CN215578976U

CN215578976U - Cylindrical flexible package lithium titanate battery

Info

Publication number: CN215578976U
Application number: CN202121779405.1U
Authority: CN
Inventors: 徐源
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-01-18
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a cylindrical flexible package lithium titanate battery, which relates to the technical field of batteries and comprises a cylindrical battery shell, wherein an electrode layer is arranged inside the battery shell, a positive terminal and a negative terminal are inserted inside the battery shell, a protective layer is arranged outside the battery shell, a sealing sleeve is clamped at the upper end of the battery shell, a protective cover is inserted inside a slot, and a bottom cover is arranged inside the through slot. This cylindrical flexible package lithium titanate battery through the setting of protective cover and bottom, prevents that outside humid environment from reacting to the battery positive plate and the battery negative plate of inside, leads to rustting, has reached and to have carried out damp-proofing purpose when not using, has improved the life of battery, the setting of inoxidizing coating and seal cover has reached the protective capacities that improves the battery and has prevented that lithium titanate from revealing the polluted environment.

Description

Cylindrical flexible package lithium titanate battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a cylindrical flexible-package lithium titanate battery.

Background

Battery (Battery) refers to a device that converts chemical energy into electrical energy in a cup, tank, or other container or portion of a composite container that holds an electrolyte solution and metal electrodes to generate an electric current. Has a positive electrode and a negative electrode. With the advancement of technology, batteries generally refer to small devices that can generate electrical energy. Such as a solar cell. The performance parameters of the battery are mainly electromotive force, capacity, specific energy and resistance. The battery is used as an energy source, can obtain current which has stable voltage and current, is stably supplied for a long time and is slightly influenced by the outside, has simple structure, convenient carrying, simple and easy charging and discharging operation, is not influenced by the outside climate and temperature, has stable and reliable performance, and plays a great role in various aspects of modern social life. The lithium titanate battery is used as a negative electrode material of a lithium ion battery, namely lithium titanate, and can be combined with lithium manganate, ternary materials or lithium iron phosphate and other positive electrode materials to form a 2.4V or 1.9V lithium ion secondary battery. In addition, it can be used as a positive electrode, and constitutes a 1.5V lithium secondary battery with a metallic lithium or lithium alloy negative electrode. Due to the characteristics of high safety, high stability, long service life and environmental protection of the lithium titanate. Lithium Titanate (LTO) material is used as a negative electrode material in a battery, and due to the characteristics of the LTO material, the material and electrolyte are easy to interact and generate gas separation in the charging and discharging cyclic reaction process, so that the common lithium titanate battery is easy to expand, the battery core is easy to bulge, the electrical property is greatly reduced, and the theoretical cycle life of the lithium titanate battery is greatly shortened. Test data show that the general lithium titanate battery can generate the phenomenon of flatulence after about 1500-2000 cycles, so that the lithium titanate battery can not be normally used, and the phenomenon is also an important reason for restricting the large-scale application of the lithium titanate battery.

The existing lithium titanate battery has the following defects: firstly, when using in humid environment for a long time, the electrode of battery end can aggravate oxidation reaction's emergence, leads to phenomenon such as rust, influences the use of battery, and two, lithium titanate battery's outside generally adopts the sheetmetal packing, receives the easy roughly battery deformation or inside material when colliding or the extrusion and reveals, not only can lead to the damage of battery, and the material is revealed and can be caused great harm to the environment when serious.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a cylindrical flexible package lithium titanate battery, which solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a cylindrical flexible package lithium titanate battery, includes battery case, battery case is cylindrical, the inside electrode layer that is provided with of battery case, the inside of electrode layer is provided with lithium titanate, it has positive terminal and negative terminal to peg graft in battery case's inside, the positive plate of upper end fixedly connected with battery of positive terminal, the negative terminal's of bottom fixedly connected with battery negative plate, battery case's outside is provided with the inoxidizing coating, battery case's upper end joint has the seal cover, the slot has been seted up to the upper end of seal cover, the inside of slot is pegged graft and is had the protective cover, logical groove has been seted up to the bottom of inoxidizing coating, the inside that leads to the groove is provided with the bottom.

