Earphone charging box, wireless earphone and earphone kit

Abstract

The invention relates to the technical field of wearable equipment, in particular to an earphone charging box, a wireless earphone and an earphone suite, the earphone charging box is provided with a removable standby battery, and the standby battery can be connected with the wireless earphone; the earphone charging box has a standby battery energy complementing state, and in the standby battery energy complementing state, the standby battery can be connected with the wireless earphone and supplies energy to a body battery of the wireless earphone. The invention mainly aims to provide an earphone charging box, and aims to solve the problem that the use state of an earphone is interrupted due to use clearance caused by replacement of a battery of the earphone.

Description

Technical Field

[0001] This invention relates to the field of wearable device technology, and in particular to an earphone charging case, wireless earphones, and earphone kit. Background Technology

[0002] True wireless earbuds (TWS earbuds) are earbuds that do not require traditional physical cables. They typically connect to smart devices such as smartphones and tablets via Bluetooth to play sound for the user. These wireless earbuds rely solely on their own built-in battery for power, as the lack of a physical cable prevents them from recharging while in use.

[0003] In related technologies, to prevent wireless earbuds from becoming unusable due to insufficient battery power during extended calls, live broadcasts, or meetings, the charging case is equipped with a backup battery. When the main battery is low, the backup battery replaces it, ensuring the earbuds' continued usability. However, the need to replace the battery still causes interruptions in earbud use, leading to issues such as lost meeting information and missed calls. Summary of the Invention

[0004] The main objective of this invention is to provide an earphone charging case that addresses the issue of interrupted earphone use due to battery replacement requirements.

[0005] To achieve the above objectives, the present invention provides an earphone charging case for powering wireless earphones. The wireless earphones have a main battery, and the earphone charging case has a removable backup battery that can be connected to the wireless earphones. The earphone charging case has a backup battery charging state, in which the backup battery can connect to the wireless earphones and power the main battery of the wireless earphones.

[0006] In one embodiment of the present invention, a spare battery module is provided at the corner of the earphone charging case, and the spare battery is disposed in the spare battery module.

[0007] In one embodiment of the present invention, the backup battery module includes a backup battery outlet and a backup battery compartment. The backup battery outlet is located on the outer side of the corner of the charging box body, and the backup battery compartment is located on the inner side of the backup battery outlet and away from the outer side of the charging box body.

[0008] In one embodiment of the present invention, the cross-section of the backup battery outlet gradually increases from the direction of proximity to the backup battery compartment to the direction of distance from the backup battery compartment.

[0009] In one embodiment of the present invention, the earphone charging case further includes a charging limiting protrusion located at the bottom of the spare battery compartment; the end face of the spare battery has a limiting edge, the limiting edge protruding along the outer edge of the spare battery, the limiting edge and the end face of the spare battery forming a limiting groove, and the charging limiting protrusion engaging with the limiting groove.

[0010] In one embodiment of the present invention, the charging limiting protrusion is provided with a first magnetic attraction structure, the first magnetic attraction structure being located at the end of the charging limiting protrusion facing away from the bottom of the spare battery compartment; the spare battery is provided with a second magnetic attraction structure, the second magnetic attraction structure being located at the end face of the spare battery having the limiting edge; the first magnetic attraction structure and the second magnetic attraction structure are magnetically fixed together.

[0011] In one embodiment of the present invention, the charging limiting protrusion is further provided with a first charging contact, the first charging contact being located at the end of the charging limiting protrusion facing away from the bottom of the spare battery compartment, and the first charging contact being offset from the first magnetic attraction structure; the spare battery is provided with a second charging contact, the second charging contact being located at the end face of the spare battery having the limiting edge, and the second charging contact being offset from the second magnetic attraction structure; the second charging contact can be electrically connected to the first charging contact.

[0012] In one embodiment of the present invention, the earphone charging case further includes a retaining protrusion, which is retractably disposed on the wall of the spare battery compartment and abuts against the spare battery so that the spare battery and the spare battery compartment are in an interference fit.

