A magnetic detachable battery Bluetooth earphone

By combining a magnetically detachable battery design with a power management chip, the problems of insufficient battery life and unstable connection in Bluetooth headsets are solved, enabling quick replacement and efficient charging, thus extending the lifespan and battery life of the headsets.

CN224385664UActive Publication Date: 2026-06-19SHENZHEN ENLE IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN ENLE IND CO LTD
Filing Date
2025-06-16
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing Bluetooth headsets have insufficient battery life. The traditional non-removable battery design means that you have to wait for the battery to run out and then you have to wait for it to be charged. In addition, the connection is unstable and easily damaged, making it difficult to meet the needs of long-term use and increasing maintenance costs.

Method used

It adopts a magnetic detachable battery design, which uses a slot and a magnetic ring to achieve a stable connection between the battery post and the earphone shell. It is equipped with a power management chip to monitor the charging and discharging process, and a spare battery post is set in the charging case to support quick replacement and charging.

Benefits of technology

This allows users to quickly replace batteries when the power is low, extending the earphone's battery life, reducing repair difficulty and economic losses, and improving the user experience and device reliability.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224385664U_ABST
    Figure CN224385664U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of bluetooth headset, and disclose a kind of magnetic attraction type detachable battery's bluetooth headset, including earphone shell, battery column and charging bin.Earphone shell bottom is equipped with clamping groove, magnetic attraction ring and connecting contact, the clamping block of battery column top is engaged with clamping groove, second magnetic attraction ring is engaged with magnetic attraction ring, power contact and connecting contact electrically connected, realize quick disassembly and power supply, spare battery column is equipped in charging bin, can be charged for earphone and battery column at any time, significantly improve endurance capability, compared with traditional bluetooth headset, the device is simplified battery replacement process by magnetic attraction type detachable design, user can independently replace battery without professional tool, reduce maintenance difficulty and cost, prolong the service life of earphone, while the linkage design of charging bin and earphone, battery column, flexible adaptation multiple scene, satisfy user long time use demand, reduce resource waste, improve use experience and equipment reliability.
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Description

Technical Field

[0001] This utility model relates to the field of Bluetooth headset technology, specifically to a Bluetooth headset with a magnetically detachable battery. Background Technology

[0002] Bluetooth headphones, as wireless audio devices, connect to playback devices via Bluetooth technology, freeing users from the constraints of traditional wired headphones and greatly improving convenience and flexibility. They are widely used in various scenarios such as daily entertainment, business office work, and sports and fitness. However, with increasing usage time and diversified usage scenarios, the insufficient battery life of Bluetooth headphones has become increasingly prominent. Removable battery designs have emerged to address this issue, allowing users to quickly replace the battery when it is depleted, providing continuous power to the device and effectively solving the battery life problem. This meets users' needs for extended use and has become a key direction for improving the practicality of Bluetooth headphones.

[0003] Most Bluetooth headsets on the market use a built-in, non-removable battery design. This design forces users to wait for the headset to fully recharge after the battery is depleted before they can continue using it, severely impacting usability. Even with charging cases, the limited number of charges is insufficient for extended use in demanding scenarios like long outings. Furthermore, traditional Bluetooth headsets often use soldering or clip-on connections between the battery and the headset body, leading to unstable connections and difficulty in disassembly. This not only increases the difficulty of battery replacement and repair but can also damage the headset due to improper handling. As batteries age, their performance gradually declines, and the non-removable design prevents users from replacing them themselves, ultimately rendering the entire headset unusable due to battery issues, resulting in resource waste and economic losses. Therefore, we propose a Bluetooth headset with a magnetically attached, removable battery. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a Bluetooth headset with a magnetically attached removable battery, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a Bluetooth headset with a magnetically detachable battery, including a headset shell;

[0006] The bottom of the earphone shell is provided with a slot;

[0007] A magnetic ring is embedded at the bottom of the earphone shell near the card slot, and three vertically equidistant connection contacts are provided at the bottom of the earphone shell.

[0008] The earphone shell has a battery post at the bottom, and the top of the battery post has two snap-fit ​​blocks that are distributed in a ring at equal intervals.

[0009] The snap-fit ​​block and the inner wall of the slot are snap-fitted together.

[0010] A second magnetic ring is embedded at the top of the battery column, and the second magnetic ring and the magnetic ring are magnetically attracted to each other.

