CN211208506U

CN211208506U - Explosion-proof lithium battery

Info

Publication number: CN211208506U
Application number: CN201922136273.XU
Authority: CN
Inventors: 戚玲恒
Original assignee: Shaanxi Changfeng Power Co ltd
Current assignee: Shaanxi Changfeng Power Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-08-07
Anticipated expiration: 2029-12-03

Abstract

The utility model relates to the technical field of lithium batteries, in particular to an explosion-proof lithium battery, which comprises a battery body and a protection frame, wherein the protection frame is of a hollow structure, the center of the top of the protection frame is fixedly connected with a heat-conducting silica gel seat, the center of the top of the heat-conducting silica gel seat is provided with a first through hole, the bottom of the first through hole penetrates through the top of the inner wall of the protection frame, the top of the inner wall of the protection frame is attached to the top of the battery body, the surface of the battery body is fixedly connected with a heat-conducting silica gel ring, the outer wall of the heat-conducting silica gel ring is fixedly connected with a rubber column, one end of the rubber column, which is far away from the heat-conducting silica gel ring, is fixedly connected with an anti; the device makes the battery during operation, and the heat that its surface produced can transmit the external world through heat conduction silica gel circle, has reduced thermal accumulation on the battery body.

Description

Explosion-proof lithium battery

Technical Field

The utility model relates to a lithium cell technical field, concretely relates to explosion-proof lithium cell.

Background

Lithium is the smallest and most active metal in diameter on the periodic table. The volume is small, so the capacity density is high, and therefore, the chemical characteristics are more active, and the danger is extremely high under special conditions. Lithium metal, when exposed to air, undergoes a violent oxidation reaction with oxygen and explodes. If the lithium battery explodes in the using process, casualties are caused slightly, and fire disasters are caused seriously, so that the lithium battery needs to be subjected to explosion-proof treatment.

The reason of lithium cell explosion generally divide into internal factor and external factor, external factor is because the lithium cell suffers external force such as striking, shell or inner structure to the lithium cell has caused destruction, lead to inside oxygen can get into the lithium cell, and then produce the explosion, internal factor is because the heat that the battery produced can't give off the external world in the charging and discharging process, the heat piles up can cause the battery swell after certain degree, and then rises the brokenly with the battery, thereby produce the explosion, consequently need design an explosion-proof lithium cell, in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides an explosion-proof lithium cell, possess the antidetonation and prevent falling, avoid advantages such as heat is piled up, solved the problem of traditional lithium cell easy explosion.

The utility model relates to an explosion-proof lithium battery, which comprises a battery body and a protective frame, wherein the center of the top of the battery body is fixedly connected with a battery anode, the center of the bottom of the battery body is fixedly connected with a battery cathode, the protective frame is of a hollow structure, the center of the top of the protective frame is fixedly connected with a heat-conducting silica gel seat, the center of the top of the heat-conducting silica gel seat is provided with a first through hole, the bottom of the first through hole penetrates through the top of the inner wall of the protective frame, the battery anode penetrates through the inner wall of the first through hole and extends to the outside of the protective frame, the top of the inner wall of the protective frame is attached to the top of the battery body, the surface of the battery body is fixedly connected with a heat-conducting silica gel ring, the outer wall of the heat-conducting silica gel ring is fixedly connected with a rubber column, the one end fixedly connected with antidetonation pad that the heat conduction silica gel circle was kept away from to the rubber column, the one end that the rubber column was kept away from to the antidetonation pad is fixed connection mutually with the inner wall of bearer bar.

The utility model discloses an explosion-proof lithium cell, wherein heat conduction silica gel seat are round platform shape structure, the louvre has evenly been seted up on the surface of heat conduction silica gel seat, the inner wall of heat conduction silica gel seat is laminated mutually with anodal surface of battery, and this structure sets up for the anodal during operation of battery, the heat of its surface production can transmit the external world through heat conduction silica gel seat, has reduced thermal piling up on the battery body.

The utility model discloses an explosion-proof lithium cell, wherein the rubber post distributes along the vertical direction equidistance, all leaves the space between every rubber post, and this structure sets up, has improved the cushioning effect of the device rubber post to external impact force.

The utility model discloses an explosion-proof lithium cell, wherein the second through-hole has been seted up to the central authorities of protective frame bottom, battery body's bottom is laminated with the inner wall of second through-hole mutually, and this structure setting has improved the leakproofness between protective frame and the battery body.

