CN218242037U

CN218242037U - Battery pack sheath

Info

Publication number: CN218242037U
Application number: CN202222697937.1U
Authority: CN
Inventors: 宋殿权; 王璞琪; 白秀辉; 尹洪波; 王伟; 马立双
Original assignee: Harbin Guangyu Electronics Co ltd
Current assignee: Harbin Guangyu Electronics Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-01-06
Anticipated expiration: 2032-10-13

Abstract

The utility model provides a group battery sheath, relates to a lithium cell protection device, for solving the easy atress of electric core utmost point post after the lithium cell equipment and damaging the problem. The novel pole post protective sleeve is arranged at the top of the battery pack, and the bottom protective sleeve is arranged at the bottom of the battery pack; a first electric core cavity and a second electric core cavity are arranged between the pole column sheath and the bottom sheath in parallel; the plurality of battery cells are respectively arranged in the first battery cell cavity and the second battery cell cavity; a limiting partition plate is arranged between the first battery core cavity and the second battery core cavity; the upper limiting column is arranged on the pole column sheath and used for realizing the upper and lower limiting of the battery pack, and the lower limiting column is arranged on the bottom sheath and used for realizing the left and right limiting of the battery pack; an aluminum bar is arranged in the aluminum bar protection cavity, and two adjacent battery cores on the left and right are connected together through the aluminum bar; and the two sides of the aluminum bar protection cavity are provided with a cell pole platform avoiding hole, and the pole of the cell is positioned in the cell pole platform avoiding hole. The method has the beneficial effects of higher stability and safety.

Description

Battery pack sheath

Technical Field

The utility model relates to a lithium battery protection device.

Background

With the increasing of the inventory of the double-wheel electric bicycle in China and the development of the lithium battery industry of the electric bicycle; the trend of lithium electrification of the two-wheel electric vehicle is more and more obvious, and along with the continuous improvement of the living standard of people, strict requirements on the weight, the speed, the motor power and the like of the electric bicycle are met; in order to meet these requirements, it is necessary to replace the heavy lead-acid battery with a light and safe lithium battery; general battery pack assembly: firstly, bonding a plurality of monomer battery cores together through double-sided adhesive tapes to form a module; secondly, installing, welding the bus bar and the wire harness, and thirdly, plastic film wrapping. Because the double-faced adhesive tape and the plastic film are both elastic structures, the distance between the battery cells can be changed in the production and use processes of the battery pack, and the connecting bar is welded on the battery cell pole and is of a rigid structure, so that the battery cell pole can be stressed, is harmful to the battery cell and can be damaged even after a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the easy atress of electric core utmost point post damaged after the lithium cell equipment, provided a group battery sheath.

The utility model discloses a battery pack sheath, which comprises a pole column sheath and a bottom sheath;

the pole protective sleeve is arranged at the top of the battery pack, and the bottom protective sleeve is arranged at the bottom of the battery pack; the battery pack comprises a plurality of battery cells; a first electric core cavity and a second electric core cavity are arranged between the pole column sheath and the bottom sheath in parallel; the plurality of battery cells are respectively arranged in the first battery cell cavity and the second battery cell cavity; a limiting partition plate is arranged between the first battery core cavity and the second battery core cavity;

an upper limiting column is arranged at the edge of the top surface of the pole column sheath and used for realizing the upper and lower limiting of the battery pack, and a lower limiting column is arranged on one side wall of the bottom sheath to realize the left and right limiting of the battery pack;

an aluminum bar protection cavity is further arranged in the middle of the top surface of the pole column sheath, an aluminum bar is arranged in the aluminum bar protection cavity, and two battery cells which are adjacent to each other on the left and right are connected together through the aluminum bar;

and the two sides of the aluminum bar protection cavity are provided with a cell pole platform avoiding hole, and the pole of the cell is positioned in the cell pole platform avoiding hole.

Furthermore, be equipped with first erection column on a lateral wall of utmost point post sheath, be equipped with the second erection column on a lateral wall of bottom sheath simultaneously to first erection column corresponds from top to bottom with the second erection column, carries out fixed mounting to the BMS keysets through first erection column and second erection column.

Further, first erection column is equipped with the internal thread respectively with the second erection column, and the BMS keysets is connected fixedly through the internal thread.

Furthermore, NFC plate limiting and avoiding tables are correspondingly arranged on the other side wall of the bottom sheath and the other side wall of the pole sheath; and the NFC board is fixedly installed through the NFC board limiting avoiding platform on the pole column sheath and the NFC board limiting avoiding platform on the bottom sheath.

