CN114512748A - Full utmost point ear top cap subassembly and full utmost point ear battery - Google Patents

Abstract

The invention discloses a full-lug top cover assembly and a full-lug battery, wherein the full-lug top cover assembly comprises: top flap, lower plastic, first connecting piece and second connecting piece. The lower plastic is matched with the bottom of the top cover plate, and a first groove and a second groove which are upwards concave and arranged at intervals are arranged at the bottom of the lower plastic towards the direction of the top cover plate. A first clamping groove is formed in the groove wall of one side, away from the second groove, of the first groove and is communicated with the first groove. And a second clamping groove is formed in the groove wall of one side, away from the first groove, of the second groove and is communicated with the second groove. First assembly portion joint on the first connecting piece is in first recess, and first transition portion joint is in first draw-in groove. The second assembly portion of the second connecting piece is clamped in the second groove, and the second transition portion is clamped in the second clamping groove. The pins on the two connecting sheets extend out towards the direction far away from the top cover sheet. The full-lug top cover assembly provided by the embodiment of the invention is rapid in assembly and positioning, high in efficiency and accurate in pin orientation after assembly.

Description

Full utmost point ear top cap subassembly and full utmost point ear battery

Technical Field

The invention belongs to the technical field of power batteries, and particularly relates to a full-lug top cover assembly and a full-lug battery.

Background

Assembling and manufacturing a lithium ion battery with excellent performance is a key step for researching and developing new energy automobiles.

Lithium ion battery has lamination formula and coiling formula usually, and the utmost point ear of coiling formula lithium cell divide into two kinds, one kind for the xenogenesis utmost point ear of being connected with positive plate and negative pole piece, another kind is the base member side of positive plate and negative pole piece and sets up the region of uncoated coating, and the pole piece is convoluteed the back, and this region is direct and the electrically conductive connection piece welding on the top cap, forms to full utmost point ear battery.

And because the structure that constitutes the top cap piece is more, and the assembly process is slower, especially to having the full utmost point ear top cap of upright pin, takes place to rock easily in the assembly process, leads to the deviation to appear in the assembly position of upright pin, is difficult to accomplish the welding with electric core, causes the battery working property of assembly completion poor, and battery internal resistance is great, has greatly influenced lithium ion battery's use and has experienced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the full-lug top cover assembly which is fast and convenient to assemble and solves the problem that the assembled battery has poor working performance due to easy shaking during assembly in the related technology.

The invention also aims to provide a full-tab battery with the full-tab top cover assembly.

According to an embodiment of the invention, a full tab header assembly comprises: a top cover sheet; the lower plastic is matched with the bottom of the top cover plate, a first groove and a second groove which are concave upwards are formed in the bottom of the lower plastic in the direction towards the top cover plate, and the first groove and the second groove are respectively arranged on two sides of the lower plastic in the length direction at intervals; a first clamping groove is formed in the groove wall of one side, away from the second groove, of the first groove, and the first clamping groove is communicated with the first groove; a second clamping groove is formed in the groove wall of one side, away from the first groove, of the second groove and is communicated with the second groove; the first connecting piece comprises a first assembling portion, a first transition portion and a first pin which are sequentially and smoothly connected, the first assembling portion is clamped in the first groove, the first transition portion is clamped in the first clamping groove, and the first pin extends downwards towards the direction far away from the top cover plate; the second connecting piece comprises a second assembling portion, a second transition portion and a second pin which are sequentially and smoothly connected, the second assembling portion is clamped in the second groove, the second transition portion is clamped in the second clamping groove, and the second pin extends downwards towards the direction far away from the top cover plate.

According to the full-lug top cover assembly provided by the embodiment of the invention, the first assembly part is clamped in the first groove of the lower plastic, and the first transition part is clamped in the first clamping groove, so that the first connecting sheet and the lower plastic are quickly assembled and positioned, the first connecting sheet is not easy to shake after assembly is completed, the setting position of the first pin is not shifted, and the first pin is conveniently connected with a battery cell; the second assembly part is clamped in a second groove of the lower plastic, and the second transition part is clamped in a second clamping groove, so that the second connecting piece and the lower plastic are quickly assembled and positioned, and are not easy to shake after being assembled; the arrangement position of the second pin can be enabled not to deviate, and the second pin is convenient to connect with the battery core. Therefore, the full-lug top cover assembly is convenient and quick to assemble the first connecting sheet and the second connecting sheet and lower plastic, positions of all the parts are relatively fixed after assembly, deviation does not occur, and the precision and the assembly efficiency of the whole battery assembly process are favorably improved.

According to the full-lug top cover assembly provided by the embodiment of the invention, at least one square clamping angle is arranged in each of the first groove and the second groove, and each of the first assembling part and the second assembling part is provided with a clamping edge limited by the clamping angle; the square clamping angle is far away from the first clamping groove or the second clamping groove.

According to the full-lug top cover assembly provided by the embodiment of the invention, the first transition part and the second transition part are provided with certain radian, the part of the first transition part connected with the first assembling part is arranged in the first groove, and the part of the second transition part connected with the second assembling part is arranged in the second groove.

Advantageously, the intersecting lines formed by the first transition parts and the tangent planes of the two side ends of the first assembly part and the first pin are located in the first clamping groove; and the second transition part is positioned in the second clamping groove along an intersection line formed by the tangent planes of the two side ends of the second transition part, which are connected with the second assembly part and the second pin respectively.

Optionally, the first transition portion and the second transition portion are both bent at 90 degrees.

