CN211455811U

CN211455811U - Explosion-proof shell for lithium ion battery

Info

Publication number: CN211455811U
Application number: CN201921743122.4U
Authority: CN
Inventors: 孙仁界
Original assignee: Zigong Yidu Energy Storage Technology Co ltd
Current assignee: Zigong Yidu Energy Storage Technology Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-09-08
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses an explosion-proof shell for lithium ion battery relates to the lithium cell field. The explosion-proof shell for the lithium ion battery comprises an explosion-proof shell, wherein the upper surface of the explosion-proof shell and the bottom surface of the explosion-proof shell are both fixedly connected with a pressure relief box, an ABS plate layer is arranged inside the explosion-proof shell, symmetrical fixed plates are arranged inside the explosion-proof shell, sliding grooves are formed in one side face, close to each other, of each fixed plate, two sliding blocks matched with the sliding grooves are clamped inside each sliding groove, the explosion-proof shell for the lithium ion battery can push open the sealing plug blocked in the pressure relief pipe by huge pressure through the actions of the sealing pipe, the pressure relief hole, the pressure relief pipe, the sealing plug, the compression spring, the sliding rod and the buffer gasket, thereby pass through the pressure release pipe with pressure and excrete, the heat also passes through the release of pressure release pipe simultaneously, prevents that pressure and heat from concentrating the phenomenon that leads to the battery explosion to the security of explosion-proof shell has been improved.

Description

Explosion-proof shell for lithium ion battery

Technical Field

The utility model relates to a lithium cell technical field specifically is an explosion-proof shell for lithium ion battery.

Background

The lithium battery is a primary battery which takes lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, is different from a rechargeable battery, namely a lithium ion battery and a lithium ion polymer battery, the inventor of the lithium battery is edison, and because the chemical characteristics of the lithium metal are very active, the lithium metal is processed, stored and used, and has very high requirements on the environment, so the lithium battery is not applied for a long time, along with the development of microelectronic technology at the end of the twentieth century, miniaturized equipment is increased day by day, and very high requirements on a power supply are provided, the lithium battery enters a large-scale practical stage, along with the development of science and technology, the consumption of electronic products is increased year by year, most electronic products need to be powered by the lithium battery, the battery is approximately composed of a battery shell and electrolyte in the shell, and the battery shell plays a role of protecting the electrolyte in the battery, the electrolyte leakage is prevented, the internal pressure and heat of the existing lithium battery can rapidly climb after long-time discharging or charging, once the pressure value reaches a certain range, and the battery explosion is easily caused when effective discharge cannot be achieved, so that the safety of the battery is reduced, and for this reason, an explosion-proof shell for the lithium ion battery is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be not enough to prior art, the utility model provides an explosion-proof shell for lithium ion battery has solved current lithium cell and has discharged or charge for a long time, and its inside pressure and heat can climb fast, in case the pressure value reachs certain limit to when obtaining effectual excretion, just arouse the battery explosion very easily, consequently reduced the problem of the security of battery.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: an explosion-proof shell for a lithium ion battery comprises an explosion-proof shell, wherein the upper surface of the explosion-proof shell and the bottom surface of the explosion-proof shell are fixedly connected with pressure relief boxes, an ABS (acrylonitrile butadiene styrene) plate layer is arranged inside the explosion-proof shell, symmetrical fixing plates are arranged inside the explosion-proof shell, one side surface of the two fixing plates, which are close to each other, is provided with a sliding chute, two sliding blocks matched with the sliding chutes are clamped inside each sliding chute, symmetrical first springs are fixedly connected to the inner side wall of the ABS plate layer, one ends, which are close to each other, of the two first springs are fixedly connected with a buffer plate, the top end of each buffer plate and the bottom end of each buffer plate are respectively fixedly connected with one side surface, which is close to each other, of the two sliding blocks, a fixing seat is fixedly connected to the inner wall of each pressure relief box, and a sealing pipe, every the equal fixedly connected with blotter of inner wall of sealed tube, two the equal fixedly connected with slide bar in a side that the blotter is close to each other, every the surface of slide bar all twines compression spring, every the inside of sealed tube all is equipped with the sealing plug, the through-hole has all been seted up, two the outside that the through-hole all runs through and extends to the sealed tube in a side that compression spring is close to each other, every the equal fixed intercommunication of left and right sides face of sealed tube has the pressure release pipe, two a side that the sealed tube is close to each other all runs through explosion proof housing, waterproof layer and ABS board material layer in proper order and extends to explosion proof housing's inside.

Preferably, the inner wall of the explosion-proof shell is fixedly connected with a waterproof layer, and the inner wall of the waterproof layer is fixedly connected with the outer surface of the ABS plate layer.

