CN216648509U - Battery cover plate, shell assembly and battery - Google Patents

Abstract

The utility model discloses a battery cover plate, a shell assembly and a battery, wherein the battery cover plate comprises: the cover plate body is used for packaging a shell of the steel shell battery, the cover plate body is provided with a top surface and a bottom surface parallel to the top surface, the edge of the bottom surface is provided with a recessed part in a surrounding mode, the recessed part comprises a first surface, the first surface is connected with the bottom surface, and the first surface is used for being attached to a flange edge of the shell so as to increase the contact area of the cover plate body and the flange edge of the shell; the depressed part is laminated through the flange limit of first face with the casing to the area of contact on increase apron body and flange limit, thereby increase the area of contact of apron body and casing, effectual flange limit that reduces the battery when guaranteeing the welding effect reduces the size of battery, and then promotes the energy density of battery.

Description

Battery cover plate, shell assembly and battery

Technical Field

The utility model relates to the technical field of battery manufacturing processes, in particular to a battery cover plate, a shell assembly and a battery.

Background

Compared with the currently and commonly used aluminum plastic film soft package battery, the steel shell battery has the advantages that the top and side sealing edge widths are reduced, the space utilization rate is increased, and the energy density of a battery cell is higher; the safety is good, and the battery core has the advantage of higher reliability in the extreme environment.

The shell of the existing steel shell battery is generally provided with a flange edge, as shown in fig. 1-2, the effective welding width of the steel shell battery is 0.2cm, in order to reduce the size of the steel shell battery as much as possible, part of the flange edge of the steel shell battery is cut off, and the effective welding width is reduced, so that the welding effect of the steel shell battery is reduced, and the problem of liquid leakage of the steel shell battery is easy to occur.

SUMMERY OF THE UTILITY MODEL

One of the objects of the present invention is: the utility model provides a battery cover plate has solved among the prior art technical problem that excision flange reduces the battery size and reduces battery welding effect, has realized reducing the battery size when guaranteeing welding effect.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a battery cover plate comprising:

the apron body for the casing of encapsulation box-hat battery, the apron body be provided with the top surface and with the parallel bottom surface of top surface, the border of bottom surface encircles and is provided with the depressed part, the depressed part includes first face, first face with the bottom surface is connected, first face be used for with the flange limit laminating of casing, in order to increase the apron body with the area of contact on the flange limit of casing.

In the improvement of the battery cover plate, the concave part also comprises a second surface;

one end of the second face is connected with the first face, and the other end of the second face is connected with the side wall of the cover plate body.

According to the improvement of the battery cover plate, the first surface is set to be the first arc-shaped surface, the second surface is set to be the plane, and the first surface and the second surface are in transitional connection.

According to the improvement of the battery cover plate, the thickness of the cover plate body is 0.1-1 cm, and the distance between the second surface and the bottom surface is 0.05-0.5 cm.

According to the improvement of the battery cover plate, the second surface and the bottom surface are arranged in parallel.

According to the improvement of the battery cover plate, the width of the first surface is 0.1-1 cm, and the width of the second surface is 0.22-1.5 cm.

According to the improvement of the battery cover plate, the second surface is set to be the second arc-shaped surface.

Another object of the present invention is: providing a housing assembly comprising the battery cover plate described earlier in the specification, and further comprising a housing;

the top border of casing is provided with the flange limit, apron body lid is located on the opening of casing and with the casing is formed with the inner chamber, the depressed part with the laminating of flange limit.

According to the improvement of the shell assembly, the opening of the shell is provided with the round angle.

Still another object of the present invention is to: providing a battery comprising the housing assembly described above, and further comprising a battery cell;

the electric core set up in the inner chamber, the electric core includes positive plate, negative pole piece and set up in positive plate with the diaphragm between the negative pole piece.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a battery cover plate, setting through the apron body, the apron body includes parallel arrangement's top surface and bottom surface, the border of bottom surface encircles and is provided with the depressed part, the depressed part includes the first face of being connected with the bottom surface, in use, encapsulate the apron body on the casing of battery, the depressed part is laminated through the flange limit of first face and casing, with the area of contact on increase apron body and flange limit, thereby increase the area of contact of apron body and casing, effectual flange limit that reduces the battery when guaranteeing the welding effect, reduce the size of battery, and then promote the energy density of battery.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a conventional steel can battery.

