CN103269114B - Bi-directional charging device and system - Google Patents
Bi-directional charging device and system Download PDFInfo
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Abstract
The invention discloses a bi-directional charging device and system and belongs to the field of charging. The bi-directional charging device comprises a first rectification inverter, a first wireless receiving and dispatching module, a wired charging module and a first control module. The first rectification inverter is used for inverting first direct currents output by a power storage device to obtain first alternating currents, or used for rectifying received second alternating currents or third alternating currents to obtain second direct currents or third direct currents and outputting the second direct currents or the third direct currents to the power storage device. The first wireless receiving and dispatching module is used for converting the first alternating currents to first electromagnetic waves and sending the first electromagnetic waves, or used for receiving second electromagnetic waves and converting the second electromagnetic waves to the second alternating currents. The wired charging module is used for outputting the first alternating currents to a power supply or used for outputting the third alternating currents transmitted by the power supply to the first rectification inverter. The bi-directional charging device achieves a bi-directional charging function.
Description
Technical field
The present invention relates to field of power electronics, particularly the two-way charging device of one and system.
Background technology
Electric automobile refers to on-vehicle battery to be power, drives the vehicle of wheels travel with motor.Electric automobile is less relative to orthodox car to environmental impact because of it, has good development prospect.
Because electric automobile provides power by on-vehicle battery, therefore need to charge to on-vehicle battery.Along with the progress of charging technique, except traditional wired charging technique, wireless charging technology is also applied on electric automobile, is arranged on the wireless charging dispensing device of parking lot or other position, the electric energy conversion exported by power supply is electromagnetic wave, and sends this electromagnetic wave; To be located on electric automobile also correspondence to be provided with wireless charging receiver and to receive above-mentioned electromagnetic wave, and this electromagnetic wave to be converted into electric energy input on-vehicle battery.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Along with the development of electric vehicle engineering, energy exchange can be carried out as an important electric energy storage device and electrical network (power supply) in electric automobile vehicle mounted electric pond, at some in particular cases, electric automobile vehicle mounted electric pond likely can be needed to be grid charging, but above-mentioned charging modes (comprising wired charging and wireless charging) all only possesses unidirectional charge function, cannot realize the two-way charging between electric automobile vehicle mounted electric pond and electrical network.
Summary of the invention
In order to solve in prior art the problem of the two-way charging that cannot realize between electric automobile vehicle mounted electric pond and electrical network, embodiments provide a kind of two-way charging device and system.Described technical scheme is as follows:
On the one hand, embodiments provide a kind of two-way charging device, be applicable to carry out energy exchange between vehicle-mounted electric energy storage device and power supply, described device comprises:
First rectification adverser, the first direct current for exporting electric energy storage device carries out inversion, obtain the first alternating current, or, rectification is carried out to the second alternating current received or the 3rd alternating current, obtain the second direct current or the 3rd direct current, described second direct current or described 3rd direct current are outputted to described electric energy storage device;
First radio receiving transmitting module, for described first alternating current exported by described first rectification adverser, is converted to the first electromagnetic wave and sends described first electromagnetic wave, or, receive the second electromagnetic wave, and described second electromagnetic wave is converted to described second alternating current;
Wired charging module, for described first alternating current exported by described first rectification adverser, exports power supply to, or, export described 3rd alternating current of described power delivery to described first rectification adverser;
First control module, switches in inversion and rectification two states for controlling described first rectification adverser, and one that controls in described first radio receiving transmitting module and described wired charging module in running order; When controlling described first rectification adverser and being operated in rectification state, control described first radio receiving transmitting module and receive described second electromagnetic wave, or, control described wired charging module and export described 3rd alternating current to described first rectification adverser; When controlling described first rectification adverser and being operated in inverter mode, control described first radio receiving transmitting module and send described first electromagnetic wave, or, control described wired charging module and export described first alternating current to power supply.
In a kind of implementation of the embodiment of the present invention, described first radio receiving transmitting module comprises:
First coil L1, the first electric capacity C1, the first K switch 1, second coil L2, the second electric capacity C2 and second switch K2, described first coil L1 and described first electric capacity C1 connects, described second coil L2 and described second electric capacity C2 is in parallel, described first K switch 1 and described first coil L1 connect, described second switch K2 and described second coil L2 connects, and described first control module is also for controlling the switch motion of described first K switch 1 and described second switch K2; Or,
Described first radio receiving transmitting module comprises: tertiary coil L3, the 3rd electric capacity C3 and the 4th electric capacity C4, connects after described tertiary coil L3 and described 4th electric capacity C4 parallel connection with described 3rd electric capacity C3.
In the another kind of implementation of the embodiment of the present invention, described device also comprises: be connected to the first two-way DC converter between described electric energy storage device and described first rectification adverser.
In the another kind of implementation of the embodiment of the present invention, described first control module, also for according to radio transmission efficiency, controls the power output of described first two-way DC converter.
In the another kind of implementation of the embodiment of the present invention, described first control module comprises the first digital signal processor and the first wireless communication unit, and described first wireless communication unit is electrically connected with described first digital signal processor.
