Wearable device and battery device

Abstract

The invention provides wearable equipment and a battery device. The wearable device comprises a device body, a battery assembly and an expansion body. The device body includes a first electrical connection contact. The battery assembly comprises a shell detachably connected with the equipment body. The expansion body is disposed between the housing and the device body. The expansion body is configured to absorb heat and expand when the temperature is greater than 40 DEG C. When the expansion body expands, the battery assembly is pushed to move away from the equipment body, so that the first electric connection contact is separated from the second electric connection contact.

Description

Technical Field

[0001] The present application relates to the field of electronic equipment, and in particular to a wearable device and a battery device. Background Art

[0002] Wearable devices are increasingly used in people's daily lives. In order to extend the use time of wearable devices, wearable devices have relatively high requirements for battery capacity. At present, wearable devices usually use built-in batteries to provide power. Limited by the size of the wearable device itself, the battery itself is relatively small, which is difficult to meet the long-term battery life requirements of wearable devices, affecting the wearing experience. Summary of the invention

[0003] In view of the above problems, the present application provides a wearable device and a battery device, which are helpful to improve the battery life of the wearable device.

[0004] The present application provides a wearable device, which includes a device body, a battery assembly and an expansion body. The device body includes a first electrical connection contact. The battery assembly includes a shell that is detachably connected to the device body. The expansion body is arranged between the shell and the device body. The expansion body is configured to absorb heat and expand when the temperature is greater than 40 degrees Celsius. When the expansion body expands, it pushes the battery assembly away from the device body to separate the first electrical connection contact from the second electrical connection contact.

[0005] The wearable device of the embodiment of the present application includes a device body, a battery assembly and an expansion body. The battery assembly is an external power source. The battery assembly is arranged outside the device body. The battery assembly is not affected or limited by the size of the device body, so that the battery cell in the battery assembly can be designed to have a relatively large battery capacity, which is conducive to improving the endurance of the wearable device and improving the user experience satisfaction. The battery assembly includes a substrate and an expansion body. The expansion body is located between the shell and the device body. The expansion body is an endothermic expansion structure. After the expansion body absorbs more heat, it can expand and deform itself. Under normal working conditions of the battery assembly, the expansion body itself does not expand and deform. When the battery assembly fails and causes its own temperature to rise significantly, when the temperature is greater than 40 degrees Celsius, the expansion body expands after absorbing more heat. When the expansion body expands and deforms, a force can be applied to the battery assembly, so that the battery assembly can move away from the device body under the push of the expansion body, and the first electrical connection contact and the second electrical connection contact are separated, so that the battery assembly and the device body are promptly disconnected from the electrical connection state, thereby improving the safety of the battery assembly.

[0006] In one or more optional embodiments above, the wearable device includes a substrate, the substrate is arranged between the shell and the device body, the substrate includes a receiving groove, and the expansion body is arranged in the receiving groove.

[0007] The substrate can provide an installation base for the expansion body, so that the integral structure formed by the substrate and the expansion body can be arranged between the housing and the device body, thereby improving the installation convenience of the expansion body, and the substrate can provide protection for the expansion body.

[0008] In one or more of the above optional embodiments, the substrate is connected to the housing, and the receiving groove has an opening facing the device body.

[0009] In one or more of the above optional embodiments, the substrate is bonded to a surface of the housing facing the device body.

[0010] The substrate and the shell are bonded together, which helps to reduce the difficulty of connecting the substrate and the shell. At the same time, there is no need to set up additional connecting structures on the substrate and the shell, which helps to reduce the difficulty of processing the substrate and the shell.

[0011] In one or more optional embodiments above, the housing includes a top surface and a bottom surface opposite to each other, first engaging protrusions are respectively provided on the top surface and the bottom surface, the substrate includes a engaging slot, and the first engaging protrusion is engaged with the engaging slot.

[0012] The substrate and the shell are connected by mutually engaging the first engaging protrusion and the engaging groove, which is beneficial to improving the connection stability and reliability between the substrate and the shell and reducing the possibility of the substrate falling off and being lost due to separation of the substrate and the shell.

[0013] In one or more optional embodiments above, the housing includes a top surface and a bottom surface opposite to each other, and second snap-fitting protrusions are respectively arranged on opposite sides of the substrate, and the second snap-fitting protrusions are respectively snap-fitted to the top surface and the bottom surface.

[0014] The substrate is connected to the shell by snapping the second snap-fitting protrusion, which is beneficial to improving the connection stability and reliability between the substrate and the shell, and reducing the possibility of the substrate falling off and being lost due to separation of the substrate and the shell.

[0015] In one or more optional embodiments above, the substrate is connected to the device body, and the receiving groove has an opening toward the housing. The opening of the receiving groove avoids the expansion body. When the expansion body absorbs heat and expands, the expansion body exerts a force on the battery assembly, pushing the battery assembly away from the device body, so that the first electrical connection contact is separated from the second electrical connection contact.

[0016] In one or more of the above optional embodiments, the substrate includes a plurality of receiving grooves, the plurality of receiving grooves are distributed in an array, and an expansion body is disposed in each receiving groove.

[0017] The receiving grooves are dispersed in different areas of the substrate. When a battery assembly fails, the temperature of different areas of the battery assembly itself is different. The method of providing expansion bodies in different areas of the substrate is, on the one hand, conducive to ensuring that at least a part of the expansion bodies can expand and deform to push the battery assembly away from the device body, reducing the possibility that the battery assembly cannot be pushed by the expansion body and the first electrical connection contact and the second electrical connection contact are still in an electrically connected state; on the other hand, the volume of each expansion body itself is relatively small, and the response time of the expansion body to absorb heat and expand is short, which improves the rapid response capability of the expansion body, which is conducive to timely disconnecting the failed battery assembly from the device body and improving the safety of the battery assembly.

[0018] In one or more of the above optional embodiments, the receiving groove is a through hole, and the expansion body is in contact with the outer shell.

[0019] The way the expansion body contacts the outer shell makes the thermal resistance between the expansion body and the outer shell relatively small, which is conducive to improving the heat conduction efficiency. When a battery assembly fails, the heat of the battery assembly itself can be relatively quickly transferred to the expansion body and absorbed by the expansion body, so that the response time of the expansion body absorbing heat and expanding is relatively short, which is conducive to improving the rapid response capability of the expansion body, and is conducive to timely disconnecting the failed battery assembly from the device body, thereby improving the safety of the battery assembly.

[0020] In one or more optional embodiments above, the substrate is connected to the housing. The receiving groove is a tapered hole, and the opening area of ​​the receiving groove toward the device body is larger than the opening area of ​​the receiving groove toward the housing.

[0021] When the expansion body absorbs heat and expands and deforms, the accommodating groove can guide the expansion body to expand rapidly toward the device body, so that the expansion body can come into contact with the device body in a relatively short time, thereby pushing the battery assembly away from the device body in a relatively short time, which is conducive to timely disconnecting the faulty battery assembly from the device body and improving the safety of the battery assembly.

[0022] In one or more of the above optional embodiments, the substrate is connected to the device body, the receiving groove is a tapered hole, and the opening area of ​​the receiving groove toward the housing is larger than the opening area of ​​the receiving groove toward the device body.

[0023] When the expansion body absorbs heat and expands and deforms, the accommodating groove can guide the expansion body to expand rapidly toward the outer shell, so that the expansion body can come into contact with the outer shell in a relatively short time, thereby pushing the battery assembly away from the device body in a relatively short time, which is conducive to timely disconnecting the faulty battery assembly from the device body and improving the safety of the battery assembly.

