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 comprises a first charging box and a second charging box, the second charging box is connected with the first charging box, the first charging box is provided with a first battery which is fixedly arranged, and the second charging box is provided with a second battery which can be taken out; the earphone charging box has a first energy supply state and a second energy supply state, in the first energy supply state, the first charging box is configured to accommodate the wireless earphone, and the first battery supplies energy to the body battery; and in the second energy supply state, the second charging box is configured to be taken out of the second battery, so that the second battery can be mounted on the wireless earphone and supplies energy to the body battery. 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] The present application relates to the technical field of wearable devices, in particular to an earphone charging box, a wireless earphone and an earphone kit. BACKGROUND

[0002] A true wireless earphone (TWS earphone) is an earphone without a traditional physical connection line, which is usually connected with a smart device such as a mobile phone or a tablet computer through Bluetooth technology to play sound for a user. This kind of wireless earphone can only rely on the real-time power supply of its own body battery, because there is no physical connection line to realize the power compensation of the earphone in the use state.

[0003] In the related art, in order to avoid the problem that the wireless earphone cannot continue to be used due to insufficient power of the body battery in the scenarios of long-time call, live broadcast, conference and the like, the charging box corresponding to the earphone is provided with a backup battery, which can replace the body battery when the power of the body battery is insufficient, thereby ensuring the usability of the earphone. However, the user still has the problem of interruption of use of the earphone because of the need to replace the battery, resulting in the problems of loss of conference information, missing of call content and the like. SUMMARY

[0004] The main purpose of the present application is to provide an earphone charging box, which aims to solve the problem of use gap of the earphone caused by the need to replace the battery, and interrupt the use state of the earphone.

[0005] To achieve the above-mentioned purpose, the earphone charging box provided by the present application is used to supply power to a wireless earphone, the wireless earphone is provided with a body battery, the earphone charging box comprises a first charging box and a second charging box, the second charging box is connected to the first charging box, the first charging box is provided with a first battery fixedly arranged, and the second charging box is provided with a second battery which can be taken out. The earphone charging box has a first power supply state and a second power supply state, in the first power supply state, the first charging box is configured to accommodate the wireless earphone, and the first battery supplies power to the body battery; in the second power supply state, the second charging box is configured to take out the second battery, so that the second battery can be installed on the wireless earphone and supply power to the body battery.

[0006] In an embodiment of the present application, the first charging box and the second charging box are detachably connected.

[0007] In an embodiment of the present application, the first charging box is provided with a first charging interface and a first charging management module, the first charging management module is electrically connected to the first charging interface and the first battery; the second charging box is provided with a second charging interface and a second charging management module, and the second charging management module is electrically connected to the second charging interface and the second battery.

[0008] In an embodiment of the present application, the earphone charging box has a combined state in which the first charging management module is electrically connected with the second charging management module, the first charging management module is further configured to electrically connect the second battery, and the second charging management module is further configured to electrically connect the first battery.

[0009] In an embodiment of the present application, the first charging box is provided with a positioning column at an end surface thereof facing the second charging box, the second charging box is provided with a positioning hole at an end surface thereof facing the first charging box, the positioning hole is arranged corresponding to the positioning column, and the positioning column and the positioning hole are in plug-in cooperation.

[0010] In an embodiment of the present application, the positioning column is provided with an electromagnet, and the bottom of the positioning hole is provided with a permanent magnet; when the electromagnet is electrified, the electromagnet and the permanent magnet are magnetically attracted and fixed.

[0011] In an embodiment of the present application, the first charging box is provided with a control mainboard and a Hall sensor, the Hall sensor is configured to sense the magnetic field strength of the permanent magnet to generate a signal that the earphone charging box is in place, and the control mainboard is configured to electrify the electromagnet according to the signal that the earphone charging box is in place.

[0012] In an embodiment of the present application, the control mainboard is further configured to control the electrification or de-energization of the electromagnet according to the power state of the second charging box.

[0013] The present application further provides a wireless earphone applied to the earphone charging box as described in any one of the above embodiments, the wireless earphone is provided with a body battery, and the wireless earphone can be electrically connected with the second battery of the earphone charging box; the wireless earphone has a use and power supplementing state in which the wireless earphone is connected with the second battery, and the second battery can supplement power to the body battery.

