Button cell

Abstract

The utility model relates to a button cell. The button battery comprises a battery body, a counteracting part, a positive wire and a negative wire, the battery body comprises a cover body, a cylinder body and a battery cell, the edge of the cover body and the end of the cylinder body are in insulated connection to define a containing cavity, the edge of the cover body forms a sealing opening, and the battery cell is wound in the containing cavity in the preset rotating direction; the battery cell is provided with a positive pole lug, a negative pole lug and a negative pole extension section, the positive pole lug is connected with the cover body, and the negative pole lug is connected with the cylinder body. The counteracting part is arranged at the sealing position in the preset rotating direction, the rotating length of the counteracting part is equal to or larger than that of the negative electrode extension section, the current direction of the counteracting part is opposite to that of the negative electrode extension section, and the counteracting part is connected with the cover body. The positive wire is connected with the counteracting part, the negative wire is connected with the cylinder, the counteracting part is electrified to generate a counteracting magnetic field to weaken magnetic interference of the magnetic field generated by the negative extension section on surrounding electromagnetic sensitive devices, and the positive wire and the negative wire are electrically connected, so that the installation is convenient.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to button batteries. Background Art

[0002] With the popularization of electronic devices such as TWS headphones (True Wireless Stereo), button batteries have been widely used.

[0003] A button battery includes a battery cell, which is formed by stacking and winding a positive electrode sheet, a negative electrode sheet and a diaphragm. Due to design and processing requirements, the end of the negative electrode sheet of the battery cell often needs to be longer than the end of the positive electrode sheet to form an extended section. When the button battery is working, the extended section will generate a magnetic field, which will interfere with the electromagnetic sensitive devices around the button battery. The TWS earphones include an ear shell, a button battery installed in the inner cavity of the ear shell, a circuit main board, a speaker and a microphone. Due to wearing needs, the TWS earphones are designed to be smaller in size, and the distance between the circuit main board, the speaker and the microphone and the button battery is small. The TWS earphones have a compact structure. When in use, the magnetic field generated by the extended section of the negative electrode sheet will generate magnetic interference noise, affecting the sound quality.

[0004] Moreover, button batteries are usually provided with a positive electrode on one side and a negative electrode on the other side. After the button battery is installed in the battery slot, a pressing piece needs to be separately installed to abut against the button battery. Moreover, the pressing piece is easily damaged when the battery is removed, making the installation and removal of the battery inconvenient. Summary of the invention

[0005] Based on this, it is necessary to provide a button battery to address the problem that the negative electrode extension section of the button battery is prone to generate magnetic interference to surrounding electromagnetic sensitive devices and is inconvenient to disassemble and assemble.

[0006] An embodiment of the first aspect of the present application provides a button battery, the button battery comprising:

[0007] A battery body, comprising a cover, a barrel and a battery cell, wherein the edge of the cover is insulated and connected to the end of the barrel to enclose and form a receiving cavity, the edge of the cover forms a seal, the battery cell is wound along a preset rotation direction and arranged in the receiving cavity, the battery cell is provided with a positive electrode tab, a negative electrode tab and a negative electrode extension section, the negative electrode tab is arranged on the negative electrode extension section, the positive electrode tab is connected to the cover, and the negative electrode tab is connected to the barrel;

[0008] A compensating member, the compensating member is arranged at the sealing position along the preset rotation direction, the winding length of the compensating member is equal to or greater than the winding length of the negative electrode extension section, and the current direction of the compensating member is opposite to the current direction of the negative electrode extension section, and the compensating member is connected to the cover body;

[0009] A positive lead, the positive lead is connected to the compensation component, and the positive lead is used to be electrically connected to the positive electrode of the electrical component;

[0010] A negative electrode wire is connected to the cylinder and is used to be electrically connected to the negative electrode of an electrical device.

[0011] In one embodiment, the offset member comprises:

[0012] A convoluted plate, the convoluted plate being arranged at a sealing position along the preset rotation direction, and the convoluted plate being connected to the positive electrode wire;

[0013] A fixing plate is connected to the end of the convoluted plate, the fixing plate is electrically connected to the cover body, and the fixing plate supports the convoluted plate away from the sealing position to form a support distance.