[0024] In one or more of the above optional embodiments, the substrate is connected to the housing, and a gap is provided between the expansion body and the device body.

[0025] After the battery assembly is connected to the device body, the expansion body does not contact the device body, so the expansion body will not raise the battery assembly, reducing the possibility of poor connection between the first electrical connection contact and the second electrical connection contact due to the elevation formed by the contact between the expansion body and the device body.

[0026] In one or more of the above optional embodiments, the substrate is connected to the device body, and there is a gap between the expansion body and the shell.

[0027] After the battery assembly is connected to the device body, the expansion body and the outer shell are not in contact, so the expansion body will not raise the battery assembly, reducing the possibility of poor connection between the first electrical connection contact and the second electrical connection contact due to the elevation formed by the contact between the expansion body and the outer shell.

[0028] In one or more of the above optional embodiments, the gap has a value ranging from 0.1 mm to 2 mm.

[0029] When the gap H between the expansion body and the device body is less than 0.1 mm, the gap H between the expansion body and the device body is relatively small, and the installation position accuracy of the battery assembly is required to be high, which increases the difficulty of installing the battery assembly and leads to low efficiency of battery assembly installation. When the gap H between the expansion body and the device body is greater than 2 mm, the gap H between the expansion body and the device body is relatively large. When the expansion body expands, it takes a relatively long time for the expansion body and the device body to achieve contact, which is not conducive to timely disconnecting the faulty battery assembly from the device body. In the embodiment of the present application, the value range of the gap H is 0.1 mm to 2 mm, which is conducive to reducing the possibility of the above problems.

[0030] When the gap H between the expansion body and the shell is less than 0.1 mm, the gap H between the expansion body and the shell is relatively small, and the installation position accuracy of the battery assembly is required to be high, which increases the difficulty of installing the battery assembly and leads to low efficiency of battery assembly installation. When the gap H between the expansion body and the shell is greater than 2 mm, the gap H between the expansion body and the shell is relatively large. When the expansion body expands, it takes a relatively long time for the expansion body and the shell to achieve contact, which is not conducive to timely disconnecting the faulty battery assembly from the device body. In the embodiment of the present application, the value range of the gap H is 0.1 mm to 2 mm, which is conducive to reducing the possibility of the above problems.

[0031] In one or more optional embodiments above, the second electrical connection contact protrudes out of the outer casing toward the device body, the protruding height of the second electrical connection contact is T0, the substrate and the expansion body form a composite structure, the maximum thickness of the composite structure is T1, wherein T0 is greater than T1.

[0032] The method in which T0 is greater than T1 can ensure that after the first electrical connection contact and the second electrical connection contact come into contact, the composite structure formed by the substrate and the expansion body will not come into contact with the device body, so that the composite structure will not raise the battery assembly, thereby reducing the possibility of poor connection between the first electrical connection contact and the second electrical connection contact due to the raising of the composite structure in contact with the device body.

[0033] In one or more optional embodiments above, the wearable device includes a limiter, the limiter includes a connecting plate and a stop plate, the connecting plate is connected to the surface of the device body facing the shell, the stop plate is arranged at the end of the connecting plate away from the device body, there are two limiters, the shell is arranged between the two limiters, the shell includes two opposite side surfaces, the two side surfaces are provided with limiter protrusions, the limiter protrusions are located between the stop plate and the device body, and there is a gap between the limiter protrusions and the stop plate. When the limiter protrusion contacts the stop plate, the stop plate is used to limit the movement of the battery assembly in the direction away from the device body.

[0034] When the battery assembly fails, the expansion body absorbs heat and expands, and the expansion body pushes the battery assembly to move away from the device body, while the limiting protrusion moves closer to the stop plate. After the limiting protrusion on the housing contacts the stop plate, the stop plate can stop the limiting protrusion, so that the battery assembly does not continue to move, which helps to reduce the possibility of the battery assembly being disconnected from the limiting member and falling.

[0035] In one or more optional embodiments above, the limiting member includes a supporting plate, the housing includes a top surface and a bottom surface relative to each other, the supporting plate is located on the side of the bottom surface facing away from the top surface, and the supporting plate is used to support the battery assembly.

[0036] The support plate can support the battery assembly, which is beneficial to improve the position stability of the battery assembly and reduce the possibility of positional deviation of the battery assembly along the width direction of the device body. At the same time, when installing the battery assembly on the device body, the support plate can play a positioning role, so that when the battery assembly contacts the support plate, the battery assembly reaches the predetermined position, which is beneficial to reduce the difficulty of battery assembly installation operation and improve the installation efficiency of the battery assembly. When the battery assembly fails, the expansion body absorbs heat and expands, and the battery assembly can be separated from the device body under the push of the expansion body. The support plate can support the separated battery assembly and reduce the possibility of the battery assembly falling.

[0037] In one or more of the above optional embodiments, the battery assembly also includes a first magnetic component, and the device body includes a second magnetic component. The first magnetic component and the second magnetic component are adsorbed to connect the battery assembly and the device body. When the expansion body expands, it pushes the battery assembly away from the device body to separate the first magnetic component from the second magnetic component.

[0038] The battery assembly and the device body can be connected and fixed by the magnetic attraction force generated between the first magnetic attraction component and the second magnetic attraction component. On the one hand, it is helpful to reduce the difficulty of the operation process of connecting the battery assembly and the device body; on the other hand, it can facilitate the precise docking of the first electrical connection contact and the second electrical connection contact, thereby improving the convenience of the electrical connection operation between the battery assembly and the device body.

[0039] In one or more of the above optional embodiments, the expansion body includes an elastic shell and a thermal expansion material, the elastic shell has a closed cavity, the thermal expansion material is arranged in the closed cavity, and the thermal expansion material absorbs heat and expands, so that the elastic shell expands and applies force to the device body.

[0040] The elastic shell has good sealing performance, which makes it difficult for the thermal expansion material to leak, and is beneficial to improving the safety of the expansion body.

[0041] In one or more of the above optional embodiments, the elastic shell is spherical.

[0042] The elastic shell has a regular shape and the overall force is relatively balanced, which is conducive to maintaining its own shape stability when no expansion occurs.

[0043] In one or more of the above optional embodiments, the expansion temperature threshold of the thermal expansion material is 60 degrees Celsius to 100 degrees Celsius.

[0044] When the expansion temperature threshold of the thermal expansion material is less than 60 degrees Celsius, the expansion temperature threshold of the thermal expansion material is relatively low. When the battery assembly works normally in an environment with a relatively high temperature, there is a possibility that the heat released by the battery assembly cannot be dissipated in time, causing the expansion body to absorb more heat and expand, thereby causing the expansion body to be triggered incorrectly, resulting in the inability to use the wearable device normally, affecting the user experience. When the expansion temperature threshold of the thermal expansion material is greater than 100 degrees Celsius, the expansion temperature threshold of the thermal expansion material is relatively high. When a battery assembly fails, the temperature required for the expansion body to expand is relatively high, and there is a possibility of a high temperature burning sensation on human skin, affecting the user experience. In the embodiment of the present application, the expansion temperature threshold of the thermal expansion material is 60 degrees Celsius to 100 degrees Celsius, which is conducive to reducing the possibility of the above-mentioned problems.

