CN214409228U

CN214409228U - Electric core acupuncture test tool

Info

Publication number: CN214409228U
Application number: CN202120666191.0U
Authority: CN
Inventors: 刘新胜; 程小荣; 尹晓前; 董国宇; 陈素芬
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-10-15
Anticipated expiration: 2031-03-31

Abstract

The utility model provides an electricity core acupuncture test fixture, a acupuncture test for electric core, it includes test box and electric core splint subassembly, wherein, the test box has box and apron, and apron detachably connects on the box, and form airtight space in the test box because of the connection of apron, electric core splint subassembly links firmly in the bottom of apron through splint coupling assembling, and be located airtight space, electric core splint subassembly has two splint of mutual disposition, and connect a plurality of connecting pieces of two splint, and by the connection of connecting piece, can arrange electric core clamp in between two splint, in addition, be equipped with the acupuncture hole of wearing through splint coupling assembling and electric core splint subassembly in the lump on the apron, and be equipped with the mounting hole on box and/or apron, explosion-proof valve is installed to mounting hole department. The utility model discloses an under the state after electric core acupuncture test fixture can simulate electric core dress package to can carry out electric core acupuncture test under this state, and have better result of use.

Description

Electric core acupuncture test tool

Technical Field

The utility model relates to a battery test technical field, in particular to electricity core acupuncture test fixture.

Background

With the rapid development of electric vehicles, the market of electric vehicles in China has been increased at a high speed for a long time, and the safety of electric vehicles, especially the safety performance of power batteries, is facing a great challenge.

Generally, a power battery is composed of a plurality of lithium ion battery cores, which are mainly classified into an aluminum shell battery core, a soft package battery core (also called a polymer battery core) and a cylindrical battery core at present, wherein square and cylindrical shells mainly adopt hard shells of aluminum alloy, stainless steel and the like, and the soft package shell adopts an aluminum plastic film. Common safety tests of power batteries mainly include overcharge, overdischarge, extrusion, needling and the like, wherein the needling is also called the most severe safety test.

However, the existing battery core needling test only uses needling equipment to directly perform needling on the battery core or the battery core with the clamping plate, the test only can simulate the safety of the battery core under the condition of short circuit, the test data is only suitable for guiding the design and research of the single battery core, and the needling data of the battery core in the enclosed environment after being packaged cannot be measured, so that the battery core still needs to be subjected to needling test on the battery core in the battery package in the state of the battery package after being packaged, and whether the battery core meets the packaging requirement is judged. Therefore, not only is testing resources wasted, but also the research and development period of the battery cell is greatly prolonged.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to provide a method for simulating the state of an electrical core after being packaged, and performing an electrical core acupuncture test in this state.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides an electricity core acupuncture test fixture for the acupuncture test of electricity core, electricity core acupuncture test fixture includes:

the testing box is provided with a box body and a cover plate, the cover plate is detachably connected to the box body, and a closed space is formed in the testing box due to the connection of the cover plate;

the battery cell clamping plate assembly is fixedly connected to the bottom of the cover plate through a clamping plate connecting assembly and is positioned in the closed space, the battery cell clamping plate assembly is provided with two clamping plates which are oppositely arranged and a plurality of connecting pieces for connecting the two clamping plates, and the battery cell can be clamped between the two clamping plates through the connection of the connecting pieces;

the cover plate is provided with needle holes penetrating through the clamping plate connecting assembly and the battery cell clamping plate assembly, the box body and/or the cover plate are provided with mounting holes, and the mounting holes are provided with explosion-proof valves.

Furthermore, a sealing gasket is arranged between the cover plate and the box body.

Furthermore, the sealing gasket is made of silica gel.

Furthermore, the cover plate is connected to the box body through a cover plate locking screw.

Further, splint coupling assembling including link firmly in the splint connecting plate of apron bottom, electric core splint subassembly link firmly in on the splint connecting plate.

Furthermore, the splint connecting plate through the branch locate self both sides the lug with the apron meets, just the splint connecting plate through splint connecting plate locking screw connect in on the apron.

Furthermore, two the splint are relative upper plate and the lower plate of arranging from top to bottom, the upper plate link firmly in on the splint coupling assembling.

Further, the connecting piece comprises a bolt pair connected between the two clamping plates.

Furthermore, the opposite end surfaces of the two clamping plates are provided with accommodating grooves for partially accommodating the clamped battery cells.

Further, the mounting hole is located on a side wall of the box body.

Compared with the prior art, the utility model discloses following advantage has:

(1) electric core acupuncture test fixture, have the test box of box and apron through the setting to and be located the electric core splint subassembly in the airtight space of test box, can carry out the fixed effect of better centre gripping to electric core, and acupuncture hole and the explosion-proof valve through the setting, can simulate the state after electric core dress package, and can carry out electric core acupuncture test under this state, thereby can evaluate the security of electric core, and can save test resources, shorten electric core research and development cycle, and there is better practicality.

