveform diagram of the primary side current of the present invention. Figure 8 is a circuit block diagram of a power supply device of the present invention. Figure 9 is a block diagram of the first charger of the present invention.

Claims (25)

A wireless charging management system comprising: at least one wireless charging device comprising: a primary side core; and a primary side winding disposed on the primary side core and receiving a driving AC voltage; and at least one portable type a wireless power storage device, the at least one wireless charging device charging the at least one portable wireless power storage device, the at least one portable wireless power storage device comprising: a secondary side magnetic core; a secondary side winding The primary side core, the primary side winding, and the second side magnetic core, when the secondary side magnetic core and the primary side magnetic core are in contact with each other to form a closed magnetic loop The secondary magnetic core and the secondary winding form a sliding transformer, and the sliding transformer converts the driving AC voltage into an output AC voltage to output the output AC voltage by using the secondary winding; Connecting the secondary winding to receive the output AC voltage and converting the output to an output DC voltage; and a first battery connected to the first Charger, with which the first charger output DC voltage of the first battery charging. The wireless charging management system of claim 1, wherein the primary side magnetic core and the secondary side magnetic core are amorphous alloy cores, and the driving AC voltage has a frequency of 400 to 1000 Hz. The wireless charging management system of claim 1, wherein the at least one portable wireless power storage device is disposed on the electric vehicle. The wireless charging management system of claim 3, wherein the electric vehicle is an electric bicycle. The wireless charging management system of claim 1, wherein the primary side core and the secondary side core are C-shaped, U-shaped, E-shaped or can-shaped. The wireless charging management system of claim 1, wherein the primary side magnetic core has two first contact ends, the secondary side magnetic core has two second contact ends, and the second second contact ends are respectively provided with two non-contacts A non-magnetic protective film, the second contact ends contacting the first contact ends through the non-magnetic protective films. The wireless charging management system of claim 6, wherein the non-magnetic material protective film is made of paint, plastic or nylon. The wireless charging management system of claim 6, wherein the at least one wireless charging device further comprises: an outer casing having a first inner space and one of the first openings connected thereto; and an inner casing having a second inner portion a second opening of the space and its connection; a plurality of springs disposed in the first inner space, each spring connecting the outer box and the inner box to mount the inner box in the first inner space, and The second opening faces the first opening; and a flat plate vertically erects on the inner bottom surface of the inner box and is located in the second inner space, the surface of the flat plate is opposite to the second opening, the primary side magnetic core a primary side winding is disposed in the second internal space, the primary side magnetic core is disposed on the surface of the flat plate, the first contact ends are toward the second opening; and the at least one portable wireless power storage device is further The utility model comprises a mounting box having a third inner space, the outer shape of the mounting box is opposite to the shape of the second opening, and the secondary side magnetic core and the secondary side winding are disposed in the third inner space, and the Second time When the plurality of second contact end of the core penetrate the cartridge is mounted, the plurality of second contact end in contact with the plurality of first contact end through the plurality of non-magnetic material protective film, the cartridge is mounted into the second opening. The wireless charging management system of claim 8, wherein the second opening is a horn opening. The wireless charging management system of claim 8, wherein the inner side of the outer box is opposite to the first opening, the inner side has a sliding plate, and one of the springs is disposed on the sliding plate and fixed therein. On the box. The wireless charging management system of claim 8, wherein the at least one wireless charging device further comprises: a temperature sensor disposed in the first internal space and detecting a temperature of the first internal space, where When the temperature of the first internal space is lower than a preset temperature value, the temperature sensor generates a temperature control signal; and a heater is connected to the temperature sensor and controlled by the temperature sensor, and is set In the first internal space, the heater receives the temperature control signal to increase the temperature of the first internal space. The wireless charging management system of claim 8, wherein the at least one wireless charging device further comprises: two spring hinges; two door panels respectively disposed on the outer box through the spring hinges to close the first opening And two proximity sensors are disposed on the inner surface of the outer casing and respectively adjacent to the spring hinges, and when the spring hinges open the first opening by using the door panels, the proximity sensors emit the The signal that the mounting box enters the outer box. The wireless charging management system of claim 12, wherein each of the proximity sensors is an infrared sensor or a magnetic sensor. The wireless charging management system of claim 12, wherein the at least one wireless charging device further comprises a driving circuit that connects the primary side winding and provides the driving AC voltage. The wireless charging management system of claim 14, further comprising: a network controller that generates a power supply signal; and a power supply device that connects the network controller to the driving circuit and receives the power supply signal to According to this, a DC supply voltage is generated, and the drive circuit receives the DC supply voltage and converts it into the drive AC voltage. The wireless charging management system of claim 15, wherein the at least one wireless charging device further comprises: a first wireless transmitter disposed in the first internal space and connected to the network controller; and a pressure sensing Connected to the first wireless transmitter, the primary side magnetic core is disposed on the surface of the flat plate through the pressure sensor, and