Button battery with insulating support

Abstract

The present invention discloses a button battery with an insulating support, comprising an upper cover, an insulating support, a winding body and a lower shell, wherein the upper cover and the lower shell are both made of conductive materials, the lower shell and the upper cover are respectively sealed and clamped with the outer periphery of the insulating support in a releasable manner, the axis of the insulating support is detachably plugged into the center of the winding body, the upper end face and the lower end face of the winding body are respectively provided with a first pole ear and a second pole ear, the free end of the first pole ear is fixed to the inner wall of the upper cover, and the free end of the second pole ear is fixed to the inner wall of the lower shell. The button battery with an insulating support of the present invention has a simple structure, high space utilization, improved battery capacity, flexible product design and prevents battery explosion.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, in particular to a button battery with an insulating support. Background Art

[0002] At present, button batteries are a kind of all-metal sealed batteries with the advantages of high specific energy, many cycles and long storage time. They are often used in portable electronic devices such as mobile phones, digital cameras, radios, laptops and various small electronic products.

[0003] In the prior art, button batteries usually only have a winding body arranged inside the metal shell. The winding body includes a positive electrode sheet, a negative electrode sheet, and a separator between the positive electrode sheet and the negative electrode sheet. Since the axis of the button battery is unsupported, the axis of the button battery is prone to bulging or inward depression when it is squeezed from the inside or outside during actual use. The bulging will cause the metal shell to become thinner or even break, and the connection between the upper cover and the lower shell will open. The inward depression will squeeze the winding body installed inside it, and even make the positive electrode sheet and the negative electrode sheet penetrate the separator between them and contact, causing a short circuit inside the battery. When a short circuit occurs inside the battery, the winding body will generate high heat, causing part of the electrolyte to vaporize. When the internal pressure is large enough, the metal shell of the button battery may be broken, and the battery temperature may even be raised to the point where the material burns and explodes. Summary of the invention

[0004] The present invention is completed to solve the deficiencies in the prior art. The purpose of the present invention is to provide a button battery with an insulating support which has a simple structure, high space utilization, increased battery capacity, flexible product design and prevents battery explosion.

[0005] A button battery with an insulating support member of the present invention comprises an upper cover, an insulating support member, a winding body and a lower shell, wherein the upper cover and the lower shell are both made of conductive materials, the lower shell is arranged to form a sealed cavity for accommodating the winding body, the insulating support member is clamped between the upper cover and the winding body, the top of the lower shell and the outer periphery of the upper cover are respectively releasably sealed and clamped with the outer side and the inner side of the outer periphery of the insulating support member, the axis of the insulating support member is detachably plugged into the center of the winding body, the winding body is soaked with electrolyte, a first pole ear is arranged on the upper end surface of the winding body, a second pole ear is arranged on the lower end surface of the winding body, the free end of the first pole ear is fixed to the inner wall of the upper cover, and the free end of the second pole ear is fixed to the inner wall of the lower shell.

[0006] A button cell with an insulating support of the present invention may also be:

[0007] The insulating support member comprises an insulating disk, the outer periphery of which is respectively sealably engaged with the outer periphery of the upper cover and the top of the lower shell in a releasable manner, and the axis of the insulating disk is detachably plugged into the center of the winding body.

[0008] A sealing ring covering the outer peripheral edge of the upper cover is integrally formed or fixed on the outer circumference of the insulating disk, and the outer side of the sealing ring is releasably sealed and clamped with the top of the lower shell.

[0009] An insulating column is integrally formed or fixed at the axial center of the insulating disk. The insulating column is detachably plugged into the center of the winding body, and the bottom of the insulating column is releasably abutted against the lower shell.

[0010] The lower shell is provided with an inwardly concave clamping groove at the clamping position with the insulating support member, and the insulating support member is releasably sealed and clamped with the lower shell at the top position of the clamping groove.

