CN104319740A - Monitoring and protecting device for electric field coupling wireless charging system and method thereof - Google Patents
Monitoring and protecting device for electric field coupling wireless charging system and method thereof Download PDFInfo
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- CN104319740A CN104319740A CN201410543387.5A CN201410543387A CN104319740A CN 104319740 A CN104319740 A CN 104319740A CN 201410543387 A CN201410543387 A CN 201410543387A CN 104319740 A CN104319740 A CN 104319740A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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Abstract
The invention discloses a monitoring and protecting device for electric field coupling wireless charging system and method thereof, and the monitoring and protecting device comprises a wireless charging system, and a charged device parameter monitoring device for monitoring and protecting the wireless charging system, a charging device parameter monitoring device; at the start of the charging process, the charged device sends the nominal voltage, current and work temperature range of the storage battery to the charging device, during the charging process, the charging device detects the charging voltage, current and work temperature at real time and sends the information to the charging device. The charging device monitors the self work current, voltage and temperature, the controller on the charging device cuts off the charging circuit through the relay for guaranteeing the safety for charging system during the charging process and displaying reason on the display. The monitoring and protecting device for electric field coupling wireless charging system and method thereof has reliable and fast detection performance and guarantees the safe charging operation for the system.
Description
Technical field
The present invention relates to wireless charging field, particularly based on the wireless charging field of field coupled.
Background technology
In recent years, automobile gets more and more, and TRANSPOWORLD is more and more crowded, thus causes municipal pollution more and more serious, and the city haze weather of China happens occasionally.In order to reduce municipal pollution, electric motor car more and more promises to be urban transportation tool of future generation.But the charging problems of electric motor car, could not be satisfactorily resolved always.Conventional wired charging modes, on the one hand, the volume that on automobile, " tail " makes automobile limited in tow becomes more limited; On the other hand, there are some potential safety hazards in wired charging, the more important thing is, some female drivers feel painstaking to plug power line.At present, in order to overcome this difficulty, many researchers and engineer have studied many wireless charging methods.
In order to implement safety, efficiently wireless charging, must monitor to charging device with by the parameter of charging device, and feeding back to charging device, to make comprehensive state estimation, and making a policy.At present, conventional wireless charging method comprises the methods such as electromagnetic induction, magnetic resonance and microwave.These charging methods are all at a coil, and within the scope of coil alignment, electromagnetic field is very strong, implements radio wave wireless telecommunications more difficult, carries out transmission of wireless signals, be then easily subject to the impact of dust, fallen leaves, paper scrap etc. according to optical mode; And conventional wireless charging method, due to the existence of coil, makes the portion of energy of the resistance consumption in coil, its charge efficiency is difficult to improve.For this reason, applicant applies for a kind of based on the wireless charging method of field coupled and the patent of invention of device, the method and device can charging device and by charging device between carry out the wireless telecommunications of radio wave, and charging device with all be there is no coil by charging device, charge efficiency is higher, there is no electromagnetic radiation, charge safer.
This wireless charging method and device are equipped with wireless communication apparatus and voltage, electric current and temperature-detecting device, for being carried out parameter intercommunication by between charging device and charging device, and realize on the basis of these parameters being carried out wireless charging to different rated voltage by charging device on same charging device.
Although field coupled wireless charging method electromagnetic-radiation-free, efficiency are higher; if but there is anomaly in charging process; charging is caused to control; then may burn out storage battery, even life security incident occur; therefore need to carry out tight monitoring; for this reason, this patent proposes a kind of by the monitoring of the field coupled wireless charging system of charging device, charging device bidirectional test and protective device.
Summary of the invention
The object of the invention is to, provide a kind of for based in field coupled wireless charging process, guarantee the Monitoring and protection devices and methods therefor of wireless charging system safe operation.
