CN210576062U

CN210576062U - Fixing device for soft package battery and parallel soft package battery structure

Info

Publication number: CN210576062U
Application number: CN201921233808.9U
Authority: CN
Inventors: 刘迎波; 邓阮明; 刘江; 蒋靑波
Original assignee: Meike New Energy Suzhou Co ltd
Current assignee: Meike New Energy Suzhou Co ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-19
Anticipated expiration: 2029-08-01

Abstract

The utility model provides a fixing device for laminate polymer battery, including fixed subassembly body, fixed subassembly body includes joint spare, connecting piece and separator, the joint spare includes the protruding and joint recess of a plurality of joint, laminate polymer battery install in the protruding, joint recess of joint and separator form the cavity, fixed subassembly body is fixed in laminate polymer battery in the cavity. The utility model discloses still relate to a parallel laminate polymer battery structure. The device is used for clamping and fixing two adjacent fixing assembly bodies through the clamping piece, the soft package battery is arranged in a cavity formed after the two adjacent fixing assembly bodies are clamped, and the positive and negative lugs of the soft package battery are positioned between the two adjacent fixing assembly bodies, so that the service life of the terminal is prevented from being shortened due to external force; in addition, the fixed assembly body also plays a role in heat insulation and insulation, and the impact resistance of the soft package battery is increased.

Description

Fixing device for soft package battery and parallel soft package battery structure

Technical Field

The utility model relates to a fixed laminate polymer battery field especially relates to a fixing device and parallel laminate polymer battery structure for laminate polymer battery.

Background

In recent years, pouch batteries have been widely used because of their advantages such as safety, energy consumption, light weight, large capacity, and small internal resistance. Several pouch cells are typically connected in series or parallel to increase their capacity during use.

However, the casing is soft, and particularly the positive and negative electrode ears of the soft package battery are easy to damage the service life of the image battery. In addition, the direct contact wrapping mode between batteries is poor in heat insulation, insulation and impact resistance, and in addition, the terminals are directly soldered at high temperature, so that PP glue is easily scalded, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a fixing device for laminate polymer battery. The utility model discloses a fixed subassembly body that joint spare, connecting piece and separator are constituteed makes laminate polymer battery's fixed above-mentioned problem of having avoided.

The utility model provides a fixing device for soft package battery, including the fixed subassembly body, the fixed subassembly body includes joint spare, connecting piece and separator, the joint spare is located the both sides of fixed subassembly body, the connecting piece is located the tip of fixed subassembly body, the connecting piece is connected respectively with the joint spare the edge of separator;

the joint spare includes protruding and the joint recess of a plurality of joint, adjacent two fixed subassembly body passes through the joint is protruding fixed with joint recess joint, laminate polymer battery install in the protruding, joint recess of joint and separator of joint form the cavity, fixed subassembly body is fixed in laminate polymer battery in the cavity.

Preferably, the cavity is larger than or equal to the volume of a single soft package battery, and the distance between two adjacent separators is larger than or equal to the thickness of the soft package battery.

Preferably, the fixing assembly body further comprises a first groove and a second groove, and the first groove and the second groove are respectively arranged on two sides of the isolating piece.

Preferably, the connecting piece includes first connecting piece and second connecting piece, first connecting piece and second connecting piece are located respectively the both ends of fixed subassembly body, first connecting piece includes a plurality of fixed orifices, first connecting piece or second connecting piece include a plurality of first through-hole.

Preferably, the width of the first connecting piece is smaller than that of the second connecting piece, and the second connecting piece, the isolating piece and the clamping piece form a rectangular structure.

Preferably, a plurality of strip-shaped bosses are arranged on the inner sides of the clamping protrusions.

A parallel soft package battery structure comprises a battery structure body, wherein the battery structure body comprises a plurality of fixing assembly bodies, a connecting copper bar, a battery cell terminal and a plurality of fasteners, the battery cell terminal is connected with positive and negative lugs of a soft package battery, and the battery cell terminal is fixedly arranged on the surface of the fixing assembly bodies through the fasteners;

the connecting copper bar is connected with the battery cell terminals through the fasteners, and the connecting copper bar is fixedly installed on the fixing component body through the fasteners and the battery cell terminals so that the soft package battery is fixedly installed in the fixing component body in a mutually clamped mode.

