CN214154160U - Wireless charging platform - Google Patents
Wireless charging platform Download PDFInfo
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- CN214154160U CN214154160U CN202022048901.1U CN202022048901U CN214154160U CN 214154160 U CN214154160 U CN 214154160U CN 202022048901 U CN202022048901 U CN 202022048901U CN 214154160 U CN214154160 U CN 214154160U
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- battery pack
- transmitting coil
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- communication module
- charging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive loop type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to a wireless charging platform. The wireless charging platform comprises a plurality of battery packs with different rated voltages and a wireless charger for wirelessly charging the battery packs, the ratio of the rated voltage of each battery pack to the number of turns of a receiving coil of each battery pack is equal to the ratio of the default voltage to the number of turns of a transmitting coil of the wireless charger, and the transmitting coils charge the plurality of battery packs simultaneously under the action of the default voltage.
Description
Technical Field
The invention relates to the field of wireless charging, in particular to a wireless charging platform.
Background
Along with the development of technique, intelligent tool is more and more diversified, and people also increase gradually the demand of smart machine, for example, traditional wired charging technique charging wire is numerous and diverse, and plug many times probably causes the damage to smart machine. Therefore, wireless charging technology is in force. However, in practical applications, the smart device usually has a rated charging voltage, and the wireless charger often can only charge the device having a certain characteristic rated charging voltage, and cannot simultaneously charge a plurality of devices having different rated charging voltages.
Disclosure of Invention
In view of the above, it is necessary to provide a wireless charging platform, a wireless charger and a wireless charging method thereof, aiming at the problem that the existing wireless charger cannot simultaneously charge a plurality of devices with different rated voltages.
A wireless charging platform comprises a first battery pack, a second battery pack and a wireless charger for charging the first battery pack and the second battery pack;
the wireless charger comprises a sending end communication module, a control module and a transmitting coil; the sending end communication module is used for establishing a communication relation with the first battery pack and the second battery pack and receiving identification information of the first battery pack and the second battery pack; the control module is connected with the transmitting end communication module, receives the identification information of the first battery pack and the identification information of the second battery pack, and provides a default voltage U0 for the transmitting coil; the transmitting coil sends charging electromagnetic signals to the first battery pack and the second battery pack under the action of the default U0;
the first battery pack comprises a first receiving end communication module, a first receiving coil and a first battery unit, the first receiving end communication module is in wireless connection with the sending end communication module and sends characteristic information of the first battery pack, and the first receiving coil receives the charging electromagnetic signal to charge the first battery unit;
the second battery pack comprises a second receiving end communication module, a second receiving coil and a second battery unit, the second receiving end communication module is in wireless connection with the sending end communication module and sends characteristic information of the second battery pack, and the second receiving coil receives the charging electromagnetic signal to charge the second battery unit;
wherein the rated voltage U2 of the second battery pack is different from the rated voltage U1 of the first battery pack, the ratio of the default voltage U0 of the transmitting coil to the number of turns N0 of the transmitting coil is equal to the ratio of the rated voltage U1 of the first battery pack to the number of turns N1 of the first receiving coil, and the ratio of the default voltage U0 of the transmitting coil to the number of turns N0 of the transmitting coil is equal to the ratio of the rated voltage U2 of the second battery pack to the number of turns N2 of the first receiving coil, i.e., U0/N0= U1/N1= U2/N2.
In one embodiment, the wireless connection between the sending-end communication module and the first receiving-end communication module or the second receiving-end communication module may be implemented by bluetooth communication, or wireless radio frequency communication, or voltage waveform loaded on the transmitting coil.
In one embodiment, the control module comprises a current adjusting unit for adjusting the magnitude of the current in the transmitting coil.
In one embodiment, the wireless charger further comprises a prompting module for prompting the working state of the wireless charger to a user.
In one embodiment, the wireless charger further comprises a user input interface for receiving a charging indication signal input by a user.
The wireless charger further comprises a cutting unit connected with the control module, and the control module controls the cutting unit to enable the transmitting coil to be powered off.
