CN114006094A - Welding-free sealed type battery core cover plate - Google Patents
Welding-free sealed type battery core cover plate Download PDFInfo
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- CN114006094A CN114006094A CN202111252768.4A CN202111252768A CN114006094A CN 114006094 A CN114006094 A CN 114006094A CN 202111252768 A CN202111252768 A CN 202111252768A CN 114006094 A CN114006094 A CN 114006094A
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- cover plate
- sealing
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- 238000007789 sealing Methods 0.000 claims abstract description 111
- 238000005452 bending Methods 0.000 claims abstract description 55
- 210000004027 cell Anatomy 0.000 claims description 25
- 210000002421 cell wall Anatomy 0.000 claims description 15
- 210000001503 joint Anatomy 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 19
- 230000009471 action Effects 0.000 abstract description 9
- 238000003466 welding Methods 0.000 abstract description 6
- 238000005192 partition Methods 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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 of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
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- 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 of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
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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 invention relates to the technical field of welding-free electric core cover plates, and discloses a welding-free sealed electric core cover plate, which comprises a sealing ring, a cover plate body, an electrode post member and a rubber layer, wherein a rubber groove and a sealing groove are formed between the cover plate body and the electrode post member, the rubber groove and the sealing groove are vertically corresponding and are communicated, the rubber layer is arranged in the rubber groove, a density ring is arranged in the sealing groove, the rubber layer and the sealing ring are respectively sleeved with the electrode post member, and the rubber layer and the sealing ring are vertically abutted; the cover plate body is provided with a bending part which is arranged towards the rubber layer in a bending way, the bending part is used for limiting the rubber layer to be separated from the rubber groove, and the rubber layer and the sealing ring synchronously play a sealing role. Under the matching action of the sealing ring and the rubber layer, the sealing effect is achieved, and the assembly stability among the cover plate body, the sealing ring, the rubber layer and the pole piece is enhanced through the bent part; the assembling of the battery cell cover plate is realized without welding, the assembling steps are simplified, the assembling efficiency of the battery cell cover plate is improved, and the assembling of the sealing ring, the cover plate body and the pole piece is facilitated.
Description
Technical Field
The invention relates to the technical field of welding-free battery cell cover plates, in particular to a welding-free sealed battery cell cover plate.
Background
The battery cell is a device for converting chemical energy into electric energy and has a positive pole and a negative pole; are often used for electrical energy supply.
At present, electric core includes apron, electric core, anodal post and negative pole post etc. and anodal post and negative pole post run through the apron respectively and arrange, and the inner of anodal post and the inner of negative pole post extends to be the switching-on with electric core and arranges, and the outer end of anodal post and the outer end of negative pole post extend to the outside of apron respectively for be connected with external component, realize the external power supply.
In the prior art, the cover plate is assembled with the positive pole column and the negative pole column in a welding mode, the process is complex, welding seams are easy to remain, the appearance is affected, and in addition, the assembly efficiency is low due to the adoption of the welding mode.
Disclosure of Invention
The invention aims to provide a welding-free sealed battery cell cover plate, and aims to solve the problem that the battery cell cover plate is low in assembly efficiency in the prior art.
The welding-free sealed type battery cell cover plate comprises a sealing ring, a cover plate body, a pole piece and a rubber layer, wherein a rubber groove and a sealing groove are formed between the cover plate body and the pole piece, the rubber groove and the sealing groove are vertically corresponding and are communicated, the rubber layer is arranged in the rubber groove, the density ring is arranged in the sealing groove, the rubber layer and the sealing ring are respectively sleeved with the pole piece, and the rubber layer and the sealing ring are vertically abutted; the cover plate body is provided with a bending part, the bending part faces the rubber layer and is arranged in a bending mode, the bending part is used for limiting the rubber layer to be separated from the rubber groove, and the rubber layer and the sealing ring synchronously play a sealing role.
