CN211127260U - Charging control device and charging system - Google Patents
Charging control device and charging system Download PDFInfo
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- CN211127260U CN211127260U CN202020083577.4U CN202020083577U CN211127260U CN 211127260 U CN211127260 U CN 211127260U CN 202020083577 U CN202020083577 U CN 202020083577U CN 211127260 U CN211127260 U CN 211127260U
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Abstract
The utility model discloses a charge control device and charging system, the device includes: the device comprises a power supply end, a control unit and a sending unit; a power supply terminal, comprising: commercial power and fuel cells; the control unit is used for determining that one power supply party of commercial power and a fuel cell in the power supply end supplies power and transmitting the electric energy provided by the determined power supply party to the sending unit; the transmitting unit is used for converting electric energy provided by a determined power supplier into electromagnetic energy and transmitting the converted electromagnetic energy to the at least one receiving unit so as to realize wireless charging from the power supply end to the at least one receiving unit; the wireless charging system comprises a transmitting unit, a charging unit and a charging unit, wherein the transmitting unit is a wireless transmitting unit of a power supply party in wireless charging; and the receiving unit is a wireless receiving unit on the side of the electrical equipment in wireless charging. The utility model discloses a scheme can solve the inconvenient problem of charging of electrical equipment at the family, reaches the effect that promotes the convenience of charging of electrical equipment at the family.
Description
Technical Field
The utility model belongs to the technical field of charge, concretely relates to charge control device and charging system especially relate to a household is with wireless fuel charging system's that charges charge control device, the household that has this charge control device is with wireless fuel charging system that charges and the household is with wireless fuel charging system's that charges charge control method.
Background
A fuel cell is a power generation device that directly converts chemical energy into electric energy, and is widely regarded as a power generation technology with a wide development prospect due to its advantages of high efficiency and zero pollution. At present, foreign fuel cell technology is mature, gradually reaches market, and can be widely applied to the fields of military affairs, space, power plants, motor vehicles, mobile equipment, resident families and the like.
But the charging of the electrical equipment by the user is still inconvenient. Such as: at first, household electrical equipment is connected to a mains supply through a wire, and the most obvious characteristic is that the electrical equipment is fixed at a certain position, the position is required to be moved, or a room is changed, the position is relatively fixed, and the power supply interface is fixed from the bottom. Secondly, the number of the power supply socket and the power supply equipment is limited, and the power supply socket and the power supply equipment are not beautiful and unsafe because the power supply socket and the power supply equipment are plugged everywhere.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned defect, provide a charge control device and charging system to solve the inconvenient problem of charging of electrical equipment for the user, reach the effect that promotes the convenience of charging of electrical equipment for the user.
The utility model provides a charge control device, include: the device comprises a power supply end, a control unit and a sending unit; a power supply terminal, comprising: commercial power and fuel cells; the control unit is used for determining that one power supply party of commercial power and a fuel cell in the power supply end supplies power and transmitting the electric energy provided by the determined power supply party to the sending unit; the transmitting unit is used for converting electric energy provided by a determined power supplier into electromagnetic energy and transmitting the converted electromagnetic energy to the at least one receiving unit so as to realize wireless charging from the power supply end to the at least one receiving unit; the wireless charging system comprises a transmitting unit, a charging unit and a charging unit, wherein the transmitting unit is a wireless transmitting unit of a power supply party in wireless charging; and the receiving unit is a wireless receiving unit on the side of the electrical equipment in wireless charging.
Optionally, a control unit comprising: an AC-DC module and a control switch; the control unit determines that one of commercial power and a fuel cell in a power supply terminal supplies power and transmits the power supplied by the determined power supply to the sending unit, and comprises the following steps: under the condition of mains supply, the mains supply is controlled to be converted into direct current through the AC-DC module, and the direct current obtained by conversion of the AC-DC module is controlled to be transmitted to the sending unit; under the condition that the mains supply is powered off, the control switch triggers the fuel cell to supply power, the fuel cell converts chemical energy into electric energy, and the electric energy converted by the fuel cell is controlled to be transmitted to the sending unit; and under the condition of power failure recovery of the mains supply, after the control switch triggers the fuel cell to stop supplying power, the mains supply is controlled to continue supplying power.
Optionally, the control switch comprises: a relay; the coil of the relay and the commercial power form a loop, and the normally open contact of the relay and the fuel cell form a loop.
With the above device phase-match, the utility model discloses another aspect provides a charging system, include: the charge control device and the receiving unit described above; the receiving unit is used for receiving the electromagnetic energy transmitted by the transmitting unit and converting the received electromagnetic energy into electric energy so as to realize wireless charging of the electrical equipment to which the receiving unit belongs.
