CN218731656U

CN218731656U - Double leading-out terminal energy sheet structure

Info

Publication number: CN218731656U
Application number: CN202222856810.XU
Authority: CN
Inventors: 孙玉平; 车玲娟; 闫坤; 孙伟; 王俊华
Original assignee: Gmcc Electronic Technology Wuxi Co ltd
Current assignee: Gmcc Electronic Technology Wuxi Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-24
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a double leading-out terminal energy piece and energy piece module, a plurality of positive plates and negative plates are arranged in the energy piece bottom shell in a staggered and laminated mode, the positive plates and the negative plates are outwards deviated towards opposite two sides, the deviated parts of the positive plates form positive connection parts, and the deviated parts of the negative plates form negative connection parts; connecting pieces are respectively arranged on the bottom shell and the cover plate and are connected with the anode connecting part and the cathode connecting part. The utility model discloses an anodal piece and negative pole piece outwards squint to arranging to relative both sides, squint out the position separately and directly constitute the connection position, carry out the electrical property intercommunication with the connection piece, have wideer electric current flow area, and transmission of electricity performance is better, has reduced the requirement to utmost point piece mold processing, reduces the processing cost.

Description

Double leading-out terminal energy sheet structure

Technical Field

The utility model belongs to the technical field of the energy battery technique and specifically relates to a two leading-out terminal energy piece structures.

Background

With the development of new energy technology, power batteries become more and more important in daily life of people. The flat plate type energy sheet is used as one of power batteries, and has the advantages of small volume, high energy density, long service life, environmental friendliness and the like, so that the flat plate type energy sheet is widely applied to various industries such as vehicles, electronic products, energy storage systems, transportation, smart power grids, industrial energy conservation and consumption reduction and the like.

As shown in fig. 1, a conventional energy sheet structure is provided, in which a plurality of positive plates 2 and negative plates 3 are alternately stacked in a housing 1, adjacent positive plates 2 and negative plates 3 are provided with separators for electrical isolation, a portion of one side edge of a positive plate 2 extends outward to form a positive tab 21, a portion of the same side edge of a negative plate 3 extends outward to form a negative tab 31, and the positive tab 21 and the negative tab 31 are located at different positions on the same side. An end cover 4 is arranged at the end part of the shell 1 on the same side with the pole lug, a positive terminal 41 and a negative terminal 42 are correspondingly arranged on the end cover 4, the positive pole lug 21 of the positive pole piece 2 is connected with the positive terminal 41, and the negative pole lug 31 of the negative pole piece 3 is connected with the negative terminal 42. Such an energy sheet structure has the following problems: (1) The positive plate 2 and the negative plate 3 are connected with corresponding electrode terminals through tabs for power transmission, the current flow areas of the tabs and the electrode terminals are small, and the power transmission performance is relatively poor; in addition, when the positive plate 2 and the negative plate 3 are processed, tabs need to be processed at the same time, the requirement on a die for processing the tabs is high, and the processing cost is high; (2) The positive terminal 41 and the negative terminal 42 of the energy sheet are led out from the same end of the shell 1, the energy sheets can only be stacked to form an energy sheet module, the energy sheet module only effectively utilizes the space in the stacking direction, the space utilization rate in the tiling direction is not high, the whole space utilization rate is low, and the energy density obtained in the limited space is low; (3) After the energy piece stack arrangement, through pin connection usually between each energy piece, the wiring harness of leading wire arranges a great deal of in a jumble, but also need reserve the space that is used for holding the pencil for the space volume of whole module is great, has great requirement to the installation space of module, and the reliability is poor moreover.

SUMMERY OF THE UTILITY MODEL

The applicant aims at the defects of the existing energy sheet, and provides a double leading-out terminal energy sheet structure with a reasonable structure, which has better power transmission performance, reduces the processing requirements, saves the processing cost, improves the space utilization rate, obtains higher energy density in a limited space, simplifies the structure and saves the space.

