CN213583939U

CN213583939U - Lithium battery with high-temperature protection structure

Info

Publication number: CN213583939U
Application number: CN202023028745.9U
Authority: CN
Inventors: 韩冰; 郭威炯; 韩枫; 陈彤彤; 李海龙
Original assignee: Hebei Yongrui Electric Power Technology Co ltd
Current assignee: Hebei Yongrui Electric Power Technology Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-06-29
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a lithium cell with high temperature protective structure, including lithium cell body, lithium cell body includes casing, anodal post, negative pole post, positive plate, diaphragm and negative plate, the casing includes first radiating fin, cavity, second radiating fin, insulating heat-conducting layer, inner shell, shell and third radiating fin, the inside of shell is provided with the inner shell, the cladding has insulating heat-conducting layer on the inner wall of inner shell, be provided with the cavity between the inner wall of shell and the outer wall of inner shell, the outer wall of inner shell all installs the second radiating fin all around, the inner wall of shell all installs the third radiating fin all around, first radiating fin is all installed around to the outer wall of shell. The utility model discloses can dispel the heat fast lithium cell body, avoid lithium cell body to take place because of the condition that the high temperature leads to damaging, improve lithium cell body's life, the practicality is strong.

Description

Lithium battery with high-temperature protection structure

Technical Field

The utility model relates to a lithium cell technical field specifically is a lithium cell with high temperature protective structure.

Background

Because the lithium ion battery has the advantages of high energy density, high power density, multiple recycling times, long storage time and the like, the lithium ion battery is widely used on portable electronic equipment such as mobile phones, digital cameras, portable computers and the like, has wide application prospect in the aspects of large and medium-sized electric equipment such as electric vehicles such as electric bicycles and the like, energy storage facilities and the like, and becomes a key for solving global problems such as energy crisis, environmental pollution and the like.

In the charging or using process of the lithium battery, the generated heat can be gathered in the lithium battery and is not easy to dissipate, the heat dissipation speed is slow, the lithium battery with insufficient high temperature resistance is easy to damage, and the service life of the lithium battery is influenced; therefore, the existing use requirements are not satisfied.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell with high temperature protective structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a lithium cell with high temperature protective structure, includes lithium cell body, lithium cell body includes casing, positive post, negative pole post, positive plate, diaphragm and negative plate, the casing includes first radiating fin, cavity, second radiating fin, insulating heat-conducting layer, inner shell, shell and third radiating fin, the inside of shell is provided with the inner shell, the cladding has insulating heat-conducting layer on the inner wall of inner shell, be provided with the cavity between the inner wall of shell and the outer wall of inner shell, the outer wall of inner shell all installs the second radiating fin all around, the inner wall of shell all installs the third radiating fin all around, first radiating fin is all installed all around to the outer wall of shell.

Preferably, both sides of the top of the shell are respectively provided with a positive pole column and a negative pole column.

Preferably, a positive plate and a negative plate are respectively arranged on two sides of the interior of the shell, and a diaphragm is arranged between the positive plate and the negative plate.

Preferably, the cavity is filled with heat conduction oil.

Preferably, the first radiating fins, the second radiating fins, the third radiating fins, the outer shell and the inner shell are all made of aluminum alloy.

Preferably, the insulating and heat conducting layer is made of ceramic.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model is arranged by matching a series of structures, when heat is generated in the charging and discharging process of the lithium battery body, the insulating heat conduction layer can transmit the heat to the inner shell, because the cavity is arranged between the inner shell and the outer shell and is filled with heat conduction oil, the heat on the inner shell can be quickly transmitted to the heat conduction oil, the second heat dissipation fin increases the heat dissipation area of the inner shell, the heat dissipation speed of the inner shell is improved, the heat conduction oil transmits the heat to the outer shell, the third heat dissipation fin increases the contact area of the outer shell and the heat conduction oil, the heat transmission speed of the heat conduction oil to the outer shell is improved, the outer shell is positioned outside, the heat on the outer shell can be quickly dissipated, the first heat dissipation fin increases the contact area of the outer shell and the outside cold air, the heat dissipation speed is improved, thereby the utility model can quickly dissipate the heat of the lithium battery body, and avoids the damage of, the service life of lithium cell body is improved, and the practicality is strong.

Drawings

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

FIG. 2 is a front view of the present invention;

fig. 3 is a sectional view of the housing of the present invention.

In the figure: 1. a lithium battery body; 11. a housing; 1101. a first heat radiation fin; 1102. a cavity; 1103. a second heat radiation fin; 1104. an insulating heat-conducting layer; 1105. an inner shell; 1106. a housing; 1107. a third heat radiation fin; 12. a positive post; 13. a negative pole post; 14. a positive plate; 15. a diaphragm; 16. and a negative plate.

