Remote charging type capacitance pen and charging method thereof

Abstract

The invention discloses a long-distance charging type capacitance pen and a charging method thereof, and relates to the technical field of capacitance pen equipment. A mainboard support is arranged in the capacitance pen shell, a control mainboard is arranged on the mainboard support, a charging inductive head is arranged at the tail end of the capacitance pen shell and electrically connected with the control mainboard, and a first charging receiving coil and a second charging receiving coil are arranged in the charging inductive head. A first charging receiving coil and a second charging receiving coil are arranged in the capacitance pen and are perpendicular to each other, a wired charging module and a remote wireless charging module are arranged in the capacitance pen, a charging inductive head is arranged at the tail end of the capacitance pen, and two induction coils which are perpendicular to each other are arranged in the charging inductive head. And charging can be carried out as long as the charging induction head is within the magnetic line range of the charging coil.

Description

Technical Field

[0001] The invention relates to a long-distance charging capacitive pen and a charging method thereof, and relates to the technical field of capacitive pen equipment. Background Art

[0002] When using some touch display devices, it is often necessary to use them with a capacitive stylus to obtain a better user experience, such as using a capacitive stylus to write on a tablet computer.

[0003] Most of the existing active capacitive pens have built-in charging structures, and the batteries are not easy to disassemble and replace. Therefore, it is necessary to pay attention to the amount of electricity used to prevent the pens from being unable to be used normally due to untimely charging. Most of the existing capacitive pens are charged with charging cables, or wireless charging structures are used to get rid of the constraints of charging cables and obtain a better charging experience. However, the existing wireless charging method is still limited by the charging distance. The capacitive pen cannot be charged when it leaves the wireless charger. Summary of the invention

[0004] The object of the present invention is to provide a long-distance charging capacitive pen and a charging method thereof in view of the defects or shortcomings in the prior art. A wired charging module and a long-distance wireless charging module are arranged in the capacitive pen, and a charging induction head is arranged at the end of the capacitive pen. Two induction coils arranged perpendicular to each other are arranged in the charging induction head. When the capacitive pen is placed on a charging base plate, any angle can be used as a receiving side for charging, and charging can be performed as long as the charging induction head is within the magnetic field line range of the charging coil.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: it includes a capacitive pen housing 1, a mainboard bracket 2 is arranged in the capacitive pen housing 1, a control mainboard 3 is arranged on the mainboard bracket 2, a charging induction head 5 is arranged at the end of the capacitive pen housing 1, the charging induction head 5 is electrically connected to the control mainboard 3, a first charging receiving coil 6 and a second charging receiving coil 7 are arranged in the charging induction head 5, and the first charging receiving coil 6 and the second charging receiving coil 7 are arranged perpendicular to each other.

[0006] Furthermore, the control main board 3 is provided with a main control chip and a charging control module, the main control chip is electrically connected to the charging control module, the charging control module includes a wired charging control module and a long-distance charging control module, the long-distance charging control module includes a charging receiving matching circuit and a charging switching circuit, the charging receiving matching circuit is based on the magnetic resonance wireless charging circuit design, and the charging receiving matching circuit is connected in series with the first charging receiving coil 6 and the second charging receiving coil 7.

[0007] Furthermore, the inner wall of the charging induction head 5 is provided with a first coil fixing wall 51 and a second coil fixing wall 52 , the first coil fixing wall 51 is vertically arranged to the second coil fixing wall 52 , and the first coil fixing wall 51 is arranged parallel to the capacitive stylus housing 1 .

[0008] Furthermore, the first charging receiving coil 6 and the second charging receiving coil 7 have the same structure, both of which are designed as 10-turn circular double-layer coils, and the first charging receiving coil 6 is arranged on the first coil fixing wall 51, and the second charging receiving coil 7 is arranged on the second coil fixing wall 52, and a counterweight block 14 is arranged in the first coil fixing wall 51.

