CN210513552U

CN210513552U - Test plug of battery pack cooling system

Info

Publication number: CN210513552U
Application number: CN201921488433.0U
Authority: CN
Inventors: 张索峰
Original assignee: Ruichi New Energy Power System Wuhan Co Ltd
Current assignee: Ruichi New Energy Power System Wuhan Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-05-12
Anticipated expiration: 2029-09-05

Abstract

The application provides a test end cap of battery package cooling system. This test end cap includes: the top of the cylindrical base body is open, the bottom of the cylindrical base body is provided with a bottom plate, and the bottom plate is provided with a through hole; the movable piece is movably arranged relative to the cylindrical base body along the axial direction of the cylindrical base body and comprises a built-in section and an extended section which are connected, the built-in section is inserted into the cylindrical base body, the extended section extends out of the cylindrical base body through the through hole, the built-in section comprises a step surface, the extended section comprises a flange, and the movable piece is provided with a through hole for test fluid to pass through; the elastic piece is arranged in the cylindrical base body, one end of the elastic piece is abutted against the bottom plate, the other end of the elastic piece is abutted against the stepped surface, and the elastic piece drives the movable piece to move towards one side close to the opening; the flexible sleeve is sleeved on the extending section and arranged between the bottom plate and the flange, the flexible sleeve can be subjected to expansion deformation under the extrusion of the bottom plate and the flange and is used for sealing the opening of the battery pack cooling system, and test fluid can be introduced into the battery pack cooling system through the through hole.

Description

Test plug of battery pack cooling system

Technical Field

The application relates to the technical field of battery pack testing, in particular to a testing plug of a battery pack cooling system.

Background

After the battery pack is assembled, a manufacturer of the battery pack needs to test the air tightness of a cooling system in the battery pack so as to prevent leakage of a cooling medium in a later use process, so that the quality of the battery pack is poor and the safety of a product is poor.

SUMMERY OF THE UTILITY MODEL

The application provides a test end cap of battery package cooling system can detect the gas tightness of cooling system in the battery package, improves the security of battery package.

Specifically, the method is realized through the following technical scheme:

a test plug for a battery pack cooling system, comprising:

the top of the cylindrical base body is open, the bottom of the cylindrical base body is provided with a bottom plate, and the bottom plate is provided with a through hole;

the movable piece is movably arranged relative to the cylindrical base body along the axial direction of the cylindrical base body and comprises a built-in section and an extended section which are connected, the built-in section is inserted into the cylindrical base body, the extended section extends out of the cylindrical base body through the through hole, the built-in section comprises a step surface, the extended section comprises a flange, and the movable piece is provided with a through hole for test fluid to pass through;

the elastic piece is arranged in the cylindrical base body, one end of the elastic piece is abutted against the bottom plate, the other end of the elastic piece is abutted against the stepped surface, and the elastic piece drives the movable piece to move towards one side close to the opening;

and the flexible sleeve is sleeved on the overhanging section and arranged between the bottom plate and the flange, and is extruded between the bottom plate and the flange to generate expansion deformation in the stroke of the moving part moving to one side close to the opening, so as to seal the opening of the battery pack cooling system.

Optionally, the movable member includes a first portion and a second portion that are separately disposed, the first portion is detachably connected to the second portion, the first portion includes the built-in section, and the second portion includes the extended section.

Optionally, one of the first portion and the second portion includes a connection hole, the other includes a connection shaft, the connection hole includes an internal thread, the connection shaft includes an external thread, and the first portion and the second portion are detachably connected to the external thread through the internal thread.

Optionally, a ring-shaped recess is formed in a portion of the connecting shaft inserted into the connecting hole.

Optionally, the through hole includes a first through hole disposed in the built-in section and a second through hole disposed in a bottom end face of the overhanging section, and the second through hole is a hexagonal hole.

Optionally, the test end cap still includes the handle, the handle with cylindric base member swing joint, the handle has operating position and inoperative position the operating position department, the moving part is in under the elastic force effect of elastic component is to being close to uncovered one side removes inoperative position department, the handle overcomes the elastic force drive of elastic component the moving part is to keeping away from uncovered one side removes.

Optionally, the handle is rotatably connected to the cylindrical base.

Optionally, the testing plug further includes a first retaining ring and a second retaining ring sleeved on the overhanging section, the first retaining ring abuts against the bottom plate, the second retaining ring abuts against the flange, and the flexible sleeve abuts against between the first retaining ring and the second retaining ring.

The technical scheme provided by the application can achieve the following beneficial effects:

the application provides a battery package cooling system's test end cap, this end cap can be through the oral area of the expanded flexible sleeve sealing battery package cooling system after the compression on the one hand, and on the other hand can let in test fluid to battery package cooling system through the hole that passes through that inside set up, provides convenience for battery package cooling system's gas tightness test, provides the assurance for battery package's security.

