CN203368112U - Accumulator wireless charging minimal access device - Google Patents
Accumulator wireless charging minimal access device Download PDFInfo
- Publication number
- CN203368112U CN203368112U CN2013202894813U CN201320289481U CN203368112U CN 203368112 U CN203368112 U CN 203368112U CN 2013202894813 U CN2013202894813 U CN 2013202894813U CN 201320289481 U CN201320289481 U CN 201320289481U CN 203368112 U CN203368112 U CN 203368112U
- Authority
- CN
- China
- Prior art keywords
- energy
- power
- storage battery
- high frequency
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an accumulator wireless charging minimal access device, comprising a high frequency inverter power supply, an energy emitting system, an energy receiving system, an energy coupling coil, a load side, a power detection circuit and a battery energy management system, wherein the energy emitting system is in resonant coupling with the energy receiving system, the load side includes a rectifying and voltage stabilizing system, an accumulator and a power change type load; the high frequency inverter power supply adjusts the electric energy output power according to the real-time power of the power change type load and starts the electric energy output according to the relationship between the real-time impedance value of the accumulator and the given charging frequency, so as to provide energy to the energy emitting system. The accumulator wireless charging minimal access device is simple in principle and convenient to adjust, can be applied to minimal access adjustment methods after various types of loads access a wireless electric energy transmission system, and can basically solve the problem about minimal access technology of the wireless electric energy transmission system.
Description
Technical field
The utility model relates to a kind of charge power can be regulated and the minimum access device of the storage battery wireless charging of the disposable setting of charge frequency in real time according to the variation of bearing power, input wireless power transmission technology.
Background technology
In recent years, along with people's living standard improve constantly and explore intramundane gradually deeply, people have also had new requirement to transmission means and the transmission quality of electric energy.Traditional delivery of electrical energy mainly by wire or conductor directly contact carry out, spark, skimming wear, the carbon deposit that contact produces involves the energized conductor series of problems that brought such as exposed.Wireless power transmission is a kind of technology of utilizing the wireless radio transmission electric energy, by Ni Gula tesla, proposed the earliest, with traditional delivery of electrical energy mode, compare, there do not is the direct connection of electricity in the process of wireless power transmission between power supply and electricity consumption, bare exposed conductor and contact sparking have been avoided, have and use the advantages such as safe, convenient, thereby be subject to numerous research workers' concern and attention.The wireless power transmission technical applications is very extensive, particularly in military affairs, mine, under water, be with a wide range of applications under the special and adverse circumstances such as medical treatment, oil, traffic.Therefore, the research for the wireless power transmission technology has very profound significance.
At present, along with the continuous intensification of wireless power transmission technical research and constantly widening of related application field thereof, increasing scientist has given enough affirming to technique.But, due to the particularity of radio energy transmission system transmission characteristic, when load accesses, the system resonance frequency can change, i.e. frequency drift thereupon.Therefore reduce after the load access the particularly impact of power output of system transmission performance, be main purpose of the present utility model as far as possible.The utility model adopts the minimum access technology of wireless power transmission, is directed to the load of power real-time change, adopts storage battery as energy transfer standing posture wireless power supply system, but the long-time steady operation of proof load.Yet, both at home and abroad to the frequency drift, the power that after the storage battery access, radio energy transmission system are brought, the problem such as can't export and never have simple and effective solution.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of storage battery wireless charging minimum access device, guarantees the wireless charging of storage battery and relies on the long-time steady operation of battery-driven low-power load.
Technical scheme: for achieving the above object, the technical solution adopted in the utility model is:
The minimum access device of a kind of storage battery wireless charging, comprise that high frequency inverter, energy emission system, energy accept system, Energy Coupling coil, load-side, power-sensing circuit and battery management system (bms), described energy emission system and the coupling of energy receiving system resonant mode, described load-side comprises rectifying and voltage-stabilizing system, storage battery and the load of power change type;
Described energy emission system is for generation of the high-frequency electromagnetic energy field;
The high-frequency electromagnetic energy field that described energy receiving system produces for the received energy emission system, and be translated into high-frequency electrical energy;
After described Energy Coupling coil transforms the energy receiving system, high-frequency electrical energy is coupled to load-side;
Between described Energy Coupling coil and rectifying and voltage-stabilizing system, by the characteristic coaxial cable, be connected, described Energy Coupling coil sends electric energy to the rectifying and voltage-stabilizing system, described rectifying and voltage-stabilizing system is carried out rectifying and voltage-stabilizing and sends storage battery to the electric energy of input, and described storage battery is power change type load supplying;
Described battery management system (bms) is detected the real-time resistance value of storage battery, and testing result is fed back to high frequency inverter;
Described power-sensing circuit is detected the realtime power of power change type load, and feeds back to high frequency inverter;
Described high frequency inverter is adjusted the electric energy power output, is started electric energy according to the relation between the charge frequency of the real-time resistance value of storage battery and setting and export according to the realtime power of power change type load, for the energy emission system provides energy.
