CN218674007U

CN218674007U - Test tool for simulating locking force of shell bolt on battery pack

Info

Publication number: CN218674007U
Application number: CN202223155313.3U
Authority: CN
Inventors: 张力久
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-21
Anticipated expiration: 2032-11-25

Abstract

The utility model provides a test tool for simulating the bolt locking force of a shell on a battery pack, which comprises a base, a driving part and a pressing component, wherein the base is provided with an upper shell; the pressing assembly is provided with elastic pressing pieces which correspond to the flange holes in the upper shell one by one, and under the driving of the driving part, the elastic pressing pieces can descend and elastically press the corresponding flange holes. Simulation battery package go up test fixture of casing bolt locking force, can simulate the locking force that the casing produced when tightening the bolt through forming elastic pressing force, test in advance and discern the casing fracture condition, and compare in the test mode through bolt locking, still can avoid going up the casing and split in the testing process, reduce the casing damage risk, simultaneously, also can promote efficiency of software testing, and effectively promote this test fixture's result of use.

Description

Test tool for simulating locking force of bolt of upper shell of battery pack

Technical Field

The utility model relates to a battery package technical field, in particular to test fixture of casing bolt locking force on simulation battery package.

Background

With the continuous development of new energy automobile technology, the quality requirement of consumers on new energy automobiles is higher and higher, and the battery pack is used as an important part of the new energy automobiles, and the improvement of the quality of the battery pack is an important part for improving the quality of the automobiles.

At present, an upper shell of a battery pack is often made of SMC (Sheet molding compound) materials to achieve the advantages of light weight and low cost, but the SMC is a brittle material, microcracks often appear on the surface of the upper shell of the battery pack when a bolt is tightened, and in order to prevent cracking when the battery pack is installed, the cracking condition of the upper shell needs to be identified and verified in advance when the upper shell of the SMC is produced.

Among the prior art, generally adopt bolt and gasket to wrap casing and last casing locking under the former dress battery, verify the casing condition of ftractureing, this kind of scheme is verified inefficiency, with high costs, and need often change down the casing, and the casing still can be damaged to the misoperation, is difficult to satisfy and produces the line preparation demand.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a test fixture of casing bolt locking force on simulation battery package to can promote efficiency of software testing, simultaneously, reduce the risk that causes the damage to last casing.

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

a test tool for simulating the locking force of a bolt of an upper shell of a battery pack comprises a base, a driving part and a pressing assembly, wherein the base is provided with the upper shell, the driving part is arranged on the base and is spaced from the upper shell, and the pressing assembly is driven by the driving part and can lift along the height direction of the base;

the pressing component is provided with elastic pressing pieces which are in one-to-one correspondence with the flange holes in the upper shell, and under the driving of the driving part, the elastic pressing pieces can descend and elastically press the corresponding flange holes.

Furthermore, the pressing assembly comprises a support frame connected with the driving end of the driving part, and each elastic pressing piece is arranged on the support frame.

Furthermore, the elastic pressing part comprises a guide rod arranged on the support frame, a pressing sliding sleeve arranged on the guide rod in a sliding manner, and an elastic part arranged between the guide rod and the pressing sliding sleeve, and the guide rod is arranged along the height direction of the base; when the driving part drives the support frame to descend, the guide rod can be inserted into the corresponding flange hole, and the compression sliding sleeve can abut against the peripheral area of the flange hole.

Furthermore, the guide rod is provided with a limiting part, the compression sliding sleeve is provided with a limiting matching part, and the elastic part is arranged between the limiting part and the limiting matching part.

Furthermore, the compressing sliding sleeve is provided with a butt bulge arranged along the circumferential direction of the compressing sliding sleeve, and the butt bulge is positioned at one end of the peripheral area of the flange hole and abutted against the compressing sliding sleeve.

Further, one end of the guide rod inserted into the flange hole is provided with a guide portion capable of guiding the guide rod to be inserted into the flange hole.

Furthermore, the base is provided with a support rod arranged along the height direction of the base, the top of the support rod is provided with a top plate, and the driving part is arranged on the top plate.

Furthermore, the driving part is connected with the supporting frame through a pushing plate.

Furthermore, the pushing plate is arranged on the supporting rod in a sliding mode.

Furthermore, a shell placing table is arranged on the base, and through holes which are arranged in one-to-one correspondence with the flange holes are formed in the shell placing table.