[0009] Furthermore, a charging connection terminal 8 is provided at the front end of the charging induction head 5, and two electrode sheets are provided at the end of the charging terminal 8, which are respectively electrically connected to the first charging receiving coil 6 and the second charging receiving coil 7, and the two electrode sheets are electrically connected to the charging receiving matching circuit. A pressing terminal 9 is provided at the front end of the charging connection terminal 8, and the front end of the pressing terminal 9 is movably arranged at the end of the mainboard bracket 2.

[0010] Furthermore, a conductive head 10 and a fixed bracket 13 are provided at the end of the mainboard bracket 2, a return spring 11 is provided on the outside of the conductive head 19, the front end of the return spring 11 is fixed on the mainboard bracket 2, the conductive head 10 is connected to the end of the return spring 11, the front end of the conductive head 10 is electrically connected to the control mainboard 3, the fixed bracket 13 cooperates with the mainboard bracket 2 to fix the return spring 11, and a rechargeable lithium battery 4 is also provided at the front end of the mainboard bracket 2, and the rechargeable lithium battery 4 is electrically connected to the control mainboard 3.

[0011] Furthermore, a charging control switch 12 is provided at the end of the control main board 3 , and a spring button is provided at the end of the charging control switch 12 , and the spring button corresponds to the conductive head 10 .

[0012] Furthermore, the capacitive pen housing 1 is a cylindrical structure, and is provided with an avoidance groove 101 on the same side as the counterweight block 14 , and a power switch 15 and a charging port 16 are provided in the avoidance groove 101 , and both the power switch 15 and the charging port 16 are electrically connected to the control mainboard 3 .

[0013] The working principle of the present invention is as follows: when the capacitive pen is not in use, the charging induction head 5 can be pressed, so that the conductive head presses the charging control switch 12, triggering the remote charging control module. When the capacitive pen is placed on a matching charging base, the charging coil on the charging base generates multiple groups of circular charging magnetic fields, and at least one of the first charging receiving coil 6 and the second charging receiving coil 7 in the charging induction head 5 is in a parallel or nearly parallel state with the charging coil on the charging base, so that the first charging receiving coil 6 and the second charging receiving coil 7 are matched with the charging coil through the charging receiving matching circuit to supply power to the charging switching circuit. The current is rectified by the charging switching circuit and then output to the rechargeable lithium battery 4 for charging. This is the charging principle when the capacitive pen is not in use and is placed on the charging base plate. During the use of the capacitive pen, when the charging induction head 5 is close to the charging base plate, the charging control switch 12 is kept in the on state, and the charging receiving matching circuit will continue to detect whether the first charging receiving coil 6 and the second charging receiving coil 7 are electromagnetically inducing with the charging coil on the charging base plate. The closer the approach angle between the charging receiving coil and the charging coil is to 0 degrees and the smaller the coil distance is, the higher the charging efficiency is, thereby enabling long-distance charging of the capacitive pen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 yes Figure 1 A second angle view of

[0017] Figure 3 yes Figure 1 Schematic diagram of the internal structure;

[0018] Figure 4 yes Figure 3 Schematic diagram of the disassembly state of some structures;

[0019] Figure 5 yes Figure 4 The cross-sectional view at AA in the middle;

[0020] Figure 6 It is a schematic diagram of the internal structure of the charging induction head 5 of the present invention;

[0021] Figure 7 It is a schematic diagram of the charging induction principle of the present invention.

