CN217641623U - Battery module - Google Patents

Abstract

The utility model discloses a battery module. The utility model discloses in, the battery module includes: the shell comprises a pair of cover plates and a pair of end plates, wherein the pair of cover plates are oppositely arranged, and the pair of end plates are oppositely arranged and connected with the pair of cover plates; the battery cell stacking body is arranged in the shell; the insulating support is positioned between the end plates and the battery cell stacking body, and at least one pair of limiting surfaces which are separated along the direction of separating the end plates are arranged on the insulating support; at least one cover plate has the extension of bending extension towards the direction of another cover plate towards the one end of end plate, and the extension is located between a pair of spacing face. Compared with the prior art, the insulating support is effectively fixed and not easy to deform, and the battery module is safer to use.

Description

Battery module

Technical Field

The utility model relates to a battery field, in particular to battery module.

Background

In recent years, the appearance of new energy automobiles plays a great role in promoting social development and environmental protection, and a power battery pack is a rechargeable battery, is a power source of the new energy automobiles, and is widely applied to the field of the new energy automobiles. The plastic part of the insulating support is usually needed in a large module in the battery module to fix the copper bars, the sampling wire harnesses and the like, and the insulating support is usually wide (more than 300 mm) and weak in rigidity, so that the insulating support generates large vibration and deformation along with the vibration of the whole vehicle, the wire harnesses, the sampling sheets and the like fixed on the insulating support are pulled, and the effectiveness of electric connection is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module for insulating support obtains effectual fixed, is difficult for deformation, makes battery module use more safety.

In order to solve the above technical problem, an embodiment of the present invention provides a battery module, including:

the shell comprises a pair of cover plates and a pair of end plates, the pair of cover plates are oppositely arranged, and the pair of end plates are oppositely arranged and connected with the pair of cover plates;

a cell stack disposed within the housing; and the number of the first and second groups,

the insulating support is positioned between the end plates and the battery cell stacking body, and at least one pair of limiting surfaces which are separated along the direction of separating the end plates are arranged on the insulating support; at least one cover plate towards the one end of end plate has the extension of bending extension towards the direction of another cover plate, and the extension is located a pair of spacing face.

In an embodiment, one side of the insulating bracket facing the extending portion is provided with a mounting groove, the side of the mounting groove facing the extending portion is an opening side, and the mounting groove is provided with a pair of limiting surfaces oppositely spaced along the spacing direction of the pair of end plates.

In an embodiment, a mounting groove is formed in one side, facing the extending portion, of the insulating support, and the mounting groove deviates from the battery cell stacking body and is an opening side facing the one side of the extending portion; one side of the mounting groove, which faces the battery cell stacking body, is provided with the limiting surface;

the insulating support is provided with a limiting piece, and at least part of the limiting piece is opposite to the opening side of one side, deviating from the battery cell stacking body, of the mounting groove; the locating part orientation one side of electric core stack body is another spacing face. So that two limiting surfaces can be formed on the thickness of the limited insulating support.

In an embodiment, the extension portion is fixed to the limiting member in a clamping manner. Thereby more stably positioning the insulating support.

In an embodiment, a height of a top surface of the position-limiting member is lower than that of the opening of the mounting groove facing the extending portion. The extension part can be conveniently inserted between the two limiting surfaces.

In an embodiment, at least a portion of the limiting surface of the limiting member facing one side of the battery cell stacking body is an inclined surface portion, and the inclined surface portion is gradually inclined towards the inside of the mounting groove from the top end of the limiting member towards the bottom of the mounting groove. Thereby guiding the extension part and facilitating the insertion of the extension part between the two limiting surfaces.

In one embodiment, the housing further comprises a pair of oppositely arranged side plates, and two ends of each side plate are respectively butted with the pair of end plates; the direction in which the pair of side plates are relatively separated is the extending direction of the end plate;

the mounting groove has a pair of second groove side walls spaced apart from each other in an extending direction of the end plate, and the top of the second groove side walls has a chamfered slope. Thereby guiding the extension part and facilitating the insertion of the extension part between the two limiting surfaces.

In one embodiment, the side of the insulating support facing at least one of the cover plates is further provided with a positioning column, and the cover plate is provided with a through hole for inserting the positioning column.