Further, the cover plate body is provided with a right lower through groove and a right upper through groove, the right upper through groove and the right lower through groove are vertically corresponding and are communicated, and the diameter value of the right upper through groove is larger than that of the right lower through groove; the sealing washer includes upper seal section, well seal section and lower seal section, well seal section's both ends respectively with the upper seal section with lower seal section is butt joint and an organic whole and arranges, lower seal section inlays to be established run through the groove under and arranges, run through the groove under and have under the cell wall, under the cell wall encircles the cover and establishes the lower seal section arranges, run through the groove on and have under and go up the kerve and go up the cell wall, well seal section tiling is contradicted under and go up the kerve and arrange, it establishes around the cover to go up the cell wall the upper seal section arranges.
Further, the pole piece comprises a positive pole and a negative pole, the positive pole and the negative pole are arranged correspondingly, the positive pole and the negative pole respectively penetrate through the cover plate body, and the positive pole and the negative pole are respectively arranged in an electrically connected manner with the battery cell; the positive post runs through under the groove and just go up the groove of going through, the outer edge of positive post forms positive portion of following, positive portion of following is the cyclic annular and arranges, positive portion of following is in just go up the groove and arrange, positive portion of following with just go up the cell wall centre gripping the upper seal section is arranged, positive portion of following with just go up the kerve centre gripping well seal section is arranged.
Further, the positive post includes positive pole head and just embedding head, positive pole head forms just along portion, the lower part of positive pole head with just the upper portion of embedding head is the butt joint and arranges, the lower part of positive pole head is inlayed and is established just last through the groove and arranges, just embedding head inlays and establishes just down through the groove and arranges, just embedding head with just down cell wall centre gripping the lower seal section arranges.
Further, the cover plate body is provided with a positive resistance ring which is annularly arranged, the positive resistance ring is surrounded by the positive lower groove wall, and the positive resistance ring are in butt joint arrangement; the lower sealing section and the positive resistance ring are arranged in an up-and-down abutting mode; the positive resistance ring is provided with a positive resistance surface, the positive resistance surface is horizontally arranged, the bottom of the lower sealing section forms a lower sealing surface, and the lower sealing surface and the positive resistance surface are arranged in an up-and-down fit mode.
Further, the bending part comprises a lower bending section and an upper bending section, the upper bending section and the lower bending section are respectively arranged in a ring shape, the upper bending section and the lower bending section are respectively arranged to surround the pole column piece, and the upper bending section and the lower bending section are in up-down butt joint and are integrally arranged; the lower folding section is arranged in a longitudinally extending mode in the direction departing from the cover plate body, and the upper folding section is arranged in a horizontally extending mode in the direction facing the rubber layer until the upper folding section abuts against the rubber layer.
Further, the rubber layer includes interior gluey section and outer gluey section, outer gluey section cover is established the lower part of interior gluey section is arranged, just interior gluey section with outer gluey section is integrated into one piece and arranges, go up the section with outer gluey section is from top to bottom and supports to press and arranges, go up roll over the section with utmost point post spare centre gripping interior gluey section is arranged.
Further, the top of the upper sealing section forms an upper sealing surface which forms a limiting groove which is arranged concave downwards; the outer rubber section is provided with an outer convex part which is arranged in a downward protruding mode, the outer convex part is embedded in the limiting groove, and the outer convex part completely occupies the limiting groove.
Furthermore, the kink is including enclosing the fender section, it is cyclic annular to enclose the fender section and arranges, enclose the lower part of fender section with it is butt joint and integrated into one piece to arrange to roll over the section on, enclose the upper portion of fender section along deviating from it arranges to roll over section direction longitudinal extension on, enclose the fender section and surround interior gluey section and arrange, enclose the fender section with utmost point post spare centre gripping interior gluey section is arranged.
Furthermore, the bending part comprises a plurality of partition plates, the upper parts of the partition plates and the upper bending sections are connected and integrally arranged, the partition plates are arranged at intervals in sequence, separation grooves are formed between the adjacent partition plates, and the separation grooves are filled with the outer glue sections.
