CN220960940U

CN220960940U - Measuring clamp

Info

Publication number: CN220960940U
Application number: CN202322910523.7U
Authority: CN
Inventors: 刘路; 李真棠
Original assignee: Guangdong Carriage Power Technology Co ltd
Current assignee: Guangdong Carriage Power Technology Co ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-05-14
Anticipated expiration: 2033-10-27

Abstract

The application relates to a measuring clamp, and relates to the technical field of battery detection devices. The battery cell module comprises a battery cell module and a separation device, wherein one end of the battery cell module is provided with a first threaded hole; the separation device comprises a separation body and a threaded rod, wherein a second threaded hole is formed in the separation body, the threaded rod is matched with the second threaded hole, a current collecting disc is welded on the battery shell and located at one end of the battery cell module, the first threaded hole is formed in the current collecting disc, a through hole is formed in the current collecting disc, and the threaded rod penetrates through the through hole to be in threaded fit with the first threaded hole. The knob threaded rod is in threaded connection with the first threaded hole, tension detection equipment is started, the separation device can carry the battery cell module to move together, the current collecting disc is finally separated from the battery shell, the tension detection equipment can detect the force overcome by separating the battery shell from the current collecting disc, and the problem that the current collecting disc and the battery shell of the cylindrical battery cannot be separated by the existing measuring clamp, so that welding tension cannot be measured by using a tension detection instrument is solved.

Description

Measuring clamp

Technical Field

The utility model relates to the technical field of battery detection devices, in particular to a measuring clamp.

Background

All welding projects in the new energy manufacturing process flow need to have a data detection standard, but a new product currently lacks an effective detection means, and only can be manually torn by pliers to judge whether the product performance is good or not, and a tension detection instrument cannot be used for measuring welding tension, so that a data management and control detection mode cannot be formed.

The utility model patent with publication number CN202305384U discloses a laser welding tension testing tool for a circular lithium ion battery, which is characterized by comprising a handle used for clamping a tension testing device and a limiting unit which is fixed with the handle and used for loading a battery cover and a positive lug which are welded together from one side and limiting the movable space of the battery cover and the positive lug within a certain range. During testing, the bottom of the winding core is required to be fixed on a lower fixing clamp of the tensile tester, the current collecting disc is clamped in the limiting unit, then the upper fixing clamp of the tensile tester is clamped and pulled upwards until the current collecting disc is separated from the winding core, and the maximum tensile force of welding between the current collecting disc and the winding core can be measured.

However, the utility model can only aim at the type of the battery with the current collecting disc clamped on the limiting unit, and for a large cylindrical battery, the current collecting disc is welded at one end of the battery shell, and the current collecting disc cannot be well clamped by the limiting unit disclosed by the utility model, so that the current collecting disc cannot be well separated from the battery shell to enable a tensile force testing instrument to conduct welding tensile force testing.

For the related art, there is a problem that the existing measuring fixture cannot separate the current collecting disc of the cylindrical battery from the battery shell, so that the welding tension cannot be measured by using the tension detecting instrument.

Disclosure of utility model

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a measuring fixture, which aims to solve the problem that the existing measuring fixture cannot separate the current collecting tray of the cylindrical battery from the battery case, so that the welding tension cannot be measured by using a tension detecting instrument.

The application provides a measuring clamp which adopts the following technical scheme: a measurement jig comprising:

The battery cell module is arranged in the battery shell, and one end of the battery cell module is provided with a first threaded hole;

The separating device comprises a separating body and a threaded rod, wherein a second threaded hole is formed in the separating body, the threaded rod is matched with the second threaded hole, a clamp fixing piece is further arranged on the separating body, and the clamp fixing piece is used for fixing the measuring clamp on tension detection equipment;

The battery shell is welded with a current collecting disc, the current collecting disc is located at one end of the battery cell module, the end of the current collecting disc is provided with the first threaded hole, a through hole is formed in the current collecting disc, and the threaded rod penetrates through the through hole and is in threaded fit with the first threaded hole.

