CN210489654U

CN210489654U - Battery cover plate assembly and battery pole

Info

Publication number: CN210489654U
Application number: CN201921451001.2U
Authority: CN
Inventors: 王俊朋; 曹方博; 房华禹; 伏仕勇
Original assignee: Yinlong New Energy Co Ltd
Current assignee: Yinlong New Energy Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-08
Anticipated expiration: 2029-08-30

Abstract

A battery cover plate assembly, comprising: the battery comprises an electrode cover plate, a battery pole arranged on the electrode cover plate, an insulating gasket positioned between the electrode cover plate and the battery pole and an insulating surface gasket attached to the surface of the electrode cover plate; the electrode pole is provided with a boss part protruding out of the peripheral wall of the electrode pole, and the electrode cover plate is provided with a pole assembling hole for accommodating the boss part; the boss part comprises an upper boss part and a lower boss part positioned below the upper boss part, the cross section of the upper boss part is circular, and the cross section of the lower boss part is polygonal. The utility model discloses with boss portion split on the battery utmost point post for last boss and lower boss, the columniform goes up the boss and can reduce the counterpoint when CCD fixes a position, reduces CCD's the location degree of difficulty, and prismatic lower boss can play the effect of bearing the torsion. The CCD automatic positioning and laminating insulating surface cushion is realized by arranging the cylindrical upper convex table, and the production efficiency and the yield are effectively improved.

Description

Battery cover plate assembly and battery pole

Technical Field

The utility model belongs to the technical field of power battery, especially, relate to a cylindricality aluminum hull power battery's apron subassembly and battery utmost point post.

Background

When power battery pack assembles, need carry out the series-parallel connection with each battery monomer and fix, because the positive pole apron of battery need bear certain torsion, in order to bear torsion better, be provided with the protruding portion of outstanding utmost point post perisporium on the anodal utmost point post, this protruding portion is the quadrangular structure of square cross sectional shape generally, and protruding portion and anodal utmost point post are mostly the integral type structure. The positive pole cover plate is provided with a hole corresponding to the shape of the projection on the pole, and after the battery is assembled, the projection on the positive pole is positioned in the hole of the positive pole cover plate. In order to ensure the insulation property, an insulating gasket is used for insulating and isolating the positive pole post and the positive cover plate (battery shell), and insulating surface gaskets are attached to the surfaces of the positive cover plate and the negative cover plate.

Usually, an explosion-proof valve is arranged on a positive electrode cover plate of a battery, when an insulating surface pad is attached, not only are an opening hole on the insulating surface pad corresponding to a protruding part of a pole column aligned with a hole on the positive electrode cover plate, but also an explosion-proof valve hole position on the insulating surface pad is aligned with the explosion-proof valve position on the positive electrode cover plate, namely, not only are 4 angular positions of the hole on the positive electrode cover plate corresponding to 4 angular positions of the opening hole on the insulating surface pad, but also the explosion-proof valve hole position on the insulating surface pad corresponds to the explosion-proof valve position on the cover plate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery cover plate subassembly and battery utmost point post convenient to laminating location.

In order to achieve the above object, the present invention adopts the following technical solutions:

a battery cover plate assembly, comprising: the battery comprises an electrode cover plate, a battery pole arranged on the electrode cover plate, an insulating gasket positioned between the electrode cover plate and the battery pole and an insulating surface gasket attached to the surface of the electrode cover plate; the electrode pole is provided with a boss part protruding out of the peripheral wall of the electrode pole, and the electrode cover plate is provided with a pole assembling hole for accommodating the boss part; the boss part comprises an upper boss part and a lower boss part positioned below the upper boss part, the cross section of the upper boss part is circular, and the cross section of the lower boss part is polygonal.

According to the above technical scheme, the utility model discloses with the boss portion split on the battery utmost point post for upper and lower two parts structure, go up the boss and be used for cooperating CCD location technique to realize the automatic laminating that insulating face filled up, lower boss is used for maintaining the torsion bearing capacity of battery when pack equipment, wherein, goes up the boss and adopts cylindrical structure, can reduce the counterpoint when CCD fixes a position, reduces CCD's the location degree of difficulty, and lower boss adopts prismatic structure, can bear torsion. The utility model discloses a set up columniform epirelief platform and realized CCD automatic positioning, laminating insulating face pad, solved the inefficiency that manual operation exists and the bad problem in location, not only production efficiency has obtained the improvement, and the process of tearing explosion-proof valve protection adhesive tape with the blade when can also avoiding manual operation leads to the condition of utmost point post and apron contact short circuit because of the operation carelessly, is favorable to improving the yields.