[0045] The present application provides a battery device, which includes a battery assembly and an expansion body. The battery assembly includes a housing and a second electrical connection contact. The housing is provided with the second electrical connection contact. The expansion body is provided on the housing. The expansion body is configured to absorb heat and expand when the temperature is greater than 40 degrees Celsius. The expansion body and the second electrical connection contact are located on the same side of the housing.

[0046] In one or more of the above optional embodiments, the shell is provided with a substrate, the substrate is provided with a receiving groove, and the expansion body is provided in the receiving groove.

[0047] The battery device of the embodiment of the present application can be applied to a wearable device. When the battery device is applied to a wearable device, the battery assembly can be arranged outside the device body. The battery assembly is an external power source. The second electrical connection contact of the battery assembly is configured to be electrically connected to the first electrical connection contact. The battery assembly is not affected or limited by the size of the device body, so the battery cell in the battery assembly can be designed to have a relatively large battery capacity, which is conducive to improving the endurance of the wearable device and improving the user experience satisfaction.

[0048] When the battery device is applied to a wearable device, the expansion body is located between the outer shell and the device body. The expansion body is an endothermic expansion structure. After the expansion body absorbs a lot of heat, it can expand and deform. When the battery assembly is working normally, the expansion body itself does not expand and deform. When the battery assembly fails and its own temperature rises significantly, when the temperature is greater than 40 degrees Celsius, the expansion body absorbs a lot of heat and expands. When the expansion body expands and deforms, it can apply a force to the battery assembly, so that the battery assembly can move away from the device body under the push of the expansion body, and the first electrical connection contact and the second electrical connection contact are separated, so that the battery assembly and the device body can be disconnected from the electrical connection state in time, thereby improving the safety of the battery assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0050] Figure 1 is a schematic diagram of the structure of a wearable device provided in one embodiment of the present application;

[0051] Figure 2 is a schematic diagram of the structure of a wearable device provided in one embodiment of the present application;

[0052] Figure 3 is a schematic diagram of a partial decomposition structure of a wearable device provided in an embodiment of the present application;

[0053] Figure 4 is a schematic diagram of a partial structure of a substrate provided in one embodiment of the present application;

[0054] Figure 5 It is a partial cross-sectional structural schematic diagram of the connection state of the substrate and the expansion body provided in one embodiment of the present application;

[0055] Figure 6 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0056] Figure 7 is a schematic diagram of a partial cross-sectional structure of a wearable device provided in one embodiment of the present application;

[0057] Figure 8 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0058] Figure 9 is a schematic diagram of a partial structure of a battery assembly provided in one embodiment of the present application;

[0059] Figure 10 is a schematic diagram of a partial exploded structure of a battery assembly provided in one embodiment of the present application;

[0060] Figure 11 is a schematic diagram of a partial structure of a battery assembly provided in one embodiment of the present application;

[0061] Figure 12 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0062] Figure 13 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0063] Figure 14 is a schematic diagram of a partial decomposition structure of a wearable device provided in an embodiment of the present application;

[0064] Figure 15 is a schematic diagram of a partial cross-sectional structure of a wearable device provided in one embodiment of the present application;

[0065] Figure 16 is a schematic diagram of a partial structure of a battery assembly provided in one embodiment of the present application;

[0066] Figure 17 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0067] Figure 18 is a schematic diagram of a partial structure of a wearable device provided in an embodiment of the present application;

[0068] Figure 19 It is a schematic diagram of the structure of an expansion body provided in one embodiment of the present application.

[0069] Description of reference numerals:

[0070] 10. Wearable devices;

[0071] 20. Equipment body;

[0072] 21. temple; 211. first electrical connection contact point;

[0073] 22, limiting member; 220, limiting groove; 221, stop plate; 222, supporting plate; 223, connecting plate;

[0074] 23. A second magnetic attraction member;

[0075] 30. Battery components;

[0076] 31. housing; 311. top surface; 312. bottom surface; 313. first clamping protrusion; 314. side surface; 315. limiting protrusion;

[0077] 32. a second electrical connection contact;

[0078] 33. second engaging protrusion;

[0079] 34. A first magnetic attraction member;

[0080] 40. substrate; 401. receiving slot; 402. card slot;

[0081] 50. expansion body; 51. elastic shell; 52. thermal expansion material;

[0082] X, width direction. DETAILED DESCRIPTION

[0083] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0084] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0085] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0086] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0087] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0088] See also Figures 1 to 8 As shown, an embodiment of the present application provides a wearable device 10, which includes a device body 20, a battery assembly 30 and an expansion body 50.

[0089] The device body 20 includes a first electrical connection contact 211. The battery assembly 30 includes a housing 31 that is detachably connected to the device body 20. A second electrical connection contact 32 is provided on a side of the housing 31 that faces the device body 20. The first electrical connection contact 211 is electrically connected to the second electrical connection contact 32. An expansion body 50 is disposed between the housing 31 and the device body 20. The expansion body 50 is configured to absorb heat and expand when the temperature is greater than 40 degrees Celsius. When the expansion body 50 expands, it pushes the battery assembly 30 away from the device body 20 to separate the first electrical connection contact 211 from the second electrical connection contact 32.

[0090] In the embodiment of the present application, the battery assembly 30 is arranged outside the device body 20 and is an external power source. There is no need to reserve space inside the device body 20 for installing the battery assembly 30, thereby saving space inside the device body 20. The second electrical connection contact 32 of the battery assembly 30 can contact the first electrical connection contact 211 provided on the device body 20, so that the battery assembly 30 can supply power to the device body 20. Exemplarily, the battery assembly 30 can be arranged outside the device body 20, and the battery assembly 30 is relatively far away from the user's skin, so as not to affect the user's wearing.

[0091] When the battery assembly 30 is in normal use, the battery assembly 30 is connected to the device body 20, and the battery assembly 30 is not easily separated from the device body 20. After the battery assembly 30 is exhausted, the battery assembly 30 can be removed from the device body 20 and charged to recycle the battery assembly 30.

[0092] A battery cell is arranged in the housing 31 of the battery assembly 30. The second electrical connection contact 32 is electrically connected to the battery cell. When the battery assembly 30 is in normal use, the heat generated by the battery cell can be dissipated to the external environment through the housing 31 to ensure that the overall temperature of the battery assembly 30 is within the normal operating temperature range. When a battery cell fails and the temperature is greater than 40 degrees Celsius, the battery cell generates more heat, causing the overall temperature of the battery assembly 30 to rise and exceed the normal operating temperature range. At this time, if the battery assembly 30 is still electrically connected to the device body 20 and is not disconnected in time, the battery assembly 30 has a safety hazard, endangering the user's body safety.

[0093] In the present application examples, see Figure 5 and Figure 6 As shown, the wearable device 10 includes an expansion body 50. When the battery assembly 30 is in normal use, the overall temperature of the battery assembly 30 is relatively low, the expansion body 50 absorbs less heat, and does not expand. Figure 7 and Figure 8 As shown, when the battery assembly 30 fails and the overall temperature of the battery assembly 30 rises, more heat cannot be dissipated in time, so that more heat can be conducted to the expansion body 50. When the expansion body 50 absorbs more heat, the expansion body 50 itself expands and deforms. The expansion body 50 can expand and deform after absorbing heat, and its overall volume increases. After the expansion body 50 expands, the expansion body 50 can apply a force to the battery assembly 30, pushing the battery assembly 30 away from the device body 20, so that the first electrical connection contact 211 is separated from the second electrical connection contact 32, thereby disconnecting the battery assembly 30 and the device body 20, so that the battery assembly 30 and the device body 20 are disconnected from the electrical connection state in time.

