Anti-disassembly battery device and electronic equipment

Abstract

The utility model relates to the technical field of batteries, and provides an anti-disassembly battery device and electronic equipment. The anti-disassembly battery device comprises: a housing, wherein one end of the housing in a first direction is provided with an assembly port; the interface plate covers the assembly port in a sealing manner and is fixedly connected with the shell; the battery cell assembly is arranged in the shell and provided with at least one power supply cable, a part of the power supply cable is fixed to the side, facing the interior of the shell, of the interface board in an adhesive mode, and the power supply cable can be broken due to stress after the interface board is detached, so that the battery cell assembly cannot supply power to the outside. According to the technical scheme, when the interface board is detached from the shell, the power supply cable is pulled and broken, so that the battery cell assembly cannot supply power to the outside, a self-destruction function and an anti-detachment effect are realized, the possibility that the battery cell assembly is illegally modified and reused is reduced, the safety is higher, the overall structure is simple, and the cost is low. No complex protection structure or control system is needed, machining and manufacturing are easy, and cost can be effectively saved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to an anti-disassembly battery device and electronic equipment. Background Art

[0002] Currently, the batteries used in common electronic devices are usually detachable structures, that is, the battery cells can be taken out after the battery shell is disassembled. Although such detachable battery structures are convenient for assembly, they also provide convenience for illegal battery modification. Criminals may remove the battery from the electronic device, modify it, and then install it back into the electronic device. Modified electronic devices pose a major safety hazard in circulation. For example, the pager explosion incident in the Middle East posed a major threat to the safety of public life and property. Utility Model Content

[0003] In order to solve the problems that the structure of existing battery products is easy to disassemble, the battery cells are easily illegally modified, and there are major safety hazards, the present application provides an anti-disassembly battery device and electronic equipment.

[0004] In an embodiment of the first aspect of the technical solution of the present application, an anti-disassembly battery device is provided, including: a shell, the shell having an assembly opening at one end in a first direction; an interface board, the interface board is sealed at the assembly opening and fixedly connected to the shell; a battery cell assembly, arranged in the shell, the battery cell assembly having at least one power supply cable, a portion of the power supply cable is bonded and fixed to the side of the interface board facing the inside of the shell, and the power supply cable can be disconnected by force after the interface board is disassembled, so that the battery cell assembly cannot supply power to the outside.

[0005] In a further embodiment of the present application, the power supply cable includes an adhesive portion, which is fixed to the interface board by bonding the gel layer, and the adhesive portion is embedded in the gel layer; wherein the adhesive portion is arranged in a straight line and / or a curved shape.

[0006] In a further embodiment of the present application, the bonding portion includes a plurality of straight line segments and a plurality of curved line segments alternately arranged; the plurality of straight line segments are spaced apart in the second direction, and each straight line segment extends along the third direction, and any two adjacent straight line segments are connected by a corresponding curved line segment, so that the bonding portion is arranged in a serpentine shape; wherein the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the second direction and the first direction.

[0007] In a further embodiment of the present application, the two ends of the adhesive portion are respectively located at the two ends of the interface board in the second direction or the third direction; or, the two ends of the adhesive portion are located at the same end of the interface board in the second direction or the third direction.

[0008] In a further embodiment of the present application, the power supply cable also includes a head end connection portion and a tail end connection portion, the head end connection portion is connected to one end of the adhesive portion, and the tail end connection portion is connected to the other end of the adhesive portion; wherein the head end connection portion and / or the tail end connection portion has a breakable area, and the tensile strength of the breakable area is lower than the tensile strength of other areas.

[0009] In a further embodiment of the present application, the power supply cable includes a wire core and an insulating sleeve, and the insulating sleeve is covered on the outside of the wire core; wherein, in the easily breakable area, the insulating sleeve includes an independent first sleeve and a second sleeve, the inner diameter of the first sleeve is larger than the outer diameter of the second sleeve, and the second sleeve extends into the first sleeve, and the wire core is passed through the first sleeve and the second sleeve.

[0010] In a further embodiment of the present application, the length of the head end connection portion is less than a first length threshold; the length of the tail end connection portion is less than a second length threshold; wherein, when the interface board is separated from the assembly port, the head end connection portion and / or the tail end connection portion is disconnected.