[0014] The present application further provides an earphone kit, which comprises the earphone charging box as described in any one of the above embodiments and the wireless earphone as described above.

[0015] In the technical solution, the earphone charging box provided by the application can solve the problem that the wireless earphone must be interrupted for charging or battery replacement due to power consumption during long-time use by connecting the first charging box with the second charging box and providing the second battery that can be removed from the second charging box, thereby realizing truly uninterrupted continuous use. Specifically, the second battery is not used to replace the body battery of the earphone, but as an external backup battery. The user can remove the second battery from the second charging box and connect it to the wireless earphone in advance by magnetic attraction, buckling or other methods. At this time, the second battery and the body battery of the earphone exist on the earphone physically and electrically at the same time, and the second battery directly charges or parallelly supplies power to the body battery. This means that the earphone can continuously charge during subsequent use. By the way of "simultaneous existence of the second battery and the body battery and real-time power supply", any use gap caused by searching for the charging box, placing the earphone for charging or replacing the battery is completely avoided, ensuring the absolute continuity of the audio signal and the call connection, thereby effectively solving the problems of conference information loss and missed call content caused by use interruption, and greatly improving the use experience and reliability in key scenarios such as live broadcast, conference and long-time call. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0017] Figure 1 Structure schematic diagram of an embodiment of the earphone charging box provided by the application; Figure 2 Structure schematic diagram of an embodiment of the first charging box provided by the application; Figure 3 Structure schematic diagram of an embodiment of the second charging box provided by the application; Figure 4 Structure schematic diagram of an embodiment of the earphone provided by the application; Figure 1 Figure 5 Circuit schematic diagram of an embodiment of the earphone charging box provided by the application; Figure 6 Cooperation schematic diagram of another embodiment of the earphone charging box provided by the application; Figure 7 Structure schematic diagram of an embodiment of the wireless earphone provided by the application.

[0018] Explanation of reference numerals:​ 100, earphone charging box; 11, first charging box; 111, first battery; 112, first charging interface; 113, first charging management module; 114, positioning column; 115, abutting convex; 1151, first magnetic attraction structure; 1152, first charging contact; 116, earphone flip cover; 12, second charging box; 121, second battery; 122, second charging interface; 123, second charging management module; 124, positioning hole; 1211, second magnetic attraction structure; 1212, second charging contact; 1213, limiting edge; 200, wireless earphone; 20, third magnetic attraction structure; 21, third charging contact; 1000, earphone kit.

[0019] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0022] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0023] In the prior art, in order to ensure that the wireless earphone 200 does not have the problem of insufficient power in the face of a longer use application scenario, the body battery in the wireless earphone 200 is usually detachably connected, when the body battery is insufficient, the user needs to replace the body battery, replace the second battery 121, so as to continue to use the wireless earphone 200, but because the battery needs to be replaced, the earphone will have a use gap in the whole use process every time, in the face of some emergency meetings, the content of the call is important, because the battery needs to be replaced, the earphone cannot be used to continue to listen to the related content, and the content is missed, etc. Problem, at the same time, because the battery needs to be replaced, the user will inevitably be distracted, and the content record is incomplete, etc. Problem.

[0024] The main purpose of the present application is to provide an earphone charging box 100, which aims to solve the problem of use gap and interruption of earphone use caused by battery replacement.

[0025] To achieve the above purpose, please refer to Figure 1 The earphone charging box 100 provided by the present application is used for supplying power to the wireless earphone 200, the wireless earphone 200 is provided with a body battery, the earphone charging box 100 includes a first charging box 11 and a second charging box 12, the second charging box 12 is connected to the first charging box 11, the first charging box 11 has a first battery 111 arranged fixedly, and the second charging box 12 has a second battery 121 which can be taken out. The earphone charging box 100 has a first power supply state and a second power supply state, in the first power supply state, the first charging box 11 is configured to accommodate the wireless earphone 200, and the first battery 111 supplies power to the body battery; in the second power supply state, the second charging box 12 is configured to take out the second battery 121, so that the second battery 121 can be installed on the wireless earphone 200 and supply power to the body battery.