[0094] The wearable device 10 of the embodiment of the present application includes a device body 20, a battery assembly 30 and an expansion body 50. The battery assembly 30 is an external power source. The battery assembly 30 is arranged outside the device body 20. The battery assembly 30 is not affected or limited by the size of the device body 20, so that the battery cell in the battery assembly 30 can be designed to have a relatively large battery capacity, which is conducive to improving the endurance of the wearable device 10 and improving the user experience satisfaction. The expansion body 50 is located between the shell 31 and the device body 20. The expansion body 50 is an endothermic expansion structure. After the expansion body 50 absorbs more heat, it can expand and deform. When the battery assembly 30 is working normally, the expansion body 50 itself does not expand and deform. When the battery assembly 30 fails and causes its own temperature to rise significantly, when the temperature is greater than 40 degrees Celsius, the expansion body 50 expands after absorbing more heat. When the expansion body 50 expands and deforms, it can exert a force on the battery assembly 30, so that the battery assembly 30 can move away from the device body 20 under the push of the expansion body 50, and the first electrical connection contact 211 and the second electrical connection contact 32 are separated, so that the battery assembly 30 and the device body 20 can be disconnected from the electrical connection state in time, thereby improving the safety of the battery assembly 30.

[0095] In some achievable embodiments, the device body 20 may include smart glasses having temples 21. The temples 21 are provided with first electrical connection contacts 211. The housing 31 is detachably connected to the temples 21. The expansion body 50 is disposed between the housing 31 and the temples 21. The side of the housing 31 facing the temples 21 is provided with second electrical connection contacts 32. The first electrical connection contacts 211 are electrically connected to the second electrical connection contacts 32. The expansion body 50 is configured to absorb heat and expand. When the expansion body 50 expands, it pushes the battery assembly 30 to move away from the temples 21 so that the first electrical connection contacts 211 are separated from the second electrical connection contacts 32.

[0096] In the embodiment of the present application, the battery assembly 30 is arranged outside the device body 20 and is an external power source. No space is required inside the temple 21 for installing the battery assembly 30, thereby saving the internal space of the temple 21. The second electrical connection contact 32 of the battery assembly 30 can contact the first electrical connection contact 211 arranged on the temple 21, so that the battery assembly 30 can supply power to the device body 20. Exemplarily, the battery assembly 30 can be arranged outside the temple 21, so that the battery assembly 30 is relatively far away from the user's skin and does not affect the user's wearing.

[0097] When the battery assembly 30 is in normal use, the battery assembly 30 is connected to the temple 21, and the battery assembly 30 is not easily separated from the temple 21. After the battery assembly 30 is exhausted, the battery assembly 30 can be removed from the device body 20 and charged to recycle the battery assembly 30.

[0098] The battery assembly 30 is not affected or limited by the size of the temple 21, so the battery cells in the battery assembly 30 can be designed to have a relatively large battery capacity, which is beneficial to improving the battery life of the wearable device 10 and enhancing the user experience satisfaction.

[0099] In some achievable embodiments, the wearable device 10 includes a substrate 40. The substrate 40 is disposed between the housing 31 and the device body 20. The substrate 40 includes a receiving groove 401. The expansion body 50 is disposed in the receiving groove 401. The substrate 40 can provide a mounting base for the expansion body 50, so that the integral structure formed by the substrate 40 and the expansion body 50 is disposed between the housing 31 and the device body 20, thereby improving the installation convenience of the expansion body 50, and the substrate 40 can provide protection for the expansion body 50.

[0100] In some examples, the device body 20 includes smart glasses having temples 21. The temples 21 are provided with first electrical connection contacts 211. The housing 31 is detachably connected to the temples 21. The substrate 40 is disposed between the housing 31 and the temples 21.

[0101] In some achievable embodiments, the substrate 40 is connected to the housing 31. The receiving groove 401 has an opening toward the device body 20. The opening of the receiving groove 401 avoids the expansion body 50. When the expansion body 50 absorbs heat and expands, the expansion body 50 exerts a force on the battery assembly 30, pushing the battery assembly 30 away from the device body 20, so that the first electrical connection contact 211 is separated from the second electrical connection contact 32.

[0102] In some examples, the substrate 40 is bonded to the surface of the housing 31 facing the device body 20. The substrate 40 and the housing 31 are bonded, which is conducive to reducing the difficulty of connecting the substrate 40 and the housing 31, and there is no need to set an additional connection structure on the substrate 40 and the housing 31, which is conducive to reducing the difficulty of processing the substrate 40 and the housing 31.

[0103] In some examples, the substrate 40 may be bonded to the housing 31 by double-sided tape or adhesive.

[0104] In some possible implementations, see Figure 9 and Figure 10 As shown, the housing 31 includes a top surface 311 and a bottom surface 312 opposite to each other. The top surface 311 and the bottom surface 312 are provided with first engaging protrusions 313 respectively. The substrate 40 includes an engaging slot 402. The engaging slots 402 are provided at two opposite edges of the substrate 40. The first engaging protrusion 313 engages with the engaging slot 402.

[0105] The substrate 40 and the shell 31 are connected by interlocking the first engaging protrusion 313 and the engaging groove 402, which is beneficial to improving the connection stability and reliability between the substrate 40 and the shell 31 and reducing the possibility of the substrate 40 falling off and being lost due to separation of the substrate 40 and the shell 31.

[0106] In some examples, the device body 20 includes smart glasses having temples 21. The housing 31 is detachably connected to the temples 21. Along the width direction X of the temples 21, the housing 31 includes opposite top surfaces 311 and bottom surfaces 312, and two opposite edges of the substrate 40 are provided with card slots 402.

[0107] The first snap-fitting protrusion 313 is a strip-shaped structure. The first snap-fitting protrusion 313 can extend along the length direction of the temple 21. The length direction of the temple 21 can refer to the extension direction of the temple 21 itself. The temple 21 can include a straight section and an ear-hanging section. Exemplarily, the ear-hanging section can be curved. The assembly process of the substrate 40 and the shell 31 can be: along the length direction of the temple 21, align the slot 402 of the substrate 40 with the first snap-fitting protrusion 313, and then push the substrate 40 so that the first snap-fitting protrusion 313 is inserted into the slot 402, and the substrate 40 and the shell 31 are snap-fitted.

[0108] In some possible implementations, see Figure 11 As shown, the housing 31 includes an opposite top surface 311 and a bottom surface 312. Second engaging protrusions 33 are respectively disposed on opposite sides of the substrate 40. The second engaging protrusions 33 are respectively engaged with the top surface 311 and the bottom surface 312 of the housing 31.

[0109] The connection between the substrate 40 and the shell 31 is achieved by snapping the second snap-fitting protrusion 33 , which is beneficial to improving the connection stability and reliability between the substrate 40 and the shell 31 , and reducing the possibility of the substrate 40 and the shell 31 being separated and causing the substrate 40 to fall off and be lost.

[0110] In some examples, the device body 20 includes smart glasses having temples 21. The housing 31 is detachably connected to the temples 21. Along the width direction X of the temples 21, the housing 31 includes opposite top surfaces 311 and bottom surfaces 312, and the second clamping protrusions 33 are respectively disposed on opposite sides of the substrate 40.

