CN219200366U - Cell length measuring device - Google Patents

Abstract

The utility model discloses a cell length measuring device which is characterized by comprising a base, a fixing component and a measuring component, wherein the base is provided with a plurality of fixing holes; the base is provided with a groove for accommodating the battery cell to be tested; the fixing component is movably connected with the groove, and can move in the groove along the width direction of the battery cell to be tested so as to fix the battery cell to be tested in the groove; the measuring assembly is movably connected to the base, and can move on the base along the length direction of the battery cell to be measured so as to measure the length of the battery cell to be measured, which is positioned in the groove. Therefore, on one hand, the electric core to be measured with different widths can be fixed, the universality of the electric core measuring device is improved, on the other hand, the need of manually measuring by using a caliper is avoided, the measuring efficiency and accuracy are improved, and the labor cost is reduced.

Description

Cell length measuring device

Technical Field

The utility model relates to the technical field of cell measurement, in particular to a cell length measurement device.

Background

At present, in the field of battery cells, the sizes of the battery cells are diversified, and along with the requirements of people on the lightening and thinning of electronic products, the battery cells are required to be thinner and thinner, and the size of the battery cells is smaller and smaller, so that the management and control of the sizes of the battery cells become an increasingly important factor in the production process of the battery cells.

In the related art, in order to measure the length of the battery cell body, after the width direction of the battery cell is fixed through the jig, the length of the battery cell needs to be measured through the vernier caliper, but the universality of the existing jig is poor, when the length of the battery cell with different widths is measured, the battery cell with different widths needs to be compatible by replacing a new jig, so that the cost is wasted, the measuring result is greatly influenced by human factors, and the measuring efficiency is low.

Disclosure of Invention

The utility model aims to provide a cell length measuring device which at least solves one of the problems that the jig of the cell length measuring device in the related art is poor in universality and the measuring result is greatly influenced by human factors.

In order to solve the technical problems, the utility model is realized as follows:

the embodiment of the utility model provides a battery cell length measuring device, which comprises a base, a fixing component and a measuring component, wherein the fixing component is arranged on the base;

the base is provided with a groove for accommodating the battery cell to be tested; the fixing component is movably connected with the groove, and can move in the groove along the width direction of the battery cell to be tested so as to fix the battery cell to be tested in the groove;

the measuring assembly is movably connected to the base, and can move on the base along the length direction of the battery cell to be measured so as to measure the length of the battery cell to be measured, which is positioned in the groove. Optionally, a plurality of connection positions are arranged in the groove along the width direction of the to-be-measured battery cell at intervals, and the fixing component is detachably connected with the connection positions so as to adjust the distance between the fixing component and the to-be-measured battery cell in the width direction of the to-be-measured battery cell.

Optionally, the fixing assembly includes: the device comprises a fixed block body, a guide post, a spring and a push block;

the fixed block body is movably connected with the groove and detachably connected with the connecting position, the guide post is connected with the fixed block body, a through hole is formed in the push block, the through hole is sleeved outside the guide post and can slide along the guide post, the spring is connected between the fixed block body and the push block, and is sleeved outside the guide post, and the push block is abutted to the battery cell to be tested under the action of the spring.

Optionally, the cell length measurement device further includes a fastener, a first threaded hole is formed in the fixing block body, a plurality of second threaded holes are formed in the connecting position, and the fastener penetrates through the first threaded hole and the second threaded holes.

Optionally, the base is provided with a guide rod and a slide rail;

the guide rod and the sliding rail are respectively and fixedly connected to two sides of the base, the extending directions of the guide rod and the sliding rail are consistent with the length direction of the battery cell to be tested, the measuring assembly is in sliding connection with the guide rod and the sliding rail, and the measuring assembly can slide along the length direction of the battery cell to be tested. Optionally, the measurement assembly includes: a connection plate and a displacement detector;

the displacement detector is connected with the guide rod in a sliding manner, one end of the connecting plate is connected with the displacement detector, the other end of the connecting plate is connected with the sliding rail in a sliding manner, the connecting plate can slide along the length direction of the battery cell to be tested, and the displacement detector is used for detecting the displacement of the connecting plate.