[0013] The present invention also proposes a wireless earphone, which is applied to an earphone charging case as described in any of the above-mentioned embodiments. The wireless earphone is provided with a main battery and can be electrically connected to a backup battery of the earphone charging case. The wireless earphone has a power replenishment state, in which the wireless earphone is connected to the backup battery and the backup battery can replenish the main battery.

[0014] The present invention also proposes an earphone kit, the earphone kit comprising an earphone charging case as described in any one of the above descriptions and the wireless earphones described above.

[0015] In this technical solution, the earphone charging case proposed by the present invention has a removable spare battery. The spare battery can connect to the wireless earphone and function as the main battery of the wireless earphone. Thus, before each use, the wireless earphone can be lifted and the spare battery installed. The spare battery replenishes the power of the wireless earphone in use in real time, ensuring that the earphone will not experience interruption of use due to the need to replace the battery during each use. This avoids the problem of users experiencing usage gaps due to the need to replace the battery during urgent meetings or calls, and solves the problem of lost meeting information and missed call content caused by usage gaps, thereby improving user experience and reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the earphone charging case provided by the present invention; Figure 2 A schematic diagram of the structure of an embodiment of the charging case body provided by the present invention; Figure 3 A schematic diagram of a structure of an embodiment of the charging limiting protrusion provided by the present invention; Figure 4 This is a schematic diagram illustrating the interaction between the backup battery and the wireless earphone provided by the present invention. Figure 5 This is a schematic diagram of the structure of an embodiment of the wireless earphone provided by the present invention.

[0018] Explanation of icon numbers: 100. Earphone charging case; 10. Spare battery; 101. Second magnetic structure; 102. Second charging contact; 103. Anti-slip protrusion; 104. Limiting edge; 11. Charging case body; 11a. Spare battery module; 11a1. Spare battery outlet; 11a2. Spare battery compartment; 12. Charging limiting protrusion; 121. First magnetic structure; 122. First charging contact; 13. Pressing protrusion; 14. Earphone flip cover; 200. Wireless earphones; 20. Third magnetic structure; 21. Third charging contact; 1000. Earphone kit.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this invention is 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 meaning of "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 a person 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 invention.

[0023] In existing technology, to ensure that the wireless headset 200 does not run out of power during prolonged use, the main battery of the wireless headset 200 is usually designed to be removable. When the main battery runs out of power, the user needs to replace it with a spare battery 10 to continue using the wireless headset 200. However, because the battery needs to be replaced, there will be interruptions in the use of the headset during each use. In situations such as urgent meetings or calls with important content, the need to replace the battery prevents the user from continuing to use the headset to listen to the relevant content, resulting in missed content. At the same time, the need to replace the battery inevitably distracts the user, resulting in incomplete content recording.

[0024] To address the above problems, the main objective of this invention is to provide an earphone charging case 100 that solves the problem of interrupted earphone use due to battery replacement.

[0025] To achieve the above objectives, please refer to Figure 1 and Figure 4The earphone charging case 100 proposed in this invention is used to power the wireless earphone 200. The wireless earphone 200 is equipped with a main battery, and the earphone charging case 100 is equipped with a removable backup battery 10. The backup battery 10 can be connected to the wireless earphone 200. The earphone charging case 100 has a backup battery replenishment state. In the backup battery replenishment state, the backup battery 10 is connected to the wireless earphone 200 in use and supplies power to the main battery.

[0026] It should be explained that the earphone charging case 100 proposed in this invention can not only use the backup battery 10 to charge and replenish the wireless earphones 200, but also has an earphone charging case. When the wireless earphones 200 are placed in the earphone charging case, the charging case battery corresponding to the earphone charging case can charge and replenish the wireless earphones 200.

