TWS earphone with replaceable battery

Abstract

The TWS earphone comprises a first shell and a second shell which form an earphone main body, a functional assembly is accommodated between the first shell and the second shell, a battery assembly is arranged at the upper part of the second shell, a detachable connecting structure is arranged between the second shell and the battery assembly, and the battery assembly can be electrically connected with the functional assembly. According to the utility model, the upper part of the second housing is provided with the battery assembly, and the battery assembly is connected with the second housing through the detachable connection structure, so that a user can easily replace a battery without putting the whole earphone back to a charging box for charging. Besides, as the battery assembly is arranged at the upper part of the second shell, the interior of the earphone still has enough space for integrating functional assemblies such as pressure control, multi-microphone call noise reduction and active noise reduction, other functions of the TWS earphone do not need to be sacrificed, and the situation that the space layout difficulty is increased due to the replaceable design of a battery, so that the function is lost is avoided.

Description

[Technical Field]

[0001] This utility model relates to the field of TWS earphone technology, and in particular to a TWS earphone with a replaceable battery. [Background Technology]

[0002] With the rapid development of technology, true wireless stereo (TWS) earbuds have been widely used in the market. Consumers are placing increasingly higher demands on the battery life, functional versatility, and ease of use of TWS earbuds.

[0003] Traditional TWS earbuds typically use a built-in, non-replaceable battery design. This means that users often need to place the earbuds in the charging case for a long time to recharge after the battery is depleted. In some scenarios where it is not possible to charge them in time, such as long-distance travel or long-term outdoor exercise, the use of earbuds will be greatly limited, which will seriously affect the user experience.

[0004] To address the aforementioned issues, while replaceable-battery TWS earbuds have emerged on the market, their implementation faces numerous challenges. On one hand, achieving convenient battery replacement within the limited space of the earbuds is no easy feat. On the other hand, the implementation of mainstream TWS earbud functions, such as pressure-sensitive control, multi-microphone call noise reduction, and active noise cancellation, inherently requires integrating complex sensors and circuitry within a confined space. The replaceable-battery design further exacerbates the spatial layout difficulties, resulting in many replaceable-battery TWS earbuds failing to achieve ideal functionality and user experience. For example, most designs on the market that place the replaceable battery on the ear stem cannot meet the requirements of active noise cancellation and pressure-sensitive functions due to space constraints. [Utility Model Content]

[0005] The purpose of this invention is to provide a TWS earphone with a replaceable battery, aiming to solve the aforementioned problems existing in the prior art.

[0006] This utility model is achieved through the following technical solution:

[0007] A TWS earphone with a replaceable battery includes a first shell and a second shell constituting the main body of the earphone. A functional component is housed between the first shell and the second shell. A battery component is provided on the upper part of the second shell. A detachable connection structure is provided between the second shell and the battery component. The battery component can be electrically connected to the functional component.

[0008] As described above, a TWS earphone with a replaceable battery includes a battery housing detachably connected to the upper part of the second housing, a battery inside the battery housing, an electrical connector at the bottom of the battery that can pass through the battery housing and connect to the functional component, a battery cover detachably connected to the battery housing above the battery, and the detachable connection structure between the battery housing and the upper part of the second housing.

[0009] As described above, a TWS earphone with a replaceable battery has a battery mounting slot on one side of the second housing that matches the battery case. The battery mounting slot has a through hole for the functional component to pass through and make an electrical connection with the electrical connector. The detachable connection structure includes a first magnetic part on one side of the second housing and a second magnetic part inside the battery case. When the battery component is placed into the battery mounting slot, the first magnetic part and the second magnetic part attract each other to fix the battery component.

[0010] As described above, in a TWS earphone with a replaceable battery, the first magnetic part includes a magnetic mounting position disposed on one side of the second housing, the magnetic mounting position being provided with a first magnetic element that matches it, and the second magnetic part being disposed between the battery housing and the electrical connector.

[0011] As described above, a replaceable battery TWS earphone has the following features: the first housing includes a first upper ear shell connected to a first ear stem shell; the second housing includes a second upper ear shell corresponding to the first upper ear shell, and the second upper ear shell is connected to a second ear stem shell corresponding to the second upper ear shell.

[0012] As described above, a replaceable battery TWS earphone includes a circuit board disposed on one side of the first upper ear shell. The circuit board is electrically connected to a control main board disposed between the first ear shell and the second ear shell. The circuit board is provided with a spring pin connector that can pass through the through hole and be electrically connected to the electrical connector.

