CN217641569U - Hard-shell battery with welded cover plate - Google Patents

Abstract

The utility model provides a hard shell battery with welded cover plate, which comprises a box body, a cover plate and an electric core; the box body comprises a top plate and side plates; the side plates are arranged at the lower end of the top plate in parallel in sequence, a containing cavity is formed by enclosing the side plates and the top plate, and the lower ends of the side plates are provided with bosses extending outwards; the cover plate is arranged at the lower end of the box body, the cover plate is matched with the lower end of the box body, the outer end of the cover plate abuts against the boss and is welded with the boss, and the cover plate seals the accommodating cavity; the battery cell is arranged in the accommodating cavity. The utility model is used for solve flange welding back flange cutting bad, improve the gas tightness of crust battery.

Description

Hard shell battery with welded cover plate

Technical Field

The utility model belongs to the technical field of the battery, concretely relates to duricrust battery of welding apron.

Background

The hard shell battery is generally square in shape, appearance and size, has the characteristic of large volume, is often used as a power supply of various electronic products, has various types, can be divided into a silver oxide battery, a lithium battery, an alkaline manganese battery and the like according to the used materials, has certain difference in advantages and disadvantages of hard shell batteries prepared from different materials, can be selected according to different using equipment, and maximally utilizes the advantages of the hard shell batteries.

The existing hard shell battery adopts a back flange periphery welding mode during production, cutting is needed after flange welding, and the hard shell battery can be cut to a welding seam during cutting, so that the hard shell battery is poor in air tightness.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model provides a weld cover plate's crust battery for the flange cutting is bad after solving the flange welding, improves the gas tightness of crust battery.

The utility model provides a hard shell battery with welded cover plate, which comprises a box body, a cover plate and an electric core;

the box body comprises a top plate and side plates;

the side plates are arranged at the lower end of the top plate in parallel in sequence, a containing cavity is formed by enclosing the side plates and the top plate, and the lower ends of the side plates are provided with bosses extending outwards;

the cover plate is arranged at the lower end of the box body, the cover plate is matched with the lower end of the box body, the outer end of the cover plate abuts against the boss and is welded with the boss, and the cover plate seals the accommodating cavity;

the battery core is arranged in the accommodating cavity.

In the above technical solution, the utility model discloses can also do following improvement.

The preferable technical scheme is characterized in that: the connection part of the top plate and the side plates is in arc transition, two adjacent side plates are in arc transition, and the right-angle corners of the bosses are in arc transition.

The preferable technical scheme is characterized in that: the top plate, the side plates and the bosses are integrally formed.

The preferable technical scheme is characterized in that: be equipped with first explosion-proof valve on the roof, first explosion-proof valve is including setting up first recess on the roof, first recess is in just be reciprocating type helix arrangement on the roof.

The preferable technical scheme is characterized in that: be equipped with the explosion-proof valve of second on the apron, the explosion-proof valve of second is including setting up second recess on the lateral wall of apron, the second recess is in just be reciprocating type helix arrangement on the apron.

The preferable technical scheme is characterized in that: the inside wall level of boss is equipped with downward convex spacing, the upper end of apron be equipped with spacing groove of spacing looks adaptation.

The preferable technical scheme is characterized in that: and the upper end of the top plate and/or the lower end of the cover plate are/is welded with heat conducting fins.

The preferable technical scheme is characterized in that: the left side end and/or the right side end of the heat conducting fin are/is provided with a heat radiating fin, and the heat radiating fin is provided with a plurality of fins.

The preferable technical scheme is characterized in that: the upper end of the box body and/or the lower end of the cover plate are/is provided with heat dissipation covers in a sealing mode, and the left end and the right end of each heat dissipation cover are symmetrically provided with medium pipes.

The utility model also provides a manufacturing method of the crust battery of welding apron, including following step:

s1, placing the battery cell formed by winding or laminating in the box body, and welding a positive terminal and a negative terminal on the side plates with corresponding polarities;

s2, abutting the cover plate on the boss, and welding the cover plate and the boss in a laser welding or ultrasonic welding mode;

s3, performing a vacuum baking process on the assembled hard shell battery to remove moisture of the hard shell battery;

s4, injecting liquid into the hard-shell battery in a glove box or a workshop which meets the dew point;

and S5, carrying out chemical component capacity grading and sorting procedures on the hard-shell battery after liquid injection.