[0011] The top of the battery column is provided with three equidistant power contacts near the second magnetic ring, and the power contacts are electrically connected to the connecting contacts.

[0012] Preferably, a main board is provided on one side of the inner wall of the earphone shell, and a coil unit is provided on the inner wall of the earphone shell near the main board;

[0013] The coil unit is electrically connected to the main board.

[0014] Preferably, a sound receiving hole is provided on the outer wall of one end of the earphone shell.

[0015] Preferably, a battery groove is formed at one end of the inner wall of the battery column;

[0016] A battery is fixedly installed at one end of the inner wall of the battery compartment;

[0017] The battery column has a charging port at its bottom.

[0018] Preferably, a power management chip is provided at the bottom of the inner wall of the battery compartment;

[0019] The power management chip is electrically connected to the bottom of the battery.

[0020] Preferably, a charging case is also provided below the earphone shell, and the two earphone shells are embedded in one end of the top of the charging case;

[0021] The charging case has a charging slot at the top near the earphone shell, and a partition is provided in the middle of the inner wall of the charging slot;

[0022] Two spare battery posts are embedded on both sides of the bottom of the inner wall of the charging slot, and the outer wall of one side of the spare battery post is electrically connected to the outer wall of one side of the partition.

[0023] Preferably, a magnetic cover is movably connected to one end of the top of the charging compartment;

[0024] The outer wall of one end of the original magnetic cover on the top of the charging compartment is fitted with a magnetic block, and the magnetic block is magnetically engaged with one end of the inner wall of the magnetic cover.

[0025] The charging compartment has a charging port on one end of its outer wall.

[0026] Compared with the prior art, this utility model provides a Bluetooth headset with a magnetically detachable battery, which has the following advantages:

[0027] 1. This Bluetooth headset with a magnetically attached removable battery differs from traditional Bluetooth headsets, which often use built-in, non-removable batteries, resulting in severely limited battery life. Once the battery is depleted, users must wait for a recharge, and the included charging case offers only a limited number of recharges, making it unsuitable for extended outings or long trips. This device features a magnetically attached removable battery post design. When the battery is low, users can quickly remove and replace it with a fully charged post, eliminating the need to wait for recharging. For example, during a full-day hike, traditional headsets might run out of power midway, while this headset can continue playing music and answering calls simply by replacing the battery post, ensuring all-day use. The charging case also includes a spare battery post for on-the-spot recharging, significantly extending the headset's battery life and freeing users from battery anxiety, allowing them to freely enjoy various usage scenarios.

[0028] 2. This magnetically attached Bluetooth headset with a removable battery differs from traditional Bluetooth headsets where the battery is often welded or connected to the main body using complex clips, making disassembly complicated and requiring specialized tools and skills. Improper handling can easily damage the internal structure of the headset, increasing repair costs. In contrast, this device uses a slot and magnetic ring to connect the battery post to the headset shell. The locking block engages with the slot, and the magnetic ring attracts the second magnetic ring, making installation and disassembly simple and convenient. Ordinary users can easily replace the battery post without specialized skills. When battery performance deteriorates or malfunctions, users can easily replace the battery post themselves, preventing the entire headset from being rendered unusable due to battery issues. This reduces repair difficulty and economic losses, extends the overall lifespan of the headset, and reduces resource waste.

[0029] 3. Compared to traditional Bluetooth headsets, this magnetically attached Bluetooth headset with a removable battery lacks effective management and monitoring of the charging process, potentially leading to overcharging and over-discharging, which can affect battery life and performance. This device features a power management chip at the bottom of the battery slot's inner wall, capable of real-time monitoring of the battery's charging and discharging status and precise management and control of the process. For example, when the battery is nearing full charge, the power management chip automatically adjusts the charging current to prevent overcharging; during discharging, it also ensures stable power output. Simultaneously, the integrated charging design of the charging case, headset, and battery slot makes the charging process more orderly and efficient, ensuring battery safety and stable device operation, further enhancing the user experience and device reliability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a cross-sectional view of the earphone shell of this utility model;

[0032] Figure 3 This is a schematic diagram of the bottom of the earphone shell of this utility model;

[0033] Figure 4 This is a cross-sectional view of the battery column of this utility model.

