A remote charging capacitive pen and a charging method thereof

Abstract

The application relates to a long-distance charging capacitive pen and a charging method thereof, and relates to the technical field of capacitive pen equipment. A mainboard support is arranged in the capacitive pen shell, a control mainboard is arranged on the mainboard support, a charging induction head is arranged at the tail end of the capacitive pen shell, the charging induction head is electrically connected with the control mainboard, a first charging receiving coil and a second charging receiving coil are arranged in the charging induction head, the first charging receiving coil and the second charging receiving coil are arranged perpendicularly to each other, a wired charging module and a long-distance wireless charging module are arranged in the capacitive pen, a charging induction head is arranged at the tail end of the capacitive pen, two induction coils arranged perpendicularly to each other are arranged in the charging induction head, when the capacitive pen is placed on a charging bottom plate, any angle can be used for receiving and charging, and as long as the charging induction head is in the magnetic line range of the charging coil, the capacitive pen can be charged.

Description

TECHNICAL FIELD

[0001] The application relates to a long-distance charging capacitive pen and a charging method thereof. BACKGROUND

[0002] In use of some touch display devices, the capacitive pen is often used in cooperation so that better use experience can be obtained, for example, the capacitive pen is used for writing on a tablet computer.

[0003] The existing active capacitive pen is mostly of built-in charging structure, and the battery is inconvenient to disassemble and replace, so that the use of electricity needs to be paid attention to, and the capacitive pen cannot be normally used due to failure to charge in time. The capacitive pen is mostly charged by using a charging wire or using a wireless charging structure, so that the charging wire can be broken free and better charging experience can be obtained. However, the existing wireless charging mode is still limited by the charging distance, and the capacitive pen cannot be charged when it is away from the wireless charger. SUMMARY

[0004] The application aims at the defects or deficiencies in the prior art, and provides a long-distance charging capacitive pen and a charging method thereof. The wired charging module and the long-distance wireless charging module are arranged in the capacitive pen, and the charging induction head is arranged at the end of the capacitive pen. The two induction coils arranged perpendicular to each other are arranged in the charging induction head. When the capacitive pen is placed on the charging bottom plate, any angle can be used for receiving and charging. As long as the charging induction head is in the magnetic line range of the charging coil, the charging can be performed.

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

[0006] Further, the control mainboard 3 is provided with a main control chip and a charging control module, the main control chip is electrically connected with the charging control module, the charging control module comprises a wired charging control module and a long-distance charging control module, the long-distance charging control module comprises 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 the first charging receiving coil 6 and the second charging receiving coil 7.

[0007] Further, 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 with the second coil fixing wall 52, and the first coil fixing wall 51 is parallel to the capacitor pen shell 1.

[0008] Further, the first charging receiving coil 6 and the second charging receiving coil 7 are the same structure, both are 10-turn 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 the first coil fixing wall 51 is provided with a counterweight 14.

[0009] Further, the front end of the charging induction head 5 is provided with a charging connection end 8, and the end of the charging end 8 is provided with two electrode sheets which are electrically connected with the first charging receiving coil 6 and the second charging receiving coil 7 respectively, and the two electrode sheets are electrically connected with the charging receiving matching circuit, and the front end of the charging connection end 8 is provided with a pressing end 9, and the front end of the pressing end 9 is movably arranged at the end of the main board support 2.

[0010] Further, the end of the main board support 2 is provided with a conductive head 10 and a fixed support 13, the outer side of the conductive head 19 is provided with a reset spring 11, the front end of the reset spring 11 is fixed on the main board support 2, the conductive head 10 is connected with the end of the reset spring 11, the front end of the conductive head 10 is electrically connected with the control main board 3, the fixed support 13 fixes the reset spring 11 in cooperation with the main board support 2, and the front end of the main board support 2 is also provided with a charging lithium battery 4, and the charging lithium battery 4 is electrically connected with the control main board 3.

[0011] Further, the end of the control main board 3 is provided with a charging control switch 12, and the end of the charging control switch 12 has a spring button corresponding to the conductive head 10.

[0012] Further, the capacitor pen shell 1 is a cylindrical structure, and a avoiding groove 101 is arranged on the same side as the counterweight 14, and a power-on switch 15 and a charging port 16 are arranged in the avoiding groove 101, and the power-on switch 15 and the charging port 16 are electrically connected with the control main board 3.