[0111] In some examples, the substrate 40 may be an insulating material. For example, the material of the substrate 40 may be a polymer material, for example, the material of the substrate 40 may include but is not limited to polypropylene, polyethylene, and polyimide.

[0112] In some possible implementations, see Figure 12As shown, the substrate 40 can be connected to the device body 20. The receiving groove 401 has an opening toward the housing 31. The opening of the receiving groove 401 avoids the expansion body 50. When the expansion body 50 absorbs heat and expands, the expansion body 50 applies a force to the battery assembly 30, pushing the battery assembly 30 away from the device body 20, so that the first electrical connection contact 211 is separated from the second electrical connection contact 32. There can be a gap between the expansion body 50 and the housing 31. Alternatively, the expansion body 50 and the housing 31 can be in contact with each other.

[0113] In some examples, the substrate 40 may be bonded to the device body 20. The bonding between the substrate 40 and the device body 20 is conducive to reducing the difficulty of connecting the substrate 40 and the device body 20, and no additional connection structure is required on the substrate 40 and the device body 20, which is conducive to reducing the difficulty of processing the substrate 40 and the device body 20. Exemplarily, the device body 20 includes smart glasses with temples 21. The housing 31 is detachably connected to the temples 21. The substrate 40 may be bonded to the temples 21.

[0114] In some examples, the substrate 40 may be bonded to the device body 20 by double-sided tape or adhesive.

[0115] In some possible implementations, see Figure 13 and Figure 14 As shown, the wearable device 10 includes a limit member 22. The limit member 22 includes a connecting plate 223 and a stop plate 221. The connecting plate 223 is connected to the surface of the device body 20 facing the shell 31. The stop plate 221 is set at the end of the connecting plate 223 away from the device body 20. There are two limit members 22. The shell 31 is arranged between the two limit members 22, and the shell 31 includes two opposite side surfaces 314. Limiting protrusions 315 are arranged on the two side surfaces 314. The limiting protrusion 315 is located between the stop plate 221 and the device body 20. There is a gap between the limiting protrusion 315 and the stop plate 221. When the limiting protrusion 315 contacts the stop plate 221, the stop plate 221 is used to limit the movement of the battery assembly 30 in the direction away from the device body 20.

[0116] When the battery assembly 30 is working normally, the limiting protrusion 315 and the stop plate 221 do not contact each other. When the battery assembly 30 fails and the expansion body 50 absorbs heat and expands, the expansion body 50 pushes the battery assembly 30 to move away from the device body 20, and the limiting protrusion 315 moves closer to the stop plate 221. After the limiting protrusion 315 on the housing 31 contacts the stop plate 221, the stop plate 221 can stop the limiting protrusion 315, so that the battery assembly 30 does not continue to move, which helps to reduce the possibility of the battery assembly 30 being disconnected from the limiting member 22 and falling.

[0117] In some examples, the device body 20 includes smart glasses having temples 21. The housing 31 is detachably connected to the temples 21. Along the length direction of the temples 21, the housing 31 is disposed between the two stoppers 22, and the housing 31 includes two opposite side surfaces 314.

[0118] The limiting member 22 and the battery assembly 30 may be located on the same side of the temple 21. A limiting groove 220 is formed between the stop plate 221 and the temple 21. The limiting groove 220 has a top opening. The assembly process between the battery assembly 30 and the limiting member 22 may include: aligning the limiting protrusion 315 on the housing 31 with the top opening of the limiting groove 220 along the width direction X of the temple 21, and then pushing the battery assembly 30 downward to insert the limiting protrusion 315 into the limiting groove 220 through the top opening, and the assembly between the battery assembly 30 and the limiting member 22 is completed.

[0119] Exemplarily, the stopper 22 and the temple 21 may be an integrally formed structure.

[0120] In some achievable embodiments, the stopper 22 includes a supporting plate 222. The housing 31 includes a top surface 311 and a bottom surface 312 that are opposite to each other. The supporting plate 222 is located on a side of the bottom surface 312 that is away from the top surface 311. The supporting plate 222 is used to support the battery assembly 30.

[0121] The supporting plate 222 can support the battery assembly 30, which is beneficial to improve the position stability of the battery assembly 30 and reduce the possibility of positional deviation of the battery assembly 30. At the same time, when the battery assembly 30 is installed on the device body 20, the supporting plate 222 can play a positioning role, so that when the battery assembly 30 contacts the supporting plate 222, the battery assembly 30 reaches the predetermined position, which is beneficial to reduce the difficulty of the installation operation of the battery assembly 30 and improve the installation efficiency of the battery assembly 30. When the battery assembly 30 fails, the expansion body 50 absorbs heat and expands, and the battery assembly 30 can be separated from the device body 20 under the push of the expansion body 50. The supporting plate 222 can support the separated battery assembly 30 and reduce the possibility of the battery assembly 30 falling.

[0122] In some examples, the device body 20 includes smart glasses having temples 21. The housing 31 is detachably connected to the temples 21. Along the width direction X of the temples 21, the housing 31 includes a top surface 311 and a bottom surface 312 opposite to each other. The supporting plate 222 can support the battery assembly 30, which is beneficial to improving the position stability of the battery assembly 30 and reducing the possibility of positional displacement of the battery assembly 30 along the width direction X of the temples 21.

[0123] For some examples, see Figure 4 and Figure 15As shown, the substrate 40 includes a plurality of receiving grooves 401. The plurality of receiving grooves 401 are arranged in an array. For example, the plurality of receiving grooves 401 may be arranged in a matrix. An expansion body 50 is arranged in each receiving groove 401. The number of expansion bodies 50 may correspond to the number of receiving grooves 401.

[0124] The receiving grooves 401 are dispersed in different areas of the substrate 40. When a battery assembly 30 fails, the temperature of different areas of the battery assembly 30 itself is different. The expansion bodies 50 are arranged in different areas of the substrate 40. On the one hand, it is conducive to ensuring that at least a part of the expansion bodies 50 can expand and deform to push the battery assembly 30 away from the device body 20, and reduce the possibility that the battery assembly 30 fails to be pushed by the expansion body 50, resulting in the first electrical connection contact 211 and the second electrical connection contact 32 being still in an electrically connected state; on the other hand, the volume of each expansion body 50 itself is relatively small, and the response time of the expansion body 50 to absorb heat and expand is short, which improves the rapid response capability of the expansion body 50, which is conducive to timely disconnecting the failed battery assembly 30 from the device body 20 and improving the safety of the battery assembly 30.

[0125] In some achievable ways, the receiving groove 401 may be a through hole. The expansion body 50 contacts the housing 31. The receiving groove 401 penetrates the opposite surface of the substrate 40. The receiving groove 401 has an opening toward the device body 20 and an opening toward the housing 31.

[0126] The way the expansion body 50 contacts the outer shell 31 makes the thermal resistance between the expansion body 50 and the outer shell 31 relatively small, which is conducive to improving the heat conduction efficiency. When a battery assembly 30 fails, the heat of the battery assembly 30 itself can be relatively quickly conducted to the expansion body 50 and absorbed by the expansion body 50, so that the response time of the expansion body 50 absorbing heat and expanding is relatively short, which is conducive to improving the rapid response capability of the expansion body 50, and is conducive to timely disconnecting the failed battery assembly 30 from the device body 20, thereby improving the safety of the battery assembly 30.

