CN211320188U

CN211320188U - Battery pack

Info

Publication number: CN211320188U
Application number: CN202020341415.6U
Authority: CN
Inventors: 李新
Original assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Current assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-08-21
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses a battery pack, including mica plate and battery module, still include linking bridge, first bolt and second bolt, linking bridge includes first type connecting piece, first type connecting piece is equipped with first platform and is higher than the second platform of first platform, first platform is equipped with first connecting hole, the second platform is equipped with the second connecting hole, first bolt passes first connecting hole articulates in the end plate of battery module, the second bolt pass the mica plate articulate in the second connecting hole. The proposal leads the mica plate to be connected with the end plate of the battery module through the first connecting piece and the bolt, and the connecting structure has high reliability and can not influence the heat dissipation of the battery module.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery package.

Background

The battery package includes the box and is located a plurality of battery module in the box. In recent years, the demand for the fireproof performance of the battery pack is increasing, and the improvement of the fireproof performance of the battery pack becomes a necessary design demand.

In the prior art, the fireproof performance of the battery pack is generally improved by arranging the mica plate above the cover plate of the battery module. The mica plate is bonded with the cover plate through the adhesive, and the connection reliability is poor and the heat dissipation of the battery module is influenced by the connection mode.

In view of this, it is a technical problem to be solved by those skilled in the art to improve the connection manner between the mica plate and the cover plate.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a battery pack, including mica plate and battery module, the battery pack still includes linking bridge, first bolt and second bolt, linking bridge includes first type connecting piece, first type connecting piece is equipped with first platform and is higher than the second platform of first platform, first platform is equipped with first connecting hole, the second platform is equipped with the second connecting hole, first bolt passes first connecting hole is twisted in the end plate of battery module, the second bolt pass the mica plate twist in the second connecting hole.

According to the scheme, the mica plate is connected with the end plate of the battery module through the first connecting piece and the bolt, and compared with the connecting mode in the background technology, the connecting mode is higher in reliability and does not influence the heat dissipation of the battery module.

Optionally, the battery modules are arranged in a plurality of rows, the connecting bracket includes a first connecting assembly and a second connecting assembly, the first connecting assembly is arranged outside the outermost row, the second connecting assembly is arranged between adjacent rows, and the first connecting assembly and the second connecting assembly both include the first connecting assembly.

Optionally, the first connecting assembly includes a first connecting member, the first connecting member belongs to the first type of connecting member, an anti-rotation arm is arranged below the first platform of the first connecting member, and the anti-rotation arm extends into a top groove of an outer side end plate of the outermost end battery module to limit the first connecting member to rotate in a horizontal plane.

Optionally, the first connecting assembly further comprises a second connecting piece, the second connecting piece belongs to the first connecting piece, and the second connecting piece is provided with two first connecting holes and is connected with the end plates of two adjacent battery modules in a row through the two first connecting holes.

Optionally, the second connecting assembly includes a third connecting piece, the third connecting piece belongs to the first connecting piece, the third connecting piece is provided with two first connecting holes, and is connected with the end plates of two adjacent front-end battery modules through two first connecting holes.

Optionally, the second connecting assembly further comprises a fourth connecting piece, the fourth connecting piece belongs to the first connecting piece, a hoop used for restraining the wiring harness is arranged on a first platform of the fourth connecting piece, four first connecting holes are further formed in the first platform, and the first connecting holes are connected with end plates of two adjacent battery modules in one row and connected with end plates of two adjacent battery modules in another row through another two first connecting holes.

Optionally, the second coupling assembling still includes the fifth connecting piece, the fifth connecting piece belongs to first type connecting piece, the fifth connecting piece supports on the box crossbeam of battery package, the first platform of fifth connecting piece is equipped with the clamp that is used for retraining the pencil, still is equipped with two first connecting hole, and through two the end plate of first connecting hole and two adjacent rows of rearmost end battery modules is connected, the fifth connecting piece still is equipped with the clamp that is used for retraining the copper bar.

Optionally, the fourth connecting piece and the fifth connecting piece each include two second platforms, the two second platforms are located on two sides of the first platform respectively and enclose a groove together with the first platform, and the copper bar and the wiring harness pass through the groove.