[0027] Specifically, the earphone charging case 100 proposed in this invention has a removable spare battery 10. In one embodiment, the spare battery 10 is placed inside the earphone charging case 100, and the placement position of the spare battery 10 and the placement position of the wireless earphone 200 inside the earphone charging case 100 can be located at the same end of the earphone charging case 100. That is, the earphone charging case 100 has only one flip cover. After the user opens the flip cover, the earphone and the spare battery 10 are exposed simultaneously, thereby allowing the user to remove the earphone and the spare battery 10. Alternatively, the spare battery 10 is placed inside the earphone charging case 100, and the placement position of the spare battery 10 and the placement position of the wireless earphone 200 inside the earphone charging case 100 can be located at the same end of the earphone charging case 100. The wireless earphones 200 can be placed in the earphone charging case 100 at both ends of the earphone charging case 100. That is, the earphone charging case 100 has two flip covers: one is an earphone flip cover 14 for covering the earphones, and the other is a battery flip cover for covering the spare battery 10. By placing the spare battery 10 and the wireless earphones 200 in the earphone charging case 100 at both ends of the earphone charging case 100, the volume of the earphone charging case 100 can be fully utilized, and the internal circuit components of the earphone charging case 100 can be avoided from being concentrated at one end of the earphone charging case 100. This facilitates heat dissipation, circuit planning, etc.

[0028] The earphone charging case 100 has a charging interface, a mainboard electrically connected to the charging interface, and a power management circuit and battery protection board on the mainboard. When the charging interface is plugged in with a charging cable, the circuit sequentially passes through the external power supply, the charging interface, the power management circuit on the mainboard, and the battery protection board to the charging case battery. When the wireless earphones 200 are placed in the earphone charging case 100 for charging, the circuit sequentially passes through the charging case battery, the battery protection board, the mainboard, the charging case contacts, the earphone contacts, and the internal charging management of the wireless earphones 200 to the earphone battery. Similarly, when the spare battery 10 is placed in the earphone charging case 100 for charging, depending on the different circuit configurations of the earphone charging case 100, there can be two circuit paths: the first is that when the charging interface is plugged in with a charging cable, the current sequentially passes through the external power supply, the charging interface, the power management circuit on the mainboard, and the battery protection board to the charging case battery. The circuit path connects the external power supply, charging interface, power management circuit on the motherboard, and battery protection board to the charging case battery. Subsequently, the charging case battery serves as the power source, and the circuit sequentially passes through the charging case battery, battery protection board, discharge management circuit on the motherboard, dedicated contacts of backup battery 10, contacts of backup battery 10, and internal charging management of backup battery 10 to backup battery 10. The second circuit path is that when the charging interface is plugged in with a charging cable, the current provided by the external power supply is divided into at least two paths after passing through the power management circuit on the motherboard: one path charges the charging case battery according to the aforementioned path; the other path directly charges and replenishes the backup battery 10 through the dedicated charging circuit of backup battery 10 on the motherboard, dedicated contacts of backup battery 10, contacts of backup battery 10, and internal charging management of backup battery 10.

[0029] The earphone charging case has a backup battery charging state. In the backup battery charging state, the backup battery 10 is removed from the earphone charging case 100 and installed in the wireless earphone 200. In this way, the backup battery 10 can charge the main battery of the wireless earphone 200. Specifically, the circuit sequentially passes through the backup battery 10, the internal protection board of the backup battery 10, the output contacts of the backup battery 10, the external power supply contacts of the wireless earphone 200, the internal charging management circuit of the wireless earphone 200, the protection board of the main battery, and finally to the main battery of the wireless earphone 200. In this way, the backup battery 10 can charge and replenish the main battery of the wireless earphone 200.

