Earphone charging device

Abstract

The utility model discloses an earphone charging device which comprises a shell, a wrist ball device, a power generation device, a rectifying circuit and an earphone charging box. The power generation device comprises a coil and a magnet; the wrist ball device is arranged in the shell, the coil and the magnet are arranged on the wrist ball device, the rectifying circuit is arranged in the earphone charging box, and the earphone charging box is arranged inside or outside the shell; wherein the power generation device is used for enabling one of the magnet and the coil to move when the wrist ball device is used, so that the magnet and the coil relatively move to generate alternating current; the rectifying circuit is used for converting alternating current generated by the power generation device into direct current, and the direct current is used for charging a battery of the earphone charging box. According to the earphone charging device provided by the invention, the charging convenience is improved, the sports fun is increased, and the overall endurance of the rechargeable earphone is prolonged.

Description

Technical Field

[0001] This application relates to headphone charging technology in the field of electronic technology, and more particularly to a headphone charging device. Background Technology

[0002] As people's quality of life improves, more and more people are paying attention to exercise. Enjoying music during exercise is also an important factor in enhancing the experience, thus giving rise to sports headphones. The market offers a wide variety of sports headphones suitable for different groups, but most designs focus on improving the appearance and comfort of the headphones, neglecting the functionality of the charging case and its suitability for various sports scenarios. Summary of the Invention

[0003] To address the related technical issues, this application provides an earphone charging device.

[0004] The technical solution of this application embodiment is implemented as follows:

[0005] This application provides an earphone charging device, which includes: a housing, a wrist ball device, a power generation device, a rectifier circuit, and an earphone charging case; the power generation device includes: a coil and a magnet; the wrist ball device is disposed within the housing, the coil and magnet are disposed on the wrist ball device, the rectifier circuit is disposed within the earphone charging case, and the earphone charging case is disposed inside or outside the housing; wherein...

[0006] The power generation device is used to generate alternating current when one of the magnet and the coil moves, such that the relative motion between the magnet and the coil generates alternating current, when the headphone charging device is used.

[0007] The rectifier circuit is used to convert the alternating current generated by the power generation device into direct current, which is used to charge the battery of the earphone charging case.

[0008] In some embodiments, the wrist ball device includes: a ball core;

[0009] The wrist ball device is used such that when the headphone charging device is used, the ball core rotates, and the ball core drives one of the magnet and the coil to move, so that the relative motion between the magnet and the coil generates alternating current.

[0010] In some embodiments, the wrist ball device further includes: a rotating shaft and a first fixing component;

[0011] The rotating shaft passes through the ball core, and the first fixing component is provided with two corresponding first holes. The two ends of the rotating shaft are respectively inserted into the two first holes, so that the rotating shaft can rotate within the first holes and drive the ball core to rotate. When the earphone charging device is used, the ball core drives the magnet to rotate, and the coil is set on the first fixing component; or, the ball core drives the coil to rotate, and the magnet is set on the first fixing component.

[0012] In some embodiments, the earphone charging case is disposed within the housing, the housing has a second fixing component, the earphone charging case is disposed on the second fixing component, and the housing includes an openable first portion, after the first portion is opened, the earphone can be removed from the earphone charging case or the earphone can be placed into the earphone charging case.

[0013] In some embodiments, the earphone charging case further includes a charging interface, which can be connected to an external power source to charge the battery of the earphone charging case after the first part is opened.

[0014] In some embodiments, the earphone charging case is disposed outside the housing, and the housing has a second hole through which a wire connecting the power generation device and the rectifier circuit passes.

[0015] In some embodiments, the earphone charging case further includes a charging interface, which can be connected to an external power source to charge the battery of the earphone charging case.

[0016] In some embodiments, the earphone charging case includes: a printed circuit board (PCB), a battery, and a charging circuit, wherein the charging circuit and a rectifier circuit are disposed on the PCB; wherein the charging circuit is used to charge the battery of the earphone charging case using the direct current output by the rectifier circuit.

[0017] In some embodiments, the device further includes: a voltage regulator circuit connected to a rectifier circuit and a charging circuit, the voltage regulator circuit being disposed on a PCB; wherein...

[0018] The voltage regulator circuit is used to regulate the voltage of the DC power output from the rectifier circuit and output the regulated DC power to the charging circuit.

