CN215933706U

CN215933706U - Bridge-spanning sealing structure of bipolar battery and bipolar battery

Info

Publication number: CN215933706U
Application number: CN202121708596.2U
Authority: CN
Inventors: 刘焯; 王超; 陈跃武; 向德波; 黄潇; 王起红
Original assignee: Tianneng Battery Group Co Ltd
Current assignee: Tianneng Battery Group Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-01
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a cross-bridge sealing structure which comprises a wave strip and a pressing block, wherein the wave strip is arranged in a battery jar partition wall and matched with a cross-bridge lug during sealing; the wave strip comprises a plurality of pressing blocks which are sequentially connected end to end through flexible connecting pieces, grooves for the cross-bridge lugs to extend into are formed in the pressing blocks matched with the cross-bridge lugs, through holes are formed in the centers of the pressing blocks, and the through holes in the pressing blocks are communicated with each other when the wave strip is in a folded state; also disclosed is a bipolar battery comprising the bridge-spanning sealing structure. The bridge-crossing sealing structure can effectively make the cell units independent and prevent the problems of gas leakage, liquid leakage, self-discharge of the cell and the like of the single cell.

Description

Bridge-spanning sealing structure of bipolar battery and bipolar battery

Technical Field

The utility model relates to the technical field of bipolar batteries, in particular to a bridge-spanning sealing structure of a bipolar battery and the bipolar battery.

Background

The lead-distributed horizontal bipolar battery is mainly represented by a product scheme of a collector Inc., a cold extrusion method is adopted, lead alloy is coated on the surface of glass fiber, a screen is woven after lead wires are manufactured, a lead-distributed grid is manufactured, one end of the lead cloth is coated with a positive electrode active substance, the other end of the lead cloth is coated with a negative electrode active substance, a double-electrode structure is adopted for series connection among unit battery units, the unit battery units are directly communicated through the lead screen, a connecting strip and a lug are omitted, and the horizontal lead-distributed bipolar battery is developed rapidly.

Although the horizontal lead-cloth bipolar battery has many advantages, the horizontal lead-cloth bipolar battery is not widely applied in the industry, the industrialization pace is slow, and the problems of the horizontal lead-cloth bipolar battery mainly appear in the product manufacturing process and the unit body sealing problem. Resulting in higher cost and insufficient technical advantages.

The patent specification with the publication number of CN110400975A discloses a horizontal lead storage battery, including battery jar and capping, the inside of battery jar is provided with separates into the baffle of a plurality of simple lattices with its inner chamber, is provided with the utmost point crowd that the level was placed in every simple lattice, and adjacent utmost point crowd passes through the gap bridge and connects, the baffle has the breach that supplies the gap bridge to pass through, and breach department is provided with seal assembly, seal assembly include two have the clearance and with the sealed complex closing plate of baffle, the clearance intussuseption is filled with sealed glue. In the above scheme, the sealing assembly has a simple structure, and cannot form an effective sealing space.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a bridge-spanning sealing structure of a bipolar battery, which can effectively separate battery units and prevent the problems of gas leakage, liquid leakage, self-discharge of the battery, etc.

A bridge-spanning sealing structure of a bipolar battery comprises a battery jar, wherein an inner cavity of the battery jar is divided into a plurality of single lattices by battery jar partition walls, each single lattice is internally provided with a pole group, polar plates of the pole groups are horizontally arranged, adjacent pole groups are connected in series through bridge-spanning lugs penetrating through the battery jar partition walls between the adjacent single lattices, the battery jar partition walls are provided with gaps for the bridge-spanning lugs to pass through, and the bridge-spanning sealing structure comprises a wave strip and a pressing block, wherein the wave strip is arranged in the battery jar partition walls in a sealing mode and matched with the bridge-spanning lugs, and the pressing block is used for pressing the wave strip;

the wave strip includes a plurality of briquetting that connect gradually end to end through flexonics spare, and the folding back card of each briquetting is gone into the breach, each briquetting of assembly back is along vertical stacking, with stride the recess that bridge utmost point ear stretched into of being provided with the confession on bridge utmost point ear complex briquetting, the center of briquetting is provided with the through-hole, and the through-hole of wave strip on each briquetting under fold condition is linked together and is formed vertical sealed gluey groove.

In this scheme, extrude the wave strip through the compact heap, make the wave strip and stride the effectual sealed parcel of bridge utmost point ear, make the wave strip closely cooperate with battery jar partition wall inner wall simultaneously to form an effectual interim glue storage space, for glue create an effectual, the sealed space that does not leak and glue, after glue pours into the glue into the sealed space in dry, can seal battery jar, lid, stride bridge utmost point ear and glue into a whole, so that the cell cube is effectively independent.

Preferably, the pressing block comprises a body, connecting lugs protrude from two sides of the body, and a slotted hole communicated with the through hole is formed in the center of the body.

Preferably, the through hole is located at the center of the pressing block.

Preferably, the material of the compact is hard rubber.

Preferably, the thickness of the flexible connecting piece is smaller than that of the pressing block. The flexible connecting piece is designed to be thin, so that the wave strip is a whole, the operation is efficient during bending, the installation is convenient, and the integrity is good.

It is another object of the present invention to provide a bipolar battery including the above-described bridge-spanning sealing structure.