The full-lug top cover assembly further comprises a positive pole column and a negative pole column, a first assembly hole and a second assembly hole penetrating through the top cover plate along the thickness direction are formed in the top cover plate, a first through hole is formed in the lower plastic rubber and is opposite to the first assembly hole, a first matching hole is formed in the first connecting piece and is opposite to the first assembly hole, the negative pole column sequentially penetrates through the first matching hole, the first through hole and the first assembly hole, and the bottom of the negative pole column is clamped in the first matching hole; the lower plastic is right opposite to a second assembling hole, a second through hole is formed in the second assembling hole, a second matching hole is formed in the second connecting piece right opposite to the second assembling hole, the positive pole sequentially penetrates through the second matching hole, the second through hole and the second assembling hole, and the bottom of the positive pole is clamped in the second matching hole.

According to a further embodiment of the present invention, the inner wall of the first fitting hole extends radially inward to form a first fitting platform, the bottom of the negative pole column forms a first boss and a second boss which are arranged in a step shape, the first boss is in contact fit with the bottom surface of the first fitting platform, and the side surface of the second boss is in fit with the side surface of the first fitting platform; the inner wall of the second matching hole extends inwards in the radial direction to form a second matching platform, a third boss and a fourth boss which are arranged in a step shape are formed at the bottom of the positive pole, the third boss is in contact fit with the bottom surface of the second matching platform, and the side surface of the fourth boss is matched with the side surface of the second matching platform.

Optionally, a first sinking platform and a second sinking platform are arranged on the top cover sheet in a downward protruding manner, the first assembly hole is formed in the top cover sheet through the first sinking platform, and the second assembly hole is formed in the top cover sheet through the second sinking platform; the top of lower plastic is towards keeping away from the recessed first heavy groove and the heavy groove of second that is equipped with of direction of top cover plate, first heavy groove with first heavy spacing connection of platform, the heavy groove of second with the heavy spacing connection of platform of second.

Optionally, the first pins include at least one, and when the number of the first pins is multiple, a first supporting pin is connected between the multiple first pins; the second pin comprises at least one, and when the second pins are multiple, second supporting legs are connected among the multiple second pins.

An all-tab battery according to an embodiment of the present invention includes: the electrode plates with different polarities of the battery cell extend out of two sides of the battery cell; the shell is internally provided with all the battery cells; the full lug top cover assembly is the full lug top cover assembly, the full lug top cover assembly covers the shell, and the first pin and the second pin are respectively connected with the pole pieces in two different polarities.

According to the full-tab battery provided by the embodiment of the invention, after the full-tab top cover assembly is assembled on the shell and electrically connected with the battery core, all the parts are stably connected, the working performance of the battery is excellent, the overall assembly process is high in precision, and the assembly is convenient and rapid.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a full tab cap assembly according to an embodiment of the present invention.

Fig. 2 is an exploded view from a first perspective of a full lug cap assembly in accordance with one embodiment of the present invention.

Fig. 3 is an exploded view from a second perspective of a full lug cap assembly in accordance with one embodiment of the present invention.

Fig. 4 is a longitudinal cross-sectional view of a full tab header assembly in accordance with one embodiment of the present invention.

Fig. 5 is an exploded view of the top cover plate, the negative pole post, the positive pole post, the first sealing ring and the second sealing ring according to an embodiment of the present invention.

Fig. 6 is a schematic perspective view illustrating a full tab battery according to an embodiment of the present invention.

Fig. 7 is an exploded view of a full tab battery according to an embodiment of the present invention.

Fig. 8 is a schematic view of a fitting relationship between a full tab cap assembly and a battery cell according to an embodiment of the present invention.

Fig. 9 is a cross-sectional view of a full tab battery in a first longitudinal plane in accordance with one embodiment of the present invention.

Fig. 10 is a cross-sectional view of a full tab battery in a second longitudinal plane in accordance with one embodiment of the present invention.

Reference numerals:

a full tab top cover assembly 100,

A top cover sheet 1,

A first sinking platform 11, a first assembly hole 111, a turnover hole 112,

A second sinking platform 12, a second assembly hole 121,

A third assembly hole 131,

A first positioning sink groove 15, a second positioning sink groove 16,

A lower plastic 2,

A first groove 21, a first via hole 211,

The second groove 22, the second via 221,

A first clamping groove 23, a second clamping groove 24, a square clamping corner 25,

A first sink 26, a turnover through hole 261,

A second sink tank 27,

A fourth sink tank 28, a pressure relief hole 281,

A first connecting piece 3,

A first assembling portion 31, a first mating hole 311, a first mating table 312, a third sinking groove 313, a vent 3131,

A first transition 32, a neck finish 321; a first lead 33, a first supporting leg 34,

A second connecting piece 4,

A second fitting portion 41, a second fitting hole 411, a second fitting table 412,

A second transition part 42, a fuse hole 421, a second pin 43, a second supporting leg 44,

Negative pole 51, first boss 511, second boss 512,

A positive pole 52, a third boss 521, a fourth boss 522,

A turnover valve 61, an explosion-proof valve 62, an explosion-proof sheet 63, a liquid filling interface 64,

A first seal ring 71, a second seal ring 72,

A first upper plastic 81, a second upper plastic 82,

A negative pole riveting block 91, a positive pole riveting block 92,

A full-tab battery 1000,

A battery cell 200, a first connection portion 210, a second connection portion 220,

A housing 300, a top opening 310.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

A full lug cap assembly 100 in accordance with an embodiment of the present invention is described with reference to the accompanying drawings.

A full tab header assembly 100 according to an embodiment of the present invention, as shown in fig. 1, includes: top flap 1, lower plastic 2, first connection piece 3 and second connection piece 4.