[0014] In one of the embodiments, the fixing plate is arranged corresponding to the position of the positive electrode tab along the axial direction of the battery cell, and the winding plate is arranged corresponding to the position of the negative electrode extension section along the axial direction of the battery cell.

[0015] In one of the embodiments, the offset member further includes a connecting plate, the connecting plate is connected to the winding plate, the connecting plate and the fixing plate are respectively arranged at two ends of the winding plate, and the positive electrode wire is connected to the connecting plate.

[0016] In one embodiment, at least a portion of the positive electrode wire is welded to the surface of the connecting plate, and the surface of the fixing plate is welded to the surface of the cover body.

[0017] In one embodiment, the button battery further includes a negative electrode sheet, the negative electrode sheet is connected to the bottom wall of the cylinder, and the negative electrode wire is electrically connected to the negative electrode sheet.

[0018] In one embodiment, at least a portion of the negative electrode lead is welded to one surface of the negative electrode sheet, and the other surface of the negative electrode sheet is welded to the bottom wall of the cylinder.

[0019] In one embodiment, the button battery further includes a protective sleeve, which is sleeved on the side wall of the cylinder, one end of which extends to the cover body and covers the sealing position, and the protective sleeve is located between the winding plate and the cover body.

[0020] In one embodiment, the button battery further comprises:

[0021] A first protective cover, wherein the first protective cover is mounted on the cover body and covers the offset member;

[0022] A second protective cover, the second protective cover is mounted on the bottom wall of the cylinder, and the second protective cover covers the negative electrode sheet;

[0023] Wherein, the circumferential edge of the first protective cover is connected to the protective sleeve, and the circumferential edge of the second protective cover is connected to the protective sleeve.

[0024] In one embodiment, the positive electrode lead and the negative electrode lead are arranged at corresponding lead-out positions in the circumferential direction of the cylinder.

[0025] The button battery is provided with a compensation member, a positive electrode wire and a negative electrode wire on the battery body, and the compensation member is provided at the sealing position along a preset rotation direction. The compensation member can not only protect the sealing position, but also reduce the leakage caused by damage to the sealing position. Moreover, the compensation member uses the battery body as a power source, and the compensation member is energized to generate a compensation magnetic field, which can reduce the magnetic interference of the magnetic field generated by the negative electrode extension section on the surrounding electromagnetic sensitive devices, so that the electromagnetic sensitive devices can work normally. The compensation member is energized with the electrical component by leading out the positive electrode wire, and the cylinder is connected to the electrical component by leading out the negative electrode wire. The positive electrode wire and the negative electrode wire can be extended to a long distance outside the battery body and then connected to the electrical component. On the basis of forming a compensation magnetic field on the negative electrode extension section by the compensation member, the layout distance between the button battery and the electrical component can be increased, and the electromagnetic interference between the button battery and the electrical component can be further reduced. Moreover, the electrical connection with the electrical component is performed by the positive electrode wire and the negative electrode wire, which reduces the setting of pins and other plates, and the connection and use are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic diagram of the overall structure of a button battery according to an embodiment of the present application.

[0027] FIG. 2 is a schematic diagram of the internal structure of a button battery according to an embodiment of the present application.

[0028] FIG. 3 is an enlarged view of view A in FIG. 2 .

[0029] FIG. 4 is a top view of a button battery cell according to an embodiment of the present application.

[0030] FIG. 5 is a schematic diagram showing the positions of the negative electrode wire and the negative electrode sheet of the button battery according to an embodiment of the present application.

[0031] FIG. 6 is a schematic diagram showing the position of the protective cover of the button battery according to an embodiment of the present application.

[0032] FIG. 7 is a schematic diagram showing the position of the first protective cover of the button battery in an embodiment of the present application.

[0033] FIG. 8 is a schematic diagram showing the position of a second protective cover of a button battery in an embodiment of the present application.

