CN111416449B - Wireless charging equipment - Google Patents
Wireless charging equipment Download PDFInfo
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- CN111416449B CN111416449B CN202010237681.9A CN202010237681A CN111416449B CN 111416449 B CN111416449 B CN 111416449B CN 202010237681 A CN202010237681 A CN 202010237681A CN 111416449 B CN111416449 B CN 111416449B
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- charging device
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- Computer Networks & Wireless Communication (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明实施例提供一种无线充设备，涉及通信技术领域，能够解决当充电器输出的跳周期特性波纹信号叠加在无线充电座接收到的通信信号上时，无线充电座和电子设备建立无线充电连接失败的问题。该无线充设备包括：无线充芯片、与无线充芯片连接的负载模块；无线充芯片，用于在该无线充设备与目标无线充设备建立无线充电连接的过程中，控制负载模块处于工作状态，并在该无线充设备与目标无线充设备建立无线充电连接之后，控制负载模块处于非工作状态；其中，在负载模块处于工作状态的情况下，与该无线充设备或目标无线充设备连接的充电器的实际功率，大于或等于充电器处于轻载模式下的额定功率。该无线充设备可以应用于无线充电的场景中。
Embodiments of the present invention provide a wireless charging device, which relates to the field of communication technology and can solve the problem that when a ripple signal with a cycle-hopping characteristic output by a charger is superimposed on a communication signal received by the wireless charging base, the wireless charging base and the electronic device establish wireless charging. Connection failure problem. The wireless charging device includes: a wireless charging chip and a load module connected to the wireless charging chip; the wireless charging chip is used to control the load module to be in a working state during the process of establishing a wireless charging connection between the wireless charging device and the target wireless charging device, And after the wireless charging device establishes a wireless charging connection with the target wireless charging device, the load module is controlled to be in a non-working state; wherein, when the load module is in a working state, the charging device connected to the wireless charging device or the target wireless charging device is charged. The actual power of the charger is greater than or equal to the rated power of the charger in light load mode. The wireless charging device can be applied in a wireless charging scenario.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to wireless charging equipment.
Background
With the development of wireless charging technology, the application of wireless charging function in electronic devices is becoming more and more extensive. Generally, the charger can be connected to the wireless charging base to provide power to the wireless charging base. The electronic equipment can be placed on the wireless charging seat to obtain electric energy.
In the process of establishing the wireless charging connection between the wireless charging stand and the electronic device, after the wireless charging stand transmits a ping signal (i.e., a detection signal) to the electronic device, the electronic device may transmit a communication signal to the wireless charging stand. After the wireless charging dock receives the communication signal, the wireless charging dock can demodulate the communication signal. After the wireless charging socket successfully demodulates the communication signal, the wireless charging socket can establish a wireless charging connection with the electronic device.
However, when the charger generates a skip-cycle characteristic ripple signal on the charging signal output by the wireless charging dock, the skip-cycle characteristic ripple signal may be superimposed on the communication signal received by the wireless charging dock during the process of establishing the wireless charging connection, so that the wireless charging dock cannot correctly demodulate the communication signal, and the wireless charging dock and the electronic device fail to establish the wireless charging connection.
Disclosure of Invention
The embodiment of the invention provides wireless charging equipment, which aims to solve the problem that when a hop period characteristic ripple signal output by a charger is superposed on a communication signal received by a wireless charging seat, the wireless charging seat and electronic equipment are failed to establish wireless charging connection.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present invention provides a wireless charging device, where the wireless charging device includes: the wireless chip that fills, with fill the load module that the chip is connected wirelessly. The wireless charging chip is used for controlling the load module to be in a working state in the process of establishing wireless charging connection between the wireless charging equipment and target wireless charging equipment, and controlling the load module to be in a non-working state after the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is established; under the condition that the load module is in the working state, the actual power of the charger connected with the wireless charging equipment or the target wireless charging equipment is larger than or equal to the rated power of the charger in the light load mode.