[0019] In some embodiments, the device further includes: a boost circuit and a voltage regulator circuit, wherein the boost circuit is connected to the rectifier circuit and the voltage regulator circuit, the voltage regulator circuit is connected to the charging circuit, and the boost circuit and the voltage regulator circuit are disposed on a PCB; wherein...

[0020] The boost circuit is used to boost the voltage of the DC power output from the rectifier circuit.

[0021] The voltage regulator circuit is used to regulate the voltage of the boosted DC power and output the regulated DC power to the charging circuit.

[0022] The headphone charging device provided in this application includes: a housing, a wrist exercise ball, a power generation device, a rectifier circuit, and a headphone charging case. The power generation device includes a coil and a magnet. The wrist exercise ball is disposed within the housing, and the coil and magnet are disposed on the wrist exercise ball. The rectifier circuit is disposed within the headphone charging case, which is disposed inside or outside the housing. When the headphone charging device is used, the power generation device is used to generate alternating current (AC) by moving one of the magnet and the coil relative to each other. The rectifier circuit converts the AC power generated by the power generation device into direct current (DC), which is used to charge the battery of the headphone charging case. The headphone charging device provided in this application allows users to exercise their wrists while charging the headphone charging case battery, improving charging convenience, increasing the enjoyment of exercise, and extending the overall battery life of rechargeable headphones. Furthermore, in the absence of a power source, users can use this device to charge their headphones, providing an emergency charging solution. Simultaneously, the device utilizes energy generated by human movement for charging, aligning with environmental protection and energy conservation principles. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an earphone charging device provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of a wrist ball device provided in an embodiment of this application;

[0025] Figure 3 A schematic diagram of the structure of a shell provided in an embodiment of this application;

[0026] Figure 4 A schematic diagram of the circuit structure of a charging circuit provided in an embodiment of this application;

[0027] Figure 5 A schematic diagram of a circuit structure including a rectifier circuit, a boost circuit, and a voltage regulator circuit is provided for an embodiment of this application;

[0028] Figure 6 A schematic diagram of the circuit structure of a battery provided in an embodiment of this application;

[0029] Figure 7 A schematic diagram of the circuit structure of a charging interface provided in an embodiment of this application;

[0030] Figure 8 This is a schematic diagram illustrating the working process of an earphone charging device, provided as an application example of this application. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0032] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0033] As people's quality of life improves, more and more people are paying attention to exercise. Enjoying music during exercise is also an important factor in enhancing the experience, thus giving rise to sports headphones. The market offers a wide variety of sports headphones suitable for different groups, but most designs focus on improving the appearance and comfort of the headphones, neglecting the functionality of the charging case and its suitability for various sports scenarios.

[0034] Based on this, various embodiments of this application provide an earphone charging device that allows users to charge the earphone charging case battery while exercising their wrists. This not only improves charging convenience but also enhances the enjoyment of exercise and increases the overall battery life of the rechargeable earphones. Furthermore, in the absence of an external power source, users can use this device to charge the earphones, providing an emergency charging solution. Simultaneously, the device utilizes energy generated by human movement for charging, aligning with environmental protection and energy conservation principles.

[0035] This application provides an earphone charging device, such as... Figure 1 As shown, the device includes: a housing 101, a wrist ball device 102, a power generation device 103, and a rectifier circuit. Figure 1 (Not shown in the image) and an earphone charging case 104; the power generation device 103 includes: a coil 1031 and a magnet 1032; a wrist ball device 102 is disposed inside the housing, the coil 1031 and the magnet 1032 are disposed on the wrist ball device 102, a rectifier circuit is disposed in the earphone charging case 104, and the earphone charging case 104 is disposed outside the housing 101; wherein,

[0036] The power generation device 103 is used to drive the wrist ball device 102 to move when the headphone charging device is used, and to move one of the magnet 1032 and the coil 1031, so that the relative motion between the magnet 1032 and the coil 1031 generates alternating current.

[0037] A rectifier circuit is used to convert alternating current (AC) generated by a power generation device into direct current (DC), which is used to charge the battery in the headphone charging case 104.

[0038] In practical applications, the earphone charging case 104 can also be located inside the housing 101.

[0039] In practical applications, the shape of the housing 101 can be set as needed, such as spherical or ellipsoidal, and the material of the housing 101 can also be selected as needed, such as plastic or metal. This application embodiment does not limit the shape and material of the housing 101.

