CN219163619U

CN219163619U - A explosion-proof valve block structure for on new energy battery

Info

Publication number: CN219163619U
Application number: CN202223238965.3U
Authority: CN
Inventors: 孙燕萍; 方智亮; 阮兴邦
Original assignee: Guangdong Huazhan Electronic Co ltd
Current assignee: Guangdong Huazhan Electronic Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-06-09
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses an anti-explosion valve plate structure for a new energy battery, which comprises a body, wherein the body is of a metal sheet structure, one surface of the body is an outward external connection surface, and the other surface of the body is an inward internal connection surface which is contacted with the new energy battery. Through having seted up the bleeder vent in ventilative district, in the use, the inscription face is covered ventilated membrane and is contacted with the electrolyte, the gaseous gas that the electrolyte produced can permeate ventilated membrane and discharge from the bleeder vent, avoided gaseous accumulation, the life of new energy battery has been prolonged greatly, simultaneously, through designing the bleeder vent into the toper round hole, the internal diameter of bleeder vent is reduced gradually to external face by inscription face, and the corner between bleeder vent and the inscription face is the fillet, so can effectively reduce and produce the burr between inscription face and the bleeder vent, avoid ventilated membrane to be punctured, greatly reduced battery weeping risk, thereby avoid the emergence of serious phenomena such as fire, explosion, the security that has improved the product and used.

Description

A explosion-proof valve block structure for on new energy battery

Technical Field

The utility model relates to the technology in the field of anti-explosion valve plates, in particular to an anti-explosion valve plate structure for a new energy battery.

Background

The new energy battery pack is formed by stacking a plurality of batteries in series. A typical battery pack has about 96 cells, and for a lithium ion battery charged to 4.2V, such a battery pack can produce a total voltage in excess of 400V. Although the car power system regards the battery as a single high-voltage battery, charging and discharging the entire battery at a time, the battery control system must consider the situation of each battery independently. If one cell in the battery is slightly lower in capacity than the other cells, its state of charge will gradually deviate from the other cells over multiple charge/discharge cycles. If the state of charge of this cell is not periodically balanced with other cells, it will eventually enter a deep discharge state, resulting in damage and eventually a battery failure. To prevent this, the voltage of each battery must be monitored to determine the state of charge. In addition, a means must be provided for allowing the batteries to charge or discharge individually to balance the charge state of the batteries.

In order to improve the explosion-proof safety of the new energy battery, the inside of the existing new energy battery is additionally provided with an explosion-proof valve plate, the explosion-proof valve plate plays a role in pressure relief and explosion prevention in the new energy battery, and the explosion-proof valve plate is usually made of a metal sheet. In the prior art, the anti-explosion valve plate is of a closed structure, and is not provided with any vent hole structure, and the anti-explosion valve plate is usually disposable, so that the service life of the new energy battery is shorter. Therefore, it is necessary to study a scheme to solve the above-mentioned problems.

Disclosure of Invention

In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its primary object is to provide an anti-explosion valve plate structure for a new energy battery, which can effectively solve the problem that the service life of the new energy battery is shorter due to the closed structure of the existing anti-explosion valve plate.

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

the utility model provides an explosion-proof valve block structure for on new energy battery, including the body, this body is sheet metal structure, and one surface of this body is external face outwards, and another surface of this body is internal face inwards, has at least one ventilative district on the body, and the punching press is formed with a plurality of bleeder vents in each ventilative district, and every bleeder vent all runs through internal face and external face, and this bleeder vent is the toper round hole, and the internal diameter of bleeder vent is reduced gradually towards external face by the inscription, and the corner between bleeder vent and the inscription face is the chamfer.

As a preferred scheme, the bleeder vent is including the toper section and the straight section of thick bamboo of axial intercommunication, and the one end and the straight section of thick bamboo of the minimum internal diameter of toper section communicate, and the minimum internal diameter of toper section is greater than the internal diameter of straight section of thick bamboo, and the corner between the one end of the maximum internal diameter of toper section and the inscription face is the fillet to avoid producing the burr better.

As a preferred embodiment, the axial length of the conical section is greater than the axial length of the straight section.

As a preferable scheme, a plurality of positioning holes which are distributed at intervals are formed on two opposite edges of the body so as to be convenient for fixing the body with the external installation.

As a preferable scheme, a plurality of locating holes which are distributed at intervals are formed in one edge of the body, and a plurality of strip-shaped holes are formed in the other opposite edge of the body, so that the body and the outside are adjusted, aligned and installed, and the installation is simpler and more convenient.

As a preferable scheme, one ventilation hole is positioned at the central position of the ventilation area, and the other ventilation holes are uniformly distributed around the ventilation holes at the central position at intervals so as to be matched with the distribution of corresponding new energy batteries.

As a preferable scheme, the plurality of ventilation holes on each ventilation area are in a square structure with two rows and two columns so as to be matched with the arrangement of the corresponding new energy batteries.

