CN213752841U

CN213752841U - Aluminum-based alloy cover plate for preventing internal medium of power battery from leaking liquid

Info

Publication number: CN213752841U
Application number: CN202023253367.4U
Authority: CN
Inventors: 刘海涛
Original assignee: Jingjiang East Amperex Technology Ltd
Current assignee: Jingjiang East Amperex Technology Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-07-20
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses an aluminium base alloy apron of inside medium leak protection liquid of power battery, upper cover including ladder inner shell and ladder inner shell top opening part butt, ladder inner shell outside cover is equipped with the epitheca, the piston groove has been seted up in the vertical direction in the epitheca, intercommunication side channel has been seted up between piston groove and the epitheca inner wall, sliding connection has the piston piece in the piston groove, the threaded rod top runs through the upper cover and extends the end and firmly be equipped with the screw cap, epitheca top end edge department cover is equipped with the upper padding. The utility model discloses in, owing to adopt reverse screw thread to close locking structure soon, realized reducing the sealed in-process and appeared the possibility that each position elasticity degree changes and cause gas leakage weeping, owing to adopt negative pressure chamber to keep apart the leak protection structure again, the negative pressure chamber that has realized piston groove department on the one hand carries out the gas tightness isolated, on the other hand has realized reducing the ladder inner shell and has received the possibility that pressure produced the deformation gas leakage weeping that expands.

Description

Aluminum-based alloy cover plate for preventing internal medium of power battery from leaking liquid

Technical Field

The utility model relates to a battery case apron equipment technical field especially relates to an aluminium base alloy apron of power battery inside medium leak protection liquid.

Background

The power battery is a power supply for providing a power source for tools, and is a storage battery for providing power for electric automobiles, electric trains, electric bicycles and golf carts.

Power battery receives extensive use at present, however following some weak points appear in the use in current power battery sealed cover plate structure, and in the long-time use of power battery, internal pressure often can produce the change in the charge-discharge process for inside liquid appears leaking easily when pressure increases, thereby makes the life of battery descend, and battery weeping also causes the corruption to external equipment easily simultaneously.

Disclosure of Invention

The utility model aims to provide a: the aluminum-based alloy cover plate for preventing the leakage of the medium in the power battery is provided in order to solve the problem of leakage at the cover shell of the power battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an aluminium base alloy apron of inside medium leak protection liquid of power battery, includes the upper cover of ladder inner shell and ladder inner shell top opening part butt, ladder inner shell outside cover is equipped with the epitheca, the piston groove has been seted up in the vertical direction in the epitheca, intercommunication side groove has been seted up between piston groove and the epitheca inner wall, sliding connection has the piston piece in the piston groove, the piston piece top has set firmly the internal thread cover, the internal thread cover closes the upper threaded rod soon, the upper threaded rod top runs through the upper cover and extends the end and firmly be equipped with the screw cap, epitheca top inner edge department cover is equipped with the upper padding.

As a further description of the above technical solution:

the upper cover upper end has been seted up the ladder groove, the inside corner of ladder groove and screw cap horizontal end butt.

As a further description of the above technical solution:

the top end of the inner shell of the ladder is abutted to the upper cushion, and the top end of the upper cushion is abutted to the upper cover.

As a further description of the above technical solution:

the ladder inner shell outside is seted up and is run through the perpendicular groove at both ends from top to bottom, perpendicular inslot endotheca is equipped with lower threaded rod.

As a further description of the above technical solution:

the top end of the lower threaded rod penetrates through the lower end of the upper shell, and the extension end is connected with the inner wall of the upper shell in a threaded screwing mode.

As a further description of the above technical solution:

the outer fringe ladder corner cover of ladder inner shell is equipped with the piston pad, piston pad and epitheca and ladder inner shell level laminating department butt.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, adopt reverse screw thread to close locking structure soon, owing to adopted the epitheca that ladder inner shell outside cover was established, and close soon between threaded rod and the epitheca and be connected, owing to adopted the piston pad that ladder inner shell outside cover was established again, and the butt of clearance department between piston pad and ladder inner shell and the epitheca, owing to adopted the butt on upper pad and ladder inner shell top, realized sealed position between ladder inner shell and the epitheca and located the bottom, in order to reduce the sealed in-process each position elasticity degree that appears and change the possibility that causes gas leakage weeping.

2. The utility model discloses in, adopt the negative pressure chamber to keep apart leak protection structure, owing to adopted last threaded rod and the internal thread cover between close soon to be connected, and sliding connection between piston piece and the piston groove, again owing to adopted the intercommunication side channel to the intercommunication of piston groove and epitheca inner chamber, when having realized that the screw cap rotates and drives the piston piece and go up the slip, it produces the negative pressure to drive piston groove downside position, the negative pressure chamber of having realized piston groove department on the one hand carries out the gas tightness isolated, on the other hand has realized when producing the atmospheric pressure change and producing the inflation in the ladder inner shell, the resistance to compression is supplyed to the negative pressure this moment, reduce the ladder inner shell and receive the possibility that pressure produced the inflation deformation gas.