[0011] In a further embodiment of the present application, the interface plate has a raised structure on one side facing the inside of the shell, the raised structure is separated from the adhesive portion and embedded in the gel layer; and / or, the shell is an integrated structure that has been ultrasonically treated, and other areas on the shell except the assembly port are closed structures.

[0012] In a further embodiment of the present application, the battery cell assembly includes: a battery cell body; a battery protection board, the battery protection board having a protection circuit, the protection circuit being electrically connected to the battery cell body for overload protection of the battery cell body; wherein the protection circuit includes a protection IC and a MOS tube, and the power supply cable is the power supply line of the protection IC.

[0013] An embodiment of the technical solution of the second aspect of the present application further provides an electronic device, comprising: the anti-disassembly battery device in any embodiment of the first aspect mentioned above.

[0014] The beneficial effects of the above technical solution of this application are:

[0015] According to the battery device in the present application, the power supply cable of the battery cell assembly is bonded and fixed to the interface board through structural improvement and optimization. When the interface board is removed from the shell, the power supply cable will be pulled and disconnected at the same time, thereby causing the battery cell assembly to be unable to supply power to the outside. The self-destruction function is used to achieve the anti-disassembly effect of the battery device, which can greatly reduce the possibility of the battery cell assembly being taken out and illegally modified, thereby reducing safety risks. Moreover, the overall structure of the battery device of the present application is relatively simple, does not require complex protective structures and control systems, is easy to process and manufacture, and can effectively save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a front view of an anti-disassembly battery device in one embodiment of the present application;

[0017] Figure 2 A top view of an anti-disassembly battery device in one embodiment of the present application;

[0018] Figure 3 A cross-sectional view of an anti-disassembly battery device in one embodiment of the present application;

[0019] Figure 4 A cross-sectional view of an anti-disassembly battery device in one embodiment of the present application (a state where the interface board is disassembled);

[0020] Figure 5 This is a schematic diagram of the arrangement of power supply cables in an embodiment of the present application;

[0021] Figure 6 This is another cross-sectional view of an arrangement of a power supply cable in an embodiment of the present application;

[0022] Figure 7 This is a partial cross-sectional view of a fragile area of ​​a power supply cable in an embodiment of the present application.

[0023] Figure 8 This is a schematic block diagram of an electronic device in an embodiment of the present application.

[0024] In the above drawings, arrow F1 indicates a first direction, arrow F2 indicates a second direction, and arrow F3 indicates a third direction.

[0025] Description of reference numerals:

[0026] 100 anti-disassembly battery device;

[0027] 1 housing, 11 assembly port, 2 interface board, 21 raised structure, 3 battery cell assembly, 31 battery cell body, 32 battery protection board, 33 protection circuit, 331 protection IC, 332 MOS tube, 34 power supply cable, 341 bonding portion, 3411 straight segment, 3412 curved segment, 342 head end connection portion, 343 tail end connection portion, 345 fragile area, 346 wire core, 347 insulation sleeve, 3471 first sleeve, 3472 second sleeve, 35 gel layer;

[0028] 500 electronic devices. DETAILED DESCRIPTION

[0029] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0030] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various implementations, and the operational steps involved in each embodiment may be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a particular embodiment and do not imply a required composition and / or sequence.

[0031] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0032] The anti-disassembly battery device provided by the present application optimizes and improves the overall structure. The power supply cable of the battery cell assembly is bonded and fixed to the interface board connected to the assembly port of the shell. When in use, once the interface board is removed, the power supply cable is broken by external force, so that the power supply circuit of the battery cell assembly is disconnected and power cannot be supplied to the outside, thereby realizing the self-destruction function of the battery cell, thereby preventing the battery device from being disassembled at will, reducing the possibility of the battery cell being illegally modified, and achieving the anti-disassembly effect of the battery device, which is beneficial to reducing safety risks. In addition, the overall structure is relatively simple, and there is no need to set up additional complex protection mechanisms and control systems. It is easy to process and produce, which is beneficial to saving costs.

[0033] The following are some embodiments of the anti-disassembly battery device and electronic device provided by this application.