[0026] It should be explained that the earphone charging box 100 provided by the present application can not only use the second battery 121 to charge and supplement the power of the wireless earphone 200, but also has the first charging box 11, the first charging box 11 is provided with an earphone charging bin and a first battery 111, when the wireless earphone 200 is placed in the earphone charging bin, the first battery 111 can charge and supplement the power of the wireless earphone 200.

[0027] The earphone charging box 100 comprises a first charging box 11 and a second charging box 12. In an embodiment, the first charging box 11 and the second charging box 12 are fixedly connected by means of bonding, one-piece molding or the like. The second charging box 12 and the wireless earphone 200 are placed in the positions of the first charging box 11, i.e. the second charging box 12 is placed at one end of the first charging box 11 and the earphone flip cover 116 is placed at the other end of the first charging box 11, so as to avoid circuit concentration and ensure heat dissipation. In this embodiment, the end surface of the second charging box 12 facing away from the first charging box 11 is provided with a sliding cover structure or a flip cover structure. When the second battery 121 needs to be taken out, the second battery 121 can be exposed by sliding the sliding cover or rotating the flip cover, so as to be taken out by the user.

[0028] Please refer to Figure 2 and Figure 3 The first charging box 11 is provided with a containing hole at the position of the second battery 121. When the second charging box 12 is connected to the first charging box 11, the containing hole can contain part of the structure of the second battery 121. The bottom of the containing hole is provided with a pressing protrusion 115. The pressing protrusion 115 is provided with a first magnetic attraction structure 1151 and a first charging contact 1152 on the end surface facing the second battery 121. The first magnetic attraction structure 1151 and the first charging contact 1152 are arranged in a staggered manner. The second battery 121 is provided with a limiting edge 1213 on the end surface facing the first charging box 11. The limiting edge 1213 is protrudingly arranged along the outer edge of the second battery 121. The limiting edge 1213 and the end portion of the second battery 121 form a limiting groove. After the second battery 121 is inserted into the containing hole, the limiting groove is inserted and matched with the pressing protrusion 115. Meanwhile, the second battery 121 is provided with a second magnetic attraction structure 1211 and a second charging contact 1212 on the end surface with the limiting edge 1213. The second magnetic attraction structure 1211 and the second charging contact 1212 are arranged in a staggered manner.

[0029] The first magnetic attraction structure 1151 and the second magnetic attraction structure 1211 adopt permanent magnets or ferromagnetic materials, when the first magnetic attraction structure 1151 is N pole, the second magnetic attraction structure 1211 is S pole; when the first magnetic attraction structure 1151 is S pole, the second magnetic attraction structure 1211 is N pole, when the second charging box 12 is connected to the first charging box 11, the first magnetic attraction structure 1151 and the second magnetic attraction structure 1211 also contact each other, so that the second battery 121 is attracted and fixed on the abutting convex 115 through magnetic attraction of different poles, at the same time, the first charging contact 1152 and the second charging contact 1212 are aligned and in contact with each other, thereby establishing an electrical connection. The electrical connection function and the mechanical magnetic attraction fixing function are integrated on the same docking surface, and the two are physically isolated through staggered arrangement to avoid mutual interference. The magnetic attraction structure helps to ensure that the two end surfaces are tightly attached, thereby ensuring the stability and reliability of the charging contact. The charging current is transmitted through the connected contacts.

[0030] Please refer to Figure 3 and Figure 7 When the second battery 121 is taken out of the second charging box 12 and installed in the wireless earphone 200, the second battery 121 can charge the body battery of the wireless earphone 200, wherein the wireless earphone 200 includes a third magnetic attraction structure 20 and a third charging contact 21, the third magnetic attraction structure 20 and the second magnetic attraction structure 1211 are attracted by different poles, so that the second battery 121 can be fixed on the wireless earphone 200, at the same time, the second charging contact 1212 of the second battery 121 contacts the third charging contact 21 of the wireless earphone 200, and the current of the second battery 121 passes through the second battery 121, the internal protection plate of the second battery 121, the second charging contact 1212 of the second battery 121, the third charging contact 21 of the wireless earphone 200, the internal charging management circuit of the wireless earphone 200, the protection plate of the body battery to the body battery of the wireless earphone 200, so as to realize the charging of the body battery of the wireless earphone 200 by the second battery 121.