Optionally, the separating body includes a threaded connection portion, a avoidance portion, and a fixing portion, the avoidance portion connects the threaded connection portion and the fixing portion, the second threaded hole is disposed on the threaded connection portion, and the fixture fixing piece is disposed on the fixing portion;

and one end of the threaded rod, which is far away from the battery cell module, is provided with a rotation assisting piece.

Optionally, the rotation assisting piece comprises a rotation cap and a rotation rod, wherein the end part of the rotation cap is arranged at one end of the threaded rod far away from the battery cell module, the rotation rod is arranged on the side wall of the rotation cap, and a blocking ball is arranged at the end part of the rotation rod.

Optionally, the fixture fixing piece comprises an insertion column, the insertion column is used for being inserted into the tension detection equipment, a bolt hole is formed in the insertion column and used for being matched with the bolt, and the fixture fixing piece is fixed onto the tension detection equipment.

Optionally, the fixture fixing piece further comprises a lock catch, the lock catch is sleeved on the periphery of the insertion column, and the lock catch is in threaded connection with the side wall of the insertion column.

Optionally, anti-skidding lines are arranged on the side walls of the lock catches, and anti-skidding gaps are arranged on the side walls of the lock catches at intervals.

Optionally, the maximum outer diameter of the battery cell module is the same as the inner diameter of the battery case.

Optionally, an outer diameter of an end of the cell module, at which the first threaded hole is provided, is smaller than an inner diameter of the cell housing.

Optionally, the cell module is provided with a ventilation groove on the side wall with the largest outer diameter.

Optionally, the cell module is provided with ventilation holes communicated with two ends.

Compared with the prior art, the embodiment of the utility model has the following advantages:

before welding tension detection, the cell module is placed into a battery shell, and then a current collecting disc is welded at one end of the battery shell passing through the cell module.

When welding tension detection is carried out, the battery shell is firstly fixed on a workbench of the tension detection equipment, and the clamp fixing piece arranged on the separation body is fixed on the tension detection equipment. The knob is arranged on the threaded rod of the separation body, the threaded rod penetrates through the through hole on the current collecting disc to be in threaded connection with the first threaded hole on the battery cell module inside the battery shell, the tension detection equipment is started, the separation device moves away from the battery shell, the threaded rod is in threaded connection with the first threaded hole, the separation device can carry the battery cell module to move together, the battery cell module can be propped against the current collecting disc in the movement process, the current collecting disc can be separated from the battery shell along with the continuous movement of the battery cell module, in the separation process of the current collecting disc and the battery shell, the tension detection equipment can detect the force overcome by the current collecting disc to separate the battery shell so as to achieve the aim of measuring the welding tension between the current collecting disc and the battery shell, and the problem that the current measurement clamp cannot separate the current collecting disc and the battery shell of the cylindrical battery, and the welding tension cannot be measured by using the tension detection instrument is solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of the overall structure of a measuring jig according to an embodiment of the present application;

FIG. 2 is an exploded view of a measurement fixture mated with a battery housing and current collecting tray in an embodiment of the application;

FIG. 3 is a schematic view of a separating apparatus of a measuring jig according to an embodiment of the present application;

FIG. 4 is an exploded view of a separating apparatus of a measuring jig in an embodiment of the application;

Fig. 5 is a schematic structural diagram of a cell module of the measuring fixture in an embodiment of the present application.

Reference numerals illustrate:

1. A cell module; 11. a first threaded hole; 12. ventilation holes; 13. a ventilation groove; 2. a separation device; 21. separating the body; 211. a threaded connection; 212. a avoidance part; 213. a fixing part; 2131. a third threaded hole; 214. a clamp fixing member; 2141. inserting a column; 2141a, pin holes; 2141b, studs; 2142. locking; 2142a, anti-skid threads; 2142b, anti-slip notch; 22. a threaded rod; 221. a rotation assisting member; 2211. a cap is screwed; 2212. a rotating rod; 2213. and a blocking ball.

