CN109795347B - Wireless intelligent charging method for electric bicycle - Google Patents
Wireless intelligent charging method for electric bicycle Download PDFInfo
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- CN109795347B CN109795347B CN201910017241.XA CN201910017241A CN109795347B CN 109795347 B CN109795347 B CN 109795347B CN 201910017241 A CN201910017241 A CN 201910017241A CN 109795347 B CN109795347 B CN 109795347B
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- 239000000969 carrier Substances 0.000 claims description 3
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- 238000010276 construction Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention discloses a wireless intelligent charging method for an electric bicycle, which belongs to the technical field of charging and comprises the following steps: A. firstly, a 220VAC power supply is processed through a transformer and a voltage reduction rectification filter module to obtain direct-current voltage; B. the direct current voltage is sent to the power full bridge, and the power full bridge generates square wave alternating current voltage under the control of the MCU, and the invention has the beneficial effects that: 1. the traditional wired transformer charging mode is changed into wireless charging. 2. Wireless charging only needs simple laying of the charging circuit in the earlier stage, and does not need to be similar to the current special charging grid. 3. Wireless charging because only a simple wire lay is required. The building method can be built in commercial blocks, the building period is short, and the building cost only needs 10% of the original cost. 4. After the wireless facility construction that charges was accomplished, the trolley-bus only needs simple berth, and APP control in addition just can realize charging. 5. Because wireless charging, effective distance has certain scope, and the short distance removes, does not influence and charges.
Description
Technical Field
The invention relates to the technical field of charging, in particular to a wireless intelligent charging method for an electric bicycle.
Background
The electric bicycle is one of the most popular travel tools at present, and the existing wired charging technology of the electric bicycle has the following defects:
1. and the wired charging mode is easy to overload. The battery has the condition of continuing to charge in the condition of full charge, and overcharge makes the battery cause the damage easily, even generates heat the potential safety hazard of catching fire. 2. And in a wired charging mode, the wire is easy to overload. One row is inserted and is had the condition of connecing many trolleybuses, in case surpass the bearing capacity of electric wire, the electric wire causes the damage easily, even scalds the potential safety hazard of catching a fire. 3. The wired charging method has poor contact. In the charging process, the socket and the plug are in poor contact, electric sparks can be generated, and the charger can be burnt out. 4. The wired charging mode is directly connected with 220V, and no isolation exists between the wired charging mode and the charger. Because of no isolation, once short circuit and the like exist, the 220V power supply is continuously supplied, and potential safety hazard exists. 5. Wired charging mode, disorderly pulling. The parking spaces for charging are few, and the phenomenon of charging by pulling wires in disorder is caused. Not only has potential safety hazard, but also influences the beauty and appearance of the market.
Disclosure of Invention
The invention aims to provide a wireless intelligent charging method for an electric bicycle, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a wireless intelligent charging method for an electric bicycle is characterized by comprising the following steps:
A. firstly, a 220VAC power supply is processed through a transformer and a voltage reduction rectification filter module to obtain direct-current voltage;
B. sending the direct current voltage into a power full bridge, and generating square wave alternating current voltage by the power full bridge under the control of an MCU (microprogrammed control unit);
C. applying square wave alternating voltage to two ends of an LC resonance circuit to generate alternating current;
D. alternating current generates a magnetic field through a transmitting end coil;
E. the receiving end coil induces the magnetic field, alternating current is generated on the receiving end LC circuit, and the alternating current is converted into direct current voltage through the rectifier bridge and is transmitted to the battery charging circuit;
F. after scanning the code and paying through the mobile phone APP, the receiving end MCU starts the battery charging circuit to charge the battery after obtaining a command from the GPRS.
An MCU operation method in the wireless intelligent charging method of the electric bicycle according to claim 1, comprising the following steps:
1) initializing an MCU register and variables;
2) initializing two complementary 4-channel PWM carriers;
3) detecting carrier feedback initialization;
4) initializing an LED indicator lamp;
5) starting 4-channel PWM carrier waves;
6) detecting a feedback duty ratio, if a foreign matter LED1 indicates or a no-load waveform LED2 indicates, starting carrier timing operation, entering the next step, if a normal received waveform LED3 indicates, closing carrier timing, and returning to the previous step;
7) and detecting the carrier timing time, if the carrier timing reaches 50 milliseconds and the 4-channel carrier is closed, closing the carrier timing and delaying for 450 milliseconds, and returning to the step 5) when the carrier timing does not reach 50 milliseconds.
As a further technical scheme of the invention: the frequency of the square wave alternating voltage is 170 KHz.
As a further technical scheme of the invention: the transformer and the voltage reduction rectification filter module form an AC-DC circuit.
As a further technical scheme of the invention: the turn ratio of the primary winding to the secondary winding of the transformer is 220: 80.