Preferably, the cell terminals include a first cell terminal and a second cell terminal, and the first cell terminal and the second cell terminal are respectively connected with a positive tab or a negative tab of the soft package battery;

the first battery cell terminal or the second battery cell terminal comprises a first connecting end, a second connecting end and a second through hole, the first connecting end and the second connecting end are respectively connected with positive lugs or negative lugs of two adjacent soft-package batteries, and the battery cell terminal is installed on the fixed assembly body through the second through hole by utilizing the fastener.

Preferably, the connecting copper bar comprises a first connecting copper bar and a second connecting copper bar, and the first connecting copper bar or the second connecting copper bar is respectively connected with a plurality of positive or negative battery cell terminals.

Preferably, the first connecting copper bar or the second connecting copper bar comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are integrally formed, and the first connecting part and the second connecting part are respectively installed on two adjacent surfaces of the first connecting piece; the first connecting part comprises a plurality of third through holes, and the fastener fixes the connecting copper bar on the first connecting piece through the third through holes; the second connecting portion include the delivery port that is used for exporting the anodal or negative pole of a plurality of laminate polymer battery.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a fixing device for laminate polymer battery, the device is fixed two adjacent fixed subassembly bodies joint through joint spare, installs laminate polymer battery in the cavity that forms behind two adjacent fixed subassembly bodies joint, laminate polymer battery's positive negative pole ear is located between two adjacent fixed subassembly bodies, has avoided the terminal to receive external force and has shortened its life; in addition, the fixed assembly body also plays a role in heat insulation and insulation, and the impact resistance of the soft package battery is increased.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of a fixing device for a soft package battery according to the present invention;

fig. 2 is a schematic structural view of the combination of two adjacent fixing component bodies of the present invention;

fig. 3 is a cross-sectional view of two adjacent securing assembly bodies of the present invention;

fig. 4 is a schematic view of the overall structure of a parallel type soft-package battery structure according to the present invention;

fig. 5 is a schematic structural diagram of the soft package battery of the present invention;

fig. 6 is a schematic structural view of two adjacent soft-package batteries and a fixed structure body in the present invention;

fig. 7 is a schematic structural view of an upper cover and a lower cover of a parallel type soft-package battery structure according to the present invention;

fig. 8 is a schematic structural diagram of a cell terminal of a parallel type soft-package battery structure according to the present invention;

fig. 9 is a schematic structural view of another cell terminal of a parallel type soft-package battery structure according to the present invention;

fig. 10 is a schematic structural view of a connecting copper bar of a parallel type soft-package battery structure according to the present invention;

reference numerals: 100. the battery structure body, 10, the fixed structure body, 110, the joint piece, 111, the joint is protruding, 1110, the strip boss, 112, the joint recess, 120, the separator, 121, the first recess, 122, the second recess, 131, the first connecting piece, 1311, the fixed orifices, 1312, the first protruding through-hole, 1313, the first sunken through-hole, 1314, the electrode sign, 132, the second connecting piece, 20, the laminate battery, 210, the negative pole ear, 220, the positive pole ear, 230, the double faced adhesive tape, 30, the electric core terminal, 310, the first electric core terminal, 320, the second electric core terminal, 330, the second through-hole, 40, the fastener, 50, the connection copper bar, 510, the first connection copper bar, 520, the second connection copper bar, 530, the third through-hole, 540, the output hole, 550, the first connection portion, 560, the second connection portion, 60, the upper and lower covers, 610, the fourth through-hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

A fixing device for a soft package battery, as shown in fig. 1-3, comprising a fixing assembly body 10, wherein the fixing assembly body 10 comprises a clamping member 110, a connecting member and a spacer member 120, the clamping member 110 is located at two sides of the fixing assembly body 10, the connecting member is located at the end of the fixing assembly body 10, and the connecting member and the clamping member 110 are respectively connected with the edge of the spacer member 120;

joint spare 110 includes protruding 111 of a plurality of joint and joint recess 112, adjacent two fixed subassembly body 10 passes through the protruding 111 of joint is fixed with joint recess 112 joint, laminate polymer battery install in the protruding 111 of joint, joint recess 112 and separator 120 formation cavity, fixed subassembly body 10 is fixed in laminate polymer battery in the cavity. In one embodiment, the adjacent fixing assembly bodies 10 are clamped and fixed by the clamping piece 110, so that the pouch battery is placed in a cavity formed by the clamping piece 110, the isolating piece 120 and the connecting piece, the impact resistance of the pouch battery is improved, and meanwhile, the heat insulation and insulation effects are achieved; in addition, the positive lug and the negative lug of the soft package battery are arranged between the two adjacent first connecting pieces, so that the terminal is prevented from being shortened in service life due to external force.

