CN218586299U - Battery cover plate and battery - Google Patents

Abstract

The utility model provides a battery cover plate and battery, battery cover plate includes the apron body, and the upper surface of apron body is equipped with the notes cistern, annotates the cistern and includes at least two annular groove sections that connect gradually and the size reduces gradually from top to bottom, and the middle part in notes cistern is equipped with the notes liquid hole that link up notes cistern and apron body. The utility model relates to a battery cover plate can avoid flowing into explosion-proof valve department in the explosion-proof hole to annotating liquid hole when annotating liquid through annotating the cistern and cause the pollution, and this battery cover plate simple structure, easily shaping, and the processing cost is low.

Description

Battery cover plate and battery

Technical Field

The utility model belongs to the technical field of power battery, more specifically relates to a battery cover plate and battery.

Background

The power battery is a power source or a storage medium of a new energy electric vehicle, an energy storage power station, new energy application and the like, and the quality of the power battery directly determines the service performance of the whole vehicle. Generally be equipped with boss structure above the explosion-proof valve on the top cap of battery, this kind of structure causes the processing cost of battery higher, and the protection paster is pasted and is easily caused droing less in boss top area of contact, annotates the liquid hole simultaneously and easily causes liquid outflow pollution apron when annotating the liquid, influences the quality of battery. Therefore, there is a need for a battery cover plate that solves at least one of the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery cover plate and battery can avoid causing the pollution with electrolyte inflow explosion-proof valve department when annotating the liquid.

In order to realize the above-mentioned purpose, the utility model provides a battery cover plate, which comprises a cover plate body, the upper surface of apron body is equipped with annotates the cistern, annotate the cistern and include at least two annular groove sections that connect gradually and the size reduces gradually from top to bottom, the middle part of annotating the cistern is equipped with and link up annotate the cistern with the notes liquid hole of apron body.

Preferably, the battery cover plate further comprises a sealing element, and the sealing element is located in the liquid injection groove and is in sealing connection with the liquid injection hole.

Preferably, the depth of the liquid injection groove is 0.2-1.5 mm.

Preferably, each groove section is circular ring-shaped, and the outer diameter of each groove section ranges from 3 mm to 50mm.

Preferably, at least the side wall of the groove section connected to the pouring hole is inclined toward the center axis of the pouring hole.

Preferably, the upper surface of the cover plate body is provided with a boss surrounding the liquid injection groove.

Preferably, the height of the boss is 0.5-2 mm, and the distance between the outer edge of the boss and the side wall of the uppermost groove section is 0.5-5 mm.

Preferably, the cover plate body is provided with an explosion-proof hole, and an explosion-proof valve is arranged in the explosion-proof hole; the battery cover plate further comprises a cover plate, and the cover plate covers the explosion-proof hole.

Preferably, the top end face of the cover plate body is provided with a pole.

The utility model also provides a battery, including battery case, pole piece, electrolyte and foretell battery apron, the pole piece with electrolyte is located in the battery case, battery apron lock in battery case and with battery case sealing connection.

The utility model relates to a battery cover plate, its beneficial effect lies in: electrolyte can be avoided flowing into explosion-proof valve department and cause the pollution when annotating the liquid hole and annotating the liquid through annotating the cistern, and this battery cover plate simple structure, easily shaping, the processing cost is low.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.

Fig. 1 shows a schematic structural view of a battery cover plate according to an exemplary embodiment of the present invention;

fig. 2 shows a top view of a battery cover plate of an exemplary embodiment of the present invention;

fig. 3 shows a cross-sectional view of a battery cover plate of an exemplary embodiment of the present invention;

FIG. 4 shows an enlarged schematic view of one embodiment at A in FIG. 3;

FIG. 5 shows an enlarged schematic view of another embodiment at A in FIG. 3;

fig. 6 shows an enlarged schematic view at B in fig. 3.

Description of the reference numerals:

1. the cover plate comprises a cover plate body, 2, an explosion-proof hole, 3, a liquid injection groove, 31 hole sections, 32 bosses, 33 liquid injection holes, 4, an explosion-proof valve, 5, a cover plate and 6 pole columns.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element 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.

In order to solve the problems of the prior art, as shown in fig. 1 to 6, the utility model provides a battery cover plate, which comprises a cover plate body 1, a liquid injection groove 3 is arranged on the upper surface of the cover plate body 1, the liquid injection groove 3 comprises at least two groove sections 31 which are mutually connected and have diameters decreasing from top to bottom, a liquid injection hole 33 is arranged in the middle of the liquid injection groove 3,

the utility model relates to a battery cover plate can avoid flowing into explosion-proof valve 4 departments and cause the pollution to annotating liquid hole 33 when annotating the liquid through annotating liquid groove 3, and this battery cover plate simple structure, easily shaping, and the processing cost is low.

The battery cover plate also comprises a sealing piece which is positioned in the liquid injection groove 3 and is connected with the liquid injection hole 33 in a sealing way.

In an embodiment of the present invention, the sealing member is a sealing nail, and the sealing nail can be welded with the center of the liquid injection groove 3 by welding, so that the liquid injection hole 33 is sealed.

Through addding notes cistern 3, can place sealed nail on the one hand, realize annotating liquid hole 33 and the welding of sealed nail of battery, on the other hand can avoid annotating the electrolyte that leaks outward when liquid flows into explosion-proof valve 4 department and pollutes explosion-proof piece. During liquid injection, the overflow of the electrolyte flows into the liquid injection groove 3 and is prevented from flowing out to the explosion-proof hole 2 and the explosion-proof valve 4.

