Battery piece pressing device

Abstract

The invention provides a battery piece pressing device, and relates to the technical field of photovoltaic cells, the battery piece pressing device comprises a carrier plate, a plurality of pressing assemblies arranged on the carrier plate, and a driving assembly matched with the pressing assemblies, the carrier plate is provided with at least one placing groove, the placing groove is used for placing a battery piece, and the plurality of pressing assemblies are arranged around the circumferential direction of the placing groove; the pressing assembly comprises at least one first connecting piece arranged on the carrier plate, a pressing needle connected with the first connecting piece and a second connecting piece arranged opposite to the pressing needle, one end of the pressing needle is rotationally connected with the carrier plate through the first connecting piece, and the other end of the pressing needle is located over the edge of the containing groove. The second connecting piece is matched with the pressing needle, so that the pressing needle presses and limits the battery piece; the driving assembly comprises a fixing frame and at least one driving piece, and the driving piece is used for relieving pressing and limiting of the pressing needle on the battery piece. The battery pieces are limited through the multiple pressing needles, the covering area of the battery pieces is obviously smaller, and the fragment rate of the battery pieces is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cells, and in particular to a cell sheet pressing device. Background Art

[0002] The cell coating process is a vital link in the solar photovoltaic power generation system. By coating a thin film on the surface of the cell, it can improve the photoelectric conversion efficiency of the cell, effectively protect the cell, and extend the service life of the cell.

[0003] At present, vertical coating equipment is usually used to coat battery cells, and the limiting and fixing of battery cells in the vertical coating equipment is generally achieved by using pins and cover plates to press the edges of the battery cells. One cover plate can limit and fix multiple battery cells. However, in the process of coating the battery cells with the vertical coating equipment, due to large temperature changes, it is easy for the cover plate to expand due to heat and crush the battery cells. In addition, when the battery cells are limited and fixed by the cover plate, the cover plate will cover the edges of the battery cells, reducing the coating area of ​​the battery cells, seriously affecting the coating quality of the battery cells, and causing waste of production line capacity. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a battery cell clamping device, which aims to solve the technical problem that in the prior art, the battery cells are limited and fixed in the vertical coating equipment by means of pins and cover plates pressing the edges of the battery cells. It is easy for the cover plate to expand due to heat and crush the battery cells, and the cover plate will cover the edges of the battery cells, reducing the coating area of ​​the battery cells, seriously affecting the coating quality of the battery cells and causing waste of production line capacity.

[0005] The object of the present invention is to provide a battery cell pressing device, comprising: a carrier plate, a plurality of pressing assemblies arranged on the carrier plate, and a driving assembly adapted to the pressing assembly, wherein the carrier plate is provided with at least one placement groove, the placement groove is used to place battery cells, and the plurality of pressing assemblies are arranged around the circumference of the placement groove;

[0006] The pressing assembly includes at least one first connecting member provided on the carrier, a pressing pin connected to the first connecting member, and a second connecting member provided opposite to the pressing pin, wherein one end of the pressing pin is rotatably connected to the carrier through the first connecting member, and the other end of the pressing pin is located just above the edge of the placement groove, and the pressing pin is pressed and limited to the battery cell by the cooperation between the second connecting member and the pressing pin;

[0007] The driving assembly includes a fixing frame and at least one driving member arranged on the fixing frame, and the driving member is used to release the pressing limit of the pressing pin on the battery sheet.

[0008] Compared with the prior art, the beneficial effects of the battery cell clamping device of the present invention are: simple and compact structure, easy operation, and the clamping and limiting of the battery cell is achieved by arranging multiple clamping components around the placement groove of the carrier plate, and a driving component is arranged to quickly release the limiting fixation of the battery cell by the clamping component, so as to facilitate the taking and placing of the battery cell in the carrier plate placement groove. Specifically, the clamping component includes at least one first connecting member arranged on the carrier plate, a pressing pin connected to the first connecting member, and a second connecting member arranged opposite to the pressing pin. The clamping and limiting of the battery cell by the pressing pin is achieved through the cooperation of the second connecting member and the pressing pin. Compared with the existing method of limiting the battery cell by using a cover plate, the covering area of ​​the battery cell by the pressing pin during the battery cell coating process is significantly smaller, which will not affect the coating quality of the battery cell, and the pressing pin will not contact the battery cell when limiting the battery cell, which greatly reduces the fragmentation rate of the battery cell and can greatly improve the production capacity of the production line.

[0009] Further, the first connecting member is a first rotating rod, the first rotating rod is rotatably disposed on the carrier plate, the pressing needle is disposed along the radial direction of the first rotating rod, and one end of the pressing needle is fixedly connected to the rod body of the first rotating rod.

[0010] Furthermore, the pressing needle includes a needle rod part and a magnetic connecting part integrally connected to the needle rod part, one end of the needle rod part is fixedly connected to the rod body of the first rotating rod, and the other end of the needle rod part is located directly above the edge of the placement groove, and the magnetic connecting part and the second connecting part are arranged opposite to each other and attract each other.

