CN214176121U

CN214176121U - Cap for low-capacity nickel-metal hydride battery

Info

Publication number: CN214176121U
Application number: CN202022965207.6U
Authority: CN
Inventors: 黄百胜
Original assignee: Huizhou Yulong Battery Fittings Co ltd
Current assignee: Huizhou Yulong Battery Fittings Co ltd
Priority date: 2020-12-12
Filing date: 2020-12-12
Publication date: 2021-09-10
Anticipated expiration: 2030-12-12

Abstract

The utility model discloses a low capacity is cap for nickel-hydrogen battery, including the sealing washer, be fixed with explosion-proof cap between the inner wall of sealing washer, the top of explosion-proof cap is equipped with the upper cover, fixedly connected with connection pad between the inner wall of sealing washer, the last fixed surface of connection pad is connected with V type shell fragment, the other end fixedly connected with connecting rod of V type shell fragment, the both sides of connecting rod are close to the position fixedly connected with dog of bottom, the spacing support of last fixed surface of connection pad is connected with L type, the top of connection pad is equipped with the bar shell fragment. The utility model discloses in, in the spacing within range of the spacing support of L type, the top of connecting rod offsets UNICOM with the bottom of explosion-proof cap all the time, can effectively reduce the manufacturing accuracy requirement of block, practices thrift the cost, and the bar shell fragment has certain effort to the sealing washer, and this effort makes further compressing tightly of sealing washer on battery body, improves the leakproofness of block and battery body.

Description

Cap for low-capacity nickel-metal hydride battery

Technical Field

The utility model relates to a battery block technical field especially relates to a block for low capacity nickel-hydrogen battery.

Background

The nickel-hydrogen battery adopts high-conductivity electrolyte, has small internal resistance and can adapt to large-current discharge, so that the nickel-hydrogen battery can be divided into a low-rate battery, a medium-rate battery and a high-rate battery, and the nickel-hydrogen battery has wide application. The cap is an important safety guarantee part of the nickel-hydrogen battery, the structure and the production process of the cap directly or indirectly influence the performance of the battery and the manufacturing cost of a battery manufacturer, for overheat protection, the electrical connection between an explosion-proof cap in the battery cap and a connecting rod or a connecting disc is usually set to be point contact or line contact at present, the requirement on the manufacturing precision of the cap is higher, the sealing effect is influenced by poor quality of a traditional sealing ring, liquid leakage is easy, small aluminum sheets are deformed or directly fall off, and positive and negative short circuit is easy to cause.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a cap for a low-capacity nickel-metal hydride battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a low capacity is cap for nickel-hydrogen battery, includes the sealing washer, link up from top to bottom in the middle part of sealing washer and be equipped with the cavity, be close to upper end department between the inner wall of sealing washer and be fixed with explosion-proof cap, the top of explosion-proof cap is equipped with the upper cover, the outward flange of explosion-proof cap is equipped with the binding face, just the binding face inwards bends the parcel upper cover, be close to bottom fixedly connected with connection pad between the inner wall of sealing washer, the last fixed surface of connection pad is connected with V type shell fragment, the other end fixedly connected with connecting rod of V type shell fragment, the both sides of connecting rod are close to the position fixedly connected with dog of bottom, the last fixed surface of connection pad is connected with the spacing support of L type, just the horizontal segment of the spacing support of L type is located with the dog squarely, the top of connection pad is equipped with the bar shell fragment.

As a further description of the above technical solution:

the anti-explosion cap and the edge covering surface are integrally formed, the included angle between the edge covering surface and the anti-explosion cap before being bent is set to be 90-135 degrees, and the anti-explosion cap and the edge covering surface are connected with the upper cover in an enhanced mode through laser welding or ultrasonic welding.

As a further description of the above technical solution:

the middle part of the upper cover is provided with an upward first bulge, and a first vent hole is formed in the inclined plane of the first bulge.

As a further description of the above technical solution:

the middle part of the anti-explosion cap is provided with a downward second bulge, the second bulge is initially provided with an arc shape, and the second bulge has large deformation capacity.

As a further description of the above technical solution:

an explosion-proof cavity is formed between the first bulge and the second bulge.

As a further description of the above technical solution:

the top of the connecting rod is abutted to the lower surface of the second protrusion.

As a further description of the above technical solution:

and a plurality of second vent holes are formed in the connecting disc.

As a further description of the above technical solution:

the strip-shaped elastic pieces are uniformly distributed along the circumferential direction and are provided with horizontal sections, inclined sections and vertical sections, one horizontal section of each strip-shaped elastic piece is fixedly connected with the inner wall of the sealing ring, and the vertical sections of the strip-shaped elastic pieces are abutted to the outer surface of the connecting rod.