A wireless charger, comprising: the device comprises a transmitting coil, a control module and a transmitting end communication module;
the control module is connected with the transmitting coil and provides input voltage for the transmitting coil so that the transmitting coil can send charging electromagnetic signals under the action of the input voltage;
the sending end communication module is connected with the control module, detects an external battery pack and establishes a communication relation with at least one external battery pack;
the control module is internally provided with a preset mark, the external battery pack comprises an identification battery pack and a non-identification battery pack, the identification battery pack has an identification mark which is the same as the preset mark, and the non-identification battery pack has an identification mark which is different from the preset mark;
the sending end communication module obtains an identification mark of the external battery pack, the control module compares the identification mark with a preset mark, and when the identification mark of each battery pack is the same as the preset mark, the control module judges that the battery packs are identification battery packs, the control module provides input voltage for the transmitting coil to charge the identification battery packs, and the input voltage is default voltage;
and the ratio of the default voltage of the transmitting coil to the number of turns of the transmitting coil is the same as the ratio of the rated voltage of each identification battery pack to the number of turns of the receiving coil of the identification battery pack.
In one embodiment, the sending-end communication module obtains the number of the identification battery packs, and the control module adjusts the charging current of the transmitting coil according to the number of the identification battery packs so as to adjust the power of the transmitting coil.
In one embodiment, the wireless charger further comprises a prompting module, the prompting module is connected with the control module, and when the control module judges that the identification mark of one of the external battery packs is different from the preset mark, the prompting module sends a prompt.
In one embodiment, the sending-end communication module obtains the number of the external battery packs, when the number of the external battery packs is one and the external battery packs are non-identification battery packs, if the prompt module receives a charging indication signal, the prompt module sends the charging indication signal to the control module, and the control module controls the transmitting coil to be electrified according to the charging indication signal so as to charge the non-identification battery packs.
In one embodiment, the control module is further configured to adjust the input voltage of the transmitting coil such that a ratio of the input voltage of the transmitting coil to the number of turns of the transmitting coil is equal to a ratio of a rated voltage of the non-identification battery pack to the number of turns of the receiving coil.
In one embodiment, after the wireless charger finishes charging the non-identification battery pack, the control module adjusts the input voltage of the transmitting coil to the default voltage.
In one embodiment, when the wireless charger charges the non-identification battery pack, if the sending-end communication module detects the identification battery pack, the control module controls the sending coil to be powered off, and the prompting module sends a prompt.
In one embodiment, the sending-end communication module includes a bluetooth communication module or a radio frequency communication module.
A wireless charging platform comprises the wireless charger;
the wireless charging platform further comprises at least one identification battery pack, and the wireless charger charges the at least one identification battery pack under the action of the default voltage.
A charging method of a wireless charger, wherein the wireless charger comprises a transmitting coil and is used for charging at least one external battery pack, the external battery pack is provided with an identification battery pack and a non-identification battery pack, the wireless charger is provided with a preset mark, the identification battery pack is provided with an identification mark which is the same as the preset mark, and the non-identification battery pack is provided with an identification mark which is different from the preset mark, and the method comprises the following steps:
acquiring an identification mark of at least one external battery pack;
judging whether the identification mark is the same as the preset mark or not;
when the identification mark of each external battery pack is the same as the preset mark, judging that the external battery packs are the identification battery packs, and inputting default voltage to the transmitting coil to enable the transmitting coil to charge at least one identification battery pack, wherein the ratio of the default voltage of the transmitting coil of the wireless charger to the number of turns of the transmitting coil is equal to the ratio of the rated voltage of each identification battery pack to the number of turns of the receiving coil of the identification battery pack.
In one embodiment, after the inputting the default voltage to the transmitting coil to make the transmitting coil charge the at least one identification battery pack, the method further comprises:
acquiring the number of the identification battery packs;
and adjusting the charging current of the transmitting coil according to the number of the identification battery packs.
In one embodiment, the determining whether the identification mark is the same as the preset mark further includes:
and when the identification mark of one of the external battery packs is different from the preset mark, judging that the battery pack is the non-identification battery pack, and controlling the transmitting coil to be powered off.
