CN112110188A

CN112110188A - Battery cell sequence conversion device and battery module assembly method

Info

Publication number: CN112110188A
Application number: CN202011064442.4A
Authority: CN
Inventors: 吴轩; 冉昌林; 王雄力; 刘超
Original assignee: Jiangsu Yifei Laser Equipment Co ltd
Current assignee: Jiangsu Yifei Laser Equipment Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2020-12-22

Abstract

The invention relates to the technical field of battery manufacturing, and discloses a battery cell sequence conversion device and a battery module assembly method, wherein the battery cell sequence conversion device comprises: first clamping jaw, second clamping jaw, swing mechanism and mounting bracket, the mounting bracket is used for linking to each other fixedly with displacement mechanism, displacement mechanism is used for providing spatial displacement, swing mechanism is fixed in the mounting bracket, first clamping jaw connect in swing mechanism, the second clamping jaw install in the mounting bracket. According to the battery cell sequence transferring device and the battery module assembling method provided by the embodiment of the invention, the swinging mechanism is connected with the first clamping jaw, so that swinging and overturning can be realized after the first clamping jaw clamps the workpiece, different postures of the workpiece can be obtained without moving the displacement mechanism, the requirements of different sequence transferring postures can be met, the functionality and flexibility of sequence transferring clamping are improved, and the applicability can be improved.

Description

Battery cell sequence conversion device and battery module assembly method

Technical Field

The invention relates to the technical field of battery manufacturing, in particular to a battery cell sequence conversion device and a battery module assembly method.

Background

In today where energy competition is becoming more intense, it has become a common consensus to find products that replace petroleum energy. The rapid development of the battery industry is a trend, which has a wide application in industrial production, life and other aspects, and city electric buses are quietly started. The battery cell is an important component unit of the battery, and the battery is formed by assembling the battery cell module by the battery cell firstly and then packaging the battery cell module by a soft bag.

With the continuous development of modern industrial technology, more and more factories adopt automatic machines to replace manual operation, thereby greatly reducing the labor intensity and improving the processing efficiency. In the production process of the battery, the workpiece is required to be transferred between the previous process and the next process in most cases, so that the sequence is changed. The problem of poor functionality exists in the simple transfer that the preface of commentaries on classics in the battery production process realized the work piece through truss structure or arm etc. mostly at present.

Disclosure of Invention

The embodiment of the invention provides a battery cell sequence conversion device and a module assembly method, which are used for solving or partially solving the problem of poor functionality caused by the fact that in the prior art, the sequence conversion is mostly realized by a truss structure or a mechanical arm and the like to simply transfer workpieces.

An embodiment of the present invention provides a battery cell sequence conversion apparatus, including: first clamping jaw, second clamping jaw, swing mechanism and mounting bracket, the mounting bracket is used for linking to each other fixedly with displacement mechanism, displacement mechanism is used for providing spatial displacement, swing mechanism is fixed in the mounting bracket, first clamping jaw connect in swing mechanism, the second clamping jaw install in the mounting bracket.

On the basis of the scheme, the swing mechanism is connected with a connecting piece, and the first clamping jaw is connected to the connecting piece.

On the basis of the scheme, the mounting frame is connected with two limiting mechanisms at intervals on the swinging path of the first clamping jaw; when the first clamping jaw is positioned at one of the limiting mechanisms, the telescopic directions of the first clamping jaw and the second clamping jaw are positioned on the same straight line; when the first clamping jaw is positioned at the other limiting mechanism, the first clamping jaw and the second clamping jaw are in a side-by-side state, and the extension directions of the first clamping jaw and the second clamping jaw are parallel.

On the basis of the scheme, the limiting mechanism comprises a limiting support and a limiting block, the limiting support is fixed to the mounting frame, the limiting block is fixed to the limiting support, and the limiting block is used for limiting the swinging of the clamping jaw.

On the basis of the scheme, the limiting mechanism further comprises a buffering limiting part.

On the basis of the scheme, the first clamping jaw and the second clamping jaw respectively comprise two opposite jaw bodies, and the bottoms of the first clamping jaw and the second clamping jaw are respectively connected with a stroke pin between the two jaw bodies.

On the basis of the scheme, a plurality of stroke pins are symmetrically arranged on two sides of the bottom of the first clamping jaw; and a plurality of stroke pins are symmetrically arranged on two sides of the bottom of the second clamping jaw.

