CN214848826U

CN214848826U - Simplified battery pack

Info

Publication number: CN214848826U
Application number: CN202120984174.1U
Authority: CN
Inventors: 孔威杰
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-11-23
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a battery package of simplifying. The battery pack includes: a case having an open top; the electric core group is arranged in the shell, the first end of the electric core group is abutted against the first end of the shell, and the second end of the electric core group is arranged at intervals with the second end of the shell; the end plate is fixed in the shell and is abutted against the second end of the electric core group; the main control board is arranged in the interval between the second end of the electric core group and the second end of the shell; and the cover plate is arranged on the top of the shell in a covering manner. The utility model discloses a battery package simple structure, the part is less, and the quality is lighter, arranges rationally, simple to operate, and whole size is less.

Description

Simplified battery pack

Technical Field

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

Background

The battery pack is a large-capacity assembled battery formed by combining a plurality of cell units, such as an electric vehicle battery. The conventional square lithium ion battery pack has a complex structure, more parts and complex installation process, so that the die sinking cost and the material cost are higher, the cost of the whole battery pack is higher, the assembly efficiency is low due to more parts and complex installation, and the production efficiency is seriously reduced; in addition, the complicated structure results in a battery pack having a large size and weight, which is disadvantageous for the weight reduction of the battery.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a simple structure, the part is less, and the quality is lighter, arranges reasonable compactness, and whole size is less, assembles convenient and fast's simplified battery package.

In order to achieve the above object, the utility model adopts the following scheme:

a simplified battery pack, comprising:

a case having an open top;

the electric core group is arranged in the shell, the first end of the electric core group is abutted against the first end of the shell, and the second end of the electric core group is arranged at intervals with the second end of the shell;

the end plate is fixed in the shell and is abutted against the second end of the electric core group;

the main control board is arranged in the interval between the second end of the electric core group and the second end of the shell;

and the cover plate is arranged on the top of the shell in a covering manner.

In an optional embodiment of the present invention, the battery pack further includes:

the pressing strip is arranged at the top of the electric core group in a pressing mode, and two ends of the pressing strip are fixedly connected with the shell (110) and the end plate respectively.

In an optional embodiment of the present invention, the pressing bar is disposed between the two cell assemblies, and the cover plate is disposed between the two cell assemblies.

In an alternative embodiment of the present invention, the top of the end plate is provided with a horizontally extending first mounting lug, and the pressing strip is fixed to the first mounting lug.

In an alternative embodiment of the present invention, the simplified battery pack further comprises:

the aluminum row is arranged at the top of the electric core group;

a battery BMS module disposed in an interval between the second end of the battery cell pack and the second end of the case;

and the battery BDU module is arranged on the main control board.

In an alternative embodiment of the present invention, the cell assembly is provided between the shells, the cell assembly is provided between the end plates, and the aluminum row is provided with an insulating sheet between the cover plates.

The utility model relates to an optional embodiment, the second end of electric core group with the bottom of the interval between the second end of casing is provided with the mounting panel, the main control board reaches battery BMS module all locates on the mounting panel.

In an alternative embodiment of the present invention, the bottom of the end plate is provided with a horizontally extending second mounting lug, which is fixed to the mounting plate.

In an alternative embodiment of the present invention, the end plate is provided with a reinforcing rib.

In an alternative embodiment of the present invention, a gasket is disposed between the cover plate and the housing.

The utility model discloses an useful part lies in: wherein three side of electric core group is direct with the three side butt of casing, it is spacing and fixed to utilize the casing, set up the another side that the end plate comes spacing electric core group in the casing for form the interval between another side of electric core group and the casing, this interval is used for installing the main control board, the top accessible apron of electric core group is spacing, whole battery package structural arrangement is reasonable, and is simple compact, and the part is less, and the quality is lighter, and overall dimension is less, and equipment convenient and fast, and production efficiency is higher.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack according to the present invention;

fig. 2 is a schematic view of an exploded structure of the battery pack of the present invention;

fig. 3 is a schematic view of a first cross-sectional structure of a battery pack according to the present invention;

fig. 4 is a schematic diagram of a second cross-sectional structure of the battery pack of the present invention;

fig. 5 is a schematic view of the internal structure of the middle housing of the present invention.