Optionally, the measurement assembly further comprises: the positioning block is connected to one end, close to the head of the battery cell, of the connecting plate, and the connecting plate is abutted to the head of the battery cell to be tested through the positioning block.

Optionally, the measurement assembly further comprises: the digital display meter is electrically connected with the displacement detector and is used for displaying the length of the battery cell to be measured, which is measured by the displacement detector.

Optionally, the measuring assembly further comprises a connecting piece, which is connected with the displacement detector and the connecting plate, respectively.

Optionally, the base further includes a foot pad, and the foot pad is disposed on a side of the base away from the groove.

Compared with the prior art, the cell length measuring device provided by the utility model has at least the following advantages:

in the embodiment of the utility model, the cell length measuring device comprises a base, a fixing component and a measuring component; the base is provided with a groove for accommodating the battery cell to be tested; the fixing component is movably connected with the groove, and can move in the groove along the width direction of the battery cell to be tested so as to fix the battery cell to be tested in the groove; the measuring assembly is movably connected to the base, and can move on the base along the length direction of the battery cell to be measured so as to measure the length of the battery cell to be measured, which is positioned in the groove. Adopt such electric core length measuring device, on the one hand can follow through fixed subassembly the width direction of electric core that awaits measuring is in the recess is interior to the fixed of electric core that awaits measuring of adaptation different width need not to change the tool, has improved electric core measuring device's commonality, on the other hand can follow through the measuring subassembly the length direction of electric core that awaits measuring removes, is located the length of electric core that awaits measuring in the recess is measured, has avoided the manual work to utilize the slide caliper rule to measure, has improved measurement of efficiency and accuracy, has reduced the cost of labor. Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a cell length measurement apparatus according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a cell length measurement device according to an embodiment of the present utility model;

FIG. 3 is a schematic illustration of a stationary assembly of a cell length measurement device according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a measurement assembly of a cell length measurement device according to an embodiment of the present utility model;

fig. 5 is a measurement cross-sectional view of a cell length measurement device according to an embodiment of the present utility model.

Reference numerals:

10-a base; 20-fixing the assembly; 30-a measurement assembly; 40-a cell to be tested; 101-grooves; 102-a connection site; 103-foot pad; 201-a fixed block body; 202-a guide post; 203-a spring; 204-pushing blocks; 2011-a first threaded hole; 1021-a second threaded hole; 2041-through holes; 301-a guide rod; 302-a slide rail; 303-connecting plates; 304-a displacement detector; 305-positioning blocks; 306-a connecting piece; 307-digital display table.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. 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 features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate or are based on the orientation or relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following describes a cell length measurement device according to an embodiment of the present utility model in detail with reference to the accompanying drawings.

Referring to fig. 1 to 5, schematic diagrams of a device for measuring a length of a battery cell according to the present utility model are shown, and as shown in fig. 1 to 5, the device for measuring a length of a battery cell includes a base 10, a fixing component 20 and a measuring component 30, the base 10 is provided with a groove 101 for accommodating the battery cell 40 to be measured, the fixing component 20 is movably connected to the groove 101, the fixing component 20 can move in the groove 101 along a width direction of the battery cell 40 to be measured so as to fix the battery cell 40 to be measured in the groove 101, the measuring component 30 is movably connected to the base 10, and the measuring component 30 can move on the base 10 along a length direction of the battery cell 40 to be measured so as to measure a length of the battery cell 40 to be measured located in the groove 101. Adopt such electric core length measuring device, on the one hand can follow through fixed subassembly the width direction of electric core that awaits measuring is in the recess is interior to the fixed of electric core that awaits measuring of adaptation different width need not to change the tool, has improved electric core measuring device's commonality, on the other hand can follow through the measuring subassembly the length direction of electric core that awaits measuring removes, is located the length of electric core that awaits measuring in the recess is measured, has avoided the manual work to utilize the slide caliper rule to measure, has improved measurement of efficiency and accuracy, has reduced the cost of labor.