[0030] In a meeting scenario, the user roughly knows the meeting duration T1 based on the meeting requirements. However, the main battery of the wireless headset 200, due to insufficient charging, only supports a duration T2, which is less than or equal to T1. To avoid issues such as insufficient main battery power during the meeting, the user connects the spare battery 10 to the wireless headset 200, which is already connected to an external device, before the meeting begins. At this time, the spare battery 10 is electrically connected to the main battery of the wireless headset 200 via contact charging, thereby charging and powering the main battery and extending the usage time of the wireless headset 200. This solves the problem of needing to replace the battery or experiencing interruption of use during the use of the wireless headset 200, and avoids issues such as lost meeting information or missed calls due to usage gaps, thus improving user experience and reliability.

[0031] In this technical solution, the earphone charging case 100 proposed by the present invention has a removable spare battery 10. The spare battery 10 can connect to the wireless earphone 200 and function as the main battery of the wireless earphone 200. Thus, before each use, the wireless earphone 200 can be lifted and the spare battery 10 can be inserted. The spare battery 10 can replenish the power of the wireless earphone 200 in real time while it is in use, ensuring that the earphone will not be interrupted due to the need to replace the battery during each use. This avoids the problem of users having to replace the battery when facing urgent meetings or calls, thus solving the problem of lost meeting information and missed call content due to the interruption of use, improving user experience and reliability.

[0032] In another embodiment, please refer to Figure 1 The earphone charging case has an exposed backup battery module 11a at one corner, and the backup battery 10 is located in the backup battery module 11a.

[0033] In this embodiment, the earphone charging case includes a charging case body and a backup battery module 11a. The charging case body is the box structure of the earphone charging case, forming an earphone charging compartment and a backup battery module. The earphone charging compartment is used to charge and replenish the wireless earphones inside the earphone charging compartment. The backup battery module is located at the corner of the charging case body and is exposed to the charging case body. Specifically, the backup battery module 11a and the wireless earphones 200 are respectively located at both ends of the earphone charging case 100. At the same time, the backup battery module 11a is located at the corner of the earphone charging case 100. When the backup battery 10 is located in the backup battery module 11a, the backup battery 10 is directly exposed to the charging case body 11. The backup battery module 11a serves as a battery storage and retrieval channel for the backup battery 10. Its opening is directly exposed on the outer shell of the charging case. Users do not need to open any cover structure and can directly take out or put in the backup battery 10 by sliding, thereby shortening the retrieval time of the backup battery 10. The backup battery module 11a can be designed as a cylindrical slot to match the sliding operation of the backup battery 10. The shell of the backup battery 10 can be made of the same or different high-hardness, wear-resistant plastic or metal material as the charging case body 11, and the surface can have an anti-slip texture. By setting the exposed backup battery module 11a at the corner of the charging case body 11, the backup battery 10 can be quickly and independently accessed. Users can take out the backup battery 10 in a very short time in any state, which greatly improves the response speed and operational convenience to meet emergency power replenishment needs. At the same time, placing the backup battery module 11a and the wireless earphone 200 into the charging case body 11 at both ends of the earphone charging case 100 can optimize the overall spatial layout and structural strength of the charging case body 11. Placing the backup battery 10 in the corner, a structurally strong area, can make full use of the dead space, making the internal circuit layout more regular and potentially improving the overall pressure and drop resistance of the charging case. Furthermore, the independent sliding slot design avoids linkage with the earphone flip cover 14, and simplifies the user's operation logic by allowing the backup battery 10 to be used and retrieved immediately.

[0034] Further, please refer to Figure 2 The backup battery module 11a includes a backup battery outlet 11a1 and a backup battery compartment 11a2. The backup battery outlet 11a1 is located on the outer side of the corner of the charging box body 11, and the backup battery compartment 11a2 is located on the inner side of the backup battery outlet 11a1 and away from the outer side of the charging box body 11.