In said apparatus, adopted the real-time dynamic adjustments of high frequency inverter power, charge frequency presets and three kinds of modes of characteristic coaxial cable in conjunction with realizing minimum access, accumulator electric-quantity is maintained on artificial set point all the time, guaranteed the long-time steady operation of load.
Described storage battery is the impedance spacer assembly between radio energy transmission system and actual loading, and the minimum access device of the storage battery wireless charging that this case provides can guarantee the wireless charging of storage battery and rely on the long-time steady operation of battery-driven low-power load.
Described energy emission system and energy receiving system all can be designed to by adjustable vacuum ceramic electric capacity and pound the structure that the spiral hollow copper pipe is composed in series more; Preferably, described energy emission system is composed in series with high frequency Tao Jie tuning capacitance by energy transmitting coil and transmission, by adjusting, sends the resonance frequency by high frequency Tao Jie tuning capacitance adjusting energy transmitting system; Described energy receiving system is composed in series with high frequency Tao Jie tuning capacitance by energy receiving coil and reception, by adjusting, receives the resonance frequency by high frequency Tao Jie tuning capacitance adjusting energy receiving system; During work, the resonance frequency of the frequency of charge frequency, high frequency inverter, energy transmitting system is identical with the resonance frequency of energy receiving system.The adjusting of same frequency, can make between energy emission system and energy receiving system to produce ultrahigh speed electromagnetic coupled field, by resonant mode magnetic coupling wireless power transmission, makes high-power high-frequency energy after amplification supply load efficiently.
Described battery management system (bms), can and show voltage and the dump energy of storage battery by Real-Time Monitoring, by being contrasted with the battery impedance characteristic curve, draws the real-time resistance value of storage battery.Because there is corresponding relation in the resistance value of charge frequency and storage battery, therefore can set as follows charge frequency: set charge frequency corresponding with the storage battery datum mark, described storage battery datum mark is chosen as follows: at first select some sections the mildest on the impedance characteristic of storage battery, get the median of each section as a storage battery datum mark.Due to charge power, much larger than bearing power, near the storage battery datum mark, impedance operator is mild simultaneously, therefore can meet the requirement that storage battery wireless charging power is greater than the load power demand, more than guaranteeing that accumulator electric-quantity maintains the storage battery datum mark.
During the use of characteristic coaxial cable, in order to shield after the load-side access the impedance influences of radio energy transmission system, preferred, the internal resistance of described characteristic coaxial cable equates with the internal resistance of Energy Coupling coil prime two-port network, further realizes that minimum accesses.
The internal resistance of Energy Coupling coil prime two-port network (impedance operator of wireless charging system equivalent source network) can be analyzed by the network impedance analyzer, get final product the coaxial nature cable of selector assembly system impedance matching by the result of analyzing, guarantee that storage battery is minimum on original radio energy transmission system transmission performance impact after accessing.
Preferably, described high frequency inverter is duty ratio adjustable high-frequency inverter, by DSP, regulates the electric energy power output adjustment that duty ratio realizes high frequency inverter.While specifically coming, described duty ratio adjustable high-frequency inverter is full bridge inverse conversion power, the variable PWM ripple by the DSP output duty cycle, control the break-make of the MOSFET of inversion full-bridge, can control the power output size of power supply, itself and power-sensing circuit form closed-loop control, and the signal that power-sensing circuit is provided and PWM ripple are contrasted, can change in real time the power output of high frequency inverter, meet the requirement of system normal operation.
