Earphone charging box and Bluetooth earphone

Abstract

The utility model discloses an earphone charging box and a Bluetooth earphone, and relates to the technical field of Bluetooth earphones, the earphone charging box comprises a housing, a charging control module and a light emitting display module; a first accommodating cavity and a second accommodating cavity are formed in the shell; the charging control module is arranged in the first accommodating cavity, and the charging control module is used for charging the earphone main body in the shell; the light-emitting display module is electrically connected with the charging control module, and the light-emitting display module is provided with a light-emitting surface for displaying a target pattern; the light-emitting display module is arranged in the second containing cavity, a light-transmitting part is arranged at the position, corresponding to the second containing cavity, of the outer surface of the shell, and the light-emitting face of the light-emitting display module faces the light-transmitting part. The charging control module is further used for controlling the light-emitting display module to carry out display work and supplying power to the light-emitting display module. According to the earphone charging box provided by the utility model, the use interestingness of the Bluetooth earphone can be increased, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of Bluetooth headset technology, and in particular to a headset charging case and Bluetooth headset. Background Technology

[0002] The earphone charging case is used to charge the earphones when they are inserted into the charging slot. However, most current earphone charging cases focus on improving the performance and charging efficiency of the charging case, but there are few related designs for when they are not charging, resulting in a poor user experience of existing earphone charging cases. Utility Model Content

[0003] The main purpose of this invention is to provide an earphone charging case and Bluetooth earphones, aiming to improve the user experience of the earphone charging case.

[0004] To achieve the above objectives, the present invention provides an earphone charging case, the earphone charging case comprising:

[0005] A housing, the interior of which has a first receiving cavity and a second receiving cavity;

[0006] A charging control module is disposed in the first accommodating cavity, and the charging control module is used to charge the earphone body inside the shell;

[0007] A light-emitting display module is electrically connected to the charging control module. The light-emitting display module has a light-emitting surface for displaying a target pattern. The light-emitting display module is disposed in the second receiving cavity. A light-transmitting part is provided on the outer surface of the housing corresponding to the position of the second receiving cavity. The light-emitting surface of the light-emitting display module is disposed facing the light-transmitting part.

[0008] The charging control module is also used to control the light-emitting display module to perform display operations and to supply power to the light-emitting display module.

[0009] In one embodiment, the charging control module includes:

[0010] Battery module;

[0011] A battery charging circuit, which is connected to the battery module, is used to charge the battery module;

[0012] The main control circuit is electrically connected to the battery module and the battery charging circuit respectively. The main control circuit is used to transmit the power of the battery module to the earphone body and the light-emitting display module, and to control the battery charging circuit to start or stop charging the battery module.

[0013] In one embodiment, the battery charging circuit includes: a first switching transistor and a first resistor;

[0014] The main control circuit connects the controlled terminal of the first switching transistor and the first terminal of the first resistor. The first terminal of the first switching transistor is connected to the power supply, and the second terminal of the first switching transistor is connected to the second terminal of the first resistor and then to the battery module.

[0015] In one embodiment, the housing has an earphone charging slot for mounting earphones and has a charging interface.

[0016] The charging control module also includes an earphone charging circuit. The input terminal of the earphone charging circuit is electrically connected to an external power source and the battery module, and the charging output terminal of the earphone charging circuit is electrically connected to the charging interface. The earphone charging circuit is used to transmit electrical energy from the external power source and the battery module to the earphone body.

[0017] In one embodiment, the headphone charging circuit includes: a first control board, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, and a first inductor;

[0018] The first interface of the first control board is grounded through the second resistor; the fourth interface of the first control board is connected to the first terminal of the first capacitor, the first terminal of the third resistor, and the external power supply; the second terminal of the first capacitor is grounded, the second terminal of the third resistor is connected to the first terminal of the fourth resistor and the main control circuit, and the second terminal of the fourth resistor is grounded; the fifth interface of the first control board is connected to the first terminal of the second capacitor, the first terminal of the first inductor, and the battery module, the second terminal of the second capacitor is grounded, and the second terminal of the first inductor is connected to the seventh interface of the first control board; the eighth interface of the first control board is connected to the first terminal of the third capacitor and the charging output terminal, the second terminal of the third capacitor is grounded; the charging output terminal is connected to the charging interface.

[0019] In one embodiment, the charging control module further includes a Hall sensor circuit connected to the battery module to draw power from the battery module;

[0020] The Hall sensor circuit is used to output a Hall signal when the earphone body is installed in the earphone charging slot, so as to control the earphone charging circuit to charge the earphone body.

[0021] In one embodiment, the charging control module further includes a protection circuit, which is electrically connected to the headphone charging circuit and the main control circuit. The protection circuit is used to output a protection signal to the main control circuit when the voltage output from the headphone charging circuit to the headphone body is greater than a first preset voltage. The main control circuit controls the headphone charging circuit to stop charging the headphone body according to the protection signal.

