CN214747831U - Detection device for lithium battery and lithium battery production system - Google Patents

Abstract

The application provides a detection device and lithium cell production system for lithium cell. The detection device comprises a rotating mechanism and a ray detection module. The rotating mechanism comprises a plurality of rotating arms and rotating shafts connected with one ends of the rotating arms, the rotating shafts can drive the rotating arms to rotate, bearing pieces used for bearing lithium batteries are arranged at the other ends of the rotating arms, and the bearing pieces are rotatably connected with the rotating arms; the ray detection module comprises a transmitter for emitting rays and an imager for receiving the rays and forming an image, and the transmitter and the imager are respectively arranged on two sides of the rotating mechanism along the axial direction of the rotating shaft; the rotation of the rotating arms can enable the bearing piece on each rotating arm to move between the emitter and the imager in sequence; and the rotation of the bearing piece can enable a plurality of sides and/or a plurality of corners of the lithium battery on the bearing piece to be sequentially arranged in the ray detection area. According to the scheme, the detection efficiency of the position of the lithium battery pole piece is improved.

Description

Detection device for lithium battery and lithium battery production system

Technical Field

The application relates to the field of lithium battery manufacturing, in particular to a detection device for a lithium battery and a lithium battery production system.

Background

In the production of the lithium battery, the outward extension of the negative pole piece relative to the positive pole piece can directly influence the performance of the battery; however, because the lithium ion battery is arranged in the lithium battery, direct observation cannot be carried out, and at present, four corners of the battery are mostly detected by utilizing rays. However, in the current scheme, the battery is dragged to revolve to realize the switching of the angular position, the rotating radius is large, the battery is limited by centrifugal force, the angular speed is difficult to improve, and the detection efficiency is low.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

One aim of this application lies in improving the detection efficiency to lithium-ion battery pole piece position.

In order to solve the technical problem, the following technical scheme is adopted in the application:

according to one aspect of the present application, there is provided a detection device for a lithium battery, comprising:

the rotating mechanism comprises a plurality of rotating arms and rotating shafts connected with one ends of the rotating arms, the rotating shafts can drive the rotating arms to rotate, bearing parts used for bearing lithium batteries are arranged at the other ends of the rotating arms, and the bearing parts are rotatably connected with the rotating arms;

the ray detection module comprises a transmitter for emitting rays and an imager for receiving the rays and forming an image, and the transmitter and the imager are respectively arranged on two sides of the rotating mechanism along the axial direction of the rotating shaft;

the rotation of the rotating arms can enable the bearing piece on each rotating arm to sequentially move between the emitter and the imager; and the autorotation of the bearing piece can sequentially place a plurality of side parts and/or a plurality of corner parts of the lithium battery on the bearing piece in the ray detection area.

According to an embodiment of the present application, the detection device includes a first driving component for driving the rotation shaft to rotate; along rotary mechanism's direction of rotation, every two adjacent the sequencing of the contained angle between the swinging boom is first sequence, first drive assembly control the rotation axis rotates specific angle in proper order according to the contained angle sequencing in the first sequence to make a plurality of the swinging boom removes in proper order to the transmitter with between the imager.

According to an embodiment of the application, the bearing part is provided with a concave bearing area, so that the lithium battery can be limited.

According to an embodiment of the application, the detection device comprises a second driving assembly, wherein the second driving assembly is used for driving the bearing piece to rotate and controlling the single rotation angle of the bearing piece, so that angular bisectors of all corners of the lithium battery are sequentially stopped at the central point of the ray detection area.

According to an embodiment of the application, the corner points of the lithium battery coincide with the ray detection areas.

According to an embodiment of the present application, the bearing member is square, and the second driving assembly controls the bearing member to rotate at a single rotation angle alternately

And

the method comprises the steps of detecting the radius of a ray detection area, detecting the rotation angle of a lithium battery, and obtaining the radius of the ray detection area.

According to an embodiment of the present application, the first driving assembly includes a stepping motor or a servo motor, and the second driving assembly includes a stepping motor or a servo motor; and a motor shaft of the stepping motor or the servo motor is fixedly connected to the geometric center of the bearing part.

According to an embodiment of the application, the device comprises two rotating arms, and the two rotating arms are arranged in parallel.