As a preferable scheme, the plurality of ventilation holes on each ventilation area are arranged in a plurality of rows, and the ventilation holes of two adjacent rows are staggered with each other so as to be matched with the arrangement of the corresponding new energy batteries.

As a preferable scheme, the plurality of ventilation holes on each ventilation area are arranged in two rows, and the ventilation holes in two rows are arranged opposite to each other so as to be matched with the arrangement of the corresponding new energy batteries.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and in particular, the technical scheme can be as follows:

through having seted up the bleeder vent in ventilative district, in the use, the inscription face is covered ventilated membrane and is contacted with the electrolyte, the gaseous gas that the electrolyte produced can permeate ventilated membrane and discharge from the bleeder vent, avoided gaseous accumulation, the life of new energy battery has been prolonged greatly, simultaneously, through designing the bleeder vent into the toper round hole, the internal diameter of bleeder vent is reduced gradually to external face by inscription face, and the corner between bleeder vent and the inscription face is the fillet, so can effectively reduce and produce the burr between inscription face and the bleeder vent, avoid ventilated membrane to be punctured, greatly reduced battery weeping risk, thereby avoid the emergence of serious phenomena such as fire, explosion, the security that has improved the product and used.

Drawings

FIG. 1 is a schematic perspective view of a first preferred embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a first preferred embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of FIG. 2 at position A;

FIG. 4 is a schematic perspective view of a second preferred embodiment of the present utility model;

FIG. 5 is a perspective view of a third preferred embodiment of the present utility model;

FIG. 6 is a perspective view of a fourth preferred embodiment of the present utility model;

FIG. 7 is a schematic perspective view of a fifth preferred embodiment of the present utility model;

fig. 8 is a perspective view of a sixth preferred embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. body 11, external surface

12. Inner joint face 101 and ventilation holes

1011. Conical section 1012, straight section

102. Rounded 103 and positioning hole

104. Positioning holes 105 and strip-shaped holes.

Detailed Description

Referring to fig. 1 to 3, a specific structure of a first preferred embodiment of the present utility model is shown, which includes a body 10.

The body 10 is a metal sheet structure, such as an aluminum plate, a copper plate or an aluminum alloy, etc., one surface of the body 10 is an outward external connection surface 11, the other surface of the body 10 is an inward internal connection surface 12, the body 10 is provided with at least one ventilation area, a plurality of ventilation holes 101 are punched in each ventilation area, each ventilation hole 101 penetrates through the internal connection surface 12 and the external connection surface 11, the ventilation holes 101 are conical round holes, the inner diameter of the ventilation holes 101 gradually decreases from the internal connection surface 12 to the external connection surface 11, and corners between the ventilation holes 101 and the internal connection surface 12 are rounded corners 102, so that burrs generated between the internal connection surface 12 and the ventilation holes 101 are effectively reduced.

Specifically, the ventilation hole 101 includes a tapered section 1011 and a straight section 1012 which are axially connected, one end of the smallest inner diameter of the tapered section 1011 is connected with the straight section 1012, the smallest inner diameter of the tapered section 1011 is larger than the inner diameter of the straight section 1012, and the corner between one end of the largest inner diameter of the tapered section 1011 and the inscription face 11 is rounded to better avoid burrs. And the axial length of the tapered section 1011 is greater than the axial length of the straight section 1012. In addition, one of the ventilation holes 101 is located at the center of the ventilation area, the other ventilation holes 101 are uniformly distributed around the ventilation holes 101 at intervals at the center, seven ventilation holes 101 are formed in each ventilation area, the number of the ventilation areas is not limited, and the ventilation areas are three which are uniformly distributed at intervals in the transverse direction.

And, a plurality of positioning holes 103 are formed on two opposite edges of the body 10 at intervals, so as to position the body 10 with the outside, the positioning holes 103 are circular holes, and a plurality of positioning holes 103 are formed on two opposite sides of the body 10, which is not limited.

During manufacturing, the ventilation holes 101 are punched on the ventilation areas corresponding to the body 10 through punching equipment. When the novel energy battery is used, the breathable film is coated on the inner joint surface 12 and then is arranged in the novel energy battery, the breathable film is in contact with electrolyte in the novel energy battery, and in the use process of the battery, gas generated by the electrolyte is discharged from the ventilation holes 101 after passing through the breathable film.

Referring to fig. 4, a specific structure of a second preferred embodiment of the present utility model is shown, which is substantially the same as that of the first preferred embodiment, except that:

in this embodiment, the plurality of ventilation holes 101 in each ventilation area are in a square structure with two rows and two columns, and each ventilation area has four ventilation holes 101. And, a plurality of locating holes 104 that the interval was arranged are offered to this body 10's one edge, and a plurality of bar holes 105 are offered to another opposite edge to make body 10 and outside adjust the counterpoint installation, the installation is simpler and more convenient.