[0011] Furthermore, the magnetic connection part is an adsorption magnet, and the second connection part is a magnetic metal sheet, and the adsorption magnet attracts the magnetic metal sheet to achieve the pressing and limiting of the battery cell by the pressing pin.

[0012] Furthermore, the magnetic connection part is a magnetic metal sheet, and the second connection part is an adsorption magnet, and the adsorption magnet attracts the magnetic metal sheet to achieve the pressing and limiting of the battery cell by the pressing pin.

[0013] Furthermore, the driving member is a driving magnet, and the driving magnet and the adsorption magnet repel each other. When the driving component is close to the side of the carrier plate away from the pressing needle, the adsorption magnet is repelled by the driving magnet and drives the needle rod part to rotate in the direction away from the placement slot with the first rotating rod as the center, so as to release the pressing limit of the pressing needle on the battery cell.

[0014] Furthermore, the driving member is a push rod, and the carrier plate is provided with a through hole for the push rod to pass through, and the through hole is arranged opposite to the pressing needle. The push rod passes through the through hole to abut against the pressing needle and push the pressing needle open, so that the pressing needle rotates in a direction away from the placement groove with the first rotating rod as the center, so as to release the pressing limit of the pressing needle on the battery cell.

[0015] Furthermore, the first connecting member is a second rotating rod, and the second rotating rod is rotatably arranged on the carrier board along the thickness direction of the carrier board. The pressing needle is arranged along the radial direction of the second rotating rod, and one end of the pressing needle is fixedly connected to one end of the second rotating rod, and the other end of the second rotating rod is fixedly provided with one end of the second connecting member. The driving member cooperates with the second connecting member to drive the pressing needle to rotate on the plane where the carrier board surface is located with the second rotating rod as the center, so that the end of the pressing needle is away from the edge of the placement groove to release the pressing limit of the pressing needle on the battery cell.

[0016] Further, the first connecting member is a third rotating rod, a connecting column is fixedly provided on the carrier plate, the connecting column is arranged along the thickness direction of the carrier plate, the third rotating rod is arranged along the radial direction of the connecting column, and one end of the third rotating rod is rotatably connected to one end of the connecting column, and the other end of the third rotating rod is connected to one end of the pressing needle to realize the rotational connection between the pressing needle and the carrier plate.

[0017] Furthermore, the second connecting member is a torsion spring, which is sleeved on the third rotating rod, and one end of the torsion spring is fixedly connected to the pressing pin, and the other end of the torsion spring is fixedly connected to the connecting column. When the torsion spring is in a free state, the end of the pressing pin away from the torsion spring is located directly above the edge of the placement groove, so as to be used to press and limit the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structural principle design of the battery cell pressing device in the first embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the layout structure of a single placement groove and its surroundings when the battery cell pressing device in the first embodiment of the present invention is in use;

[0020] Figure 3 It is a schematic diagram of the state of the pressing assembly when the driving member of the battery cell pressing device in the first embodiment of the present invention is close to the carrier;

[0021] Figure 4 is a cross-sectional structural diagram of the battery cell pressing device in the first embodiment of the present invention when the pressing pins are in an open state;

[0022] Figure 5It is a schematic diagram of another structural principle design of the battery cell pressing device in the first embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structural principle design of a battery cell pressing device in the second embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the layout structure of a single placement groove and its surroundings when the battery cell pressing device in the second embodiment of the present invention is in use;

[0025] Figure 8 It is a schematic diagram of the state of the pressing assembly when the driving member of the battery cell pressing device 8 in the second embodiment of the present invention is close to the carrier;

[0026] Fig. 9 is a cross-sectional structural diagram of a battery cell pressing device in a second embodiment of the present invention when the pressing pins are in an open state;

[0027] Fig.10 A schematic diagram of the structural principle design of a battery cell pressing device in the third embodiment of the present invention;

[0028] Fig.11 It is a schematic diagram of the layout structure of a single placement groove and its surroundings when the battery cell pressing device in the third embodiment of the present invention is in use;

[0029] Fig.12 It is a schematic diagram of the state of the pressing assembly when the driving member in the driving assembly in the battery cell pressing device in the third embodiment of the present invention is close to the carrier;

[0030] Fig.13 It is a cross-sectional structural diagram of a battery cell pressing device in the third embodiment of the present invention.

[0031] Among them, the above-mentioned drawings include the following figure marks: 10-carrier; 11-placement groove; 12-through hole; 20-clamping assembly; 21-mounting seat; 211-cover plate portion; 212-bottom plate portion; 22-pressing needle; 221-needle rod portion; 222-magnetic connecting portion; 23-first connecting member; 24-second connecting member; 25-connecting column; 31-driving member; 32-fixing frame; 40-battery cell; 50-fastener.