The utility model has the beneficial effects that:

the sealing structure can create an effective space for temporary drying and curing of epoxy resin sealing of the bridge-spanning lug, glue does not leak within a specific time after the glue is injected into the space, 360-degree effective contact of the bridge-spanning lug with the glue can be guaranteed, the glue is effectively combined with the wall of the battery cell, complete independence of each unit body of the battery is effectively guaranteed, and the problems of gas leakage, liquid leakage, self-discharge of the battery and the like of a single body are solved.

Drawings

FIG. 1 is a schematic structural view of a wave bar in an unfolded state;

FIG. 2 is a schematic structural view of a folded state of the wave strip;

FIG. 3 is a partial top view of a battery well partition;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial top view of the present invention;

FIG. 6 is a sectional view taken along line B-B of FIG. 5;

FIG. 7 is a schematic structural view of a compact;

FIG. 8 is a front cross-sectional view of the compact;

fig. 9 is a schematic view of the mounting structure of the present invention.

Detailed Description

As shown in fig. 1 to 9, a bipolar battery comprises a battery container, an inner cavity of the battery container is divided into a plurality of single cells by a battery container partition wall 3, each single cell is provided with a polar group, polar plates of the polar groups are horizontally arranged, adjacent polar groups are connected in series through bridge-spanning lugs 4 passing through the battery container partition wall 3 between the adjacent single cells, the battery container partition wall 3 is provided with a notch for the bridge-spanning lugs 4 to pass through, and the bipolar battery is sealed particularly through a bridge-spanning sealing structure arranged in the notch of the battery container partition wall 3.

The bridge-spanning sealing structure specifically comprises a wave strip 1 and a pressing block 2, wherein the wave strip 1 is arranged in a gap of a battery jar partition wall 3 during sealing and is matched with a bridge-spanning lug 4.

Wave strip 1 includes a plurality of briquettings 11 that connect gradually end to end through flexible connection 12, and in this embodiment, the material of briquettings 11 is hard rubber, and flexible connection 12's thickness is less than the thickness of briquettings 11, and thin design for wave strip 1 is a whole, and the operation is high-efficient when bending, the installation of being convenient for, and the wholeness is good.

The pressing blocks 11 matched with the bridge-spanning lugs 4 are provided with grooves 111 into which the bridge-spanning lugs 4 extend, specifically, the pressing blocks 11 at two ends of the wave strip 1 are not provided with the grooves 111, the pressing block 11 in the middle is provided with the grooves 111, two adjacent pressing blocks 11 in the middle are combined, when the wave strip 1 is folded, the grooves 111 on the pressing blocks 11 in one combination are oppositely arranged, and the lugs 4 can be exactly and completely wrapped; the grooves 111 on adjacent pressing blocks 11 of adjacent combinations are arranged oppositely.

The center of briquetting 11 is provided with through-hole 112, makes things convenient for the infiltration of glue, and wave strip 1 is when folding, and through-hole 112 on each briquetting 11 is linked together and forms vertical sealed gluey groove.

In this embodiment, the pressing block 2 includes the body 21, and the protrusion of body 21 both sides has engaging lug 22, and engaging lug 22 specifically fixes on battery jar partition wall 3 through the bolt, revolves the wrong bolt, and pressing block 2 compresses wave strip 1 downwards, makes wave strip 1 and the effectual sealed parcel of bridge-spanning utmost point ear 4 to can make wave strip 1 and the 3 inner walls of battery jar partition wall closely cooperate. The body 21 is provided at the center thereof with a groove hole 211 communicating with the through hole 112 for a glue inlet, and the glue penetrates into the sealant groove along the groove hole 211.

The sealing process of the bridge-spanning sealing structure is as follows: arrange wave strip 1 in battery jar partition wall 3 and make in the bridge utmost point ear 4 stretches into wave strip 1's recess 111, at wave strip 1 top, installation compact heap 2, use bolt-up and wave strip 1 of downward compression, wave strip 1 will stride bridge utmost point ear 4 effectual sealed parcels under the pressure effect, glue and the bridge utmost point ear 4 of striding have been kept to wave strip 1 inside, the space that battery jar partition wall 3 combined, an effectual interim glue storage space promptly, dry back in glue injection confined space, can be with the battery jar, the lid, stride bridge utmost point ear glue and seal into a whole, make the cell cube effectively independent.

Claims

1. A bridge-spanning sealing structure of a bipolar battery comprises a battery jar, wherein an inner cavity of the battery jar is divided into a plurality of single lattices by battery jar partition walls, each single lattice is internally provided with a pole group, polar plates of the pole groups are horizontally arranged, adjacent pole groups are connected in series through bridge-spanning lugs penetrating through the battery jar partition walls between the adjacent single lattices, and the battery jar partition walls are provided with gaps for the bridge-spanning lugs to pass through;

2. The cross-bridge sealing structure of claim 1, wherein the pressing block comprises a body, connecting lugs protrude from two sides of the body, and a slot hole communicated with the through hole is formed in the center of the body.

3. The bridge-spanning sealing structure of claim 1, wherein the through hole is located at a central position of the pressing block.

4. The bridge-spanning sealing structure of claim 1, wherein the material of the compact is hard rubber.

5. The bridge-spanning sealing structure of claim 1, wherein a thickness of the flexible connector is less than a thickness of the pressure block.

6. A bipolar battery comprising the bridge-spanning sealing structure according to any one of claims 1 to 5.