CN109617163B - Wireless charging device and method based on infrared detection - Google Patents
Wireless charging device and method based on infrared detection Download PDFInfo
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- CN109617163B CN109617163B CN201811563996.1A CN201811563996A CN109617163B CN 109617163 B CN109617163 B CN 109617163B CN 201811563996 A CN201811563996 A CN 201811563996A CN 109617163 B CN109617163 B CN 109617163B
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- 238000001514 detection method Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims description 22
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- H02J7/0077—
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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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- H02J7/0091—
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a wireless charging device based on infrared detection, which comprises a main control module, an infrared detection module, a charge-discharge control module and a wireless transmission module, wherein the main control module is respectively connected with the infrared detection module, the charge-discharge control module and the wireless transmission module, the charge-discharge control module is connected with the wireless transmission module, and the infrared detection module is used for detecting whether a mobile terminal to be charged is needed. The invention further provides a wireless charging method based on infrared detection. The invention relates to the technical field of wireless charging, and aims to solve the technical problems that in the prior art, a transmitting coil of a wireless charger is always in a transmitting working state, so that electric quantity is wasted, and the invention realizes effective electric quantity saving and electric quantity waste avoiding by adopting infrared detection to detect whether a mobile terminal to be charged exists or not, and further controlling a wireless transmitting module in a wireless charging device to start or stop charging.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to a wireless charging control device and method based on infrared detection.
Background
Along with the use of the mobile terminal becoming more frequent, the standby time of the mobile terminal becomes shorter and shorter, the charging becomes more frequent, wireless charging becomes the mainstream trend of the charging technology, the wireless charging adopts radio wave and electromagnetic induction technology, current is induced through a transmitting coil in a wireless charger and a receiving coil in equipment to be charged, the induced current is converted into electromagnetic wave signals, and after the electromagnetic wave signals are transmitted from the wireless charger to the equipment to be charged, the received electromagnetic wave signals are converted into direct current power used for charging the equipment through a receiving device in the equipment to be charged, so that the battery of the equipment is charged. However, in the prior art, the transmitting coil of the wireless charger is always in a transmitting working state, which causes waste of electric quantity.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a wireless charging device and method based on infrared detection, which effectively saves electricity and avoids waste of electricity.
The technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides a wireless charging device based on infrared detection, which comprises a main control module, an infrared detection module, a charge-discharge control module and a wireless transmission module, wherein the main control module is respectively connected with the infrared detection module, the charge-discharge control module and the wireless transmission module, the charge-discharge control module is connected with the wireless transmission module, and the infrared detection module is used for detecting whether a mobile terminal to be charged exists.
As a further improvement of the scheme, the charge-discharge control module comprises a discharge control driving circuit and a charge-discharge management circuit, wherein the output end of the main control module is connected with the input end of the discharge control driving circuit, the output end of the discharge control driving circuit is connected with the input end of the charge-discharge management circuit, and the output end of the charge-discharge management circuit is connected with the input end of the wireless transmitting module.
As a further improvement of the scheme, the charge-discharge management circuit comprises a charge-discharge management chip and a wireless discharge sub-circuit, wherein the output end of the discharge control driving circuit is connected with the input end of the charge-discharge management chip, and the output end of the charge-discharge management chip is connected with the input end of the wireless discharge sub-circuit.
As a further improvement of the above scheme, the charge-discharge management circuit further comprises a charge-discharge interface sub-circuit, and the charge-discharge interface sub-circuit is connected with the charge-discharge management chip.
As a further improvement of the above scheme, the wireless transmitting module comprises a coil driving circuit and a transmitting coil, wherein the output end of the charge-discharge management circuit is connected with the input end of the coil driving circuit, and the output end of the coil driving circuit is connected with the input end of the transmitting coil.
As a further improvement of the above scheme, the device further comprises a current and voltage detection module, wherein the current and voltage detection module is respectively connected with the main control module and the wireless transmission module, and the current and voltage detection module is used for detecting whether the wireless transmission module is in a charging state.
As a further improvement of the scheme, the device further comprises a temperature detection module, and the temperature detection module is connected with the main control module.
As a further improvement of the scheme, the device further comprises a quick charge control module, and the quick charge control module is respectively connected with the main control module and the charge and discharge control module.
In a second aspect, the present invention provides a wireless charging method based on infrared detection, which is applied to a wireless charging device, where the wireless charging device includes a wireless transmitting module, and the method includes:
if the infrared detection is carried out on the mobile terminal to be charged, a wireless transmitting module of the wireless charging device is controlled to start charging;
and if the infrared detection shows that the mobile terminal is not to be charged, controlling the wireless transmitting module of the wireless charging device to close charging.