Wherein, as shown in fig. 1 and 2, the lower plastic 2 is matched with the bottom of the top cover sheet 1.

As shown in fig. 2, the bottom of the lower plastic 2 is provided with a first groove 21 and a second groove 22 which are recessed upwards in a direction towards the top cover plate 1, and the first groove 21 and the second groove 22 are respectively arranged at two sides of the lower plastic 2 in the length direction at intervals. That is, the lower plastic is integrally formed and serves as both the anode lower plastic and the cathode lower plastic.

Continuing to refer to fig. 2, a first slot 23 is formed on a slot wall of one side of the first groove 21 away from the second groove 22, and the first slot 23 is communicated with the first groove 21; a second clamping groove 24 is formed in the groove wall of one side, away from the first groove 21, of the second groove 22, and the second clamping groove 24 is communicated with the second groove 22.

And, first connecting piece 3 includes first assembly portion 31, first transition portion 32 and first pin 33 of smooth connection in proper order, and first assembly portion 31 joint is in first recess 21, and first transition portion 32 joint is in first draw-in groove 23, and first pin 33 stretches out downwards towards the direction of keeping away from top flap 1. That is, the first transition portion 32 is snapped into the first card slot 23 while the first fitting portion 31 is snapped into the first recess 21.

Correspondingly, the second connecting sheet 4 comprises a second assembling portion 41, a second transition portion 42 and a second pin 43 which are smoothly connected in sequence, the second assembling portion 41 is clamped in the second groove 22, the second transition portion 42 is clamped in the second clamping groove 24, and the second pin 43 extends downwards in the direction away from the top cover sheet 1. That is, the second transition portion 42 is snapped into the second card slot 24 while the second mounting portion 41 is snapped into the second recess 22.

As can be seen from the above structure, in the full tab top cap assembly 100 according to the embodiment of the invention, the first assembling portion 31 is clamped in the first groove 21 of the lower plastic 2, and the first transition portion 32 is clamped in the first clamping groove 23, because the first transition portion 32 is fixed in position relative to the first assembling portion 31, and the first clamping groove 23 is fixed in position relative to the first groove 21, the position of the first connecting piece 3 assembled at the bottom of the lower plastic 2 is unique and determined, so that the first connecting piece 3 is accurately and quickly assembled in the process of assembling the lower plastic 2, the assembling efficiency is high, the assembling is not easy to reverse, after the assembling is completed, the first connecting piece 3 is not easy to shake with the lower plastic 2, the arrangement position of the first pin 33 connected with the first transition portion 32 is not shifted, and the first pin 33 is conveniently and stably connected with one side of the electrical core 200.

Correspondingly, the second assembly portion 41 is clamped in the second groove 22 of the lower plastic 2, and the second transition portion 42 is clamped in the second clamping groove 24, because the second transition portion 42 is fixed in position relative to the second assembly portion 41, and the second clamping groove 24 is fixed in position relative to the second groove 22, the position of the bottom of the lower plastic 2 where the second connecting sheet 4 is assembled is unique and determined, so that the second connecting sheet 4 is accurate and rapid in the process of assembling the lower plastic 2, the assembly efficiency is high, the assembly is not easy to reverse, the second connecting sheet 4 after the assembly is completed is not easy to shake with the lower plastic 2, the setting position of the second pin 43 connected with the second transition portion 42 is not deviated, and the second pin 43 is convenient to be stably connected with the other side of the battery cell 200.

In addition, the first connecting piece 3 assembled in the first groove 21 and the second connecting piece 4 assembled in the second groove 22 of the present application save the space for installing the battery cell 200 at the lower part, and can improve the design capacity of the battery cell 200.

It can be understood that the full tab top cover assembly 100 of the application is convenient, quick and accurate in positioning when being assembled with the first connecting sheet 3, the second connecting sheet 4 and the lower plastic 2, and the positions of the parts after assembly are relatively fixed without deviation, thereby being beneficial to improving the precision of the whole full tab battery 1000 assembly process and the assembly efficiency.

In some embodiments of the present invention, as shown in fig. 2, each of the first recess 21 and the second recess 22 has at least one square corner 25 therein, and each of the first assembling portion 31 and the second assembling portion 41 has a clamping edge limited by the corner. That is, when the first fitting portion 31 is fitted into the first recess 21, relative rotation therebetween is not easily caused, and shaking is not caused, and only a unique and definite fitting direction and fitting position are provided; when the second fitting portion 41 is fitted into the second groove 22, relative rotation and rattling therebetween are not liable to occur, and there is also only a unique and definite fitting direction and fitting position.

Optionally, as shown in fig. 2, the square corner 25 in the first groove 21 is far away from the first slot 23, so that the first slot 23 and the opposite square corner 25 form accurate positioning and limiting for the whole first connection piece 3, and the first connection piece 3 is effectively prevented from shaking left and right or front and back in the first groove 21, thereby facilitating subsequent welding connection.

Optionally, as shown in fig. 2, the square corner 25 in the second groove 22 is far away from the second slot 24, so that the second slot 24 and the opposite square corner 25 form accurate positioning and limiting for the whole second connecting sheet 4, and the second connecting sheet 4 is effectively prevented from shaking left and right or front and back in the second groove 22, thereby facilitating subsequent welding connection.

