CN212007129U

CN212007129U - Battery cell measuring device

Info

Publication number: CN212007129U
Application number: CN202020717017.XU
Authority: CN
Inventors: 冯传钧; 王学飞
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-11-24
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to a check out test set makes the field, discloses an electricity core measuring device, including the objective table that is used for the fixed electric core that awaits measuring, be equipped with measuring mechanism on objective table at least three plane direction all around respectively, measuring mechanism includes respectively can the free distancer that removes at the optional position in its place plane. The utility model discloses an objective table will await measuring electric core fixedly to set up the distancer on the at least three plane direction all around of electric core that awaits measuring, accomplished in an equipment to the whole measurement of the required size of electric core that awaits measuring, including the well width of the electric core that awaits measuring, thickness, shoulder height, total height, arch and turn-ups size, degree of automation is high, effectively avoids manual operation's the difference nature and rocks the error that leads to, controls the location detection through the automation and has improved electric core size detection's efficiency and qualification rate, and the accuracy is high, and stability is good.

Description

Battery cell measuring device

Technical Field

The utility model relates to a check out test set makes technical field, specifically relates to electricity core measuring device.

Background

The demand of new energy batteries is increasing due to the rapid development of new energy automobiles, and accidents are more and more generated during production and use along with the improvement of yield, so that the improvement of the qualification rate of the new energy batteries is the most important problem in the current production process. In the automated production process of electric core, flaw inevitably appears in the size of a small part of electric core, include: bulges, poor shoulder height, poor middle width, overproof raised flanging quantity and the like. The problems not only affect the appearance of the battery pack, but also affect the assembly of the battery module in the later period, and also cause great influence on the use safety of the power battery. In view of this, before the battery cell is taken out of the warehouse, the size detection must be performed, and the product problem can be found timely and accurately to ensure the qualified rate of the external dimension of the battery cell. In the prior art, the measurement of the cell size is mainly completed by manually using a measuring tool, and the manual measurement mode not only influences the product yield due to low efficiency of manual operation under the condition of mass production, but also causes misjudgment due to easy fatigue of detection personnel after long-time work, and the objectivity and accuracy of a judgment result are influenced due to the individual difference of the detection personnel in manual detection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that the artifical detection accuracy that prior art exists is poor, inefficiency, provide electric core measuring device, it is fixed with the electric core that awaits measuring through the objective table to set up the distancer on the electric core at least three plane direction all around that awaits measuring, detect well width, thickness, shoulder height, total height, arch and the turn-ups of electric core that awaits measuring, control the location through the automation and detect the efficiency and the qualification rate that have improved electric core size detection.

In order to achieve the above object, an aspect of the present invention provides an electrical core measuring device, including the objective table used for fixing the electrical core to be measured, at least three plane directions around the objective table are respectively provided with a measuring mechanism, the measuring mechanism includes a distance meter which can be freely moved at any position in the plane where the measuring mechanism is located.

Preferably, the object stage comprises a bottom plate, a vertical plate and a side plate which are mutually vertical in pairs, a frame is arranged on the periphery of the object stage, and the frame forms a top surface, a vertical surface and a side surface which are respectively parallel to the bottom plate, the vertical plate and the side plate; the distance measuring instrument is respectively and freely movable in the top surface, the vertical surface and the side surface.

Preferably, the measuring mechanism comprises a first servo motor for driving the distance measuring instrument to move along a first direction in a plane in which the distance measuring instrument is located, and a second servo motor for driving the distance measuring instrument to move along a second direction in the plane in which the distance measuring instrument is located, wherein the first direction and the second direction are perpendicular to each other.

Preferably, slide rails are arranged in the first direction and the second direction, the range finder moves along the slide rails, and the moving track is any position on the top surface, the vertical surface or the side surface.

Preferably, the object stage comprises a fastening mechanism, the fastening mechanism comprises a fastening cylinder, and a clamping piece for clamping and fixing the battery cell to be tested is arranged at the end part of a cylinder rod of the fastening cylinder.

Preferably, the fastening mechanism is disposed in two directions opposite to the vertical plate and the side plate of the stage.

Preferably, the top surface of the frame is provided with a grabbing mechanism, the grabbing mechanism comprises a grabbing cylinder, and the end part of a cylinder rod of the grabbing cylinder is provided with a manipulator for grabbing and releasing the battery cell to be tested.

Preferably, the battery cell measuring device comprises a control center, and the control center is respectively connected with the first servo motor, the second servo motor, the fastening mechanism or the grabbing mechanism through control signals for communication.