Optionally, the sending unit includes: the frequency modulation device comprises a first frequency selection module and a frequency modulation module; the first frequency selection module is used for determining the resonant frequency of the transmitting side; and the frequency modulation module is used for converting the electric energy provided by the determined power supplier into electromagnetic energy based on the determined transmitting side resonant frequency and transmitting the converted electromagnetic energy to at least one receiving unit.
Optionally, the first frequency selecting module includes: a first inductor and a first capacitor; a frequency modulation module comprising: the first to fourth switching tubes and the first to fourth body diodes are connected with the first control end and the second control end of each of the first to fourth switching tubes in parallel; the first switch tube, the second switch tube, the third switch tube and the fourth switch tube form a bridge type driving circuit, and the first inductor and the first capacitor are arranged between the common end of the first switch tube and the second switch tube and the common end of the third switch tube and the fourth switch tube in the bridge type driving circuit in parallel.
Optionally, the receiving unit includes: the second frequency selection module, the rectification module, the filtering module and the storage battery are arranged; the second frequency selection module is used for determining the resonant frequency of the receiving side; wherein, the resonance frequency of the receiving side is the same as the resonance frequency of the transmitting side; a rectification module for receiving the electromagnetic energy transmitted by the transmission unit based on the determined receiving-side resonant frequency and converting the received electromagnetic energy into electric energy; the filtering module is used for filtering the converted electric energy; and the storage battery is used for storing the electric energy obtained by the filtering processing.
Optionally, the second frequency selection module comprises a second inductor and a second capacitor, the rectification module comprises first to fourth rectification elements, the first to fourth rectification elements form a rectification bridge, the second inductor and the second capacitor are arranged in parallel between a common end of the first rectification element and the second rectification element and a common end of the third rectification element and the fourth rectification element in the rectification bridge, and the filtering module comprises an L C filtering circuit formed by the third inductor and the third capacitor, and the L C filtering circuit is arranged on the output side of the rectification bridge formed by the first to fourth rectification elements.
The utility model discloses a scheme through combining together fuel cell and wireless charging, makes the realization of the fuel cell of wireless charging of family possible, can promote the convenience of charging of electrical equipment of family.
Further, the utility model discloses a scheme is through the wireless energy transmission topological structure that charges of fuel cell resonant coupling formula for the user can charge for with electrical apparatus through wireless transmission's mode, makes with electrical apparatus the battery charging outfit who has removed wired charging, has simplified charge structure, has also made things convenient for user's use.
Further, the utility model discloses a scheme is through combining together fuel cell and wireless charging, realizes still can give the equipment power supply when having a power failure, makes electrical equipment normal operating when the commercial power is turn-offed for fuel cell stand-by power supply makes the power supply still secure under the commercial power outage condition, has promoted the convenience and the reliability of charging.
Therefore, the utility model discloses a scheme is through using commercial power or fuel cell as the feeder ear, carries out wireless charging to at least one electrical equipment, can realize still can give the equipment power supply when having a power failure, makes electrical equipment can normally operate when the commercial power is turn-offed, solves the household and charges inconvenient problem with electrical equipment, reaches the effect that promotes the convenience of charging of household electrical equipment.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a charging control device according to the present invention;
fig. 2 is a schematic overall structure diagram of an embodiment of the charging system of the present invention;
fig. 3 is a schematic diagram of a power supply structure of a commercial power and a fuel cell according to an embodiment of the charging system of the present invention;
fig. 4 is a schematic diagram of a wireless charging topology of a fuel cell according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a charging control method according to an embodiment of the present invention.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
According to the utility model discloses an embodiment provides a charge control device. Referring to fig. 1, a schematic structural diagram of an embodiment of the apparatus of the present invention is shown. The charge control device may include: power supply end, control unit and transmitting element. And the power supply end can be connected to the transmitting unit through the control unit so as to transmit the electromagnetic wave signal through the transmitting unit and realize wireless charging with the receiving unit. Wherein, the power supply terminal can include: commercial power and fuel cells. Adopt wireless charging mode to supply power for domestic appliance equipment, more nimble position is placed so, can supply more equipment to insert, has not had mixed and disorderly naked electric wire and interface, and more convenience of customers uses, and the security is good.
In an alternative example, the control unit may be configured to determine that one of the commercial power and the fuel cell in the power supply terminal supplies power, and transmit the power supplied by the determined one of the power supplies to the transmitting unit.
Optionally, the control unit may include: an AC-DC module and a control switch. And the commercial power is connected to the fuel cell through the AC-DC module and the control switch respectively.