[0011] The wound body is cylindrical, and includes a positive electrode sheet, a negative electrode sheet and a separator. The positive electrode sheet and the negative electrode sheet are alternately stacked and wound to form a cylindrical shape. The separator is arranged between the positive electrode sheet and the negative electrode sheet. The first electrode ear and the positive electrode sheet are fixed to the upper end surface of the wound body, and the second electrode ear and the negative electrode sheet are fixed to the lower end surface of the wound body.

[0012] The upper cover is provided with a stamp for releasing pressure, and the stamp which is concave or convex is fixed to the upper cover in an integral manner.

[0013] The stamp is in a circular shape with the axis of the upper cover as the center.

[0014] The insulating support is provided with a first through hole at a position corresponding to the free end of the first pole lug, and the free end of the first pole lug passes through the first through hole and is fixed to the upper cover.

[0015] An insulating ring is detachably fixedly provided on the top of the lower shell.

[0016] A button battery with an insulating support member of the present invention comprises an upper cover, an insulating support member, a winding body and a lower shell, wherein the upper cover and the lower shell are both made of conductive materials, the lower shell is arranged to form a sealed cavity for accommodating the winding body, the insulating support member is clamped between the upper cover and the winding body, the top of the lower shell and the outer periphery of the upper cover are respectively releasably sealed and clamped with the outer side and the inner side of the outer periphery of the insulating support member, the axis of the insulating support member is detachably plugged into the center of the winding body, the winding body is soaked with electrolyte, a first pole ear is arranged on the upper end surface of the winding body, a second pole ear is arranged on the lower end surface of the winding body, the free end of the first pole ear is fixed to the inner wall of the upper cover, and the free end of the second pole ear is fixed to the inner wall of the lower shell. In this way, the first pole ear and the second pole ear are connected to the upper end surface and the lower end surface of the winding body respectively, the free end of the second pole ear is first fixed to the inner wall of the lower shell, and then the winding body is accommodated in the sealed cavity formed by the lower shell, the amount of the electrolyte required for infiltration is calculated according to the volume of the winding body, and the electrolyte is injected from the insertion position of the insulating support member so that the electrolyte fully infiltrates the entire winding body, the insulating support member is shallowly inserted into the winding body from the top of the winding body, and at the same time, the first pole ear is fixed to the inner wall of the upper cover through the insulating support member, which can be the first pole ear from the outer peripheral edge of the insulating support member through the insulating support member and the inner wall of the upper cover The first pole ear is fixed, that is, it is fixed at any position from the edge of the insulating support member around the inner wall of the upper cover. When the first pole ear is fixed to the inner wall of the upper cover, the outer periphery of the upper cover is connected to the insulating support member. The outer periphery of the support member is clamped so that the outer periphery of the insulating support member is covered by the outer periphery of the upper cover, and then the upper cover and the insulating support member are inserted into the wound body together, and the outer periphery of the insulating support member is releasably sealed and clamped with the inner wall of the lower shell to complete the assembly of the entire button battery, so that the wound body is directly loaded into the lower shell, so that the space of the sealed cavity can be utilized to the maximum extent, the capacity of the button battery can be greatly improved, the wound body is fully infiltrated with the electrolyte, and there is no excess electrolyte in the sealed cavity, so as not to cause any corrosion to the upper cover and the lower shell, and the entire metal shell including the upper cover and the lower shell are directly connected to the first pole ear and the second pole ear, so the upper cover and the lower shell are directly charged, and the customer can set the positive and negative poles of the power-taking structure of the device at any position in contact with the upper cover and the lower shell respectively, so the device can be designed to be more compact. The top of the lower shell and the outer periphery of the upper cover are respectively releasably sealed and clamped with the outer side and inner side of the outer periphery of the insulating support member, so as to insulate the upper cover and the lower shell and prevent the upper cover and the lower shell from direct contact and causing a short circuit, while also sealing and fixing the gap position between the upper cover and the lower shell.The button battery with an insulating support member of the present invention has the advantages of simple structure, high space utilization, improved battery capacity, flexible product design and prevention of battery explosion compared with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An exploded diagram of a button battery structure with an insulating support member of the present invention.

[0018] Figure 2 A top view of a button battery with an insulating support member according to the present invention.