Compared with the prior art, when the welding-free sealed type battery cell cover plate is assembled, the sealing ring, the cover plate body and the pole piece are oppositely arranged in the jig, at the moment, the pole piece penetrates through the cover plate body to be arranged, the sealing ring is arranged in the sealing groove, then, the bending part is formed through riveting, and then, the rubber layer is formed through injection molding towards the rubber groove; under the double cooperation action of the sealing ring and the rubber layer, the sealing function is realized; under the action of the bending part, the assembly stability among the cover plate body, the sealing ring, the rubber layer and the pole piece is enhanced; and, adopt this kind of assembly methods, need not the equipment that the welding can realize electric core apron, simplify electric core apron's equipment step, improve electric core apron's packaging efficiency, the equipment between the sealing washer of greatly being convenient for, the apron body and the utmost point post spare.
Drawings
Fig. 1 is a schematic cross-sectional view of a portion B of a welding-free sealed cell cover plate according to the present invention;
fig. 2 is a schematic top view of a welding-free sealed cell cover plate according to the present invention;
fig. 3 is an enlarged schematic view of a portion a of a welding-free sealed cell cover plate according to the present invention;
fig. 4 is a schematic partial cross-sectional view of a weld-free sealed cell cover plate according to the present invention;
fig. 5 is an enlarged view of the portion C of the welding-free sealed cell cover plate according to the present invention;
fig. 6 is an enlarged view of part C of another embodiment of a weld-free sealed cell cover plate according to the present invention;
fig. 7 is a schematic cross-sectional front view of a weld-free sealed cell cover plate according to the present invention;
fig. 8 is a schematic cross-sectional view illustrating the engagement between the sealing ring and the rubber layer of the welding-free sealed electrical core cover plate according to the present invention;
fig. 9 is a schematic cross-sectional view illustrating the engagement between a sealing ring and a rubber layer of another embodiment of a welding-free sealing type cell cover plate according to the present invention;
fig. 10 is a schematic layout cross-sectional view of a separator plate of a welding-free sealed cell cover plate according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail 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 orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation 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 intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-10, preferred embodiments of the present invention are provided.
The welding-free sealed type battery cell cover plate comprises a sealing ring 3, a cover plate body 1, a pole column member 2 and a rubber layer 4, wherein a rubber groove and a sealing groove are formed between the cover plate body 1 and the pole column member 2, the rubber groove and the sealing groove are vertically corresponding and are arranged in a communicated manner, the rubber layer 4 is arranged in the rubber groove, a density ring is arranged in the sealing groove, the rubber layer 4 and the sealing ring 3 are respectively sleeved with the pole column member 2, and the rubber layer 4 and the sealing ring 3 are arranged in an up-down abutting manner; the cover plate body 1 is provided with a bending part 11, the bending part 11 is arranged towards the rubber layer 4 in a bending mode, the bending part 11 is used for limiting the rubber layer 4 to be separated from the rubber groove, and the rubber layer 4 and the sealing ring 3 synchronously play a sealing role.
When the welding-free sealed battery core cover plate is assembled, the sealing ring 3, the cover plate body 1 and the pole column piece 2 are oppositely arranged in the jig, at the moment, the pole column piece 2 penetrates through the cover plate body 1 to be arranged, the sealing ring 3 is arranged in the sealing groove, then, the bending part 11 is formed through riveting, and then, the rubber layer 4 is formed through injection molding towards the rubber groove; under the double cooperation action of the sealing ring 3 and the rubber layer 4, the sealing function is achieved; under the action of the bending part 11, the assembly stability among the cover plate body 1, the sealing ring 3, the rubber layer 4 and the pole piece 2 is enhanced; and, adopt this kind of assembly methods, need not the equipment that the welding can realize electric core apron, simplify electric core apron's equipment step, improve electric core apron's packaging efficiency, the equipment between the sealing washer 3 of greatly being convenient for, apron body 1 and utmost point post spare 2.
The cover plate body 1 is provided with a right lower through groove 13 and a right upper through groove 12, the right upper through groove 12 and the right lower through groove 13 are arranged in an up-down corresponding and communicating mode, and the diameter value of the right upper through groove 12 is larger than that of the right lower through groove 13; facilitating the cooperation between the pole piece 2 and the cover plate body 1.