The control unit determines that one of the commercial power and the fuel cell in the power supply terminal supplies power, and transmits the power supplied by the determined one of the power supplies to the sending unit, and may include any one of the following control situations.
The first control scenario: under the condition of mains supply, the mains supply is controlled to be converted into direct current through the AC-DC module, and the direct current obtained by conversion of the AC-DC module is controlled to be transmitted to the sending unit.
For example: under the condition of mains supply, the mains supply converts electric energy into electromagnetic energy through the wireless charging topological structure after being converted by the AC-DC module. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances.
The second control scenario: under the condition that the mains supply is powered off, the control switch triggers the fuel cell to supply power, the fuel cell converts chemical energy into electric energy, and the electric energy converted by the fuel cell is controlled to be transmitted to the sending unit.
For example: under the condition of mains supply outage, the control switch is triggered to start the fuel cell to supply power, the fuel cell converts chemical energy into electric energy, and the electric energy is converted into electromagnetic energy through the wireless charging topological structure. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances. Therefore, wireless charging can be realized between the fuel cell and the user electrical appliance in a wireless energy transmission mode.
The third control scenario: under the condition that the mains supply is recovered after power failure, the control switch triggers the fuel cell to stop supplying power, and then the mains supply is controlled to continue supplying power, namely the mains supply is continuously controlled to be converted into direct current through the AC-DC module, and the direct current obtained by conversion of the AC-DC module is continuously controlled to be transmitted to the sending unit.
For example: under the condition that the mains supply is cut off and recovered, the control switch triggers the fuel cell to stop supplying power, the power is supplied by the mains supply, and the mains supply is converted into electromagnetic energy through the AC-DC module and then converted into electric energy through the wireless charging topological structure. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances.
Therefore, the power supply switching control of the commercial power and the fuel cell in the power supply end is realized through the AC-DC module and the control switch, the fuel cell can be reliably charged under the condition of commercial power outage, and the switching control mode is reliable and safe.
More optionally, the control switch may include: a relay. For example: the power can be supplied by commercial power and a fuel cell. The utility power, such as AC220V, may output DC48V through the AC-DC module, and may be connected to the Fuel Cell (FC) through a control switch, such as a relay, with DC48V connected to the relay and the Fuel Cell (FC), respectively.
The coil of the relay and the commercial power form a loop, and the normally open contact of the relay and the fuel cell form a loop.
For example: under the condition of mains supply outage, the relay is caused to lose power, the action of triggering the fuel cell to start up and supply power, the fuel cell converts chemical energy into electric energy, and the electric energy is converted into electromagnetic energy through the wireless charging topological structure. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances. Therefore, wireless charging can be realized between the fuel cell and the user electrical appliance in a wireless energy transmission mode.
For another example: under the condition that the mains supply is powered off and recovered, the relay is powered on to trigger the fuel cell to stop supplying power, the power is supplied by the mains supply, and the mains supply is converted into electromagnetic energy through the AC-DC module and then converted into electric energy through the wireless charging topological structure. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances.
Therefore, the relay is used as the control switch, the normally open contact of the relay is controlled to be opened and closed by utilizing the power on and power off of the coil of the relay, the power supply switching between the commercial power and the fuel cell is realized, the control mode is simple, and the control reliability can be ensured.
In an alternative example, the transmitting unit may be configured to convert the electric energy provided by the determined power supplier into electromagnetic energy, and transmit the converted electromagnetic energy to the at least one receiving unit, so as to enable the power supplier to wirelessly charge the at least one receiving unit. Through a sending unit to at least one receiving unit wireless charging, not only can realize wireless charging more than one to, still be favorable to on a large scale recovery magnetic leakage to improve energy conversion efficiency.
The transmitting unit is a wireless transmitting unit of a power supply party in wireless charging. And the receiving unit is a wireless receiving unit on the side of the electrical equipment in wireless charging.
For example: the fuel cell can be combined with wireless charging, so that the user can realize the wireless charging fuel cell. Furthermore, through combining together fuel cell and wireless charging, realize still can supplying power for equipment when having a power failure, make electrical equipment can be normal operating when the commercial power is shut off to, make fuel cell stand-by power supply make the commercial power supply under the outage circumstances supply power still guaranteed.
Therefore, the mains supply and the fuel cell are used as power supply ends, the receiving unit of at least one piece of electric equipment is charged by using the wireless charging technology, the mains supply or the fuel cell can be used for charging at least one piece of electric equipment, the continuity and the reliability of charging can be guaranteed by using the fuel cell under the condition of mains supply outage, and the convenience of charging the household electric equipment is greatly improved.