[0040] The relative positions of the earphone charging case 104 and the wrist ball device 102 within the housing can be configured as needed, for example, as follows: Figure 1 As shown, they can be located on both sides of the housing 101, but this embodiment does not limit this.

[0041] In some embodiments, the wrist ball device may include: a ball core;

[0042] The wrist ball device is used such that when the headphone charging device is used, the ball core rotates, and the ball core drives one of the magnet and the coil to move, so that the relative motion between the magnet and the coil generates alternating current.

[0043] Specifically, in some embodiments, such as Figure 2 As shown, the wrist ball device 102 includes: a ball core 1021, a first fixing component 1022, and a rotating shaft (not shown in the figure); the first fixing component 1022 can also be called a bracket or a track, etc., and this embodiment does not limit it; the first fixing component 1022 is provided with two first holes; the rotating shaft passes through the ball core 1021 (that is, the rotating shaft passes through the ball core 1021; specifically, the rotating shaft can pass through the center of the ball core 1021), the rotating shaft is fixedly connected to the ball core 1021, and the two ends of the rotating shaft are respectively inserted into the two first holes of the first fixing component 1022 for rotating the rotating shaft within the first holes;

[0044] The magnet 1032 is disposed on the ball core 1021 and the coil 1031 is disposed on the first fixed part 1022. When the headphone charging device is used, the wrist ball device 102 moves and drives the ball core 1021 to rotate. The ball core 1021 drives the magnet 1032 to rotate, so that the magnet 1032 moves relative to the coil 1031, generating alternating current on the coil 1031.

[0045] For example, when using the headphone charging device, the user holds the housing 101 and moves the wrist to move the wrist ball device 102, causing the ball core 1021 of the wrist ball device 102 to rotate along the direction of rotation of the axis. This rotation direction can be clockwise or counterclockwise, depending on the direction of the user's wrist movement. During the rotation of the ball core 1021, the magnet 1032 on the ball core 1021 rotates with the ball core 1021 and moves relative to the coil 1031 on the first fixed component 1022. The relative movement of the magnet 1032 and the coil 1031 causes a change in the magnetic flux through the coil 1031, generating an induced electromotive force in the coil 1031, which in turn generates a current. As the wrist continues to move, the rotational speed of the ball core 1021 gradually increases, and the generated current also increases. The current in the coil 1031 is output to the rectifier circuit, which converts the alternating current generated by the coil 1031 into direct current, which is used to charge the battery of the headphone charging case 104.

[0046] In practical applications, the magnet 1032 can be disposed on the surface of the ball core 1021 or inside the ball core 1021. The magnet 1032 can rotate with the ball core 1021 and move relative to the coil 1031 on the first fixed component 1022. The specific position of the magnet 1032 on the ball core 1021 is not limited in this embodiment.

[0047] In some embodiments, the magnet 1032 may also be disposed on the first fixing member 1022, and the coil 1031 may be disposed on the ball core 1021. When the headphone charging device is used, the wrist ball device 102 moves and drives the ball core 1021 to rotate. The ball core 1021 drives the coil 1031 to rotate, so that the coil 1031 moves relative to the magnet 1032. At this time, the magnetic flux passing through the coil 1031 changes, thereby generating an induced electromotive force in the coil 1031, and then generating alternating current in the coil 1031.

[0048] In some embodiments, such as Figure 3 As shown, housing 101 may include an openable (e.g., removable) first part 1011 and a second part 1012, and housing 101 is covered with an anti-slip component 105;

[0049] The housing 101 has a second fixing component 1013 inside, which is a circular plate with holes.

[0050] In practical application, with the earphone charging case 104 located inside the housing 101, the second fixing member 1013 is fixed inside the housing 101. The second fixing member 1013 secures the earphone charging case 104 and separates the wrist ball device 102 from the earphone charging case 104. The earphone charging case 104 is mounted on the second fixing member 1013 and fixed to the side away from the wrist ball device 102. The housing 101 includes an openable first part 1011 and a second part 1012. After the first part 1011 is opened, the earphones can be removed from or placed into the earphone charging case 104, facilitating user access for use or charging. The two ends of the coil 1031 are connected to the earphone charging case 104 via wires passing through holes in the second fixing member 1013 to input alternating current into the rectifier circuit inside the earphone charging case 104, allowing the rectifier circuit to convert the alternating current into direct current. This application embodiment does not limit the specific shape and material of the second fixing component 1013, the specific method by which the second fixing component 1013 is fixed inside the housing 101, or the specific method by which the earphone charging case 104 is fixed to the second fixing component 1013. In practical applications, the earphones may include true wireless stereo (TWS) earphones or other earphones with charging contacts. The earphones can be placed in the earphone charging case 104 for charging. This application embodiment does not limit the type and configuration of the earphones.

