CN210006815U - Button type battery with path cut-off protection function - Google Patents
Button type battery with path cut-off protection function Download PDFInfo
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- CN210006815U CN210006815U CN201920697524.9U CN201920697524U CN210006815U CN 210006815 U CN210006815 U CN 210006815U CN 201920697524 U CN201920697524 U CN 201920697524U CN 210006815 U CN210006815 U CN 210006815U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a button type battery with passageway cuts off protect function rolls up the core through setting up encapsulation subassembly and battery. In the actual application process, the battery shell and the battery steel shell both play a role in packaging protection; the sealing rubber ring plays a role in sealing and waterproofing; when the battery rolls up the core and takes place the inflation because of the accident when, the cutting piece can push up under the battery rolls up the core inflation condition and holds utmost point ear, because utmost point ear is formed by the flexible material preparation, and the rigidity of the portion of bending is weak, under the condition that utmost point ear was held on the cutting piece top, the portion of bending can the deformation fracture, promptly utmost point ear break off with roll up being connected between the core, the voltage of rolling up the core output just can't be exported to outside power supply unit through cracked utmost point ear, roll up the core and still export voltage outward under the inflation state has been prevented effectively, arouse corresponding incident.
Description
Technical Field
The utility model relates to a battery technology field especially relates to kinds of button type batteries that have route and cut off protect function.
Background
Currently, a battery refers to a device that converts chemical energy into electrical energy in a portion of the space of a cup, tank, or other container or composite container that holds an electrolyte solution and metal electrodes to generate an electric current. Has a positive electrode and a negative electrode. With the advancement of technology, batteries generally refer to small devices, such as solar cells, that can generate electrical energy. The performance parameters of the battery are mainly electromotive force, capacity, specific energy and resistance. The battery is used as an energy source, can obtain current which has stable voltage and current, is stably supplied for a long time and is slightly influenced by the outside, has simple structure, convenient carrying, simple and easy charging and discharging operation, is not influenced by the outside climate and temperature, has stable and reliable performance, and plays a great role in various aspects of modern social life.
In order to realize monitoring and management of a battery, a protection plate is usually arranged in the battery structure and plays a role in monitoring and management of a battery roll core in the battery structure, so that the battery roll core is prevented from being still in a working state under a limit condition, the protection plate has a great significance for the battery roll core, but the protection plate is electronic components which are inevitable, the protection plate can not work normally when being used for periods, if the protection plate can not work normally, the battery roll core can not be monitored and managed in real time, and if the protection plate is used under the condition, a user can have great potential safety hazards.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide kinds and when the battery rolls up the core and takes place the inflation, can in time cut off utmost point ear, prevent that the battery from rolling up the core and still external output voltage's the button type battery that has the route and cut off protect function under the expansion state.
The purpose of the utility model is realized through the following technical scheme:
A button type battery with a path cut-off protection function, comprising:
the packaging assembly comprises a battery case, a sealing rubber ring and a battery steel shell, wherein the sealing rubber ring is sleeved in the battery case, the battery steel shell is clamped in the sealing rubber ring, the battery steel shell is used for supporting the sealing rubber ring so that the sealing rubber ring is tightly attached to the inner side wall of the battery case, and the battery case and the battery steel shell jointly form a battery cavity; and
the battery rolls up the core, the battery rolls up the core including rolling up core, utmost point ear and cutting piece, roll up the core set up in the battery cavity, utmost point ear set up in roll up on the core, be provided with the portion of bending on the utmost point ear, the cutting piece set up in roll up the core with between the utmost point ear, just the cutting piece with utmost point ear closely laminates, the cutting piece top is held during the utmost point ear, so that the portion of bending deformation fracture.
In embodiments, the tabs specifically include an upper tab and a lower tab, the cutting sheet specifically includes an upper cutting sheet and a lower cutting sheet, the upper tab is disposed adjacent to the battery steel shell on the winding core, the upper tab is provided with an upper bending portion, the upper cutting sheet is disposed between the upper tab and the winding core, the upper cutting sheet is tightly attached to the upper tab, when the upper tab is supported by the upper cutting sheet, the upper bending portion is deformed and broken, the lower tab is disposed adjacent to the battery shell on the winding core, the lower tab is provided with a lower bending portion, the lower cutting sheet is disposed between the lower tab and the winding core, the lower cutting sheet is tightly attached to the lower tab, and when the lower tab is supported by the lower cutting sheet, the lower bending portion is deformed and broken.