The utility model discloses an explosion-proof lithium cell, wherein a plurality of first heat conduction holes have been seted up at the top of bearer bar, a plurality of second heat conduction holes have been seted up to the bottom of bearer bar, the equal fixedly connected with heat conduction copper post in inside of first heat conduction hole and second heat conduction hole, this structure setting for the heat conduction copper post can be with the inside heat transfer of bearer bar to the external world, has improved thermal dissipation efficiency.

The utility model discloses an explosion-proof lithium cell, wherein first heat conduction hole and second heat conduction hole are six, first heat conduction hole and second heat conduction hole all use the center of bearer bar to be circular and be annular equidistance and distribute, the shape structure of heat conduction copper post agrees with the shape structure of first heat conduction hole and second heat conduction hole mutually.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses an antidetonation pad that sets up at the protection frame inner wall, fixed connection's rubber post is kept up to the cooperation antidetonation for when battery body receives the striking or drops from the high altitude, can play the cushioning effect to the impact force, avoid the impact force direct action on battery body, the prevention battery body receives the impact force and damaged, has played the guard action to battery body, has improved the device's anti ability of falling.

2. The utility model discloses a heat conduction silica gel seat that sets up at the protective frame top, the louvre that sets up on the cooperation heat conduction silica gel seat, make the battery positive pole at the during operation, the heat that its surface produced can transmit the external world through heat conduction silica gel seat, the thermal piling up on the battery body has been reduced, through the heat conduction silica gel circle that sets up on the battery body surface, make the heat that the battery body surface produced can transmit the inside of protective frame through heat conduction silica gel circle, through first heat conduction hole and the second heat conduction hole that sets up in protective frame top and bottom, cooperate the inside heat conduction copper post that sets up of first heat conduction hole and second heat conduction hole, make the heat conduction copper post can transmit the inside heat of protective frame to the external world, thermal dissipation efficiency has been improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of the overall front cross-sectional structure of the present invention;

FIG. 2 is a schematic top view of the protection frame of the present invention;

FIG. 3 is a bottom view of the protection frame of the present invention;

fig. 4 is a schematic view of the structure of the heat-conducting silicone seat of the present invention.

In the figure: 1. a battery body; 2. a battery positive electrode; 3. a battery negative electrode; 4. a protective frame; 41. a second through hole; 5. an anti-seismic pad; 6. a heat-conducting silica gel ring; 7. a rubber column; 8. a thermally conductive silicone base; 81. a first through hole; 82. heat dissipation holes; 9. a first heat conduction hole; 91. a second heat conduction hole; 10. a thermally conductive copper pillar.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of 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 addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-4, the anti-explosion lithium battery of the present invention comprises a battery body 1 and a protection frame 4, wherein a battery anode 2 is fixedly connected to the center of the top of the battery body 1, a battery cathode 3 is fixedly connected to the center of the bottom of the battery body 1, the protection frame 4 is a hollow structure, a heat conductive silicone seat 8 is fixedly connected to the center of the top of the protection frame 4, a first through hole 81 is formed in the center of the top of the heat conductive silicone seat 8, the bottom of the first through hole 81 penetrates through the top of the inner wall of the protection frame 4, the battery anode 2 penetrates through the inner wall of the first through hole 81 and extends to the outside of the protection frame 4, the top of the inner wall of the protection frame 4 is attached to the top of the battery body 1, a heat conductive silicone ring 6 is fixedly connected to the surface of the battery body 1, a rubber column 7 is fixedly connected to the outer wall of the heat conductive silicone ring 6, and an anti-shock pad 5 is fixedly, and one end of the anti-seismic pad 5, which is far away from the rubber column 7, is fixedly connected with the inner wall of the protective frame 4.

The heat-conducting silica gel seat 8 is of a round table-shaped structure, the heat dissipation holes 82 are uniformly formed in the surface of the heat-conducting silica gel seat 8, the inner wall of the heat-conducting silica gel seat 8 is attached to the surface of the battery anode 2, the structure is arranged, so that when the battery anode 2 works, heat generated on the surface of the battery anode can be transmitted to the outside through the heat-conducting silica gel seat 8, and accumulation of heat on the battery body 1 is reduced.

Rubber column 7 all leaves the space along the equidistance distribution of vertical direction between every rubber column 7, and this structure setting has improved the device rubber column 7 to the cushioning effect of external impact force.

