CN114069893A - Wireless charging base and system - Google Patents
Wireless charging base and system Download PDFInfo
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- CN114069893A CN114069893A CN202111424637.XA CN202111424637A CN114069893A CN 114069893 A CN114069893 A CN 114069893A CN 202111424637 A CN202111424637 A CN 202111424637A CN 114069893 A CN114069893 A CN 114069893A
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- 238000001514 detection method Methods 0.000 claims abstract description 62
- 238000004891 communication Methods 0.000 claims description 4
- 210000000707 wrist Anatomy 0.000 abstract description 19
- 238000010586 diagram Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a wireless charging base and a wireless charging system. The detection module is used for detecting the position related information of the wrist-worn device placed on the wireless charging base; the main control module is used for judging whether the wrist-worn equipment is placed at a standard charging position of the wireless charging base or not according to the position related information; if not, the control prompting module carries out charging deviation prompting. It is thus clear that this application can detect whether the wrist wears the standard charge position of equipment skew wireless charging base to charge off normal suggestion when the wrist wears the equipment skew standard charge position, with the charge position that reminds the user to need to adjust wrist and wear equipment, thereby avoid wrist and wear equipment off normal that charges, improved wrist and wear the charge efficiency of equipment, shortened the charge time, reduced equipment calorific capacity, promoted user's use experience.
Description
Technical Field
The invention relates to the field of wireless charging, in particular to a wireless charging base and a wireless charging system.
Background
At present, more and more intelligent wrist-worn equipment converts original wired charging mode or contact charging mode into wireless charging mode. Under the wireless mode of charging, wear equipment for intelligence wrist and be equipped with wireless charging base, the user when charging at every turn, directly wears equipment with intelligence wrist and places and can realize charging on wireless charging base, and it specifically wears equipment and wireless charging coil realization wireless charging that sets up in the base through intelligence wrist. However, because the relative position that intelligence wrist-worn device placed on wireless charging base at every turn is unset, so often can have the charging coil in the wireless charging base and the charging coil in the intelligence wrist-worn device the unable condition of coincidence completely in the vertical direction, lead to intelligence wrist-worn device's charge efficiency to reduce, charge time overlength, calorific capacity is great to influence user's use and experience.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a wireless charging base and a wireless charging system, which are used for prompting charging deviation when a wrist-worn device deviates from a standard charging position so as to remind a user of adjusting the charging position of the wrist-worn device, so that the charging deviation of the wrist-worn device is avoided, the charging efficiency of the wrist-worn device is improved, the charging time is shortened, the heat productivity of the device is reduced, and the use experience of the user is improved.
In order to solve the above technical problem, the present invention provides a wireless charging base, including:
a prompt module;
the detection module is used for detecting the position related information of the wrist-worn equipment placed on the wireless charging base;
the main control module is used for judging whether the wrist-worn equipment is placed at a standard charging position of the wireless charging base or not according to the position related information; if not, the prompting module is controlled to prompt charging deviation.
Optionally, a magnet is disposed in the wrist-worn device;
the detection module comprises:
the magnetic field detection circuit is used for detecting the magnetic field condition of the position of the magnetic field detection circuit;
the main control module is specifically configured to determine, according to the magnetic field condition, relative position information between the wireless charging base and the wrist-worn device, and determine, according to the relative position information, whether the wrist-worn device is placed at the standard charging position; if not, the prompting module is controlled to prompt charging deviation.
Optionally, the magnetic field detection circuit comprises:
the Hall devices are arranged in the wireless charging base; each Hall device is used for detecting the magnetic field polarity and the magnetic field size of the position of the Hall device;
the main control module is specifically configured to determine the relative position information between the wireless charging base and the wrist-worn device according to the magnetic field polarity and the magnetic field magnitude detected by the plurality of hall devices.
Optionally, the magnet is located at a central location inside a first charging coil of the wrist-worn device;
the plurality of hall devices includes:
the first Hall device is positioned at the central position inside a second charging coil of the wireless charging base;
a plurality of second hall devices located at a periphery of the second charging coil; the distances between the second Hall devices and the first Hall device are the same, and the positions of the second Hall devices are sequentially connected to form a regular polygon;
the main control module is specifically configured to determine that the wrist-worn device is placed at the standard charging position if the polarities of the magnetic fields detected by the first hall device and the second hall devices are different, the magnetic field intensity detected by the first hall device is the largest, and the magnetic field intensities detected by the plurality of second hall devices are the same; if the polarities of the magnetic fields detected by all the Hall devices are the same, the magnetic field intensity detected by the first Hall device is the maximum, and the magnetic field intensities detected by the plurality of second Hall devices are inconsistent, determining that the wrist-worn device is slightly off-position during charging; and if the magnetic field polarity detected by one target Hall device is different from the magnetic field polarities of the rest Hall devices in the second Hall device, the magnetic field strength detected by the target Hall device is the maximum, and the magnetic field strengths detected by the rest Hall devices are inconsistent, determining that the wrist-worn device is severely off-position during charging.