In the another kind of implementation of the embodiment of the present invention, described wired charging module comprises: the filter circuit be electrically connected for the single-phase or three-phase selection circuit that is connected with single-phase or three phase mains and or three-phase selection circuit single-phase with described.
On the other hand, the embodiment of the present invention additionally provides a kind of two-way charging system, and described system comprises:
Two-way charging device as above;
Power transfer module, for the output of described power supply is converted to the 4th direct current, or, the 5th direct current is changed, and the 5th direct current after conversion is outputted to described power supply;
Second rectification adverser, carries out inversion for described 4th direct current exported described power transfer module, obtains the 4th alternating current, or, rectification is carried out to the 5th alternating current received, obtains described 5th direct current, and described 5th direct current is outputted to described power transfer module;
Second radio receiving transmitting module, for described 4th alternating current exported by described second rectification adverser, is converted to the second electromagnetic wave and sends described second electromagnetic wave, or, receive the first electromagnetic wave, and described first electromagnetic wave is converted to described 5th alternating current;
Second control module, switches in inversion and rectification two states for controlling described second rectification adverser;
Described second control module and described first control module wireless connections.
In a kind of implementation of the embodiment of the present invention, described second radio receiving transmitting module comprises:
4th coil L4, the tenth electric capacity C6, twelvemo close K3, the 5th coil L5, the 11 electric capacity C7 and the 13 K switch 4, described 4th coil L4 and described tenth electric capacity C6 connects, described 5th coil L5 and described 11 electric capacity C7 is in parallel, described twelvemo pass K3 and described 4th coil L4 connects, described 13 K switch 4 and described 5th coil L5 connect, and described second control module also closes the switch motion of K3 and described 13 K switch 4 for controlling described twelvemo; Or,
Described second radio receiving transmitting module comprises: the 6th coil L6, the 12 electric capacity C8 and the 13 electric capacity C9, connects after described 6th coil L6 and described 13 electric capacity C9 parallel connection with described 12 electric capacity C8.
In the another kind of implementation of the embodiment of the present invention, described power transfer module comprises: the second two-way DC converter and single-phase or three phase rectifier inverter, and the output of described second two-way DC converter output that is single-phase with described or three phase rectifier inverter is connected with the input of described second rectification adverser respectively.
In the another kind of implementation of the embodiment of the present invention, described second control module, also for according to radio transmission efficiency, controls the power output of described second two-way DC converter or described single-phase or three phase rectifier inverter.
In the another kind of implementation of the embodiment of the present invention, described second control module, also for according to radio transmission efficiency, controls the power output of described second two-way DC converter.
In the another kind of implementation of the embodiment of the present invention, described second control module comprises the second digital signal processor and the second wireless communication unit, and described second wireless communication unit is electrically connected with described second digital signal processor.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
By adopting the first control module, the first rectification adverser is controlled at inverter mode, the first rectification adverser is made to carry out inversion to the first direct current that electric energy storage device exports, obtain the first alternating current, first control module controls the first radio receiving transmitting module simultaneously and the first alternating current is converted to the first electromagnetic wave and sends the first electromagnetic wave, thus can provide energy for power supply; Or, adopt the first control module to control the first radio receiving transmitting module and receive the second electromagnetic wave, and the second electromagnetic wave is converted to the second alternating current, first rectification adverser controls at rectification state by the first control module simultaneously, the first rectification adverser is made to carry out rectification to the second alternating current, obtain the second direct current, and the second direct current is outputted to electric energy storage device, thus the energy that power supply provides can be received; Achieve two-way charge function, this device also comprises wired charging module simultaneously, thus achieves the combination of wireless charging and wired charging.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the two-way charging device structural representation that the embodiment of the present invention one provides;
Fig. 2 is the two-way charging device structural representation that the embodiment of the present invention two provides;
Fig. 3 is the two-way charging device structural representation that the embodiment of the present invention two provides;
Fig. 4 is the end view of the first magnetic field shielding plate that the embodiment of the present invention two provides;
Fig. 5 is the vertical view of the first magnetic field shielding plate that the embodiment of the present invention two provides;
Fig. 6 is the two-way charging system structural representation that the embodiment of the present invention three provides;
Fig. 7 is the two-way charging system structural representation that the embodiment of the present invention four provides;
Fig. 8 is the two-way charging system structural representation that the embodiment of the present invention four provides;
Fig. 9 is the end view of the second magnetic field shielding plate that the embodiment of the present invention four provides;
Figure 10 is the vertical view of the second magnetic field shielding plate that the embodiment of the present invention four provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
Embodiments provide a kind of two-way charging device, this device is applicable to carry out energy exchange between electric energy storage device (such as electric automobile vehicle mounted electric pond) and electrical network (power supply), this device can be arranged on electric automobile, and see Fig. 1, this device comprises:
First rectification adverser 101, the first direct current for exporting electric energy storage device carries out inversion, obtain the first alternating current, or, rectification is carried out to the second alternating current received or the 3rd alternating current, obtain the second direct current or the 3rd direct current, the second direct current or the 3rd direct current are outputted to electric energy storage device;
First radio receiving transmitting module 102, for the first alternating current exported by the first rectification adverser 101, is converted to the first electromagnetic wave and sends the first electromagnetic wave, or, receive the second electromagnetic wave, and the second electromagnetic wave is converted to the second alternating current;
Wired charging module 103, for the first alternating current exported by the first rectification adverser 101, exports power supply to, or, export the 3rd alternating current of power delivery to first rectification adverser;
First control module 104, switch in inversion and rectification two states for controlling the first rectification adverser 101, one that controls in the first radio receiving transmitting module 102 and wired charging module 103 in running order.
