CN210668442U

CN210668442U - One-way valve type pole lithium battery cover

Info

Publication number: CN210668442U
Application number: CN201921931948.3U
Authority: CN
Inventors: 李建华
Original assignee: Shenzhen Jinxinyuan Technology Co Ltd
Current assignee: Shenzhen Jinxinyuan Technology Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-06-02
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a one-way valve type polar pole lithium battery cover, which comprises a cover body, a polar pole arranged on the cover body, a stepped round hole arranged inside the polar pole, a ceramic ball arranged inside the stepped round hole, a stainless steel spring arranged outside the ceramic ball, and a sealing screw arranged on the stainless steel spring and arranged at the top end inside the stepped round hole, wherein the outer side of the sealing screw is provided with a dustproof device for preventing external dust from entering the stepped round hole, the one-way valve type polar pole lithium battery cover effectively prevents the external dust and water vapor from entering the stepped round hole inside the polar pole through the dustproof device arranged outside the sealing screw, so that the stainless steel spring inside the stepped round hole can stably stretch out and draw back, the gas inside the battery can be effectively discharged, the safety performance of the battery can be further improved, and the dustproof device is of a detachable connection type relative to the polar pole, thereby facilitating the regular disassembly and replacement of the filter screen.

Description

One-way valve type pole lithium battery cover

Technical Field

The utility model relates to the technical field of batteries, specifically be one-way valve formula utmost point post lithium cell lid.

Background

The lithium ion battery has the characteristics of high voltage, large specific energy, long cycle life, good safety performance, small self-discharge, capability of being charged and discharged quickly and the like, so the lithium ion battery is widely applied to the fields of various electric automobiles, urban buses, power UPS, wind power energy storage and the like. However, a certain amount of gas may be generated in the formation, charge and discharge and storage stages of the lithium ion battery, and the generated gas remains in the battery to cause siltation, so that the internal pressure of the battery rises, and if the safety valve is not opened in time to remove the internal gas, the battery explosion may be caused to cause danger.

And according to the chinese patent application number: CN201611052718.0, a check valve type pole cover, in which a pole is mounted on a cover body of a battery, a step circular hole is formed in the pole, a ceramic ball, a stainless steel spring and a sealing screw are disposed inside the step circular hole, so as to form a check valve and ensure the safety of the battery, however, as can be seen from the above patent and the attached drawings, the sealing screw is correspondingly provided with a through hole communicating with the outside, although the through hole of the sealing screw can ensure that when the battery is pressurized up, the check valve is opened, and the gas is discharged to the outside from the through hole, when the internal pressure of the battery is low, the through hole of the sealing screw is still communicated with the outside, so that the impurities such as large particles and dust outside can easily enter the step circular hole inside the pole from the through hole, and when a certain amount of impurities such as dust is accumulated in the step circular hole, on the one hand, abrasion of the stainless steel spring during stretching is caused, the service life of the stainless steel spring is influenced, on the other hand, stretching of the stainless steel spring is hindered to a certain degree, and therefore the check valve cannot discharge gas, certain potential safety hazards exist, and therefore the check valve type pole lithium battery cover is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve formula utmost point post lithium cell lid to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: one-way valve formula utmost point post lithium cell lid, including the lid, install utmost point post on the lid, set up at the inside ladder round hole of utmost point post, set up at the inside ceramic ball of ladder round hole, install the stainless steel spring in the ceramic ball outside, set up at stainless steel spring and install the screw that seals on the inside top of ladder round hole, it is equipped with in the screw outside of sealing and prevents that external dust from getting into the inside dust keeper of ladder round hole, through the dust keeper who is equipped with to play carries out effectual protection to the screw outside of sealing.

Preferably, dust keeper is including setting up the dust keeper in the screw outside sealing, be equipped with the joint pole on the dust keeper, joint pole link joint has the connecting piece, the connecting piece is connected with the screw thread post threaded connection in the utmost point post outside, through the joint pole that is equipped with to make the connection that the dust keeper can be stable in the outside of utmost point post.

Preferably, the dustproof piece is including setting up the filter screen in the sealing screw outside, the filter screen is close to the waterproof ventilated membrane of one side fixedly connected with of sealing screw, the solid fixed ring of filter screen outside fixedly connected with, gu fixed ring and utmost point post top butt, a plurality of joint rod fixed connection is in solid fixed ring bottom, through the dustproof piece that is equipped with to play and carry out effectual dirt-proof effect to the sealing screw.

Preferably, the connecting piece includes the thread bush of threaded connection in the utmost point post outside, fixedly connected with go-between is sheathe in to the thread, the equidistance is equipped with a plurality of joint hole on the go-between, joint pole and joint hole joint are through the connecting piece that is equipped with to be convenient for carry out the quick effect of being connected of dismantling between filter screen and the utmost point post.

Preferably, a plurality of the clamping rods are made of elastic materials, so that stable connection between the clamping rods and the connecting ring is realized.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses when using, through the dust keeper that is equipped with in the outside of sealing the screw to effectual external dust and the steam of blockking get into the inside ladder round hole of utmost point post, make the inside stainless steel spring of ladder round hole carry out stable flexible, thereby make the inside gas of battery carry out effectual exhaust effect, thereby further improve the security performance that the battery used, and dust keeper for utmost point post for can dismantle the connected mode, and then the effect of the regular dismantlement of the filter screen of being convenient for and change.

