Detection tool for lower shell of battery pack

Abstract

The utility model discloses a testing fixture for a lower shell of a battery pack, which comprises a first column body, a positioning assembly, a second column body, a first insertion piece and a turnover mechanism, the first column body is used for supporting the lower shell and is provided with a first detection hole A corresponding to a part of a first mounting hole, and the positioning assembly is used for being inserted into a peripheral hole body of the lower shell. The second column body is provided with a first detection hole B corresponding to the remaining first installation holes, the first insertion piece is used for being inserted into the first detection hole A, the first detection hole B and the first installation holes, and the turnover mechanisms located on the left side and the right side are provided with second insertion pieces used for being inserted into the second installation holes in the inclined direction. The turnover mechanism located at the front end is provided with a third insertion piece used for being inserted into the third mounting hole in the transverse direction, and the turnover mechanism located at the rear end is provided with a fourth insertion piece used for being inserted into the fourth mounting hole in the vertical direction. Through the cooperation of the positioning assembly, the first insertion piece, the second insertion piece, the third insertion piece and the fourth insertion piece, the accuracy of the hole position of the mounting hole can be detected.

Description

Technical Field

[0001] The utility model relates to the field of inspection tools, in particular to an inspection tool for a lower shell of a battery pack. Background Art

[0002] Batteries play an important role in new energy vehicles. They are the core energy storage and release devices of new energy vehicles. They usually account for about half of the cost of new energy vehicles and have a vital impact on the performance of new energy vehicles. The lower shell of the battery pack of new energy vehicles is an important part of the battery pack. Its main function is to protect the battery pack from external impact and damage. Therefore, it is necessary to design a special inspection fixture for the lower shell. Utility Model Content

[0003] The embodiment of the present application provides a check fixture for the lower shell of a battery pack, which is used to detect whether the positions of the mounting holes on the lower shell of a new energy battery are correct after the lower shell is produced.

[0004] The present application embodiment provides a battery pack lower housing inspection tool, including:

[0005] The first column has a support surface, the support surface is used to support the lower shell, and the support surface is provided with a first detection hole A corresponding to a portion of the first mounting hole of the lower shell;

[0006] A positioning assembly having an insertion end, the insertion end being used to be inserted into the peripheral hole of the lower shell;

[0007] A second column is provided with a first detection hole B corresponding to the remaining first mounting hole of the lower shell;

[0008] A first inserting member, used for inserting into the first detection hole A, the first detection hole B and the first mounting holes corresponding to each other;

[0009] The flipping mechanisms are respectively located on the left and right sides and the front and rear ends of the lower shell body. The flipping mechanisms located on the left and right sides are configured with a second insert, and the second insert is used to be inserted obliquely into the second mounting hole on the side of the lower shell body. The flipping mechanism located at the front end is configured with a third insert, and the third insert is used to be inserted horizontally into the third mounting hole at one end of the lower shell body. The flipping mechanism located at the rear end is configured with a fourth insert, and the fourth insert is used to be inserted vertically into the fourth mounting hole at the other end of the lower shell body.

[0010] The beneficial effect of the above embodiment is that the accuracy of the hole position on the specific lower shell can be detected through the cooperation of the positioning component, the first insert, the second insert, the third insert, and the fourth insert.

[0011] Based on the above embodiments, the embodiments of the present application may also be improved as follows:

[0012] In one embodiment of the present application: the positioning assembly includes: a first positioning column and a second positioning column, the first positioning column has a circular cross section, the second positioning column has a waist cross section, and the first positioning column and the second positioning column form the insertion end. The beneficial effect of this step: the lower shell is stably positioned on the first column by the first positioning column and the second positioning column.

[0013] In one of the embodiments of the present application: the flipping mechanism also includes: a base; a swing arm, one end of which is hinged to the base, and the other end of which is provided with the second insert, the third insert or the fourth insert; a positioning plate connected to the base, the positioning plate being used to limit the maximum rotation angle of the swing arm away from the lower shell; a positioning member, which is arranged between the base and the swing arm, and the positioning member is used to position the swing arm at the detection position. The beneficial effect of this step: the flipping mechanism can not only realize the detection of hole position accuracy, but also avoid the interference between the lower shell and the structure on the inspection fixture during the process of taking and putting down the shell.