It should be noted that the spacer may be an integral sheet structure or a hollowed sheet structure.

Specifically, protruding 111 of joint sets up with joint recess 112 relatively and forms first joint group, first joint group is rotatory 180 forms second joint groups, first joint group sets up with second joint group is adjacent, joint spare 110 includes that the first joint of a plurality of is organized and second joint is organized. In this embodiment, as shown in fig. 1, the protruding 111 of joint sets up with joint recess 112 relatively from top to bottom, and adjacent setting is protruding 111 of joint about joint recess 112, and joint protruding 111 or joint recess 112 are left and right to be separated each other and are set up the more firm that makes two adjacent fixed subassembly bodies 10 joints, take place to warp when having avoided the battery package to receive external force and make laminate polymer battery damage. The volume of cavity is more than or equal to the volume of single laminate polymer battery, adjacent two distance more than or equal to laminate polymer battery's thickness between the separator 120. In this embodiment, the volume of the cavity that two adjacent fixed subassembly bodies 10 joint formed slightly is greater than single laminate polymer battery's volume, and it has the double faced adhesive tape to paste in laminate polymer battery's both sides for laminate polymer battery and fixed subassembly body 10 bonding are more firm.

In one embodiment, the fixing assembly body 10 further includes a first groove 121 and a second groove 122, and the first groove 121 and the second groove 122 are respectively disposed on two sides of the spacer 120. In this embodiment, first recess 121 and second recess 122 are used for installing laminate polymer battery, laminate polymer battery's appearance is matchd to the shape of first recess 121 or second recess 122, when laminate polymer battery arranges in first recess 121 or second recess 122, laminate polymer battery's positive negative pole ear and first connecting piece 131 or second connecting piece 132 surface are located same water flat line, make laminate polymer battery's positive negative pole ear be fixed in on fixed subassembly body 10 under the condition that does not take place to warp, laminate polymer battery's positive negative pole ear is arranged in between two adjacent fixed subassembly bodies 10, avoid receiving external force to increase laminate polymer battery's life.

In one embodiment, the connecting members include a first connecting member 131 and a second connecting member 132, the first connecting member 131 and the second connecting member 132 are respectively located at two ends of the fixing assembly body 10, the first connecting member 131 includes a plurality of fixing holes 1311, and the first connecting member 131 or the second connecting member 132 includes a plurality of first through holes. In this embodiment, the two sides of the fixing assembly body 10 are provided with the clamping members 110, the two ends of the fixing assembly body 10 are provided with the connecting members, and the plurality of fixing holes 1311 on the first connecting member 131 are used for fixing the positive and negative lugs of the soft-package battery; the plurality of through holes of the first connecting member 131 and the second connecting member 132 are used to connect the adjacent fixing assembly bodies 10 more firmly. The first through hole comprises a first protruding through hole 1312 and a first recessed through hole 1313, after two adjacent second connecting pieces are clamped, the first protruding through hole 1312 is clamped with the first recessed through hole 1313 of the adjacent second connecting piece 132, so that the clamping of two adjacent fixing assembly bodies 10 is firmer, and in addition, a screw rod fastener can be inserted into the first through hole for locking, so that the connection between the fixing assembly bodies 10 is firmer and more compact. Further, a plurality of strip-shaped bosses 1110 are arranged on the inner sides of the clamping protrusions 111, and the arrangement of the strip-shaped bosses 1110 increases the friction force between the clamping protrusions 111 and the clamping grooves 112 during clamping, so that the fixed assembly body 10 is prevented from deforming and moving when being subjected to external force.

In one embodiment, the width of the first connecting member 131 is smaller than the width of the second connecting member 132, and the second connecting member 132 forms a rectangular structure with the spacer 120 and the clamping member 110. In this embodiment, joint piece 110 is located the both sides of separator 120, first connecting piece 131 and second connecting piece 132 are located the both ends of separator 120, second connecting piece 132, joint piece 110 and separator 120 form the rectangle, and the width of first connecting piece 131 is less than the width of second connecting piece 132, the both sides of first connecting piece 131 are used for installing the copper bar, the copper bar is installed and is made whole laminate polymer battery group have regular integrality on first connecting piece 131, be convenient for storage, transportation and use.