[0034] In an embodiment of the first aspect of the present application, Figure 1 、 Figure 2 and Figure 3As shown, the anti-disassembly battery device 100 includes a shell 1, an interface board 2 and a battery cell assembly 3. The shell 1 serves as a accommodating structure for the battery cell assembly 3 and has an accommodating space inside; the shell 1 has an assembly port 11 at one end in the first direction, and the battery cell assembly 3 can be installed into the shell 1 through the assembly port 11; the interface board 2 is arranged at the assembly port 11 of the shell 1 and is fixedly connected to the shell 1 to cover the assembly port 11, so that the battery cell assembly 3 is in a closed space after assembly is completed, so as to protect the battery cell assembly 3. Among them, the battery cell assembly 3 has at least one power supply cable 34, and part of the power supply cable 34 is led out from the battery cell assembly 3 and is bonded and fixed to the side of the interface board 2 facing the inside of the shell 1, so that the power supply cable 34 and the interface board 2 are bound together. After the anti-disassembly battery device 100 leaves the factory, the interface board 2 has an anti-disassembly function. Once the interface board 2 is removed from the shell 1, as shown Figure 4 In the state shown in FIG, the power supply cable 34 bonded to the interface board 2 will be pulled and disconnected, causing the power supply cable 34 of the battery cell assembly 3 to fail and be unable to supply power to the outside.

[0035] It should be noted that, in actual application, the power supply cable 34 can be a power supply line in the protection circuit 33 of the battery assembly 3 (for example, a power supply line for protecting the IC), or other cables of the battery assembly 3; the number of power supply cables 34 bonded and fixed to the interface board 2 can be one or more. Conventional connection methods such as snap-on, screw-on, etc. can be used between the interface board 2 and the housing 1. In addition, the first direction can be as follows Figure 1 The first direction is the height direction of the housing 1 shown in FIG. 1 . Of course, depending on the structural form of the battery device, the first direction may also be other directions of the housing 1 .

[0036] It is understandable that in the batteries used in common electronic devices such as mobile phones and tablets, the battery casing can be opened and the battery cell can be easily taken out, which provides convenience for criminals to illegally modify the battery cell. If the battery cell is illegally modified and then installed in the battery casing for continued use, it will cause major safety hazards to the electronic equipment and may threaten the safety of public life and property.

[0037] It should be noted that although some battery products on the market also have certain anti-disassembly functions, such battery devices require the installation of more complex protection mechanisms and control systems, which increases the difficulty of battery design and processing, and also leads to a significant increase in battery costs, which is not conducive to application and promotion.

[0038] The anti-disassembly battery device 100 in this embodiment has an optimized and improved structure, so that the power supply cable 34 of the battery cell assembly 3 is bonded and fixed to the interface board 2. When the interface board 2 is removed from the shell 1, the power supply cable 34 will be pulled and disconnected at the same time, thereby causing the battery cell assembly 3 to be unable to supply power to the outside. The self-destruction function is used to achieve the anti-disassembly effect of the battery device, which can greatly reduce the possibility of the battery cell assembly 3 being taken out and illegally modified, thereby reducing safety risks. Moreover, the overall structure of the battery device of the present application is relatively simple, does not require a complex protective structure and control system, is easy to process and manufacture, can effectively save costs, and is easy to promote and apply.

[0039] In a further embodiment of the present application, Figure 1 and Figure 3 As shown, the power cable 34 includes an adhesive portion 341. During assembly, the adhesive portion 341 is connected to the interface board 2 by gluing. After the adhesive solidifies, a gel layer 35 is formed, and the adhesive portion 341 is embedded in the gel layer 35, thereby fixing the power cable 34 to the interface board 2 as a whole. It should be noted that the surface of the power cable 34 is covered with an insulating layer, and the adhesive fixation does not affect normal power transmission. Specifically, on the interface board 2, the adhesive portion 341 of the power cable 34 is arranged in a straight line and / or a curved line. That is, the adhesive portion 341 can be arranged in a straight line or a curved line, or it can be arranged partially in a straight line and partially in a curved line. The specific arrangement can be based on actual assembly requirements. By arranging the adhesive portion 341 appropriately, limited space can be fully utilized, the contact area between the power cable 34 and the interface board 2 is increased, and the bonding strength is improved to prevent the power cable 34 from separating from the interface board 2, thereby preventing the anti-disassembly function from failing.