Further, the upper boss portion and the lower boss portion are integrally connected.

Further, a projection of the lower boss portion on a plane perpendicular to the boss axis is located within a range of a projection of the upper boss portion on a plane perpendicular to the boss axis.

Further, the cross section of the lower boss portion is square.

Furthermore, the insulating gasket is provided with a through hole with a shape corresponding to that of the boss part.

Further, the battery pole is a positive pole.

The utility model also provides a battery utmost point post, electrode utmost point post is last to have along the boss portion of radially outstanding in self perisporium, boss portion includes upper boss portion and is located the lower boss portion of upper boss portion below, the shape of cross section of upper boss portion is circular, the shape of cross section of lower boss portion is the polygon.

Divide into boss and lower boss with the boss portion on the utmost point post, the columniform boss of going up can reduce the counterpoint point when CCD location when laminating insulating face pad, reduces CCD's the location degree of difficulty, and prismatic lower boss can play the effect of bearing the torsion when cooperating with the battery cover plate, has realized CCD automatic positioning, laminating insulating face pad through setting up columniform last boss, has effectively improved production efficiency and yields.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.

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

fig. 2 is a cross-sectional view of a positive cover plate assembly according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a positive cover plate assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a positive pole of an embodiment of the present invention;

fig. 5 is a top view of a positive electrode cover plate according to an embodiment of the present invention;

fig. 6 is a top view of the insulating gasket of the present invention.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, wherein for convenience of illustration, the drawings showing the structure of the device are not to scale and are partially enlarged, and the drawings are only examples, which should not limit the scope of the invention. It should be noted that the drawings are in simplified form and are not to precise scale, which is only used for the purpose of facilitating and clearly assisting in the description of the embodiments of the present invention.

As shown in fig. 1, the power battery of the present embodiment includes a battery cell main body 1, a positive electrode cover plate 2, a negative electrode cover plate 3, a positive electrode post 4, a negative electrode post 5, an insulating gasket 6, and an insulating surface pad 7. The positive cover plate 2 and the negative cover plate 3 are respectively positioned at two ends of the electric core main body 1, and the positive cover plate 2 and the negative cover plate 3 are connected with the electric core main body 1 through welding. The anode post 4 is arranged on the anode cover plate 2, and the cathode post 5 is arranged on the cathode cover plate 3. The positive cover plate assembly of the present embodiment is composed of the positive cover plate 2, the positive pole post 4, the insulating spacer 6 and the insulating surface pad 7, and the negative cover plate and the negative pole post 5 constitute the negative cover plate assembly of the present embodiment.

Referring to fig. 2 and 3, the explosion-proof valve 8 is provided in the positive electrode cover 2, and a post fitting hole 2a through which the positive electrode post 4 passes is provided in the center of the positive electrode cover 2. The lower part of the positive pole 4 passes through the pole assembling hole 2a of the positive pole cover plate 2 and is exposed below the positive pole cover plate 2. The insulating gasket 6 is arranged between the anode pole 4 and the anode cover plate 2. As shown in fig. 4, the positive electrode post 4 is provided with a boss portion 4-1 protruding outward in the radial direction, and the boss portion 4-1 is composed of an upper boss portion 4-1a and a lower boss portion 4-1b, wherein the upper boss portion 4-1a is a cylindrical boss having a circular cross section shape, the lower boss portion 4-1b is a quadrangular boss having a square cross section shape, the upper boss portion 4-1a and the lower boss portion 4-1b are integrally connected, the upper boss portion 4-1a is located above the lower boss portion 4-1b, and a projection of the lower boss portion 4-1b on a plane perpendicular to an axis of the boss portion is located within a projection of the upper boss portion 4-1a on a plane perpendicular to the axis of the boss portion. The boss portion may be integrally formed with the post.

The boss portion of the positive electrode post is received in the post fitting hole of the positive electrode cover plate, the lower boss portion 4-1b of the positive electrode post 4 of the present embodiment is received in the post fitting hole 2a of the positive electrode cover plate 2, and the upper boss portion 4-1a is located on the surface of the positive electrode cover plate 2, so that the shape of the post fitting hole 2a corresponds to the shape of the lower boss portion 4-1b, and the cross-sectional shape is also square (fig. 5). However, in another embodiment, the upper boss portion may be accommodated in the pole mounting hole together with the lower boss portion, and in this case, the shape of the pole mounting hole 2a may correspond to the shapes of the upper and lower boss portions.

