CN209805437U - Charging system and electronic device - Google Patents
Charging system and electronic device Download PDFInfo
- Publication number
- CN209805437U CN209805437U CN201920232052.XU CN201920232052U CN209805437U CN 209805437 U CN209805437 U CN 209805437U CN 201920232052 U CN201920232052 U CN 201920232052U CN 209805437 U CN209805437 U CN 209805437U
- Authority
- CN
- China
- Prior art keywords
- electronic device
- coil
- module
- charging
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
the embodiment of the utility model discloses charging system and electronic equipment. The charging system includes a first electronic device and a second electronic device. The first electronic device includes a transmitting coil and the second electronic device includes a receiving coil. When a receiving coil of a second electronic device is proximate to a transmitting coil of a first electronic device, the first electronic device transmits power to the second electronic device. When the charging power of the first electronic device for transmitting the electric energy to the second electronic device is smaller than a preset power threshold, the second electronic device sends a charging power increasing signal to the first electronic device. After receiving the charging power boost signal, the first electronic device changes the number of turns of the transmitting coil, or the charging voltage is boosted, so that the charging power when the first electronic device transmits electric energy to the second electronic device is boosted. Adopt the embodiment of the utility model provides a, can promote the wireless charging efficiency who reversely charges for the user experience of reverse charging technique is good, and the suitability is strong.
Description
Technical Field
the utility model relates to the field of electronic technology, especially, relate to a charging system and electronic equipment.
background
With the continuous development of mobile internet technology, User Equipment (UE) such as a mobile phone, a tablet computer or a notebook computer has become one of indispensable items in people's work and life. The wireless charging technology different from the traditional wired charging technology is brought forward due to the continuous improvement of user experience of user equipment by people. Due to the wireless charging technology, the limitation of a data line is not considered in the charging process of the user equipment, and the user can use the wireless charging equipment conveniently. Therefore, wireless charging technology is also one of the current research hotspots.
The current wireless charging technology mainly includes a forward charging mode and a reverse charging mode. For example, when the user equipment a wirelessly charges the user equipment B, the user equipment a outputs a wireless charging current to the user equipment B, and the user equipment a is in the reverse charging mode and the user equipment B is in the forward charging mode. In the prior art, the charging power provided by the user equipment in the reverse charging mode is low, and is generally kept at about 2.5W, which obviously cannot meet the charging requirement of the user equipment in the forward charging mode. This results in low charging efficiency and poor user experience with current wireless reverse charging techniques.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a charging system and electronic equipment. Adopt the embodiment of the utility model provides a, can promote the wireless charging efficiency who reversely charges for wireless reverse user experience who charges is good, and the suitability is strong.
in a first aspect, an embodiment of the present invention provides a charging system. The charging system includes a first electronic device and a second electronic device. The first electronic device includes a transmitting coil and the second electronic device includes a receiving coil. When the receiving coil of the second electronic device is close to the transmitting coil of the first electronic device, the first electronic device is configured to transmit power to the second electronic device. The second electronic device is configured to send a charging power boost signal to the first electronic device when the charging power of the first electronic device when transmitting power to the second electronic device is less than a preset power threshold. The first electronic device is configured to change the number of turns of the transmitting coil after receiving the charging power boost signal, or boost the charging voltage of the first electronic device, so as to boost the charging power when the first electronic device transmits the electric energy to the second electronic device.
The embodiment of the utility model provides an in, at the in-process that first electronic equipment charges to the wireless reverse of second electronic equipment, first electronic equipment can be real-timely promotes its charging power when transmitting the electric energy to second electronic equipment according to the power that second electronic equipment sent and promotes the signal, just so make second electronic equipment can obtain enough big charging power from first electronic equipment department, thereby can promote whole charging system's charge efficiency, make wireless reverse charging technique suitability stronger, user experience is better.
in a possible implementation, the first electronic device further includes a first battery and a first wireless charging module. The first wireless charging module is configured to convert a dc voltage provided by the first battery into an ac voltage, and the transmitting coil is configured to convert the ac voltage into electric energy and transmit the electric energy obtained by conversion to the second electronic device.
in a possible embodiment, at least a first coil tap and a second coil tap are provided on the transmission coil. The number of turns of the coil corresponding to the first coil tap is less than the number of turns of the coil corresponding to the second coil tap. The first wireless charging module comprises a coil tap switching module, a first wireless charging conversion module and a first control module. The first control module is configured to transmit a coil turn reduction signal to the coil tap switching module when the first wireless charging conversion module detects the charging power boost signal. The coil tap switching module is configured to switch a coil tap connected between the transmitting coil and the first wireless charging conversion module from the first coil tap to the second coil tap when detecting the coil turn reduction signal, so as to increase a charging power of the second power supply. The charging power of the first electronic equipment is improved when the first electronic equipment transmits electric energy to the second electronic equipment by reducing the number of turns of the coil, and the method is simple and easy to realize.
In a possible implementation manner, the first electronic device further includes a voltage boosting module, and one end of the first battery is connected to one end of the first wireless charging conversion module through the voltage boosting module. The first control module is configured to send a voltage boost signal to the boost module when the first wireless charging conversion module detects the charging power boost signal. The voltage boosting module is used for keeping the charging current unchanged and boosting the charging voltage of the first electronic device after detecting the voltage boosting signal so as to boost the charging power when the first electronic device transmits electric energy to the second electronic device.
In a possible implementation manner, the boost module includes a driving circuit and a voltage boosting circuit, and the voltage boosting circuit may include a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first capacitor, and a second capacitor. Here, one end of the first switching tube is connected to one end of the first wireless charging conversion module as an output end of the boosting module. One end of the first switch tube, one end of the second switch tube, one end of the third switch tube and one end of the fourth switch tube are respectively connected with one end of the driving circuit. The other end of the driving circuit is connected with one end of the first control module. The other end of the first switch tube is respectively connected with the other end of the second switch tube and one end of the first capacitor. The other end of the second switching tube is connected to the other end of the third switching tube and one end of the second capacitor, and is connected to the first battery as an input end of the boost module. And the other end of the third switching tube is connected with the other end of the fourth switching tube and the other end of the first capacitor respectively. And the other end of the fourth switch tube and the other end of the second capacitor are grounded together. The booster circuit is simple in structure, easy to realize and capable of reducing electric energy loss.