In one embodiment, after controlling the transmitting coil to be powered off, the method further comprises the following steps:
acquiring the number of the non-identification battery packs;
when the number of the non-identification battery packs is 1, judging whether a charging indication signal is received or not;
when the charging indication signal is received, acquiring the rated voltage and the number of turns of a receiving coil of the non-identification battery pack;
and adjusting the input voltage of the transmitting coil so that the ratio of the input voltage of the transmitting coil to the number of turns of the transmitting coil is equal to the ratio of the rated voltage of the non-identification battery pack to the number of turns of the receiving coil.
In one embodiment, the method further comprises the following steps:
and sending out a prompt when the charging indication signal is not received.
In one embodiment, the adjusting the input voltage of the transmitting coil further comprises:
detecting whether the charging of the non-identification battery pack is finished;
and when the charging of the non-identification battery pack is finished, adjusting the input voltage of the transmitting coil to a default voltage.
In one embodiment, the method further comprises the following steps:
acquiring an identification mark when the non-identification battery pack is in a charging state, and judging whether the identification mark is the same as the preset mark;
and when the identification mark is the same as the preset mark, sending out a prompt.
Above-mentioned wireless charger detects external battery package through sending end communication module to obtain external battery package identification mark, whether each identification mark that control module judges to receive all is the same with the mark of predetermineeing, if all the same, can judge that each battery package of connection is the battery package with wireless charger acquiescence matching, then the steerable transmitting coil circular telegram of control module promptly, transmitting coil charges for a plurality of battery packages that have different rated voltage under default voltage's effect.
Drawings
Fig. 1 is a schematic diagram of a wireless charger module according to an embodiment of the present application;
fig. 2 is a schematic diagram of a wireless charger module according to another embodiment of the present application;
fig. 3 is a flowchart of a charging method of a wireless charger according to an embodiment of the present application;
fig. 4 is a schematic diagram of a wireless charging platform according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, an embodiment of the present application provides a wireless charger, which includes a transmitting coil 100, a control module 200, and a transmitting-end communication module 300.
The transmitting coil 100 is used for transmitting a charging electromagnetic signal under the action of an input voltage. The control module 200 is connected to the transmitting coil 100 and provides the aforementioned input voltage to the transmitting coil 100. The transmitting end communication module 300 is connected to the control module 200, and is configured to detect an external battery pack and establish a communication relationship with at least one external battery pack.
The control module 200 is provided with a preset flag. The external battery pack comprises an identification battery pack and a non-identification battery pack, the identification battery pack has an identification mark which is the same as the preset mark, and the non-identification battery pack has an identification mark which is different from the preset mark. The wireless charger can charge a plurality of identification battery packs but cannot charge a plurality of non-identification battery packs. When the transmitting-end communication module 300 receives the identification mark of the external battery pack, the identification mark is transmitted to the control module 200. The control module 200 compares each received identification mark with a preset mark, and when the control module 200 judges that each received identification mark is the same as the preset mark, it can be judged that each external battery pack establishing a connection relationship with the wireless charger is an identification battery pack. The control module 200 inputs a default voltage to the transmitting coil 100 to cause the transmitting coil 100 to charge the at least one identification battery pack.
The ratio of the rated voltage of the receiving coil to the number of turns of the receiving coil of each identification battery pack is the same as the ratio of the default voltage of the transmitting coil 100 to the number of turns of the transmitting coil, and it can be understood that the rated voltage and the number of turns of the receiving coil of different identification battery packs are different. Further, the transmitting coil 100 may charge a plurality of identification battery packs having different rated voltages under the action of the default voltage.
When the wireless charger charges for above-mentioned sign battery package, carry out constant current charging earlier at the initial stage of charging, then get into constant voltage charging, prevent that the initial stage of charging heavy current from burning out the charger, prevent simultaneously that great charging current from causing the injury to the battery package.
The wireless charger provided by the above embodiment detects the external battery pack through the sending terminal communication module 300, and obtains the external battery pack identification mark, the control module 200 determines whether each received identification mark is the same as the preset mark, if so, it can be determined that each connected battery pack is the battery pack matched with the wireless charger by default, the control module can control the transmitting coil to be powered on, and the transmitting coil charges a plurality of battery packs with different rated voltages under the action of the default voltage.