[0022] In one embodiment, the housing includes:

[0023] A bottom shell, on which a first groove is provided;

[0024] The cover has a second groove and is rotatably connected to the bottom shell. When the cover is rotated to close with the bottom shell, the first groove and the second groove are closed to form an earphone charging slot. The bottom shell has a first receiving cavity inside, and the cover has a second receiving cavity inside.

[0025] In one embodiment, a flexible printed circuit board is provided at the connection position between the bottom shell and the cover shell. The first end of the flexible printed circuit board is connected to the light-emitting display module, and the second end of the flexible printed circuit board is connected to the charging control module.

[0026] This utility model also provides a Bluetooth headset, which includes a headset body and a headset charging case as described in any of the above.

[0027] This invention significantly enhances the user experience by introducing a light-emitting display module into the earphone charging case and combining it with the intelligent management functions of the charging control module. The charging control module not only charges the earphones efficiently and safely but also dynamically controls the light-emitting display module to show personalized target patterns or animations based on different usage scenarios, such as a welcome animation when the case is opened, real-time feedback on charging status, or low battery reminders. Therefore, displaying rich colors and dynamic effects on the earphone charging case enhances the product's appeal and aesthetics, thereby improving the user experience. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of an embodiment of the earphone charging case provided by this utility model;

[0030] Figure 2 An exploded view of an embodiment of the earphone charging case provided by this utility model;

[0031] Figure 3 A schematic diagram of the structure of an embodiment of the main control circuit provided by this utility model;

[0032] Figure 4 A schematic diagram of an embodiment of the battery charging circuit provided by this utility model;

[0033] Figure 5 A schematic diagram of an embodiment of the headphone charging circuit provided by this utility model;

[0034] Figure 6 A schematic diagram of an embodiment of the protection circuit provided by this utility model;

[0035] Figure 7 This is a schematic diagram of a structure of an embodiment of the flexible printed circuit board provided by this utility model.

[0036] Explanation of icon numbers:

[0037] 10. Earphone charging case; 100. Shell; 110. Bottom shell; 111. Upper bottom plate; 112. Lower bottom plate; 120. Cover; 121. Upper cover; 122. Lower cover; 130. First receiving cavity; 140. Second receiving cavity; 200. Charging control module; 210. Battery module; 220. Battery charging circuit; 230. Main control circuit; 240. Earphone charging circuit; 250. Protection circuit; 300. Light-emitting display module; 400. Flexible printed circuit board;

[0038] Q1, First switching transistor; R1, First resistor; R2, Second resistor; R3, Third resistor; R4, Fourth resistor; R5, Fifth resistor; R6, Sixth resistor; R7, Seventh resistor; C1, First capacitor; C2, Second capacitor; C3, Third capacitor; C4, Fourth capacitor; U1, First control board; U2, Protection chip; U3, External connector; L1, First inductor.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0041] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] The earphone charging case is used to charge the earphones when they are inserted into the charging slot. However, most current earphone charging cases focus on improving the performance and charging efficiency, resulting in a poor user experience.

[0044] To improve the user experience of Bluetooth headphones, such as Figure 1 and Figure 2 As shown, this utility model proposes an earphone charging case 10. In one embodiment, the earphone charging case 10 includes a shell 100, a charging control module 200, and a light-emitting display module 300. The charging control module 200 controls the light-emitting display panel to display a target pattern, thereby improving the user's experience.

[0045] In this embodiment, the housing 100 has a first receiving cavity 130 and a second receiving cavity 140 inside, as well as an earphone charging slot for mounting the earphone body. It is understood that the housing 100 is the basic structure of the earphone charging case 10, providing storage space for the earphone body and serving as a carrier for its internal electronic components. Optionally, the housing 100 has an earphone charging slot on its exterior for mounting the earphone body, ensuring that the earphone body can be correctly aligned with the charging contacts for charging. The housing 100 has a first receiving cavity 130 and a second receiving cavity 140 inside for mounting electronic components.

[0046] In this embodiment, the charging control module 200 is disposed in the first receiving cavity 130. The charging control module 200 is used to charge the earphone body inside the housing 100. It can be understood that, through the electrical connection between the charging control module 200 and the earphone body, the charging control module 200 can intelligently manage the charging process, including current adjustment, charging status monitoring, etc., thereby ensuring the safety and efficiency of charging.

[0047] In this embodiment, the light-emitting display module 300 is electrically connected to the charging control module 200. The light-emitting display module 300 has a light-emitting surface for displaying a target pattern. The light-emitting display module 300 is disposed in the second receiving cavity 140. A light-transmitting part is provided on the outer surface of the housing 100 at a position corresponding to the second receiving cavity 140. The light-emitting surface of the light-emitting display module 300 is disposed facing the light-transmitting part.

