CN211629205U

CN211629205U - Small-size soft-packaged electrical core modular structure

Info

Publication number: CN211629205U
Application number: CN201922046970.6U
Authority: CN
Inventors: 李晶; 王秦英
Original assignee: Anhui Lvwo Recycling Energy Technology Co Ltd
Current assignee: Anhui Lvwo Recycling Energy Technology Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-10-02
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a small-size soft-packaged electrical core modular structure, including a plurality of groups soft-packaged electrical core, it has utmost point ear to be provided with insulating piece and outer end integrated into one piece between the adjacent two sets of soft-packaged electrical core, it is cotton all to have placed the EVA bubble between a plurality of groups utmost point ear, the upper end of EVA foam is provided with the foraminiferous bubble of EVA cotton, a plurality of groups wearing groove has evenly been seted up on the foraminiferous bubble of EVA cotton, utmost point ear passes the wearing groove, the downthehole rectangular hole of a plurality of groups and utmost point ear corresponding has evenly been seted up to foraminiferous bubble of EVA cotton top, utmost point ear passes rectangular downthehole, the periphery of the junction of the soft-packaged electrical core of a plurality of groups evenly is provided with four group's. The utility model discloses to connect parallelly connected PCB and leg together, can attach the copper billet through the leg lock when having guaranteed to establish ties with other modules, strengthened electric connection stability.

Description

Small-size soft-packaged electrical core modular structure

Technical Field

The utility model relates to a laminate polymer battery PACK technical field specifically is a small-size laminate polymer battery cell modular structure.

Background

The soft package battery is another name of the polymer battery, and compared with the lithium ion battery, the soft package battery has the advantages of small volume, light weight, high specific energy, high safety, flexible design and the like. With the ever increasing energy density requirements, various manufacturers are working to improve their own product parameters, mainly along two half routes: one is to develop the anode material with high specific energy, the other is to improve the capacity of the battery monomer and reduce the proportion of the auxiliary structure such as the shell in the monomer. In addition, the other half is that the transformation type soft package battery is considered, so that a scientific research project can peep from the current mainstream battery factory actively taking over the direction of the national soft package battery. The soft package power battery (or soft package battery core) is structurally packaged by an aluminum plastic film, and the positive electrode and the negative electrode of the battery also adopt a battery tab structure, which is different from the conventional plastic shell and metal shell batteries.

However, the conventional pouch battery has the following problems in the grouping process: it is efficient in groups, hardly realize the modularization, the electricity is connected unstably simultaneously, and most soft package adopts soldering tin electricity to connect, both increases manufacturing cost, extravagant manpower again. For this reason, a corresponding technical scheme needs to be designed to solve the existing technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size soft-packaged electrical core modular structure has solved the problem that proposes in the background art, satisfies the in-service use demand.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a small-size soft-packaged electrical core modular structure, includes a plurality of groups soft-packaged electrical core, is provided with insulating piece and outer end integrated into one piece between adjacent two sets of soft-packaged electrical core and has utmost point ear, a plurality of groups it is cotton all to have placed the EVA bubble between the utmost point ear, the cotton upper end of EVA bubble is provided with the foraminiferous bubble of EVA cotton, a plurality of groups wearing groove have evenly been seted up on the foraminiferous bubble of EVA cotton, utmost point ear passes the wearing groove in, the foraminiferous cotton top of EVA is provided with the PCB board, evenly set up a plurality of groups and the corresponding rectangular hole of utmost point ear on the PCB board, utmost point ear passes rectangular downthehole, a plurality of groups the periphery of the junction of soft-packaged electrical core evenly is provided with four groups of epoxy curb plates.

As a preferred embodiment of the present invention, four sets of solder fillets are uniformly formed around the elongated hole, and four sets of solder fillets are welded to the corners of the PCB.

As a preferred embodiment of the utility model, the both sides in rectangular hole are provided with the spot welding steel sheet, spot welding steel sheet and PCB board integrated into one piece.

As an preferred embodiment of the present invention, the tab is attached to the inner wall of the elongated hole and fixed to the spot-welded steel plate by laser spot welding.

As an optimized implementation manner of the utility model, the socket that four groups of cooperation weld legs used has evenly been seted up on the epoxy roof, the weld leg setting is in the socket.

As a preferred embodiment of the utility model, the top surface EVA board sets up in four groups between the leg, the outer end lock of leg attaches the series connection and has the copper sheet.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the scheme combines the parallel PCB with the welding pins, ensures that the copper block can be locked and attached through the welding pins when the parallel PCB is connected with other modules in series, and enhances the electric connection stability; meanwhile, the PCB extends out to enable the four pins to be inserted into the side face to correspond to the epoxy board, the position of the PCB is fixed, the stability of electric connection between battery modules can be guaranteed, modular production of batteries can be achieved, operation is convenient, and production efficiency is greatly improved.

2. This scheme is with taking welding foot PCB board, and spot welding steel sheet is pasted on the surface, avoids artifical soldering tin rosin joint, takes man-hour scheduling problem.

Drawings

FIG. 1 is an exploded view of a soft pack module structure;

fig. 2 is a schematic diagram of the arrangement of the soft package cells;

FIG. 3 is a schematic diagram of a PCB structure with four solder tails;

FIG. 4 is a schematic view of the PCB being fixed to the side epoxy board;

FIG. 5 is a schematic diagram of the overall structure of the module;

FIG. 6 is a schematic diagram of a multi-module series configuration.

