CN218334053U

CN218334053U - Battery module

Info

Publication number: CN218334053U
Application number: CN202221794974.8U
Authority: CN
Inventors: 井志; 张京京; 陈保国; 刘峰
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-01-17
Anticipated expiration: 2032-07-12

Abstract

The utility model provides a battery module, which comprises an integrated frame body and an end plate; the integrated frame body comprises a top plate, a bottom plate and two side plates which are oppositely arranged, the top plate, the bottom plate and the two side plates are encircled to form an integrated frame body structure with an internal cavity, the integrated frame body is provided with an opening along the extending direction of the internal cavity, and the end plates are fixed at the opening; the outside of integral type framework is equipped with the fixing base, and the fixing base is used for fixed battery module. The battery module of the utility model can improve the constraint of the frame on the expansion force of the battery core; the module mounting points are arranged on the integrated frame, so that the overall strength of the module and the overall strength of the whole bag can be improved; the frame and the upper cover in the prior art are integrated into an integrated frame, so that the number of parts is reduced, and the machining process of matching parts is reduced; the frame + upper cover integrated assembly and welding of the existing scheme are reduced, and the assembling and welding procedures are reduced.

Description

Battery module

Technical Field

The utility model belongs to power battery accessories field especially relates to a battery module.

Background

The prior art scheme is generally an end plate + frame + upper cover structure, and the mounting point is on the end plate. The defects of the prior art include that 1) for a soft package battery cell, after the module is integrated, the expansion direction of the battery cell is the thickness direction of the battery cell, namely the width direction of the module, and the constraint on the expansion force is relatively low due to the split structure of the frame and the upper cover; 2) The installation point is arranged on the end plate, the end plate is welded with the frame, and the structural strength is relatively low; 3) The machining part at the part matching position is more, the parts are more, and the working procedures are more; 4) The integrated module has more rear welding parts.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a battery module to solve the not enough of prior art, integrate prior art's frame and upper cover into integral type frame, and arrange the mounting point on integral type frame.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a battery module comprises an integrated frame body and end plates;

the integrated frame body comprises a top plate, a bottom plate and two side plates which are oppositely arranged, the top plate, the bottom plate and the two side plates are encircled to form an integrated frame body structure with an internal cavity, the integrated frame body is provided with an opening along the extending direction of the internal cavity, and the end plates are fixed at the opening;

and a fixing seat is arranged on the outer side of the integrated frame body and used for fixing the battery module.

Furthermore, the end plate is equipped with two, the integral type framework is followed the extending direction's of inside cavity both ends all are equipped with the opening, two the end plate is fixed respectively two the opening part.

Furthermore, the fixing seats are arranged on the side plates, the number of the fixing seats is two, and the two fixing seats are symmetrically arranged on the two side plates.

Furthermore, the fixing base comprises a fixing plate, and fixing holes are formed in the fixing plate.

Further, the fixing plate is arranged along the horizontal direction.

Further, the fixing plate is located in the middle of the side plate in the height direction.

Furthermore, the end plate is connected with the integrated frame structure in a welding mode or a clamping mode.

Furthermore, the integral frame structure and the fixed seat are an integral profile extrusion process.

Compared with the prior art, a battery module have following advantage:

the utility model discloses a battery module, this scheme can improve the constraint of frame to electric core bulging force; the module mounting point is arranged on the integrated frame, so that the overall strength of the module and the overall strength of the whole bag can be improved; the frame and the upper cover in the prior art are integrated into an integrated frame, so that the number of parts is reduced, and the machining process of matching parts is reduced; the scheme reduces the frame and upper cover integrated assembly and welding of the existing scheme, and reduces the assembling and welding procedures.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a 3P8S cell pack according to an embodiment of the present invention;

fig. 2 is a partial schematic view of the overall structure according to the embodiment of the present invention;

fig. 3 is a schematic view of the insulating cover according to the embodiment of the present invention installed on the outer side of the copper bar 3;

FIG. 4 is a schematic view illustrating an installation process of the 3P8S plug set sleeved in the integrated frame according to the embodiment of the present invention;

fig. 5 is a schematic view of an installation structure of an end plate and an integrated frame according to an embodiment of the present invention;

fig. 6 is a schematic view of a partial display of the module integrated into the battery pack case according to an embodiment of the present invention;

fig. 7 is an exploded view of a module structure according to an embodiment of the present invention.