Optionally, the prompting module includes:
the indicating module is connected with the main control module;
the main control module is specifically configured to determine a charging offset degree of the wrist-worn device according to a detection result of the detection module, and control the indication module to perform corresponding charging offset indication according to the charging offset degree.
Optionally, the prompting module further includes:
the vibration module is connected with the main control module;
the main control module is further configured to control the vibration module to vibrate at a corresponding frequency according to the charging deviation degree; the larger the charging deviation degree is, the higher the vibration frequency of the vibration module is.
Optionally, the wireless charging base further comprises:
the power management chip is respectively connected with the direct current power supply and the second charging coil of the wireless charging base and used for carrying out wireless communication on the wrist-worn device through the second charging coil so as to obtain the charging demand current of the wrist-worn device, and carrying out inversion operation on the output voltage of the direct current power supply according to the charging demand current so as to provide the required charging current for the wrist-worn device.
Optionally, the power management chip is further connected to the main control module, the detection module and the prompt module respectively;
the power supply management chip is also used for carrying out voltage regulation operation on the output voltage of the direct current power supply according to the power supply demand voltage of the target module so as to provide the target module with the required electric energy; the target module is any one of the main control module, the detection module and the prompt module.
Optionally, the power management chip is further connected to the main control module;
the main control module is also used for judging whether the wrist-worn equipment is charged on the wireless charging base according to the detection result of the detection module; if yes, controlling the power management chip to start the power supply of the prompt module; if not, controlling the power management chip to close the power supply of the prompt module.
In order to solve the technical problem, the invention further provides a wireless charging system, which comprises a wrist-worn device and any one of the wireless charging bases.
The invention provides a wireless charging base which comprises a prompting module, a detection module and a main control module. The detection module is used for detecting the position related information of the wrist-worn device placed on the wireless charging base; the main control module is used for judging whether the wrist-worn equipment is placed at a standard charging position of the wireless charging base or not according to the position related information; if not, the control prompting module carries out charging deviation prompting. It is thus clear that this application can detect whether the wrist wears the standard charge position of equipment skew wireless charging base to charge off normal suggestion when the wrist wears the equipment skew standard charge position, with the charge position that reminds the user to need to adjust wrist and wear equipment, thereby avoid wrist and wear equipment off normal that charges, improved wrist and wear the charge efficiency of equipment, shortened the charge time, reduced equipment calorific capacity, promoted user's use experience.
The invention also provides a wireless charging system which has the same beneficial effects as the wireless charging base.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wireless charging base according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an arrangement position of a magnet according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a setting position of a hall device according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a detection principle of a hall device according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a charging of a wrist-worn device according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a slight charging offset of a wrist-worn device according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a wrist-worn device with a severe charging deviation according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a prompt module according to an embodiment of the present invention;
fig. 9 is a schematic connection diagram of a power management chip according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a wireless charging base and a wireless charging system, which are used for prompting charging deviation when a wrist-worn device deviates from a standard charging position so as to remind a user of adjusting the charging position of the wrist-worn device, thereby avoiding the charging deviation of the wrist-worn device, improving the charging efficiency of the wrist-worn device, shortening the charging time, reducing the heat productivity of the device and improving the use experience of the user.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a wireless charging base according to an embodiment of the present invention.
This wireless charging base has the off normal and detects and remind the function, can cooperate the wrist equipment that formula wireless charging was inhaled to magnetism at present to use. This wireless charging base includes:
a prompt module 100;
the detection module 200 is used for detecting the position related information of the wrist-worn device placed on the wireless charging base;
the main control module 300 is configured to determine whether the wrist-worn device is placed at a standard charging position of the wireless charging base according to the position-related information; if not, the control prompt module 100 performs charging deviation prompt.
