CN210805849U

CN210805849U - Battery pack with efficient heat dissipation structure

Info

Publication number: CN210805849U
Application number: CN201921572647.6U
Authority: CN
Inventors: 王洪波; 许乃前; 柯亨钊; 李�亨; 戴建红
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-06-19
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses a battery package with high-efficient heat radiation structure relates to electric energy storage device technical field, include: the battery comprises a plurality of battery cells, battery cell frameworks arranged at two ends of the battery cells and used for fixing the battery cells, a filler coated in the middle of the battery cells, and a supporting frame sleeved on the battery cells and used for fixing the filler; support frame includes two support curb plates of relative parallel arrangement, and set up the butt post at two support curb plate surfaces, support frame passes through the butt post and fixes with electric core skeleton butt, the obturator both ends are spaced apart with electric core skeleton through support frame, the obturator material is phase change material, electric core skeleton includes first skeleton and second skeleton, first skeleton and second skeleton set up respectively at electric core both ends, the both sides of first skeleton and second skeleton all are equipped with connect lock catch and knot pin respectively, thereby fix electric core between first skeleton and second skeleton, guarantee that the normal temperature rise of whole battery package is balanced, play the effect of the life of extension battery package.

Description

Battery pack with efficient heat dissipation structure

Technical Field

The utility model belongs to the technical field of the electric energy storage device technique and specifically relates to a battery package with high-efficient heat radiation structure.

Background

When the battery pack generates heat in the charging and discharging process, the battery pack can work in an optimal range (less than 80 ℃) as far as possible to avoid the obvious temperature rise of a battery core in the battery pack, so that the safety risks of battery explosion and the like can be controlled, and the service life of the battery pack can be prolonged. Meanwhile, after the discharge is finished, in order to save the charging time, the battery core is expected to be rapidly cooled to below 60 ℃. That is to say, when the battery package was discharging, the temperature rise speed was about good slow, and at the charge stage after the discharge, the fast about good of electric core cooling speed was more. However, with the development of lithium battery technology, the capacity and discharge current of the battery are continuously improved, and this problem is becoming the bottleneck of the development of the battery pack.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

The utility model discloses an above-mentioned defect to prior art exists especially provides a battery package with high-efficient heat radiation structure, has solved current battery package and has risen great at the charge-discharge in-process temperature, and problem that battery package life hangs down has still solved the unbalanced problem of temperature rise of current battery package in electrode department simultaneously.

Second, technical scheme

In order to solve the technical problem, the utility model provides a battery package with high-efficient heat radiation structure, include: the battery comprises a plurality of battery cells, battery cell frameworks arranged at two ends of the battery cells and used for fixing the battery cells, a filler coated in the middle of the battery cells, and a supporting frame sleeved on the battery cells and used for fixing the filler;

the support frame comprises two support side plates which are arranged in parallel relatively and butt columns which are arranged on the outer surfaces of the two support side plates, the support frame is fixed with the electric core framework through the butt columns, the two ends of the filling body are spaced from the electric core framework through the support frame, the filling body is made of phase change materials, the technical scheme is adopted, the normal temperature rise balance of the whole battery pack is guaranteed, and the effect of prolonging the service life of the battery pack is achieved.

The battery cell framework comprises a first framework and a second framework, the first framework and the second framework are respectively arranged at two ends of the battery cell, the two sides of the first framework and the two sides of the second framework are respectively provided with a connecting lock catch and a buckle pin, the connecting lock catch on the first framework is matched with the buckle pin on the second framework in a lock joint mode, the connecting lock catch on the second framework is matched with the buckle pin on the first framework in a lock joint mode, and therefore the battery cell is fixed between the first framework and the second framework.

Wherein, still be equipped with a plurality of electric core sleeves that are used for cup jointing electric core on first skeleton and the second skeleton, be equipped with built-in recess between electric core sleeve and the electric core sleeve, built-in recess can correspond cooperation and joint with the butt post and fix.

And the support side plate is also provided with a battery cell fixing hole corresponding to the battery cell.

The filling body comprises a single-side filling body and a central filling body, wherein a filling boss is arranged on one side of the single-side filling body, filling bosses are arranged on two sides of the central filling body, and the filling bosses are used for filling gaps between adjacent electric cores.

Wherein, braced frame still is equipped with the top board, and the top board is used for compressing tightly fixed obturator upper portion.

Wherein, the spacing distance between the filling body and the battery cell framework is more than or equal to 0.5 mm.

The bottom of the supporting frame is hollow, the battery pack with the efficient heat dissipation structure further comprises a battery pack bottom shell, and the battery pack bottom shell is used for compressing and fixing the lower portion of the filling body.

The supporting frame is further provided with a lock catch clamping groove, and the lock catch clamping groove can be connected with a lock catch in a clamping mode.

