CN212848716U

CN212848716U - Connecting device of soft-packaged cell tab

Info

Publication number: CN212848716U
Application number: CN202021767337.2U
Authority: CN
Inventors: 魏维刚; 李晓冬; 兰晓岱; 吕游
Original assignee: Shanxi Dayun Mengguli New Energy Technology Co ltd
Current assignee: Shanxi Dayun Mengguli New Energy Technology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-03-30
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to an electric locomotive goes up power battery's auxiliary device, in particular to soft-packaged electrical core utmost point ear's connecting device, thereby need reserve the problem of a large amount of installation space in the battery box when assembling into whole case battery by little module in order to solve soft-packaged electrical core and reduced battery system's specific energy. The utility model provides a connecting device of soft-packaged electrical core utmost point ear, including fixed square body, the tight piece that expands, the cluster parallel copper bar of at least one U type, the upper surface of fixed square body is equipped with first logical groove, open the bottom surface in first logical groove has a screw, the tight piece that expands is placed at first logical inslot, the tight piece that expands is made by rubber materials, two vertical arms of cluster parallel copper bar press from both sides respectively and are being expanded tight piece and first logical groove both sides wall between, it has a through-hole on the tight piece to expand, thereby the bolt passes the through-hole and screws up in the screw and carry out extrusion deformation to the tight piece that expands and make cluster parallel copper bar press from both sides tightly between the both sides wall in first logical groove and the. The connecting device adopting the novel soft-packaged cell lug has good market economic benefits.

Description

Connecting device of soft-packaged cell tab

Technical Field

The utility model relates to an electric automobile goes up power battery's auxiliary device specifically is a connecting device of laminate polymer core utmost point ear.

Background

At present, the assembly process of a battery box of a power battery system is mostly to assemble soft-packaged battery cores into a certain number of small modules and then assemble the small modules into the battery box; in the small module design and production link, required parts and production processes are extremely complex in order to meet the universality and consistency among modules. Simultaneously, become the in-process of whole case battery by little module assembly, need weld or use bolted connection between each module and the battery box, and still need adopt parts such as casing fixed, consequently, for satisfying the connection of laminate polymer core utmost point ear, become the in-process of whole case battery at little module assembly, need reserve the activity space of a large amount of installation space in order to satisfy fastening spanner or welding tool etc. in the battery box, thereby taken up the inside space of battery box, the specific energy of battery system has been reduced.

Disclosure of Invention

The utility model discloses a when solving among the prior art laminate polymer core and assembling into whole case battery by little module, thereby need reserve the problem that a large amount of installation space have reduced battery system's specific energy in the battery box, provide a novel connecting device of laminate polymer core utmost point ear.

The utility model discloses an adopt following technical scheme to realize: the utility model provides a connecting device of soft-packaged electrical core utmost point ear, includes the cluster parallel copper bar of fixed square body, bloated tight piece, at least one U type (the cluster parallel copper bar of U type comprises two vertical arms and an upper base arm), the upper surface of fixed square body is equipped with first logical groove, open the bottom surface that first logical groove has a screw, bloated tight piece is placed at first logical inslot, bloated tight piece is made by rubber materials, two vertical arms of cluster parallel copper bar press from both sides respectively between bloated tight piece and the first logical groove both sides cell wall, have a through-hole on the bloated tight piece, the bolt passes the through-hole and twists in the screw to carry out the extrusion deformation to bloated tight piece for two vertical arms of cluster parallel copper bar are pressed from both sides cell wall and the tight piece that expands in first logical groove respectively tightly between. The series-parallel copper bars can be clamped between the first through groove and the expansion block through extrusion deformation of the expansion block, and the size and the shape of the expansion block are matched with those of the first through groove, which is well known to those skilled in the art.

When the soft-package cell tabs are required to be connected in series, the positive electrode of one soft-package cell tab is inserted between the vertical arm on one side of the series-parallel copper bar and the expansion block of the connecting device of the soft-package cell tab, and the negative electrode of the other soft-package cell tab is inserted between the other vertical arm of the series-parallel copper bar and the expansion block of the connecting device of the soft-package cell tab; when needs soft-package electricity core utmost point ear parallel connection, then need insert the vertical arm in one side of the series-parallel copper bar among the connecting device of soft-package electricity core utmost point ear side by side with the same level of N soft-package electricity core utmost point ear and expand between the tight piece, last bolt passes the through-hole on the tight piece that expands and twists in the screw of first logical groove bottom surface, because the tight piece that expands is rubber materials, carry out extrusion deformation to the tight piece that expands through direction of height promptly when locking the bolt, form width direction deformation extrusion state, thereby make soft-package electricity core utmost point ear press from both sides tightly between the vertical arm of series-parallel copper bar and the tight piece that expands, and simultaneously, soft-package electricity core utmost point ear surface can produce the indent and warp, increase the compaction effect between the soft-package electricity core utmost point.

