CN216015547U

CN216015547U - High-safety lithium ion battery cell

Info

Publication number: CN216015547U
Application number: CN202121671242.5U
Authority: CN
Inventors: 周仁超; 蒋学科
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-03-11
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a high-safety lithium ion battery cell, which comprises a protective shell and a top cover, wherein a plurality of second springs are fixedly arranged at the bottom of an inner cavity of the protective shell, a supporting plate is fixedly arranged at the top of each second spring, a battery cell body is arranged at the top of the supporting plate, a plurality of first springs are fixedly arranged at the bottom of the top cover, an upper cover is fixedly connected to the bottom of each first spring, a connecting wire is arranged on the right side of the battery cell body, a connecting hole is formed in the right side of the protective shell, and upper connecting blocks are fixedly arranged on the left side and the right side of the top cover. The lithium ion battery cell comprises a protective shell, a heat-resistant insulating pad, a main body layer, a reinforcing layer, an anti-corrosion coating, a top cover, a bolt, a lower connecting block, an upper connecting block, a nut, a limiting block, a first spring, an upper cover, a connecting hole, a connecting wire, a cell body, a second spring and a supporting plate.

Description

High-safety lithium ion battery cell

Technical Field

The utility model relates to the technical field of lithium ion batteries, in particular to a high-safety lithium ion battery.

Background

The lithium ion battery has the advantages of high energy density, high average output voltage, small self-discharge, no memory effect, excellent cycle performance, quick charge and discharge, charging efficiency of up to 100 percent, high output power, long service life, no toxic and harmful substances, and is called as a green battery, but the existing lithium ion battery has poor protection effect, is easy to be damaged by vibration, is easy to burn and explode after being damaged, and therefore, the high-safety lithium ion battery is provided.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

Aiming at the defects of the prior art, the utility model provides a high-safety lithium ion battery cell which has the advantage of good protection effect and solves the problems that the existing lithium ion battery cell has poor protection effect, is easy to be damaged by vibration and is easy to burn and explode after being damaged.

Technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high security lithium ion cell, includes protecting crust and top cap, the bottom fixed mounting of protecting crust inner chamber has a plurality of second spring, the top fixed mounting of second spring has the layer board, the top of layer board is provided with electric core body, the bottom fixed mounting of top cap has the first spring of a plurality of, the bottom fixedly connected with upper cover of first spring, the right side of electric core body is provided with the connecting wire, the right side of protecting crust is provided with the connecting hole, the equal fixed mounting in the left and right sides of top cap has last connecting block, the equal fixed mounting in the left and right sides of protecting crust has lower connecting block, the inner chamber of going up the connecting block is provided with the bolt, the lower extreme on bolt surface is provided with the nut, the protecting crust includes heat-resisting insulating pad, main part layer, enhancement layer and anticorrosive coating.

Preferably, the heat-resistant insulating pad is positioned on the inner surface of the main body layer, the reinforcing layer is positioned on the outer surface of the main body layer, and the corrosion-resistant coating layer is positioned on the outer surface of the reinforcing layer.

Preferably, the left and right sides of layer board all has the slider through support fixed mounting, the spout that uses with the slider cooperation is all seted up to the left and right sides of protecting crust inner chamber.

Preferably, the bottom of top cap fixed mounting has the stopper, and the top of protecting crust seted up with the stopper cooperation spacing groove of using.

Preferably, the heat-resistant insulating pad is a silicone rubber layer, the main body layer is an engineering plastic layer, the reinforcing layer is a stainless steel layer, and the corrosion-resistant coating is a polyurethane coating.

Preferably, the heat-resistant insulating pad has a thickness of 3mm to 3.5mm, the main body layer has a thickness of 1.5mm to 2mm, the reinforcing layer has a thickness of 1mm to 1.5mm, and the corrosion protection coating layer has a thickness of 20 μm to 25 μm.

Advantageous effects

Compared with the prior art, the utility model provides a high-safety lithium ion battery cell, which has the following beneficial effects:

1. the utility model puts the cell body on the top of the supporting plate, covers the top cover, the upper cover below the top cover is clamped on the top of the cell body, the protective shell and the top cover can be tightly clamped by using the bolt, the lower connecting block, the upper connecting block and the nut, thereby the space where the cell body is positioned is sealed, even if the cell body is damaged, the contact between the external air and the cell body can be prevented, thereby preventing the cell body from burning and exploding, the first spring and the second spring can buffer the impact force applied to the cell body, the heat-resistant insulating pad increases the heat resistance and the insulativity inside the protective shell, the main body layer ensures the strength of the protective shell, the insulation property is increased, the strength and the corrosion resistance of the protective shell are greatly increased by the reinforcing layer, the corrosion resistance is further increased by the anticorrosive coating, and the problems that the existing lithium ion battery cell is poor in protective effect, is easy to be damaged by vibration and is easy to burn and explode after being damaged are solved.