Drawings

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

fig. 2 is a schematic view of the internal structure of the pole of the present invention;

fig. 3 is an enlarged view of the area a in fig. 2.

In the figure: 1-a cover body; 2-pole column; 3-step round hole; 4-ceramic balls; 5-stainless steel spring; 6-sealing screw; 7-a dust-proof device; 8, a dustproof piece; 9-a click rod; 10-a connector; 11-a filter screen; 12-waterproof breathable film; 13-a fixed ring; 14-a threaded sleeve; 15-connecting rings; 16-clamping hole.

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.

Referring to fig. 1-3, the present invention provides a technical solution: the one-way valve type polar column lithium battery cover comprises a cover body 1, a polar column 2 arranged on the cover body 1, a stepped round hole 3 arranged inside the polar column 2, a ceramic ball 4 arranged inside the stepped round hole 3, a stainless steel spring 5 arranged outside the ceramic ball 4, a sealing screw 6 arranged on the stainless steel spring 5 and arranged at the top end inside the stepped round hole 3, the outer side of the sealing screw 6 is provided with a dustproof device 7 for preventing external dust from entering the inner part of the stepped round hole 3, the dustproof device 7 comprises a dustproof piece 8 arranged on the outer side of the sealing screw 6, a clamping rod 9 is arranged on the dustproof piece 8, the bottom end of the clamping rod 9 is in a hook shape, therefore, the clamping rod 9 can be clamped in the clamping hole 16, and the clamping rods 9 are all made of elastic materials, so that the clamping rod 9 has a certain expansion amount;

the dustproof piece 8 comprises a filter screen 11 arranged on the outer side of the sealing screw 6, a plurality of filter holes are distributed in the filter screen 11, so that external dust and other large impurities are prevented from entering the stepped round hole 3, a waterproof breathable film 12 is fixedly connected to one side, close to the sealing screw 6, of the filter screen 11, meanwhile, the waterproof breathable film 12 has certain strength, and the waterproof breathable film 12 can prevent external water vapor from entering the stepped round hole 3 from the through hole of the sealing screw 6;

the outer side of the filter screen 11 is fixedly connected with a fixing ring 13, the fixing ring 13 is abutted against the top end of the pole 2, the further fixing ring 13 supports the filter screen 11 and keeps a relatively sealed state with the pole 2, and a plurality of clamping rods 9 are fixedly connected to the bottom end of the fixing ring 13; the connecting end of the clamping rod 9 is clamped with a connecting piece 10, the connecting piece 10 is in threaded connection with a threaded column on the outer side of the pole 2, the connecting piece 10 comprises a threaded sleeve 14 in threaded connection with the outer side of the pole 2, and the threaded sleeve 14 is detachably connected with the pole 2 through the threaded column on the outer side of the pole 2, so that the detachment and installation of a bolt on the pole 2 are not affected;

fixedly connected with go up the go-between 15 on the thread bush 14, equidistant a plurality of joint hole 16 that is equipped with on the go-between 15, joint pole 9 and the 16 joints in joint hole joint, when needs are regularly dismantled filter screen 11 and are washd or change, only need press the joint pole 9 bottom that 16 departments of a plurality of joint hole correspond on the go-between 15 respectively, make joint pole 9 bottom break away from joint hole 16, upwards stimulate solid fixed ring 13 simultaneously, can realize the effect to the quick dismantlement of filter screen 11.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. One-way valve formula utmost point post lithium cell lid, including lid (1), install utmost point post (2) on lid (1), set up in inside ladder round hole (3) of utmost point post (2), set up in inside ceramic ball (4) of ladder round hole (3), install stainless steel spring (5) in the ceramic ball (4) outside, set up at stainless steel spring (5) and install sealing screw (6) on ladder round hole (3) inside top, its characterized in that: the outer side of the sealing screw (6) is provided with a dustproof device (7) for preventing external dust from entering the ladder round hole (3).

2. The check valve type polar lithium battery cover according to claim 1, characterized in that: dustproof device (7) are including setting up dustproof (8) in the screw (6) outside of sealing, be equipped with joint pole (9) on dustproof (8), joint pole (9) link joint has connecting piece (10), connecting piece (10) and the screw thread post threaded connection in utmost point post (2) outside.

3. The check valve type polar lithium battery cover according to claim 2, characterized in that: dustproof member (8) are including setting up filter screen (11) in the screw (6) outside of sealing, filter screen (11) are close to one side fixedly connected with waterproof ventilated membrane (12) of screw (6) of sealing, the solid fixed ring of filter screen (11) outside fixedly connected with (13), gu fixed ring (13) and utmost point post (2) top butt, a plurality of joint pole (9) fixed connection is in solid fixed ring (13) bottom.

4. The check valve type polar lithium battery cover according to claim 2, characterized in that: connecting piece (10) are including threaded connection at thread bush (14) in utmost point post (2) outside, fixedly connected with go up threaded connection (15) in thread bush (14), go up the equidistance in go-between (15) and be equipped with a plurality of joint hole (16), joint pole (9) and joint hole (16) joint.

5. The check valve type polar lithium battery cover according to claim 2, characterized in that: the clamping rods (9) are all made of elastic materials.