Through a large amount of experimental verifications, adopt the technical scheme of the utility model, through combining together fuel cell and wireless charging, make the realization of the fuel cell of wireless charging of family possible, can promote the convenience of charging of electrical equipment of family.
According to the utility model discloses an embodiment still provides a charging system corresponding to charge control device. The charging system may include: the charging control device and the receiving unit described above.
The receiving unit may be configured to receive the electromagnetic energy transmitted by the transmitting unit, and convert the received electromagnetic energy into electric energy, so as to wirelessly charge the electrical device to which the receiving unit belongs.
For example: the fuel cell resonant coupling type wireless charging energy transmission topological structure design can be realized, so that the household fuel cell can charge the electrical appliance in a wireless transmission mode, the electrical appliance is free from the constraint of an electric wire and an exposed plug, and the fuel cell resonant coupling type wireless charging energy transmission topological structure is more attractive and convenient to move.
Therefore, by adopting a wireless charging mode of switching power supply between commercial power and a fuel cell, the charging of at least one electric device by the fuel cell can be realized, and the charging can be ensured under the condition of commercial power outage, so that the convenience of charging between the fuel cell and more than one electric device for a user is improved, and the convenience of using the user is also improved.
In an alternative example, the sending unit may include: the device comprises a first frequency selection module and a frequency modulation module.
The first frequency selection module may be configured to determine a transmission-side resonant frequency. And the frequency modulation module can be used for converting the electric energy provided by the determined power supplier into electromagnetic energy based on the determined transmitting-side resonant frequency and transmitting the converted electromagnetic energy to at least one receiving unit.
Therefore, the electric energy of the commercial power or the fuel cell is converted into electromagnetic energy and then is sent to the at least one receiving unit through the first frequency selection module and the frequency modulation module, so that the conversion and the sending of the power supply electric energy of the commercial power or the fuel cell can be realized, and the system is reliable and safe.
More optionally, the first frequency selecting module may include: the first inductor and the first capacitor are arranged in parallel.
A frequency modulation module, which may include: the first to fourth switching tubes and the first to fourth body diodes are connected with the first control end and the second control end of each of the first to fourth switching tubes in parallel. The first switch tube, the second switch tube, the third switch tube and the fourth switch tube form a bridge type driving circuit, and the first inductor and the first capacitor are arranged between the common end of the first switch tube and the second switch tube and the common end of the third switch tube and the fourth switch tube in the bridge type driving circuit in parallel. The first to fourth switching tubes may be MOS tubes, such as first to fourth MOS tubes.
For example, the transmitting unit, such as the transmitting side, may include a power supply, first to fourth MOS transistors, such as MOS transistors T1-T4, first to fourth diodes, such as diodes D1-D4, a first inductor L1 and a first capacitor C1, wherein the power supply VG1, which may be used as a main power supply when the utility power is available, may be powered by a Fuel Cell (FC) if the utility power is off, the first to fourth MOS transistors, such as MOS transistors T1-T4, constitute a bridge driving circuit, which functions to adjust the frequency to transmit electromagnetic energy out for receiving at the receiving side, the first to fourth diodes, such as diodes D1-D4, which may be used as body diodes of MOS transistors T1-T4, which are protection elements to prevent the MOS transistors from being destroyed by a strong back electromotive force, the first inductor L1 and the first capacitor C1 constitute a frequency selection module.
Therefore, the first frequency selection module is formed by the first inductor and the first capacitor, the frequency modulation modules are formed by the first to fourth switch tubes and the body diodes thereof, and the power supply electric energy of the commercial power or the fuel cell can be reliably converted and transmitted.
In an alternative example, the receiving unit may include: the second frequency selection module, the rectification module, the filtering module and the storage battery.
And the second frequency selection module can be used for determining the resonance frequency of the receiving side. Wherein the receiving side resonance frequency is the same as the transmitting side resonance frequency. The conditions that must be met to enable wireless charging are: the transmitting device (e.g. transmitting side) and the receiving device (e.g. receiving side) are at the same resonance point, and the resonance frequency is
To satisfy the consistent resonant frequency, it is necessary to ensure that the first inductor L1, the second inductor L2, and the fourth inductor L4 have equal inductance values, and the first capacitor C1, the second capacitor C2, and the fourth capacitor C4 are equivalent capacitors.
A rectifying module may be configured to receive the electromagnetic energy transmitted by the transmitting unit based on the determined receiving-side resonant frequency and convert the received electromagnetic energy into electric energy.
And the filtering module can be used for filtering the converted electric energy.
And the storage battery can be used for storing the electric energy obtained by the filtering processing.