[0048] Optionally, the light-transmitting part is integrally formed with the outer surface of the housing 100, or the light-transmitting part is the outer surface of the housing 100, or the outer surface of the housing 100 has a notch, and the light-transmitting part can be installed at the notch.

[0049] Optionally, the light-transmitting part is made of transparent or semi-transparent material, which can clearly display the content while maintaining the overall aesthetics of the charging case.

[0050] Understandably, the core function of the light-emitting display module 300 is to display various target patterns through its light-emitting surface. Optionally, the target patterns can convey information to the user through different colors, brightness, or dynamic effects. The light-emitting surface of the light-emitting display module 300 is positioned facing the light-transmitting portion of the outer surface of the housing 100, ensuring that light can pass through the light-transmitting portion to clearly display the target patterns.

[0051] Optionally, the emitting surface refers to the side of the light-emitting display module 300 that directly faces the user, used to transmit the light generated by the display unit outward so that the user can clearly see the displayed content. This emitting surface may be specially treated to ensure that light can pass through uniformly and efficiently, and to minimize light loss and distortion. Optionally, the emitting surface can be set with a specific output viewing angle to ensure that the user can clearly see the displayed information even when viewed from different angles.

[0052] Optionally, the light-emitting display module 300 may include a light-emitting display panel with a light-emitting surface and multiple display units on the light-emitting surface. Each display unit can be an LED chip, an LCD panel, or other types of light-emitting elements. Each display unit can be independently controlled, and different display units can be programmed to display different colors or brightness levels, thereby combining to form various complex patterns, text, or animations. This programming control logic can be stored in the charging control module 200, which can control the light-emitting display module 300 to display corresponding light-emitting display modes and patterns based on this programming control logic.

[0053] In one feasible implementation, the earphone charging case 10 can dynamically change the displayed content according to different states or user needs. For example, when the earphones are playing music, specific patterns or animations can be displayed according to the user's personalized settings. When the earphone charging case 10 is opened, specific patterns or animations can be displayed. This not only improves user convenience but also enhances the interactivity and aesthetics of the product, providing users with a richer and more personalized user experience.

[0054] It is understood that the charging control module 200 is also used to control the light-emitting display module 300 to perform display work, and to provide power to the light-emitting display module 300.

[0055] Optionally, the charging control module 200 integrates multiple functions, such as current regulation, charging status monitoring, overcurrent protection, and overvoltage protection, to ensure a safe and efficient charging experience for the earphones. Furthermore, the charging control module 200 also features power level indication and Bluetooth pairing assistance, further enhancing user convenience. Optionally, the charging control module 200 is implemented using a built-in microprocessor or application-specific integrated circuit (ASIC).

[0056] Optionally, in addition to managing the charging process of the earphones, the charging control module 200 is also responsible for controlling the operation of the light-emitting display module 300. Specifically, the charging control module 200 determines the content and method of display by the light-emitting display module 300 based on preset logic or user settings. For example, when the earphones begin charging, the charging control module 200 can instruct the light-emitting display module 300 to display specific colors or patterns to intuitively convey the current charging status to the user. It is understood that the control of the pattern display is implemented through pre-programmed logic, which may include different display modes corresponding to different operating scenarios, such as opening animations, low battery warnings, etc. Furthermore, the charging control module 200 also provides the necessary power support to the light-emitting display module 300 to ensure its stable operation. Thus, the charging control module 200 not only ensures the safe and efficient charging of the earphones but also greatly enhances the user's interactive experience and the product's aesthetics.

[0057] Optionally, the charging control module 200 can realize a user-customizable display function, and the design of the luminous display module 300 also supports user-customizable display content, further meeting personalized needs, so that the earphone charging case 10 is no longer just a functional accessory, thereby comprehensively improving the user's convenience and enjoyment.

[0058] In summary, this invention significantly enhances the user experience by introducing a light-emitting display module 300 into the earphone charging case 10 and combining it with the intelligent management function of the charging control module 200. The charging control module 200 not only efficiently and safely charges the earphones but also dynamically controls the light-emitting display module 300 to display personalized target patterns or animations according to different usage scenarios, such as a welcome animation when the case is opened, real-time feedback on charging status, or low battery reminders. Therefore, displaying rich colors and dynamic effects on the earphone charging case 10 enhances the product's fun and aesthetics.

[0059] In one embodiment, the charging control module 200 includes a battery module 210, a battery charging circuit 220, and a main control circuit 230. The battery charging circuit 220 is connected to the battery module 210 and is used to charge the battery module 210. The main control circuit 230 is electrically connected to both the battery module 210 and the battery charging circuit 220. The main control circuit 230 is used to transmit power from the battery module 210 to the earphone body and the light-emitting display module 300, and to control the battery charging circuit 220 to start or stop charging the battery module 210.

