CN110212147B - Lug type top cover structure - Google Patents
Lug type top cover structure Download PDFInfo
- Publication number
- CN110212147B CN110212147B CN201910465702.XA CN201910465702A CN110212147B CN 110212147 B CN110212147 B CN 110212147B CN 201910465702 A CN201910465702 A CN 201910465702A CN 110212147 B CN110212147 B CN 110212147B
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- Prior art keywords
- tab
- top cover
- battery
- inner end
- hole
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- 238000007789 sealing Methods 0.000 claims abstract description 37
- 239000003292 glue Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 238000005538 encapsulation Methods 0.000 claims abstract description 11
- 238000001746 injection moulding Methods 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000006223 plastic coating Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 7
- 239000000084 colloidal system Substances 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 238000010073 coating (rubber) Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to the technical field of top cover structures, and discloses a tab type top cover structure, which comprises a top cover sheet for sealing the inside of a battery and tab pieces penetrating through the top cover sheet, wherein each tab piece comprises a middle part, an extension part extending out of the battery and an inner end part arranged in the battery; two ends of the middle part are respectively connected and communicated with the extension part and the inner end part; the pole ear piece and the top cover piece are provided with glue injection gaps, the glue injection gaps are subjected to injection molding and encapsulation to form sealing layers, the top cover piece and the pole ear piece are respectively fixedly arranged with the sealing layers, and the sealing layers seal the glue injection gaps. The tab piece penetrates through the top cover plate, the external element is communicated with the extension part, and the extension part is matched with the middle part and the inner end part, so that the internal conduction between the external element and the battery is realized, and the charge and discharge of the battery are realized; meanwhile, under the action of the sealing layer, the sealing inside the battery is ensured, the leakage of the battery is effectively avoided, and the use safety of the battery is enhanced; the tab member is adopted, so that the welding procedure of battery assembly is reduced, the manufacturing cost is reduced, and the battery assembly is convenient.
Description
Technical Field
The invention relates to the technical field of top cover structures, in particular to a lug type top cover structure.
Background
The electrode lug is a metal conductor which leads the positive electrode and the negative electrode out of the battery core, and is a contact point for charging and discharging in popular terms; the battery top cover is an important component of the battery, and has the functions of sealing, explosion prevention, liquid leakage prevention and the like.
At present, a pole is arranged on a battery top cover, a pole lug is communicated with a battery core, and the pole lug is communicated with the pole lug through the pole lug welding pole lug, so that the charge and discharge of the battery are realized.
In the prior art, the pole is adopted, and as the battery assembly is more, the assembly process is more and complicated, the cost of the battery is higher, and the battery is inconvenient to assemble.
Disclosure of Invention
The invention aims to provide a lug type top cover structure and aims to solve the problem that in the prior art, a battery is inconvenient to assemble.
The invention is realized in such a way that the lug type top cover structure comprises a top cover sheet for sealing the inside of the battery and a lug piece penetrating through the top cover sheet, wherein the lug piece comprises a middle part, an extension part extending out of the battery and an inner end part arranged in the battery; two ends of the middle part are respectively connected and communicated with the outer extending part and the inner end part; the pole ear piece and the top cover piece are provided with glue injection gaps, the glue injection gaps are subjected to injection molding and encapsulation to form sealing layers, the top cover piece and the pole ear piece are respectively fixedly arranged with the sealing layers, and the sealing layers seal the glue injection gaps.
Further, the middle part and the top cover sheet are arranged in parallel, one end of the middle part is bent upwards to form a first connecting part, the first connecting part is arranged in an arc shape, the lower end of the extension part is connected with the first connecting part, and the upper end of the extension part extends upwards to be arranged; the other end of the middle part is bent downwards to form a second connecting part, the upper end of the inner end part is connected with the second connecting part, and the lower end of the inner end part is arranged in a downward extending mode.