Therefore, the electromagnetic energy converted and sent by the electric energy of the commercial power or the fuel cell is received through the second frequency selection module, the rectification module, the filtering module and the storage battery, the received electromagnetic energy is converted into the electric energy and then is filtered and stored, wireless charging of the electric equipment is achieved, and the charging mode is safe and convenient.
More optionally, the second frequency selecting module may include: the second inductor and the second capacitor are arranged in parallel.
A rectification module, which may include: the first to fourth rectifying elements form a rectifying bridge. The second inductor and the second capacitor are arranged between the common end of the first rectifying element and the second rectifying element and the common end of the third rectifying element and the fourth rectifying element in parallel in the rectifying bridge. The first to fourth rectifying elements may be, for example, fifth to eighth diodes in the first receiving side, such as D5-D8, or ninth to twelfth diodes in the second receiving side, such as D9-D12.
The filtering module can comprise an L C filtering circuit formed by a third inductor and a third capacitor, and a L C filtering circuit is arranged on the output side of a rectifying bridge formed by the first rectifying element, the second rectifying element and the fourth rectifying element.
For example: the number of receiving units may be more than one. For example: when the number of receiving units is two, the two receiving units may be a first receiving side and a second receiving side.
Specifically, the first receiving side may include fifth to eighth diodes such as D5-D8, a second inductor L2 and a second capacitor C2, a third inductor L3 and a third capacitor C3, a first battery V1 and a first load R1. the second receiving side may include ninth to twelfth diodes such as D9-D12, a fourth inductor L4 and a fourth capacitor C4, a fifth inductor L5 and a fifth capacitor C5, a second battery V2 and a second load R2.
The fifth to twelfth diodes, such as diodes D5-D12, may perform a rectifying function, the second inductor L2 and the second capacitor C2, the fourth inductor L4 and the fourth capacitor C4, and the like, are frequency-selective modules, the third inductor L3 and the third capacitor C3, the fifth inductor L5 and the fifth capacitor C5 form a filter circuit, the first battery V1 and the second battery V2 may be used as energy storage modules inside electrical appliances, the first load R1 and the second load R2 may represent electrical appliances.
When the mains supply is powered off, the relay is powered off to trigger the fuel cell to start power supply, the transmitting side controller controls the MOS tube to be switched on and off, and conversion of direct current of the fuel cell to alternating current is achieved, the first MOS tube T1 and the fourth MOS tube T4 are switched on, the second MOS tube T2 and the third MOS tube T3 are switched off, then the second MOS tube T2 and the third MOS tube T3 are switched on, the first MOS tube T1 and the fourth MOS tube T4 are switched off, so that the first inductor L1 and the first capacitor C1 achieve a resonance condition, the receiving side electric equipment resonates at the same frequency, alternating current is converted into direct current through a rectifying circuit (for example, a rectifying circuit composed of fifth to eighth diodes such as D5-D8 and ninth to twelfth diodes such as D9-D12), and then an electric filtering circuit L C (for example, a rectifying circuit composed of third inductor L and a third capacitor C3, a fifth inductor L and a fifth capacitor C5 are used for ensuring normal operation of the mains supply of the electric energy in the mains supply filtering equipment under the normal power outage condition.
Therefore, the second frequency selection module is formed by the second inductor and the second capacitor, the rectifying modules are formed by the first rectifying elements, the fourth rectifying elements and the third inductors, the filtering module is formed by the third capacitors, electromagnetic energy sent by the sending unit can be reliably received and converted into electric energy, then filtering processing and storage are carried out, and wireless charging of electric equipment is achieved.
Since the processing and functions implemented by the charging system of this embodiment substantially correspond to the embodiments, principles, and examples of the device shown in fig. 1, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
Through a large amount of experimental verifications, adopt the technical scheme of the utility model, through the wireless energy transmission topological structure that charges of fuel cell resonant coupling formula for the user can charge for with electrical apparatus through wireless transmission's mode, makes to remove wired battery charging outfit with electrical apparatus, has simplified charge structure, has also made things convenient for user's use.
According to the embodiment of the present invention, there is also provided a charging control method of a charging system corresponding to the charging system, as shown in fig. 5. The charging control method of the charging system may include: step S110 and step S120.
At step S110, it is determined by the control unit that one of the commercial power and the fuel cell in the power supply terminal supplies power, and the power supplied by the determined one of the power supplies is transmitted to the transmission unit.
Alternatively, the step S110 of determining, by the control unit, that one of the commercial power and the fuel cell in the power supply terminal supplies power, and transmitting the power supplied by the determined one of the power supplies to the transmitting unit may include any one of the following control situations.