First rectification adverser controls at inverter mode by employing first control module by the embodiment of the present invention, the first rectification adverser is made to carry out inversion to the first direct current that electric energy storage device exports, obtain the first alternating current, first control module controls the first radio receiving transmitting module simultaneously and the first alternating current is converted to the first electromagnetic wave and sends the first electromagnetic wave, thus can provide energy for power supply; Or, adopt the first control module to control the first radio receiving transmitting module and receive the second electromagnetic wave, and the second electromagnetic wave is converted to the second alternating current, first rectification adverser controls at rectification state by the first control module simultaneously, the first rectification adverser is made to carry out rectification to the second alternating current, obtain the second direct current, and the second direct current is outputted to electric energy storage device, thus the energy that power supply provides can be received; Achieve two-way charge function, this device also comprises wired charging module simultaneously, thus achieves the combination of wireless charging and wired charging.
Embodiment two
Embodiments provide a kind of two-way charging device, this device is applicable to carry out energy exchange between electric energy storage device (such as electric automobile vehicle mounted electric pond) and electrical network (power supply), this device can be arranged on electric automobile, and see Fig. 2 ~ 3, this device comprises:
First rectification adverser 201, first radio receiving transmitting module 202, wired charging module 203 and the first control module 204.
Wherein, first rectification adverser 201, the first direct current for exporting electric energy storage device carries out inversion, obtain the first alternating current, or, rectification is carried out to the second alternating current received or the 3rd alternating current, obtains the second direct current or the 3rd direct current, the second direct current or the 3rd direct current are outputted to electric energy storage device;
First radio receiving transmitting module 202, for the first alternating current exported by the first rectification adverser 201, is converted to the first electromagnetic wave and sends the first electromagnetic wave, or, receive the second electromagnetic wave, and the second electromagnetic wave is converted to the second alternating current;
Wired charging module 203, for the first alternating current exported by the first rectification adverser 201, exports power supply to, or, export the 3rd alternating current of power delivery to first rectification adverser;
First control module 204, switch in inversion and rectification two states for controlling the first rectification adverser 201, one that controls in the first radio receiving transmitting module 202 and wired charging module 203 in running order.
In a kind of implementation of the embodiment of the present invention, see Fig. 2, the first radio receiving transmitting module 202 comprises:
First coil L1, the first electric capacity C1, the first K switch 1, second coil L2, second switch K2 and the second electric capacity C2, first coil L1 and the first electric capacity C1 connects, second coil C2 and the second electric capacity C2 is in parallel, first K switch 1 is connected with the first coil L1, and second switch K2 connects with the second coil L2.First control module 204 is disconnected by control first K switch 1 and second switch K2 or closed, controls the first coil L1 and to work or the second coil L2 works, thus realizes control first radio receiving transmitting module 202 and send or receive electromagnetic wave.Overlap coil in employing two complete transmission and receive in electromagnetic mode, above-mentioned implementation is a kind of optimal way, in other implementations, coil and Capacitance parallel connection can be adopted to send electromagnetic wave, adopts coil and capacitances in series to receive electromagnetic wave.
In the another kind of implementation of the embodiment of the present invention, see Fig. 3, the first radio receiving transmitting module 202 comprises: connect with the 3rd electric capacity C3 after tertiary coil L3, the 3rd electric capacity C3 and the 4th electric capacity C4, tertiary coil L3 and the 4th electric capacity C4 parallel connection.Here tertiary coil L3 performs simultaneously and sends and receive electromagnetic wave two kinds of functions.Complete at a set of coil of employing and send and receive in electromagnetic mode, above-mentioned implementation is a kind of optimal way, in other implementations, sends or receive electromagnetic wave after can adopting a coil and capacitances in series with another Capacitance parallel connection.
Above-mentioned first coil L1, the second coil L2 and tertiary coil L3 are all connected on two ac output ends of the first rectification adverser 201.
Particularly, the first rectification adverser 201 comprises six power devices, and these six power devices form three bridge arm structures.Above-mentioned power device can be IGBT (Isolated Gate Bipolar Transistor, insulated gate bipolar transistor) or MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide half field effect transistor).
Particularly, the first control module 204 is connected with the base stage of the power device in the first rectification adverser 201, by power device output drive signal, makes the first rectification adverser 201 switch inversion and rectification state.Wherein, when drive singal is square-wave signal, the first rectification adverser 201 is in inverter mode, and when drive singal is low level signal, the first rectification adverser 201 is in rectification state.