In embodiments, the button cell further comprises a centering column, wherein a through hole is formed in the winding core, the centering column is located in the through hole, the end of the centering column is abutted against the upper cutting sheet, and the other end of the centering column is abutted against the lower cutting sheet.
In of these embodiments, the through-hole is located at a central position of the winding core.
In of the embodiments, the centering post comprises a front post, a center post and a rear post connected in sequence, the front post is abutted with the upper cutting sheet, and the rear post is abutted with the lower cutting sheet.
In of these embodiments, an upper spacer is disposed between the front stem and the upper cutting blade and a lower spacer is disposed between the rear stem and the lower cutting blade.
In of these embodiments, the anterior stem, the central stem, and the posterior stem are -body shaped structures.
In embodiments, part of the outer side wall of the battery case is recessed towards the battery cavity to form a limiting boss, and the limiting boss is tightly attached to the sealing rubber ring.
In embodiments, the battery steel case comprises a sealing cover and a locking ring edge which are sequentially connected, the sealing rubber ring comprises a side wall sealing ring and a bending sealing ring which are sequentially connected, the locking ring edge is accommodated in the bending sealing ring, the locking ring edge respectively supports the side wall sealing ring and the bending sealing ring so that the side wall sealing ring is tightly attached to the inner side wall of the battery case, and the bending sealing ring is tightly attached to the limiting boss.
In of these embodiments, the bent sealing ring is "U" shaped.
The utility model discloses compare in prior art's advantage and beneficial effect as follows:
the utility model discloses a button type battery with passageway cuts off protect function rolls up the core through setting up encapsulation subassembly and battery. In the actual application process, the battery shell and the battery steel shell both play a role in packaging protection; the sealing rubber ring plays a role in sealing and waterproofing; when the battery rolls up the core and takes place the inflation because of the accident when, the cutting piece can push up under the battery rolls up the core inflation condition and holds utmost point ear, because utmost point ear is formed by the flexible material preparation, and the rigidity of the portion of bending is weak, under the condition that utmost point ear was held on the cutting piece top, the portion of bending can the deformation fracture, promptly utmost point ear break off with roll up being connected between the core, the voltage of rolling up the core output just can't be exported to outside power supply unit through cracked utmost point ear, roll up the core and still export voltage outward under the inflation state has been prevented effectively, arouse corresponding incident.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an internal structure view of a button-type battery having a path cutoff protection function according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an embodiment of the present invention with a tab in an unbroken state;
fig. 3 is a schematic structural view of an embodiment of the present invention with a tab in a broken state;
fig. 4 is a schematic diagram illustrating the use of a button-type battery with a via cutting protection function according to an embodiment of the present invention in conjunction with electric welding with a two-pin welding head;
FIG. 5 is a schematic view of a center layer and an edge layer configuration of an embodiment of the present invention;
FIG. 6 is a schematic view of another embodiment of the present invention showing a center layer and an edge layer configuration;
fig. 7 is a schematic view of a center layer and an edge layer according to another embodiment of the present invention at .
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is noted that when an element is referred to as being "secured to" another elements, it can be directly on the other elements or intervening elements may also be present, that when elements are referred to as being "connected" to another elements, it can be directly connected to another elements or intervening elements may be present.
The terminology used herein in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, the terminology used herein "and/or" includes any and all combinations of or more of the associated listed items.
Referring to fig. 1, a button-type battery 10 with a channel-breaking protection function includes a package assembly 100 and a battery roll core 200.
As such, it should be noted that the packaging assembly 100 functions to package and protect the battery core 200.