Drawings

Fig. 1 is a cross-sectional view of a test plug of a battery pack cooling system according to an exemplary embodiment of the present application;

FIG. 2 is a cross-sectional view of a cylindrical substrate shown in an exemplary embodiment of the present application;

FIG. 3 is a cross-sectional view of a first portion of the moveable member shown in an exemplary embodiment of the present application;

FIG. 4 is a cross-sectional view of a second portion of the moveable member shown in an exemplary embodiment of the present application;

FIG. 5 is a schematic view of a test plug of a battery pack cooling system according to an exemplary embodiment of the present application;

FIG. 6 is a schematic view of the shaft of the barrel base shown in an exemplary embodiment of the present application in rotational engagement with the handle.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise specified, "front", "back", "lower" and/or "upper", "top", "bottom", and the like are for ease of description only and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Referring to fig. 1, fig. 1 shows a cross-sectional view of a test plug of a battery pack cooling system according to an exemplary embodiment of the present application.

The application provides a test end cap (hereinafter referred to as test end cap) of a battery pack cooling system, and the test end cap is used for being connected with an opening of the battery pack cooling system and providing convenience for air tightness detection of the battery pack cooling system. Generally, the battery pack cooling system comprises two openings, and the two openings can be respectively sealed by a first testing plug and a second testing plug during testing. The first testing plug is used for plugging one of the openings, the second testing plug is used for plugging the other opening, and on the other hand, testing fluid can be introduced into the battery pack cooling system through a through hole formed in the second testing plug so as to detect the air tightness of the cooling system. The test plug provided by the application can be used as a second test plug.

Specifically, referring to fig. 1 and 2, the testing plug includes a cylindrical base 10, a movable member 20, an elastic member 30, and a flexible sleeve 40. The cylindrical base body 10 is a hollow structure, the top of the cylindrical base body comprises an opening 100, the bottom of the cylindrical base body is provided with a bottom plate 101, and the bottom plate 101 is provided with a through hole 102.

The movable element 20 is movably disposed relative to the cylindrical substrate 10 along an axial direction of the cylindrical substrate 10, and the movable element 20 includes an inner section 21 and an outer section 22 connected to each other, wherein the inner section 21 is inserted into the cylindrical substrate 10 and includes a stepped surface 210. The overhanging portion 22 protrudes outside the cylindrical base body 10 through the through hole 102, and the overhanging portion 22 includes a flange 220.

The elastic member 30 is disposed in the cylindrical base 10, one end of the elastic member abuts against the bottom plate 101, and the other end of the elastic member abuts against the stepped surface 210, so that the movable member 20 can be driven to move toward the side close to the opening 100 by the elastic force of the elastic member 30.

The flexible sleeve 40 is sleeved on the overhanging section 22 and disposed between the bottom plate 102 and the flange 220, and during a stroke of the moving member 20 moving to a side close to the opening 100, the flexible sleeve 40 is pressed between the bottom plate 101 and the flange 220, and under the action of the pressing force, the flexible sleeve 40 expands and deforms, and at this time, the flexible sleeve 40 can be used for sealing a mouth of the battery pack cooling system. The flexible sleeve 40 may be, but is not limited to, nitrile rubber.

In the example shown in fig. 1, the overhanging section 22 is further sleeved with a first retainer ring 50 and a second retainer ring 60, wherein the first retainer ring 50 abuts against the base plate 101, the second retainer ring 60 abuts against the flange 220, and the flexible sleeve 40 abuts between the first retainer ring 50 and the second retainer ring 60. When the moveable member 20 moves upward, the flexible sleeve 40 is subjected to compressive forces from the first and second retaining rings 50, 60. By arranging the first retainer ring 50 and the second retainer ring 60 to contact the flexible sleeve 40, damage to the cylindrical base 10 and the movable element 20 when the flexible sleeve 40 is pressed by the base can be reduced, thereby reducing maintenance cost.

The moving part 20 is further provided with a through hole 201 for passing the test fluid, the through hole 201 comprises a first through port 201a and a second through port 201b, and the first through port 201a is provided on the side wall of the built-in section 21 for connecting with the test mechanism for the test fluid to enter. The second through-opening 201b is opened in the bottom end face of the overhanging section 22, and the test fluid entering through the through-opening 201 flows into the battery pack cooling system. In one example, the second through opening 201b is a hexagonal hole, which can facilitate the engagement with a tool having a hexagonal head, thereby facilitating the detachment of the first and

second parts

20a and 20 b.

Referring to fig. 3 and 4, in an example, the movable member 20 includes a first portion 20a and a second portion 20b that are separately disposed, and the first portion 20a is detachably connected to the second portion 20b, wherein the first portion 20a includes an inner section 21, and the second portion 20b includes an outer section 22, and the inner section and the outer section jointly penetrate through the first portion 20a and the second portion 20b through a hole 201. It can be seen that the first and

second parts

20a, 20b, which are separately provided, can be easily assembled and, when a part of them is damaged, can be easily repaired and replaced.

In an alternative example, the first portion 20a includes a connection hole 200a, the connection hole 200a includes an internal thread, the second portion 20b includes a connection shaft 200b, the connection shaft 200b includes an external thread, and the first portion 20a and the second portion 20b are detachably connected through the internal thread and the external thread, which is simple and reliable. At this time, the connection hole 200a may be regarded as a part of the through hole 201.