In one embodiment, the housing further comprises a pair of oppositely disposed side plates disposed between the pair of end plates and between the pair of cover plates;

the side plate faces one end of the end plate is provided with an open groove with an opening facing the end plate, and the insulating support faces one side of the side plate and is convexly provided with a guide rib inserted into the open groove. Thus realizing the prepositioning of the insulating bracket.

In one embodiment, the cover plate abuts against the insulating support;

an open area is formed in the insulating support, and a connecting piece connected with a lug of the battery cell is exposed through the open area;

the extending parts are arranged on the two cover plates, and the insulating support faces towards the pair of limiting surfaces of the two cover plates.

The utility model discloses embodiment is for prior art, because the last at least a pair of spacing face that has of insulating support, the extension that the apron has is located between a pair of spacing face to the extension supports and blocks spacing face, restriction insulating support removes between end plate and electric core stack body, reference column insulating support promptly, when battery module shakes, insulating support comparatively stably can not remove the deformation, and then the pencil of location on insulating support, sampling piece etc. can not dragged the damage, make battery module use more safe and reliable.

Drawings

Fig. 1 is an exploded view of a battery module according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion C of FIG. 1;

fig. 3 is a schematic structural view of an assembled battery module according to an embodiment of the present invention, after a rear cover plate and an insulating bracket are removed from an end plate of the battery module;

FIG. 4 is an enlarged view of a portion of FIG. 3;

fig. 5 is a schematic structural view of a battery module according to an embodiment of the present invention, in which the rear cover plate is removed from the insulating support;

FIG. 6 is a partial enlarged view of B in FIG. 5;

fig. 7 is a schematic structural view of a spacing member and an extending portion separated from each other according to another embodiment of the present invention;

fig. 8 is an assembled cross-sectional view of a stop member and an extension portion in accordance with another embodiment of the present invention;

100, a battery module; 11. a cover plate; 111. an extension portion; 12. an end plate; 13. a side plate; 2. an insulating support; 21. a limiting surface; 22. mounting grooves; 20. an open area; 3. a cell stack body; 31. a tab; 32. a connecting member; 4. a limiting member; 41. an inclined plane part; 23. a second trench sidewall; 230. chamfering the inclined plane; 210. a recess; 40. a hook body; 5. a positioning column; 6. a through hole; 7. a first positioning member; 8. a second positioning member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, directional terms are used, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be interpreted as words of convenience and should not be interpreted as limiting terms.

Embodiments of the present invention are described below with reference to the drawings. As shown in fig. 1, 3, and 5, the battery module 100 includes: casing 1, set up electric core stack body 3 and insulating support 2 in casing 1, seted up open area 20 on the insulating support 2, the connecting piece 32 of the utmost point ear 31 of connecting electric core stack body 3 exposes through open area 20. The housing 1 includes a pair of cover plates 11 and a pair of end plates 12, the pair of cover plates 11 being disposed opposite to each other, and the pair of end plates 12 being disposed opposite to each other and connecting the pair of cover plates 11. Insulating support 2 sets up between end plate 12 and electric core stack body 3, and in this embodiment, insulating support 2 is equipped with two, and two insulating support 2 centre gripping electric core stack body 3 in the following explanation, take an insulating support 2 as an example. In other embodiments, the number of the insulating supports 2 may be 1.

Specifically, as shown in fig. 1, 3, 4, 5 and 6, the upper end of the insulating support 2 has two pairs of limiting surfaces 21, each pair of limiting surfaces 21 is spaced apart in a direction in which the pair of end plates 12 are spaced apart, the end of the cover plate 11 above the battery module 100 facing the end plates 12 has an extending portion 111 bent downward, and the extending portion 111 is located between the pair of limiting surfaces 21. In other embodiments, the upper end of the insulating support 2 may also have one pair of limiting surfaces 21, or more than two pairs of limiting surfaces 21.

In other embodiments, the lower end of the insulating support 2 may also have a limiting surface 21 like the upper end thereof, and the lower cover plate 11 may also have an extending portion 111 like the upper end thereof, and the matching structure of the extending portion and the limiting surface 21 is the same as the upper end of the battery module 100, and will not be described in detail herein.