2. The limiting block of the utility model ensures that the protective shell and the top cover are more compact, and the sliding chute and the sliding block ensure that the supporting plate is stable.

Drawings

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

FIG. 2 is a schematic sectional view of an enlarged structure of the protective shell of the present invention;

FIG. 3 is an enlarged partial cross-sectional view of the protective shell of the present invention.

In the figure: 1. a protective shell; 101. a heat resistant insulating pad; 102. a body layer; 103. A reinforcing layer; 104. an anti-corrosion coating; 2. a top cover; 3. a bolt; 4. a lower connecting block; 5. an upper connecting block; 6. a nut; 7. a limiting block; 8. a first spring; 9. an upper cover; 10. connecting holes; 11. a chute; 12. a connecting wire; 13. a cell body; 14. a second spring; 15. a support plate; 16. a slide 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. 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 protective shell 1, the heat-resistant insulating pad 101, the main body layer 102, the reinforcing layer 103, the anti-corrosion coating 104, the top cover 2, the bolt 3, the lower connecting block 4, the upper connecting block 5, the nut 6, the limiting block 7, the first spring 8, the upper cover 9, the connecting hole 10, the sliding groove 11, the connecting wire 12, the cell body 13, the second spring 14, the supporting plate 15 and the slider 16 are all universal standard parts or parts known by those skilled in the art, and the structure and principle of the parts can be known by technical manuals or conventional experimental methods.

Referring to fig. 1-3, a high-safety lithium ion battery cell comprises a protective shell 1 and a top cover 2, wherein a plurality of second springs 14 are fixedly installed at the bottom of an inner cavity of the protective shell 1, a supporting plate 15 is fixedly installed at the top of the second springs 14, sliders 16 are fixedly installed at the left side and the right side of the supporting plate 15 through supports, chutes 11 matched with the sliders 16 are respectively formed at the left side and the right side of the inner cavity of the protective shell 1, the supporting plate 15 is stabilized by the chutes 11 and the sliders 16, a battery cell body 13 is arranged at the top of the supporting plate 15, a plurality of first springs 8 are fixedly installed at the bottom of the top cover 2, an upper cover 9 is fixedly connected at the bottom of the first springs 8, a connecting wire 12 is arranged at the right side of the battery cell body 13, a connecting hole 10 is formed at the right side of the protective shell 1, upper connecting blocks 5 are fixedly installed at the left side and the right side of the top cover 2, lower connecting blocks 4 are fixedly installed at the left side and the left side of the protective shell 1, the inner cavity of the upper connecting block 5 is provided with a bolt 3, the lower end of the surface of the bolt 3 is provided with a nut 6, the bottom of the top cover 2 is fixedly provided with a limiting block 7, the top of the protective shell 1 is provided with a limiting groove matched with the limiting block 7 for use, the limiting block 7 enables the protective shell 1 and the top cover 2 to be more compact, the protective shell 1 comprises a heat-resistant insulating pad 101, a main body layer 102, a reinforcing layer 103 and an anti-corrosion coating 104, the heat-resistant insulating pad 101 is positioned on the inner surface of the main body layer 102, the reinforcing layer 103 is positioned on the outer surface of the main body layer 102, the anti-corrosion coating 104 is positioned on the outer surface of the reinforcing layer 103, the heat-resistant insulating pad 101 is a silicone rubber layer, the main body layer 102 is an engineering plastic layer, the reinforcing layer 103 is a stainless steel layer, the anti-corrosion coating 104 is a polyurethane coating, the heat-resistant insulating pad 101 is 3mm-3.5mm in thickness, the main body layer 102 is 1.5mm-2mm in thickness, the reinforcing layer 103 is 1.5mm, the thickness of the anticorrosion coating 104 is 20-25 μm, the battery cell body 13 is placed on the top of the supporting plate 15, the top cover 2 is covered, the upper cover 9 below the top cover 2 is clamped on the top of the battery cell body 13, the protective shell 1 and the top cover 2 can be clamped by the bolt 3, the lower connecting block 4, the upper connecting block 5 and the nut 6, so that the space where the battery cell body 13 is located is closed, even if the battery cell body 13 is damaged, the external air can be prevented from contacting the battery cell body 13, so that the battery cell body 13 is prevented from burning and exploding, the impact force borne by the battery cell body 13 can be buffered by the first spring 8 and the second spring 14, the heat-resistant insulating pad 101 increases the heat resistance and the insulating property inside the protective shell 1, the main body layer 102 ensures the strength of the protective shell 1 and increases the insulating property, the reinforcing layer 103 greatly increases the strength and the corrosion resistance of the protective shell 1, the anticorrosion coating 104 further increases the anticorrosion property, the problems that the existing lithium ion battery cell is poor in protection effect, is easy to be damaged by vibration and is easy to burn and explode after being damaged are solved.