Further, this device also comprises: be connected to the first two-way DC converter 205 between electric energy storage device and the first rectification adverser 201.
Further, wired charging module 203 comprises: for the single-phase or three-phase selection circuit be connected with single-phase or three phase mains and the filter circuit be electrically connected with single-phase or three-phase selection circuit.Single-phase or three-phase selection circuit comprises: for connecting the 3rd K switch 5 of live wire, the 4th K switch 6 and the 5th K switch 7, and for connecting the 6th K switch 8 of ground wire, filter circuit comprises: the 7th K switch 9, the 8th K switch 10, the 9th K switch 11, the 5th electric capacity C11, the 6th electric capacity C12, the 7th electric capacity C13, the first inductance L 7, second inductance L 8 and the 3rd inductance L 9; Wherein, 5th electric capacity C11, the 6th electric capacity C12 and the 7th electric capacity C13 are in parallel, and the 5th electric capacity C11, the 6th electric capacity C12 and the 7th electric capacity C13 connect with the first inductance L 7, second inductance L 8 and the 3rd inductance L 9 respectively by the series connection of switch the 7th K switch 9, the 8th K switch 10 and the 9th K switch 11.
When carrying out wired charging, when power supply charges to electric energy storage device, and power supply is when being three-phase electricity, 3rd K switch 5, the 4th K switch 6, the 5th K switch 7 are closed, 6th K switch 8 disconnects, now power supply changes high-voltage dc voltage into by the rectification mode of the first inductance L 7, second inductance L 8 and the 3rd inductance L 9 and the first rectification adverser 201, then charges to electric energy storage device after the first two-way DC converter 205 step-down.When power supply charges to electric energy storage device, and power supply is when being single-phase electricity, 4th K switch 6, the 5th K switch 7 disconnect, 3rd K switch 5, the 6th K switch 8 are closed, now power supply changes high-voltage dc voltage into by the rectification mode of the first inductance L 7, the 3rd inductance L 9 and the first rectification adverser 201, then charges to electric energy storage device after the first two-way DC converter 205 step-down.
When carrying out wired charging, when electric energy storage device is to power source charges, and power supply is when being three-phase electricity, switch the 3rd K switch 5, 4th K switch 6, 5th K switch 7 is closed, 6th K switch 8 disconnects, switch the 7th K switch 9, 8th K switch 10, 9th K switch 11 is all closed, electric energy storage device exports and improve voltage after the first two-way DC converter, then after the first rectification adverser 201 inversion, alternating current is transformed into, through the first inductance L 7, second inductance L 8, 3rd inductance L 9 and the 5th electric capacity C11, power feed is given after the filter circuit that 6th electric capacity C12 and the 7th electric capacity C13 is formed.When electric energy storage device is to power source charges, and power supply is when being single-phase electricity, switch the 3rd K switch 5 is closed, 4th K switch 6, the 5th K switch 7 disconnect, 7th K switch 9 switch closes, and the 8th K switch 10, the 9th K switch 11 disconnect, and electric energy storage device exports and improve voltage after the first two-way DC converter, then after the first rectification adverser 201 inversion, be transformed into alternating current, after the filter circuit that the first inductance L 7, the 3rd inductance L 9 and the 5th electric capacity C11 are formed, give power feed.
During wireless charging, the 3rd K switch 5, the 4th K switch 6, the 5th K switch 7, the 6th K switch 8, the 7th K switch 9, the 8th K switch 10 and the 9th K switch 11 all disconnect.
First control module 204 realizes single-phase or three-phase alternating-current supply by the switch motion controlling the 3rd K switch 5, the 4th K switch 6, the 5th K switch 7, the 6th K switch 8, the 7th K switch 9, the 8th K switch 10 and the 9th K switch 11 and charges a battery, or storage battery is single-phase or three-phase alternating-current supply charging.
Further, this device also comprises: be located at the tenth K switch the 12 and the 11 K switch 13 between the first radio receiving transmitting module 202 and the first rectification adverser 201, first control module 204, by the closed disconnection of control the tenth K switch the 12, the 11 K switch 13, controls the first radio receiving transmitting module 202 and works or do not work.
Further, this device also comprises: the eight electric capacity C10 in parallel with the first rectification adverser 201, and electric capacity the 8th electric capacity C10 is dc-link capacitance, and Main Function is energy storage, flat ripple.
Further, first two-way DC converter 205 comprises the 4th inductance L 10, the 9th electric capacity C14 and two power device, 9th electric capacity C14 is in parallel with electric energy storage device, 4th inductance L 10 one end is connected between two power devices, and the 4th inductance L 10 other end is connected between the 9th electric capacity C14 and electric energy storage device positive pole.
See Fig. 4 ~ 5, this device also comprises: the first magnetic field shielding plate 206, first coil L1 and the second coil L2 all presses close to the first magnetic field shielding plate and arranges.In another kind of implementation, tertiary coil L3 presses close to the first magnetic field shielding plate and arranges.By arranging the first magnetic field shielding plate 206, wireless transmission effect can be improved and prevent magnetic field exposure.