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

simulation battery package go up test fixture of casing bolt locking force, order about through the drive division and compress tightly each flange hole department that subassembly elasticity compressed tightly the casing on the battery package, can form the locking force that elasticity packing force produced when tightening the bolt in simulating the casing, can test in advance and discern the casing fracture condition, and compare in the test mode through bolt locking, still can avoid going up the casing and split in the testing process, casing damage risk on the reduction, and simultaneously, it compresses tightly the piece to set up a plurality of elasticity, also can with flange hole one-to-one, promote efficiency of software testing, and can promote this test fixture's result of use.

In addition, the support frame is favorable for simultaneously operating a plurality of elastic pressing pieces, and is reasonable in arrangement and easy to realize. And the cooperation of guide bar, pressure sliding sleeve and elastic component is used, and is rational in infrastructure to can be after pressure sliding sleeve butt flange hole peripheral zone, the support frame drives the guide bar and continues to descend, and guide bar accessible elastic component makes pressure sliding sleeve continue to exert pressure to the peripheral zone in flange hole, in order to simulate out the packing force with the locking force looks adaptation of bolt.

Meanwhile, the limiting part and the limiting matching part are arranged, the limiting part can be driven by the guide rod, the limiting part pushes the limiting matching part through the elastic piece, and the limiting matching part drives the pressing sliding sleeve to press the periphery of the flange hole. And set up the butt arch, can do benefit to the locking force that the gasket was applyed to flange hole periphery region when simulation bolt locking. The setting of guide portion then does benefit to the convenience that promotes the guide bar and insert in the flange hole.

In addition, the setting of catch plate is convenient for compress tightly the dismouting of subassembly, and the catch plate is located on the bracing piece, can promote the sliding stability of catch plate. And the setting of via hole does benefit to the guide bar and inserts the flange hole after, continues to insert in the via hole to make the guide bar can drive the sliding sleeve that compresses tightly through spacing portion and elastic component and continue to apply the packing force, adjust the packing force to the locking force assorted degree with the bolt at last, and have better simulation effect.

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 view of an overall structure of a test fixture for simulating a locking force of a shell bolt on a battery pack according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic view of a part of a structure of a test fixture for simulating a locking force of a bolt of a shell on a battery pack according to an embodiment of the present invention;

FIG. 4 is a partial enlargement at B of FIG. 3;

description of reference numerals:

1. a base; 2. a drive section; 3. an upper housing; 4. an elastic pressing member; 5. a support frame; 6. a push plate;

101. a support bar; 102. a top plate; 103. a housing placement table;

301. a flange hole;

401. a guide bar; 4011. a limiting part; 4012. a guide section; 402. compressing the sliding sleeve; 4021. a limit matching part; 4022. an abutment projection; 403. an elastic member.

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 test fixture for simulating locking force of a bolt of a shell on a battery pack, which can simulate locking force generated by the shell 3 when the bolt is tightened by forming elastic pressing force, test and identify the cracking condition of the shell 3 in advance, and can avoid cracking of the shell 3 in the test process, reduce damage risk of the shell 3 and improve test efficiency compared with a test mode of locking the bolt.

Overall structure, as shown in fig. 1 to 4, the test fixture for simulating the locking force of the upper shell bolt of the battery pack of the embodiment includes a base 1 on which an upper shell 3 is placed, a driving part 2 arranged on the base 1 at an interval with the upper shell 3, and a pressing component driven by the driving part 2 and capable of lifting along the height direction of the base 1.

The pressing component is provided with elastic pressing pieces 4 which are in one-to-one correspondence with the flange holes 301 in the upper shell 3, and under the driving of the driving part 2, the elastic pressing pieces 4 can descend and elastically press the corresponding flange holes 301.

It is worth mentioning that the specific structure of the upper case 3 of the present embodiment can refer to a conventional upper case product of a battery pack, which generally has a case body and a flange edge disposed on the case body for connecting with a lower case of the battery pack, and the flange holes 301 are sequentially arranged at intervals on the flange edge.

Based on the above overall description, in this embodiment, as a preferred implementation manner, as shown in fig. 1 and fig. 3, the pressing assembly includes a supporting frame 5 connected to the driving end of the driving portion 2, and each elastic pressing member 4 is disposed on the supporting frame 5, so as to facilitate simultaneous operation of the plurality of elastic pressing members 4, and the arrangement is reasonable and easy to implement.

When specifically configured, in a preferred embodiment, as shown in fig. 2, the elastic pressing member 4 of the present embodiment includes a guide rod 401 disposed on the support frame 5, a pressing sliding sleeve 402 slidably disposed on the guide rod 401, and an elastic member 403 disposed between the guide rod 401 and the pressing sliding sleeve 402, wherein the guide rod 401 is disposed along the height direction of the base 1. When the driving part 2 drives the support frame 5 to descend, the guide rods 401 can be inserted into the corresponding flange holes 301, and the pressing sliding sleeves 402 can abut against the peripheral areas of the flange holes 301.