In the embodiment of the invention, the wireless charging device may include a wireless charging chip and a load module connected to the wireless charging chip. The wireless charging chip is used for controlling the load module to be in a working state in the process of establishing wireless charging connection between the wireless charging equipment and the target wireless charging equipment, and controlling the load module to be in a non-working state after the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is established; and under the condition that the load module is in a working state, the actual power of the charger connected with the wireless charging equipment or the target wireless charging equipment is greater than or equal to the rated power of the charger in a light load mode. By the scheme, as the wireless charging chip can be used in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the actual power of the charger is larger than or equal to the rated power of the charger in a light load mode by controlling the load module to be in a working state, therefore, in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the charger works in a non-underload (such as full load or overload) mode, namely, no ripple signal with cycle skipping characteristic is generated on the charging signal output by the charger, so that the ripple signal is not superposed on the communication signal received by the wireless charging equipment connected with the charger or the target wireless charging equipment, and then the wireless charging equipment or the target wireless charging equipment can correctly demodulate the communication signal, and the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is ensured to be successfully established.
Drawings
Fig. 1 is a schematic diagram of a wireless charging system according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a wireless charging setup according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wireless charging apparatus according to an embodiment of the present invention;
fig. 4 is a second schematic structural diagram of a wireless charging apparatus according to an embodiment of the present invention;
fig. 5 is a third schematic structural diagram of a wireless charging apparatus according to an embodiment of the present invention;
fig. 6 is a fourth schematic structural diagram of a wireless charging apparatus according to an embodiment of the present invention;
fig. 7 is a fifth schematic structural diagram of a wireless charging apparatus according to an embodiment of the present invention;
fig. 8 is a sixth schematic structural view of a wireless charging apparatus according to an embodiment of the present invention;
fig. 9 is a seventh schematic structural diagram of a wireless charging apparatus according to an embodiment of the present invention;
fig. 10 is a hardware schematic diagram of a wireless charging apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.
The terms "first" and "second," etc. herein are used to distinguish between different objects and are not used to describe a particular order of objects. For example, the first resistor and the second resistor, etc. are used to distinguish between different resistors, rather than to describe a particular order of resistors.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of elements means two or more elements, and the like.
The following describes respective reference numerals in the embodiments of the present invention.
20: a wireless charging device; 201: a wireless chip charger; 202: a load module; 21: a target wireless charging device; 22: a charger; 2021: a switching tube; 2022: a first resistor; 2023: a current source; 2024: a second resistor; 23: a wireless charging and transmitting device; 231: a wireless charging and transmitting chip; 232: a first switch tube; 233: a second switching tube; 234: a third switching tube; 235: a fourth switching tube; 236: a first resonant capacitor; 237: a transmitting coil; 238: a signal processing module; 24: a wireless charging receiving device; 241: a wireless charging receiving chip; 242: a second resonant capacitor; 243: and a receiving coil.
The embodiment of the invention provides wireless charging equipment which comprises a wireless charging chip and a load module connected with the wireless charging chip. The wireless charging chip is used for controlling the load module to be in a working state in the process of establishing wireless charging connection between the wireless charging equipment and the target wireless charging equipment, and controlling the load module to be in a non-working state after the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is established; and under the condition that the load module is in a working state, the actual power of the charger connected with the wireless charging equipment or the target wireless charging equipment is greater than or equal to the rated power of the charger in a light load mode. By the scheme, as the wireless charging chip can be used in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the actual power of the charger is larger than or equal to the rated power of the charger in a light load mode by controlling the load module to be in a working state, therefore, in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the charger works in a non-underload (such as full load or overload) mode, namely, no ripple signal with cycle skipping characteristic is generated on the charging signal output by the charger, so that the ripple signal is not superposed on the communication signal received by the wireless charging equipment connected with the charger or the target wireless charging equipment, and then the wireless charging equipment or the target wireless charging equipment can correctly demodulate the communication signal, and the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is ensured to be successfully established.
The process of establishing a wireless charging connection is first described with reference to fig. 1 and 2.
Fig. 1 is a schematic structural diagram of a possible wireless charging system according to an embodiment of the present invention. The wireless charging system can comprise a charging plug, a data line, a wireless charging seat connected with the data line, and electronic equipment placed on the wireless charging seat. In the embodiment of the present invention, the charging plug and the data line are collectively referred to as a charger.
In the embodiment of the present invention, a device that can provide power to other devices, similar to a wireless charging cradle, is referred to as a wireless charging and transmitting device, and a device that can receive power, similar to an electronic device, is referred to as a wireless charging and receiving device.