The sealing ring 3 comprises an upper sealing section 31, a middle sealing section 32 and a lower sealing section 33, wherein two ends of the middle sealing section 32 are respectively butted with the upper sealing section 31 and the lower sealing section 33 and integrally arranged, the lower sealing section 33 is embedded with a right lower through groove 13, the right lower through groove 13 is provided with a right lower groove wall, the right lower groove wall is arranged by being sleeved with the lower sealing section 33, the right upper through groove 12 is provided with a right upper bottom groove and a right upper groove wall, the middle sealing section 32 is tiled to abut against the right upper bottom groove, and the right upper groove wall is arranged by being sleeved with the upper sealing section 31; thus, under the matching action of the upper sealing section 31, the middle sealing section 32 and the lower sealing section 33, the sealing effect is guaranteed.
The pole piece 2 comprises a positive pole piece 21 and a negative pole piece 22, the positive pole piece 21 and the negative pole piece 22 are arranged correspondingly, the positive pole piece 21 and the negative pole piece 22 respectively penetrate through the cover plate body 1, and the positive pole piece 21 and the negative pole piece 22 are respectively arranged in an electrical connection manner with the battery cell; and the external power supply is realized by matching the battery cell with the positive pole 21 and the negative pole 22.
The positive pole 21 penetrates through the right lower through groove 13 and the right upper through groove 12, the outer edge of the positive pole 21 forms a positive edge part, the positive edge part is annularly arranged, the positive edge part is arranged in the right upper through groove 12, the positive edge part and the right upper groove wall clamp an upper sealing section 31, and the positive edge part and the right upper bottom groove clamp a middle sealing section 32; under the positive portion of following and the just mating reaction of cell wall, sealed section 31's setting steadiness in the reinforcing, simultaneously, sealed effect of sealed section 31 in the guarantee.
The positive pole column 21 comprises a positive pole head and a positive embedded head, the positive pole head forms a positive edge part, the lower part of the positive pole head is in butt joint with the upper part of the positive embedded head, the lower part of the positive pole head is embedded with a positive upper through groove 12, the positive embedded head is embedded with a positive lower through groove 13, and the positive embedded head and the positive lower groove wall clamp a lower sealing section 33; under the combined action of just interior top of inlaying and the cell wall under, the setting steadiness of sealed section 33 under the reinforcing, simultaneously, sealed effect of section 33 under the guarantee.
The positive pole head and the positive embedded head are integrally formed and arranged, so that the positive pole column 21 and the cover plate body 1 can be conveniently assembled.
The cover plate body 1 is provided with a positive resistance ring 14, the positive resistance ring 14 is annularly arranged, a positive lower groove wall surrounds the positive resistance ring 14, and the positive lower groove wall and the positive resistance ring 14 are in butt joint arrangement; the lower sealing section 33 is arranged in up-and-down abutting connection with the positive resistance ring 14; the positive resistance ring 14 has a positive resistance surface, the positive resistance surface is arranged horizontally, the bottom of the lower sealing section 33 forms a lower sealing surface, and the lower sealing surface and the positive resistance surface are arranged in an up-down fit manner.
Thus, when the sealing ring is assembled, the setting position of the sealing ring 3 is positioned under the action of the positive resistance ring 14, the correct setting of the sealing ring 3 is ensured, and the sealing effect of the sealing ring 3 is ensured.
The positive resistance surface synchronously supports the rubber layer 4 and the positive embedded head, so that the positive resistance ring 14 plays a role in positioning and supporting the placement of the positive pole 21.
The negative pole 22 penetrates through the negative lower through groove and the negative upper through groove, a negative edge part is formed on the outer edge of the negative pole 22 and is annularly arranged, the negative edge part is arranged in the negative upper through groove, the negative edge part and the negative upper groove wall clamp an upper sealing section 31, and the negative edge part and the negative upper bottom groove clamp a middle sealing section 32; under the mating reaction of cell wall on negative edge portion and the burden, sealed section 31's setting steadiness in the reinforcing, simultaneously, sealed effect of sealed section 31 in the guarantee.