(2) The sealing gasket is favorable for improving the sealing property of the connection between the cover plate and the box body, and can ensure the safety of the test in the needling test process.

(3) The sealing gasket is made of silica gel materials, so that a better sealing effect is achieved between the cover plate and the box body, and better heat resistance is achieved.

(4) The cover plate is connected with the box body through the cover plate locking screw, and the box body is simple in structure and convenient to install.

(5) Two splint pass through the bolt pair with electric core centre gripping fixed, simple structure, and have better fixed effect.

(6) Set up the holding tank at two splint relative terminal surfaces, help improving the centre gripping effect of electric core.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a cell needling test fixture according to an embodiment of the present invention;

fig. 2 is a front view of a cell needling test fixture according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a top view of a cell needling test fixture according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 4;

description of reference numerals:

1. a box body; 2. a cover plate; 3. a splint connecting plate; 4. a splint; 5. an explosion-proof valve; 6. a connecting member; 7. a gasket; 10. cover plate locking screws; 100. an electric core; 201. punching holes; 401. an upper splint; 402. and (5) a lower splint.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a battery core acupuncture test fixture, a acupuncture test for electric core 100, as shown in fig. 1 to fig. 6, this battery core acupuncture test fixture is on whole constitution, mainly include test box and electric core splint subassembly, wherein, the test box has box 1 and apron 2, and apron 2 detachably connects on box 1, and form airtight space in the test box because of the connection of apron 2, electric core splint subassembly links firmly in the bottom of apron 2 through splint coupling assembling, and be located airtight space, this electric core splint subassembly has two splint 4 of mutual disposition, and connect a plurality of connecting pieces 6 of two splint 4, and by the connection of connecting piece 6, can arrange electric core 100 clamp in between two splint 4, in order to carry out the centre gripping fixedly to electric core 100.

In addition, a needle hole 201 penetrating through the clamping plate connecting assembly and the battery cell clamping plate assembly is formed in the cover plate 2, mounting holes are formed in the box body 1 and/or the cover plate 2, and an explosion-proof valve 5 is mounted at the mounting holes. Therefore, the electric core 100 to be tested can be conveniently needled by the needle through the needling holes 201. And through the explosion-proof valve 5 that sets up, can do benefit to and can make the equilibrium of airtight space internal gas pressure and external atmospheric pressure when the test, and can do benefit to the security that improves the test.

In the specific structure, as shown in fig. 1 to fig. 6, in order to improve the sealing effect of the testing box, in the present embodiment, a sealing gasket 7 is disposed between the cover plate 2 and the box body 1. Preferably, the sealing gasket 7 is made of silicone. Therefore, the cover plate 2 and the box body 1 have good sealing effect and good heat resistance.

It should be noted that the strength of the test box of the present embodiment is similar to the strength of the case of the battery pack, the enclosed space is similar to the space occupied by the plurality of battery cells 100 in the battery pack, and the above-mentioned explosion-proof valve 5 is an explosion-proof valve for the battery pack in the prior art, so as to provide an environment similar to the environment after the battery cells 100 are packed. The sealing gasket 7 arranged additionally can improve the sealing effect of the test box,

still referring to fig. 1 to 6, the cover plate 2 of the present embodiment is connected to the case 1 by a cover plate locking screw 10. The structure is simple, and the cover plate 2 and the box body 1 can have a better connecting effect. In addition, the splint coupling assembling of this embodiment is including linking firmly in the splint connecting plate 3 of 2 bottoms of apron, and electric core splint subassembly links firmly on splint connecting plate 3. Specifically, the splint connecting plate 3 is connected with the cover plate 2 through the convex blocks respectively arranged on both sides of the splint connecting plate, and the splint connecting plate 3 is connected to the cover plate 2 through the splint connecting plate locking screws.

It is shown in combination with fig. 3 and 5 and fig. 6 that splint connecting plate 3 of this embodiment includes the horizontal plate that sets up with 2 intervals of apron to and set up two lugs that are close to 2 one sides of apron on the horizontal plate, link firmly two lugs on apron 2 through splint connecting plate locking screw that not shown in the figure, in order to realize linking firmly of splint connecting plate 3 and apron 2, and electric core splint subassembly then links firmly on the horizontal plate through bolt or screw etc..