[0060] In this embodiment, the battery module 210 is an energy storage unit, which can be a single battery cell. The battery module 210 is used to charge the earphone body when it needs charging after being placed in the earphone charging slot, and also to be electrically connected to the light-emitting display module 300 to provide it with the necessary power support. Optionally, considering battery safety and lifespan, the battery module 210 is typically also equipped with a corresponding protection circuit 250 to prevent abnormal situations such as overcharging, over-discharging, or short circuits, thereby ensuring user safety.

[0061] In this embodiment, the battery charging circuit 220 is directly connected to the battery module 210, and is used to obtain electrical energy from an external power source and transmit it to the battery module 210 for charging. Optionally, the battery charging circuit 220 can identify the current battery state (such as charge level) and adjust the charging parameters accordingly to achieve a fast and safe charging process. Optionally, to further improve the user experience, the battery charging circuit 220 may also include some additional functions, such as charging status indication and automatic power-off protection, which help users better understand the charging progress and avoid damage to battery performance due to overcharging.

[0062] In this embodiment, the main control circuit 230 serves as the core of the charging control module 200, managing and distributing power, and coordinating the overall system operation. The main control circuit 230 is electrically connected to both the battery module 210 and the battery charging circuit 220, ensuring that power from the battery module 210 is transmitted to the earphone body and the light-emitting display module 300. Optionally, the main control circuit 230 has the ability to control the battery charging circuit 220 to start or stop charging the battery module 210. More importantly, the main control circuit 230 can also be programmed to control the light-emitting display module 300 to display specific patterns or animations, enhancing the user interaction experience while showcasing the product's intelligent features, thereby improving the user experience.

[0063] In one embodiment, such as Figure 4 As shown, the battery charging circuit 220 includes: a first switch Q1 and a first resistor R1; the main control circuit 230 is connected to the controlled terminal of the first switch Q1 and the first terminal of the first resistor R1, the first terminal of the first switch Q1 is connected to the power supply, and the second terminal of the first switch Q1 is connected to the second terminal of the first resistor R1 and then connected to the battery module 210.

[0064] In this embodiment, the battery charging circuit 220 is designed to charge the battery module 210 efficiently and safely. The battery charging circuit 220 includes a first switching transistor Q1 and a first resistor R1. The main control circuit 230 controls the controlled terminal (gate or base) of the first switching transistor Q1 to determine whether to turn the current path on or off. When the main control circuit 230 issues a charging command, it drives the first switching transistor Q1 to conduct, allowing power (usually an external power source) to flow through the first switching transistor Q1 to charge the battery module 210. Simultaneously, the first resistor R1 is connected in series in the circuit to limit the charging current and prevent overcurrent damage to the battery module 210. Thus, by controlling the state of the first switching transistor Q1 through the main control circuit 230, intelligent management of the charging process can be achieved, ensuring that the battery module 210 completes charging under safe and efficient conditions.

[0065] like Figure 3 and Figure 4 As shown, Figure 3 Main control circuit 230, Figure 4 Battery charging circuit 220, Figure 4 The PA4 interface in the middle, and Figure 3 The PA4 interface is connected, thus establishing an electrical connection between the battery charging circuit 220 and the main control circuit 230. Additionally, Figure 4 VCC in the text refers to the external power supply, and VBAT refers to the battery module 210.

[0066] It is understandable that the first switching transistor Q1 can be a MOSFET, IGBT, or field-effect transistor, etc.

[0067] In one embodiment, the housing 100 has an earphone charging slot for mounting the earphone body and has a charging interface; the charging control module 200 further includes an earphone charging circuit 240, the input terminal of which is electrically connected to an external power source and the battery module 210, and the charging output terminal of which is electrically connected to the charging interface, and the earphone charging circuit 240 is used to transmit electrical energy from the external power source and the battery module 210 to the earphone body.

[0068] In this embodiment, the earphone charging slot is equipped with specific charging interfaces to ensure that the earphone body can be correctly aligned and connected to these interfaces for charging.

[0069] In addition, the charging control module 200 also includes a headphone charging circuit 240, which acts as a bridge for power transmission. The input of the headphone charging circuit 240 is connected to both an external power source and the battery module 210. This means that whether connected to an external power source (such as a computer or power adapter via USB) or powered solely by the battery module 210, the headphone charging circuit 240 can effectively acquire power. The charging output of the headphone charging circuit 240 is directly connected to the charging interface, thus efficiently and safely transferring the acquired power to the headphone unit.