The beneficial effects of the utility model are that: the utility model discloses a set up box body and apron to with the lap welding in boss department, carry out the peripheral welding of apron and box body, welding back box body welding seam edge need not to cut the processing, can effectively avoid the cutting to lead to the welding pulling force that the welding seam width is not enough to lead to not enough, the problem of gas tightness is bad, the life of extension crust battery increases the security of crust battery simultaneously.

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 embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of a hard-shell battery with a welded cover plate according to embodiment 1 of the present invention.

Fig. 2 is a sectional view of a hard-shell battery with a welded lid plate according to embodiment 1 of the present invention.

Fig. 3 is a sectional view of a hard-shell battery with a welded lid plate according to embodiment 2 of the present invention.

Fig. 4 is an enlarged schematic view of part a of embodiment 2 of the present invention.

Fig. 5 is a plan view of the cartridge according to embodiment 2 of the present invention.

Fig. 6 is a bottom view of the cover plate according to embodiment 2 of the present invention.

Fig. 7 is a schematic structural view of a hard-shell battery with a welded cover plate according to embodiment 3 of the present invention.

Fig. 8 is a plan view of the cartridge according to embodiment 3 of the present invention.

Fig. 9 is a bottom view of the cover plate according to embodiment 3 of the present invention.

Fig. 10 is a schematic structural view of a hard-shell battery with a welded lid plate according to embodiment 4 of the present invention.

Fig. 11 is a flowchart of a method for manufacturing a hard-shell battery with a welded lid plate according to embodiment 5 of the present invention.

In the figure, the meaning of each symbol is as follows:

1. a box body; 11. a top plate; 111. a first explosion-proof valve; 12. a side plate; 121. a boss; 122. a limiting strip; 2. a cover plate; 21. a second explosion-proof valve; 22. a limiting groove; 3. a heat conductive sheet; 31. a heat sink; 32. a fin; 4. a heat dissipation cover; 41. a medium pipe.

Detailed Description

For further understanding of the contents, features and functions of the present invention, the following examples are given in detail:

example 1

Referring to fig. 1 to 2, the present embodiment provides a hard-shell battery with a welded cover plate, which includes a case 1, a cover plate 2 and a battery cell (not shown);

the box body 1 comprises a top plate 11 and side plates 12;

the four side plates 12 are sequentially arranged at the lower end of the top plate 11 in parallel, an accommodating cavity is formed by enclosing the four side plates 12 and the top plate 11, and the lower ends of the side plates 12 are provided with bosses 121 extending outwards;

the cover plate 2 is arranged at the lower end of the box body 1, the cover plate 2 is matched with the lower end of the box body 1, the outer end of the cover plate 2 abuts against the boss 121 and is welded with the boss 121, and the cover plate 2 seals the accommodating cavity;

the battery core is arranged in the accommodating cavity.

This embodiment is through setting up box body 1, apron 2 and electric core, 1 stamping forming of box body in this embodiment, pack into box body 1 back with electric core, through butt joint box body 1 and apron 2, wherein 2 butt joints of apron are on boss 121, carry out the peripheral welding of apron 2 and box body 1, apron 2 and boss 121 welding promptly, 1 welding seam edge of welding back box body need not to cut the processing, can effectively avoid the cutting to lead to the welding pulling force that the welding seam width is not enough leads to, the bad problem of gas tightness, the life of extension crust battery, increase the security of crust battery simultaneously.

Referring to fig. 1 and 2, the connection portion between the top plate 11 and the side plate 12 is in arc transition, two adjacent side plates 12 are in arc transition, and the right-angle corner of the boss 121 is in arc transition.

The top plate 11 and the side plate 12, the joint of two adjacent side plates and the right-angle corner of the boss 121 are made into arc transition, so that the strength of the joint is increased, and meanwhile, the attractiveness is better.