[0035] In this embodiment, the backup battery module 11a includes a backup battery outlet 11a1 and a backup battery compartment 11a2. The backup battery outlet 11a1 is connected to the backup battery compartment 11a2 and is located on the outer wall of the corner of the charging box body 11, with openings on both sides to allow the user's fingers or fingertips to reach into the backup battery outlet 11a1 and touch the backup battery 10 stored in the backup battery compartment 11a2. The backup battery compartment 11a2 is a cavity or track connected to the backup battery outlet 11a1, extending from the backup battery outlet 11a1 into the interior of the charging box body 11. The shape of the backup battery compartment 11a2 is adapted to the outer contour of the backup battery 10 to accommodate and constrain the backup battery 10. When the backup battery 10 is fully pushed into and placed in the backup battery compartment 11a2, the metal contacts of the backup battery 10 contact the contacts inside the backup battery compartment 11a2, allowing charging / discharging. When a user needs to push the spare battery 10 from the spare battery outlet 11a1 with their finger, the spare battery 10 can move outward along the trajectory of the spare battery compartment 11a2 until it is taken out from the compartment opening of the spare battery compartment 11a2.

[0036] In one embodiment of the present invention, please refer to Figure 2 The cross-section of the backup battery outlet 11a1 gradually increases from the direction closest to the backup battery compartment 11a2 to the direction furthest from the backup battery compartment 11a2.

[0037] In this embodiment, the cross-section of the backup battery outlet 11a1 gradually increases from the direction near the backup battery compartment 11a2 to the direction away from the backup battery compartment 11a2. That is, the opening of the backup battery outlet 11a1 for inserting a finger is larger, and the opening of the backup battery outlet 11a1 for the finger to contact the backup battery 10 is smaller. In this way, the large opening of the backup battery outlet 11a1 facilitates the insertion of a finger, and the small opening of the backup battery outlet 11a1 helps the user to apply force more concentratedly in a predetermined direction when pushing the backup battery 10, thereby smoothly pushing the battery out of the limiting groove.

[0038] To improve the stability of the backup battery 10 on the charging case body 11, please refer to Figure 1 and Figure 3 The earphone charging case 100 also includes a charging limiting protrusion 12, which is located at the bottom of the spare battery compartment 11a2. The end face of the spare battery 10 has a limiting edge 104, which protrudes along the outer edge of the spare battery 10. The limiting edge 104 and the end face of the spare battery 10 enclose a limiting groove, and the charging limiting protrusion 12 is inserted into the limiting groove.

[0039] In this embodiment, the charging limiting protrusion 12 is disposed on the inner wall of the bottom of the backup battery compartment 11a2, and is one or more block-shaped or columnar structures protruding in the compartment space; on the corresponding end face of the backup battery 10, there is a limiting edge 104 that protrudes along its outer edge, and the limiting edge 104 and the end face of the backup battery 10 together form a recessed area, namely the limiting groove.

[0040] When the user fully pushes the spare battery 10 into the spare battery compartment 11a2, the charging limiting protrusion 12 on the charging box body 11 aligns with the limiting groove on the end face of the spare battery 10 and completes the insertion engagement. At this time, the protrusion structure is embedded in the spare battery compartment 11a2 of the spare battery 10. Thus, when the spare battery 10 is placed in the charging box body 11, the insertion engagement of the charging limiting protrusion 12 and the limiting groove can prevent the spare battery 10 from shifting or loosening in the spare battery compartment 11a2. Especially when subjected to external vibration or shaking, it can prevent the spare battery 10 from having poor contact or disconnecting from the charging contacts in the groove.

[0041] Further, please refer to Figure 3 and Figure 4 The charging limiting protrusion 12 is provided with a first magnetic structure 121, which is located at the end of the charging limiting protrusion 12 facing away from the bottom of the spare battery compartment 11a2; the spare battery 10 is provided with a second magnetic structure 101, which is located at the end face of the spare battery 10 with the limiting edge 104; the first magnetic structure 121 and the second magnetic structure 101 are magnetically fixed together.

[0042] In this embodiment, the connection between the charging limiting protrusion 12 and the backup battery 10 is further improved by magnetic attraction. Specifically, a first magnetic attraction structure 121 is provided at the end of the charging limiting protrusion 12 facing away from the bottom of the backup battery compartment 11a2 (i.e., the contact surface facing the backup battery 10), and a second magnetic attraction structure 101 is provided at a corresponding position on the end face of the backup battery 10 with the limiting edge 104.