Third, beneficial effect

Compared with the prior art, the battery pack of the utility model separates the supporting frame from the battery cell framework through the abutting column, thereby reducing the heat conduction from the battery cell to the two electrodes, ensuring the normal temperature rise balance of the whole battery pack, and playing the effect of prolonging the service life of the battery pack;

meanwhile, the abutting column is more firmly and reliably installed and fixed and more convenient to install through the built-in groove;

further, a battery cell fixing hole is formed in the supporting side plate to ensure that the battery cell and the supporting frame are fixed with each other; and the spacing distance between the filling body and the battery cell framework is more than or equal to 0.5mm, so that the heat conduction from the battery cell to the two electrodes can be effectively reduced, and the service life of the battery pack is prevented from being shortened.

Drawings

Fig. 1 is an exploded view of a battery pack having a high-efficiency heat dissipation structure according to the present invention 1;

fig. 2 is an exploded view of a battery pack having a high-efficiency heat dissipation structure according to the present invention, fig. 2;

fig. 3 is a structural diagram of the cell skeleton of the present invention;

FIG. 4 is a structural diagram of the supporting frame of the present invention;

FIG. 5 is a structural diagram of the first frame of the present invention;

fig. 6 is a structural diagram of the battery cell and the filling body of the present invention;

in the figure: 1 is an electric core; 2 is a cell skeleton; 3 is a filling body; 4 is a supporting frame; 5 is a battery pack bottom shell; 6 is an electrode; 7 is a first skeleton; 8 is a second skeleton; 9 is an abutting column; 10 is an upper pressure plate; 11 is a supporting side plate; 12 is a single-side filling body; 13 is a center filling body; 14 is a connecting lock catch; 15 is a buckle pin; 16 is a built-in groove; 17 is a battery core sleeve; 18 is a cell fixing hole; 19 is a filling boss; 20 is a lock catch slot.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example 1:

the utility model discloses battery package with high-efficient heat radiation structure, as shown in figure 1, figure 2, figure 3, figure 4, figure 5 and figure 6, include: the cell comprises a plurality of cells 1, cell frameworks 2 arranged at two ends of the cells 1 and used for fixing the cells 1, a filler 3 coated at the middle part of the cells 1, and a support frame 4 sleeved on the cells 1 and used for fixing the filler 3, wherein in the embodiment, the cells 1 and the cells 1 are arranged in parallel, the spacing distances between the adjacent cells 1 are the same, and the filler 3 made of a phase-change material is arranged at the middle part of the cells 1; the supporting frame 4 comprises two supporting side plates 11 which are arranged in parallel relatively and an abutting column 9 arranged on the outer surfaces of the two supporting side plates 11, the supporting frame 4 is fixedly abutted with the cell framework 2 through the abutting column 9, and two ends of the filling body 3 are spaced from the cell framework 2 through the supporting frame 4; particularly, the filling body 3 adopting the phase-change material can absorb a large amount of heat in the phase-change process, the temperature rise of the battery cell 1 in the charging and discharging process is reduced, the phase-change material is fixed through the independent supporting frame 4, the supporting frame 4 and the battery cell framework 2 are fixed and spaced through the abutting columns 9, the heat conduction of the battery cell 1 to the two electrodes 6 is reduced, the normal temperature rise balance of the whole battery pack is ensured, and the effect of prolonging the service life of the battery pack is achieved.

In the present embodiment, as shown in fig. 6, the number of the battery cells 1 is ten, the battery cells 1 are arranged in two upper and lower layers, and the two upper and lower layers are respectively provided with five battery cells 1, the battery cells 1 are arranged in parallel, and the spacing distance between adjacent battery cells 1 is the same, which is more convenient for the arrangement of the filler 3, on the other hand, the filler 3 comprises a single-side filler 12 and a central filler 13, specifically, the single-side filler 12 is located outside the battery cells 1 and directly contacts with the surface of the battery cells 1 through the filling convex portions 19, the central filler 13 is located between two layers of the battery cells 1, the filling convex portions 19 are provided on both sides of the central filler 13 to directly contact with the surface of the battery cells 1, that is, the filler 3 comprises the single-side filler 12 and the central filler 13, the filling convex portions 19 are provided on one side of the single-side filler 12, the filling convex portions 19 are provided on both sides of the central filler, thereby the effectual every electric core 1 surface of assurance can both closely laminate with obturator 3, the effectual temperature rise that reduces electric core 1 to guarantee that the normal temperature rise of whole battery package is balanced.

Example 2:

compared with embodiment 1, in this embodiment, as shown in fig. 3, the cell framework 2 includes a first framework 7 and a second framework 8, the first framework 7 and the second framework 8 are respectively disposed at two ends of the cell 1, both sides of the first framework 7 and the second framework 8 are respectively provided with a connecting latch 14 and a fastening pin 15, the connecting latch 14 on the first framework 7 is matched and fastened with the fastening pin 15 on the second framework 8, and the connecting latch 14 on the second framework 8 is matched and fastened with the fastening pin 15 on the first framework 7, so as to fix the cell 1 between the first framework 7 and the second framework 8;

particularly, cooperation through first skeleton 7 and second skeleton 8 is with electric core 1 rigidity, electric core 1 fixes between first skeleton 7 and second skeleton 8 promptly, and first skeleton 7 and second skeleton 8 set up relatively, it is corresponding with the 15 positions of knot pin on the second skeleton 8 that connecting lock catch 14 on the first skeleton 7 is connected the position of foot, connecting lock catch 14 on the second skeleton 8 is corresponding with the 15 positions of knot pin on the first skeleton 7, thereby it is fixed with the lock joint of lock joint foot 15 through two pairs of connecting lock catch 14, with first skeleton 7, second skeleton 8 and electric core 1 are fixed completely each other.