So set up, rational in infrastructure, and can compress tightly sliding sleeve 402 butt flange hole 301 peripheral region after, support frame 5 drives guide bar 401 and continues to descend, and guide bar 401 accessible elastic component 403 makes and compresses tightly sliding sleeve 402 and continue to exert pressure to flange hole 301's peripheral region to simulate the packing force with the locking force looks adaptation of bolt.

Referring to fig. 2 and 4, in this embodiment, in a preferred embodiment, a limiting portion 4011 is disposed on the guide rod 401, a limiting matching portion 4021 is disposed on the pressing sliding sleeve 402, and the elastic member 403 is disposed between the limiting portion 4011 and the limiting matching portion 4021, so that the guide rod 401 drives the limiting portion 4011 to drive, the limiting portion 4011 drives the limiting matching portion 4021 through the elastic member 403, and the limiting matching portion 4021 drives the pressing sliding sleeve 402 to press down the periphery of the flange hole 301.

It should be noted that the elastic member 403 is preferably made of a common spring product, which is simple in structure, low in cost and easy to implement. The compression sleeve 402 described above can also be referred to conventional sleeve products. In addition, for improving the installation stability of the spring, the limiting portion 4011 can be set as a limiting plate sleeved on the guide rod 401, the limiting matching portion 4021 is set as an annular groove arranged at one end of the pressing sliding sleeve 402 close to the limiting plate, the spring is sleeved on the guide rod 401, and two ends of the spring are respectively abutted between the limiting plate and the groove.

Specifically, the groove can be configured according to a groove structure commonly found in the prior art, for example, the groove can be specifically configured to include a circular bottom wall sleeved on the pressing sliding sleeve 402, and a side wall arranged along the circumferential direction of the bottom wall, the spring is specifically abutted on the bottom wall, and can also be limited in an area formed between the side wall and the guide rod 401 through the side wall, so as to improve the stability of the spring in use.

In this embodiment, in a preferable implementation form, the pressing sliding sleeve 402 is provided with an abutting protrusion 4022 arranged along the circumferential direction of the pressing sliding sleeve 402, and the abutting protrusion 4022 is located at one end of the pressing sliding sleeve 402 abutting against the peripheral region of the flange hole 301, so as to facilitate simulating a locking force applied by a gasket to the peripheral region of the flange hole 301 when a bolt is locked.

In order to improve the use effect of the elastic pressing member 4, in this embodiment, the guide 4012 is provided at one end of the guide rod 401 inserted into the flange hole 301, and the guide 4012 can guide the guide rod 401 to be inserted into the flange hole 301, so as to facilitate the convenience of inserting the guide rod 401 into the flange hole 301.

In addition, as shown in fig. 1, in the present embodiment, as a preferred embodiment, the base 1 is provided with a support rod 101 arranged along the height direction of the base 1, a top plate 102 is provided on the top of the support rod 101, and the driving part 2 is provided on the top plate 102. Here, the number and the arrangement form of the supporting rods 101 may be set and adjusted according to actual supporting requirements, for example, four supporting rods 101 may be specifically set, and the four supporting rods 101 are arranged in a rectangular shape.

In order to facilitate the assembly and disassembly of the pressing assembly, in the present embodiment, the driving part 2 is connected with the supporting frame 5 through the pushing plate 6. In a preferred embodiment, the pushing plate 6 is slidably disposed on the supporting rod 101 to improve the sliding stability of the pushing plate 6. Specifically, the driving portion 2 may employ a common cylinder product, and the supporting rod 101 may be disposed in a cylindrical shape to facilitate the sliding of the pushing plate 6 along the supporting rod 101.

In addition, in this embodiment, in a preferred implementation form, the base 1 is provided with the casing placing table 103, and the casing placing table 103 is provided with through holes arranged in one-to-one correspondence with the flange holes 301, so that the guide rod 401 can be inserted into the flange holes 301 and then be inserted into the through holes, so that the guide rod 401 can drive the pressing sliding sleeve 402 to continue to apply the pressing force through the limiting portion 4011 and the elastic member 403, and finally the pressing force is adjusted to a degree matching with the locking force of the bolt, thereby having a better simulation effect.

It should be noted that, the upper case 3 of this embodiment is generally buckled on the case placing table 103 when in use, so that the flange of the upper case 3 is attached to the case placing table 103, and this arrangement can improve the reliability of the pressing component for pressing the upper case 3 during testing.