The utility model discloses the technical scheme who adopts as follows:

a double leading-out terminal energy piece structure is characterized in that a plurality of positive plates and negative plates are arranged in a bottom shell in a staggered and laminated mode, adjacent positive plates and negative plates are provided with diaphragms for electrical isolation, and a cover plate is arranged on the top surface of the bottom shell; the positive plate is provided with a positive electrode connecting part at one side, and the negative plate is provided with a negative electrode connecting part at the opposite side; connecting sheets are respectively arranged on the bottom shell and the cover plate, the connecting sheets of the bottom shell and the connecting sheets of the cover plate are positioned on two opposite sides, the connecting sheets of the bottom shell are connected with one of the positive electrode connecting part and the negative electrode connecting part, and the connecting sheets of the cover plate are connected with the other one of the positive electrode connecting part and the negative electrode connecting part; the bottom shell is provided with a through lower guide hole, and the cover plate is correspondingly provided with a through upper guide hole.

As a further improvement of the above technical solution:

the connecting pieces on the two sides are provided with a layer-stacked butt joint part on the outer side surface of the bottom plate of the bottom shell or the outer side surface of the cover plate, and a tiled butt joint part is formed on the outer side surfaces of the two opposite side plates of the bottom shell.

The connecting sheet comprises a connecting bottom sheet and a plurality of bending sheets, the connecting bottom sheet comprises a plurality of low concave parts and high convex parts which are alternately arranged, and one side edge of each low concave part is bent to form one bending sheet; the low concave part protrudes on the outer side surface of the bottom plate or the outer side surface of the cover plate of the bottom shell to form a laminated butt joint part, and the bending pieces protrude on the outer side surface of the side plate of the bottom shell to form a flat butt joint part.

A first through hole is formed between the connecting parts of the low concave part and the high convex part, a second through hole is formed on the high convex part, and a third through hole is formed on the bent piece; the connecting sheet is integrally formed on the bottom shell or the cover plate in an encapsulation mode, after the connecting sheet is formed, a first positioning column and a second positioning column are formed on the bottom shell or the cover plate corresponding to the first through hole and the second through hole respectively, and a third positioning column is formed on the bottom shell corresponding to the third through hole.

The distance between the bottom surface of the low concave part and the top surface of the high convex part is larger than the thickness of the surface of the bottom plate or the cover plate of the bottom shell, and the high convex part is protruded on the inner side surface of the bottom plate or the inner side surface of the cover plate of the bottom shell.

The connecting sheet is provided with a plurality of mounting positions, and the positive plate or the negative plate is fixedly connected to the mounting positions through connecting rivets or hollow rivets respectively.

A lower bulge is arranged on the outer side surface of the bottom shell bottom plate and the other side part opposite to the connecting sheet on the bottom shell bottom plate; an upper bulge is arranged on the outer side surface of the cover plate and the other side part opposite to the connecting sheet on the cover plate; the height of the lower bulge and the upper bulge is equivalent to the height of the connecting sheet on the bottom plate or the cover plate of the bottom shell.

The lower bulge and the upper bulge are surface bulges, or a plurality of convex points, or raised characters or letters.

A plurality of lower slots are formed in the side plate on the side, corresponding to the connecting piece of the bottom shell and the cover plate, and the bending pieces of the connecting piece of the cover plate are inserted into the lower slots.

The bottom shell is provided with a plurality of guide platforms, and the lower guide holes are formed in the guide platforms.