In one embodiment, the transmitting-end communication module 300 may obtain the number of identified battery packs, and the control module 200 adjusts the charging current according to the number of identified battery packs to adjust the power of the transmitting coil.
Specifically, after the control module 200 provides the default voltage to the transmitting coil 100, in order to improve the charging efficiency, the transmitting-end communication module 300 may further obtain the number of the identified battery packs and send the identified battery packs to the control module 200. The control module 200 obtains the number of battery packs and adjusts the charging current input to the transmitting coil 100. Because the charging power is equal to the product of the charging current and the charging voltage, and the charging voltage is the default voltage, the control module 200 can improve the charging power by improving the charging current, so as to improve the charging efficiency, so that the charging process can be quickly completed when the wireless charger charges a plurality of identification battery packs.
Referring to fig. 2, in one embodiment, the wireless charger further includes a prompt module 400 connected to the control module 200, and when the control module 200 determines that the identification mark of one of the external battery packs is different from the preset mark, the prompt module 400 sends a prompt.
Specifically, the transmitting-end communication module 300 receives an identification mark of at least one external battery pack and transmits the identification mark to the control module 400. The control module 400 compares at least one identification mark with a preset mark, and when one identification mark is different from the preset mark, the control module 200 controls the prompt module 400 to send a prompt to prompt a user that a non-identification battery pack exists in an external battery pack connected with the wireless charger. The user can remove the non-identification battery pack according to the prompt sent by the prompt module 400, so that the wireless charger charges the rest identification battery packs. That is, the wireless charger preferentially charges the identification battery pack. In this embodiment, the prompt module 400 can perform the prompting in a sound or light manner.
In one embodiment, the sending-end communication module 300 obtains the number of external battery packs, when the number of external battery packs is one and the external battery packs are non-identification battery packs, at this time, if the prompt module 400 receives a charging indication signal, the prompt module 400 sends the charging indication signal to the control module 200, and the control module 200 controls the transmitting coil 100 to be powered on according to the charging indication signal, so as to charge the non-identification battery packs.
In this embodiment, the charging indication signal is a signal input by a user. When the control module 200 recognizes that the wireless charger is connected to only one non-identification battery pack, the control module 200 controls the prompt module 400 to send a prompt to prompt the user. If the user sends a charging indication signal to the charger to indicate that the wireless charger charges the non-identification battery pack, the control module 200 may control the transmitting coil 100 to be powered on according to the charging indication signal.
Further, since the voltage input to the transmitting coil 100 by the control module 200 is the default voltage, and the ratio of the default voltage to the number of turns of the transmitting coil 100 is not equal to the ratio of the rated voltage of the non-identification battery pack to the number of turns of the receiving coil, the transmitting coil 100 cannot charge the non-identification battery pack under the action of the default voltage, and therefore, the control module 200 needs to adjust the input voltage of the transmitting coil 100. The sending end communication module 300 can receive the rated voltage and the number of turns of the receiving coil of the unidentified battery pack, and the control module 200 adjusts the input voltage of the transmitting coil 100 according to the rated voltage, the number of turns of the receiving coil and the number of turns of the transmitting coil 100 of the unidentified battery pack, so that the ratio of the input voltage of the transmitting coil 100 to the number of turns of the transmitting coil is equal to the ratio of the rated voltage of the unidentified battery pack to the number of turns of the receiving coil. When the transmitting coil 100 is charged for the non-identified battery pack, the control module 200 adjusts the input voltage of the transmitting coil 100 back to the default voltage, so that the transmitting coil 100 can charge a plurality of identified battery packs at the same time when charging next time.
Further, when the transmitting coil 100 charges a non-identification battery pack, if the transmitting-end communication module 300 detects an external battery pack and the control module 200 determines that the external battery pack is an identification battery pack, the control module 200 controls the transmitting coil 100 to be powered off and controls the prompt module 400 to send a prompt to prompt a user. When the user removes the non-identification battery pack, the control module 200 may adjust the input voltage of the transmitting coil 100 to a default voltage, so that the transmitting coil 100 preferentially charges the identification battery pack.