The first control scenario: under the condition of mains supply, the mains supply is controlled to be converted into direct current through the AC-DC module, and the direct current obtained by conversion of the AC-DC module is controlled to be transmitted to the sending unit.
The second control scenario: under the condition that the mains supply is powered off, the control switch triggers the fuel cell to supply power, the fuel cell converts chemical energy into electric energy, and the electric energy converted by the fuel cell is controlled to be transmitted to the sending unit.
For example: under the condition of mains supply outage, the control switch is triggered to start the fuel cell to supply power, the fuel cell converts chemical energy into electric energy, and the electric energy is converted into electromagnetic energy through the wireless charging topological structure. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances. Therefore, wireless charging can be realized between the fuel cell and the user electrical appliance in a wireless energy transmission mode.
The third control scenario: under the condition that the mains supply is recovered after power failure, the control switch triggers the fuel cell to stop supplying power, and then the mains supply is controlled to continue supplying power, namely the mains supply is continuously controlled to be converted into direct current through the AC-DC module, and the direct current obtained by conversion of the AC-DC module is continuously controlled to be transmitted to the sending unit.
Therefore, the power supply switching control of the commercial power and the fuel cell in the power supply end is realized through the AC-DC module and the control switch, the fuel cell can be reliably charged under the condition of commercial power outage, and the switching control mode is reliable and safe.
At step S120, the transmitting unit converts the electric energy provided by the determined power supplier into electromagnetic energy, and transmits the converted electromagnetic energy to the at least one receiving unit, so as to implement wireless charging from the power supplier to the at least one receiving unit. Through a sending unit to at least one receiving unit wireless charging, not only can realize wireless charging more than one to, still be favorable to on a large scale recovery magnetic leakage to improve energy conversion efficiency.
The transmitting unit is a wireless transmitting unit of a power supply party in wireless charging. And the receiving unit is a wireless receiving unit on the side of the electrical equipment in wireless charging.
Therefore, the mains supply and the fuel cell are used as power supply ends, the receiving unit of at least one piece of electric equipment is charged by using the wireless charging technology, the mains supply or the fuel cell can be used for charging at least one piece of electric equipment, the continuity and the reliability of charging can be guaranteed by using the fuel cell under the condition of mains supply outage, and the convenience of charging the household electric equipment is greatly improved.
In an alternative embodiment, considering that the use of fuel cells as a backup power source for the user is a future trend, the charging of the electronic devices of the user will be gradually from wired to wireless. The utility model discloses a scheme provides a fuel charging system that wireless charging was used at family, can combine together fuel cell and wireless charging, makes the realization of the fuel cell that wireless charging was used at family possible.
Wherein, the utility model discloses a scheme can realize the wireless energy transmission topological structure design that charges of fuel cell resonant coupling formula for the family can charge for with electrical apparatus through wireless transmission's mode, makes with electrical apparatus have removed trip and naked plug of electric wire, and is more pleasing to the eye, convenient the removal. Furthermore, through combining together fuel cell and wireless charging, realize still can supplying power for equipment when having a power failure, make electrical equipment can be normal operating when the commercial power is shut off to, make fuel cell stand-by power supply make the commercial power supply under the outage circumstances supply power still guaranteed.
In an alternative embodiment, a specific implementation process of the scheme of the present invention can be exemplarily described with reference to the examples shown in fig. 2 to fig. 4.
Fig. 2 is a schematic overall structure diagram of an embodiment of the charging system of the present invention.
As shown in fig. 2, wireless charging between the fuel cell and the user's electrical appliance can be realized by wireless energy transmission.
Fig. 3 is a schematic diagram of a power supply structure of a commercial power and a fuel cell according to an embodiment of the charging system of the present invention.
As shown in fig. 3, utility power and fuel cells may be utilized for power. The utility power, such as AC220V, may output DC48V through an AC-DC module, and may also be connected to the Fuel Cell (FC) through a relay, with DC48V being connected to the relay and the Fuel Cell (FC), respectively.
Optionally, in the case of mains power supply, the mains power is converted by the AC-DC module and then converted into electromagnetic energy by the wireless charging topology. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances.
Optionally, in the case of a mains power outage, the relay is caused to lose power to trigger the fuel cell to start power supply, the fuel cell converts chemical energy into electric energy, and the electric energy is converted into electromagnetic energy through the wireless charging topology. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances.