Fig. 2 is a schematic structural diagram at a in fig. 1.

Fig. 3 is a schematic structural diagram according to a first embodiment of the present invention.

Fig. 4 is a second schematic structural diagram according to a first embodiment of the present invention.

Fig. 5 is a schematic structural diagram at B in fig. 4.

Fig. 6 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 7 is a second schematic structural diagram of a third embodiment of the utility model.

Fig. 8 is a schematic view of the structure at C in fig. 7.

Reference numerals: 1. a cover plate body; 2. a top surface; 3. a bottom surface; 4. a recessed portion; 5. a first side; 6. a second face; 7. a housing; 8. a flange edge; 9. an inner cavity; 10. round corners; a. the thickness of the cover plate body; b. the distance between the second face and the bottom face; d. a width of the first face; e. width of the second face.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 invention.

Example one

Referring to fig. 3 to 5, a battery cover plate includes: apron body 1 for the casing 7 of encapsulation box-hat battery, top surface 2 that apron body 1 was provided with and the bottom surface 3 parallel with top surface 2, the border of bottom surface 3 encircles and is provided with depressed part 4, and depressed part 4 includes first face 5, and first face 5 is connected with bottom surface 3, and first face 5 is used for laminating with the flange limit 8 of casing 7, with the area of contact of the flange limit 8 of increase apron body 1 and casing 7.

Compared with the prior art, this embodiment battery cover plate, setting through apron body 1, apron body 1 is provided with top surface 2 and bottom surface 3 parallel with top surface 2, the border of bottom surface 3 encircles and is provided with depressed part 4, depressed part 4 includes the first face 5 of being connected with bottom surface 3, during the use, with apron body 1 encapsulation on the casing 7 of battery, depressed part 4 is laminated through the flange limit 8 of first face 5 with casing 7, with the area of contact of increase apron body 1 with flange limit 8, thereby increase apron body 1 and casing 7's area of contact, effectual flange limit 8 that reduces the battery when guaranteeing the welding effect, reduce the size of battery, and then promote the energy density of battery.

In the present embodiment, the recess 4 further comprises a second face 6; one end of the second surface 6 is connected with the first surface 5, and the other end of the second surface 6 is connected with the side wall of the cover plate body 1; through the setting of second face 6, the one end and the first face 5 of second face 6 are connected, and the other end of second face 6 is connected with the lateral wall of apron body 1, and when encapsulating apron body 1 on casing 7, first face 5, second face 6 all laminate with flange 8, the area of contact of effectual increase depressed part 4 and flange 8 to increase apron body 1 and casing 7's area of contact.

In the embodiment, the first surface 5 is set as a first arc-shaped surface, the second surface 6 is set as a plane, and the first surface 5 and the second surface 6 are in transitional connection; set up to first arcwall face, second face 6 through setting up first face 5 into the plane, first face 5 and 6 transitional coupling of second face, the laminating effect of the first face 5 of effectual improvement, second face 6 and flange limit 8 to prevent to appear the gap between flange limit 8 and the depressed part 4, and then lead to the emergence of weeping problem.

In the embodiment, the thickness a of the cover plate body 1 is 0.1-1 cm, and the distance b between the second surface 6 and the bottom surface 3 is 0.05-0.5 cm; through setting up the thickness a with apron body 1 to 0.2 ~ 1cm, set up the distance b between second face 6 and the bottom surface 3 to 0.1 ~ 0.5cm, thickness a when apron body 1 is 0.2cm, when distance b between second face 6 and the bottom surface 3 is 0.1cm, thickness a by apron body 1 is thinner, the effectual size that reduces the battery, distance b between second face 6 and the bottom surface 3 is moderate, in the use, can be according to actual demand to apron body 1 thickness a, distance b between second face 6 and the bottom surface 3 sets up, simultaneously, distance b between second face 6 and the bottom surface 3 should be less than apron body 1 thickness a.

In the present embodiment, the second face 6 is disposed parallel to the bottom face 3; through second face 6 and 3 parallel arrangement of bottom surface, the effectual laminating effect that improves second face 6 and flange limit 8 prevents to appear the gap between second face 6 and the flange limit 8.