[0070] In one embodiment, such as Figure 5As shown, the headphone charging circuit 240 includes: a first control board U1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a first inductor L1; the first interface (KEY) of the first control board U1 is grounded through the second resistor R2; the fourth interface (VIN) of the first control board U1 is connected to the first terminal of the first capacitor C1, the first terminal of the third resistor R3, and the external power supply; the second terminal of the first capacitor C1 is grounded, and the second terminal of the third resistor R3 is connected to the first terminal of the fourth resistor R4 and the external power supply. The main control circuit 230 is connected, and the second end of the fourth resistor R4 is grounded; the fifth interface (BAT) of the first control board U1 is connected to the first end of the second capacitor C2, the first end of the first inductor L1, and the battery module 210, the second end of the second capacitor C2 is grounded, and the second end of the first inductor L1 is connected to the seventh interface (LX) of the first control board U1; the eighth interface (OUT) of the first control board U1 is connected to the first end of the third capacitor C3 and the charging output terminal, the second end of the third capacitor C3 is grounded; the charging output terminal is connected to the charging interface. The sixth interface (GND) of the first control board U1 is grounded.

[0071] Understandably, the headphone charging circuit 240 ensures efficient and stable power transmission through the coordinated operation of a series of components. First, external power enters the first control board U1 via the fourth interface (VIN) and is regulated by a filter network composed of the first capacitor C1 and the third resistor R3 to ensure input voltage stability. Simultaneously, power supplied by the battery module 210 is also connected via the fifth interface (BAT) and further regulated by a smoothing circuit composed of the second capacitor C2 and the first inductor L1 to provide a stable current output. The first control board U1 adjusts the power supply at the charging output terminal based on the feedback signal from the main control circuit 230 via the fourth resistor R4. Finally, the power, filtered again by the third capacitor C3, is connected to the charging interface through the charging output terminal, providing charging current for the headphone body and the light-emitting display module 300.

[0072] It is understandable that, such as Figure 5 As shown, DECT_5V_IN is the interface connected to the main control circuit 230, and the main control circuit 230 has a DECT_5V_IN interface that matches DECT_5V_IN.

[0073] Optionally, the number of headphone units can be one or more.

[0074] In one embodiment, the charging control module 200 further includes a Hall effect sensor circuit, which is connected to the battery module 210 and the main control circuit 230 to draw power from the battery module 210. The Hall effect sensor circuit is used to output a Hall effect signal to the main control circuit 230 when an earphone is installed in the earphone charging slot, and the main control circuit 230 controls the earphone charging circuit 240 to charge the earphone according to the Hall effect signal.

[0075] In this embodiment, the charging control module 200 integrates a Hall effect sensor circuit to enhance the intelligence level and user experience of the earphone charging case 10. The Hall effect sensor circuit is connected to the battery module 210 and directly draws power from it to support its operation. This circuit is designed to detect whether the earphones are correctly placed in the earphone charging slot. When the earphones are placed in the charging slot, the Hall effect sensor detects this change and outputs a specific Hall effect signal. This signal is then used to trigger the earphone charging circuit 240, causing it to begin charging the earphones. This simplifies the user's operation, eliminating the need to manually activate the charging function, and ensures that the charging process only begins when the earphones are correctly placed and ready, thereby improving charging efficiency and safety, and further enhancing the overall user experience.

[0076] In one embodiment, such as Figure 6 As shown, the charging control module 200 also includes a protection circuit 250, which is electrically connected to the headphone charging circuit 240 and the main control circuit 230. The protection circuit 250 is used to output a protection signal to the main control circuit 230 when the voltage output from the headphone charging circuit 240 to the headphone is greater than a first preset voltage. The main control circuit 230 controls the headphone charging circuit 240 to stop charging the headphone according to the protection signal.

[0077] In this embodiment, the protection circuit 250 ensures the safety and reliability of the headphone charging process. In one feasible implementation, when the headphone charging circuit 240 starts charging the headphones, the protection circuit 250 continuously monitors the output voltage. If the output voltage exceeds a first preset voltage (i.e., a set safety threshold), the protection circuit 250 immediately generates a protection signal and transmits it to the main control circuit 230. Upon receiving this protection signal, the main control circuit 230 responds quickly and controls the headphone charging circuit 240 to stop supplying power to the headphones, thereby preventing damage to the headphones due to excessive voltage. This effectively avoids charging failures or equipment damage caused by excessive voltage, improves the overall system safety, and enhances product reliability and user experience.