[0127] For some examples, see Figure 15 As shown, the substrate 40 is connected to the housing 31. The receiving groove 401 can be a tapered hole. The opening area of ​​the receiving groove 401 toward the device body 20 is larger than the opening area of ​​the receiving groove 401 toward the housing 31. The large opening end of the receiving groove 401 faces the device body 20, and the small opening end faces the housing 31.

[0128] When the expansion body 50 absorbs heat and expands and deforms, the accommodating groove 401 can guide the expansion body 50 to expand quickly toward the device body 20, so that the expansion body 50 can come into contact with the device body 20 in a relatively short time, thereby pushing the battery assembly 30 away from the device body 20 in a relatively short time, which is conducive to timely disconnecting the faulty battery assembly 30 from the device body 20, thereby improving the safety of the battery assembly 30.

[0129] In some examples, the substrate 40 is connected to the device body 20. The receiving groove 401 may be a tapered hole. The opening area of ​​the receiving groove 401 toward the housing 31 is larger than the opening area of ​​the receiving groove 401 toward the device body 20. The large opening end of the receiving groove 401 faces the housing 31, and the small opening end faces the device body 20.

[0130] When the expansion body 50 absorbs heat and expands and deforms, the accommodating groove 401 can guide the expansion body 50 to expand quickly toward the outer shell 31, so that the expansion body 50 can come into contact with the outer shell 31 in a relatively short time, thereby pushing the battery assembly 30 away from the device body 20 in a relatively short time, which is conducive to timely disconnecting the faulty battery assembly 30 from the device body 20, thereby improving the safety of the battery assembly 30.

[0131] In some possible implementations, see Figure 6 As shown, the substrate 40 is connected to the housing 31. There is a gap H between the expansion body 50 and the device body 20. When the battery assembly 30 and the device body 20 are in a connected state, the first electrical connection contact 211 and the second electrical connection contact 32 are in contact, and there is a gap between the housing 31 of the battery assembly 30 and the device body 20. After the battery assembly 30 is connected to the device body 20, the expansion body 50 and the device body 20 are not in contact with each other, so that the expansion body 50 will not raise the battery assembly 30, reducing the possibility of poor connection between the first electrical connection contact 211 and the second electrical connection contact 32 due to the contact between the expansion body 50 and the device body 20. After the expansion body 50 absorbs heat and expands, the expansion body 50 fills the gap, and then the expansion body 50 contacts the device body 20.

[0132] In some examples, the device body 20 includes smart glasses having temples 21. The housing 31 is detachably connected to the temples 21. The substrate 40 is connected to the housing 31. A gap H is formed between the expansion body 50 and the temples 21.

[0133] In some examples, the gap H ranges from 0.1 mm to 2 mm. For example, the gap H can be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm.

[0134] When the gap H between the expansion body 50 and the device body 20 is less than 0.1 mm, the gap H between the expansion body 50 and the device body 20 is relatively small, and the installation position accuracy of the battery assembly 30 is required to be high, which increases the difficulty of installing the battery assembly 30, resulting in low installation efficiency of the battery assembly 30. When the gap H between the expansion body 50 and the device body 20 is greater than 2 mm, the gap H between the expansion body 50 and the device body 20 is relatively large. When the expansion body 50 expands, the time taken for the expansion body 50 to achieve contact with the device body 20 is relatively long, which is not conducive to timely disconnecting the faulty battery assembly 30 from the device body 20. In the embodiment of the present application, the value range of the gap H is 0.1 mm to 2 mm, which is conducive to reducing the possibility of the above-mentioned problems.

[0135] In some possible implementations, see Figure 12 As shown, the substrate 40 is connected to the device body 20. There is a gap H between the expansion body 50 and the outer shell 31. When the battery assembly 30 and the device body 20 are in a connected state, the first electrical connection contact 211 and the second electrical connection contact 32 are in contact, and there is a gap between the outer shell 31 and the device body 20. After the battery assembly 30 is connected to the device body 20, the expansion body 50 and the outer shell 31 are not in contact, so that the expansion body 50 will not raise the battery assembly 30, reducing the possibility of poor connection between the first electrical connection contact 211 and the second electrical connection contact 32 due to the contact between the expansion body 50 and the outer shell 31. After the expansion body 50 absorbs heat and expands, the expansion body 50 fills the gap, and then the expansion body 50 contacts the outer shell 31.

[0136] In some examples, the device body 20 includes smart glasses having temples 21. The housing 31 is detachably connected to the temples 21. The substrate 40 is connected to the temples 21. A gap H is formed between the expansion body 50 and the housing 31.

[0137] In some examples, the gap H ranges from 0.1 mm to 2 mm. For example, the gap H can be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm.

[0138] When the gap H between the expansion body 50 and the outer shell 31 is less than 0.1 mm, the gap H between the expansion body 50 and the outer shell 31 is relatively small, and the installation position accuracy of the battery assembly 30 is required to be high, which increases the difficulty of installing the battery assembly 30, resulting in low installation efficiency of the battery assembly 30. When the gap H between the expansion body 50 and the outer shell 31 is greater than 2 mm, the gap H between the expansion body 50 and the outer shell 31 is relatively large. When the expansion body 50 expands, the time taken for the expansion body 50 and the outer shell 31 to achieve contact is relatively long, which is not conducive to timely disconnecting the faulty battery assembly 30 from the device body 20. In the embodiment of the present application, the value range of the gap H is 0.1 mm to 2 mm, which is conducive to reducing the possibility of the above-mentioned problems.

[0139] In some possible implementations, see Figure 16 As shown, the second electrical connection contact 32 protrudes from the housing 31 toward the device body 20. The protruding height of the second electrical connection contact 32 is T0. The substrate 40 and the expansion body 50 form a composite structure. The maximum thickness of the composite structure is T1, wherein T0 is greater than T1.

[0140] Since the second electrical connection contact 32 protrudes from the housing 31, after the first electrical connection contact 211 and the second electrical connection contact 32 are in contact, there is a gap between the housing 31 of the battery assembly 30 and the device body 20. The first electrical connection contact 211 may be flush with the outer surface of the device body 20. Alternatively, the first electrical connection contact 211 may be lower than the outer surface of the device body 20, so that a height difference is formed between the first electrical connection contact 211 and the outer surface of the device body 20, thereby reducing the possibility of affecting the aesthetics due to the protrusion of the first electrical connection contact 211 from the device body 20.

[0141] The method in which T0 is greater than T1 can ensure that after the first electrical connection contact 211 and the second electrical connection contact 32 are in contact, the composite structure formed by the substrate 40 and the expansion body 50 will not raise the battery assembly 30, thereby reducing the possibility of poor connection between the first electrical connection contact 211 and the second electrical connection contact 32 due to the composite structure raising the battery assembly 30.

[0142] In some examples, the device body 20 includes smart glasses having temples 21. The housing 31 is detachably connected to the temples 21. The second electrical connection contacts 32 protrude from the housing 31 toward the temples 21.

[0143] After the first electrical connection contact 211 and the second electrical connection contact 32 are in contact, there is a gap between the housing 31 of the battery assembly 30 and the temple 21. The first electrical connection contact 211 may be flush with the outer surface of the temple 21. Alternatively, the first electrical connection contact 211 may be lower than the outer surface of the temple 21, so that a height difference is formed between the first electrical connection contact 211 and the outer surface of the temple 21, thereby reducing the possibility of affecting the aesthetics due to the protrusion of the first electrical connection contact 211 from the temple 21.