Optionally, the battery pack further includes a plurality of third bolts, the connecting bracket further includes a second connecting member, the second connecting member is provided with at least two sixth connecting holes, and the third bolts penetrate through different sixth connecting holes and are screwed to end plates of different battery modules; the first connecting assembly comprises a sixth connecting piece, the second connecting assembly comprises a seventh connecting piece, and the sixth connecting piece and the seventh connecting piece both belong to the second type of connecting piece; the sixth connecting piece is provided with two sixth connecting holes and is connected with a row of two adjacent battery modules through the two sixth connecting holes; the seventh connecting piece is provided with four sixth connecting holes, is connected with the end plates of one row of two adjacent battery modules through two sixth connecting holes and is connected with the end plates of the other row of two adjacent battery modules through the other two sixth connecting holes.

Optionally, the first type of connecting piece and the second type of connecting piece are both die-cast pieces with smooth edges.

Drawings

Fig. 1 is a top view of an embodiment of a battery pack provided by the present invention;

fig. 2 is a view of the hidden mica board of fig. 1.

Fig. 3 is a view of fig. 1 showing only the connecting bracket.

FIG. 4a is a top view of the first connector;

FIG. 4b is a side view of the first connector;

FIG. 4c is a top view of the first connector in an installed state;

FIG. 5 is a top view of the second connector;

FIG. 6 is a top view of the third link;

FIG. 7a is a top view of a fourth link;

FIG. 7b is a front view of the fourth link;

FIG. 8a is a top view of a fifth link;

FIG. 8b is a front view of the fifth link;

FIG. 9 is a top view of a sixth link;

fig. 10 is a top view of the seventh connecting member.

The reference numerals are explained below:

1 battery module, 11 end plates, 111 grooves, 12 side plates, 13 cover plates, 2 mica plates, 3 connecting supports, 31 first connecting assembly, 32 second connecting assembly, 311 first connecting piece, 312 second connecting piece, 313 sixth connecting piece, 321 third connecting piece, 322 fourth connecting piece, 323 fifth connecting piece, 324 seventh connecting piece, a first platform, a1 first connecting hole, a2 third connecting hole, b second platform, b1 second connecting hole, c rotation preventing arm, d third platform, d1 fourth connecting hole, e fourth platform, e1 fifth connecting hole, f sixth connecting hole, g seventh connecting hole, 4 wiring harnesses, 5 copper bars, 6 first bolts, 7 second bolts, 8 third bolts.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a detailed description of the technical solution of the present invention with reference to the accompanying drawings.

It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the "front", "rear", "left" and "right" are the directions or positional relationships indicated by the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the system or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the battery pack includes a mica plate 2, a battery module 1, a connection bracket 3, a first bolt 6, and a second bolt 7. The battery module 1 comprises an end plate 11, a side plate 12, a cover plate 13 and a bottom plate, and the four parts encapsulate the battery cell.

The connecting bracket 3 comprises a first connecting piece, the first connecting piece is provided with a first platform a and a second platform b higher than the first platform a, the first platform a is provided with a first connecting hole a1, and the second platform b is provided with a second connecting hole b 1. The first bolt 6 is screwed to the end plate 11 of the battery module 1 through the first connection hole a1 so that the first type of connector is connected to the end plate 11 of the battery module 1, and the second bolt 7 is screwed to the second connection hole b1 through the mica plate 2 so that the mica plate 2 is connected to the first type of connector. The second connecting hole b1 is a threaded hole, and the second connecting hole b1 can be formed by directly processing the first type of connecting piece, or can be formed by processing a unthreaded hole or a stepped hole on the first type of connecting piece and then embedding the threaded sleeve into the unthreaded hole or the stepped hole.

According to the scheme, the mica plate 2 is connected with the end plate 11 of the battery module 1 through the first connecting piece and the bolts, and compared with the connecting mode in the background technology, the connecting mode is higher in reliability and does not influence the heat dissipation of the battery module 1.

Specifically, the battery modules 1 of the battery pack are arranged in a plurality of rows, the connecting bracket 3 includes a first connecting member 31 and a second connecting member 32, the first connecting member 31 is disposed outside the outermost row, the second connecting member 32 is disposed between adjacent rows, and both the first connecting member 31 and the second connecting member 32 include the above-described first type connecting member. Thus, the reliability of connection between the mica plate 2 and the battery module 1 is improved. As can be understood by referring to fig. 2 in particular, 12 battery modules 1 are arranged in fig. 2, 6 battery modules are arranged in a row, and are arranged in two rows, namely, a left row and a right row, a group of second connecting assemblies 32 is arranged between the two rows, a group of first connecting assemblies 31 is arranged on each of the left side and the right side of the left row, and the two groups of first connecting assemblies 31 are symmetrical with respect to the front-back direction.