[0078] In this embodiment, as Figure 6As shown, the protection circuit 250 includes an external connector U3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a fourth capacitor C4, a fifth capacitor, and a protection chip U2. The second and fifth interfaces of the external connector U3 are connected to the input terminal of the protection chip U2 and to the output terminal of the protection chip U2 through the seventh resistor R7. The output terminal of the protection chip U2 is used to output electrical energy to the battery module 210. The third interface of the external connector U3 is connected to the first terminal and the first ground terminal of the fourth capacitor C4 through the sixth resistor R6. The fourth interface of the external connector U3 is connected to the first terminal and the first ground terminal of the fourth capacitor C4 through the fifth resistor R5. The second terminal of the fourth capacitor C4 is connected to the path between the second interface of the external connector U3 and the input terminal of the protection chip U2. The sixth and first interfaces of the external connector U3 are connected to the first ground terminal. The ground terminal of the protection chip U2 is connected to the first ground terminal. The output terminal of the protection chip U2 is grounded through the fifth capacitor. Understandably, the protection circuit 250 receives input power through the external connector U3 and uses the protection chip U2 to monitor and regulate the voltage, ensuring safe and stable power transmission to the battery module 210. The second and fifth interfaces of the external connector U3 are connected to the input and output terminals of the protection chip U2, respectively, while the third and fourth interfaces are connected to the fourth capacitor C4 and the ground terminal through the sixth resistor R6 and the fifth resistor R5, for current limiting and input voltage filtering. The fourth capacitor C4 and the fifth capacitor provide further filtering and smoothing functions at the input and output terminals, respectively, reducing voltage fluctuations. This ensures the safe charging of the battery module 210 and the device.

[0079] In one embodiment, such as Figure 2 As shown, the housing 100 includes a bottom shell 110 and a cover shell 120. The bottom shell 110 is provided with a first groove; the cover shell 120 is provided with a second groove. The cover shell 120 is rotatably connected to the bottom shell 110. When the cover shell 120 is rotated to cover the bottom shell 110, the first groove and the second groove are closed to form an earphone charging slot. The cover shell 120 has a first receiving cavity 130 inside, and the bottom shell 110 has a second receiving cavity 140 inside.

[0080] In this embodiment, the housing 100 adopts a split design, consisting of a bottom shell 110 and a top shell 120, which are rotatably connected to achieve the opening and closing function. When the top shell 120 rotates relative to the bottom shell 110 and is fully closed, the first groove and the second groove together form a complete headphone charging slot. In this way, not only can the headphones be securely fixed in the mounting slot during charging, but the closed structure also provides additional protection for the headphones.

[0081] Furthermore, the rotatable connection between the bottom shell 110 and the cover shell 120 enhances ease of use; users can easily open and close the cover shell 120 to remove or insert the earphones, making the operation simple and intuitive. Optionally, the rotatable connection between the bottom shell 110 and the cover shell 120 is achieved through one or more hinge mechanisms, thereby enabling the opening and closing of the charging case. The hinges can be made of durable materials such as metal or high-strength plastic to ensure long-term reliability.

[0082] It should be noted that the specific locations of the first receiving cavity 130 and the second receiving cavity 140 are not limited here. Both can be located on the bottom shell 110, both on the cover shell 120, or one on the cover shell 120 and the other on the bottom shell 110. Furthermore, the orientation of the light-emitting surface of the light-emitting display module 300 is not limited here. It can face the outside of the earphone charging case 10 or the inside of the earphone charging case 10. Here, the outside refers to the exposed outside after the bottom shell 110 and the cover shell 120 are closed, which the user can directly see; the inside refers to the sealed inside after the bottom shell 110 and the cover shell 120 are closed, which the user can observe when the bottom shell 110 and the cover shell 120 are open.

[0083] In this embodiment, the bottom shell 110 has a first receiving cavity 130 inside, and the cover shell 120 has a second receiving cavity 140 inside. Optionally, the bottom shell 110 has an upper bottom plate 111 and a lower bottom plate 112, with the first receiving cavity 130 formed between the upper bottom plate 111 and the lower bottom plate 112; the cover shell 120 has an upper cover plate 121 and a lower cover plate 122, with the second receiving cavity 140 formed between the upper cover plate 121 and the lower cover plate 122.

[0084] Understandably, the first receiving cavity 130 and the second receiving cavity 140 are respectively located in the bottom shell 110 and the cover shell 120, allowing the charging control module 200 and the light-emitting display module 300 to be rationally distributed in the two parts of the earphone charging case 10. This optimizes the use of internal space and avoids the increased thickness caused by concentrating the main charging control module 200 and the light-emitting display module 300 in one place. If both the charging control module 200 and the light-emitting display module 300 were located in the bottom shell 110 or the cover shell 120, that part would be abnormally thick and heavy, affecting the overall aesthetics and portability of the product, and potentially negatively impacting the user's grip and user experience. Therefore, the first receiving cavity 130 and the second receiving cavity 140 are respectively located in the bottom shell 110 and the cover shell 120, ensuring ease of use and comfort, thereby comprehensively enhancing the user experience.

[0085] Secondly, by placing the luminescent display module 300 within the second receiving cavity 140 of the cover 120, the user's visual habits when using the earphone charging case 10 are utilized, greatly enhancing the intuitiveness and convenience of information delivery. Since the cover 120 is located on top of the charging case in most cases, and is usually facing the user or in a more easily visible position whether the cover is open, closed, or placed normally, the luminescent display module 300 can interact with the user more directly. For example, when the user opens the cover to take out the earphones, or simply checks the charging status without opening the cover, the luminescent display module 300 can use its advantageous position to display the image to the user. This helps to enhance the user experience.