In the embodiment, the width d of the first surface 5 is 0.1-1 cm, and the width e of the second surface 6 is 0.22-1.5 cm; the width d of the first surface 5 is set to be 0.1-1 cm, the width e of the second surface 6 is set to be 0.22-1.5 cm, and the width d of the first surface 5 and the width e of the second surface 6 can be set according to the width of the flange edge 8 during use.

Example two

The difference from the first embodiment is that:

in the present embodiment, the second face 6 is provided as a second arc-shaped face; through setting up second face 6 to the second arcwall face, when the transversal arc of personally submitting of the flange limit 8 of casing 7, set up second face 6 to the second arcwall face, the effectual laminating effect that improves second face 6 and flange limit 8 prevents to appear the gap between second face 6 and the flange limit 8.

EXAMPLE III

Referring to fig. 6 to 8, a housing assembly includes a battery cover plate in the foregoing description, and further includes a housing 7; the top border of casing 7 is provided with flange 8, and apron body 1 lid is located on the opening of casing 7 and is formed with inner chamber 9 with casing 7, and depressed part 4 and the laminating of flange 8.

Compared with the prior art, the casing subassembly of this embodiment, through apron body 1, casing 7's cooperation is used, apron body 1 adopts the structure of battery apron in embodiment one or two, casing 7's top is provided with the opening, casing 7 is located open-ended border all around and is provided with flange 8, when apron body 1 lid is located casing 7's opening, depressed part 4 and the laminating of flange 8, effectual increase apron body 1 and casing 7 between the area of contact, reduce flange 8's size when guaranteeing the welding effect, thereby reduce the size of battery.

In the present embodiment, a rounded corner 10 is provided at the opening of the housing 7; through the setting of fillet 10, fillet 10 sets up in the opening part of casing 7, with the 5 laminating of first face, the area of contact between effectual increase apron body 1 and the casing 7 to the reduction reduces the influence of flange limit 8 to battery welding effect, and the gap appears between effectual apron body 1 and the casing 7 that prevents, and then leads to the appearance of the problem of battery weeping.

Example four

A battery comprising the housing assembly hereinbefore described, and further comprising a cell;

the battery cell is arranged in the inner cavity 9 and comprises a positive plate, a negative plate and a diaphragm arranged between the positive plate and the negative plate.

Compared with the prior art, this embodiment battery adopts the shell assembly in embodiment three, and the effectual size that reduces flange edge 8 when guaranteeing the welding effect to reduce the size of battery, and then improve the energy density of battery.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. A battery cover plate, comprising:

the apron body for the casing of encapsulation box-hat battery, the apron body be provided with the top surface and with the parallel bottom surface of top surface, the border of bottom surface encircles and is provided with the depressed part, the depressed part includes first face, first face with the bottom surface is connected, first face be used for with the flange limit laminating of casing, in order to increase the apron body with the area of contact on the flange limit of casing.

2. The battery cover plate of claim 1, wherein the depression further comprises a second face;

one end of the second face is connected with the first face, and the other end of the second face is connected with the side wall of the cover plate body.

3. The battery cover plate of claim 2, wherein the first face is configured as a first arcuate face and the second face is configured as a flat face, the first face being in transitional connection with the second face.

4. The battery cover plate according to claim 3, wherein the thickness of the cover plate body is 0.1 to 1cm, and the distance between the second surface and the bottom surface is 0.05 to 0.5 cm.

5. The battery cover plate according to claim 3, wherein the second face is disposed in parallel with the bottom face.

6. The battery cover plate according to claim 3, wherein the width of the first surface is 0.1 to 1cm, and the width of the second surface is 0.22 to 1.5 cm.

7. The battery cover plate of claim 2, wherein the second face is configured as a second arcuate face.

8. A case assembly comprising the battery cover plate according to any one of claims 1 to 7, and a case;

the top border of casing is provided with the flange limit, apron body lid is located on the opening of casing and with the casing is formed with the inner chamber, the depressed part with the laminating of flange limit.

9. A housing assembly according to claim 8 wherein the opening of the housing is provided with rounded corners.

10. A battery comprising the housing assembly of claim 8, and further comprising a cell;

the electric core set up in the inner chamber, the electric core includes positive plate, negative pole piece and set up in positive plate with the diaphragm between the negative pole piece.

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