And under the condition that the mains supply is cut off and recovered, the relay is electrified to act, the fuel cell is triggered to stop supplying power, the mains supply is changed into the mains supply power supply, and the mains supply is converted into electromagnetic energy through the wireless charging topological structure after being converted by the AC-DC module. The electromagnetic energy is received by each electric appliance and converted into electric energy by the resonance topology, and the electric energy is stored and used by the electric appliances.
Fig. 4 is a schematic diagram of a wireless charging topology of a fuel cell according to an embodiment of the present invention.
For the wireless charging technology, the conversion efficiency will not be very high due to the inevitable existence of magnetic leakage, which greatly limits the development of the wireless technology. And the large-scale magnetic flux leakage recovery technology is favorable for improving the conversion efficiency and promoting the development of the wireless charging technology. For example: the net-shaped structure is embedded into the wall body and the ceiling, and the leaked magnetic field changes, so that current is generated through the net-shaped structure, electric energy is recovered, the purpose of magnetic leakage recovery is achieved, the obtained electric energy is converted into magnetic energy again to be used by power supply equipment, and the purpose of improving the conversion efficiency is achieved.
In fig. 4, the left end is the transmission side and the right end is the reception side.
In fig. 4, the transmitting side may include a power supply, first to fourth MOS transistors such as MOS transistors T1-T4, first to fourth diodes such as diodes D1-D4, a first inductor L1, and a first capacitor C1.
The power supply VG1 can be used as a main power supply when the commercial power exists, if the commercial power is cut off, the power supply can be supplied by a Fuel Cell (FC). the first to fourth MOS tubes such as MOS tubes T1-T4 form a bridge type driving circuit which plays a role of adjusting the frequency to send out electromagnetic energy for receiving side to receive, the first to fourth diodes such as diodes D1-D4 are used as body diodes of the MOS tubes T1-T4 and are protection elements to prevent the MOS tubes from being damaged by strong back electromotive force, the first inductor L1 and the first capacitor C1 form a frequency selection module.
In fig. 4, only two receiving sides, such as the first receiving side and the second receiving side, are arranged at the right end, and the actual application can be more in household electric devices, that is, one-to-many wireless charging can be realized.
Specifically, the first receiving side may include fifth to eighth diodes such as D5-D8, a second inductor L2 and a second capacitor C2, a third inductor L3 and a third capacitor C3, a first battery V1 and a first load R1. the second receiving side may include ninth to twelfth diodes such as D9-D12, a fourth inductor L4 and a fourth capacitor C4, a fifth inductor L5 and a fifth capacitor C5, a second battery V2 and a second load R2.
The fifth to twelfth diodes, such as diodes D5-D12, may perform a rectifying function, the second inductor L2 and the second capacitor C2, the fourth inductor L4 and the fourth capacitor C4, and the like, are frequency-selective modules, the third inductor L3 and the third capacitor C3, the fifth inductor L5 and the fifth capacitor C5 form a filter circuit, the first battery V1 and the second battery V2 may be used as energy storage modules inside electrical appliances, the first load R1 and the second load R2 may represent electrical appliances.
In specific implementation, the conditions that must be satisfied to achieve wireless charging are: the transmitting device (e.g. transmitting side) and the receiving device (e.g. receiving side) are at the same resonance point, and the resonance frequency is
To satisfy the consistent resonant frequency, it is necessary to ensure that the first inductor L1, the second inductor L2, and the fourth inductor L4 have equal inductance values, and the first capacitor C1, the second capacitor C2, and the fourth capacitor C4 are equivalent capacitors.
When the commercial power is cut off, the relay is in power failure to trigger the fuel cell to start power supply, the transmitting side controller controls the MOS tube to be switched on and off, and conversion of direct current of the fuel cell to alternating current is achieved, the first MOS tube T1 and the fourth MOS tube T4 are switched on, the second MOS tube T2 and the third MOS tube T3 are switched off, then the second MOS tube T2 and the third MOS tube T3 are switched on, the first MOS tube T1 and the fourth MOS tube T4 are switched off, so that the first inductor L1 and the first capacitor C1 achieve a resonance condition, the receiving side electric equipment resonates at the same frequency, alternating current is converted into direct current through a rectifying circuit (for example, a rectifying circuit composed of fifth to eighth diodes such as D5-D8 and ninth to twelfth diodes such as D9-D12), and then an electric energy filtering circuit L C (for example, a third inductor L and a third capacitor C3, a fifth inductor L and a fifth capacitor C5 are used for ensuring normal operation of the commercial power storage and the electric energy of the electric filtering equipment under the normal power cut-off condition.
Since the processing and functions implemented by the method of the present embodiment substantially correspond to the embodiments, principles, and examples of the charging system, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of the present embodiment.