The application also provides a lithium battery production system, which comprises a lithium battery production line and the detection device;

the lithium battery production line is in butt joint with at least one rotating shaft of the detection device, so that the bearing piece on the rotating shaft receives the lithium battery produced by the lithium battery production line.

This application scheme is through setting up a plurality of swinging boom and rotation axis. The rotation axis can drive the swinging boom is rotatory to make every the carrier on the swinging boom removes in proper order to the transmitter with between the imager. At the moment, further setting the autorotation of the bearing piece, and sequentially arranging a plurality of side parts and/or a plurality of corner parts of the lithium battery on the bearing piece in a ray detection area, so that the multi-position detection of the position of the lithium battery pole piece is realized.

In this application, the rotation through the swinging boom cooperatees with the rotation that holds the carrier, consequently when the position of lithium cell is located between transmitter and the imager, holds the carrier and only need do the rotation motion, and turning radius is less to can improve slew velocity, thereby improve detection efficiency.

And, when detecting the lithium cell on certain rotor arm, the lithium cell that does not detect can be received to the carrier on other rotor arms, or supplies operating personnel to take out the lithium cell after detecting the completion, therefore the structural setting of this embodiment makes going on simultaneously of going up of lithium cell to detection efficiency has further been improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a schematic structural diagram of a detection apparatus having two rotating arms according to an embodiment of the present application.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural diagram of a detection apparatus having three rotary arms according to another embodiment of the present application.

Fig. 4 is a side view of fig. 3.

Fig. 5 is a schematic view of a transmitter projected onto a carrier according to one embodiment.

Fig. 6 is a schematic diagram illustrating the relationship between the size of the radiation detection area formed on the carrier by the emitter, the size of the carrier, and the single rotation angle of the carrier according to an embodiment.

The reference numerals are explained below: 100. a rotation mechanism; 11. a rotating shaft; 12. a rotating arm; 13. a carrier; 131. a load-bearing area; 14. mounting a column; 200. a ray detection module; 21. a transmitter; 211. a launch center; 22. and (4) detecting the area by rays.

Detailed Description

While this application is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the application and is not intended to limit the application to that as illustrated herein.

Thus, a feature indicated in this specification is intended to describe one of the features of an embodiment of the application and does not imply that every embodiment of the application must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as up, down, left, right, front, and rear) are used to explain the structure and movement of the various elements of the present application not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

The preferred embodiments of the present application will be further described in detail below with reference to the accompanying drawings of the present specification.

The application provides a detection device for lithium cell for detect the position of pole piece in the lithium cell, specifically can be the relative anodal pole piece's of negative pole piece overhanging volume in detecting the lithium cell.

Please refer to fig. 1 and fig. 2. Fig. 1 is a schematic structural diagram of a detection apparatus having two rotating arms 12 according to an embodiment of the present application. Fig. 2 is a side view of fig. 1. In one embodiment, the detection device for the lithium battery comprises a rotating mechanism 100 and a ray detection module 200. The rotating mechanism 100 includes a plurality of rotating arms 12 and a rotating shaft 11 connected to one end of the rotating arms 12. The rotary arm 12 can revolve around the rotary shaft 11; the rotating arm 12 is provided with a bearing piece 13 for bearing a lithium battery, and the bearing piece 13 is rotatably connected with the rotating arm 12 so that the bearing piece 13 can rotate relative to the rotating arm 12; the radiation detection module 200 includes an emitter 21 for emitting radiation and an imager (not shown) for receiving the radiation and forming an image, and the emitter 21 and the imager are disposed on both sides of the rotation mechanism 100 along the axial direction of the rotation shaft 11. The bearing 13 on each rotating arm 12 is sequentially moved between the emitter 21 and the imager by the revolution of the rotating arm 12, and the sides and/or corners of the lithium battery on the bearing 13 are sequentially placed in the radiation detection region 22 by the rotation of the bearing 13.

Here, when the emitter works, a ray bundle is emitted, and in the plane where the lithium battery is located, the coverage area of the ray bundle on the plane forms a ray detection area 22, and the ray detection area 22 is approximately circular.

The scheme of the application is that a plurality of rotating arms 12 and rotating shafts 11 are arranged. The rotating shaft 11 can drive the rotating arms 12 to rotate, so that the bearing 13 on each rotating arm 12 moves between the emitter 21 and the imager in sequence. At this time, further by setting the rotation of the bearing member 13, the plurality of side portions and/or the plurality of corner portions of the lithium battery on the bearing member 13 are sequentially placed in the radiation detection region 22, thereby realizing the multi-position detection of the position of the lithium battery pole piece.