Further, the NFC board limiting avoiding table is provided with a mounting hole;

the NFC board is arranged between the NFC board limiting avoiding platform of the column sheath 1 and the NFC board limiting avoiding platform of the bottom sheath in an inserting mode.

Furthermore, a limiting table for collecting the PCB is arranged on the pole sheath;

the acquisition PCB limiting table is arranged around the aluminum bar protection cavity, and the height of the table top of the acquisition PCB limiting table is larger than the height of the aluminum bar protection cavity after the aluminum bar is installed on the aluminum bar protection cavity.

The sheath has the advantages that the sheath not only effectively protects the shell of the battery cell and prevents the battery cell from being collided and damaged, through the left and right limiting of the lower limiting column and the upper and lower limiting of the upper limiting column, the stability and the safety of the battery pack in the pole column sheath and the bottom sheath are obviously improved, the risk of the battery pack moving in a battery box body after being molded by a plastic film is avoided, but also the battery cell can be effectively prevented from being dislocated when the lithium battery cells are stacked, the rework is avoided, the working efficiency is improved, and meanwhile, the battery cell can be effectively protected when the aluminum bar is welded.

Drawings

Fig. 1 is a schematic view of an overall structure of a battery pack sheath according to a first embodiment, in which an aluminum busbar is disposed in an aluminum busbar protection cavity, and an end cap is disposed in a cell post platform avoiding hole;

FIG. 2 is a schematic view of a bottom jacket according to an embodiment;

FIG. 3 is a top view of a pole piece sheath according to one embodiment;

FIG. 4 is a bottom view of a pole piece sheath according to one embodiment.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, and a battery pack sheath according to the present embodiment includes a pole sheath 1 and a bottom sheath 2;

the pole column jacket 1 is arranged at the top of the battery pack 3, and the bottom jacket 2 is arranged at the bottom of the battery pack 3; the battery pack 3 includes a plurality of cells; a first electric core cavity 10 and a second electric core cavity 11 are arranged between the pole column jacket 1 and the bottom jacket 2 in parallel; the plurality of battery cells are respectively arranged in the first battery cell cavity 10 and the second battery cell cavity 11; a limiting partition plate is arranged between the first electric core cavity 10 and the second electric core cavity 11; the limiting partition plate has a protection effect on the battery cells on the left side and the right side, and the battery cells on the left side and the right side are prevented from being contacted;

an upper limiting column 8 is arranged at the edge of the top surface of the pole column sheath 1, the upper limiting column 8 is used for realizing the upper and lower limiting of the battery pack 3, and a lower limiting column 5 is arranged on one side wall of the bottom sheath 2 so as to realize the left and right limiting of the battery pack 3;

an aluminum bar protection cavity 12 is further arranged in the middle of the top surface of the pole column sheath 1, an aluminum bar is arranged in the aluminum bar protection cavity 12, and two battery cells which are adjacent to each other on the left and right are connected together through the aluminum bar;

cell pole post platform avoiding holes 13 are formed in the two sides of the aluminum bar protection cavity 12, and poles of the cell are located in the cell pole post platform avoiding holes 13.

In the present embodiment, the first core cavity 10 and the second core cavity 11 are respectively matched with the size of the battery cell group package, a limiting partition plate is arranged between the first core cavity 10 and the second core cavity 11,

the length of the lower limiting column 5 is determined by the length of a battery box body for placing the battery pack sheath; the height of the upper limiting column 8 is determined by the height of the battery box body, and the lower limiting column 5 and the upper limiting column 8 are used for preventing the battery pack sheath from moving in the battery box body;

the aluminum bar protection cavity 12 has a protection effect on the busbar provided with the battery cell for connecting and welding the aluminum bar, so that errors in installation are prevented, and short circuit can also be prevented; the size of the aluminum row protection cavity 12 is determined by the size of the aluminum row;

an end cover is arranged outside the electric core pole pylon hiding hole 13; silica gel pads are arranged in the first electric core cavity 10 and the second electric core cavity 11, and silica gel pad avoiding holes 14 are formed in the first electric core cavity 10 and the second electric core cavity 11 of the bottom sheath 2.

The second embodiment is as follows: in this embodiment, a first mounting post 7 is disposed on one side wall of the pole sheath 1, a second mounting post 4 is disposed on one side wall of the bottom sheath 2, the first mounting post 7 and the second mounting post 4 vertically correspond to each other, and the BMS interposer is fixedly mounted by the first mounting post 7 and the second mounting post 4.

In this embodiment, the battery pack sheath integrates a BMS patch panel.

The third concrete implementation mode: in this embodiment, the first mounting post 7 and the second mounting post 4 are respectively provided with an internal thread, and the BMS patch panel is connected and fixed by the internal thread.