Preferably, the control center includes a data processing unit therein, the distance meter outputs the measurement data to the data processing unit, and the data processing unit processes the measurement data and outputs the measurement result.

Preferably, the battery cell measuring device comprises a display, and the display is connected with the data processing unit and displays the measurement result.

Through the technical scheme, the utility model discloses an objective table will await measuring electric core fixed to set up the distancer on the electric core at least three plane direction all around that awaits measuring, detect well width, thickness, shoulder height, total height, arch and the turn-ups of electric core that awaits measuring, control the location through the automation and detect the efficiency and the qualification rate that have improved electric core size detection.

Drawings

Fig. 1 is a schematic view of an overall structure of a cell measurement apparatus according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the overall structure of a battery cell to be tested;

FIG. 3 is a schematic view of a portion of A in FIG. 2;

FIG. 4 is a schematic view of the overall structure of the stage of FIG. 1;

fig. 5 is a schematic view of an overall structure of a cell measurement device according to another embodiment of the present invention;

fig. 6 and fig. 7 are schematic diagrams of the object stage with no cell to be tested placed thereon and with the cell to be tested placed thereon, respectively.

Description of the reference numerals

100 object stage 110 bottom plate 120 vertical plate 130 side plate 200 to be tested electric core 210 welding 220 electric core pole 230 electric core cover plate 300 range finder 301 first servo motor 302 second servo motor 400 frame 410 top surface 420 elevation 421 slide rail 430 side 500 fastening mechanism 510 fastens air cylinder 520 air cylinder rod 530 clamping plate 600 control center 610 data processing unit 700 distance between L1 range finder self position in display L to distance between side plate self position L2 range finder self position to side of to be tested electric core distance D thickness H shoulder height H1 total height T protrusion F flanging edge

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.

Example one

As shown in fig. 1, the utility model provides an electric core measuring device, including the objective table 100 that is used for fixed electric core 200 that awaits measuring be equipped with measuring mechanism on the at least three plane direction all around of objective table 100 respectively, measuring mechanism includes respectively can freely move at the optional position in its place plane distancer 300. It can be known from the above, the utility model discloses an objective table 100 is fixed with the electric core 200 that awaits measuring to set up distancer 300 in the at least three plane direction all around of the electric core 200 that awaits measuring, detect well width, thickness, shoulder height, total height, arch and the turn-ups of electric core 200 that awaits measuring, control the location through the automation and detect the efficiency and the qualification rate that have improved electric core size detection.

As shown in fig. 2 and with reference to fig. 3, it should be noted that the size of the electric core 200 to be measured, which needs to be measured by the electric core measuring device provided by the present invention, includes: medium width L, thickness D, shoulder height H, overall height H1, projection T, and cuff F. Hereinafter, the dimension positions to be measured will be described one by one, because the electrical core 200 to be measured has a rectangular parallelepiped shape, wherein,

medium width L: the distance between two side planes with smaller areas of the rectangular battery cell is shorter;

thickness D: the distance between two side planes with larger areas of the rectangular battery cell is larger;

shoulder height H: the distance from the top surface of the cell cover plate 230 to the bottom of the cell;

total height H1: the distance from the upper surface of the cell post 220 to the bottom of the cell;

a protrusion T: the height of the welding pool relative to the plane of the cover plate in the vertical direction after welding the cell cover plate 230;

and F, flanging: the height of the welding pool relative to the plane of the casing in the horizontal direction after welding the cell cover plate 230.

As shown in fig. 3, since the cover plate of the cell is welded to the top surface of the cell by four sides, a weld 210 is formed around the top surface, i.e., the position of the weld pool. The projections T and the flanges F actually refer to the dimension of the weld 210 above the top of the lid and wider than the sides of the lid.

As shown in fig. 1 in combination with fig. 4, the stage 100 includes a bottom plate 110, a vertical plate 120, and a side plate 130, which are perpendicular to each other in pairs, to form a cube corner structure; the object stage 100 is provided with a frame 400 at the periphery thereof, and the frame 400 forms a top surface 410, a vertical surface 420 and a side surface 430 which are parallel to the bottom plate 110, the vertical plate 120 and the side plate 130. As shown in FIG. 1, for ease of movement and measurement, the projection of stage 100 onto the bottom surface of frame 400 is positioned to the upper left of the bottom surface, spaced from top surface 410, facade 420, and side surface 430 on which rangefinder 300 is positioned. The rangefinder 300 is freely movable within the top surface 410, the riser 420 and the side surface 430, respectively. In this embodiment, the distance measuring instrument 300 is a laser distance measuring instrument, in order to prevent the light of the object stage 100 from blocking or interfering the distance measuring instrument 300 on the basis of effectively positioning the electric core 200 to be measured, thereby affecting the measurement of the size of the electric core 200 to be measured, the length and the width of the bottom plate 110 of the object stage 100 are greater than the length and the width of the bottom surface of the electric core 200 to be measured, the length of the side plate 130 of the object stage 100 is greater than the length of the side surface of the electric core 200 to be measured, but the height of the vertical plate 120 of the object stage 100 is less than the shoulder height of the electric core 200 to be measured, so as to measure the.

