CN211605253U

CN211605253U - Lithium battery shell

Info

Publication number: CN211605253U
Application number: CN202020649580.8U
Authority: CN
Inventors: 李清辉
Original assignee: Boluo County Matrix New Energy Co ltd
Current assignee: Guangdong moment matrix new energy Co.,Ltd.
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-09-29
Anticipated expiration: 2030-04-26

Abstract

The utility model provides a lithium battery shell, this lithium battery shell includes: a plurality of first heat dissipation holes are formed in the first side wall and the second side wall, which are parallel to each other, of the shell. A plurality of second heat dissipation holes are formed in the first side wall and the second side wall, which are parallel to each other, of the protecting sleeve. The moisture-proof mechanism is accommodated in the shell, and the moisture-proof box is connected with the bottom of the shell. The dampproof plate is covered on the dampproof box. The moisture-proof plate is provided with a plurality of dehumidification holes, and the moisture-proof box is internally provided with a bagged moisture-proof agent. The insulating sheet and the first heat conducting sheet are contained in the shell. The insulating piece is connected with the first conducting strip, the surface of the first conducting strip, which faces away from the insulating piece, is connected with the conducting columns, and one end, far away from the first conducting strip, of each conducting column is connected with the second conducting strip. Each heat-conducting column penetrates through a heat-radiating through hole and is connected with the shell. Each second heat conducting fin is accommodated in a heat dissipation accommodating hole. The sizes of the first heat-conducting fin and the second heat-conducting fin are larger than those of the heat-conducting columns. The high moisture-proof and high heat dissipation requirements of special places on the lithium battery shell are met.

Description

Lithium battery shell

Technical Field

The utility model relates to a battery manufacturing field especially relates to a lithium battery shell.

Background

With the rapid development of new electric energy technology, new energy batteries are also rapidly developed, and the application range of the new energy batteries is wider and wider. However, the battery inevitably has some problems in the manufacturing process, which is greatly related to the manufacturing process and technology of the battery. The battery is composed of a shell, an upper cover, a polar plate, a clapboard, a bus bar, a polar post, a bridge protection plate, a terminal and the like. After the battery shell is produced and molded, a series of processing such as spraying and grinding is often required, so the battery shell is generally required to be fixed through the lithium battery shell, but the existing lithium battery shell is often required to be fixed at a specific position through a screw or a bolt in the using process, and after the processing is finished, the screw and the bolt are required to be unscrewed, so that the fixing process is troublesome and time-consuming, and the sizes of the battery shells of different models are different.

However, lithium batteries are a type of batteries using a nonaqueous electrolyte solution using lithium metal or a lithium alloy as a negative electrode material, and can be roughly classified into lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance of rechargeable batteries were all superior to those of lithium ion batteries. However, the heat dissipation and moisture resistance of the conventional lithium battery case cannot meet the requirements of special places.

SUMMERY OF THE UTILITY MODEL

Therefore, the lithium battery shell is needed to be provided aiming at the technical problem that the heat dissipation and moisture resistance of the traditional lithium battery shell cannot meet the requirements of special places.

A lithium battery case, comprising: the device comprises a shell, a cover body, a protective sleeve, a damp-proof mechanism, a plurality of radiators and two buffer sheets;

the cover body is covered on the shell, and the protective sleeve is sleeved on the shell;

the shell is of a hollow cuboid structure, and a plurality of first heat dissipation holes are formed in the first side wall and the second side wall of the shell, which are parallel to each other; at least two heat dissipation through holes are formed in the third side wall and the fourth side wall of the shell, which are parallel to each other; each inner side wall of the shell, provided with a plurality of first heat dissipation holes, is connected with one buffer sheet;

the protecting sleeve is of a hollow cuboid structure with an opening at one side, and a plurality of second heat dissipation holes are formed in the first side wall and the second side wall of the protecting sleeve which are parallel to each other; the third side wall and the fourth side wall of the protecting sleeve which are parallel to each other are both provided with at least two heat dissipation accommodating holes;

the moisture-proof mechanism is accommodated in the shell and comprises a moisture-proof plate and a moisture-proof box, the moisture-proof plate is of a rectangular plate structure, the moisture-proof box is of a hollow cuboid structure with one side opened, and the moisture-proof box is connected with the bottom of the shell; the moisture-proof plate is covered on the moisture-proof box; the moisture-proof plate is provided with a plurality of dehumidification holes, and the moisture-proof box is internally provided with a bagged moisture-proof agent;

the radiator comprises an insulating sheet, a first heat-conducting sheet, a heat-conducting column and a second heat-conducting sheet; the insulating sheet and the first heat conducting sheet are accommodated in the shell; the insulating sheet is connected with the first heat conducting sheet, one surface of the first heat conducting sheet, which faces away from the insulating sheet, is connected with the heat conducting column, and one end, which is far away from the first heat conducting sheet, of the heat conducting column is connected with the second heat conducting sheet; the heat-conducting columns are matched with the heat-radiating through holes, and each heat-conducting column penetrates through one heat-radiating through hole and is connected with the shell; each second heat conducting fin is accommodated in one heat dissipation accommodating hole; the sizes of the first heat-conducting fin and the second heat-conducting fin are larger than those of the heat-conducting columns.