Further, the sealing layer comprises at least one first reinforcing column and at least one second reinforcing column; the first connecting part forms at least one first lug hole, and when the plastic coating is performed, the plastic injection stays in the first lug hole to form a first reinforcing column; the middle part forms at least one second pole ear hole, and when the encapsulation of moulding plastics, the injecting glue is detained the second pole ear hole forms the second reinforcing column.
Further, the extension portion is arranged vertically to the top cover sheet, the inner end portion is arranged vertically to the top cover sheet, and the extension portion and the inner end portion are arranged in a direction opposite to each other in a direction away from each other in an extending manner.
Further, the tab member is provided with a fuse strip, and the fuse strip is disposed between the inner end portion and the intermediate portion; when the temperature of the fusing strip is higher than a set fusing value, the fusing strip fuses, and the inner end part and the middle part are in an open-circuit state.
Further, the tab member includes a positive tab and a negative tab, the positive tab and the negative tab forming the middle portion, the outer extension portion, and the inner end portion, respectively; the battery is internally provided with a battery core, the battery core is provided with an anode and a cathode, the inner end part of the anode lug is communicated with the anode of the battery core, and the inner end part of the cathode lug is communicated with the cathode of the battery core.
Further, the tab member includes two positive tabs and two negative tabs, inner ends of the two positive tabs are respectively communicated with the positive electrode of the battery cell, and inner ends of the two negative tabs are respectively communicated with the negative electrode of the battery cell; the extension parts of the two positive lugs are converged to form a positive electrode connecting part, and the extension parts of the two negative lugs are converged to form a negative electrode connecting part.
Further, the tab member is formed with a plurality of micro-etching holes, and when the encapsulation of moulding plastics, injecting glue closing cap micro-etching holes.
Further, the tab member is formed by compounding aluminum and copper; the extension portion is made of aluminum, and the inner end portion is made of copper.
Further, the top cover sheet comprises an upper cover and a lower cover, and the upper cover and the lower cover are in buckling arrangement; the upper cover forms an upper through hole and a plurality of glue injection holes, the lower cover forms a lower through hole, and the upper through hole and the lower through hole are arranged in an up-down opposite way; the tab member penetrates through the upper through hole and the lower through hole respectively.
Compared with the prior art, the tab type top cover structure provided by the invention has the advantages that the tab piece penetrates through the top cover plate, the external element is communicated with the external extension part, and the external extension part is matched with the middle part and the inner end part, so that the internal conduction between the external element and the battery is realized, and the charge and discharge of the battery are realized; meanwhile, under the action of the sealing layer, the sealing inside the battery is ensured, the leakage of the battery is effectively avoided, and the use safety of the battery is enhanced; the tab member is adopted, so that the welding procedure of battery assembly is reduced, the manufacturing cost is reduced, and the battery assembly is convenient.
Drawings
Fig. 1 is an exploded perspective view of a tab-type top cover structure of a bipolar tab type structure provided by the invention;
fig. 2 is a schematic perspective view of a bipolar lug type top cover structure provided by the invention;
fig. 3 is a schematic perspective view of a bipolar lug type top cover structure provided by the invention;
fig. 4 is a schematic perspective view of a bipolar tab member with a tab-type top cover structure according to the present invention;
fig. 5 is a schematic top view of an upper cover of the tab-type top cover structure provided by the present invention;
fig. 6 is an exploded perspective view of a single pole ear type structure of the tab type top cover provided by the invention;
fig. 7 is a schematic perspective view of a monopole ear type structure of a tab type top cover according to the present invention;
fig. 8 is a schematic perspective view of a monopole ear-type tab with a tab-type top cover structure according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-8, a preferred embodiment of the present invention is provided.
The lug type top cover structure provided by the invention is used for solving the problem of inconvenient battery assembly.