[0013] As described above, in a TWS earphone with a replaceable battery, the battery mounting slot is provided with a positioning part that restricts the rotation of the battery assembly, and the battery casing is provided with a positioning groove that matches the positioning part.

[0014] As described above, a TWS earphone with a replaceable battery has an anti-slip texture around the outer periphery of the battery cover.

[0015] As described above, a TWS earphone with a replaceable battery has a side groove along the bottom edge of the battery case for easy assembly, and the bottom of the battery mounting groove has a side platform that mates with and connects to the side groove.

[0016] As described above, in a TWS earphone with a replaceable battery, an earbud shell is also connected to one side of the first housing.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. By placing the battery assembly on the upper part of the second shell and connecting it to the upper part of the second shell using a detachable connection structure, users can easily replace the battery without having to put the entire earbud back into the charging case for charging. Furthermore, because the battery assembly is located on the upper part of the second shell, there is still enough space inside the earbuds to integrate functional components such as pressure-sensitive control, multi-microphone call noise reduction, and active noise cancellation, without sacrificing other TWS earbud functions. This avoids the situation where a replaceable battery design increases the difficulty of space layout and leads to functional loss.

[0019] 2. Because the battery assembly is replaceable, users can quickly replace the battery with a new one when it runs out of power, thus extending the earphone's usage time. There's no need to replace the entire earphone if the battery is damaged or malfunctions. This solves the problem of limited usability of traditional TWS earphones in scenarios where charging is not readily available, improving the user experience.

[0020] 3. The positioning part inside the battery mounting slot and the positioning groove on the battery casing work together to restrict the rotation of the battery assembly, ensuring its stability within the mounting slot. Simultaneously, the magnetic structure facilitates battery assembly removal and replacement while also ensuring battery stability within the earphone.

[0021] 4. The bottom edge of the battery casing has a side groove for easy assembly, and the bottom of the battery mounting slot has a side platform that mates with the side groove, improving the ease of assembly of the battery assembly. Meanwhile, the anti-slip texture on the outer perimeter of the battery cover enhances the user's feel when removing the battery cover, further improving the convenience of battery replacement. [Attached Image Description]

[0022] To more clearly illustrate the technical solutions in the embodiments of the utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of this embodiment. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of this embodiment. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of this embodiment. Figure 3 ;

[0026] Figure 4 for Figure 3A schematic diagram of the cross-section along the middle AA;

[0027] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of this embodiment. Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the three-dimensional exploded structure of this embodiment. Figure 2 ;

[0029] Figure 7 This is a schematic diagram of the three-dimensional exploded structure of this embodiment. Figure 3 ;

[0030] Figure 8 This is a three-dimensional structural diagram of the battery assembly in this embodiment;

[0031] Figure 9 This is an exploded view of the battery assembly in this embodiment;

[0032] Figure 10 This is a front view of the second housing in this embodiment.

Detailed Implementation Methods

[0033] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0034] Please see Figures 1 to 10 This embodiment provides a TWS earphone with a replaceable battery, including a first shell 1 and a second shell 2 constituting the main body of the earphone. A functional component 3 is accommodated between the first shell 1 and the second shell 2. A battery component 4 is provided on the upper part of the second shell 2. A detachable connection structure 5 is provided between the second shell 2 and the battery component 4. The battery component 4 can be electrically connected to the functional component 3.

[0035] In this embodiment, the first housing 1 and the second housing 2 combine to form a complete earphone body structure. The functional components 3 housed in both can include an integrated Bluetooth communication unit, an audio codec, and a carefully designed circuit and sensor layout for pressure-sensitive control, multi-microphone call noise reduction, and active noise cancellation. The upper part of the second housing 2 is detachably connected to the battery assembly 4 via a detachable connection structure 5, such as magnetic, snap-fit, threaded, or any combination of locking mechanisms.

[0036] Optionally, in some embodiments, the detachable connection structure 5 can be a dual locking mechanism of magnetic attraction and snap-fit. A strong magnet is provided on one side of the battery assembly 4, and a matching magnetic surface is provided on the upper inner side of the second housing 2. At the same time, a small snap-fit ​​is provided at the contact point between the edge of the battery assembly 4 and the second housing 2. During installation, the magnetic attraction first initially positions and guides the battery assembly 4 into place accurately, and then the snap-fit ​​automatically locks, ensuring that the battery assembly 4 and the second housing 2 are firmly and tightly connected. The battery assembly 4 and the functional component 3 achieve a reliable electrical connection, ensuring the normal operation of the headphones.