Specifically, the measuring mechanism includes a first servo motor 301 for driving the distance meter 300 to move in a first direction in a plane in which the distance meter is located, and a second servo motor 302 for driving the distance meter 300 to move in a second direction in the plane in which the distance meter is located, wherein the first direction and the second direction are perpendicular to each other. In the embodiment shown in fig. 1, first servomotor 301 drives rangefinder 300 in a vertical direction on facade 420, and second servomotor 302 drives rangefinder 300 in a horizontal direction on facade 420. More specifically, the first direction and the second direction are both provided with a slide rail 421, and the distance meter 300 moves along the slide rail 421, and the moving track is any position on the vertical surface 420. In practical applications, the sliding rail 421 can take various structural forms, such as: in the embodiment shown in fig. 1, the first servo motor 301 drives the distance meter 300 to move along the lead screw slide rail arranged in the vertical direction, meanwhile, the first servo motor 301 and the lead screw slide rail arranged in the vertical direction may also be taken as a whole, and the first servo motor 301 and the lead screw slide rail arranged in the vertical direction are driven by the second servo motor 302 to move along the lead screw slide rail arranged in the horizontal direction, and the combination of the two movements enables the distance meter 300 to stay at any position on the plane where the vertical surface 420 is located to automatically measure the electric core 200 to be measured.

As shown in fig. 4, in order to prevent the cell 200 to be measured from moving during the measurement process and causing inaccurate measurement results, the stage 100 further includes a fastening mechanism 500, the fastening mechanism 500 includes a fastening cylinder 510, and a clamping piece 530 for clamping and fixing the cell 200 to be measured is disposed at an end of a cylinder rod 520 of the fastening cylinder 510. In order to ensure that the battery cell 200 to be tested is stably fixed in position in different directions, the fastening mechanism 500 is disposed in two directions opposite to the vertical plate 120 and the side plate 130 of the object stage 100. That is, the fastening mechanisms 500 are respectively provided on the opposite sides of the vertical plate 120 and the side plate 130 of the stage 100.

In addition, in order to realize full automation of the operation and facilitate the placement of the electrical core 200 to be measured into the electrical core measuring device, the top surface of the frame 400 may further be provided with a grabbing mechanism (not shown in the figure), the grabbing mechanism includes a grabbing cylinder, and a manipulator for grabbing and releasing the electrical core 200 to be measured is disposed at an end of a cylinder rod of the grabbing cylinder. The gripping and releasing of the battery cell 200 to be measured can be realized by the gripping mechanism before the measurement is started and after the measurement is completed.

Example two

Compared with the previous embodiment, in the embodiment shown in fig. 5, the structure of the frame 400 is different from that of the previous embodiment, in the present embodiment, the frame 400 is a complete frame including twelve frames, and compared with the previous embodiment, the stability of the frame 400 in the present embodiment is enhanced, and the walking of the distance measuring instrument 300 during the measurement process is more stable. It should be noted that, because the volume and the weight of the distance measuring device 300 are both relatively small, and the main purpose of the frame 400 is to provide a guide rail for facilitating the movement of the distance measuring device 300, and the frame 400 is not a solid structure, the overall weight of the frame 400 is also relatively small, and in the first embodiment, although the frame is not a complete frame and cannot be fixed by means of the symmetrical structure of the frame itself, the frame on the bottom surface of the frame 400 is only required to be stably fixed. Obviously, in the inner space enclosed by the complete frame of the present embodiment, enough space is left between the frame and the object stage 100 to facilitate the grabbing mechanism to perform the loading and unloading actions. In the present embodiment, the movement and measurement of the distance meter 300 are the same as those of the first embodiment, except that the number and positions of the frames constituting the frame 400 are different from those of the first embodiment.