On the basis of the scheme, the travel pin is of an elastic structure.

On the basis of the scheme, the mounting frame is further connected with a detection support, and the detection support is connected with a detection unit.

The embodiment of the invention also provides a battery module assembly method based on the battery core sequence conversion device, which comprises the following steps: the method comprises the following steps that initially, when a first clamping jaw and a second clamping jaw are located on the same straight line in the stretching direction, a battery cell is clamped respectively, and stroke pins on the first clamping jaw and the second clamping jaw are compressed to preset positions respectively; swinging the first clamping jaw to enable the two battery cores clamped by the first clamping jaw and the second clamping jaw to be placed side by side and to be opposite in posture; correspondingly inserting the two electric cores clamped by the first clamping jaw and the second clamping jaw into the mounting positions of the module base; loosening the first clamping jaw and the second clamping jaw, and installing the two battery cores in place under the pushing of the elastic force of the stroke pin; the assembly result is verified by the detection unit.

According to the battery cell sequence transferring device and the battery module assembling method provided by the embodiment of the invention, the swinging mechanism is connected with the first clamping jaw, so that swinging and overturning can be realized after the first clamping jaw clamps the workpiece, different postures of the workpiece can be obtained without moving the displacement mechanism, the requirements of different sequence transferring postures can be met, the functionality and flexibility of sequence transferring clamping are improved, and the applicability can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic front view of a first position of a cell sequencing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic front view of a second position of a cell sequencing device according to an embodiment of the present invention;

fig. 3 is a schematic back view of a first position of a cell sequencing apparatus according to an embodiment of the present invention;

fig. 4 is a schematic back view of a second position of the cell sequencing device according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a module assembly according to an embodiment of the present invention.

Reference numerals:

1. a first jaw; 2. a swing mechanism; 3. a first connecting plate; 4. a second connecting plate; 5. a limiting mechanism; 51. a limiting bracket; 52. a limiting block; 53. buffering the limiting part; 6. a travel pin; 7. a connecting member; 8. detecting the bracket; 9. a detection unit; 10. positioning blocks; 11. a second jaw; 12. cushion blocks; 13. a housing; 14. a module base; 15. a first posture cell; 16. and a second posture cell.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a battery cell sequence conversion apparatus, where the battery cell sequence conversion apparatus includes: first clamping jaw 1, second clamping jaw 11, swing mechanism 2 and mounting bracket, the mounting bracket is used for linking to each other fixedly with displacement mechanism, and displacement mechanism is used for providing spatial displacement, and swing mechanism 2 is fixed in the mounting bracket, and first clamping jaw 1 is connected in swing mechanism 2, and second clamping jaw 11 is installed in the mounting bracket.

The displacement mechanism is used for providing space displacement, and this electricity core changes preface device is used for realizing that the clamp of work piece gets, and then utilizes the displacement mechanism to drive this electricity core and change preface device and realize the transfer of work piece between different processes at the space removal. The mounting bracket is used for realizing the fixation of each part of the battery cell sequence conversion device and the connection with the displacement mechanism. The jaws are adapted to directly contact the workpiece to apply a clamping force to the workpiece. The swing mechanism 2 is arranged to drive the clamping jaw to swing, so that the workpiece clamped by the clamping jaw can swing under the driving of the swing mechanism 2, different postures of the workpiece can be obtained, and different requirements on sequence turning postures are met.

The two

clamping jaws

1 and 11 are arranged, so that two workpieces can be clamped simultaneously, and the efficiency is improved; and different relative postures between two workpieces can be realized through the swing of the first clamping jaw 1 between the two clamping jaws, so that the functionality and the applicability are improved.

The battery cell sequence transferring device provided by the embodiment is provided with the swinging mechanism 2 connected with the first clamping jaw 1, and can swing and turn over after the first clamping jaw 1 clamps a workpiece, so that different postures of the workpiece can be obtained under the condition that the displacement mechanism is not moved, different sequence transferring posture requirements can be met, the functionality and flexibility of sequence transferring clamping are improved, and the applicability can be improved.