[0086] Optionally, the earphone charging case 10 has a flat design, with both the bottom shell 110 and the cover shell 120 being flat. In this way, the light-emitting display module 300 can be placed in the cover shell 120, which can have a larger display area and can display more patterns or information, thus enhancing the user experience.

[0087] In one embodiment, such as Figure 2 and Figure 7 As shown, a flexible printed circuit board 400 is provided at the connection position between the bottom shell 110 and the cover shell 120. The first end of the flexible printed circuit board 400 is connected to the light-emitting display module 300, and the second end of the flexible printed circuit board 400 is connected to the charging control module 200.

[0088] In this embodiment, the flexible printed circuit board 400 establishes a bridge for signal and power transmission between the light-emitting display module 300 and the charging control module 200. By utilizing the thin, flexible, and bendable characteristics of the flexible printed circuit board 400, it can not only adapt to the rotatable connection structure between the bottom shell 110 and the cover shell 120, but also effectively save internal space and improve the overall design compactness. Furthermore, through the connection of the flexible printed circuit board 400, the charging control module 200 can precisely control the display content of the light-emitting display module 300, further enhancing the functionality and user experience of the earphone charging case 10.

[0089] In one embodiment, the light-emitting display module 300 includes an LED display module and a display driving module. The display driving module is electrically connected to the charging control module 200, and the charging control module 200 is used to control the display driving module to drive the LED display module to display a target pattern.

[0090] In this embodiment, the LED display module can be an LED dot matrix display panel, which has multiple LED beads. The combination state of these LED beads is controlled by programming, and this programming control logic is integrated into the display driver module. Thus, the display driver module can control the LED dot matrix display panel to form various patterns, text, or dynamic effects. For example, it can be used to display the battery status of the earphone charging case 1010 (such as using different icons to indicate charging, fully charged, or low battery), as well as some fun animations or personalized patterns. This design is not only powerful in function but also significantly enhances the product's technological feel and user experience.

[0091] In one feasible implementation, the LED dot matrix display panel is a 16×9 LED dot matrix display panel, where SEG1-SEG16 are row activation terminals and GD1-GD9 are column activation terminals. If it is necessary to display LED beads in the second row and second column, it is only necessary to activate SEG2 and GD2 simultaneously. It is understood that the LED dot matrix display panel can have multiple positions without LED beads, such as the first and second columns in the sixth row, thus avoiding the display of patterns in positions where patterns should not be displayed. That is, 16x9 represents the number of row and column activation terminals. Furthermore, SEG1-SEG16 of the display driving module are row driving terminals, and GD1-GD9 are column driving terminals; the SEG1 row driving terminal and the SEG1 row activation terminal are connected accordingly, and so on. For ease of understanding, subsequent LED beads need to satisfy the condition that the corresponding row activation terminal is activated (first activation state) and the corresponding column activation terminal is activated (second activation state). When a row driver is activated, it sends a signal to the corresponding row activation terminal, causing all LEDs in that row to enter the first activation state. Subsequently, when a column driver is activated, it causes the LEDs in that column to enter the second activation state. If an LED is simultaneously in both the first and second activation states, it will light up.

[0092] Optionally, the battery charging circuit 220, the earphone charging circuit 240, the protection circuit 250, and the Hall sensor circuit are all integrated into the main control circuit 230.

[0093] This utility model also provides a Bluetooth headset, which includes a headset charging case 10 as described in any of the above embodiments. It should be noted that the specific structure of the headset charging case 10 refers to the above embodiments. Since the Bluetooth headset proposed by this utility model includes all solutions of all embodiments of the above-described headset charging case 10, it has at least the same technical effects as the headset charging case 10, and will not be elaborated further here.

[0094] In one embodiment, the Bluetooth earphone includes an earphone body and an earphone charging case 10. In practical applications, the Bluetooth earphone can dynamically change the displayed content according to different states or user needs. For example, when the earphone body is playing music, specific patterns or animations can be displayed according to the user's personalized settings. When the Bluetooth earphone case is opened, specific patterns or animations can be displayed. In this way, not only is the user's convenience improved, but the interactivity and aesthetics of the product are also enhanced, providing users with a richer and more personalized user experience.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An earphone charging case (10), characterized in that, The earphone charging box (10) comprises: a shell (100), an inside of the shell (100) having a first accommodating cavity (130) and a second accommodating cavity (140); a charging control module (200) arranged in the first accommodating cavity (130), the charging control module (200) being used for charging work of an earphone main body in the shell (100); a light-emitting display module (300) electrically connected with the charging control module (200), the light-emitting display module (300) having a light-emitting surface used for displaying a target pattern; the light-emitting display module (300) being arranged in the second accommodating cavity (140), a light-transmitting part corresponding to a position of the second accommodating cavity (140) on an outer surface of the shell (100) being arranged, and the light-emitting surface of the light-emitting display module (300) being arranged towards the light-transmitting part; the charging control module (200) is further used for controlling the light-emitting display module (300) to perform display work and for supplying power to the light-emitting display module (300).