[0013] The working principle of the application is: when the capacitive pen is not used, the charging induction head 5 can be pressed to make the conductive head press the charging control switch 12, trigger the long-distance charging control module, when the capacitive pen is placed on the matched charging base plate, the charging coil on the charging base plate generates a plurality of annular 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 parallel or close to parallel with the charging coil on the charging base plate, so that the charging receiving matching circuit matches the first charging receiving coil 6, the second charging receiving coil 7 and the charging coil to supply power to the charging switching circuit, and after rectification by the charging switching circuit, the output is charged to the charging lithium battery 4, which is the charging principle when the capacitive pen is not used and 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, the charging receiving matching circuit continuously detects whether the first charging receiving coil 6 and the second charging receiving coil 7 are electromagnetically induced with the charging coil on the charging base plate. The closer the angle between the charging receiving coil and the charging coil approaches 0 degrees, the smaller the coil distance, and the higher the charging efficiency, so that the capacitive pen can be charged remotely. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Figure 1 is a structural schematic diagram of the present application;

[0016] Figure 2 is a second angle view of Figure 1 ;

[0017] Figure 3 is an internal structure schematic diagram of Figure 1 ;

[0018] Figure 4 is a split state schematic diagram of part of the structure; Figure 3

[0019] Figure 5 is a sectional view at A-A in Figure 4 ;

[0020] Figure 6 is an internal structure schematic diagram of the charging induction head 5 in the present application;

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

[0022] Explanation of reference signs: capacitor pen shell 1, main board support 2, control main board 3, charging lithium battery 4, charging induction head 5, first charging receiving coil 6, second charging receiving coil 7, charging end 8, pressing end 9, conductive head 10, reset spring 11, charging control switch 12, fixed support 13, counterweight 14, power-on switch 15, charging port 16, first coil fixing wall 51, second coil fixing wall 52, avoiding groove 101. DETAILED DESCRIPTION

[0023] Reference Figures 1-7 The technical scheme adopted in the specific embodiment is shown in the figure: a long-distance charging capacitor pen, which comprises a capacitor pen shell 1, a main board support 2 arranged in the capacitor pen shell 1, a control main board 3 arranged on the main board support 2, a charging induction head 5 arranged at the end of the capacitor pen shell 1, and the charging induction head 5 is electrically connected with the control main board 3. The charging induction head 5 is provided with a first charging receiving coil 6 and a second charging receiving coil 7, 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 equipment matched with the capacitor pen in this embodiment is a charging bottom plate with multiple groups of charging coils. During normal use of the capacitor pen, as long as the induction lines of the two groups of coils are within the induction line range of the charging coils, long-distance charging can be performed. According to the characteristics of wireless charging, when the included angle between the charging receiving coil and the charging coil tends to be 0 degrees, the charging current is maximum. When the charging induction head is placed on the charging bottom plate, the distance between the charging receiving coil and the charging coil is the shortest, which is full-power charging. When the charging receiving coil is within the induction range of multiple charging coils during use, the superimposed induction charging effect can be obtained, and the charging speed is improved. Since two groups of perpendicular charging receiving coils are arranged, no matter how the capacitor pen is placed, at least one group of charging receiving coils has the smallest included angle with the charging coil, so that the charging effect can be effectively ensured.

[0024] More specifically, the control main board 3 is provided with a main control chip and a charging control module, the main control chip is electrically connected with the charging control module, the charging control module comprises a wired charging control module and a long-distance charging control module, the long-distance charging control module comprises 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 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 arranged, but also a wired charging mode is arranged. In the case where it is not convenient to use the charging bottom plate, the capacitor pen can be directly charged and used by using a charger.

[0025] The transmitting signal of the charging coil can be inductively matched by a charging receiving matching circuit in the remote charging control module, the circuit is based on the magnetic resonance wireless charging circuit design, two groups of charging receiving coils are connected in series through the circuit, and the charging switching circuit is powered and output after the charging inductive condition is matched, so that stable current output is ensured.

[0026] More specifically, the first coil fixing wall 51 and the second coil fixing wall 52 are arranged perpendicularly, and the first coil fixing wall 51 is arranged parallel to the capacitor pen shell 1. In this embodiment, the charging induction head adopts a split structure for easy assembly. Four groups of coil fixing walls are arranged on the inner wall, which are used for fixing the charging receiving coils and can be fixed by glue.

[0027] More specifically, the first charging receiving coil 6 and the second charging receiving coil 7 have the same structure and are both 10-turn circular double-layer coils. 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 10-turn circular double-layer coil design, which has higher charging efficiency when inductively charged with the charging coil.

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

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

[0030] The charging connection end 8 is provided with a pressing end 9 at the front end, and the pressing end 9 is movably arranged at the end of the mainboard support 2. The charging connection end is arranged in the pressing end. In this embodiment, in order to save power and not charge when unnecessary, a pressing charging device is arranged, which is realized by pressing the charging induction head to drive the pressing end.