[0034] In the figure:

[0035] 1. Battery body;

[0036] 11. cover body; 12. cylinder body;

[0037] 13. battery cell; 131. positive electrode tab; 132. negative electrode tab; 133. negative electrode extension section;

[0038] 14. Accommodating cavity; 15. Sealing; 16. Insulating sealing ring;

[0039] 2. Offsetting member; 21. Convoluted plate; 22. Fixed plate; 23. Connecting plate;

[0040] 3. Positive wire; 4. Negative wire; 5. Negative plate;

[0041] 61. First protective cover; 62. Second protective cover; 63. Protective sleeve. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0048] 1-3, a button battery provided in an embodiment of the present application includes a battery body 1, a compensation member 2, a positive electrode wire 3 and a negative electrode wire 4. The battery body 1 includes a cover 11, a cylinder 12 and a battery cell 13. The edge of the cover 11 is insulated and connected to the end of the cylinder 12 to enclose a accommodating cavity 14. The edge of the cover 11 forms a seal 15. The seal 15 is flat and located at one end of the cylinder 12 for easy positioning and installation.

[0049] Referring to Figures 3-4, the X direction shown in Figure 4 is a preset rotation direction, and the battery cell 13 is wound in the preset rotation direction and arranged in the accommodating chamber 14. The battery cell 13 is provided with a positive electrode tab 131, a negative electrode tab 132 and a negative extension section 133. The negative electrode tab 132 is connected to the negative extension section 133. For example, the negative electrode tab 132 can be connected to the end of the negative extension section 133, and the negative electrode tab 132 and the negative extension section 133 are energized. The positive electrode tab 131 is connected to the cover body 11 so that the positive electrode tab 131 and the cover body 11 are energized, and the cover body 11 is positive. The negative electrode tab 132 is connected to the barrel 12 so that the negative electrode tab 132 and the barrel 12 are energized, and the barrel 12 is negative.

[0050] Referring to Fig. 1-2, the offset member 2 is arranged at the seal 15 position along the preset rotation direction. The offset member 2 can not only protect the seal 15 position, but also reduce the leakage caused by the damage of the seal 15 position, and facilitate the equal distance arrangement between the offset member 2 and the corresponding position of the negative extension section 133. The winding length of the offset member 2 is equal to or greater than the winding length of the negative extension section 133, and the current direction of the offset member 2 is opposite to the current direction of the negative extension section 133, so that the range of the offset magnetic field generated by the offset member 2 can be equal to or greater than the magnetic field range of the negative extension section 133, and the magnetic field direction of the offset magnetic field generated by the offset member 2 is opposite to the magnetic field direction generated by the negative extension section 133, so that the offset magnetic field generated by the offset member 2 can weaken the magnetic interference of the magnetic field generated by the negative extension section 133 on the surrounding electromagnetic sensitive devices, so that the electromagnetic sensitive devices can work normally. The offset member 2 is connected to the cover body 11. The offset member 2 uses the battery body 1 as a power source. The offset member 2 is energized to generate a offset magnetic field, and the current intensity of the offset member 2 can be equal to the current intensity of the negative pole extension section 133. While the offset member 2 is energized, the demagnetization effect can be achieved.

[0051] Referring to Figures 1-2, the positive wire 3 is connected to the compensation member 2, and the positive wire 3 is used to electrically connect to the positive electrode of the electrical component. The negative wire 4 is connected to the cylinder 12, and the negative wire 4 is used to electrically connect to the negative electrode of the electrical equipment, that is, the compensation member 2 is energized by leading out the positive wire 3 and the electrical component, and the cylinder 12 is connected to the electrical component by leading out the negative wire 4. The positive wire 3 and the negative wire 4 can be extended to a long distance outside the battery body 1 and then connected to the electrical component. On the basis of forming a counteracting magnetic field for the negative extension section 133 through the compensation member 2, the layout distance between the button battery and the electrical component can be increased, and the electromagnetic interference between the button battery and the electrical component can be reduced. In addition, the electrical connection with the electrical component is carried out by the positive wire 3 and the negative wire 4, which reduces the setting of pins and other boards, and the connection is more convenient, which solves the problem that the negative extension section of the button battery is prone to magnetic interference with surrounding electromagnetic sensitive devices and is inconvenient to disassemble and assemble.

