CN217009407U

CN217009407U - Anti-cracking battery case with good compression resistance

Info

Publication number: CN217009407U
Application number: CN202121964805.XU
Authority: CN
Inventors: 陈铭辉; 黄爱福; 曹伟
Original assignee: Quanzhou Huatuo Plastic Hardware Co ltd
Current assignee: Quanzhou Huatuo Plastic Hardware Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-07-19
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a rupture-proof battery case with good compression resistance, which comprises a first case, a second case and a third case, wherein the top end of the first case is sleeved with the second case which is jointed with the first case, the bottom end of the second case is sleeved with the third case which is jointed with the second case, the side walls of the first case and the second case are respectively provided with a first exhaust hole and a second exhaust hole, the side wall of the first case horizontally extends outwards to form a convex block, the side walls of the second case and the third case at two sides are respectively provided with a first notch and a second notch, the inner wall of the second case is embedded with a first sealing gasket which is fixedly bonded with the second case, the inner wall of the third case is embedded with a second sealing gasket which is fixedly bonded with the third case, and the inner wall of the bottom end of the third case is fixedly connected with the outer wall of the bottom end of the first case through a bolt. This anti-rupture battery case that compressive capacity is good can avoid the casing inflation and break, has improved holistic life effectively, and overall security is high moreover, and the practicality is strong.

Description

Anti-cracking battery case with good compression resistance

Technical Field

The utility model relates to the technical field of batteries, in particular to a rupture-proof battery shell with good pressure resistance.

Background

Present lithium cell is in order to improve the security, the shell all adopts the high strength material, nevertheless when suffering external impact, there is not buffer structure, after suffering impact many times like this, the shell is fragile, when the lithium cell uses simultaneously, inside temperature can constantly rise, and then lead to the internal pressure increase, make the casing take place to expand and break, not only reduced battery life, and there is the potential safety hazard, the practicality is not strong, can not satisfy people's user demand, in view of the defect that exists among the above prior art, it is necessary to improve it further, make it more possess the practicality, just can accord with the in-service use condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rupture-proof battery shell with good pressure resistance, which aims to solve the problems that the shell provided in the background art is easy to rupture, the service life of the battery is shortened, potential safety hazards exist and the practicability is not strong.

In order to achieve the purpose, the utility model provides the following technical scheme: a rupture-proof battery case with good compression resistance comprises a first case, a second case and a third case, wherein the top end of the first case is sleeved with the second case which is jointed with the first case, the bottom end of the second case is sleeved with the third case which is jointed with the second case, the side walls of the first case and the second case are respectively provided with a first exhaust hole and a second exhaust hole, the side wall of the first case horizontally extends outwards to form a convex block, the side walls of the second case and the third case at two sides are respectively provided with a first notch and a second notch, the inner wall of the second case is embedded with a first sealing gasket which is fixedly bonded with the second case, the inner wall of the third case is embedded with a second sealing gasket which is fixedly bonded with the third case, the inner wall of the bottom end of the third case is fixedly connected with the outer wall of the bottom end of the first case through a bolt, and the inner wall of the second exhaust hole is in threaded sealing connection with the air inlet end of a one-way air valve, and the one-way air valve is positioned in the second notch, the lug extends into the first notch, a telescopic pull rod is arranged in the first notch, an elastic spring is sleeved on the telescopic pull rod, the two ends of the telescopic pull rod are fixedly connected with the inner wall of the first notch and the lug through bolts, and the two ends of the elastic spring are fixedly bonded with the inner wall of the first notch and the lug.

Furthermore, the thickness of the wall body of the third shell is larger than the integral length of the one-way air valve, and the third shell, the first shell and the second shell are all made of polypropylene plastic materials.

Furthermore, the first exhaust hole and the second exhaust hole are symmetrically arranged in two numbers, and the first exhaust hole and the second exhaust hole are positioned on the same vertical plane and are not coaxial with the axis.

Furthermore, the first sealing gasket and the second sealing gasket are both rectangular frame-shaped structures and are made of polytetrafluoroethylene materials, the first sealing gasket and the first exhaust hole are located on the same horizontal plane, the first sealing gasket is attached to the outer wall of the first shell, and the second sealing gasket is attached to the outer wall of the second shell.

Furthermore, the first notch and the second notch are integrally in a right-angle U-shaped structure, and the first notch is attached to the bump and is not fixed.