[0051] In some embodiments, when the earphone charging case 104 is disposed inside the housing 101, the earphone charging case 104 may further include a charging interface. After the first part 1011 is opened, the charging interface can be connected to an external power supply to charge the battery of the earphone charging case 104, so that when the user does not want to exercise but urgently needs to use the earphones with low battery, the user can charge the battery of the earphone charging case 104 in time.

[0052] In practical applications, the first part 1011 can be opened to facilitate the removal of the earphones from the earphone charging case 104. The first part 1011 can remain connected to the second part 1012 via a connecting component (such as a silicone connecting component or connecting rod to maintain the connection between the first part 1011 and the second part 1012) after being opened, or it can be completely detached from the housing 101 after being opened. This application embodiment does not limit the specific shape and material of the first part 1011, the specific position of the first part 1011 on the housing 101, or the opening method.

[0053] In some embodiments, when the earphone charging case 104 is located outside the housing 101, the user can directly open the earphone charging case to take out the earphones. A second hole is provided on the housing 101, through which a wire connecting the power generation device 103 and the rectifier circuit passes. In practical applications, the earphone charging case 104 is located outside the housing 101 and fixed at the position where the second hole is located. Wires are connected to both ends of the coil 1031, and the alternating current in the coil 1031 passes through the wires and through the second hole to connect to the earphone charging case 104. This allows the alternating current to be input into the rectifier circuit inside the earphone charging case 104, so that the rectifier circuit converts the alternating current into direct current. This application embodiment does not limit the specific location of the second hole on the housing 101 or the specific method by which the earphone charging case 104 is fixed to the housing 101.

[0054] In some embodiments, when the earphone charging case 104 is disposed outside the housing 101, the earphone charging case 104 further includes a charging interface, which can be connected to an external power supply to charge the battery of the earphone charging case, so that when the user does not want to exercise but urgently needs to use the earphones with low battery, the user can charge the battery of the earphone charging case 104 in time.

[0055] In practical applications, the headphone charging device may slip from the user's hand. To prevent damage to the device caused by it slipping from the user's hand, anti-slip components can be provided on the housing.

[0056] Therefore, in some embodiments, the housing 101 is covered with an anti-slip component 105 to prevent the headphone charging device from slipping out of the hand during use. In practical applications, the placement of the anti-slip component can be considered from the perspective of user convenience; for example, it can be... Figure 3 An anti-slip component 105 is installed at a suitable location as shown.

[0057] In practical applications, the materials of the anti-slip components may include: silicone, rubber, polyurethane anti-slip materials, epoxy resin anti-slip materials, latex anti-slip materials, etc.

[0058] It is understood that in practical applications, the conductor may include conductors of various materials (such as copper conductors, aluminum conductors, etc.) or other materials that can transmit electrical energy (such as conductor coatings, conductive fibers, etc.). The embodiments of this application do not limit the specific form in which the AC power input in the coil 1031 is input to the rectifier circuit.

[0059] In some embodiments, the coil 1031 in the power generation device 103 can also transmit alternating current to the rectifier circuit via Wireless Power Transfer (WPT). In practical applications, magnets can be installed inside the housing 101 and the headphone charging case 104 to magnetically attach the headphone charging case 104 to the outer surface of the housing 101. A charging copper post is installed inside the housing 101 to receive the alternating current from the coil 1031 and generate a magnetic field. A receiving coil is installed inside the headphone charging case 104. The receiving coil senses the magnetic field generated by the charging copper post, thereby generating a current in the receiving coil, which in turn charges the battery of the headphone charging case.

[0060] In practical applications, the headphone charging case usually contains a PCB board, so the charging circuit, rectifier circuit, and other related circuits can be placed on the PCB board to integrate them and reduce the size. Since the current generated by the generator 103 is alternating current, but the battery in the headphone charging case needs direct current to charge it, a rectifier circuit is required to convert the alternating current to direct current. In addition, a charging circuit is required to control the charging and discharging process of the battery.