Detailed Description

In order to make the present utility model better understood by those skilled in the art, the following description will make clear and complete descriptions of the technical solutions of the embodiments of the present utility model with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The application is described in further detail below with reference to the drawings.

The embodiment of the application discloses a measuring clamp.

As shown in fig. 1, 2 and 3, a measuring jig includes: the battery cell module 1 and the separating device 2, wherein the battery cell module 1 is arranged in the battery shell, and one end of the battery cell module 1 is provided with a first threaded hole 11; the separating device 2 comprises a separating body 21 and a threaded rod 22, the separating body 21 is provided with a second threaded hole, the threaded rod 22 is matched with the second threaded hole, the separating body 21 is also provided with a clamp fixing piece 214, and the clamp fixing piece 214 is used for fixing the measuring clamp on the tension detecting equipment; wherein, the welding has the mass flow dish on the battery case, and the mass flow dish is located the one end that electric core module 1 was provided with first screw hole 11, is provided with the through-hole on the mass flow dish, and threaded rod 22 passes through the through-hole and screw-thread fit with first screw hole 11.

Specifically, the battery cell module 1 is inserted into the battery shell through the end of the battery shell, which is close to the separating device 2, and one end of the battery cell module 1, which is provided with the first threaded hole 11, is positioned on the same side as one end of the battery shell, which is close to the separating device 2, and the first threaded hole 11 is positioned in the middle of the end part of the battery cell module 1, and the current collecting disc is welded at one end of the battery shell, which is close to the separating device 2. The through hole is arranged in the middle of the collecting disc, and the through hole on the collecting disc is opposite to the first threaded hole 11 below. The threaded rod 22, after passing through the through hole in the collecting tray, can be threaded with the first threaded hole 11 located just below the through hole of the collecting tray.

Before welding tension detection, the battery cell module 1 is placed in a battery shell, and then a current collecting disc is welded at one end of the battery shell passing through the battery cell module 1.

In the welding tension test, the battery case is first fixed to the table of the tension test apparatus, and the jig fixing member 214 provided on the separation body 21 is fixed to the tension test apparatus. The knob is arranged on a threaded rod 22 on a separating body 21, the threaded rod 22 passes through a through hole on a current collecting disc and is in threaded connection with a first threaded hole 11 on a battery cell module 1 positioned in a battery shell, tension detection equipment is started, so that a separating device 2 moves away from the battery shell, the threaded rod 22 is in threaded connection with the first threaded hole 11, the separating device 2 can carry the battery cell module 1 to move together, the battery cell module 1 can be propped against the current collecting disc in the movement process, the current collecting disc can be separated from the battery shell finally along with the continuous movement of the battery cell module 1, and in the separation process of the current collecting disc and the battery shell, the tension detection equipment can detect the force overcome by the battery shell separated by the current collecting disc so as to achieve the purpose of measuring the welding tension between the current collecting disc and the battery shell, and the problem that the current measuring clamp can not separate the current collecting disc and the battery shell of a cylindrical battery, and the welding tension can not be measured by using a tension detection instrument is solved.

Specifically, as shown in fig. 3, the separation body 21 includes a screw connection portion 211, a clearance portion 212, and a fixing portion 213, the clearance portion 212 connects the screw connection portion 211 and the fixing portion 213, a second screw hole is provided on the screw connection portion 211, and a jig fixing member 214 is provided on the fixing portion 213.

The shape of the whole avoidance portion 212 is a shape of "], the threaded connection portion 211 and the fixing portion 213 are respectively arranged at two ends of the avoidance portion 212, a notch for avoiding is formed in the middle of the avoidance portion 212, the notch is rectangular, and the fixing portion 213 is located above the threaded connection portion 211. The corners of the two bends of the avoidance portion 212 are provided with chamfers to prevent the user from being scratched by the bends of the avoidance portion 212 when the separating device 2 is in use.