A parallel soft package battery structure comprises a battery structure body 100, wherein the battery structure body 100 comprises a plurality of fixing assembly bodies 10, a connecting copper bar 50, a battery cell terminal 30 and a plurality of fasteners 40, the battery cell terminal 30 is connected with positive and negative lugs of a soft package battery, and the battery cell terminal 30 is fixedly installed on the surface of the fixing assembly bodies 10 through the fasteners 40;

the connecting copper bar 50 is connected with the battery cell terminal 30 through the fastener 40, the connecting copper bar 50 is connected with the battery cell terminal 30 through the fastener 40 and the battery cell terminal 30 are fixedly installed on the fixing component body 10, so that the soft package battery is fixedly installed in the fixing component body 10 in a mutually clamped mode. In one embodiment, as shown in fig. 4 to 10, two pouch batteries are placed in the first groove 121 and the second groove 122 of the fixing assembly body 10, the positive tab and the negative tab of each pouch battery are flush with the surface of the first connecting member 131, the cell terminal 30 is connected with the positive tab and the negative tab of each pouch battery, and the cell terminal 30 is fixedly mounted on the fixing assembly body 10 by a fastener.

In one embodiment, as shown in fig. 8, the cell terminal 30 includes a first cell terminal 310 and a second cell terminal 320, and the first cell terminal 310 and the second cell terminal 320 are respectively connected to a positive electrode tab or a negative electrode tab of a pouch battery;

the first cell terminal 310 comprises a first connecting end 311 and a second connecting end 312, and the first connecting end 311 and the second connecting end 312 are respectively connected with positive lugs or negative lugs of two adjacent soft package batteries;

the second cell terminal 320 includes a third connection end and a fourth connection end, and the third connection end and the fourth connection end are respectively connected to the positive electrode tab or the negative electrode tab of two adjacent soft package batteries. In this embodiment, the first cell terminal 310 is connected to the negative tab, the second cell terminal 320 is connected to the positive tab, the material of the first cell terminal 310 is preferably nickel, and the material of the second cell terminal 320 is aluminum. The battery cell terminal 30 is in a U-shaped structure, a second through hole 330 is formed in the bottom end of the U-shaped battery cell terminal 30, and the connecting copper bar 50 and the battery cell terminal 30 are simultaneously fixed on the fixing assembly body 10 by the fastener 40 through the second through hole 330; the first cell terminal 310 of the U-shaped structure includes two first connection ends 311 and a second connection end 312, and the two connection ends are respectively connected with the cathodes of two adjacent soft-package batteries; two ends of the second battery cell terminal 320 are connected with the positive electrodes of the adjacent soft package batteries, and the battery cell terminal is arranged between the fixing component bodies, so that the service life of the terminal is prevented from being shortened due to external force; in addition, the terminal is directly soldered at high temperature, the PP glue is easily scalded, and potential safety hazards exist.

In another embodiment, as shown in fig. 9, the cell terminal in the above embodiment is split into two L-shaped cell terminals including a through hole and a connection end, and the cell terminal in this embodiment facilitates taking and placing of the battery during the installation process.

In one embodiment, as shown in fig. 10, the connecting copper bar 50 includes a first connecting copper bar 510 and a second connecting copper bar 520, and the first connecting copper bar 510 or the second connecting copper bar 520 is respectively connected to a plurality of positive or negative cell terminals; the third through hole 530 includes an output hole 540 for outputting the positive electrode or the negative electrode of the plurality of pouch batteries. In the present embodiment, the first connecting copper bar 510 and the plurality of first cell terminals 310 are fixedly connected to the fixing assembly body 10, and the second connecting copper bar 520 and the plurality of second cell terminals 320 are fixedly connected to the fixing assembly body 10.

Specifically, the first connecting copper bar 510 or the second connecting copper bar 520 includes a first connecting portion 550 and a second connecting portion 560, the first connecting portion 550 and the second connecting portion 560 are integrally formed, and the first connecting portion 550 and the second connecting portion 560 are respectively mounted on two adjacent surfaces of the first connecting member 131; the first connecting part 550 includes a plurality of third through holes 530, and the fastening member 40 fixes the connecting copper bar 50 on the first connecting member 131 through the third through holes 530; the second connection part 560 includes an output hole 540 for outputting the positive or negative electrodes of several pouch batteries. In this embodiment, six soft package batteries are connected in parallel, the connecting copper bar is a connector bent by 90 degrees, the side edge of the connecting copper bar 50, namely the three third through holes 530 of the second connecting portion, are fixed on the fixing component body 10 through the fasteners 40 and the battery cell terminals 30, and the other side of the connecting copper bar 40, namely the first connecting portion, comprises an output hole 540 for connecting six soft package batteries and a battery pack to an external device.