In an embodiment of the present invention, after the charger is connected to the power interface (e.g., a power socket), the charger may output a charging signal (which may be output in the form of a voltage signal). After the charger inputs the charging signal to the wireless charging stand, as shown in fig. 2, the wireless charging stand can transmit a detection signal (i.e., a ping signal) to the electronic device, and the electronic device can obtain power under the action of the ping signal. Then, a receiving module (e.g., a wireless charging receiving chip) in the electronic device can operate normally, and the electronic device can send a signal strength packet to the wireless charging cradle. After the wireless charging dock receives the signal strength packet, the wireless charging dock may demodulate the signal strength packet and send a demodulation success signal to the electronic device after successfully demodulating the signal strength packet. The electronic device can then send an authentication signal packet to the wireless cradle. After the wireless charging dock receives the verification signal packet, the wireless charging dock can demodulate the verification signal packet and send a demodulation success signal to the electronic device after successfully demodulating the verification signal packet. Next, the electronic device may transmit a configuration signal packet to the wireless cradle. After the wireless charging dock receives the configuration signal packet, the wireless charging dock may demodulate the configuration signal packet and send a demodulation success signal to the electronic device after successfully demodulating the configuration signal packet. Further, the electronic device may send a power control error packet (there may be one or more) to the wireless cradle. After the wireless charging dock receives the power control error packet, the wireless charging dock may demodulate the power control error packet and send a demodulation success signal to the electronic device after successfully demodulating the power control error packet. Then, a power transmission phase may be entered, and after entering the power transmission phase, it may be considered that the wireless charging cradle and the electronic device successfully establish the wireless charging connection. The signal strength packet, the verification signal packet, the configuration information packet, and the power control error packet may be understood as data packets.
In the embodiment of the present invention, the signal strength packet, the verification signal packet, the configuration information packet, and the power control error packet may be collectively referred to as a communication signal.
However, in the related art, many chargers usually operate in a skip cycle mode in a light load state, that is, a switching power supply in the charger is turned on for several sub-cycles in one cycle, and is turned off for the several sub-cycles in the one cycle. In this case, after the charger is connected to the power interface, a skip cycle characteristic ripple signal may be generated on the charging signal output by the charger. In the process of establishing wireless charging connection between the wireless charging seat and the electronic device, a skip cycle characteristic ripple signal output by a charger received by the wireless charging seat may be superimposed on a communication signal transmitted by the electronic device received by the wireless charging seat, so that the wireless charging seat cannot correctly demodulate the communication signal, and the wireless charging connection between the wireless charging seat and the electronic device fails.
In order to solve the above technical problem, an embodiment of the present invention provides a wireless charging device. The wireless charging device can comprise a wireless charging chip and a load module connected with the wireless charging chip. The wireless charging chip is used for controlling the load module to be in a working state in the process of establishing wireless charging connection between the wireless charging equipment and target wireless charging equipment, and controlling the load module to be in a non-working state after the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is established; under the condition that the load module is in the working state, the actual power of the charger connected with the wireless charging equipment or the target wireless charging equipment is larger than or equal to the rated power of the charger in the light load mode.
It should be noted that, in general, the charger is considered to be in the light load mode when the charger is operating at a percentage value that is less than or equal to the rated power of the charger (the power noted on the name plate of the charger). The percentage value may be 20%, 30%, 40%, etc. less than 50%. In the embodiment of the present invention, the rated power of the charger in the light load mode may be understood as: the charger may operate at maximum power in light load mode.
It can be understood that: in the above case, the rated power of the charger in the light load mode may be 20% of the rated power of the charger (the power marked on the name plate of the charger).
In the above process, since the wireless charging chip can be used in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the actual power of the charger is larger than or equal to the rated power of the charger in a light load mode by controlling the load module to be in a working state, therefore, in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the charger works in a non-underload (such as full load or overload) mode, namely, no ripple signal with cycle skipping characteristic is generated on the charging signal output by the charger, so that the ripple signal is not superposed on the communication signal received by the wireless charging equipment connected with the charger or the target wireless charging equipment, and then the wireless charging equipment or the target wireless charging equipment can correctly demodulate the communication signal, and the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is ensured to be successfully established.
The wireless charging device provided by the embodiment of the invention is exemplarily described below with reference to the drawings.
As shown in fig. 3, an embodiment of the present invention provides a wireless charging device 20, and the wireless charging device 20 may include a wireless charging chip 201 and a load module 202 connected to the wireless charging chip 201. The wireless charging chip 201 may be configured to control the load module 202 to be in an operating state during a process of establishing a wireless charging connection between the wireless charging device 20 and the target wireless charging device 21, and control the load module 202 to be in a non-operating state after the wireless charging connection between the wireless charging device 20 and the target wireless charging device 21 is established. When the load module 202 is in the working state, the actual power of the charger 22 connected to the wireless charging device 20 or the target wireless charging device 21 is greater than or equal to the rated power of the charger 22.