The tab type top cover structure comprises a top cover piece 10 and a tab piece 20, wherein the top cover piece 10 covers the inside of the battery, the tab piece 20 penetrates through the top cover piece 10, and the tab piece 20 comprises a middle part 25, an extension part 23 extending out of the battery and an inner end part 24 arranged in the inside of the battery; both ends of the intermediate portion 25 are respectively connected and communicate the extension portion 23 and the inner end portion 24; the tab member and the top cover sheet 10 are provided with glue injection gaps, the glue injection gaps are subjected to injection molding and encapsulation to form a sealing layer 30, the top cover sheet 10 and the tab member 20 are respectively fixedly arranged with the sealing layer 30, and the sealing layer 30 seals the glue injection gaps.
In the tab-type top cover structure, the tab member 20 penetrates through the top cover sheet 10, the external element is communicated with the external extension part 23, and the external extension part 23 is matched with the middle part 25 and the inner end part 24, so that the internal conduction between the external element and the battery is realized, and the charge and discharge of the battery are realized; meanwhile, under the action of the sealing layer 30, the sealing inside the battery is ensured, the leakage of the battery is effectively avoided, and the use safety of the battery is enhanced; the tab member 20 is adopted, so that the welding process of battery assembly is reduced, the manufacturing cost is reduced, and the battery assembly is facilitated.
In this embodiment, the middle portion 25 is arranged in parallel with the top cover sheet 10, one end of the middle portion 25 is bent upwards to form a first connection portion 26, the first connection portion 26 is arranged in an arc shape, the lower end of the extension portion 23 is connected with the first connection portion 26, and the upper end of the extension portion 23 extends upwards; the other end of the middle part 25 is bent downwards to form a second connecting part 28, the upper end of the inner end part 24 is connected with the second connecting part 28, and the lower end of the inner end part 24 is arranged in a downward extending way; the connection stability of the extension portion 23, the intermediate portion 25, and the inner end portion 24 is enhanced by the first and second connection portions 26 and 28.
Along the direction away from the inner end 24, the first connection portion 26 is arched outwards to form an arc, so that the bearing capacity of the first connection portion 26 is enhanced, and the service life of the tab member 20 is prolonged.
Along the direction away from the outer extension 23, the second connection portion 28 is arched outwards to form an arc, so that the bearing capacity of the second connection portion 28 is enhanced, and the service life of the tab member 20 is prolonged.
The sealing layer 30 comprises at least one first reinforcing column and at least one second reinforcing column; the first connecting part 26 forms at least one first lug hole 27, and when the plastic coating is injected, the plastic injection stays in the first lug hole 27 to form a first reinforcing column; the intermediate portion 25 defines at least one second ear hole 29, and when encapsulated by injection molding, the injection molding retains the second ear hole 29 to form a second reinforcing post.
Under the action of each first reinforcing column, the connection stability of the tab member 20 and the sealing layer 30 is enhanced, thereby enhancing the relative stability of the tab member 20 and the top cover sheet 10.
Along top-down direction, first utmost point ear hole 27 is the slope and arranges, and the colloid flows down when being convenient for the injecting glue, simultaneously, makes first reinforcement post be the slope and arranges, realizes multi-direction reinforcing, improves utmost point ear setting steadiness.
The extension part 23 is arranged vertically to the top cover sheet 10, the inner end part 24 is arranged vertically to the top cover sheet 10, and the extension part 23 and the inner end part 24 are arranged in a direction opposite to each other; the arrangement is convenient for the connection of the extension part 23 and an external element, so that the battery can be charged and discharged; and the extension 23 has a larger contact area, facilitating communication between the extension 23 and external components.
Specifically, the tab member 20 is provided with a fuse strip disposed between the inner end 24 and the intermediate portion 25; when the temperature of the fusing strip is higher than the set fusing value, the fusing strip fuses, and the inner end part 24 and the middle part 25 are in an open circuit state; thereby playing a role in protecting, reducing accidents caused by using the battery and improving the use safety of the battery.
The fusing strip is made of aluminum materials, the melting point range is about 660 degrees, and when the melting point range is larger than 660 degrees, the fusing strip fuses to play a short-circuit protection role on the battery.