The utility model discloses produced beneficial effect as follows:

the utility model discloses a connecting device of soft-packaged electrical core utmost point ear has solved the soft-packaged electrical core and has assembled when whole case battery by little module and need reserve a large amount of installation space in the battery box to reduced the problem of the specific energy of battery system, reduced equipment spare part and process simultaneously, reduced the equipment cost, just the utility model discloses under the condition that satisfies each item performance demand, not only make the connection of soft-packaged electrical core utmost point ear more firm and still have the later stage of being convenient for and change electric core, but the advantage of maintenance, each component equal real-time replacement of spare part reduces whole case battery's maintenance cost, adopts novel connecting device of soft-packaged electrical core utmost point ear have good market economic benefits.

Drawings

Fig. 1 is a schematic structural diagram of a connecting device for a soft-package cell tab (in a state of bolt locking when a compression block is pressed);

fig. 2 is a top view of the connection device for a soft-package cell tab (a state of bolt locking without a compression block);

FIG. 3 is a front view of the series-parallel copper bars;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view of the expansion block;

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a top view of FIG. 5;

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

fig. 9 is a top view of the compact.

In the figure: 1-fixed square body, 2-countersunk head through hole, 3-first logical groove, 4-series-parallel copper bar, 5-soft-packaged electrical core utmost point ear, 6-bloated compact, 7-compact heap, 8-bolt, 9-screw, 10-second logical groove, 11-third logical groove, 12-counter bore, 13-through hole, 14-baffle.

Detailed Description

Refer to fig. 1 to 9 a connecting device of laminate polymer core utmost point ear, including the cluster parallel copper bar 4 of fixed square body 1, bloated compact 6, at least one U type, the upper surface of fixed square body 1 is equipped with first logical groove 3, open the bottom surface that first logical groove has a screw 9, bloated compact 6 is placed in first logical groove 3, bloated compact 6 is made by rubber materials, two vertical arms of cluster parallel copper bar 4 press from both sides respectively between bloated compact 6 and the first 3 both sides cell walls that lead to the groove, have a through-hole 13 on the bloated compact 6, bolt 8 passes through-hole 13 and screws up in screw 9 to carry out the extrusion deformation to bloated compact 6, make two vertical arms of cluster parallel copper bar 4 pressed from both sides cell wall and bloated compact 6 between tight in the first both sides cell wall that leads to groove 3 respectively.

During specific implementation, a baffle 14 is fixed between the two side groove walls of the first through groove 3, the rear end face of the baffle 14 is flush with the rear end face of the fixed square body 1, and short circuit between different soft-package battery cell lugs 5 rows is prevented.

In specific implementation, the expansion block 6 is a square body. Further, tight piece 6 that expands is a square body, when 6 extrudees tight piece through locking bolt 8 to expanding for the contact of series-parallel connection copper bar 4 and soft-packaged electrical core utmost point ear 5 is inseparabler, guarantees electrically conductive safety.

In this specific embodiment, the fastening device further includes a pressing block 7, a counter bore 12 is formed in the upper surface of the pressing block 7, and the pressing block 7 is located between the nut of the bolt 8 and the expansion block 6. Such structure makes compact heap 7 and the increase of the area of contact of bloated tight piece 6, and through locking bolt 8, the nut position of bolt 8 sinks to bloated tight piece 6's pressurized area increase makes two vertical arms of series-parallel connection copper bar 4 inseparabler with soft-packaged electric core utmost point ear 5 contact.

The length of compact heap 7 is greater than the length of first logical groove 3, and the width of compact heap 7 is greater than the width of first logical groove 3, just the height of bloated tight piece 6 is greater than the height of first logical groove 3. Such structure not only makes compact heap 7 bigger with the area of contact of bloated tight piece 6, through locking bolt 8, the nut position of bolt 8 sinks to bloated tight piece 6's area of pressure is bigger, makes laminate polymer core utmost point ear 5 and the series-parallel connection copper bar 4 be connected inseparabler, has further ensured electrically conductive security, and the series-parallel connection copper bar 4 has been pushed down to compact heap 7 simultaneously, avoids the battery box vibrations to make series-parallel connection copper bar 4 not hard up deviate from.

The center lines of the pressing block 7, the expansion block 6 and the fixed square body 1 are overlapped, and the center lines of the counter bore 12, the screw hole 9 and the through hole 13 are overlapped with the center line of the expansion block 6. Such structural arrangement is more reasonable, and when locking bolt 8, the atress of the soft-packaged electrical core utmost point ear 5 on both sides is even for the contact that the copper bar 4 of establishing ties and connecting in parallel and soft-packaged electrical core utmost point ear 5 is better.

The series-parallel copper bars 4 are two and two series-parallel copper bars 4 are respectively located on the front side and the rear side of the bolt 8, the interval between the two series-parallel copper bars is larger than the diameter of the bolt 8, the two series-parallel copper bars 4 are used for ensuring enough flow area, and the two series-parallel copper bars 4 are respectively located on the front side and the rear side of the bolt 8, the interval between the two series-parallel copper bars is larger than the diameter of the bolt 8, so that the bolt 8 is prevented from conducting electricity, and the safety of operators is further.