As a further description of the above technical solution:

the connecting disc, the V-shaped elastic sheet, the connecting rod, the explosion-proof cap and the upper cover are made of conductive materials.

The utility model discloses following beneficial effect has:

1. this low capacity is cap for nickel-hydrogen battery through the setting of the spacing support of V type shell fragment, L type and stopper for in the spacing within range of the spacing support of L type, the top of connecting rod offsets UNICOM with the bottom of explosion-proof cap all the time, can effectively reduce the manufacturing accuracy requirement of block, practices thrift the cost.

2. This block for low capacity nickel-hydrogen battery, bar shell fragment and connecting rod counterbalance take place to warp, make bar shell fragment have certain effort to the sealing washer, and this effort makes further compressing tightly of sealing washer on battery body, improves the leakproofness of block and battery body.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the structure at a-a of the present invention.

Fig. 3 is a schematic structural view of the explosion-proof cap before the edge covering surface is not bent.

Illustration of the drawings: 1. a seal ring; 2. binding the edge surface; 3. an upper cover; 4. a first vent hole; 5. a first protrusion; 6. an explosion-proof cavity; 7. a second protrusion; 8. a connecting disc; 9. an L-shaped limiting bracket; 10. a stopper; 11. A V-shaped elastic sheet; 12. a second vent hole; 13. a strip-shaped elastic sheet; 14. a cavity; 15. an explosion-proof cap; 16. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a low capacity is cap for nickel-hydrogen battery, including sealing washer 1, it is equipped with cavity 14 to link up from top to bottom at the middle part of sealing washer 1, it is fixed with explosion-proof cap 15 to be close to upper end department between the inner wall of sealing washer 1, the top of explosion-proof cap 15 is equipped with upper cover 3, the outward flange of explosion-proof cap 15 is equipped with bordure face 2, and bordure face 2 inwards bends the parcel upper cover 3, be close to bottom fixedly connected with connection pad 8 between the inner wall of sealing washer 1, the last fixed surface of connection pad 8 is connected with V type shell fragment 11, the other end fixedly connected with connecting rod 16 of V type shell fragment 11, the fixed position that the both sides of connecting rod 16 are close to the bottom has dog 10, the spacing support 9 of last fixed surface of connection pad 8 is connected with L type, and the horizontal segment of the spacing support 9 of L type is located square with dog 10, the top of connection pad 8 is equipped with bar shell fragment 13.

The anti-explosion cap 15 and the edge covering face 2 are integrally formed, the included angle between the edge covering face 2 and the anti-explosion cap 15 before being bent is preferably set to be 90-135 degrees, the anti-explosion cap 15, the edge covering face 2 and the upper cover 3 are connected in an enhanced mode through laser welding or ultrasonic welding, and edge covering connection is beneficial to saving manufacturing cost and sealing.

The middle part of upper cover 3 is equipped with ascending first arch 5, is equipped with first air vent 4 on the 5 inclined planes of first arch, and first arch 5 is used for and outside electrical part electricity federation, and first air vent 4 can prevent the overheated explosion of battery with the gaseous discharge in explosion-proof chamber 6.

The middle part of the explosion-proof cap 15 is provided with a downward second bulge 7, the second bulge 7 is initially provided with an arc shape, the second bulge 7 has larger deformation capacity, when the battery is overheated, gas generated by battery discharge enables the second bulge 7 to deform upwards, and the explosion-proof cap 15 and the connecting rod 16 are in point-open connection so as to realize power-off protection.

An explosion-proof cavity 6 is formed between the first bulge 5 and the second bulge 7, and the explosion-proof cavity 6 is used for accommodating the deformation of the second bulge 7.

The top of the connecting rod 16 is against the lower surface of the second protrusion 7, and the connecting rod 16 is in contact electrical connection with the second protrusion 7 under normal conditions.

The connecting disc 8 is provided with a plurality of second vent holes 12, so that gas generated by battery discharge can act on the second bulges 7 conveniently.

Bar shell fragment 13 has a plurality ofly along circumferencial direction evenly distributed, a plurality of bar shell fragments 13 have the effect of leading just to connecting rod 16, and make sealing washer 1 atress even, bar shell fragment 13 is equipped with the horizontal segment, slope section and vertical section, one section and the inner wall fixed connection of sealing washer 1 of horizontal segment of bar shell fragment 13, the vertical section of bar shell fragment 13 offsets with connecting rod 16's surface, vertical section offsets with connecting rod 16 and produces the effort, the slope end is favorable to connecting rod 16 to stretch into between the bar shell fragment 13.