Through a large amount of experimental verifications, adopt the technical scheme of this embodiment, through combining together fuel cell and wireless charging, realize still can give equipment power supply when having a power failure, make electrical equipment normal operating when the commercial power is turn-off for fuel cell stand-by power supply makes the power supply still guaranteed under the commercial power outage condition, has promoted the convenience and the reliability of charging.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A charge control device, characterized by comprising: the device comprises a power supply end, a control unit and a sending unit; a power supply terminal, comprising: commercial power and fuel cells; wherein,
the control unit is used for determining that one power supply party of commercial power and the fuel cell in the power supply end supplies power and transmitting the electric energy provided by the determined power supply party to the sending unit;
the transmitting unit is used for converting electric energy provided by a determined power supplier into electromagnetic energy and transmitting the converted electromagnetic energy to the at least one receiving unit so as to realize wireless charging from the power supply end to the at least one receiving unit;
the wireless charging system comprises a transmitting unit, a charging unit and a charging unit, wherein the transmitting unit is a wireless transmitting unit of a power supply party in wireless charging; and the receiving unit is a wireless receiving unit on the side of the electrical equipment in wireless charging.
2. The charge control device according to claim 1, wherein the control unit includes: an AC-DC module and a control switch;
the control unit determines that one of commercial power and a fuel cell in a power supply terminal supplies power and transmits the power supplied by the determined power supply to the sending unit, and comprises the following steps:
under the condition of mains supply, the mains supply is controlled to be converted into direct current through the AC-DC module, and the direct current obtained by conversion of the AC-DC module is controlled to be transmitted to the sending unit;
under the condition that the mains supply is powered off, the control switch triggers the fuel cell to supply power, the fuel cell converts chemical energy into electric energy, and the electric energy converted by the fuel cell is controlled to be transmitted to the sending unit;
and under the condition of power failure recovery of the mains supply, after the control switch triggers the fuel cell to stop supplying power, the mains supply is controlled to continue supplying power.
3. The charge control device according to claim 2, wherein the control switch includes: a relay;
the coil of the relay and the commercial power form a loop, and the normally open contact of the relay and the fuel cell form a loop.
4. An electrical charging system, comprising: the charge control device according to any one of claims 1 to 3, and a receiving unit; wherein,
and the receiving unit is used for receiving the electromagnetic energy transmitted by the transmitting unit and converting the received electromagnetic energy into electric energy so as to realize wireless charging of the electrical equipment to which the receiving unit belongs.
5. The charging system according to claim 4, wherein the transmission unit includes: the frequency modulation device comprises a first frequency selection module and a frequency modulation module; wherein,
the first frequency selection module is used for determining the resonant frequency of the transmitting side;
and the frequency modulation module is used for converting the electric energy provided by the determined power supplier into electromagnetic energy based on the determined transmitting side resonant frequency and transmitting the converted electromagnetic energy to at least one receiving unit.
6. The charging system of claim 5, wherein the first frequency selection module comprises: a first inductor and a first capacitor;
a frequency modulation module comprising: the first to fourth switching tubes and the first to fourth body diodes are connected with the first control end and the second control end of each of the first to fourth switching tubes in parallel; the first switch tube, the second switch tube, the third switch tube and the fourth switch tube form a bridge type driving circuit, and the first inductor and the first capacitor are arranged between the common end of the first switch tube and the second switch tube and the common end of the third switch tube and the fourth switch tube in the bridge type driving circuit in parallel.
7. The charging system according to any one of claims 4 to 6, wherein the receiving unit includes: the second frequency selection module, the rectification module, the filtering module and the storage battery are arranged; wherein,
the second frequency selection module is used for determining the resonant frequency of the receiving side; wherein, the resonance frequency of the receiving side is the same as the resonance frequency of the transmitting side;
a rectification module for receiving the electromagnetic energy transmitted by the transmission unit based on the determined receiving-side resonant frequency and converting the received electromagnetic energy into electric energy;
the filtering module is used for filtering the converted electric energy;
and the storage battery is used for storing the electric energy obtained by the filtering processing.
8. The charging system of claim 7, wherein the second frequency selection module comprises: a second inductor and a second capacitor;
a rectifier module, comprising: first to fourth rectifying elements constituting a rectifying bridge; the second inductor and the second capacitor are arranged between the common end of the first rectifying element and the second rectifying element and the common end of the third rectifying element and the fourth rectifying element in the rectifying bridge in parallel;
the filtering module comprises an L C filtering circuit formed by a third inductor and a third capacitor, and the L C filtering circuit is arranged on the output side of a rectifying bridge formed by the first rectifying element, the second rectifying element and the fourth rectifying element.
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