[0031] In a conference scenario, a user roughly knows the duration of a conference according to the requirements of the conference, and the battery of the body of the wireless earphone 200 is not timely charged, so the power of the battery only allows support for a T2 duration, which is less than or equal to the T1 duration, to avoid the problem of insufficient power of the battery of the wireless earphone 200 in the middle of the conference, the user connects the second battery 121 to the wireless earphone 200 that has been connected to an external device before the conference starts, at this time, the second battery 121 is electrically connected to the battery of the body of the wireless earphone 200 through the contact charging mode, thereby realizing charging of the battery of the body, thereby prolonging the use duration of the wireless earphone 200, solving the problem of interrupting the use of the wireless earphone 200 due to the need to replace the battery of the wireless earphone 200 or the wireless earphone 200, avoiding the problem of loss of conference information, missing of call content and the like due to use gaps, and improving user experience and reliability.

[0032] In the technical solution, the earphone charging box 100 provided by the application can solve the problem of interrupting the use of the wireless earphone 200 due to power depletion in long-time use, thereby realizing truly uninterrupted continuous use. Specifically, the second battery 121 is not used to replace the battery of the body of the earphone, but as an external backup battery, the user can take out the second battery 121 from the second charging box 12 and connect it to the wireless earphone 200 in advance by magnetic attraction, buckling or the like, at this time, the second battery 121 and the battery of the body of the earphone exist on the earphone in physics and circuit at the same time, and the second battery 121 directly charges or parallelly supplies power to the battery of the body, which means that the earphone can continuously be charged in the subsequent use process, and through the way of "simultaneous existence of the second battery 121 and the battery of the body and real-time power supply", any use gap caused by searching for a charging box, placing the earphone for charging or replacing the battery is completely avoided, the absolute continuity of audio signals and call connection is ensured, thereby effectively solving the problem of loss of conference information, missing of call content and the like caused by use interruption, and greatly improving the use experience and reliability in key scenarios such as live broadcast, conference and long-time call.

[0033] In another embodiment, please refer to Figure 4 The first charging box 11 and the second charging box 12 are detachably connected.

[0034] In the embodiment, the end of the first charging box 11 facing the second charging box 12 is provided with two parallel guide rails and an elastic buckle, the head of the elastic buckle has an inclined surface and a vertical locking surface; correspondingly, the corresponding end of the second charging box 12 is provided with a guide block matched with the guide rail and a buckle window matched with the head of the buckle. When the user needs to combine, the slider of the second charging box 12 is aligned with the guide rail and pushed axially, and when it is pushed to the end, the head of the elastic buckle is elastically deformed under the guidance of the inclined surface and then resets, and the elastic buckle is buckled into the buckle window, thereby completing the mechanical locking of the first charging box 11 and the second charging box 12; when the second charging box 12 needs to be separated from the first charging box 11, the user pushes the second charging box 12 in the opposite direction, and the second charging box 12 can be pulled out in the opposite direction along the guide rail, realizing quick separation.

[0035] In an embodiment of the present application, please refer to Figure 5 , the first charging box 11 is provided with a first charging interface 112 and a first charging management module 113, and the first charging management module 113 is electrically connected to the first charging interface 112 and the first battery 111; the second charging box 12 is provided with a second charging interface 122 and a second charging management module 123, and the second charging management module 123 is electrically connected to the second charging interface 122 and the second battery 121.

[0036] In the embodiment, the first charging interface 112 and the second charging interface 122 can both be USB Type-C interfaces and support a general fast charging protocol (such as PD or QC protocol), so that the user can use common charging lines and chargers to charge. The first charging management module 113 is integrated on the main control circuit board inside the first charging box 11, and its core includes a first charging integrated circuit (first charging IC), a first power path management circuit, and a first battery 111 protection circuit connected to the first battery 111. The input end of the first charging IC is electrically connected to the first charging interface 112, and the output end is electrically connected to the first battery 111 through the first power path management circuit, forming a complete independent charging loop, responsible for managing the whole process from external power input to safe charging of the first battery 111, including constant current, constant voltage charging stage control, charging state indication, and overvoltage, overcurrent, and overheat protection. Similarly, the second charging management module 123 is integrated inside the second charging box 12 with the same architecture, and its core second charging IC, second power path management circuit, and second battery 121 protection circuit electrically connect the second charging interface 122 and the second battery 121, forming another completely independent charging loop.