Drawings

Fig. 1 shows a schematic front view internal structure diagram provided according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram at a-a section provided according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a B-B cross section provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a stepped groove; 2. an upper pad; 3. an upper cover; 4. a screw cap; 5. a piston groove; 6. the side groove is communicated; 7. a vertical slot; 8. a piston pad; 9. a lower threaded rod; 10. a stepped inner shell; 11. a piston block; 12. an upper shell; 13. an upper threaded rod; 14. and an internal thread sleeve.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an aluminium base alloy apron of inside medium leak protection liquid of power battery, upper cover 3 including 10 and the 10 top end opening part butts of ladder inner shell 10 and ladder inner shell, 10 outside covers of ladder inner shell are equipped with epitheca 12, piston groove 5 has been seted up in 12 vertical directions in the epitheca, intercommunication side channel 6 has been seted up between piston groove 5 and the 12 inner walls of epitheca, sliding connection has piston block 11 in 5 piston groove, 11 tops of piston block have set firmly internal thread cover 14, threaded connection upper rod 13 is connected in 14 internal thread covers soon, 13 tops of upper thread rod run through upper cover 3 and extend the end and be equipped with screw cap 4 admittedly, 12 top inner edge department covers of epitheca are equipped with upper padding 2, make upper padding 2 locate to carry out the butt to ladder inner shell 10 and seal.

Specifically, as shown in fig. 1, stepped groove 1 has been seted up to upper cover 3 upper end, and the inside corner in stepped groove 1 and the 4 horizontal ends butt of screw cap to the embedded screw cap 4 of 1 department's inner chamber in stepped groove make 4 lower extremes of screw cap and upper cover 3 butt simultaneously.

Specifically, as shown in fig. 1, the top end of the inner stepped shell 10 abuts against the upper pad 2, and the top end of the upper pad 2 abuts against the upper cover 3, so that the upper pad 2 is tightly abutted and sealed by the upper cover 3.

Specifically, as shown in fig. 1, a vertical groove 7 penetrating through the upper end and the lower end is formed in the outer side of the ladder inner shell 10, a lower threaded rod 9 is sleeved in the vertical groove 7, the top end of the lower threaded rod 9 penetrates through the lower end of the upper shell 12, the extending end is connected with the inner wall of the upper shell 12 in a threaded manner, and the upper shell 12 and the ladder inner shell 10 are fixedly locked after the lower threaded rod 9 rotates.

Specifically, as shown in fig. 1, a piston pad 8 is sleeved at a step corner of the outer edge of the step inner shell 10, and the piston pad 8 abuts against the horizontal joint of the upper shell 12 and the step inner shell 10, so that the piston pad 8 is sealed and jointed with the upper shell 12 and the step inner shell 10.

The working principle is as follows: when the sealing device is used, firstly, the upper shell 12 sleeved outside the stepped inner shell 10 and the screwed connection between the lower threaded rod 9 and the upper shell 12 are adopted, then the piston pad 8 sleeved outside the stepped inner shell 10 and the butt joint of the piston pad 8 and the gap between the stepped inner shell 10 and the upper shell 12 are adopted, and meanwhile, the upper pad 2 and the butt joint of the top end of the stepped inner shell 10 are adopted, so that the sealing position between the stepped inner shell 10 and the upper shell 12 is arranged at the bottom end, and the possibility of air leakage and liquid leakage caused by the change of tightness degree of each position in the sealing process is reduced; secondly, through the screwing connection between the upper threaded rod 13 and the internal thread sleeve 14 and the sliding connection between the piston block 11 and the piston groove 5, the communication between the piston groove 5 and the inner cavity of the upper shell 12 is realized through the communication side groove 6, so that when the screw cap 4 rotates to drive the piston block 11 to slide upwards, the lower side part of the piston groove 5 is driven to generate negative pressure, on one hand, the negative pressure cavity at the position of the piston groove 5 is isolated in an air tightness manner, on the other hand, when the air pressure change generated in the stepped inner shell 10 generates expansion, the negative pressure is used for supplementing compression resistance, and the possibility that the stepped inner shell 10 generates expansion deformation air leakage and leakage due to the pressure is reduced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an aluminium base alloy apron of inside medium leak protection liquid of power battery, includes upper cover (3) of ladder inner shell (10) and ladder inner shell (10) top end opening part butt, its characterized in that, ladder inner shell (10) outside cover is equipped with epitheca (12), piston groove (5) have been seted up in epitheca (12) interior vertical direction, intercommunication side groove (6) have been seted up between piston groove (5) and epitheca (12) inner wall, sliding connection has piston block (11) in piston groove (5), piston block (11) top has set firmly interior thread bush (14), threaded bush (14) internal rotation is connected with upper threaded rod (13), upper threaded rod (13) top is run through upper cover (3) and is extended the end and is equipped with screw cap (4) admittedly, epitheca (12) top end endotheca department is equipped with upper pad (2).

2. The aluminum-based alloy cover plate for preventing leakage of internal media of a power battery as claimed in claim 1, wherein a stepped groove (1) is formed at the upper end of the upper cover (3), and the inner corner of the stepped groove (1) is abutted against the horizontal end of the screw cap (4).

3. The aluminum-based alloy cover plate for preventing the internal medium of the power battery from leaking liquid as claimed in claim 1, wherein the top end of the stepped inner shell (10) is abutted with the upper pad (2), and the top end of the upper pad (2) is abutted with the upper cover (3).

4. The aluminum-based alloy cover plate for preventing the internal medium of the power battery from leaking liquid as claimed in claim 1, wherein the outer side of the stepped inner shell (10) is provided with vertical grooves (7) penetrating through the upper and lower ends, and the vertical grooves (7) are internally sleeved with lower threaded rods (9).

5. The aluminum-based alloy cover plate for preventing the internal medium of the power battery from leaking liquid as claimed in claim 4, wherein the top end of the lower threaded rod (9) penetrates through the lower end of the upper shell (12), and the extending end is screwed with the inner wall of the upper shell (12).

6. The aluminum-based alloy cover plate for preventing the leakage of the internal medium of the power battery as claimed in claim 1, wherein a piston pad (8) is sleeved at the step corner of the outer edge of the step inner shell (10), and the piston pad (8) is abutted with the horizontal joint of the upper shell (12) and the step inner shell (10).