In one embodiment, during the charging process, the transmitting-end communication module 300 may further obtain voltage information, temperature information, and the like of the battery pack being charged, and transmit the voltage information and the temperature information to the control module 200. If the control module 200 determines that the battery pack is overcharged or over-heated, the control module 200 controls the transmitting coil 100 to be powered off to stop charging the battery pack.
The transmitting-end communication module 300 in the above embodiments may be a bluetooth communication module or a radio frequency communication module.
Yet another embodiment of the present application provides a wireless charging platform comprising the aforementioned wireless charger and at least one identification battery pack. Each identification battery pack is provided with a receiving end communication module which can communicate with the sending end communication module, and the receiving end communication module can send identification information, charging voltage, charging temperature and other information of each identification battery pack to the sending end communication module. The at least one identification battery pack and the wireless charger can be used in a matched mode, and the wireless charger can charge the at least one identification battery pack under the action of default voltage.
According to the wireless charging platform, as the ratio of the default voltage of the transmitting coil of the wireless charger to the number of turns of the transmitting coil is the same as the ratio of the rated voltage of the receiving coil of each battery pack to the number of turns of the receiving coil, the control module can control the transmitting coil to charge a plurality of identification battery packs with different rated voltages under the action of the default voltage.
Referring to fig. 3, another embodiment of the present application provides a charging method of a wireless charger. The wireless charger comprises a transmitting coil, and can generate a charging electromagnetic signal under the action of input voltage and charge an external battery pack. The external battery pack identifies the battery pack and the non-identification battery pack. The wireless charger is provided with a preset mark, the identification battery pack is provided with an identification mark which is the same as the preset mark, and the non-identification battery pack is provided with an identification mark which is different from the preset mark. The charging method comprises the following steps:
s100: and acquiring an identification mark of at least one external battery pack.
The wireless charger comprises a sending end communication module, and each battery pack comprises a receiving end communication module. The transmitting end communication module can acquire the identification mark of the corresponding battery pack transmitted by the receiving end communication module.
S200: and judging whether the identification mark is the same as the preset mark.
The wireless charger includes a control module. The sending end communication module sends the received identification mark to the control module, the control module stores a preset mark of the wireless charger, and the control module is used for judging whether the received identification mark is the same as the preset mark.
S300: and when the identification mark of each external battery pack is the same as the preset mark, judging that the external battery packs are all identification battery packs, and inputting default voltage to the transmitting coil to enable the transmitting coil to charge at least one identification battery pack.
If the control module judges that the identification mark of each battery pack is the same as the preset mark, the control module judges that each external battery pack is an identification battery pack. Furthermore, the control module can input default voltage to the transmitting coil, and the transmitting coil charges the at least one identification battery pack under the action of the default voltage.
In this embodiment, the ratio of the default voltage of the transmitting coil of the wireless charger to the number of turns of the transmitting coil is equal to the ratio of the rated voltage of each identification battery pack to the number of turns of the receiving coil of the identification battery pack. Therefore, when the transmitting coil of the wireless charger inputs the default voltage, the wireless charger can charge the plurality of identification battery packs.
In one embodiment, the method further comprises the following steps after inputting a default voltage to the transmitting coil to enable the transmitting coil to charge at least one of the identification battery packs: acquiring the number of the marked battery packs; and adjusting the charging current of the transmitting coil according to the number of the identification battery packs.
Specifically, the sending-end communication module obtains the number of the identified battery packs and transmits the number to the control module. For improving charging efficiency, the control module adjusts the charging current of the transmitting coils according to the quantity, so that the charging power can be adjusted, and the improvement of the power can drive the improvement of the charging efficiency.
In one embodiment, after determining whether the identification mark is the same as the preset mark, the method further includes: and when the identification mark of one of the external battery packs is different from a preset mark, judging that the battery pack is the non-identification battery pack, controlling the transmitting coil to be powered off and sending a prompt.