[0019] Figure 3 A button battery with an insulating support member according to the present invention Figure 2 AA section view.

[0020] Description of Figure Number

[0021] 1…Upper cover 2…Lower shell 3…Insulating ring

[0022] 4…First pole ear 5…Second pole ear 6…Flange

[0023] 7…positive electrode 8…separator 9…negative electrode

[0024] 10…lower insulating layer 11…winding body 12…sealing ring

[0025] 13... slot 14... insulation column 15... insulation disk

[0026] 16...Insulating support 17...Pressing 18...First through hole

[0027] 19…Second through hole 20…First avoidance pit DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "vertical", "horizontal" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] The following is combined with the attached drawings Figures 1 to 3 A button cell with an insulating support member of the present invention is described in further detail.

[0030] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3The relevant figures include an upper cover 1, an insulating support 16, a winding body 11 and a lower shell 2, wherein the upper cover 1 and the lower shell 2 are both made of conductive materials, the lower shell 2 is surrounded by a sealed cavity for accommodating the winding body 11, the insulating support 16 is clamped between the upper cover 1 and the winding body 11, the top of the lower shell 2 and the outer periphery of the upper cover 1 are respectively releasably sealed and clamped with the outer and inner sides of the outer periphery of the insulating support 16, the axis of the insulating support 16 is detachably plugged into the center of the winding body 11, the winding body 11 is soaked with electrolyte, a first pole ear 4 is arranged on the upper end surface of the winding body 11, a second pole ear 5 is arranged on the lower end surface of the winding body 11, the free end of the first pole ear 4 is fixed to the inner wall of the upper cover 1, and the free end of the second pole ear 5 is fixed to the inner wall of the lower shell 2. In this way, the first pole ear 4 and the second pole ear 5 are connected to the upper end surface and the lower end surface of the winding body 11 respectively, and the free end of the second pole ear 5 is first fixed to the inner wall of the lower shell 2, and then the winding body 11 is accommodated in the sealed cavity formed by the lower shell 2, and the amount of the electrolyte required for infiltration is calculated according to the volume of the winding body 11, and the electrolyte is injected from the insertion position of the insulating support 16 to fully infiltrate the entire winding body 11. The edge support member 16 is shallowly inserted into the winding body 11 from above the winding body 11, and at the same time, the first pole ear 4 passes through the insulating support member 16 and is fixed to the inner wall of the upper cover 1. The first pole ear 4 can be fixed to the inner wall of the upper cover 1 from the outer peripheral edge of the insulating support member 16, that is, it is fixed to any position from the edge of the insulating support member 16 around the inner wall of the upper cover 1. When the first pole ear 4 is fixed to the inner wall of the upper cover 1, the outer periphery of the upper cover 1 is fixed to the inner wall of the upper cover 1. The outer periphery of the insulating support 16 is clamped so that the outer periphery of the insulating support 16 covers the outer periphery of the upper cover 1, and then the upper cover 1 and the insulating support 16 are inserted into the winding body 11 together, and the outer periphery of the insulating support 16 is releasably sealed and clamped with the inner wall of the lower shell 2 to complete the assembly of the entire button battery. In this way, the winding body 11 is directly loaded into the lower shell 2, so that the space of the sealed cavity can be utilized to the maximum extent, and the capacity of the button battery can be greatly improved. The winding body 11 is fully infiltrated with the electrolyte, and there is no excess electrolyte in the sealed cavity, so as not to cause any corrosion to the upper cover 1 and the lower shell 2, and the entire metal shell including the upper cover 1 and the lower shell 2 are directly connected to the first pole ear 4 and the second pole ear 5, so the upper cover 1 and the lower shell 2 are directly charged, and the customer can set the positive and negative poles of the power-taking structure of the device at any position in contact with the upper cover 1 and the lower shell 2, respectively, so the device can be designed to be more miniaturized.The top of the lower shell 2 and the outer periphery of the upper cover 1 are respectively releasably sealed and clamped with the outer and inner sides of the outer periphery of the insulating support 16, so as to insulate the upper cover 1 and the lower shell 2, prevent the upper cover 1 and the lower shell 2 from directly contacting each other and causing a short circuit, and also seal and fix the gap between the upper cover 1 and the lower shell 2. The button battery with an insulating support of the present invention has the advantages of simple structure, high space utilization, increased battery capacity, flexible product design and prevention of battery explosion compared with the prior art.