The utility model has the advantages as follows:

(1) The positive plate and the negative plate of the utility model are arranged in an outward offset way towards two opposite sides, the separately offset parts replace the lugs in the prior art, directly form the connection parts and are electrically communicated with the connecting sheet, the offset parts are part of the pole pieces, the width of the offset parts is equivalent to that of the pole pieces, and compared with the lugs in the prior art, the positive plate and the negative plate have wider current circulation area and better transmission performance; the pole pieces directly form a connecting part through deviation, so that the design and processing of extra pole lugs are avoided, the requirement on a pole piece processing die is lowered, and the processing cost is lowered;

(2) The utility model discloses a positive terminal draws out from the free relative both ends of energy piece through the connection piece with the negative pole end, and can utilize simultaneously range upon range of to butt joint portion or tiling to butt joint portion, can constitute energy piece module through modes such as range upon range of or tiling or range upon range of tiling combination, the arrangement mode is more nimble, can effectively utilize space in the range upon range of side and the space in the range upon range of side simultaneously, has improved space utilization greatly, in effective space, can arrange more energy piece monomers, obtain higher energy density;

(3) The utility model discloses an energy piece monomer can range upon range of or the tiling is arranged, and the direct range upon range of through the connection piece can realize the electrical property intercommunication to butt joint portion or tiling to the butt joint portion laminating, more does benefit to the design of integrating to the module, reduces the space volume of module, reduces the requirement to the installation space of module, reduce cost, improvement reliability.

Drawings

Fig. 1 is an exploded view of an energy panel of a prior art construction.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a three-dimensional section view of the utility model.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an enlarged view of a portion B in fig. 3.

Fig. 6 is a perspective view of the connecting piece.

Fig. 7 is a front view of the present invention.

Fig. 8 is a cross-sectional view of section C-C in fig. 7.

Fig. 9 is an enlarged view of a portion D in fig. 8.

FIG. 10 is an enlarged view of section E in FIG. 8

FIG. 11 is a schematic structural diagram of another embodiment of a pole piece riveting and injection structure.

Fig. 12 is a schematic structural diagram of the energy sheet modules arranged in a stacked manner according to the present invention.

Fig. 13 is a schematic structural view of the energy sheet module of the present invention.

In the figure: 1. a housing; 2. a positive plate; 21. a positive tab; 3. a negative plate; 31. a negative tab; 4. an end cap; 41. a positive terminal; 42. a negative terminal;

5. a bottom case; 51. a guide mounting table; 52. a lower guide hole; 53. a lower slot; 54. a lower bulge; 55. a first positioning post; 56. a second positioning column; 57. a third positioning column; 6. a cover plate; 61. an upper guide hole; 62. an upper bulge; 7. connecting sheets; 71. connecting the bottom plates; 711. a low recess; 712. a high convex portion; 713. an installation position; 714. a first through hole; 715. a second through hole; 72. bending the sheet; 721. a third through hole; 8. connecting rivets; 9. a blind rivet; 91. a liquid injection hole; 10. hole sealing rivets;

100. an energy sheet monomer.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Energy sheet first embodiment:

as shown in fig. 2 to 5, the bottom shell 5 of the energy sheet unit 100 is internally provided with a plurality of positive plates 2 and negative plates 3 in a staggered and stacked manner, the adjacent positive plates 2 and the adjacent negative plates 3 are provided with diaphragms for electrical isolation, and the top surface of the bottom shell 5 is provided with a cover plate 6 for sealing. The connection part of the positive electrode sheet 2 and the negative electrode sheet 3 is positioned at two opposite side parts, namely: one side edge of each positive plate 2 is outwards offset by a certain distance relative to the negative plate 3 to form a positive electrode connecting part, and the other side edge of each negative plate 3 is outwards offset by a certain distance relative to the positive plate 2 to form a negative electrode connecting part. A connecting sheet 7 is arranged at one side part of the bottom shell 5 relative to the negative electrode connecting part of the negative electrode sheet 3, and a connecting sheet 7 is arranged at the other side part of the cover plate 6 relative to the positive electrode connecting part of the positive electrode sheet 2; the positive electrode connecting parts of all the positive electrode plates 2 are connected and fixed to the connecting plates 7 on the corresponding sides through a plurality of connecting rivets 8, the negative electrode connecting parts of all the negative electrode plates 3 are also connected and fixed to the connecting plates 7 on the corresponding sides through a plurality of connecting rivets 8, and the negative electrode plates 3 of the positive electrode plates 2 are respectively and electrically communicated with the connecting plates 7 on the corresponding sides. Of course, in other embodiments, the connecting piece 7 of the bottom case 5 is communicated with the positive electrode piece 2, and the connecting piece 7 of the cover plate 6 is communicated with the negative electrode piece 3. The positive plate 2 and the negative plate 3 are arranged in an offset way relative to each other, the offset parts respectively replace lugs in the prior art, directly form a connecting part and are electrically communicated with the connecting plate 7, the offset parts are part of the pole pieces, and the width of the offset parts is equivalent to that of the pole pieces; and the pole piece directly constitutes the connection position through the skew, has avoided the design and the processing of extra utmost point ear, has reduced the requirement to the pole piece mold processing, reduces the processing cost.