Specifically, for example, the workpiece can be initially placed on a station, and after the first clamping jaw 1 clamps the workpiece, the swing mechanism 2 can be rotated by 90 degrees to turn the workpiece from horizontal to vertical. The swing mechanism 2 can also rotate to realize 180-degree turnover of the workpiece, and when the workpiece is a square battery cell, the position of the electrode of the workpiece can be exchanged. Referring to fig. 1 and fig. 2, the square battery cell clamped by the first clamping jaw 1 is rotated by the swing mechanism 2 to exchange the positions of the positive electrode and the negative electrode; the relative relationship with the square battery core clamped by the second clamping jaw 11 is changed.

Further, the displacement mechanism may be a one-dimensional or two-dimensional or three-dimensional linear displacement mechanism; so as to drive the cell sequence conversion device to move in a one-dimensional straight line, a two-dimensional straight line or a three-dimensional straight line. The displacement mechanism can also be a four-axis robot, a six-axis robot, a multi-degree-of-freedom mechanical arm and the like; so as to drive the order-transferring clamping device to perform multi-degree-of-freedom spatial displacement. The specific form of the displacement mechanism can be flexibly selected according to actual needs, and is not limited specifically.

Further, the swing mechanism 2 is a mechanism capable of providing a rotational movement, and may be, for example, a swing table, a swing cylinder, a gear structure, and the like, and is not limited specifically. Preferably, the swing mechanism 2 may be a swing cylinder.

In addition to the above embodiment, the swing mechanism 2 is further connected to a connecting member 7, and the first holding jaw 1 is connected to the connecting member 7. The swing mechanism 2 can be fixedly connected with the connecting piece 7, and the clamping jaw is fixed on the connecting piece 7; the swing mechanism 2 drives the connecting piece 7 to rotate integrally. The clamping jaw is connected with the swinging mechanism 2 through a connecting piece 7 with a certain length, so that when the swinging mechanism 2 swings, the clamping jaw not only changes the angle, but also changes the position deviating from the initial position, namely rotates by taking the connecting piece 7 as the radius. The variability and the functionality of the sequencing clamping device can be increased.

Further, the mounting rack comprises a bracket, a first connecting plate 3 and a second connecting plate 4 which are arranged on two opposite sides of the bracket; the first connecting plate 3 is used for being fixedly connected with the displacement mechanism; the swing mechanism 2 can be fixed on the inner side of the second connecting plate 4, and a swing piece of the swing mechanism 2 extends out of the inner side of the second connecting plate 4 and is connected with the clamping jaw.

Further, the second jaw 11 may be connected to the mounting frame by a spacer 12; so that the clamping surfaces of the second jaw 11 and the first jaw 1 are in the same plane.

On the basis of the above embodiment, two limiting mechanisms 5 are further connected to the mounting frame at intervals on the swing path of the first clamping jaw 1. The limiting mechanism 5 is used for limiting the swing position of the clamping jaw, so that the clamping jaw rotates to the position of the preset limiting mechanism 5, accurate required postures can be obtained, and control of different postures of the workpiece is facilitated. Referring to fig. 3, a positioning block 10 can be further connected to the connecting member 7; the positioning block 10 is used for being matched with the limiting block 52 and the buffer limiting block 53 to realize the positioning of the clamping jaw when the swing mechanism 2 swings.

When the first clamping jaw 1 is positioned at one of the limiting mechanisms 5, the telescopic directions of the first clamping jaw 1 and the second clamping jaw 11 are positioned on the same straight line; as shown in fig. 1. When the first clamping jaw 1 is positioned at the other limiting mechanism 5, the first clamping jaw 1 and the second clamping jaw 11 are in a parallel state, and the extension directions of the first clamping jaw and the second clamping jaw are parallel; as shown in fig. 2.

On the basis of the above embodiment, further, the limiting mechanism 5 includes a limiting bracket 51 and a limiting block 52, the limiting bracket 51 is fixed to the mounting frame, the limiting block 52 is fixed to the limiting bracket 51, and the limiting block 52 is used for blocking and limiting the swinging of the clamping jaws. Namely, the clamping jaw can swing between the two limiting mechanisms 5, when the clamping jaw rotates to the limiting block 52, the clamping jaw cannot continue to rotate under the blocking of the limiting block 52, and the limiting block 52 is a preset determined position of the clamping jaw. The swing angle of the clamping jaw required can be determined according to the posture of the workpiece required, and then the position of the limiting mechanism 5 can be determined.