The second through hole 41 has been seted up to the central authorities of protective frame 4 bottom, and the bottom of battery body 1 is laminated mutually with the inner wall of second through hole 41, and this structural arrangement has improved the leakproofness between protective frame 4 and the battery body 1.

A plurality of first heat conduction holes 9 have been seted up at the top of bearer bar 4, and a plurality of second heat conduction holes 91 have been seted up to the bottom of bearer bar 4, and the equal fixedly connected with heat conduction copper post 10 in inside of first heat conduction hole 9 and second heat conduction hole 91, this structure setting for heat conduction copper post 10 can be with the inside heat transfer of bearer bar 4 to the external world, has improved thermal dissipation efficiency.

The first heat conduction hole 9 and the second heat conduction hole 91 are six, the first heat conduction hole 9 and the second heat conduction hole 91 are distributed in an annular shape at equal intervals by taking the center of the protective frame 4 as a circle, and the shape structure of the heat conduction copper column 10 is matched with the shape structure of the first heat conduction hole 9 and the shape structure of the second heat conduction hole 91.

The working principle is as follows: when battery body 1 receives the striking or drops from the eminence, the impact force is at first used in on protecting frame 4, then the impact force is transmitted to antidetonation pad 5 through protecting frame 4, transmit to rubber column 7 by antidetonation pad 5 again, the impact force constantly reduces at the in-process of transmission, the guard action has been played to battery body 1, avoid external impact force direct action on battery body 1, when battery body 1 work produces the heat, the heat can give off the inside of protecting frame 4 through heat conduction silica gel circle 6, transmit the heat to the external world by heat conduction copper post 10 again, can avoid battery body 1 surface to pile up a large amount of heats, the guard action has been played to battery body 1.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an explosion-proof lithium cell, includes battery body (1) and bearer bar (4), the central fixedly connected with battery positive pole (2) at battery body (1) top, the central fixedly connected with battery negative pole (3) of battery body (1) bottom, its characterized in that: the protective frame (4) is of a hollow structure, the center of the top of the protective frame (4) is fixedly connected with a heat-conducting silica gel seat (8), the center of the top of the heat-conducting silica gel seat (8) is provided with a first through hole (81), the bottom of the first through hole (81) penetrates through the top of the inner wall of the protective frame (4), the battery anode (2) penetrates through the inner wall of the first through hole (81) and extends to the outside of the protective frame (4), the top of the inner wall of the protective frame (4) is attached to the top of the battery body (1), the surface of the battery body (1) is fixedly connected with a heat-conducting silica gel ring (6), the outer wall of the heat-conducting silica gel ring (6) is fixedly connected with a rubber column (7), one end of the rubber column (7) far away from the heat-conducting silica gel ring (6) is fixedly connected with an anti-seismic pad (5), one end of the anti-seismic pad (5) far away from the rubber column (7) is fixedly connected with the inner wall of the protective frame (4).

2. The explosion-proof lithium battery of claim 1, wherein: the heat-conducting silica gel seat (8) is of a round table-shaped structure, heat dissipation holes (82) are uniformly formed in the surface of the heat-conducting silica gel seat (8), and the inner wall of the heat-conducting silica gel seat (8) is attached to the surface of the battery anode (2).

3. The explosion-proof lithium battery of claim 1, wherein: the rubber columns (7) are distributed at equal intervals in the vertical direction, and gaps are reserved among the rubber columns (7).

4. The explosion-proof lithium battery of claim 1, wherein: the center of the bottom of the protective frame (4) is provided with a second through hole (41), and the bottom of the battery body (1) is attached to the inner wall of the second through hole (41).

5. The explosion-proof lithium battery of claim 1, wherein: a plurality of first heat conduction holes (9) are formed in the top of the protection frame (4), a plurality of second heat conduction holes (91) are formed in the bottom of the protection frame (4), and heat conduction copper columns (10) are fixedly connected to the inside of the first heat conduction holes (9) and the inside of the second heat conduction holes (91).

6. An explosion-proof lithium battery as claimed in claim 5, characterized in that: first heat conduction hole (9) and second heat conduction hole (91) are six, first heat conduction hole (9) and second heat conduction hole (91) all use the center of protective frame (4) to be circular and be annular equidistance and distribute, the shape structure of heat conduction copper post (10) agrees with mutually with the shape structure of first heat conduction hole (9) and second heat conduction hole (91).