As shown in fig. 6, the connecting sheet 7 includes a connecting bottom sheet 71 and a plurality of bending sheets 72 formed by bending the connecting bottom sheet 71 at 90 ° from one side edge. The connecting bottom plate 71 comprises a plurality of low concave parts 711 and high convex parts 712 which are alternately arranged along the length direction of the connecting bottom plate, the concave direction of the low concave parts 711 is opposite to the bending direction of the bending sheets 72, the convex direction of the high convex parts 712 is the same as the bending direction of the bending sheets 72, and the distance between the bottom surface of the low concave parts 711 and the top surface of the high convex parts 712 is larger than the plate surface thickness of the bottom plate or the cover plate 6 of the bottom shell 5; each low concave part 711 is convexly provided with an installation position 713 in the same direction with the bending sheet 72, and the installation positions 713 are used for connecting and installing the connecting rivets 8; a first through hole 714 is formed between the connecting portion of the low concave portion 711 and the high convex portion 712, and a second through hole 715 is formed on the high convex portion 712. The same side of each low recess 711 is bent to form a bending piece 72, and the bending piece 72 is provided with a third through hole 721.

As shown in fig. 7 to 10, the connecting sheet 7 is integrally molded on the bottom case 5 or the cover plate 6 by encapsulation, after the integral molding, the low concave portion 711 of the connecting sheet 7 protrudes on the outer side surface of the bottom plate of the bottom case 5 or the outer side surface of the cover plate 6 to form a stacking butt joint portion, and the high convex portion 712 protrudes on the inner side surface of the bottom plate of the bottom case 5 or the inner side surface of the cover plate 6; the bending pieces 72 on the connecting piece 7 of the bottom shell 5 are protruded on the outer side surface of the corresponding side plate of the bottom shell 5, the bending pieces 72 on the connecting piece 7 of the cover plate 6 are buckled on the outer side surface of the other side plate of the bottom shell 5, and the bending pieces 72 are flatly laid to the butt joint part. In the process of encapsulating and forming the connecting sheet 7 and the bottom shell 5 or the cover plate 6, during glue injection, glue solution can enter the first through hole 714, the second through hole 715 and/or the third through hole 721 of the connecting sheet 7, after the glue solution is solidified and formed, the positions of the bottom shell 5 or the cover plate 6 corresponding to the first through hole 714, the second through hole 715 and/or the third through hole 721 respectively form a first positioning column 55, a second positioning column 56 and/or a third positioning column 57, and each positioning column positions the connecting sheet 7, so that the position precision of the connecting sheet 7 is ensured, and the reliability of the connecting sheet 7 is improved.

As shown in fig. 2, 4 and 9, four corner portions of the bottom case 5 are respectively provided with a guide platform 51, and the guide platform 51 is provided with a penetrating lower guide hole 52; the cover plate 6 is correspondingly provided with a through upper guide hole 61; when the energy sheet module is assembled, the guide rods can directly penetrate through the lower guide holes 52 of the bottom shell 5 and the upper guide holes 61 of the cover plate 6 to connect the energy sheet units 100 together, so that the energy module is convenient to assemble.