In this application, the rotation through the swinging boom 12 matches with the rotation that holds carrier 13, consequently when the position of lithium cell is located between transmitter 21 and the imager, holds carrier 13 and only need do the rotation motion, and turning radius is less to can improve slew velocity, thereby improve detection efficiency.

And, when detecting the lithium cell on certain rotor arm, the lithium cell that does not detect can be received to the carrier 13 on other rotor arms, or supplies operating personnel to take out the lithium cell after having detected the completion, therefore the structural setting of this embodiment makes going on simultaneously of going up of lithium cell to detection efficiency has further been improved.

Here, the number of the rotating arms 12 is not particularly limited, and may be 2 to 10. For example 2, 3 or 4. In a specific embodiment, all the rotating arms 12 are equal in length and are uniformly arranged along the circumferential direction of the rotating shaft 11. In one embodiment, the detection device comprises two rotating arms, and the two rotating arms are arranged in parallel. The included angle of the two rotating arms is 180 degrees. The structural stability of rotary mechanism has been improved in the structural setting of two swinging boom, is fit for more with the butt joint of lithium cell production line to get and put the lithium cell that treats the detection, and take off the lithium cell that has detected.

In another embodiment, there are three pivot arms 12, and the three pivot arms 12 are at an angle of 120 ° to each other. Fig. 3 is a schematic structural diagram of a detection apparatus having three rotary arms 12 according to another embodiment of the present application. Fig. 4 is a side view of fig. 3.

The rotary mechanism 100 may be rotated manually by an operator or may be driven by a power source. In one embodiment, the detection device includes a first driving component, and the first driving component drives the rotating shaft 11 to rotate so as to control the rotating position of the rotating arm 12. The first drive assembly may comprise a motor or a cylinder.

In a specific example, the first driving assembly includes a stepping motor or a servo motor, and a motor shaft of the stepping motor or the servo motor is fixedly connected to the rotating shaft 11 to drive the rotating shaft 11 to rotate. The first driving assembly may further include a controller for controlling parameters such as start/stop time, rotation angle, rotation speed, etc. of the rotation of the stepping motor, and further controlling the target position of the rotation arm 12.

One bearing 13 is correspondingly arranged on each rotating arm 12. The carrier 13 is used to fix the lithium battery, and to limit the lithium battery. Of course, a plurality of carriers 13 may be disposed on each rotating arm 12, and correspondingly, a plurality of radiation detection modules 200 may be disposed to simultaneously perform synchronous detection on a plurality of lithium batteries on one rotating arm 12. In one embodiment, the supporting member 13 has a concave supporting area for limiting the position of the lithium battery. The carrying area is adapted to the shape of the lithium battery.

The carrier 13 can be rotated relative to the rotating arm 12 by an operator manually, and in an embodiment, the detection device includes a second driving assembly, which is used for driving the carrier 13 to rotate relative to the rotating arm 12 and controlling a single rotation angle of the carrier 13.

In a specific example, the second driving assembly includes a stepping motor or a servo motor, a mounting column 14 is disposed at the geometric center of the bearing member 13, and a motor shaft of the stepping motor or the servo motor is fixedly connected to the mounting column 14, so as to drive the bearing member 13 to rotate relative to the rotating arm 12. The second driving assembly may also include a controller for controlling parameters such as the rotation start/stop time, the rotation angle, the rotation speed, and the like of the stepping motor, so as to control the target rotation position of the carrier 13. Here, the controller of the second driving assembly and the controller of the second driving assembly may be the same controller.

The radiation emitted by emitter 21 may be X-rays, alpha rays, beta rays, gamma rays, neutron rays, and the like. In one embodiment, the imager may be of a variety of types, and in one example, information is recorded on the imager after the X-rays are transmitted through the lithium battery, and the imager generates a digitized image. Referring to the orientation in the figure, the emitter is located above the rotation mechanism 100 and the imager is located below the rotation mechanism 100.