2. The earphone charging case (10) of claim 1, characterized in that, The charging control module (200) comprises: a battery module (210); a battery charging circuit (220) connected with the battery module (210) and used for charging the battery module (210); a main control circuit (230) electrically connected with the battery module (210) and the battery charging circuit (220), respectively, the main control circuit (230) being used for transmitting power supply of the battery module (210) to the earphone main body and the light-emitting display module (300) and for controlling the battery charging circuit (220) to start or stop charging the battery module (210).

3. The earphone charging case (10) of claim 2, characterized in that, The battery charging circuit (220) comprises a first switch tube (Q1) and a first resistor (R1). The main control circuit (230) is connected with a controlled end of the first switch tube (Q1) and a first end of the first resistor (R1), a first end of the first switch tube (Q1) is connected with a power supply, and a second end of the first switch tube (Q1) is connected with a second end of the first resistor (R1) and then connected with the battery module (210).

4. The earphone charging case (10) of claim 2, characterized in that, The shell (100) has an earphone charging groove used for mounting the earphone main body, and the earphone charging groove has a charging interface. The charging control module (200) further comprises an earphone charging circuit (240), an input end of the earphone charging circuit (240) is electrically connected with an external power supply and the battery module (210), an output end of the earphone charging circuit (240) is electrically connected with the charging interface, and the earphone charging circuit (240) is used for transmitting electric energy of the external power supply and the battery module (210) to the earphone main body.

5. The earphone charging case (10) of claim 4, characterized in that, The earphone charging circuit (240) comprises a first control board (U1), a second resistor (R2), a third resistor (R3), a fourth resistor (R4), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3) and a first inductor (L1). The first interface of the first control board (U1) is grounded through the second resistor (R2); the fourth interface of the first control board (U1) is connected with the first end of the first capacitor (C1), the first end of the third resistor (R3) and the external power supply; the second end of the first capacitor (C1) is grounded, the second end of the third resistor (R3) is connected with the first end of the fourth resistor (R4) and the main control circuit (230), and the second end of the fourth resistor (R4) is grounded; the fifth interface of the first control board (U1) is connected with the first end of the second capacitor (C2), the first end of the first inductor (L1) and the battery module (210), the second end of the second capacitor (C2) is grounded, and the second end of the first inductor (L1) is connected with the seventh interface of the first control board (U1); the eighth interface of the first control board (U1) is connected with the first end of the third capacitor (C3) and the charging output end, and the second end of the third capacitor (C3) is grounded; and the charging output end is connected with the charging interface.

6. The earphone charging case (10) of claim 4, characterized in that, The charging control module (200) further comprises a Hall sensing circuit, which is connected with the battery module (210) to obtain power from the battery module (210); The Hall sensing circuit is configured to output a Hall signal when the earphone charging slot is installed with an earphone main body, so as to control the earphone charging circuit (240) to charge the earphone main body.

7. The earphone charging case (10) of claim 4, characterized in that, The charging control module (200) further comprises a protection circuit (250), which is electrically connected with the earphone charging circuit (240) and the main control circuit (230), and is configured to output a protection signal to the main control circuit (230) when the voltage output by the earphone charging circuit (240) to the earphone main body is greater than a first preset voltage, and the main control circuit (230) controls the earphone charging circuit (240) to stop charging the earphone main body according to the protection signal.

8. The earphone charging case (10) according to any one of claims 1 to 7, characterized in that, The shell (100) comprises: a bottom shell (110) provided with a first groove on the top thereof; a cover shell (120) provided with a second groove on the top thereof, the cover shell (120) being rotatably connected with the bottom shell (110), when the cover shell (120) is rotated to be closed with the bottom shell (110), the first groove and the second groove are closed to form an earphone charging slot; the bottom shell (110) is provided with the first accommodating cavity (130) in the shell, and the cover shell (120) is provided with the second accommodating cavity (140) in the shell.

9. The earphone charging case (10) of claim 8, characterized in that, The flexible printed circuit board (400) is provided at the connection position of the bottom shell (110) and the cover shell (120), the first end of the flexible printed circuit board (400) is connected with the light-emitting display module (300), and the second end of the flexible printed circuit board (400) is connected with the charging control module (200).

10. A Bluetooth earpiece, characterized in that, The Bluetooth earphone comprises an earphone main body and the earphone charging box (10) according to any one of claims 1 to 9.

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