[0022] Explanation of the accompanying drawings: capacitive pen housing 1, mainboard bracket 2, control mainboard 3, rechargeable lithium battery 4, charging induction head 5, first charging receiving coil 6, second charging receiving coil 7, charging terminal 8, pressing terminal 9, conductive head 10, return spring 11, charging control switch 12, fixed bracket 13, counterweight 14, power switch 15, charging port 16, first coil fixing wall 51, second coil fixing wall 52, avoidance groove 101. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 7 As shown, the technical solution adopted in this specific embodiment is: a long-distance charging capacitive pen, which includes a capacitive pen housing 1, a mainboard bracket 2 is arranged in the capacitive pen housing 1, a control mainboard 3 is arranged on the mainboard bracket 2, a charging induction head 5 is arranged at the end of the capacitive pen housing 1, and the charging induction head 5 is electrically connected to the control mainboard 3. A first charging receiving coil 6 and a second charging receiving coil 7 are arranged in the charging induction head 5, and the first charging receiving coil 6 and the second charging receiving coil 7 are arranged perpendicular to each other. In this embodiment, a charging induction head is arranged to realize long-distance wireless charging, and two groups of charging receiving coils are arranged in the charging induction head. The charging device used in conjunction with the capacitive pen of this embodiment is a charging device with multiple groups of charging cables. The charging base plate has a circle. During the normal use of the capacitive pen, as long as the induction lines of the two sets of coils are within the induction line range of the charging coil, long-distance charging can be performed. According to the characteristics of wireless charging, the charging current is maximum when the angle between the charging receiving coil and the charging coil is close to 0 degrees, and when the charging induction head is placed on the charging base plate, full-power charging is achieved when the distance between the charging receiving coil and the charging coil is shortest. During use, when the charging receiving coil is within the induction range of multiple charging coils, a superimposed induction charging effect can be obtained to improve the charging speed. Since two sets of vertical charging receiving coils are set, no matter how the capacitive pen is placed, at least one set of charging receiving coils has the smallest angle with the charging coil, thereby effectively ensuring the charging effect.

[0024] More specifically, the control mainboard 3 is provided with a main control chip and a charging control module, the main control chip is electrically connected to the charging control module, the charging control module includes a wired charging control module and a long-distance charging control module, the long-distance charging control module includes a charging receiving matching circuit and a charging switching circuit, the charging receiving matching circuit is based on the magnetic resonance wireless charging circuit design, and the charging receiving matching circuit is connected in series with the first charging receiving coil 6 and the second charging receiving coil 7. In this embodiment, not only a long-distance wireless charging mode is set, but also a wired charging mode is set. In the case where it is inconvenient to use the charging base plate, the capacitive pen can be directly charged with a charger;

[0025] The charging receiving matching circuit in the long-distance charging control module can perform inductive matching on the transmission signal of the charging coil. The circuit is designed based on the magnetic resonance wireless charging circuit. Two sets of charging receiving coils are connected in series through the circuit. After matching the charging induction conditions, the charging switching circuit is powered and output to ensure stable current output.

[0026] To be more specific, the inner wall of the charging induction head 5 is provided with a first coil fixing wall 51 and a second coil fixing wall 52. The first coil fixing wall 51 is vertically arranged to the second coil fixing wall 52, and the first coil fixing wall 51 is arranged parallel to the capacitive pen housing 1. In this embodiment, the charging induction head adopts a split structure, which is convenient for assembly. Four groups of coil fixing walls are actually arranged on the inner wall. The coil fixing wall is used to fix the charging receiving coil, and can be optionally fixed by gluing.

[0027] More specifically, the first charging receiving coil 6 and the second charging receiving coil 7 have the same structure, both of which are designed as 10-turn circular double-layer coils, and the first charging receiving coil 6 is arranged on the first coil fixing wall 51, and the second charging receiving coil 7 is arranged on the second coil fixing wall 52. In this embodiment, the charging receiving coil adopts a circular double-layer coil design, which has a higher charging efficiency when inductively charging with the charging coil;

[0028] A counterweight 14 is arranged in the first coil fixing wall 51. In the present embodiment, a counterweight is arranged in the first coil fixing wall so that when the capacitive pen is placed, the first charging receiving coil can be placed as downward as possible under the action of gravity to ensure the best charging efficiency and prevent the capacitive pen from rolling randomly to a certain extent when it is placed.

[0029] More specifically, the front end of the charging induction head 5 is provided with a charging connection terminal 8, and the end of the charging terminal 8 is provided with two electrode sheets electrically connected to the first charging receiving coil 6 and the second charging receiving coil 7 respectively, and the two electrode sheets are electrically connected to the charging receiving matching circuit. In this embodiment, in order to make the charging receiving matching circuit match the charging first and then uniformly supply power, the charging terminal part isolates the two groups of charging receiving coils, and they are only connected in series in the circuit part;

[0030] A pressing terminal 9 is provided at the front end of the charging connection terminal 8, and the front end of the pressing terminal 9 is movably arranged at the end of the mainboard bracket 2, and the charging connection terminal is arranged in the pressing terminal. In this embodiment, in order to save electric energy, charging is not performed when it is not necessary, and a pressing charging device is provided, which is realized by pressing the charging induction head to drive the pressing terminal.