[0052] Referring to Fig. 1-2, in some embodiments, the offset member 2 includes a convoluted plate 21 and a fixed plate 22, the convoluted plate 21 is arranged at the sealing 15 position along a preset rotation direction, and the convoluted plate 21 is connected to the positive electrode wire 3, so that the convoluted plate 21 and the positive electrode wire 3 are energized. The fixed plate 22 is connected to the end of the convoluted plate 21, and the fixed plate 22 is electrically connected to the cover body 11. The convoluted plate 21 and the negative electrode extension section 133 are coaxially arranged along a preset rotation direction, and the convoluted plate 21 and the fixed plate 22 are energized, and a current in the opposite direction to the negative electrode extension section 133 flows into the convoluted plate 21, so that a counteracting magnetic field is formed at the convoluted plate 21, so as to reduce the magnetic interference of the magnetic field generated by the negative electrode extension section 133 on the surrounding electromagnetic sensitive devices. The fixed plate 22 supports the spiral plate 21 away from the seal 15 to form a support distance, so as to reduce the contact between the spiral plate 21 and the cover body 11 or the cylinder body 12 and reduce current mixing, so that the current of the spiral plate 21 can be transmitted in a preset direction, thereby enabling the spiral plate 21 to maintain a stable current and offset the magnetic field, thereby ensuring the magnetic field offsetting effect of the offsetting member 2 on the negative pole extension section 133.

[0053] 3 , the fixing plate 22 can separate the rotating plate 21 in the following manner: the thickness of the fixing plate 22 can be greater than the thickness of the rotating plate 21, and the rotating plate 21 is connected to the side of the fixing plate 22. Alternatively, the rotating plate 21 can be connected to the top of the fixing plate 22, so that the fixing plate 22 separates the rotating plate 21 from the cover 11.

[0054] Referring to Figure 1, in this embodiment, the fixed plate 22 can be bent from one side of the end of the winding plate 21 toward the center of the winding plate 21. The fixed plate 22 can be a sheet or block structure. The surface of the fixed plate 22 is fixedly connected to the surface of the cover body 11. The connection can be but not limited to welding, such as laser welding or resistance welding, which can make the fixed plate 22 and the cover body 11 firmly connected and maintain good electrical conductivity, and the connection area is large.

[0055] Referring to FIGS. 1-3 , the widths of the convoluted plate 21 are equal, so that the magnetic field distribution of the convoluted plate 21 along the preset rotation direction is more uniform, and the magnetic field offsetting effect of the convoluted plate 21 on the negative extension section 133 is improved. The convoluted plate 21 is parallel to the negative extension section 133, so that the distances between the convoluted plate 21 and the corresponding positions of the negative extension section 133 are equal. Specifically, the negative extension section 133 can be parallel to the surface of the cover body 11, the offset member 2 is parallel to the surface of the cover body 11, and the convoluted plate 21 and the negative extension section 133 are both arranged along the preset rotation direction, so that the distances between the convoluted plate 21 and the corresponding positions of the negative extension section 133 are equal. Moreover, the convolute plate 21 and the negative pole extension section 133 can be installed with the cover body 11 as a standard, which can facilitate installation and positioning, reduce the tilt of the convolute plate 21 after installation, and also make the cover body 11 an external reference during maintenance of the convolute plate 21, thereby improving the parallelism between the convolute plate 21 and the negative pole extension section 133.