Specifically, in the embodiment of the present utility model, the base 10 is a rectangular base, the base 10 is provided with a groove 101, the groove 101 is a rectangular groove, and the rectangular groove includes a long side and a short side that are perpendicular to each other, where the length of the long side is greater than the length of the to-be-tested battery cell 40, and the length of the short side is greater than the width of the to-be-tested battery cell 40. One corner in the rectangular groove is provided with a target measurement position, the to-be-measured cell 40 is arranged in the target measurement position in the rectangular groove, the length direction of the to-be-measured cell 40 is consistent with the long side direction of the rectangular groove, and the width direction of the to-be-measured cell 40 is consistent with the short side direction of the rectangular groove. The to-be-measured cell 40 comprises a head, a tail, a first side and a second side, wherein the head and the tail are oppositely arranged along the length direction of the to-be-measured cell 40, the first side and the second side are oppositely arranged along the width direction of the to-be-measured cell 40, the first side of the to-be-measured cell 40 is abutted to a long side of the groove 101 and parallel to the long side, and the tail of the to-be-measured cell is abutted to a short side of the groove 101 and parallel to the short side, wherein the long side of the to-be-measured cell 40 is connected with the short side and is mutually perpendicular. The depth of the groove 101 is consistent with the thickness of the cell 40 to be tested.

The fixing component 20 is connected to the groove 101, the fixing component 20 is located at an inner side of the groove 101 near the second side of the to-be-measured cell 40, and the fixing component 20 can move in the groove 101 along the width direction of the to-be-measured cell 40, and the fixing component 20 can abut against the second side of the to-be-measured cell 40 to fix the to-be-measured cell 40 at the target measurement position. Under the condition that the widths of the battery cells 40 to be tested are different, the fixing assembly 20 can adjust the position in the groove 101 to adjust the distance between the fixing assembly 20 and the other inner side opposite to the groove 101 so as to adapt to the battery cells 40 to be tested with different widths. The measuring assembly 30 is movably connected with the base 10, the measuring assembly 30 is located at one side far away from the tail of the battery cell 40 to be measured, and the measuring assembly 30 can move on the base 10 along the length direction of the battery cell 40 to be measured relative to the battery cell 40 to be measured located at the target measuring position until the measuring assembly is abutted to the head of the battery cell 40 to be measured, so that the length of the battery cell 40 to be measured is determined by detecting the displacement of the measuring assembly 30.

Optionally, in the embodiment of the present utility model, a plurality of connection sites 102 are disposed in the groove 101 at intervals along the width direction of the to-be-measured cell 40, and the fixing assembly 20 is detachably connected with the connection sites 102, so as to adjust the distance between the fixing assembly 20 and the to-be-measured cell 40 in the width direction of the to-be-measured cell 40. Therefore, the fixing assembly can be connected to different connecting positions to adapt to the fixation of the battery cells to be measured with different widths, and the universality of the battery cell length measuring device is improved.

Specifically, because the sizes of the electrical cores on the market are different, the problem of measuring the lengths of the electrical cores to be measured with different widths is faced, in the embodiment of the utility model, a plurality of connection positions 102 are arranged in the groove 101 of the base 10, the plurality of connection positions 102 are arranged at an inner side of the groove 101, which is close to the second side of the electrical core to be measured 40, and the plurality of connection positions 102 are arranged at intervals along the width direction of the electrical core to be measured 40, and the fixing assembly 20 can be connected with the target connection positions in the different connection positions 102 according to the different widths of the electrical core to be measured 40 and is abutted with the second side of the electrical core to be measured 40, so that the electrical core to be measured 40 is fixed at the target measurement position, thereby adapting to the fixation of the electrical core to be measured 40 with different widths. The target connection position is a connection position where the fixing component 20 can abut against the second side of the to-be-measured cell 40, so that the to-be-measured cell 40 is fixed to the target measurement position along the width direction of the to-be-measured cell 40. The fixing assembly 20 and the connection position 102 may be connected by a threaded connection.