In the figure:

100. a battery pack;

110. a housing; 111. a gasket; 120. the electric core group; 130. an end plate; 131. a first mounting lug; 132. a second mounting lug; 133. reinforcing ribs; 140. layering; 150. a main control board; 151. a battery BMS module; 152. a battery BDU module; 160. aluminum bars; 170. a cover plate; 180. an elastic pad; 190. an insulating sheet; 200. and (7) mounting the plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be understood by those of ordinary skill in the art as the case may be.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The utility model provides a battery package of simplifying, figure 1 is the utility model discloses well battery package's structural schematic, figure 2 is the utility model discloses well battery package's decomposition structure schematic, figure 3 is the utility model discloses well battery package's first cross section structure schematic. Referring to fig. 1 to 3, a battery pack 100 of the present invention includes a housing 110, a battery cell pack 120, an end plate 130, a pressing bar 140, a main control board 150, an aluminum row 160, and a cover plate 170.

The top of the casing 110 is open, that is, the casing 110 includes four side walls and a bottom wall, so that the electric core pack 120, the end plate 130, the main control plate 150, and other parts are installed inside the casing 110 from the top of the casing 110.

Referring to fig. 2 and 3, the battery pack 120 is disposed in the casing 110, and the battery pack 120 includes a plurality of battery cells. The electric core group 120 and the casing 110 both have a first end and a second end, the first end and the second end respectively correspond to the rear end and the front end of fig. 1, the first end of the electric core group 120 is abutted against the first end of the casing 110, and the second end of the electric core group 120 and the second end of the casing 110 are arranged at intervals. Referring to the drawings, that is, the rear end of the electric core assembly 120 abuts against the rear side wall of the housing 110, the left and right sides of the electric core assembly 120 abut against the left and right side walls of the housing 110, and the front end of the electric core assembly 120 is limited by an end plate 130, and the end plate 130 is preferably a metal end plate. The end plate 130 is fixed in the casing 110, and the end plate 130 abuts against the front end of the electric core set 120, so that the front side of the electric core set 120 is not limited by the side wall of the casing 110, and an interval is formed between the front end of the electric core set 120 and the front side wall of the casing 110, and the interval can be used for installing other parts such as the main control board 150. The utility model discloses in, directly utilize casing 110's lateral wall to come to carry on spacingly to electric core group 120 for overall structure is simpler, and the part is less, thereby makes whole battery package 100 volumes littleer. The top of the electric core assembly 120 can be limited by the pressing bar 140, or can be limited by the cover plate 170 directly, which is not limited herein. As shown in fig. 2 and 3, the pressing bar 140 is pressed on the top of the electric core assembly 120, the pressing bar 140 is disposed along the front-back direction, and both ends of the pressing bar 140 are respectively and fixedly connected with the housing 110 and the end plate 130, so that the pressing bar 140 is stably pressed on the top of the electric core assembly 120 to prevent the electric core assembly 120 from moving. The top of the electric core assembly 120 is limited by the pressing bar 140, so that the electric core assembly 120 is more stable, and the aluminum bar 160 is mounted on the top of the electric core assembly 120 in a follow-up manner.

As shown in fig. 2, an aluminum row 160 is disposed on the top of the cell group 120, and the aluminum row 160 is used for unifying the positive electrode tab and the negative electrode tab of the plurality of cell units. Referring to fig. 2, there are two aluminum rows 160, the two aluminum rows 160 are symmetrically disposed left and right, and the pressing bar 140 is pressed at the middle position of the electric core assembly 120 in the left and right direction, so as to prevent the pressing bar 140 from interfering with the aluminum rows 160.

Referring to fig. 2 and 3, the main control board 150 is disposed in the gap between the front end of the electric core assembly 120 and the front end of the housing 110. Particularly, the front end of the electric core group 120 passes through the end plate 130 to be fixed, so that an accommodating space is formed between the front end of the electric core group 120 and the casing 110, the main control board 150 is installed by using the accommodating space, the overall layout is more reasonable, the assembly is more convenient, and the production efficiency of the battery pack 100 is favorably improved.