Preferably, two the equal fixedly connected with symmetrical buffer spring of a side that the fixed plate kept away from each other, every buffer spring keep away from the one end of fixed plate all with the inner wall fixed connection on ABS board layer.

Preferably, the front surface of the explosion-proof housing is fixedly connected with a cover plate, and the front surface of the cover plate is fixedly connected with a battery mark.

Preferably, each pressure relief box's the left and right sides face has all seted up the pressure relief hole, the quantity of pressure relief hole is six at least.

Preferably, the explosion-proof housing is internally provided with a lithium battery, and the left side surface and the right side surface of the lithium battery are fixedly connected with one side surface of the two buffer plates, which are close to each other.

(III) advantageous effects

The utility model provides an explosion-proof shell for lithium ion battery. The method has the following beneficial effects:

(1) this explosion-proof housing for lithium ion battery, can guarantee laying of battery through explosion-proof housing, can avoid outside moisture to get into explosion-proof housing through the waterproof layer and lead to the battery to wet, through the very good impact toughness who has on ABS sheet material layer, can cushion some energy of explosion, reduce the impact force of explosion, through first spring, a supporting plate, buffer spring, the cooperation of fixed plate and spout and slider, can make the lithium cell cushion some impact force in the twinkling of an eye in the explosion, prevent to cause personnel's injury, the security of lithium cell has been improved.

(2) This explosion-proof housing for lithium ion battery, through the effect of sealed tube, pressure release hole, pressure release pipe, sealing plug, compression spring, slide bar and cushion, can make huge pressure open with the sealing plug of shutoff in the pressure release pipe to excrete pressure through the pressure release pipe, the heat also passes through the release of pressure release pipe simultaneously, prevents the phenomenon that pressure and heat concentrate and lead to the battery explosion, thereby has improved explosion-proof housing's security.

Drawings

Fig. 1 is a sectional view of the front view of the explosion-proof housing of the present invention;

FIG. 2 is a cross-sectional view of the pressure relief box of the present invention;

fig. 3 is a front view of the explosion-proof housing of the present invention.

In the figure: 1 explosion-proof shell, 2 waterproof layer, 3ABS board layer, 4 spouts, 5 pressure release boxes, 6 sealed tubes, 7 buffer springs, 8 fixed plates, 9 lithium batteries, 10 first springs, 11 supporting plates, 12 sliders, 13 buffer cushions, 14 pressure release tubes, 15 sealing plugs, 16 fixing seats, 17 compression springs, 18 sliding rods, 19 through holes, 20 cover plates, 21 battery marks and 22 pressure release holes.

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.

As shown in fig. 1-3, the utility model provides a technical solution: an explosion-proof shell for a lithium ion battery comprises an explosion-proof shell 1, wherein a waterproof layer 2 is fixedly connected to the inner wall of the explosion-proof shell 1, the inner wall of the waterproof layer 2 is fixedly connected with the outer surface of an ABS (acrylonitrile butadiene styrene) plate layer 3, the safety of the shell can be improved, and accidental injury can be reduced, a pressure relief box 5 is fixedly connected to the upper surface of the explosion-proof shell 1 and the bottom surface of the explosion-proof shell 1, the ABS plate layer 3 is arranged inside the explosion-proof shell 1, symmetrical fixing plates 8 are arranged inside the explosion-proof shell 1, symmetrical buffer springs 7 are fixedly connected to the side surfaces, far away from each other, of the two fixing plates 8, one end, far away from each fixing plate 8, of each buffer spring 7 is fixedly connected with the inner wall of the ABS plate layer 3, impact force can be buffered, explosion energy can be reduced, sliding grooves 4 are arranged on the side surfaces, close to each other, the inner side wall of the ABS plate layer 3 is fixedly connected with symmetrical first springs 10, one ends, close to each other, of the two first springs 10 are fixedly connected with buffer plates 11, the top end of each buffer plate 11 and the bottom end of each buffer plate 11 are fixedly connected with one side face, close to each other, of the two groups of sliders 12 respectively, the left side face and the right side face of each pressure relief box 5 are provided with pressure relief holes 22, the number of the pressure relief holes 22 is at least six, the pressure relief effect can be improved, over-pressure is prevented, the inner wall of each pressure relief box 5 is fixedly connected with a fixing seat 16, one side face, close to each other, of the two fixing seats 16 is fixedly connected with a sealing pipe 6, the inner wall of each sealing pipe 6 is fixedly connected with a buffer cushion 13, one side face, close to each other, of the two buffer cushions 13 is fixedly connected with a sliding rod 18, the outer, through-hole 19 has all been seted up to sealing plug 15's bottom surface, the side that two compression spring 17 are close to each other all runs through-hole 19 and extends to the outside of sealing tube 6, the equal fixed intercommunication of the left and right sides face of every sealing tube 6 has pressure relief pipe 14, the side that two sealing tubes 6 are close to each other all runs through explosion-proof housing 1 in proper order, waterproof layer 2 and ABS sheet material layer 3 and extend to explosion-proof housing 1's inside, explosion-proof housing 1's positive fixedly connected with apron 20, apron 20's positive fixedly connected with battery sign 21, the sealing of shell of can being convenient for, the leakproofness of shell has been improved, explosion-proof housing 1's inside is equipped with lithium cell 9, lithium cell 9's the left and right sides face respectively with two buffer board 11 a side fixed connection that are close to each other, lithium.