[0061] Based on this, in some embodiments, the earphone charging case 104 may include: a printed circuit board (PCB), a battery, and a charging circuit, wherein the PCB is provided with a charging circuit and a rectifier circuit; wherein...

[0062] The charging circuit is used to receive the DC power output from the rectifier circuit and use the DC power to charge the battery of the earphone charging case 104.

[0063] In practical applications, the voltage generated by the power generation device 103 may be unstable. In order to avoid the reduction of charging efficiency or damage to the charging circuit caused by voltage instability, a voltage regulator circuit can be set up to stabilize the voltage transmitted to the charging circuit.

[0064] Based on this, in some embodiments, the device may further include: a voltage regulator circuit, the voltage regulator circuit being connected to the rectifier circuit and the charging circuit, the voltage regulator circuit being disposed on a PCB; wherein...

[0065] The voltage regulator circuit is used to regulate the voltage of the DC power output from the rectifier circuit and output the regulated DC power to the charging circuit.

[0066] In practical applications, there may be a situation where the voltage generated by the power generation device 103 is insufficient. In order to avoid the reduction in charging efficiency caused by insufficient voltage, a boost circuit can be set up so that the voltage transmitted to the charging circuit can meet the charging requirements of the headphones.

[0067] Based on this, in some embodiments, the device may further include: a boost circuit, the boost circuit being connected to a rectifier circuit and a voltage regulator circuit, the voltage regulator circuit being connected to the charging circuit, and the boost circuit and the voltage regulator circuit being disposed on a PCB; wherein...

[0068] The boost circuit is used to boost the voltage of the DC power output from the rectifier circuit.

[0069] The voltage regulator circuit is used to regulate the voltage of the boosted DC power and output the regulated DC power to the charging circuit.

[0070] In some embodiments, such as Figure 4 As shown, the charging circuit may include: left earphone positive terminal L+, left earphone negative terminal L-, right earphone positive terminal R+, right earphone negative terminal R-, chip U1, electrostatic diodes D1, D2, and D3, light-emitting diodes D4 and D5, resistors R1, R2, R3, R4, R5, R6, R7, R8, and R9, capacitors C1, C2, and C3, and inductor L1; the ports of chip U1 include: ports PH1_L, PH2_R, VOUT, LX, VCC, BAT, VIN, KEY, EN, VSET, ICHG, NTC, LED1, LED2, LED3, LED4, and GND; wherein, port PH1_L is connected to resistor R2, electrostatic diode D3, and the left earphone negative terminal L- respectively, resistor R2 and the other end of electrostatic diode D3 are grounded, and port PH2_R is connected to resistor R1, electrostatic diode D2, and the right earphone negative terminal R- respectively. Port VOUT is connected to capacitor C1, electrostatic diode D1, the positive terminal L+ of the left earphone, and the positive terminal R+ of the right earphone. The other end of capacitor C1 and electrostatic diode D1 is grounded. Port LX is connected to inductor L1 and then to the BAT terminal. Port VCC is connected to capacitor C2 and then to ground. Port BAT provides current to the battery and is connected to capacitor C3 and then to ground. Port VIN receives DC power and is connected to capacitor C4 and then to ground. Port EN is connected to resistor R3 and then to ground. Port VSET is connected to resistor R4 and then to ground. Port ICHG is connected to resistor R5 and then to ground. Port NTC is connected to resistors R6 and R7. The other end of resistors R6 and R7 is grounded. Port LED1 is connected to resistor R9 and LED D5 and then to ground. Port LED2 is connected to resistor R8 and LED D4 and then to ground. Port LED3 is connected to the power supply. Port LED4 outputs the SW signal. Port GND is grounded.

[0071] In practical applications, the model (e.g., the model of the electrostatic diode can be ZST312N15 or other models) and parameters (e.g., the resistance value of the resistor, the capacitance value of the capacitor, etc.) of each electronic component can be set as needed, and this application embodiment does not limit this.