[0037] Existing TWS earbuds typically integrate the battery into the ear stem, thus limiting the placement of a motherboard with multi-touch functionality within this area. However, this embodiment addresses this by placing the battery assembly 4 at the top of the earbud head, specifically on the upper part of the second housing 2. This avoids the motherboard and other critical functional areas, allowing for the successful integration of complex and space-constrained advanced functions such as pressure-sensitive control, multi-microphone call noise reduction, and active noise cancellation within the limited earbud space. This significantly enhances the earbud's functional completeness, providing users with a richer and higher-quality experience. For example, it effectively reduces ambient noise interference during calls and enables convenient music playback control and call answering / hanging up via pressure-sensitive operation, meeting user needs in various scenarios. Furthermore, the detachable connection structure 5 not only ensures a stable connection for the battery assembly 4 but also facilitates easy replacement, extending the earbud's lifespan. When the battery is damaged or malfunctions, only the spare battery assembly 4 needs to be replaced, eliminating the need to replace the entire earbud. On the other hand, in situations where users cannot charge in time, such as during long-term outdoor exercise or long-distance travel, the spare battery component can be easily replaced, significantly extending the earphone's usage time and avoiding interruptions due to insufficient power. This improves the convenience and flexibility of earphone use and effectively solves the problem of traditional TWS earphones struggling to balance functional integrity and battery replaceability.

[0038] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the battery assembly 4 includes a battery housing 41 detachably connected to the upper part of the second housing 2, a battery 42 disposed inside the battery housing 41, an electrical connector 43 at the bottom of the battery 42 that can pass through the battery housing 41 and connect to the functional component 3, a battery cover 44 detachably connected to the battery housing 41 on the upper part of the battery 42, and the detachable connection structure 5 is provided between the battery housing 41 and the upper part of the second housing 2.

[0039] In this embodiment, the battery housing 41 of the battery assembly 4 is connected to the upper part of the second housing 2 via a detachable connection structure 5, such as a snap-fit, magnetic, or threaded connection. The battery 42 inside the battery housing 41 provides power to the entire earphone. The electrical connector 43 at the bottom of the battery housing 41 passes through a pre-drilled hole at the bottom and achieves precise docking and stable electrical connection with the functional component 3, ensuring efficient and reliable power transmission. The battery cover 44 above the battery 42 can be connected to the battery housing 41 via a snap-fit ​​or threaded connection, facilitating opening and closing and protecting the battery 42 from external physical damage or dust contamination.

[0040] The layered structure design of battery assembly 4 makes the installation, replacement, and maintenance of battery 42 more convenient. Furthermore, when only battery 42 in battery assembly 4 malfunctions and needs replacement, the battery casing 41 can be easily removed or replaced by separating it from the second casing 2 via the detachable connection structure 5, followed by removing the battery cover 44. This simple and efficient operation saves time and effort, enhancing the user's battery maintenance experience.

[0041] Furthermore, as a preferred embodiment of this solution and not a limitation, one side of the second housing 2 is provided with a battery mounting groove 21 that matches the battery housing 41. The battery mounting groove 21 is provided with a through hole 211 for the functional component 3 to pass through and make an electrical connection with the electrical connector 43. The detachable connection structure 5 includes a first magnetic attraction part 51 provided on one side of the second housing 2 and a second magnetic attraction part 52 provided inside the battery housing 41. When the battery assembly 4 is placed into the battery mounting groove 21, the first magnetic attraction part 51 and the second magnetic attraction part 52 attract each other to fix the battery assembly 4.

[0042] In this embodiment, the battery mounting slot 21 on one side of the second housing 2 provides a precise mounting position for the battery assembly 4. The through hole 211 of the battery mounting slot 21 allows the electrical connection structure of the functional component 3 to pass smoothly through the electrical connector 43 of the battery assembly 4 for electrical connection, ensuring stable power and signal transmission.

[0043] The battery housing 41 of the battery assembly 4 is conveniently connected to the second housing 2 via a detachable magnetic connection structure 5. Specifically, when the battery assembly 4 is placed into the battery mounting slot 21, the first magnetic part 51 on one side of the second housing 2 and the second magnetic part 52 inside the battery housing 41 attract each other. The attraction force between the first magnetic part 51 and the second magnetic part 52 is moderate, ensuring that the battery assembly 4 is stably fixed in the battery mounting slot 21 during normal use and will not fall off due to slight shaking or collision. It also allows the user to easily pull the battery assembly 4 out of the battery mounting slot 21 by applying a certain amount of external force when replacing the battery. The design of the battery mounting slot 21 and the through hole 211 makes the connection between the battery assembly 4 and the functional components 3 more regular and orderly, effectively avoiding problems such as unstable connections or short circuits caused by messy wiring, thus improving the electrical safety and reliability of the headphones. At the same time, this structural design also makes the internal layout of the headphones more compact and reasonable, which is conducive to integrating more functions within a limited space, improving the overall performance and functional diversity of the headphones.