In addition to the above embodiments, the limiting mechanism 5 further includes a buffering limiting member 53. The damping device can play a certain damping effect on the swinging of the clamping jaw before the clamping jaw swings to the limiting block 52, so that the clamping jaw is firstly damped by the buffering limiting block 53 to reduce the speed and then stops at the limiting block 52. The collision between the clamping jaw and the limiting block 52 during the swinging can be avoided, the positioning accuracy can be improved, and the damage to the workpiece clamped by the clamping jaw can be avoided. The buffering limiting member 53 may be an elastic member, a hydraulic buffer, etc., and is not limited in particular.

On the basis of the above embodiment, further, the first clamping jaw 1 and the second clamping jaw 11 respectively comprise two opposite jaw bodies, and the bottom parts of the first clamping jaw 1 and the second clamping jaw 11 are respectively connected with the stroke pins 6 between the two jaw bodies. The bottom of the clamping jaw is the side opposite to the opening side of the clamping jaw, and when the clamping jaw clamps a workpiece, the workpiece gradually moves to the bottom of the clamping jaw from the opening side of the clamping jaw. The travel pin 6 limits the depth of insertion of the workpiece between the two jaw bodies. The travel pin 6 is arranged to limit the depth of the workpiece inserted into the clamping jaw; the device is beneficial to improving the consistency of the depth of clamping the workpiece every time, and the intellectualization and the accuracy of the clamping device are improved.

Further, the clamping jaw can be a clamping jaw cylinder, namely a pneumatic jaw, a finger cylinder and the like, so that the purpose of clamping the workpiece can be achieved, and the clamping jaw is not limited specifically. The two claw bodies of the clamping jaw can be plane so as to be convenient for clamping workpieces with plane surfaces, such as square battery cores or plate-shaped workpieces. The claw body of the clamping jaw can also not be a plane, for example, the claw body can be arc-shaped, so that the clamping jaw can be used for clamping workpieces with arc-shaped surfaces, such as cylindrical battery cores and the like. The specific shape of the jaw body of the jaw and the specific workpiece gripped by the jaw are not limited.

Further, referring to fig. 1, the jaw body of the jaw may be L-shaped. One side of the L-shaped jaw body is used for contacting with a workpiece to clamp the workpiece, and the other side of the L-shaped jaw body is used for connecting with a driving part of the clamping jaw, such as an air cylinder. The driving part of the clamping jaw is fixedly arranged and used for providing power for moving the clamping jaw body. The travel pin 6 can be fixed on the claw body; along with the extension and contraction of the two claw bodies, the two claw bodies correspondingly move. The travel pin 6 can also be fixed on the driving part of the clamping jaw; the claw body does not move with the extension and contraction of the claw body, and is not limited specifically.

On the basis of the above embodiment, further, the stroke pin 6 can limit and fix the depth of the workpiece inserted into the clamping jaw by abutting against the surface of the workpiece. A plurality of stroke pins 6 are symmetrically arranged on two sides of the bottom of the first clamping jaw 1; the bottom two sides of the second clamping jaw 11 are also symmetrically provided with a plurality of stroke pins 6. Symmetrical abutting force can be applied to the workpiece, and the uniformity of the workpiece inserted into the clamping jaw is guaranteed.

In addition to the above embodiments, the trip pin 6 is further of an elastic structure.

On the basis of the above embodiment, further, the mounting frame is further connected with a detection support 8, and the detection support 8 is connected with a detection unit 9. The detection unit 9 is used for detecting and verifying the workpieces which are subjected to sequence conversion by the sequence conversion clamping device. So as to ensure that the posture of the workpiece after the sequence conversion meets the sequence conversion requirement.

Specifically, the detection unit 9 may be an industrial camera, a distance measurement sensor, a code reader, and the like. The industrial camera can verify whether the posture of the workpiece meets the sequence conversion requirement through image detection; the distance measuring sensor can detect and verify whether the placement height of the workpiece meets the sequence conversion requirement through measuring the distance between the distance measuring sensor and the workpiece; the code reader can detect and verify whether the workpiece is the workpiece required by the sequence transferring by reading the identification code information on the workpiece. The detecting unit 9 may be other, and may be flexibly set according to actual needs, and is not particularly limited.