Advantageously, the first groove 21 is a square groove and four square clamping corners 25 are formed on the periphery, and the first clamping groove 23 is communicated with the first groove 21 through a notch on one edge of the outermost side of the first groove 21, so that the first assembling portion 31 is limited in the first groove 21 in all directions, and good limiting of all surfaces of the first assembling portion 31 is ensured. The second groove 22 is a square groove and four square clamping corners 25 are formed on the periphery of the second groove, and the second clamping groove 24 is communicated with the second groove 22 through a notch on one edge of the outermost side of the second groove 22, so that the second assembling portion 41 is limited in the second groove 22 in all directions, and good limitation of each surface of the second assembling portion 41 is guaranteed.

In addition, the connecting part of the two clamping edges matched with the square clamping corner 25 is provided with a round chamfer, so that the plastic is prevented from being clamped or scratched when the first assembling part 31 is assembled to the second groove 22 through the first groove 21 and the second assembling part 41, and convenience is provided for subsequent welding.

Alternatively, as shown in fig. 2 and 3, the first transition portion 32 and the second transition portion 42 each have a certain curvature, a portion of the first transition portion 32 connected to the first fitting portion 31 is provided in the first groove 21, and a portion of the second transition portion 42 connected to the second fitting portion 41 is provided in the second groove 22. That is to say, first transition portion 32 and second transition portion 42 are all partial joint in the draw-in groove, when accomplishing the location, can also make assembly portion and transition portion smooth connection, reduce the difficult degree of counterpointing during the assembly.

Optionally, as shown in fig. 4, intersecting lines formed by the tangent planes of the two side ends of the first transition portion 32, which are respectively connected with the first assembling portion 31 and the first pin 33, are located in the first slot 23, so that the radian of the first transition portion 32 is relatively gentle, the internal resistance is relatively small when the power is turned on, and both end surfaces of the first transition portion 32, the first groove 21 and the first slot 23 form reliable limiting.

Optionally, as shown in fig. 4, intersecting lines formed by the tangent planes of the two side ends of the second transition portion 42 connected to the second assembling portion 41 and the second pin 43 are located in the second slot 24, so as to ensure that the radian of the second transition portion 42 is relatively gentle, the internal resistance is relatively small after power is turned on, and both end faces of the second transition portion 42 form reliable limiting with the second groove 22 and the second slot 24.

Advantageously, as shown in fig. 4, the first transition 32 and the second transition 42 are each bent at 90 degrees. The bending angle of 90 degrees enables the first assembly part 31 connected with one end of the first transition part 32 to be in a horizontal plane and the first pin 33 connected with the other end of the first transition part 32 to be extended in a vertical plane when the first transition part 32 and the first assembly part 31 are assembled in place; the bending angle of 90 degrees also makes the second assembly portion 41 connected with one end of the second transition portion 42 extend in a horizontal plane and the second pin 43 connected with the other end of the second transition portion 32 extend in a vertical plane when the second transition portion 42 and the second assembly portion 41 are assembled in place.

Optionally, as shown in fig. 3, a neck-down 321 is formed at the junction of the first transition part 32 and the first pin 33, and a fusing opening 421 is formed at the junction of the second transition part 42 and the second pin 43, so that when the full tab battery 1000 is short-circuited, a weak point with the neck-down 321 or a weak point with the fusing opening 421 can be preferentially fused and prevented from being exploded due to further short-circuiting inside the battery cell 200, thereby improving the safety performance of the full tab battery 1000.

Optionally, there is one first lead 33 and one second lead 43, and the first lead 33 and the second lead 43 are respectively connected to pole pieces with different polarities.

Optionally, as shown in fig. 2, the first pins 33 are multiple, the first support pins 34 are connected between the multiple first pins 33, each first pin 33 is connected to a pole piece with the same polarity, and the first support pins 34 can ensure the stability of the distance between the multiple first pins 33, effectively prevent the multiple first pins 33 from shaking, and enable one poles of the multiple battery cells 200 to be connected in parallel; the second pins 43 are multiple, the second supporting legs 44 are connected between the second pins 43, each second pin 43 is connected with a pole piece with the same polarity, the second supporting legs 44 can ensure the stability of the distance between the second pins 43, the second pins 43 are effectively prevented from shaking, and the other poles of the battery cells 200 are connected in parallel.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In some specific examples, the first pins 33 and the second pins 43 are two, the two first pins 33 are arranged in parallel, and the first supporting pins 34 are connected to the surfaces of the two first pins 33 facing each other; the two second pins 43 are arranged in parallel, and the surfaces of the two second pins 43 facing each other are connected with second supporting feet 44.

In some embodiments of the present invention, as shown in fig. 4, the full tab top cover assembly 100 further includes a positive post 52 and a negative post 51, as shown in fig. 5, the top cover plate 1 is provided with a first assembly hole 111 and a second assembly hole 121 penetrating in the thickness direction; referring to fig. 2, 3, 4 and 5, a first through hole 211 (the first through hole 211 is shown in fig. 3) is opened on the lower plastic 2 facing the first assembly hole 111, a first mating hole 311 (the first mating hole 311 is shown in fig. 2) is opened on the first connection plate 3 facing the first assembly hole 111, the negative pole 51 sequentially passes through the first mating hole 311, the first through hole 211 and the first assembly hole 111, and the bottom of the negative pole 51 is clamped in the first mating hole 311.