In the embodiment of the present invention, the wireless charging chip 201 may be electrically connected to the load module 202 when the wireless charging device is in an operating state.
Optionally, in this embodiment of the present invention, the wireless charging device 20 may be a wireless charging transmitting device, the target wireless charging device 21 may be a wireless charging receiving device, and the charger 22 is connected to the target wireless charging device 21; alternatively, the wireless charging device 20 may be a wireless charging receiving device, the target wireless charging device 21 may be a wireless charging transmitting device, and the charger 22 is connected to the wireless charging device 20. Namely, the embodiment of the invention can add a load module in the wireless charging and transmitting device and can also add a load module in the wireless charging and receiving device. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
Optionally, in the embodiment of the present invention, the wireless charging and transmitting device may be a wireless charging cradle, an electronic device supporting reverse charging, or any possible transmitting device capable of providing electric energy. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
Optionally, in this embodiment of the present invention, the wireless charging and receiving device may be any possible receiving device that can receive electric energy, such as an electronic device. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
In the wireless charging device provided by the embodiment of the invention, because the wireless charging chip can be used in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the actual power of the charger is larger than or equal to the rated power of the charger in a light load mode by controlling the load module to be in a working state, therefore, in the process of establishing the wireless charging connection between the wireless charging device and the target wireless charging device, the charger works in a non-underload (such as full load or overload) mode, namely, no ripple signal with cycle skipping characteristic is generated on the charging signal output by the charger, so that the ripple signal is not superposed on the communication signal received by the wireless charging equipment connected with the charger or the target wireless charging equipment, and then the wireless charging equipment or the target wireless charging equipment can correctly demodulate the communication signal, and the wireless charging connection between the wireless charging equipment and the target wireless charging equipment is ensured to be successfully established.
In the embodiment of the invention, because the charger may generate the cycle skipping characteristic ripple signal on the charging signal output by the charger in the light load state, in order to avoid that the cycle skipping characteristic ripple signal is not generated on the charging signal output by the charger any more, the charger may be controlled not to be in the light load state (for example, in the full load state), so that a load module may be added to the wireless charging transmitting device or the wireless charging receiving device, and the load module is in the working state in the process of establishing the wireless charging connection between the wireless charging transmitting device and the wireless charging receiving device, so that the load module may consume current (consume power) from the charging signal output by the charger, so that the charger is not in the light load state, and further, the cycle skipping characteristic ripple signal may be generated on the charging signal output by the charger.
The wireless charging device provided in the embodiment of the present invention is exemplarily described below by taking an example that a load module is added to the wireless charging and transmitting device, that is, the wireless charging device 20 is a wireless charging and transmitting device, and the target wireless charging device 21 is a wireless charging and receiving device.
In an embodiment of the present invention, when the wireless charging device is a wireless charging and transmitting device, and the target wireless charging device is a wireless charging and receiving device, the wireless charging device 20 shown in fig. 3 may specifically be a wireless charging and transmitting device 23 shown in fig. 4, the target wireless charging device 21 may specifically be a wireless charging and receiving device 24 shown in fig. 4, and the wireless charging chip 201 may specifically be a wireless charging and transmitting chip 231 shown in fig. 4. The wireless charging and transmitting chip 231 may be configured to control the load module 202 to be in an operating state in a process of establishing a wireless charging connection between the wireless charging and transmitting device 23 and the wireless charging and receiving device 24, and control the load module 202 to be in a non-operating state after establishing the wireless charging connection between the wireless charging and transmitting device 23 and the wireless charging and receiving device 24.
Optionally, in this embodiment of the present invention, the wireless charging and transmitting chip 231 may be specifically configured to control the load module to be in a working state after sending the detection signal to the wireless charging and transmitting device.
Optionally, in this embodiment of the present invention, the wireless charging/transmitting chip 231 may be configured to demodulate a communication signal sent by a wireless charging/receiving device.
Optionally, in the embodiment of the present invention, the detection signal may be a ping signal or any other possible form of detection signal, which may be determined specifically according to actual use requirements, and the embodiment of the present invention is not limited.