[0040] Furthermore, if Figure 3 、 Figure 5 and Figure 6 In the example, the bonding portion 341 specifically includes multiple straight segments 3411 and multiple curved segments 3412, with the straight segments 3411 and curved segments 3412 alternately arranged and sequentially connected. The second direction is perpendicular to the first direction and can be the thickness direction of the housing 1. The third direction is perpendicular to both the first and second directions and can be the width direction of the housing 1. The multiple straight segments 3411 of the bonding portion 341 are spaced apart in the second direction, and each straight segment 3411 extends along the third direction, forming multiple rows in parallel. A curved segment 3412 is provided between any two adjacent straight segments 3411, connecting the corresponding ends of the two adjacent straight segments 3411. The multiple curved segments 3412 are alternately connected, one left and one right, so that the bonding portion 341 forms a serpentine arrangement. This arrangement maximizes the contact area between the bonding portion 341 and the interface board 2, further enhancing bonding strength.

[0041] Furthermore, in a specific implementation, as Figure 5 In the example, the two ends of the bonding portion 341 are respectively located at the two ends of the interface board 2 in the third direction, that is, the head end and the tail end of the bonding portion 341 are respectively located at the left and right ends, then the power supply cable 34 can be connected to both ends of the interface board 2 in the third direction at the same time, such as Figure 3 When the interface board 2 is disassembled at any end in the third direction, the power supply cable 34 bonded to the corresponding end will be pulled and disconnected, and the anti-disassembly range is larger. Figure 3 and Figure 5 In the example, since the third direction is the width direction of the shell 1, the size in the third direction is larger than that in the second direction, and the two ends of the bonding portion 341 are arranged at the two ends in the third direction, which can be adapted to the extension direction of the straight segment 3411 of the bonding portion 341, and can further increase the contact area between the bonding portion 341 and the interface board 2.

[0042] In another specific implementation, Figure 6 In the example shown in FIG, the ends of the adhesive portion 341 of the power supply cable 34 are arranged at the same end of the interface board 2 in the third direction. That is, the head and tail ends of the adhesive portion 341 are arranged in a serpentine pattern, facing the same end. When the interface board 2 and the areas corresponding to the head and tail ends of the adhesive portion 341 are removed, the power supply cable 34 is pulled and disconnected. This arrangement makes the connection ends of the power supply cable 34 more centralized, facilitating connection and assembly with the corresponding components in the battery cell assembly 3.

[0043] Of course, in practical applications, depending on specific assembly requirements of the battery, the two ends of the adhesive portion 341 may also be disposed at the same end or both ends of the interface board 2 in the second direction.

[0044] Alternatively, the plurality of straight segments 3411 of the bonding portion 341 may be spaced apart in the third direction, with each straight segment 3411 extending along the second direction. Any two adjacent straight segments 3411 are connected by corresponding curved segments 3412, so that the bonding portion 341 forms a serpentine arrangement. This also increases the contact area between the power supply cable 34 and the interface board 2, thereby improving the connection strength. In actual applications, an appropriate wiring method may be adopted according to specific assembly requirements, and this will not be further described here.

[0045] In a further embodiment of the present application, Figures 3 to 6As shown, the power supply cable 34 specifically includes a head end connection portion 342, an adhesive portion 341, and a tail end connection portion 343. The head end connection portion 342 is connected to one end of the adhesive portion 341, and the tail end connection portion 343 is connected to the other end of the adhesive portion 341; specifically, the power supply cable 34 is an integrated structure, and can be divided into the head end connection portion 342, the adhesive portion 341, and the tail end connection portion 343 by corresponding wiring methods. Figure 5 and Figure 6 In the example, there is a fragile area 345 in the head end connection part 342 and the tail end connection part 343, and the tensile strength of the fragile area 345 is lower than the tensile strength of other areas on the power supply cable 34. When the power supply cable 34 is pulled, the fragile area 345 is easier to break due to its relatively low tensile strength and is more sensitive, thereby further enhancing the anti-disassembly performance.

[0046] It is understood that, generally, different regions of a cable have substantially similar structures, and when pulled, the force distribution is relatively uniform, thus being able to withstand a certain degree of tension. In this embodiment, by providing the fragile region 345, once the power cable 34 is pulled, stress concentration occurs in the fragile region 345, making it more likely to break.

[0047] It should be noted that, according to actual use requirements, the breakable area 345 may be provided in only one of the head end connection portion 342 or the tail end connection portion 343 of the power supply cable 34 .