Further, the first control module 204 can comprise a DSP (Digital Signal Processor, digital signal processor) and the first wireless communication unit, and this first wireless communication unit is electrically connected with a DSP.First wireless communication unit can adopt zigbee to carry out information transmission.
Further, the first control module 204, also for according to radio transmission efficiency, controls the power output of the first two-way DC converter 205, to make radio transmission efficiency maximum.Wherein, radio transmission efficiency refers to, the ratio of the received power (i.e. the power output of the first two-way DC converter 205) of the two-way charging device in the transmitted power of the two-way charging device in embodiment two and the present embodiment.
Particularly, radio transmission efficiency and the air line distance between transmitting coil and receiving coil, deviation post and bearing power size have relation.At power supply in electric energy storage device charging process, the air line distance of transmitting coil and receiving coil, deviation post relative quiet after, first control module 204, by the power output (i.e. bearing power) of control first two-way DC converter 205, can realize radio transmission efficiency and maximize.In concrete control procedure, first control module 204 can control the first two-way DC converter 205 and carry out power scan, namely gradually change the power output of the first two-way DC converter 205, and the radio transmission efficiency compared under different output power, determine maximum wireless efficiency of transmission, and by the output power of the first two-way DC converter 205 on the output power value corresponding with this maximum wireless efficiency of transmission.Wherein, when calculating radio transmission efficiency, the first control module 204 can gather the power output of the first two-way DC converter 205, and is obtained the power output of power transfer module in the two-way charging system in embodiment four by radio communication.
Be that electric energy storage device carries out wireless charging for example below with power supply, be briefly described the operation principle of the device that the embodiment of the present invention provides, wherein the first radio receiving transmitting module adopts the structure of Fig. 2:
First control module 204 receives the instruction for electric energy storage device charging of user by the input of the input equipment such as button, voice, touch-screen, or by the instruction of charging for electric energy storage device that wireless communication receiver user sends.
First control module 204 controls that the first K switch 2 is closed, second switch K1 opens, and under this operating state, the second coil L2 receives electromagnetic wave.First control module, by the drive singal of six power devices of control first rectification adverser, makes the first rectification adverser be operated in rectification state.
The 4th coil L4 in the course of work in the second coil L2 and embodiment four is in resonance condition.
Electric energy storage device is contrary with said process to power source charges, repeats no more here.
First rectification adverser controls at inverter mode by employing first control module by the embodiment of the present invention, the first rectification adverser is made to carry out inversion to the first direct current that electric energy storage device exports, obtain the first alternating current, first control module controls the first radio receiving transmitting module simultaneously and the first alternating current is converted to the first electromagnetic wave and sends the first electromagnetic wave, thus can provide energy for power supply; Or, adopt the first control module to control the first radio receiving transmitting module and receive the second electromagnetic wave, and the second electromagnetic wave is converted to the second alternating current, first rectification adverser controls at rectification state by the first control module simultaneously, the first rectification adverser is made to carry out rectification to the second alternating current, obtain the second direct current, and the second direct current is outputted to electric energy storage device, thus the energy that power supply provides can be received; Achieve two-way charge function, this device also comprises wired charging module simultaneously, thus achieves the combination of wireless charging and wired charging.And when charging to electric energy storage device, by controlling the power output of the first two-way DC converter, thus realize maximise transmission efficiency.
Embodiment three
Embodiments provide a kind of two-way charging system, this system is applicable to carry out energy exchange between electric energy storage device (such as electric automobile vehicle mounted electric pond) and electrical network (power supply), and see Fig. 6, this system comprises:
As the two-way charging device 301 described in embodiment one or two;
Power transfer module 302, for the output of power supply is converted to the 4th direct current, or, the 5th direct current is changed, and the 5th direct current after conversion is outputted to power supply;
Second rectification adverser 303, carries out inversion for the 4th direct current exported power transfer module 302, obtains the 4th alternating current, or, rectification is carried out to the 5th alternating current received, obtains the 5th direct current, and the 5th direct current is outputted to power transfer module;
Second radio receiving transmitting module 304, for the 4th alternating current exported by the second rectification adverser 303, is converted to the second electromagnetic wave and sends the second electromagnetic wave, or, receive the first electromagnetic wave, and the first electromagnetic wave is converted to the 5th alternating current;
Second control module 305, switches in inversion and rectification two states for controlling the second rectification adverser 303;
Second control module 305 and the first control module wireless connections.
In specific implementation, above-mentioned power supply can be DC power supply, also can be AC power.
Second rectification adverser controls at inverter mode by employing second control module by the embodiment of the present invention, the second rectification adverser is made to carry out inversion to the 4th direct current that power transfer module exports, obtain the 4th alternating current, simultaneously the second control module controls the second radio receiving transmitting module and the 4th alternating current is converted to the second electromagnetic wave and sends this second electromagnetic wave, thus can provide energy for corresponding electric energy storage device, the embodiment of the present invention can also adopt the second control module to control the second radio receiving transmitting module and receive the first electromagnetic wave, and the first electromagnetic wave is converted to the 5th alternating current, second rectification adverser controls at rectification state by the second control module simultaneously, the second rectification adverser is made to carry out rectification to the 5th alternating current received, obtain the 5th direct current, and the 5th direct current is outputted to power transfer module, power transfer module is changed the 5th direct current, and the 5th direct current after conversion is outputted to power supply, thus the energy that electric energy storage device provides can be received, and then achieve two-way charge function, this device also comprises charging inlet simultaneously, thus achieve the combination of wireless charging and wired charging.