Through the discovery that it is not difficult to find through the above-mentioned, owing to have at least a pair of spacing face on the insulating support, the extension that the apron has is located between a pair of spacing face to the extension supports and blocks spacing face, and restriction insulating support removes between end plate and electric core stack body, and reference column insulating support promptly, when battery module vibrations, insulating support comparatively steadily can not remove the deformation, and then the pencil of location on insulating support, sampling piece etc. can not dragged the damage, make battery module use more safe and reliable.

Further, as shown in fig. 1, fig. 3, fig. 4, fig. 5 and fig. 6, the mounting groove 22 is opened towards one side of the extension portion 111 in the insulating support 2, and the mounting groove 22 deviates from the cell stack body 3 and is an opening side towards one side of the extension portion 111. One side of the mounting groove 22 facing the cell stack body 3 is a limiting surface 21. Have locating part 4 on insulating bracket 2, this locating part 4 is the plate body, extends to apron 11 direction, and locating part 4 is relative with the opening side that mounting groove 22 deviates from one side of electric core stack body 3, and locating part 4 is another spacing face 21 towards one side of electric core stack body 3. The extending portion 111 can be inserted between the pair of limiting surfaces 21 from the opening, and the extending portion 111 can be abutted against the limiting surfaces 21, or a certain gap can be formed between the extending portion 111 and the limiting surfaces 21, so that a proper moving space can be formed between the extending portion 111 and the insulating support 2.

In other embodiments, the position-limiting member 4 may be a cylinder or other types of structures. The stopper 4 may be partially opposed to the opening side of the mounting groove 22 on the side away from the cell stack body 3.

In addition, in some embodiments, there may be no limiting piece 4, and one side of the insulating bracket 2 facing the extending portion 111 is opened with a mounting groove 22, and one side of the mounting groove 22 facing the extending portion 111 is an opening side. The mounting groove 22 has a pair of limiting surfaces 21 spaced apart from each other in the direction of spacing the pair of end plates 12, that is, the limiting surfaces 21 are groove walls of the mounting groove 22.

Further, as shown in fig. 1, fig. 3, fig. 4, fig. 5 and fig. 6, the top surface of the limiting member 4 is lower than the opening of the mounting groove 22 facing the extending portion 111, so that the extending portion 111 can be inserted between the two limiting surfaces 21, the mounting is more convenient, and the limiting member 4 is prevented from occupying the space in the housing due to too high height.

More particularly, as shown in fig. 1, 3, 4, 5, and 6, at least a portion of the limiting surface 21 of the limiting member 4 facing one side of the cell stacked body 3 is an inclined surface portion 41, and the inclined surface portion 41 gradually inclines toward the inside of the mounting groove 22 from the top end of the limiting member 4 toward the bottom of the mounting groove 22. Thereby guiding the extension 111 to facilitate the insertion of the extension 111 between the two stopper surfaces 21.

As shown in fig. 1, 3, 4, 5 and 6, the housing further includes a pair of side plates 13 disposed opposite to each other, both ends of each side plate 13 respectively abut against a pair of end plates 12, and a direction in which the pair of side plates 13 are spaced apart from each other is an extending direction of the end plates 12. The mounting groove 22 has a pair of second groove side walls 23 oppositely spaced in the extending direction of the end plate 12, and the tops of the second groove side walls 23 have chamfered slopes 230. Thereby guiding the extension 111 to facilitate the insertion of the extension 111 between the two stopper surfaces 21.

Further, as shown in fig. 1 and 2, one end of the side plate 13 facing the end plate 12 is provided with a first positioning member 7, and one side of the insulating bracket 2 facing the side plate 13 is provided with a second positioning member 8 which is in fit connection with the first positioning member 7. In this embodiment, the first positioning member 7 is an open slot with an opening facing the end plate 12, and the second positioning member 8 is a guide rib inserted into the open slot, so as to realize the pre-positioning of the insulating support 2. In other embodiments, an open slot may be formed in the side of the insulating support 2, and the side plate 13 has a guide rib inserted into the open slot, or the first positioning element and the second positioning element are matched structures such as a cylinder and a hole.

