Button cell and electronic device

Abstract

The application discloses a button cell and electronic equipment, and relates to the technical field of button cells. The button cell comprises a cell body, a first pole connecting piece, a second pole connecting piece and a protection plate. The first pole connecting piece is fixed to a pole column of the cell body and is electrically connected with the pole column of the cell body. The second pole connecting piece is fixed to a cover plate of the cell body and is electrically connected with the cover plate of the cell body. The protection plate is fixed to the first pole connecting piece and the second pole connecting piece. A first pole leading-out area of the protection plate is electrically connected with the first pole connecting piece, and a second pole leading-out area of the protection plate is electrically connected with the second pole connecting piece. The button cell is provided with the electric connection structure of the protection plate and the second pole connecting piece, so that the button cell and a terminal device can be quickly disassembled and assembled, the problem of complicated replacement caused by the traditional welding mode is avoided, and the button cell has the advantages of convenient replacement, improved use convenience and reduced maintenance cost.

Description

Technical Field

[0001] This invention belongs to the field of button cell technology, and particularly relates to a button cell battery and an electronic device. Background Technology

[0002] Due to their small size, button batteries are widely used as power sources or backup power sources in various micro-electronic products such as computer motherboards, electronic watches, electronic dictionaries, electronic scales, remote controls, electric toys, pacemakers, electronic hearing aids, counters, and cameras.

[0003] Traditional button cell battery designs have significant drawbacks. Their terminals and cover plates typically use directly soldered wires to connect to the end product, making battery replacement extremely cumbersome. In practice, when a battery is depleted and needs replacement, technicians must first remove the soldered wires from the old battery and then resolder the new battery to the end product using the same wires. This requires specialized tools and skills and is prone to poor contact or solder joint detachment due to repeated soldering.

[0004] Furthermore, this non-removable connection method increases maintenance costs and reduces the ease of use of electronic products, especially for medical devices or precision instruments that require frequent battery replacements; this design flaw is even more pronounced in these cases. Current technology lacks a button cell battery structure solution that can ensure both stable electrical connection and convenient installation and removal. Therefore, existing technologies urgently need improvement to address these issues. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a button battery and an electronic device, addressing the issue that the electrical connection between existing button batteries and terminal products is not detachable.

[0006] To address the aforementioned problems, one embodiment of the present invention provides a button cell battery, comprising a battery body, a first electrode connector, a second electrode connector, and a protection plate. The first electrode connector is fixed to and electrically connected to the terminal post of the battery body. The second electrode connector is fixed to and electrically connected to the cover plate of the battery body. The protection plate is fixed to the first electrode connector and the second electrode connector, and the first electrode outlet area of ​​the protection plate is electrically connected to the first electrode connector, and the second electrode outlet area of ​​the protection plate is electrically connected to the second electrode connector.

[0007] As a further improvement to the above technical solution:

[0008] Optionally, the button cell further includes an insulating layer, which is laid on the cover plate of the battery body. The insulating layer has a first through hole and a second through hole. The first through hole is used for the terminal post of the battery body to be electrically connected to the first electrode connector, and the second through hole is used for the cover plate of the battery body to be electrically connected to the second electrode connector.

[0009] Optionally, the first electrode connector includes a first electrode base plate, two first electrode support plates, and two first electrode top plates. The first electrode base plate is fixed to the electrode post of the battery body. The two first electrode support plates are respectively fixed to opposite sides of the first electrode base plate. The two first electrode top plates are fixed to the two first electrode support plates one-to-one, and the first electrode top plates extend in a direction away from the other first electrode top plate. The first electrode support plates create a height difference between the first electrode top plates and the first electrode base plate, and the first electrode top plates are insulated from the cover plate of the battery body.

[0010] Optionally, the first pole top plate is parallel to the first pole bottom plate, and the first pole support plate is perpendicular to the first pole top plate or the first pole bottom plate.

[0011] Optionally, the second electrode connector includes a second electrode base plate, a second electrode support plate, and a second electrode top plate. The second electrode base plate is fixed to the cover plate of the battery body, the second electrode support plate is fixed to one side of the second electrode base plate, and the second electrode top plate is fixed to the second electrode support plate. The second electrode support plate creates a height difference between the second electrode top plate and the second electrode base plate, and the second electrode top plate is insulated from the terminal post of the battery body.

[0012] Optionally, the second pole top plate is parallel to the second pole bottom plate, and the second pole support plate is perpendicular to the second pole top plate or the second pole bottom plate.

[0013] Optionally, the button cell battery further includes an insulating gasket located between the upper surface of the cover plate of the battery body and the lower surface of the protective plate.