To achieve these goals, the technical scheme that apparatus of the present invention adopt is:
The monitoring of field coupled wireless charging system and a protective device, is characterized in that, comprises wireless charging system, and for wireless charging system is monitored and protects by charging device parameter monitor device, charging device parameter monitor device, in described wireless charging system, utility grid voltage V1 connects the first rectifier bridge T1, first rectifier bridge T1 output plus terminal is connecting valve K1 and resistance R1 respectively, described K switch 1 is connected the first filter capacitor C1 with the other end of resistance R1, two inputs of the first filter capacitor C1 two ends shunt chopper, direct current is become medium frequency alternating current, first output of inverter connects the first charging device pole plate successively, first by charging device pole plate, second output of inverter connects the second charging device pole plate successively, second by charging device pole plate, described first by charging device pole plate, second is connected two inputs of the second rectifier bridge T2 respectively by the other end of charging device pole plate, described second rectifier bridge T
2two outputs the second filter capacitor C2 in parallel, battery tension V2 successively, describedly comprised microprocessor by charging device parameter monitor device, first voltage detecting, first current detecting, first temperature detection, first radio transmitting device, first normally closed relay, first Closing Switch, described microprocessor respectively with the first voltage detecting, first current detecting, first temperature detection, first radio transmitting device, first normally closed relay is connected, described first normally closed relay is connected with the first Closing Switch, microprocessor is used for multilevel iudge by the operation conditions of charging device parameter and control switch and the first normally closed relay state, obtain the first voltage detecting, first current detecting, the result of the first temperature detection, control data sends, described first voltage detecting, the first current detecting, the first temperature detection are respectively used to detect storage battery real work voltage, operating current and working temperature, and described first radio transmitting device is used for the second radio transmitting device rated voltage of storage battery, electric current and operating temperature range being sent to charging device, described charging device parameter monitor device comprises controller, second voltage detecting, second current detecting, second temperature detection, second radio transmitting device, second normally closed relay, second Closing Switch, liquid crystal display, alarm, described controller respectively with the second voltage detecting, second current detecting, second temperature detection, second radio transmitting device, second normally closed relay, liquid crystal display, alarm is connected, described second normally closed relay is connected with the second Closing Switch, controller is used for multilevel iudge by charging device parameter, the operation conditions of charging device parameter control switch and the second normally closed relay state, described second voltage detecting, the second current detecting, the second temperature detection are respectively used to detect the operating voltage of charging device self, operating current and working temperature.
Further, the described first chassis being installed in electric automobile by charging device pole plate, second by charging device pole plate, parallel to the ground, and battery lead plate is by insulating sleeve bag quilt.
Further, described radio transmitting device is used for wireless signal transfer of data, is wireless system, or photoelectric type, or ultrasonic wave mode, or wherein two kinds all install.
Further, described microprocessor is single-chip microcomputer, or digital processing unit, or Arm system.
Further, described microprocessor has the rated voltage of storage battery, rated charge stream and operating temperature range.
Further, described controller is Omron Programmable Logic Controller.
The technical scheme of method of the present invention is:
The monitoring of field coupled wireless charging system and a guard method, comprise the steps:
1), when charging process starts, by its wireless data transmission device, the rated voltage of storage battery, electric current and operating temperature range are sent to charging device by charging device, in charging process, charge in batteries voltage is detected in real time by charging device, electric current and working temperature, and it is sent to charging device by wireless data transmission device, simultaneously, microprocessor is to the electric current of monitoring and rated operational current comparison, working temperature and battery operating temperature are compared, also charging voltage and storage battery rated voltage are compared, if virtual voltage is less than or equal to rated voltage, and electric current is greater than rated current, then show to be occurred extremely by charging system, first normally closed relay disconnects, disconnect charging circuit, if by the permission operating temperature range of charging device working temperature higher than storage battery, same disconnection first normally closed relay, to prevent unexpected generation, this first normally closed relay must be pressed by artificial means and could again be closed by the Closing Switch on charging device,
2) charging device is only after have received and being sent charge request by charging device, just can Closing Switch K1, and starts inverter, otherwise inverter is in closed condition always; No matter in charged state, it is also non-charged state, charging device monitors self operating voltage, operating current and working temperature simultaneously, and monitoring result and charging device rated operational voltage, rated operational current and operating temperature range are compared, if one of them exceeds corresponding rated value, then disconnect the second normally closed relay; In addition, charging device carry out step 1 simultaneously) in comparison, if step 1) in anomaly occur, controller on charging device similarly turns off charging circuit by the second relay, to guarantee the safety of charging system in charging process, show fault type over the display simultaneously, and start alarm, the second normally closed relay on charging device, also only when pressing Closing Switch, could be closed.