As shown in fig. 1 and 2, a through hole 6 is opened at one end of the lower cover plate 11 facing the insulating support 2, a positioning post 5 is provided at the lower end of the insulating support 2, and the positioning post 5 is inserted into the through hole 6 and then hot-riveted, so that the insulating support 2 can be positioned. The upper end of the insulating support 2 is provided with a limiting surface 21, the lower end of the insulating support 2 is provided with a positioning column 5, and the insulating support 2 is positioned through the cooperation of two positioning structures. It is understood that the positioning posts 5 are not limited to the upper end or the lower end of the insulating support 2, and the same is true of the structure of the limiting surface, and when the positioning posts or the limiting surface are provided, the cover plate is correspondingly provided with through holes or extending parts. That is, in one embodiment, the upper end or the lower end of the insulating bracket 2 has the structure of the limiting surface 21 and the structure of the positioning post 5. In an embodiment, the upper end or the lower end of the insulating support 2 is a limiting surface 21 structure, and the structure without the positioning column 5 exists.

In another embodiment, as shown in fig. 7 and 8, the extension portion 111 is fixed to the position-limiting member 4 in a snap-fit manner. The extending portion 111 is formed with a notch 210, and the limiting surface 21 of the limiting member 4 is formed with a hook 40 inserted into the notch 210, so as to more stably position the insulating bracket 2. In other embodiments, a recess may be provided on the limiting surface 21 of the limiting member 4, and the extending portion 111 is provided with a hook 40 or a protruding point that can be inserted into the recess 210.

Implementation details of the present embodiment are specifically described below, and the following description is provided only for the sake of understanding and is not necessary for implementing the present embodiment.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims (10)

1. A battery module, comprising:

the shell comprises a pair of cover plates and a pair of end plates, the pair of cover plates are oppositely arranged, and the pair of end plates are oppositely arranged and connected with the pair of cover plates;

a cell stack disposed within the housing; and the number of the first and second groups,

the insulating support is positioned between the end plates and the battery cell stacking body, and at least one pair of limiting surfaces which are separated along the direction of separating the end plates are arranged on the insulating support; at least one cover plate towards the one end of end plate has the extension of bending extension towards the direction of another cover plate, and the extension is located a pair of spacing face.

2. The battery module according to claim 1, wherein the insulating holder has a mounting groove formed at a side thereof facing the extending portion, the mounting groove having an open side at a side thereof facing the extending portion, the mounting groove having a pair of the stopper surfaces spaced apart from each other in a direction in which the pair of end plates are spaced apart.

3. The battery module according to claim 1, wherein a mounting groove is formed in one side of the insulating support facing the extending portion, and the side of the mounting groove facing away from the cell stack and the extending portion is an opening side; one side of the mounting groove, which faces the battery cell stacking body, is provided with the limiting surface;

the insulating support is provided with a limiting piece, and at least part of the limiting piece is opposite to the opening side of one side, deviating from the battery cell stacking body, of the mounting groove; one side of the limiting part facing the battery cell stacking body is the other limiting surface.

4. The battery module according to claim 3, wherein the extension part is fixed to the stopper in a snap-fit manner.

5. The battery module according to claim 3, wherein the top surface of the retaining member is lower than the opening of the mounting groove toward the extension portion.

6. The battery module according to claim 3, wherein at least a portion of a limiting surface of the limiting member on a side facing the cell stack body is a slope portion, and the slope portion gradually inclines toward the inside of the mounting groove from a top end of the limiting member toward a bottom of the mounting groove.

7. The battery module according to claim 2 or 3, wherein the housing further comprises a pair of oppositely arranged side plates, and two ends of each side plate are respectively butted with the pair of end plates; the direction in which the pair of side plates are relatively separated is the extending direction of the end plate;

the mounting groove has a pair of second groove sidewalls oppositely spaced along an extending direction of the end plate, and a top of the second groove sidewalls has a chamfered slope.

8. The battery module as set forth in claim 1, wherein the side of the insulating support facing at least one of the cover plates further has positioning posts, and the cover plate has through holes for the insertion of the positioning posts.

9. The battery module according to claim 1, wherein the housing further comprises a pair of oppositely disposed side plates disposed between the pair of end plates and between the pair of cover plates;

the side plate faces one end of the end plate is provided with an open groove with an opening facing the end plate, and the insulating support faces one side of the side plate and is convexly provided with a guide rib inserted into the open groove.

10. The battery module according to claim 1, wherein the cap plate abuts against the insulating support;

an open area is formed in the insulating support, and a connecting piece connected with a lug of the battery cell is exposed through the open area;

the extending parts are arranged on the two cover plates, and the insulating support faces towards the pair of limiting surfaces of the two cover plates.

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