CN213989138U

CN213989138U - Soft package lithium ion battery capable of supplementing electrolyte

Info

Publication number: CN213989138U
Application number: CN202023174467.8U
Authority: CN
Inventors: 张建; 曾怡
Original assignee: Tangshan Aerospace Wanyuan Technology Co ltd
Current assignee: Tangshan Aerospace Wanyuan Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-17
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a can supply soft packet of lithium ion battery of electrolyte, the air pocket comprises an air pocket, the inside of air pocket is provided with the sealing layer, the inside battery main part that is provided with of sealing layer, the inside of air pocket and the one side that is located the sealing layer set up the fluid infusion passageway, the fluid infusion passageway is connected with the inside cavity of battery main part, the one end of fluid infusion passageway is sealed setting, the fluid infusion passageway forms when the encapsulation is bled to the battery. The utility model discloses, after the battery uses a period, when needing to carry out the fluid infusion operation, will mend the liquid passageway and outwards expand, cut out the sealing of passageway one end, make inside and external intercommunication of battery, with the help of annotating the liquid utensil, with inside electrolyte is injected into the battery by the fluid infusion passageway, after the fluid infusion, seal the operation to the fluid infusion passageway under high vacuum environment to roll over the fluid infusion passageway to battery main part, in certain length within range, the fluid infusion passageway can cut repeatedly, realizes carrying out the fluid infusion operation many times.

Description

Soft package lithium ion battery capable of supplementing electrolyte

Technical Field

The utility model relates to a lithium ion battery technical field especially relates to a can supply soft packet of lithium ion battery of electrolyte.

Background

An ion battery is a secondary battery, generally, a material containing lithium element is used as an electrode, and mainly works by moving lithium ions between a positive electrode and a negative electrode.

However, in the long-term use process of the liquid lithium ion battery, a large number of side reactions exist in the battery, which can cause the consumption and decomposition of the electrolyte, thereby affecting the capacity, rate capability, cycle life and the like of the battery, so if the liquid lithium ion battery can be supplemented with the electrolyte after being used for a period of time, the performance and service life of the battery are greatly improved, and the soft package liquid lithium ion battery in the existing design cannot be supplemented with the electrolyte after being used for a period of time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a soft package lithium ion battery capable of supplementing electrolyte.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a can supply soft packet of lithium ion battery of electrolyte, includes the air pocket, the inside of air pocket is provided with the sealing layer, the inside battery subject that is provided with of sealing layer, the inside of air pocket just is located one side of sealing layer and sets up the fluid infusion passageway.

As a further description of the above technical solution:

the liquid supplementing channel is connected with a cavity in the battery main body.

As a further description of the above technical solution:

one end of the liquid supplementing channel is arranged in a sealing mode.

As a further description of the above technical solution:

the liquid supplementing channel is formed during air exhaust and packaging of the battery.

The utility model discloses following beneficial effect has:

1. compared with the prior art, this can supply soft packet of lithium ion battery of electrolyte, in the battery use, the one end that the battery main part was kept away from to the fluid infusion passageway is sealed, the fluid infusion passageway is in the not state of starting, the battery is inside isolated with external, guarantee the battery and normally function, the battery uses after a period, when needing to carry out the fluid infusion operation, outwards expand the fluid infusion passageway, cut off the seal of passageway one end, make inside and external intercommunication of battery, with the help of annotating the liquid utensil, with inside electrolyte is injected into the battery by the fluid infusion passageway, after the fluid infusion, seal the operation to the fluid infusion passageway under high vacuum environment, and roll over the fluid infusion passageway to the battery main part, in certain length within range, the fluid infusion passageway can cut repeatedly, realize carrying out the fluid infusion operation many times.

Drawings

Fig. 1 is a schematic diagram of a soft-package lithium ion battery capable of supplementing electrolyte before air-exhaust packaging, according to the present invention;

fig. 2 is a schematic diagram of a soft-package lithium ion battery after air-extracting and packaging, which is provided by the present invention and can supplement electrolyte;

fig. 3 is a schematic diagram of a finished soft package lithium ion battery capable of supplementing electrolyte according to the present invention;

fig. 4 is traditional soft packet of lithium ion battery (left) and the utility model discloses soft packet of lithium ion battery (right) outward appearance contrast schematic diagram.

Illustration of the drawings:

1. an air bag; 2. a sealing layer; 3. a fluid infusion channel; 4. a battery body.

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. 1-4, the utility model provides a pair of can supply soft packet of lithium ion battery of electrolyte: including air pocket 1, the inside of air pocket 1 is provided with sealing layer 2, and the inside battery body 4 that is provided with of sealing layer 2, the inside of sealing layer 2 and the top side that is located power main body 2 set up fluid infusion passageway 3, conveniently carry out the fluid infusion operation.

Fluid infusion passageway 3 is connected with the inside cavity of battery main part 4, conveniently lets in electrolyte, and the one end of fluid infusion passageway 3 is sealed setting, and electrolyte is revealed when preventing not using, and fluid infusion passageway 3 forms when the battery encapsulation of bleeding.

The working principle is as follows: when the battery main body 4 is exhausted and packaged, the side seal is a right-angle-shaped seal, a part of unsealed area is reserved between the side seal and the top seal of the battery main body 4, the liquid supplementing channel 3 is formed by matching the side seal, the top seal and the unsealed area between the side seal and the top seal, when the battery main body 4 needs to be supplemented with liquid, the battery main body 4 is placed in an environment with qualified water and oxygen content, the liquid supplementing channel 3 is unfolded outwards, the seal at one end of the liquid supplementing channel 3 is cut off, the interior of the battery main body 4 is communicated with the outside, the electrolyte is injected into the battery main body 4 from the liquid supplementing channel 3 by a liquid injection device, the battery main body 4 is kept still for a period of time under the environment, the liquid supplementing channel 3 under high vacuum degree is sealed after the supplemented electrolyte is fully soaked, the liquid supplementing channel 3 can be folded towards the battery main body 4 after the seal is finished, the channel can be attached to the surface of the battery main body 4 by double faced adhesive and the like, can design this fluid infusion passageway 3 in the one corner at battery body 4 top, the encapsulation shaping back can be folded this fluid infusion passageway 3 to battery body 4, and the direction of the length, width and the thickness of battery body 4 can not increase the size, and the design of fluid infusion passageway 3 length can be adjusted at certain extent, and the passageway of different lengths can satisfy the fluid infusion operation once to many times.

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 scope of the invention.

Claims

1. The utility model provides a can replenish soft packet of lithium ion battery of electrolyte, includes air pocket (1), its characterized in that: the gas bag is characterized in that a sealing layer (2) is arranged in the gas bag (1), a battery body (4) is arranged in the sealing layer (2), and a liquid supplementing channel (3) is arranged in the sealing layer (2) above the battery body (4).

2. The soft package lithium ion battery capable of supplementing electrolyte according to claim 1, characterized in that: the liquid supplementing channel (3) is connected with the inner cavity of the battery main body (4).

3. The soft package lithium ion battery capable of supplementing electrolyte according to claim 1, characterized in that: one end of the liquid supplementing channel (3) is arranged in a sealing mode.

4. The soft package lithium ion battery capable of supplementing electrolyte according to claim 1, characterized in that: the liquid supplementing channel (3) is formed during air exhaust and packaging of the battery.