Referring to fig. 1 and 2, the top plate 11, the side plate 12 and the boss 121 are integrally formed.

Example 2

Referring to fig. 3 to 6, the present embodiment is different from embodiment 1 in that: be equipped with first explosion-proof valve 111 on roof 11, first explosion-proof valve 111 is including setting up first recess on the roof 11, first recess is in on the roof 11 and be reciprocating type helix and arrange.

This embodiment is through setting up first explosion-proof valve 111, and the first explosion-proof valve 111 that sets up includes first recess, can see through fig. 5, and the first recess of this embodiment is reciprocating type helix on roof 11 and arranges, and under the inside pressure in the twinkling of an eye of electric core, opening that first explosion-proof valve 111 can be quick, and the part that surrounds through first recess on roof 11 promptly can tear fast and open, realizes the pressure release to electric core, avoids because of the human injury that the battery explosion leads to and even fire incident.

The first groove of the present embodiment may be disposed on the inner sidewall and/or the outer sidewall of the top plate 11, and the first groove serves as a tear mark of the top plate 11, so that when the top plate 11 exceeds a preset pressure, the sidewall of the top plate 11 tears open along the tear mark, and the pressure is rapidly released.

In addition, the first groove on the side wall of the top plate 11 in this embodiment is formed by sequentially connecting multiple sections of U-shaped grooves, two adjacent U-shaped grooves share one side edge, when the first explosion-proof valve 111 is opened, multiple strip-shaped pieces can be formed on the side wall of the top plate 11, the design of the multi-section reciprocating spiral line structure also enables the first explosion-proof valve 111 to be opened more thoroughly, and the processing is relatively easier.

Referring to fig. 6, a second explosion-proof valve 21 is disposed on the cover plate 2, and the second explosion-proof valve 21 includes a second groove disposed on a side wall of the cover plate 2, and the second groove is disposed on the cover plate 2 and is in a reciprocating spiral arrangement.

This embodiment is through setting up the explosion-proof valve of second 21, and the explosion-proof valve of second 21 that sets up includes the second recess, can see through fig. 6, and the second recess of this embodiment is reciprocating type helix on apron 2 and arranges, and under the inside pressure in the twinkling of an eye of electric core, the explosion-proof valve of second 21 can be quick opens, and the part that encloses through the second recess on apron 2 promptly can tear fast and open, realizes the pressure release to electric core, avoids because of the human injury that battery explosion leads to and even fire incident.

The second groove of this embodiment may be disposed on the inner sidewall and/or the outer sidewall of the cover plate 2, and the second groove is used as a tear mark of the cover plate 2, so that when the cover plate 2 exceeds a preset pressure, the sidewall of the cover plate 2 is torn open along the tear mark, and the pressure is quickly released.

In addition, the second groove on the side wall of the cover plate 2 in the embodiment is formed by sequentially connecting multiple sections of U-shaped grooves, two adjacent U-shaped grooves share one side edge, when the second explosion-proof valve 21 is opened, multiple strip-shaped pieces can be formed on the side wall of the cover plate 2, the design of the multi-section reciprocating spiral line structure also enables the second explosion-proof valve 21 to be opened more thoroughly, and the processing is relatively easier.

Referring to fig. 3 and 4, the inner side wall of the boss 121 is horizontally provided with a downwardly protruding limiting strip 122, and the upper end of the cover plate 2 is provided with a limiting groove 22 adapted to the limiting strip 122.

Through setting up spacing strip 122 and spacing groove 22, spacing strip 122 can be embedded into corresponding spacing groove 22, makes the location equipment of boss 121 and apron 2 more accurate.

Example 3

Referring to fig. 7 and 9, the present embodiment is different from embodiment 1 in that: the upper end of the top plate 11 and the lower end of the cover plate 2 are welded with heat conducting fins 3.

Referring to fig. 8 and 9, the heat sink 31 is disposed at both the left side end and the right side end of the heat conducting plate 3, and a plurality of fins 32 are disposed on the heat sink 31.