[0031] More specifically, a conductive head 10 and a fixed bracket 13 are provided at the end of the mainboard bracket 2, a return spring 11 is provided on the outside of the conductive head 19, the front end of the return spring 11 is fixed to the mainboard bracket 2, the conductive head 10 is connected to the end of the return spring 11, the front end of the conductive head 10 is electrically connected to the control mainboard 3, the fixed bracket 13 cooperates with the mainboard bracket 2 to fix the return spring 11, the front end of the mainboard bracket 2 is also provided with a rechargeable lithium battery 4, the rechargeable lithium battery 4 is electrically connected to the control mainboard 3, and the end of the control mainboard 3 is provided with a charging control switch 12, the charging control There is a spring button at the end of the control switch 12, which corresponds to the conductive head 10. The end of the conductive head is against the charging connection end and is electrically connected. When the charging induction head is pressed, the pressing end compresses the reset spring, driving the conductive head forward, thereby pressing the charging control switch to turn on. After the charging induction head is released, the reset spring drives it to reset, and the conductive head leaves the charging control switch. At this time, the circuit in the capacitive pen is in the on state and can be charged normally. When charging is not needed, the charging induction head is pressed again to turn off the charging control switch, then the circuit is in the open circuit state and charging cannot be performed, thereby achieving energy saving.

[0032] To be more specific, the capacitive pen housing 1 is a cylindrical structure, and is provided with an avoidance groove 101 on the same side as the counterweight 14, and a power switch 15 and a charging port 16 are provided in the avoidance groove 101, and the power switch 15 and the charging port 16 are both electrically connected to the control motherboard 3. In this embodiment, the capacitive pen housing is set to a cylindrical structure, the charging induction head is an ellipsoidal structure, and a counterweight structure is provided. When placing the capacitive pen, only a certain force needs to be applied, and the capacitive pen rolls, so that the first charging receiving coil can be kept downward to a certain extent under the action of the counterweight, thereby ensuring the charging effect and preventing the capacitive pen from rolling at will.

[0033] A charging method for a long-distance charging capacitive stylus pen comprises the following steps:

[0034] Step 1, press the charging induction head 5 to turn on the charging circuit;

[0035] Step 2, turn on the charging function of the charging base and place the capacitive pen on the charging base;

[0036] Step 3, the first charging receiving coil 6, the second charging receiving coil 7 and the charging coil are matched and charged according to the magnetic resonance wireless charging principle through the charging receiving matching circuit and the transmitting coil transmitting matching circuit;

[0037] Step 4, the charging receiving matching circuit rectifies the input current and outputs it to the charging switching circuit;

[0038] Step 5, the charging switching circuit converts the input current so that it can match the load;

[0039] Step 6: The charging switching circuit outputs the converted current to the rechargeable lithium battery to achieve long-distance wireless charging.

[0040] After adopting the above technical scheme, the beneficial effects of the present invention are as follows: a wired charging module and a long-distance wireless charging module are arranged in the capacitive pen, and a charging induction head is arranged at the end of the capacitive pen, and two induction coils arranged perpendicular to each other are arranged in the charging induction head. When the capacitive pen is placed on the charging base plate, any angle can be used as a receiving device for charging, and charging can be performed as long as the charging induction head is within the magnetic field line range of the charging coil.

[0041] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A long-distance charging capacitive stylus pen, comprising a capacitive stylus pen housing (1), characterized in that: The capacitive pen housing (1) is provided with a mainboard bracket (2), a control mainboard (3) is provided on the mainboard bracket (2), a charging induction head (5) is provided at the end of the capacitive pen housing (1), the charging induction head (5) is electrically connected to the control mainboard (3), a first charging receiving coil (6) and a second charging receiving coil (7) are provided in the charging induction head (5), and the first charging receiving coil (6) and the second charging receiving coil (7) are arranged perpendicular to each other.