Optionally, the number of the electrode layers is two, namely a positive electrode layer and a negative electrode layer, and the distance between the electrode layers and the inner wall of the battery shell is 5 mm.

Optionally, the material of inoxidizing coating is rubber, the upper end of inoxidizing coating and battery case's upper end parallel and level, the thickness of inoxidizing coating is 2 mm.

Optionally, the middle of the upper surface of the battery shell is a groove, a first annular clamping groove is formed in the inner wall of the groove, and the inner wall of the first annular clamping groove is arranged in an arc surface mode.

Optionally, the sealing sleeve is cylindrical, a first flange is arranged on the outer wall of the sealing sleeve, and the first flange is matched with the first annular clamping groove.

Optionally, a second annular clamping groove is formed in the inner wall of the slot, an annular clamping block is fixedly connected to the bottom of the protective cover, a second flange is arranged outside the annular clamping block, and the second flange is connected with the second annular clamping groove in a clamped mode.

(III) advantageous effects

The utility model provides a cylindrical flexible package lithium titanate battery which has the following beneficial effects:

1. this cylindrical flexible package lithium titanate battery, through the setting of protective cover and bottom, can protect the positive plate of battery through the protective cover when using, the bottom can protect the battery negative plate, prevents that outside humid environment from reacting to the positive plate of battery and the battery negative plate of inside, leads to rustting, has reached and can carry out damp-proofing purpose when not using, has improved the life of battery.

2. This cylindrical flexible package lithium titanate battery, the setting of inoxidizing coating and seal cover protects battery subject's outside through the inoxidizing coating when using, prevents that the outside from receiving the extrusion and leading to the battery to warp, protects the tip of battery through the seal cover, prevents that the inside lithium titanate of battery can reveal after the extrusion, has reached the protective capacities that improves the battery and has prevented that lithium titanate from revealing the polluted environment.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of portion B of FIG. 1 in accordance with the present invention;

FIG. 4 is a three-dimensional view of the present invention;

FIG. 5 is an enlarged view of portion C of FIG. 4 according to the present invention.

In the figure: 1. a battery case; 2. an electrode layer; 3. lithium titanate; 4. a positive terminal; 5. a negative terminal; 6. a battery positive plate; 7. a battery negative plate; 8. a protective layer; 9. sealing sleeves; 10. a protective cover; 11. A bottom cover; 12. and an annular clamping block.

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.

Referring to fig. 1 to 5, the present invention provides a technical solution: a cylindrical flexible package lithium titanate battery comprises a battery shell 1, the battery shell 1 is cylindrical, an electrode layer 2 is arranged inside the battery shell 1, the number of the electrode layer 2 is two layers, namely an anode electrode layer and a cathode electrode layer, the distance between the electrode layer 2 and the inner wall of the battery shell 1 is 5mm, lithium titanate 3 is arranged inside the electrode layer 2, an anode terminal 4 and a cathode terminal 5 are inserted inside the battery shell 1, the upper end of the anode terminal 4 is fixedly connected with a battery anode plate 6, the bottom of the cathode terminal 5 is fixedly connected with a battery cathode plate 7, a protective layer 8 is arranged outside the battery shell 1, the protective layer 8 is made of rubber, the upper end of the protective layer 8 is flush with the upper end of the battery shell 1, the thickness of the protective layer 8 is 2mm, the middle part of the upper surface of the battery shell 1 is a groove, and the inner wall of the groove is provided with a first annular clamping groove, first ring groove's inner wall is the cambered surface setting, battery case 1's upper end joint has seal cover 9, the slot has been seted up to the upper end of seal cover 9, seal cover 9 is cylindrical setting, seal cover 9's outer wall is provided with first flange, first flange and first ring groove looks adaptation, the inside grafting of slot has protective cover 10, protective cover 10's cylindrical lid, second ring groove has been seted up to the inner wall of slot, protective cover 10 bottom fixedly connected with annular fixture block 12, the outside of annular fixture block 12 is provided with the second flange, second flange and second ring groove joint, logical groove has been seted up to the bottom of inoxidizing coating 8, the inside that leads to the groove is provided with bottom 11.