As shown in fig. 2 and 3, the battery pack 100 further includes a battery BMS module 151 and a battery BDU module 152. The battery BMS module 151 is a battery management system, is a control system that can protect the safety of the power battery, can constantly monitor the use state of the battery, alleviates the inconsistency of the battery pack through necessary measures, and provides guarantee for the safety of the battery. The battery BDU module 152 is then similar to the power distribution box for the battery. The battery BDU module 152 is mounted on the main control board 150, and the battery BMS module 151 is mounted in the space between the core pack 120 and the case 110 together with the main control board 150. It can be understood that the battery BMS module 151 is electrically connected to the main control board 150.

The cover plate 170 covers the top of the casing 110, and further limits and fixes the electric core assembly 120, and simultaneously seals the top of the casing 110, so that a closed space is formed in the casing 110, and a safety protection effect is exerted on devices in the casing 110.

In one embodiment, as shown in fig. 2 and 4, elastic pads 180 are disposed between the pressing strip 140 and the electric core assembly 120 and between the cover plate 170 and the electric core assembly 120 to protect the electric core assembly 120 and prevent the electric core assembly 120 from being damaged by the pressing strip 140 and the cover plate 170. The elastic pad 180 is strip-shaped to reduce weight, save material and reduce the overall volume. Preferably, the elastic pad 180 is a silicone pad.

As shown in fig. 2, insulating sheets 190 are disposed between the electric core assembly 120 and the casing 110, and between the aluminum row 160 and the cover plate 170, so as to realize electric insulation and avoid electric leakage of the electric core. Specifically, during installation, the insulating sheet 190 may be firstly placed in the casing 110, the electric core assembly 120 is then placed on the insulating sheet 190 in the casing 110, after the aluminum row 160 is installed on the electric core assembly 120, the insulating sheet 190 is covered on the aluminum row 160, and then the cover plate 170 is covered on the aluminum row 160.

Referring to fig. 3 and 5, in one embodiment, a mounting plate 200 is disposed at the bottom of the space between the electric core pack 120 and the case 110, and the main control board 150 and the battery BMS module 151 are disposed on the mounting plate 200. During the installation, can all install the back on mounting panel 200 with main control board 150 and battery BMS module 151 earlier, install mounting panel 200 to casing 110 again in, make the installation more modularization, the installation rate is faster. As shown in fig. 3, the mounting plate 200 is spaced from the bottom of the housing 110 to provide a mounting height for the screws penetrating the bottom of the mounting plate 200. The main control board 150 is directly fixed to the mounting plate 200 by screws, and the battery BMS module 151 is mounted to the mounting plate 200 by a mounting bracket.

As shown in fig. 2 and 5, a first mounting lug 131 extending horizontally and forward is disposed on the top of the end plate 130, and a bead 140 is fixed to the first mounting lug 131. Corresponding mounting holes are formed in the first mounting lug 131 and the pressing strip 140, and screws sequentially penetrate through the mounting holes in the pressing strip 140 and the first mounting lug 131 and then are locked. The first mounting lug 131 is arranged to mount the batten 140, so that mounting holes can be conveniently arranged on the end plate 130 to fix the batten 140 under the condition that the thickness of the end plate 130 is not increased, and weight reduction and space saving are facilitated.

Referring to fig. 2 and 5, the bottom of the end plate 130 is provided with a second mounting lug 132 extending horizontally forward, and the second mounting lug 132 is fixed to the mounting plate 200. All set up the mounting hole that corresponds on second installation lug 132 and the mounting panel 200, pass the screw in proper order behind the mounting hole on second installation lug 132 and the mounting panel 200 locking can. As shown in fig. 2, there are two second mounting lugs 132, and the two second mounting lugs 132 are symmetrically disposed on the left and right sides of the end plate 130

As shown in fig. 5, the end plate 130 is further provided with a rib 133 to enhance the rigidity of the end plate 130 and prevent the end plate 130 from deforming. The reinforcing ribs 133 may be disposed horizontally or vertically, or may be disposed obliquely.