[0032] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] In order to solve the problem in the prior art that when using vertical coating equipment to coat battery cells, pins and cover plates are generally used to press the edges of the battery cells to achieve the limiting and fixing of the battery cells in the vertical coating equipment. One cover plate is used to limit and fix multiple battery cells. However, in the process of coating the battery cells by the vertical coating equipment, the temperature changes greatly, and it is easy for the cover plate to expand due to heat and crush the battery cells. In addition, when the battery cells are limited and fixed by the cover plate, the cover plate will cover the edges of the battery cells, reducing the coating area of ​​the battery cells, seriously affecting the coating quality of the battery cells, and causing technical problems such as waste of production capacity of the production line. The battery cell pressing device provided by the present invention has a simple and compact structure and is easy to operate. It realizes the pressing and limiting of the battery cell by arranging multiple pressing components around the placement groove of the carrier plate, and arranges a driving component to quickly release the limiting fixation of the battery cell by the pressing component, so as to facilitate the taking and placing of the battery cell in the placement groove of the carrier plate. Specifically, the pressing component includes at least one first connecting member arranged on the carrier plate, a pressing pin connected to the first connecting member, and a second connecting member arranged opposite to the pressing pin. The pressing and limiting of the battery cell by the pressing pin is realized through the cooperation of the second connecting member and the pressing pin. Compared with the existing method of limiting the battery cell by using the cover plate, the covering area of ​​the battery cell by the pressing pin during the battery cell coating process is significantly smaller, which will not affect the coating quality of the battery cell, and the pressing pin will not contact the battery cell when limiting the battery cell, which greatly reduces the fragmentation rate of the battery cell and can greatly improve the production capacity of the production line.

[0037] In order to facilitate understanding of the present invention, several embodiments of the present invention are provided below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0038] Embodiment 1

[0039] See also Figures 1 to 5 , shown is a battery cell pressing device in the first embodiment of the present invention. In this embodiment, the opening and closing of the pressing needle 22 is achieved by rotating the pressing needle 22 in a magnetic push and magnetic attraction manner.

[0040] Specifically, the cell pressing device of the present invention includes a carrier 10, a plurality of pressing assemblies 20 disposed on the carrier 10, and a driving assembly adapted to the pressing assemblies 20. The carrier 10 is provided with at least one placement groove 11, the placement groove 11 is used to place the cell 40, and the plurality of pressing assemblies 20 are arranged around the circumference of the placement groove 11. Further, the pressing assembly 20 includes at least one first connecting member 23 disposed on the carrier 10, a pressing needle 22 connected to the first connecting member 23, and a second connecting member 24 disposed opposite to the pressing needle 22, wherein one end of the pressing needle 22 is rotatably connected to the carrier 10 through the first connecting member 23, and the other end of the pressing needle 22 is located just above the edge of the placement groove 11, and the pressing needle 22 is pressed and limited to the cell 40 by the cooperation between the second connecting member 24 and the pressing needle 22. Furthermore, the driving assembly includes a fixing frame 32 and at least one driving member 31 disposed on the fixing frame 32 , and the driving member 31 is used to release the pressing limit of the pressing needle 22 on the battery cell 40 so as to facilitate the battery cell 40 to be taken and placed on the carrier 10 .

[0041] See also Figure 1 , which is a schematic diagram of the structural principle design of the battery cell pressing device in this embodiment, as shown in Figure 1 As shown in , a placement groove 11 is provided on the carrier 10, and a battery cell 40 is provided in the placement groove 11. A clamping assembly 20 is provided at a position on the carrier 10 near the edge of the placement groove 11, and the battery cell 40 in the placement groove 11 is clamped and limited by the clamping assembly 20. Specifically, in this embodiment, the first connecting member 23 is a first rotating rod, which is rotatably provided on the carrier 10, and the first rotating rod is provided near the edge of the placement groove 11. The pressing needle 22 is provided along the radial direction of the first rotating rod, and one end of the pressing needle 22 is fixedly connected to the rod body of the first rotating rod, so that the pressing needle 22 can rotate around the first rotating rod under the action of external force.

[0042] Furthermore, the pressing needle 22 includes a needle rod portion 221 and a magnetic connection portion 222 integrally connected to the needle rod portion 221, one end of the needle rod portion 221 is fixedly connected to the shaft of the first rotating rod, and the other end of the needle rod portion 221 is located just above the edge of the placement slot 11, and the magnetic connection portion 222 and the second connection member 24 are arranged opposite to each other and attract each other. As a specific example, Figure 1 As shown in , the pressing needle 22 includes a needle rod portion 221 arranged along the radial direction of the first rotating rod, and a magnetic connecting portion 222 integrally connected to the rod body of the needle rod portion 221. One end of the needle rod portion 221 is fixedly connected to the rod body of the first rotating rod, and the other end of the needle rod portion 221 is located just above the edge of the placement groove 11 for pressing and limiting the battery cell 40. The magnetic connecting portion 222 is arranged adjacent to the first rotating rod, and a second connecting member 24 is fixedly provided on the carrier 10 at a position opposite to the magnetic connecting portion 222. It should be understood that in some embodiments, such as Figures 2 to 4 As shown, the connection relationship between the needle rod part 221 and the magnetic connection part 222 in the pressing needle 22 can also be: one end of the magnetic connection part 222 is integrally connected with one end of the needle rod part 221, the end of the magnetic connection part 222 away from the needle rod part 221 is fixedly connected to the rod body of the first rotating rod, and the end of the needle rod part 221 away from the magnetic connection part 222 is located directly above the edge of the placement groove 11 for pressing and limiting the battery cell 40.