[0056] Referring to FIGS. 3-4 , in some embodiments, the fixed plate 22 is arranged corresponding to the position of the positive pole ear 131 along the axial direction of the battery cell 13, and the winding plate 21 is arranged corresponding to the position of the negative pole extension section 133 along the axial direction of the battery cell 13, that is, the compensation member 2 is set with the positive pole ear 131 as the starting position, the position of the fixed plate 22 corresponds to the position of the positive pole ear 131, the winding plate 21 is wound along a preset direction from the position of the positive pole ear 131 to cover the negative pole extension section 133, and the winding length of the winding plate 21 is equal to or greater than the winding length of the negative pole extension section 133 , so that the magnetic field range of the winding plate 21 that cancels the magnetic field is equal to or greater than the magnetic field range of the negative extension section 133, and the negative extension section 133 is an extension section of the negative electrode roll that exceeds the positive electrode ear 131, and the position of the fixed plate 22 corresponds to the position of the positive electrode ear 131, so that the first end of the winding plate 21 can be flush with the end of the negative extension section 133, and the second end of the winding plate 21 is equal to or greater than the end of the negative extension section 133 where the negative electrode ear 132 is set, which can reduce the mutual interference between the winding plate 21 and the winding part of the battery cell 13.

[0057] In this embodiment, the fixing plate 22 and the positive electrode wire 3 can be connected to two end positions of the winding plate 21 respectively, and the two ends of the winding plate 21 are arranged opposite to each other.

[0058] Referring to Figures 1-2, in some embodiments, the offset member 2 also includes a connecting plate 23, which is connected to the winding plate 21. The connecting plate 23 and the fixing plate 22 are respectively arranged at the two ends of the winding plate 21, and the positive wire 3 is connected to the connecting plate 23. By setting the connecting plate 23, this embodiment can increase the connection length between the offset member 2 and the positive wire 3, stabilize the connection, and reduce the possibility of the positive wire 3 falling off.

[0059] In this embodiment, the connecting plate 23 can be extended from the end of the winding plate 21 toward the winding center of the winding plate 21, the width of the connecting plate 23 is greater than the width of the winding plate 21, and the position of the connecting plate 23 and the position of the fixed plate 22 can be symmetrically arranged about the winding center of the winding plate 21. Among them, the positive electrode wire 3 can be extended along the radial direction of the cylinder 12. The fixed plate 22, the winding plate 21 and the connecting plate 23 are integrally formed to reduce the number of connection positions to reduce resistance, so as to maintain sufficient magnetic field strength at the winding plate 21 and sufficient power supply current at the positive electrode wire 3.

[0060] 1-2 , in some embodiments, at least a portion of the positive electrode wire 3 is welded to the surface of the connecting plate 23, and the surface of the fixing plate 22 is welded to the surface of the cover 11, and the welding method may be but is not limited to laser welding or resistance welding, which can ensure that the connection position between the positive electrode wire 3 and the connecting plate 23 and the connection position between the fixing plate 22 and the cover 11 are firmly connected, the current flows smoothly, and the displacement of the positive electrode wire 3 is reduced.

[0061] Referring to Figure 5, in some embodiments, the button battery also includes a negative electrode sheet 5, which is connected to the bottom wall of the cylinder 12 so that the negative electrode sheet 5 and the cylinder 12 are energized, and the negative electrode wire 4 is electrically connected to the negative electrode sheet 5. The area of ​​the negative electrode sheet 5 is much larger than the end area of ​​the negative electrode wire 4. The negative electrode wire 4 is connected to the bottom wall of the cylinder 12 through the negative electrode sheet 5, which can increase the connection area between the negative electrode wire 4 and the cylinder 12, so that the connection position between the negative electrode wire 4 and the negative electrode sheet 5 is firmly connected, reducing shaking or displacement, so as to offset the magnetic field and maintain a stable demagnetization effect.

[0062] In this embodiment, at least part of the negative electrode lead 4 is welded to one surface of the negative electrode sheet 5, and the other surface of the negative electrode sheet 5 is welded to the bottom wall of the cylinder 12, so that the connection area is large and the connection is stable. The welding method can be, but is not limited to, resistance welding or laser welding. The center position of the negative electrode sheet 5 can be located at the axis position of the cylinder 12, so that the negative electrode sheet is symmetrical about the axis center of the cylinder 12.

[0063] Among them, the shape of the negative electrode sheet 5 is configured as a rectangular parallelepiped, and the length direction of the negative electrode sheet 5 is along the length direction of the negative electrode wire 4, which can increase the supporting length of the negative electrode sheet 5 on the negative electrode wire 4, reduce the shaking and displacement of the negative electrode wire 4, and also make the position of the negative electrode wire 4 more accurate.