Compared with the prior art, the utility model has the beneficial effects that: the anti-cracking battery case with good compression resistance is composed of a first case, a second case and a third case, when the battery case is impacted, the second case can vertically move downwards in the first case and the third case, and when the battery case moves, an elastic spring can be stretched, so that the impact force can be buffered through the elasticity of the elastic spring, the integral compression resistance is improved, and cracking is avoided;

when the casing internal pressure increases simultaneously, the vertical rebound of second casing can be in first casing and third casing to make first exhaust hole and second exhaust hole align, the gas in the casing can discharge fast like this, thereby avoid the casing inflation and break, improved holistic life effectively, overall security is high moreover, and the practicality is strong.

Drawings

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

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1 according to the present invention;

FIG. 3 is a side view of the first and second housings of the present invention;

fig. 4 is a side view of the second and third housings of the present invention.

In the figure: 1. a first housing; 2. a second housing; 3. a third housing; 4. a first exhaust port; 5. a second vent hole; 6. a first sealing gasket; 7. a second sealing gasket; 8. a first notch; 9. a second recess; 10. a one-way air valve; 11. a bump; 12. a telescopic pull rod; 13. an elastic spring.

Detailed Description

The drawings in the embodiments of the utility model will be incorporated below; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the utility model; rather than all embodiments. Based on the embodiments of the utility model; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a rupture-proof battery case with good compression resistance comprises a first case 1, a second case 2 and a third case 3, wherein the top end of the first case 1 is sleeved with the second case 2 jointed with the first case, the bottom end of the second case 2 is sleeved with the third case 3 jointed with the second case, the side walls of the first case 1 and the second case 2 are respectively provided with a first exhaust hole 4 and a second exhaust hole 5, the side wall of the first case 1 extends horizontally outwards to form a convex block 11, the side walls of the second case 2 and the third case 3 are respectively provided with a first notch 8 and a second notch 9, the inner wall of the second case 2 is embedded with a first sealing gasket 6 fixedly bonded with the second case 2, the inner wall of the third case 3 is embedded with a second sealing gasket 7 fixedly bonded with the third case 3, the inner wall of the bottom end of the third case 3 is fixedly connected with the outer wall of the bottom end of the first case 1 through a bolt, the inner wall of the second exhaust hole 5 is hermetically connected with the air inlet end of a one-way air valve 10 through a thread, the one-way air valve 10 is located in the second notch 9, the bump 11 extends into the first notch 8, the telescopic pull rod 12 is arranged in the first notch 8, the elastic spring 13 is sleeved on the telescopic pull rod 12, two ends of the telescopic pull rod 12 are fixedly connected with the inner wall of the first notch 8 and the bump 11 through bolts, and two ends of the elastic spring 13 are fixedly bonded with the inner wall of the first notch 8 and the bump 11.

Further, 3 wall body thicknesses of third casing are greater than the whole length of one-way pneumatic valve 10, and third casing 3, first casing 1 and second casing 2 are the polypropylene plastics material, and 3 wall body designs of third casing for one-way pneumatic valve 10 can not bump with the external world, thereby avoids one-way pneumatic valve 10 to damage, adopts the polypropylene plastics material simultaneously, has improved holistic intensity, very big reinforcing holistic crushing resistance, excellent in use effect.

Furthermore, the first exhaust hole 4 and the second exhaust hole 5 are symmetrically arranged in two, the first exhaust hole 4 and the second exhaust hole 5 are located on the same vertical plane and are not coaxial, the first exhaust hole 4 and the second exhaust hole 5 have a height difference, the height difference is consistent with the maximum deformation of the elastic spring 13, when the internal pressure of the battery case is increased, the second case 2 is forced to move upwards, and the second exhaust hole 5 on the second case 2 after moving can be aligned with the first exhaust hole 4, so that the gas in the battery case can be rapidly exhausted.

Further, first seal gasket 6 and second seal gasket 7 all are rectangle frame column structure, and both are the polytetrafluoroethylene material, first seal gasket 6 is in same horizontal plane with first exhaust hole 4, and first seal gasket 6 and the laminating of 1 outer wall of first casing, the laminating of 2 outer walls of second seal gasket 7 and second casing, first seal gasket 6 and second seal gasket 7's setting, can improve first casing 1, the leakproofness between second casing 2 and the third casing 3, thereby make the internal work environment stable, the battery can normal operating has been guaranteed.