[0043] As a specific example, in this embodiment, if Figure 3 As shown, the magnetic connecting part 222 is an adsorption magnet, and the second connecting part 24 is a magnetic metal sheet. The adsorption magnet attracts the magnetic metal sheet to realize the pressing and limiting of the battery cell 40 by the pressing needle 22. Specifically, the magnetic metal sheet can be set as an iron sheet, and the magnetic field of the adsorption magnet acts on the iron sheet, so that the entire iron sheet also generates a magnetic field, and interacts with the magnetic field on the adsorption magnet, so that a mutual magnetic attraction is generated between the adsorption magnet and the iron sheet. The pressing needle 22 provided with the adsorption magnet will rotate in the direction of the thickness direction of the carrier 10 with the first rotating rod as the center towards the placement groove 11 under the force of this magnetic attraction until the rod body of the pressing rod is flush with the surface of the carrier 10. At this time, the pressing needle 22 is in a closed state and can be used to press and limit the battery cell 40 located in the placement groove 11.

[0044] As a specific example, in this embodiment, the driving member 31 is a driving magnet, which is fixed on the fixing frame 32. The driving magnet and the adsorption magnet repel each other. When the driving component is close to the side of the carrier 10 away from the pressing needle 22, the magnetic field of the driving magnet will pass through the iron sheet and interact with the magnetic field of the adsorption magnet to generate a repulsive force. The adsorption magnet provided on the pressing needle 22 will drive the needle rod part 221 to rotate in a direction away from the placement groove 11 with the first rotating rod as the center under the action of this repulsive force, so as to release the pressing limit of the pressing needle 22 on the battery cell 40.

[0045] See also Figures 2 to 4 Next, the battery cell pressing device in this embodiment will be described with a specific overall structure:

[0046] like Figure 2 As shown, it is a schematic diagram of the layout structure of a single placement groove 11 and its surroundings when the battery cell pressing device in this embodiment is in use. Specifically, a plurality of placement grooves 11 are provided on the surface of the carrier 10, and the plurality of placement grooves 11 are arranged in an array on the carrier 10. The placement groove 11 is a rectangular groove structure, and a step surface is provided inside the placement groove 11 along the circumferential groove wall of the placement groove 11. The step surface is lower than the surface of the carrier 10. When the battery cell 40 is placed in the placement groove 11, the step surface abuts against the battery cell 40 to support the battery cell 40. Furthermore, a plurality of mounting grooves are provided on the carrier 10 between two adjacent placement grooves 11, and a clamping assembly 20 is respectively provided in each mounting groove. It can also be said that a plurality of clamping assemblies 20 are provided around the circumference of the placement groove 11. As a specific example, in this embodiment, Figure 2 As shown, six clamping assemblies 20 are provided on the circumference of the placement groove 11. Specifically, two clamping assemblies 20 are respectively provided on both sides of the placement groove 11 in the length direction, and a clamping assembly 20 is respectively provided in the middle of both sides in the width direction of the placement groove 11. In actual use, the six clamping assemblies 20 operate simultaneously to limit and fix the battery cell 40 in the placement groove 11, thereby ensuring the stability of the battery cell 40 on the carrier 10. It should be noted that the figure shows a schematic diagram of the local structure of a certain placement groove 11 and its surroundings when the battery cell clamping device in the present application is in use.

[0047] The clamping assembly 20 includes a mounting seat 21, which is located in a mounting groove on the carrier 10, and the mounting seat 21 is fixed to the carrier 10 by a plurality of fasteners 50. In this embodiment, the fasteners 50 are rivets, and the two ends of the mounting seat 21 in the length direction are fastened to the carrier 10 by rivets. Furthermore, a placement groove 11 and a pressing pin 22 are respectively provided on two opposite sides in the width direction of the mounting seat 21, and each pressing pin 22 is respectively configured with a first rotating rod and a magnetic metal sheet, such as Figure 2 As shown in the figure, a combination consisting of a pressing pin 22, a first rotating rod and a magnetic metal sheet is respectively provided at both ends of the mounting base 21 in the length direction, and the two combinations are symmetrically arranged about the center of the mounting base 21. In this way, the two pressing pins 22 are oppositely arranged on both sides of the mounting base 21 to limit the battery cells 40 in the two placement grooves 11 on both sides of the mounting base 21 respectively. Such a design can greatly improve the performance of a single clamping assembly 20.