[0014] In one embodiment of the present application: the flip mechanism further comprises: a limiter connected to the base, the limiter is located below the swing arm, and the limiter is used to position the swing arm at the detection position. Beneficial effect of this step: the swing arm can be quickly positioned at the detection position by the limiter.

[0015] In one embodiment of the present application: the flipping mechanism located on the left and right sides also includes: a first sliding post, a first elastic member, and a first guide sleeve, the first guide sleeve is connected to the swing arm, the first sliding post is slidably inserted in the first guide sleeve and is used to detect the second mounting hole, the first elastic member is arranged between the first sliding post and the first guide sleeve, and the first elastic member is used to apply an external force to the first sliding post away from the second mounting hole; the flipping mechanism located at the front end also includes: a second sliding post, a second elastic member, and a second guide sleeve, the second guide sleeve is connected to the swing arm, the second sliding post is slidably inserted in the second guide sleeve and is used to detect the third The mounting hole, the second elastic member is arranged between the second sliding post and the second guide sleeve, the second elastic member is used to apply an external force to the second sliding post away from the third mounting hole; the flip mechanism located at the rear end also includes: a third sliding post and a third guide sleeve, the third guide sleeve is connected to the swing arm, the third sliding post is slidably inserted in the third guide sleeve and is used to detect the fourth mounting hole, the outer periphery of the third sliding post is also protruded with a plate body, the plate body has a limiting portion and a notch portion, the swing arm is provided with a limiting groove corresponding to the limiting portion, the limiting groove is used to limit the limiting portion in the limiting groove, and the notch portion is used to make the plate body break away from the limiting position of the limiting groove.

[0016] In one of the embodiments of the present application: it also includes: a third column, which has a second detection hole corresponding to the fifth mounting hole of the second lower shell; and a fifth insert, which is used to be inserted into the second detection hole and the fifth mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of the first type of lower shell of the battery pack is detected by a test fixture;

[0019] Figure 2 A schematic diagram of the two-dimensional structure of the first type of lower shell of the battery pack is shown in the inspection fixture;

[0020] Figure 3 for Figure 2 Schematic diagram of the structure of the middle edge AA;

[0021] Figure 4 for Figure 2 Schematic diagram of the structure of the middle edge BB;

[0022] Figure 5 for Figure 2 Schematic diagram of the structure of the mid-edge CC;

[0023] Figure 6 A schematic diagram of the three-dimensional structure of the second type of lower shell of the battery pack is detected by a testing fixture;

[0024] Figure 7 A schematic diagram of the two-dimensional structure of a second type of lower shell of a battery pack using a testing fixture to test the lower shell;

[0025] Figure 8 for Figure 7 Schematic diagram of the structure of the middle edge DD.

[0026] Wherein, 1 is a first column, 101 is a first detection hole A;

[0027] 2 positioning assembly, 201 first positioning column, 202 second positioning column;

[0028] 3 second column, 301 first detection hole B;

[0029] 4 first insert;

[0030] 5 flip mechanism, 501 base, 502 swing arm, 503 positioning plate, 504 positioning member, 505 limiting member, 506 first sliding column, 507 first elastic member, 508 first guide sleeve, 509 second sliding column, 510 second elastic member, 511 second guide sleeve, 512 third sliding column, 513 third guide sleeve, 514 plate body, 515 limiting portion, 516 notch portion, 517 limiting groove;

[0031] 6 lower housing, 601 first mounting hole, 602 second mounting hole, 603 third mounting hole, 604 fourth mounting hole;

[0032] 7 sleeves;

[0033] 8 third column, 801 second detection hole;

[0034] 9 Fifth insert. DETAILED DESCRIPTION

[0035] In this application, unless otherwise clearly specified and limited, the terms in this application should be understood in a broad sense, such as connection can be fixed connection, detachable connection or integration, direct connection or indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of different terms in this utility model can be understood according to specific circumstances, and the scope of the specific meaning should be limited to realizing the functions of this application.