In one embodiment, each of the first heat dissipation holes is communicated with one of the second heat dissipation holes.

In one embodiment, the cover is provided with a handle.

In one embodiment, the handle is provided with anti-skid lines.

In one embodiment, a protective sleeve is disposed on the handle.

In one embodiment, the protective sleeve is a soft rubber sleeve.

In one embodiment, the protective sleeve is a soft silicone sleeve.

In one embodiment, the protective sleeve is a flexible plastic sleeve.

In one embodiment, the protective sleeve is a sponge sleeve.

In one embodiment, the protective sleeve is provided with anti-skid lines.

In the working process of the lithium battery shell, on one hand, heat generated by a battery body in the shell can be diffused to the outside through the first heat dissipation holes formed in the shell and the second heat dissipation holes formed in the protective sleeve. On the other hand, the heat generated by the battery body in the case can also be diffused to the outside through the heat sink. The heat dissipation problem of the battery body is effectively solved. Moisture in the shell enters the moisture-proof box through a plurality of dehumidification holes formed in the moisture-proof plate and is adsorbed by the bagged moisture-proof agent, so that the moisture-proof performance of the lithium battery shell is effectively improved. The high moisture-proof and high heat dissipation requirements of special places on the lithium battery shell are met.

Drawings

FIG. 1 is a schematic structural diagram of a lithium battery case according to an embodiment;

FIG. 2 is a schematic diagram of a partial structure of a lithium battery case in the embodiment of FIG. 1;

FIG. 3 is a schematic diagram of a partial structure of a lithium battery case according to an embodiment;

FIG. 4 is a schematic diagram showing a partial structure of a lithium battery case according to an embodiment;

FIG. 5 is a schematic diagram of a heat sink in one embodiment;

FIG. 6 is a schematic view of the moisture barrier mechanism in one embodiment;

FIG. 7 is a schematic illustration of a disassembled structure of the moisture barrier mechanism in one embodiment.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 7, the present invention provides a lithium battery case 10, where the lithium battery case 10 includes: the cover comprises a shell 100, a cover body 200, a protection sleeve 300, a moisture-proof mechanism 400, a plurality of radiators 500 and two buffer sheets 600. The cover 200 covers the housing 100, and the protective cover 300 is disposed on the housing 100.

The casing 100 is a hollow cuboid structure, and a plurality of first heat dissipation holes 101 are formed in the first side wall and the second side wall of the casing 100, which are parallel to each other. At least two heat dissipation through holes 102 are formed on the third side wall and the fourth side wall of the housing 100, which are parallel to each other. Each inner sidewall of the casing 100 with the plurality of first heat dissipation holes 101 is connected to a buffer sheet 600. In this embodiment, the cushion sheet 600 is a soft rubber sheet having a certain elasticity, good toughness and good wear resistance. On the one hand, the direct collision between the external battery body and the inner side wall of the shell 100 can be avoided, the impact force between the external battery body and the shell 100 is buffered, and on the other hand, the soft rubber sheet has good insulating property, so that the safety performance of the lithium battery shell 10 is improved.

Lag 300 is one side open-ended cavity cuboid structure, all has seted up a plurality of second louvres 301 on lag 300 the first side wall that is parallel to each other and the second lateral wall. At least two heat dissipation accommodating holes 302 are formed in the third side wall and the fourth side wall of the protective cover 300, which are parallel to each other. In the present embodiment, each of the first heat dissipation holes 101 is communicated with a second heat dissipation hole 301, so as to further improve the heat dissipation performance of the lithium battery casing 10. In this embodiment, the protective cover 300 is a soft rubber cover having a certain elasticity, good toughness and wear resistance. On the one hand, the soft rubber sleeve can avoid the case 100 from directly colliding with an external object, so that external impact force is buffered, and on the other hand, the soft rubber sleeve has good insulating property, so that the safety performance of the lithium battery shell 10 is improved.

Moisture-proof mechanism 400 is accommodated in casing 100, and moisture-proof mechanism 400 includes moisture-proof board 410 and moisture-proof box 420, and moisture-proof board 410 is the rectangle platelike structure, and moisture-proof box 420 is one side open-ended cavity cuboid structure, and moisture-proof box 420 is connected with the bottom of casing 100. The moisture proof plate 410 is covered on the moisture proof case 420. The moisture-proof plate 410 is provided with a plurality of dehumidification holes 401, and the moisture-proof box 420 is internally provided with a bagged moisture-proof agent. In this embodiment, the bagged moisture barrier is a quicklime moisture barrier. In other embodiments, the bagged moisture barrier is a silica gel moisture barrier. The moisture-proof sheet 410 is less likely to be expanded with water and is less likely to be deformed. The moisture barrier 410 is more firmly abutted against the inner side wall of the housing 100 after swelling with water, increasing the connection stability of the moisture barrier mechanism 400 and the housing 100.

