CN217114728U

CN217114728U - Knot formula steel-shelled explosion-proof battery structure

Info

Publication number: CN217114728U
Application number: CN202220521971.0U
Authority: CN
Inventors: 戈志敏; 肖海燕; 刘小华
Original assignee: Xinyu Ganfeng Electronics Co Ltd
Current assignee: Xinyu Ganfeng Electronics Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-08-02
Anticipated expiration: 2032-03-11

Abstract

The utility model provides a knot formula box hat explosion-proof battery structure. Knot formula steel-shelled explosion-proof battery structure include the casing with accept in naked electric core in the casing, the casing includes first cap and installs second cap on the first cap, first cap with one in the second cap seted up the intercommunication external world with the notes liquid hole of casing inner chamber, it is located to annotate the liquid hole first cap perhaps the centre of a circle department of second cap, annotate the downthehole sealed nail of installing of liquid, naked electric core includes the electric core main part and locates respectively the first utmost point ear and the second utmost point ear of electric core main part upper and lower both ends face, the position that sets up of first utmost point ear with the position that sets up of first cap is corresponding. The utility model provides a knot formula box hat explosion-proof battery structure, electrolyte pass through the hole injection on the utmost point ear, guarantee the stability of electrolyte solution volume, and the counter sink structure of design easily welds, promotes production manufacturability.

Description

Knot formula steel-shelled explosion-proof battery structure

Technical Field

The utility model relates to a knot formula box hat explosion-proof battery structure.

Background

Referring to fig. 1, the conventional button steel-case battery includes a first case cover 1 and a second case cover 3 mounted on the first case cover 1, and the first case cover is provided with a liquid injection hole 5 communicating with the outside and an inner cavity of the first case cover. The existing button steel shell battery is injected with liquid through a liquid injection hole or an open opening after welding positive and negative lugs, and the liquid injection hole is affected by the welding position of the lugs, so that the existing button steel shell battery adopts an eccentric design. The existing button steel shell battery has the following defects: firstly, the eccentric design of the liquid injection hole has high requirements on subsequent processing and positioning, and the batch production is influenced; secondly, the liquid is injected eccentrically, the electrolyte is not easy to absorb at the position of the winding core body, the electrolyte is easy to overflow, the welding quality is influenced, the leakage is generated, and the product performance is poor; finally, the open type opening is easy to inject electrolyte, the injected electrolyte is unstable in amount, vacuum injection cannot be achieved, the electrolyte infiltration time is long, the production efficiency is affected, the electrolyte is easy to seep after the cover is closed, the surface electrolyte is polluted, and the sealing welding is affected to cause poor leakage.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a knot formula box hat explosion-proof battery structure.

The utility model provides a button steel shell explosion-proof battery structure, which comprises a shell and a naked electric core contained in the shell, wherein the shell comprises a first shell cover and a second shell cover arranged on the first shell cover, one of the first shell cover and the second shell cover is provided with a liquid injection hole communicated with the outside and the inner cavity of the shell, the liquid injection hole is positioned at the circle center of the first shell cover or the second shell cover, a sealing nail is arranged in the liquid injection hole, the naked electric core comprises an electric core main body and a first electrode lug and a second electrode lug which are respectively arranged at the upper end surface and the lower end surface of the electric core main body, the setting position of the first electrode lug corresponds to the setting position of the first shell cover, the setting position of the second electrode lug corresponds to the setting position of the second shell cover, one of the first electrode lug and the second electrode lug is provided with a liquid guide hole, the opening position of the liquid guide hole corresponds to the opening position of the liquid injection hole, and the aperture of the liquid guide hole is smaller than that of the liquid injection hole.

Furthermore, the drainage holes are formed in a plurality of numbers, and the drainage holes are uniformly distributed around the circumference.

Furthermore, the liquid injection hole is formed in the first shell cover.

Furthermore, annotate the liquid hole and include the blind hole and set up in through-hole on the blind hole diapire, the aperture of through-hole is greater than the aperture of drain hole.

Furthermore, the first pole lug is fixedly connected with the inner top wall of the first shell cover in a laser welding mode, and the second pole lug is fixedly connected with the inner top wall of the second shell cover in a laser welding mode.

The utility model discloses a knot formula box-hat explosion-proof battery structure, including the casing with accept in naked electric core in the casing, a among first cap and the second cap seted up the liquid injection hole of the external and casing inner chamber of intercommunication, annotate the centre of a circle department that the liquid hole is located first cap or second cap, annotate the downthehole seal nail of installing of liquid, naked electric core includes electric core main part and locates first utmost point ear and the second utmost point ear of electric core main part upper and lower both ends face respectively, a drainage hole has been seted up to one among first utmost point ear and the second utmost point ear, the drainage hole set up the position and annotate the position of seting up of liquid hole corresponding, the aperture of drainage hole is less than annotates the liquid hole.