[0034] In the diagram: 1. Earphone shell; 2. Slot; 3. Magnetic ring; 4. Connecting contact point; 5. Battery post; 6. Snap-fit ​​block; 7. Second magnetic ring; 8. Power contact point; 9. Main board; 10. Coil unit; 11. Microphone hole; 12. Battery slot; 13. Battery; 14. Charging port; 15. Power management chip; 16. Charging case; 17. Charging slot; 18. Divider; 19. Spare battery post; 20. Magnetic top cover; 21. Magnetic block; 22. Charging port of charging case. Detailed Implementation

[0035] 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 protection scope of the present utility model.

[0036] Please see Figure 1-4 A Bluetooth headset with a magnetically detachable battery includes a headset housing 1, which serves as the main outer shell of the headset and provides installation space and physical protection for internal electronic components.

[0037] The bottom of the earphone shell 1 is provided with a slot 2, which is used to cooperate with the snap-fit ​​block 6 on the top of the battery post 5 to realize the mechanical connection between the earphone shell 1 and the battery post 5, and ensure that the two are installed firmly.

[0038] A magnetic ring 3 is embedded at the bottom of the earphone shell 1 near the slot 2. Three vertically equidistant connection contacts 4 are provided at the bottom of the earphone shell 1. The magnetic ring 3 attracts the earphone shell 1 by magnetic force, further enhancing the connection stability between the earphone shell 1 and the battery post 5 and preventing accidental detachment. The connection contacts 4 are used to electrically connect with the power contact 8 on the battery post 5 to form a power transmission channel to power the earphone.

[0039] The earphone housing 1 has a battery post 5 at the bottom and two equally spaced ring-shaped locking blocks 6 at the top of the battery post 5. The battery post 5 provides additional battery capacity for the earphone and extends the earphone's battery life. The locking blocks 6 cooperate with the slot 2 to realize the detachable connection between the battery post 5 and the earphone housing 1, making it convenient to replace the battery post 5.

[0040] The snap-fit ​​block 6 and the inner wall of the slot 2 are snap-fitted together. This snap-fitting method makes the connection between the battery post 5 and the earphone shell 1 tight and stable, ensuring that they will not easily separate during use.

[0041] A second magnetic ring 7 is embedded at the top of the battery post 5. The second magnetic ring 7 and the magnetic ring 3 are magnetically attracted to each other, which enhances the connection between the battery post 5 and the earphone shell 1. At the same time, it helps to align the connection contact point 4 and the power contact point 8 to ensure accurate and reliable electrical connection.

[0042] Three equidistant power contacts 8 are provided at the top of the battery post 5 near the second magnetic ring 7. The power contacts 8 are electrically connected to the connection contact 4. After the power contacts 8 and the connection contact 4 are connected, the power of the battery 13 in the battery post 5 can be transmitted to the main board 9 and other components in the headphone shell 1 to realize the function of powering the headphone.

[0043] A main board 9 is provided on one side of the inner wall of the earphone shell 1, and a coil unit 10 is provided on the inner wall of the earphone shell 1 near the main board 9. The main board 9 is the core control component of the earphone, responsible for processing audio signals and controlling the operation of various functional modules. The coil unit 10 is electrically connected to the main board 9 to realize wireless charging function and wireless transmission of audio signals, etc.

[0044] The coil unit 10 is electrically connected to the motherboard 9. Through this electrical connection, the motherboard 9 can control the coil unit 10 to work, enabling functions such as receiving and converting electrical energy during wireless charging, as well as electromagnetic conversion of audio signals.

[0045] The outer wall of one end of the earphone shell 1 has a sound receiving hole 11, which is used to collect external sound, enabling the earphone to realize functions such as voice calls and voice control, allowing users to interact with the earphone through voice.

[0046] A battery groove 12 is provided at one end of the inner wall of the battery column 5. The battery groove 12 is used to install the battery 13, providing a fixed installation position for the battery 13 and protecting the battery 13 from external impact.

[0047] A battery 13 is fixedly installed on one end of the inner wall of the battery slot 12. The battery 13 serves as the energy storage core of the battery column 5, storing electrical energy and providing the power required for the headphones to work, thus ensuring the normal operation of the headphones.

[0048] The bottom of the battery column 5 is provided with a charging port 14, which is used to connect an external charging device to charge the battery 13 inside the battery column 5, making it convenient for users to replenish the power of the battery column 5.

[0049] A power management chip 15 is provided at the bottom of the inner wall of the battery compartment 12. The power management chip 15 manages and monitors the charging and discharging process of the battery 13, protects the battery 13, extends the battery life, and ensures stable power output.