The lower plastic 2 is provided with a second through hole 221 facing the second assembly hole 121 (the second through hole 221 is shown in fig. 3), the second connecting piece 4 is provided with a second matching hole 411 facing the second assembly hole 121 (the second matching hole 411 is shown in fig. 2), the positive post 52 sequentially passes through the second matching hole 411, the second through hole 221 and the second assembly hole 121, and the bottom of the positive post 52 is clamped in the second matching hole 411. Therefore, the negative pole 51 can be assembled on the first connecting piece 3, the lower plastic 2 and the top cover piece 1 at the same time, so that the negative pole 51 is electrically connected with the first connecting piece 3, and the negative pole 51 is not easy to shake after being assembled because the position between the lower plastic 2 and the first connecting piece 3 is relatively stable; correspondingly, the positive post 52 can be assembled on the second connecting piece 4, the lower plastic 2 and the top cover plate 1 at the same time, so that the positive post 52 is electrically connected with the second connecting piece 4, and the positive post 52 is not easy to shake after being assembled because the position between the lower plastic 2 and the second connecting piece 4 is relatively stable.

Optionally, the first connecting piece 3 and the second connecting piece 4 are both metal hard connecting pieces. For example, in some examples, the first connection tab 3 is a copper-brazed connection and the second connection tab 4 is an aluminum-brazed connection. The connection strength is guaranteed, the conductive performance of the first connecting sheet 3 and the second connecting sheet 4 is good, the positive pole 52, the second connecting sheet 4 and the second connecting portion 220 are directly connected, the negative pole 51, the first connecting sheet 3 and the first connecting portion 210 are directly connected, and the physical resistance inside the battery is reduced.

Alternatively, as shown in fig. 2, the inner wall of the first fitting hole 311 extends radially inward to form a first fitting table 312, as shown in fig. 4, the bottom of the negative pole 51 forms a first boss 511 and a second boss 512 which are arranged in a step shape, the first boss 511 is in contact fit with the bottom surface of the first fitting table 312, and the side surface of the second boss 512 is in fit with the side surface of the first fitting table 312. The bottom of negative pole post 51 sets up the form of multistage boss, can effectively increase negative pole post 51 and the cooperation area of contact of first assembly portion 31 to promote assembly stability.

Optionally, as shown in fig. 4, the first sealing ring 71 is sleeved on the negative post 51, the second sealing ring 72 is sleeved on the positive post 52, the first upper plastic 81 is connected to the top of the top cover plate 1, the first upper plastic 81 is provided with a negative post matching hole just facing the first assembling hole 111, the top of the negative post 51 is matched in the negative post matching hole, the top of the first sealing ring 71 abuts against the negative post matching hole, the lower portion of the first sealing ring 71 extends out of the first through hole 211, and the bottom of the first sealing ring 71 abuts against the first connecting piece 3. The first sealing ring 71 is arranged to improve the sealing performance at the position of the negative pole column 51 and prevent the electrolyte from leaking; the second aspect electrically insulates between the negative electrode post 51 and the top lid sheet 1; the third aspect improves the stability of the matching of the negative pole column 51 with the top cover sheet 1, the lower plastic 2 and the first connecting sheet 3.

Alternatively, as shown in fig. 2, the inner wall of the second fitting hole 411 extends radially inward to form a second fitting table 412, as shown in fig. 4, the bottom of the positive post 52 forms a third boss 521 and a fourth boss 522 which are arranged in a stepped manner, the third boss 521 is in contact fit with the bottom surface of the second fitting table 412, and the side surface of the fourth boss 522 is in fit with the side surface of the second fitting table 412. The bottom of the positive post 52 is provided with a multi-stage boss, so that the matching contact area of the positive post 52 and the second assembling portion 32 can be effectively increased, and the assembling stability is improved.

Optionally, as shown in fig. 4, the second upper plastic 82 is connected to the top of the top cover plate 1, a positive post mating hole is opened on the second upper plastic 82 and right opposite to the second assembly hole 121, the top of the positive post 52 is mated in the positive post mating hole, the top of the second sealing ring 72 abuts against the positive post mating hole, the lower portion of the second sealing ring 72 extends out of the second via hole 221, and the bottom of the second sealing ring 72 abuts against the second connecting plate 4. The sealing performance of the positive pole column 52 is improved by arranging the second sealing ring 72, so that the electrolyte is prevented from leaking; the second aspect electrically insulates the positive post 52 from the top cover sheet 1; the third aspect promotes the stability of the positive post 52, the top cover plate 1, the lower plastic 2 and the second connecting piece 4.

In the description of the invention, features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include one or more of the features for distinguishing between the described features, whether sequential or not.

Optionally, as shown in fig. 3, the top of the top cover plate 1 sinks towards one side of the lower plastic 2 to form a first positioning sinking groove 15 and a second positioning sinking groove 16, the first positioning sinking groove 15 is connected with a first upper plastic 81 in a positioning manner, and the second positioning sinking groove 16 is connected with a second upper plastic 82 in a positioning manner.

As shown in fig. 4, the first upper plastic 81 is connected with a negative riveting block 91, and the top of the negative post 51 is electrically connected with the negative riveting block 91; the second upper plastic 82 is connected with a positive pole riveting block 92, and the top of the positive pole column 52 is electrically connected with the positive pole riveting block 92.

Alternatively, as shown in fig. 2, a first sinking platform 11 and a second sinking platform 12 are provided on the top cover plate 1 in a downward protruding manner, as shown in fig. 5, a first assembly hole 111 is provided on the top cover plate 1 through the first sinking platform 11, and a second assembly hole 121 is provided on the top cover plate 1 through the second sinking platform 12. As shown in fig. 3, a first sinking groove 26 and a second sinking groove 27 are concavely arranged on the top of the lower plastic 2 in a direction away from the top cover plate 1, the first sinking groove 26 is in limit connection with the first sinking platform 11, and the second sinking groove 27 is in limit connection with the second sinking platform 12. Through the spacing connection of first heavy platform 11 in first heavy groove 26, the heavy platform 12 of second is spacing to be connected in the heavy groove 27 of second to form the quick location assembly of top cap piece 1 with lower plastic 2, and make the holistic thickness of full utmost point ear top cap subassembly 100 thinner, alleviate the weight of full utmost point ear top cap subassembly 100, provide more spaces for arranging electric core 200, effectively improve full utmost point ear battery 1000's electric core capacity.