In a possible implementation manner, the second electronic device is further configured to transmit a power keeping signal to the first charging device when it is detected that the charging power when the first electronic device transmits the power to the second electronic device is equal to a preset power threshold. The first charging device is further configured to trigger to maintain the charging power of the first electronic device when the first charging device transmits the electric energy to the second electronic device unchanged when the power holding signal is detected.
in a possible implementation manner, the second electronic device includes a receiving coil, a second wireless charging module, and a second battery. The receiving coil is used for receiving the electric energy transmitted by the transmitting coil and converting the electric energy into induced alternating voltage. The second wireless charging module is used for converting the induction alternating current voltage into induction direct current voltage and inputting the induction direct current voltage into the second battery.
In a second aspect, an embodiment of the present invention provides another charging system. The charging system comprises a first electronic device and a second electronic device, wherein the first electronic device comprises a transmitting coil, and the second electronic device comprises a receiving coil. When the receiving coil of the second electronic device is close to the transmitting coil of the first electronic device, the first electronic device is configured to transmit power to the second electronic device. The first electronic device is configured to change the number of turns of the transmitting coil or boost a charging voltage of the first electronic device when a preset power boosting cycle is reached, so as to boost the charging power when the first electronic device transmits electric energy to the second electronic device. The second electronic device is configured to transmit a charging power maintaining signal to the first electronic device when a charging power when the first electronic device transmits power to the second electronic device is equal to a preset power threshold. The first electronic device is further configured to trigger to maintain the charging power level of the first electronic device when the first electronic device transmits the electric energy to the second electronic device when the charging power maintaining signal is received.
The embodiment of the utility model provides an in, at the in-process that first electronic equipment charges to the wireless reverse of second electronic equipment, first electronic equipment can promote its charging power when transmitting the electric energy to second electronic equipment periodically, just so makes second electronic equipment can be faster obtain enough big charging power from first electronic equipment department to can promote whole charging system's charge efficiency, make wireless reverse charging technique suitability stronger, user experience is better.
in one possible implementation, the first electronic device includes a transmitting coil, a first wireless charging module, and a first battery. The first wireless charging module is used for converting the direct current voltage provided by the first battery into alternating current voltage and transmitting the alternating current voltage to the transmitting coil. The transmitting coil is used for converting the alternating voltage into electric energy and transmitting the converted electric energy to the second electronic equipment.
In a possible embodiment, at least a first coil tap and a second coil tap are provided on the transmission coil. The number of turns of the coil corresponding to the first coil tap is less than the number of turns of the coil corresponding to the second coil tap. The first wireless charging module comprises a coil tap switching module, a first wireless charging conversion module and a first control module. The first control module is configured to transmit a coil turn reduction signal to the coil tap switching module when the power boost period is detected to be reached. The coil tap switching module is configured to switch a coil tap connected between the transmitting coil and the first wireless charging conversion module from the first coil tap to the second coil tap when detecting the coil turn reduction signal, so as to increase a charging power of the second power supply.
in a possible implementation manner, the first electronic device further includes a voltage boosting module, and one end of the first battery is connected to one end of the first wireless charging conversion module through the voltage boosting module. The first control module is configured to send a voltage boost signal to the boost module when it is detected that the power boost period has reached. The voltage boosting module is used for keeping the charging current unchanged and boosting the charging voltage of the first electronic device after detecting the voltage boosting signal so as to boost the charging power when the first electronic device transmits electric energy to the second electronic device.
In a possible implementation manner, the boost module includes a driving circuit and a voltage boosting circuit, and the voltage boosting circuit may include a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first capacitor, and a second capacitor. Here, one end of the first switching tube is connected to one end of the first wireless charging conversion module as an output end of the boosting module. One end of the first switch tube, one end of the second switch tube, one end of the third switch tube and one end of the fourth switch tube are respectively connected with one end of the driving circuit. The other end of the driving circuit is connected with one end of the first control module. The other end of the first switch tube is respectively connected with the other end of the second switch tube and one end of the first capacitor. The other end of the second switching tube is connected to the other end of the third switching tube and one end of the second capacitor, and is connected to the first battery as an input end of the boost module. The other end of the third switching tube is connected to the other end of the fourth switching tube and the other end of the first capacitor, respectively, and the other end of the fourth switching tube and the other end of the second capacitor are grounded together.
in a possible implementation manner, the second electronic device further includes a receiving coil, a second wireless charging module, and a second battery. The receiving coil is used for receiving the electric energy transmitted by the transmitting coil and converting the electric energy transmitted by the transmitting coil into an induced alternating voltage. The second wireless charging module is used for converting the induction alternating current voltage into induction direct current voltage and inputting the induction direct current voltage into the second battery.
In a third aspect, an embodiment of the present invention provides an electronic device. The electronic equipment comprises a battery and a transmitting coil;
The electronic device is configured to transmit power to the receiving device when a receiving coil of the receiving device is proximate to a transmitting coil of the electronic device. The electronic device is further configured to change the number of turns of the transmitting coil or increase a charging voltage of the electronic device after detecting the charging power increase signal sent by the receiving device, so as to increase the charging power when the electric energy is transmitted to the receiving device. The power boost signal is sent when the receiving device detects that the charging power is smaller than a preset power threshold.
In a possible implementation, the electronic device further includes a first wireless charging module. The first wireless charging module is used for converting direct-current voltage provided by the battery into alternating-current voltage, and the transmitting coil is used for converting the alternating-current voltage into electric energy and transmitting the converted electric energy to the receiving equipment.
In a possible implementation manner, at least a first coil tap and a second coil tap are disposed on the transmitting coil, the number of turns of the coil corresponding to the first coil tap is less than the number of turns of the coil corresponding to the second coil tap, and the first wireless charging module includes a coil tap switching module, a first wireless charging conversion module, and a first control module. The first control module is configured to transmit a coil turn reduction signal to the coil tap switching module when the first wireless charging conversion module detects the charging power boost signal. The coil tap switching module is configured to switch a coil tap connected between the transmitting coil and the first wireless charging conversion module from the first coil tap to the second coil tap when detecting the signal indicating that the number of turns of the coil is decreased, so as to increase charging power when transmitting electric energy to the receiving device.
in a possible implementation manner, the electronic device further includes a voltage boosting module, and one end of the battery is connected to one end of the first wireless charging conversion module through the voltage boosting module. The first control module is configured to send a voltage boost signal to the boost module when the first wireless charging conversion module detects the charging power boost signal. The voltage boosting module is used for keeping the charging current unchanged and boosting the charging voltage of the electronic equipment after detecting the voltage boosting signal so as to boost the charging power when transmitting the electric energy to the receiving equipment.