[0014] Optionally, the upper surface of the cover plate of the battery body, the lower surface of the protective plate, and the insulating gasket form an insulating cavity. The first electrode connector and the second electrode connector are both located in the insulating cavity. The protective plate has an injection hole for the injection head of the injection equipment to pass through and inject adhesive into the insulating cavity.

[0015] Optionally, the button cell battery further includes insulating tape, which covers the outer wall of the battery body and the protective plate, as well as the bottom of the battery body.

[0016] On the other hand, embodiments of the present invention provide an electronic device, the electronic device including a power-consuming device and a button battery as described above, the battery compartment of the power-consuming device having a first pole elastic contact and a second pole elastic contact, the button battery being installed in the battery compartment of the power-consuming device, and the first pole elastic contact being electrically connected to the first pole outlet area of ​​the protection plate, and the second pole elastic contact being electrically connected to the second pole outlet area of ​​the protection plate.

[0017] The button cell battery and electronic device provided in this invention have at least the following advantages compared with the prior art: by setting an electrical connection structure between the protection plate and the first electrode connector and the second electrode connector, the battery and the terminal device can be quickly disassembled and assembled, avoiding the cumbersome replacement problem caused by traditional welding methods, and has the advantages of easy replacement, improved ease of use and reduced maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a button cell provided in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a button cell provided in one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the battery body of a button cell provided in one embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the insulating layer of a button cell provided in one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the positive electrode connector of a button cell provided in one embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the negative electrode connector of a button cell provided in one embodiment of the present invention.

[0025] The reference numerals in the accompanying drawings are explained as follows:

[0026] 100-Button cell battery, 110-Battery body, 111-Terminal post, 112-Cover plate, 120-Positive electrode connector, 121-Positive electrode base plate, 122-Positive electrode support plate, 123-Positive electrode top plate, 130-Negative electrode connector, 131-Negative electrode base plate, 132-Negative electrode support plate, 133-Negative electrode top plate, 140-Protection plate, 141-Positive electrode outlet area, 142-Negative electrode outlet area, 143-Insulation through hole, 150-Insulating layer, 151-First through hole, 152-Second through hole, 160-Insulating washer, 170-Insulating tape. Detailed Implementation

[0027] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0028] In the description of this invention, 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, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] In existing technologies, button cells are widely used in microelectronic devices due to their small size. However, the traditional structure uses wire welding to connect the terminals and the cover plate, which requires removing the old wires and re-welding the new battery when replacing the battery. This process is cumbersome and carries the risk of damaging the circuit board. For example, in the maintenance of pacemakers, frequent welding may affect the device's sealing and increase maintenance time and costs.

[0031] To address these issues, researchers discovered that the irreversible connection caused by wire welding is the core factor leading to replacement difficulties. By analyzing the contact structure of the battery compartment in electronic devices, they realized the need to establish a detachable, standardized electrical connection interface. Based on this, they proposed installing an independent connector outside the battery body 110, which allows for stable conductivity with the battery electrodes while forming a standardized contact area, thereby avoiding welding operations.

[0032] This embodiment uses the first electrode as the positive electrode and the second electrode as the negative electrode as an example.

[0033] Please see Figure 1 , Figure 2 as well as Figure 3 This application proposes a button cell battery 100 including a battery body 110, a positive electrode connector 120, a negative electrode connector 130, and a protection plate 140. The positive electrode connector 120 is fixed to the terminal post 111 of the battery body 110 and forms an electrical connection, the negative electrode connector 130 is fixed to the cover plate 112 of the battery body 110 and forms an electrical connection, and the protection plate 140 is fixed to both the positive and negative electrode connectors. Its positive electrode outlet area 141 is connected to the positive electrode connector 120, and its negative electrode outlet area 142 is connected to the negative electrode connector 130.

[0034] The battery body 110 refers to a cylindrical energy storage unit comprising a positive electrode post 111 and a negative electrode cover plate 112, which can be implemented using a lithium-ion or alkaline battery structure, serving as the core component for energy storage. The positive electrode connector 120 is a conductive component connected to the post 111, which can be formed by stamping nickel sheets and fixed by laser welding, used to establish a repeatable conductive path. The negative electrode connector 130 is a conductive component connected to the cover plate 112, which can be formed by bending copper-aluminum composite sheets and connected to the cover plate 112 by riveting, forming a stable current transmission interface. The protection plate 140 is an insulating substrate with positive and negative electrode contact areas, specifically made of FR4 material, with copper plating on the surface to form conductive areas, used to standardize the electrical contact interface between the battery and external devices.