Preferably, described power-sensing circuit comprises many times of amplifiers of digital power meter, signal deteching circuit, signal and the analog to digital conversion circuit that signal connects successively, described digital power meter is connected with the load of power change type, and analog-digital conversion circuit as described is connected with high frequency inverter.
Described storage battery is four port storage batterys, and wherein a pair of port is charging port, and another is the power supply port to port; Can in charging, be that load is powered.Described rectifying and voltage-stabilizing system is mainly used in the electric energy of input is carried out to rectifying and voltage-stabilizing, with the electric energy of the required grade of matched batteries, guarantees normal, the reliable charging of storage battery.
Preferably, described high frequency inverter power output is more than 5 times of power change type bearing power.
Preferably, described charge frequency is once set before using this device is each, avoids in the course of the work, to the adjusting of charge frequency, guaranteeing the steady operation of whole device.
Beneficial effect: the minimum access device of the storage battery wireless charging that the utility model provides, have following advantage: 1, principle is simple, easy to adjust, may extend to the minimum access method of adjustment after the polytype load accesses radio energy transmission system, substantially solved the difficult problem of radio energy transmission system about minimum access technology; 2, simple in structure, can, according to the storage battery selecting frequency datum mark of different model and electric pressure, to charge frequency, carry out disposable setting; Frequency setting is simple, can guarantee that the variation of battery impedance characteristic is little on the impact of system resonance frequency when charging, more than can guaranteeing that accumulator electric-quantity remains at selected datum mark, and the also normal operation of proof load simultaneously; 3, adopt power tracking adjusting, the disposable setting of frequency and combine with three kinds of methods of impedance operator cable shield, normal, steady operation after storage battery accesses radio energy transmission system have been guaranteed, having solved the problems such as the power brought due to the impedance mismatch caused after the load access can't transmit, frequency drift, is the simple method of adjustment of the minimum connecting system of a kind of wireless power transmission; 4, adopt electromagnetic resonance formula radio energy transmission system to carry out isolated transmission to electric energy, fail safe is good, and transmission range is long, and efficiency is high, and range of application is wider.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The structural representation that Fig. 2 is power-sensing circuit;
Fig. 3 is that resonance frequency is set schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Be illustrated in figure 1 the minimum access device of a kind of storage battery wireless charging, comprise that high frequency inverter, energy emission system, energy accept system, Energy Coupling coil, load-side, power-sensing circuit, network impedance analyzer and battery management system (bms), described load-side comprises rectifying and voltage-stabilizing system, storage battery and the load of power change type.Below with regard to all parts, described in detail.
Described energy emission system and the coupling of energy receiving system resonant mode, described energy emission system is for generation of the high-frequency electromagnetic energy field, and described energy receiving system is used for the high-frequency electromagnetic energy field that the received energy emission system produces, and is translated into high-frequency electrical energy.Described energy emission system and energy receiving system all can be designed to by adjustable vacuum ceramic electric capacity and pound the structure that the spiral hollow copper pipe is composed in series more; Preferably, described energy emission system is composed in series with high frequency Tao Jie tuning capacitance by energy transmitting coil and transmission, by adjusting, sends the resonance frequency by high frequency Tao Jie tuning capacitance adjusting energy transmitting system; Described energy receiving system is composed in series with high frequency Tao Jie tuning capacitance by energy receiving coil and reception, by adjusting, receives the resonance frequency by high frequency Tao Jie tuning capacitance adjusting energy receiving system; During work, the resonance frequency of the frequency of charge frequency, high frequency inverter, energy transmitting system is identical with the resonance frequency of energy receiving system.The adjusting of same frequency, can make between energy emission system and energy receiving system to produce ultrahigh speed electromagnetic coupled field, by resonant mode magnetic coupling wireless power transmission, makes high-power high-frequency energy after amplification supply load efficiently.
Described network impedance analyzer is analyzed the internal resistance of Energy Coupling coil prime two-port network, get final product the coaxial nature cable of selector assembly system impedance matching by the result of analyzing, guarantee that storage battery is minimum on original radio energy transmission system transmission performance impact after accessing.Here select the internal resistance of coaxial cable to equate with the internal resistance of Energy Coupling coil prime two-port network.
