CN211700464U

CN211700464U - Waterproof lithium battery

Info

Publication number: CN211700464U
Application number: CN201922356722.1U
Authority: CN
Inventors: 鄢启洪
Original assignee: Shenzhen Huagreen Technology Co ltd
Current assignee: Shenzhen Huagreen Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-16
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to the field of batteries, in particular to a waterproof lithium battery, which comprises a shell and a battery body arranged in the shell, wherein the battery body is electrically connected with a protection plate, the shell is provided with an opening, a waterproof component is arranged in the opening, the waterproof component comprises a first contact electrically connected with the protection plate and a second contact electrically connected with an external circuit, the upper surface of the first contact is provided with a boss, the upper surface of the boss is spliced with the second contact, the waterproof component also comprises a water-swelling body sleeved on the boss and an elastic rubber ring sleeved on the second contact, the elastic rubber ring arranged on the upper part of the opening of the shell can ensure that the battery has preliminary waterproof capability, when moisture enters the opening after long-time erosion, the moisture can be absorbed by the water-swelling body, and further prevents the moisture from entering the shell, and the water-absorbing expansion body expands after absorbing water, and the power supply of the battery is cut off.

Description

Waterproof lithium battery

Technical Field

The utility model relates to a battery field, concretely relates to waterproof lithium cell.

Background

Various portable electronic devices have become one of the necessities of modern life, and as products are advanced and widely used, the waterproof requirement is gradually increased, however, the battery of many electronic products is wrapped by a shell, but the opening at the electrode leading-out position is difficult to avoid a gap, so that the battery can cause damage of internal components or short circuit of an electric contact because of moisture permeation into the body, and the electrical characteristics of the battery can be influenced even after the moisture is dried. In addition, in large electronic products with complicated and precise mechanisms, such as notebook computers, most of the housings have no waterproof function, and when the products are splashed with water or soaked in water, the computers and batteries may be damaged, and even the batteries may be burned to threaten the personal safety.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at overcoming the defect among the prior art, providing a waterproof lithium cell, can prevent that moisture from getting into inside the battery, and can realize meeting the water back outage function, can reuse after the dry dehydration.

The utility model discloses a waterproof lithium battery, include the casing and arrange in battery body in the casing, battery body electricity is connected with the protection shield, the opening has been seted up to the casing, be equipped with waterproof assembly in the opening, waterproof assembly include with the first contact of protection shield electricity connection and be used for the second contact of being connected with the external circuit electricity, first contact upper surface is provided with the boss, the boss upper surface with the second contact is pegged graft, waterproof assembly still locates including the cover the water expansion body and the cover of boss are located the elasticity rubber ring of second contact.

Furthermore, the cross section of the second contact is of an inverted T-shaped structure, the elastic rubber ring is sleeved in the vertical part of the second contact, and a first convex part is arranged on the inner side of the upper end of the opening of the shell and used for clamping and fixing the second contact and the elastic rubber ring.

Furthermore, the water-absorbing expansion body is made of water-absorbing resin.

Further, the cross section of the first contact is of a T-shaped structure, and a second convex part is arranged on the inner side of the lower end of the opening of the shell and used for clamping and fixing the first contact.

Furthermore, the elastic rubber ring is attached to the first convex part by adopting a bonding agent.

The utility model has the advantages that: the utility model discloses a waterproof lithium battery can make the battery possess preliminary waterproof ability through locating the elastic rubber ring on casing opening upper portion, and inside moisture got into the opening part after long-time erosion, can be absorbed by the water swelling body, further avoid inside the moisture gets into the casing, and the water swelling body expands after absorbing water, and the power supply of disconnection battery makes personnel inspect the battery, avoids further water.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but 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.

As shown in fig. 1, the waterproof lithium battery in this embodiment includes a case 1 and a battery body 2 disposed in the case 1, the battery body 2 is electrically connected to a protection board 201, the case 1 is provided with an opening 3, a waterproof assembly is disposed in the opening 3, the waterproof assembly includes a first contact 401 electrically connected to the protection board 201 and a second contact 402 electrically connected to an external circuit, a boss 403 is disposed on an upper surface of the first contact 401, an upper surface of the boss 403 is inserted into the second contact 402, the waterproof assembly further includes a water-absorbing expansion body 404 sleeved on the boss 403 and an elastic rubber ring 405 sleeved on the second contact 402, when in normal use, the protection board 201 electrically connected to the battery body 2 can perform conventional protection such as overcurrent and overheat protection on the battery, and when the protection board 201 is disposed in the case 1, the protection board 201 and the battery body 2 can be protected by waterproof, the battery damage caused by the short circuit of the protection board 201 is avoided; from the bottom up, protection board 201, first contact 401, boss 403 and second contact 402 turn on connection in proper order in external circuit, meet water back elasticity rubber ring 405 can regard as first heavy water protection, avoid inside a large amount of moisture gets into casing 1, if soak for a long time, a small amount of moisture probably still can get into casing 1 opening 3 department, the body 404 that absorbs water this moment can regard as the second protection again, absorb moisture, the simultaneous occurrence inflation, the material that the optional great expansion coefficient of the body 404 that absorbs water expanded makes second contact 402 break away from the outage completely with boss 403 during the implementation, elasticity rubber ring 405 volume is compressed, avoid the too big emergence damage of opening 3 internal stress.

In this embodiment, the cross section of the second contact 402 is an inverted T-shaped structure, the elastic rubber ring 405 is sleeved on the vertical portion of the second contact 402, and the inner side of the upper end of the opening 3 of the housing 1 is provided with a first protrusion 101 for clamping and fixing the second contact 402 and the elastic rubber ring 405.

In this embodiment, the water-absorbent swelling body 404 is made of water-absorbent resin, and the water-absorbent resin can be recovered by dehydration after swelling, so that the boss 403 and the second contact 402 can be in contact with each other again, and the battery can be reused.

In this embodiment, the cross section of the first contact 401 is a T-shaped structure, and the inner side of the lower end of the opening 3 of the housing 1 is provided with a second protrusion 102 for fastening the first contact 401, and meanwhile, the water-absorbing expansion body 404 is used for being stressed when expanding, so as to prevent the pressure caused by the expansion from directly acting on the battery body 2.

In this embodiment, the elastic rubber ring 405 and the first protrusion 101 are bonded by using an adhesive.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A waterproof lithium battery is characterized in that: including the casing and arranging in battery body in the casing, battery body electricity is connected with the protection shield, the opening has been seted up to the casing, be equipped with waterproof assembly in the opening, waterproof assembly include with the first contact of protection shield electricity connection and be used for the second contact of being connected with external circuit electricity, the first contact upper surface is provided with the boss, the boss upper surface with the second contact is pegged graft, waterproof assembly still locates including the cover the water swelling body and the cover of boss are located the elastic rubber ring of second contact.

2. The lithium-ion battery of claim 1, wherein: the cross section of the second contact is of an inverted T-shaped structure, the elastic rubber ring is sleeved in the vertical part of the second contact, and a first convex part is arranged on the inner side of the upper end of the opening of the shell and used for clamping and fixing the second contact and the elastic rubber ring.

3. The lithium-ion battery of claim 1, wherein: the water-absorbing expansion body is made of water-absorbing resin.

4. The lithium-ion battery of claim 1, wherein: the cross section of the first contact is of a T-shaped structure, and the inner side of the lower end of the opening of the shell is provided with a second convex part used for clamping and fixing the first contact.

5. The lithium-ion battery of claim 2, wherein: the elastic rubber ring is attached to the first convex part by adopting a bonding agent.