In a possible implementation manner, the boost module includes a driving circuit and a voltage boosting circuit, and the voltage boosting circuit may include a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first capacitor, and a second capacitor. Here, one end of the first switching tube is connected to one end of the first wireless charging conversion module as an output end of the boosting module. One end of the first switch tube, one end of the second switch tube, one end of the third switch tube and one end of the fourth switch tube are respectively connected with one end of the driving circuit. The other end of the driving circuit is connected with one end of the first control module. The other end of the first switch tube is respectively connected with the other end of the second switch tube and one end of the first capacitor. The other end of the second switching tube is connected to the other end of the third switching tube and one end of the second capacitor, and is connected to the battery as the input end of the boost module. And the other end of the third switching tube is connected with the other end of the fourth switching tube and the other end of the first capacitor respectively. And the other end of the fourth switch tube and the other end of the second capacitor are grounded together.
In a possible implementation, the electronic device is further configured to trigger, when the power hold signal is detected, maintaining the charging power level of the electronic device when the electronic device transmits the power to the receiving device. Here, the power maintaining signal is transmitted when the receiving device detects that the charging power is equal to a preset power threshold.
In a fourth aspect, an embodiment of the present invention provides an electronic device, which may be the second electronic device provided in the first aspect or the second aspect, and may also be the receiving device provided in the third aspect. The electronic device may include the functional module included in the second electronic device provided in the first aspect or the second aspect, and may also implement the function that is implemented by the functional module included in the second electronic device provided in the first aspect or the second aspect. The electronic device may include the functional module included in the receiving device provided in the third aspect, and may also implement the function included in the functional module included in the receiving device provided in the third aspect.
The utility model discloses on the basis of the implementation that above-mentioned each side provided, can also carry out further combination in order to provide more implementation.
Drawings
Fig. 1 is a schematic structural diagram of a charging system according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a charging system according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of a charging system according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a first charging apparatus according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a first charging apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a boosting module provided in an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
referring to fig. 1, fig. 1 is a schematic structural diagram of a wireless charging system according to an embodiment of the present invention. The wireless charging system may include a first electronic device 10 and a second electronic device 20. Here, the first electronic device 10 is mainly used to transmit power to the second electronic device 20. The second electronic device 20 may charge a second battery it contains based on the power it receives. That is, in the wireless charging scenario shown in fig. 1, the first electronic device 10 operates in the wireless reverse charging mode, and the second electronic device 20 operates in the wireless forward charging mode. It is understood that, depending on the specific scenario, the first electronic device 10 may also operate in a wireless forward charging mode, and the second electronic device 20 may also operate in a wireless reverse charging mode. In the present embodiment, the first electronic device 10 is described as operating in the wireless reverse charging mode, and the second electronic device 20 is described as operating in the wireless forward charging mode. Optionally, the first electronic device 10 and the second electronic device 20 may be electronic devices such as smart phones, tablet computers, vehicle-mounted devices, or smart wearable devices that support a wireless charging function and a wireless discharging function.
in practical applications, please refer to fig. 2, and fig. 2 is a schematic structural diagram of a charging system according to an embodiment of the present invention. As can be seen from fig. 2, the first electronic device 10 may include a transmitting coil 101, a first wireless charging module 102, and a first battery 103. Here, one end of the first battery 103 is connected to one end of the first wireless charging module 102, and the other end of the first wireless charging module 102 is connected to one end of the transmitting coil 101. The second electronic device 20 may include a receiving coil 201, a second wireless charging module 202, and a second battery 203. One end of the receiving coil 201 is connected to one end of the second wireless charging module 202, and the other end of the second wireless charging module 202 is connected to one end of the second battery 203. For example, the first battery 103 and the second battery 203 may be batteries or battery packs for storing electric energy, and are not limited herein. Before starting to transmit power to the second electronic device 20, the first electronic device 10 may periodically transmit a detection signal for detecting whether there is a device to be charged around the first electronic device 10. After the second electronic device 20 that needs to be charged approaches the first electronic device 10 (i.e., the transmitting coil 101 and the receiving coil 201 approach each other) and receives the detection signal, it may transmit a response signal corresponding to the detection signal. After receiving the response signal corresponding to the detection signal, the first electronic device 10 may determine that the second electronic device 20 needs to be charged, and then may implement a radio connection with the second electronic device 20 through electromagnetic coupling. After the first electronic device 10 and the second electronic device 20 are electrically connected by electromagnetic coupling, the first wireless charging module 102 performs conversion processing such as power control, inversion, voltage stabilization, and filtering on the direct current provided by the first battery 103 to obtain alternating current with fixed power. The transmitting coil 101 may convert the alternating current into electromagnetic energy and deliver it to the receiving coil 201. The receiving coil 201 may convert the received electromagnetic energy into electric energy (i.e., into an induced alternating current), and transmit the induced alternating current to the second wireless charging module 202. The second wireless charging module 202 can perform power control, rectification, voltage stabilization, filtering, and other conversion processing on the induced alternating current to obtain an induced direct current with fixed power, and charge the second battery 203 through the induced direct current to realize transmission of electric energy from the first electronic device to the second electronic device. Here, it should be noted that the transmitting coil 101 may specifically transmit the electric energy to the receiving coil 201 by means of electromagnetic induction, magnetic resonance transmission, and the like, and is not limited herein. For example, when the first wireless charging module 102 inputs a constant power ac power to the transmitting coil 101, the transmitting coil generates a constantly changing magnetic field, and the receiving coil 201 in the changing magnetic field generates an induced ac power, thereby achieving the transmission of the electric energy. The embodiment of the present invention provides an electromagnetic induction type power transmission mode as an example.
further, please refer to fig. 3, fig. 3 is a schematic structural diagram of a charging system according to an embodiment of the present invention. As shown in fig. 3, the first wireless charging module 102 may specifically include a first control module 121 and a first wireless charging conversion module 122. The second wireless charging module 202 may specifically include a second control module 221 and a second wireless charging conversion module 222. Here, the first control module 121 and the second control module 221 may be a system-on-chip (SOC) having a data processing capability. The first wireless charging conversion module 122 and the second wireless charging conversion module 222 may be specifically a wireless charging integrated chip having functions of inversion, rectification, filtering, and the like, and are not limited herein.