[0048] like Figure 3As shown, the first rotating rod and the iron sheet are both arranged inside the mounting seat 21. Specifically, the first rotating rod is arranged inside the mounting seat 21 along the length direction of the mounting seat 21. In this way, it can be avoided that the first rotating rod is coated with a film during the coating process of the battery cell 40, which affects the rotation effect of the first rotating rod. Furthermore, one end of the adsorption magnet in the pressing needle 22 is fixedly connected to the rod body of the first rotating rod, and the end of the needle rod part 221 in the pressing needle 22 away from the adsorption magnet is located directly above the edge of the placement groove 11. An iron sheet is fixedly arranged on the inner bottom wall of the mounting seat 21, and the iron sheet and the adsorption magnet in the pressing needle 22 are arranged opposite to each other, and a gap is provided between the magnetic metal sheet and the adsorption magnet. During actual use, the pressing needle 22 is usually in a closed state. Specifically, the magnetic field of the adsorption magnet on the pressing needle 22 acts on the iron sheet, so that the entire iron sheet also generates a magnetic field and interacts with the magnetic field on the adsorption magnet, so that the adsorption magnet can adsorb the iron sheet and drive the pressing needle 22 to rotate in the direction of the iron sheet with the first rotating rod as the center. The angle between the needle rod part 221 on the pressing needle 22 and the surface of the carrier 10 gradually decreases until the plane where the rod body of the needle rod part 221 of the pressing needle 22 is located is flush with the plane where the placement groove 11 is located, thereby realizing the closing of the pressing needle 22 and achieving the purpose of limiting the battery cell 40 by the pressing needle 22. When the pressing needle 22 is in a closed state, the continuous attraction of the adsorption magnet to the iron sheet can ensure the stability of the pressing needle 22 limiting the battery cell 40.

[0049] like Figure 4 As shown, when the driving magnet approaches the side of the carrier 10 away from the pressing needle 22, the magnetic field on the driving magnet penetrates the iron sheet and repels each other with the adsorption magnet. In the process of the driving magnet gradually approaching the carrier 10, the magnetic field of the driving magnet passing through the iron sheet becomes more, and the repulsive force on the adsorption magnet is greater, so that the adsorption magnet moves in the direction away from the iron sheet, and drives the needle rod 221 to rotate in the direction away from the placement slot 11 with the first rotating rod as the center, and the angle between the rod body of the needle rod 221 on the pressing needle 22 and the surface of the carrier 10 gradually increases, and the limiting state of the pressing needle 22 on the battery cell 40 is released, and the pressing needle 22 is in the open state. At this time, the battery cell 40 can be placed in the placement slot 11 or taken out from the placement slot 11 by an external mechanical device. When the pressing needle 22 needs to be closed, the driving assembly can be moved in the direction away from the carrier 10, so that the driving magnet is away from the adsorption magnet. Under the action of the attraction between the adsorption magnet and the iron sheet, the pressing needle 22 will rotate in the opposite direction with the first rotating rod as the center in the direction of the iron sheet until the pressing needle 22 returns to the closed state.

[0050] It should be noted that the opening method of the pressure needle in this embodiment is an up and down opening method of rotating around the first rotating rod, but it is not limited to the above opening method, and other methods that can achieve the purpose of the present invention can also be used. In some embodiments, such as Figure 5As shown, another structural principle design diagram of the battery cell pressing device in this embodiment is shown. Specifically, the first connecting member 23 is a second rotating rod, and the second rotating rod is rotatably arranged on the carrier 10 along the thickness direction of the carrier 10. The pressing needle 22 is arranged on the side surface of the carrier 10 with the placement groove 11 along the radial direction of the second rotating rod, and one end of the pressing needle 22 is fixedly connected to one end of the second rotating rod, and the other end of the second rotating rod is fixedly provided with one end of the second connecting member 24. The second connecting member 24 is arranged on the side surface of the carrier 10 away from the placement groove 11. The driving member 31 cooperates with the second connecting member 24 to drive the pressing needle 22 to perform horizontal rotation movement around the second rotating rod, so that the end of the pressing needle 22 is away from The pressing needle 22 is placed above the edge of the placement groove 11, thereby releasing the pressing limit of the battery cell 40 by the pressing needle 22. Specifically, the driving member 31 can be a driving magnet, and the second connecting member 24 can be an adsorption magnet. The driving magnet and the adsorption magnet repel each other. When the driving magnet approaches the adsorption magnet, one end of the adsorption magnet is fixedly connected to the rotatable second rotating rod. Therefore, under the action of the repulsive force of the driving magnet, the adsorption magnet can rotate horizontally around the second rotating rod to move away from the adsorption magnet. In this process, the movement of the pressing needle is manifested as the pressing needle synchronously rotating horizontally around the second rotating rod, and the end of the pressing needle is away from the edge of the placement groove, thereby achieving the purpose of releasing the pressing needle from pressing the battery cell.