Specifically, because the volume of wrist-worn device (like intelligent wrist-watch) itself is less, so the inside charging coil that sets up of wrist-worn device is also less, leads to the wrist-worn device to remove just very slightly and influence the charge efficiency of wrist-worn device, and this makes the position of placing of wrist-worn device on wireless charging base require higher, so very necessary design has the off normal to detect and remind the wireless charging base of function.
This application has off normal to detect and remind wireless base that charges of function includes prompt module 100, detection module 200 and main control module 300 (accessible CPU (Central Processing Unit) realizes the main control function), and its theory of operation is:
after the wrist-worn device is placed on the wireless charging base, the detection module 200 may detect the position-related information of the wrist-worn device placed on the wireless charging base, and send the position-related information of the wrist-worn device to the main control module 300. After receiving the position-related information of the wrist-worn device, the main control module 300 may determine, according to the position-related information of the wrist-worn device, a placement position of the wrist-worn device on the wireless charging base to determine whether the wrist-worn device is placed on a standard charging position of the wireless charging base, and if the wrist-worn device is placed on the standard charging position of the wireless charging base, it indicates that the wrist-worn device is not biased for charging, the charging position of the wrist-worn device does not need to be adjusted, and at this time, the prompting module 100 may be controlled to perform charging non-bias prompting to inform the user that the wrist-worn device is not biased for charging, or the prompting module 100 may not be controlled to perform prompting operation; if the wrist-worn device is not placed at the standard charging position of the wireless charging base, the charging position of the wrist-worn device needs to be adjusted, the prompting module 100 is controlled to perform charging deviation prompting to remind a user of adjusting the charging position of the wrist-worn device, and therefore the charging deviation of the wrist-worn device is avoided.
It should be noted that, the standard charging position of the wireless charging base is the charging position with the highest charging efficiency of the wireless charging base, for example, when the wireless charging base and the wrist-worn device are horizontally placed, the situation that the charging coil in the wireless charging base and the charging coil in the wrist-worn device are completely overlapped in the vertical direction when the wrist-worn device is placed at the standard charging position of the wireless charging base is that the charging coil in the wireless charging base and the charging coil in the wrist-worn device are completely overlapped, and the charging efficiency of the wrist-worn device is the highest at this moment.
It is thus clear that this application can detect whether the wrist wears the standard charge position of equipment skew wireless charging base to charge off normal suggestion when the wrist wears the equipment skew standard charge position, with the charge position that reminds the user to need to adjust wrist and wear equipment, thereby avoid wrist and wear equipment off normal that charges, improved wrist and wear the charge efficiency of equipment, shortened the charge time, reduced equipment calorific capacity, promoted user's use experience.
On the basis of the above-described embodiment:
as an alternative embodiment, a magnet M is provided in the wrist-worn device;
the detection module 200 includes:
the magnetic field detection circuit is used for detecting the magnetic field condition of the position of the magnetic field detection circuit;
the main control module 300 is specifically configured to determine the relative position information of the wireless charging base and the wrist-worn device according to the magnetic field condition, and determine whether the wrist-worn device is placed at the standard charging position according to the relative position information; if not, the control prompt module 100 performs charging deviation prompt.
Specifically, magnet M is equipped with in the wrist-worn device of this application, so the relative position information of wireless charging base and wrist-worn device can be confirmed to the magnetic field condition on the accessible detection wireless charging base. Based on this, detection module 200 in the wireless charging base includes magnetic field detection circuit, and its theory of operation is:
the magnetic field detection circuit is used for detecting the magnetic field condition of the position of the magnetic field detection circuit, and the magnetic field detection circuit is arranged in the wireless charging base, so that the magnetic field detection circuit can detect the magnetic field condition on the wireless charging base and send the detected magnetic field condition to the main control module 300. The main control module 300 can determine the relative position information of the wireless charging base and the wrist-worn device according to the magnetic field condition detected by the magnetic field detection circuit, and judge whether the wrist-worn device is placed at the standard charging position according to the relative position information of the wireless charging base and the wrist-worn device; if the wrist-worn device is not placed at the standard charging position of the wireless charging base, the prompt module 100 is controlled to prompt charging deviation.
As an alternative embodiment, the magnetic field detection circuit comprises:
the Hall devices are arranged in the wireless charging base; each Hall device is used for detecting the magnetic field polarity and the magnetic field size of the position where the Hall device is located;
the main control module 300 is specifically configured to determine the relative position information between the wireless charging base and the wrist-worn device according to the magnetic field polarities and the magnetic field magnitudes detected by the plurality of hall devices.