As a further technical scheme of the invention: the MCU is also connected with a GPS module and a GPRS module.
Compared with the prior art, the invention has the beneficial effects that: 1. the traditional wired transformer charging mode is changed into wireless charging. 2. Wireless charging only needs simple laying of the charging circuit in the earlier stage, and does not need to be similar to the current special charging grid. 3. Wireless charging because only a simple wire lay is required. The building method can be built in a commercial block, the building period is short, and the building cost only needs 10% of the original building cost. 4. After the wireless facility construction that charges was accomplished, the trolley-bus only needs simple berth, and APP control in addition just can realize charging. 5. Because wireless charging, effective distance has certain scope, and the short distance removes, does not influence and charges.
Drawings
FIG. 1 is a flow chart of the MCU operation process of the present invention.
Fig. 2 is an overall block diagram of the wireless intelligent charging device for the electric bicycle.
Fig. 3 is a schematic diagram of the transmitting end of the wireless intelligent charging device of the electric bicycle.
Fig. 4 is a schematic diagram of a receiving end of the wireless intelligent charging device of the electric bicycle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. 1-4, a wireless intelligent charging method for an electric bicycle includes the following steps:
A. firstly, a 220VAC power supply is processed through a transformer and a voltage reduction rectification filter module to obtain 80V direct-current voltage;
B. b, sending the 80V direct current voltage obtained in the step A into a power full bridge, and generating 170KHz square wave alternating current voltage by the power full bridge under the control of the MCU;
C. b, adding the 170KHz square wave alternating voltage obtained in the step B to two ends of an LC resonance circuit to generate an alternating current;
D. alternating current generates a magnetic field through a transmitting end coil;
E. the receiving end coil induces the magnetic field, alternating current is generated on the receiving end LC circuit, and the alternating current is converted into direct current voltage through the rectifier bridge and is transmitted to the battery charging circuit;
F. after scanning the code and paying through the mobile phone APP, the receiving end MCU obtains a command from the GPRS, and then the battery charging circuit charges the battery.
Wherein, after the MCUMCU obtains the command from the GPRS, a program flow chart of the MCU is shown in fig. 1: comprises the following steps:
1) initializing an MCU register and variables;
2) initializing two-way complementary 4-channel PWM carriers;
3) detecting carrier feedback initialization;
4) initializing an LED indicator lamp;
5) starting 4-channel PWM carrier waves;
6) detecting a feedback duty ratio, if a foreign matter LED1 indicates or a no-load waveform LED2 indicates, starting carrier timing operation, entering the next step, if a normal received waveform LED3 indicates, closing carrier timing, and returning to the previous step;
7) and detecting the carrier timing time, if the carrier timing reaches 50 milliseconds and the 4-channel carrier is closed, closing the carrier timing and delaying for 450 milliseconds, and returning to the step 5) when the carrier timing does not reach 50 milliseconds.
Example 2: on the basis of embodiment 1, the wireless charging device adopted by the invention comprises an AC-DC circuit, a wireless transmitting end, a wireless receiving end and a battery charging circuit. As shown in fig. 2, one end of the AC-DC circuit is connected to the 220V commercial power, the other end is connected to the wireless transmitting terminal, the wireless transmitting terminal and the wireless receiving terminal complete electric energy transmission, and the wireless receiving terminal is further connected to the battery charging circuit. The AC-DC circuit comprises a transformer isolation module, a voltage reduction rectification filter module, an MCU, an LC resonance circuit and a power full bridge. One end of the transformer isolation module is connected with a 220VAC power supply, and the other end of the transformer isolation module is respectively connected with the MCU, the LC resonance circuit and the power full bridge through the voltage reduction rectification filter module. The output voltage of the voltage reduction rectification filter module is 80V. The MCU is also connected with a GPS module and a GPRS module.