In one embodiment, as shown in fig. 7, the battery structure body 100 further includes upper and lower covers 60, and the upper and lower covers 60 are mounted to the outer walls of a plurality of the fixing member bodies 10. The side of upper and lower lid is equipped with the joint spare 110 similar with fixed subassembly body 10 for carry out the joint with fixed subassembly body 10, and the inboard of upper and lower lid 60 is pasted and is had the double faced adhesive tape and make upper and lower lid and laminate polymer battery be connected more firmly. The side edge of the first connecting piece 131 of the fixed assembly body 10, that is, the same plane as the output hole 540 of the connecting copper bar 50, is provided with the positive and negative electrode marks, so that a user can conveniently identify the positive and negative electrodes of the soft package battery. Still be equipped with a plurality of fourth through-hole 610 on the upper and lower lid, a plurality of third through-hole 530 phase-match on fourth through-hole 610 and the fixed subassembly body 10 for a plurality of laminate polymer battery and or establish ties the back and insert third through-hole 530 and fourth through-hole 610 with the screw rod, be used for making fixed subassembly body 10 more firm, avoid receiving external force and take place to warp. In addition, the battery structure body 100 further includes a housing, and a gasket made of an elastic material is disposed between the upper cover and the lower cover and the housing, so that the gasket made of the elastic material can play a role of buffering when the battery structure is subjected to an external force, thereby prolonging the service life of the battery structure body 100.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the utility model can be smoothly implemented by the ordinary technicians in the industry according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. The fixing device for the soft package battery is characterized by comprising a fixing assembly body, wherein the fixing assembly body comprises clamping pieces, connecting pieces and isolating pieces, the clamping pieces are located on two sides of the fixing assembly body, the connecting pieces are located at the end portions of the fixing assembly body, and the connecting pieces and the clamping pieces are respectively connected with the edges of the isolating pieces;

2. The fixing device for the soft package battery is characterized in that the volume of the cavity is larger than or equal to that of a single soft package battery, and the distance between two adjacent spacers is larger than or equal to the thickness of the soft package battery.

3. The fixing device for the soft package battery according to claim 1 or 2, wherein the fixing assembly body further comprises a first groove and a second groove, and the first groove and the second groove are respectively arranged on two sides of the separator.

4. The fixing device for the soft package battery as recited in claim 1, wherein the connecting member comprises a first connecting member and a second connecting member, the first connecting member and the second connecting member are respectively located at two ends of the fixing assembly body, the first connecting member comprises a plurality of fixing holes, and the first connecting member or the second connecting member comprises a plurality of first through holes.

5. The fixing device for the soft package battery as recited in claim 4, wherein the width of the first connecting member is smaller than that of the second connecting member, and the second connecting member forms a rectangular structure with the spacer and the clamping member.

6. The fixing device for the soft package battery as recited in claim 3, wherein a plurality of strip-shaped bosses are arranged on the inner side of the clamping protrusion.

7. A parallel type soft package battery structure is characterized by comprising a battery structure body, wherein the battery structure body comprises a plurality of fixing assembly bodies, connecting copper bars, a battery cell terminal and a plurality of fasteners according to claim 1, the battery cell terminal is connected with positive and negative lugs of a soft package battery, and the battery cell terminal is fixedly arranged on the surface of the fixing assembly body through the fasteners;

8. The parallel soft-package battery structure of claim 7, wherein the cell terminals comprise a first cell terminal and a second cell terminal, and the first cell terminal and the second cell terminal are respectively connected with a positive tab or a negative tab of the soft-package battery;

9. A parallel soft package battery structure according to claim 8, wherein the connecting copper bars comprise a first connecting copper bar and a second connecting copper bar, and the first connecting copper bar or the second connecting copper bar is connected to a plurality of positive or negative cell terminals respectively.

10. A parallel soft package battery structure according to claim 9, wherein the first connecting copper bar or the second connecting copper bar comprises a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are integrally formed, and the first connecting portion and the second connecting portion are respectively mounted on two adjacent faces of the first connecting member; the first connecting part comprises a plurality of third through holes, and the fastener fixes the connecting copper bar on the first connecting piece through the third through holes; the second connecting portion include the delivery port that is used for exporting the anodal or negative pole of a plurality of laminate polymer battery.