Specifically, the magnetic field detection circuit of the present application includes a plurality of hall devices, and its operating principle is:
each hall device is used for detecting the magnetic field polarity (N pole or S pole) at the position of the hall device, and detecting the magnetic field size at the position of the hall device, and the hall device is arranged in the wireless charging base, so that the hall device can detect the magnetic field polarity and the magnetic field size on the wireless charging base, and send the detected magnetic field polarity and the magnetic field size to the main control module 300. The main control module 300 can determine the relative position information of the wireless charging base and the wrist-worn device according to the magnetic field polarities and the magnetic field sizes of the plurality of Hall devices, and judge whether the wrist-worn device is placed at a standard charging position according to the relative position information of the wireless charging base and the wrist-worn device; if the wrist-worn device is not placed at the standard charging position of the wireless charging base, the prompt module 100 is controlled to prompt charging deviation.
Referring to fig. 2 and fig. 3, fig. 2 is a schematic diagram illustrating a position of a magnet according to an embodiment of the present invention; fig. 3 is a schematic diagram of a setting position of a hall device according to an embodiment of the present invention.
As an alternative embodiment, magnet M is centrally located inside the first charging coil C1 of the wrist-worn device;
the plurality of hall devices includes:
a first hall device H1 located at a central position inside a second charging coil C2 of the wireless charging base;
a plurality of second hall devices H2 located at the periphery of the second charging coil C2; the distances between the second Hall devices H2 and the first Hall device H1 are the same, and the positions of the second Hall devices H2 are sequentially connected to form a regular polygon;
the main control module 300 is specifically configured to determine that the wrist-worn device is placed at the standard charging position if the polarities of the magnetic fields detected by the first hall device H1 and the second hall devices H2 are different, the magnetic field strength detected by the first hall device H1 is the largest, and the magnetic field strengths detected by the plurality of second hall devices H2 are the same; if the polarities of the magnetic fields detected by all the Hall devices are the same, the magnetic field intensity detected by the first Hall device H1 is the maximum, and the magnetic field intensities detected by the plurality of second Hall devices H2 are inconsistent, determining that the wrist-worn device is slightly deviated from the charging position; if the polarity of the magnetic field detected by one target Hall device is different from the polarities of the magnetic fields of the rest Hall devices in the second Hall device H2, the magnetic field strength detected by the target Hall device is the maximum, and the magnetic field strengths detected by the rest Hall devices are inconsistent, it is determined that the wrist-worn device is severely biased in charging.
Specifically, as shown in fig. 2, the magnet M in the wrist-worn device of the present application is located at the center inside the first charging coil C1 of the wrist-worn device, and it should be noted that the shape of the magnet M is not limited to a cylinder. Based on this, the plurality of hall devices include a first hall device H1 and a plurality of second hall devices H2, and the working principle thereof is as follows:
the first Hall device H1 is located at the center position inside the second charging coil C2 of the wireless charging base, the plurality of second Hall devices H2 are located at the periphery of the second charging coil C2, the distance between the plurality of second Hall devices H2 and the first Hall device H1 is the same, and the positions where the plurality of second Hall devices H2 are located are sequentially connected to form a regular polygon. As shown in fig. 3, there are 3 second hall devices H2 at the periphery of the second charging coil C2, 3 second hall devices H2 are located at 3 corners of an equilateral triangle outside the second charging coil C2, and the distances between the 3 second hall devices H2 and the first hall device H1 at the center of the second charging coil C2 are the same. It should be noted that, the number of the second hall devices H2 at the periphery of the second charging coil C2 is at least 3, or more, and the larger the number of the second hall devices H2 is, the higher the position detection accuracy of the wrist-worn device is, but the cost of the wireless charging base is increased, so that the position detection accuracy of the wrist-worn device and the cost of the wireless charging base need to be considered at the same time, so as to select the appropriate number of the second hall devices H2.