[0031] More specifically, the end of the mainboard support 2 is provided with a conductive head 10 and a fixing support 13, the outer side of the conductive head 19 is provided with a reset spring 11, the front end of the reset spring 11 is fixed on the mainboard support 2, the conductive head 10 is connected with the end of the reset spring 11, the front end of the conductive head 10 is electrically connected with the control mainboard 3, the fixing support 13 cooperates with the mainboard support 2 to fix the reset spring 11, the front end of the mainboard support 2 is also provided with a charging lithium battery 4, the charging lithium battery 4 is electrically connected with the control mainboard 3, the end of the control mainboard 3 is provided with a charging control switch 12, the end of the charging control switch 12 is provided with a spring button, the spring button corresponds to the conductive head 10, the end of the conductive head abuts against the charging connection end and is electrically connected, when the charging induction head is pressed, the pressing end head presses the reset spring, and drives the conductive head to move forward, so as to abut against the charging control switch to turn on, after the charging induction head is released, the reset spring drives it to reset, the conductive head is away from the charging control switch, at this time, the circuit in the capacitor pen is in a conduction state, and normal charging can be performed, and when charging is not needed, the charging induction head is pressed again, the charging control switch is closed, the circuit is in a break state, and charging cannot be performed, so that energy saving is realized.

[0032] More specifically, the capacitor pen shell 1 is a cylindrical structure, and an avoiding groove 101 is arranged on the same side as the counterweight 14, a power-on switch 15 and a charging port 16 are arranged in the avoiding groove 101, the power-on switch 15 and the charging port 16 are electrically connected with the control mainboard 3, in the embodiment, the capacitor pen shell is arranged as a cylindrical structure, the charging induction head is an ellipsoidal structure, and the counterweight structure is arranged, when the capacitor pen is placed, only a certain force needs to be applied, the capacitor pen rolls, and under the action of the counterweight, the first charging receiving coil can be kept downward to a certain extent, the charging effect is ensured, and the capacitor pen can also be prevented from rolling randomly.

[0033] A charging method of a long-distance charging type capacitor pen comprises the following steps.

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

[0035] Step 2, open the charging function of the charging bottom plate, and place the capacitor pen on the charging bottom plate;

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

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

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

[0039] The step 6, the charging switching circuit outputs the converted current to the charging lithium battery to realize the long-distance wireless charging.

[0040] After the technical scheme is used, the application has the beneficial effects that the wired charging module and the long-distance wireless charging module are arranged in the capacitive pen, and the charging induction head is arranged at the end of the capacitive pen, two induction coils arranged perpendicularly to each other are arranged in the charging induction head, when the capacitive pen is placed on the charging bottom plate, any angle can be used as the receiving measurement to charge, and as long as the charging induction head is in the magnetic line range of the charging coil, the charging can be performed.

[0041] The above description is only used to explain the technical scheme of the application but not limit the application, and other modifications or equivalent replacements of the technical scheme of the application made by the person skilled in the art should be covered in the claim range of the application.

Claims

1. A long-range rechargeable capacitive pen, comprising a capacitive pen housing (1), characterized in that: The capacitive pen housing (1) is provided with a main board bracket (2), and a control main board (3) is provided on the main board bracket (2). A charging sensor head (5) is provided at the end of the capacitive pen housing (1). The charging sensor head (5) is electrically connected to the control main board (3). A first charging receiving coil (6) and a second charging receiving coil (7) are provided inside the charging sensor head (5). The first charging receiving coil (6) and the second charging receiving coil (7) are arranged perpendicular to each other. A charging connection end (8) is provided at the front end of the charging sensor head (5). Two electrode plates are provided at the end of the charging end (8) and are electrically connected to the first charging receiving coil (6) and the second charging receiving coil (7) respectively. The two electrode plates are electrically connected to the charging receiving matching circuit. A pressing end (9) is provided at the front end of the charging connection end (8), and the pressing end (9) is movably disposed at the end of the main board bracket (2).

2. The long-distance rechargeable capacitive pen according to claim 1, characterized in that: The control motherboard (3) is equipped with a main control chip and a charging control module. The main control chip and the charging control module are electrically connected. 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).

3. A long-distance rechargeable capacitive 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 perpendicularly, and the first coil fixing wall (51) is arranged parallel to the capacitive pen housing (1).

4. A long-distance rechargeable capacitive 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 being a (10)-turn circular double-layer coil design. The first charging receiving coil (6) is set on the first coil fixing wall (51), and the second charging receiving coil (7) is set on the second coil fixing wall (52). A counterweight (14) is provided inside the first coil fixing wall (51).

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

6. A long-distance rechargeable capacitive pen according to claim 1, characterized in that: The control motherboard (3) is provided with a charging control switch (12) at its end. The charging control switch (12) has a spring button at its end, which corresponds to the conductive head (10).

7. A long-distance rechargeable capacitive pen according to claim 1, characterized in that: The capacitive pen housing (1) is cylindrical and has a clearance groove (101) on the same side as the counterweight (14). A power switch (15) and a charging port (16) are provided in the clearance groove (101). Both the power switch (15) and the charging port (16) are electrically connected to the control motherboard (3).

8. A charging method for a long-distance rechargeable capacitive pen as described in claim 1, characterized in that: It includes the following steps: Step 1: Press the charging sensor head (5) to turn on the charging circuit; Step 2: Turn on the charging base and place the stylus 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 to match the load. Step 6: The charging switching circuit outputs the converted current to the charging lithium battery to achieve long-distance wireless charging.

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