Optionally, in the embodiment of the present invention, a 32-bit Optical disk (MO) processing module, a full-bridge rectifier, a frequency signal demodulation module, an Analog-to-Digital Converter (ADC) module, and other modules may be integrated inside the wireless transmitting and receiving chip 231. In addition, the wireless charging/receiving chip may have a Serial BUS Interface (INTER IC BUS, I2C), a Serial Peripheral Interface (SPI), a General-purpose input/output (GPIO) port, and the like.
Optionally, in an embodiment of the present invention, the load module may be specifically connected to a full-bridge rectifier module in the wireless charging and transmitting chip.
In the embodiment of the invention, the wireless charging and transmitting chip can immediately control the load module to be in the working state after the wireless charging and transmitting device sends the detection signal, so that the generation of a skip cycle characteristic ripple signal can be avoided, the ripple signal cannot be superposed on the communication signal received by the wireless charging and transmitting device, the wireless charging and receiving device or the wireless charging and transmitting device can correctly demodulate the communication signal, and the wireless charging device and the target wireless charging device can be ensured to successfully establish the wireless charging connection.
Optionally, in an embodiment of the present invention, in a possible implementation manner, with reference to fig. 4, as shown in fig. 5, the load module 202 may include a switch tube 2021, and a first resistor (may also be referred to as a first power resistor) 2022 connected to a first end of the switch tube 2021. The second end of the switch tube 2021 is connected to the wireless charging/transmitting chip 231, and the third end of the switch tube 2021 is grounded.
In an embodiment of the present invention, the first end of the switching tube may be a drain of the switching tube, the second end of the switching tube may be a gate of the switching tube, and the third end of the switching tube may be a source of the switching tube.
Optionally, in the embodiment of the present invention, the switch tube may be any possible switch tube, such as a field effect transistor (MOS) tube or a transistor. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
Optionally, in an embodiment of the present invention, in one possible implementation manner, the wireless charging and transmitting chip 231 may be specifically configured to control the load module to be in a working state by controlling the switch tube to be turned on in a process of establishing a wireless charging connection between the wireless charging and transmitting device and the wireless charging and receiving device.
Optionally, in an embodiment of the present invention, in one possible implementation manner, the wireless charging and transmitting chip 231 may be specifically configured to control the load module to be in a non-operating state by controlling the switch tube to be turned off after the wireless charging connection is established between the wireless charging and transmitting device and the wireless charging and receiving device.
Optionally, in an embodiment of the present invention, the resistance of the first resistor may be determined according to a ratio between a rated output voltage of the charger and the first preset current.
Optionally, in an embodiment of the present invention, the value of the first preset current may be an empirical value obtained through multiple calculations, analyses, comparisons, and the like. Wherein the first preset current may have a value greater than or equal to 150 milliamperes (mA).
In another possible implementation manner, as shown in fig. 6 in combination with fig. 4, the load module 202 may include a current source 2023, and a second resistor (also referred to as a second power resistor) 2024 connected to a first end of the current source 2023. The second terminal of the current source 2023 is connected to the wireless charging/transmitting chip 231.
In an embodiment of the present invention, the first terminal of the current source may be a terminal from which a current flows out in the current source, and the second terminal of the current source may be a terminal from which a current flows in the current source.
Optionally, in an embodiment of the present invention, in another possible implementation manner, the wireless charging and transmitting chip 231 may be specifically configured to control the load module to be in a working state by controlling the conduction of the current source in a process of establishing a wireless charging connection between the wireless charging and transmitting device and the wireless charging and receiving device.
Optionally, in an embodiment of the present invention, in another possible implementation manner described above, the wireless charging and transmitting chip 231 may be specifically configured to control the load module to be in a non-operating state by controlling the current source to turn off after the wireless charging and transmitting device establishes a wireless charging connection with the wireless charging and receiving device.
Optionally, in an embodiment of the present invention, a resistance of the second resistor may be determined according to a ratio of a rated output voltage of the charger to a second preset current.
Optionally, in an embodiment of the present invention, the value of the second preset current may be an empirical value obtained through multiple calculations, analyses, comparisons, and the like. The second preset current may also have a value greater than or equal to 150 milliamperes (mA).
Optionally, in this embodiment of the present invention, in combination with fig. 4 described above, as shown in fig. 7, the wireless charging and transmitting device 23 may further include a first switch tube 232, a second switch tube 233 connected to the first switch tube 232, a third switch tube 234 connected to the second switch tube 233, a fourth switch tube 235 connected to the third switch tube 234, a first resonance capacitor 236 connected to the fourth switch tube 235, a transmitting coil 237 connected to the first resonance capacitor 236, and a signal processing module 238 connected to the transmitting coil 237.