The first hall device H1 and the second hall device H2 are both configured to detect the magnetic field polarity and the magnetic field magnitude at the location of the first hall device H1 and the second hall device H2, and send the detected magnetic field polarity and the detected magnetic field magnitude to the main control module 300. The main control module 300 may determine the charging offset degree of the wrist-worn device according to the detection results of the first hall device H1 and the plurality of second hall devices H2, specifically: if the polarities of the magnetic fields detected by the first hall device H1 and the second hall devices H2 are different, the magnetic field intensity detected by the first hall device H1 is the largest, and the magnetic field intensities detected by the second hall devices H2 are consistent (an error is allowed, that is, when the difference value between the magnetic field intensities detected by the second hall devices H2 is smaller than a preset error threshold value, the magnetic field intensities detected by the second hall devices H2 are considered to be consistent), determining that the wrist-wearing equipment is placed at a standard charging position, that is, the wrist-wearing equipment is not biased in charging; if the polarities of the magnetic fields detected by all the Hall devices (the first Hall device H1 and the plurality of second Hall devices H2) are the same, and the magnetic field intensity detected by the first Hall device H1 is the maximum, and the magnetic field intensities detected by the plurality of second Hall devices H2 are inconsistent, determining that the wrist-worn device is slightly off-position in charging; if the magnetic field polarity detected by one target hall device in the second hall devices H2 is different from the magnetic field polarities of the other hall devices (the first hall device H1 and the second hall devices H2 except the target hall device), and the magnetic field strength detected by the target hall device is the maximum, and the magnetic field strengths detected by the other hall devices are inconsistent, it is determined that the wrist-worn device is severely biased in charging.
More specifically, each hall device of the present application includes two output pins, which are an N pin and an S pin, respectively, and when the hall device detects an N-pole magnetic field, the N-pin output of the hall device is converted from a low level to a high level (the S pin outputs a low level unchanged), and the stronger the detected N-pole magnetic field, the higher the level of the N-pin output; when the Hall device detects an S-pole magnetic field, the S pin output of the Hall device is converted from a low level to a high level (the N pin output is unchanged at the low level), and the stronger the detected S-pole magnetic field is, the higher the level of the S pin output is. Therefore, the polarity and the magnitude of the magnetic field detected by each Hall device can be determined through the level change and the level magnitude of the output pin N/S of each Hall device.
For example, as shown in fig. 4, the hall device 1 directly below the magnet M detects an N-pole magnetic field, the N-pin output of the hall device 1 is switched from a low level to a high level (the S-pin output is unchanged at a low level), and the stronger the detected N-pole magnetic field, the higher the N-pin output level; while the hall device 2 outside the projected area of the magnet M detects an S-pole magnetic field, and the S-pin output of the hall device 2 is switched from a low level to a high level (the N-pin output is unchanged at a low level), the level of the S-pin output of the hall device 2 is lower than the level of the N-pin output of the hall device 1 because the density of the magnetic field outside the projected area of the magnet M is lower than the density of the magnetic field in the area directly below the magnet M.
Based on this, as shown in fig. 5, when the charging coil of the wrist-worn device is overlapped with the charging coil of the wireless charging base, the magnet M of the wrist-worn device is overlapped with the hall device 1 of the wireless charging base, the hall device 1 detects an N-pole magnetic field, and compared with other hall devices, the magnetic field detected by the hall device 1 is strongest; the hall devices 2, 3 and 4 all detect the S-pole magnetic field, and the distance from the magnet M to the hall devices 2, 3 and 4 is basically consistent, so that the magnetic field strengths detected by the hall devices 2, 3 and 4 are basically consistent, the level output by the N pin of the hall device 1 is greater than the level output by the S pin of the hall device 2, i.e., the level output by the S pin of the hall device 3, i.e., the level output by the S pin of the hall device 4, and at this time, the main control module 300 determines that the charging of the wrist-worn device is not deviated according to the polarity and level conditions output by the 4 hall devices.
As shown in fig. 6, when the charging coil of the wrist-worn device slightly deviates from the charging coil of the wireless charging base, the magnet M of the wrist-worn device slightly deviates from the hall device 1 and is not overlapped with other hall devices, 4 hall devices all detect the S-pole magnetic field, the S-pole magnetic field detected by the hall device 1 is strongest, the S-pole magnetic field detected by the hall device 4 is weakest, the strengths of the S-pole magnetic fields detected by the hall devices 2 and 3 are basically consistent, and then the level output by the S pin sequentially from high to low: hall device 1 > Hall device 2 ═ Hall device 3 > Hall device 4, and main control module 300 judges wrist-worn device charging slight off normal according to the polarity and the level condition of 4 Hall device outputs this moment.