[0043] The first magnetic attraction structure 121 and the second magnetic attraction structure 101 are made of permanent magnets or ferromagnetic materials. When the first magnetic attraction structure 121 is the N pole, the second magnetic attraction structure 101 is the S pole; when the first magnetic attraction structure 121 is the S pole, the second magnetic attraction structure 101 is the N pole. When the user puts the spare battery 10 into the spare battery compartment 11a2 and makes the charging limiting protrusion 12 and the limiting groove of the spare battery 10 fit together, the first magnetic attraction structure 121 and the second magnetic attraction structure 101 also move closer to each other at the same time. In this way, through the attraction of opposite magnetic poles, the spare battery 10 is attracted and fixed on the charging limiting protrusion 12.

[0044] Thus, based on the mechanical plug-in connection, the magnetic attraction of the first magnetic structure 121 and the second magnetic structure 101 provides an additional holding force for the backup battery 10 in the charging position. This helps to ensure that the backup battery 10 is in close contact with the charging contacts and further prevents the backup battery 10 from coming loose from the limiting groove when the charging box is accidentally shaken or vibrated.

[0045] To ensure the connection stability between the wireless earphone 200 and the backup battery 10, a third magnetic structure 20 is provided at the end of the wireless earphone 200. When the second magnetic structure 101 is the N pole, the third magnetic structure 20 is the S pole; when the second magnetic structure 101 is the S pole, the third magnetic structure 20 is the N pole. In this way, the backup battery 10 can be stably installed in the wireless earphone 200 by magnetic fixation, which can quickly improve the assembly efficiency between the two and reduce the installation time of the backup battery 10.

[0046] In one embodiment of the present invention, please refer to Figure 3 and Figure 4 The charging limiting protrusion 12 is also provided with a first charging contact 122. The first charging contact 122 is located at the end of the charging limiting protrusion 12 facing away from the bottom of the spare battery compartment 11a2. The first charging contact 122 is offset from the first magnetic attraction structure 121. The spare battery 10 is provided with a second charging contact 102. The second charging contact 102 is located on the end face of the spare battery 10 with the limiting edge 104. The second charging contact 102 is offset from the second magnetic attraction structure 101. The second charging contact 102 can be electrically connected to the second charging contact 102.

[0047] In this embodiment, at the end of the charging limiting protrusion 12 facing away from the bottom of the backup battery compartment 11a2, in addition to the first magnetic structure 121, a first charging contact 122 is also provided. The first charging contact 122 and the first magnetic structure 121 are staggered on the plane of the end and do not overlap. Correspondingly, on the end face of the backup battery 10 with the limiting edge 104, in addition to the second magnetic structure 101, a second charging contact 102 is also provided. The second charging contact 102 and the second magnetic structure 101 are also staggered on the end face.

[0048] When the user pushes the spare battery 10 into the spare battery compartment 11a2 and inserts the charging limiting protrusion 12 into the limiting slot of the spare battery 10, the first magnetic attraction structure 121 and the second magnetic attraction structure 101 attract each other and are fixed in place. Simultaneously, the first charging contact 122 and the second charging contact 102 align and make contact, thus establishing an electrical connection. In this way, the electrical connection function of charging and the mechanical magnetic fixing function are integrated on the same mating surface. At the same time, the staggered arrangement physically isolates the two, avoiding mutual interference. The magnetic attraction structure helps ensure a tight fit between the two end faces, thereby guaranteeing the stability and reliability of the charging contact. The charging current is transmitted through these mating contacts.

[0049] To ensure electrical connection between the wireless earphone 200 and the backup battery 10, a third charging contact 21 is provided on the end face of the wireless earphone 200 where the third magnetic structure is located. When the backup battery 10 is installed on the wireless earphone 200, the second magnetic structure 101 and the third magnetic structure 20 attract each other to secure it. At the same time, the second charging contact 102 and the third charging contact 21 are aligned and make contact to establish an electrical connection, so that the backup battery 10 can charge and replenish the main battery in the wireless earphone 200.