The connecting disc 8, the V-shaped elastic sheet 11, the connecting rod 16, the explosion-proof cap 15 and the upper cover 3 are made of conductive materials and are conveniently and electrically communicated with the positive electrode of the battery body.

The working principle is as follows: when the cap for the low-capacity nickel-hydrogen battery is used, the cap is pressed with the battery body, the positive electrode of the battery body is electrically connected with the connecting disc 8, the strip-shaped elastic sheet 13 deforms to further press the sealing ring 1 with the battery body, the sealing performance of the battery is improved, in the using process, when the battery is overheated, gas generated by battery discharge rises and penetrates out of the second vent hole 12 to act on the second bulge 7, the second bulge 7 deforms upwards to be disconnected with the connecting rod 16 to realize power-off protection, when the gas and heat generated by discharge current are larger than critical values, the second bulge 7 deforms and breaks, so that the gas in the battery is discharged through the second vent hole 12, the explosion-proof cavity 6 and the first vent hole 4 to place the battery for explosion, and in the process of producing the cap for the low-capacity nickel-hydrogen battery, the V-shaped elastic sheet 11 has the tendency of outwards expanding, make connecting rod 16 have the trend of upward movement, this makes when there is certain error in the manufacturing process of block, connecting rod 16 also can conflict electric property UNICOM with second arch 7, and the spacing support 9 of L type limits the distance that shifts up of connecting rod 16, avoids the outage protection that the use second arch 7 formed to become invalid, has certain practicality.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides a low capacity is block for nickel-hydrogen battery, includes sealing washer (1), its characterized in that: the middle part of the sealing ring (1) is provided with a cavity (14) in a vertically through mode, an anti-explosion cap (15) is fixed between the inner walls of the sealing ring (1) and close to the upper end, an upper cover (3) is arranged above the anti-explosion cap (15), a wrapping surface (2) is arranged on the outer edge of the anti-explosion cap (15), the wrapping surface (2) is bent inwards to wrap the upper cover (3), a connecting disc (8) is fixedly connected between the inner walls of the sealing ring (1) and close to the bottom, a V-shaped elastic sheet (11) is fixedly connected to the upper surface of the connecting disc (8), a connecting rod (16) is fixedly connected to the other end of the V-shaped elastic sheet (11), a stop block (10) is fixedly connected to the position, close to the bottom, of the two sides of the connecting rod (16), an L-shaped limiting support (9) is fixedly connected to the upper surface of the connecting disc (8), and the horizontal section of the L-shaped limiting support (9) is positioned on the square of the stop block (10), and a strip-shaped elastic sheet (13) is arranged above the connecting disc (8).

2. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 1, characterized in that: the anti-explosion cap (15) and the edge covering surface (2) are integrally formed, the included angle between the edge covering surface (2) and the anti-explosion cap (15) before being bent is set to be 90-135 degrees, and the anti-explosion cap (15), the edge covering surface (2) and the upper cover (3) are connected in an enhanced mode through laser welding or ultrasonic welding.

3. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 1, characterized in that: the middle part of the upper cover (3) is provided with an upward first bulge (5), and a first vent hole (4) is formed in the inclined surface of the first bulge (5).

4. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 1, characterized in that: the middle part of the anti-explosion cap (15) is provided with a downward second bulge (7), the second bulge (7) is initially provided with an arc shape, and the second bulge (7) has large deformation capacity.

5. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 3, characterized in that: an explosion-proof cavity (6) is formed between the first bulge (5) and the second bulge (7).

6. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 1, characterized in that: the top of the connecting rod (16) is abutted against the lower surface of the second bulge (7).

7. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 1, characterized in that: and a plurality of second vent holes (12) are formed in the connecting disc (8).

8. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 1, characterized in that: the sealing ring is characterized in that the strip-shaped elastic pieces (13) are uniformly distributed in a plurality of numbers along the circumferential direction, the strip-shaped elastic pieces (13) are provided with horizontal sections, inclined sections and vertical sections, one section of the horizontal section of each strip-shaped elastic piece (13) is fixedly connected with the inner wall of the sealing ring (1), and the vertical sections of the strip-shaped elastic pieces (13) are abutted to the outer surface of the connecting rod (16).

9. A cap for a low-capacity nickel-metal hydride battery as claimed in claim 1, characterized in that: the connecting disc (8), the V-shaped elastic sheet (11), the connecting rod (16), the explosion-proof cap (15) and the upper cover (3) are made of conductive materials.