Optionally, referring to fig. 3, the fixing assembly 20 includes a fixing block body 201, a guide post 202, a spring 203 and a push block 204, where the fixing block body 201 is movably connected to the groove 101 and detachably connected to the connection site 102, the guide post 202 is connected to the fixing block body 201, a through hole 2041 is formed in the push block 204, the through hole 2041 is sleeved outside the guide post 202, the push block 204 can slide along the guide post 202, the spring 203 is connected between the fixing block body 201 and the push block 204, and is sleeved outside the guide post 202, and the push block 204 is abutted to the cell 40 to be tested under the action of the spring 203. Like this, through the cooperation connection of ejector pad, spring, guide post, can realize the fine setting of small circle to fixed subassembly for fixed subassembly is finer to the fixed of the electric core that awaits measuring of different width, realizes the stepless adaptation to the electric core that awaits measuring of different width.

Specifically, in the embodiment of the present utility model, the fixing assembly 20 includes a fixing block body 201, a guide post 202, a spring 203, and a push block 204. The fixing block body 201 is movably connected to the groove 101 and detachably connected to the connection position 102. The guide post 202 is fixedly connected to the fixed block body 201, a spring 203 is sleeved on the outer side of the guide post 202, and one end of the spring 203 is connected with the fixed block body 201. The push block 204 is movably connected to the guide post 202 and is connected to the other end of the spring 203, a through hole 2041 is formed in the push block 204, the position of the through hole 2041 corresponds to the guide post 202, and the size of the through hole 2041 is slightly larger than the cross-sectional size of the guide post 202, so that the guide post 202 can be partially inserted into the through hole 2041, and the push block 204 can be sleeved on the guide post 202 and can move along the extending direction of the guide post 202. In a relaxed state of the spring 203, an end of the guide post 202 connected to the push block 204 is located at a middle position in the through hole 2041, and an end of the guide post 202 can move in the through hole 2041 and is not exposed to the through hole 2041. When the to-be-measured cell 40 needs to be fixed, the push block 204 of the fixing component 20 is abutted to the second side of the to-be-measured cell 40, the spring 203 is pressed, the push block 204 is pressed to be abutted to the to-be-measured cell 40, and then the fixing block body 201 is fixedly connected to a proper connection position, so that the to-be-measured cell 40 is fixed.

The number of the guide posts 202 may be two, the two guide posts 202 are arranged at intervals, the number of the springs 203 is the same as the number of the guide posts 202, and in the case that the number of the guide posts 202 is two, each guide post 202 is sleeved with one spring 203, and the number of the through holes 2041 on the push block 204 is also two and is respectively corresponding to the two guide posts 202.

Optionally, in this embodiment of the present utility model, the device for measuring a length of a battery cell further includes a fastener, a first threaded hole 2011 is formed in the fixed block body 201, the connection locations 102 are configured as a plurality of second threaded holes 1021, and the fastener is disposed through the first threaded hole 2011 and the second threaded hole 1021. Therefore, the fixing component can be connected to the target connection position through the fastener, so that the fixing of the battery cell to be tested is realized.

Specifically, in the embodiment of the present utility model, the fixed block body 201 is provided with a first threaded hole 2011, the connection location 102 is a second threaded hole 1021, in actual operation, a target connection location adapted to the width of the to-be-measured battery cell 40 is selected according to the different widths of the to-be-measured battery cell 40, then the first threaded hole 2011 located on the fixed block body 201 is aligned with the second threaded hole 1021 located on the target connection location, and then the fixed block body 201 is connected with the target connection location through the first threaded hole 2011 and the second threaded hole 1021 respectively through fasteners.

The number of the first screw holes 2011 may be two, the two first screw holes 2011 are spaced apart, the number of the second screw holes 1021 is the same as the number of the first screw holes 2011, and the spacing distance is the same, so that the first screw holes 2011 and the second screw holes 1021 may be aligned when fixed by the fastener.