As a further improvement of the above solution, if the mobile terminal to be charged is detected by infrared, controlling the wireless transmitting module of the wireless charging device to start charging specifically includes:
if the infrared detection is carried out on the mobile terminal to be charged, a wireless transmitting module of the wireless charging device is controlled to start charging;
detecting charging voltage and charging current of the wireless charging device, judging whether the mobile terminal is in a receiving charging state, if so, keeping the charging state, and if not, controlling a wireless transmitting module of the wireless charging device to close charging.
The beneficial effects of the invention are as follows:
according to the invention, whether the mobile terminal to be charged is detected by infrared is adopted, so that the wireless transmitting module in the wireless charging device is controlled to be started or stopped to be charged, the technical problem that the transmitting coil of the wireless charger is always in a transmitting working state in the prior art, so that electric quantity is wasted is solved, the electric quantity is effectively saved, and the electric quantity is prevented from being wasted.
In addition, the invention also judges whether the mobile terminal is in a receiving charging state or not by detecting the charging voltage and the charging current of the wireless charging device, thereby controlling the wireless transmitting module in the wireless charging device to start or stop charging, and avoiding electric quantity waste caused by unsuccessful charging of the mobile terminal and the wireless charging device.
Drawings
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
fig. 1 is a schematic block diagram of a wireless charging device based on infrared detection according to a first embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a connection between a main control module and an infrared detection module, between a temperature detection module and a fast charging control module in a wireless charging device based on infrared detection according to a first embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a charge/discharge control module in a wireless charging device based on infrared detection according to a first embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a wireless transmitting module in a wireless charging device based on infrared detection according to a first embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a connection between a main control module and a current and voltage detection module in a wireless charging device based on infrared detection according to the first embodiment of the present invention;
fig. 6 is a schematic flow chart of a wireless charging method based on infrared detection according to a second embodiment of the invention.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Example 1
Fig. 1 is a schematic block diagram of a wireless charging device based on infrared detection according to a first embodiment of the present invention, and referring to fig. 1, a wireless charging device based on infrared detection includes a main control module, an infrared detection module, a charge-discharge control module, and a wireless transmitting module. The main control module is respectively connected with the infrared detection module, the charge and discharge control module and the wireless transmission module, the charge and discharge control module is connected with the wireless transmission module, and the infrared detection module is used for detecting whether the mobile terminal is to be charged. The mobile terminal may be a cell phone, tablet, etc. with a wireless receiving module. The infrared detection module detects whether a mobile terminal to be charged exists on the wireless charging device, if the mobile terminal to be charged is detected, an infrared feedback signal is sent to the main control module, the main control module sends a wake-up signal to the charge-discharge control module, and the charge-discharge control module is controlled to drive the wireless transmitting module to start charging.
Fig. 2 is a circuit schematic diagram of connection between a main control module and an infrared detection module, a temperature detection module and a fast charging control module in a wireless charging device based on infrared detection according to an embodiment of the present invention, referring to fig. 2, the main control module 1 includes a main control chip U1, in this embodiment, the main control chip U1 adopts a GPMQ8005B chip, when the infrared detection module 2 detects a mobile terminal to be charged, an infrared feedback signal is sent to a pin P37 of the main control chip U1 through an output pin OUT, and after the main control chip U1 receives the infrared feedback signal, a wake-up signal is output to the charging/discharging control module through a pin P36.
Fig. 3 is a schematic circuit diagram of a charge-discharge control module in a wireless charging device based on infrared detection according to an embodiment of the present invention, referring to fig. 3, the charge-discharge control module includes a discharge control driving circuit 5 and a charge-discharge management circuit 6, the discharge control driving circuit 5 includes a control driving chip U6, in this embodiment, the control driving chip U6 adopts an HR7P153P4SC chip, the charge-discharge management circuit 6 includes a charge-discharge management chip U8, a wireless discharge sub-circuit 61 and a charge-discharge interface sub-circuit 62, and the charge-discharge management chip U8 is respectively connected with the wireless discharge sub-circuit 61 and the charge-discharge interface circuit 62. The output end of the amplifying control driving circuit is connected with the input end of the charge and discharge management chip U8. When the main control chip U1 receives the infrared feedback signal, a wake-up signal is output to the control driving chip U6 through the pin P36, after the pin PA5 of the control driving chip U6 receives the wake-up signal, the charge and discharge management chip U8 is driven by sending a driving signal through the pin PA0 and the pin PA1, and after the charge and discharge management chip U8 receives the driving signal, the wireless discharge sub-circuit 61 is controlled to start discharging.
