Battery structure and terminal device

Abstract

The utility model provides a kind of battery structure and terminal device, in the battery structure, first connecting sheet is bonded to the bottom of battery, first connecting sheet has first outer connection part;Second connecting sheet is used to bond battery compartment, second connecting sheet has the second outer connection part that protrude to the outside of first connecting sheet, and second outer connection part is at least partially located in the side of battery;First outer connection part and second outer connection part are used to connect external circuit;Electrolytic glue is bonded between first connecting sheet and second connecting sheet, electrolytic glue is used to debond when second connecting sheet and first connecting sheet are connected into conducting loop;Electrolytic glue has extension, extension is bonded between the side of battery and second outer connection part, and separates the side of battery and second outer connection part.Such setting, realize extension cover the outside of all edges of first connecting sheet, form insulating barrier structure using the insulating property of electrolytic glue, realize first connecting sheet and second connecting sheet physical isolation, effectively solve short-circuit risk.

Description

Technical Field

[0001] This utility model relates to the field of battery structure technology, and in particular to a battery structure and terminal device. Background Technology

[0002] In existing technologies, the battery structure involves mounting the battery within the battery compartment of a terminal device (such as a mobile phone, computer, or other electronic device) using a first connecting piece, electrolytic adhesive, and a second connecting piece. One of the first and second connecting pieces serves as a negative electrode film, and the other as a positive electrode film. The first connecting piece is used to bond the battery and the battery compartment. The first and second connecting pieces are connected by electrolytic adhesive, utilizing the adhesive's stickiness and its electrolytic properties in an electric field to facilitate battery assembly and disassembly. However, in existing battery structures, the electrolytic adhesive is flush with all outer edges of the first connecting piece, making it prone to short-circuiting with all outer edges of the first connecting piece when the second connecting piece is bent. Summary of the Invention

[0003] This utility model provides a battery structure and terminal device to solve the problem that in existing battery structures, the second connecting piece is prone to short-circuiting with all sides of the first connecting piece after bending.

[0004] A battery structure includes a battery, a first connecting piece, an electrolytic adhesive, and a second connecting piece; The first connecting piece is adhered to the bottom of the battery, and the first connecting piece has a first external portion; The second connecting piece is used to bond the battery compartment. The second connecting piece has a second external portion protruding from the first connecting piece. The second external portion is at least partially located on the side of the battery. The first external portion and the second external portion are used to connect external circuitry. The electrolytic adhesive is bonded between the first connecting piece and the second connecting piece, and the electrolytic adhesive is used to unbond the second connecting piece and the first connecting piece when they are connected into a conductive circuit. The electrolytic adhesive has an extension portion that is bonded between the side portion of the battery and the second external portion, and separates the side portion of the battery from the second external portion.

[0005] Preferably, the second connecting piece further has a second main body portion located at the bottom of the first connecting piece, and the second external portion wraps around the side of the battery and extends to the top of the battery.

[0006] Preferably, the second external portion includes a side connecting section and a top connecting section; the side connecting section is connected between the second main body portion and the top connecting section and is bonded to the side of the battery; the top connecting section is bonded to the top of the battery.

[0007] Preferably, the extension is bonded between at least one end of the side connecting section and the side of the battery; or, the extension is bonded between the side connecting section and the side of the battery, and between the top connecting section and the top of the battery.

[0008] Preferably, the battery structure further includes an adhesive component; the extension is bonded between at least one end of the side connecting section and the side of the battery; the adhesive component is bonded between the top connecting section and the top of the battery.

[0009] Preferably, the extension is bonded to one end of the side connecting section near the second main body portion; The adhesive component is bonded between the top connecting section and the top of the battery; or, One end of the adhesive is bonded between the top connecting section and the top of the battery, and the other end is bonded between the end of the side connecting section away from the second main body and the side of the battery.

[0010] Preferably, the shape of the second main body is the same as or different from the shape of the bottom of the battery; the second external part is a strip-shaped external part.

[0011] Preferably, the first connecting piece further has a first main body portion, which is adhered to the bottom of the battery, and the first external portion wraps around the side of the battery and extends to the top of the battery.

[0012] Preferably, one end of the first external part is bonded to the side of the battery, and the other end is bonded to the top of the battery.

[0013] Preferably, the shape of the first main body is the same as or different from the shape of the bottom of the battery; the first external part is a strip-shaped external part.