Optionally, in the embodiment of the present invention, the first switching tube 232, the second switching tube 233, the third switching tube 234, and the fourth switching tube 235 form a full-bridge inverter. The full-bridge inverter can be used for converting a direct current voltage output by the charger into an alternating current voltage under the action of a Pulse Width Modulation (PWM) driving signal output by the wireless charging and transmitting chip, and outputting the alternating current voltage to the resonant capacitor.
Optionally, in this embodiment of the present invention, the first resonant capacitor may be adapted to a resonant point, so that the electric energy transmitted by the wireless charging and transmitting device meets an electric energy requirement of the wireless charging and receiving device.
Optionally, in an embodiment of the present invention, the transmitting coil may be configured to generate an alternating magnetic field under the action of an alternating voltage, so as to provide the wireless charging and receiving device with the required converted electric energy.
Optionally, in this embodiment of the present invention, the signal processing module may be configured to perform message interaction of a wireless charging protocol with a wireless charging receiving device.
Optionally, in this embodiment of the present invention, the signal processing module may be any possible signal processing module, such as a bluetooth module or a Wireless Fidelity (WIFI) module. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
The wireless charging device provided in the embodiment of the present invention is further exemplarily described below by taking an example that a load module is added to the wireless charging receiving device, that is, the wireless charging device 20 is a wireless charging receiving device, and the target wireless charging device 21 may be a wireless charging transmitting device.
In an embodiment of the present invention, when the wireless charging device is a wireless charging and receiving device, and the target wireless charging device is a wireless charging and transmitting device, the wireless charging device 20 shown in fig. 3 may specifically be a wireless charging and receiving device 24 shown in fig. 8, the target wireless charging device 21 may specifically be a wireless charging and transmitting device 23 shown in fig. 8, and the wireless charging chip 201 may specifically be a wireless charging and receiving chip 241 shown in fig. 8. The wireless charging receiving chip 241 may be configured to control the load module 202 to be in an operating state in a process of establishing a wireless charging connection between the wireless charging receiving device 24 and the wireless charging transmitting device 23, and control the load module 202 to be in a non-operating state after establishing the wireless charging connection between the wireless charging receiving device 24 and the wireless charging transmitting device 23.
Optionally, in this embodiment of the present invention, the wireless charging receiving chip 241 may be specifically configured to control the load module to be in a working state after sending the communication signal to the wireless charging receiving device.
Optionally, in this embodiment of the present invention, the wireless charging receiving chip 241 may be configured to demodulate a frequency signal (for example, the demodulation success signal) sent by the wireless charging transmitting device.
Optionally, in this embodiment of the present invention, the communication signal may include a signal strength packet, a verification information number, a configuration signal packet, a power control error packet, and the like. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
Optionally, in the embodiment of the present invention, a 32-bit MO processing module, a full-bridge rectifier module, a power conversion module, a frequency signal demodulation module, an ADC detection module, other modules, and the like may be integrated inside the wireless charging and receiving chip 241. In addition, the wireless charging and receiving chip can be provided with I2C, SPI, GPIO port and the like.
Optionally, in an embodiment of the present invention, the load module may be specifically connected to a full-bridge ballast module in the wireless charging reception chip.
In the embodiment of the invention, the wireless charging receiving chip can immediately control the load module to be in the working state after the wireless charging receiving equipment sends the communication signal, so that the generation of a skip cycle characteristic ripple signal can be avoided, the ripple signal cannot be superposed on the communication signal received by the wireless charging transmitting equipment, the wireless charging receiving equipment or the wireless charging transmitting equipment can correctly demodulate the communication signal, and the wireless charging equipment and the target wireless charging equipment can be ensured to successfully establish the wireless charging connection.
Optionally, in an embodiment of the present invention, in one possible implementation manner described above, that is, under the condition that the load module includes the switch tube and the first resistor, the wireless charging receiving chip may be specifically configured to control the load module to be in the working state by controlling the switch tube to be turned on in the process of establishing the wireless charging connection between the wireless charging receiving device and the wireless charging transmitting device.