In an embodiment, along the rotation direction of the rotation mechanism 100, the sequence of the included angles between every two adjacent rotating arms 12 is a first sequence, and the first driving assembly controls the rotating shaft 11 to sequentially rotate by a specific angle according to the sequence of the included angles in the first sequence, so that the plurality of rotating arms 12 sequentially move between the emitter 21 and the imager. During the detection, the rotating shaft 11 is controlled to rotate once, so that one lithium battery correspondingly rotates to a position right below the transmitter 21 (the geometric center of the lithium battery is not required to be coincident with the transmitting center 211 of the transmitter 21).

When the included angles between the rotating arms 12 are the same, the included angles in the first sequence are the same, so that the angle of the first driving assembly controlling the rotating shaft 11 to rotate once is also the same. For example, when there are two rotation shafts 11, the angle of a single rotation is 180 °; when the number of the rotary shafts 11 is three, the angle of a single rotation is 120 °.

Of course, the angles in the first series may also be different. For example, the first sequence is 120 °, 60 °, 180 °, respectively; the first driving assembly controls the rotation shaft 11 to rotate by 120 °, 60 °, 180 ° in sequence.

It should be understood that the rotation of the rotating shaft 11 is discontinuous in time, and each time the rotating shaft is rotated to a position, the lithium battery on a certain rotating arm 12 is located right below the transmitter 21, at this time, the rotating shaft 11 stops rotating for a preset time period, so as to wait for the lithium battery to finish the detection, and then continue to rotate next time according to the first sequence.

As before, when the lengths of the plurality of rotating arms 12 are the same and the included angles between the rotating arms 12 are the same, the relative positions of the carrier 13 and the emitter 21 can be the same when the carrier 13 on each rotating arm 12 corresponds to the position of the emitter 21. So set up, can be in testing process, unified regulation transmitter 21 and the position of receiver to can guarantee that the detection position to every lithium cell is all suitable, improve the uniformity of the image position that detects.

When the rotating arm 12 is driven by the first driving assembly to rotate, so that the lithium battery is just below the emitter 21, the bearing piece 13 starts to rotate under the drive of the second driving assembly, and the position is adjusted, so that the multiple side parts and/or the multiple corner parts of the lithium battery are sequentially right opposite to the emitter 21, and therefore detection is performed on the four corner parts of the lithium battery. The pole piece position detection can be performed on the corner of the lithium battery, so that the pole piece position detection is performed on two side portions forming the corner at the same time, the efficiency is further improved, and the comprehensiveness of the pole piece position detection is improved.

Here, in order to improve the uniformity of imaging positions of each corner of the lithium battery, in an embodiment, a second driving assembly may be provided for driving the carrier 13 to rotate relative to the rotating arm 12, and controlling the single rotation angle of the carrier 13 so that the bisectors of the corners of the lithium battery are sequentially stopped at the central point of the radiation detection area 22. Here, the lithium battery is generally square, having four corners. The radiation detection region 22 center point may be the geometric center of the radiation detection region 22. In this way, the imaging image of the corner on the imager can be approximately symmetrical, and the convenience and the accuracy of the later image analysis are improved.

Referring to fig. 5, fig. 5 is a schematic view illustrating a projection of the emitter 21 on the carrier 13 according to an embodiment. In order to reduce the transmission power of the transmitter 21, the amount of radiation is reduced. In one embodiment, the corner points of the lithium battery are arranged to coincide with the boundaries of the radiation detection area 22.

The greater the distance from the emitter 21 to the support 13, the larger the radiation detection area 22, which however tends to cause an unclear image on the imager due to the radiation divergence; the smaller the distance of the emitter 21 from the carrier 13, the smaller the radiation detection region 22, however, the better the imaging resolution on the imager because of the concentrated radiation. In the embodiment, the edge of the ray detection area 22 is just overlapped with the corner of the lithium battery, so that on the premise of reducing the power of the transmitter 21, the overlapping area of the ray detection area 22 and the corner of the lithium battery is increased by feeding, and therefore, the imaging area of the corner is increased under the condition of meeting the requirement of the imaging definition of the corner, and the detection accuracy is improved. Specifically, the distance from the emitter 21 to the carrier 13 may be d ═ r/tan θ; where d is a preset distance, r is a radius of the radiation detection area 22, the radiation beam of the emitter 21 is in a cone shape, and θ is a half of the emission angle of the emitter 21.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a relationship between a size of a radiation detection area 22 formed on the carrier 13 by the emitter, a size of the carrier 13, and a single rotation angle of the carrier 13 according to an embodiment. Taking the carrier 13 as a square, the square is a rectangle or a square. The second drive assembly controls the single rotation angle of the carrier 13 to alternate