[0035] Specifically, the positive electrode connector 120 is mechanically fixed to the terminal post 111, and the negative electrode connector 130 is physically connected to the cover plate 112. Both extend conductive paths to specific areas of the protection plate 140. The protection plate 140 acts as an intermediary carrier, with its positive electrode outlet area 141 connected to the positive electrode connector 120 via conductive adhesive or solder joints, and its negative electrode outlet area 142 connected to the negative electrode connector 130 in the same manner. When the battery is installed in the device, the elastic contacts of the device's battery compartment directly contact the positive and negative electrode outlet areas 142 of the protection plate 140, forming a complete current path. This structural design allows for battery replacement simply by removing the old battery and inserting the new one, without any soldering operations.

[0036] Compared to existing technologies, traditional solutions rely on wire welding to form permanent connections. This solution, however, combines detachable connectors with a standardized protection board 140 to create a reusable electrical contact interface with the flexible contacts of the battery compartment in the end product. Existing technologies require breaking the existing connection and rebuilding a new one each time a replacement is needed; this solution achieves plug-and-play, non-destructive replacement, significantly reducing operational complexity.

[0037] Through the above technical solution, this application achieves rapid and non-destructive replacement of the button cell battery 100, eliminating the impact of welding operations on the device circuitry. In medical device maintenance scenarios, medical personnel can directly replace the battery without the need for specialized welding tools, ensuring the integrity of the device's seal and reducing maintenance time by approximately 70%. For consumer electronics users, this design makes battery replacement as simple as replacing a regular dry cell battery.

[0038] Please see Figure 2 and Figure 4 This application further proposes that the button cell 100 includes an insulating layer 150, which is laid on the cover plate 112 of the battery body 110. The insulating layer 150 has a first through hole 151 and a second through hole 152. The first through hole 151 is used for the terminal post 111 of the battery body 110 to be electrically connected to the positive terminal connector 120, and the second through hole 152 is used for the cover plate 112 of the battery body 110 to be electrically connected to the negative terminal connector 130.

[0039] The insulating layer 150 refers to a non-conductive material layer covering the surface of the cover plate 112 of the battery body 110. It can be made of polyimide film or epoxy resin sheet and is used to prevent direct contact between the positive electrode connector 120 and the cover plate 112. The first through hole 151 is a circular hole penetrating the insulating layer 150, which can be formed by stamping or laser cutting. It is used to expose the top of the terminal post 111 to enable welding and conduction of the positive electrode connector 120. The second through hole 152 is a rectangular hole spaced apart from the first through hole 151. It can be processed by molding and is used to expose the surface area of ​​the cover plate 112 to enable fixed conduction of the negative electrode connector 130.

[0040] Specifically, during the assembly of the battery body 110, the insulating layer 150 is pre-attached to the surface of the cover plate 112, with the first through hole 151 and the second through hole 152 corresponding to the positions of the terminals 111 and the conductive areas of the cover plate 112, respectively. When the positive electrode connector 120 is welded to the terminal 111, its bottom passes through the first through hole 151 and directly contacts the metal surface of the terminal 111, while the insulating layer 150 blocks the potential short circuit path between the positive electrode connector 120 and the cover plate 112. The negative electrode connector 130 is welded to the cover plate 112 through the second through hole 152. At this time, the insulating layer 150 only retains the contact area between the negative electrode connector 130 and the cover plate 112, while the rest remains in an insulating and isolated state.

[0041] Compared with existing technologies, the negative electrode cover 112 of a traditional button cell 100 is insulated from the positive electrode post 111, and no insulating layer 150 is provided. When the positive electrode connector 120 is in direct contact with the cover 112, there is a risk of short circuit. This solution covers the surface of the cover 112 with an insulating layer 150 and opens through holes only in necessary locations, ensuring reliable conduction between the positive and negative electrode connectors.

[0042] Through the above technical solution, this application achieves physical isolation between the positive electrode connector 120 and the battery body 110, avoiding short circuit problems caused by contact between the positive electrode connector 120 and the negatively charged cover plate 112, while retaining the through-hole structure to ensure electrical connection function. This design simplifies the battery assembly process, enabling the connector to be quickly positioned and installed without the need for additional insulation treatment steps.

[0043] Please see Figure 2 as well as Figure 5 This application further proposes that the positive electrode connector 120 of the button cell 100 includes a positive electrode base plate 121, two positive electrode support plates 122 and two positive electrode top plates 123. The positive electrode base plate 121 is fixed to the terminal post 111 of the battery body 110. The two positive electrode support plates 122 are respectively fixed to opposite sides of the positive electrode base plate 121. The two positive electrode top plates 123 are fixed to the two positive electrode support plates 122 one-to-one, and the positive electrode top plates 123 extend in a direction away from the other positive electrode top plate 123. The positive electrode support plates 122 create a height difference between the positive electrode top plates 123 and the positive electrode base plate 121, so that the protection plate 140 is insulated from the terminal post 111 of the battery body 110, and the positive electrode top plates 123 are insulated from the terminal post 111 of the battery body 110, which can avoid short circuit.