Optionally, in an embodiment of the present invention, in the possible implementation manner, the wireless charging receiving chip 241 may be specifically configured to control the load module to be in a non-operating state by controlling the switching tube to be turned off after the wireless charging receiving device establishes a wireless charging connection with the wireless charging transmitting device.
In another possible implementation manner, that is, in a case that the load module includes a current source and a second resistor, the wireless charging receiving chip 241 may be specifically configured to control the load module to be in a working state by controlling the current source to be turned on in a process that the wireless charging receiving device and the wireless charging transmitting device establish a wireless charging connection.
Optionally, in this embodiment of the present invention, the wireless charging receiving chip 241 may be specifically configured to control the load module to be in a non-operating state by controlling the current source to be turned off after the wireless charging receiving device establishes a wireless charging connection with the wireless charging transmitting device.
It should be noted that, for other descriptions in the embodiment of the present invention, reference may be made to the above-mentioned related description in the case that the wireless charging device is a wireless charging and transmitting device, and the target wireless charging device is a wireless charging and receiving device. To avoid repetition, further description is omitted here.
Optionally, in the embodiment of the present invention, in combination with fig. 8 described above, as shown in fig. 9, the wireless charging and receiving device 24 may further include a second resonant capacitor 242, and a receiving coil 243 connected to the resonant capacitor 242.
Optionally, in this embodiment of the present invention, the second resonant capacitor may be adapted to a resonant point, so that the wireless charging and receiving device obtains the required electric energy.
Optionally, in this embodiment of the present invention, the receiving coil may be configured to receive an alternating magnetic field sent by the wireless charging and transmitting device, and convert the magnetic field into electric energy.
It should be noted that, in the embodiment of the present invention, the wireless charging device further includes some functional modules that are not shown, and details are not described here.
The following takes the wireless charging device as an electronic device, and an exemplary description is given to hardware of the wireless charging device.
Fig. 10 is a schematic hardware diagram of an electronic device according to an embodiment of the present invention. The electronic device 100 includes, but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 10 does not constitute a limitation of the electronic device, and that the electronic device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The power source 111 may include a wireless charging module, which may include a wireless charging chip and a load module.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals during a message transmission or call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.
The electronic device provides wireless broadband internet access to the user via the network module 102, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the electronic apparatus 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.
The input unit 104 is used to receive an audio or video signal. The input unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode.
The electronic device 100 also includes at least one sensor 105, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or the backlight when the electronic device 100 is moved to the ear. As one type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of an electronic device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic device. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 1071 (e.g., operations by a user on or near touch panel 1071 using a finger, stylus, or any suitable object or attachment). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 10, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the electronic device, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the electronic device, and is not limited herein.
The interface unit 108 is an interface for connecting an external device to the electronic apparatus 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the electronic apparatus 100 or may be used to transmit data between the electronic apparatus 100 and the external device.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 110 is a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, performs various functions of the electronic device and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the electronic device. Processor 110 may include one or more processing units; alternatively, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The electronic device 100 may further include a power supply 111 (e.g., a battery) for supplying power to each component, and optionally, the power supply 111 may be logically connected to the processor 110 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.
In addition, the electronic device 100 includes some functional modules that are not shown, and are not described in detail herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling an electronic device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
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| CN202010237681.9A CN111416449B (en) | 2020-03-30 | 2020-03-30 | Wireless charging equipment |
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| US6331763B1 (en) * | 1998-04-15 | 2001-12-18 | Tyco Electronics Corporation | Devices and methods for protection of rechargeable elements |
| CN201750190U (en) * | 2010-08-24 | 2011-02-16 | 扬州飞驰动力科技有限公司 | Power supplying, surge preventing and pre-unloading device of power battery pack |
| WO2012145897A1 (en) * | 2011-04-27 | 2012-11-01 | 海能达通信股份有限公司 | Battery protection device and method |
| CN110830087B (en) * | 2018-08-29 | 2020-10-23 | 华为技术有限公司 | Wireless battery charging system and method of using the same |
| CN109412236A (en) * | 2018-12-05 | 2019-03-01 | 山西交通职业技术学院 | S-S type constant current wireless charging power supply based on secondary-side switch control |
| CN109638920B (en) * | 2018-12-28 | 2024-07-12 | 上海飞龙新能源汽车部件有限公司 | High-voltage pre-charging module circuit for load energy storage capacitor |
| CN109768600A (en) * | 2019-01-29 | 2019-05-17 | 中国电力科学研究院有限公司 | A wireless charging method and device for electric field locks |
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