If the control module judges that the identification mark of one battery pack is different from the preset mark, the different battery pack is a non-identification battery pack, and the wireless charger cannot charge the non-identification battery pack under the action of default voltage because the ratio of the rated voltage of a receiving coil of the non-identification battery pack to the number of turns of the receiving coil and the ratio of the default voltage of a transmitting coil to the number of turns of a receiving coil are different, and the control module controls the wireless charger to power off. Furthermore, after the transmitting coil is controlled to be powered off, the number of the non-identification battery packs is obtained. When the number of the non-identification battery packs is one, the prompt module judges whether a charging indication signal is received. And after the prompt module receives the charging indication signal, the sending end communication module obtains the rated voltage of the non-identification battery pack and the number of turns of the receiving coil. The control module adjusts the input voltage of the transmitting coil according to the rated voltage of the non-identification battery pack and the number of turns of the receiving coil, so that the ratio of the input voltage of the transmitting coil to the number of turns of the transmitting coil is equal to the ratio of the rated voltage of the non-identification battery pack to the number of turns of the receiving coil, and the transmitting coil can charge the non-identification battery pack.
Further, the control module detects whether the charging of the non-identification battery pack is finished, and if the charging is finished, the control module adjusts the input voltage of the transmitting coil to the default voltage
In another embodiment, if the prompting module does not receive the charging indication signal, the prompting module sends a prompt to prompt the user.
In one embodiment, when the non-identification battery pack is charged, if the identification battery pack is detected, the charging of the non-identification battery pack is stopped, and a prompt is sent.
According to the charging method of the wireless charger, the identification marks of the external charger are obtained and judged, and if each identification mark is the same as the preset mark, the transmitting coil is controlled to charge each identification battery pack with default voltage, so that synchronous charging of a plurality of battery packs is realized in real time, and the charging efficiency is improved.
Referring to fig. 4, yet another embodiment of the present application provides a wireless charging platform including two battery packs and a wireless charger to charge the battery packs. The two battery packs are a first battery pack 20 and a second battery pack 30, respectively, the first battery pack 20 includes a first receiving coil 21, a first battery unit 22 and a first receiving end communication module 23, and the second battery pack 30 includes a second receiving coil 31, a second battery unit 32 and a second receiving end communication module 33. The wireless charger 10 includes a transmitting coil 100, a control module 200, and a transmitting-end communication module 300. The transmitting-end communication module 300 is wirelessly connected to the first receiving-end communication module 23 and the second receiving-end communication module 33, respectively, to establish a communication relationship between the wireless charger 10 and the first battery pack 20 and the second battery pack 30, and the transmitting-end communication module 300 receives the identification information of the first battery pack 30 from the first receiving-end communication module 23, and receives the identification information of the second battery pack 20 from the second receiving-end communication module 33, and outputs the identification information to the control module 200. The identification information of the first and second battery packs 20 and 30 includes identification marks of the battery packs. The control module 200 is provided with a preset mark, the first battery pack 20 and the second battery pack 30 have the same identification mark as the preset mark, and when the control module receives the identification marks of the first battery pack 20 and the second battery pack 30, the control module 200 provides the default voltage U0 to the transmitting coil. The transmitting coil 100 sends out a charging electromagnetic signal under the action of a default voltage U0. The first receiving coil 21 charges the first battery unit 22 when receiving the charging electromagnetic signal transmitted by the transmitting coil 100, and the second receiving coil 31 charges the second battery unit 32 when receiving the charging electromagnetic signal transmitted by the transmitting coil 100.
Wherein the rated voltage U2 of the second battery pack 30 is different from the rated voltage U1 of the first battery pack 20, the ratio of the default voltage U0 of the transmitting coil 100 to the number of turns N0 of the transmitting coil 100 is equal to the ratio of the rated voltage U1 of the first battery pack 20 to the number of turns N1 of the first receiving coil, and the ratio of the default voltage U0 of the transmitting coil 100 to the number of turns N0 of the transmitting coil is equal to the ratio of the rated voltage U2 of the second battery pack 30 to the number of turns N2 of the first receiving coil, that is, the relationship between the ratio of the default voltage U0 of the transmitting coil 100 to the number of turns N0, the ratio of the rated voltage U1 of the first battery pack 20 to the number of turns N1 of the first receiving coil 21, and the ratio of the rated voltage U2 of the second battery pack 30 to the number of turns N2 of the second receiving coil 31 is: U0/N0= U1/N1= U2/N2, wherein U1 is not equal to U2. Since the rated voltage U1 of the first battery pack 20 is not equal to the rated voltage U2 of the second battery pack 30, the number of turns N1 of the first receiving coil 21 is different from the number of turns N2 of the second receiving coil 31.