[0036] like Figure 1-5 As shown, a battery pack lower shell inspection tool includes: a first column 1, a positioning component 2, a second column 3, a first insert 4, and a flip mechanism 5. The first column 1 has a support surface, the support surface is used to support the lower shell 6, and the support surface corresponds to a portion of the first mounting hole 601 of the lower shell 6 and is provided with a first detection hole A101. The positioning component 2 has an insertion end, and the insertion end is used to be inserted into the peripheral hole of the lower shell 6. The second column 3 corresponds to the remaining first mounting hole 601 of the lower shell 6 and is provided with a first detection hole B301. The first insert 4 is used to insert the first detection hole A101 and the first detection hole B301. In the hole B301 and the corresponding first mounting holes 601, the flipping mechanisms 5 are respectively located on the left and right sides and the front and rear ends of the lower shell 6. The flipping mechanisms 5 located on the left and right sides are configured with a second insert, which is used to be inserted obliquely into the second mounting hole 602 on the side of the lower shell 6. The flipping mechanism 5 located at the front end is configured with a third insert, which is used to be inserted horizontally into the third mounting hole 603 at one end of the lower shell 6. The flipping mechanism 5 located at the rear end is configured with a fourth insert, which is used to be inserted vertically into the fourth mounting hole 604 at the other end of the lower shell 6.

[0037] In some embodiments of the present application, Figure 1-8As shown, the inspection fixture for the lower shell of the battery pack also includes a bottom plate, and the first column 1, the positioning assembly 2, the second column 3, the first insert 4, and the flip mechanism 5 are all arranged on the bottom plate.

[0038] In some embodiments of the present application, Figure 1 As shown, the positions of the first detection hole A101, the first detection hole B301, the second insert, the third insert, the fourth insert, and the positioning assembly 2 are all arranged according to the design dimensions of the lower shell 6, so that the position of the mounting holes of the lower shell 6 actually produced and processed can be detected to be correct.

[0039] In some embodiments of the present application, Figure 1 As shown, there are four first columns 1 and four second columns 3 , and two first columns 1 and two second columns 3 are disposed on one side of the lower shell 6 , and the two second columns 3 are located between the two first columns 1 .

[0040] In some embodiments of the present application, Figure 1 As shown, a sleeve 7 is provided on the surface of the bottom plate, and the sleeve 7 is used for inserting the first insert 4. The sleeve 7 facilitates the storage of the first insert 4.

[0041] In some embodiments of the present application, Figure 3 As shown, the positioning assembly 2 includes: a first positioning column 201 and a second positioning column 202. The cross-section of the first positioning column 201 is circular, and the cross-section of the second positioning column 202 is waist-shaped. The first positioning column 201 and the second positioning column 202 form an insertion end. The reason for designing the first positioning column 201 and the second positioning column 202 with different shapes is that the shapes of the holes in the lower shell 6 are different.

[0042] In some embodiments of the present application, Figure 1 As shown, the flip mechanism 5 also includes: a base 501, a swing arm 502, a positioning plate 503, and a positioning piece 504. The base 501 is connected to the bottom plate. One end of the swing arm 502 is hinged to the base 501, and the other end is provided with a second insert, a third insert or a fourth insert. The positioning plate 503 is connected to the base 501. The positioning plate 503 is used to limit the maximum rotation angle of the swing arm 502 away from the lower shell 6. The positioning piece 504 is arranged between the base 501 and the swing arm 502. The positioning piece 504 is used to position the swing arm 502 at the detection position, wherein the base 501 is mounted on a column arranged on the bottom plate, the positioning piece 504 is a plug, and the base 501 and the swing arm 502 are both provided with holes. When the plug passes through the holes of the base 501 and the swing arm 502 to position the swing arm 502, the second insert, the third insert or the fourth insert is all located at the detection position.

[0043] In some embodiments of the present application, Figure 1As shown, the flip mechanism 5 also includes: a limit member 505, which is connected to the base 501, and the limit member 505 is located below the swing arm 502. The limit member 505 is used to position the swing arm 502 at the detection position, wherein one end of the base 501 has a bending plate, and the lower end of the limit member 505 has a plug-in end, which is plug-in connected to the bending plate. The plug-in end can be directly inserted into the through hole corresponding to the bending plate, and the plug-in end can also be connected to the threaded hole corresponding to the bending plate in a threaded connection manner. The advantage of setting the threaded hole is that it is easy to adjust the height of the limit member 505, thereby facilitating the direct positioning of the swing arm 502 to the detection position, thereby improving the usability of the inspection fixture.