Through setting up conducting strip 3 and fin 31, can derive the heat that the battery during operation produced fast, safer to the use of battery, fin 32 that sets up is the several and sets up side by side on fin 31, and fin 32 is used for increasing heat radiating area.

Example 4

Referring to fig. 10, the difference between the present embodiment and embodiment 1 is: the upper end of the box body 1 and the lower end of the cover plate 2 are provided with heat dissipation covers 4 in a sealing mode, and the left end and the right end of each heat dissipation cover 4 are symmetrically provided with medium pipes 41.

Through setting up heat dissipation lid 4, be equipped with heat-conducting liquid in the heat dissipation lid 4, two medium pipes 41, one advances the pipe for heat-conducting liquid, and one is the heat-conducting liquid exit tube, through adding heat-conducting liquid toward in the heat dissipation lid 4, can take away the heat that the crust battery produced fast.

Example 5

Referring to fig. 11, the present embodiment further provides a method for manufacturing a hard-shell battery with a welded cover plate, including the following steps:

s1, placing the battery cell formed by winding or laminating in the box body 1, and welding a positive terminal and a negative terminal on the side plates 12 with corresponding polarities;

s2, abutting the cover plate 2 on the boss 121, and welding the cover plate 2 and the boss 121 in a laser welding or ultrasonic welding mode;

s3, performing a vacuum baking process on the assembled hard-shell battery to remove moisture of the hard-shell battery;

s4, injecting liquid into the hard-shell battery in a glove box or a workshop which accords with a dew point;

and S5, carrying out chemical component capacity grading and sorting procedures on the hard-shell battery after liquid injection.

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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but 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.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features being indicated. Thus, a feature defined as "a" or "a second" can explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a feature "on" or "under" a second feature may be in direct contact with the second feature or in indirect contact with the second feature through intervening media. Also, a feature "on," "over," and "on" a second feature may be directly on or obliquely over the second feature, or may simply mean that the feature is at a higher level than the second feature. A feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (9)

1. A hard-shelled battery welded to a cover plate, comprising: comprises a box body, a cover plate and a battery cell;

the box body comprises a top plate and side plates;

the side plates are arranged at the lower end of the top plate in parallel in sequence, a containing cavity is formed by enclosing the side plates and the top plate, and a boss extending outwards is arranged at the lower end of each side plate;

the cover plate is arranged at the lower end of the box body, the cover plate is matched with the lower end of the box body, the outer end of the cover plate abuts against the boss and is welded with the boss, and the cover plate seals the accommodating cavity;

the battery core is arranged in the accommodating cavity.

2. The hard-shell battery of claim 1, wherein: the connection part of the top plate and the side plates is in arc transition, two adjacent side plates are in arc transition, and the right-angle corners of the bosses are in arc transition.

3. The hard-shell battery of claim 2, wherein: the top plate, the side plate and the boss are integrally formed.

4. The hard-shell battery of claim 1, wherein: be equipped with first explosion-proof valve on the roof, first explosion-proof valve is including setting up first recess on the roof, first recess is in just be reciprocating type helix arrangement on the roof.

5. The hard-shell battery of claim 4, wherein: the cover plate is provided with a second explosion-proof valve, the second explosion-proof valve comprises a second groove arranged on the side wall of the cover plate, and the second groove is formed in the cover plate and is arranged in a reciprocating spiral line mode.

6. The hard-shell battery of claim 1, wherein: the inside wall level of boss is equipped with downward convex spacing, the upper end of apron be equipped with spacing groove of spacing looks adaptation.

7. The hard-shell battery of claim 1, wherein: and heat conducting fins are welded at the upper end of the top plate and/or the lower end of the cover plate.

8. The hard-shell battery of claim 7, wherein: the left side end and/or the right side end of the heat conducting fin are/is provided with a heat radiating fin, and the heat radiating fin is provided with a plurality of fins.

9. The hard-shell battery of claim 1, wherein: the upper end of the box body and/or the lower end of the cover plate are/is provided with heat dissipation covers in a sealing mode, and the left end and the right end of each heat dissipation cover are symmetrically provided with medium pipes.

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