In the wireless charging platform provided by the above embodiment, the transmitting coil 100 can simultaneously charge the first battery pack 20 and the second battery pack 30 with different rated voltages under the action of the default voltage U0.
In the above embodiment, the wireless connection between the transmitting-end communication module 300 and the first receiving-end communication module 23 or the second receiving-end communication module 33 may be implemented by bluetooth communication, or wireless radio frequency communication, or voltage waveform loading on the transmitting coil 100.
Yet another embodiment of the present application provides a wireless charging platform comprising the aforementioned wireless charger 10, a first battery pack 20, a second battery pack 30, and at least one identification battery pack, each having the same identification indicia as the first and second battery packs but a voltage rating different from the voltage rating of the first and second battery packs. Each identification battery pack is provided with a receiving end communication module, a receiving coil and a battery unit, the receiving coil receives the charging electromagnetic signal sent by the transmitting coil to charge the battery unit, and the receiving end communication module sends characteristic information such as the identification mark, the charging voltage and the charging temperature of each identification battery pack to the sending end communication module.
The sending end communication module sends the received identification information of each identification battery pack to the control module, the control module provides input voltage U with the same value as the default voltage U0 in the previous embodiment to the transmitting coil according to the received identification mark of each identification battery pack, and the transmitting coil charges the first battery pack, the second battery pack and at least one identification battery pack under the action of the input voltage U.
Wherein, the ratio of the rated voltage of each identification battery pack to the number of turns of the receiving coil is the same as the ratio of the default voltage U0 of the transmitting coil 100 to the number of turns N0 of the coil, it can be understood that the rated voltage and the number of turns of the receiving coil are different for different identification battery packs. Further, both the first battery pack 20 and the second battery pack 30 may be regarded as one kind of identification battery pack.
According to the wireless charging platform described in the two embodiments, since the ratio of the default voltage U0 of the transmitting coil of the wireless charger to the number of turns of the coil is the same as the rated voltage of each identification battery pack and the number of turns of the receiving coil, the wireless charger can charge a plurality of identification battery packs with different rated voltages in the wireless charging platform without adjusting the input voltage of the transmitting coil.
In one embodiment, the control module 200 includes a current adjusting unit, and the control module 200 may count the number of the identified battery packs and control the current adjusting unit to adjust the power of the transmitting coil 100 according to the number of the identified battery packs.
Specifically, the sending-end communication module 300 sends the received identification mark of each identified battery pack to the control module, and the control module counts the number of the identified battery packs to be charged according to the number of the received identification marks. After the control module 200 provides the default voltage U0 to the transmitting coil 100, in order to improve the charging efficiency, the control module 200 controls the current adjusting unit to adjust the charging current input to the transmitting coil 100 according to the number of the identified battery packs that need to be charged. Since the charging power is equal to the product of the charging current and the charging voltage, and the charging voltage is the default voltage U0 and is fixed, the control module 200 can improve the charging power by improving the charging current, so as to improve the charging efficiency, so that the wireless charger 10 can complete charging quickly when charging a plurality of identification battery packs simultaneously.
In one embodiment, the wireless charger 10 further includes a disconnection unit, which connects the transmitting coil 100 and the control module 200, and during the charging process, the transmitting-end communication module 300 receives battery pack status information, such as voltage information and temperature information, of each identified battery pack, and sends the battery pack status information to the control module 200. The control module 200 receives the state information of the battery pack to determine whether the battery pack is abnormal, such as overcharge or over-temperature, and when the battery pack is determined to be abnormal, the control module 200 controls the cut-off unit to cut off the power of the transmitting coil 100, and stops charging the battery pack.
In one embodiment, the wireless charger 10 further includes a prompt module, which is connected to the control module 200, and during the charging process, the sending-end communication module 300 receives battery pack status information, such as voltage information and temperature information, of each identified battery pack, and sends the battery pack status information to the control module 200. The control module 200 receives the battery pack state information to judge whether the battery pack is abnormal such as overcharge or over-temperature, when the battery pack is judged to be abnormal, the control module 200 controls the prompting module to send out a prompt to remind a user that the battery pack currently charged is abnormal, and the user can remove the battery pack with a fault according to the prompt of the prompting module so that the wireless charger charges the rest normal battery packs. In this embodiment, the prompt module may be an LED lamp or a display screen.