After described Energy Coupling coil transforms the energy receiving system, high-frequency electrical energy is coupled to load-side; Between described Energy Coupling coil and rectifying and voltage-stabilizing system, by the characteristic coaxial cable, be connected, described Energy Coupling coil sends electric energy to the rectifying and voltage-stabilizing system; Described rectifying and voltage-stabilizing system, for the electric energy of input is carried out to rectifying and voltage-stabilizing, with the electric energy of the required grade of matched batteries, guarantees normal, the reliable charging of storage battery; Described storage battery is power change type load supplying, and described storage battery is four port storage batterys, and wherein a pair of port is charging port, and another is the power supply port to port, can in charging, be that load is powered.
Described battery management system (bms), to by Real-Time Monitoring and show voltage and the dump energy of storage battery, by being contrasted with the battery impedance characteristic curve, draws the real-time resistance value of storage battery, and real-time resistance value is fed back to high frequency inverter; Because there is corresponding relation in the resistance value of charge frequency and storage battery, can set as follows charge frequency: set charge frequency corresponding with the storage battery datum mark, described storage battery datum mark is chosen as follows: as shown in Figure 3, at first select some sections the mildest on the impedance characteristic of storage battery, get the median of each section as a storage battery datum mark.Due to charge power, much larger than bearing power, near the storage battery datum mark, impedance operator is mild simultaneously, therefore can meet the requirement that storage battery wireless charging power is greater than the load power demand, more than guaranteeing that accumulator electric-quantity maintains the storage battery datum mark.Described charge frequency is once set before the each use of this device.
As shown in Figure 2, described power-sensing circuit comprises many times of amplifiers of digital power meter, signal deteching circuit, signal and the analog to digital conversion circuit that signal connects successively, described digital power meter is connected with the load of power change type, and analog-digital conversion circuit as described is connected with high frequency inverter.Power-sensing circuit is detected the realtime power of power change type load, and feeds back to high frequency inverter.
Described high frequency inverter according to the realtime power of power change type load adjust the electric energy power output, (when real-time resistance value is in the corresponding scope of storage battery datum mark, the startup electric energy is exported to start electric energy output according to the relation between the charge frequency of the real-time resistance value of storage battery and setting, otherwise do not start electric energy output), for the energy emission system provides energy.Described high frequency inverter is duty ratio adjustable high-frequency inverter, by DSP, regulates the electric energy power output adjustment that duty ratio realizes high frequency inverter.While specifically coming, described duty ratio adjustable high-frequency inverter is full bridge inverse conversion power, the variable PWM ripple by the DSP output duty cycle, control the break-make of the MOSFET of inversion full-bridge, can control the power output size of power supply, itself and power-sensing circuit form closed-loop control, and the signal that power-sensing circuit is provided and PWM ripple are contrasted, can change in real time the power output of high frequency inverter, meet the requirement of system normal operation.
This case adopts storage battery to use the direct power supply of electric loading as small-power, is a kind of for guaranteeing the novel system of the normal steady operation of original system after storage battery access radio energy transmission system.At first, detect Energy Coupling coil prime two port impedance characteristic of alternating currents of former radio energy transmission system by the network impedance analyzer, select suitable characteristic coaxial transmission cable to access load; Secondly, under the prerequisite of grasping the charge in batteries impedance characteristic, select the mildest one section of its impedance characteristic, get the resonant frequency point of its median point as radio energy transmission system, the disposable charge frequency that arranges, simple, convenient, and reliable; Finally, by power-sensing circuit, bearing power is fed back to high frequency inverter with the form of digital signal, make the real-time regulation output power of power supply, guaranteed the normal operation of load.This system transmission frequency can change arbitrarily according to the selection of storage battery datum mark, generally in 10k～1MHz scope.