[0072] The working principle of the charging circuit includes:

[0073] Chip U1 receives DC power from AC power generated by generator 103 via port VIN. Upon receiving DC power, chip U1 charges the positive terminal of the battery through port BAT and detects the battery voltage. When the battery voltage is below a first threshold (e.g., less than 3V), pre-charging is performed; when the battery voltage is above the first threshold, constant current charging is performed; when the battery voltage is above a second threshold (e.g., greater than 4.2V), constant voltage charging is performed; charging stops when the battery is fully charged; if the battery voltage is below a third threshold (e.g., less than 4.1V), charging restarts. Chip U1 controls the battery to provide current for charging the earphones through port BAT, detecting the positive terminal L+ of the left earphone and the positive terminal L+ of the right earphone. After the earphone is connected to the positive terminal R+, the inductor L1 connected to port LX receives the current provided by the battery and stores energy. After the battery stops providing current, inductor L1 releases energy to port LX, and chip U1 provides this energy to port VOUT, allowing port VOUT to charge the left and right earphones. Port VSET can select the full charge voltage of the battery by connecting different resistors. Port ICHG can select the constant charging current of the battery by connecting different resistors. LED D4 is used to flash when the battery is charging and stays on when the battery is fully charged. LED D5 is used to flash when the battery is low during discharge and flashes once when the battery is at normal charge level before turning off. This application embodiment does not limit the specific process of the charging circuit receiving DC power and charging the battery and earphones.

[0074] In some embodiments, such as Figure 5 As shown, the rectifier circuit may include: AC input ports AC1 and AC2, diodes D5, D6, D7, and D8, and capacitor C4; wherein, port AC1 is connected to the cathode of diode D8 and the anode of diode D5, port AC2 is connected to the cathode of diode D6 and the anode of diode D7, the anodes of diodes D8 and D6 are grounded, and the cathodes of diodes D5 and D7 are connected to capacitor C4 and then grounded. The working principle of the rectifier circuit includes: when the positive half-cycle of the AC current arrives, the current flows in from port AC1 and flows through diodes D5 and D6; when the negative half-cycle of the AC current arrives, the current flows in from port AC2 and flows through diodes D7 and D8, thus converting the current of the negative half-cycle of the AC current into the current of the positive half-cycle, thereby converting the AC current into DC current. Capacitor C4 is used for filtering. This application does not limit the specific structure of the rectifier circuit.

[0075] In some embodiments, such as Figure 5As shown, the boost circuit may include: inductor L2, transistor Q1, diode D9, and capacitor C5; one end of inductor L2 is connected to capacitor C4, and the other end is connected to the collector 3 of transistor Q1 and the anode of diode D9 respectively. The cathode of diode D9 is connected to capacitor C5, and the other end of capacitor C5 is grounded; wherein, the base 1 of transistor Q1 receives the SW signal, and the emitter 2 of transistor Q1 is grounded. The working principle of the boost circuit includes: the base 1 of transistor Q1 receives the SW signal, causing transistor Q1 to periodically turn on and off. When transistor Q1 is on, the current flows sequentially through inductor L2, transistor Q1, and to ground. Inductor L2 stores energy, causing the voltage to rise, and capacitor C5 outputs a certain voltage to the voltage regulator circuit to reduce voltage fluctuations; when transistor Q1 is off, inductor L2 releases energy to the voltage regulator circuit through diode D9, and simultaneously charges capacitor C5; the specific structure of the boost circuit is not limited in this embodiment.

[0076] In some embodiments, such as Figure 5 As shown, the voltage regulator circuit may include: chip F1, capacitors C6 and C7; one end of capacitor C6 is connected to capacitor C5 and port IN of chip F1 respectively, and the other end is grounded; port F1_GND of chip F1 is grounded; port OUT outputs DC power to VIN terminal and is connected to capacitor C7; the other end of capacitor C7 is grounded.

[0077] The working principle of the voltage regulator circuit includes: chip F1 stabilizes the voltage input from port IN to a fixed value and outputs it from port OUT; capacitors C6 and C7 are used for filtering; the specific structure of the voltage regulator circuit is not limited in this application embodiment.

[0078] Understandably, in practical applications, Figure 5 The models and parameters of the electronic components shown can be set as needed, and this application embodiment does not limit this.