Example 3:

compared with embodiment 3, as shown in fig. 5, in this embodiment, a plurality of cell sleeves 17 for sleeving the cell 1 are further disposed on the first frame 7 and the second frame 8, a built-in groove 16 is disposed between the cell sleeves 17 and the cell sleeves 17, and the built-in groove 16 may be correspondingly matched and clamped with the abutting column 9, so that the distance between the filling body 3 and the cell frame 2 is 0.5mm or more, and the heat conduction from the cell 1 to the two electrodes 6 is reduced.

Example 4:

in this embodiment, as shown in fig. 4, a cell fixing hole 18 corresponding to the cell 1 is further formed in the supporting side plate 11, and the cell fixing hole 18 is used to assist the cell 1 and the supporting frame 4 to be fixed to each other; the support frame 4 is further provided with an upper press plate 10, the upper press plate 10 being used for pressing the upper part of the fixed packing 3, i.e. for pressing the upper one-sided packing 12.

The bottom of the supporting frame 4 is hollow, the battery pack with the efficient heat dissipation structure further comprises a battery pack bottom shell 5, and the battery pack bottom shell 5 is used for pressing and fixing the lower part of the filler 3, namely a single-side filler 12 used for pressing the lower part; the supporting frame 4 is further provided with a lock catch slot 20, and the lock catch slot 20 can be connected with the lock catch 14 in a clamping manner, so that the supporting frame 4 is further fixed.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack with a high-efficiency heat dissipation structure, the battery pack with the high-efficiency heat dissipation structure comprising: the battery comprises a plurality of battery cells (1), battery cell frameworks (2) arranged at two ends of the battery cells (1) and used for fixing the battery cells (1), a filler (3) coated on the surface of the battery cells (1), and a supporting frame (4) sleeved on the battery cells (1) and used for fixing the filler (3);

support frame (4) including relative parallel arrangement two support curb plates (11) and set up two support abutment post (9) of curb plate (11) surface, support frame (4) through abutment post (9) with electric core skeleton (2) butt is fixed, obturator (3) both ends are passed through support frame (4) with electric core skeleton (2) are spaced apart.

2. The battery pack with the efficient heat dissipation structure of claim 1, wherein the cell framework (2) comprises a first framework (7) and a second framework (8), the first framework (7) and the second framework (8) are respectively disposed at two ends of the cell (1), two sides of the first framework (7) and the second framework (8) are respectively provided with a connecting lock catch (14) and a buckling pin (15), the connecting lock catch (14) on the first framework (7) is in fit buckling connection with the buckling pin (15) on the second framework (8), and the connecting lock catch (14) on the second framework (8) is in fit buckling connection with the buckling pin (15) on the first framework (7), so that the cell (1) is fixed between the first framework (7) and the second framework (8).

3. The battery pack with the efficient heat dissipation structure according to claim 2, wherein the first frame (7) and the second frame (8) are further provided with a plurality of cell sleeves (17) for sleeving the cells (1), a built-in groove (16) is provided between the cell sleeves (17) and the cell sleeves (17), and the built-in groove (16) can be correspondingly matched with the abutting columns (9) and clamped and fixed.

4. The battery pack with the efficient heat dissipation structure as recited in claim 1, wherein the supporting side plate (11) is further provided with a cell fixing hole (18) corresponding to the cell (1).

5. The battery pack with the efficient heat dissipation structure as recited in claim 1, wherein the filler (3) is made of a phase-change material.

6. The battery pack with the efficient heat dissipation structure as recited in claim 1, wherein the filling body (3) comprises a single-side filling body (12) and a central filling body (13), one side of the single-side filling body (12) is provided with a filling convex portion (19), both sides of the central filling body (13) are provided with filling convex portions (19), and the filling convex portions (19) are used for filling gaps between adjacent battery cells (1).

7. The battery pack with a high-efficiency heat dissipation structure according to claim 1, wherein the support frame (4) is further provided with an upper pressing plate (10), and the upper pressing plate (10) is used for pressing and fixing the upper part of the filling body (3).

8. The battery pack with the efficient heat dissipation structure as recited in claim 1, wherein a separation distance between the filling body (3) and the cell skeleton (2) is greater than or equal to 0.5 mm.

9. The battery pack with the efficient heat dissipation structure as recited in claim 7, wherein the supporting frame (4) is hollowed at the bottom, the battery pack with the efficient heat dissipation structure further comprises a battery pack bottom case (5), and the battery pack bottom case (5) is used for pressing and fixing the lower part of the filling body (3).

10. The battery pack with the efficient heat dissipation structure as claimed in claim 2, wherein the supporting frame (4) is further provided with a locking slot (20), and the locking slot (20) can be clamped by the connecting lock (14).