2. The long-distance rechargeable capacitive stylus pen according to claim 1, characterized in that: The control mainboard (3) is provided with a main control chip and a charging control module. The main control chip is electrically connected to the charging control module. The charging control module includes a wired charging control module and a long-distance charging control module. The long-distance charging control module includes a charging receiving matching circuit and a charging switching circuit. The charging receiving matching circuit is designed based on a magnetic resonance wireless charging circuit, and the charging receiving matching circuit is connected in series with a first charging receiving coil (6) and a second charging receiving coil (7).

3. The long-distance rechargeable capacitive stylus pen according to claim 1, characterized in that: The inner wall of the charging induction head (5) is provided with a first coil fixing wall (51) and a second coil fixing wall (52); the first coil fixing wall (51) and the second coil fixing wall (52) are arranged vertically, and the first coil fixing wall (51) is arranged parallel to the capacitive pen housing (1).

4. The long-distance rechargeable capacitive stylus pen according to claim 1, characterized in that: The first charging receiving coil (6) and the second charging receiving coil (7) have the same structure, both of which are (10) turns of circular double-layer coil design, and the first charging receiving coil (6) is arranged on the first coil fixing wall (51), and the second charging receiving coil (7) is arranged on the second coil fixing wall (52), and a counterweight block (14) is arranged in the first coil fixing wall (51).

5. The long-distance rechargeable capacitive stylus pen according to claim 1, characterized in that: The front end of the charging induction head (5) is provided with a charging connection terminal (8), and the end of the charging terminal (8) is provided with two electrode sheets which are electrically connected to the first charging receiving coil (6) and the second charging receiving coil (7) respectively, and the two electrode sheets are electrically connected to the charging receiving matching circuit. The front end of the charging connection terminal (8) is provided with a pressing terminal (9), and the front end of the pressing terminal (9) is movably arranged at the end of the mainboard bracket (2).

6. The long-distance rechargeable capacitive stylus pen according to claim 1, characterized in that: The end of the mainboard bracket (2) is provided with a conductive head (10) and a fixed bracket (13); a reset spring (11) is provided on the outside of the conductive head (19); the front end of the reset spring (11) is fixed to the mainboard bracket (2); the conductive head (10) is connected to the end of the reset spring (11); the front end of the conductive head (10) is electrically connected to the control mainboard (3); the fixed bracket (13) cooperates with the mainboard bracket (2) to fix the reset spring (11); a rechargeable lithium battery (4) is also provided at the front end of the mainboard bracket (2); and the rechargeable lithium battery (4) is electrically connected to the control mainboard (3).

7. The long-distance rechargeable capacitive stylus pen according to claim 1, characterized in that: A charging control switch (12) is arranged at the end of the control main board (3), and a spring button is arranged at the end of the charging control switch (12), and the spring button corresponds to the conductive head (10).

8. The long-distance rechargeable capacitive stylus pen according to claim 1, characterized in that: The capacitive pen housing (1) is a cylindrical structure, and is provided with an escape groove (101) on the same side as the counterweight block (14). A power switch (15) and a charging port (16) are provided in the escape groove (101), and both the power switch (15) and the charging port (16) are electrically connected to the control mainboard (3).

9. A method for charging a long-distance charging capacitive pen, characterized in that: It includes the following steps: Step 1, pressing the charging induction head (5) to turn on the charging circuit; Step 2, turn on the charging function of the charging base and place the capacitive pen on the charging base; Step 3, the first charging receiving coil (6), the second charging receiving coil (7) and the charging coil are matched and charged according to the magnetic resonance wireless charging principle through the charging receiving matching circuit and the transmitting coil transmitting matching circuit; Step 4, the charging receiving matching circuit rectifies the input current and outputs it to the charging switching circuit; Step 5, the charging switching circuit converts the input current so that it can match the load; Step 6: The charging switching circuit outputs the converted current to the rechargeable lithium battery to achieve long-distance wireless charging.

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