CN218498229U - Battery module curb plate and battery module - Google Patents

Abstract

The application relates to a battery module side plate and a battery module, which comprise a side plate body, first bending parts arranged at two ends of the side plate body and second bending parts arranged on the first bending parts and used for fixing end plates; the first bending parts at two ends of the side plate body are bent towards the same side of the side plate body, and an accommodating space for accommodating the battery cell is formed between the side plate body and the first bending parts at two ends of the side plate body; the second bending portion and the side plate body are respectively located on the two side walls of the first bending portion. The fixed point that battery module curb plate and end plate easily became invalid among the correlation technique can be solved in this application, influences the structural strength of module frame, influences the technical problem of battery module stability.

Description

Battery module curb plate and battery module

Technical Field

The application relates to the technical field of batteries, in particular to a battery module side plate and a battery module.

Background

In the design of battery module, for further supporting and protecting electric core, can set up the part of bending in the both sides of module curb plate, be connected with the module end plate.

At present, the battery module in the market generally adopts the portion of bending the curb plate to live the end plate through the outline parcel of end plate narrow limit both sides, then carries out fixed mode. However, can exert outside pressure for the end plate when electric core inflation, the fixed department of curb plate and end plate can be stretched, and the fixed point easily loses efficacy (for example bolt fracture, welding is torn etc.), has influenced the structural strength of module frame, has influenced battery module's stability.

Disclosure of Invention

The embodiment of the application provides a battery module curb plate and battery module to solve among the correlation technique the fixed point of battery module curb plate and end plate and easily become invalid, influence the structural strength of module frame, influence the technical problem of battery module stability.

In a first aspect, a battery module side plate is provided, which includes:

a side plate body;

the first bending parts are arranged at two ends of the side plate body, the first bending parts at two ends of the side plate body are bent towards the same side of the side plate body, and a containing space for containing the battery cell is formed between the side plate body and the first bending parts at two ends of the side plate body;

and the second bending part and the side plate body are respectively positioned on the two side walls of the first bending part.

In some embodiments, the first bending portion is formed by bending an end portion of the side plate body.

In some embodiments, one of the first bent portions connected to the end portions of the side plate bodies;

or a plurality of first bending parts connected with the end part of the side plate body are arranged at intervals.

In some embodiments, the second bending portion is formed by bending an end portion of the first bending portion away from the side plate body.

In some embodiments, one of the second bending portions is connected to the first bending portion;

or the second bending parts connected to the first bending parts are multiple, and the multiple second bending parts are arranged at intervals.

In some embodiments, the second bending portion is provided with a through hole for riveting with an end plate;

or one wall surface of the second bending part is a welding surface for welding with the end plate;

or, a through hole is formed in the second bending part, and a nut used for being in threaded connection with the end plate is arranged on the through hole.

In some embodiments, the connection part of the first bending part and the side plate body,

and/or a circular arc-shaped transition structure is formed at the joint of the first bending part and the second bending part.

In some embodiments, the radius of the rounded transition structure is 0.5mm to 5mm.

In some embodiments, the second bend is square;

and/or the side plate body, the first bending part and the second bending part are made of aluminum alloy materials.

In a second aspect, a battery module is provided, which comprises the battery module side plate as described in any one of the above.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a battery module curb plate and battery module, the setting up of first portion of bending has increased the spacing area to electric core, when electric core inflation, first portion of bending replaces the end plate to bear outside pressure, the both sides that the end plate can be followed to the second portion of bending are fixed, the module structure weak point is that the pressure of end plate fixed point is showing and is reducing, frame strength has effectively been promoted, therefore, the fixed point of battery module curb plate and end plate easily became invalid in having solved relevant technology, influence the structural strength of module frame, influence the technical problem of battery module stability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic side plate view of a battery module according to an embodiment of the present disclosure;

fig. 2 is a top view of a side plate of a battery module according to an embodiment of the present disclosure;

fig. 3 is a front view of a side plate of a battery module according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a disassembled battery module according to an embodiment of the present disclosure;

fig. 5 is a schematic assembly view of a battery module according to an embodiment of the present disclosure.

In the figure: 1. a side plate body; 2. a first bending portion; 3. a second bending portion; 4. a through hole; 5. an end plate; 6. and (5) battery cores.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a battery module curb plate and battery module, and it can solve among the correlation technique the fixed point of battery module curb plate and end plate and easily become invalid, influences the structural strength of module frame, influences the technical problem of battery module stability.