[0031] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3 In the relevant figures, on the basis of the previous technical solution, the insulating support member 16 may also be: the insulating support member 16 includes an insulating disk 15, the outer periphery of the insulating disk 15 is respectively sealed and clamped with the outer periphery of the upper cover 1 and the top of the lower shell 2 in a releasable manner, and the axis of the insulating disk 15 is detachably inserted in the center of the winding body 11. In this way, the outer periphery of the insulating disk 15 is sandwiched between the upper cover 1 and the lower shell 2, filling the gap at the clamping position of the upper cover 1 and the lower shell 2, so that the upper cover 1 and the lower shell 2 are prevented from direct contact. During the use process after the upper cover 1 and the first pole ear 4 are fixed, and the lower shell 2 and the second pole ear 5 are fixed, the upper cover 1 and the lower shell 2 will be respectively positively or negatively charged. If the two are in direct contact and a closed circuit is formed inside the winding body 11, a short circuit is caused. A further preferred technical solution is that the outer periphery of the insulating disk 15 is integrally formed or fixed with a sealing ring 12 covering the outer peripheral edge of the upper cover 1, and the outer side of the sealing ring 12 is releasably sealed and clamped with the top of the lower shell 2. In this way, the sealing ring 12 covers the outer peripheral edge of the upper cover 1 and the upper and lower parts that may come into contact with the lower shell 2, completely isolating the possible contact parts of the upper cover 1 and the lower shell 2, making the button battery safer, and completely eliminating the contact between the upper cover 1 and the lower shell 2, avoiding the danger of short circuit of the button battery due to the contact of the shell. A further preferred technical solution is that the sealing ring 12 is made of elastomeric materials such as silicone and TPU. In this way, silicone, TPU and other elastomeric materials are widely used in daily necessities, sporting goods, toys, decorative materials and other fields because they do not react with any substance, are insoluble in water and any solvent, are non-toxic and odorless, have stable chemical properties, are wear-resistant, oil-resistant, transparent and have good elasticity. The sealing ring 12 made of silicone, TPU and other elastomeric materials is clamped at the clamping position of the upper cover 1 and the lower shell 2, filling the gap between the upper cover 1 and the lower shell 2, which not only prevents the electrolyte from seeping out of the button battery over time, but also makes the relative fixed position of the upper cover 1 and the lower shell 2 more stable.

[0032] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3 In the relevant figures, on the basis of the previous technical solution, it can also be: an insulating column 14 is integrally formed or fixed at the axial position of the insulating disk 15, and the insulating column 14 is detachably plugged into the center of the winding body 11, and the bottom of the insulating column 14 is releasably abutted against the lower shell 2. In this way, the insulating column 14 extends the axial position of the insulating disk 15, and the bottom of the insulating column 14 is releasably abutted against the lower shell 2, and then the insulating column 14 longitudinally supports the upper cover 1 and the lower shell 2 at the axial position of the insulating disk 15, that is, the center position of the button battery, providing a strong support point for the winding body 11 accommodated in the sealed cavity, so that the relative position of the central position of the upper cover 1 and the lower shell 2 is not easy to be concave and squeeze the winding body 11 inside.

[0033] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3 In the relevant figures, on the basis of the previous technical solution, the lower shell 2 can also be provided with a concave card slot 13 at the card-joining position with the insulating support member 16, and the insulating support member 16 is releasably sealed and card-joined with the lower shell 2 at the top position of the card slot 13. In this way, the outer periphery of the insulating support member 16 tightly covers the outer periphery of the upper cover 1, and the card slot 13 tightly clamps the insulating support member 16 and the upper cover 1 at the position where the card slot 13 and the top edge of the lower shell 2 are clamped, so that the insulating support member 16 and the upper cover 1 can maintain a stable fixed position together, and will not be offset or tilted due to different external force positions and sizes. A further preferred technical solution is that a flange 6 is provided at the top edge of the lower shell 2, and the flange 6 is folded toward the axial position of the lower shell 2. In this way, after the upper metal 1 and the insulating support 16 are inserted into the winding body 11, the top of the lower shell 2 that protrudes beyond the edge of the upper cover 1 is pressed to form the flange 6. The convex shape formed by the flange 6 and the slot 13 can tightly clamp the outer periphery of the upper cover 1 and the insulating support 16 on the top inner wall of the lower shell 2.