[0064] Referring to FIG. 6 , in some embodiments, the compensation sheet, the positive wire 3 and the negative wire 4 as well as the cylinder 12 and the cover 11 can all be made of hard conductive metal, which can be connected to the electrical components and can also maintain the stability of their own shapes, reducing the deformation that affects the demagnetization effect. For example, the material of the compensation sheet, the positive wire 3 and the negative wire 4 can be nickel, which is hard and ductile and has ferromagnetism, good conductivity, and is not easy to deform, so that the compensation sheet, the positive wire 3 and the negative wire 4 can maintain a preset shape, so that the compensation magnetic field of the compensation sheet is more stable. The material of the cover 11 and the cylinder 12 can be steel.

[0065] Referring to FIG. 6 , in some embodiments, the button battery further includes a protective sleeve 63, which is sleeved on the side wall of the cylinder 12 to insulate the side wall of the cylinder 12 from external devices and reduce power loss. One end of the protective sleeve 63 extends to the cover 11 and covers the seal 15, which can shield and protect the seal 15 and reduce damage from foreign objects. The protective sleeve 63 is located between the winding plate 21 and the cover 11 to keep a separation distance between the winding plate 21 and the cover 11, forming an insulating setting, and further reducing the contact between the winding plate 21 and the cover 11.

[0066] Referring to Figures 7-8, in some embodiments, the button battery further includes a first protective cover 61 and a second protective cover 62, wherein the first protective cover 61 is mounted on the cover body 11, and the first protective cover 61 covers the offset member 2, so that the first protective cover 61 can shield and protect the cover body 11 and the offset member 2, reduce the power loss caused by the contact between the cover body 11 and the offset member 2 and external devices, and enable the offset member 2 to maintain a good demagnetization effect. The second protective cover 62 is mounted on the bottom wall of the cylinder 12, and the second protective cover 62 covers the negative electrode sheet 5, so as to shield and protect the bottom wall of the cylinder 12 and the negative electrode sheet 5, insulate them from external devices, and reduce power loss. The circumferential edge of the first protective cover 61 is connected to the protective sleeve 63, and the circumferential edge of the second protective cover 62 is connected to the protective sleeve 63, so that the first protective cover 61, the second protective cover 62 and the protective sleeve 63 are connected to wrap the cover body 11 and the cylinder body 12 as a whole, reduce the contact between the corners of the cover body 11 and the cylinder body 12 and external components, and also reduce the damage of foreign objects to the battery body 1.

[0067] The materials of the first protective cover 61 , the second protective cover 62 and the protective sleeve 63 may be, but are not limited to, plastic, rubber or silicone.

[0068] Referring to Figures 6-7, in some embodiments, the lead-out positions of the positive wire 3 and the negative wire 4 in the circumferential direction of the cylinder 12 are correspondingly arranged, that is, the positive wire 3 and the negative wire 4 can be led out toward the same side of the cylinder 12, which is convenient for connecting with the electrical components located on one side of the cylinder 12, and can also reduce the interference of the magnetic field generated between the positive wire 3 and the negative wire 4 on the magnetic field of the negative extension section 133 and the compensation member 2, so that the compensation member 2 maintains a good demagnetization effect on the negative extension section 133.