Preferably, the depth of the injection tank 3 is 0.2 to 1.5mm. The depth of each tank section 31 of the liquid injection tank 3 may be the same or different, and may be determined according to actual conditions. The liquid injection groove 3 is formed integrally with the cover plate body 1 and is provided around the liquid injection hole 33.

Preferably, each groove section 31 is circular ring-shaped, and the outer diameter of each groove section 31 ranges from 3 mm to 50mm.

Preferably, at least the side wall of the trough section 31 connected to the pour hole 33 is inclined toward the central axis of the pour hole 33, so that the electrolyte enters the pour hole 33 during pouring.

As shown in fig. 3, in an embodiment of the present invention, the liquid injection groove 3 includes two groove sections 31, the two groove sections 31 are mutually communicated, and the sidewall is inclined, the liquid injection hole 33 is located at the center of the groove section 31 of the bottom, the diameter of the groove section 31 located above is greater than that of the groove section 31 located below, and the diameter of the groove section 31 located below is greater than that of the liquid injection hole 33, so as to form two steps, which is convenient for installing the sealing member and accommodating the overflow generated during liquid injection. The inner contour of each tank section 31 of the liquid injection tank 3 and the shape of the liquid injection hole 33 can be the same or different, and the shapes are determined according to actual requirements.

As shown in fig. 4, in another embodiment of the present invention, the upper surface of the cover plate body 1 is provided with a boss 32 surrounding the liquid injection groove 3. In this embodiment, annotate liquid groove 3 including the first groove section that from top to bottom sets gradually, second groove section and third groove section, three groove section 31 communicates each other, can be straight hole with the corresponding first groove section of boss 32, the slope of 31 lateral walls of other two groove sections, annotate the center that liquid hole 33 is located the third groove section, the diameter of second groove section is greater than the diameter of third groove section, the diameter of third groove section is greater than the diameter of annotating liquid hole 33, the maximum diameter of second groove section is the same with the diameter of first groove section, in this embodiment, annotate liquid groove 3 and form two-stage step, be convenient for install the sealing member and hold the overflow that produces when annotating the liquid.

Preferably, the height of the boss 32 is 0.5 to 2mm, and the distance between the outer edge of the boss 32 and the side wall of the uppermost groove section 31 is 0.5 to 5mm. The outer contour of the boss 32 may be the same as or different from that of the liquid injection hole 33, for example, the liquid injection hole 33 is a circular hole, and the boss 32 may be a cylinder or a square cylinder, which is determined according to actual requirements.

As the preferred scheme, the cover plate body 1 is provided with an explosion-proof hole 2, and an explosion-proof valve 4 is arranged in the explosion-proof hole 2; the utility model discloses a battery cover still includes cover plate 5, and cover plate 5 is through the upper surface of sticky laminating apron body 1, and covers explosion-proof hole 2 to protection explosion-proof valve 4. The utility model discloses in, 2 surfaces in explosion-proof hole do not set up the boss structure, have reduced the cost that current product caused at 4 increases the boss of explosion-proof valve for simple structure, easily shaping, the processing cost is low.

As a preferred scheme, the upper surface of the cover plate body 1 is provided with a pole 6.

The utility model also provides a battery, including battery case, pole piece, electrolyte and foretell battery apron, in battery case was located to pole piece and electrolyte, battery cover plate lock closed in battery case and with battery case sealing connection.

While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (10)

1. The utility model provides a battery cover plate, its characterized in that, includes apron body (1), the upper surface of apron body (1) is equipped with notes cistern (3), it includes at least two annular groove sections (31) that connect gradually and the size reduces gradually from top to bottom to annotate cistern (3), the middle part of annotating cistern (3) is equipped with and link up annotate cistern (3) with annotate liquid hole (33) of apron body (1).

2. The battery cover plate according to claim 1, further comprising a sealing member located in the liquid injection groove (3) and hermetically connected to the liquid injection hole (33).

3. The battery cover plate according to claim 1, wherein the depth of the liquid injection groove (3) is 0.2 to 1.5mm.

4. The battery cover plate according to claim 1, wherein each of the groove segments (31) has a circular ring shape, and the outer diameter of each of the groove segments (31) ranges from 3 to 50mm.

5. The battery lid according to claim 1, wherein at least the side wall of the groove section (31) connected to the pour hole (33) is inclined toward the center axis of the pour hole (33).

6. The battery cover plate according to claim 1, wherein the upper surface of the cover plate body (1) is provided with a boss (32) surrounding the liquid injection groove (3).

7. The battery cap plate according to claim 6, wherein the height of the boss (32) is 0.5 to 2mm, and the distance between the outer edge of the boss (32) and the sidewall of the uppermost groove segment (31) is 0.5 to 5mm.

8. The battery cover plate according to claim 1, wherein the cover plate body (1) is provided with an explosion-proof hole (2), and an explosion-proof valve (4) is arranged in the explosion-proof hole (2);

the battery cover plate further comprises a cover plate (5), and the cover plate (5) covers the explosion-proof hole (2).

9. The battery cover plate according to claim 1, wherein the upper surface of the cover plate body (1) is provided with a post (6).

10. A battery comprising a battery case, a pole piece, an electrolyte and the battery cover plate according to any one of claims 1 to 9, wherein the pole piece and the electrolyte are disposed in the battery case, and the battery cover plate is fastened to and hermetically connected with the battery case.

Images