In one embodiment, the wireless charger 10 further comprises a charging control module, when the wireless charger charges the identification battery pack, the wireless charger performs constant-current charging at the initial stage of charging and then performs constant-voltage charging. Specifically, the charger is prevented from being burnt out by heavy current in the initial charging stage, and meanwhile, the battery pack is prevented from being damaged by large charging current.
In one embodiment, the wireless charger 10 further includes a user input interface for receiving a charging indication signal input by a user, the user input interface is connected to the control module 200, and the control module 200 controls the transmitting coil 100 to be powered on according to the charging indication signal input by the user to start charging the identified battery pack.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A wireless charging platform comprising a first battery pack and a second battery pack, and a wireless charger for charging the first battery pack and the second battery pack,
the wireless charger comprises a sending end communication module, a control module and a transmitting coil; the sending end communication module is used for establishing a communication relation with the first battery pack and the second battery pack and receiving identification information of the first battery pack and the second battery pack; the control module is connected with the transmitting end communication module, receives the identification information of the first battery pack and the identification information of the second battery pack, and provides a default voltage U0 for the transmitting coil; the transmitting coil sends charging electromagnetic signals to the first battery pack and the second battery pack under the action of the default voltage U0;
the first battery pack comprises a first receiving end communication module, a first receiving coil and a first battery unit, the first receiving end communication module is in wireless connection with the sending end communication module and sends characteristic information of the first battery pack, and the first receiving coil receives the charging electromagnetic signal to charge the first battery unit;
the second battery pack comprises a second receiving end communication module, a second receiving coil and a second battery unit, the second receiving end communication module is in wireless connection with the sending end communication module and sends characteristic information of the second battery pack, and the second receiving coil receives the charging electromagnetic signal to charge the second battery unit;
wherein the rated voltage U2 of the second battery pack is different from the rated voltage U1 of the first battery pack, the ratio of the default voltage U0 of the transmitting coil to the number of turns N0 of the transmitting coil is equal to the ratio of the rated voltage U1 of the first battery pack to the number of turns N1 of the first receiving coil, and the ratio of the default voltage U0 of the transmitting coil to the number of turns N0 of the transmitting coil is equal to the ratio of the rated voltage U2 of the second battery pack to the number of turns N2 of the first receiving coil, i.e., U0/N0= U1/N1= U2/N2.
2. The wireless charging platform of claim 1, wherein the wireless connection between the transmitting end communication module and the first receiving end communication module or the second receiving end communication module is implemented by one of bluetooth communication, wireless radio frequency communication, or a voltage waveform loaded on a transmitting coil.
3. The wireless charging platform of claim 1, wherein the control module comprises a current adjustment unit for adjusting the magnitude of the current in the transmitting coil.
4. The wireless charging platform of claim 1, wherein the wireless charger further comprises a prompt module for prompting a user of an operating status of the wireless charger.
5. The wireless charging platform of claim 1, wherein the wireless charger further comprises a user input interface for receiving a user-input charging indication signal.
6. The wireless charging platform of claim 1, wherein the wireless charger further comprises a switch-off unit connected to the control module, the control module controlling the switch-off unit to power off the transmitting coil.
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| CN2019108743039 | 2019-09-17 | ||
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| CN106026237A (en) * | 2016-06-06 | 2016-10-12 | 薛寿贞 | Wireless charger and wireless charging system |
| CN108011449A (en) * | 2017-11-30 | 2018-05-08 | 上海与德科技有限公司 | A kind of method, system, equipment and the storage medium of wireless charging with oneself |
| CN109904884B (en) * | 2017-12-07 | 2023-10-17 | 中兴通讯股份有限公司 | Wireless charging method, device, terminal, storage medium and electronic device |
| US11005275B2 (en) * | 2018-01-26 | 2021-05-11 | Wbtec, Llc | Intelligent charging USB splitter |
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