The negative pole column 22 comprises a negative pole head and a negative embedded head, the negative pole head forms a negative edge part, the lower part of the negative pole head is in butt joint with the upper part of the negative embedded head, the lower part of the negative pole head is embedded with a negative upper through groove, the negative embedded head is embedded with a negative lower through groove, and the negative embedded head and the negative lower groove wall clamp a lower sealing section 33; under the mating reaction of cell wall under embedded head of burden and the burden, the setting steadiness of sealed section 33 under the reinforcing, simultaneously, sealed effect of sealed section 33 under the guarantee.
The negative pole head and the negative embedded head are integrally formed and arranged, so that the assembly of the negative pole column 22 and the cover plate body 1 is facilitated.
The cover plate body 1 is provided with a negative resistance ring which is annularly arranged, the negative lower groove wall surrounds the negative resistance ring, and the negative lower groove wall and the negative resistance ring are in butt joint arrangement; the lower sealing section 33 and the negative resistance ring are arranged in an up-and-down abutting mode; the negative resistance ring is provided with a negative resistance surface which is horizontally arranged, the bottom of the lower sealing section 33 forms a lower sealing surface, and the lower sealing surface and the negative resistance surface are vertically attached.
Like this, when assembling, under the effect of negative resistance ring, fix a position the setting position of sealing washer 3, guarantee the correct setting of sealing washer 3, guarantee sealing ring 3's sealed effect.
The negative resistance surface synchronously supports the rubber layer 4 and the negative embedded head, so that the negative resistance ring plays a role in positioning and supporting the placement of the negative pole 22.
The bending part 11 comprises a lower bending section 112 and an upper bending section 111, the upper bending section 111 and the lower bending section 112 are respectively arranged in a ring shape, the upper bending section 111 and the lower bending section 112 are respectively arranged around the pole column 2, and the upper bending section 111 and the lower bending section 112 are in up-down butt joint and are integrally arranged; the lower folding section 112 is arranged along the direction departing from the cover plate body 1 in a longitudinally extending manner, and the upper folding section 111 is arranged along the direction facing the rubber layer 4 in a horizontally extending manner until the upper folding section 111 is arranged in a manner of abutting against the rubber layer 4.
Like this, the section 112 of rolling over down surrounds rubber layer 4, plays the fixed action to rubber layer 4, under the effect of the section 111 of rolling over in last, strengthens the setting steadiness on rubber layer 4, and effectively avoids rubber layer 4 to break away from the rubber groove, ensures the sealed effect on rubber layer 4.
The structure comprises two bent parts 11, wherein the two bent parts 11 are respectively arranged corresponding to a positive pole 21 and a negative pole 22; the bending part 11, the positive pole column 21, the rubber layer 4 and the sealing ring 3 are correspondingly arranged, and the bending part 11, the negative pole column 22, the rubber layer 4 and the sealing ring 3 are correspondingly arranged.
The rubber layer 4 comprises an inner rubber section 41 and an outer rubber section 42, the outer rubber section 42 is sleeved on the lower portion of the inner rubber section 41, the inner rubber section 41 and the outer rubber section 42 are integrally formed, the upper folding section 111 and the outer rubber section 42 are arranged in a vertically abutting-pressing mode, and the upper folding section 111 and the pole piece 2 clamp the inner rubber section 41; under the cooperation of the upper folding section 111 and the outer rubber section 42, the setting stability of the rubber layer 4 is enhanced, and the sealing effect of the rubber layer 4 is effectively guaranteed.
The top of the upper sealing section 31 forms an upper sealing surface which forms a limiting groove arranged in a downward concave manner; the outer rubber section 42 is provided with an outer convex part 43, the outer convex part 43 is arranged in a downward convex mode, the outer convex part 43 is embedded in a limiting groove arrangement, and the outer convex part 43 completely occupies the limiting groove arrangement; under the cooperation of outer convex part 43 and limiting groove, the cooperation between reinforcing sealing washer 3 and the rubber layer 4, reinforcing sealing washer 3 and rubber layer 4 set up the steadiness, and effectively ensure sealed effect.