Referring to fig. 1 again, the package assembly 100 includes a battery case 110, a sealing rubber ring 120 and a battery steel case 130, the sealing rubber ring 120 is sleeved in the battery case 110, the battery steel case 130 is clamped in the sealing rubber ring 120, the battery steel case 130 is used for supporting the sealing rubber ring 120, so that the sealing rubber ring 120 is tightly attached to the inner side wall of the battery case 110, and the battery case 110 and the battery steel case 130 together form a battery cavity.
Therefore, it should be noted that the battery case 110 and the battery steel case 130 both play a role in packaging and protecting the battery roll core 200, the battery case 110 and the battery steel case 130 jointly enclose a battery cavity, and the battery roll core 200 is placed in the battery cavity; the sealing rubber ring 120 plays a role of sealing and waterproofing, and improves the waterproofing performance of the button-type battery 10 having the passage cut-off protection function.
Please referring to fig. 1, 2 and 3, the battery roll core 200 includes a roll core 210, a tab 220 and a cutting sheet 230, the roll core 210 is disposed in the cavity of the battery, the tab 220 is disposed on the roll core 210, a bending portion 240 is disposed on the tab 220, the cutting sheet 230 is disposed between the roll core 210 and the tab 220, and the cutting sheet 230 is tightly attached to the tab 220, when the cutting sheet 230 supports the tab 220, the bending portion 240 is deformed and broken.
Therefore, in order to solve the technical problem of , a cutting blade 230 is disposed between a tab 220 and a winding core 210, when the winding core 210 expands, the cutting blade 230 will support the tab 220 along with the expansion of the winding core 210, when the winding core 210 expands to certain volume, the supporting force of the cutting blade 230 on the tab 220 can cause the bending portion 240 on the tab 220 to deform and break, because most of the tabs 220 are made of flexible materials, the rigidity of the tab 220 is relatively weak, when the supporting force of the cutting blade 230 on the tab 220 reaches a critical value of , the bending portion 240 will deform under the condition, that is, the deformation of the bending portion 240 breaks, the tab 220 can be separated from the winding core 210, the tab 220 is connected with the winding core 210, it can be understood that when the tab 220 is no longer connected with the winding core 210, the external voltage of the winding core 210 can not be output through the cutting blade 220, and the external cutting blade 220 can not output the external cutting blade 220, that the tab 220 can not break through the cutting blade 220, and the external cutting blade 220, and the cutting blade 220 can not output electricity.
, referring to fig. 1 again, in the embodiment , the tab 220 includes an upper tab 221 and a lower tab 222, the cutting blade 230 includes an upper cutting blade 231 and a lower cutting blade 232, the upper tab 221 is disposed on the winding core 210 adjacent to the battery steel case 130, the upper tab 221 is provided with an upper bending portion 241, the upper cutting blade 231 is disposed between the upper tab 221 and the winding core 210, the upper cutting blade 231 is tightly attached to the upper tab 221, the upper bending portion 241 is deformed and broken when the upper cutting blade 231 supports the upper tab 221, the lower tab 222 is disposed on the winding core 210 adjacent to the battery case 110, the lower tab 222 is provided with a lower bending portion 242, the lower cutting blade 232 is disposed between the lower tab 222 and the winding core 210, and the lower cutting blade 232 is tightly attached to the lower tab 222, and the lower cutting blade 232 supports the lower tab 222, so that the lower bending portion 242 is deformed and broken.
Thus, it should be noted that, specifically, the tab 220 specifically includes an upper tab 221 and a lower tab 222, and the cutting piece 230 specifically includes an upper cutting piece 231 and a lower cutting piece 232. The upper tab 221 corresponds to the positive electrode or the negative electrode of the winding core 210, the lower tab 222 corresponds to the positive electrode or the negative electrode of the winding core 210, and when the upper tab 221 is used as the positive electrode of the winding core 210, the lower tab 222 is used as the negative electrode of the winding core 210; when the upper tab 221 serves as the negative electrode of the winding core 210, the lower tab 222 serves as the positive electrode of the winding core 210.