[0144] In some examples, the second electrical connection contact 32 protrudes to a height of T0. The substrate 40 and the expansion body 50 form a composite structure. The maximum thickness of the composite structure is T1, wherein 0.5*T0≤T1≤0.95*T0.

[0145] For some examples, see Figure 8 As shown, after the expansion body 50 absorbs heat and expands, the maximum thickness of the composite structure formed by the substrate 40 and the expansion body 50 is T2, wherein T2 is greater than T0, thereby ensuring that the expansion body 50 can push the battery assembly 30 to move after expansion and completely separate the first electrical connection contact 211 from the second electrical connection contact 32, thereby reducing the possibility of a virtual connection between the first electrical connection contact 211 and the second electrical connection contact 32 due to poor separation.

[0146] In some examples, the maximum thickness of the composite structure formed by the substrate 40 and the expansion body 50 is T2, wherein 1.2*T0≤T2≤1.8*T0.

[0147] In some possible implementations, see Figure 17 and Figure 18 As shown, the battery assembly 30 also includes a first magnetic member 34. The device body 20 includes a second magnetic member 23. The first magnetic member 34 is attracted to the second magnetic member 23 to connect the battery assembly 30 and the device body 20. When the expansion body 50 expands, it pushes the battery assembly 30 away from the device body 20, so that the first magnetic member 34 is separated from the second magnetic member 23, and the first electrical connection contact 211 is separated from the second electrical connection contact 32.

[0148] The battery assembly 30 and the device main body 20 can be connected and fixed by the magnetic attraction force generated between the first magnetic attracting member 34 and the second magnetic attracting member 23. On the one hand, it is beneficial to reduce the operation difficulty during the connection process of the battery assembly 30 and the device main body 20; on the other hand, it can facilitate the precise docking of the first electrical connection contact 211 and the second electrical connection contact 32, improving the convenience of the electrical connection operation between the battery assembly 30 and the device main body 20.

[0149] After the expansion body 50 absorbs heat and expands, the expansion body 50 exerts a force on the device main body 20 to overcome the magnetic attraction force between the first magnetic attracting member 34 and the second magnetic attracting member 23. When the force between the expansion body 50 and the device main body 20 is greater than the magnetic attraction force between the first magnetic attracting member 34 and the second magnetic attracting member 23, the first magnetic attracting member 34 and the second magnetic attracting member 23 are separated, and at the same time, the first electrical connection contact 211 and the second electrical connection contact 32 are separated, so that the battery assembly 30 is disconnected from the device main body 20.

[0150] In some examples, the device main body 20 includes temple arms 21. The housing 31 is detachably connected to the temple arms 21. The second magnetic attracting member 23 is provided on the temple arms 21. The battery assembly 30 and the temple arms 21 can be connected and fixed by the magnetic attraction force generated between the first magnetic attracting member 34 and the second magnetic attracting member 23.

[0151] In some examples, both the first magnetic attracting member 34 and the second magnetic attracting member 23 can be permanent magnets.

[0152] In some examples, the first magnetic attracting member 34 is disposed close to the second electrical connection contact 32. The second magnetic attracting member 23 is disposed close to the first electrical connection contact 211. Exemplarily, the first magnetic attracting member 34 can be annular. The second electrical connection contact 32 is located inside the first magnetic attracting member 34. The second magnetic attracting member 23 can be annular. The first electrical connection contact 211 is located inside the second magnetic attracting member 23.

[0153] In some implementable ways, refer to Figure 19 As shown, the expansion body 50 includes an elastic housing 51 and a thermal expansion material 52. The elastic housing 51 has a closed cavity. The thermal expansion material 52 is disposed in the closed cavity. The thermal expansion material 52 absorbs heat and expands, causing the elastic housing 51 to expand and exert a force on the battery assembly 30.

[0154] After the expansion body 50 absorbs heat, its temperature rises. When the temperature exceeds the expansion temperature threshold of the thermal expansion material 52, the thermal expansion material 52 expands. When the expansion body 50 absorbs heat, the elastic housing 51 softens, while the thermal expansion material 52 absorbs heat and expands, so that the softened elastic housing 51 can expand synchronously with the thermal expansion material 52, increasing in volume. The elastic housing 51 has good sealing performance, making it difficult for the thermal expansion material 52 to leak, which is beneficial to improving the use safety of the expansion body 50.

[0155] In some examples, the material of the elastic shell 51 may be a thermoplastic polymer. Exemplarily, the material of the elastic shell 51 may include, but is not limited to, polypropylene (PP), polyethylene (PE), and thermoplastic acrylate polymers. After the elastic shell 51 expands, the overall volume of the elastic shell 51 increases. After the elastic shell 51 cools, the elastic shell 51 may not shrink, so that the elastic shell 51 remains at the expanded volume, so that the elastic shell 51 can effectively prevent the battery assembly 30 from approaching the device body 20 again, reducing the possibility of the first electrical connection contact 211 and the second electrical connection contact 32 re-contacting.

[0156] In some examples, the thermal expansion material 52 may include a low boiling point solvent. For example, at room temperature, the thermal expansion material 52 may be in a liquid state. When the temperature exceeds an expansion temperature threshold, the thermal expansion material 52 changes from a liquid state to a gaseous state, thereby achieving volume expansion. The expansion temperature threshold may be the boiling point of the thermal expansion material 52. For example, the thermal expansion material 52 may include, but is not limited to, liquid alkane gas and liquid alkyne gas.

[0157] In some examples, the elastic shell 51 may be spherical. The expansion body 50 may be a thermally expandable microsphere. The elastic shell 51 has a regular shape and a relatively balanced overall force, which is conducive to maintaining its own shape stability when no expansion occurs. Exemplarily, the diameter of the elastic shell 51 may be 10 micrometers (μm) to 50 micrometers. After the expansion body 50 absorbs heat and expands, the diameter of the elastic shell 51 may reach 400 micrometers to 4000 micrometers.

[0158] In some achievable manners, the expansion temperature threshold of the thermal expansion material 52 is 60 degrees Celsius (° C.) to 100 degrees Celsius.

[0159] When the expansion temperature threshold of the thermal expansion material 52 is less than 60 degrees Celsius, the expansion temperature threshold of the thermal expansion material 52 is relatively low. When the battery assembly 30 works normally in an environment with a relatively high temperature, there is a possibility that the heat released by the battery assembly 30 cannot be dissipated in time, causing the expansion body 50 to absorb more heat and expand, thereby causing the expansion body 50 to be triggered incorrectly, resulting in the inability to use the wearable device 10 normally, affecting the user experience. When the expansion temperature threshold of the thermal expansion material 52 is greater than 100 degrees Celsius, the expansion temperature threshold of the thermal expansion material 52 is relatively high. When the battery assembly 30 fails, the temperature required for the expansion body 50 to expand is relatively high, and there is a possibility that the human skin will experience a high temperature burning sensation, affecting the user experience. In the embodiment of the present application, the expansion temperature threshold of the thermal expansion material 52 is 60 degrees Celsius to 100 degrees Celsius, which is conducive to reducing the possibility of the above-mentioned problems.

[0160] In some examples, the expansion temperature threshold of the thermal expansion material 52 may be 80 degrees Celsius to 90 degrees Celsius.