In a possible implementation manner, during the process of wirelessly charging the second electronic device 20 by the first electronic device 10, the second control module 221 may detect the charging power when the first electronic device 10 transmits the power to the second electronic device 20 in real time. Specifically, the second control module 221 may detect a charging current and a charging voltage at which the second wireless charging conversion module 222 charges the second battery 203, and then calculate an input electric power of the second battery 203 from the charging current and the charging voltage. Then, when the second control module 221 determines that the charging power during power transmission is less than the preset charging power threshold, a power boost signal may be sent to the first electronic device 10 through the receiving coil 201. The power boost signal is used to instruct the first electronic device 10 to trigger boosting of the charging power when transmitting power. Specifically, when the second control module 221 determines that the charging power during the electric energy transmission is smaller than the preset charging power threshold, a first instruction may be sent to the second wireless charging conversion module 222, where the first instruction is used to instruct the second wireless charging conversion module 222 to generate the alternating current with the specific frequency. The second wireless charging conversion module 222 may input the alternating current to the receiving coil 201 after generating the alternating current. The receiving coil 201 can generate a radio signal T corresponding to the power-up signal and send the radio signal T to the first electronic device 10. After receiving the radio signal T, the transmitting coil 101 in the first electronic device 10 may convert it into a corresponding ac signal and transmit it to the first wireless charging conversion module 121. The first wireless charging conversion module 122 can convert the ac signal into the power boost signal and transmit the power boost signal to the first control module 121. After detecting the power boost signal, the first control module 121 may trigger boosting of the charging power during transmission of the electric energy. Here, the first electronic device increases the charging power when the first electronic device transmits electric energy to the second electronic device in a stepped manner according to the power increasing signal sent by the second electronic device, so that the output power provided by the first electronic device can gradually meet the charging requirement of the second electronic device, the stable execution of wireless reverse charging is ensured, and the stability of the whole charging system can be increased.
alternatively, the preset charging power threshold may be an empirical value set based on the circuit structure and the operating environment of the second electronic device. Preferably, the preset charging power threshold may be a maximum input electric power allowable by the second battery.
Optionally, please refer to fig. 4, and fig. 4 is a schematic structural diagram of a first electronic device according to an embodiment of the present invention. As can be seen from fig. 4, at least a first coil tap (e.g., tap 1) and a second coil tap (e.g., tap 2) are provided on the transmitting coil 101. The number of turns of the coil corresponding to the first coil tap is less than that of the coil corresponding to the second coil tap. It is understood that the number of coil taps disposed on the transmit coil 101 may be determined according to a specific implementation scenario. In this embodiment, a case where 3 coil taps are provided to the transmission coil will be described as an example. The first wireless charging module 102 also includes a coil tap switching module 123. The coil tap switching module 123 includes a switch S1, a switch S2, and a switch S3. Here, the switch S1, the switch S2, and the switch S3 may be electronic switches, or may be mechanical switches, which is not limited herein. One end of the first wireless charging conversion module 122 is connected to one end of the transmitting coil 101 through a capacitor C1, and the other end of the first wireless charging conversion module 122 is connected to tap 1, tap 2 and tap 3 of the transmitting coil through a switch S1, a switch S2 and a switch S3, respectively. It should be noted here that the tap 1, the tap 2, and the tap 3 on the transmitting coil 101 are three taps at different positions on the transmitting coil 101, and correspond to three different numbers of turns of the transmitting coil 101. Assume N1, N2, and N3, respectively, where N1< N2< N3. For example, assuming that the switch S1 is closed and the switch S2 and the switch S3 are in an open state, one end of the first wireless charging conversion module 122 is connected to the tap 1 through the switch S1, and the number of turns of the transmitting coil is N1. Similarly, if the one end of the first wireless charging conversion module 122 is connected to the tap 2 through the switch S2, the number of turns of the transmitting coil 101 is N2, and if the one end of the first wireless charging conversion module 122 is connected to the tap 3 through the switch S3, the number of turns of the transmitting coil 101 is N3. Here, the number of taps on the transmitting coil and the number of switches in the coil tap switching circuit may be adjusted according to the actual application scenario, and is not limited to 3, and may be more. The embodiment of the utility model provides an only exemplify with this scene of 3 taps and switches, do not possess the limiting action.
the process of the first electronic device 10 triggering the boost of the input electric power of the second battery 203 is described below with reference to fig. 4. When the first control module 121 detects the power boost signal, the first control module 121 may send a command (described below in place of the second command) to the first wireless charging transformation module 122, where the second command is used to trigger the first wireless charging transformation module 122 to control the switch S1, the switch S2, and the switch S3 to be turned on or off, so as to reduce the turn ratio between the transmitting coil 101 and the receiving coil 201, and thus boost the charging power when transmitting power. It should be noted that, according to the electromagnetic induction type wireless charging principle, the ratio of the effective value U1 of the alternating voltage on the transmitting coil 101 to the effective value U2 of the induced voltage on the receiving coil 201 is equal to the ratio of the number of turns Nt of the transmitting coil 101 to the number of turns Nr of the receiving coil 201, i.e., U1/U2 is equal to Nt/Nr. Specifically, assuming that the switch S3 is turned on, the switches S1 and S2 are in an off state, and the number of turns of the receiving coil 201 is N4 at the initial time when the first electronic device charges the second electronic device in the reverse direction, at this time, U1/U2 is N3/N4. After receiving the second command, the first wireless charging conversion module 122 controls the switch S3 to be turned off and the switch S2 to be turned on. Thus, the coil turn ratio of the transmitting coil 101 and the receiving coil 201 is changed from the original N3/N4 to N2/N4. And because N2< N3, the value of U1/U2 is also small. The value of the effective voltage value U1 of the transmitting coil 101 is not changed, so that the value of U2 is increased, that is, the effective value of the induced ac voltage in the receiving coil 201 is increased. This further increases the power of the charging voltage converted by the second wireless charging conversion module 221, and finally increases the charging power when transmitting electric energy. Optionally, the difference values of N1, N2, and N3 may be equal, so that the power difference value of each boost of the charging power during power transmission is the same, and it may be avoided that the charging power during power transmission is too large due to too large charging power during a single boost.