The insulating gasket 6 is provided with a through hole 6a having a shape corresponding to the shape of the boss portion 4-1 of the positive electrode post 4, that is, the through hole 6a is divided into two parts: the upper part is a groove with a circular cross section shape, the lower part is a hole with a square cross section shape (figure 6), an upper boss part 4-1 of the positive pole post 4 is accommodated in the circular groove of the through hole 6a, a lower boss part 4-1b is accommodated in the square hole of the through hole 6, and the insulating gasket 6 insulates and isolates the positive pole post 4 and the positive cover plate 2.

Because the boss portion on utmost point post has the effect of bearing torsion and positioning by assembly, the utility model discloses be two parts with boss portion split: the upper boss part is cylindrical and used for facilitating the attaching and positioning of the insulating surface gasket, and the lower boss part is prismatic and used for bearing the torsion force of the cover plate. After the positive pole cover plate components are assembled together, the upper boss part 4-1a of the positive pole post 4 is located on the surface of the positive pole cover plate 2, the lower boss part 4-1b is accommodated in the post assembling hole 2a of the positive pole cover plate 2, when an insulating face pad is to be attached, because the projection shape of the upper boss part 4-1b is circular and blocks the lower boss part below the upper boss part, 4 corners of the lower boss part do not need to be aligned, alignment points between the upper boss part and the insulating face pad 7 are reduced, when the insulating face pad is attached by CCD automatic positioning, the insulating face pad can be automatically positioned and attached only by automatically positioning the explosion-proof valve hole position 7a on the insulating face pad 7 and the explosion-proof valve position 8 on the positive pole cover plate 2 through the CCD. Meanwhile, the stress between the positive pole post 4 and the positive cover plate 2 is positioned on the lower boss part 4-1b, and the square structure of the lower boss part 4-1b can still well maintain the torque bearing capacity of the positive cover plate in the pack assembling process.

Of course, the technical concept of the present invention is not limited to the above embodiments, and many different specific schemes can be obtained according to the concept of the present invention, for example, in case of demand, the negative pole post can also be provided with the boss portion structure on the positive pole post in the foregoing embodiments, and the cross section shape of the lower boss portion can be a square structure such as a square or a rectangle, or a polygonal structure such as a triangle or a hexagon; the pole column structure and the positive plate cover plate component of the utility model are mainly applied to cylindrical power batteries, but can also be applied to other types of cylindrical batteries; such modifications and equivalents are intended to be included within the scope of the present invention.

Claims

1. A battery cover plate assembly, comprising: the battery comprises an electrode cover plate, a battery pole arranged on the electrode cover plate, an insulating gasket positioned between the electrode cover plate and the battery pole and an insulating surface gasket attached to the surface of the electrode cover plate; the battery pole is provided with a boss part protruding out of the peripheral wall of the battery pole, and the electrode cover plate is provided with a pole assembling hole for accommodating the boss part; the method is characterized in that:

the boss part comprises an upper boss part and a lower boss part positioned below the upper boss part, the cross section of the upper boss part is circular, and the cross section of the lower boss part is polygonal.

2. The battery cover plate assembly of claim 1, wherein: the upper boss portion and the lower boss portion are connected as a whole.

3. The battery cover plate assembly of claim 1 or 2, wherein: the projection of the lower boss on a plane perpendicular to the boss axis is within the range of the projection of the upper boss on a plane perpendicular to the boss axis.

4. The battery cover plate assembly of claim 1 or 2, wherein: the cross section of the lower boss part is square.

5. The battery cover plate assembly of claim 1, wherein: and the insulating gasket is provided with a through hole with a shape corresponding to that of the boss part.

6. The battery cover plate assembly of claim 1, wherein: the battery pole is a positive pole.

7. A battery post having a boss portion protruding radially from a peripheral wall thereof, characterized in that:

8. The battery post of claim 7, wherein: the upper boss portion and the lower boss portion are connected as a whole.

9. A battery post according to claim 7 or 8, characterized in that: the projection of the lower boss on a plane perpendicular to the boss axis is within the range of the projection of the upper boss on a plane perpendicular to the boss axis.

10. A battery post according to claim 7 or 8, characterized in that: the cross section of the lower boss part is square.