As shown in fig. 7, the charging coil of the wrist-worn device and the charging coil of the wireless charging base are severely offset, for example, the magnet M of the wrist-worn device coincides with the hall device 3 and is not coincident with other hall devices, at this time, the hall device 3 detects an N-pole magnetic field, and compared with other hall devices, the magnetic field detected by the hall device 3 is strongest; the hall devices 1, 2 and 4 all detect an S-pole magnetic field, because the magnet M is close to the hall device 1 and is basically consistent with the hall devices 2 and 4, the strength of the S-pole magnetic field detected by the hall device 1 is greater than the strength of the S-pole magnetic field detected by the hall devices 2 and 4, and the strengths of the S-pole magnetic fields detected by the hall devices 2 and 4 are basically consistent, then the level output by the N pin of the hall device 3 > the level output by the S pin of the hall device 1 > the level output by the S pin of the hall device 2 ═ the level output by the S pin of the hall device 4, at this time, the main control module 300 determines that the wrist-worn device is severely charged and is severely off-position according to the polarity and level conditions output by the 4 hall devices.
It should be noted that, as shown in fig. 4, the positions of the N pole and the S pole of the magnet may be interchanged, and the N pole and the S pole of the magnetic field detected by the 4 hall devices described in the above embodiments are also interchanged correspondingly, but the general determination principle is the same, and the present application is not described herein again.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a prompt module according to an embodiment of the present invention.
As an alternative embodiment, the prompt module 100 includes:
an indication module 101 connected with the main control module 300;
the main control module 300 is specifically configured to determine the charging offset degree of the wrist-worn device according to the detection result of the detection module 200, and control the indication module 101 to perform corresponding charging offset indication according to the charging offset degree.
Specifically, the prompting device of the present application includes an indication module 101, the indication module 101 is controlled by a main control module 300, and the control principle is as follows:
the main control module 300 determines the charging offset degree of the wrist-worn device according to the detection result of the detection module 200, and controls the indication module 101 to perform corresponding charging offset indication according to the charging offset degree of the wrist-worn device.
More specifically, the charging deviation degree of the wrist-worn device includes three degrees of charging non-deviation, charging slight deviation and charging serious deviation, and the main control module 300 is specifically configured to control the indication module 101 to indicate that charging is not deviated if detecting that the charging of the wrist-worn device is not deviated; if the charging slight deviation of the wrist-worn device is detected, controlling the indicating module 101 to indicate the charging slight deviation; if the charging serious deviation of the wrist-worn device is detected, the control instruction module 101 performs the charging serious deviation instruction.
For example, the indication module 101 includes three LED (light-emitting diode) indication lamps, namely a red light, a yellow light, and a green light, and the main control module 300 is specifically configured to control the green light to be on if it is detected that the wrist-worn device is not biased during charging; if the wrist-worn device is detected to be slightly off-position during charging, controlling a yellow lamp to be on; and if the wrist-worn device is detected to be severely deviated in charging, controlling the red light to be on.
As an alternative embodiment, the prompt module 100 further includes:
a vibration module 102 connected with the main control module 300;
the main control module 300 is further configured to control the vibration module 102 to vibrate at a corresponding frequency according to the charging deviation degree; the larger the charging deviation degree is, the higher the vibration frequency of the vibration module 102 is.
Further, the prompt module 100 of the present application further includes a vibration module 102 (e.g., a motor), the vibration module 102 is controlled by the main control module 300, and the control principle is as follows:
the main control module 300 determines the charging deviation degree of the wrist-worn device according to the detection result of the detection module 200, and controls the vibration module 102 to vibrate at a corresponding frequency according to the charging deviation degree of the wrist-worn device. It should be noted that the greater the charging offset degree of the wrist-worn device, the higher the vibration frequency of the vibration module 102, that is, the more serious the charging offset of the wrist-worn device is, the stronger the vibration of the vibration module 102 is.
More specifically, the charging deviation degree of the wrist-worn device includes three degrees of charging non-deviation, charging slight deviation and charging serious deviation, and the main control module 300 is specifically configured to not control the vibration module 102 to vibrate if the charging non-deviation of the wrist-worn device is detected; if the wrist-worn device is detected to be slightly deviated from the charging position, controlling the vibration module 102 to vibrate at a preset first vibration frequency; if the wrist-worn device is detected to be severely deviated in charging, controlling the vibration module 102 to vibrate at a preset second vibration frequency; wherein the second vibration frequency is greater than the first vibration frequency.
Referring to fig. 9, fig. 9 is a schematic connection diagram of a power management chip according to an embodiment of the present invention.