With reference to fig. 5, in another embodiment of the present invention, the battery cell measuring apparatus further includes a control center 600, the control center 600 is respectively connected to all the servo motors, and simultaneously, the control center is further connected to the fastening mechanism 500 and the grasping mechanism via control signals. Control center 600 control servo motor's the play close, fastening device's the clamp tightly with loosen, snatch snatching and releasing of mechanism to control and coordinate the action front and back order between each mechanism, above-mentioned control process belongs to control method, can realize through the method of programming, and is not the utility model discloses the key of protection, no longer give unnecessary details here.

In addition, the control center 600 further includes a data processing unit 610, the distance meter 300 outputs the measurement data to the data processing unit 610, and the data processing unit 610 processes the measurement data and outputs the measurement result. In order to facilitate the examination of the detection result, the cell measurement apparatus includes a display 700, and the display 700 is connected to the data processing unit 610 and displays the measurement result.

As shown in fig. 6 and fig. 7, the following takes the measurement of the medium width L of the electric core 200 to be measured as an example, and the measurement process of the present invention is briefly described.

Specifically, in the embodiment shown in fig. 6 and 7, the distance meter 300 is a laser distance meter which measures by recording the distance between the light emitting point of the distance meter and the position of the obstacle blocking the laser light. The movement of the distance measuring instruments 300 arranged in different plane directions in the plane respectively measures the distance change of the corresponding position on each measurement object stage 100 before the cell 200 to be measured is placed and after the cell 200 to be measured is placed, and calculates the difference value to obtain the corresponding dimension to be measured. Further, as shown in fig. 6, when the battery cell 200 to be measured is not placed in the stage 100 of the battery cell measuring apparatus, under the combined action of the first servomotor 301 and the second servomotor 302, the distance meter 300 moves to a suitable measuring position, and determines a point where distance measurement is desired. At this point, the light emitted from the range finder 300 may directly contact the inner side surface of the side plate 130 of the stage 100. After the spot location is determined, the distance meter 300 measures a distance L1 from its own position to the side plate 130 of the stage 100, and records the measured value of L1 in the data processing unit 610. The control center 600 controls the grabbing mechanism to grab the to-be-detected battery cell 200 to the upper side of the object stage 100, move downwards and release the to-be-detected battery cell 200, the to-be-detected battery cell 200 is arranged on the bottom plate 110 of the object stage 100, at the moment, the battery cell measuring device detects the to-be-detected battery cell 200 on the object stage 100, the control center 600 controls the fastening mechanisms 500 which are respectively arranged on the opposite sides of the vertical plate 120 and the side plate 130 of the object stage 100, the fastening air cylinder 510 drives the air cylinder rod 520 to extend, and the clamping pieces 530 arranged at the end part of the air cylinder rod 520 clamp and fix the to-be-detected battery cell 200 on the object. The point is such that the light emitted from the distance meter 300 can directly contact the side of the cell 200 to be measured perpendicular to the light emitting direction and closest to the distance meter 300, the distance from the position of the side to be measured to the side of the cell 200 to be measured is L2, and the measured value of L2 is recorded in the data processing unit 610. The data processing unit 610 calculates a difference between the two measurement values, that is, the middle width L of the battery cell 200 to be measured is measured, that is: L-L1-L2. The measured calculation result is transmitted to the display 700 through the data processing unit 610 and displayed. Of course, in order to ensure more accurate measurement data, the distance meter 300 may move to different positions through the combined action of the first servo motor 301 and the second servo motor 302, so that the light emitted therefrom may directly contact a plurality of suitable measurement points on the same surface of the electrical core 200 to be measured, and after a plurality of measurements, the average value is selected as the measurement result.

It should be noted that, because the two mutually perpendicular bottom plates 110, vertical plates 120 and side plates 130 in the object stage 100 form a cube corner structure, and the height of the cube corner structure is lower than that of the electrical core 200 to be measured, when the measured position is not higher than that of the object stage 100, the distance meter 300 may measure the distance difference between the electrical core 200 not placed with the electrical core 200 to be measured and the electrical core 200 already placed with the electrical core 200 to be measured at the same position, as described in the above embodiment, to obtain the size of the corresponding position of the electrical core 200 to be measured. When the size of the object stage 100 including the total height H1, the protrusion T and the flange F needs to be measured, the distance measuring instrument 300 needs to be moved to a proper measuring position under the combined action of the first servo motor 301 and the second servo motor 302 in different measuring steps, and after the point position to be measured is determined, the measurement is started.