[0044] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the first magnetic suction part 51 includes a magnetic suction mounting position 511 disposed on one side of the second housing 2, the magnetic suction mounting position 511 being provided with a first magnetic element 512 matching thereto, and the second magnetic suction part 52 being disposed between the battery housing 41 and the electrical connector 43.

[0045] In this embodiment, the magnetic mounting position 511 on one side of the second housing 2 provides a stable placement space for the first magnetic component 512. The first magnetic component 512 can be a neodymium iron boron magnet, possessing strong magnetism. When the battery case 41 of the battery assembly 4 is inserted into the battery mounting slot 21, the second magnetic part 52, located between the battery case 41 and the electrical connector 43, can be a soft magnetic material patch that attracts the first magnetic component 512. This structural design allows the battery assembly 4 to be accurately positioned and attracted within the battery mounting slot 21, ensuring that the electrical connector 43 can stably connect to the functional component 3 through the through hole 211 of the battery mounting slot 21, guaranteeing the power supply and signal transmission required for the normal operation of the headphones. In daily use, even if the headphones are subjected to a certain degree of shaking or slight impact, the battery assembly 4 can be firmly fixed within the battery mounting slot 21 without displacement or poor contact, thus ensuring the stability and continuity of the headphone function and providing users with an uninterrupted audio experience. For example, when listening to music or answering calls during exercise, there is no need to worry about battery connection issues affecting use. Additionally, the first magnetic component 512, besides fixing the battery assembly 4, can also automatically reposition itself by adsorbing onto the headphone charging case.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the first housing 1 includes a first upper ear shell 11, the first upper ear shell 11 being connected to a first ear rod shell 12, and the second housing 2 includes a second upper ear shell 22 corresponding to the first upper ear shell 11, the second upper ear shell 22 being connected to a second ear rod shell 23 corresponding to the second upper ear shell 22.

[0047] In this embodiment, the first upper ear shell 11 of the first housing 1 has an arc design that conforms to the inner contour of the ear canal. Its material can be a lightweight and resilient polymer plastic, providing good protection for the internal functional components. The first upper ear shell 11 extends downward to connect to the first ear rod shell 12. The first ear rod shell 12 has a slender shape and a smooth surface, making it convenient for users to put on and take off the earphone. At the same time, it can also accommodate some functional components such as the touch motherboard and pressure-sensitive control module, which serves to organize and protect the circuit and realize the touch function.

[0048] Correspondingly, the second upper ear shell 22 of the second housing 2 also has an arc design that matches the first upper ear shell 11. Together, they form a shape that conforms to the ear canal, ensuring the stability of the earphone. The second upper ear shell 22 is connected to the second ear stem shell 23. The second ear stem shell 23 and the first ear stem shell 12 echo each other in form and function. This not only makes it easier for users to operate the earphone, such as by pressing or sliding the ear stem shell to control functions such as answering calls and switching music, but also contributes to the overall structural stability of the earphone. This ensures that the entire earphone maintains good integrity during daily wear, use, and storage, and is less prone to component separation.

[0049] Furthermore, as a preferred embodiment of this solution and not a limitation, the functional component 3 includes a circuit board 31, preferably an FPC board, disposed on one side of the first upper ear shell 11. The circuit board 31 is electrically connected to a control main board 32 disposed between the first ear shell 12 and the second ear shell 23. The circuit board 31 is provided with a spring pin connector 311 that can pass through the through hole 211 and be electrically connected to the electrical connector 43.

[0050] In this embodiment, the circuit board 31 in functional component 3 is preferably a flexible FPC board and is disposed on one side of the first upper ear shell 11. It has good flexibility, can adapt to the limited space layout inside the earphone, and effectively reduce the space occupied. The circuit board 31 is electrically connected to the electrical connector 43 of the battery assembly 4 through a spring-loaded pin connector 311. Due to the elastic design of the spring-loaded pin connector 311, a good electrical connection can be maintained even when the earphone is subjected to slight shaking or vibration, ensuring that the battery stably supplies power to the circuit board 31.