Referring to fig. 1, 2 and 3, as a preferred example, the present application provides a battery module side plate, characterized in that it comprises: the side plate comprises a side plate body 1, first bending parts 2 arranged at two ends of the side plate body 1 and second bending parts 3 arranged on the first bending parts 2 and used for fixing an end plate 5; the first bending parts 2 at the two ends of the side plate body 1 are bent towards the same side of the side plate body 1, and a containing space for containing the battery cell 6 is formed between the side plate body 1 and the first bending parts 2 at the two ends of the side plate body; the second bending portion 3 and the side plate body 1 are respectively located on two side walls of the first bending portion 2, that is, the second bending portion 3 is located at one end of the first bending portion 2, and the side plate body 1 is located at the other end of the first bending portion 2.

In this application, the setting of first portion of bending 2 has increased the spacing area to electric core 6, when electric core 6 inflation, first portion of bending 2 replaces end plate 5 to bear outside pressure, the second portion of bending 3 can be fixed from the both sides of end plate 5, the module structure weak point is that the pressure of end plate 5 fixed point is showing and is reducing, frame strength has effectively been promoted, therefore, the fixed point of battery module curb plate and end plate 5 easily became invalid in having solved the correlation technique, influence the structural strength of module frame, influence the technical problem of battery module stability.

Specifically, in some preferred embodiments, the first bending portion 2 is formed by bending an end portion of the side panel body 1. The side plate has the advantages that the first bending part 2 and the side plate body 1 are integrated, no welding point exists, and the side plate is not easily damaged by external force.

Furthermore, the bending mode can adopt a sheet metal bending process or an extrusion molding process.

In some preferred embodiments, there is one first bending portion 2 connected to an end of the side panel body 1.

In other preferred embodiments, the end-connected first bent portion 2 of the side panel body 1 is provided in plurality, and the plurality of first bent portions 2 are provided at intervals (not shown). The advantage is that the design of a plurality of first bending parts 2 has increased the spacing area to electric core 6, makes fixed more firm.

Specifically, the length of the first bent portion 2 (i.e., the dimension of the first bent portion 2 in the Z direction) may be less than or equal to the length of the end of the side panel body 1 (i.e., the dimension of the side panel body 1 in the Z direction). When the length of the first bending part 2 is smaller than that of the end part of the side plate body 1, the accommodating space of the battery cell 6 is provided, and part of material cost is saved.

Specifically, in some preferred embodiments, the second bending portion 3 is formed by bending the end of the first bending portion 2 away from the side plate body 1. The advantage is that second bending portion 3 and first bending portion 2 are a whole, do not have the welding point, are difficult for being destroyed by external force.

In some preferred embodiments, one of the second bent portions 3 is connected to the first bent portion 2. Specifically, the length of the second bent portion 3 (i.e., the dimension of the second bent portion 3 in the Z direction) may be less than or equal to the length of the first bent portion 2 (i.e., the dimension of the first bent portion 2 in the Z direction). When the length of the second bending part 3 is smaller than that of the first bending part 2, the fixing effect is ensured, and partial material cost is saved.

In other preferred embodiments, the first bending portion 2 is connected to a plurality of second bending portions 3, and the plurality of second bending portions 3 are spaced apart from each other. The advantage is that the design of a plurality of second bending parts 3 has increased the spacing area to terminal plate 5, makes fixed more firm.

Further, the number of the second bending portions 3 connected to the first bending portion 2 is 2.

In order to fix the end plate 5 to the second bent portion 3, various manners may be adopted:

for example, referring to fig. 1 and 3, in some preferred embodiments, the second bending portion 3 is provided with a through hole 4 for riveting with an end plate 5, and the end plate 5 may be provided with a through hole of the same size, and the two are connected by a rivet;

or, one wall surface of the second bending portion 3 is a welding surface for welding with the end plate 5, and the second bending portion 3 may be welded to the side wall of the end plate 5 along the edge of the welding surface, and the welding manner is common welding or laser welding;

or, the second bending portion 3 is provided with a through hole 4, the through hole 4 is provided with a nut used for being in threaded connection with the end plate 5, the end plate 5 can be provided with a bolt, and the two are connected through the bolt.

The method has the advantages that the end plate 5 is fixed in multiple modes, the process requirements of enterprises on production lines are reduced, and therefore the optimal scheme is selected according to the actual situation, and the purposes of increasing the yield and reducing the cost are achieved.

Referring to fig. 1, 2 and 3, in some preferred embodiments, the connection between the first bending portion 2 and the side panel body 1, and/or the connection between the first bending portion 2 and the second bending portion 3 form a circular arc transition structure. Its advantage is, the internal surface of transition structure and the fillet of 6 lateral walls of electric core are laminated each other, have better parcel nature.