The bending part 11 comprises a surrounding section 113, the surrounding section 113 is annularly arranged, the lower part of the surrounding section 113 is in butt joint with the upper folding section 111 and is integrally formed, the upper part of the surrounding section 113 longitudinally extends along the direction deviating from the upper folding section 111, the surrounding section 113 surrounds the inner adhesive section 41 and is arranged, and the surrounding section 113 and the pole piece 2 clamp the inner adhesive section 41 and are arranged; under the effect of enclosing fender section 113, increase kink 11 and rubber layer 4's conflict area, strengthen the setting steadiness on rubber layer 4 to and the sealed effect of guarantee rubber layer 4, simultaneously, under the effect of enclosing fender section 113, the design on rubber layer 4 of being convenient for.
When riveting operation is carried out, the jig clamps and fixes the lower folding section 112 and the upper folding section 111 respectively, then the enclosure section 113 is formed by riveting through the riveting piece, and then the upper folding section 111 is formed by riveting; at this moment, form the rubber groove between utmost point post 2 and the bending segment, towards the rubber groove formation rubber layer 4 of moulding plastics, guarantee leakproofness and realize the equipment between utmost point post 2 and the apron body 1.
The bending part 11 comprises a plurality of partition plates 114, the upper parts of the partition plates 114 are connected with the upper bending section 111 and are integrally formed, the partition plates 114 are arranged in sequence at intervals, partition grooves are formed between the adjacent partition plates 114, and the outer glue sections 42 are filled in the partition grooves; like this, strengthen the relative steadiness of outer section of glue 42 and kink 11, improve the steadiness that sets up on rubber layer 4, avoid the skew on rubber layer 4, effectively ensure the sealed effect on rubber layer 4.
The front edge part is provided with a front edge surface which is horizontally arranged and is pressed against the bottom surface of the inner glue section 41 and the bottom surface of the outer glue section 42; the front edge surface is provided with a plurality of convex particles which are arranged in a convex manner towards the direction of the rubber layer 4, and the convex particles are embedded in the rubber layer 4; like this, strengthen the relative steadiness between rubber layer 4 and the positive post 21, improve the setting steadiness on rubber layer 4, avoid the skew on rubber layer 4, effectively ensure the sealed effect on rubber layer 4.
The negative edge part is provided with a negative edge surface which is horizontally arranged and is pressed against the bottom surface of the inner glue section 41 and the bottom surface of the outer glue section 42; the negative edge surface is provided with a plurality of convex particles which are arranged in a convex manner towards the direction of the rubber layer 4, and the convex particles are embedded in the rubber layer 4; thus, the relative stability between the rubber layer 4 and the negative pole column 22 is enhanced, the setting stability of the rubber layer 4 is improved, the deviation of the rubber layer 4 is avoided, and the sealing effect of the rubber layer 4 is effectively guaranteed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The welding-free sealed type battery cell cover plate is characterized by comprising a sealing ring, a cover plate body, a pole piece and a rubber layer, wherein a rubber groove and a sealing groove are formed between the cover plate body and the pole piece, the rubber groove and the sealing groove are vertically corresponding and are communicated, the rubber layer is arranged in the rubber groove, a density ring is arranged in the sealing groove, the rubber layer and the sealing ring are respectively sleeved with the pole piece, and the rubber layer and the sealing ring are vertically abutted;
the cover plate body is provided with a bending part, the bending part faces the rubber layer and is arranged in a bending mode, the bending part is used for limiting the rubber layer to be separated from the rubber groove, and the rubber layer and the sealing ring synchronously play a sealing role.
2. The welding-free sealed battery cell cover plate of claim 1, wherein the cover plate body is provided with a right lower through groove and a right upper through groove, the right upper through groove and the right lower through groove are arranged in an up-down corresponding and communicating manner, and the diameter value of the right upper through groove is larger than that of the right lower through groove; the sealing washer includes upper seal section, well seal section and lower seal section, well seal section's both ends respectively with the upper seal section with lower seal section is butt joint and an organic whole and arranges, lower seal section inlays to be established run through the groove under and arranges, run through the groove under and have under the cell wall, under the cell wall encircles the cover and establishes the lower seal section arranges, run through the groove on and have under and go up the kerve and go up the cell wall, well seal section tiling is contradicted under and go up the kerve and arrange, it establishes around the cover to go up the cell wall the upper seal section arranges.