It should be noted that the effects and principles of the upper cutting blade 231 and the lower cutting blade 232 are not described in detail, and please refer to the above effects and principles of the cutting blade 230.
referring again to fig. 1, in the embodiment, the button cell 10 with channel-breaking protection further includes a centering post 300, a through hole is formed in the winding core 210, the centering post 300 is located in the through hole, and the end of the centering post 300 abuts against the upper cutting blade 231 and the other end of the centering post 300 abuts against the lower cutting blade 232.
So, it should be noted that, the centering post 300 plays the effect of supporting and protecting the roll core 210, and simultaneously, the centering post 300 can also be spacing battery steel casing 130, prevent in the assembling process, press down that battery steel casing 130 is too big and press the roll core 210, and simultaneously, because set up the through-hole in the roll core 210, if roll core 210 is when taking place the inflation, roll core 210 inside can expand and enlarge towards the direction of through-hole, set up centering post 300 in the through-hole, the production of this phenomenon of prevention that just can be fine, prevent roll core 210 because of expanding and damaging towards the through-hole direction, can delay the expansion rate of roll core 210 in degree.
Specifically, referring again to FIG. 1, in the embodiment, the through-hole is located at a central location of the jellyroll 210.
So, it should be noted that the through-hole is located the middle part position of rolling up core 210 for centering post 300 and the even atress of rolling up core 210 can prolong the life of centering post 300 and rolling up core 210 to the certain extent at .
referring again to FIG. 1, in embodiment, the centering post 300 includes a front post 310, a center post 320, and a rear post 330 connected in series, the front post 310 supporting the upper blade 231 and the rear post 330 supporting the lower blade 232.
Thus, it should be noted that the centering post 300 includes a front post 310, a center post 320 and a rear post 330 connected in sequence, the front post 310 is used for supporting the upper cutting blade 231, the rear post 330 is used for supporting the lower cutting blade 232, the center post 320 is used for connecting the front post 310 and the rear post 330, and , in the embodiment, an upper spacer is disposed between the front post 310 and the upper cutting blade 231, and a lower spacer is disposed between the rear post 330 and the lower cutting blade 232.
In this way, it should be noted that an upper spacer is disposed between the front stem 310 and the upper cutting piece 231, a lower spacer is disposed between the rear stem 330 and the lower cutting piece 232, and the upper spacer and the lower spacer can prevent the upper tab 221 and the lower tab 222 from being connected to cause a short circuit.
referring again to fig. 1, in the embodiment, front stem 310, center stem 320, and rear stem 330 are -piece structures.
In this way, it should be noted that the -body molding structure of the front stem 310, the center stem 320, and the rear stem 330 can enhance the overall mechanical strength of the centering column 300 and prolong the service life of the centering column 300.
referring to fig. 1 again, in the embodiment , a portion of the outer sidewall of the battery case 110 is recessed toward the battery cavity to form a limiting protrusion 111, and the limiting protrusion 111 is tightly attached to the sealing rubber ring 120.
Thus, it should be noted that, a part of the outer side wall of the battery case 110 is recessed towards the battery cavity to form a limiting boss 111, and the limiting boss 111 locks the battery steel case 130, when the battery steel case 130 is pressed into the battery case 110, the inward recessed limiting boss 111 has inward locking forces to the battery steel case 130 through the sealing rubber ring, and the locking forces are applied to the battery steel case 130 through the sealing rubber ring 120 to stably limit the battery steel case 130 in the battery case 110.
referring to fig. 1 again, in the embodiment , the battery steel case 130 includes a cover 131 and a locking ring 132 connected in sequence, the sealing rubber ring 120 includes a side wall sealing ring 121 and a bending sealing ring 122 connected in sequence, the locking ring 132 is accommodated in the bending sealing ring 122, the locking ring respectively supports the side wall sealing ring 121 and the bending sealing ring 122, so that the side wall sealing ring 121 is tightly attached to the inner side wall of the battery case 110, and the bending sealing ring 122 is tightly attached to the limiting boss 111.