[0048] Furthermore, if Figure 7 In the example, the power supply cable 34 specifically includes a core 346 and an insulating sleeve 347. The insulating sleeve 347 is coated on the outside of the core 346 for its insulation isolation. Figure 7 For example, in the easily broken area 345 of the head end connection part 342, the insulating sleeve 347 includes a first sleeve 3471 and a second sleeve 3472 that are independent of each other, and the wire core 346 is inserted into the first sleeve 3471 and the second sleeve 3472; the inner diameter of the first sleeve 3471 is larger than the outer diameter of the second sleeve 3472, and the second sleeve 3472 extends into the first sleeve 3471 to form a nested form. Through the above arrangement, the insulating sleeve 347 can still maintain an insulated isolation state for the wire core 346, and once the power supply cable 34 is pulled, since there is no fixation between the first sleeve 3471 and the second sleeve 3472, they do not bear the corresponding tension, so that the wire core 346 directly bears the tension, is more likely to be broken, and has a better anti-disassembly effect. It should be noted that the structure of the easily broken area 345 of the tail end connection part 343 is similar to this and will not be repeated here.

[0049] In a further embodiment of the present application, Figure 3 and Figure 4As shown, the length of the head end connection portion 342 of the power supply cable 34 is less than the first length threshold, and the length of the tail end connection portion 343 is less than the second length threshold. When the interface board 2 is removed from the assembly opening 11 of the housing 1 and is in a separated state from the assembly opening 11, as shown in FIG. Figure 4 In the state shown in FIG, at least one of the head-end connection portion 342 and the tail-end connection portion 343 of the power supply cable 34 is disconnected by tension. The first and second length thresholds are set based on the specific dimensions and assembly requirements of the battery cell assembly 3, housing 1, and interface board 2, so that the head-end connection portion 342 and the tail-end connection portion 343 have a small redundant length after assembly. When the interface board 2 is disassembled and moved away from the battery cell assembly 3 relative to the assembly port 11, if the movement distance exceeds the first length threshold, the head-end connection portion 342 is disconnected, and if the movement distance exceeds the second length threshold, the tail-end connection portion 343 is disconnected.

[0050] In a further embodiment of the present application, Figure 5 and Figure 6 In the example shown in FIG, the interface board 2 has a protruding structure 21 on the surface facing the inside of the housing 1. The protruding structure 21 is embedded in the gel layer 35 to improve the bonding strength between the gel layer 35 and the interface board 2. The number of the protruding structures 21 can be one or more, and the protruding structure 21 and the bonding portion 341 of the power supply cable 34 are spaced apart to avoid affecting the wiring of the bonding portion 341. Figure 5 For example, a plurality of protruding structures 21 may be disposed at intervals between adjacent straight segments 3411 of the bonding portion 341 to fully utilize the existing space without obstructing the straight segments 3411 .

[0051] In a further embodiment of the present application, Figures 1 to 3 As shown, the housing 1 is a one-piece structure that has been ultrasonically treated. The outer surface of the housing 1, except for the assembly opening 11, is a closed structure without any seams or seam-like structures, to prevent users from mistakenly mistaking it for a disassembly opening and performing an inadvertent disassembly operation. Specifically, the housing 1 can be a one-piece structure formed during processing, or it can be a one-piece structure formed by welding or other means of a split plate structure. Due to the ultrasonic treatment, the appearance of the housing 1 is not noticeably different.

[0052] In a further embodiment of the present application, Figure 3As shown, the battery cell assembly 3 specifically includes a battery cell body 31 and a battery protection board 32. The battery cell body 31 serves as the main power supply, and the battery protection board 32 is provided with a corresponding protection circuit 33. The protection circuit 33 is electrically connected to the battery cell body 31. The battery cell body 31 supplies power to the electrical device through the battery protection board 32. The protection circuit 33 of the battery protection board 32 provides overload protection for the battery cell body 31 to prevent damage to the battery cell body 31 caused by overcurrent or overvoltage during use. Among them, the protection circuit 33 is provided with a corresponding protection IC331 (Integrated Circuit, IC) and a MOS tube 332 (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET, Metal-Oxide Semiconductor Field-Effect Transistor), and the power supply cable 34 is specifically the power supply line of the protection IC331; when the power supply cable 34 is disconnected, the power supply circuit of the protection IC331 is disconnected, and the protection IC331 stops working, so that the MOS tube 332 in the protection circuit 33 cannot be turned on, and then the battery body 31 cannot supply power to the outside through the battery protection board 32, and the battery cannot work normally, which has a disassembly self-destruction effect.