[0044] The positive electrode substrate 121 refers to a sheet-like metal structure that directly contacts the terminal post 111 of the battery body 110. It can be formed by stamping with a nickel alloy and its function is to conduct current from the terminal post 111 to the support sheet. The positive electrode support sheet 122 refers to a metal component that extends upwards perpendicular to the substrate. It can be formed into an L-shape by bending. Its function is to provide vertical support for the top sheet and form a current transmission path. The positive electrode top sheet 123 refers to a horizontally extending metal sheet located at the end of the support sheet. It can be fixed to the top of the support sheet by laser welding and its function is to form a detachable elastic contact with the positive electrode outlet area 141 of the protection plate 140.

[0045] Specifically, the positive electrode substrate 121 is fixed to the surface of the electrode post 111 by laser welding or conductive adhesive bonding. Two positive electrode support plates 122 are symmetrically distributed on both sides of the substrate and are integrally formed with it through a stamping process. The positive electrode top plate 123 extends outward to both sides in the form of a cantilever beam. When the protection plate 140 is installed, the top plate undergoes elastic deformation under pressure, thereby forming a stable contact with the positive electrode outlet area 141 of the protection plate 140. This structure, through its split design, allows the positive electrode connector 120 to have independent deformation capability, avoiding poor contact due to assembly errors.

[0046] Compared to existing technologies, traditional methods use a single wire to directly weld the terminal 111 to the protection plate 140, which requires damaging the welding point when replacing the battery. This solution, through the combined structure of the positive electrode base plate 121, support plate, and top plate, creates a reusable mechanical contact between the protection plate 140 and the terminal 111, allowing battery replacement without welding.

[0047] Through the above technical solution, this application achieves a modular design of the positive electrode connection structure, enabling the protection board 140 to be quickly disassembled and assembled without damaging the connectors. When replacing the battery, the old battery can be separated simply by removing the protection board 140 from the top contact area, and then the top of the new battery can be re-aligned and pressed with the protection board 140, significantly reducing the complexity of the operation.

[0048] Please refer to the following for details. Figure 5 This application further proposes that the positive electrode top plate 123 is parallel to the positive electrode bottom plate 121, and the positive electrode support plate 122 is perpendicular to the positive electrode top plate 123 or the positive electrode bottom plate 121.

[0049] The parallelism between the positive electrode top sheet 123 and the positive electrode bottom sheet 121 means that they maintain the same planar extension relationship. Specifically, this can be achieved by using a stamping process to process the top sheet and bottom sheet into flat thin sheets. This parallel structure can increase the contact area with the protection plate 140. The perpendicularity between the positive electrode support sheet 122 and the top sheet or bottom sheet means that the support sheet forms a right-angle bending structure. Specifically, this can be achieved by bending the support sheet to form a 90-degree angle with the top sheet or bottom sheet. This perpendicular structure can provide support rigidity for the top sheet.

[0050] Specifically, the positive electrode substrate 121 is fixed to the surface of the terminal post 111 of the battery body 110 by welding. Two positive electrode support plates 122 are bent upward from both sides of the substrate to form a vertical column structure. Two positive electrode top plates 123 extend horizontally outward from the top of the support plates to form a contact plane parallel to the substrate. For example, the vertical bending structure of the support plates and top plates can form a stable three-dimensional frame, making the top plates less prone to deformation when subjected to external pressure. At the same time, the parallel arrangement of the top plates and substrate can ensure that the positive electrode outlet area 141 of the protection plate 140 maintains surface contact with the top plates.

[0051] Compared with existing technologies, the positive electrode connector 120 of a traditional button cell 100 is mostly a single planar structure, which is prone to poor contact due to uneven force when installing the protection plate 140. By setting up a vertical support plate and a parallel top plate structure, the mechanical load applied by the protection plate 140 can be distributed, avoiding plastic deformation of the connector, and improving the stability of current conduction.

[0052] Through the above technical solution, this application achieves three-dimensional support for the positive electrode connector 120 within a limited space, solving the problem of increased contact resistance caused by the deformation of traditional planar connectors under pressure. For example, the vertical support piece can effectively resist the lateral extrusion force during the installation of the protection plate 140, while the parallel top piece ensures uniform force on the contact surface with the protection plate 140, thereby maintaining a stable electrical connection.