The second connection part 26 comprises a plurality of connection bars, the fusing bars are arranged on the connection bars, and the fusing bars on the connection bars are arranged in series; thus, when the temperature is more than 660 ℃, each fusing strip is synchronously disconnected, and the battery is ensured to be short-circuit-protected.
The tab member 20 includes a positive tab 21 and a negative tab 22, and the positive tab 21 and the negative tab 22 form a middle portion 25, an outer extension portion 23, and an inner end portion 24, respectively; the battery is internally provided with a battery core, the battery core is provided with a positive electrode and a negative electrode, the inner end 24 of the positive electrode lug 21 is communicated with the positive electrode of the battery core, and the inner end 24 of the negative electrode lug 22 is communicated with the negative electrode of the battery core; the circuit communication between the battery core and the positive electrode lug 21 and the negative electrode lug 22 is realized, and the charge and discharge of the battery are realized.
The tab member 20 includes two positive tabs 21 and two negative tabs 22, the inner ends 24 of the two positive tabs 21 are respectively in communication with the positive electrode of the battery cell, and the inner ends 24 of the two negative tabs 22 are respectively in communication with the negative electrode of the battery cell; the extensions 23 of the two positive tabs 21 are joined together to form a positive connection, and the extensions 23 of the two negative tabs 22 are joined together to form a negative connection.
Like this, when the battery needs to export the heavy current, through two positive pole ears 21 and two negative pole ears 22 cooperation, realize dual output, guarantee heavy current output, and reduce the damage of heavy current to single utmost point ear, improve the life of utmost point ear.
The tab member 20 is formed with a plurality of micro-etching holes, and when the plastic coating is performed, the plastic injection covers the micro-etching holes; the relative fixing effect of the tab member 20 and the sealing layer 30 is enhanced, and the sealing effect is better.
The tab member 20 is formed by compounding aluminum and copper; the extension 23 is made of aluminum, and the inner end 24 is made of copper; the production of the tab member 20 is facilitated, and the production cost is reduced; at the same time, the communication between the outer extension 23 and the external element is ensured, and the communication between the inner end 24 and the cell is ensured.
The negative electrode lug can be made of all copper materials, so that the production cost is reduced.
The top cover sheet 10 comprises an upper cover 11 and a lower cover 12, wherein the upper cover 11 and the lower cover 12 are in buckling arrangement; the upper cover 11 forms an upper through hole 13 and a plurality of glue injection holes 14, the lower cover 12 forms a lower through hole, and the upper through hole 13 and the lower through hole are arranged in an up-down opposite way; the tab member 20 penetrates through the upper through hole 13 and the lower through hole, respectively; the upper cover 11 and the lower cover 12 are matched with the lugs.
The two positive lugs 21 are arranged oppositely, the two outer extension parts 23 and the two inner end parts 24 of the two positive lugs 21 are respectively and vertically arranged correspondingly, and the two middle parts 25 are horizontally arranged in a horizontally extending manner along opposite separation directions; thus, the whole integrity is better, and the use of the battery is ensured.
The two cathode lugs 22 are arranged opposite to each other, the two extension parts 23 and the two inner end parts 24 of the two cathode lugs 22 are respectively arranged vertically and correspondingly, and the two middle parts 25 are horizontally extended along opposite separation directions; thus, the whole integrity is better, and the use of the battery is ensured.
The upper cover 11 forms a concave groove which is concave downwards and provided with a bottom wall, and a plurality of glue injection holes 14 are formed on the bottom wall; like this, under the effect in sunken groove, when guaranteeing to mould plastics the rubber coating, the colloid has sufficient injecting glue volume, and sunken groove helps fixing a position the colloid, the rubber coating of being convenient for moulds plastics.