[0069] In summary, the overall current direction of the button battery is: the current is output from the positive electrode ear 131, and is output to the positive electrode of the electrical component after passing through the cover body 11, the fixed plate 22 of the offset member 2, the winding plate 21, the connecting plate 23, and the positive electrode wire 3 in sequence. The electrical component obtains electrical energy to do work, and the current output at the negative electrode of the electrical component is input into the button battery through the negative electrode wire 4, and flows back to the battery cell 13 after passing through the negative electrode sheet 5, the cylinder 12, the negative electrode ear 132, and the negative electrode extension section 133 in sequence.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A button battery, It is characterized in that The button battery comprises: A battery body (1) comprises a cover (11), a barrel (12) and a battery cell (13); the edge of the cover (11) is insulated and connected to the end of the barrel (12) to enclose a receiving cavity (14); the edge of the cover (11) forms a seal (15); the battery cell (13) is wound along a preset rotation direction and arranged in the receiving cavity (14); the battery cell (13) is provided with a positive electrode tab (131), a negative electrode tab (132) and a negative electrode extension section (133); the negative electrode tab (132) is arranged on the negative electrode extension section (133); the positive electrode tab (131) is connected to the cover (11); and the negative electrode tab (132) is connected to the barrel (12); a compensating member (2), the compensating member (2) being arranged at the sealing (15) position along the preset rotation direction, the winding length of the compensating member (2) being equal to or greater than the winding length of the negative electrode extension section (133), and the current direction of the compensating member (2) being opposite to the current direction of the negative electrode extension section (133), and the compensating member (2) being connected to the cover body (11); A positive lead (3), the positive lead (3) being connected to the compensation element (2), and the positive lead (3) being used to be electrically connected to the positive electrode of an electrical component; A negative electrode wire (4), the negative electrode wire (4) is connected to the cylinder (12), and the negative electrode wire (4) is used to be electrically connected to the negative electrode of the electrical equipment.

2. The button battery according to claim 1, It is characterized in that The offset member (2) comprises: A winding plate (21), the winding plate (21) being arranged at the sealing (15) position along the preset rotation direction, and the winding plate (21) being connected to the positive electrode wire (3); A fixed plate (22), the fixed plate (22) is connected to the end of the rotating plate (21), the fixed plate (22) is electrically connected to the cover body (11), and the fixed plate (22) supports the rotating plate (21) away from the sealing (15) position to form a support distance.

3. The button battery according to claim 2, It is characterized in that The fixing plate (22) and the positive electrode tab (131) are arranged correspondingly to the axial position of the battery core (13), and the winding plate (21) and the negative electrode extension section (133) are arranged correspondingly to the axial position of the battery core (13).

4. The button battery according to claim 2, It is characterized in that The offset member (2) further comprises a connecting plate (23), wherein the connecting plate (23) is connected to the convoluted plate (21), the connecting plate (23) and the fixing plate (22) are respectively arranged at two ends of the convoluted plate (21), and the positive electrode wire (3) is connected to the connecting plate (23).

5. The button battery according to claim 4, It is characterized in that At least a portion of the positive electrode lead (3) is welded to the surface of the connecting plate (23), and the surface of the fixing plate (22) is welded to the surface of the cover body (11).

6. The button battery according to claim 2, It is characterized in that The button battery further comprises a negative electrode sheet (5), wherein the negative electrode sheet (5) is connected to the bottom wall of the cylinder (12), and the negative electrode wire (4) is electrically connected to the negative electrode sheet (5).

7. The button battery according to claim 6, It is characterized in that At least a portion of the negative electrode lead (4) is welded to one surface of the negative electrode sheet (5), and the other surface of the negative electrode sheet (5) is welded to the bottom wall of the cylinder (12).

8. The button battery according to claim 6, It is characterized in that The button battery further comprises a protective sleeve (63), wherein the protective sleeve (63) is sleeved on the side wall of the cylinder (12), one end of the protective sleeve (63) extends to the cover (11) and covers the sealing position (15), and the protective sleeve (63) is located between the winding plate (21) and the cover (11).

9. The button battery according to claim 8, It is characterized in that The button battery also includes: A first protective cover (61), wherein the first protective cover (61) is mounted on the cover body (11), and the first protective cover (61) covers the offset member (2); A second protective cover (62), the second protective cover (62) being mounted on the bottom wall of the cylinder (12), and the second protective cover (62) covering the negative electrode sheet (5); Wherein, the circumferential edge of the first protective cover (61) is connected to the protective sleeve (63), and the circumferential edge of the second protective cover (62) is connected to the protective sleeve (63).

10. The button battery according to claim 1, It is characterized in that The positive electrode lead (3) and the negative electrode lead (4) are arranged at corresponding lead-out positions in the circumferential direction of the cylinder (12).

Images