In another possible implementation manner, please refer to fig. 5, and fig. 5 is a schematic structural diagram of a first electronic device according to an embodiment of the present invention. As shown in fig. 5, the first wireless charging module 102 further includes a voltage boosting module 124. One end of the first battery 103 is connected to one end of the first wireless charging conversion module 122 through one end of the boosting module 124. The boosting module 124 is configured to boost a voltage of a dc voltage provided by the first battery, and when a current of the dc voltage is not changed, the transmitting power of the transmitting coil 101 is increased, so that an effective value of an induced ac voltage in the receiving coil 201 is increased, and finally, the charging power during power transmission is increased.
in specific implementation, please refer to fig. 6 together, and fig. 6 is a schematic structural diagram of the boosting module 124 according to an embodiment of the present invention. As shown in fig. 6, the boosting module 124 may include a driving circuit and a voltage boosting circuit. The voltage boosting circuit may include a first switching tube Q1, a second switching tube Q2, a third switching tube Q3, and a fourth switching tube Q4. One end of the first switch Q1 is connected to one end of the first wireless charging conversion module 122 as a voltage output end of the voltage boost module 124. One end of the first switch tube Q1, one end of the second switch tube Q2, one end of the third switch tube Q3, and one end of the fourth switch tube Q4 are respectively connected to one end of a driving circuit, and the other end of the driving circuit is connected to one end of the first control module 121, so as to access the driving control signal provided by the first control module 121. One end of the first switch Q1 is connected to one end of the first wireless charging conversion module 122 as an output end of the voltage boosting circuit, and the other end of the first switch Q1 is connected to one end of the second switch Q2 and one end of the first capacitor C2, respectively. The other end of the second switch tube Q2 is connected to one end of the third switch tube Q3 and one end of the energy storage capacitor C3, and is connected to the first battery 103 as the voltage input end of the voltage boost circuit. The other end of the third switching tube Q3 is connected to one end of the fourth switching tube Q4 and the other end of the first capacitor C2, respectively. The other end of the fourth switch tube Q4 and the other end of the second capacitor C3 are grounded simultaneously.
the process of triggering the first electronic device 10 to boost the input electric power of the second battery 203 will be described with reference to the boost module 124 shown in fig. 6. The first control module 121 may send a driving control signal to the driving circuit when detecting the power boosting signal, so as to instruct the driving circuit to provide the driving signal to 4 switching tubes in the voltage boosting circuit. For example, after receiving the driving control signal, the driving circuit may drive the first switch Q1 and the third switch Q3 to be turned on, and the second switch Q2 and the fourth switch Q4 are in an off state, at which the energy storage capacitors C2 and C3 are in a charged state, and the capacitor voltage thereof may be finally equal to the input voltage of the voltage boost circuit (i.e., the output voltage of the charging power supply). Then, the driving circuit can drive the second switch tube Q2 and the fourth switch tube Q4 to be turned on, the third switch tube Q3 is in an off state, at this time, C2 and C3 are in a discharging state, the output current of the voltage boost circuit is unchanged, the output voltage is equal to the sum of the discharging voltages of the capacitor C2 and the capacitor C3, namely, the output voltage of the voltage boost circuit is equal to 2 times of the input voltage, and 2 times of boost of the input voltage is realized. Under the condition that the output current is not changed, the voltage boosting module 124 may make the input voltage of the first wireless charging conversion module 122 larger, so that the effective value of the alternating voltage in the transmitting coil 101 becomes larger. Under the condition that the coil turn ratio of the transmitting coil 101 to the receiving coil 201 is not changed, the effective value of the induced voltage in the receiving coil 201 can be increased, and finally, the charging power during electric energy transmission is improved. Preferably, the switching tube may be a Field Effect Transistor (FET), a triode, and the like, which is not limited herein. The charging power during the transmission of electric energy is improved by using the boosting module 124, the circuit is simple, the realization is easy, and the electric energy loss can be reduced.
It should be noted that the driving circuit and the voltage boosting circuit described in the embodiments of the present invention are only one possible implementation manner of the voltage boosting module 124, and are not limited. In practical applications, the boosting module 124 may be a boosting chopper circuit, a switching type boost converter, or the like, and is not limited herein.
Optionally, in practical applications, the boosting module 124 may also adopt a form of cascading a plurality of voltage boosting circuits to achieve boosting of different multiples. For example, the boosting module 124 may include two voltage boosting circuits, and an output terminal of a first voltage boosting circuit is connected to an input terminal of a second voltage boosting circuit, so that 4 times of boosting can be achieved under the cooperative driving of the driving circuits. Similarly, 6-time boosting, 8-time boosting and the like can be achieved by adopting a cascade connection mode of a plurality of voltage boosting circuits, and the method is not limited here. The gain of the boosting module can be adjusted according to the actual application scene. It can be understood that, by adopting the way of cascading the voltage boosting circuits, the flexibility of the boosting module can be further improved. For example, assuming that the boost module 124 is formed by cascading two voltage boost circuits, the boost module 124 may implement 2 times of boost (for example, gain control of one voltage boost circuit is 1, and gain control of the other voltage boost circuit is 2) or 4 times of boost (for example, gain control of both voltage boost circuits is 2) according to different driving signals.
It should be noted that, in practical application, after the first electronic device 10 receives a voltage boost signal sent by the second electronic device 20 and triggers to boost the charging power when the electric energy is transmitted, if the second electronic device 20 determines that the charging power when the electric energy is transmitted is still smaller than the preset charging power threshold, a new power boost signal may be continuously sent to the first electronic device 10, so that the first electronic device 10 triggers to boost the charging power when the electric energy is transmitted again. Until the second electronic device 20 determines that the charging power during power transmission is equal to the preset charging power threshold, it stops sending a new power boost signal to the first electronic device 10, so that the first electronic device 10 does not need to trigger the boost of the input electric power of the second battery 203. For example, assume that the input electric power of second battery 203 is 5W at the present time. After detecting the power boost signal transmitted by the second electronic device 20, the first control module 121 may boost the charging power during power transmission from 5W to 5.5W by the two power boost manners described above. After the power boost is implemented, the first control module 121 may continue to detect whether a new power boost signal is received. If the first electronic device 10 receives a new power boost signal again, the charging power during power transmission is triggered to be boosted from 5.5W to 6W. And so on, until the second electronic device 20 determines that the charging power when transmitting the electric energy is equal to the preset charging power threshold. Here, the first electronic device increases the charging power during electric energy transmission in a stepped manner according to the power increase signal sent by the second electronic device, so that the charging power during electric energy transmission can be stably increased, wireless reverse charging can be stably performed, and the stability of the whole charging system can be improved.