[0053] It should be noted that the specific circuit connection method of the protection circuit 33 is a conventional connection and does not affect the realization of the anti-disassembly function of the anti-disassembly battery device 100 of the present application, so it will not be described in detail here. In addition, in actual application, the power supply cable 34 is not limited to the power supply line of the protection IC, but can also be the power supply line of other components in the battery cell assembly.

[0054] Furthermore, corresponding interface structures may be provided on the interface board 2, such as Figure 2 The example in the figure is used to facilitate charging and discharging connections or corresponding detection connections. The specific settings can be made according to actual usage needs and will not be repeated here.

[0055] In an embodiment of the second aspect of the present application, an electronic device 500 is provided, such as Figure 8 As shown, the electronic device 500 includes the anti-disassembly battery device 100 of any embodiment of the first aspect described above, so that the electronic device 500 is powered by the anti-disassembly battery device 100. After the electronic device 500 leaves the factory, if the user removes the anti-disassembly battery device 100 from the electronic device 500, once the interface board 2 of the anti-disassembly battery device 100 is removed from the assembly opening 11 of the housing 1, it will pull on the power supply cable 34 of the battery cell assembly 3, causing the power supply cable 34 to be disconnected. The battery cell assembly 3 can no longer supply power to the outside, and even if it is modified and installed in the electronic device 500, it will not function normally. This realizes the anti-disassembly and self-destruction functions of the battery cell assembly 3 to prevent the battery cell assembly 3 from being illegally modified and then installed back into the electronic device 500 for continued use, thereby creating a safety risk.

[0056] The electronic devices 500 include but are not limited to mobile phones, tablet computers, laptop computers, power banks, and handheld terminal devices.

[0057] It should be noted that, in actual applications, depending on the specific type, the electronic device 500 may also have corresponding devices or components, such as a display device, a communication component, etc.

[0058] In addition, the electronic device 500 in this embodiment should also include all the beneficial effects of the anti-disassembly battery device 100 in any embodiment of the first aspect above, which will not be repeated here.

[0059] A specific example of the anti-disassembly battery device 100 and the electronic device 500 of the present application is described below with reference to the accompanying drawings.

[0060] Please refer to Figures 1 to 8 The electronic device 500 of the present application includes a corresponding power-consuming device and an anti-disassembly battery device 100, and the power-consuming device is powered by the anti-disassembly battery device 100.

[0061] like Figure 1 、 Figure 2 and Figure 3 As shown, the anti-disassembly battery device 100 includes a housing 1, an interface board 2, and a cell assembly 3. The first direction is the height of the housing 1, the second direction is the thickness of the housing 1, and the third direction is the width of the housing 1. The housing 1 has an interior space for accommodating the cell assembly 3. The top end of the housing 1 in the first direction is open and forms an assembly opening 11. The housing 1 is a one-piece structure that has undergone ultrasonic treatment. Except for the assembly opening 11, the outer surface of the housing 1 is a closed structure with no seams or seam-like structures. The cell assembly 3 is disposed within the housing 1 and can be installed into the housing 1 through the assembly opening 11 during assembly. The interface board 2 is structured to match the assembly opening 11. The interface board 2 is positioned at the assembly opening 11 of the housing 1 and is fixedly connected to the housing 1. The interface board 2 seals the assembly opening 11, ensuring that the cell assembly 3 is enclosed in a closed space after assembly.