[0050] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 The earphone charging case 100 also includes a retaining protrusion 13, which is retractably disposed on the wall of the spare battery compartment 11a2. The retaining protrusion 13 abuts against the spare battery 10 so that the spare battery 10 and the spare battery compartment 11a2 are interference-fitted.

[0051] In this embodiment, a spring is provided on the charging box body 11 corresponding to the position of the groove wall of the spare battery compartment 11a2. One end of the abutting protrusion 13 is connected to the spring, so that the abutting protrusion 13 can extend outward under the elastic force of the spring and can retract into the mounting cavity against the elastic force when squeezed by external force. At the same time, the end face of the abutting protrusion 13 away from the spring and used to contact the spare battery 10 is designed as a bevel or arc surface.

[0052] When the user pushes the backup battery 10 into the backup battery compartment 11a2, the limiting edge 104 at the bottom of the backup battery 10 will contact the inclined or curved surface of the abutment protrusion 13. As it continues to push in, the backup battery 10 applies a force to the abutment protrusion 13 by squeezing the end face of the abutment protrusion 13, causing it to retract into the groove wall. The abutment protrusion 13 then compresses the spring and retracts inward, thereby making room for the battery to pass through and reach the predetermined charging position. Once the battery is fully inserted, the compressed spring tends to release its elasticity, pressing against the protrusion 13 and thus tending to move towards the backup battery 10. The structure of the protrusion 13 extending into the backup battery compartment 11a2 can change the fit between the backup battery compartment 11a2 and the backup battery 10, switching from a clearance fit to an interference fit. This effectively prevents the backup battery 10 from shaking or shifting within the limiting groove, improving placement stability. At the same time, the end face of the protrusion 13 that contacts the backup battery 10 is designed with a bevel or arc, making the insertion of the backup battery 10 smoother and reducing resistance.

[0053] To facilitate the removal of the spare battery 10, the spare battery 10 is provided with a plurality of anti-slip protrusions 103, which are spaced apart on the outer surface of the spare battery 10.

[0054] In this embodiment, a plurality of anti-slip protrusions 103 are provided on the outer surface of the spare battery 10. These anti-slip protrusions 103 are arranged at intervals on the outer surface of the spare battery 10. The material of the anti-slip protrusions 103 is usually the same as that of the battery casing (such as hard plastic or metal), and can be attached by integral molding or secondary processing. Its shape can be strip-shaped, granular, or other geometric shapes, which are not limited here. When the user removes the spare battery 10 with his / her fingers, these anti-slip protrusions 103 can increase the friction between the fingers and the battery surface, reducing the possibility of slippage. This makes pushing and pulling the battery in a compact space more effortless and controllable. Especially when there is an interference fit and magnetic attraction between the spare battery 10 and the limiting groove, the anti-slip protrusions 103 provide the user with a clear point of force, making it easier to apply force.

[0055] This invention also proposes a wireless earphone 200, which is applied to the earphone charging case 100 proposed in this invention. Please refer to [link / reference]. Figure 5The bottom of the wireless earphone 200 is provided with a third magnetic structure 20 and a third charging contact 21. When the main battery of the wireless earphone 100 is low on power, or when the user needs to install the spare battery 10 on the wireless earphone before using it, the third magnetic structure 20 of the wireless earphone 100 can be magnetically attached to the second magnetic structure 101 on the spare battery 10, and the third charging contact 21 can be electrically connected to the second charging contact 102 on the spare battery 10. In this way, the spare battery 10 can be stably attached to the bottom of the wireless earphone 200, charging and replenishing the main battery of the wireless earphone 200, so that the wireless earphone 100 can immediately enter the charging and replenishing state or enter the charging and replenishing state during subsequent use. The charging and replenishing state means that the main battery of the wireless earphone 100 can... The wireless headset 200 is recharged by the backup battery 10. It is understood that the timing of the wireless headset 200 entering the recharge state can be set according to the parameters of its internal circuitry. For example, the wireless headset 200 can enter the recharge state when it experiences power loss due to use, or when the actual power level of the wireless headset 200's main battery is lower than a preset power threshold. There is no limitation on the timing of the wireless headset 200 entering the recharge state. By connecting to the backup battery 10, the wireless headset 200's usage time can be extended, preventing interruptions in headset use and thus solving problems such as lost meeting information and missed calls due to usage gaps, improving user experience and reliability.