In some embodiments of the present invention, as shown in fig. 2, the full tab top cover assembly 100 further includes a roll-over valve 61, as shown in fig. 5, the first sinking platform 11 is provided with a roll-over hole 112 penetrating through in the thickness direction; as shown in fig. 2, 4 and 5, the roll-over valve 61 is installed in the roll-over hole 112. Referring to fig. 3 and 5, the first sinking groove 26 is provided with a turning through hole 261 corresponding to the turning hole 112, as shown in fig. 3, a portion of the first assembling portion 31 facing the turning through hole 261 is recessed to form a third sinking groove 313, and a plurality of vent holes 3131 are formed through the third sinking groove 313. Through installing upset valve 61 on first heavy platform 11, and lay the heavy groove 313 of third on first assembly portion 31 and supply upset valve 61 to have sufficient upset space and accomplish the upset when full utmost point ear battery 1000 internal pressure risees to a definite value, upset valve 61 butt after the upset is in the side of negative pole riveting piece 91, thereby form outer short circuit between the positive pole that makes full utmost point ear battery 1000 and the negative pole, make the battery inside have the heavy current to pass through in the twinkling of an eye, the heavy current produces a large amount of heats, fuse neck throat 321 of first connection piece 3 or the fusing 421 of second connection piece 4, reach the mesh of opening circuit, and then effectively prevent full utmost point ear battery 1000 from exploding, the security performance when having promoted full utmost point ear battery 1000 and using.

Alternatively, the vent holes 3131 are formed by a plurality of through holes with a circular cross section, and the plurality of through holes are uniformly distributed on the bottom surface of the third sinking groove 313, so that the overturning effectiveness of the overturning valve 61 is ensured while the strength of the first connecting piece 3 is not affected.

In some specific examples, seven circular through holes are included, wherein the center of one circular through hole is aligned with the center of the rollover valve 61 before rollover, the other six circular through holes are arranged around the center circular through hole, and the centers of the six circular through holes are equidistant from the center of the center circular through hole. So that all the ventilation holes 3131 formed by the circular through holes can correspond to the roll-over valve 61, and the roll-over valve 61 can receive impact forces in different directions.

Of course, the shape of the vent hole 3131 is not limited to the circular through hole, and may be a square hole or an irregular hole having a square cross section, which is not particularly limited herein.

In some embodiments of the present invention, full tab cap assembly 100 further comprises explosion proof valve 62 shown in fig. 2 and explosion proof sheet 63 shown in fig. 3, as shown in fig. 4, explosion proof sheet 63 is provided on the upper side of explosion proof valve 62.

As shown in fig. 5, a third assembly hole 131 is formed in the top cover plate 1, as shown in fig. 2, the explosion-proof valve 62 is connected to the third assembly hole 131, as shown in fig. 3, a fourth sinking groove 28 is formed in the lower plastic, the depth of the fourth sinking groove 28 is greater than the depth of any one of the first sinking groove 26, the second sinking groove 27 and the third sinking groove 313, at least part of the fourth sinking groove 28 is formed right below the third assembly hole 131, and a plurality of pressure relief holes 281 are formed through the fourth sinking groove 28. When the inside atmospheric pressure of full utmost point ear battery 1000 is too high, the explosion-proof valve 63 can upwards be strikeed from pressure release hole 281 to the impact force of production, makes explosion-proof valve 63 explode to release the atmospheric pressure in with full utmost point ear top cap subassembly 100 through third pilot hole 131, effectively prevent full utmost point ear battery 1000 because of inside atmospheric pressure is too high and the explosion takes place, is equipped with the security performance height of the full utmost point ear battery 1000 of this application full utmost point ear top cap subassembly 100.

Optionally, as shown in fig. 2 and 4, the fourth heavy groove 28 is provided with a penetrating liquid injection via hole along the thickness direction, the top cover plate 1 is provided with a liquid injection interface 64 extending downward to the liquid injection via hole, the outer side wall of the liquid injection interface 64 abuts against the inner side wall of the liquid injection via hole, liquid is conveniently injected into the full-tab battery 1000, and the top cover 1 and the lower plastic 2 are further connected in a positioning manner.

Optionally, the top cover assembly 100 further comprises a top gasket, and one side of the explosion-proof sheet 63 protrudes outwards to form a stop sheet, and the stop sheet is stopped at the lower part of the top gasket.

A full lug cap assembly 100 in accordance with an embodiment of the present invention is described with reference to the accompanying drawings.

A full tab battery 1000 according to an embodiment of the present invention, as shown in fig. 7, includes: at least one battery cell 200, a casing 300 and a full tab cap assembly 100, wherein a fully assembled full tab battery 1000 may be illustrated with reference to fig. 6.

As shown in fig. 7 and 9, the pole pieces of different polarities of the battery cell 200 protrude from two sides of the battery cell 200, and a part of the protruding pole pieces are not coated with a coating layer, so as to facilitate connection between the first pins 33 and the second pins 43.

As shown in fig. 7, all the battery cells 200 are installed in the casing 300, and the casing 300 can effectively protect all the battery cells 200 and facilitate positioning and sealing of the battery cells 200 and the full tab top cover group 100.