In practice, the fasteners may be bolts, screws, etc., without limitation.

Optionally, in the embodiment of the present utility model, the base 10 is provided with a guide rod 301 and a slide rail 302, the guide rod 301 and the slide rail 301 are respectively and fixedly connected to two sides of the base 10, the extending directions of the guide rod 301 and the slide rail 301 are consistent with the length direction of the battery cell 40 to be tested, and the measuring assembly 30 is respectively and slidably connected with the guide rod 301 and the slide rail 302. Therefore, the movable connection between the measuring assembly and the base can be realized by arranging the guide rod and the slide rail on two sides of the base respectively.

Specifically, referring to fig. 2, in an embodiment of the present utility model, the base 10 includes a first surface and a second surface that are disposed opposite to each other, where the first surface is a surface on which the groove 101 is formed. The first surface comprises a first side and a second side which are opposite, two ends of the guide rod 301 are fixedly connected to the first side of the first surface, the sliding rail 302 is fixedly connected to the second side of the first surface, and the guide rod 301 and the sliding rail 302 are both arranged to avoid the groove 101. The extending directions of the guide rod 301 and the sliding rail 302 are consistent with the length direction of the battery cell 40 to be tested, one end of the measuring assembly 30 is in sliding connection with the guide rod 301, the other end of the measuring assembly 30 is in sliding connection with the sliding rail 302, and the sliding direction of the measuring assembly 30 is consistent with the length direction of the battery cell 40 to be tested.

In practical applications, the connection manner between the guide rod 301 and the slide rail 302 and the base 10 may be a threaded connection, and specifically, the guide rod 301 and the slide rail 302 may be connected to the base 10 by using fasteners such as screws, bolts, and the like.

Optionally, in the embodiment of the present utility model, the measurement assembly 30 includes a connection board 303 and a displacement detector 304, the displacement detector 304 is slidably connected to the guide rod 301, one end of the connection board 303 is connected to the displacement detector 304, the other end of the connection board 303 is slidably connected to the slide rail 302, the connection board 303 is located at a side close to the head of the to-be-measured cell 40, the connection board 303 can slide along the length direction of the to-be-measured cell 40 so as to be abutted to the head of the to-be-measured cell 40, and the displacement detector 304 is used for detecting the displacement of the connection board 303. Therefore, the length of the battery cell to be measured can be determined by sliding the connecting plate in the length direction of the battery cell to be measured and detecting the displacement of the connecting plate through the displacement detector.

Specifically, referring to fig. 2, in the embodiment of the present utility model, a connection board 303 is connected between a guide rod 301 and a sliding rail 302, the connection board 303 is located at a side close to the head of the to-be-measured cell 40, and the connection board 303 includes a first position and a second position, where the connection board 303 can slide between the first position and the second position along the length direction of the to-be-measured cell 40, the first position is a position where the connection board 303 is far away from the tail of the to-be-measured cell 40, the first position is a fixed position, a distance between the first position and a first groove wall of the groove 101 is a first distance, the first distance is greater than the length of the to-be-measured cell 40, and the second position is a position where one end of the connection board 303 along the length direction of the to-be-measured cell 40 abuts against the head of the to-be-measured cell 40.

In the embodiment of the utility model, the displacement detector 304 is sleeved on the guide rod 301, and the displacement detector 304 can slide on the guide rod 301. A slide block is movably connected to the slide rail 302, and the slide block can slide on the slide rail. One end of the connecting plate 303 is connected with the sliding block, and the other end of the connecting plate 303 is connected with the displacement detector 304, so that the connecting plate 303 is slidably connected with the guide rod 301 and the sliding rail 302, wherein the connecting mode of the connecting plate 303 and the sliding block can be threaded connection.