[0014] Preferably, the first connecting piece includes a first adhesive layer and a first conductive layer, wherein the first adhesive layer is bonded between the battery and the first conductive layer; The second connecting piece includes a second adhesive layer and a second conductive layer, wherein the second adhesive layer is used to bond the battery compartment and the second conductive layer; The electrolytic adhesive is disposed between the first conductive layer and the second conductive layer.

[0015] Preferably, the battery structure further includes a release film, which is disposed on the side of the second adhesive layer opposite to the second conductive layer.

[0016] A terminal device includes a battery compartment and a battery structure, wherein the battery structure is disposed within the battery compartment, and a second connecting piece is adhered to the battery compartment.

[0017] Preferably, the battery compartment is an insulated battery compartment.

[0018] The battery structure provided in this embodiment of the invention, by placing the extension portion between the battery and the second external portion, achieves coverage of all outer edges of the first connecting piece. Utilizing the insulating properties of the electrolytic adhesive to form an insulating barrier structure, it achieves physical isolation between the first and second connecting pieces, effectively solving the risk of short circuits. Simultaneously, the second external portion is also bonded to the side of the battery via the extension portion, thus effectively fixing the second external portion. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial structural diagram of the battery structure in one embodiment of the present invention; Figure 2 This is a first cross-sectional view of the terminal device in one embodiment of the present invention; Figure 3 This is a second sectional view of the terminal device in one embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0021] Among them, 1. Battery; 2. First connecting piece; 21. First external part; 22. First main body part; 23. First adhesive layer; 24. First conductive layer; 3. Electrolytic adhesive; 31. Extension part; 4. Second connecting piece; 41. Second external part; 411. Side connecting section; 412. Top connecting section; 42. Second main body part; 43. Second adhesive layer; 44. Second conductive layer; 5. Battery compartment; 6. Adhesive component. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] This utility model provides a battery structure, referring to... Figures 1-4 The battery includes a battery 1, a first connecting piece 2, an electrolytic adhesive 3, and a second connecting piece 4. The first connecting piece 2 is bonded to the bottom of the battery 1 and has a first external portion 21. The second connecting piece 4 is used to bond the battery compartment 5 and has a second external portion 41 protruding from the first connecting piece 2. The second external portion 41 is at least partially located on the side of the battery 1. The first external portion 21 and the second external portion 41 are used to connect an external circuit, so that the second connecting piece 4 and the first connecting piece 2 are connected into a conductive circuit. The electrolytic adhesive 3 is bonded to the first connecting piece 2 and the second connecting piece 4 and is used to unbond the second connecting piece 4 and the first connecting piece 2 when they are connected into a conductive circuit. The electrolytic adhesive 3 has an extension portion 31, which is bonded between the side of the battery 1 and the second external portion 41 and separates the side of the battery 1 from the second external portion 41.

[0026] As an example, the battery structure includes a battery 1, a first connecting piece 2, an electrolytic adhesive 3, and a second connecting piece 4. When the battery 1 needs to be installed, the electrolytic adhesive 3 is bonded between the first connecting piece 2 and the second connecting piece 4 to connect the first connecting piece 2 and the second connecting piece 4 together. The first connecting piece 2 is bonded to the bottom of the battery 1, and the second connecting piece 4 is bonded to the battery compartment 5 to install the battery 1 inside the battery compartment 5. When battery 1 needs to be removed, the electrolytic adhesive 3 dissolves when the second connecting piece 4 and the first connecting piece 2 are connected to the conductive circuit. Specifically, an electrical device is used to connect the first external part 21 and the second external part 41 to energize the second connecting piece 4 and the first connecting piece 2, connecting them to the conductive circuit. At this time, the electrolytic adhesive 3 between the second connecting piece 4 and the first connecting piece 2 can be electrolyzed and dissolved in the electric field environment, making it easier to remove battery 1 from the battery compartment 5. At the same time, the electrolytic adhesive 3 is melted and leaves no residue in the battery compartment 5. This reduces the difficulty of installing and removing battery 1 and improves the efficiency of battery 1 installation and removal. The first connecting piece 2 and the second connecting piece 4 are both metal films, such as aluminum films.