[0037] When the first charging box 11 and the second charging box 12 are in a separated state, the first charging box 11 and the second charging box 12 can be used as two independent charging units. The user can use two chargers and two charging lines to simultaneously charge the first battery 111 of the first charging box 11 and the second battery 121 in the second charging box 12. For example, in a travel scenario, the user can simultaneously charge the two at two USB sockets on the bedside of a hotel, and the total charging power is the sum of the two, thereby greatly shortening the overall charging time and improving the charging efficiency. Even if only one charger is available, the user can choose to charge the charging box to be used first according to the priority, providing great flexibility.

[0038] In addition, each charging management module only manages the corresponding battery, and the fault isolation is good. If any module or battery has a problem, it will not affect the normal charging function of the other system. Of course, an independent LED indicator light can be provided beside each charging interface to indicate the charging state (such as charging, full, fault) of the corresponding battery, thereby providing clear and independent device state information for the user.

[0039] Further, referring to Figure 5 , the earphone charging box 100 has a combined state. In the combined state, the first charging management module 113 is electrically connected to the second charging management module 123, the first charging management module 113 is further configured to be electrically connected to the second battery 121, and the second charging management module 123 is further configured to be electrically connected to the first battery 111.

[0040] In the present embodiment, when the first charging case 11 and the second charging case 12 are assembled into one and are in the "combined state", the first charging contact 1152 and the second charging contact 1212 arranged on the interface of the two are in close contact with each other, thereby establishing a two-way electrical connection path between the first charging management module 113 and the second charging management module 123, including the power bus, ground and communication data line. Based on this connection, the control mainboard located in the first charging case 11 will execute the preset power routing and charging strategy management, specifically, no matter whether the user inserts the charging cable into the first charging interface 112 or the second charging interface 122, the system can automatically identify the input power and distribute it to the first battery 111 and the second battery 121 for charging through the internally reconfigured power path. For example, when the charger is connected to the first charging interface 112, the first charging management module 113 can share power with the second charging management module 123 through the established power bus while charging the first battery 111, thereby charging the second battery 121; vice versa. The whole charging process is coordinated by the master control unit, and various preset strategies such as equalization charging, sequential fast charging or main case priority can be executed according to the real-time battery capacity information, greatly improving the convenience and simplicity of daily use. The user does not need to distinguish the interface, and only one charging cable is needed to connect any one interface in the combined state to charge the two batteries of the whole system, avoiding the trouble of cable confusion, and at the same time, the centralized charging management of the control mainboard optimizes the overall charging efficiency and battery life.

[0041] In another embodiment, please refer to Figure 6 , the end surface of the first charging case 11 facing the second charging case 12 is provided with a positioning column 114, and the end surface of the second charging case 12 facing the first charging case 11 is provided with a positioning hole 124, the positioning hole 124 is arranged corresponding to the positioning column 114, and the positioning column 114 and the positioning hole 124 are inserted and matched.

[0042] In the embodiment, the positioning column 114 is a cylindrical structure protruding outward from the end face of the first charging box 11, and the surface of the column body can be provided with a guide slope or chamfer; the positioning hole 124 is a blind hole recessed inward from the end face of the second charging box 12, and the shape and size thereof are adapted to the positioning column 114. When the user needs to connect the second charging box 12 to the first charging box 11, the first charging box 11 and the second charging box 12 can be precisely plugged and connected by aligning the positioning hole 124 with the positioning column 114 and pushing along the axial direction of the positioning hole 124. The plugging and connecting relationship provides the first charging box 11 and the second charging box 12 with a primary physical connection and accurate radial positioning, ensures that the two do not deviate or shake after being combined, and also provides an accurate alignment basis for the electrical connection contacts arranged on the abutting faces of the two, thereby ensuring the reliability of the charging and communication connection. It can be understood that the positioning column 114 and the positioning hole 124 can be assembled through transition fit or clearance fit.