As an alternative embodiment, the wireless charging base further comprises:
the power management chip 400 who is connected with DC power supply and wireless charging base's second charging coil C2 respectively for carry out wireless communication through second charging coil C2 and wrist-worn device, in order to obtain wrist-worn device's the demand current that charges, and carry out the contravariant operation according to the demand current that charges to DC power supply's output voltage, provide its required charging current for wrist-worn device.
Further, the wireless charging base of this application still includes power management chip 400, and power management chip 400 passes through USB (Universal Serial Bus) interface access 5V DC power supply for wrist-worn device provides the electric energy that charges. Specifically, the principle of the power management chip 400 for charging the wrist-worn device is as follows:
the power management chip 400 performs wireless communication with the wrist-worn device through the second charging coil C2, specifically, when the wrist-worn device is placed on the wireless charging base, the power management chip 400 may send a first analog signal of a high-low level combination through the second charging coil C2 (ask for how much charging current the wrist-worn device requires); the main control chip in the wrist-worn device can detect a first analog signal through the first charging coil C1 and send a second analog signal of a high-low level combination through the first charging coil C1 (what the charging demand current of the wrist-worn device is returned to); the power management chip 400 may detect the second analog signal through the second charging coil C2 to obtain a charging demand current of the wrist-worn device, and perform an inversion operation on the output voltage of the dc power supply according to the charging demand current of the wrist-worn device to provide the required charging current for the wrist-worn device.
As an alternative embodiment, the power management chip 400 is further connected to the main control module 300, the detection module 200, and the prompt module 100, respectively;
the power management chip 400 is further configured to perform voltage regulation operation on the output voltage of the dc power supply according to the power supply demand voltage of the target module, so as to provide the target module with the required electric energy; the target module is any one of the main control module 300, the detection module 200 and the prompt module 100.
Further, the power management chip 400 of the present application is further connected to the main control module 300, the detection module 200, and the prompt module 100 respectively, so as to supply power to the main control module 300, the detection module 200, and the prompt module 100 (the indication module 101+ the vibration module 102). Specifically, the principle of the power management chip 400 supplying power to three modules is as follows:
the dc power supply supplies 5V, and the power supply demand voltage of the main control module 300, the vibration module 102 (motor), and the detection module 200 (hall device) is less than 5V (e.g., 3.3V, 1.8V), and the power supply demand voltage of the indication module 101(LED indicator) is greater than 5V (e.g., 5.3V). Based on this, the power management chip 400 includes a voltage boost circuit and a voltage reduction circuit, where the voltage boost circuit performs a voltage boost operation on the output voltage of the dc power supply according to the power supply requirement voltage of the indication module 101 to provide the indication module 101 with the required electric energy; the voltage reduction circuit performs voltage reduction operation on the output voltage of the dc power supply according to the power supply demand voltages of the main control module 300, the vibration module 102, and the detection module 200, respectively, so as to provide the main control module 300, the vibration module 102, and the detection module 200 with the required electric energy.
As an alternative embodiment, the power management chip 400 is further connected to the main control module 300;
the main control module 300 is further configured to determine whether the wrist-worn device is charged on the wireless charging base according to the detection result of the detection module 200; if yes, controlling the power management chip 400 to start the power supply of the prompt module 100; if not, the power management chip 400 is controlled to turn off the power supply of the prompt module 100.
Further, the power management chip 400 is further connected to the main control module 300 through an Inter-Integrated Circuit (IIC) bus, and the main control module 300 can determine whether the wrist-worn device is charged on the wireless charging base according to the detection result of the detection module 200; if the wrist-worn device is charged, the power management chip 400 is controlled to start the power supply of the prompt module 100; if no wrist-worn device is charged, the power management chip 400 is controlled to turn off the power supply of the prompting module 100, so as to save electric energy. In addition, the main control module 300 may also time from 0 when the wrist-worn device is placed at the standard charging position of the wireless charging base to start charging when the wrist-worn device is charged on the wireless charging base, and control the power management chip 400 to turn off the power supply of the prompting module 100 when the time exceeds the preset time threshold, so as to further save electric energy.
The application also provides a wireless charging system, which comprises the wrist-worn device and any one of the wireless charging bases.
For introduction of the wireless charging system provided in the present application, please refer to the above-mentioned embodiment of the wireless charging base, which is not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A wireless charging base, comprising:
a prompt module;
the detection module is used for detecting the position related information of the wrist-worn equipment placed on the wireless charging base;
the main control module is used for judging whether the wrist-worn equipment is placed at a standard charging position of the wireless charging base or not according to the position related information; if not, the prompting module is controlled to prompt charging deviation.