[0027] The first connecting piece 2 has a first external portion 21, and the second connecting piece 4 has a second external portion 41 protruding from the first connecting piece 2. The second external portion 41 is at least partially located on the side of the battery 1. The first external portion 21 and the second external portion 41 are used to connect to a power-conducting device, facilitating the removal of the battery 1. The electrolytic adhesive 3 has an extension portion 31, which is bonded between the side of the battery 1 and the second external portion 41, and separates the side of the battery 1 from the second external portion 41. This arrangement, by placing the extension portion 31 between the battery 1 and the second external portion 41, allows the extension portion 31 to cover all outer edges of the first connecting piece 2. Utilizing the insulating properties of the electrolytic adhesive 3, an insulating barrier structure is formed, achieving physical isolation between the first connecting piece 2 and the second connecting piece 4, effectively solving the risk of short circuits. Simultaneously, the second external portion 41 is also bonded to the side of the battery 1 via the extension portion 31, thus effectively fixing the second external portion 41.

[0028] In one embodiment, reference is made to Figures 1-3 The second connecting piece 4 also has a second main body 42, which is located at the bottom of the first connecting piece 2, and a second external part 41 that wraps around the side of the battery 1 and extends to the top of the battery 1.

[0029] As an example, the second connecting piece 4 also has a second main body 42. During installation, the second main body 42 is placed at the bottom of the area of ​​the first connecting piece 2 located at the bottom of the battery 1. The second external part 41 bypasses the side of the battery 1 and extends to the top of the battery 1. That is, the second main body 42 is bonded to the bottom of the first connecting piece 2 with electrolytic adhesive 3. The second external part 41 bypasses the top of the battery 1, which can effectively fix the second external part 41 and further prevent the second external part 41 from contacting the first connecting piece 2 and short-circuiting.

[0030] In one embodiment, reference is made to Figures 1-4 The second external part 41 includes a side connecting section 411 and a top connecting section 412; the side connecting section 411 is connected between the second main body part 42 and the top connecting section 412 and is bonded to the side of the battery 1; the top connecting section 412 is bonded to the top of the battery 1.

[0031] As an example, the second external part 41 includes a side connecting section 411 and a top connecting section 412. The side connecting section 411 is connected between the second main body part 42 and the top connecting section 412. During installation, the side connecting section 411 is bonded to the side of the battery 1, and the top connecting section 412 is bonded to the top of the battery 1. This fixes the second external part 41 to the side and top of the battery 1, ensuring that the second external part 41 is more securely fixed and preventing the second external part 41 from shifting and short-circuiting due to contact with the first connecting piece 2.

[0032] In one embodiment, reference is made to Figure 3 and Figure 4 The extension 31 is bonded between at least one end of the side connecting section 411 and the side of the battery 1; or, the extension 31 is bonded between the side connecting section 411 and the side of the battery 1, and between the top connecting section 412 and the top of the battery 1.

[0033] As an example, two arrangements of the extension portion 31 are introduced. In the first arrangement, the extension portion 31 is bonded between at least one end of the side connecting section 411 and the side of the battery 1, thereby fixing the second external part 41 to the side of the battery 1. In the second arrangement, the extension portion 31 is further lengthened, with one end bonded between the side connecting section 411 and the side of the battery 1, and the other end bonded between the top connecting section 412 and the top of the battery 1, thereby fixing the second external part 41 to both the side and top of the battery 1, ensuring a more stable fixation of the second external part 41 and preventing it from moving around and short-circuiting due to contact with the first connecting piece 2.

[0034] In one embodiment, reference is made to Figure 3The battery structure also includes an adhesive component 6; an extension 31, bonded between at least one end of the side connecting section 411 and the side of the battery 1; and the adhesive component 6 bonded between the top connecting section 412 and the top of the battery 1. The adhesive component 6 may be double-sided adhesive.

[0035] As an example, the battery structure also includes an adhesive component 6. During installation, the extension portion 31 is bonded between at least one end of the side connecting section 411 and the side of the battery 1, thereby fixing the side connecting section 411 to the side of the battery 1 via the extension portion 31. The adhesive component 6 is bonded between the top connecting section 412 and the top of the battery 1, thereby fixing the top connecting section 412 to the top of the battery 1 via the adhesive component 6. In this example, the second external connection portion 41 is fixed at both the side and top of the battery 1 via the extension portion 31 and the adhesive component 6, ensuring a more stable fixation of the second external connection portion 41 and preventing it from moving around and short-circuiting due to contact with the first connecting piece 2.