By the above-described method, the middle width L, the thickness D, the shoulder height H, and the total height H1 can be measured using the distance meters 300 respectively disposed on the top surface 410, the elevation surface 420, and the side surface 430 of the frame 400. As shown in fig. 3, for the raised edge T and the raised edge F, the measurement result cannot be directly obtained by the above method, but the dimension of the raised edge F or the raised edge T can be obtained by subtracting the middle width L or the shoulder height H from the measurement result. In addition, two test tracks can be respectively preset on the upper side and the lower side of the welding seam 210, the preset test tracks pay attention to avoiding the welding seam 210, and after the measurement, the difference value of the two tracks is the size of the flanging F of the electric core to be measured. The two methods for measuring the flanging F can be selected according to actual measurement requirements.

According to the above content, the utility model discloses an objective table is fixed with the electric core that awaits measuring to set up the distancer on the electric core that awaits measuring three at least plane direction all around, accomplished whole measurement to the required size of electric core that awaits measuring in an equipment, including the well width of the electric core that awaits measuring, thickness, shoulder height, total height, arch and turn-ups size, degree of automation is high, effectively avoids manual operation's the difference and rocks the error that leads to, controls the location through the automation and detects efficiency and the qualification rate that has improved electric core size detection, and the accuracy is high, and stability is good.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The utility model discloses an in the technical conception scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, for example, in order to improve measuring accuracy, can select the quantity and the position that set up of distancer as required, can all set up the distancer all around with on five planes of top surface, also can set up a plurality of distancers that can freely remove on same plane simultaneously. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides an electricity core measuring device, its characterized in that includes objective table (100) that is used for fixed electric core (200) of awaiting measuring, be equipped with measuring mechanism respectively in at least three plane direction around objective table (100), measuring mechanism includes respectively in its plane optional position can freely move distancer (300).

2. The battery cell measurement device according to claim 1, wherein the object stage (100) comprises a bottom plate (110), a vertical plate (120) and a side plate (130) which are perpendicular to each other in pairs, a frame (400) is arranged at the periphery of the object stage (100), and the frame (400) forms a top surface (410), a vertical surface (420) and a side surface (430) which are parallel to the bottom plate (110), the vertical plate (120) and the side plate (130), respectively; the distance measuring instrument (300) is freely movable in the top surface (410), the vertical surface (420) and the side surface (430) correspondingly.

3. The cell measurement device according to claim 2, wherein the measurement mechanism comprises a first servo motor (301) for driving the distance meter (300) to move in a first direction in a plane in which the distance meter is located, and a second servo motor (302) for driving the distance meter (300) to move in a second direction in the plane in which the distance meter is located, and the first direction and the second direction are perpendicular to each other.

4. The battery cell measurement device of claim 3, wherein a sliding rail (421) is provided in each of the first direction and the second direction, and the distance meter (300) moves along the sliding rail (421) along any position on the top surface (410), the vertical surface (420), or the side surface (430).

5. The battery cell measurement device according to claim 3, wherein the object stage (100) comprises a fastening mechanism (500), the fastening mechanism (500) comprises a fastening cylinder (510), and a clamping piece (530) for clamping and fixing the battery cell (200) to be measured is arranged at an end of a cylinder rod (520) of the fastening cylinder (510).

6. The cell measurement device according to claim 5, characterized in that the fastening mechanism (500) is disposed in two directions opposite to the vertical plate (120) and side plate (130) of the stage (100).

7. The battery cell measuring device according to claim 3, wherein the top surface of the frame (400) is provided with a grabbing mechanism, the grabbing mechanism comprises a grabbing cylinder, and the end of a cylinder rod of the grabbing cylinder is provided with a manipulator for grabbing and releasing the battery cell to be measured.

8. The cell measurement device according to claim 5, characterized in that the cell measurement device comprises a control center (600), and the control center (600) is respectively connected and communicated with the first servomotor (301), the second servomotor (302), and the fastening mechanism (500) through control signals.

9. The battery cell measurement device according to claim 7, wherein the battery cell measurement device comprises a control center (600), and the control center (600) is respectively connected and communicated with the first servo motor (301), the second servo motor (302) and the grabbing mechanism through control signals.

10. The battery cell measurement device according to claim 8 or 9, wherein the control center (600) includes a data processing unit (610), the distance meter (300) outputs measurement data to the data processing unit (610), and the data processing unit (610) processes the measurement data and outputs a measurement result.

11. The cell measurement device according to claim 10, characterized in that it comprises a display (700), the display (700) being connected to the data processing unit (610) and displaying the measurement results.