[0056] The present invention also proposes an earphone kit 1000, the device kit including an earphone charging case 100 as described above and a wireless earphone 200 as described above. The specific structures of the earphone charging case 100 and the wireless earphone 200 are as described above. Since the earphone kit 1000 proposed in the present invention adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0057] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. An earphone charging case for energizing a wireless earphone, said wireless earphone being provided with a body battery, characterized in that, The earphone charging box is provided with a removable backup battery which can be connected with the wireless earphone; the earphone charging box has a backup battery power supply state, in which the backup battery can be connected with the wireless earphone and supply power to the body battery of the wireless earphone.

2. The earphone charging case of claim 1, wherein, The corner of the earphone charging box is provided with a backup battery module which is exposed; the backup battery is arranged in the backup battery module.

3. The earphone charging case of claim 2, wherein, The backup battery module comprises a backup battery taking-out port and a backup battery compartment; the backup battery taking-out port is located on the outside of the corner of the body of the charging box; the backup battery compartment is located on the inside of the backup battery taking-out port and away from the outside of the body of the charging box.

4. The earphone charging case of claim 3, wherein, The cross section of the backup battery taking-out port gradually increases from the direction close to the backup battery compartment to the direction away from the backup battery compartment.

5. The earphone charging case of claim 3, wherein, The earphone charging box further comprises a charging limiting protrusion which is located at the bottom of the backup battery compartment; the end surface of the backup battery is provided with a limiting edge which is protruded along the outer edge of the backup battery; the limiting edge and the end of the backup battery form a limiting groove; the charging limiting protrusion is inserted into the limiting groove.

6. The earphone charging case of claim 5, wherein, The charging limiting protrusion is provided with a first magnetic attraction structure which is located at the end of the charging limiting protrusion away from the bottom of the backup battery compartment; the backup battery is provided with a second magnetic attraction structure which is located at the end surface of the backup battery with the limiting edge; the first magnetic attraction structure and the second magnetic attraction structure are magnetically attracted and fixed.

7. The earphone charging case of claim 6, wherein, The charging limiting protrusion is further provided with a first charging contact which is located at the end of the charging limiting protrusion away from the bottom of the backup battery compartment; the first charging contact is arranged in a staggered manner with the first magnetic attraction structure; the backup battery is provided with a second charging contact which is located at the end surface of the backup battery with the limiting edge; the second charging contact is arranged in a staggered manner with the second magnetic attraction structure; the second charging contact can be electrically connected with the second charging contact.

8. The earphone charging case of any one of claims 3 to 7, wherein, The earphone charging box further comprises a pressing protrusion which is telescopically arranged on the wall of the backup battery compartment; the pressing protrusion abuts against the backup battery so that the backup battery is in interference fit with the backup battery compartment.

9. A wireless earphone applied to the earphone charging box according to any one of claims 1 to 8, characterized in that, The wireless earphone is provided with a body battery; the wireless earphone can be electrically connected with the backup battery of the earphone charging box; the wireless earphone has a use power supply state, in which the wireless earphone is connected with the backup battery and the backup battery can supply power to the body battery.

10. An earphone kit, characterized by, The earphone kit comprises the earphone charging box according to any one of claims 1 to 8 and the wireless earphone according to claim 9.

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