[0036] In one embodiment, reference is made to Figure 3 The extension 31 is bonded to one end of the side connecting section 411 near the second main body 42; the adhesive 6 is bonded between the top connecting section 412 and the top of the battery 1; or, one end of the adhesive 6 is bonded between the top connecting section 412 and the top of the battery 1, and the other end is bonded between the end of the side connecting section 411 away from the second main body 42 and the side of the battery 1.

[0037] As an example, when the extension 31 is bonded to the end of the side connecting section 411 near the second main body 42, the adhesive 6 can be bonded between the top connecting section 412 and the top of the battery 1; alternatively, one end of the adhesive 6 can be bonded between the top connecting section 412 and the top of the battery 1, and the other end can be bonded between the end of the side connecting section 411 away from the second main body 42 and the side of the battery 1. This achieves the goal of fixing the side connecting section 411 to the side of the battery 1 using the extension 31 and the adhesive 6, and fixing the top connecting section 412 to the top of the battery 1 using the adhesive 6. In this example, the second external part 41 is fixed to both the side and top of the battery 1 using the extension 31 and the adhesive 6, ensuring a more secure fixation of the second external part 41 and preventing it from moving around and short-circuiting due to contact with the first connecting piece 2.

[0038] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 3 The shape of the second main body 42 is the same as or different from the shape of the bottom of the battery 1; the second external part 41 is a strip-shaped external part.

[0039] As an example, the shape of the second main body 42 is designed according to actual needs. The shape of the second main body 42 can be the same as or different from the shape of the bottom of the battery 1, as long as the first connecting piece 2 and the second connecting piece 4 can be connected. The second external part 41 is a strip-shaped external part, which reduces the finished area of ​​the second connecting piece 4 while ensuring the connection strength. This can significantly reduce the amount of waste generated in the die-cutting process, thereby reducing production costs.

[0040] In one embodiment, reference is made to Figure 1 and Figure 2 The first connecting piece 2 also has a first main body 22, which is adhered to the bottom of the battery 1, and a first external part 21 that wraps around the side of the battery 1 and extends to the top of the battery 1.

[0041] As an example, the first connecting piece 2 also has a first main body 22. During installation, the first main body 22 is bonded to the bottom of the battery 1, and the first external part 21 bypasses the side of the battery 1 and extends to the top of the battery 1. This makes it easy to connect the first external part 21 to an external circuit to form a conductive circuit when the battery 1 needs to be removed, so as to de-adhere the electrolytic adhesive 3 and facilitate the installation and removal of the battery 1.

[0042] In one embodiment, reference is made to Figure 1 and Figure 2 One end of the first external part 21 is attached to the side of the battery 1, and the other end is attached to the top of the battery 1.

[0043] As an example, during installation, one end of the first external part 21 is glued to the side of the battery 1 and the other end is glued to the top of the battery 1, so that the first external part 21 is installed on the side and top of the battery 1. When it is necessary to remove the battery 1, it is convenient to connect the first external part 21 to the external circuit to form a conductive circuit, so that the electrolytic adhesive 3 can be unattached, thus facilitating the installation and removal of the battery 1.

[0044] In one embodiment, reference is made to Figure 1 and Figure 2 The shape of the first main body 22 is the same as or different from the shape of the bottom of the battery 1; the first external part 21 is a strip-shaped external part.

[0045] As an example, the shape of the first main body 22 is designed according to actual needs. The shape of the first main body 22 can be the same as or different from the shape of the bottom of the battery 1, as long as the first connecting piece 2 and the second connecting piece 4 can be connected. The first external part 21 is a strip-shaped external part, which reduces the finished area of ​​the first connecting piece 2 while ensuring the connection strength. This can significantly reduce the amount of waste generated in the die-cutting process, thereby reducing production costs.

[0046] In one embodiment, reference is made to Figure 2 , Figure 3 and Figure 4 The first connecting piece 2 includes a first adhesive layer 23 and a first conductive layer 24. The first adhesive layer 23 is bonded between the battery 1 and the first conductive layer 24. The second connecting piece 4 includes a second adhesive layer 43 and a second conductive layer 44. The second adhesive layer 43 is used to bond between the battery compartment 5 and the second conductive layer 44. Electrolytic adhesive 3 is disposed between the first conductive layer 24 and the second conductive layer 44.