[0053] Please see Figure 2 as well as Figure 6 This application further proposes that the button cell 100 includes a negative electrode connector 130, which includes a negative electrode base plate 131, a negative electrode support plate 132, and a negative electrode top plate 133. The negative electrode base plate 131 is fixed to the cover plate 112 of the battery body 110, the negative electrode support plate 132 is fixed to one side of the negative electrode base plate 131, and the negative electrode top plate 133 is fixed to the negative electrode support plate 132. The negative electrode support plate 132 creates a height difference between the negative electrode top plate 133 and the negative electrode base plate 131, which insulates the protection plate 140 from the cover plate 112 of the battery body 110 and the negative electrode top plate 133 from the terminal post 111 of the battery body 110, thereby avoiding short circuits.

[0054] The negative electrode base plate 131 is a conductive component that directly contacts the cover plate 112 of the battery body 110. It can be fixed by welding or conductive adhesive bonding and is used to conduct negative electrode current from the cover plate 112. The negative electrode support plate 132 is a vertical transition structure connecting the negative electrode base plate 131 and the negative electrode top plate 133. It can be formed by bending a metal sheet and is used to provide mechanical support and maintain the installation height of the negative electrode top plate 133. The negative electrode top plate 133 is a conductive component connected to the negative electrode discharge area 142 of the protection plate 140. It can be a stamped metal sheet and is used to conduct current to the protection plate 140.

[0055] Specifically, the negative electrode substrate 131 is fixed to the surface of the battery cover plate 112 by welding or conductive adhesive, forming a stable electrical connection. The negative electrode support plate 132 extends vertically from one side of the negative electrode substrate 131 and is formed into a support structure of a certain height through a bending process. The negative electrode top plate 133 is fixed to the top of the support plate and is electrically connected to the negative electrode outlet area 142 of the protection plate 140 by welding or elastic contact. This layered structure allows the negative electrode connector 130 to form a stable current path within a limited space, while providing a reliable mounting base for the protection plate 140.

[0056] Compared to existing technologies, which involve directly soldering wires to the surface of the cover plate 112, requiring the solder joints to be damaged when replacing the battery, this solution uses a separate negative electrode connector 130 to create a detachable modular structure between the protection board 140 and the battery body 110. When replacing the battery, it is only necessary to release the protection board 140 from the connector without damaging the original solder joints.

[0057] Through the above technical solution, this application achieves detachable battery negative terminal connection, avoiding repeated damage to the welding points of the terminal product during battery replacement and significantly reducing operational complexity. Simultaneously, the layered support structure enhances the stability of the connector under vibration, preventing poor contact caused by mechanical stress.

[0058] Please see Figure 1 as well as Figure 6 This application further proposes a button cell 100, including a battery body 110, a positive electrode connector 120, a negative electrode connector 130, and a protection plate 140. The negative electrode connector 130 includes a negative electrode bottom plate 131, a negative electrode support plate 132, and a negative electrode top plate 133. The negative electrode top plate 133 is parallel to the negative electrode bottom plate 131, and the negative electrode support plate 132 is perpendicular to the negative electrode top plate 133 or the negative electrode bottom plate 131.

[0059] The negative electrode top plate 133 refers to the metal conductive plate disposed on top of the support plate, which can be made by stamping nickel alloy. Its planar extension direction is parallel to the negative electrode bottom plate 131, forming a stable conductive contact surface. The negative electrode bottom plate 131 refers to the metal substrate fixed to the surface of the battery cover plate 112, which can be made by laser welding copper, serving as the basic carrier for negative electrode current conduction. The negative electrode support plate 132 refers to the vertical transition structure connecting the bottom plate and the top plate, which can be made by bending a steel strip, forming a dual function of mechanical support and current conduction through the vertical angle.

[0060] Specifically, the negative electrode substrate 131 is welded to the surface of the battery cover 112. A support plate extends vertically upward from the edge of the substrate to form a three-dimensional support structure, and a top plate extends horizontally parallel to the substrate at the top of the support plate. During assembly, the top plate makes planar contact with the negative electrode outlet area 142 of the protection plate 140. The vertically positioned support plate can withstand external pressure and maintain the stability of the top plate position. The parallel arrangement of the top plate and the substrate forms a symmetrical structure, ensuring that the current conduction path has consistent direction and avoiding poor contact due to angular deviation.

[0061] Compared to existing technologies, the negative electrode connector 130 of traditional button cell batteries 100 often adopts a single-layer sheet structure or a non-vertical support design, which is prone to deformation and contact failure under external pressure. This solution uses a combination of vertical support sheets and parallel top sheets to form a three-dimensional support system, enhancing mechanical strength while maintaining conductivity stability. In existing technologies, tilted or bent support structures cause current paths to become circuitous, while the vertical support sheets in this solution minimize the electron conduction path.