During the use, at first fix lithium cell 9 between backup pad 11, when the internal pressure and the heat of explosion-proof housing 1 are higher, pressure can promote sealing plug 15 on the slide bar 18, make sealing plug 15 slide, sealing plug 15 extrudees compression spring 17 simultaneously, treat that sealing plug 15 slides the junction department of pressure release pipe 14, pressure and heat will discharge through pressure release pipe 14, then discharge through pressure release hole 22 on the pressure release box 5, if the explosion takes place, the impact force will promote backup pad 11 and slide under the cooperation of spout 4 and slider 12, slow down a part of impact force, utilize ABS sheet material layer 3 to have stronger impact toughness, can guarantee the safety of battery.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an explosion-proof shell for lithium ion battery, includes explosion-proof shell (1), its characterized in that: the upper surface of the explosion-proof shell (1) and the bottom surface of the explosion-proof shell (1) are fixedly connected with pressure relief boxes (5), an ABS plate layer (3) is arranged inside the explosion-proof shell (1), symmetrical fixing plates (8) are arranged inside the explosion-proof shell (1), sliding grooves (4) are formed in one side face, close to each other, of the two fixing plates (8), two sliding blocks (12) matched with the sliding grooves (4) are clamped inside each sliding groove (4), symmetrical first springs (10) are fixedly connected to the inner side wall of the ABS plate layer (3), a buffer plate (11) is fixedly connected to one end, close to each other, of each first spring (10), the top end of each buffer plate (11) and the bottom end of each buffer plate (11) are fixedly connected to one side face, close to each other, of the two groups of sliding blocks (12) respectively, and a fixing seat (16) is fixedly connected to the inner wall of each pressure relief box (5), two equal fixedly connected with sealing tube (6) in a side that fixing base (16) are close to each other, every the equal fixedly connected with blotter (13) of inner wall of sealing tube (6), two equal fixedly connected with slide bar (18) in a side that blotter (13) are close to each other, every compression spring (17) have all been twined to the surface of slide bar (18), every the inside of sealing tube (6) all is equipped with sealing plug (15), through-hole (19) have all been seted up to the bottom surface of sealing plug (15), two the outside that through-hole (19) and extended to sealing tube (6) are all run through to a side that compression spring (17) are close to each other, every the left and right sides face of sealing tube (6) all fixed intercommunication has pressure relief pipe (14), two a side that sealing tube (6) are close to each other all runs through explosion-proof shell (1) in, The waterproof layer (2) and the ABS board layer (3) extend to the interior of the explosion-proof shell (1).

2. The explosion-proof housing for a lithium ion battery of claim 1, characterized in that: the inner wall of the explosion-proof shell (1) is fixedly connected with a waterproof layer (2), and the inner wall of the waterproof layer (2) is fixedly connected with the outer surface of the ABS board layer (3).

3. The explosion-proof housing for a lithium ion battery of claim 1, characterized in that: two the equal fixedly connected with symmetrical buffer spring (7) in a side that fixed plate (8) kept away from each other, every buffer spring (7) keep away from the one end of fixed plate (8) all with the inner wall fixed connection of ABS sheet material layer (3).

4. The explosion-proof housing for a lithium ion battery of claim 1, characterized in that: the front surface of the explosion-proof shell (1) is fixedly connected with a cover plate (20), and the front surface of the cover plate (20) is fixedly connected with a battery mark (21).

5. The explosion-proof housing for a lithium ion battery of claim 1, characterized in that: every pressure release hole (22) have all been seted up to the left and right sides face of pressure release box (5), the quantity of pressure release hole (22) is six at least.

6. The explosion-proof housing for a lithium ion battery of claim 1, characterized in that: the explosion-proof shell (1) is internally provided with a lithium battery (9), and the left side surface and the right side surface of the lithium battery (9) are fixedly connected with one side surface of the two buffer plates (11) which are close to each other respectively.