The heat sink 500 includes an insulating sheet 510, a first heat-conductive sheet 520, a heat-conductive column 530, and a second heat-conductive sheet 540. The insulating sheet 510 and the first heat conductive sheet 520 are accommodated in the housing 100. In the present embodiment, the insulating sheet 510 is a polyethylene insulating sheet, and in other embodiments, the insulating sheet is a PET sheet. The insulation sheet 510 increases the insulation performance of the heat sink 500, increasing the safety performance of the lithium battery pack 10. The insulating sheet 510 is connected to the first heat-conducting sheet 520, a surface of the first heat-conducting sheet 520 facing away from the insulating sheet 510 is connected to the heat-conducting pillar 530, and an end of the heat-conducting pillar 530 far away from the first heat-conducting sheet 520 is connected to the second heat-conducting sheet 540. In the present embodiment, the first thermally conductive sheet 520 and the second thermally conductive sheet 540 are both copper sheets, in other embodiments, the first thermally conductive sheet 520 and the second thermally conductive sheet 540 are both aluminum sheets, and in another embodiment, the first thermally conductive sheet 520 and the second thermally conductive sheet 540 are both nickel sheet alloys. The heat-conducting posts 530 are fitted with the heat-dissipating through-holes 102, and each heat-conducting post 530 passes through one of the heat-dissipating through-holes 102 and is connected to the housing 100. Each second heat-conducting fin 540 is accommodated in one heat dissipation accommodating hole 302. The first thermal conductive sheet 520 and the second thermal conductive sheet 540 are each larger in size than the thermal conductive pillar 530. In the present embodiment, the first heat-conducting plate 520, the heat-conducting pillar 530, and the second heat-conducting plate 540 are integrally cast steel.

In the working process of the lithium battery shell 10, on one hand, heat generated by the battery body in the shell 100 can be diffused to the outside through the plurality of first heat dissipation holes 101 formed in the shell 100 and the plurality of second heat dissipation holes 301 formed in the protective cover 300. On the other hand, the heat generated from the battery body in the case 100 may also be diffused to the outside through the heat sink 500. The heat dissipation problem of the battery body is effectively solved. Moisture in the case 100 enters the moisture-proof box 420 through the moisture-proof holes 401 formed in the moisture-proof plate 410 and is absorbed by the moisture-proof agent in the bag, thereby effectively increasing the moisture-proof performance of the lithium battery case 10. The high moisture-proof and high heat dissipation requirements of the lithium battery shell 10 in special places are met.

In order to increase the convenience of moving the lithium battery case, please refer to fig. 1 to 2, in one embodiment, a handle 210 is disposed on the cover 200, and a user can move the lithium battery case by holding the handle 210. Further, the handle 210 is provided with anti-slip lines to increase the anti-slip performance of the handle 210 and increase the friction force between the hand and the handle 210. In one embodiment, a protective sleeve is provided on the handle to prevent the hand from being frayed by the handle 210. The protective sheath is soft rubber sleeve, and soft rubber sleeve has certain elasticity, good toughness and non-skid property, when the protection hand, can increase handle 210's non-skid property, increases the frictional force between hand and the handle 210. In another embodiment, the protective sleeve is a soft silicone sleeve. In yet another embodiment, the protective sheath is a flexible plastic sheath. In other embodiments, the protective sheath is a sponge sheath. Further, the protective sleeve is provided with anti-skidding lines so as to further increase the anti-skidding performance of the protective sleeve. As such, the handle 210 increases the convenience of movement of the lithium battery case.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A lithium battery case, comprising: the device comprises a shell, a cover body, a protective sleeve, a damp-proof mechanism, a plurality of radiators and two buffer sheets;

2. The lithium battery case as claimed in claim 1, wherein each of the first heat dissipation holes is in communication with one of the second heat dissipation holes.

3. The lithium battery cell casing of claim 1, wherein the cover is provided with a handle.

4. The lithium battery cell casing of claim 3, characterized in that the handle is provided with anti-slip threads.

5. The lithium battery cell casing of claim 3, characterized in that a protective sheath is provided on the handle.

6. The lithium battery cell casing of claim 5, wherein the protective sheath is a soft rubber sheath.

7. The lithium battery shell as recited in claim 5, wherein the protective sheath is a soft silicone sheath.

8. The lithium battery cell casing of claim 5, wherein the protective sheath is a flexible plastic sheath.

9. The lithium battery cell casing of claim 5, wherein the protective sheath is a sponge sheath.

10. The lithium battery shell as recited in claim 5, wherein the protective sleeve is provided with anti-slip threads.