As shown in fig. 7 and 8, the full tab cap assembly 100 is the aforementioned full tab cap assembly 100, as shown in fig. 6, the full tab cap assembly 100 is covered on the housing 300, and as shown in fig. 8, the first pin 33 and the second pin 43 are electrically connected to two pole pieces with different polarities respectively.

As can be seen from the above structure, in the full tab battery 1000 according to the embodiment of the present invention, after the full tab cap assembly 100 is assembled on the housing 300 and electrically connected to the battery cell 200, the first pin 33 is electrically connected to the first connection portion 210 extending from the negative plate of the battery cell 200, the second pin 43 is electrically connected to the second connection portion 220 extending from the positive plate of the battery cell 200, and the full tab cap assembly 100 is fixedly connected to the top of the casing 300, because the first connection plate 3 with the first pin 33 and the lower plastic 2 have the unique positioning and assembling position, the first connection plate 3 and the lower plastic 2 do not shake after being installed, and further, the connection position of the first pin 33 and the first connection portion 210 is accurate, the gap is small, and the connection reliability is high; the second connecting sheet 4 of the second pin 43 and the lower plastic 2 also have unique positioning and assembling positions, the second connecting sheet 4 and the lower plastic 2 are not shaken after installation, and then the connecting position of the second pin 43 and the second connecting part 220 is accurate, the gap is small, and the connecting reliability is high, so that all parts of the assembled full-tab battery 1000 are stably connected, the working performance of the battery is excellent, the overall assembling process is high in precision, and the assembly is convenient and rapid.

Optionally, as shown in fig. 7, a top opening 310 is formed in the top of the casing 300, the battery cell 200 is placed into the casing 300 from the top opening 310, as shown in fig. 9, pole pieces extending from two sides of the battery cell 200 are abutted against the inner side surface of the casing 300, and the first pin 33 is inserted into and welded to the first connection portion 210; the second pin 43 is plugged and soldered to the second connection portion 220.

Optionally, as shown in fig. 9 and fig. 10, two battery cells 200 are disposed in the housing 300, each of the two battery cells 200 has a first connection portion 210 and a second connection portion 220 extending to two sides, the two first connection portions 210 are arranged in parallel, the two second connection portions 220 are arranged in parallel, a first support leg 34 is connected between two first pins 33 on the first connection sheet 3, and two side surfaces of the first support leg 34 abut against two opposite side surfaces of the two first connection portions 210. Stability and the precision of location when first connection piece 3 is connected with electric core 200 have greatly been promoted.

The connection relationship between the second pins 43, the second supporting legs 44 and the second connecting portions 220 is similar to the connection relationship between the first pins 33, the first supporting legs 34 and the first connecting portions 210, and is not described herein again.

Optionally, the outer part of the case 300 is coated with a coating film to improve the sealing performance, the scratch resistance, and the like of the full tab battery 1000.

Alternatively, the full tab battery 1000 is a prismatic battery.

Specific structures of the full tab cap assembly 100 and the full tab battery 1000 according to the embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be all embodiments obtained by combining the foregoing technical solutions, and are not limited to the following specific embodiments, which fall within the scope of the present invention.

Example 1

A full tab header assembly 100, as shown in fig. 1, comprising: top flap 1, lower plastic 2, first connection piece 3 and second connection piece 4.

Wherein, as shown in fig. 1 and 2, the lower plastic 2 is matched with the bottom of the top cover sheet 1.

As shown in fig. 2, the bottom of the lower plastic 2 is provided with a first groove 21 and a second groove 22 which are recessed upwards in a direction towards the top cover plate 1, and the first groove 21 and the second groove 22 are respectively arranged at two sides of the lower plastic 2 in the length direction at intervals. Continuing to refer to fig. 2, a first slot 23 is formed on a slot wall of one side of the first groove 21 away from the second groove 22, and the first slot 23 is communicated with the first groove 21; a second clamping groove 24 is formed in the groove wall of one side, away from the first groove 21, of the second groove 22, and the second clamping groove 24 is communicated with the second groove 22.

Furthermore, as shown in fig. 2, the first connecting sheet 3 includes a first assembling portion 31, a first transition portion 32 and a first pin 33 which are smoothly connected in sequence, the first assembling portion 31 is clamped in the first groove 21, the first transition portion 32 is clamped in the first clamping groove 23, the first pin 33 extends downwards in a direction away from the top cover plate 1, the first pin 33 includes two parallel pins, and a first supporting pin 34 is connected between the two first pins 33.

Correspondingly, as shown in fig. 2, the second connecting piece 4 includes a second assembling portion 41, a second transition portion 42 and a second pin 43 which are smoothly connected in sequence, the second assembling portion 41 is clamped in the second groove 22, the second transition portion 42 is clamped in the second clamping groove 24, and the second pin 43 protrudes downward in a direction away from the top cover sheet 1. The second legs 43 include two legs arranged in parallel, and a second supporting leg 44 is connected between the two legs.

Example 2

An all tab battery 1000 comprising: two battery cells 200, a casing 300 and a full tab cap assembly 100, wherein a fully assembled full tab battery 1000 can be seen with reference to fig. 6.

As shown in fig. 7, two battery cells 200 are housed in the case 300.

As shown in fig. 7 and 9, pole pieces of different polarities of the battery cell 200 protrude from both sides of the battery cell 200, and a partial region of the protruding pole pieces is uncoated, an uncoated region of the protruding negative pole piece is formed as a first connection portion 210, and an uncoated region of the protruding positive pole piece is formed as a second connection portion 220.