Embodiment four
Embodiments provide a kind of two-way charging system, this apparatus system is applicable to carry out energy exchange between electric energy storage device (such as electric automobile vehicle mounted electric pond) and electrical network (power supply), see Fig. 7 ~ 8, this system comprises: as the two-way charging device 401, power transfer module 402, second rectification adverser 403, second radio receiving transmitting module 404 and the second control module 405 that describe in embodiment one or two.
Wherein, power transfer module 402, for the output of power supply is converted to the 4th direct current, or, the 5th direct current is changed, and the 5th direct current after conversion is outputted to power supply;
Second rectification adverser 403, carries out inversion for the 4th direct current exported power transfer module 402, obtains the 4th alternating current, or, rectification is carried out to the 5th alternating current received, obtains the 5th direct current, and the 5th direct current is outputted to power transfer module;
Second radio receiving transmitting module 404, for the 4th alternating current exported by the second rectification adverser 403, is converted to the second electromagnetic wave and sends the second electromagnetic wave, or, receive the first electromagnetic wave, and the first electromagnetic wave is converted to the 5th alternating current;
Second control module 405, switches in inversion and rectification two states for controlling the second rectification adverser 403;
Second control module 405 and the first control module wireless connections.
In a kind of implementation of the embodiment of the present invention, see Fig. 7, the second radio receiving transmitting module 404 comprises:
4th coil L4, the tenth electric capacity C6, twelvemo close K3, the 5th coil L5, the 11 electric capacity C7 and the 13 K switch 4,4th coil L4 and the tenth electric capacity C6 connects, 5th coil C5 and the 11 electric capacity C7 is in parallel, twelvemo pass K3 connects with the 4th coil L4, and the 13 K switch 4 is connected with the 5th coil L5.Second control module 405 closes K3 by control twelvemo and the 13 K switch 4 disconnects or closed, controls the 4th coil L4 and to work or the 5th coil L5 works, thus realizes control second radio receiving transmitting module 404 and send or receive electromagnetic wave.Overlap coil in employing two complete transmission and receive in electromagnetic mode, above-mentioned implementation is a kind of optimal way, in other implementations, coil and Capacitance parallel connection can be adopted to send electromagnetic wave, adopts coil and capacitances in series to receive electromagnetic wave.
See Fig. 8, in another kind of implementation, the second radio receiving transmitting module 404 comprises: the 6th coil L6, the 12 electric capacity C8 and the 13 electric capacity C9, connects after the 6th coil L6 and the 13 electric capacity C9 parallel connection with the 12 electric capacity C8.Here the 6th coil L6 performs simultaneously and sends and receive electromagnetic wave two kinds of functions.Complete at a set of coil of employing and send and receive in electromagnetic mode, above-mentioned implementation is a kind of optimal way, in other implementations, sends or receive electromagnetic wave after can adopting a coil and capacitances in series with another Capacitance parallel connection.
Above-mentioned 4th coil L4, the 5th coil L5 and the 6th coil L6 are connected on two ac output ends of the second rectification adverser 403.
Particularly, the second rectification adverser 403 comprises four power devices, and these four power devices form a H bridge.Above-mentioned power device can be IGBT or MOSFET.
Particularly, the second control module 405 is connected with the base stage of the power device in the second rectification adverser 403, by power device output drive signal, makes the second rectification adverser 403 switch inversion and rectification state.Wherein, when drive singal is square-wave signal, the second rectification adverser 403 is in inverter mode, and when drive singal is low level signal, the second rectification adverser 403 is in rectification state.
Particularly, power transfer module 402 can comprise the second two-way DC converter and single-phase or three phase rectifier inverter, and the output of the second two-way DC converter is connected with the input of the second rectification adverser 403 respectively with output that is single-phase or three phase rectifier inverter.Second two-way DC converter is used for connecting DC power supply and the second rectification adverser 403, single-phase or three phase rectifier inverter is used for connecting AC power and the second rectification adverser 403, thus according to the kind of practical power (DC power supply or AC power), different conversion regimes can be selected.Easily know, in other implementation, power transfer module 402 also can only include the second two-way DC converter, or only includes single-phase or three phase rectifier inverter.
Further, this system also comprises: the ten four electric capacity C5 in parallel with the second rectification adverser 403, and the 14 electric capacity C5 is dc-link capacitance, and Main Function is energy storage, flat ripple.
See Fig. 9 ~ 10, this system also comprises: the second magnetic field shielding plate the 406, four coil L4 and the 5th coil L5 all presses close to the second magnetic field shielding plate and arranges.In another kind of implementation, the 6th coil L6 presses close to the second magnetic field shielding plate and arranges.By arranging the second magnetic field shielding plate 406, wireless transmission effect can be improved and prevent magnetic field exposure.