There are following difference in this case and existing radio energy transmitting device: the storage battery of 1, usining is used the direct power supply of electric loading as small-power, is a kind of to guaranteeing the novel radio charging system of the normal steady operation of original system after storage battery access radio energy transmission system; 2, the power output of high frequency inverter changes and forms closed-loop control and adjusting in real time by power-sensing circuit and bearing power, and after having guaranteed that bearing power changes, output power of power supply enough makes the load normal operation; 3, adopt power adjustments, frequency is once set and three kinds of Combination of Methods of characteristic coaxial cable shield reach after storage battery access radio energy transmission system the purpose that also can make original radio energy transmission system normal operation; 4, adopt the electromagnetic resonance coupled modes to carry out the wireless transmission of energy, the induction coupling of logical Energy Coupling coil and energy receiving coil in the energy receiving system simultaneously, large-current electric in the energy receiving coil can be isolated and drawn, reduced that load and energy receiving coil directly are connected to brought load matched and the problem such as frequency is unstable, avoided the impact on transmission range and the power output of radio energy transmission system.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (8)
1. the minimum access device of a storage battery wireless charging, it is characterized in that: comprise that high frequency inverter, energy emission system, energy accept system, Energy Coupling coil, load-side, power-sensing circuit and battery management system (bms), described energy emission system and the coupling of energy receiving system resonant mode, described load-side comprises rectifying and voltage-stabilizing system, storage battery and the load of power change type;
Described energy emission system is for generation of the high-frequency electromagnetic energy field;
The high-frequency electromagnetic energy field that described energy receiving system produces for the received energy emission system, and be translated into high-frequency electrical energy;
After described Energy Coupling coil transforms the energy receiving system, high-frequency electrical energy is coupled to load-side;
Between described Energy Coupling coil and rectifying and voltage-stabilizing system, by the characteristic coaxial cable, be connected, described Energy Coupling coil sends electric energy to the rectifying and voltage-stabilizing system, described rectifying and voltage-stabilizing system is carried out rectifying and voltage-stabilizing and sends storage battery to the electric energy of input, and described storage battery is power change type load supplying;
Described battery management system (bms) is detected the real-time resistance value of storage battery, and testing result is fed back to high frequency inverter;
Described power-sensing circuit is detected the realtime power of power change type load, and feeds back to high frequency inverter;
Described high frequency inverter is adjusted the electric energy power output, is started electric energy according to the relation between the charge frequency of the real-time resistance value of storage battery and setting and export according to the realtime power of power change type load, for the energy emission system provides energy.
2. the minimum access device of storage battery wireless charging according to claim 1, it is characterized in that: described energy emission system is composed in series with high frequency Tao Jie tuning capacitance by energy transmitting coil and transmission, by adjusting, sends the resonance frequency by high frequency Tao Jie tuning capacitance adjusting energy transmitting system; Described energy receiving system is composed in series with high frequency Tao Jie tuning capacitance by energy receiving coil and reception, by adjusting, receives the resonance frequency by high frequency Tao Jie tuning capacitance adjusting energy receiving system; During work, the resonance frequency of the frequency of charge frequency, high frequency inverter, energy transmitting system is identical with the resonance frequency of energy receiving system.
3. the minimum access device of storage battery wireless charging according to claim 1, it is characterized in that: the internal resistance of described characteristic coaxial cable equates with the internal resistance of Energy Coupling coil prime two-port network.
4. the minimum access device of storage battery wireless charging according to claim 1, it is characterized in that: described high frequency inverter is duty ratio adjustable high-frequency inverter, by DSP, regulates the electric energy power output adjustment that duty ratio realizes high frequency inverter.
5. the minimum access device of storage battery wireless charging according to claim 1, it is characterized in that: described power-sensing circuit comprises many times of amplifiers of digital power meter, signal deteching circuit, signal and the analog to digital conversion circuit that signal connects successively, described digital power meter is connected with the load of power change type, and analog-digital conversion circuit as described is connected with high frequency inverter.
6. the minimum access device of storage battery wireless charging according to claim 1, it is characterized in that: described storage battery is four port storage batterys, and wherein a pair of port is charging port, another is the power supply port to port.
7. the minimum access device of storage battery wireless charging according to claim 1, it is characterized in that: described high frequency inverter power output is more than 5 times of power change type bearing power.