[0051] Circuit board 31 is also electrically connected to control motherboard 32 located between the first earpiece shell 12 and the second earpiece shell 23. Control motherboard 32, as the core control unit of the headphones, integrates key components such as a Bluetooth chip and an audio processing chip. Through its connection to circuit board 31, control motherboard 32 can receive power from battery assembly 4, decode and amplify audio signals received from Bluetooth, and then transmit the processed audio signals to the headphone's speaker unit for high-quality audio playback. Simultaneously, control motherboard 32 can also process signals from various sensors on the headphones, such as touch sensors and accelerometers, enabling intelligent functions such as touch-controlled play / pause and automatic sensing of wearing status.

[0052] Furthermore, as a preferred embodiment of this solution and not a limitation, the battery mounting groove 21 is provided with a positioning part 212 to restrict the rotation of the battery assembly 4, and the battery casing 41 is provided with a positioning groove 411 that matches the positioning part 212.

[0053] In this embodiment, a dedicated positioning part 212 is provided in the battery mounting slot 21 on one side of the second housing 2. This positioning part 212 can be a small protrusion structure with a regular shape and a carefully designed position, such as a cylindrical protrusion located at the inner edge of the battery mounting slot 21. Correspondingly, a positioning groove 411 is provided on the battery shell 41 of the battery assembly 4. The size and shape of the positioning groove 411 match the positioning part 212. When the battery assembly 4 is placed into the battery mounting slot 21, the positioning part 212 is accurately embedded in the positioning groove 411. In this way, the rotation of the battery assembly 4 is effectively restricted. During daily use, even if the headphones shake or twist, the battery assembly 4 can remain firmly in the correct position, ensuring that the battery's electrical connector 43 always maintains precise and stable contact with the spring pin connector 311 of the circuit board 31. This prevents poor contact due to accidental rotation of the battery assembly 4, thus ensuring stable power transmission and unaffected headphone function. On the other hand, this positioning design also makes it convenient for users to replace the battery assembly 4. Due to the matching relationship between the positioning part 212 and the positioning groove 411, when installing a new battery assembly 4, the user can quickly and accurately place the battery assembly 4 in the correct position and complete the installation with this clear positioning guidance, without having to repeatedly adjust the angle of the battery, thus improving the efficiency and convenience of battery replacement.

[0054] Furthermore, as a preferred embodiment of this solution and not a limitation, the outer periphery of the battery cover 44 is provided with anti-slip textures 441. These anti-slip textures 441 can be fine stripe textures or interlaced grid textures. When the user needs to replace the battery, the anti-slip textures 441 increase the friction between the finger and the battery cover 44 when the finger touches the outer periphery of the battery cover 44, thereby facilitating and quickly removing the battery assembly 4 as a whole.

[0055] Furthermore, as a preferred embodiment of this solution and not a limitation, a side groove 412 is provided along the bottom edge of the battery housing 41 for easy assembly, and a side platform 213 is provided at the bottom of the battery mounting groove 21 to mate with and connect to the side groove 412. The mating structure of the side groove 412 and the side platform 213 significantly improves the convenience and accuracy of installing the battery assembly 4, and further enhances the stability of the battery assembly 4 inside the earphone.

[0056] Furthermore, as a preferred embodiment of this solution and not a limitation, an earbud shell 13 is also connected to one side of the first housing 1. Specifically, the connection between the earbud shell 13 and the first housing 1 preferably adopts an embedded snap-fit ​​connection structure. The shape of the earbud shell 13 conforms to the physiological structure of the ear canal to improve the user's comfort when wearing the headphones. At the same time, it can also effectively reduce the interference of external environmental noise, enhance the immersiveness of the audio, and allow the user to hear the details of music, calls, and other sounds more clearly, thereby improving the quality of the audio experience, meeting the user's demand for high-quality audio enjoyment, and further enhancing the product's competitiveness in the market.

[0057] Furthermore, as a preferred embodiment of this solution, and not a limitation thereof, when the battery housing 41 is assembled and fixed with the battery mounting slot 21, the bottom surface of the battery cover 44 abuts against the upper surface of the second housing 2. This structure, where the bottom surface of the battery cover 44 abuts against the upper surface of the second housing 2, effectively improves the fixation of the battery assembly 4 on the earphone. In various daily activities, such as walking, exercising, and using public transportation, even if the earphone is frequently subjected to external forces, the battery assembly 4 can still be firmly in the mounting position, avoiding problems such as audio interruption and unstable Bluetooth connection caused by battery loosening, thus providing users with a continuous, stable, and reliable user experience.