The utility model discloses a knot formula box hat explosion-proof battery structure, electrolyte pass through the hole injection on the utmost point ear, guarantee the stability of electrolyte solution volume, and the counter sink structure of design easily welds, promotes production manufacturability. In addition, simple process compares with same volume battery, has avoided utmost point ear S type bending connection mode, improves electric core space utilization and factor of safety.

Drawings

FIG. 1 is a schematic structural diagram of a conventional button steel-shell explosion-proof battery structure;

fig. 2 is a schematic view of the three-dimensional structure of the button steel-shell explosion-proof battery structure of the present invention;

fig. 3 is an exploded view of the button type steel case explosion-proof battery structure shown in fig. 2.

Description of reference numerals:

first cap 1, naked electric core 2, first utmost point ear 21, second cap 3, sealed nail 4, annotate liquid hole 5, utmost point ear hole 6.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different 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.

Referring to fig. 2-3, the present invention provides a buckle-type steel shell explosion-proof battery structure, which comprises a housing and a bare cell 2 housed in the housing, wherein the housing comprises a first housing cover 1 and a second housing cover 3 mounted on the first housing cover, one of the first housing cover and the second housing cover is provided with a liquid injection hole 5 for communicating with the outside and the inner cavity of the housing, the liquid injection hole is located at the center of the first housing cover or the second housing cover, a sealing nail 4 is mounted in the liquid injection hole, the bare cell comprises a cell main body and a first tab 21 and a second tab respectively disposed on the upper and lower end faces of the cell main body, the setting position of the first tab corresponds to the setting position of the first housing cover, the setting position of the second tab corresponds to the setting position of the second housing cover, one of the first tab and the second tab is provided with a liquid guide hole 6, the opening position of the liquid guide hole corresponds to the opening position of the liquid injection hole, and the aperture of the liquid guide hole is smaller than that of the liquid injection hole.

Wherein, the utility model discloses a knot formula box-hat explosion-proof battery structure pours into electrolyte into through annotating the liquid hole, and the electrolyte passes through the aperture on the utmost point ear (leading the liquid hole promptly) can flow into the interior spatial position in the middle of the battery fast, seals with sealed nail welding at last annotate the liquid hole.

In one embodiment, the drainage holes are provided in a plurality, and the drainage holes are uniformly distributed around the circumference.

In one embodiment, the pour hole opens in the first case lid. It will be appreciated that in another embodiment, the liquid injection hole may be formed in the second case lid.

In one embodiment, the liquid injection hole comprises a blind hole and a through hole formed in the bottom wall of the blind hole, and the diameter of the through hole is larger than that of the liquid guide hole.

In one embodiment, the first tab is fixedly connected to the inner top wall of the first housing cover by laser welding, and the second tab is fixedly connected to the inner top wall of the second housing cover by laser welding.

Wherein, the utility model discloses a knot formula box hat explosion-proof battery structure, all welds and all externally welds, has avoided the welding dust to leave over battery inefficacy and the potential safety hazard that causes inside the battery.

The above embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a knot formula steel-shelled explosion-proof battery structure which characterized in that: the battery comprises a shell and a naked battery cell accommodated in the shell, wherein the shell comprises a first shell cover and a second shell cover arranged on the first shell cover, one of the first shell cover and the second shell cover is provided with a liquid injection hole communicated with the outside and an inner cavity of the shell, the liquid injection hole is positioned in the circle center of the first shell cover or the second shell cover, a sealing nail is arranged in the liquid injection hole, the naked battery cell comprises a battery cell main body and a first lug and a second lug which are respectively arranged on the upper end surface and the lower end surface of the battery cell main body, the setting position of the first lug corresponds to the setting position of the first shell cover, the setting position of the second lug corresponds to the setting position of the second shell cover, one of the first lug and the second lug is provided with a liquid guide hole, and the setting position of the liquid guide hole corresponds to the setting position of the liquid injection hole, the aperture of the liquid guide hole is smaller than that of the liquid injection hole.

2. A button steel case explosion-proof battery structure as defined in claim 1, characterized in that: the liquid guide holes are formed in a plurality of numbers, and the liquid guide holes are uniformly distributed around the circumference.

3. A button steel case explosion-proof battery structure as defined in claim 2, characterized in that: the liquid injection hole is formed in the first shell cover.

4. A button steel case explosion-proof battery structure as defined in claim 3, characterized in that: the liquid injection hole comprises a blind hole and a through hole formed in the bottom wall of the blind hole, and the aperture of the through hole is larger than that of the liquid guide hole.

5. A button steel-shell explosion-proof battery structure as defined in claim 4, characterized in that: the first pole lug is fixedly connected with the inner top wall of the first shell cover in a laser welding mode, and the second pole lug is fixedly connected with the inner top wall of the second shell cover in a laser welding mode.