And

where m is the long side dimension of the lithium battery, n is the short side dimension of the lithium battery, and r is the radius of the radiation detection area 22. When the lithium battery is square, m is equal to n. Specifically, the lithium battery has four corners, and during the initial position, first corner is located transmitter 21 under, and to first corner detection completion back, the rotatory alpha angle of lithium battery, to second corner detection, after the detection completion, the rotatory beta angle of lithium battery detects, detects to third corner, and after the detection completion, the rotatory alpha angle of lithium battery detects to fourth corner, and after the detection completion, the rotatory beta angle of lithium battery gets back to the initial position.

The application also provides a lithium battery production system, which comprises a lithium battery production line and the detection device; the lithium battery production line is butted with at least one rotating shaft 11 of the detection device, so that the bearing piece 13 on the rotating shaft 11 receives the lithium battery produced by the lithium battery production line.

Schematically, a lithium battery production line comprises a feeding belt through which lithium batteries are transported to a carrier 13 of one of the rotary shafts 11. Then, with the rotation of the rotating mechanism 100 and the bearing part 13, after the lithium batteries are sequentially detected, an operator or a grabbing device takes the lithium batteries out of the bearing part 13 and conveys the lithium batteries to the next process, and meanwhile, the rotating arm 12 rotates back to the feeding belt to receive the lithium batteries which are not detected from the feeding belt. Therefore, this embodiment has realized the concurrent operation of lithium cell material loading, unloading, has improved the detection efficiency of lithium cell.

While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (9)

1. A detection device for a lithium battery, comprising:

the rotating mechanism comprises a plurality of rotating arms and rotating shafts connected to one ends of the rotating arms, the rotating shafts can drive the rotating arms to rotate, bearing pieces used for bearing lithium batteries are arranged at the other ends of the rotating arms, and the bearing pieces are rotatably connected with the rotating arms;

the ray detection module comprises a transmitter for emitting rays and an imager for receiving the rays and forming an image, and the transmitter and the imager are respectively arranged on two sides of the rotating mechanism along the axial direction of the rotating shaft;

the rotation of the rotating arms can enable the bearing piece on each rotating arm to sequentially move between the emitter and the imager; and the autorotation of the bearing piece can sequentially place a plurality of side parts and/or a plurality of corner parts of the lithium battery on the bearing piece in the ray detection area.

2. The detecting device according to claim 1, wherein the detecting device comprises a first driving component for driving the rotating shaft to rotate; along rotary mechanism's direction of rotation, every two adjacent the sequencing of the contained angle between the swinging boom is first sequence, first drive assembly control the rotation axis rotates specific angle in proper order according to the contained angle sequencing in the first sequence to make a plurality of the swinging boom removes in proper order to the transmitter with between the imager.

3. The detecting device for detecting the rotation of a motor rotor as claimed in claim 2, wherein the bearing member is provided with a concave bearing area which can limit the rotation of the motor rotor.

4. The detection device according to claim 3, wherein the detection device comprises a second driving assembly, and the second driving assembly is used for driving the bearing member to rotate and controlling the single rotation angle of the bearing member, so that the angular bisectors of the corners of the lithium battery are sequentially stopped at the central point of the ray detection area.

5. The inspection device of claim 4, wherein the corner points of the lithium battery coincide with the boundaries of the radiation detection zone.

6. The detection apparatus according to claim 4, wherein the carrier has a square shape, and the second driving assembly controls the carrier to alternate between a single rotation angle of the carrier

And

the method comprises the steps of detecting the radius of a ray detection area, detecting the rotation angle of a lithium battery, and obtaining the radius of the ray detection area.

7. The detection apparatus according to claim 4, wherein the first driving assembly comprises a stepping motor or a servo motor, and the second driving assembly comprises a stepping motor or a servo motor; and a motor shaft of the stepping motor or the servo motor is fixedly connected to the geometric center of the bearing part.

8. The detection apparatus according to claim 1, comprising two of the rotary arms, the two rotary arms being arranged parallel to each other.

9. A lithium battery production system, characterized by comprising a lithium battery production line, and the detection device according to any one of claims 1 to 8;

the lithium battery production line is in butt joint with at least one rotating shaft of the detection device, so that the bearing piece on the rotating shaft receives the lithium battery produced by the lithium battery production line.

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