In this embodiment, the charge-discharge interface sub-circuit 62 includes a Type C interface, and the charge-discharge management chip U8 may perform wired charging on the mobile terminal by controlling the charge-discharge interface sub-circuit 62, or may perform wired charging on the wireless charging device by controlling the charge-discharge interface sub-circuit 62 to receive an external power supply. The wireless charging device in this embodiment may also provide wired charging for the terminal through the Type C interface.
Fig. 4 is a circuit schematic diagram of a wireless transmitting module in a wireless charging device based on infrared detection according to a first embodiment of the present invention, referring to fig. 4, the wireless transmitting module includes a coil driving circuit and a transmitting coil L1, an output end of a charge/discharge management circuit is connected with an input end of the coil driving circuit, and an output end of the coil driving circuit is connected with an input end of the transmitting coil L1. The DC output end DC_IN of the wireless discharging sub-circuit 61 outputs +5V voltage through the LDO voltage stabilizing chip U2, working voltage is provided for the driving chips U3 and U4 through the +5V voltage output, the driving chips U3 and U4 drive MOS tubes IN the wireless charging MOS chips Q2 and Q3 to be conducted, and then the transmitting coil L1 is driven to start to generate certain current through electromagnetic induction to a mobile terminal to be charged, so that the mobile terminal is wirelessly charged. In this embodiment, the wireless MOS-charged die Q2, Q3 are DMT3009LDT chips.
The wireless charging device in this embodiment further includes a current-voltage detection module, and fig. 5 is a schematic circuit diagram of connection between the main control module and the current-voltage detection module in the wireless charging device based on infrared detection according to the first embodiment of the present invention, and in combination with fig. 4 and fig. 5, the current-voltage detection module is connected to the main control module and the wireless transmission module, respectively, and is used for detecting whether the wireless transmission module is in a charging state. Specifically, the current and voltage detection module comprises a current detection circuit 7 and a voltage detection circuit 8, the current detection circuit 7 samples the charging current of the transmitting coil L1, the collected charging current is fed back to the main control chip U1, the voltage detection circuit 8 samples the charging voltage of the transmitting coil L1, the collected charging voltage is fed back to the main control chip U1, the main control chip U1 further judges whether the transmitting coil L1 is in a charging state or not through receiving the sampled charging current and the sampled charging voltage, and further controls the opening and closing of charging (namely, the output of a wake-up signal of a control pin P36).
Referring to fig. 2, the wireless charging device in this embodiment further includes a temperature detection module 3, where the temperature detection module 3 is connected to the main control module 1 and is configured to detect a temperature of the wireless charging device, and when the temperature is greater than a set temperature value, control the wireless charging device to stop discharging or charging.
The wireless charging device in this embodiment further includes a fast charging control module 4, where the fast charging control module 4 is connected to the main control chip U1, and supports a fast charging mode and a normal charging mode.
According to the invention, whether the mobile terminal to be charged is detected by infrared is adopted, so that the wireless transmitting module in the wireless charging device is controlled to be started or stopped to be charged, the technical problem that the transmitting coil of the wireless charger is always in a transmitting working state in the prior art, so that electric quantity is wasted is solved, the electric quantity is effectively saved, and the electric quantity is prevented from being wasted.
In addition, the invention also judges whether the mobile terminal is in a receiving charging state or not by detecting the charging voltage and the charging current of the wireless charging device, thereby controlling the wireless transmitting module in the wireless charging device to start or stop charging, and avoiding electric quantity waste caused by unsuccessful charging of the mobile terminal and the wireless charging device.
Example two
Fig. 6 is a schematic flow chart of a wireless charging method based on infrared detection according to a second embodiment of the present invention, and referring to fig. 6, a wireless charging method based on infrared detection is applied to a wireless charging device, where the wireless charging device includes a wireless transmitting module, and includes steps S1 to S5.
S1, infrared detection is carried out to determine whether a mobile terminal to be charged exists, if not, the step S2 is executed, and if yes, the step S3 is executed;
s2, controlling a wireless transmitting module of the wireless charging device to close charging;
s3, controlling a wireless transmitting module of the wireless charging device to start charging, and further executing step S4;
s4, detecting charging voltage and charging current of the wireless charging device, judging whether the mobile terminal is in a receiving charging state, if not, executing the step S2, and if so, executing the step S5;
s5, the wireless transmitting module of the wireless charging device keeps a charging state.
The wireless charging method based on infrared detection provided by the second embodiment of the invention is applicable to the wireless charging device based on infrared detection provided by the first embodiment, and the working principles and the beneficial effects of the wireless charging device are in one-to-one correspondence, so that the wireless charging device is not repeated.