In the figure, 1-soft package battery cell, 2-insulating sheet, 3-tab, 4-EVA foam, 5-EVA foam with holes, 6-through slot, 7-PCB board, 8-strip hole, 9-epoxy side board, 10-epoxy top board, 11-top EVA board, 12-welding leg, 13-spot welding steel sheet, 14-socket and 15-copper sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a small-size soft-packaged electrical core modular structure, including a plurality of groups soft-packaged electrical core 1, it has utmost point ear 3 to be provided with insulating piece 2 and outer end integrated into one piece between adjacent two sets of soft-packaged electrical core 1, the cotton 4 of EVA bubble has all been placed between a plurality of groups utmost point ear 3, the upper end of the cotton 4 of EVA bubble is provided with the cotton 5 of the foraminiferous bubble of EVA, a plurality of groups wearing groove 6 have evenly been seted up on the cotton 5 of the foraminiferous bubble of EVA, utmost point ear 3 passes in the rectangular hole 8, utmost point ear 3 passes in the wearing groove 6, the cotton 5 top of the foraminiferous bubble of EVA is provided with PCB board 7, a plurality of groups and the corresponding rectangular hole 8 of utmost point ear 3 have evenly been seted up on PCB board 7, utmost point ear 3 passes rectangular hole 8, the periphery of the junction of a.

And (4) supplementary notes: the epoxy side plates 9 and the epoxy top plate 10 are made of epoxy resin materials.

In a further improvement, as shown in fig. 3: four groups of welding feet 12 are evenly distributed on the periphery of the long hole 8, and the four groups of welding feet 12 are welded at the corners of the PCB 7.

In a further improvement, as shown in fig. 3: the spot welding steel sheets 13 are arranged on two sides of the strip hole 8, the spot welding steel sheets 13 and the PCB 7 are integrally formed, the PCB 7 with the welding feet 12 is used, and the spot welding steel sheets 13 are attached to the surface of the PCB, so that the problems of manual soldering tin false welding, labor hour consumption and the like are solved.

Further improved, as shown in fig. 4: tab 3 is pasted on the inner wall of elongated hole 8 and fixed on spot welding steel sheet 13 through laser spot welding, avoids artifical soldering tin rosin joint, takes man-hour scheduling problem.

Further improved, as shown in fig. 1: four groups of sockets 14 matched with the welding feet 12 are uniformly arranged on the epoxy top plate 10, and the welding feet 12 are arranged in the sockets 14, so that the purpose of fixing the tops of the welding feet 12 is achieved.

Specifically, the top surface EVA board 11 is disposed between four sets of solder tails 12, the outer ends of the solder tails 12 are locked and connected in series with copper sheets 15, and the solder tails 12 of several sets of soft package battery cells 1 are connected through the copper sheets 15.

When in use: the structure module of the utility model is suitable for two or more than two battery structures, 0.2MM thick insulating sheet 2 is pasted between soft package battery cores 1, a plurality of groups of soft package battery cores 1 pasted with the insulating sheets 2 are fixed together by fiber adhesive tapes, EVA foam 4 is put into the position gap of the tab 3 of the adjacent soft package battery core 1, the through slot 6 of the EVA foam 5 with holes is inserted corresponding to the tab 3 of the soft package battery core 1, the EVA foam 5 with holes is fixed on the EVA foam 4 by passing through the soft package battery core 1, the welding pin 12 with the PCB 7 is put on the EVA foam 5 by passing through the tab 3, the tab 3 of the soft package battery core 1 is pasted on a spot welding steel plate 13 and is welded by a laser spot, finally, the outer side and the top of the whole module of the soft package battery core 1 are wrapped by an epoxy side plate 9 and an epoxy top plate 10, and the socket 14 of the epoxy top plate 10 is inserted corresponding to the welding pin 12, the welding pin 12 is exposed so as to be connected in series and parallel with other modules by, thereby completing the assembly.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a small-size soft-packaged electrical core modular structure, includes soft-packaged electrical core (1) of a plurality of groups, its characterized in that: an insulating sheet (2) is arranged between two adjacent groups of soft package battery cores (1), the outer ends of the soft package battery cores are integrally formed with lugs (3), EVA foam (4) is placed between the lugs (3), the upper end of the EVA foam (4) is provided with an EVA foam (5) with holes, a plurality of groups of through grooves (6) are uniformly arranged on the EVA porous foam (5), the pole ear (3) passes through the through groove (6), a PCB (7) is arranged above the EVA foam with holes (5), a plurality of groups of strip holes (8) corresponding to the lugs (3) are uniformly arranged on the PCB (7), the tabs (3) penetrate through the strip holes (8), four groups of epoxy side plates (9) are uniformly arranged on the periphery of the connection part of the soft package battery cells (1), the top of PCB board (7) covers there is epoxy roof (10), the middle part of epoxy roof (10) is provided with top surface EVA board (11).

2. The module structure of the small soft-package battery cell of claim 1, wherein: four groups of welding feet (12) are evenly distributed on the periphery of the long hole (8), and the four groups of welding feet (12) are welded at the corners of the PCB (7).

3. The module structure of the small soft-package battery cell of claim 2, wherein: the two sides of the strip hole (8) are provided with spot welding steel sheets (13), and the spot welding steel sheets (13) and the PCB (7) are integrally formed.

4. The small-sized soft-package battery cell module structure according to claim 3, characterized in that: and the tab (3) is attached to the inner wall of the strip hole (8) and fixed on the spot welding steel sheet (13) through laser spot welding.

5. The module structure of the small soft-package battery cell of claim 2, wherein: four groups of sockets (14) matched with the welding pins (12) for use are uniformly formed in the epoxy top plate (10), and the welding pins (12) are arranged in the sockets (14).

6. The small-sized soft-package battery cell module structure according to claim 5, wherein: the top surface EVA board (11) is arranged among the four groups of welding feet (12), and the outer ends of the welding feet (12) are locked and connected in series with copper sheets (15).