[0044] In some embodiments of the present application, Figure 1 As shown, the flip mechanism 5 located on the left and right sides also includes: a first slide post 506, a first elastic member 507, and a first guide sleeve 508. The first guide sleeve 508 is connected to the swing arm 502. The first slide post 506 is a second insert. The first slide post 506 is slidably inserted in the first guide sleeve 508 and is used to detect the second mounting hole 602. The first elastic member 507 is arranged between the first slide post 506 and the first guide sleeve 508. The first elastic member 507 is used to exert an elastic force on the first slide post 506 to move away from the second mounting hole 602. The external force is exerted on the first guide sleeve 508 to improve the smoothness of the sliding process of the first slide post 506, thereby avoiding wear of the base 501. The first elastic member 507 adopts a cylindrical compression spring. The first elastic member 507 is sleeved on the first slide post 506 and is arranged between the flange of the first guide sleeve 508 and the spherical gripping portion of the first slide post 506. By pressing the spherical gripping portion, the cylindrical detection end at the front end of the first slide post 506 is inserted into the corresponding second mounting hole 602, so as to detect whether the position of the second mounting hole 602 is correct.

[0045] In some embodiments of the present application, Figure 1 As shown, the flip mechanism 5 located at the front end also includes: a second slide post 509, a second elastic member 510, and a second guide sleeve 511. The second guide sleeve 511 is connected to the swing arm 502. The second slide post 509 is the third insert. The second slide post 509 is slidably inserted in the second guide sleeve 511 and is used to detect the third mounting hole 603. The second elastic member 510 is arranged between the second slide post 509 and the second guide sleeve 511. The second elastic member 510 is used to apply an external force to the second slide post 509 away from the third mounting hole 603. The structure formed by the second slide post 509, the second elastic member 510, and the second guide sleeve 511 is the same as the structure formed by the first slide post 506, the first elastic member 507, and the first guide sleeve 508. Each seat body is equipped with two second slide posts 509.

[0046] In some embodiments of the present application, Figure 1As shown, the flip mechanism 5 located at the rear end also includes: a third slide post 512, a third guide sleeve 513, the third guide sleeve 513 is connected to the swing arm 502, the third slide post 512 is slidably inserted in the third guide sleeve 513 and is used to detect the fourth mounting hole 604, the third slide post 512 is the fourth insert, and the outer periphery of the third slide post 512 is also convexly provided with a plate body 514, the plate body 514 has a limiting portion 515 and a notch portion 516, the swing arm 502 is provided with a limiting groove 517 corresponding to the limiting portion 515, the limiting groove 517 is used to limit the limiting portion 515 in the limiting groove 517, and the notch portion 516 is provided. The mouth portion 516 is used to make the plate body 514 disengage from the limiting groove 517, wherein the third slide post 512 can rotate in the third guide sleeve 513, so that the limiting portion 515 and the notch portion 516 of the plate body 514 can switch in the limiting groove 517, and when the detection end at the lower end of the third slide post 512 is inserted into the fourth mounting hole 604, the third slide post 512 can be rotated so that the limiting portion 515 enters the limiting groove 517, thereby positioning the third slide post 512, and the third slide post 512 limits the peripheral structure of the fourth mounting hole 604, thereby positioning the rear end of the lower shell 6.

[0047] In some embodiments of the present application, Figure 1 , 6 , 7, and 8, since there is another lower shell 6 with the structure shown in the figure, it is defined as the second lower shell 6, and the former lower shell 6 is defined as the first lower shell 6. The second lower shell 6 has the same hole positions as the first mounting hole 601 and the second mounting hole 602 of the first lower shell 6, and the hole position of the fourth mounting hole 604 of the second lower shell 6 is different from the hole position of the fourth mounting hole 604 of the first lower shell 6. Therefore, four third slide posts 512 are arranged on the bottom plate, two of which correspond to the design position of the fourth hole position in the first lower shell 6, and the other two third slide posts 512 correspond to the design position of the fourth hole position in the first lower shell 6. The position of the column 512 corresponds to the design position of the fourth hole in the second lower shell 6. The second shell does not have the third mounting hole 603, but has the fifth mounting hole as shown in the figure. Therefore, the inspection tool also has the following corresponding design structure. The inspection tool for the lower shell of the battery pack also includes: a third column 8 and a fifth insert 9. The third column 8 has a second detection hole 801 corresponding to the fifth mounting hole of the second lower shell 6. The fifth insert 9 is used to insert into the second detection hole 801 and the fifth mounting hole. Through the above design, the versatility of the inspection tool is improved, and two lower shells 6 with similar structures can be inspected.