[0051] To sum up, the opening of the pressing needle 22 in the pressing assembly 20 of the battery cell pressing device in the first embodiment of the present invention is achieved by the repulsive force between the driving magnet and the adsorption magnet, and the closing of the pressing needle 22 is achieved by the attractive force between the adsorption magnet and the iron sheet. The whole operation process is convenient and fast, and it is also convenient for the battery cell 40 to be taken and placed in the placement slot 11, and the continuous attractive force of the adsorption magnet on the iron sheet can ensure the stability of the pressing needle 22 limiting the battery cell 40.

[0052] Embodiment 2

[0053] See also Figures 6 to 9 , shown is a battery cell pressing device in a second embodiment of the present invention. The battery cell pressing device in this embodiment is different from the battery cell pressing device in the first embodiment in that: in this embodiment, the closing of the pressing needle 22 is achieved by magnetic attraction, and the opening of the pressing needle 22 is achieved by mechanical external force pushed by a push rod.

[0054] Specifically, Figure 6As shown, a through hole 12 is provided on the carrier 10, and the through hole 12 is arranged along the thickness direction of the carrier 10, and the through hole 12 is arranged opposite to the pressing needle 22. Furthermore, the driving member 31 is a push rod, and the through hole 12 on the carrier 10 can be used for the push rod to pass through. In this embodiment, the push rod is a flat rod-shaped structure, and its top end for abutting against the pressing needle 22 is a rounded design. Such a design can reduce the damage to the pressing needle 22 when the push rod pushes the pressing needle 22 open, and on the basis of ensuring that the pressing needle 22 can be opened by force, the service life of the pressing needle 22 can be greatly improved. In actual use, the push rod penetrates into the through hole 12 to abut against the pressing needle 22 and push the pressing needle 22 open, so that the pressing needle 22 rotates in the direction away from the placement groove 11 with the first rotating rod as the center, so as to release the pressing limit of the pressing needle 22 on the battery cell 40.

[0055] Furthermore, the magnetic connection part 222 on the pressure pin 22 in this embodiment is a magnetic metal sheet, and the second connection member 24 provided on the carrier 10 is an adsorption magnet. Figures 7 to 9 As shown, an adsorption magnet is fixed on the bottom arm inside the mounting seat 21 , and the magnetic connecting portion 222 on the pressing pin 22 is a magnetic metal sheet, that is, an iron sheet is arranged on the pressing pin 22 .

[0056] In actual use, the use principle of the battery cell pressing device of this embodiment can be: when the pressing pin 22 needs to be opened, the driving assembly can be moved toward the side of the carrier 10 away from the pressing pin 22, and the push rod can be inserted into and passed through the through hole 12 on the mounting seat 21 to abut against the surface of the pressing pin 22, and then an external force is applied to push the pressing pin 22 open. In this process, the pressing pin 22 will rotate in the direction away from the mounting seat 21 with the first rotating rod as the center, until the pressing pin 22 is fully opened, the battery cell 40 can be put into the corresponding placement groove 11 or taken out from the placement groove 11 through the angle gap formed between the pressing pin 22 and the surface of the carrier 10 through an external mechanical device. Then, when the battery cell 40 is placed or taken out, the entire driving assembly can be moved in the reverse direction, so that the push rod gradually withdraws from the through hole 12 to the outside of the carrier 10. In this process, the pressing pin 22 will rotate in the reverse direction of the direction of the iron sheet with the first rotating rod as the center under the action of the mutual attraction between the iron sheet and the adsorption magnet, until the pressing pin 22 returns to the closed state.

[0057] In summary, the opening of the pressing pin 22 in the pressing assembly 20 of the battery cell pressing device in the second embodiment of the present invention is achieved by the mechanical external force of the push rod pushing the pressing pin 22 open, and the closing of the pressing pin 22 is achieved by the attraction between the adsorption magnet and the iron sheet.

[0058] Embodiment 3

[0059] See also Figures 10 to 13, shown is a battery cell pressing device in the third embodiment of the present invention. The battery cell pressing device in this embodiment is different from the battery cell pressing device in the first embodiment in that: in this embodiment, the closing of the pressing needle 22 is achieved by the elastic force of the torsion spring on the pressing needle 22 in the free state, and the opening of the pressing needle 22 is achieved by the mechanical external force of the push rod.