[0047] As an example, the first connecting piece 2 includes a first adhesive layer 23 and a first conductive layer 24, and the second connecting piece 4 includes a second adhesive layer 43 and a second conductive layer 44. During installation, electrolytic adhesive 3 is placed between the first conductive layer 24 and the second conductive layer 44 to connect the first connecting piece 2 and the second connecting piece 4 together. The first adhesive layer 23 is bonded to the battery 1 to install the first connecting piece 2 on the battery 1. The second adhesive layer 43 is bonded between the battery compartment 5 and the second conductive layer 44 to install the second connecting piece 4 on the battery compartment 5, thereby enabling the battery 1 to be installed in the battery compartment 5 through the connecting structure. When it is necessary to remove battery 1, an electrical device is used to energize each second connecting piece 4 and the first connecting piece 2, so that each second connecting piece 4 and the first connecting piece 2 form a conductive circuit. At this time, the electrolytic adhesive 3 between each second connecting piece 4 and the first connecting piece 2 can be electrolyzed and de-adheded in the electric field environment, thereby making it easier to remove battery 1 from battery compartment 5. At the same time, the electrolytic adhesive 3 is melted and no adhesive residue remains in battery compartment 5. This can reduce the difficulty of installing and removing battery 1 and improve the efficiency of battery 1 installation and removal.

[0048] In one embodiment, the battery structure further includes a release film disposed on the side of the second adhesive layer 43 opposite to the second conductive layer 44.

[0049] As an example, the battery structure also includes a release film. When the battery structure is not in use, the release film is placed on the side of the second adhesive layer 43 facing away from the second conductive layer 44. As a temporary protective layer, the release film effectively blocks dust, moisture, oil, and other contaminants from contacting the second adhesive layer 43 and the second conductive layer 44, preventing a decrease in adhesiveness or degradation of conductivity, and preventing scratches or corrosion of the conductive layer from affecting signal transmission or current conduction. When the battery structure is in use, the release film is removed, and the second adhesive layer 43 is then bonded to the battery compartment. This utility model provides a terminal device, as shown in the following embodiment. Figures 2-4 The terminal device includes a battery compartment 5 and a battery structure. The battery structure is located inside the battery compartment 5, and the second connecting piece 4 is bonded to the battery compartment 5.

[0050] As an example, the terminal device includes a battery compartment 5 and a battery structure. The battery structure includes a battery 1, a first connecting piece 2, an electrolytic adhesive 3, and a second connecting piece 4. When the battery 1 needs to be installed, the electrolytic adhesive 3 is bonded between the first connecting piece 2 and the second connecting piece 4, connecting the first connecting piece 2 and the second connecting piece 4 together. The first connecting piece 2 is bonded to the bottom of the battery 1, and the second connecting piece 4 is bonded to the battery compartment 5, thus installing the battery 1 inside the battery compartment 5. When the battery 1 needs to be removed, the electrolytic adhesive 3 unbonds when the second connecting piece 4 and the first connecting piece 2 are connected in a conductive circuit. Specifically, an electrical device is used to energize the second connecting piece 4 and the first connecting piece 2, forming a conductive circuit. At this time, the electrolytic adhesive 3 between the second connecting piece 4 and the first connecting piece 2 can be electrolyzed in the electric field environment, causing it to unbond. This facilitates the removal of the battery 1 from the battery compartment 5, and the electrolytic adhesive 3 is melted without leaving any residue inside the battery compartment 5. This reduces the difficulty of installing and removing the battery 1 and improves the efficiency of battery installation and removal. The first connecting piece 2 and the second connecting piece 4 are both metal films, such as aluminum films.

[0051] The first connecting piece 2 has a first external portion 21, and the second connecting piece 4 has a second external portion 41 protruding from the first connecting piece 2. The second external portion 41 is at least partially located on the side of the battery 1. The first external portion 21 and the second external portion 41 are used to connect to a power-conducting device, facilitating the removal of the battery 1. The electrolytic adhesive 3 has an extension portion 31, which is bonded between the side of the battery 1 and the second external portion 41, and separates the side of the battery 1 from the second external portion 41. This arrangement, by placing the extension portion 31 between the battery 1 and the second external portion 41, allows the extension portion 31 to cover all outer edges of the first connecting piece 2. Utilizing the insulating properties of the electrolytic adhesive 3, an insulating barrier structure is formed, achieving physical isolation between the first connecting piece 2 and the second connecting piece 4, effectively solving the risk of short circuits. Simultaneously, the second external portion 41 is also bonded to the side of the battery 1 via the extension portion 31, thus effectively fixing the second external portion 41.

[0052] In one embodiment, the battery compartment 5 is an insulated battery compartment.