[0062] Through the above technical solution, this application achieves structural stability of the negative electrode connector 130 under external impact, ensuring that the protection plate 140 and the negative electrode outlet area 142 always maintain effective contact. The vertical support structure avoids the displacement risk caused by vibration of traditional planar connectors, and the parallel top plate design maximizes the contact area, effectively reducing contact resistance. This structure allows for reliable connection through simple plug-and-play operations when replacing the battery, without the need for welding or removing fixing components.

[0063] Please see Figure 2 This application further proposes that the button cell 100 includes an insulating gasket 160, which is located between the upper surface of the cover plate 112 of the battery body 110 and the lower surface of the protection plate 140. The upper surface of the cover plate 112 of the battery body 110, the lower surface of the protection plate 140, and the insulating gasket 160 form an insulating cavity, and the positive electrode connector 120 and the negative electrode connector 130 are both located in the insulating cavity.

[0064] Among them, the insulating gasket 160 refers to the ring structure used to isolate the electrical contact between the battery body 110 and the protection plate 140. Specifically, it can be made of polyimide film or rubber material, and its thickness can be from 0.1 mm to 0.5 mm. It avoids short circuit between the positive electrode connector 120 or the negative electrode connector 130 and the cover plate 112 through physical isolation.

[0065] The insulating cavity refers to the enclosed space formed by the cover plate 112, the protective plate 140, and the insulating gasket 160. Specifically, it can be achieved by filling the insulating material, such as epoxy resin or silicone, through an injection process to completely wrap the positive electrode connector 120 and the negative electrode connector 130, thereby eliminating the interference of the external environment on the electrode connection.

[0066] Specifically, the insulating washer 160 is pressed between the cover plate 112 and the protective plate 140. Insulating adhesive is injected into the insulating cavity through the injection hole 143, so that the positive electrode connector 120 and the negative electrode connector 130 are wrapped and fixed by the insulating adhesive. Since the positive electrode connector 120 and the negative electrode connector 130 are confined within the insulating cavity, the electrical clearance between them and the cover plate 112 is maintained, avoiding the risk of electrode contact short circuit due to vibration or external force. In addition, the curing process of the insulating adhesive can be adjusted to achieve uniform filling, ensuring that there are no air bubbles remaining inside the insulating cavity.

[0067] Compared to existing technologies, traditional button cell batteries lack an insulating cavity structure, leaving the positive and negative electrode connectors directly exposed to the external environment. This makes them susceptible to short circuits due to foreign object intrusion or mechanical impact. In contrast, this solution, through an insulating cavity and encapsulation process, not only achieves physical fixation of the electrode connections but also forms a double protective barrier through the insulating adhesive, significantly improving the battery's safety and reliability under complex operating conditions.

[0068] Through the above technical solution, this application solves the short-circuit risk problem caused by exposed electrode connectors in traditional button cell batteries 100, while simplifying the battery assembly process. The insulating cavity structure allows the electrode connectors to form an integrated package after glue injection, eliminating the need for additional welding or insulation wrapping operations, reducing production complexity, and ensuring stable electrical performance of the battery during repeated replacements or use.

[0069] Please see Figure 1 This application further proposes that the protection plate 140 has an injection hole 143, which is used for the injection head of the injection equipment to pass through and inject adhesive into the insulation cavity.

[0070] The injection hole 143 refers to a through-hole structure set on the protective plate 140. It can be made by laser cutting or stamping. Its hole diameter can be adapted to the insertion requirements of different types of injection heads, and is used to establish a communication channel between the external injection equipment and the insulating cavity. The insulating cavity is a closed space surrounded by the upper surface of the cover plate 112, the lower surface of the protective plate 140, and the insulating gasket 160. Liquid insulating material can be injected through the injection hole 143 to wrap and fix the positive electrode connector 120 and the negative electrode connector 130, thereby eliminating the risk of internal short circuit.

[0071] Specifically, after the positive electrode connector 120 and the negative electrode connector 130 are assembled, the dispensing head of the dispensing device can pass through the dispensing through-hole 143 of the protective plate 140 and directly approach the insulating cavity. When the liquid insulating adhesive is injected into the insulating cavity through the dispensing head, the adhesive spreads evenly along the inner wall of the cavity, covering the exposed conductive parts of the positive electrode connector 120 and the negative electrode connector 130. After injection, the adhesive solidifies to form an insulating protective layer, effectively isolating the conductive components from the external environment. For example, the dispensing through-hole 143 can be set to be circular or elliptical, with a diameter of 1.5-3.0 mm, which ensures smooth insertion of the dispensing head and avoids adhesive backflow.