[0048] The method of using this inspection tool is as follows: place the lower shell 6 to be inspected on the first column 1, and limit the lower shell 6 by the first insert 4 and the second insert. According to whether the first type of lower shell 6 or the second type of lower shell 6 is to be inspected, select the first insert 4, the second insert, the third insert, and the fourth insert, or select the first insert 4, the second insert, the fourth insert, and the fifth insert 9 to insert into the corresponding mounting holes in the lower shell 6. If the above operations can be carried out smoothly, the mounting hole position of the lower shell 6 is correct and the lower shell 6 passes the inspection. Otherwise, the lower shell 6 fails the inspection.

[0049] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A battery pack lower shell inspection tool, characterized in that: include: The first column has a support surface, the support surface is used to support the lower shell, and the support surface is provided with a first detection hole A corresponding to a portion of the first mounting hole of the lower shell; A positioning assembly having an insertion end, the insertion end being used to be inserted into the peripheral hole of the lower shell; A second column, corresponding to the remaining first mounting hole of the lower shell, is provided with a first detection hole B; A first inserting member, used for inserting into the first detection hole A, the first detection hole B and the first mounting holes corresponding to each other; The flipping mechanisms are respectively located on the left and right sides and the front and rear ends of the lower shell body. The flipping mechanisms located on the left and right sides are configured with a second insert, and the second insert is used to be inserted obliquely into the second mounting hole on the side of the lower shell body. The flipping mechanism located at the front end is configured with a third insert, and the third insert is used to be inserted horizontally into the third mounting hole at one end of the lower shell body. The flipping mechanism located at the rear end is configured with a fourth insert, and the fourth insert is used to be inserted vertically into the fourth mounting hole at the other end of the lower shell body.

2. The inspection tool for the lower shell of the battery pack according to claim 1, characterized in that: The positioning assembly includes: a first positioning column and a second positioning column. The first positioning column has a circular cross-section, the second positioning column has a waist-shaped cross-section, and the first positioning column and the second positioning column form the insertion end.

3. The inspection tool for the lower case of the battery pack according to claim 1, characterized in that: The flipping mechanism also includes: Base; A swing arm, one end of which is hinged to the base, and the other end of which is provided with the second insert, the third insert or the fourth insert; A positioning plate connected to the base, the positioning plate being used to limit the maximum rotation angle of the swing arm away from the lower housing; A positioning member is arranged between the base and the swing arm, and the positioning member is used to position the swing arm at a detection position.

4. The inspection tool for the lower case of the battery pack according to claim 3, characterized in that: The flipping mechanism also includes: A limit member is connected to the base, the limit member is located below the swing arm, and the limit member is used to position the swing arm at a detection position.

5. The inspection tool for the lower case of the battery pack according to claim 3, characterized in that: The flipping mechanism located on the left and right sides also includes: a first sliding post, a first elastic member, and a first guide sleeve, wherein the first guide sleeve is connected to the swing arm, the first sliding post is slidably inserted in the first guide sleeve and is used to detect the second mounting hole, the first elastic member is arranged between the first sliding post and the first guide sleeve, and the first elastic member is used to apply an external force to the first sliding post away from the second mounting hole; The flip mechanism at the front end further includes: a second slide post, a second elastic member, and a second guide sleeve, wherein the second guide sleeve is connected to the swing arm, the second slide post is slidably inserted in the second guide sleeve and is used to detect the third mounting hole, the second elastic member is arranged between the second slide post and the second guide sleeve, and the second elastic member is used to apply an external force to the second slide post away from the third mounting hole; The flipping mechanism located at the rear end also includes: a third slide post and a third guide sleeve, the third guide sleeve is connected to the swing arm, the third slide post is slidably inserted in the third guide sleeve and is used to detect the fourth mounting hole, and a plate body is also protruded from the outer periphery of the third slide post, the plate body has a limiting portion and a notch portion, and the swing arm is provided with a limiting groove corresponding to the limiting portion, the limiting groove is used to limit the limiting portion in the limiting groove, and the notch portion is used to make the plate body break away from the limiting position of the limiting groove.

6. The inspection tool for the lower case of a battery pack according to claim 1, characterized in that: Also includes: The third column has a second detection hole corresponding to the fifth mounting hole of the second lower shell; The fifth inserting piece is used to be inserted into the second detection hole and the fifth mounting hole.

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