As shown in fig. 3 and 4, the fixture fixing member 214 includes an insertion post 2141, the insertion post 2141 is used for being inserted into the tension detecting device, a bolt hole 2141a is provided on the insertion post 2141, and the bolt hole 2141a is used for being matched with a bolt to fix the fixture fixing member 214 to the tension detecting device.

Specifically, the jig fixing member 214 is provided on the fixing portion 213 of the separation body 21. The shape of the insertion post 2141 is a columnar shape as a whole, the insertion post 2141 is disposed at an end of the fixing portion 213, the end of the fixing portion 213 is a columnar shape having the same radius as the cross section of the insertion post 2141, a third threaded hole 2131 is disposed at the end of the fixing portion 213, a stud 2141b is disposed at one end of the insertion post 2141, and threaded engagement is achieved between the insertion post 2141 and the fixing portion 213 by engagement of the stud 2141b with the third threaded hole 2131.

The latch hole 2141a is formed in the shaft near the other end of the insertion post 2141, and the latch hole 2141a is a circular through hole. When the separating apparatus 2 is installed, the insertion post 2141 may be inserted into the tension detecting device, and at this time, a bolt is inserted into the bolt hole 2141a, and a portion of the bolt may also be inserted into the tension detecting device, thereby realizing the fixation of the clamp fixing 214 to the tension detecting device.

The clamp fixture 214 further includes a lock 2142, wherein the lock 2142 is sleeved on the periphery of the insertion column 2141, and the lock 2142 is in threaded connection with the side wall of the insertion column 2141.

Specifically, the shape of the lock catch 2142 is a circular ring as a whole, the lock catch 2142 is provided with an internal thread, an external thread is arranged on the outer wall of the insertion column 2141 near the lower part of the bolt hole 2141a, the lock catch 2142 is matched with the insertion column 2141 through the matching of the internal thread and the external thread, after the bolt pipe passes through the bolt hole 2141a to fix the clamp fixing piece 214 on the tension detection equipment, the bolt can shake in the bolt hole 2141a, so that the clamp fixing piece 214 is not fixed firmly, hidden danger that the clamp fixing piece 214 breaks away from the tension detection equipment in the working process exists, and errors occur in detection of the tension detection equipment. Therefore, after the latch tube passes through the latch hole 2141a to fix the clamp fixing member 214 on the tensile force detection device, the latch 2142 is rotated, so that the latch 2142 moves close to the latch hole 2141a, and finally the latch 2142 presses the latch inserted into the latch hole 2141a, thereby achieving the effect of locking the latch and increasing the installation stability of the clamp fixing member 214.

The side wall of the lock 2142 is provided with anti-slip grooves 2142a, and the side wall of the lock 2142 is provided with anti-slip notches 2142b at intervals.

Specifically, in the present embodiment, four (it should be noted that, not limited to four, but one, two, three or more) anti-slip notches 2142b are provided and uniformly distributed on the side wall of the lock catch 2142 at intervals. Because the shackle 2142 needs to be rotated to lock the bolt inserted through the bolt hole 2141a, a large force is required to rotate the shackle 2142. The anti-slip patterns 2142a and the anti-slip notches 2142b are disposed on the side wall of the lock 2142 to increase the friction force during rotation of the lock 2142, so as to effectively prevent the occurrence of slipping during rotation of the lock 2142.

As shown in fig. 1 and 3, the threaded rod 22 is provided with a rotation aid 221 at the end remote from the cell module 1.

Specifically, the rotation assisting member 221 includes a screw cap 2211 and a screw rod 2212, the end of the screw cap 2211 is disposed at the end of the threaded rod 22 away from the cell module 1, the screw rod 2212 is disposed on the side wall of the screw cap 2211, wherein the end of the screw rod 2212 is provided with a blocking ball 2213. Specifically, the spin-rod 2212 is provided with a plurality of spin-rods 2212, the spin-cap 2211 is columnar overall, and the plurality of spin-rods 2212 are arranged on the side wall of the spin-cap 2211 at intervals. In the present embodiment, the rotating rods 2212 are vertically arranged on the side wall of the rotating cap 2211, two rotating rods 2212 are arranged, and two rotating rods 2212 are oppositely arranged on the side wall of the rotating cap 2211. The bottom of cap 2211 is fixedly connected with one end of threaded rod 22 away from cell module 1.