[0161] The embodiment of the present application also provides a battery device, which includes a battery assembly 30 and an expansion body 50. The battery assembly 30 includes a shell 31 and a second electrical connection contact 32. The shell 31 is provided with the second electrical connection contact 32. The expansion body 50 is provided on the shell 31. The expansion body 50 is configured to absorb heat and expand. The expansion body 50 and the second electrical connection contact 32 are located on the same side of the shell 31.

[0162] The battery device of the embodiment of the present application can be applied to the wearable device 10. When the battery device is applied to the wearable device 10, the battery assembly 30 can be arranged outside the device body 20. The battery assembly 30 is an external power source. The second electrical connection contact 32 of the battery assembly 30 is configured to be electrically connected to the first electrical connection contact 211. The battery assembly 30 is not affected or limited by the size of the device body 20, so the battery cell in the battery assembly 30 can be designed to have a relatively large battery capacity, which is conducive to improving the endurance of the wearable device 10 and improving the user experience satisfaction.

[0163] When the battery device is applied to the wearable device 10, the expansion body 50 is located between the outer shell 31 and the device body 20. The expansion body 50 is an endothermic expansion structure. After the expansion body 50 absorbs more heat, it can expand and deform. When the battery assembly 30 works normally, the expansion body 50 itself does not expand and deform. When the battery assembly 30 fails and its own temperature rises significantly, the expansion body 50 expands after absorbing more heat. When the expansion body 50 expands and deforms, it can apply a force to the battery assembly 30, so that the battery assembly 30 can move away from the device body 20 under the push of the expansion body 50, and the first electrical connection contact 211 and the second electrical connection contact 32 are separated, so that the battery assembly 30 and the device body 20 are disconnected from the electrical connection state in time, thereby improving the safety of the battery assembly 30.

[0164] In some examples, the housing 31 is provided with a substrate 40. The substrate 40 is provided with a receiving groove 401, and the expansion body 50 is provided in the receiving groove 401. The substrate 40 can provide a mounting base for the expansion body 50, so that the integral structure formed by the substrate 40 and the expansion body 50 is arranged between the housing 31 and the device body 20, thereby improving the installation convenience of the expansion body 50, and the substrate 40 can provide protection for the expansion body 50.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A wearable device, characterized in that: include: a device body including a first electrical connection contact; A battery assembly, comprising a housing detachably connected to the device body, wherein a second electrical connection contact is disposed on a side of the housing facing the device body, and the first electrical connection contact is electrically connected to the second electrical connection contact; An expansion body is arranged between the shell and the device body, and is configured to absorb heat and expand when the temperature is greater than 40 degrees Celsius. When the expansion body expands, it pushes the battery assembly away from the device body to separate the first electrical connection contact from the second electrical connection contact.

2. The wearable device according to claim 1, characterized in that: The wearable device comprises a substrate, wherein the substrate is arranged between the housing and the device body, the substrate comprises a receiving groove, and the expansion body is arranged in the receiving groove.

3. The wearable device according to claim 2, characterized in that: The substrate is connected to the housing, and the receiving groove has an opening facing the device body.

4. The wearable device according to claim 3, characterized in that: The substrate is bonded to the surface of the housing facing the device body; or, The housing comprises a top surface and a bottom surface opposite to each other, the top surface and the bottom surface are respectively provided with first engaging protrusions, the substrate comprises an engaging slot, and the first engaging protrusion engages with the engaging slot; or, The housing comprises a top surface and a bottom surface opposite to each other. Second clamping protrusions are respectively arranged on two opposite sides of the substrate. The second clamping protrusions are respectively clamped on the top surface and the bottom surface.

5. The wearable device according to claim 2, characterized in that: The substrate is connected to the device body, and the receiving groove has an opening facing the housing.

6. The wearable device according to claim 2, characterized in that: The substrate comprises a plurality of the accommodating grooves, the plurality of the accommodating grooves are distributed in an array, and the expansion body is arranged in each of the accommodating grooves.

7. The wearable device according to claim 2, characterized in that: The receiving groove is a through hole, and the expansion body is in contact with the shell.

8. The wearable device according to claim 7, characterized in that: The substrate is connected to the housing, the receiving groove is a tapered hole, and the opening area of ​​the receiving groove toward the device body is larger than the opening area of ​​the receiving groove toward the housing; or, The substrate is connected to the device body, the receiving groove is a tapered hole, and the opening area of ​​the receiving groove toward the shell is larger than the opening area of ​​the receiving groove toward the device body.

9. The wearable device according to claim 2, characterized in that: The substrate is connected to the housing, and there is a gap between the expansion body and the device body; or, The substrate is connected to the device body, and a gap is provided between the expansion body and the housing.

10. The wearable device according to claim 9, characterized in that: The gap has a value ranging from 0.1 mm to 2 mm.

11. The wearable device according to claim 2, characterized in that: The second electrical connection contact protrudes out of the housing toward the device body, and the protruding height of the second electrical connection contact is T0. The substrate and the expansion body form a composite structure, and the maximum thickness of the composite structure is T1, wherein T0 is greater than T1.

12. The wearable device according to claim 1, characterized in that: The wearable device includes a limiting member, which includes a connecting plate and a stop plate. The connecting plate is connected to the surface of the device body facing the shell, and the stop plate is arranged at the end of the connecting plate away from the device body. There are two limiting members, and the shell is arranged between the two limiting members. The shell includes two opposite side surfaces, and limiting protrusions are arranged on the two side surfaces. The limiting protrusion is located between the stop plate and the device body, and there is a gap between the limiting protrusion and the stop plate. When the limiting protrusion contacts the stop plate, the stop plate is used to limit the movement of the battery assembly in the direction away from the device body.

13. The wearable device according to claim 12, characterized in that: The limiting member includes a supporting plate, the housing includes a top surface and a bottom surface that are opposite to each other, the supporting plate is located on a side of the bottom surface that is opposite to the top surface, and the supporting plate is used to support the battery assembly.

14. The wearable device according to claim 1, characterized in that: The battery assembly also includes a first magnetic component, and the device body includes a second magnetic component. The first magnetic component and the second magnetic component are adsorbed to connect the battery assembly and the device body. When the expansion body expands, it pushes the battery assembly away from the device body to separate the first magnetic component from the second magnetic component.

15. The wearable device according to any one of claims 1 to 14, characterized in that: The expansion body comprises an elastic shell and a heat expansion material. The elastic shell has a closed cavity. The heat expansion material is arranged in the closed cavity. The heat expansion material absorbs heat and expands, so that the elastic shell expands and applies a force to the device body.

16. The wearable device according to claim 15, characterized in that: The elastic shell is spherical.

17. The wearable device according to claim 15, characterized in that: The expansion temperature threshold of the thermal expansion material is 60 degrees Celsius to 100 degrees Celsius.

18. The wearable device according to any one of claims 1 to 14, characterized in that: The device body comprises a pair of smart glasses having temples, the temples are provided with the first electrical connection contacts, the shell is detachably connected to the temples, and the expansion body is provided between the shell and the temples.

19. A battery device, characterized in that: include: A battery assembly, comprising a housing and a second electrical connection contact, wherein the housing is provided with the second electrical connection contact; An expansion body is disposed on the shell, and the expansion body is configured to absorb heat and expand when the temperature is greater than 40 degrees Celsius. The expansion body and the second electrical connection contact are located on the same side of the shell.

20. The battery device according to claim 19, characterized in that The shell is provided with a substrate, the substrate is provided with a receiving groove, and the expansion body is arranged in the receiving groove.

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