Referring to fig. 5, a third preferred embodiment of the present utility model is shown, which is substantially the same as the first preferred embodiment except that:

in this embodiment, the plurality of ventilation holes 101 on each ventilation area are arranged in multiple rows, and the ventilation holes 101 of two adjacent rows are staggered with each other, specifically, the ventilation holes 101 are three rows, wherein the ventilation holes 101 of the middle row are composed of six ventilation holes 101 which are equally arranged at intervals, and the ventilation holes 101 of the two side rows are composed of seven ventilation holes 101 which are equally arranged at intervals.

Referring to fig. 6, a specific structure of a fourth preferred embodiment of the present utility model is shown, which is substantially the same as that of the third preferred embodiment, except that:

in this embodiment, the ventilation holes 101 are three rows, wherein the ventilation holes 101 in the middle row are composed of six ventilation holes 101 which are equally arranged at intervals, and the ventilation holes 101 in the two side rows are composed of five ventilation holes 101 which are equally arranged at intervals.

Referring to fig. 7, a fifth preferred embodiment of the present utility model is shown, which is substantially the same as the third preferred embodiment, except that:

in this embodiment, the ventilation holes 101 are three rows, wherein the ventilation holes 101 in the middle row are composed of four ventilation holes 101 which are equally arranged at intervals, and the ventilation holes 101 in the two side rows are composed of three ventilation holes 101 which are equally arranged at intervals.

Referring to fig. 7, a fifth preferred embodiment of the present utility model is shown, which is substantially the same as the first preferred embodiment except that:

in this embodiment, the plurality of ventilation holes 101 in each ventilation area are arranged in two rows, the ventilation holes 101 in two rows are disposed opposite to each other, and each row of ventilation holes 101 is composed of seven ventilation holes 101 equally arranged at intervals.

The design focus of the utility model is that: through having seted up the bleeder vent in ventilative district, in the use, the inscription face is covered ventilated membrane and is contacted with the electrolyte, the gaseous gas that the electrolyte produced can permeate ventilated membrane and discharge from the bleeder vent, avoided gaseous accumulation, the life of new energy battery has been prolonged greatly, simultaneously, through designing the bleeder vent into the toper round hole, the internal diameter of bleeder vent is reduced gradually to external face by inscription face, and the corner between bleeder vent and the inscription face is the fillet, so can effectively reduce and produce the burr between inscription face and the bleeder vent, avoid ventilated membrane to be punctured, greatly reduced battery weeping risk, thereby avoid the emergence of serious phenomena such as fire, explosion, the security that has improved the product and used.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.

Claims

1. The utility model provides an explosion-proof valve block structure for on new energy battery, includes the body, and this body is sheet metal structure, its characterized in that: one surface of the body is an outward external connection surface, the other surface of the body is an inward internal connection surface, at least one ventilation area is arranged on the body, a plurality of ventilation holes are punched in each ventilation area, each ventilation hole penetrates through the internal connection surface and the external connection surface, the ventilation holes are conical round holes, the inner diameter of the ventilation holes is gradually reduced from the internal connection surface to the external connection surface, and corners between the ventilation holes and the internal connection surface are rounded corners.

2. The explosion proof valve plate structure for a new energy battery according to claim 1, wherein: the breather hole comprises a conical section and a straight section which are axially communicated, one end of the minimum inner diameter of the conical section is communicated with the straight section, the minimum inner diameter of the conical section is larger than the inner diameter of the straight section, and the corner between one end of the maximum inner diameter of the conical section and the inscription surface is a rounding angle.

3. The explosion proof valve plate structure for new energy battery according to claim 2, wherein: the axial length of the conical section is greater than that of the straight section.

4. The explosion proof valve plate structure for a new energy battery according to claim 1, wherein: a plurality of locating holes which are distributed at intervals are formed in two opposite edges of the body.

5. The explosion proof valve plate structure for a new energy battery according to claim 1, wherein: a plurality of locating holes which are distributed at intervals are formed in one edge of the body, and a plurality of strip-shaped holes are formed in the other opposite edge of the body.

6. The explosion proof valve plate structure for a new energy battery according to claim 1, wherein: one of the ventilation holes is positioned at the central position of the ventilation area, and the other ventilation holes are uniformly distributed around the ventilation holes at the central position at intervals.

7. The explosion proof valve plate structure for a new energy battery according to claim 1, wherein: the plurality of ventilation holes on each ventilation area are in a square structure with two rows and two columns.

8. The explosion proof valve plate structure for a new energy battery according to claim 1, wherein: the ventilation holes in each ventilation area are arranged in a plurality of rows, and the ventilation holes in two adjacent rows are staggered.

9. The explosion proof valve plate structure for a new energy battery according to claim 1, wherein: the ventilation holes in each ventilation area are arranged in two rows, and the ventilation holes in the two rows are opposite to each other.