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 "upper", "lower", "inner", "outer", "front end", "rear end", "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 description and simplification of description, but do not indicate or imply that the device or element to which the reference is made 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," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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. 1-3, the present invention provides an embodiment: a lithium battery with a high-temperature protection structure comprises a lithium battery body 1, wherein the lithium battery body 1 comprises a shell 11, a positive pole 12, a negative pole 13, a positive pole 14, a diaphragm 15 and a negative pole 16, the shell 11 comprises a first radiating fin 1101, a cavity 1102, a second radiating fin 1103, an insulating heat-conducting layer 1104, an inner shell 1105, an outer shell 1106 and a third radiating fin 1107, the inner shell 1106 is arranged inside the outer shell 1106, the insulating heat-conducting layer 1104 is coated on the inner wall of the inner shell 1105, the cavity 1102 is arranged between the inner wall of the outer shell 1106 and the outer wall of the inner shell 1105, the second radiating fin 1103 is arranged around the outer wall of the inner shell 1105, the third radiating fin 1107 is arranged around the inner wall of the outer shell 1106, the first radiating fins 1101 are arranged around the outer wall of the outer shell 1106, the positive pole 12 and the negative pole 13 are respectively arranged on two sides of the top of the, a diaphragm 15 is arranged between the positive plate 14 and the negative plate 16, heat conducting oil is filled in the cavity 1102, the first radiating fin 1101, the second radiating fin 1103, the third radiating fin 1107, the outer shell 1106 and the inner shell 1105 are all made of aluminum alloy, and the insulating heat conducting layer 1104 is made of ceramic.

The working principle is as follows: when in use, the lithium battery body 1 can generate heat in the charging and discharging processes, the insulating heat conduction layer 1104 can transfer the heat to the inner shell 1105, because the cavity 1102 is arranged between the inner shell 1105 and the outer shell 1106, and the heat conduction oil is filled in the cavity 1102, the heat on the inner shell 1105 can be quickly transferred to the heat conduction oil, the second heat dissipation fin 1103 increases the heat dissipation area of the inner shell 1105, the heat dissipation speed of the inner shell 1105 is increased, the heat conduction oil transfers the heat to the outer shell 1106, the third heat dissipation fin 1107 increases the contact area of the outer shell 1106 and the heat conduction oil, the heat transfer speed of the heat conduction oil to the outer shell 1106 is increased, the outer shell 1106 is positioned outside, the heat on the outer shell 1106 can be quickly dissipated, the first heat dissipation fin 1101 increases the contact area of the outer shell 1106 and the outside cold air, the heat dissipation speed is increased, thereby the utility model can, the situation that the lithium battery body 1 is damaged due to overhigh temperature is avoided, the service life of the lithium battery body 1 is prolonged, and the practicability is high.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a lithium cell with high temperature protective structure, includes lithium cell body (1), its characterized in that: the lithium battery body (1) comprises a shell (11), a positive pole (12), a negative pole (13), a positive pole plate (14), a diaphragm (15) and a negative pole plate (16), the shell (11) comprises first radiating fins (1101), cavities (1102), second radiating fins (1103), an insulating and heat conducting layer (1104), an inner shell (1105), an outer shell (1106) and third radiating fins (1107), an inner shell (1105) is arranged inside the outer shell (1106), the inner wall of the inner shell (1105) is coated with an insulating heat-conducting layer (1104), a cavity (1102) is arranged between the inner wall of the outer shell (1106) and the outer wall of the inner shell (1105), the periphery of the outer wall of the inner shell (1105) is provided with second radiating fins (1103), third radiating fins (1107) are arranged on the periphery of the inner wall of the shell (1106), and first radiating fins (1101) are arranged on the periphery of the outer wall of the shell (1106).

2. The lithium battery with the high-temperature protection structure as claimed in claim 1, wherein: and both sides of the top of the shell (11) are respectively provided with a positive pole column (12) and a negative pole column (13).

3. The lithium battery with the high-temperature protection structure as claimed in claim 1, wherein: the battery shell is characterized in that a positive plate (14) and a negative plate (16) are respectively arranged on two sides of the interior of the shell (11), and a diaphragm (15) is arranged between the positive plate (14) and the negative plate (16).

4. The lithium battery with the high-temperature protection structure as claimed in claim 1, wherein: and heat conduction oil is filled in the cavity (1102).

5. The lithium battery with the high-temperature protection structure as claimed in claim 1, wherein: the first radiating fins (1101), the second radiating fins (1103), the third radiating fins (1107), the outer shell (1106) and the inner shell (1105) are all made of aluminum alloy.

6. The lithium battery with the high-temperature protection structure as claimed in claim 1, wherein: the insulating and heat conducting layer (1104) is made of ceramic.