The tight piece 6 upper surface that expands is equipped with two second through grooves 10 that are used for with the lower surface laminating of the last underarm of every series-parallel connection copper bar 4, the second lead to the width more than or equal to series-parallel connection copper bar 4's of groove 10 width, the first both sides wall that leads to groove 3 on be equipped with two respectively from last to the third lead to groove 11, every the every vertical arm of series-parallel connection copper bar 4 places every respectively the third through groove 11 in, the third lead to the width more than or equal to series-parallel connection copper bar 4's of groove 11 width. Therefore, the series-parallel copper bars 4 are limited in the second through grooves 10 and the third through grooves 11, and the series-parallel copper bars 4 are further prevented from loosening due to vibration of the battery box.

The two sides of the first through groove 3 on the upper surface of the fixed square body 1 are symmetrically provided with countersunk through holes 2 respectively, so that the fixed square body is conveniently connected and fixed with a battery box body.

The interior side angle of the bottom of two vertical arms of series-parallel copper bar 4 chamfer respectively, the anterior angle chamfer of the bottom of the vertical arm of one side of series-parallel copper bar 4, the rear side angle chamfer of the bottom of the vertical arm of opposite side to if have the convenience that can be more when inserting of the series-parallel copper bar 4 of chamfer when placing series-parallel copper bar 4 at last when assembling this device.

The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications to the present invention using this concept shall all infringe the protection scope of the present invention.

Claims

1. A connecting device for a soft-packaged battery core lug is characterized by comprising a fixed square body (1), an expansion block (6) and at least one U-shaped serial-parallel copper bar (4), the upper surface of the fixed square body (1) is provided with a first through groove (3), the bottom surface of the first through groove (3) is provided with a screw hole (9), the expansion block (6) is arranged in the first through groove (3), the expansion block (6) is made of rubber material, two vertical arms of the series-parallel copper bars (4) are respectively clamped between the expansion block (6) and the groove walls at two sides of the first through groove (3), the expansion block (6) is provided with a through hole (13), the bolt (8) passes through the through hole (13) and is screwed in the screw hole (9), thereby carry out extrusion deformation to the bloated tight piece (6) for two vertical arms of series-parallel connection copper bar (4) are pressed from both sides tight respectively in the both sides cell wall of first logical groove (3) and are bloated tight piece (6) between.

2. The connecting device for the soft-package cell tab according to claim 1, wherein a baffle (14) is fixed between two side cell walls of the first through groove (3), and a rear end surface of the baffle (14) is flush with a rear end surface of the fixed square body (1).

3. The connecting device of the soft-package cell pole ear is characterized in that the expansion block (6) is a square body.

4. The connecting device of the soft package battery core electrode lug according to claim 3, further comprising a pressing block (7), wherein a counter bore (12) is formed in the upper surface of the pressing block (7), and the pressing block (7) is located between the nut of the bolt (8) and the expansion block (6).

5. The connecting device of the soft-package cell tab according to claim 4, wherein the length of the pressing block (7) is greater than that of the first through groove (3), the width of the pressing block (7) is greater than or equal to that of the expansion block (6), and the height of the expansion block (6) is greater than that of the first through groove (3).

6. The connecting device of the soft package battery core tab according to claim 5, wherein the center lines of the pressing block (7), the expansion block (6) and the fixed square body (1) are overlapped, and the center lines of the counter bore (12), the screw hole (9) and the through hole (13) are overlapped with the center line of the expansion block (6).

7. The connecting device for the soft-package cell electrode lug according to claim 6, wherein the number of the series-parallel copper bars (4) is two, the two series-parallel copper bars (4) are respectively positioned at the front side and the rear side of the bolt (8), and the interval between the two series-parallel copper bars is larger than the diameter of the nut of the bolt (8).

8. The connecting device of soft-packaged electric core electrode lug according to claim 7, characterized in that the upper surface of the expansion block (6) is provided with two second through grooves (10) for fitting with the lower surface of the upper bottom arm of each series-parallel copper bar (4), the width of each second through groove (10) is greater than or equal to the width of the series-parallel copper bars (4), two third through grooves (11) from top to bottom are respectively arranged on the two side walls of the first through groove (3), each vertical arm of the series-parallel copper bars (4) is respectively placed in each third through groove (11), and the width of each third through groove (11) is greater than or equal to the width of the series-parallel copper bars (4).

9. The connecting device for the soft-package cell tab according to claim 8, wherein two sides of the first through groove (3) on the upper surface of the fixed square body (1) are symmetrically provided with a countersunk through hole (2) respectively.

10. The connecting device of soft-package battery cell tab according to claim 9, wherein the inner corners of the bottom ends of the two vertical arms of the series-parallel copper bars (4) are chamfered respectively, the front side corner of the bottom end of the vertical arm on one side of the series-parallel copper bars (4) is chamfered, and the rear side corner of the bottom end of the vertical arm on the other side is chamfered.