According to the invention, whether the mobile terminal to be charged is detected by infrared is adopted, so that the wireless transmitting module in the wireless charging device is controlled to be started or stopped to be charged, the technical problem that the transmitting coil of the wireless charger is always in a transmitting working state in the prior art, so that electric quantity is wasted is solved, the electric quantity is effectively saved, and the electric quantity is prevented from being wasted.
In addition, the invention also judges whether the mobile terminal is in a receiving charging state or not by detecting the charging voltage and the charging current of the wireless charging device, thereby controlling the wireless transmitting module in the wireless charging device to start or stop charging, and avoiding electric quantity waste caused by unsuccessful charging of the mobile terminal and the wireless charging device.
While the preferred embodiment of the present invention has been described in detail, the invention is not limited to the embodiment, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (5)
1. The wireless charging device based on infrared detection is characterized by comprising a main control module, an infrared detection module, a charge-discharge control module and a wireless transmission module, wherein the main control module is respectively connected with the infrared detection module, the charge-discharge control module and the wireless transmission module, the charge-discharge control module is connected with the wireless transmission module, and the infrared detection module is used for detecting whether a mobile terminal to be charged exists or not; if the infrared detection module detects the mobile terminal to be charged, an infrared feedback signal is sent to the main control module, and the main control module sends a wake-up signal to the charge-discharge control module to control the charge-discharge control module to drive the wireless transmitting module to start charging; if the infrared detection module detects that the mobile terminal is not to be charged, the wireless transmission module is controlled to be closed for charging; the charging and discharging control module comprises a discharging control driving circuit and a charging and discharging management circuit, wherein the output end of the main control module is connected with the input end of the discharging control driving circuit, the output end of the discharging control driving circuit is connected with the input end of the charging and discharging management circuit, and the output end of the charging and discharging management circuit is connected with the input end of the wireless transmitting module; the discharge control driving circuit comprises a control driving chip, and the control driving chip adopts an HR7P153P4SC chip; the charging and discharging management circuit comprises a charging and discharging management chip, a wireless discharging sub-circuit and a charging and discharging interface sub-circuit, wherein the output end of the discharging control driving circuit is connected with the input end of the charging and discharging management chip, the output end of the charging and discharging management chip is connected with the input end of the wireless discharging sub-circuit, and the charging and discharging interface sub-circuit is connected with the charging and discharging management chip;
the device further comprises a current and voltage detection module, wherein the current and voltage detection module is respectively connected with the main control module and the wireless transmission module, and the current and voltage detection module is used for detecting whether the wireless transmission module is in a charging state or not;
the main control module receives the charging voltage and the charging current acquired by the current and voltage detection module, judges whether the mobile terminal is in a receiving charging state according to the charging voltage and the charging current, if so, the charging state is maintained, and if not, the wireless transmitting module is controlled to be closed.
2. The infrared detection-based wireless charging device according to claim 1, wherein the wireless transmitting module comprises a coil driving circuit and a transmitting coil, an output end of the charge-discharge management circuit is connected with an input end of the coil driving circuit, and an output end of the coil driving circuit is connected with an input end of the transmitting coil.
3. The infrared detection-based wireless charging device of claim 1, further comprising a temperature detection module, wherein the temperature detection module is coupled to the master control module.
4. The wireless charging device based on infrared detection according to claim 1, further comprising a fast charging control module, wherein the fast charging control module is respectively connected with the main control module and the charging and discharging control module.
5. A wireless charging method based on infrared detection, applied to a wireless charging device based on infrared detection as claimed in any one of claims 1 to 4, wherein the wireless charging device comprises a wireless transmitting module, and is characterized in that the wireless charging device comprises:
if the infrared detection is carried out on the mobile terminal to be charged, a wireless transmitting module of the wireless charging device is controlled to start charging;
if the infrared detection does not detect the mobile terminal to be charged, controlling a wireless transmitting module of the wireless charging device to close charging;
if the infrared detects the mobile terminal to be charged, controlling the wireless transmitting module of the wireless charging device to start charging specifically comprises:
if the infrared detection is carried out on the mobile terminal to be charged, a wireless transmitting module of the wireless charging device is controlled to start charging;
detecting charging voltage and charging current of the wireless charging device, judging whether the mobile terminal is in a receiving charging state, if so, keeping the charging state, and if not, controlling a wireless transmitting module of the wireless charging device to close charging.
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| CN201811563996.1A CN109617163B (en) | 2018-12-20 | 2018-12-20 | Wireless charging device and method based on infrared detection |
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| CN201811563996.1A CN109617163B (en) | 2018-12-20 | 2018-12-20 | Wireless charging device and method based on infrared detection |
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