Further, the second control module 405 can comprise the 2nd DSP and the second wireless communication unit, and this second wireless communication unit is electrically connected with the 2nd DSP.Second wireless communication unit can adopt zigbee to carry out information transmission.
Further, the second control module 405, also for according to radio transmission efficiency, controls the second two-way DC converter or power output that is single-phase or three phase rectifier inverter, to make radio transmission efficiency maximum.Wherein, radio transmission efficiency refers to, the transmitted power of two-way charging device and the power output of the second two-way DC converter, or, the ratio of the power output of single-phase or three phase rectifier inverter.
Particularly, radio transmission efficiency and the air line distance between transmitting coil and receiving coil, deviation post and bearing power size have relation.In the process that electric energy storage device charges to DC power supply, after the air line distance, deviation post geo-stationary of transmitting coil and receiving coil, second control module 405, by the power output (i.e. bearing power) of control second two-way DC converter, can realize radio transmission efficiency and maximize.In concrete control procedure, second control module 405 can control the second two-way DC converter and carry out power scan, namely gradually change the power output of the second two-way DC converter, and the radio transmission efficiency compared under different output power, determine maximum wireless efficiency of transmission, and by the output power of the second two-way DC converter on the output power value corresponding with this maximum wireless efficiency of transmission.Wherein, when calculating radio transmission efficiency, the second control module 405 can gather the power output of the second two-way DC converter, and is obtained the transmitted power of two-way charging device by radio communication.
Similarly, in the process of electric energy storage device to alternating current power supply charging, after the air line distance, deviation post geo-stationary of transmitting coil and receiving coil, maximum transmitted efficiency can be obtained by controlling power output that is single-phase or three phase rectifier inverter.
Below with under adopting wireless mode, power supply is that electric energy storage device is charged as example, and be briefly described the operation principle of the system that the embodiment of the present invention provides, wherein the second radio receiving transmitting module adopts the structure of Fig. 7:
Second control module 405 receives the instruction for electric energy storage device charging of user by the input of the input equipment such as button, voice, touch-screen, or by the instruction of charging for electric energy storage device that wireless communication receiver user sends.
Second control module 405 controls twelvemo and closes that K3 is closed, the 13 K switch 4 is opened, this operating state lower coil L4 emitting electromagnetic wave.Second control module, by the drive singal of four power devices of control second rectification adverser, makes the 3rd rectification adverser be operated in inverter mode.
In the course of work, the 4th coil L4 and the second coil L2 is in resonance condition.
Electric energy storage device is contrary with said process to power source charges, repeats no more here.
Second rectification adverser controls at inverter mode by employing second control module by the embodiment of the present invention, the second rectification adverser is made to carry out inversion to the 4th direct current that power transfer module exports, obtain the 4th alternating current, simultaneously the second control module controls the second radio receiving transmitting module and the 4th alternating current is converted to the second electromagnetic wave and sends this second electromagnetic wave, thus can provide energy for corresponding electric energy storage device, the embodiment of the present invention can also adopt the second control module to control the second radio receiving transmitting module and receive the first electromagnetic wave, and the first electromagnetic wave is converted to the 5th alternating current, second rectification adverser controls at rectification state by the second control module simultaneously, the second rectification adverser is made to carry out rectification to the 5th alternating current received, obtain the 5th direct current, and the 5th direct current is outputted to power transfer module, power transfer module is changed the 5th direct current, and the 5th direct current after conversion is outputted to power supply, thus the energy that electric energy storage device provides can be received, and then achieve two-way charge function, this device also comprises charging inlet simultaneously, thus achieve the combination of wireless charging and wired charging.And when giving power source charges, by controlling the first two-way DC converter or power output that is single-phase or three phase rectifier inverter, thus realize maximise transmission efficiency.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a two-way charging device, is characterized in that, is applicable to carry out energy exchange between vehicle-mounted electric energy storage device and power supply, and described device comprises:
First rectification adverser, the first direct current for exporting electric energy storage device carries out inversion, obtain the first alternating current, or, rectification is carried out to the second alternating current received or the 3rd alternating current, obtain the second direct current or the 3rd direct current, described second direct current or described 3rd direct current are outputted to described electric energy storage device;
First radio receiving transmitting module, for described first alternating current exported by described first rectification adverser, is converted to the first electromagnetic wave and sends described first electromagnetic wave, or, receive the second electromagnetic wave, and described second electromagnetic wave is converted to described second alternating current;
Wired charging module, for described first alternating current exported by described first rectification adverser, exports power supply to, or, export described 3rd alternating current of described power delivery to described first rectification adverser;
First control module, switches in inversion and rectification two states for controlling described first rectification adverser, and one that controls in described first radio receiving transmitting module and described wired charging module in running order; When controlling described first rectification adverser and being operated in rectification state, control described first radio receiving transmitting module and receive described second electromagnetic wave, or, control described wired charging module and export described 3rd alternating current to described first rectification adverser; When controlling described first rectification adverser and being operated in inverter mode, control described first radio receiving transmitting module and send described first electromagnetic wave, or, control described wired charging module and export described first alternating current to power supply.