When it is desired to rotate the threaded rod 22 to move the threaded rod 22 toward or away from the battery module 1, the threaded rod 22 can be rotated by rotating the rotating rod 2212. Because the rotating rod 2212 is perpendicular to the side wall of the rotating cap 2211, the rotating rod 2212 can save more labor relative to the direct rotating of the threaded rod 22 by the lever principle.

The maximum cross-sectional diameter of the blocking ball 2213 is larger than the cross-sectional diameter of the spin beam 2212.

By arranging the blocking ball 2213 at the end part of the rotary rod 2212, when the rotary rod 2212 is rotated, the blocking ball 2213 plays a certain blocking role because the maximum section diameter of the blocking ball 2213 is larger than the section diameter of the rotary rod 2212, so that hands are effectively prevented from slipping off the rotary rod 2212 in the process of rotating the rotary rod 2212, and the efficiency of the rotary rod 2212 is improved.

As shown in fig. 2 and 5, the maximum outer diameter of the battery cell module 1 is the same as the inner diameter of the battery case. The outer diameter of the end of the battery cell module 1 provided with the first screw hole 11 is smaller than the inner diameter of the battery case.

Specifically, in the present embodiment, the overall shape of the battery cell module 1 is a columnar shape similar to the shape of the battery case. In this embodiment, the cross-sectional diameters of the two ends of the battery cell module 1 are different, and the cross-sectional diameter of the end of the battery cell module 1 provided with the first threaded hole 11 is smaller than the cross-sectional diameter of the end of the battery cell module 1 not provided with the first threaded hole 11. The cross-sectional diameter of the end of the cell module 1 where the first threaded hole 11 is not provided is the same as the inner diameter of the battery case so that the cell module 1 can be just put into the battery case. The cross-sectional diameter of the end of the cell module 1, where the first threaded hole 11 is not provided, is the maximum outer diameter of the cell module 1. Since the maximum outer diameter of the cell module 1 is the same as the inner diameter of the battery case. Effectively prevented rocking of electric core module 1 in the battery case, can guarantee that the screw hole on separator 2 can be smooth after passing through the through-hole on the mass flow disk cooperates with the first screw hole 11 of through-hole below, is convenient for weld the pulling force detection go on smoothly.

Since the current collecting plate is to be welded to the end of the battery case. While the end of the cell housing is on the same side as the end of the cell module 1 where the first threaded hole 11 is provided. The welding of the current collecting disc and the end of the battery case will generate a welding protrusion. And the cross section diameter of the one end that electric core module 1 was provided with first screw hole 11 is less than the internal diameter of battery case, can effectively avoid the protruding point of welding, prevents to take place the welding adhesion between electric core module 1 and mass flow dish and the battery case for to measuring the welding pulling force between mass flow dish and the battery case and cause the mistake.

The cell module 1 is provided with ventilation holes 12 communicated with two ends.

Specifically, the ventilation holes 12 are provided in plurality, and the ventilation holes 12 are spaced around the first screw hole 11. In this embodiment, four ventilation holes 12 are provided, and the four ventilation holes 12 are all connected to both ends of the battery module.

Because the in-process that electric core module 1 inserted the battery case, electric core module 1 can extrude the inside air of battery case, and the air between electric core module 1 and the battery case bottom can be put into smoothly in the battery case to electric core module 1 and cause the hindrance. The air holes 12 are formed in the battery cell module 1, and in the process of inserting the battery cell module 1 into the battery shell, air between the battery cell module 1 and the bottom of the battery shell can be discharged through the air holes 12, so that the air pressure between the battery cell module 1 and the bottom of the battery shell is reduced, and the battery cell module 1 can be smoothly installed in the battery shell.

The side wall of the cell module 1, which is positioned at the maximum outer diameter, is provided with a ventilation groove 13.