[0043] Further, in order to improve the connection strength between the first charging box 11 and the second charging box 12, the positioning column 114 is provided with an electromagnet, and the bottom of the positioning hole 124 is provided with a permanent magnet; when the electromagnet is powered on, the electromagnet and the permanent magnet are magnetically fixed.

[0044] In the embodiment, the surface of the first charging box 11 is provided with an electronic button, which is electrically connected with the control mainboard inside the first charging box 11; after the user sleeves the positioning hole 124 of the second charging box 12 on the positioning column 114 and pushes it to the bottom, presses the electronic button, the control mainboard immediately receives the corresponding trigger signal and controls the current to flow into the electromagnet coil in the positioning column 114, so that the electromagnet generates magnetism and strongly attracts the permanent magnet at the bottom of the positioning hole 124, thereby improving the connection and locking strength between the first charging box 11 and the second charging box 12; alternatively, a mechanical micro switch is arranged inside the first charging box 11, and the trigger handle thereof is located at the root of the positioning column 114; when the positioning column 114 is completely inserted into the positioning hole 124 and the end face of the second charging box 12 is abutted in place, the micro switch is pressed and closed, and the switch signal generated thereby directly drives or drives the electromagnet to be powered on after being processed by the main control circuit; in addition, the first charging box 11 can also integrate a wireless communication module; when the user issues a locking instruction through a paired smart phone, the locking instruction is transmitted to the main control circuit through the wireless communication module, and the main control circuit inputs a corresponding locking current to the electromagnet to realize remote locking.

[0045] In another embodiment, the first charging box 11 is provided with a control mainboard and a Hall sensor, the Hall sensor is configured to sense the magnetic field strength of the permanent magnet to generate an in-place signal, and the control mainboard is configured to power on the electromagnet according to the in-place signal.

[0046] In the present embodiment, the Hall sensor is located inside the first charging case 11 and arranged close to the root of the positioning column 114, with its sensing end facing the direction in which the positioning hole 124 is inserted. When the user inserts the positioning hole 124 of the second charging case 12 into the positioning column 114 and pushes it axially, the permanent magnet at the bottom of the positioning hole 124 approaches; as the insertion depth increases, the magnetic field strength sensed by the Hall sensor continues to increase. When the second charging case 12 is pushed to the fully seated position, with the end faces of the two case bodies abutting, the distance between the permanent magnet and the Hall sensor reaches a preset minimum value, at which point the magnetic field strength sensed by the Hall sensor exceeds the trigger threshold set inside the Hall sensor, causing the output level of the Hall sensor to jump, generating a high-level seated signal and transmitting it to the control motherboard. According to the jump of the seated signal, the control motherboard immediately outputs a constant operating current to the electromagnet coil wound inside the positioning column 114 through its integrated drive circuit (such as a MOSFET switch tube). The electromagnet coil generates a strong magnetism under the excitation of the current, with a polarity opposite to that of the permanent magnet, thereby forming a strong axial attractive force between the two, tightly magnetically locking the first charging case 11 and the second charging case 12 together, achieving automatic and significant enhancement of the connection strength. In this way, without any additional key operation by the user, the stable locking is automatically completed at the same time as the physical insertion is completed, greatly improving the convenience and connection reliability of use.

[0047] Further, the control motherboard is also configured to control the energization or de-energization of the electromagnet according to the state of charge of the second charging case 12.

[0048] Specifically, the control motherboard establishes a communication connection with the second charging management module 123 in the second charging case 12 through the charging contacts on the docking surface of the first charging case 11 and the second charging case 12, thereby being able to obtain the state of charge information of the second battery 121 in real time. Based on this information, when the second charging case 12 is connected in place and the electromagnet is energized and locked due to the triggering of the Hall sensor, the control motherboard continuously monitors the state of charge of the second battery 121 in the subsequent process; if it is monitored that the second battery 121 is fully charged and the first battery 111 of the first charging case 11 is also fully charged or is not in an external charging state, the control motherboard determines that the standby power module is ready and there is no need to maintain the strong connection, and controls the electromagnet to be de-energized, so that the connection relationship between the first charging case 11 and the second charging case 12 is switched to the basic connection state provided by the positioning column 114 and the positioning hole 124 only, which not only saves the standby power consumption of the electromagnet, but also makes the subsequent manual separation operation more labor-saving; on the contrary, if the second battery 121 is not fully charged and the system is charging through any charging interface, the control motherboard will maintain the energization of the electromagnet to ensure the absolute stability of the connection interface and the reliability of the electrical contact during charging until the charging is completed.