On the basis of the above-described embodiment, further, with reference to fig. 1 and 2, the detection unit 9 is position-adjustably connected to the detection bracket 8. That is, the detecting unit 9 does not have a unique mounting position on the detecting bracket 8, but has a plurality of mounting positions, so that the position of the detecting unit 9 can be flexibly adjusted according to actual needs, and the flexibility and applicability of the detecting unit 9 can be improved.

Further, a strip-shaped mounting hole or a plurality of mounting holes may be formed along the length direction or the width direction of the detection bracket 8, and the detection unit 9 is connected and fixed to the detection bracket 8 at the mounting holes. A plurality of detection supports 8 and detection units 9 can be arranged on the mounting frame side by side, so that a plurality of workpieces or a plurality of parts of the workpieces can be detected simultaneously, and the efficiency is improved.

On the basis of the foregoing embodiments, further, the present embodiment provides a battery production line, which includes the battery cell sequence conversion apparatus described in any of the foregoing embodiments. The sequence conversion device is used for realizing the sequence conversion of workpieces on a battery production line.

On the basis of the foregoing embodiments, further, this embodiment provides a battery module assembling method based on the foregoing battery cell sequence conversion apparatus in any embodiment, where the battery module assembling method includes: the method comprises the following steps that initially, when a first clamping jaw 1 and a second clamping jaw 11 are located on the same straight line in the stretching direction, a battery cell is clamped respectively, and stroke pins 6 on the first clamping jaw 1 and the second clamping jaw 11 are compressed to preset positions respectively; swinging the first clamping jaw 1 to enable the two battery cells clamped by the first clamping jaw 1 and the second clamping jaw 11 to be placed side by side and in opposite postures, as shown in fig. 4; correspondingly inserting two battery cores clamped by the first clamping jaw 1 and the second clamping jaw 11 into the installation position of the module base 14; loosening the first clamping jaw 1 and the second clamping jaw 11, and installing the two battery cores in place under the pushing of the elastic force of the stroke pin 6; the assembly result is verified by the detection unit 9.

The battery module assembling method can be used for assembling modules with electric cores arranged in a positive and negative crossing mode, and can be used for assembling energy storage modules. Referring to fig. 5, one of the module bases 14 has a plurality of mounting slots side by side; and forming a battery cell installation position, wherein the battery cell needs to be inserted into the installation groove for assembly. A plurality of mounting grooves on one module base 14 are divided into mounting grooves for a plurality of first posture cells 15 and mounting grooves for a plurality of second posture cells 16. The mounting grooves of the first posture cells 15 are adjacent to each other in sequence to form a first group of mounting grooves, and the mounting grooves of the second posture cells 16 are adjacent to each other in sequence to form a second group of mounting grooves. The first set of mounting slots and the second set of mounting slots on the module base 14 are sequentially arranged alternately. That is, the mounting grooves of the first posture cells 15 and the mounting grooves of the second posture cells 16 are sequentially formed in the mounting grooves of the module base 14, and thus the mounting grooves are sequentially formed. The number of mounting grooves of the first posture cell 15 and the number of mounting grooves of the second posture cell 16 may be the same.

The module assembling method further comprises the following steps: the battery cell gripped by the first clamping jaw 1 and the battery cell gripped by the second clamping jaw 11 may be inserted into the corresponding mounting positions of the first posture battery cell 15 and the second posture battery cell 16 at a time. Can set up and rotate to when parallel with second clamping jaw 11 side by side and flexible direction at first clamping jaw 1, have the interval between first clamping jaw 1 and the second clamping jaw 11 to when making the mould equipment, have the interval between two electric cores that the gesture is opposite at every turn. Therefore, when the battery cell is placed at each time, the two battery cells can be inserted into the corresponding positions of the installation positions with different postures.

Specifically, referring to fig. 5, in the module of this embodiment, the first posture battery cell 15 and the second posture battery cell 16 may be placed in a set of three cells alternately, that is, three second posture battery cells 16 need to be placed behind three first posture battery cells 15 shown in the top row of battery cells in fig. 5. The two battery cells can be clamped by the first clamping jaw 1 and the second clamping jaw 11, and then the first clamping jaw 1 is turned over to form two battery cells with intervals and opposite postures. The two cells are assembled in the manner of being placed in the bottom row in fig. 5. And then clamping the battery cell for the second time, and assembling the battery cell in a middle row placement mode in the figure 5 after overturning. The cores are then clamped again to form the uppermost row of the assembly of figure 5. According to the method, the module assembly is finally completed. A plurality of modules are put into the case 13, thereby completing the battery assembly. The module base 14 can be fixed and arranged in the housing 13 before the cell is assembled.