Optionally, when the second electronic device 20 determines that the charging power during power transmission is equal to the preset charging power threshold, a power hold signal may be further sent to the first electronic device 10 to instruct the first electronic device 10 to stop triggering the operation of raising the charging power during power transmission, and to maintain the charging power during power transmission at the current time unchanged.
In yet another possible embodiment, the first electronic device 10 may actively trigger the boost of the charging power when transmitting the electric energy. Specifically, in the process of reversely charging the first electronic device 10 to the second electronic device 20, the second control module 221 may detect whether the charging power during power transmission is equal to the preset power threshold in real time. If the second control module 221 detects that the charging power during the electric energy transmission is equal to the preset power threshold, it sends a power maintaining signal to the first electronic device 10, so that the first electronic device 10 stops triggering the operation of increasing the charging power during the electric energy transmission. The first control module 101 may periodically trigger an operation of boosting the charging power when the power is transmitted before detecting the power maintaining signal. For a specific process of boosting the input electric power, reference may be made to the process of boosting the charging power when the electric energy is transmitted by reducing the turn ratio of the coil and boosting the voltage by the voltage boosting module, which is not described herein again. For example, before the power holding signal is detected, the first control module 101 may trigger to boost the charging power during power transmission by a power difference of a preset magnitude when a preset power boosting period comes. Then, when the next power boosting cycle comes, the power difference value with the same magnitude is boosted again until the first control module 101 detects the power maintaining signal transmitted by the second electronic device 20, and then the operation of periodically boosting the charging power when the power is transmitted is stopped. The charging power during electric energy transmission is actively and periodically increased, so that the charging power during electric energy transmission can be increased to a preset power threshold value more quickly, time delay caused by the step-type increase of the charging power is avoided, and the charging efficiency of a charging system is improved.
In yet another possible implementation, in a scenario where the first electronic device 10 actively triggers the boost of the input electric power of the second battery 203, the first electronic device 10 may indirectly detect whether the power maintaining signal fed back by the second electronic device 20 is received by detecting the transmission power of the transmitting coil 101, so as to determine whether the charging power when the electric energy is transmitted is equal to the preset charging power threshold. The first electronic device 10 may detect whether the transmission power of the transmission coil 101 is increasing through the first control module 121. Here, it should be noted that, in the case where the wireless transmission efficiency of the electric energy is stable, the transmission power of the transmission coil 101 and the reception power of the reception coil 201 are proportional. That is, the transmission power of the transmission coil 101 increases as the reception power of the reception coil 201 increases. After the first electronic device 10 actively triggers the first time to boost the input electric power of the second battery 203, the first electronic device 10 may detect whether the transmission power of the transmitting coil 101 is increasing through the first control module 121. If the first control module 121 detects that the transmission power of the transmission coil 101 is increasing, which means that the power of the receiving coil is increasing, the first electronic device 10 may determine that the charging power during power transmission does not reach the preset charging power threshold, and the first electronic device 10 may continue to actively trigger the boost of the input electric power of the second battery 203 until the first control module 121 detects that the transmission power of the transmission coil 101 stops increasing. Whether the charging power during the transmission of the electric energy reaches the preset charging power threshold value is detected by detecting whether the transmitting power of the transmitting coil 101 is increased, so that whether the charging power during the transmission of the electric energy is triggered to be increased or not is determined, adverse effects caused by wireless communication faults between the first electronic device 10 and the second electronic device 20 can be avoided, and the applicability of the charging system can be improved.
in another possible implementation manner, during the process of increasing the charging power of the above-mentioned transmission power by the voltage boosting module 124, the first electronic device 10 may further detect whether the transmitting power of the transmitting coil 101 is greater than or equal to a preset rated transmitting power in real time by the first control module 121. Here, the rated transmission power may be a maximum transmission power of the transmission coil 101 in a normal operation state. If the first control module 121 detects that the transmitting power of the transmitting coil 101 is greater than or equal to the rated transmitting power, it may stop boosting the reverse charging input voltage, that is, the input voltage of the first wireless charging conversion module 122 is no longer boosted. At this time, if the first electronic device 10 receives a new power boost signal, the first control module 121 may further control the first wireless charging transformation module 122 to switch its tap connected to the transmitting coil 101, so as to reduce the coil turn ratio of the transmitting coil 101 and the receiving coil 201, thereby continuing to boost the charging power when transmitting the electric energy until it is equal to the preset charging power threshold. Through the effective combination of the two power boosting methods of boosting the voltage based on the voltage boosting module 124 and reducing the coil turn ratio of the transmitting coil 101 and the receiving coil 201, the stability and the safety of the whole charging system can be improved while the first electronic device 10 provides the proper charging power for the second battery 203.
It should be noted that, in the embodiment of the present invention, the first and second charging circuits before the first charging circuit and the second charging circuit are only used for distinguishing different charging circuits, and do not have other limiting functions. Similarly, the first and second control modules before the names of the first control module and the second control module also have no other limiting function, and are not described here in an example.
it should be noted that the embodiment of the present invention further provides an electronic device and a receiving device. The electronic device may be the first electronic device 10, and the receiving device may be the second electronic device 20. The electronic device can realize the functions of the first electronic device, and the receiving device can realize the functions of the second electronic device 20. Specific functional implementation can be referred to above, and is not described herein again.
In the embodiment of the present invention, "first" and "second" are used to distinguish different objects, or to distinguish different processes on the same object, rather than to describe a specific order of objects.
in the embodiments of the present invention, "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. 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.," in an embodiment of the present invention should not 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.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (19)
1. A charging system, comprising a first electronic device comprising a transmitting coil and a second electronic device comprising a receiving coil;
the first electronic device is configured to transmit power to the second electronic device when a receive coil of the second electronic device is proximate to a transmit coil of the first electronic device;
The second electronic device is configured to send a charging power boost signal to the first electronic device when the charging power of the first electronic device when transmitting electric energy to the second electronic device is less than a preset power threshold;
The first electronic device is configured to change the number of turns of the transmitting coil after receiving the charging power boost signal, or boost a charging voltage of the first electronic device, so as to boost the charging power when the first electronic device transmits the electric energy to the second electronic device.
2. The charging system of claim 1, wherein the first electronic device further comprises a first battery and a first wireless charging module;
The first wireless charging module is used for converting direct-current voltage provided by the first battery into alternating-current voltage, and the transmitting coil is used for converting the alternating-current voltage into electric energy and transmitting the electric energy obtained by conversion to the second electronic device.