[0062] like Figure 3In the example in FIG, the battery cell assembly 3 specifically includes a battery cell body 31 and a battery protection board 32. The battery cell body 31 serves as the power supply body; the battery protection board 32 is correspondingly arranged at the top of the battery cell assembly 3 and corresponds to the interface board 2; the battery protection board 32 is provided with a corresponding protection circuit 33, which is electrically connected to the battery cell body 31, and the battery cell body 31 supplies power to the electrical equipment through the battery protection board 32; the protection circuit 33 is provided with a corresponding protection IC 331 and a MOS tube 332, and the protection circuit 33 of the battery protection board 32 provides overload protection for the battery cell body 31 to prevent overcurrent or overvoltage during use from causing damage to the battery cell body 31. The protection IC 331 is connected to a power cable 34, which includes a head-end connection portion 342, an adhesive portion 341, and a tail-end connection portion 343, which are connected in sequence. The head-end connection portion 342 and the tail-end connection portion 343 are connected to different components on the protection IC 331 to supply power to the protection IC 331. The adhesive portion 341 extends from the battery protection board 32 and is bonded to the side of the interface board 2 facing the interior of the housing 1. During assembly, the adhesive portion 341 is bonded to the interface board 2. Once the adhesive solidifies, a gel layer 35 is formed, into which the adhesive portion 341 is embedded, thereby securing the power cable 34 to the interface board 2.

[0063] like Figure 3 、 Figure 5 In the example, the bonding portion 341 specifically includes a plurality of straight line segments 3411 and a plurality of curved line segments 3412, for example Figure 5 The five straight segments 3411 and four curved segments 3412 are shown in FIG. The straight segments 3411 and the curved segments 3412 are arranged alternately and sequentially connected. The multiple straight segments 3411 are spaced apart in the second direction, and each straight segment 3411 extends along the third direction, forming multiple rows in parallel. A curved segment 3412 is provided between any two adjacent straight segments 3411. The multiple curved segments 3412 are alternately connected, one left and one right, so that the corresponding ends of two adjacent straight segments 3411 are connected by the curved segments 3412, so that the bonding portion 341 forms a serpentine arrangement as a whole. The surface of the interface board 2 facing the interior of the housing 1 has multiple raised structures 21. The raised structures 21 are spaced apart from the bonding portion 341 of the power supply cable 34 and embedded in the gel layer 35 to improve the bonding strength between the gel layer 35 and the interface board 2.

[0064] like Figure 3 and Figure 5In the example shown in FIG, the ends of the adhesive portion 341 are located at the two ends of the interface board 2 in the third direction, so that the head end connection portion 342 and the tail end connection portion 343 are located at the left and right ends of the interface board 2, respectively. The head end connection portion 342 and the tail end connection portion 343 each have a fragile region 345, and the tensile strength of the fragile region 345 is lower than the tensile strength of other regions on the power supply cable 34. When the power supply cable 34 is pulled, the fragile region 345 is more likely to break due to its relatively low tensile strength.

[0065] Specifically, if Figure 7 In the example shown, the power supply cable 34 specifically includes a core 346 and an insulating sleeve 347. The insulating sleeve 347 covers the outside of the core 346 to provide insulation and isolation. In the fragile area 345 of the head end connection 342, the insulating sleeve 347 includes a first sleeve 3471 and a second sleeve 3472 that are independent of each other. The core 346 is inserted into the first and second sleeves 3471, 3472. The inner diameter of the first sleeve 3471 is larger than the outer diameter of the second sleeve 3472, and the second sleeve 3472 extends into the first sleeve 3471, forming a nested structure. The fragile area 345 of the tail end connection 343 has the same structure.

[0066] like Figure 3 As shown, the length of the head end connection portion 342 of the power supply cable 34 is less than the first length threshold, and the length of the tail end connection portion 343 is less than the second length threshold. The first length threshold and the second length threshold are set according to the specific dimensions and assembly requirements of the battery cell assembly 3, the shell 1 and the interface board 2. When either end of the interface board 2 in the third direction is removed from the assembly opening 11 of the shell 1 and the movement distance exceeds the first length threshold, the head end connection portion 342 is pulled apart. If the movement distance exceeds the second length threshold, the tail end connection portion 343 is pulled apart. Figure 4 In the state shown in FIG. , since the first sleeve 3471 and the second sleeve 3472 in the fragile region 345 of the head-end connection portion 342 and the tail-end connection portion 343 are not subjected to tension, when the power supply cable 34 is pulled, the tension is directly borne by the core 346, causing the core 346 to quickly disconnect, making it impossible for the protection IC 331 to supply power normally, the corresponding MOS transistor 332 to be turned on, the protection circuit 33 to be in a disconnected state, and the battery body 31 to be unable to supply power to the outside, thereby achieving anti-disassembly and self-destruction effects.

[0067] When the power supply cable 34 is disconnected, the anti-disassembly battery device 100 is in a disabled state. Even if the user refits the battery cell body 31 and then installs it into the housing 1 , power cannot be supplied externally, so that the electronic device 500 cannot work normally.