Embodiment of upper cover 11 and lower cover 12 with monopolar ear:
the middle part 25 is horizontally paved in the lower through hole, the inner end part 24 is vertically extended downwards, and the outer extension part 23 is vertically extended upwards and penetrates the upper through hole 13; the upper cover 11 and the lower cover 12 are respectively provided with a plurality of glue injection holes 14, and injection molding encapsulation is realized through the upper cover 11 or the lower cover 12;
the plurality of glue injection holes 14 are circumferentially arranged at intervals along the circumference of the lower through hole and are communicated with the lower through hole, so that when the glue is injected and coated, the gap between the inner end 24 and the lower through hole is blocked, and the sealing effect is improved.
The plurality of glue injection holes 14 are circumferentially arranged at intervals along the circumference of the upper through hole 13 and are communicated with the upper through hole 13, so that when the glue is injected and coated, the gap between the inner end 24 and the upper through hole 13 is blocked, and the sealing effect is improved.
Embodiment of upper cover 11 and lower cover 12 and bipolar ear:
the inner end 24 extends downwards vertically and penetrates through the upper through hole 13 and the lower through hole respectively, the middle part 25 is horizontally paved above the upper cover 11, and the outer part 23 extends upwards vertically away from the upper shell; the upper cover 11 is provided with a plurality of glue injection holes 14 to realize injection molding and encapsulation.
The plurality of glue injection holes 14 are circumferentially arranged at intervals along the circumference of the upper through hole 13 and are communicated with the upper through hole 13, so that when the glue is injected and coated, the gap between the inner end 24 and the upper through hole 13 is blocked, and the sealing effect is improved.
When injection molding encapsulation is carried out, the sealing colloid flows to wrap the two positive electrode lugs 21 or the two positive electrode lugs 21 respectively, so that the sealing layer 30 and the two positive electrode lugs 21 are fixedly arranged respectively, or the sealing layer 30 and the two negative electrode lugs 22 are fixedly arranged respectively; this improves the stability of the arrangement of the two positive electrode tabs 21 and the two negative electrode tabs 22.
The upper cover 11 forms two concave grooves, the distance between the two concave grooves forms a cover surface, and the upper through hole 13 and the plurality of glue injection holes 14 are respectively positioned in the cover surface; after the injection molding encapsulation, the sealing layer 30 covers the covering surface, thereby ensuring the sealing effect of the sealing layer 30.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The tab type top cover structure is characterized by comprising a top cover sheet for sealing the inside of the battery and tab pieces penetrating through the top cover sheet, wherein each tab piece comprises a middle part, an extension part extending out of the battery and an inner end part arranged in the battery; two ends of the middle part are respectively connected and communicated with the outer extending part and the inner end part; the pole ear piece and the top cover piece are provided with glue injection gaps, the glue injection gaps are subjected to injection molding and encapsulation to form sealing layers, the top cover piece and the pole ear piece are respectively fixedly arranged with the sealing layers, and the sealing layers seal the glue injection gaps.
2. The tab-type top cover structure according to claim 1, wherein the middle portion and the top cover sheet are arranged in parallel, one end of the middle portion is bent upwards to form a first connection portion, the first connection portion is arranged in an arc shape, the lower end of the extension portion is connected with the first connection portion, and the upper end of the extension portion extends upwards; the other end of the middle part is bent downwards to form a second connecting part, the upper end of the inner end part is connected with the second connecting part, and the lower end of the inner end part is arranged in a downward extending mode.
3. The tab cap structure of claim 2, wherein the sealing layer comprises at least one first reinforcing post and at least one second reinforcing post; the first connecting part forms at least one first lug hole, and when the plastic coating is performed, the plastic injection stays in the first lug hole to form a first reinforcing column; the middle part forms at least one second pole ear hole, and when the encapsulation of moulding plastics, the injecting glue is detained the second pole ear hole forms the second reinforcing column.
4. The tab-type top cover structure of claim 2, wherein the outer extension is disposed perpendicularly to the top cover sheet, the inner end is disposed perpendicularly to the top cover sheet, and the outer extension and the inner end extend in opposite directions.