3. The charging system according to claim 2, wherein at least a first coil tap and a second coil tap are provided on the transmitting coil, the number of turns of the coil corresponding to the first coil tap is less than the number of turns of the coil corresponding to the second coil tap, and the first wireless charging module comprises a coil tap switching module, a first wireless charging conversion module and a first control module;
The first control module is used for transmitting a coil turn number reduction signal to the coil tap switching module when the first wireless charging conversion module detects the charging power boost signal;
The coil tap switching module is used for switching a coil tap connected between the transmitting coil and the first wireless charging conversion module from the first coil tap to the second coil tap when detecting the number-of-turns reduction signal of the coil, so as to improve charging power when the first electronic device transmits electric energy to the second electronic device.
4. The charging system according to claim 3, wherein the first electronic device further comprises a boost module, and one end of the first battery is connected with one end of the first wireless charging conversion module through the boost module;
The first control module is used for sending a voltage boosting signal to the boosting module when the first wireless charging conversion module detects the charging power boosting signal;
The voltage boosting module is used for keeping the charging current unchanged and boosting the charging voltage of the first electronic device after the voltage boosting signal is detected so as to boost the charging power when the first electronic device transmits electric energy to the second electronic device.
5. The charging system according to claim 4, wherein the boost module comprises a driving circuit and a voltage boost circuit, and the voltage boost circuit comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a first capacitor and a second capacitor;
Wherein: one end of the first switch tube is connected with one end of the first wireless charging conversion module as the output end of the boosting module, one ends of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are respectively connected with one end of the driving circuit, the other end of the driving circuit is connected with one end of the first control module, the other end of the first switch tube is respectively connected with the other end of the second switch tube and one end of the first capacitor, the other end of the second switch tube is respectively connected with the other end of the third switch tube and one end of the second capacitor and is simultaneously connected with the first battery as the input end of the boosting module, and the other end of the third switch tube is respectively connected with the other end of the fourth switch tube and the other end of the first capacitor, and the other end of the fourth switching tube and the other end of the second capacitor are grounded together.
6. the charging system of claim 5, wherein the second electronic device is further configured to transmit a power hold signal to the first electronic device upon detecting that the charging power at which the first electronic device transmits power to the second electronic device is equal to a preset power threshold;
The first electronic device is further configured to trigger, when the power hold signal is detected, to maintain the charging power level when the first electronic device transmits the electric energy to the second electronic device unchanged.
7. The charging system of any of claims 1-6, wherein the second electronic device comprises a receiving coil, a second wireless charging module, a second battery;
The receiving coil is used for receiving the electric energy transmitted by the transmitting coil and converting the electric energy into induced alternating voltage;
The second wireless charging module is used for converting the induced alternating-current voltage into an induced direct-current voltage and inputting the induced direct-current voltage to the second battery.
8. a charging system, comprising a first electronic device comprising a transmitting coil and a second electronic device comprising a receiving coil;
The first electronic device is configured to transmit power to the second electronic device when a receive coil of the second electronic device is proximate to a transmit coil of the first electronic device;
The first electronic device is configured to change the number of turns of the transmitting coil or boost the charging voltage of the first electronic device when a preset power boosting cycle is reached, so as to boost the charging power when the first electronic device transmits electric energy to the second electronic device;
The second electronic device is configured to send a charging power maintaining signal to the first electronic device when the charging power of the first electronic device when transmitting electric energy to the second electronic device is equal to a preset power threshold;
the first electronic device is further configured to trigger maintaining of the charging power level of the first electronic device when the first electronic device transmits the electric energy to the second electronic device when the charging power keeping signal is received.
9. the charging system of claim 8, wherein the first electronic device comprises a transmitting coil, a first wireless charging module, and a first battery;
The first wireless charging module is used for converting direct-current voltage provided by the first battery into alternating-current voltage and transmitting the alternating-current voltage to the transmitting coil;
the transmitting coil is used for converting the alternating voltage into electric energy and transmitting the electric energy obtained by conversion to the second electronic equipment.
10. The charging system according to claim 9, wherein at least a first coil tap and a second coil tap are provided on the transmission coil, the number of coil turns corresponding to the first coil tap is less than the number of coil turns corresponding to the second coil tap, and the first wireless charging module comprises a coil tap switching module, a first wireless charging conversion module and a first control module;
The first control module is used for transmitting a coil turn number reduction signal to the coil tap switching module when the power boost period is detected to be reached;
The coil tap switching module is used for switching a coil tap connected between the transmitting coil and the first wireless charging conversion module from the first coil tap to the second coil tap when detecting the number-of-turns reduction signal of the coil, so as to improve charging power when the first electronic device transmits electric energy to the second electronic device.
11. the charging system according to claim 10, wherein the first electronic device further comprises a boost module, and one end of the first battery is connected to one end of the first wireless charging conversion module through the boost module;
The first control module is used for sending a voltage boosting signal to the boosting module when the power boosting cycle is detected to arrive;
The voltage boosting module is used for keeping the charging current unchanged and boosting the charging voltage of the first electronic device after the voltage boosting signal is detected so as to boost the charging power when the first electronic device transmits electric energy to the second electronic device.
12. The charging system according to claim 11, wherein the boost module comprises a driving circuit and a voltage boost circuit, and the voltage boost circuit comprises a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first capacitor and a second capacitor;
Wherein: one end of the first switch tube is connected with one end of the first wireless charging conversion module as the output end of the boosting module, one ends of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are respectively connected with one end of the driving circuit, the other end of the driving circuit is connected with one end of the first control module, the other end of the first switch tube is respectively connected with the other end of the second switch tube and one end of the first capacitor, the other end of the second switch tube is respectively connected with the other end of the third switch tube and one end of the second capacitor and is simultaneously connected with the first battery as the input end of the boosting module, and the other end of the third switch tube is respectively connected with the other end of the fourth switch tube and the other end of the first capacitor, and the other end of the fourth switching tube and the other end of the second capacitor are grounded together.
13. The charging system of claim 12, wherein the second electronic device further comprises a receiving coil, a second wireless charging module, a second battery;
The receiving coil is used for receiving the electric energy transmitted by the transmitting coil and converting the electric energy transmitted by the transmitting coil into induced alternating voltage;
The second wireless charging module is used for converting the induced alternating-current voltage into an induced direct-current voltage and inputting the induced direct-current voltage to the second battery.