Description of reference numerals:

1. an electric core; 2. an insulating member; 3. copper bars are arranged; 4. a low voltage collection line and interface; 5. an insulating cover; 6. an integral frame structure; 61. an integrated frame body; 62. a fixing plate; 7. an end plate; 8. a battery pack box body; 9. battery package crossbeam.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 7, a battery module includes an integrated frame body 61 and an end plate 7;

the integrated frame body 61 comprises a top plate, a bottom plate and two opposite side plates, the top plate, the bottom plate and the two side plates are surrounded to form an integrated frame body structure 6 with an internal cavity, the integrated frame body 61 is provided with an opening along the extending direction of the internal cavity, and the end plate 7 is fixed at the opening; the outside of integral type framework 61 is equipped with the fixing base, the fixing base is used for fixing the battery module. Still include insulator 2, a plurality of copper bar 3, low pressure acquisition line and interface 4, insulating cover 5 and 3P8S electric core group, the outside suit of 3P8S electric core group is to 6 inner walls of integral type frame construction, insulator 2 is installed respectively at 3P8S electric core group both ends, and line and interface 4 are gathered to 2 mid-mounting low pressure of every insulator, and a plurality of copper bars 3 are installed respectively to 2 both sides of every insulator, and an insulating cover 5 is cup jointed in the 3 outsides of copper bar. This soft packet of electricity core module structure of integral type frame possesses following advantage: 1) The constraint of the frame on the expansion force of the battery core can be improved, and the service life of the battery is prolonged; 2) The mounting points are arranged on the integrated frame, so that the strength is improved; 3) The integrated frame reduces the number of parts, reduces the machining process of matching parts, improves the efficiency and reduces the cost; 4) The assembling and welding procedures are reduced, the efficiency is improved, and the cost is reduced.

The 3P8S electric core group comprises a plurality of electric cores 1, and the plurality of electric cores 1 are vertically placed and stacked into the 3P8S electric core group in a series-parallel connection mode. The number of the battery cores 1 is 24. In actual use, the number of the battery cells 1 is not particularly limited, and may be determined according to actual situations.

The number of the copper bars 3 is not less than 4. When actually using, the quantity of copper bar 3 also does not do specifically and restricts, can be decided according to actual conditions, and in this embodiment, the quantity of copper bar 3 is 4.

The end plate 7 is equipped with two, the integral type framework 61 is followed the extending direction's of inside cavity both ends all are equipped with the opening, two the end plate 7 is fixed respectively two the opening part. An end plate 7 is sleeved on the outer side of each insulating cover 5. The end plate 7 serves to protect the devices inside the insulating cover 5.

Still include battery package box 8 and a plurality of battery package crossbeam 9, the bottom plate installation is to the battery package box 8 in, the inside electric core group body that cup joints of integral type frame structure 6, battery package box 8 is cuboid box type structure. The battery pack box body 8 is internally provided with a plurality of battery pack cross beams 9, and the plurality of battery pack cross beams 9 are arranged in parallel. The integrated frame structure 6 is placed between two adjacent battery pack beams 9. In practical use, the number of the battery pack beams 9 is not particularly limited, and may be determined according to practical situations, and in this embodiment, the number of the battery pack beams 9 is 6.

The fixing seats are arranged on the side plates, the number of the fixing seats is two, and the two fixing seats are symmetrically arranged on the two side plates.

The fixing seat comprises a fixing plate 62, and a fixing hole is formed in the fixing plate 62. The fixing plate 62 is disposed in a horizontal direction. The fixing plate 62 is located at the middle of the side plate in the height direction. The fixing plates 62 are rectangular strip-shaped structures, and each fixing plate 62 is mounted to one battery pack beam 9. A plurality of bolt holes have evenly been seted up on fixed plate 62, and when the in-service use, thereby the staff can pass through the bolt hole with the screw and fix integral type frame construction 6 to battery package box 8 in, and bolt hole quantity does not specifically limit, can be decided according to actual conditions, as long as guarantee can fix integral type frame construction 6 can.