Based on field coupled wireless charging method owing to not having coil, therefore can avoid the loss come compared with imperial palace stopband because existing in coil, charge efficiency is high. and, the method does not have electromagnetic exposure, therefore there is not electromagnetic radiation in this wireless charging system periphery, and concerning human body, its fail safe is good.
The present invention is as the supervisory control system of this wireless charging method and system, and its beneficial effect is:
The invention enables the wireless charging system based on field coupled safe and reliable; except breaking down or when exception; can accomplish fast to being carried out detection and effective protection by charging device and charging device; reduce outside the infringement of even avoiding bringing to this wireless charging system component because of the system failure; can also ensureing when breaking down, the health of wireless charging system periphery personnel or animal can not be injured.
Secondly, the present invention adopts double relay protecting control, can the safety of article and personnel in the electric motor car that brings because of electric leakage of timely and effective protection, further increases the fail safe of electric motor car.
Moreover the present invention adopts the mode of the front exchange message of charging, can avoid because being burnt storage battery by the change of charging device rated voltage, which increases monitoring high with the reliability of protection system.
In addition; telecommunication equipment is the most ripe, also relatively inexpensive wireless telecommunications system at present; compared to optical communication mode; the impact that the barrier such as dust, fallen leaves brings can be avoided; compared to conventional electromagnetic induction, magnetic resonance and microwave wireless charging method; this method adopt wireless communication mode charging device and by charging device between exchange monitoring parameter information time, the impact that can effectively avoid external electromagnetic field to bring, which further improves monitoring high with the reliability of protection system.
Accompanying drawing explanation
Fig. 1 is the charging device structural representation based on field coupled of the present invention;
Fig. 2 is of the present invention by the automatic monitoring on charging device and protection system theory diagram;
Fig. 3 is automatic monitoring on charging device of the present invention and protection system theory diagram;
Fig. 4 is the workflow diagram of automatic monitoring of the present invention and protection system.
In figure: 1 is inverter, 2 is the first charging device pole plate, and 3 is the second charging device pole plate, and 4 is first by charging device pole plate, and 5 is second by charging device pole plate, and 6 is insulating sleeve; V
1for utility grid, T
1be the first rectifier bridge, C
1be the first filter capacitor, V
2for storage battery, T
2be the second rectifier bridge, C
2be the second filter capacitor, R
1for resistance, K
1for switch.
Embodiment
For the execution mode of such scheme is described, the present invention is that example is set forth in conjunction with the automatic safety device of the wireless charging device based on field coupled of electric motor car.
Schematic diagram based on field coupled wireless charging device of the present invention as shown in Figure 1, V1 is utility grid voltage, it can be the three-phase electricity of 380V, also can be the two-phase electricity of 220V, it can also be special power transformation output voltage, T1 is the first rectifier bridge, C1 is the first filter capacitor, C1 obtains the less direct current of harmonic wave to the direct current filtering after T1 rectification, become medium frequency alternating current through inverter, two outputs of alternating current are connected with the charging circuit of electric automobile respectively by two different capacitive coupling.A battery lead plate of each electric capacity is on charging device, and be connected with inverter output end, another battery lead plate is arranged on the chassis of electric automobile, substantially parallel to the ground, is connected with the charging circuit of electric automobile, and battery lead plate is by insulating sleeve bag quilt.The charging circuit of electric automobile has the second rectifier bridge T2, the second filter capacitor C2 in being connected, and obtains direct voltage V2 and charges a battery.Because electric capacity leads to the characteristic of high frequency, resistance low frequency, the alternating current that inverter exports is coupled to the charging circuit of electric automobile by capacitive field.