Specifically, the first connecting member 31 includes a first connecting member 311, the first connecting member 311 being connected to the outer end plate 11 of the outermost row of the rearmost battery module 1, as will be understood from fig. 2, four first connecting members 311 are provided in fig. 2, the first being connected to the left end plate 11 of the left-most row of the front-most battery module 1, the second being connected to the left end plate 11 of the left-most row of the rear-most battery module 1, the third being connected to the right end plate 11 of the right-most row of the front-most battery module 1, and the fourth being connected to the right end plate 11 of the right-most row of the rear-most battery module 1.

As shown in fig. 4a, the first connecting member 311 belongs to the first type of connecting member, a first connecting hole a1 is disposed on the first platform a of the first connecting member 311, and a second connecting hole b1 is disposed on the second platform b. As shown in fig. 4b, an anti-rotation arm c is provided under the first platform a of the first connector 311. As shown in fig. 4c, the rotation preventing arm c protrudes into the top groove 111 of the outer side end plate 11 of the outermost row endmost battery module 1, and when the first connecting member 311 has a tendency to rotate in the horizontal plane, the rotation preventing arm c interferes with the wall of the groove 111, so that the first connecting member 311 can be restricted from rotating in the horizontal plane. Thus, the reliability of connection between the mica plate 2 and the battery module 1 can be improved.

Specifically, the first connection assembly 31 further includes a second connection member 312, as shown in fig. 2, the second connection member 312 is connected to the end plates 11 of two adjacent battery modules 1 in a row, as shown in fig. 5, the second connection member 312 belongs to a first connection member, two first connection holes a1 are arranged on the first platform a of the second connection member 312, and two first bolts 6 are screwed to the end plates 11 of two adjacent battery modules 1 in a row through the two first connection holes a 1. Preferably, one of the two connection holes is a circular hole, and the other is an oblong hole, so that the distance between the two first bolts 6 can be finely adjusted according to the positions of the two adjacent battery modules 1 in a row, thereby facilitating the installation of the second connection member 312.

Specifically, the second connecting assembly 32 includes a third connecting member 321, the third connecting member 321 is connected to two adjacent rows of the battery modules 1 at the front end, as can be understood by referring to fig. 2, one third connecting member 321 is provided in fig. 2, and the third connecting member 321 is connected to the right end plate 11 of the left row of the battery modules 1 at the front end, and is also connected to the left end plate 11 of the right row of the battery modules 1 at the front end.

As shown in fig. 6, the third connecting member 321 belongs to the first type of connecting member, two first connecting holes a1 are disposed on the first platform a of the third connecting member 321, and two first bolts 6 respectively pass through the two first connecting holes a1 and are screwed to the end plates 11 of the two front-most adjacent rows of battery modules 1. Preferably, one of the two connecting holes is a round hole, and the other connecting hole is an oblong hole, so that the distance between the two first bolts 6 can be finely adjusted according to the distance between two adjacent rows, and the third connecting piece 321 can be conveniently installed.

Specifically, the second connecting assembly 32 further includes a fourth connecting member 322, the fourth connecting member 322 belongs to a first type of connecting member, and as shown in fig. 2 and 7a, the first platform a of the fourth connecting member 322 is provided with four first connecting holes a1, the four first bolts 6 respectively pass through the four first connecting holes a1 and are screwed on the end plates 11 of the four battery modules 1, two of the four battery modules 1 are located in one row and adjacent to each other, and the other two are located in the other row and adjacent to each other. Preferably, the four first connection holes a1 reserve a gap adjustment space to adjust the distance between any two first bolts 6 for the installation of the fourth connection member 322.

As shown in fig. 7a and 7b, the fourth connecting member 322 includes two second platforms b, the two second platforms b are respectively located at two sides of the first platform a, and enclose the first platform a to form the groove 111, and the copper bar 5 and the wire harness 4 pass through the groove 111, so that the arrangement of the copper bar 5 and the wire harness 4 is facilitated. The battery pack adopts a copper bar 5 and a wire harness 4 to carry out electric connection and signal connection. The first platform a of the fourth connecting member 322 is provided with a third connecting hole a2, and the third connecting hole a2 is used for installing a clip for restraining the wiring harness 4.