When the test tool for simulating the locking force of the bolt of the battery pack upper shell is used, the driving part 2 is started, the driving part 2 drives the supporting frame 5 to descend through the pushing plate 6, each elastic pressing piece 4 descends to the flange edge of the upper shell 3 along with the supporting frame 5 and is guided by the guiding part 4012, each elastic pressing piece 4 elastically abuts against the corresponding flange hole 301, namely, the state shown in fig. 1 enters the state shown in fig. 3, the simulation of the locking force of the bolt is further realized, and therefore, the cracking condition of the upper shell 3 is tested and recognized.

The test fixture of casing bolt locking force on the simulation battery package of this embodiment, order to compress tightly subassembly elasticity through drive division 2 and compress tightly each flange hole 301 department of casing 3 on the battery package, can form the locking force that elasticity packing force produced when tightening the bolt in simulation casing 3, can test in advance and discern the 3 circumstances of ftractureing of casing, and compare in the test mode through bolt locking, still can avoid going up casing 3 and ftracture in the testing process, reduce 3 damage risks of casing, and simultaneously, set up a plurality of elasticity and compress tightly piece 4, also can with flange hole 301 one-to-one, promote efficiency of software testing, and can promote this test fixture's result of use.

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 a test fixture of casing bolt locking force on simulation battery package which characterized in that:

the device comprises a base (1) with an upper shell (3), a driving part (2) which is arranged on the base (1) and is arranged at intervals with the upper shell (3), and a pressing component which is driven by the driving part (2) and can lift along the height direction of the base (1);

the pressing component is provided with elastic pressing pieces (4) which correspond to the flange holes (301) in the upper shell (3) one by one, and under the driving of the driving part (2), the elastic pressing pieces (4) can descend and elastically press the corresponding flange holes (301).

2. The test tool for simulating the locking force of the bolt of the shell on the battery pack according to claim 1, characterized in that:

the pressing assembly comprises a support frame (5) connected with the driving end of the driving part (2), and each elastic pressing piece (4) is arranged on the support frame (5).

3. The test tool for simulating the locking force of the bolt of the upper shell of the battery pack according to claim 2, characterized in that:

the elastic pressing part (4) comprises a guide rod (401) arranged on the support frame (5), a pressing sliding sleeve (402) arranged on the guide rod (401) in a sliding manner, and an elastic part (403) arranged between the guide rod (401) and the pressing sliding sleeve (402), wherein the guide rod (401) is arranged along the height direction of the base (1);

when the driving part (2) drives the support frame (5) to descend, the guide rod (401) can be inserted into the corresponding flange hole (301), and the pressing sliding sleeve (402) can abut against the peripheral area of the flange hole (301).

4. The test tool for simulating the locking force of the bolt of the upper shell of the battery pack according to claim 3, wherein the test tool comprises:

be equipped with spacing portion (4011) on guide bar (401), compress tightly being equipped with spacing cooperation portion (4021) on sliding sleeve (402), elastic component (403) are located spacing portion (4011) with between spacing cooperation portion (4021).

5. The test tool for simulating the locking force of the bolt of the upper shell of the battery pack according to claim 3, wherein the test tool comprises:

the pressing sliding sleeve (402) is provided with an abutting protrusion (4022) which is circumferentially arranged along the pressing sliding sleeve (402), and the abutting protrusion (4022) is located at one end of the peripheral area of the flange hole (301) abutted to the pressing sliding sleeve (402).

6. The test tool for simulating the locking force of the bolt of the shell on the battery pack according to claim 3, wherein the test tool comprises:

the insertion of guide bar (401) the one end in flange hole (301) is equipped with guide portion (4012), guide portion (4012) can guide bar (401) inserts in flange hole (301).

7. The test tool for simulating the locking force of the bolt of the shell on the battery pack according to claim 2, characterized in that:

the base (1) is provided with a support rod (101) arranged along the height direction of the base (1), the top of the support rod (101) is provided with a top plate (102), and the driving part (2) is arranged on the top plate (102).

8. The test tool for simulating the locking force of the bolt of the upper shell of the battery pack according to claim 7, wherein:

the driving part (2) is connected with the supporting frame (5) through a pushing plate (6).

9. The test tool for simulating the locking force of the bolt of the shell on the battery pack according to claim 8, wherein:

the pushing plate (6) is arranged on the supporting rod (101) in a sliding mode.

10. The test tool for simulating the locking force of the bolt of the shell on the battery pack according to any one of claims 1 to 9, wherein:

the base (1) is provided with a shell placing table (103), and the shell placing table (103) is provided with through holes which are arranged in one-to-one correspondence with the flange holes (301).