As shown in fig. 2 and 4, a plurality of lower slots 53 are formed in the outer surface of the side plate of the bottom case 5 corresponding to the connecting pieces 7 on the cover plate 6 and corresponding to the plurality of bending pieces 72, and the bending pieces 72 of the connecting pieces 7 are inserted into the lower slots 53 for positioning and ensuring that the cover plate 6 is installed in place.

As shown in fig. 2 to 4, a lower protrusion 54 is provided on the outer side of the bottom plate of the bottom case 5 opposite to the connecting piece 7 thereon, and the protrusion height of the lower protrusion 54 is equivalent to the protrusion height of the connecting piece 7 on the bottom plate of the bottom case 5. The other side part of the outer side surface of the cover plate 6, which is opposite to the connecting piece 7 on the outer side surface, is provided with an upper bulge 62, and the height of the bulge of the upper bulge 62 is equivalent to the height of the bulge of the connecting piece 7 on the surface of the cover plate 6. The lower protrusions 54, the upper protrusions 62 and the connecting sheets 7 have the same protrusion height, and when the energy sheet units 100 are stacked, the lower protrusions 54/the upper protrusions 62 and the connecting sheets 7 can respectively support two ends of the energy sheet units 100, so that the energy sheet units 100 are kept horizontal and do not incline, and the electrical performance of the energy sheet units 100 is guaranteed. The lower projections 54 and the upper projections 62 may be surface projections, may be formed by a plurality of projections, or may be provided as raised letters or letters as needed, as long as the adjacent energy sheet units 100 can be supported.

In this embodiment, a liquid filling opening (not shown) may be formed in the cover plate 6, and when the liquid filling device is used, the liquid filling opening is sealed by a sealing member after the electrolyte is filled into the bottom case 5 through the liquid filling opening.

Energy sheet second embodiment:

as shown in fig. 11, the difference between this embodiment and the first embodiment is that the mounting position 713 on the connecting piece 7 of the cover plate 6 connects and fixes the positive plate 2 or the negative plate 3 through the hollow rivet 9, the central through hole of the hollow rivet 9 forms the liquid injection hole 91, and after the liquid injection is completed, the liquid injection hole 91 is sealed by the sealing rivet 10; by adopting the mode, the processing of the liquid injection port on the cover plate 6 is saved, the processing difficulty of the cover plate 6 is reduced, and the processing cost is saved.

Energy piece module embodiment:

as shown in fig. 12 and 13, the connecting sheet 7 has abutting portions formed in the laminated direction and the flat-laid direction of the energy sheet units 100, and the plurality of energy sheet units 100 may be abutted against the abutting portions by the lamination, connected in series, or connected in parallel to form an energy sheet module (fig. 12), or abutted against the abutting portions by the flat-laid direction, connected in series, or connected in parallel to form an energy sheet module (fig. 13).

The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.

Claims

1. The utility model provides a two leading-out terminal energy piece structures, crisscross range upon range of setting up a plurality of positive plates (2) and negative pole piece (3) in drain pan (5), adjacent positive plate (2) are equipped with the diaphragm with negative pole piece (3) and carry out the electrical isolation, its characterized in that: a cover plate (6) is arranged on the top surface of the bottom shell (5); the positive pole piece (2) is provided with a positive pole connecting part on one side, and the negative pole piece (3) is provided with a negative pole connecting part on the opposite side; connecting sheets (7) are respectively arranged on the bottom shell (5) and the cover plate (6), the connecting sheets (7) of the bottom shell (5) and the connecting sheets (7) of the cover plate (6) are positioned at two opposite sides, the connecting sheets (7) of the bottom shell (5) are connected with one of a positive electrode connecting part and a negative electrode connecting part, and the connecting sheets (7) of the cover plate (6) are connected with the other one of the positive electrode connecting part and the negative electrode connecting part; the bottom shell (5) is provided with a through lower guide hole (52), and the cover plate (6) is correspondingly provided with a through upper guide hole (61).