The 220V alternating current voltage is converted into 80V direct current after passing through the transformer and the voltage reduction rectification filter module, the direct current respectively enters the MCU, the LC resonance circuit and the power full bridge, and the direct current voltage is input to the wireless transmitting end. The direct current voltage passes through the MCU, and alternating current voltage is generated on the power full bridge, a square wave with the frequency of 170KHz is loaded on two ends of the LC resonance circuit, and alternating current is generated by the square wave. Alternating current passes through the coil and produces the magnetic field, and receiving terminal coil senses this magnetic field, produces alternating current at receiving terminal LC resonance circuit, and alternating current passes through the rectifier bridge and turns into direct current voltage, at this moment sweeps the code and pays back receiving terminal and obtain the back from GPRS through cell-phone APP, and battery charging circuit charges for the battery.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. An electric vehicle wireless intelligent charging method is characterized by comprising the following steps:
A. firstly, a 220VAC power supply is processed through a transformer and a voltage reduction rectification filter module to obtain direct-current voltage;
B. sending the direct-current voltage into a power full bridge, wherein the power full bridge generates square-wave alternating-current voltage under the control of a transmitting end MCU;
C. applying square wave alternating voltage to two ends of an LC resonance circuit to generate alternating current;
D. alternating current generates a magnetic field through a transmitting end coil;
E. the receiving end coil induces the magnetic field, alternating current is generated on the receiving end LC circuit, and the alternating current is converted into direct current voltage through the rectifier bridge and is transmitted to the battery charging circuit;
F. after code scanning payment is carried out through the mobile phone APP, the receiving end MCU starts the battery charging circuit to charge the battery after obtaining a command from the GPRS;
the frequency of the square wave alternating voltage is 170 KHz; the transformer and the voltage reduction rectification filter module form an AC-DC circuit; the turn ratio of a primary winding to a secondary winding of the transformer is 220: 80;
the receiving end MCU operates according to the following steps:
1) initializing an MCU register and variables;
2) initializing two-way complementary 4-channel PWM carriers;
3) detecting carrier feedback initialization;
4) initializing an LED indicator lamp;
5) starting 4-channel PWM carrier waves;
6) detecting a feedback duty ratio, if a foreign matter LED1 indicates or a no-load waveform LED2 indicates, starting carrier timing operation, entering the next step, if a normal received waveform LED3 indicates, closing carrier timing, and returning to the previous step;
7) and detecting the carrier timing time, if the carrier timing reaches 50 milliseconds and the 4-channel carrier is closed, closing the carrier timing, delaying for 450 milliseconds, and if the carrier timing does not reach 50 milliseconds, returning to the step 5), wherein the receiving end MCU is also connected with a GPS module and a GPRS module.
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| CN201910017241.XA CN109795347B (en) | 2019-01-08 | 2019-01-08 | Wireless intelligent charging method for electric bicycle |
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| CN201910017241.XA CN109795347B (en) | 2019-01-08 | 2019-01-08 | Wireless intelligent charging method for electric bicycle |
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| CN109795347A CN109795347A (en) | 2019-05-24 |
| CN109795347B true CN109795347B (en) | 2022-06-21 |
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Family Cites Families (16)
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| US4967332A (en) * | 1990-02-26 | 1990-10-30 | General Electric Company | HVIC primary side power supply controller including full-bridge/half-bridge driver |
| JP5238420B2 (en) * | 2008-09-11 | 2013-07-17 | 矢崎総業株式会社 | Wireless charging system for vehicles |
| DE102009041409A1 (en) * | 2009-09-16 | 2011-03-24 | Georg, Erich W., Dr. | Method for charging a battery pack |
| US8295893B2 (en) * | 2010-09-10 | 2012-10-23 | Motorola Solutions, Inc. | System and method for managing power consumption in a device |
| US8680777B2 (en) * | 2012-03-27 | 2014-03-25 | Mks Instruments, Inc. | Versatile zero-voltage switch resonant inverter for industrial dielectric barrier discharge generator applications |
| CN102881150B (en) * | 2012-09-13 | 2014-10-29 | 厦门华联电子有限公司 | infrared remote control signal learning module and remote control device |
| CN203480395U (en) * | 2013-05-29 | 2014-03-12 | 高立 | Adjustable high-power water-cooling controller |
| CN103779951B (en) * | 2014-01-03 | 2015-12-30 | 无锡市产品质量监督检验中心 | Electric bicycle magnet coupled resonant type wireless charger |
| CN104377796B (en) * | 2014-11-14 | 2017-01-11 | 山东诺锐智能科技有限公司 | High-frequency pulse fast charging method and charging pile |
| CN206452135U (en) * | 2016-12-30 | 2017-08-29 | 上海东软载波微电子有限公司 | Electric bicycle charging system |
| CN106740238B (en) * | 2017-02-20 | 2023-08-25 | 华南理工大学 | Wireless charging circuit of electric automobile and control method thereof |
| CN107472055A (en) * | 2017-07-10 | 2017-12-15 | 昆明理工大学 | A kind of wireless charging device of Segway Human Transporter and its automatic control method for filling power-off |
| CN107947621B (en) * | 2017-12-15 | 2019-12-20 | 淮阴工学院 | High-power PWM grid-connected inverter circuit with multi-channel 96-pulse instantaneous value feedback |
| CN108110838B (en) * | 2017-12-28 | 2023-10-20 | 南京信息工程大学 | Shared electric bicycle wireless charging device and method based on high-frequency magnetic resonance coupling |
| CN207638375U (en) * | 2017-12-28 | 2018-07-20 | 南京信息工程大学 | Shared motor bicycle wireless charging device based on HF magnetic resonance coupling |
| CN108767995A (en) * | 2018-04-27 | 2018-11-06 | 山东时通运泰新能源科技有限公司 | A kind of electric vehicle mobile wireless electric energy charging system and its regulation and control method |
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