Specifically, the second connecting assembly 32 further includes a fifth connecting member 323, and the fifth connecting member 323 is connected to the end plates 11 of the two adjacent rows of rearmost battery modules 1. As will be understood from fig. 2, a fifth connecting member 323 is provided in fig. 2, and the fifth connecting member 323 is connected to the right end plate 11 of the left-row final end cell module 1 and also connected to the left end plate 11 of the right-row final end cell module 1.

As shown in fig. 8a, the fifth connecting member 323 belongs to the first type of connecting member, two first connecting holes a1 are provided on the first platform a of the fifth connecting member 323, and two first bolts 6 are screwed to the end plates 11 of the two adjacent rows of rearmost battery modules 1 through the two first connecting holes a1, respectively. Preferably, one of the two connecting holes is a circular hole, and the other is a long circular hole, so that the distance between the two first bolts 6 can be finely adjusted according to the distance between two adjacent rows, and the fifth connecting member 323 can be conveniently installed.

As shown in fig. 8a and 8b, the fifth connecting member 323 includes two second platforms b, the two second platforms b are respectively located at two sides of the first platform a, and enclose the first platform a to form the groove 111, and the copper bar 5 and the wire harness 4 pass through the groove 111, so that the arrangement of the copper bar 5 and the wire harness 4 is facilitated. The first platform a of the fifth connecting member 323 is provided with a third connecting hole a2, and the third connecting hole a2 is used for installing a clip for restraining the wire harness 4. The fifth connecting piece 323 is further provided with a third platform d used for supporting the copper bar 5, the third platform d is located between the second platforms b, the third platform d is provided with a fourth connecting hole d1, and the fourth connecting hole d1 is used for installing a hoop restraining the copper bar 5. The fifth connecting piece 323 is further provided with a fourth platform e, the fourth platform e is lower than the first platform a, the fifth connecting piece 323 is supported on the box body beam of the battery pack through the fourth platform e, specifically, the fourth platform e is provided with a fifth connecting hole e1, and a bolt is screwed on the box body beam of the battery pack after passing through the fifth connecting hole e 1.

Further, the battery pack may further include a third bolt 8, and the connecting bracket 3 may further include a second type of connecting member. The second type connecting piece is provided with at least two sixth connecting holes f, and the third bolt 8 is screwed on the end plates 11 of different battery modules 1 after penetrating through different sixth connecting holes f, so that the battery modules 1 are connected with the battery modules 1 through the second type connecting piece and the third bolt 8, the relative positions of the different battery modules 1 can be effectively restrained, and the relative position change of the battery modules 1 is prevented from influencing the connection reliability of the mica plates 2 and the battery modules 1.

Specifically, the first connecting assembly 31 includes a sixth connecting member 313, the sixth connecting member 313 belongs to a second type of connecting member, and as shown in fig. 2 and 9, the sixth connecting member 313 is provided with two sixth connecting holes f, and the two third bolts 8 are screwed to the end plates 11 of the two adjacent battery modules 1 in a row after passing through the two sixth connecting holes f. Preferably, one of the two sixth connecting holes f is a circular hole, and the other is an elongated circular hole, so that it is convenient to finely adjust the distance between the two third bolts 8 according to the distance between the two adjacent battery modules 1 in a row, thereby facilitating the installation of the sixth connecting member 313.

Specifically, the second connecting assembly 32 includes a seventh connecting member 324, the seventh connecting member 324 belongs to a second type of connecting member, and as shown in fig. 2 and 10, the seventh connecting member 324 is provided with four sixth connecting holes f, four third bolts 8 are screwed to the end plates 11 of the four battery modules 1 through the four sixth connecting holes f, two of the four battery modules 1 are located in one row and adjacent to each other, and the other two are located in the other row and adjacent to each other. Preferably, the four sixth connecting holes f reserve a gap adjustment space so as to adjust a distance between any two third bolts 8 for the installation of the seventh connecting member 324. The seventh connecting member 234 is further provided with a seventh connecting hole g for mounting a clip for restraining the wire harness 4.

Specifically, the connecting pieces are preferably die-cast pieces with smooth edges, so that the cell core can be prevented from being scratched by the connecting pieces.