2. The dual pigtail terminal energy patch structure of claim 1 wherein: the connecting pieces (7) on the two sides are provided with a layer-stacked butt joint part on the outer side surface of the bottom plate of the bottom shell (5) or the outer side surface of the cover plate (6), and a flat butt joint part is formed on the outer side surfaces of the two opposite side plates of the bottom shell (5).

3. The dual pigtail terminal energy patch structure of claim 1 wherein: the connecting sheet (7) comprises a connecting bottom sheet (71) and a plurality of bending sheets (72), the connecting bottom sheet (71) comprises a plurality of alternately arranged low concave parts (711) and high convex parts (712), and one side edge of each low concave part (711) is bent to form one bending sheet (72); the low concave part (711) protrudes out of the outer side surface of the bottom plate of the bottom shell (5) or the outer side surface of the cover plate (6) to form a laminated butt joint part, and the bending piece (72) protrudes out of the outer side surface of the side plate of the bottom shell (5) to form a flat butt joint part.

4. The dual lead out terminal energy patch structure of claim 3 wherein: a first through hole (714) is formed between the connecting part of the low concave part (711) and the high convex part (712), a second through hole (715) is formed on the high convex part (712), and a third through hole (721) is formed on the bending sheet (72); the connecting sheet (7) is integrally formed on the bottom shell (5) or the cover plate (6) in an encapsulation mode, after the connecting sheet is formed, a first positioning column (55) and a second positioning column (56) are formed on the bottom shell (5) or the cover plate (6) corresponding to the first through hole (714) and the second through hole (715) respectively, and a third positioning column (57) is formed on the bottom shell (5) corresponding to the third through hole (721).

5. The dual pigtail terminal energy patch structure of claim 3 wherein: the distance between the bottom surface of the low concave part (711) and the top surface of the high convex part (712) is larger than the plate surface thickness of the bottom plate or the cover plate (6) of the bottom shell (5), and the high convex part (712) is protruded on the inner side surface of the bottom plate or the cover plate (6) of the bottom shell (5).

6. The dual pigtail terminal energy patch structure of claim 1 wherein: the connecting sheet (7) is provided with a plurality of mounting positions (713), and the positive plates (2) or the negative plates (3) are fixedly connected to the mounting positions (713) through connecting rivets (8) or hollow rivets (9).

7. The dual pigtail terminal energy patch structure of claim 1 wherein: a lower bulge (54) is arranged on the outer side surface of the bottom plate of the bottom shell (5) and the other side part opposite to the connecting sheet (7) on the outer side surface; an upper bulge (62) is arranged on the outer side surface of the cover plate (6) and the other side part opposite to the connecting sheet (7) on the cover plate; the height of the lower bulges (54) and the upper bulges (62) is equivalent to the height of the connecting sheet (7) on the bottom plate or the cover plate (6) of the bottom shell (5).

8. The dual pigtail terminal energy patch structure of claim 7 wherein: the lower bulges (54) and the upper bulges (62) are surface bulges, or a plurality of convex points, or raised characters or letters.

9. The dual pigtail terminal energy patch structure of claim 1 wherein: a plurality of lower slots (53) are arranged on the side plate of the bottom shell (5) corresponding to the connecting sheet (7) of the cover plate (6), and the bending sheets (72) of the connecting sheet (7) of the cover plate (6) are inserted in the lower slots (53).

10. The dual pigtail terminal energy patch structure of claim 1 wherein: the bottom shell (5) is provided with a plurality of guide platforms (51), and lower guide holes (52) are formed in the guide platforms (51).