Thus, it should be noted that the cover 131 plays a role of isolation protection, and prevents the battery roll core 200 from contacting with an external object, thereby damaging the battery roll core 200; the locking ring edge 132 is accommodated in the bent sealing ring 122, and the locking ring edge 132 respectively supports the side wall sealing ring 121 and the bent sealing ring 122, so that the side wall sealing ring 121 is tightly attached to the inner side wall of the battery case 110, and the locking ring edge 132, the battery case 110 and the side wall sealing ring 121 are mutually matched to complete assembly.
referring again to FIG. 1, in the bent sealing ring 122 is "U" shaped.
Therefore, it should be noted that the bending sealing ring 122 is U-shaped, which can improve the sealing and waterproof performance of the bending sealing ring 122 to the greatest extent, if liquid conductive media such as water drops enter the U-shaped bending sealing ring 122 and cannot enter the battery cavity, the liquid conductive media such as water drops are accumulated in the bending sealing ring 122, and when the working temperature of the battery cavity rises, the liquid conductive media such as water drops can be properly evaporated under the thermal condition, so as to take away the liquid conductive media such as water drops.
The existing tab welding mode mostly adopts the laser welding effect, a laser is aligned to the center position of a battery cover or a battery case, the tab and the battery cover or the battery case are welded at at the instant of emitting laser , although the tab can be quickly and efficiently welded by adopting the laser welding mode, defects still exist, , the laser welding mode adopts a single-point welding mode, the tab position of a battery roll core needs to be positioned before formal laser welding, if the tab position is not accurately positioned, the tab can generate the phenomenon of 'explosion welding', namely the tab does not really complete welding with the battery cover or the battery case, and the connection stability is poor, and secondly, the laser welding mode is from outside to inside, if the tab is not accurately positioned when being welded, the laser easily breaks down the battery cover or the battery case at the instant of emitting laser , the laser is directly emitted into the battery roll core, and considerable potential safety hazard exists.
Therefore, in view of the above problem, referring to fig. 1 again, the present application discloses a method for manufacturing button-type batteries 10 with a channel-breaking protection function, comprising the following steps:
step S01, providing a packaging assembly 100 and a battery roll core 200 for manufacturing the button-type battery 10 with the channel-cut protection function, wherein the packaging assembly 100 comprises a battery shell 110, a sealing rubber ring 120 and a battery steel shell 130.
As such, it should be noted that the packaging assembly 100 functions to package and protect the battery roll core 200; the battery roll core 200 functions to supply voltage, outputting the voltage to an external power consumption device.
Step S02, the sealing rubber ring 120 is sleeved in the battery case 110, the battery roll core 200 is placed in the battery case 110, the battery steel shell 130 is sleeved in the sealing rubber ring 120, the battery steel shell 130 supports the sealing rubber ring 120, so that the sealing rubber ring 120 is in close contact with the inner side wall of the battery case 110, at this time, the battery case 110 and the battery steel shell 130 jointly enclose a battery cavity, and the battery roll core 200 is located in the battery cavity.
Therefore, it should be noted that, when the button-type battery 10 with the channel cut-off protection function is assembled, the sealing rubber ring 120 is sleeved in the battery case 110, the battery roll core 200 is placed in the battery case 110, and the battery steel case 130 is sleeved in the sealing rubber ring 120, under such a condition, the battery steel case 130 will support the sealing rubber ring 120, and the sealing rubber ring 120 will be in tight contact with the inner side wall of the battery case 110 under the action of the supporting force of the battery steel case 130, that is, the sealing rubber ring 120 is respectively in tight fit with the battery case 110 and the battery steel case 130, so as to greatly improve the sealing and waterproof performance of the sealing rubber ring 120, and meanwhile, the sealing rubber ring 120 can provide a proper friction force for the battery steel case 130, so as to prevent the battery steel case 130 from being separated from the battery case 110 under the external force of , and to cause the leakage of the electrolyte of the battery roll core 200.
Step S03, positioning the tab 220 of the battery winding core 200, and performing electric welding operation on the battery shell 110 and/or the battery steel shell 130 by using the double-needle welding head 20;
the central welding layer 140 is formed by welding the contact part of the tab 220 of the battery core 200 at the central position with the battery shell 110 and/or the battery steel shell 130, and the edge welding layer 150 is formed by welding the contact part of the tab 220 of the battery core 200 at the edge position with the battery shell 110 and/or the battery steel shell 130.