[0034] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3In the relevant figures, on the basis of the previous technical solution, the winding body 11 may also be: the winding body 11 is cylindrical, the winding body 11 includes a positive electrode sheet 7, a negative electrode sheet 9 and a separator 8, the positive electrode sheet 7 and the negative electrode sheet 9 are alternately stacked and wound to form a cylindrical shape, the separator 8 is arranged between the positive electrode sheet 7 and the negative electrode sheet 9, the first pole ear 4 and the positive electrode sheet 7 are fixed on the upper end surface of the winding body 11, and the second pole ear 5 and the negative electrode sheet 9 are fixed on the lower end surface of the winding body 11. In this way, the winding body 11 is cylindrical, so that the space occupied by the winding body 11 is small, saving space. The winding body 11 is formed by winding the positive electrode sheet 7, the separator 8 and the negative electrode sheet 9, and the separator 8 is used to prevent the positive electrode sheet 7 and the negative electrode sheet 9 from contacting and short-circuiting. The first pole ear 4 is connected to the positive electrode sheet 7, and the second pole ear 5 is connected to the negative electrode sheet 9. The specific position can be set according to actual conditions. The insulating support 16 is inserted at the axial position of the winding body 11, that is, the positive electrode sheet 7, the negative electrode sheet 9 and the isolation film 8 are stacked and wound with the insulating support 16 as the axis, and the insulating support 16 increases the radial support force of the winding body 11. The positive electrode sheet 7 is usually made of aluminum sheet, and the negative electrode sheet 9 is usually made of nickel or copper. The negative electrode sheet 9 has the function of embedding and extracting lithium ions. The isolation film 8 is a porous plastic sheet with electronic insulation properties but capable of ion conduction. The first pole ear 4 and the positive electrode sheet 7 are fixed on the upper end surface of the winding body 11, and the second pole ear 5 and the negative electrode sheet 9 are fixed on the lower end surface of the winding body 11, so that the free end of the first pole ear 4 is fixed to the inner wall of the upper cover 1, and the free end of the second pole ear 5 is fixed to the inner wall of the lower shell 2. During use, the upper cover 1 is the positive electrode, and the lower shell 2 is the negative electrode. Of course, the first pole tab 4 and the negative electrode sheet 9 can also be fixed on the upper end face of the winding body 11, the second pole tab 5 and the positive electrode sheet 7 can be fixed on the lower end face of the winding body 11, the free end of the first pole tab 4 can be fixed to the inner wall of the upper cover 1, and the free end of the second pole tab 5 can be fixed to the inner wall of the lower shell 2. During use, the upper cover 1 is the negative electrode, and the lower shell 2 is the positive electrode. Because the positive electrode sheet 7 and the negative electrode sheet 9 are both stacked and wound around the axis, the positive electrode sheet 7 and the negative electrode sheet 9 can be arbitrarily led out on the upper and lower end faces of the winding body 11, and then the positive and negative electrodes of the button battery can be arbitrarily arranged, so as to facilitate customers to set the positive and negative electrodes of the equipment and make the use of button batteries more convenient and simple.