3. The weld-free sealed cell cover plate of claim 2, wherein the pole piece comprises a positive pole and a negative pole, the positive pole and the negative pole are arranged correspondingly, the positive pole and the negative pole respectively penetrate through the cover plate body, and the positive pole and the negative pole are respectively arranged in electrical connection with the cell; the positive post runs through under the groove and just go up the groove of going through, the outer edge of positive post forms positive portion of following, positive portion of following is the cyclic annular and arranges, positive portion of following is in just go up the groove and arrange, positive portion of following with just go up the cell wall centre gripping the upper seal section is arranged, positive portion of following with just go up the kerve centre gripping well seal section is arranged.
4. The welding-free sealed electrical core cover plate of claim 3, wherein the positive post comprises a positive head and a positive embedded head, the positive head forms the positive edge portion, the lower portion of the positive head is in butt joint with the upper portion of the positive embedded head, the lower portion of the positive head is embedded in the positive through groove, the positive embedded head is embedded in the positive through groove, and the positive embedded head and the positive lower groove wall clamp the lower sealing section.
5. The weld-free sealed electrical core cover plate of claim 4, wherein the cover plate body has a positive resistance ring, the positive resistance ring is arranged in a ring shape, the positive lower groove wall surrounds the positive resistance ring, and the positive lower groove wall is arranged in a butt joint with the positive resistance ring; the lower sealing section and the positive resistance ring are arranged in an up-and-down abutting mode; the positive resistance ring is provided with a positive resistance surface, the positive resistance surface is horizontally arranged, the bottom of the lower sealing section forms a lower sealing surface, and the lower sealing surface and the positive resistance surface are arranged in an up-and-down fit mode.
6. The welding-free sealed electrical core cover plate of any one of claims 2 to 5, wherein the bending portion comprises a lower bending portion and an upper bending portion, the lower bending portion and the upper bending portion are respectively arranged in a ring shape, the upper bending portion and the lower bending portion are respectively arranged to surround the pole piece, and the upper bending portion and the lower bending portion are arranged in an up-and-down butt joint and are integrally arranged; the lower folding section is arranged in a longitudinally extending mode in the direction departing from the cover plate body, and the upper folding section is arranged in a horizontally extending mode in the direction facing the rubber layer until the upper folding section abuts against the rubber layer.
7. The welding-free sealed electrical core cover plate of claim 6, wherein the rubber layer comprises an inner rubber section and an outer rubber section, the outer rubber section is sleeved on the lower portion of the inner rubber section, the inner rubber section and the outer rubber section are integrally formed, the upward folding section and the outer rubber section are arranged in an up-down pressing manner, and the upward folding section and the pole piece clamp the inner rubber section.
8. The weld-free, sealed cell cover plate of claim 7, wherein the top of the upper seal section forms an upper seal surface that forms a defining groove that is downwardly concave; the outer rubber section is provided with an outer convex part which is arranged in a downward protruding mode, the outer convex part is embedded in the limiting groove, and the outer convex part completely occupies the limiting groove.
9. The welding-free sealed electrical core cover plate of claim 8, wherein the bending portion comprises a surrounding portion, the surrounding portion is arranged in a ring shape, a lower portion of the surrounding portion is butted with the upper folding portion and is integrally formed, an upper portion of the surrounding portion extends longitudinally in a direction away from the upper folding portion, the surrounding portion surrounds an inner adhesive portion, and the surrounding portion and the pole member clamp the inner adhesive portion.
10. The welding-free sealed electrical core cover plate of any one of claims 7 to 9, wherein the bent portion comprises a plurality of separation plates, the upper portions of the separation plates are connected and integrally arranged with the folded-up section, the separation plates are arranged in sequence at intervals, separation grooves are formed between adjacent separation plates, and the outer glue section fills the separation grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111252768.4A CN114006094A (en) | 2021-10-27 | 2021-10-27 | Welding-free sealed type battery core cover plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111252768.4A CN114006094A (en) | 2021-10-27 | 2021-10-27 | Welding-free sealed type battery core cover plate |
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| CN114006094A true CN114006094A (en) | 2022-02-01 |
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