Therefore, it should be noted that, in the above-mentioned conventional tab welding methods, most of the conventional tab welding methods adopt a laser welding method, after the tab position of the battery roll core is confirmed, a laser is aligned to the center position of the battery cover or the battery case, and the tab and the battery cover or the battery case are welded at by the laser at instant of emitting laser light, but the above-mentioned methods have the defect of determination, that is, , the tab position of the battery roll core needs to be located, if the tab position is inaccurately located, the tab may have a "burst welding" phenomenon, that is, the tab is not truly welded with the battery cover or the battery case, and the connection stability is poor, and secondly, if the tab is inaccurately located, the laser light is easy to directly puncture the battery cover or the battery case at instant of emitting laser light, and the laser light is directly emitted into the battery roll core, so there is a considerable potential safety hazard.
The welding process includes that after the packaging assembly 100 and the battery roll core 200 are assembled, the position of the tab 220 of the battery roll core 200 is positioned, the battery case 110 and/or the battery steel case 130 are subjected to electric welding operation by the double-needle welding head 20, referring to fig. 4, the double-needle welding head 20 includes a positive welding head 21 and a negative welding head 22, after the position of the tab 220 of the battery roll core 200 is positioned, the positive welding head 21 is aligned with the tab at the center of the battery case 110 and/or the battery steel case 130, the negative welding head 22 is aligned with the tab at the edge of the battery case 110 and/or the battery steel case 130, the tab at the edge of the battery case 130 is welded to the tab at the center of the battery case 110 and/or the battery steel case 130, the positive welding head 21 and the negative welding head 22 can be mutually exchanged in combination with actual assembly conditions, that the negative welding head 22 is aligned with the center of the battery case 110 and/or the tab at the center of the battery case 130, the positive welding head 21 is aligned with the tab at the edge of the battery case 110 and/or the battery case 130, when the battery case 130 is welded to the battery case 130, the battery case 130 is welded to be welded to the battery case 130, the battery case 130 is welded to be.
, please refer to and refer to fig. 4, 5, 6, and 7, because a double-pin welding head 20 is needed to be used when welding the tab 220 of the battery cell core 200, and correspondingly, when welding the tab 220, the shape formed by welding the center welding layer 140 and the edge welding layer 150 is influenced by the double-pin welding head 20 to a certain extent in , for example, when the center welding layer 140 is in a circular shape, the corresponding positive welding head 21 or negative welding head 22 in the double-pin welding head 20 corresponding to the center welding layer 140 is also in a circular shape, for example, when the edge welding layer 150 includes a plurality of fan-shaped welding sheets 151, each welding layer 151 is in a radial shape, and the welding head 21 or the corresponding to the center welding head 20 is in a radial shape, and the battery cover is flexibly distributed.
The utility model discloses a button type battery with passageway cuts off protect function rolls up the core through setting up encapsulation subassembly and battery. In the actual application process, the battery shell and the battery steel shell both play a role in packaging protection; the sealing rubber ring plays a role in sealing and waterproofing; when the battery rolls up the core and takes place the inflation because of the accident when, the cutting piece can push up under the battery rolls up the core inflation condition and holds utmost point ear, because utmost point ear is formed by the flexible material preparation, and the rigidity of the portion of bending is weak, under the condition that utmost point ear was held on the cutting piece top, the portion of bending can the deformation fracture, promptly utmost point ear break off with roll up being connected between the core, the voltage of rolling up the core output just can't be exported to outside power supply unit through cracked utmost point ear, roll up the core and still export voltage outward under the inflation state has been prevented effectively, arouse corresponding incident.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
- A button-type battery having a path cutoff protection function of , comprising:the packaging assembly comprises a battery case, a sealing rubber ring and a battery steel shell, wherein the sealing rubber ring is sleeved in the battery case, the battery steel shell is clamped in the sealing rubber ring, the battery steel shell is used for supporting the sealing rubber ring so that the sealing rubber ring is tightly attached to the inner side wall of the battery case, and the battery case and the battery steel shell jointly form a battery cavity; andthe battery rolls up the core, the battery rolls up the core including rolling up core, utmost point ear and cutting piece, roll up the core set up in the battery cavity, utmost point ear set up in roll up on the core, be provided with the portion of bending on the utmost point ear, the cutting piece set up in roll up the core with between the utmost point ear, just the cutting piece with utmost point ear closely laminates, the cutting piece top is held during the utmost point ear, so that the portion of bending deformation fracture.