Automatic monitoring and protection system comprise by the parameter detecting on charging device and protection part (as shown in Figure 2); and parameter monitoring on charging device and protection part (as shown in Figure 3); the former is arranged in electric motor car, and the latter is arranged on charging device.
For by the parameter detecting on charging device with protection part, its structural representation as shown in Figure 2, first voltage detecting detects the voltage at the second filter capacitor C2 two ends in accompanying drawing 1, first current detecting is the electric current of the second rectifier bridge T2 output in monitoring accompanying drawing 1, also can be the electric current of its input, if detect input, then use AC current sensor, if output, then use DC current sensor; First normally closed relay is connected in series the ac input end of T2 in fig. 1; First temperature detection is the temperature of monitoring storage battery; First radio transmitting device is then arranged between pole plate.The signal of the first voltage detecting, the first current detecting, the first temperature detection is all transferred to microprocessor, and microprocessor also controls the first normally closed relay and the first wireless transmitting system.The microprocessor of this part can be single-chip microcomputer (as C51 single-chip microcomputer), digital processing unit, also can be the embedded systems such as Arm.Closing Switch is used for closing normally closed normally closed relay by force, makes after maintenance, and system can rearming.
For the parameter detecting on charging device and protection part, its structural representation as shown in Figure 3, second voltage detecting detects the voltage (inverter two ends input voltage) at the first filter capacitor C1 two ends in accompanying drawing 1, second current detecting is the electric current of the first rectifier bridge T1 output in monitoring accompanying drawing 1, also can be the electric current of its input, if detect input, then use AC current sensor, if output, then use DC current sensor; Second normally closed relay is connected in series the ac input end of T1 in fig. 1; Second radio transmitting device is then arranged between pole plate.Compared with dividing with protection portion with by the parameter detecting on charging device, this part also has display screen and warning system, and this part central processing unit is controller (as Omron Programmable Logic Controller).This controller, except for obtaining except voltage, electric current and temperature signal, control second normally closed relay, display screen and warning system, goes back the inverter processed 1 in control chart 1.
The automatic monitoring of this wireless charging system and the workflow of protection system are as shown in Figure 4.By the monitoring on charging device and charging device and protective device parallel running.At the pole plate of wireless charging system to after having connected, charging circuit (by charging device) in electric motor car is by the rated current of electric storage battery, rated voltage and operating temperature range send to charging device, then the real work voltage of self is detected, operating current and battery temp, and send to charging device (now these values, these values receive by the second radio transmitting device), then microprocessor compares the result and corresponding rated value that record, if voltage is in normal range (NR), and electric current is excessive, or temperature is excessive, then cut off the first normally closed relay, otherwise, restart next time by charging circuit voltage on charging device, electric current and temperature detection.Charging device then at pole plate to after connecting, first the second radio transmitting device receives the nominal electric current of electromobile battery, rated voltage and operating temperature range, and is kept in the internal memory of own controller; Then operating voltage, operating current, the working temperature of charging device self circuit is detected, and receive the real work voltage of the storage battery that electric motor car sends, operating current and working temperature, perform comparison performed in microprocessor in electric motor car again, and self line operating voltages, electric current compare with rated value, if electric vehicle charging cord road powers on, positive pressure is normal, but electric current is excessive, or temperature is too high, then cut off the second normally closed relay; If self line voltage distribution is too high, or electric current is excessive, same cut off the second normally closed relay, and show fault type on a display screen, namely on earth by charging device power on flow through large, battery temp is too high or charging device overtension.Until after maintenance, after maintenance person presses the first Closing Switch and the second Closing Switch, the first normally closed relay and the second normally closed relay just close, and enter charging normal next time.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention by submitted to claims determination scope of patent protection.