The fourth concrete implementation mode: in the present embodiment, the battery pack sheath according to the first embodiment is further limited, in the present embodiment, an NFC board limiting and avoiding table 6 is correspondingly disposed on the other side wall of the bottom sheath 2 and the other side wall of the pole sheath 1; fixed mounting is carried out to the NFC board through the spacing platform 6 of dodging of NFC board on the utmost point post sheath 1 and the spacing platform 6 of dodging of NFC board on the sheath 2 of bottom.

In this embodiment, the battery pack sheath integrates an NFC board; the size of the NFC board limiting avoiding platform is matched with the size of the NFC board.

The fifth concrete implementation mode: in this embodiment, a battery pack sheath according to the first embodiment is further limited, and in this embodiment, the NFC board limiting avoiding table 6 is provided with a mounting hole;

the NFC board sets up through the mode of pegging graft and avoids between platform 6 and the spacing platform 6 of avoiding of NFC board of bottom sheath 2 at the spacing platform 6 of avoiding of NFC board of post sheath 1.

The sixth specific implementation mode: in the present embodiment, the battery pack sheath according to the first embodiment is further limited, in the present embodiment, the post sheath 1 is further provided with a collecting PCB board limiting table 9;

the acquisition PCB limiting table 9 is arranged around the aluminum row protection cavity 12, and the height of the table top of the acquisition PCB limiting table 9 is larger than that of the aluminum row protection cavity 12 after the aluminum row is installed.

In this embodiment, the battery pack sheath integrates a collection PCB board limit station.

The above description is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can arrange any change according to the electric core within the technical scope disclosed in the present invention, and any integrated function should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A battery pack sheath, characterized in that the sheath comprises a pole sheath (1) and a bottom sheath (2);

the pole column jacket (1) is arranged at the top of the battery pack (3), and the bottom jacket (2) is arranged at the bottom of the battery pack (3); the battery pack (3) comprises a plurality of battery cells; a first electric core cavity (10) and a second electric core cavity (11) are arranged between the pole column sheath (1) and the bottom sheath (2) side by side; the plurality of battery cells are respectively arranged in the first battery cell cavity (10) and the second battery cell cavity (11); a limiting partition plate is arranged between the first electric core cavity (10) and the second electric core cavity (11);

an upper limiting column (8) is arranged at the edge of the top surface of the pole column sheath (1), the upper limiting column (8) is used for realizing the upper and lower limiting of the battery pack (3), and a lower limiting column (5) is arranged on one side wall of the bottom sheath (2) so as to realize the left and right limiting of the battery pack (3);

an aluminum bar protection cavity (12) is further arranged in the middle of the top surface of the pole column sheath (1), an aluminum bar is arranged in the aluminum bar protection cavity (12), and two battery cells which are adjacent to each other on the left and right are connected together through the aluminum bar;

and two sides of the aluminum bar protection cavity (12) are provided with electric core pole post platform avoiding holes (13), and poles of the electric core are positioned in the electric core pole post platform avoiding holes (13).

2. The battery pack sheath according to claim 1, wherein a first mounting column (7) is arranged on one side wall of the pole sheath (1), a second mounting column (4) is arranged on one side wall of the bottom sheath (2), the first mounting column (7) corresponds to the second mounting column (4) vertically, and the BMS adapter plate is fixedly mounted through the first mounting column (7) and the second mounting column (4).

3. The battery pack sheath according to claim 2, wherein the first mounting post (7) and the second mounting post (4) are respectively provided with an internal thread, and the BMS adapter plate is fixedly connected through the internal thread.

4. The battery pack sheath according to claim 2, wherein an NFC board limiting and avoiding table (6) is correspondingly arranged on the other side wall of the bottom sheath (2) and the other side wall of the pole sheath (1); the NFC board is fixedly installed through the NFC board limiting avoiding platform (6) on the pole column sheath (1) and the NFC board limiting avoiding platform (6) on the bottom sheath (2).

5. A battery pack sheath according to claim 4, characterized in that the NFC board limiting escape platform (6) is provided with mounting holes;

the NFC board is arranged between the NFC board limiting avoiding platform (6) of the column sheath (1) and the NFC board limiting avoiding platform (6) of the bottom sheath (2) in a plugging mode.

6. The battery pack sheath according to claim 1, wherein the pole sheath (1) is further provided with a collection PCB limiting table (9);

the acquisition PCB limiting table (9) is arranged around the aluminum row protection cavity (12), and the height of the table top of the acquisition PCB limiting table (9) is larger than that of the aluminum row protection cavity (12) after the aluminum row is installed.