In the embodiment of the present utility model, the displacement detector 304 is configured to detect the second distance of the movement of the connection board 303 from the first position to the second position, and since the first position is fixed to the first groove wall of the groove 101, the first distance is determined, and the length of the to-be-measured cell 40 can be determined by subtracting the second distance from the first distance. In this way, the connection board 303 can slide in the length direction of the to-be-measured battery cell 40 until one end of the connection board along the length direction of the to-be-measured battery cell 40 abuts against the head of the to-be-measured battery cell 40, and then the displacement distance of the connection board 303 can be detected by the displacement detector 304, so that the length of the to-be-measured battery cell 40 located at the target measurement position is determined.

In the embodiment of the present utility model, the measurement assembly 30 further includes a driving assembly, where the driving assembly may be connected to the guide rod 301 and integrated with the displacement detector 304, the driving assembly is used to drive the connection plate 303 to slide on the guide rod 301 and the sliding rail 302, and the driving assembly may drive the connection plate 303 to move from one end of the groove 101 away from the tail of the cell 40 toward the head of the cell 40 until abutting against the head of the cell 40, so as to measure the length of the cell 40.

Optionally, in the embodiment of the present utility model, the measurement assembly 30 further includes a positioning block 305, the positioning block 305 is connected to one end of the connection board 303 near the head of the to-be-measured cell 40, and the connection board 303 abuts against the head of the to-be-measured cell 40 through the positioning block 305. Thus, the head of the battery cell to be measured can be positioned through the positioning block, so that the length of the battery cell to be measured is determined.

Specifically, one end of the positioning block 305 is connected to the connection plate 303 and is located at a position between the extension lines of the first side and the second side of the to-be-measured battery cell 40, and the other end of the positioning block 305 is disposed towards the head direction of the to-be-measured battery cell 40 and is located on the same horizontal plane with the to-be-measured battery cell 40, so that the positioning block 305 can be abutted with the head of the to-be-measured battery cell 40 in the moving process of the connection plate 303, thereby measuring the length of the to-be-measured battery cell 40.

Optionally, in the embodiment of the present utility model, the measurement assembly 30 further includes a digital display meter 307, where the digital display meter 307 is electrically connected to the displacement detector 304, and the digital display meter 307 is used to display the length of the to-be-measured electrical core 40 measured by the displacement detector 304. Like this, the joining of digital display table can make measurement work simpler convenient, and it is more accurate to compare manual caliper to measure, and the operating personnel of being convenient for reads moreover, has effectively reduced the cost of labor.

Specifically, in the embodiment of the present utility model, the digital display meter 307 is integrated with the displacement detector 304 and is electrically connected with the displacement detector 304, and when the displacement detector 304 detects the length of the to-be-measured electrical core 40, the length of the to-be-measured electrical core 40 is displayed through the digital display meter 307, so that simple, convenient and accurate measurement is realized.

Optionally, in an embodiment of the present utility model, the measuring assembly 30 further comprises a connection piece 306, the connection piece 306 being connected to the displacement detector 304 and the connection plate 303, respectively.

Specifically, in the embodiment of the present utility model, the connection board 303 is connected to the displacement detector 304 through the connection piece 306, and the shape of the connection board 303 does not need to be changed so as to be connected to the displacement detector 304, so that the connection board 303 is easier to process in the manufacturing process, and is simpler and more convenient in the assembling process.

The connection mode of the connection piece 306 and the connection plate 303 may be a threaded connection, and the connection mode of the connection piece 306 and the displacement detector may also be a threaded connection.

Optionally, in an embodiment of the present utility model, the base 10 further includes a foot pad 103, and the foot pad 103 is connected to a side of the base 10 remote from the recess 101. In this way, the stability of the base can be improved.

Specifically, in the embodiment of the present utility model, the foot pad 103 is connected to the second surface of the base 10, where the second surface is a side of the base 10 away from the groove 101, the number of the foot pads 103 may be 4, and four corners of the second surface of the base 10 are respectively connected to one foot pad 103, where the foot pad 103 may be connected to the bottom of the base in a threaded manner.

In practical applications, the material of the foot pad 103 may be steel, or may be other materials such as plastic, rubber, etc., which is not limited herein.