[0050] The power management chip 15 is electrically connected to the bottom of the battery 13. Through this electrical connection, the power management chip 15 can monitor the status of the battery 13 in real time, control the charging and discharging process of the battery 13, and ensure the safe and stable operation of the battery 13.

[0051] Below the earphone shell 1, there is also a charging case 16. The two earphone shells 1 are embedded in the top end of the charging case 16. The charging case 16 is used to store and charge the earphones and battery posts 5, providing a centralized charging place for the earphones and battery posts 5, which is convenient for users to manage and carry.

[0052] The charging case 16 has a charging slot 17 at the top near the earphone shell 1. A partition 18 is provided in the middle of the inner wall of the charging slot 17. The charging slot 17 provides a charging place for the earphone and the battery post 5. The partition 18 separates the charging slot 17, making it easy to distinguish between the earphone and the battery post 5, and at the same time, it allows for a reasonable layout of the charging circuit.

[0053] Two spare battery posts 19 are embedded on both sides of the bottom of the inner wall of the charging slot 17. The outer wall of one side of the spare battery post 19 is electrically connected to the outer wall of one side of the partition 18. The spare battery post 19 can be charged simultaneously when the charging case 16 is charging. When the user needs to replace the battery post 5, a fully charged spare battery post is provided to further extend the earphone's battery life. It is electrically connected to the partition 18 to realize the charging function of the charging case 16 to charge the spare battery post 19.

[0054] A magnetic cover 20 is movably connected to one end of the top of the charging case 16. The magnetic cover 20 is used to seal the charging case 16, prevent dust and foreign objects from entering the interior of the charging case 16, protect the earphones and battery posts 5, and also serve as a storage and protection function when not in use.

[0055] The outer wall of the original magnetic cover 20 on the top of the charging compartment 16 is fitted with a magnetic block 21. The magnetic block 21 and the inner wall of the magnetic cover 20 are magnetically engaged. The magnetic engagement between the magnetic block 21 and the magnetic cover 20 allows the magnetic cover 20 to be tightly closed on the charging compartment 16, making opening and closing operations convenient and ensuring a sealing effect.

[0056] The charging case 16 has a charging port 22 on one end of its outer wall. The charging port 22 is used to connect to an external power source to charge the charging case 16 and its internal earphones and battery posts 5. It is the interface for the charging case 16 to obtain power.

[0057] Instructions for use

[0058] Working Principle: First, the latching block 6 at the top of the battery post 5 engages with the latching slot 2 at the bottom of the earphone shell 1, securing the battery post 5 firmly to the bottom of the earphone shell 1. Simultaneously, the second magnetic ring 7 at the top of the battery post 5 magnetically attracts the magnetic ring 3 at the bottom of the earphone shell 1, further enhancing the connection stability. In this state, the energizing contact 8 at the top of the battery post 5 is electrically connected to the connecting contact 4 at the bottom of the earphone shell 1, forming a current path. The electrical energy stored in the battery 13 in the battery slot 12 within the battery post 5, after being regulated by the power management chip 15, is transmitted to the main board 9 inside the earphone shell 1 through the energizing contact 8 and the connecting contact 4, supplying power to the main board 9 and related components, ensuring the normal operation of the earphone, such as audio playback and signal reception. The main board 9, as the control core of the earphone, is electrically connected to the coil unit 10. When the earphone needs wireless charging or to receive audio signals, the main board 9 controls the coil unit 10 to operate. For example, during wireless charging, the coil unit 10 receives external electromagnetic signals and converts them into electrical energy, which is then transmitted to the motherboard 9. The motherboard 9 then distributes the energy to other components or uses it for battery charging. In terms of audio signal processing, the motherboard 9 transmits the received audio signals to the coil unit 10. Through the electromagnetic conversion of the coil unit 10, the electrical signals are converted into sound signals, which are then played out by the earphone's sound unit. Furthermore, the sound-collecting hole 11 on one end of the outer wall of the earphone shell 1 is used to collect external sounds. After the sound signal is transmitted through the sound-collecting hole 11, it is processed by the relevant audio receiving components and transmitted to the motherboard 9. The motherboard 9 analyzes and processes the signal to achieve voice pickup, calls, etc. When it is necessary to charge the earphones and battery posts, the two earphone shells 1 are embedded into the charging slot 17 at the top of the charging case 16. The spare battery posts 19 on both sides of the bottom of the inner wall of the charging slot 17 contact the connection contacts 4 at the bottom of the earphone shell 1. At the same time, one side of the outer wall of the spare battery post 19 is electrically connected to one side of the outer wall of the partition 18, thus forming a charging circuit between the power supply in the charging case 16 and the earphones and battery posts. When the charging case 16 is connected to an external power source via the charging port 22 on its outer wall, current is transmitted through the internal circuitry of the charging case to the backup battery post 19, and then through the connecting contact 4 and the power contact 8 to the battery 13 inside the battery post 5, charging the battery 13. Simultaneously, current can also power other components inside the earphone shell 1 that require charging via the motherboard 9. Furthermore, the magnetic cover 20 on the top of the charging case 16 opens and closes through magnetic engagement with the magnetic block 21. When the magnetic cover 20 is closed, it protects the earphones and battery post inside the charging case, preventing dust and foreign objects from entering, and also enhances the stability of the charging process to some extent. Through the engagement of the slot 2 and the connecting block 6, and the magnetic engagement of the magnetic ring 3 and the second magnetic ring 7, the battery post 5 can be easily detached from or installed on the earphone shell 1. When the battery post 5 is low on power, the user can remove it and replace it with a fully charged battery post, thereby quickly extending the earphone's battery life.The spare battery post 19 inside the charging case 16 can charge the battery post while the charging case is charging, keeping the spare battery post fully charged so that users can replace it at any time. This detachable design and spare battery post in the charging case, through the linkage between various structures, enables flexible expansion of the earphone's battery life and convenient charging, meeting users' needs for earphone battery life in different usage scenarios.