2. device according to claim 1, is characterized in that, described first radio receiving transmitting module comprises:
First coil L1, the first electric capacity C1, the first K switch 1, second coil L2, the second electric capacity C2 and second switch K2, described first coil L1 and described first electric capacity C1 connects, described second coil L2 and described second electric capacity C2 is in parallel, described first K switch 1 and described first coil L1 connect, described second switch K2 and described second coil L2 connects, and described first control module is also for controlling the switch motion of described first K switch 1 and described second switch K2; Or,
Described first radio receiving transmitting module comprises: tertiary coil L3, the 3rd electric capacity C3 and the 4th electric capacity C4, connects after described tertiary coil L3 and described 4th electric capacity C4 parallel connection with described 3rd electric capacity C3.
3. device according to claim 1, is characterized in that, described device also comprises: be connected to the first two-way DC converter between described electric energy storage device and described first rectification adverser.
4. device according to claim 3, is characterized in that, described first control module, also for according to radio transmission efficiency, controls the power output of described first two-way DC converter.
5. device according to claim 1, is characterized in that, described first control module comprises the first digital signal processor and the first wireless communication unit, and described first wireless communication unit is electrically connected with described first digital signal processor.
6. device according to claim 1, is characterized in that, described wired charging module comprises: the filter circuit be electrically connected for the single-phase or three-phase selection circuit that is connected with single-phase or three phase mains and or three-phase selection circuit single-phase with described.
7. a two-way charging system, is characterized in that, described system comprises:
Two-way charging device as described in any one of claim 1 ~ 6;
Power transfer module, for the output of described power supply is converted to the 4th direct current, or, the 5th direct current is changed, and the 5th direct current after conversion is outputted to described power supply;
Second rectification adverser, carries out inversion for described 4th direct current exported described power transfer module, obtains the 4th alternating current, or, rectification is carried out to the 5th alternating current received, obtains described 5th direct current, and described 5th direct current is outputted to described power transfer module;
Second radio receiving transmitting module, for described 4th alternating current exported by described second rectification adverser, is converted to the second electromagnetic wave and sends described second electromagnetic wave, or, receive the first electromagnetic wave, and described first electromagnetic wave is converted to described 5th alternating current;
Second control module, switches in inversion and rectification two states for controlling described second rectification adverser;
Described second control module and described first control module wireless connections.
8. system according to claim 7, is characterized in that, described second radio receiving transmitting module comprises:
4th coil L4, the tenth electric capacity C6, twelvemo close K3, the 5th coil L5, the 11 electric capacity C7 and the 13 K switch 4, described 4th coil L4 and described tenth electric capacity C6 connects, described 5th coil L5 and described 11 electric capacity C7 is in parallel, described twelvemo pass K3 and described 4th coil L4 connects, described 13 K switch 4 and described 5th coil L5 connect, and described second control module also closes the switch motion of K3 and described 13 K switch 4 for controlling described twelvemo; Or,
Described second radio receiving transmitting module comprises: the 6th coil L6, the 12 electric capacity C8 and the 13 electric capacity C9, connects after described 6th coil L6 and described 13 electric capacity C9 parallel connection with described 12 electric capacity C8.
9. system according to claim 7, it is characterized in that, described power transfer module comprises: the second two-way DC converter and single-phase or three phase rectifier inverter, and the output of described second two-way DC converter output that is single-phase with described or three phase rectifier inverter is connected with the input of described second rectification adverser respectively.
10. system according to claim 9, is characterized in that, described second control module, also for according to radio transmission efficiency, controls the power output of described second two-way DC converter or described single-phase or three phase rectifier inverter.
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| CN104659925A (en) * | 2013-11-20 | 2015-05-27 | 中兴通讯股份有限公司 | Wireless power transceiving method and device |
| US9548622B2 (en) * | 2014-06-16 | 2017-01-17 | Wistron Corporation | Wirelessly charging a mobile device and utilizing the mobile device as a power source |
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| CN104113120A (en) * | 2014-07-31 | 2014-10-22 | 奇瑞汽车股份有限公司 | Wireless charging system and electric vehicle |
| CN105186714A (en) * | 2015-09-10 | 2015-12-23 | 胡江浩 | Low-power wireless charging circuit topological structure |
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| CN109687694B (en) * | 2019-01-21 | 2020-11-17 | 温州大学 | Multi-power supply integrated assembly and control method thereof |
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| CN110696643B (en) * | 2019-11-19 | 2023-03-24 | 南京师范大学 | Electric vehicle wireless charging and discharging and positioning function multiplexing device and mode switching control method thereof |
| WO2022022586A1 (en) * | 2020-07-30 | 2022-02-03 | 深圳市中孚能电气设备有限公司 | Bidirectional wireless charging apparatus, bidirectional wireless charging control method, and bidirectional charging headlight |
| CN112498134A (en) * | 2020-12-31 | 2021-03-16 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Bidirectional energy flow vehicle-mounted charger with wireless power access |
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