[0049] The application further provides a wireless earphone 200, please refer to Figure 7 The bottom of the wireless earphone 200 is provided with a third magnetic attraction structure 20 and a third charging contact 21, the third magnetic attraction structure 20 can realize magnetic attraction fixing with the second magnetic attraction structure 1211 on the second battery 121, and the third charging contact 21 can realize electrical connection with the second charging contact 1212 on the second battery 121, so that the second battery 121 can be stably attached to the bottom of the wireless earphone 200, and the body battery of the wireless earphone 200 is charged and supplemented, thereby prolonging the power use time of the wireless earphone 200, avoiding the problem that the user interrupts the earphone use state, thereby solving the problems of conference information loss and missed listening of call content caused by use gap, and improving user experience and reliability.

[0050] The application further provides an earphone kit 1000, the device kit comprising the earphone charging box 100 according to any one of the above embodiments and the wireless earphone 200 according to the above, and the specific structure of the earphone charging box 100 and the wireless earphone 200 is referred to the above embodiments, since the earphone kit 1000 according to the application adopts all the technical solutions of the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0051] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, any equivalent structural transformation made according to the application concept of the application, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. An earphone charging case for powering wireless earphones, wherein the wireless earphones are equipped with a main battery, characterized in that, The earphone charging case includes a first charging case and a second charging case, the second charging case being connected to the first charging case, the first charging case having a fixedly disposed first battery, and the second charging case having a removable second battery. The earphone charging case has a first power supply state and a second power supply state. In the first power supply state, the first charging case is configured to accommodate the wireless earphones, and the first battery supplies power to the main battery. In the second power supply state, the second charging case is configured to remove the second battery so that the second battery can be installed on the wireless earphone and power the main battery.

2. The earphone charging case as described in claim 1, characterized in that, The first charging box and the second charging box are detachably connected.

3. The earphone charging case as described in claim 2, characterized in that, The first charging box is provided with a first charging interface and a first charging management module, and the first charging management module is electrically connected to the first charging interface and the first battery; the second charging box is provided with a second charging interface and a second charging management module, and the second charging management module is electrically connected to the second charging interface and the second battery.

4. The earphone charging case as described in claim 3, characterized in that, The earphone charging case has a combined state. In the combined state, the first charging management module and the second charging management module are electrically connected. The first charging management module is also configured to be electrically connected to the second battery, and the second charging management module is also configured to be electrically connected to the first battery.

5. The earphone charging case as described in any one of claims 1 to 4, characterized in that, The first charging box has a positioning post on its end face facing the second charging box, and the second charging box has a positioning hole on its end face facing the first charging box. The positioning hole is provided corresponding to the positioning post, and the positioning post is inserted into the positioning hole.

6. The earphone charging case as described in claim 5, characterized in that, The positioning post is equipped with an electromagnet, and the bottom of the positioning hole is equipped with a permanent magnet; when the electromagnet is energized, the electromagnet and the permanent magnet are magnetically attracted and fixed together.

7. The earphone charging case as described in claim 6, characterized in that, The first charging box is equipped with a control motherboard and a Hall sensor. The Hall sensor is configured to sense the magnetic field strength of the permanent magnet to generate a positioning signal. The control motherboard is configured to energize the electromagnet according to the positioning signal.

8. The earphone charging case as described in claim 7, characterized in that, The control board is also configured to control the electromagnet to be energized or de-energized according to the power status of the second charging box.

9. A wireless earphone, applied to an earphone charging case as described in any one of claims 1 to 8, characterized in that, The wireless earphone is equipped with a main battery and can be electrically connected to a second battery in the earphone charging case; the wireless earphone has a charging state, in which the wireless earphone is connected to the second battery and the second battery can charge the main battery.

10. A headphone kit, characterized in that, The headphone kit includes a headphone charging case as claimed in any one of claims 1 to 8 and wireless headphones as claimed in claim 9.

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