14. an electronic device, characterized in that the electronic device comprises a battery and a transmitting coil;
when a receiving coil of a receiving device is proximate to a transmitting coil of the electronic device, the electronic device is configured to transmit power to the receiving device;
the electronic device is further configured to change the number of turns of the transmitting coil or increase a charging voltage of the electronic device after detecting a charging power increase signal sent by the receiving device, so as to increase the charging power when the electronic device transmits electric energy to the receiving device, wherein the power increase signal is sent when the receiving device detects that the charging power is smaller than a preset power threshold.
15. The electronic device of claim 14, further comprising a first wireless charging module;
the first wireless charging module is used for converting direct-current voltage provided by the battery into alternating-current voltage, and the transmitting coil is used for converting the alternating-current voltage into electric energy and transmitting the converted electric energy to the receiving device.
16. The electronic device of claim 15, wherein at least a first coil tap and a second coil tap are disposed on the transmitting coil, the number of turns of the coil corresponding to the first coil tap is less than the number of turns of the coil corresponding to the second coil tap, and the first wireless charging module comprises a coil tap switching module, a first wireless charging conversion module and a first control module;
The first control module is used for transmitting a coil turn number reduction signal to the coil tap switching module when the first wireless charging conversion module detects the charging power boost signal;
the coil tap switching module is used for switching a coil tap connected between the transmitting coil and the first wireless charging conversion module from the first coil tap to the second coil tap when detecting the number-of-turns reduction signal of the coil, so as to improve charging power when transmitting electric energy to the receiving equipment.
17. the electronic device of claim 16, further comprising a boost module, wherein one end of the battery is connected to one end of the first wireless charging conversion module through the boost module;
the first control module is used for sending a voltage boosting signal to the boosting module when the first wireless charging conversion module detects the charging power boosting signal;
The voltage boosting module is used for keeping the charging current unchanged and boosting the charging voltage of the electronic equipment after the voltage boosting signal is detected so as to boost the charging power when the electric energy is transmitted to the receiving equipment.
18. The electronic device of claim 17, wherein the boost module comprises a driving circuit and a voltage boost circuit, and the voltage boost circuit comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a first capacitor and a second capacitor;
wherein: one end of the first switch tube is connected with one end of the first wireless charging conversion module as the output end of the boosting module, one ends of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are respectively connected with one end of the driving circuit, the other end of the driving circuit is connected with one end of the first control module, the other end of the first switch tube is respectively connected with the other end of the second switch tube and one end of the first capacitor, the other end of the second switch tube is respectively connected with the other end of the third switch tube and one end of the second capacitor and is simultaneously connected with the battery as the input end of the boosting module, and the other end of the third switch tube is respectively connected with the other end of the fourth switch tube and the other end of the first capacitor, and the other end of the fourth switching tube and the other end of the second capacitor are grounded together.
19. the electronic device of any one of claims 14-18, wherein the electronic device is further configured to trigger maintaining of a constant charging power level when the electronic device transmits power to the receiving device when detecting a power hold signal, wherein the power hold signal is transmitted when the receiving device detects that the charging power is equal to a preset power threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920232052.XU CN209805437U (en) | 2019-02-23 | 2019-02-23 | Charging system and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920232052.XU CN209805437U (en) | 2019-02-23 | 2019-02-23 | Charging system and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805437U true CN209805437U (en) | 2019-12-17 |
Family
ID=68822831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920232052.XU Active CN209805437U (en) | 2019-02-23 | 2019-02-23 | Charging system and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209805437U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742824A (en) * | 2019-02-23 | 2019-05-10 | 华为技术有限公司 | Charging system and electronic equipment |
| CN113054691A (en) * | 2019-12-26 | 2021-06-29 | 华为技术有限公司 | Wireless charging method of mobile terminal and mobile terminal |
| CN113972728A (en) * | 2020-07-21 | 2022-01-25 | 北京小米移动软件有限公司 | Wireless charging method, device, terminal and storage medium |
-
2019
- 2019-02-23 CN CN201920232052.XU patent/CN209805437U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742824A (en) * | 2019-02-23 | 2019-05-10 | 华为技术有限公司 | Charging system and electronic equipment |
| CN113054691A (en) * | 2019-12-26 | 2021-06-29 | 华为技术有限公司 | Wireless charging method of mobile terminal and mobile terminal |
| CN113972728A (en) * | 2020-07-21 | 2022-01-25 | 北京小米移动软件有限公司 | Wireless charging method, device, terminal and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020169010A1 (en) | Charging system and electronic device | |
| US10348134B2 (en) | Method and apparatus for controlling wireless charging during mode transition of a wireless power receiving device | |
| US10205353B2 (en) | Apparatus and method for charging control in wireless charging system | |
| US10432037B2 (en) | Wireless power receiver and controlling method thereof | |
| KR102207502B1 (en) | Wireless charging receiving device, charging system and terminal | |
| CN110994810B (en) | Wireless charging electronic equipment and method | |
| US9490652B2 (en) | Wireless charger equipped with auxiliary power supply and auxiliary power device | |
| CN209805437U (en) | Charging system and electronic device | |
| US9583970B2 (en) | Wireless power transfer and rapid charging system and method with maximum power tracking | |
| EP2947746A1 (en) | Method for performing efficiency optimization of an electronic device, and associated apparatus | |
| EP3025406B1 (en) | Systems and methods for extending the power capability of a wireless charger | |
| CN213185645U (en) | Wireless power receiving circuit and electronic device | |
| KR20180118786A (en) | Fast charging method and system, terminal and charger | |
| US10164472B2 (en) | Method and apparatus for wirelessly charging portable electronic devices | |
| KR20180096819A (en) | Reducing power dissipation in inductive energy transfer systems | |
| US20210242771A1 (en) | Multi-mode dc-to-dc power converter | |
| US10523035B2 (en) | Multi-tapped coil for wireless charging range and efficiency | |
| CN112072766A (en) | Charging device | |
| JP2019175756A (en) | Control device, power receiving device and electronic apparatus | |
| JP2014036504A (en) | Electronic apparatus, charge control method and charge control program | |
| JP7397670B2 (en) | Wireless power receiving device, wireless charging method and system | |
| JP2017070182A (en) | Power reception device and wireless power transmission system | |
| US10903676B2 (en) | Semiconductor device | |
| CN213484551U (en) | Portable power source circuit and portable power source | |
| US20230006450A1 (en) | Power System Configurations for Wireless Charging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |