CN210156436U - Battery structure with tab free of welding - Google Patents

Battery structure with tab free of welding Download PDF

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Publication number
CN210156436U
CN210156436U CN201920697242.9U CN201920697242U CN210156436U CN 210156436 U CN210156436 U CN 210156436U CN 201920697242 U CN201920697242 U CN 201920697242U CN 210156436 U CN210156436 U CN 210156436U
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China
Prior art keywords
battery
clamping elastic
tab
elastic part
welding
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CN201920697242.9U
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Chinese (zh)
Inventor
童焰
陈志勇
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Guangdong Mic Power New Energy Co Ltd
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Guangdong Mic Power New Energy Co Ltd
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Priority to CN201920697242.9U priority Critical patent/CN210156436U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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Abstract

The utility model discloses a welded battery structure is exempted from to utmost point ear, through setting up encapsulation subassembly, battery roll core and center post. In the practical application process, the battery roll core is placed in the inner cavity of the battery, and when the battery cover is clamped in the sealing rubber ring, the sealing rubber ring can be propped against the inner wall of the battery case, so that the battery cover is fixed on the battery case; in addition, be provided with centre gripping elasticity portion on battery case and/or the battery lid, centre gripping elasticity portion and utmost point ear top when holding, be used for making utmost point ear by the top hold to the tip position department of center post, and then make utmost point ear by the centre gripping between the tip of centre gripping elasticity portion and center post, utmost point ear need not can accomplish with battery lid and battery case welding promptly and is connected, when the interior pressure of battery inner chamber is too big, interior pressure can let centre gripping elasticity portion produce deformation, under the effect of interior pressure, utmost point ear no longer by the centre gripping between the tip of centre gripping elasticity portion and center post, the protection of opening a circuit has been realized promptly, prevent that interior pressure when too big battery roll up the core still outwards carry voltage, cause corresponding incident.

Description

Battery structure with tab free of welding
Technical Field
The utility model relates to a battery structure technical field especially relates to a welded battery structure is exempted from to utmost point ear.
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.
The battery structure comprises a battery cover, a battery shell and a battery roll core, wherein the battery cover is arranged on the battery shell, the battery cover and the battery shell jointly enclose a battery inner cavity, the battery roll core is arranged in the battery inner cavity, and the pole lugs of the battery roll core are welded with the battery cover and the battery shell respectively. The welding of the pole ear is to ensure that the pole ear can be stably connected with the battery cover and the battery shell, and to ensure the stable output of the battery roll core. The mode of welding the lugs has certain defects, firstly, the mode of welding the lugs can improve the production and manufacturing difficulty of a battery structure, equipment with very high operation precision can be welded to the lugs, and the operation cost of an enterprise can be increased undoubtedly; secondly, when the internal pressure of the battery cavity is overlarge, the welded lug can not be separated from the battery cover and the battery shell in the mode of welding the lug, namely, the battery roll core still externally transmits voltage when the internal pressure of the battery structure is overlarge, so that a considerable potential safety hazard exists, explosion of the battery structure or eruption of battery electrolyte can be caused in serious conditions, and the life safety of a user is seriously threatened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, providing a welded is exempted from to utmost point ear, when pressing too big in the battery, utmost point ear can in time with battery cover and/or battery case separation, and then accomplish the utmost point ear of the protection of opening circuit and exempt from welded battery structure.
The purpose of the utility model is realized through the following technical scheme:
a tab welding-free battery structure comprising:
the battery cover is clamped in the sealing rubber ring so that the sealing rubber ring is propped against the inner wall of the battery case, the battery case and the battery cover jointly enclose a battery inner cavity, and the battery case and/or the battery cover are/is provided with clamping elastic parts;
the battery roll core is arranged in the battery inner cavity, a position avoiding hole is formed in the battery roll core, and a lug is arranged on the battery roll core; and
the central column is located in the avoiding hole, and when the clamping elastic part is supported by the lug, the clamping elastic part is used for supporting the lug to the end position of the central column, so that the lug is clamped between the clamping elastic part and the end of the central column.
In one embodiment, the clamping elastic portion is located on the battery cover, and when the clamping elastic portion is abutted against the tab, the clamping elastic portion is used for enabling the tab to be abutted against the end position of the central column, so that the tab is clamped between the clamping elastic portion and the end of the central column.
In one embodiment, the clamping elastic part specifically comprises an upper clamping elastic part and a lower clamping elastic part, the upper clamping elastic part is located on the battery cover, the lower clamping elastic part is located on the battery case, the tabs specifically comprise upper tabs and lower tabs, and the central column comprises a front end column, a middle end column and a rear end column which are connected in sequence;
when the upper clamping elastic part is propped against the upper tab, the upper clamping elastic part is used for enabling the upper tab to be propped against the front end column, and further enabling the upper tab to be clamped between the upper clamping elastic part and the front end column;
and when the lower clamping elastic part is supported by the lower lug, the lower lug is supported to the rear end column, and then the lower lug is clamped between the lower clamping elastic part and the rear end column.
In one embodiment, the upper clamping spring is recessed downward toward the battery cavity.
In one embodiment, the lower clamping elastic part protrudes upwards towards the direction of the battery inner cavity.
In one embodiment, an upper insulator is disposed between the front end post and the upper tab.
In one embodiment, a lower insulator is disposed between the rear end post and the lower tab.
In one embodiment, the position avoiding hole is located at the middle position of the battery winding core.
In one embodiment, the battery case comprises a packaging shell and a bent sealing edge which are sequentially connected, the packaging shell and the battery cover jointly enclose a battery inner cavity, and the battery cover is clamped in the sealing rubber ring, so that the sealing rubber ring is respectively abutted against the inner wall of the packaging shell and the inner wall of the bent sealing edge.
In one embodiment, the package housing and the bent sealing edge are integrally formed.
The utility model discloses compare in prior art's advantage and beneficial effect as follows:
the utility model discloses a welded battery structure is exempted from to utmost point ear, through setting up encapsulation subassembly, battery roll core and center post. In the practical application process, the battery roll core is placed in the inner cavity of the battery, and when the battery cover is clamped in the sealing rubber ring, the sealing rubber ring can be propped against the inner wall of the battery case, so that the battery cover is fixed on the battery case; in addition, be provided with centre gripping elasticity portion on battery case and/or the battery lid, centre gripping elasticity portion and utmost point ear top when holding, be used for making utmost point ear by the top hold to the tip position department of center post, and then make utmost point ear by the centre gripping between the tip of centre gripping elasticity portion and center post, utmost point ear need not can accomplish with battery lid and battery case welding promptly and is connected, when the interior pressure of battery inner chamber is too big, interior pressure can let centre gripping elasticity portion produce deformation, under the effect of interior pressure, utmost point ear no longer by the centre gripping between the tip of centre gripping elasticity portion and center post, the protection of opening a circuit has been realized promptly, prevent that interior pressure when too big battery roll up the core still outwards carry voltage, cause 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 a schematic structural diagram of a battery structure with no welding of tabs according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a battery structure with no welding of tabs according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
fig. 4 is an enlarged schematic view at B of fig. 2.
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 will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, a tab welding-free battery structure 10 includes a package assembly 100, a battery roll core 200, and a central post 300.
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 plays a role in providing voltage for external electric equipment; the central column 300 plays the role of the tab of the battery roll core 200 and preventing the battery roll core 200 from excessively expanding, and protects the battery roll core 200.
Referring to fig. 2 again, the package assembly 100 includes a battery cover 110, a sealing rubber ring 120 and a battery case 130, the battery cover 110 is clamped in the sealing rubber ring 120 to support the sealing rubber ring 120 against the inner wall of the battery case 130, the battery case 130 and the battery cover 110 together enclose a battery cavity, and a clamping elastic part 140 is disposed on the battery case 130 and/or the battery cover 110.
Therefore, it should be noted that both the battery cover 110 and the battery case 130 play a role in packaging and protecting the battery roll core 200, and meanwhile, the battery cover 110 and the battery case 130 jointly enclose a battery inner cavity, and the battery inner cavity is used for placing the battery roll core 200; the sealing rubber ring 130 plays a role of sealing and water proofing, and prevents external water drops from entering the inner cavity of the battery to cause short circuit of the battery winding core 200; the clamping elastic part 140 is used in cooperation with the central column 300 to complete the welding-free connection of the tabs of the battery roll core 200 with the battery cover 110 and the battery shell 130.
Referring to fig. 2 again, the battery roll core 200 is disposed in the battery cavity, the battery roll core 200 is provided with a position-avoiding hole 210, and the battery roll core 200 is provided with a tab 220.
Thus, it should be noted that the battery roll core 200 plays a role of providing voltage for external electric equipment; the arrangement of the avoiding hole 210 can make the structure of the battery structure 10 with the electrode lugs free of welding more compact.
Referring to fig. 2 again, the central post 300 is located in the avoiding hole 210, and when the clamping elastic portion 140 is pressed against the tab 220, the clamping elastic portion is used to press the tab 220 to the end position of the central post 300, so that the tab 220 is clamped between the clamping elastic portion 140 and the end of the central post 300.
Therefore, it should be noted that, the clamping elastic part 140 is disposed on the battery case 130 and/or the battery cover 110, when the clamping elastic part 140 is supported against the tab 220, the tab 220 is supported against the end position of the central column 300, and then the tab 220 is clamped between the clamping elastic part 140 and the end of the central column 300, that is, the tab 220 can be connected without being welded to the battery cover 110 and the battery case 130, when the internal pressure of the battery cavity is too large, the internal pressure can deform the clamping elastic part 140, and under the action of the internal pressure, the tab 220 is no longer clamped between the clamping elastic part 140 and the end of the central column 300, thereby achieving open circuit protection, and preventing the battery roll core from further transmitting voltage to the outside when the internal pressure is too large, and causing corresponding safety accidents.
It should be further noted that, because the tab 220 does not need to be welded to the battery cover 110 and the battery case 130, when the internal pressure of the battery cavity is too large, under the action of the internal pressure, at least a portion of the battery cover 110 may be separated from the sealing rubber ring 120, that is, when the internal pressure of the battery cavity is too large, a certain gap exists between the battery cover 110 and the sealing rubber ring 120 or the battery cover 110 completely separates from the sealing rubber ring 120, the tab welding-free battery structure 10 completes the autonomous pressure relief operation, compared with the conventional battery structure that needs to provide an explosion-proof plate to complete the pressure relief operation, the tab welding-free battery structure 10 of the present application has a relatively low manufacturing cost, and is more compact in structure, and has the autonomous pressure relief function without providing an explosion-proof plate.
It should be noted that, when the battery cover 110 is assembled to the central column 300, the central column 300 can also prevent the battery cover 110 from being excessively displaced to press the battery roll core 200, that is, when the clamping elastic portion 140 supports the tab 220 to the end position of the central column 300, so that the tab 220 is clamped between the clamping elastic portion 140 and the end of the central column 300, the battery cover 110 cannot be continuously pressed and displaced under the action of the central column 300, and the central column 300 effectively prevents the battery cover 110 from excessively pressing the battery roll core 200 due to excessive pressing force, so as to prevent the battery roll core 200 from having a certain protection effect on the battery roll core 200; simultaneously, because set up in the battery rolls core 200 and keep away a hole 210, owing to keep away seting up of a hole 210 for the atress of battery rolls core 200 can be inhomogeneous, when the battery rolls core 200 and takes place the inflation phenomenon because of unexpected factor, be located and keep away center post 300 in the hole 210 can be fine prevent that the battery rolls core 200 is at excessive inflation, thereby lead to the damage of battery rolls core 200.
Further, referring to fig. 2 again, in an embodiment, the clamping elastic part 140 is located on the battery cover 110, and when the clamping elastic part 140 is pressed against the tab 220, the clamping elastic part is used for pressing the tab 220 to the end position of the central column 300, so that the tab 220 is clamped between the clamping elastic part 140 and the end of the central column 300.
In this way, it should be noted that, in consideration of the difficulty of the manufacturing process, only the clamping elastic portion 140 may be disposed on the battery cover 110, and the working principle of the clamping elastic portion 140 is not repeated, please refer to the working principle of the clamping elastic portion 140. It should be emphasized that the clamping elastic part 140 has a certain deformation capability, when the battery cover 110 supports the clamping elastic part 140 to the end position of the central column 300, the central column 300 also supports the clamping elastic part 140 upwards through the tab 220 according to the principle of force interaction, the clamping elastic part 140 inevitably deforms to a certain extent, and when the clamping elastic part 140 deforms upwards, the diameter of the battery cover 110 increases by a certain amount, so that the interaction force between the battery cover 110 and the battery case 130 is stronger, that is, the battery cover 110 can be more stably mounted on the battery case 130, the interaction force between the battery cover 110 and the battery case 130 is optimized, and further, the sealing performance of the tab welding-free battery structure 10 is further improved.
Further, referring to fig. 2, fig. 3 and fig. 4 together, in one embodiment, the clamping elastic part 140 specifically includes an upper clamping elastic part 141 and a lower clamping elastic part 142, the upper clamping elastic part 141 is located on the battery cover 110, the lower clamping elastic part 142 is located on the battery case 130, the tab 220 specifically includes an upper tab 221 and a lower tab 222, and the central column 300 includes a front end column 310, a middle end column 320 and a rear end column 330 which are sequentially connected;
when the upper clamping elastic part 141 is pressed against the upper tab 221, the upper clamping elastic part is used for pressing the upper tab 221 against the front end column 310, so that the upper tab 221 is clamped between the upper clamping elastic part 141 and the front end column 310;
when the lower clamping elastic portion 142 is pressed against the lower tab 222, the lower tab 222 is pressed against the rear end post 330, and the lower tab 222 is clamped between the lower clamping elastic portion 142 and the rear end post 330.
In this way, it should be noted that, in order to enable the tab 220 of the battery roll core 200 to be clamped better and more stably, in an embodiment, the battery cover 110 and the battery case 130 are both provided with the clamping elastic part 140, the clamping elastic part 140 specifically includes an upper clamping elastic part 141 and a lower clamping elastic part 142, the upper clamping elastic part 141 is located on the battery cover 110, the lower clamping elastic part 142 is located on the battery case 130, and specific working principles of the upper clamping elastic part 141 and the lower clamping elastic part 142 are not repeated, please refer to the working principle of the clamping elastic part 140. The upper clamping elastic part 141 is arranged to clamp the upper tab 220 of the battery roll core 200 between the upper clamping elastic part 141 and the front end column 310, the lower clamping elastic part 142 is arranged to clamp the lower tab of the battery roll core 200 between the lower clamping elastic part 142 and the rear end column 330, and the tab 220 of the battery roll core 200 does not need to be welded with the battery cover 110 and the battery shell 130 respectively, so that the safety of the tab welding-free battery structure 10 is greatly improved.
It should be noted that, the clamping elastic part 140 may be disposed on the battery cover 110 alone, and the clamping elastic part 140 may also be disposed on the battery case 130 alone, and the function and effect of the clamping elastic part 140 are the same whether the clamping elastic part 140 is disposed on the battery cover 110 or the battery case 130, so that the tab 220 of the battery roll core 200 can be clamped between the clamping elastic part 140 and the end of the central column 300, thereby achieving welding-free, when the internal pressure of the battery cavity is too large, the clamping elastic part 140 may not clamp the tab 220 of the battery roll core 200 under the action of the internal pressure, that is, the open circuit protection under the condition of the internal pressure is too large is achieved.
Further, referring to fig. 3 again, in one embodiment, the upper clamping elastic portion 141 is recessed downward toward the battery cavity.
In this way, it should be noted that the upper clamping elastic part 141 is recessed downward toward the battery cavity, and this design is intended to allow the upper clamping elastic part 141 recessed downward toward the battery cavity to contact with the tab of the battery winding core 200 and further clamp the tab 220 of the battery winding core 200 when the battery cover 110 is assembled and the battery cover 110 is pressed downward. Of course, the orientation of the upper clamping elastic part 141 can be flexibly set according to actual conditions, for example, when the upper clamping elastic part 141 protrudes upward toward the battery cavity, the difference is that when the upper clamping elastic part 141 protrudes upward toward the battery cavity during assembly, the upper clamping elastic part 141 protruding upward needs to be pressed toward the battery cavity by external force, so that the upper clamping elastic part 141 deforms to contact the tab 220 of the battery winding core 200.
Further, referring to fig. 4 again, in one embodiment, the lower clamping elastic portion 142 protrudes upward toward the inner cavity of the battery.
It should be noted that, the lower clamping elastic portion 142 protrudes upward toward the battery cavity, and this design is intended to allow the rear end pillar 330 to support the lower tab 222 when the front end pillar 310 supports the upper tab 221 and the lower clamping elastic portion 142 supports the lower tab 222 when the battery cover 110 is assembled, and to allow the lower tab 222 to be clamped between the lower clamping elastic portion 142 and the rear end pillar 330 when the battery cover 110 is pressed downward by the lower clamping elastic portion 142. Of course, the orientation of the lower elastic clamping portion 142 can be flexibly set according to actual conditions, for example, the lower elastic clamping portion 142 is recessed downward toward the battery cavity, but the difference is that when the lower elastic clamping portion 142 is recessed downward toward the battery cavity during assembly, the downward recessed lower elastic clamping portion 142 needs to be pressed toward the battery cavity by external force, so that the lower elastic clamping portion 142 is deformed to contact the lower tab 222.
Further, in one embodiment, an upper insulator is disposed between the front end post 310 and the upper tab 221.
As described above, the upper insulator serves as an insulation barrier, and the front end post 310 is preferably made of a metal material in consideration of the entire mechanical strength of the front end post 310, but it is necessary to provide the upper insulator between the front end post 310 and the upper tab 221 to prevent the upper tab 221 and the lower tab 222 from being directly short-circuited.
Further, in one embodiment, a lower insulator is disposed between the rear end post 330 and the lower tab 222.
As described above, the lower insulator serves as an insulation and isolation, and the rear end post 330 is preferably made of a metal material in consideration of the entire mechanical strength of the rear end post 330, but it is necessary to provide the lower insulator between the rear end post 330 and the lower tab 222 to prevent the upper tab 221 and the lower tab 222 from being directly shorted together.
Further, referring to fig. 2 again, in one embodiment, the avoiding hole 210 is located at a middle position of the battery roll core 200.
Therefore, it should be noted that the avoiding hole 210 is located at the middle position of the battery roll core 200, so that the central column 300 located in the avoiding hole 210 and the battery roll core 200 are uniformly stressed, and the service lives of the central column 300 and the battery roll core 200 are prolonged.
Further, referring to fig. 2 again, in an embodiment, the battery case 130 includes a packaging case 131 and a bent sealing edge 132, which are sequentially connected, the packaging case 131 and the battery cover 110 together enclose a battery cavity, the battery cover 110 is clamped in the sealing rubber ring 120, so that the sealing rubber ring 120 abuts against an inner wall of the packaging case 131 and an inner wall of the bent sealing edge 132, respectively.
Thus, it should be noted that the package case 131 plays a role in protection, and protects the battery roll core 200; the banding 132 of bending plays spacing battery cover 110's effect, and the interact power between battery cover 110 and the battery case 130 can be optimized to banding 132 of bending, and simultaneously, the setting of banding 132 of bending can simplify utmost point ear and exempt from the assembly process of welded battery structure 10, and the user only need can accomplish the assembly operation by pressing battery cover 110, compares in traditional turn-up battery structure, and the assembly process of this application is simple relatively, has improved assembly efficiency greatly.
It should be noted that when the battery case 130 is provided with the clamping elastic part 140, the clamping elastic part 140 is located on the package case 131.
Further, referring to fig. 2 again, in one embodiment, the package housing 131 and the bent sealing edge 132 are integrally formed.
In this way, it should be noted that, the design that the package shell 131 and the bent sealing edge 132 are integrally formed can improve the overall mechanical strength of the battery case 130, prolong the service life of the battery case 130, and thus better protect the battery roll core 200.
The utility model discloses a welded battery structure is exempted from to utmost point ear, through setting up encapsulation subassembly, battery roll core and center post. In the practical application process, the battery roll core is placed in the inner cavity of the battery, and when the battery cover is clamped in the sealing rubber ring, the sealing rubber ring can be propped against the inner wall of the battery case, so that the battery cover is fixed on the battery case; in addition, be provided with centre gripping elasticity portion on battery case and/or the battery lid, centre gripping elasticity portion and utmost point ear top when holding, be used for making utmost point ear by the top hold to the tip position department of center post, and then make utmost point ear by the centre gripping between the tip of centre gripping elasticity portion and center post, utmost point ear need not can accomplish with battery lid and battery case welding promptly and is connected, when the interior pressure of battery inner chamber is too big, interior pressure can let centre gripping elasticity portion produce deformation, under the effect of interior pressure, utmost point ear no longer by the centre gripping between the tip of centre gripping elasticity portion and center post, the protection of opening a circuit has been realized promptly, prevent that interior pressure when too big battery roll up the core still outwards carry voltage, cause 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)

1. A battery structure with welding-free tabs is characterized by comprising:
the battery cover is clamped in the sealing rubber ring so that the sealing rubber ring is propped against the inner wall of the battery case, the battery case and the battery cover jointly enclose a battery inner cavity, and the battery case and/or the battery cover are/is provided with clamping elastic parts;
the battery roll core is arranged in the battery inner cavity, a position avoiding hole is formed in the battery roll core, and a lug is arranged on the battery roll core; and
the central column is located in the avoiding hole, and when the clamping elastic part is supported by the lug, the clamping elastic part is used for supporting the lug to the end position of the central column, so that the lug is clamped between the clamping elastic part and the end of the central column.
2. The tab welding-free battery structure as claimed in claim 1, wherein the clamping elastic portion is located on the battery cover, and when the clamping elastic portion is supported against the tab, the clamping elastic portion is used to support the tab to an end position of the central column, so that the tab is clamped between the clamping elastic portion and the end of the central column.
3. The tab welding-free battery structure as claimed in claim 1, wherein the clamping elastic part comprises an upper clamping elastic part and a lower clamping elastic part, the upper clamping elastic part is located on the battery cover, the lower clamping elastic part is located on the battery case, the tab comprises an upper tab and a lower tab, the central post comprises a front end post, a middle end post and a rear end post which are connected in sequence;
when the upper clamping elastic part is propped against the upper tab, the upper clamping elastic part is used for enabling the upper tab to be propped against the front end column, and further enabling the upper tab to be clamped between the upper clamping elastic part and the front end column;
and when the lower clamping elastic part is supported by the lower lug, the lower lug is supported to the rear end column, and then the lower lug is clamped between the lower clamping elastic part and the rear end column.
4. The tab welding-free battery structure as claimed in claim 3, wherein the upper clamping elastic part is recessed downward toward the battery cavity.
5. The tab welding-free battery structure as claimed in claim 3, wherein the lower clamping elastic part protrudes upward toward the battery cavity.
6. The tab welding-free battery structure as claimed in claim 3, wherein an upper insulator is disposed between the front end post and the upper tab.
7. The tab welding-free battery structure as claimed in claim 3, wherein a lower insulator is disposed between the rear end post and the lower tab.
8. The battery structure with the welding-free tabs as claimed in claim 1, wherein the avoiding hole is located in the middle of the battery winding core.
9. The battery structure with the welding-free tabs as claimed in claim 1, wherein the battery case comprises a packaging shell and a bent sealing edge which are sequentially connected, the packaging shell and the battery cover jointly enclose a battery cavity, and the battery cover is clamped in the sealing rubber ring, so that the sealing rubber ring is respectively abutted against the inner wall of the packaging shell and the inner wall of the bent sealing edge.
10. The tab welding-free battery structure as claimed in claim 9, wherein the package housing and the folded sealing edge are integrally formed.
CN201920697242.9U 2019-05-15 2019-05-15 Battery structure with tab free of welding Active CN210156436U (en)

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Application Number Priority Date Filing Date Title
CN201920697242.9U CN210156436U (en) 2019-05-15 2019-05-15 Battery structure with tab free of welding

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Application Number Priority Date Filing Date Title
CN201920697242.9U CN210156436U (en) 2019-05-15 2019-05-15 Battery structure with tab free of welding

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Publication Number Publication Date
CN210156436U true CN210156436U (en) 2020-03-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110335971A (en) * 2019-05-15 2019-10-15 广东微电新能源有限公司 The no-welding battery structure of tab
CN112736370A (en) * 2021-01-11 2021-04-30 郭亮 Non-welding double-end detachable tab for battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110335971A (en) * 2019-05-15 2019-10-15 广东微电新能源有限公司 The no-welding battery structure of tab
CN112736370A (en) * 2021-01-11 2021-04-30 郭亮 Non-welding double-end detachable tab for battery

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