the pressure sensor is applied to the primary side magnetic core and the secondary side magnetic core When the pressure is pressed, the pressure sensor generates a trigger signal; and the at least one portable wireless power storage device further comprises: a second wireless transmitter disposed in the third internal space; and a processor connecting the The first battery and the second wireless transmitter record the identification information of the first battery, and the processor receives the trigger signal through the first wireless transmitter and the second wireless transmitter, and thereby transmits the first signal The wireless transmitter and the second wireless transmitter transmit the identification information to the network controller, and the network controller generates the power supply signal according to the identification information. The wireless charging management system of claim 16, wherein the network controller is provided with a preset format, and the network controller generates the power supply signal when the preset format corresponds to the format of the information. The wireless charging management system of claim 16, further comprising a storage device connected to the network controller, wherein the storage device stores a plurality of first battery identification data, and the network controller compares the A battery identification data and the identification information, the network controller generates the power supply signal when the identification information corresponds to one of the first battery identification data. The wireless charging management system of claim 16, further comprising at least one cloud server, wherein the network controller is connected through the Internet, and the at least one cloud server stores a plurality of second battery identification materials. The network controller transmits the identification information to the at least one cloud server to compare the second battery identification data with the identification information, and when one of the second battery identification data corresponds to the identification information The at least one cloud server transmits a power supply request to the network controller, and the network controller generates the power supply signal by using the power supply request. The wireless charging management system of claim 16, wherein the first wireless transmitter and the second wireless transmitter are infrared transmitters. The wireless charging management system of claim 15, wherein the at least one wireless charging device further comprises a power controller connected to the power supply device and the driving circuit, and receiving the DC supply voltage to generate a first digit a signal, a second digit signal, a third digit signal and a fourth digit signal, the primary side winding has a first end and a second end, the driving circuit further comprises: an inductor having a third end And a fourth end connected to the second end; a first electronic switch connected between the ground end and the first end, and connected to the power controller, and receiving the first digital signal; a second electronic switch connected between the power supply device and the first end, and connected to the power controller, and receiving the second digital signal; a third electronic switch connecting the power supply device and the fourth end And connecting the power controller and receiving the third digit signal; and a fourth electronic switch connected between the ground end and the fourth end, and connecting the a power controller, and receiving the fourth digital signal, wherein the first digital signal, the second digital signal, the third digital signal, and the fourth digital signal respectively control the first electronic switch, the second electronic switch, and the And a third electronic switch and the fourth electronic switch to convert the DC supply voltage to the driving AC voltage by using the inductor. The wireless charging management system of claim 15, wherein the power supply device further comprises: a second battery to provide a first DC voltage; a wind generator to convert the wind into a first power; and a second charger to connect The second battery and the wind power generator are configured to charge the second battery by using the first electric energy; a solar panel converts the solar energy into a second electric energy; and a third charger connects the second battery and the solar panel, Charging the second battery with the second electrical energy; a rectifier receiving an AC mains to convert it to a second DC voltage; a power management circuit connecting the network controller, the driving circuit, the second The battery and the rectifier detect the first DC voltage and receive the power supply signal. When the first DC voltage is greater than or equal to a first voltage preset value, the power management circuit selects the first according to the power supply signal. The DC voltage is the DC supply voltage, and when the first DC voltage is less than the preset value of the first voltage, the power management circuit is configured according to the power supply For selecting the second DC voltage supply DC voltage; and an electric cleaner, which position should the position of the solar panels, and connected to the network controller, the network controller controls the cleaning power of the solar panel cleaning. The wireless charging management system of claim 22, wherein the electric washer is an electric wiper. The wireless charging management system of claim 1, wherein the first charger further comprises: a rectifier circuit connected to the secondary winding and receiving the output AC voltage to convert the third DC voltage; a voltage comparator connected to the rectifier circuit, the DC booster and the charging circuit, and receiving the third DC voltage; a DC booster, when the third DC voltage is less than a second voltage preset value, The voltage comparator transmits the third DC voltage to the DC booster, the DC booster increases the third DC voltage to generate a fourth DC voltage; and a charging circuit connecting the first battery in the third When the DC voltage is greater than or equal to the second voltage preset value, the voltage comparator transmits the third DC voltage to the charging circuit, and the charging circuit converts the third DC voltage or the fourth DC voltage to the output DC voltage output. . The wireless charging management system of claim 24, wherein when the secondary winding stops outputting the output AC voltage, the DC booster is connected to an external power supply, the external power supply provides an external DC voltage to the DC boost The DC booster increases the external DC voltage to generate a fifth DC voltage, and the charging circuit charges the first battery with the fifth DC voltage.