[0053] As an example, battery compartment 5 is an insulated battery compartment, which can reduce the weight and cost of the terminal device, and effectively isolate battery 1 from external metal parts or conductive environments, avoiding short circuit faults caused by damage to battery compartment 5, improper installation, or intrusion of external conductive substances. The arc resistance of the insulated battery compartment can prevent the spread of arcs and prevent fire or explosion accidents. The insulated battery compartment can reduce the parasitic capacitance and inductance between battery 1 and the external environment, reducing signal interference and energy loss. The insulating material usually has low thermal conductivity, which can reduce heat exchange between battery 1 and the external environment and prevent local overheating or overcooling. The insulating material (such as polycarbonate, polyamide) has excellent chemical corrosion resistance, which can resist the corrosion of leaked electrolyte from battery 1, salt spray or moisture in the environment, and extend the service life of the battery compartment.

[0054] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A battery structure, characterized in that, Includes a battery, a first connecting piece, electrolytic adhesive, and a second connecting piece; The first connecting piece is adhered to the bottom of the battery, and the first connecting piece has a first external portion; The second connecting piece is used to bond the battery compartment. The second connecting piece has a second external portion protruding from the first connecting piece. The second external portion is at least partially located on the side of the battery. The first external portion and the second external portion are used to connect external circuitry. The electrolytic adhesive is bonded between the first connecting piece and the second connecting piece, and the electrolytic adhesive is used to unbond the second connecting piece and the first connecting piece when they are connected into a conductive circuit. The electrolytic adhesive has an extension portion that is bonded between the side portion of the battery and the second external portion, and separates the side portion of the battery from the second external portion.

2. The battery structure according to claim 1, characterized in that, The second connecting piece also has a second main body portion located at the bottom of the first connecting piece, and a second external portion that wraps around the side of the battery and extends to the top of the battery.

3. The battery structure according to claim 2, characterized in that, The second external portion includes a side connecting section and a top connecting section; the side connecting section is connected between the second main body and the top connecting section and is bonded to the side of the battery; the top connecting section is bonded to the top of the battery.

4. The battery structure according to claim 3, characterized in that, The extension is bonded between at least one end of the side connecting section and the side of the battery; or, the extension is bonded between the side connecting section and the side of the battery, and between the top connecting section and the top of the battery.

5. The battery structure according to claim 4, characterized in that, The battery structure further includes an adhesive component; the extension is bonded between at least one end of the side connecting section and the side of the battery; the adhesive component is bonded between the top connecting section and the top of the battery.

6. The battery structure according to claim 5, characterized in that, The extension is bonded to one end of the side connecting section near the second main body; The adhesive component is bonded between the top connecting section and the top of the battery; or, One end of the adhesive is bonded between the top connecting section and the top of the battery, and the other end is bonded between the end of the side connecting section away from the second main body and the side of the battery.

7. The battery structure according to claim 2, characterized in that, The shape of the second main body is the same as or different from the shape of the bottom of the battery; the second external part is a strip-shaped external part.

8. The battery structure according to any one of claims 1-7, characterized in that, The first connecting piece also has a first main body portion, which is adhered to the bottom of the battery, and a first external portion that wraps around the side of the battery and extends to the top of the battery.

9. The battery structure according to claim 8, characterized in that, One end of the first external part is attached to the side of the battery, and the other end is attached to the top of the battery.

10. The battery structure according to claim 8, characterized in that, The shape of the first main body is the same as or different from the shape of the bottom of the battery; the first external part is a strip-shaped external part.

11. The battery structure according to claim 1, characterized in that, The first connecting piece includes a first adhesive layer and a first conductive layer, wherein the first adhesive layer is bonded between the battery and the first conductive layer; The second connecting piece includes a second adhesive layer and a second conductive layer, wherein the second adhesive layer is used to bond the battery compartment and the second conductive layer; The electrolytic adhesive is disposed between the first conductive layer and the second conductive layer.

12. The battery structure according to claim 11, characterized in that, The battery structure also includes a release film, which is disposed on the side of the second adhesive layer opposite to the second conductive layer.

13. A terminal device, characterized in that, The terminal device includes a battery compartment and a battery structure as described in any one of claims 1-11, wherein the battery structure is disposed within the battery compartment, and the second connecting piece is adhered to the battery compartment.

14. A terminal device according to claim 13, characterized in that, The battery compartment is an insulated battery compartment.

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