[0035] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3In the relevant figures, on the basis of the previous technical solution, it can also be that: the winding body 11 and the lower shell 2 are sandwiched with the lower insulating layer 10. In this way, the free end of the second pole ear 5 passes through the lower insulating layer 10 and is fixed to the inner wall of the lower shell 2, and the free end of the second pole ear 5 can be fixed to the inner wall of the lower shell 2 from the outer peripheral edge of the lower insulating layer 10 through the lower insulating layer 10, that is, the free end of the second pole ear 5 bypasses the edge of the lower insulating layer 10 and is fixed to the inner wall of the lower shell 2 at any position. When the second pole ear 5 is connected to the lower shell 2, the lower shell 2 can be a negative electrode or a positive electrode. If the lower shell 2 is a negative electrode, it can further prevent the positive electrode sheet 7 inside the winding body 11 from being electrically connected to the lower shell 2, thereby causing a short circuit. On the contrary, if the lower shell 2 is a positive electrode, it can further prevent the negative electrode sheet 9 inside the winding body 11 from being electrically connected to the lower shell 2, thereby causing a short circuit. A further preferred technical solution is that the lower insulating layer 10 is provided with a second through hole 19 at a position corresponding to the free end of the second pole ear 5, and the free end of the second pole ear 5 passes through the second through hole 19 and is fixed to the lower shell 2. In this way, the free end of the second pole ear 5 first passes through the second through hole 19, and the second through hole 19 further defines the position of the second pole ear 5, preventing the free end of the second pole ear 5 from being displaced or repeatedly bent and broken during use. A further preferred technical solution is that a second avoidance pit is provided on the lower surface of the lower insulating layer 10, and the free end of the second pole ear 5 passes through the second through hole 19 and fits tightly with the second avoidance pit. In this way, the second avoidance pit further defines the free end of the second pole ear 5, so that the part of the free end of the second pole ear 5 after passing through the second through hole 19 is completely fixed in the second avoidance pit, so that the entire part of the second pole ear 5 will not be displaced or repeatedly bent during use, ensuring that the second pole ear 5 is always effectively electrically connected to the winding body 11 and the lower shell 2 during use.

[0036] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3In the relevant figures, on the basis of the previous technical solution, it can also be that: the upper cover 1 is provided with a stamping 17 for releasing pressure, and the concave or convex stamping 17 is fixed to the upper cover 1 in an integral molding manner. In this way, the thickness of the stamping 17 is kept consistent with the thickness of the upper cover 1 by using a stamping process, and the longitudinal section of the stamping 17 is misaligned with the longitudinal section of the upper cover 1 at the connection between the two, that is, the thickness of the connection between the stamping 17 and the upper cover 1 becomes thinner, and the load per unit area that can be borne is reduced. When the button battery fails and causes an internal short circuit or an external short circuit in the battery, and the electronic component does not cut off the circuit, for example, the isolation film 8 does not automatically close the pores when the internal temperature of the battery is too high, which causes part of the electrolyte to vaporize, prop up the upper cover 1 and the lower shell 2 and bulge outward, and when the internal air pressure reaches the maximum pressure that the connection between the stamping 17 and the upper cover 1 can withstand, the connection between the stamping 17 and the upper cover 1 will be automatically disconnected first to release the pressure to prevent the battery from exploding. A further preferred technical solution is that the stamp 17 is in the shape of a ring with the axis of the upper cover 1 as the center. In this way, when a short circuit occurs inside the button battery and the upper cover 1 is propped up and bulged outward, when the internal gas pressure reaches the maximum pressure that the connection between the stamp 17 and the upper cover 1 can withstand, the disconnection point of the stamp 17 is also in the shape of a ring with the axis of the upper cover 1 as the center, so that the upper cover 1 that is broken inside the stamp 17 is subjected to balanced force, and the upper cover 1 is prevented from having an irregular fracture end face due to uneven force when breaking, which may affect external devices using the button battery.

[0037] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3 In the relevant figures, on the basis of the previous technical solution, it can also be that: the insulating support member 16 is provided with a first through hole 18 at a position corresponding to the free end of the first pole lug 4, and the free end of the first pole lug 4 passes through the first through hole 18 and is fixed to the upper cover 1. In this way, the free end of the first pole lug 4 first passes through the first through hole 18, and the first through hole 18 further limits the position of the first pole lug 4 to prevent the free end of the first pole lug 4 from being displaced or repeatedly bent and broken during use. A further preferred technical solution is that the upper surface of the insulating support member 16 is provided with a first avoidance pit 20, and the free end of the first pole lug 4 passes through the first through hole 18 and fits tightly with the first avoidance pit 20. In this way, the first avoidance pit 20 further limits the free end of the first pole lug 4, so that the free end of the first pole lug 4 is completely fixed in the first avoidance pit 20 after passing through the first through hole 18, so that the entire part of the first pole lug 4 will not be displaced or repeatedly bent during use, thereby ensuring that the first pole lug 4 always maintains effective electrical connection with the winding body 11 and the upper cover 1 during use.