In summary, compared with the prior art, the cell length measuring device of the utility model has at least the following advantages:

in the embodiment of the utility model, the cell length measuring device comprises a base, a fixing component and a measuring component; the base is provided with a groove for accommodating the battery cell to be measured, and a target measuring position is arranged in the groove; the fixing component is movably connected with the groove so as to fix the battery cell to be measured at the target measuring position; the measuring assembly is movably connected to the base and is used for measuring the length of the battery cell to be measured, which is located at the target measuring position. Adopt such electric core length measuring device, on the one hand can fix the electric core that awaits measuring of different width through swing joint in the fixed subassembly of base, improved electric core measuring device's commonality, on the other hand can measure through measuring the length of the electric core that awaits measuring that the subassembly is located the target measurement position, avoided needing the manual work to utilize the slide caliper rule to measure, improved measurement efficiency and accuracy, reduced the cost of labor.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The battery cell length measuring device is characterized by comprising a base, a fixing component and a measuring component;

the base is provided with a groove for accommodating the battery cell to be tested; the fixing component is movably connected with the groove, and can move in the groove along the width direction of the battery cell to be tested so as to fix the battery cell to be tested in the groove;

the measuring assembly is movably connected to the base, and can move on the base along the length direction of the battery cell to be measured so as to measure the length of the battery cell to be measured, which is positioned in the groove.

2. The device for measuring the length of a battery cell according to claim 1, wherein a plurality of connection sites are arranged in the groove at intervals along the width direction of the battery cell to be measured, and the fixing component is detachably connected with the connection sites so as to adjust the distance between the fixing component and the battery cell to be measured in the width direction of the battery cell.

3. The cell length measurement apparatus of claim 2, wherein the securing assembly comprises: the device comprises a fixed block body, a guide post, a spring and a push block;

the fixed block body is movably connected with the groove and detachably connected with the connecting position, the guide post is connected with the fixed block body, a through hole is formed in the push block, the through hole is sleeved outside the guide post and can slide along the guide post, the spring is connected between the fixed block body and the push block, and is sleeved outside the guide post, and the push block is abutted to the battery cell to be tested under the action of the spring.

4. The cell length measurement device of claim 3, further comprising a fastener, wherein the fixed block body is provided with a first threaded hole, the connection location is provided with a plurality of second threaded holes, and the fastener is disposed through the first threaded hole and the second threaded hole.

5. The cell length measurement device of claim 1, wherein the base is provided with a guide rod and a slide rail;

the guide rod and the sliding rail are respectively and fixedly connected to two sides of the base, the extending directions of the guide rod and the sliding rail are consistent with the length direction of the battery cell to be tested, the measuring assembly is slidably connected to the guide rod and the sliding rail, and the measuring assembly can slide along the length direction of the battery cell to be tested.

6. The cell length measurement apparatus of claim 5, wherein the measurement assembly comprises: a connection plate and a displacement detector;

the displacement detector is connected with the guide rod in a sliding manner, one end of the connecting plate is connected with the displacement detector, the other end of the connecting plate is connected with the sliding rail in a sliding manner, the connecting plate can slide along the length direction of the battery cell to be tested, and the displacement detector is used for detecting the displacement of the connecting plate.

7. The cell length measurement apparatus of claim 6, wherein the measurement assembly further comprises: the positioning block is connected to one end, close to the head of the battery cell to be tested, of the connecting plate, and the connecting plate is in butt joint with the head of the battery cell to be tested through the positioning block.

8. The cell length measurement apparatus of claim 7, wherein the measurement assembly further comprises: the digital display meter is electrically connected with the displacement detector and is used for displaying the length of the battery cell to be measured, which is measured by the displacement detector.

9. The cell length measurement apparatus of claim 6, wherein the measurement assembly further comprises a connection tab connected to the displacement detector and the connection plate, respectively.

10. The cell length measurement device of claim 1, wherein the base further comprises a foot pad disposed on a side of the base remote from the recess.

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