When in use, the cell body 13 is placed on the top of the supporting plate 15, the top cover 2 is covered, the upper cover 9 below the top cover 2 is clamped on the top of the cell body 13, the protective shell 1 and the top cover 2 can be clamped by the bolt 3, the lower connecting block 4, the upper connecting block 5 and the nut 6, so that the space where the cell body 13 is located is sealed, even if the cell body 13 is damaged, external air can be prevented from contacting with the cell body 13, so that the cell body 13 is prevented from burning and exploding, the first spring 8 and the second spring 14 can buffer the impact force received by the cell body 13, the heat-resistant insulating pad 101 increases the heat resistance and the insulating property inside the protective shell 1, the main body layer 102 ensures the strength of the protective shell 1 and increases the insulating property, the reinforcing layer 103 greatly increases the strength and the corrosion resistance of the protective shell 1, the anticorrosive coating 104 further increases the anticorrosive property, and solves the problem that the existing lithium ion cell has poor protective effect, is easy to be damaged by vibration and easy to burn and explode after being damaged.

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 high security lithium ion cell, includes protecting crust (1) and top cap (2), its characterized in that: the bottom of the inner cavity of the protective shell (1) is fixedly provided with a plurality of second springs (14), the top of each second spring (14) is fixedly provided with a supporting plate (15), the top of each supporting plate (15) is provided with an electric core body (13), the bottom of the top cover (2) is fixedly provided with a plurality of first springs (8), the bottom of each first spring (8) is fixedly connected with an upper cover (9), the right side of each electric core body (13) is provided with a connecting wire (12), the right side of the protective shell (1) is provided with a connecting hole (10), the left side and the right side of the top cover (2) are both fixedly provided with upper connecting blocks (5), the left side and the right side of the protective shell (1) are both fixedly provided with lower connecting blocks (4), the inner cavity of each upper connecting block (5) is provided with a bolt (3), and the lower end of the surface of the bolt (3) is provided with a nut (6), the protective shell (1) comprises a heat-resistant insulating pad (101), a main body layer (102), a reinforcing layer (103) and an anti-corrosion coating (104).

2. The high-safety lithium ion battery cell according to claim 1, wherein: the heat-resistant insulating pad (101) is positioned on the inner surface of the main body layer (102), the reinforcing layer (103) is positioned on the outer surface of the main body layer (102), and the corrosion-resistant coating (104) is positioned on the outer surface of the reinforcing layer (103).

3. The high-safety lithium ion battery cell according to claim 1, wherein: the left side and the right side of the supporting plate (15) are both fixedly provided with sliding blocks (16) through supports, and sliding grooves (11) matched with the sliding blocks (16) for use are formed in the left side and the right side of an inner cavity of the protective shell (1).

4. The high-safety lithium ion battery cell according to claim 1, wherein: the bottom fixed mounting of top cap (2) has stopper (7), and the top of protecting crust (1) has seted up the spacing groove that uses with stopper (7) cooperation.

5. The high-safety lithium ion battery cell according to claim 1, wherein: the heat-resistant insulating pad (101) is a silicone rubber layer, the main body layer (102) is an engineering plastic layer, the reinforcing layer (103) is a stainless steel layer, and the anti-corrosion coating (104) is a polyurethane coating.

6. The high-safety lithium ion battery cell according to claim 1, wherein: the thickness of the heat-resistant insulating pad (101) is 3mm-3.5mm, the thickness of the main body layer (102) is 1.5mm-2mm, the thickness of the reinforcing layer (103) is 1mm-1.5mm, and the thickness of the corrosion protection coating (104) is 20 μm-25 μm.