[0079] In some embodiments, such as Figure 6 As shown, the circuit structure of the battery may include: ports T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, and T12, and a thermistor NTC1; wherein, port T1 is connected to the thermistor NTC1, port T2 is connected to port BAT of the charging circuit, port T3 is grounded, port T4 is connected to port BAT of the charging circuit, port T5 is connected to port VIN of the charging circuit, port T6 is connected to port VOUT of the charging circuit, port T7 is connected to port PH1_L of the charging circuit, port T8 is connected to port PH2_R of the charging circuit, ports T9, T10, and T11 are grounded, and port T12 is connected to port NTC of the charging circuit.

[0080] The battery's operating principle includes: port T2 receives DC power output from port BAT of the charging circuit for charging; the resistance of thermistor NTC1 decreases as the battery temperature rises; port T1 provides the resistance value of thermistor NTC1 to port NTC of the charging circuit for temperature detection; and ports T4, T5, T6, T7, T8, T9, T10, T11, and T12 can all be used to monitor and adjust relevant battery performance parameters. This application does not limit the specific structure of the battery circuit.

[0081] In some embodiments, such as Figure 7 As shown, the circuit structure of the charging interface may include: a TYPE-C interface J1, resistors R10, R11, R12, R13, and R14, an electrostatic diode D10, capacitors C6, C7, C8, and C9, and an overcurrent and overvoltage protection chip U2; wherein, the TYPE-C interface J1 includes ports GND1, VCC1, NC, NC1, VCC2, and GND2, and ground pins 4 and 5; the overcurrent and overvoltage protection chip U2 includes ports VIN1, CTRL, OVLO, PGND, GND3, ILIM, NC, POK, and VOUT1;

[0082] The GND1 and GND2 ports of the TYPE-C interface J1 are grounded, as are the ground pins 4 and 5. Port VCC1 is connected to port VCC2, electrostatic diode D10, resistor R12, capacitor C7, and port VIN1 of the overcurrent and overvoltage protection chip U2. The other ends of the electrostatic diode D10, resistor R12, and capacitor C7 are all grounded. Port NC is connected to resistor R11 and then grounded, and port NC1 is connected to resistor R10 and then grounded. Port VIN1 of the overcurrent and overvoltage protection chip U2 is also connected to resistor R13, the other end of which is connected to port VOUT1. Ports CTRL, OVLO, PGND, and GND3 are all grounded. ILIM is connected to capacitor C8 and resistor R14, the other ends of which are grounded. Port VOUT1 outputs DC power to port VIN of the charging circuit and is connected to capacitor C9 and then grounded. In practical applications, the models and parameters of each electronic component can be set as needed, and this embodiment does not limit this.

[0083] The working principle of the charging interface includes: the TYPE-C interface J1 is connected to an external power supply, and current is output to port VIN1 of the overcurrent and overvoltage protection chip U2 through ports VCC1 and VCC2. When the overcurrent and overvoltage protection chip U2 detects that the current or voltage exceeds the protection set value, port VOUT1 of the overcurrent and overvoltage protection chip U2 stops outputting current. This application embodiment does not limit the specific structure of the charging interface circuit.

[0084] The headphone charging device provided in this application includes: a housing 101, a wrist ball device 102, a power generation device 103, a rectifier circuit, and a headphone charging case 104. The power generation device 103 includes a coil 1031 and a magnet 1032. The wrist ball device 102 is disposed within the housing, and the coil 1031 and magnet 1032 are disposed on the wrist ball device 102. The rectifier circuit is disposed within the headphone charging case 104, which is disposed inside or outside the housing 101. The power generation device 103, when the headphone charging device is used, drives the wrist ball device 102 to move, generating alternating current (AC) through the movement of the magnet 1032 relative to the coil 1031. The rectifier circuit converts the AC power generated by the power generation device into direct current (DC), which is used to charge the battery in the headphone charging case 104. The headphone charging device provided in this application allows users to exercise their wrists while simultaneously charging the headphone charging case battery, improving charging convenience, increasing the enjoyment of exercise, and extending the overall battery life of the rechargeable headphones. Furthermore, in the absence of a power source, users can use this device to charge their headphones, providing an emergency charging solution. Simultaneously, the device utilizes energy generated by human movement for charging, aligning with environmental protection and energy conservation principles.