Of course, in other examples, embodiments may also be employed in which the first portion 20a includes external threads and the second portion 20b includes internal threads.

Referring to fig. 1 and 4, the portion of the connecting shaft 200b inserted into the connecting hole 200a further includes an annular recess 200bb, and the annular recess 200bb can reduce the length of the second portion 20b fitted to the inner wall of the connecting hole 200a, thereby reducing the manufacturing accuracy of the inner wall of the connecting hole 200 a.

Referring to fig. 1 and 5, the testing plug further includes a handle 70, the handle 70 is rotatably connected to the cylindrical base 10, the handle 70 has a working position and a non-working position, in the working position, the handle 70 is bent to one side to form an included angle with the movable member 20, at this time, the movable member 20 moves to one side close to the opening 100 under the elastic force of the elastic member 30, and the flexible sleeve 40 expands and deforms under pressure to seal the mouth of the battery pack cooling system. In the non-working position, the handle 70 and the movable member 20 extend in the same direction, at this time, the handle 70 overcomes the elastic force of the elastic member 30 to drive the movable member 20 to move to the side away from the opening 100, at this time, the extrusion force of the flexible sleeve 40 disappears, and the flexible sleeve 40 recovers the original shape to release the sealing with the battery pack cooling system.

In the example of fig. 1 and 5, the handle 70 is in a rotational connection with the cylindrical base 10, however, it should be understood that the connection of the handle 70 with the cylindrical base 10 is not limited to a rotational connection.

For example, in other examples, the handle 70 may be slidably connected to the cylindrical base 10, and the cylindrical base 10 has a slide slot extending in a vertical direction, and the handle 70 moves up or down along the slide slot. When the handle 70 is moved upwards, the movable member 20 can move towards the side close to the opening 100 under the elastic force of the elastic member 30, and the flexible sleeve 40 is expanded and deformed under the pressure, thereby sealing the mouth of the battery pack cooling system. When the handle 70 is moved downwards, the handle 70 overcomes the elastic force of the elastic member 30 to drive the movable member 20 to move towards the side away from the opening 100, at this time, the extrusion force of the flexible sleeve 40 disappears, the flexible sleeve 40 recovers to the original shape, and the sealing with the battery pack cooling system is released.

Referring to fig. 5 and 6, the cylindrical base 10 is provided with a through hole for the rotation shaft 80 to pass through, and the handle 70 rotates around the rotation shaft 80, so that the movable member 20 can be triggered to generate a moving stroke. The rotating shaft 80 is arranged to be of a T-shaped structure, the small end of the rotating shaft is provided with a locking hole 800, and when the rotating shaft 80 penetrates into the through hole of the cylindrical base body 10 from the small end, the rotating shaft can be clamped in the locking hole 800 through the clamping pin, so that the rotating shaft 80 is prevented from falling off. The shape of the click pin is not limited, and is preferably highly reliable.

In addition, referring to fig. 2 and 5, in order to avoid interference, the sidewall of the cylindrical base 10 is provided with a first notch 103 and a second notch 104, and the first notch 103 is used for increasing the movement space of the handle 70 and giving way for the rotation of the handle 70. The second notch 104 is used to provide a space for the connection of the first through opening 201a with an external testing mechanism.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A test plug for a battery pack cooling system, comprising:

the elastic piece is arranged in the cylindrical base body, one end of the elastic piece is abutted against the bottom plate, the other end of the elastic piece is abutted against the stepped surface, and the elastic piece is used for driving the moving piece to move towards one side close to the opening;

2. The test plug for a battery pack cooling system according to claim 1, wherein the movable member comprises a first portion and a second portion which are separately arranged, the first portion is detachably connected with the second portion, the first portion comprises the built-in section, and the second portion comprises the protruding section.

3. The test plug for a battery pack cooling system according to claim 2, wherein one of the first portion and the second portion includes a connection hole, the other includes a connection shaft, the connection hole includes an internal thread, the connection shaft includes an external thread, and the first portion and the second portion are detachably connected to the external thread through the internal thread.

4. The test plug for the battery pack cooling system according to claim 3, wherein a portion of the connecting shaft inserted into the connecting hole is provided with an annular recess.

5. The test plug for a battery pack cooling system according to claim 1, wherein the through hole comprises a first through hole provided in the inner section and a second through hole provided in a bottom end surface of the outer section, and the second through hole is a hexagonal hole.

6. The test plug for a battery pack cooling system according to claim 1, further comprising a handle movably connected to the cylindrical base, wherein the handle has an operating position where the movable member moves toward a side close to the opening under the elastic force of the elastic member and a non-operating position where the handle drives the movable member to move toward a side away from the opening against the elastic force of the elastic member.

7. The test plug for a battery pack cooling system as in claim 6, wherein the handle is rotatably coupled to the cylindrical base.

8. The testing plug for the battery pack cooling system according to claim 1, further comprising a first retaining ring and a second retaining ring sleeved on the overhanging section, wherein the first retaining ring abuts against the bottom plate, the second retaining ring abuts against the flange, and the flexible sleeve abuts between the first retaining ring and the second retaining ring.