Claims (7)
1. the monitoring of field coupled wireless charging system and a protective device, is characterized in that, comprise wireless charging system, and for wireless charging system is monitored and protects by charging device parameter monitor device, charging device parameter monitor device;
In described wireless charging system, line voltage V1 connects the input of the first rectifier bridge T1, first rectifier bridge T1 output plus terminal is connecting valve K1 and resistance R1 respectively, described K switch 1 is connected the first filter capacitor C1 with the other end of resistance R1, two inputs at described first filter capacitor C1 two ends shunt chopper (1), direct current is become medium frequency alternating current, first output of inverter (1) connects the first charging device pole plate (2) successively, first by charging device pole plate (4), second output of inverter (1) connects the second charging device pole plate (3) successively, second by charging device pole plate (5), described first by charging device pole plate (4), second is connected two inputs of the second rectifier bridge T2 respectively by the other end of charging device pole plate (5), described second rectifier bridge T
2two outputs the second filter capacitor C2 in parallel, battery tension V2 successively,
Describedly comprised microprocessor, the first voltage detecting, the first current detecting, the first temperature detection, the first radio transmitting device, the first normally closed relay, the first Closing Switch by charging device parameter monitor device; Described microprocessor respectively with the first voltage detecting, the first current detecting, the first temperature detection, the first radio transmitting device, the first normally closed relay are connected, described first normally closed relay is connected with the first Closing Switch, described microprocessor is used for multilevel iudge by the operation conditions of charging device parameter and control switch and the first normally closed relay state, obtain the result of the first voltage detecting, the first current detecting, the first temperature detection, control data sends; Described first voltage detecting, the first current detecting, the first temperature detection are respectively used to detect storage battery real work voltage, operating current and working temperature, and described first radio transmitting device is used for the second radio transmitting device rated voltage of storage battery, electric current and operating temperature range being sent to charging device;
Described charging device parameter monitor device comprises controller, the second voltage detecting, the second current detecting, the second temperature detection, the second radio transmitting device, the second normally closed relay, the second Closing Switch, liquid crystal display, alarm; Described controller respectively with the second voltage detecting, the second current detecting, the second temperature detection, the second radio transmitting device, the second normally closed relay, liquid crystal display, alarm are connected, and described second normally closed relay is connected with the second Closing Switch; Described controller is used for multilevel iudge by the operation conditions of charging device parameter, charging device parameter and control switch and the second normally closed relay state; Described second voltage detecting, the second current detecting, the second temperature detection are respectively used to detect the operating voltage of charging device self, operating current and working temperature.
2. the monitoring of field coupled wireless charging system according to claim 1 and protective device; it is characterized in that; described first chassis being installed in electric automobile by charging device pole plate (4), second by charging device pole plate (5); parallel to the ground, and battery lead plate is by insulating sleeve bag quilt.
3. the monitoring of field coupled wireless charging system according to claim 1 and protective device, is characterized in that, described radio transmitting device is used for wireless signal transfer of data; for wireless system; or photoelectric type, or ultrasonic wave mode, or wherein two kinds all install.
4. the monitoring of field coupled wireless charging system according to claim 1 and protective device, it is characterized in that, described microprocessor is single-chip microcomputer, or digital processing unit, or embedded system.
5. the monitoring of field coupled wireless charging system according to claim 4 and protective device, is characterized in that, described microprocessor has the rated voltage of storage battery, rated charge stream and operating temperature range.
6. the monitoring of field coupled wireless charging system according to claim 1 and protective device, it is characterized in that, described controller is Programmable Logic Controller, or embedded system.