During the use, when the battery receives striking or when extrudeing, cushion through battery case 1 outside inoxidizing coating 8 and protect, damage battery case 1 when preventing to extrude or the striking dynamics is great, seal cover 9 strikes to lithium titanate 3 when preventing to extrude, lead to lithium titanate 3 to flow from the positive plate 6 of battery and cause environmental pollution, insert the inside of slot with protective cover 10 when the battery does not use, insert the inside in logical groove with bottom 11, protect positive plate 6 of battery and battery negative pole piece 7, prevent to rust in humid environment, take off bottom 11 and protective cover 10 when using, use again.

The working principle and the beneficial effects of the utility model are as follows: this cylindrical flexible package lithium titanate battery, through protective cover 10 and bottom 11's setting, can protect battery positive plate 6 through protective cover 10 when using, bottom 11 can protect battery negative plate 7, prevents that outside humid environment from reacting to inside battery positive plate 6 and battery negative plate 7, leads to rustting, has reached and to have carried out damp-proofing purpose when not using, has improved the life of battery, the setting of inoxidizing coating 8 and seal cover 9 protects battery case 1's outside through inoxidizing coating 8 when using, prevents that the outside from receiving the extrusion and leading to the battery to warp, protects the tip of battery through seal cover 9, prevents that the inside lithium titanate 3 of battery after the extrusion can reveal, has reached the protective capacities who improves the battery and has prevented that lithium titanate 3 from revealing the polluted environment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a cylindrical flexible package lithium titanate battery, includes battery case (1), its characterized in that: battery case (1) is cylindrical, battery case (1) inside is provided with electrode layer (2), the inside of electrode layer (2) is provided with lithium titanate (3), it has positive terminal (4) and negative terminal (5) to peg graft in the inside of battery case (1), the upper end fixedly connected with battery positive plate (6) of positive terminal (4), the bottom fixedly connected with battery negative pole piece (7) of negative terminal (5), the outside of battery case (1) is provided with inoxidizing coating (8), the upper end joint of battery case (1) has seal cover (9), the slot has been seted up to the upper end of seal cover (9), the inside of slot is pegged graft and is had protective cover (10), logical groove has been seted up to the bottom of inoxidizing coating (8), the inside that leads to the groove is provided with bottom (11).

2. The cylindrical lithium titanate battery with flexible package as claimed in claim 1, wherein: the number of electrode layer (2) is provided with two-layerly, is anodal electrode layer and negative electrode layer respectively, the distance between electrode layer (2) and battery case (1) inner wall is 5 mm.

3. The cylindrical lithium titanate battery with flexible package as claimed in claim 1, wherein: the material of inoxidizing coating (8) is rubber, the upper end parallel and level of upper end and battery case (1) of inoxidizing coating (8), the thickness of inoxidizing coating (8) is 2 mm.

4. The cylindrical lithium titanate battery with flexible package as claimed in claim 1, wherein: the middle of the upper surface of the battery shell (1) is a groove, a first annular clamping groove is formed in the inner wall of the groove, and the inner wall of the first annular clamping groove is arranged in a cambered surface mode.

5. The cylindrical lithium titanate battery with flexible package as claimed in claim 4, wherein: the sealing sleeve (9) is cylindrical, a first flange is arranged on the outer wall of the sealing sleeve (9), and the first flange is matched with the first annular clamping groove.

6. The cylindrical lithium titanate battery with flexible package as claimed in claim 1, wherein: the cylindrical lid of protective cover (10), the second annular draw-in groove has been seted up to the inner wall of slot, protective cover (10) bottom fixedly connected with annular fixture block (12), the outside of annular fixture block (12) is provided with the second flange, second flange and second annular draw-in groove joint.