[0038] A button battery with an insulating support of the present invention, please refer to Figures 1 to 3 In the relevant figures, on the basis of the previous technical solution, it can also be that: the top of the lower shell 2 is detachably fixed with an insulating ring 3. In this way, it will finally prevent the upper cover 1 and the lower shell 2 from being electrically connected after the device using the button battery is connected to the battery, thereby preventing the short circuit outside the battery from occurring.

[0039] The above only describes several specific embodiments of the present invention, but cannot be regarded as the protection scope of the present invention. Any equivalent changes or modifications or proportional enlargement or reduction made according to the design spirit of the present invention should be considered to fall within the protection scope of the present invention.

Claims

1. A button battery with an insulating support, characterized in that: The invention comprises an upper cover, an insulating support, a winding body and a lower shell, wherein the upper cover and the lower shell are both made of conductive materials, the lower shell is surrounded to form a sealed cavity for accommodating the winding body, the insulating support is clamped between the upper cover and the winding body, the top of the lower shell and the outer periphery of the upper cover are respectively sealed and clamped with the outer side and the inner side of the outer periphery of the insulating support in a releasable manner, the axis of the insulating support is detachably plugged into the center of the winding body, the winding body is soaked with electrolyte, a first pole ear is arranged on the upper end surface of the winding body, a second pole ear is arranged on the lower end surface of the winding body, and the free end of the first pole ear is connected to the inner wall of the upper cover. The insulating support comprises an insulating disk, the outer periphery of which is releasably sealed and clamped with the outer periphery of the upper cover and the top of the lower shell respectively, and the axis of the insulating disk is detachably plugged into the center of the winding body; an insulating column is integrally formed or fixed at the axis position of the insulating disk, the insulating column is detachably plugged into the center of the winding body, and the bottom of the insulating column is releasably abutted against the lower shell; a sealing ring covering the outer peripheral edge of the upper cover is integrally formed or fixed on the outer periphery of the insulating disk, and the outer side of the sealing ring is releasably sealed and clamped with the top of the lower shell.

2. A button battery with an insulating support according to claim 1, characterized in that: The lower shell is provided with an inwardly concave clamping groove at the clamping position with the insulating support member, and the insulating support member is releasably sealed and clamped with the lower shell at the top position of the clamping groove.

3. A button battery with an insulating support according to claim 1 or 2, characterized in that: The wound body is cylindrical, and includes a positive electrode sheet, a negative electrode sheet and a separator. The positive electrode sheet and the negative electrode sheet are alternately stacked and wound to form a cylindrical shape. The separator is arranged between the positive electrode sheet and the negative electrode sheet. The first electrode ear and the positive electrode sheet are fixed to the upper end surface of the wound body, and the second electrode ear and the negative electrode sheet are fixed to the lower end surface of the wound body.

4. A button cell with an insulating support according to claim 1 or 2, characterized in that: The upper cover is provided with a stamp for releasing pressure, and the stamp which is concave or convex is fixed to the upper cover in an integral manner.

5. A button cell with an insulating support according to claim 4, characterized in that: The stamp is in a circular shape with the axis of the upper cover as the center.

6. A button cell with an insulating support according to claim 1 or 2, characterized in that: The insulating support is provided with a first through hole at a position corresponding to the free end of the first pole lug, and the free end of the first pole lug passes through the first through hole and is fixed to the upper cover.

7. A button cell with an insulating support according to claim 1 or 2, characterized in that: An insulating ring is detachably fixedly provided on the top of the lower shell.

Images