Specifically, the radius of the circular arc-shaped transition structure is 0.5mm-5mm.

In some preferred embodiments, the second fold 3 is square. However, the second bent portion 3 may have a semicircular shape, a U-shape, or other shapes that can meet the requirement of the fixed end plate 5.

In some preferred embodiments, the side panel body 1, the first bending portion 2, and the second bending portion 3 are made of aluminum alloy. Its advantage is, the aluminum alloy material compares with other materials, and the quality is lighter and stability is good.

The embodiment of the application also provides a battery module, and the battery module is provided with the battery module side plate provided by the embodiment.

In some preferred embodiments, referring to fig. 1 and fig. 3, a containing space for containing the battery core 6 is formed by two oppositely arranged battery module side plates, and the first bending portions 2 of the side plate bodies 1 of the battery module side plates are in contact with two directional side walls of the battery core 6, so that the battery module can give a multi-directional supporting force after the battery core 6 expands, so that the battery core is fixed more firmly.

The two oppositely arranged battery module side plates also form an accommodating space for accommodating the end plate 5, and when the battery module is assembled, the end plate 5 can be pushed in from the front side in the direction X in figure 2, so that the bulges at the left end and the right end of the end plate (the bulges in the direction Z in figure 4) are tightly contacted with the first bending part 2 and the second bending part 3; by using the above method for fixing, the assembling difficulty is reduced, and the assembling efficiency is improved.

The second bent portions 3 of the battery module side plates and the mounting walls of the end plates 5 are in contact with each other and fixed by means of various fixing means such as the aforementioned rivets, welding, or bolting.

The space of the end plate 5 not contacting the second bent portion 3 can be saved and utilized, and the space on both sides of the end plate can be utilized to the maximum.

In some preferred embodiments: when the number of the second bending parts 3 is 1, the sizes of the second bending parts 3, the first bending parts 2 and the end parts of the side plate body 1 in the Z direction are the same; or; when the number of the second bending parts 3 is 1, the second bending parts 3 are positioned in the middle of the first bending parts 2 in the Z direction; or; when the number of the second bending portions 3 is 3 or more; the mounting groove that corresponds with the 3 portions of bending of second is seted up to the end plate of battery module, and the portion of bending 3 of second inlays the dress or pegs graft to the mounting groove of end plate and fixes. Other similar structures and fixing modes are not described in detail.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; 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 application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a battery module curb plate which characterized in that, it includes:

a side plate body (1);

the battery cell structure comprises first bending parts (2) arranged at two ends of a side plate body (1), wherein the first bending parts (2) at the two ends of the side plate body (1) are bent towards the same side of the side plate body (1), and an accommodating space for accommodating a battery cell (6) is formed between the side plate body (1) and the first bending parts (2) at the two ends of the side plate body;

and the second bending part (3) is arranged on the first bending part (2) and used for fixing the second bending part (3) of the end plate (5), and the second bending part (3) and the side plate body (1) are respectively positioned on two side walls of the first bending part (2).

2. The battery module side plate as set forth in claim 1, wherein: the first bending part (2) is formed by bending the end part of the side plate body (1).

3. The battery module side plate of claim 1, wherein:

one first bending part (2) is connected to the end part of the side plate body (1);

or a plurality of first bending parts (2) connected with the end parts on the side plate body (1) are arranged at intervals.

4. The battery module side plate of claim 1, wherein: the second bending part (3) is formed by bending the end part of the first bending part (2) far away from the side plate body (1).

5. The battery module side plate of claim 1, wherein:

one second bending part (3) is connected to the first bending part (2);

or the second bending parts (3) connected to the first bending parts (2) are multiple, and the multiple second bending parts (3) are arranged at intervals.

6. The battery module side plate of claim 1, wherein:

the second bending part (3) is provided with a through hole (4) which is riveted with the end plate (5);

or one wall surface of the second bending part (3) is a welding surface for welding with the end plate (5);

or the second bending part (3) is provided with a through hole (4), and the through hole (4) is provided with a nut used for being in threaded connection with the end plate (5).

7. The battery module side plate of claim 1, wherein:

the joint of the first bending part (2) and the side plate body (1),

and/or a circular arc-shaped transition structure is formed at the joint of the first bending part (2) and the second bending part (3).

8. The battery module side plate of claim 7, wherein: the radius of the circular arc-shaped transition structure is 0.5mm-5mm.

9. The battery module side plate of claim 1, wherein:

the second bending part (3) is square;

and/or the side plate body (1), the first bending part (2) and the second bending part (3) are made of aluminum alloy materials.

10. A battery module, comprising the battery module side plate according to any one of claims 1 to 9.

Images