[0085] Based on the above embodiments, this application provides a working process for an earphone charging device, such as... Figure 8 As shown, firstly, the wrist ball (i.e., the wrist ball device 102) moves, causing relative movement between the magnet (i.e., the magnet 1032) and the coil (i.e., the coil 1031), thereby causing the coil to cut the magnetic field and generate alternating current in the coil. The alternating current is converted into direct current by a rectifier circuit. If the voltage of the direct current is sufficient to charge the battery of the earphone charging case normally, the direct current is directly output to the voltage regulator circuit, which provides a stable voltage to the charging circuit. If the generated direct current voltage is insufficient, the direct current is output to the boost circuit, which provides sufficient voltage to the voltage regulator circuit, which in turn provides a stable voltage to the charging circuit. The charging circuit uses the voltage provided by the voltage regulator circuit to charge the battery of the charging case.

[0086] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0087] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. It should be noted that "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0088] It should be understood that the phrase "some embodiments" throughout the specification means that a particular feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments without conflict.

[0089] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0090] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of patent protection of this application. Any equivalent structural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. An earphone charging device, characterized by, The device comprises a shell, a wrist force ball device, a power generation device, a rectifier circuit and an earphone charging box. The power generation device comprises a coil and a magnet; the wrist force ball device is arranged in the shell, the coil and the magnet are arranged on the wrist force ball device, the rectifier circuit is arranged in the earphone charging box, and the earphone charging box is arranged inside or outside the shell; wherein The power generation device is used to move one of the magnet and the coil when the earphone charging device is used, so that the relative movement between the magnet and the coil generates alternating current. The rectifier circuit is used to convert the alternating current generated by the power generation device into direct current, and the direct current is used to charge the battery of the earphone charging box. The wrist force ball device comprises a ball core; the wrist force ball device is used to rotate the ball core when the earphone charging device is used, and the ball core drives one of the magnet and the coil to move, so that the relative movement between the magnet and the coil generates alternating current.

2. The apparatus of claim 1, wherein, The wrist force ball device further comprises a rotating shaft and a first fixing component.

3. The apparatus of claim 2, wherein, The rotating shaft penetrates the ball core, and the first fixing component is provided with two corresponding first holes; the two ends of the rotating shaft are respectively inserted into the two first holes, so that the rotating shaft can rotate in the first holes and drive the ball core to rotate; wherein, when the earphone charging device is used, the ball core drives the magnet to rotate, and the coil is arranged on the first fixing component, or the ball core drives the coil to rotate, and the magnet is arranged on the first fixing component. The earphone charging box is arranged in the shell, and the shell is provided with a second fixing component; the earphone charging box is arranged on the second fixing component; the shell comprises an openable first part; after the first part is opened, the earphone can be taken out of the earphone charging box or the earphone can be put into the earphone charging box.

4. The apparatus of claim 1, wherein, The earphone charging box further comprises a charging interface; after the first part is opened, the charging interface can be connected to an external power supply to charge the battery of the earphone charging box.

5. The apparatus of claim 4, wherein, The earphone charging box is arranged outside the shell, and the shell is provided with a second hole for connecting the wires of the power generation device and the rectifier circuit to pass through the second hole.

6. The apparatus of claim 1, wherein, The earphone charging box further comprises a charging interface; the charging interface can be connected to an external power supply to charge the battery of the earphone charging box.

7. The apparatus of claim 6, wherein, The earphone charging box comprises a printed circuit board (PCB), a battery and a charging circuit; the charging circuit and the rectifier circuit are arranged on the PCB; wherein 8. The device of any one of claims 1 to 7, wherein, The charging circuit is used to charge the battery of the earphone charging box with the direct current output by the rectifier circuit. The device further comprises a voltage stabilizing circuit; the voltage stabilizing circuit is connected with the rectifier circuit and the charging circuit, and is arranged on the PCB; wherein 9. The apparatus of claim 8, wherein, The voltage stabilizing circuit is used to stabilize the voltage of the direct current output by the rectifier circuit and output the stabilized direct current to the charging circuit. ​ 10. The apparatus of claim 8, wherein, The device further comprises a voltage boosting circuit and a voltage stabilizing circuit, the voltage boosting circuit is connected with the rectifier circuit and the voltage stabilizing circuit, the voltage stabilizing circuit is connected with the charging circuit, and the voltage boosting circuit and the voltage stabilizing circuit are arranged on a PCB. The voltage boosting circuit is configured to boost the voltage of the direct current output by the rectifier circuit. The voltage stabilizing circuit is configured to stabilize the voltage of the direct current after the voltage boosting and output the direct current after the voltage stabilizing to the charging circuit.

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