[0058] Working principle of this utility model:

[0059] This invention places the battery assembly at the top of the TWS earbuds, avoiding critical functional areas such as the motherboard. This allows for the integration of advanced features like pressure-sensitive control, multi-microphone call noise reduction, and active noise cancellation within a limited space, enhancing functional completeness and meeting user needs in various scenarios. Furthermore, the battery assembly is detachably connected to the earbud body, eliminating the need to replace the entire earbud if the battery is damaged or malfunctions. Additionally, in outdoor environments or where timely charging is unavailable, replacing the battery assembly extends the earbud's usage time, preventing interruptions due to insufficient power.

[0060] In summary, this invention improves the lifespan, ease of use, and flexibility of TWS earphones through a detachable battery assembly, solving the problem of balancing functional integrity and battery replaceability in traditional TWS earphones.

[0061] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A TWS earphone with a replaceable battery, comprising a first housing (1) and a second housing (2) constituting the main body of the earphone, wherein a functional component (3) is accommodated between the first housing (1) and the second housing (2), characterized in that: The upper part of the second housing (2) is provided with a battery assembly (4), and a detachable connection structure (5) is provided between the second housing (2) and the battery assembly (4). The battery assembly (4) can be electrically connected to the functional component (3).

2. The TWS earphone with a replaceable battery according to claim 1, characterized in that, The battery assembly (4) includes a battery housing (41) detachably connected to the upper part of the second housing (2), a battery (42) is disposed inside the battery housing (41), an electrical connector (43) is provided at the bottom of the battery (42) that can pass through the battery housing (41) and connect to the functional component (3), a battery cover (44) detachably connected to the battery housing (41) is provided above the battery (42), and the detachable connection structure (5) is provided between the battery housing (41) and the upper part of the second housing (2).

3. A TWS earphone with a replaceable battery according to claim 2, characterized in that, The second housing (2) has a battery mounting groove (21) on one side that matches the battery housing (41). The battery mounting groove (21) has a through hole (211) for the functional component (3) to pass through and make an electrical connection with the electrical connector (43). The detachable connection structure (5) includes a first magnetic part (51) on one side of the second housing (2) and a second magnetic part (52) in the battery housing (41). When the battery assembly (4) is placed into the battery mounting groove (21), the first magnetic part (51) and the second magnetic part (52) attract each other to fix the battery assembly (4).

4. A TWS earphone with a replaceable battery according to claim 3, characterized in that, The first magnetic suction part (51) includes a magnetic suction mounting position (511) disposed on one side of the second housing (2), and a first magnetic element (512) matching it is provided on the magnetic suction mounting position (511). The second magnetic suction part (52) is disposed between the battery housing (41) and the electrical connector (43).

5. A TWS earphone with a replaceable battery according to claim 3, characterized in that, The first housing (1) includes a first upper ear shell (11), which is connected to a first ear rod shell (12). The second housing (2) includes a second upper ear shell (22) corresponding to the first upper ear shell (11), which is connected to a second ear rod shell (23) corresponding to the second upper ear shell (22).

6. A TWS earphone with a replaceable battery according to claim 5, characterized in that, The functional component (3) includes a circuit board (31) disposed on one side of the first upper ear shell (11). The circuit board (31) is electrically connected to a control main board (32) disposed between the first ear shell (12) and the second ear shell (23). The circuit board (31) is provided with a spring pin connector (311) that can pass through the through hole (211) and be electrically connected to the electrical connector (43).

7. A TWS earphone with a replaceable battery according to any one of claims 3-6, characterized in that, The battery mounting slot (21) is provided with a positioning part (212) to restrict the rotation of the battery assembly (4), and the battery housing (41) is provided with a positioning slot (411) that matches the positioning part (212).

8. A TWS earphone with a replaceable battery according to any one of claims 2-6, characterized in that, The outer periphery of the battery cover (44) is provided with anti-slip texture (441).

9. A TWS earphone with a replaceable battery according to any one of claims 3-6, characterized in that, A side groove (412) is provided along the bottom edge of the battery casing (41) for easy assembly, and a side platform (213) is provided at the bottom of the battery mounting groove (21) to cooperate with and connect with the side groove (412).

10. A TWS earphone with a replaceable battery according to any one of claims 1-6, characterized in that, An earplug shell (13) is also connected to one side of the first housing (1).

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