2. The wireless charging base of claim 1, wherein a magnet is disposed within the wrist-worn device;
the detection module comprises:
the magnetic field detection circuit is used for detecting the magnetic field condition of the position of the magnetic field detection circuit;
the main control module is specifically configured to determine, according to the magnetic field condition, relative position information between the wireless charging base and the wrist-worn device, and determine, according to the relative position information, whether the wrist-worn device is placed at the standard charging position; if not, the prompting module is controlled to prompt charging deviation.
3. The wireless charging base of claim 2, wherein the magnetic field detection circuit comprises:
the Hall devices are arranged in the wireless charging base; each Hall device is used for detecting the magnetic field polarity and the magnetic field size of the position of the Hall device;
the main control module is specifically configured to determine the relative position information between the wireless charging base and the wrist-worn device according to the magnetic field polarity and the magnetic field magnitude detected by the plurality of hall devices.
4. The wireless charging base of claim 3, wherein the magnet is centrally located within a first charging coil of the wrist-worn device;
the plurality of hall devices includes:
the first Hall device is positioned at the central position inside a second charging coil of the wireless charging base;
a plurality of second hall devices located at a periphery of the second charging coil; the distances between the second Hall devices and the first Hall device are the same, and the positions of the second Hall devices are sequentially connected to form a regular polygon;
the main control module is specifically configured to determine that the wrist-worn device is placed at the standard charging position if the polarities of the magnetic fields detected by the first hall device and the second hall devices are different, the magnetic field intensity detected by the first hall device is the largest, and the magnetic field intensities detected by the plurality of second hall devices are the same; if the polarities of the magnetic fields detected by all the Hall devices are the same, the magnetic field intensity detected by the first Hall device is the maximum, and the magnetic field intensities detected by the plurality of second Hall devices are inconsistent, determining that the wrist-worn device is slightly off-position during charging; and if the magnetic field polarity detected by one target Hall device is different from the magnetic field polarities of the rest Hall devices in the second Hall device, the magnetic field strength detected by the target Hall device is the maximum, and the magnetic field strengths detected by the rest Hall devices are inconsistent, determining that the wrist-worn device is severely off-position during charging.
5. The wireless charging base of claim 1, wherein the prompting module comprises:
the indicating module is connected with the main control module;
the main control module is specifically configured to determine a charging offset degree of the wrist-worn device according to a detection result of the detection module, and control the indication module to perform corresponding charging offset indication according to the charging offset degree.
6. The wireless charging base of claim 5, wherein the prompting module further comprises:
the vibration module is connected with the main control module;
the main control module is further configured to control the vibration module to vibrate at a corresponding frequency according to the charging deviation degree; the larger the charging deviation degree is, the higher the vibration frequency of the vibration module is.
7. The wireless charging base of any of claims 1-6, wherein the wireless charging base further comprises:
the power management chip is respectively connected with the direct current power supply and the second charging coil of the wireless charging base and used for carrying out wireless communication on the wrist-worn device through the second charging coil so as to obtain the charging demand current of the wrist-worn device, and carrying out inversion operation on the output voltage of the direct current power supply according to the charging demand current so as to provide the required charging current for the wrist-worn device.
8. The wireless charging base of claim 7, wherein the power management chip is further connected to the main control module, the detection module and the prompt module, respectively;
the power supply management chip is also used for carrying out voltage regulation operation on the output voltage of the direct current power supply according to the power supply demand voltage of the target module so as to provide the target module with the required electric energy; the target module is any one of the main control module, the detection module and the prompt module.
9. The wireless charging base of claim 8, wherein the power management chip is further connected to the main control module;
the main control module is also used for judging whether the wrist-worn equipment is charged on the wireless charging base according to the detection result of the detection module; if yes, controlling the power management chip to start the power supply of the prompt module; if not, controlling the power management chip to close the power supply of the prompt module.
10. A wireless charging system comprising a wrist-worn device and a wireless charging base according to any one of claims 1-9.
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| CN202111424637.XA CN114069893A (en) | 2021-11-26 | 2021-11-26 | Wireless charging base and system |
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| CN202111424637.XA CN114069893A (en) | 2021-11-26 | 2021-11-26 | Wireless charging base and system |
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