The battery pack provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. Battery package, including mica plate (2) and battery module (1), its characterized in that, the battery package still includes linking bridge (3), first bolt (6) and second bolt (7), linking bridge (3) include first kind of connecting piece, first kind of connecting piece is equipped with first platform (a) and is higher than second platform (b) of first platform (a), first platform (a) is equipped with first connecting hole (a1), second platform (b) is equipped with second connecting hole (b1), first bolt (6) pass first connecting hole (a1) are twisted and are connected in end plate (11) of battery module (1), second bolt (7) pass mica plate (2) twist and connect in second connecting hole (b 1).

2. The battery pack according to claim 1, wherein the battery modules (1) are arranged in a plurality of rows, the connecting bracket (3) includes a first connecting member (31) and a second connecting member (32), the first connecting member (31) is arranged outside an outermost row, the second connecting member (32) is arranged between adjacent rows, and the first connecting member (31) and the second connecting member (32) each include the first-type connecting member.

3. The battery pack according to claim 2, wherein the first connecting member (31) comprises a first connecting member (311), the first connecting member (311) belongs to the first type of connecting member, and an anti-rotation arm (c) is provided under the first platform (a) of the first connecting member (311), and extends into the top groove (111) of the outer end plate (11) of the outermost row of the endmost battery module (1) to limit the rotation of the first connecting member (311) in a horizontal plane.

4. The battery pack according to claim 3, wherein the first coupling member (31) further comprises a second coupling member (312), the second coupling member (312) belonging to the first type of coupling member, the second coupling member (312) being provided with two first coupling holes (a1) and coupled to the end plates (11) of a row of two adjacent battery modules (1) through the two first coupling holes (a 1).

5. A battery pack according to claim 2, wherein the second connecting member (32) comprises a third connecting member (321), the third connecting member (321) belonging to the first kind of connecting member, the third connecting member (321) being provided with two first connecting holes (a1) and being connected to the end plates (11) of two adjacent rows of the foremost battery modules (1) through the two first connecting holes (a 1).

6. The battery pack according to claim 5, wherein the second connecting assembly (32) further comprises a fourth connecting member (322), the fourth connecting member (322) belongs to the first type of connecting member, a clamp for restraining the wire harness (4) is provided on the first platform (a) of the fourth connecting member (322), four first connecting holes (a1) are provided, and are connected to the end plates (11) of two adjacent battery modules (1) in one row through two first connecting holes (a1) and connected to the end plates (11) of two adjacent battery modules (1) in the other row through the other two first connecting holes (a 1).

7. The battery pack according to claim 6, wherein the second connecting assembly (32) further comprises a fifth connecting member (323), the fifth connecting member (323) belongs to the first type of connecting member, the fifth connecting member (323) is supported on a box beam of the battery pack, the first platform (a) of the fifth connecting member (323) is provided with a collar for restraining the wiring harness (4), two first connecting holes (a1) are further provided and are connected with the end plates (11) of two adjacent rows of rearmost battery modules (1) through the two first connecting holes (a1), and the fifth connecting member (323) is further provided with a collar for restraining the copper bar (5).

8. The battery pack according to claim 7, wherein the fourth connecting member (322) and the fifth connecting member (323) each include two second lands (b) respectively located on both sides of the first land (a) to form a groove (111) together with the first land (a), and the copper bar (5) and the wiring harness (4) are passed through the groove (111).

9. The battery pack according to any one of claims 2-8, characterized in that the battery pack further comprises a plurality of third bolts (8), the connecting bracket (3) further comprises a second type of connecting member, the second type of connecting member is provided with at least two sixth connecting holes (f), and the third bolts (8) are screwed to the end plates (11) of different battery modules (1) through different sixth connecting holes (f); -said first connection assembly (31) comprises a sixth connection (313), said second connection assembly (32) comprises a seventh connection (324), said sixth connection (313) and said seventh connection (324) both belonging to said second category of connections; the sixth connecting piece (313) is provided with two sixth connecting holes (f) and is connected with two adjacent battery modules (1) in a row through the two sixth connecting holes (f); the seventh connecting piece (324) is provided with four sixth connecting holes (f), and is connected with the end plates (11) of two adjacent battery modules (1) in one row through two sixth connecting holes (f) and is connected with the end plates (11) of two adjacent battery modules (1) in the other row through the other two sixth connecting holes (f).

10. The battery pack of claim 9, wherein the first type of connector and the second type of connector are die cast with rounded edges.