As shown in fig. 2, a gasket 111 is disposed between the cover plate 170 and the housing 110 to improve the reliability of locking therebetween. The gasket 111 is ring-shaped and is disposed around the top of the housing 110.

The utility model discloses battery package 100's installation step does:

attaching insulating sheets 190 to the bottom and side walls in the case 110;

the cell units are sequentially placed in the shell 110 to be assembled into the cell group 120, double-faced adhesive tapes are pasted among the cell units to play a role in extruding buffer allowance, and the Y-axis direction (namely the left and right direction) of the cell is limited by the left and right side walls of the shell 110;

the electric core assembly 120 is pre-pressed by an air cylinder in the X-axis direction (i.e., the front-back direction), and then the end plate 130 is fixed in the housing 110 by a screw;

an elastic pad 180 (a silicone pad) is locally adhered to the upper surface of the electric core group 120, and the pressing bar 140 is used for limiting the Z-axis direction (namely, the vertical direction) of the electric core group 120;

assembling and welding the aluminum bar 160, and mounting an insulating sheet 190 on the aluminum bar 160 to insulate and protect the pole and the aluminum bar 160;

installing a main control board 150, a battery BDU module 152 and a battery BMS module 151, and connecting a low-voltage wire harness and a high-voltage wire harness;

the cover plate 170 is installed, the elastic pad 180 (silicone pad) is padded at the position where the two sides of the electric core assembly 120 contact the cover plate 170, and the cover plate 170 is used for fixing the top end surface of the electric core assembly 120 in the Z-axis direction (i.e. the up-down direction) for the second time.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A simplified battery pack, comprising:

a housing (110) having an open top;

the electric core group (120) is arranged in the shell (110), the first end of the electric core group (120) is abutted to the first end of the shell (110), and the second end of the electric core group (120) and the second end of the shell (110) are arranged at intervals;

the end plate (130) is fixed in the shell (110) and is abutted against the second end of the electric core group (120);

the main control board (150) is arranged in the interval between the second end of the electric core group (120) and the second end of the shell (110);

and the cover plate (170) is arranged on the top of the shell (110) in a covering mode.

2. The simplified battery pack of claim 1, further comprising:

and the pressing strip (140) is pressed at the top of the electric core group (120), and two ends of the pressing strip (140) are respectively fixedly connected with the shell (110) and the end plate (130).

3. The simplified battery pack according to claim 2, wherein elastic pads (180) are disposed between the pressing bar (140) and the electric core pack (120) and between the cover plate (170) and the electric core pack (120).

4. The simplified battery pack according to claim 2, wherein the top of the end plate (130) is provided with a horizontally extending first mounting lug (131), and the bead (140) is fixed to the first mounting lug (131).

5. The simplified battery pack according to any one of claims 1 to 4, further comprising:

the aluminum row (160) is arranged at the top of the electric core group (120);

a battery BMS module (151) provided in an interval between the second end of the battery cell group (120) and the second end of the case (110);

and the battery BDU module (152) is arranged on the main control board (150).

6. The simplified battery pack according to claim 5, wherein insulation sheets (190) are disposed between the electric core pack (120) and the case (110), between the electric core pack (120) and the end plate (130), and between the aluminum row (160) and the cover plate (170).

7. The simplified battery pack according to claim 5, wherein a mounting plate (200) is provided at the bottom of the interval between the second end of the battery pack (120) and the second end of the case (110), and the main control board (150) and the battery BMS module (151) are both provided on the mounting plate (200).

8. The simplified battery pack according to claim 7, wherein the bottom of the end plate (130) is provided with a second horizontally extending mounting lug (132), the second mounting lug (132) being fixed to the mounting plate (200).

9. The simplified battery pack according to any of claims 1-4, characterized in that the end plate (130) is provided with stiffening ribs (133).

10. The simplified battery pack according to any of claims 1 to 4, characterized in that a gasket (111) is provided between the cover plate (170) and the housing (110).