7. the monitoring of field coupled wireless charging system and a guard method, is characterized in that, comprise the steps:
1), when charging process starts, by the first wireless data transmission device, the rated voltage of storage battery, electric current and operating temperature range are sent to charging device by charging device, in charging process, charge in batteries voltage is detected in real time by charging device, electric current and working temperature, and it is sent to charging device by wireless data transmission device, simultaneously, microprocessor is to the electric current of monitoring and rated operational current comparison, working temperature and battery operating temperature are compared, also charging voltage and storage battery rated voltage are compared, if virtual voltage is less than or equal to rated voltage, and electric current is greater than rated current, then show to be occurred extremely by charging system, first normally closed relay disconnects, disconnect charging circuit, if by the permission operating temperature range of charging device working temperature higher than storage battery, same disconnection first normally closed relay, to prevent unexpected generation, this first normally closed relay must be pressed by artificial means and could again be closed by the Closing Switch on charging device,
2) charging device is only after have received and being sent charge request by charging device, just can Closing Switch K1, and starts inverter, otherwise inverter is in closed condition always; No matter in charged state, it is also non-charged state, charging device monitors self operating voltage, operating current and working temperature simultaneously, and monitoring result and charging device rated operational voltage, rated operational current and operating temperature range are compared, if one of them exceeds corresponding rated value, then disconnect the second normally closed relay; In addition, charging device carry out step 1 simultaneously) in comparison, if step 1) in anomaly occur, controller on charging device similarly turns off charging circuit by the second relay, to guarantee the safety of charging system in charging process, show fault type over the display simultaneously, and start alarm, the second normally closed relay on charging device, also only when pressing Closing Switch, could be closed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410543387.5A CN104319740A (en) | 2014-10-14 | 2014-10-14 | Monitoring and protecting device for electric field coupling wireless charging system and method thereof |
| PCT/CN2014/089168 WO2016058214A1 (en) | 2014-10-14 | 2014-10-22 | Monitoring and protection apparatus and method for electric field coupling wireless charging system |
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|---|---|---|---|
| CN201410543387.5A CN104319740A (en) | 2014-10-14 | 2014-10-14 | Monitoring and protecting device for electric field coupling wireless charging system and method thereof |
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| CN104319740A true CN104319740A (en) | 2015-01-28 |
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| CN201410543387.5A Pending CN104319740A (en) | 2014-10-14 | 2014-10-14 | Monitoring and protecting device for electric field coupling wireless charging system and method thereof |
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| WO (1) | WO2016058214A1 (en) |
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| CN106154081A (en) * | 2016-06-21 | 2016-11-23 | 奇瑞汽车股份有限公司 | High-power wireless charging device detection equipment |
| WO2018103334A1 (en) * | 2016-12-09 | 2018-06-14 | 宁德时代新能源科技股份有限公司 | Fault detection method and device |
| CN110892600A (en) * | 2017-07-10 | 2020-03-17 | Abb瑞士股份有限公司 | Charging system |
| CN110892600B (en) * | 2017-07-10 | 2023-08-04 | Abb电动交通有限公司 | Charging system |
| CN110611353A (en) * | 2019-10-10 | 2019-12-24 | 密码精灵有限公司 | Charging control method and device of intelligent door lock and intelligent door lock |
| CN110970982A (en) * | 2019-12-31 | 2020-04-07 | 杭州简弈科技有限公司 | Power supply table with position-variable power supply unit |
| CN111060777A (en) * | 2020-03-18 | 2020-04-24 | 天津德沃尔智能科技有限公司 | Robot wireless charging monitoring module |
| CN114252782A (en) * | 2021-11-05 | 2022-03-29 | 中国航发南方工业有限公司 | Integrated form on-line monitoring device |
| CN114252782B (en) * | 2021-11-05 | 2024-01-26 | 中国航发南方工业有限公司 | Integrated on-line monitoring device |
| CN115508736A (en) * | 2022-11-15 | 2022-12-23 | 智洋创新科技股份有限公司 | Direct-current power supply online charging performance testing system and method based on big data |
| CN115508736B (en) * | 2022-11-15 | 2023-02-28 | 智洋创新科技股份有限公司 | Direct-current power supply online charging performance testing system and method based on big data |
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