[0068] In this embodiment, the electronic device 500 adopts an anti-disassembly battery device 100. By setting the protection IC 331 of the battery cell assembly 3, the power supply cable 34 is bonded and fixed to the interface board 2. When the interface board 2 is removed from the shell 1, the power supply cable 34 will be pulled and disconnected at the same time, thereby causing the battery cell assembly 3 to be unable to supply power to the outside. The self-destruct function is used to achieve the anti-disassembly effect of the battery device, which can greatly reduce the possibility of the battery cell assembly 3 being taken out and illegally modified, thereby reducing safety risks. Moreover, the overall structure of the battery device of the present application is relatively simple, does not require a complex protective structure and control system, is easy to process and manufacture, and can effectively save costs.

[0069] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A disassembly-resistant battery device, characterized in that: include: A housing, wherein one end of the housing in the first direction has an assembly opening; An interface plate, the interface plate is sealed at the assembly opening and fixedly connected to the housing; A battery cell assembly is arranged in the shell, and the battery cell assembly has at least one power supply cable. Part of the power supply cable is bonded and fixed to the side of the interface board facing the inside of the shell, and the power supply cable can be disconnected by force after the interface board is removed, so that the battery cell assembly cannot supply power to the outside.

2. The anti-disassembly battery device according to claim 1, characterized in that: The power supply cable includes an adhesive portion, the adhesive portion is fixed to the interface board through the adhesive of the gel layer, and the adhesive portion is embedded in the gel layer; Wherein, the bonding portion is arranged in a straight line and / or a curved line.

3. The anti-disassembly battery device according to claim 2, characterized in that: The bonding portion includes a plurality of straight segments and a plurality of curved segments arranged alternately; The plurality of straight segments are spaced apart in the second direction, and each of the straight segments extends along the third direction, and any two adjacent straight segments are connected by a corresponding curved segment, so that the bonding portion is arranged in a serpentine shape; The second direction is perpendicular to the first direction, and the third direction is perpendicular to both the second direction and the first direction.

4. The anti-disassembly battery device according to claim 3, characterized in that: The two ends of the bonding portion are respectively located at the two ends of the interface plate in the second direction or the third direction; or, Both ends of the adhesive portion are located at the same end of the interface plate in the second direction or the third direction.

5. The anti-disassembly battery device according to claim 2, characterized in that: The power supply cable further includes a head end connecting portion and a tail end connecting portion, wherein the head end connecting portion is connected to one end of the adhesive portion, and the tail end connecting portion is connected to the other end of the adhesive portion; Wherein, the head end connecting portion and / or the tail end connecting portion has a breakable region, and the tensile strength of the breakable region is lower than the tensile strength of other regions.

6. The anti-disassembly battery device according to claim 5, characterized in that: The power supply cable includes a wire core and an insulating sleeve, wherein the insulating sleeve is covered on the outside of the wire core; Among them, in the breakable area, the insulating sleeve includes an independent first sleeve and a second sleeve, the inner diameter of the first sleeve is larger than the outer diameter of the second sleeve, and the second sleeve extends into the first sleeve, and the wire core is inserted into the first sleeve and the second sleeve.

7. The anti-disassembly battery device according to claim 5, characterized in that: The length of the head end connecting portion is less than a first length threshold; The length of the tail end connecting portion is less than a second length threshold; Wherein, when the interface board is separated from the assembly port, the head end connection portion and / or the tail end connection portion is disconnected.

8. The anti-disassembly battery device according to claim 2, characterized in that: The interface plate has a protruding structure on one side facing the inside of the housing, the protruding structure is spaced apart from the bonding portion and embedded in the gel layer; and / or, The shell is an integrated structure that has been ultrasonically treated, and all areas of the shell except the assembly opening are closed structures.

9. The anti-disassembly battery device according to any one of claims 1 to 8, characterized in that: The battery core assembly includes: Battery cell body; A battery protection board having a protection circuit, the protection circuit being electrically connected to the battery cell body and configured to provide overload protection to the battery cell body; The protection circuit includes a protection IC and a MOS tube, and the power supply cable is a power supply line of the protection IC.

10. An electronic device, characterized in that: include: The anti-disassembly battery device according to any one of claims 1 to 9.

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