As shown in fig. 7 and 8, the full tab header assembly 100 is the full tab header assembly 100 in embodiment 1, as shown in fig. 6, the full tab header assembly 100 is covered on the housing 300, as shown in fig. 8, the two first pins 33 are connected to the two first connecting portions 210 on the same side, and two side surfaces of the first supporting legs 34 abut against two opposite side surfaces of the two first connecting portions 210; the two second pins 43 are connected to the two second connecting portions 220 on the same side, and two side surfaces of the second supporting leg 44 abut against two opposite side surfaces of the two second connecting portions 220.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Two first pins 33 and two second pins 43 are shown in fig. 3 for illustrative purposes, but it is obvious to those skilled in the art after reading the above technical solutions that the solution can be applied to one or more first pins 33 and second pins 43, and the invention also falls into the protection scope of the present invention.

The sealing and operating principles of the all-tab cap assembly 100 and other components of the all-tab battery 1000, such as the all-tab battery 1000, according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A full tab header assembly, comprising:

a top cover sheet;

the lower plastic is matched with the bottom of the top cover plate, a first groove and a second groove which are recessed upwards are formed in the bottom of the lower plastic in the direction towards the top cover plate, and the first groove and the second groove are respectively formed in the two sides of the lower plastic in the length direction at intervals; a first clamping groove is formed in the groove wall of one side, away from the second groove, of the first groove, and the first clamping groove is communicated with the first groove; a second clamping groove is formed in the groove wall of one side, away from the first groove, of the second groove and is communicated with the second groove;

the first connecting piece comprises a first assembling portion, a first transition portion and a first pin which are connected smoothly in sequence, the first assembling portion is clamped in the first groove, the first transition portion is clamped in the first clamping groove, and the first pin extends downwards in the direction far away from the top cover plate;

the second connecting piece comprises a second assembling portion, a second transition portion and a second pin which are sequentially and smoothly connected, the second assembling portion is clamped in the second groove, the second transition portion is clamped in the second clamping groove, and the second pin extends downwards towards the direction far away from the top cover plate.

2. The full tab header assembly of claim 1 wherein the first and second recesses each have at least one square detent therein, the first and second mounting portions each having a detent edge bounded by the detent; the square clamping angle is far away from the first clamping groove or the second clamping groove.

3. The full tab header assembly of claim 1 wherein the first transition portion and the second transition portion each have a curvature, the portion of the first transition portion connected to the first mounting portion being disposed in the first recess and the portion of the second transition portion connected to the second mounting portion being disposed in the second recess.

4. The full tab header assembly of claim 3 wherein the first transition portion is located in the first slot at an intersection line formed by the tangent planes of the two side ends of the first assembly portion and the first pin respectively;

and the second transition part is positioned in the second clamping groove along an intersection line formed by the tangent planes of the two side ends of the second transition part, which are connected with the second assembly part and the second pin respectively.

5. The full tab header assembly of claim 3 wherein the first transition portion and the second transition portion are each bent at a 90 degree angle.

6. The full-tab top cover assembly according to any one of claims 1 to 5, further comprising a positive post and a negative post, wherein the top cover plate is provided with a first assembly hole and a second assembly hole penetrating through the top cover plate along the thickness direction, the lower plastic is provided with a first via hole facing the first assembly hole, the first connecting plate is provided with a first fitting hole facing the first assembly hole, the negative post sequentially passes through the first fitting hole, the first via hole and the first assembly hole, and the bottom of the negative post is clamped in the first fitting hole;

the lower plastic is right opposite to a second assembling hole, a second through hole is formed in the second assembling hole, a second matching hole is formed in the second connecting piece right opposite to the second assembling hole, the positive pole sequentially penetrates through the second matching hole, the second through hole and the second assembling hole, and the bottom of the positive pole is clamped in the second matching hole.

7. The full-tab top cover assembly according to claim 6, wherein the inner wall of the first fitting hole extends radially inward to form a first fitting table, the bottom of the negative pole column forms a first boss and a second boss which are arranged in a step shape, the first boss is in contact fit with the bottom surface of the first fitting table, and the side surface of the second boss is in fit with the side surface of the first fitting table;

the inner wall of the second matching hole extends inwards along the radial direction to form a second matching platform, a third boss and a fourth boss which are arranged in a step shape are formed at the bottom of the positive pole, the third boss is in contact fit with the bottom surface of the second matching platform, and the side surface of the fourth boss is matched with the side surface of the second matching platform.

8. The full tab top cap assembly according to claim 6, wherein the top cap sheet is provided with a first sinking platform and a second sinking platform in a downward protruding manner, the top cap sheet is provided with the first assembling hole through the first sinking platform, and the top cap sheet is provided with the second assembling hole through the second sinking platform; the top of lower plastic is towards keeping away from the recessed first heavy groove and the heavy groove of second that is equipped with of direction of top cover plate, first heavy groove with first heavy spacing connection of platform, the heavy groove of second with the heavy spacing connection of platform of second.

9. The full tab header assembly of any one of claims 1-5 wherein the first leg comprises at least one, and when the first leg is multiple, a first support leg is connected between multiple first legs;

the second pin comprises at least one, and when the second pins are multiple, second supporting legs are connected among the multiple second pins.

10. An all-tab battery, comprising:

the electrode plates with different polarities of the battery cell extend out of two sides of the battery cell;

the shell is internally provided with all the battery cells;

the full lug top cover assembly is the full lug top cover assembly according to any one of claims 1-9, the full lug top cover assembly covers the shell, and the first pin and the second pin are respectively electrically connected with the pole pieces with two different polarities.

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