The cell clamping plate assembly of the present embodiment includes two clamping plates 4 arranged oppositely, and a plurality of connecting members 6 connecting the two clamping plates 4. Specifically, the two clamping plates 4 are an upper clamping plate 401 and a lower clamping plate 402 which are oppositely arranged up and down, and the upper clamping plate 401 is fixedly connected to the clamping plate connecting assembly, that is, the upper clamping plate 401 is fixedly connected to the horizontal plate. The connecting member 6 comprises a pair of bolts, preferably in this embodiment bolts and nuts, connected between the two clamping plates 4.

It can be understood that, in addition to the bolt pair with the bolt and the nut in the above-mentioned embodiment, the connecting member 6 of the present embodiment may also adopt a bolt and nut in a screwed fit or other connecting components, so that the two clamping plates 4 can clamp the battery cell 100 to be tested through the connection of the connecting member. Through the bolt pair that sets up, also be through screwing or loosening the nut, can realize pressing from both sides tightly and dismantling the electric core 100 that awaits measuring, this structure not only can have better centre gripping fixed effect to electric core 100, but also has simple structure dismouting of being convenient for, and convenient operation's advantage.

For further improving the clamping effect of the battery cell 100, the holding grooves for partially holding the clamped battery cells 100 are formed in the opposite end surfaces of the two clamping plates 4, so that the cylindrical battery cells 100 can be better clamped and fixed.

In addition, the mounting hole for mounting the explosion-proof valve 5 is provided on the box body 1 and/or the cover plate 2, it can be understood that the mounting hole may be provided on the box body 1 or the cover plate 2, of course, the mounting holes may also be provided on both the box body 1 and the cover plate 2, and at this time, the mounting number of the explosion-proof valve 5 needs to be correspondingly set. The present embodiment preferably provides the mounting hole on the side wall of the case 1.

This embodiment electricity core acupuncture test fixture, not only can carry out the fixed effect of better centre gripping to electric core 100, in order to do benefit to the acupuncture test of electric core 100, but also can simulate the state behind electric core 100 dress package, and can carry out electric core acupuncture test under this state, thereby can assess electric core 100's security, and do benefit to the design research and development that judges this electric core and satisfy the dress package demand, and can also save test resource, shorten electric core research and development cycle, there is better practicality simultaneously.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electric core acupuncture test fixture for acupuncture test of electric core (100), its characterized in that: electric core acupuncture test fixture includes:

the testing box is provided with a box body (1) and a cover plate (2), the cover plate (2) is detachably connected to the box body (1), and a closed space is formed in the testing box due to the connection of the cover plate (2);

the battery cell clamping plate assembly is fixedly connected to the bottom of the cover plate (2) through a clamping plate connecting assembly and is positioned in the closed space, the battery cell clamping plate assembly is provided with two clamping plates (4) which are oppositely arranged and a plurality of connecting pieces (6) for connecting the two clamping plates (4), and the battery cell (100) can be clamped between the two clamping plates (4) through the connection of the connecting pieces (6);

the battery box is characterized in that the cover plate (2) is provided with needle-punched holes (201) which penetrate through the clamping plate connecting assembly and the battery cell clamping plate assembly in the lump, the box body (1) and/or the cover plate (2) are provided with mounting holes, and the mounting holes are provided with explosion-proof valves (5).

2. The cell needling test tool according to claim 1, characterized in that: a sealing gasket (7) is arranged between the cover plate (2) and the box body (1).

3. The cell needling test tool according to claim 2, wherein: the sealing gasket (7) is made of silica gel.

4. The cell needling test tool according to claim 1, characterized in that: the cover plate (2) is connected to the box body (1) through a cover plate locking screw (10).

5. The cell needling test tool according to claim 1, characterized in that: the clamping plate connecting assembly comprises a clamping plate connecting plate (3) fixedly connected to the bottom of the cover plate (2), and the battery cell clamping plate assembly is fixedly connected to the clamping plate connecting plate (3).

6. The electric core acupuncture test tool of claim 5, characterized in that: the clamping plate connecting plate (3) is connected with the cover plate (2) through the convex blocks which are respectively arranged on two sides of the clamping plate connecting plate, and the clamping plate connecting plate (3) is connected with the cover plate (2) through clamping plate connecting plate locking screws.

7. The cell needling test tool according to claim 1, characterized in that: two splint (4) are upper plate (401) and lower plate (402) of relative arrangement from top to bottom, upper plate (401) link firmly in on the splint coupling assembling.

8. The cell needling test tool according to claim 1, characterized in that: the connecting piece (6) comprises a bolt pair connected between the two clamping plates (4).

9. The cell needling test tool according to claim 1, characterized in that: and the opposite end surfaces of the two clamping plates (4) are provided with accommodating grooves for partially accommodating the clamped battery cores (100).

10. The electric core acupuncture test tool of any one of claims 1 to 9, characterized in that: the mounting hole is positioned on the side wall of the box body (1).