[0072] Compared with existing technologies, the insulation treatment of traditional button cell batteries 100 usually involves pre-placed insulating sheets or manual application of adhesive, which suffers from uneven coverage and low operational efficiency. This solution, however, achieves precise adhesive injection through the injection hole 143. The adhesive flows in a controlled manner within the sealed cavity, preventing adhesive overflow and contamination of the battery surface while ensuring complete coverage of conductive components, significantly improving insulation reliability.

[0073] Through the above technical solution, this application solves the short circuit risk caused by incomplete insulation treatment in traditional button cell batteries 100, while simplifying the production process. The glue injection through-hole 143 enables standardized operation of the insulating glue injection process, and the glue filling amount can be precisely controlled by the glue injection equipment, avoiding the problems of missed or excessive coating that are easy to occur when applying glue manually, thereby improving product yield and batch consistency.

[0074] Please see Figure 1 as well as Figure 2 This application further proposes that the button cell 100 also includes insulating tape 170, which covers the outer wall of the battery body 110 and the protection plate 140 and the bottom of the battery body 110.

[0075] The insulating tape 170 refers to a flexible thin-layer material with electrical insulation properties, specifically made of polyimide film or polyester film. It is fixed to the battery surface by hot pressing or adhesive to isolate conductive components from the external environment. Covering the outer walls of the battery body 110 and the protective plate 140, as well as the bottom of the battery body 110, means that the insulating tape 170 covers the side walls of the battery casing, the edge of the protective plate 140, and the bottom area of ​​the battery, forming a continuous and closed insulating layer 150 to prevent the exposed metal parts of the battery from contacting external conductive objects.

[0076] Specifically, the insulating tape 170 is cut to a size that matches the shape of the battery and covers the side walls of the battery body 110 and the protection plate 140 by wrapping it around the battery, extending to the bottom of the battery for complete coverage. During installation, the edges of the insulating tape 170 can be sealed using heat sealing or adhesive bonding processes, ensuring that the metal casing of the battery, the edges of the protection plate 140, and the bottom are all isolated by insulating material. This design prevents the outer surface of the battery from accidentally coming into contact with other metal components inside the electronic device during installation or removal, thereby avoiding the risk of short circuits.

[0077] In some specific embodiments, the thickness of the insulating tape 170 can be controlled within the range of 0.05 mm to 0.2 mm, ensuring insulation performance without significantly increasing the battery volume. The seams of the insulating tape 170 can be bonded using an overlapping method, for example, forming an overlap area of ​​5 mm to 10 mm at the bottom edge of the battery to enhance sealing.

[0078] Compared to existing technologies, traditional button cell batteries 100 rely solely on the insulating coating of the battery casing itself or local insulating pads, which are prone to insulation failure due to mechanical wear during long-term use. This solution, however, forms a physical isolation layer by covering it with insulating tape 170, which not only covers a larger area but also provides additional protection when the battery is subjected to external pressure or friction, while simplifying the assembly process of the insulation structure.

[0079] Through the above technical solution, this application effectively solves the problem of short circuits caused by contact between exposed metal parts of the battery and external conductors, reduces safety hazards caused by improper operation during battery replacement, and extends the insulation reliability of the battery in complex operating environments. The full-coverage design of the insulating tape 170 also avoids damage to the insulation layer 150 that may be caused by traditional wire welding, making battery replacement operation simpler and safer.

[0080] This application further proposes an electronic device, including an electrical device and a button cell battery 100. The battery compartment of the electrical device is provided with a positive resilient contact and a negative resilient contact. The button cell battery 100 is installed in the battery compartment of the electrical device, and the positive resilient contact is electrically connected to the outer surface of the positive electrode outlet area 141 of the protection plate 140, and the negative resilient contact is electrically connected to the outer surface of the negative electrode outlet area 142 of the protection plate 140.

[0081] Among them, the positive electrode elastic contact refers to a conductive component with elastic deformation capability, which can be implemented by spring sheet or conductive spring sheet, and is used to form a stable contact with the outer surface of the positive electrode outlet area 141 of the protection plate 140 when the button cell 100 is installed into the battery compartment.

[0082] Among them, the negative electrode elastic contact refers to the elastic conductive component corresponding to the positive electrode contact. Specifically, it can be implemented by a metal spring or a helical spring structure, and is used to maintain continuous conduction with the outer surface of the negative electrode output area 142 of the protection board 140 after the battery is installed.

[0083] Among them, the positive electrode outlet region 141 and the negative electrode outlet region 142 of the protection plate 140 refer to the metallized regions on the protection plate 140 that are respectively connected to the positive electrode connector 120 and the negative electrode connector 130. Specifically, they can be formed by gold plating, nickel plating or welding of conductive layers, and are used to transfer the internal electrical energy of the battery to the external contacts.