Further, first notch 8 and second notch 9 are whole all to be right angle "U" type structure, and first notch 8 laminates with lug 11 mutually and is not fixed, lug 11 plays limiting displacement, at the flexible pull rod 12 of cooperation, make second casing 2 can only be along 11 vertical movements of lug through first notch 8, second casing 2 is when removing like this, not only can cushion ambient pressure, and can cushion internal pressure, the casing has been protected effectively and has not been damaged, the service life of battery has been improved.

The working principle is as follows: when the second shell 2 is subjected to external pressure, the second shell 2 can descend between the first shell 1 and the third shell 3, and the elastic spring 13 is stretched when the second shell 2 descends, so that the impact of the external pressure on the second shell 2 can be reduced through the buffer action of the elastic spring 13, and the second shell 2 is prevented from being crushed;

when the internal pressure of the first shell 1 is increased, the second shell 2 can move upwards between the first shell 1 and the third shell 3, and when the internal pressure of the first shell 1 is increased, the elastic spring 13 is compressed, so that the second shell 2 is prevented from expanding and breaking through the buffering effect of the elastic spring 13, and when the second shell 2 and the first exhaust hole 4 and the second exhaust hole 5 on the first shell 1 are aligned, the gas in the first shell 1 can be exhausted through the one-way gas valve 10.

While embodiments of the utility model have been shown and described; to one of ordinary skill in the art; it will be appreciated that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model; the scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a good anti-rupture battery case of compressive capacity, includes first casing (1), second casing (2) and third casing (3), its characterized in that: the top end of the first shell (1) is sleeved with a second shell (2) which is attached to the first shell, the bottom end of the second shell (2) is sleeved with a third shell (3) which is attached to the second shell, the side walls of the first shell (1) and the second shell (2) are respectively provided with a first exhaust hole (4) and a second exhaust hole (5), the side wall of the first shell (1) horizontally extends outwards to form a convex block (11), the side walls of the two sides of the second shell (2) and the third shell (3) are respectively provided with a first notch (8) and a second notch (9), the inner wall of the second shell (2) is embedded with a first sealing gasket (6) which is fixedly bonded with the second shell, the inner wall of the third shell (3) is embedded with a second sealing gasket (7) which is fixedly bonded with the third shell, and the inner wall of the bottom end of the third shell (3) is fixedly connected with the outer wall of the bottom end of the first shell (1) through bolts, second exhaust hole (5) inner wall and one-way pneumatic valve (10) inlet end thread sealing connection, and one-way pneumatic valve (10) are located second notch (9), lug (11) extend to in first notch (8), and are provided with flexible pull rod (12) in first notch (8), the cover has elasticity spring (13) on flexible pull rod (12), and is bolt fixed connection between flexible pull rod (12) both ends and first notch (8) inner wall and lug (11), be fixed bonding between elasticity spring (13) both ends and first notch (8) inner wall and lug (11).

2. The rupture-proof battery case with good pressure resistance as claimed in claim 1, wherein: the thickness of the wall body of the third shell (3) is larger than the whole length of the one-way air valve (10), and the third shell (3), the first shell (1) and the second shell (2) are all made of polypropylene plastic materials.

3. The rupture-proof battery case with good pressure resistance as claimed in claim 1, wherein: the first exhaust hole (4) and the second exhaust hole (5) are symmetrically arranged in two, the first exhaust hole (4) and the second exhaust hole (5) are located on the same vertical plane, and the first exhaust hole and the second exhaust hole are not coaxial.

4. The rupture-proof battery case with good pressure resistance as claimed in claim 1, wherein: the first sealing gasket (6) and the second sealing gasket (7) are both of rectangular frame-shaped structures and are made of polytetrafluoroethylene materials, the first sealing gasket (6) and the first exhaust hole (4) are located on the same horizontal plane, the first sealing gasket (6) is attached to the outer wall of the first shell (1), and the second sealing gasket (7) is attached to the outer wall of the second shell (2).

5. The rupture-proof battery case with good pressure resistance as claimed in claim 1, wherein: the first notch (8) and the second notch (9) are integrally in a right-angle U-shaped structure, and the first notch (8) is attached to the lug (11) and is not fixed.