CN215342732U

CN215342732U - Lithium battery with good corrosion resistance effect

Info

Publication number: CN215342732U
Application number: CN202121249400.8U
Authority: CN
Inventors: 李旭航
Original assignee: Fujian Eu Qian New Energy Technology Co ltd
Current assignee: Fujian Eu Qian New Energy Technology Co ltd
Priority date: 2021-06-05
Filing date: 2021-06-05
Publication date: 2021-12-28
Anticipated expiration: 2031-06-05

Abstract

The utility model discloses a lithium battery with a good corrosion resistance effect, which comprises a lithium battery body, wherein the lithium battery body comprises a shell, a positive electrode and a negative electrode, a first functional layer is arranged on the inner surface of the shell, the first functional layer comprises an acetal resin layer and an aluminum lithium alloy layer, a second functional layer is arranged on the outer surface of the shell, and the second functional layer comprises a tantalum alloy layer and a silver copper alloy layer. The lithium battery has the advantages that the acetal resin layer is arranged, the lithium battery has excellent waterproof performance and insulating performance, the aluminum-lithium alloy layer has high strength and good corrosion resistance and fatigue resistance, the tantalum alloy layer has excellent corrosion resistance, the outer surface of the shell is prevented from being corroded, and the silver-copper alloy layer has high strength and wear resistance, so that the problem that the existing lithium battery is easy to damage due to poor corrosion resistance of the protective shell in the using process and the lithium battery is easy to damage due to the poor corrosion resistance of the protective shell is solved.

Description

Lithium battery with good corrosion resistance effect

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery with a good corrosion resistance effect.

Background

The lithium battery is a primary battery which takes lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, is different from a rechargeable battery lithium ion battery and a lithium ion polymer battery, and has very high requirements on the environment due to the very active chemical characteristics of the lithium metal, so that the lithium metal is easy to damage due to the fact that a protective shell of the conventional lithium battery is poor in corrosion resistance in the using process, and the lithium battery is easy to damage.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

Aiming at the defects of the prior art, the utility model provides the lithium battery with good corrosion resistance effect, which has the advantage of good corrosion resistance effect and solves the problem that the lithium battery is easy to damage because the protective shell has poor corrosion resistance in the use process of the conventional lithium battery, so that the lithium battery is easy to damage.

Technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a lithium cell that corrosion-resistant effect is good, includes lithium cell body, lithium cell body includes casing, positive electrode and negative electrode, the internal surface of casing is provided with first functional layer, first functional layer includes acetal resin layer and aluminium lithium alloy layer, the surface of casing is provided with the second functional layer, the second functional layer includes tantalum alloy layer and silver-copper alloy layer.

Preferably, the positive electrode is arranged on the left side of the top of the shell, and the negative electrode is arranged on the right side of the top of the shell.

Preferably, the acetal resin layer is coated on an inner surface of the case, and the aluminum lithium alloy layer is provided on the inner surface of the acetal resin layer.

Preferably, the tantalum alloy layer is disposed on an outer surface of the case, and the silver-copper alloy layer is disposed on an outer surface of the tantalum alloy layer.

Preferably, the acetal resin layer and the aluminum lithium alloy layer have the same thickness, and the tantalum alloy layer and the silver copper alloy layer have the same thickness.

Advantageous effects

Compared with the prior art, the utility model provides the lithium battery with good corrosion resistance effect, which has the following beneficial effects:

the lithium battery has the advantages that the acetal resin layer is arranged, the lithium battery has excellent waterproof performance and insulating performance, the aluminum-lithium alloy layer has high strength and good corrosion resistance and fatigue resistance, the tantalum alloy layer has excellent corrosion resistance, the outer surface of the shell is prevented from being corroded, and the silver-copper alloy layer has high strength and wear resistance, so that the problem that the existing lithium battery is easy to damage due to poor corrosion resistance of the protective shell in the using process and the lithium battery is easy to damage due to the poor corrosion resistance of the protective shell is solved.

Drawings

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

FIG. 2 is a schematic structural diagram of a first functional layer according to the present invention;

FIG. 3 is a schematic cross-sectional view of a first functional layer according to the present invention;

fig. 4 is a schematic cross-sectional structure diagram of the second functional layer according to the present invention.