[0084] Specifically, the button cell 100 directly contacts the elastic contacts inside the battery compartment via the outer surface of the positive and negative electrode outlet areas of the protection plate 140, eliminating the need for wire soldering. When replacing the battery, simply remove the old battery from the battery compartment and insert the new battery in the same orientation. The elastic contacts automatically make contact with the outlet areas of the protection plate 140 of the new battery due to their own deformation recovery force. The battery compartment structure can be designed as a snap-on or sliding rail type to ensure that the contacts are aligned with the outlet areas after the battery is installed.

[0085] Compared to existing technologies, the current button cell battery 100 needs to be fixed to the end product by welding wires. When replacing it, the old battery needs to be desoldered and the new battery needs to be resoldered, which is complicated and carries the risk of damaging the solder joints. This solution achieves plug-and-play functionality by having the flexible contacts directly contact the output area of ​​the protection board 140, eliminating the need for welding.

[0086] Through the above technical solution, this application solves the problem of repeated soldering required when replacing button cell batteries 100, simplifies the battery disassembly and installation steps, and enables the battery replacement process to be completed without professional tools, thereby improving the maintenance efficiency of electronic devices and the user experience.

[0087] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A button cell battery, characterized in that, The device includes a battery body, a first electrode connector, a second electrode connector, and a protection plate. The protection plate includes an insulated first electrode outlet area and a second electrode outlet area. The first electrode connector is fixed to and electrically connected to the terminal post of the battery body. The second electrode connector is fixed to and electrically connected to the cover plate of the battery body. The protection plate is fixed to the first electrode connector and the second electrode connector. The first electrode outlet area is electrically connected to the first electrode connector, and the second electrode outlet area is electrically connected to the second electrode connector. The first electrode connector includes a first electrode base plate, two first electrode support plates, and two first electrode top plates. The first electrode base plate is fixed to the electrode post of the battery body. The two first electrode support plates are respectively fixed to opposite sides of the first electrode base plate. The two first electrode top plates are fixed to the two first electrode support plates one-to-one, and the first electrode top plates extend in a direction away from the other first electrode top plate. The first electrode support plates create a height difference between the first electrode top plates and the first electrode base plate, and the first electrode top plates are insulated from the cover plate of the battery body.

2. The button cell battery according to claim 1, characterized in that, The button cell also includes an insulating layer, which is laid on the cover plate of the battery body. The insulating layer has a first through hole and a second through hole. The first through hole is used for the terminal post of the battery body to be electrically connected to the first electrode connector, and the second through hole is used for the cover plate of the battery body to be electrically connected to the second electrode connector.

3. The button cell battery according to claim 1, characterized in that, The first pole top plate is parallel to the first pole bottom plate, and the first pole support plate is perpendicular to the first pole top plate or the first pole bottom plate.

4. The button cell battery according to claim 1, characterized in that, The second electrode connector includes a second electrode base plate, a second electrode support plate, and a second electrode top plate. The second electrode base plate is fixed to the cover plate of the battery body, the second electrode support plate is fixed to one side of the second electrode base plate, and the second electrode top plate is fixed to the second electrode support plate. The second electrode support plate creates a height difference between the second electrode top plate and the second electrode base plate, and the second electrode top plate is insulated from the terminal post of the battery body.

5. The button cell battery according to claim 4, characterized in that, The second pole top plate is parallel to the second pole bottom plate, and the second pole support plate is perpendicular to the second pole top plate or the second pole bottom plate.

6. The button cell battery according to claim 1, characterized in that, The button cell also includes an insulating gasket located between the upper surface of the cover plate of the battery body and the lower surface of the protective plate.

7. The button cell battery according to claim 6, characterized in that, The upper surface of the cover plate of the battery body, the lower surface of the protective plate, and the insulating gasket form an insulating cavity. The first electrode connector and the second electrode connector are both located in the insulating cavity. The protective plate has an injection hole for the injection head of the injection equipment to pass through and inject adhesive into the insulating cavity.

8. The button cell battery according to claim 1, characterized in that, The button cell also includes insulating tape, which covers the outer wall of the battery body and the protective plate, as well as the bottom of the battery body.

9. An electronic device, characterized in that, The electronic device includes an electrical device and a button cell battery as described in any one of claims 1 to 8. The battery compartment of the electrical device is provided with a first-pole elastic contact and a second-pole elastic contact. The button cell battery is installed in the battery compartment of the electrical device, and the first-pole elastic contact is electrically connected to the outer surface of the first-pole outlet area of ​​the protection plate, and the second-pole elastic contact is electrically connected to the outer surface of the second-pole outlet area of ​​the protection plate.

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