The end plate 7 is connected with the integrated frame body structure 6 in a welding mode or a clamping mode.

The integrated frame structure 6 and the fixed seat are an integrated profile extrusion process.

The utility model/the invention belongs to power battery accessories field especially relates to a battery module, is applicable to the structural style of laminate polymer core module.

Example 1

The utility model discloses a battery module, wherein electric core is according to erectting to put and pile up, wholly piles up the back, arranges insulating part, copper bar, sampling etc. realizes high-pressure series-parallel and low pressure sampling. And performing insulation treatment, and performing a shell entering process. The electric core group body after piling is placed in the integral type frame, and both ends are insulated and are protected and the fixed protection of high low pressure to weld end plate and integral type frame or joint, finally realize a battery module.

Fig. 1 is a cell stack, in which number 1 is a cell, and 24 cells are counted to form a stacked 3P8S cell group.

In fig. 2, the insulator numbered 2 supports and protects the copper bar numbered 3, and the cell groups consisting of 24 cells are connected in series-parallel connection according to a 3P8S series-parallel connection mode. And a low-voltage acquisition line and an interface of number 4 are arranged. And then, insulating and protecting the cell body, and coating the cell body with an insulating material.

In fig. 3, the number 5 of the insulation cover is used for carrying out insulation protection on the copper bar.

In fig. 4, the assembly of fig. 3 is placed into the integrated frame structure numbered 6, which is a profile extrusion process, and has low cost, high manufacturability, high strength and light weight.

In fig. 5, the end plate 7 is welded or snap-fitted to the integrated frame.

Fig. 6 is a partial illustration of the module being integrated into the battery pack case of number 8, the module being mountable by bolts to the mounting point of the integrated frame, and the battery pack beam of number 9. And does not occupy the space of the box body except the cross beam.

Fig. 7 is an exploded view illustration of the module.

1) Through the scheme of the utility model, the soft package battery cell is vertically placed and stacked, the frame is an integral frame, namely the upper cover and the frame are integrated into a whole, and the end plate is welded or clamped with the integral frame;

2) The mounting points are integrated on the integrated frame.

The existing technical scheme is generally split type: upper cover + frame, and mounting points are arranged on the end plates. This scheme is integrated with upper cover and frame, and the mounting point arranges on the integral type frame. In the aspects of machining process and manufacturability, the efficiency is improved, and the cost is reduced. In the aspect of assembly and welding, the welding of the upper cover and the frame is omitted, the efficiency is improved, and the cost is reduced. In addition, from the contrast in the aspect of the inflation suppression of the holistic structure of module and electric core, this integral type structure can effectual suppression module width direction be the bulging force of electric core thickness direction, can improve electric core life-span and performance.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module, its characterized in that: comprises an integrated frame body (61) and an end plate (7);

the integrated frame body (61) comprises a top plate, a bottom plate and two opposite side plates, the top plate, the bottom plate and the two side plates surround to form an integrated frame body structure (6) with an internal cavity, the integrated frame body (61) is provided with an opening along the extending direction of the internal cavity, and the end plate (7) is fixed at the opening;

the outer side of the integrated frame body (61) is provided with a fixing seat, and the fixing seat is used for fixing the battery module.

2. The battery module according to claim 1, wherein: the end plate is equipped with two, integral type framework (61) are followed the extending direction's of inside cavity both ends all are equipped with the opening, two end plate (7) are fixed respectively two the opening part.

3. The battery module according to claim 1, wherein: the fixing seats are arranged on the side plates, the number of the fixing seats is two, and the two fixing seats are symmetrically arranged on the two side plates.

4. The battery module according to claim 1, wherein: the fixing seat comprises a fixing plate (62), and fixing holes are formed in the fixing plate (62).

5. The battery module according to claim 4, wherein: the fixing plate (62) is arranged along the horizontal direction.

6. The battery module according to claim 4, wherein: the fixing plate (62) is located at the middle of the side plate in the height direction.

7. The battery module according to claim 1, wherein: the end plate (7) is connected with the integrated frame body structure (6) in a welding mode or in a clamping mode.

8. The battery module according to claim 1, wherein: the integrated frame structure (6) and the fixed seat are an integrated profile extrusion process.