8. the minimum access device of storage battery wireless charging according to claim 1, it is characterized in that: also comprise the network impedance analyzer, described network impedance analyzer is analyzed the internal resistance of Energy Coupling coil prime two-port network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202894813U CN203368112U (en) | 2013-05-23 | 2013-05-23 | Accumulator wireless charging minimal access device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202894813U CN203368112U (en) | 2013-05-23 | 2013-05-23 | Accumulator wireless charging minimal access device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368112U true CN203368112U (en) | 2013-12-25 |
Family
ID=49815830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202894813U Expired - Fee Related CN203368112U (en) | 2013-05-23 | 2013-05-23 | Accumulator wireless charging minimal access device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203368112U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312016A (en) * | 2013-05-23 | 2013-09-18 | 东南大学 | Storage battery wireless charging minimum connecting device |
| WO2017198203A1 (en) * | 2016-05-19 | 2017-11-23 | Chengdu Yichong Wireless Power Technology Co.,Ltd | Wireless charging systems and methods with adaptive efficiency optimization |
| CN108075575A (en) * | 2016-11-15 | 2018-05-25 | 天津中德应用技术大学 | It is wirelessly transferred electric power supply system for subway and its charging method |
| CN115325674A (en) * | 2022-10-13 | 2022-11-11 | 国网山东省电力公司东营供电公司 | Power supply system of cold and hot air supply device for power distribution operation |
-
2013
- 2013-05-23 CN CN2013202894813U patent/CN203368112U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312016A (en) * | 2013-05-23 | 2013-09-18 | 东南大学 | Storage battery wireless charging minimum connecting device |
| CN103312016B (en) * | 2013-05-23 | 2015-12-02 | 东南大学 | The minimum access device of a kind of storage battery wireless charging |
| WO2017198203A1 (en) * | 2016-05-19 | 2017-11-23 | Chengdu Yichong Wireless Power Technology Co.,Ltd | Wireless charging systems and methods with adaptive efficiency optimization |
| CN108075575A (en) * | 2016-11-15 | 2018-05-25 | 天津中德应用技术大学 | It is wirelessly transferred electric power supply system for subway and its charging method |
| CN108075575B (en) * | 2016-11-15 | 2023-12-19 | 天津中德应用技术大学 | Wireless transmission subway power supply system and charging method thereof |
| CN115325674A (en) * | 2022-10-13 | 2022-11-11 | 国网山东省电力公司东营供电公司 | Power supply system of cold and hot air supply device for power distribution operation |
| CN115325674B (en) * | 2022-10-13 | 2022-12-30 | 国网山东省电力公司东营供电公司 | Power supply system of cold and hot air supply device for power distribution operation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103312016B (en) | The minimum access device of a kind of storage battery wireless charging | |
| Chen et al. | A comparative study of SS and LCC-S compensation topology of inductive power transfer systems for EV chargers | |
| CN107618388B (en) | Wireless charging system of electric automobile | |
| CN203368112U (en) | Accumulator wireless charging minimal access device | |
| CN103346675B (en) | High-power cascading electromagnetic emitter system with voltage continuously adjustable in wide range | |
| CN109895640A (en) | A kind of electric car wireless charging two stage control system and control method | |
| CN105262154A (en) | Wireless charging system for underwater robot and control method of wireless charging system | |
| CN107512176B (en) | Tramcar dynamic wireless power supply system and efficiency optimization control method thereof | |
| CN109831013A (en) | A kind of constant current-constant pressure pair side automatic switch-over circuit and resonance type wireless electric energy transmission system | |
| CN201365144Y (en) | Inductive power supplying device | |
| CN104967153A (en) | Electromagnetic induction wireless charging system | |
| CN108923549A (en) | Magnet coupled resonant type wireless energy transmission system and its maximum power point control method | |
| CN105186714A (en) | Low-power wireless charging circuit topological structure | |
| CN104779716B (en) | Low-power multi-load wireless powered adaptive DC voltage stabilizing system | |
| CN112421792B (en) | Wireless charging system and control method for constant-current/constant-voltage charging optimization | |
| CN113540621A (en) | Sine alternating-current low-temperature self-heating device and method for lithium battery | |
| CN209860675U (en) | Magnetic coupling resonant wireless power transmission system | |
| CN202178709U (en) | High-power steady emitter with voltage continuously adjustable within wide range | |
| WO2023226162A1 (en) | Sustainable wireless power supply system for online monitoring device of high-voltage transmission line | |
| CN205051447U (en) | Wireless charging circuit topological structure of low -power | |
| CN103647468A (en) | High-frequency conversion circuit of resonant wireless power transmission system | |
| CN108599389A (en) | A kind of implantation type wireless electric energy transmitting device | |
| CN204243917U (en) | Based on the device of the magnetic coupling resonance wireless energy transfer of repeat circuit | |
| CN103207411A (en) | Electromagnetic exploration transmitting system based on super capacitor energy storage | |
| CN203433077U (en) | Fault indicator of distribution network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20160523 |