Specifically, the ventilation slots 13 are provided in plurality, and the ventilation slots 13 are spaced apart on the side wall of the cell module 1 located at the maximum outer diameter. The ventilation groove 13 may be a through groove formed only on the maximum outer diameter of the ventilation groove 13, or may be a through groove communicating both ends of the cell module 1. In the embodiment, the ventilation grooves 13 are through grooves communicated with two ends of the battery cell module 1, the ventilation grooves 13 are arc-shaped, the ventilation grooves 13 are four, and the four ventilation grooves 13 are arranged on the side wall of the battery cell module 1 at intervals.

When the battery cell module 1 is inserted into the battery case, the maximum outer diameter of the battery cell module 1 is the same as the inner diameter of the battery case, so that the battery cell module 1 may press the air inside the battery case to prevent the battery cell module 1 from being continuously inserted into the battery case. The ventilation groove 13 is arranged on the side wall of the maximum outer diameter of the battery cell module 1, and is only a through groove formed on the maximum outer diameter of the ventilation groove 13, or is communicated with the two ends of the battery cell module 1, so that the air in the battery shell can be discharged to the outside through the ventilation groove 13 on the premise of not affecting the stability of the cooperation of the battery cell module and the battery shell, and the battery cell module 1 can be smoothly installed in the battery shell.

To sum up, a measuring jig includes: the battery cell module 1 and the separating device 2, wherein the battery cell module 1 is arranged in the battery shell, and one end of the battery cell module 1 is provided with a first threaded hole 11; the separating device 2 comprises a separating body 21 and a threaded rod 22, the separating body 21 is provided with a second threaded hole, the threaded rod 22 is matched with the second threaded hole, the separating body 21 is also provided with a clamp fixing piece 214, and the clamp fixing piece 214 is used for fixing the measuring clamp on the tension detecting equipment; wherein, the welding has the mass flow dish on the battery case, and the mass flow dish is located the one end that electric core module 1 was provided with first screw hole 11, is provided with the through-hole on the mass flow dish, and threaded rod 22 passes through the through-hole and screw-thread fit with first screw hole 11.

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

It should be noted that the specific structure and working principle of the present utility model are described by taking a measuring fixture as an example, but the application of the present utility model is not limited to a measuring fixture, and the present utility model can also be applied to the production and use of other similar workpieces.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A measurement jig, comprising:

2. The measuring clamp of claim 1, wherein the separating body comprises a threaded connection portion, a clearance portion, and a fixing portion, the clearance portion connecting the threaded connection portion and the fixing portion, the second threaded hole being provided on the threaded connection portion, the clamp mount being provided on the fixing portion;

3. The measurement fixture of claim 2, wherein the rotation-assisting member comprises a screw cap and a screw rod, an end of the screw cap is disposed at an end of the threaded rod away from the battery cell module, the screw rod is disposed on a side wall of the screw cap, and wherein the end of the screw rod is provided with a blocking ball.

4. The measuring clamp of claim 1, wherein the clamp fixture comprises an insertion post for insertion into a tension sensing device, the insertion post having a pin hole provided therein for mating with a pin to secure the clamp fixture to the tension sensing device.

5. The measuring clamp of claim 4, wherein the clamp mount further comprises a latch that is disposed around the insert post, the latch being threadably coupled to the insert post sidewall.

6. The measuring clamp of claim 5, wherein the side walls of the lock catch are provided with anti-slip patterns, and the side walls of the lock catch are provided with anti-slip notches at intervals.

7. The measurement fixture of claim 1, wherein a maximum outer diameter of said cell module is the same as said battery housing inner diameter.

8. The measurement jig of claim 7, wherein an outer diameter of an end of the cell module where the first threaded hole is provided is smaller than an inner diameter of the cell housing.

9. The measurement jig of claim 7, wherein the cell module is provided with a vent slot in a sidewall of the largest outer diameter.

10. The measurement fixture of claim 1, wherein said cell module is provided with vent holes communicating two ends.