The clamping jaw drives the battery core to be inserted into the module base 14, and after the claw body is loosened, the compressed stroke pin 6 can apply thrust to the battery core, so that the battery core can be ensured to be inserted in place. After each assembly of the battery cell, a detection unit 9 such as a camera can be arranged to detect whether a corresponding battery cell exists at the corresponding installation position, namely whether the assembly position of the battery cell is correct or not and whether the conditions of smooth assembly, toppling and the like exist or not are detected; and detecting whether the assembly posture of the battery cell is qualified or not by using a camera. Further, because the die assembly is high in the requirement for the height of the paired battery cells (if the heights of the poles on the surface of the battery cells are not uniform, the subsequent processes are affected, and the performance of the battery is affected), a distance measuring sensor can be arranged to detect and verify whether the heights on the surfaces of the battery cells are uniform and reach the standard.

Furthermore, the battery cell sequence conversion device is not only suitable for sequence conversion clamping and module assembly of a battery cell, but also suitable for sequence conversion clamping and assembly of other workpieces needing posture adjustment, and does not limit the specific suitable workpieces.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a battery core changes preface device which characterized in that includes: first clamping jaw, second clamping jaw, swing mechanism and mounting bracket, the mounting bracket is used for linking to each other fixedly with displacement mechanism, displacement mechanism is used for providing spatial displacement, swing mechanism is fixed in the mounting bracket, first clamping jaw connect in swing mechanism, the second clamping jaw install in the mounting bracket.

2. The battery cell sequencing device of claim 1, wherein the swing mechanism is connected to a connector, and the first clamping jaw is connected to the connector.

3. The battery cell sequencing device of claim 2, wherein the mounting frame is connected with two limiting mechanisms at intervals on a swinging path of the first clamping jaw;

when the first clamping jaw is positioned at one of the limiting mechanisms, the telescopic directions of the first clamping jaw and the second clamping jaw are positioned on the same straight line;

when the first clamping jaw is positioned at the other limiting mechanism, the first clamping jaw and the second clamping jaw are in a side-by-side state, and the extension directions of the first clamping jaw and the second clamping jaw are parallel.

4. The battery core sequence switching device according to claim 3, wherein the limiting mechanism comprises a limiting support and a limiting block, the limiting support is fixed to the mounting frame, the limiting block is fixed to the limiting support, and the limiting block is used for stopping and limiting the swinging of the clamping jaw.

5. The cell sequencing device of claim 3, wherein the limiting mechanism further comprises a buffering limiting member.

6. The battery cell sequencing device of any one of claims 1 to 5, wherein the first clamping jaw and the second clamping jaw each comprise two opposing jaw bodies, and a travel pin is connected to the bottom of the first clamping jaw and the bottom of the second clamping jaw between the two jaw bodies.

7. The battery cell sequencing device of claim 6, wherein a plurality of the travel pins are symmetrically arranged on two sides of the bottom of the first clamping jaw; and a plurality of stroke pins are symmetrically arranged on two sides of the bottom of the second clamping jaw.

8. The cell sequencing apparatus of claim 6, wherein the travel pin is of a resilient structure.

9. The battery cell sequence conversion device according to any one of claims 1 to 5, wherein the mounting rack is further connected with a detection support, and the detection support is connected with a detection unit.

10. A battery module assembling method based on the cell sequencing device of any one of claims 1 to 9, comprising:

the method comprises the following steps that initially, when a first clamping jaw and a second clamping jaw are located on the same straight line in the stretching direction, a battery cell is clamped respectively, and stroke pins on the first clamping jaw and the second clamping jaw are compressed to preset positions respectively;

swinging the first clamping jaw to enable the two battery cores clamped by the first clamping jaw and the second clamping jaw to be placed side by side and to be opposite in posture;

correspondingly inserting the two electric cores clamped by the first clamping jaw and the second clamping jaw into the mounting positions of the module base;

loosening the first clamping jaw and the second clamping jaw, and installing the two battery cores in place under the pushing of the elastic force of the stroke pin;

the assembly result is verified by the detection unit.