- 2. The button-type battery according to claim 1, wherein the tab comprises an upper tab and a lower tab, the cutting blade comprises an upper cutting blade and a lower cutting blade, the upper tab is disposed on the winding core adjacent to the battery steel case, the upper tab is provided with an upper bending portion, the upper cutting blade is disposed between the upper tab and the winding core, the upper cutting blade is tightly attached to the upper tab, the upper cutting blade is pressed against the upper tab to deform and break the upper bending portion, the lower tab is disposed on the winding core adjacent to the battery case, the lower cutting blade is disposed between the lower tab and the winding core and is tightly attached to the lower tab, and the lower cutting blade is pressed against the lower tab, so that the lower bending part is deformed and broken.
- 3. The button cell with via breaking protection of claim 2, further comprising a centering post, wherein a through hole is formed in the winding core, the centering post is located in the through hole, an end of the centering post abuts against the upper cutting sheet, and another end of the centering post abuts against the lower cutting sheet.
- 4. The button-type battery having a via-cutting protection function according to claim 3, wherein the through-hole is located at a central position of the winding core.
- 5. The button-type battery having a via-breaking protection function according to claim 3, wherein the centering post comprises a front post, a center post and a rear post which are connected in sequence, the front post is abutted against the upper cutting piece, and the rear post is abutted against the lower cutting piece.
- 6. The button-type battery having a via-breaking protection function according to claim 5, wherein an upper spacer is provided between the front stem and the upper cutting piece, and a lower spacer is provided between the rear stem and the lower cutting piece.
- 7. The button-type battery with passage cut-off protection according to claim 5, wherein said front stem, said center stem and said rear stem are body-molded structures.
- 8. The button-type battery with passage cut-off protection function according to claim 1, wherein a part of the outer side wall of the battery case is recessed toward the battery cavity to form a limit boss, and the limit boss is tightly attached to the sealing rubber ring.
- 9. The button-type battery with the channel cut-off protection function according to claim 8, wherein the battery steel shell comprises a sealing cover and a locking ring edge which are sequentially connected, the sealing rubber ring comprises a side wall sealing ring and a bending sealing ring which are sequentially connected, the locking ring edge is accommodated in the bending sealing ring, the locking ring edge respectively supports against the side wall sealing ring and the bending sealing ring, so that the side wall sealing ring is tightly attached to the inner side wall of the battery shell, and the bending sealing ring is tightly attached to the limiting boss.
- 10. The button-type battery having a via-breaking protection function according to claim 9, wherein the bent sealing ring has a "U" shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920697524.9U CN210006815U (en) | 2019-05-15 | 2019-05-15 | Button type battery with path cut-off protection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920697524.9U CN210006815U (en) | 2019-05-15 | 2019-05-15 | Button type battery with path cut-off protection function |
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| CN210006815U true CN210006815U (en) | 2020-01-31 |
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| CN201920697524.9U Active CN210006815U (en) | 2019-05-15 | 2019-05-15 | Button type battery with path cut-off protection function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190238A (en) * | 2019-05-15 | 2019-08-30 | 广东微电新能源有限公司 | Button-type battery with access tripping protection function |
| CN111341984A (en) * | 2020-03-06 | 2020-06-26 | 刘亚明 | High-energy-density button lithium ion battery |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190238A (en) * | 2019-05-15 | 2019-08-30 | 广东微电新能源有限公司 | Button-type battery with access tripping protection function |
| CN111341984A (en) * | 2020-03-06 | 2020-06-26 | 刘亚明 | High-energy-density button lithium ion battery |
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