5. The tab top cover structure according to any one of claims 1 to 4, wherein the tab member is provided with a fuse strip interposed between the inner end portion and the intermediate portion; when the temperature of the fusing strip is higher than a set fusing value, the fusing strip fuses, and the inner end part and the middle part are in an open-circuit state.
6. The tab cover structure according to any one of claims 1 to 4, wherein the tab member includes a positive tab and a negative tab, the positive tab and the negative tab forming the intermediate portion, the outer extension portion, and the inner end portion, respectively; the battery is internally provided with a battery core, the battery core is provided with an anode and a cathode, the inner end part of the anode lug is communicated with the anode of the battery core, and the inner end part of the cathode lug is communicated with the cathode of the battery core.
7. The tab top cover structure according to claim 6, wherein the tab member includes two positive tabs and two negative tabs, inner ends of the two positive tabs are respectively arranged in communication with the positive electrode of the battery cell, and inner ends of the two negative tabs are respectively arranged in communication with the negative electrode of the battery cell; the extension parts of the two positive lugs are converged to form a positive electrode connecting part, and the extension parts of the two negative lugs are converged to form a negative electrode connecting part.
8. The tab top cover structure of any one of claims 1-4 wherein the tab member is formed with a plurality of micro-etched holes, the micro-etched holes being encapsulated by glue injection when encapsulated by injection molding.
9. The tab top cover structure according to any one of claims 1 to 4, wherein the tab member is formed by compounding aluminum and copper; the extension portion is made of aluminum, and the inner end portion is made of copper.
10. The tab cap structure of any one of claims 1-4, wherein the cap piece comprises an upper cap and a lower cap, the upper cap and the lower cap being in a snap-fit arrangement; the upper cover forms an upper through hole and a plurality of glue injection holes, the lower cover forms a lower through hole, and the upper through hole and the lower through hole are arranged in an up-down opposite way; the tab member penetrates through the upper through hole and the lower through hole respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465702.XA CN110212147B (en) | 2019-05-30 | 2019-05-30 | Lug type top cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465702.XA CN110212147B (en) | 2019-05-30 | 2019-05-30 | Lug type top cover structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110212147A CN110212147A (en) | 2019-09-06 |
| CN110212147B true CN110212147B (en) | 2024-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910465702.XA Active CN110212147B (en) | 2019-05-30 | 2019-05-30 | Lug type top cover structure |
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| Country | Link |
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| CN (1) | CN110212147B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243228B (en) * | 2021-12-07 | 2023-11-24 | 湖北省泰璞电子有限公司 | Safety type battery tab integrally designed with insulating sheet |
| CN114824596B (en) * | 2022-04-06 | 2024-07-02 | 星恒电源股份有限公司 | Plain type square battery end cover and square battery |
| CN114914597A (en) * | 2022-05-12 | 2022-08-16 | 宜宾长盈精密技术有限公司 | Power battery, power battery top cover and sealing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205376627U (en) * | 2016-02-26 | 2016-07-06 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN106558672A (en) * | 2015-09-25 | 2017-04-05 | 东莞新能德科技有限公司 | Battery pack |
| CN108305982A (en) * | 2018-03-22 | 2018-07-20 | 深圳市瑞德丰精密制造有限公司 | Integrally formed electrode structure and battery cap |
| CN210040377U (en) * | 2019-05-30 | 2020-02-07 | 常州瑞德丰精密技术有限公司 | Pole ear type top cover structure |
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2019
- 2019-05-30 CN CN201910465702.XA patent/CN110212147B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558672A (en) * | 2015-09-25 | 2017-04-05 | 东莞新能德科技有限公司 | Battery pack |
| CN205376627U (en) * | 2016-02-26 | 2016-07-06 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN108305982A (en) * | 2018-03-22 | 2018-07-20 | 深圳市瑞德丰精密制造有限公司 | Integrally formed electrode structure and battery cap |
| CN210040377U (en) * | 2019-05-30 | 2020-02-07 | 常州瑞德丰精密技术有限公司 | Pole ear type top cover structure |
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