[0060] Specifically, Fig.10 As shown, a through hole 12 is provided on the carrier plate 10, and the through hole 12 is arranged along the thickness direction of the carrier plate 10, and the through hole 12 is arranged opposite to the pressing needle 22. Further, the driving member 31 is a push rod, and the through hole 12 on the carrier plate 10 can be passed through by the push rod. In this embodiment, the push rod is a flat rod-shaped structure, and its top end for contacting with the pressing needle 22 is a rounded corner design. Such a design can reduce the damage to the pressing needle 22 when the push rod pushes the pressing needle 22 open, and on the basis of ensuring that the pressing needle 22 can be opened by force, the service life of the pressing needle 22 can be greatly improved. Furthermore, the magnetic connection part 222 is not provided on the pressing needle 22 in this embodiment, the first connecting member 23 is a third rotating rod, a connecting column 25 is fixedly provided on the carrier 10, the connecting column 25 is arranged along the thickness direction of the carrier 10, the third rotating rod is arranged along the radial direction of the connecting column 25, and one end of the third rotating rod is rotatably connected to one end of the connecting column 25, and the other end of the third rotating rod is connected to one end of the pressing needle 22, so as to realize the rotational connection between the pressing needle 22 and the carrier 10. Furthermore, the second connecting member 24 is a torsion spring, which is sleeved on the third rotating rod, and one end of the torsion spring is fixedly connected to the pressing needle 22, and the other end of the torsion spring is fixedly connected to the connecting column 25. When the torsion spring is in a free state, the end of the pressing needle 22 away from the torsion spring is located just above the edge of the placement groove 11, so as to press and limit the battery cell 40.

[0061] As a specific example, Figures 10 to 13 As shown, a plurality of mounting through holes 12 are provided on the carrier plate 10 in this embodiment between two adjacent placement grooves 11. The mounting through holes 12 are arranged along the thickness direction of the carrier plate 10. Specifically, two mounting through holes 12 are provided at intervals on both sides of the placement groove 11 in the length direction, and one mounting through hole 12 is provided in the middle of both sides in the width direction of the placement groove 11.

[0062] Furthermore, each mounting through hole 12 is provided with a bottom plate portion 212 and a cover plate portion 211 on both axial sides, respectively. The bottom plate portion 212 and the cover plate portion 211 are arranged opposite to each other and completely cover the above-mentioned mounting through hole 12, and the cover plate portion 211 is fixed to a side of the carrier 10 on which the placement groove 11 is provided through a fastener 50, and the bottom plate portion 212 is fixed to a side of the carrier 10 away from the placement groove 11 through the fastener 50, wherein the fastener 50 can be a fastener 50 such as a rivet. In the present embodiment, the two sides of the length direction of the cover plate portion 211 and the two sides of the length direction of the bottom plate portion 212 are fastened to the carrier 10 through a rivet respectively.

[0063] Furthermore, the above-mentioned connecting column 25, the third rotating rod and the torsion spring are arranged in the accommodating cavity formed by the surface of the bottom plate portion 212, the surface of the cover plate portion 211 and the circumferential inner wall of the mounting through hole 12. Specifically, a through groove is respectively arranged in the middle area on both sides of the width direction of the cover plate portion 211, and the through groove extends from the edge of the cover plate portion 211 toward the middle of the cover plate portion 211, and the total length of the through groove is less than the width of the cover plate portion 211, and a pressing pin 22 is respectively arranged in each through groove. The connecting column 25 is arranged along the thickness direction of the carrier plate 10, and one end of the connecting column 25 is fixed on the bottom plate portion 212, and a gap is arranged between the other end of the connecting column 25 and the cover plate portion 211. One end of the third rotating rod is rotatably connected to one end of the connecting column 25 close to the cover portion 211, and the other end of the third rotating rod is fixedly connected to one end of the pressing needle 22, and a torsion spring is sleeved on the third rotating rod, and one end of the torsion spring is fixedly connected to the pressing needle 22, and the other end of the torsion spring is fixedly connected to the connecting column 25. In actual use, when the torsion spring is in a free state, the elastic force of the torsion spring itself can make the pressing needle 22 always in a closed state and ensure the stability of the pressing needle 22 in the closed state. At this time, the end of the pressing needle 22 away from the torsion spring is located directly above the edge of the placement slot 11, and can be used to limit the battery cell 40.

[0064] Furthermore, the bottom plate 212 is provided with a through hole 12 for the push rod to pass through, and the through hole 12 is connected to the through slot through the accommodating cavity. In actual use, when it is necessary to open the press pin 22 to carry out the pick-up and placement operation of the battery cell 40, the entire drive assembly can be moved toward the side of the carrier 10 away from the press pin 22, so that the push rod on the fixing frame 32 passes through the corresponding through hole 12 on the bottom plate 212, the accommodating cavity and the press pin 22 in the through slot of the cover plate 211 in turn, and then an external force is applied to gradually open the press pin 22. In this process, the press pin 22 rotates in a direction away from the cover plate 211 with the connection between the third rotating rod and the connecting column 25 as the rotation center until the press pin 22 is fully opened, and the battery cell 40 can be put into the corresponding placement slot 11 or taken out from the placement slot 11 through the angle gap formed between the press pin 22 and the surface of the cover plate 211 through an external mechanical device. Next, when the battery cell 40 is placed or removed, the entire driving assembly can be moved in reverse so that the push rod gradually withdraws from the through hole 12 to the outside of the carrier 10. During this process, the pressing needle 22 will automatically reset under the reverse elastic force of the torsion spring until the pressing needle 22 returns to the through groove, thereby closing the pressing needle 22.