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Bluetooth earphone with magnetic detachable battery, characterized in that, include: Earphone shell (1); The bottom of the earphone shell (1) is provided with a slot (2); A magnetic ring (3) is embedded at the bottom of the earphone shell (1) near the card slot (2), and three vertically equidistant connection contacts (4) are provided at the bottom of the earphone shell (1). The earphone housing (1) is provided with a battery post (5) at the bottom, and the battery post (5) is provided with two snap-fit ​​blocks (6) arranged in a ring at equal intervals at the top. The snap-fit ​​block (6) and the inner wall of the slot (2) are snap-fitted together; The top of the battery column (5) is provided with a second magnetic ring (7), and the second magnetic ring (7) and the magnetic ring (3) are magnetically attracted to each other; The top of the battery column (5) is provided with three equidistant power contacts (8) near the second magnetic ring (7), and the power contacts (8) are electrically connected to the connecting contact (4).

2. A Bluetooth headset with a magnetically detachable battery according to claim 1, characterized in that: The earphone housing (1) has a main board (9) on one side of its inner wall, and a coil unit (10) is provided on the inner wall of the earphone housing (1) near the main board (9). The coil unit (10) is electrically connected to the main board (9).

3. A Bluetooth headset with a magnetically detachable battery according to claim 1, characterized in that: The earphone housing (1) has a sound receiving hole (11) on one end of its outer wall.

4. A Bluetooth headset with a magnetically detachable battery according to claim 1, characterized in that: A battery groove (12) is provided at one end of the inner wall of the battery column (5); A battery (13) is fixedly installed on one end of the inner wall of the battery compartment (12). The battery post (5) has a charging port (14) at its bottom.

5. A Bluetooth headset with a magnetically detachable battery according to claim 4, characterized in that: A power management chip (15) is provided at the bottom of the inner wall of the battery compartment (12). The power management chip (15) is electrically connected to the bottom of the battery (13).

6. A Bluetooth headset with a magnetically detachable battery according to claim 1, characterized in that: A charging case (16) is also provided below the earphone shell (1), and the two earphone shells (1) are embedded in one end of the top of the charging case (16); The charging case (16) has a charging slot (17) at the top near the earphone shell (1), and a partition (18) is provided in the middle of the inner wall of the charging slot (17). Two spare battery posts (19) are embedded on both sides of the bottom of the inner wall of the charging slot (17). The outer wall of one side of the spare battery post (19) is electrically connected to the outer wall of one side of the partition (18).

7. A Bluetooth headset with a magnetically detachable battery according to claim 6, characterized in that: A magnetic cover (20) is movably connected to one end of the top of the charging compartment (16). The charging compartment (16) originally had a magnetic block (21) embedded in the outer wall of one end of the magnetic cover (20) at the top. The magnetic block (21) and the inner wall of the magnetic cover (20) are magnetically engaged. The charging compartment (16) has a charging port (22) on one end of its outer wall.