In the figure: 1. a lithium battery body; 11. a housing; 12. a positive electrode; 13. a negative electrode; 2. a first functional layer; 21. an acetal resin layer; 22. an aluminum lithium alloy layer; 3. a second functional layer; 31. a tantalum alloy layer; 32. a silver-copper alloy layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", 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 describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The lithium battery body 1, the case 11, the positive electrode 12, the negative electrode 13, the first functional layer 2, the acetal resin layer 21, the aluminum lithium alloy layer 22, the second functional layer 3, the tantalum alloy layer 31 and the silver copper alloy layer 32 of the present invention are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through conventional experimental methods.

Referring to fig. 1 to 4, a lithium battery with good corrosion resistance effect includes a lithium battery body 1, the lithium battery body 1 includes a case 11, a positive electrode 12 and a negative electrode 13, the positive electrode 12 is disposed on the left side of the top of the case 11, the negative electrode 13 is disposed on the right side of the top of the case 11, a first functional layer 2 is disposed on the inner surface of the case 11, the first functional layer 2 includes an acetal resin layer 21 and an aluminum lithium alloy layer 22, the acetal resin layer 21 is coated on the inner surface of the case 11, the aluminum lithium alloy layer 22 is disposed on the inner surface of the acetal resin layer 21, and has excellent waterproof and insulating properties by disposing the acetal resin layer 21, and has higher strength, better corrosion resistance and fatigue resistance by disposing the aluminum lithium alloy layer 22, a second functional layer 3 is disposed on the outer surface of the case 11, and the second functional layer 3 includes a tantalum alloy layer 31 and a silver-copper alloy layer 32, the tantalum alloy layer 31 is disposed on the outer surface of the housing 11, the silver-copper alloy layer 32 is disposed on the outer surface of the tantalum alloy layer 31, the tantalum alloy layer 31 has excellent corrosion resistance, and prevents the outer surface of the housing 11 from being corroded, the silver-copper alloy layer 32 has high strength and wear resistance, the acetal resin layer 21 and the aluminum-lithium alloy layer 22 have the same thickness, and the tantalum alloy layer 31 and the silver-copper alloy layer 32 have the same thickness.

When the lithium battery is used, the acetal resin layer 21 is arranged, excellent waterproof performance and insulating performance are achieved, the aluminum lithium alloy layer 22 is arranged, high strength, good corrosion resistance and fatigue resistance are achieved, the tantalum alloy layer 31 is arranged, excellent corrosion resistance is achieved, the outer surface of the shell 11 is prevented from being corroded, the silver copper alloy layer 32 is arranged, high strength and wear resistance are achieved, and the problem that the existing lithium battery is easy to damage due to the fact that the protective shell is poor in corrosion resistance in the using process, and therefore the lithium battery is prone to damage is solved.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium cell that corrosion-resistant effect is good, includes lithium cell body (1), its characterized in that: the lithium battery body (1) comprises a shell (11), a positive electrode (12) and a negative electrode (13), wherein a first functional layer (2) is arranged on the inner surface of the shell (11), the first functional layer (2) comprises an acetal resin layer (21) and an aluminum lithium alloy layer (22), a second functional layer (3) is arranged on the outer surface of the shell (11), and the second functional layer (3) comprises a tantalum alloy layer (31) and a silver copper alloy layer (32).

2. The lithium battery with good corrosion resistance of claim 1, wherein: the positive electrode (12) is arranged on the left side of the top of the shell (11), and the negative electrode (13) is arranged on the right side of the top of the shell (11).

3. The lithium battery with good corrosion resistance of claim 1, wherein: the acetal resin layer (21) is coated on the inner surface of the shell (11), and the aluminum lithium alloy layer (22) is arranged on the inner surface of the acetal resin layer (21).

4. The lithium battery with good corrosion resistance of claim 1, wherein: the tantalum alloy layer (31) is arranged on the outer surface of the shell (11), and the silver-copper alloy layer (32) is arranged on the outer surface of the tantalum alloy layer (31).

5. The lithium battery with good corrosion resistance of claim 1, wherein: the acetal resin layer (21) and the aluminum lithium alloy layer (22) have the same thickness, and the tantalum alloy layer (31) and the silver copper alloy layer (32) have the same thickness.