[0065] To sum up, the opening and closing of the pressing pin 22 in the pressing assembly 20 of the battery cell pressing device in the third embodiment of the present invention are both achieved by mechanical external force. Specifically, the opening of the pressing pin 22 is achieved by a push rod pushing the pressing pin 22 open, and the closing of the pressing pin 22 is achieved by the reverse elastic force of the torsion spring.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above-described embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of application of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention application shall be subject to the attached claims.

Claims

1. A battery cell pressing device, characterized in that: include: A carrier plate, a plurality of clamping assemblies arranged on the carrier plate, and a driving assembly adapted to the clamping assembly, wherein the carrier plate is provided with at least one placement groove, the placement groove is used to place the battery sheet, and the plurality of clamping assemblies are arranged around the circumference of the placement groove; The pressing assembly includes at least one first connecting member provided on the carrier, a pressing pin connected to the first connecting member, and a second connecting member provided opposite to the pressing pin, wherein one end of the pressing pin is rotatably connected to the carrier through the first connecting member, and the other end of the pressing pin is located just above the edge of the placement groove, and the pressing pin is pressed and limited to the battery cell by the cooperation between the second connecting member and the pressing pin; The driving assembly includes a fixing frame and at least one driving member arranged on the fixing frame, and the driving member is used to release the pressing limit of the pressing pin on the battery sheet.

2. The battery cell pressing device according to claim 1, characterized in that: The first connecting member is a first rotating rod, which is rotatably disposed on the carrier plate. The pressing needle is disposed along the radial direction of the first rotating rod, and one end of the pressing needle is fixedly connected to the rod body of the first rotating rod.

3. The battery cell pressing device according to claim 2, characterized in that: The pressing needle includes a needle rod part and a magnetic connecting part integrally connected to the needle rod part. One end of the needle rod part is fixedly connected to the rod body of the first rotating rod, and the other end of the needle rod part is located directly above the edge of the placement groove. The magnetic connecting part and the second connecting part are arranged opposite to each other and attract each other.

4. The battery cell pressing device according to claim 3, characterized in that: The magnetic connection part is an adsorption magnet, and the second connection part is a magnetic metal sheet. The adsorption magnet attracts the magnetic metal sheet to achieve the pressing and limiting of the battery cell by the pressing pin.

5. The battery cell pressing device according to claim 3, characterized in that: The magnetic connection part is a magnetic metal sheet, and the second connection part is an adsorption magnet. The adsorption magnet attracts the magnetic metal sheet to achieve the pressing and limiting of the battery cell by the pressing pin.

6. The battery cell pressing device according to claim 4, characterized in that: The driving member is a driving magnet, and the driving magnet and the adsorption magnet repel each other. When the driving component approaches the side of the carrier plate away from the pressing needle, the adsorption magnet is repelled by the driving magnet and drives the needle rod part to rotate in the direction away from the placement slot with the first rotating rod as the center, so as to release the pressing limit of the pressing needle on the battery cell.

7. The battery cell pressing device according to claim 5, characterized in that: The driving member is a push rod, and the carrier plate is provided with a through hole for the push rod to pass through. The through hole is arranged opposite to the pressing needle. The push rod passes through the through hole to abut against the pressing needle and push the pressing needle open, so that the pressing needle rotates in a direction away from the placement groove with the first rotating rod as the center, so as to release the pressing limit of the pressing needle on the battery cell.

8. The battery cell pressing device according to claim 1, characterized in that: The first connecting member is a second rotating rod, and the second rotating rod is rotatably arranged on the carrier board along the thickness direction of the carrier board. The pressing needle is arranged along the radial direction of the second rotating rod, and one end of the pressing needle is fixedly connected to one end of the second rotating rod, and the other end of the second rotating rod is fixedly provided with one end of the second connecting member. The driving member cooperates with the second connecting member to drive the pressing needle to rotate on the plane where the carrier board surface is located with the second rotating rod as the center, so that the end of the pressing needle is away from the edge of the placement groove to release the pressing limit of the pressing needle on the battery cell.

9. The battery cell pressing device according to claim 1, characterized in that: The first connecting member is a third rotating rod, a connecting column is fixedly provided on the carrier plate, the connecting column is arranged along the thickness direction of the carrier plate, the third rotating rod is arranged along the radial direction of the connecting column, and one end of the third rotating rod is rotatably connected to one end of the connecting column, and the other end of the third rotating rod is connected to one end of the pressing needle to realize the rotational connection between the pressing needle and the carrier plate.

10. The battery cell pressing device according to claim 9, characterized in that: The second connecting member is a torsion spring, which is sleeved on the third rotating rod, and one end of the torsion spring is fixedly connected to the pressing pin, and the other end of the torsion spring is fixedly connected to the connecting column. When the torsion spring is in a free state, the end of the pressing pin away from the torsion spring is located directly above the edge of the placement groove, so as to press and limit the battery cell.

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