Battery monomer liquid injection system and battery production line

Abstract

The embodiment of the utility model provides a battery monomer liquid injection system and a battery production line, the battery monomer liquid injection system comprises a rack, liquid injection equipment, sealing equipment and a bearing piece, the rack is provided with a first magnetic drive conveying line, the first magnetic drive conveying line extends along the length direction of the rack, the liquid injection equipment is arranged at one side of the first magnetic drive conveying line, and the sealing equipment is arranged at the other side of the first magnetic drive conveying line; the first magnetic drive conveying line is used for injecting liquid into a shell of a battery monomer, the sealing equipment is arranged on one side of the first magnetic drive conveying line and located on the downstream of the liquid injection equipment, the sealing equipment is used for sealing a liquid injection hole of the shell subjected to liquid injection, the bearing piece is used for bearing the battery monomer, and the first magnetic drive conveying line is arranged to magnetically drive the bearing piece to move on the first magnetic drive conveying line. And the bearing piece drives the battery monomers to sequentially pass through the liquid injection equipment and the sealing equipment. According to the invention, the space utilization rate of a production site is improved, and the production cost of the battery monomers is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and more particularly, to a battery cell liquid injection system and a battery production line. BACKGROUND

[0002] Battery cells are widely used in electronic devices such as mobile phones, notebook computers, electric cars, electric cars, electric planes, electric ships, electric toy cars, electric toy ships, electric toy planes, electric tools, and the like.

[0003] In the preparation process of battery cells, multiple processes are required, not only the overall production line occupies a large area, and the equipment cost is high, but also the processed battery cells need to be circulated in each process, which requires a long time, and the production efficiency of the battery cells needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides a battery cell liquid injection system and a battery production line to improve the production efficiency of battery cells and reduce production costs.

[0005] In a first aspect, the present application provides a battery cell liquid injection system, comprising a rack, a liquid injection device, a sealing device, a supporting member, a feeding station and a discharging station, the rack has a first magnetic drive conveying line, the first magnetic drive conveying line extends along the length direction of the rack, the liquid injection device is arranged on one side of the first magnetic drive conveying line and is used for injecting liquid into battery cells, the sealing device is arranged on one side of the first magnetic drive conveying line and is located downstream of the liquid injection device, the sealing device is used for sealing the liquid injection hole of the battery cell after liquid injection, the supporting member is used for supporting the battery cell to be processed, along the length direction of the rack, the first magnetic drive conveying line is arranged between the feeding station and the discharging station, the first magnetic drive conveying line is arranged to magnetically drive the supporting member supporting the battery cell to move on the first magnetic drive conveying line, so that the supporting member drives the battery cell to pass through the liquid injection device and the sealing device in sequence from the feeding station and moves to the discharging station.

[0006] In some embodiments of the first aspect, the first magnetic drive conveying line is magnetically cooperated with the support member, and can transfer the battery monomer to the liquid injection device, and then the liquid injection device completes the liquid injection process on the battery monomer. After the liquid injection process is completed, the first magnetic drive conveying line is magnetically cooperated with the support member again to transfer the battery monomer to the sealing device, and then the sealing device completes the liquid injection hole sealing process of the battery monomer. The first magnetic drive conveying line passes through the positions where the liquid injection device and the sealing device are located, integrates the liquid injection process and the liquid injection hole sealing process on one conveying line, and magnetically drives the support member to move along the first magnetic drive conveying line to transfer the battery monomer to the liquid injection device and the sealing device, thereby reducing the required equipment investment between the liquid injection process and the sealing process, reducing the operation of lifting and lowering the battery monomer and the transfer time, improving the production efficiency, reducing the damage risk of the battery monomer due to the transfer and lifting, improving the qualified rate of the battery monomer, and reducing the production cost of the battery monomer. Moreover, the first magnetic drive conveying line is magnetically cooperated with the support member, and the extension form of the first magnetic drive conveying line along the length direction is relatively free, for example, can be arranged in a continuous and curved extension form along the length direction. In this way, according to the actual needs of the factory building, the extension mode of the first magnetic drive conveying line can be freely arranged, and the structure is simple, has strong adaptability, and can reduce the space occupied by the equipment and the equipment investment cost, thereby also reducing the production cost of the battery monomer.

[0007] In some embodiments, the rack further has a second magnetic drive conveying line, the second magnetic drive conveying line extends along the length direction of the rack, and the first magnetic drive conveying line is arranged on the upper side of the second magnetic drive conveying line in a spaced manner. Along the length direction of the rack, the second magnetic drive conveying line is arranged between the feeding station and the discharging station. The second magnetic drive conveying line is arranged to magnetically drive the support member to move on the second magnetic drive conveying line, so that the support member flows back to the feeding station from the discharging station.

[0008] In the above technical solution, by arranging the second magnetic drive conveying line, the support member can automatically flow back to the feeding station after completing the battery monomer conveying, so that the support member can be recycled and reused, and the automation efficiency is improved. Moreover, the two conveying lines both magnetically drive the support member to move, which simplifies the overall driving structure of the support member and the conveying line.

[0009] In some embodiments, at least one of the liquid injection device and the sealing device includes a processing device and a detection device, and the detection device is arranged downstream of the processing device along the conveying direction of the first magnetic drive conveying line. The rack further has a third magnetic drive conveying line, the third magnetic drive conveying line is arranged to magnetically drive the support member to move on the third magnetic drive conveying line, so that the support member drives the battery monomer to flow back to the processing device from the detection device.

[0010] In the technical solution, unqualified products can be screened out in the process, and the unqualified products can be changed into qualified products through the third magnetic drive conveying line backflow for secondary processing, so as to reduce the defective rate.

[0011] In some embodiments, the sealing device comprises a processing device, and the processing device of the sealing device is a first processing device. The sealing device comprises a detection device, and the detection device of the sealing device is a first detection device. The first detection device is located downstream of the first processing device in the conveying direction of the first magnetic drive conveying line. The third magnetic drive conveying line comprises a first sub-line, and the third magnetic drive conveying line is located between the first processing device and the first detection device. The first sub-line comprises a part of the second magnetic drive conveying line between the first processing device and the first detection device.

[0012] In the technical solution, the first sub-line multiplexes part of the second magnetic drive conveying line, which is beneficial to save the equipment occupied space, improve the space utilization rate, and adapt to the compact layout requirements of small and medium-sized workshops.

[0013] In some embodiments, the sealing device comprises a processing device, and the processing device of the sealing device is a first processing device. The sealing device comprises a detection device, and the detection device of the sealing device is a first detection device. The first detection device is located downstream of the first processing device in the conveying direction of the first magnetic drive conveying line. The third magnetic drive conveying line comprises a first sub-line, and the third magnetic drive conveying line is located between the first processing device and the first detection device. The first sub-line comprises a part of the second magnetic drive conveying line between the first processing device and the first detection device.

[0014] In the technical solution, since the battery monomer has not been sealed after completing the liquid injection, the second sub-line and the first magnetic drive conveying line are arranged side by side, which is beneficial to maintain the pose of the battery monomer, reduce the possibility of electrolyte overflow caused by shaking of the unqualified battery monomer after liquid injection, reduce the liquid injection time of subsequent secondary liquid injection, and improve the rework efficiency.

[0015] In some embodiments, the extension shape of the first magnetic drive conveying line comprises one or more combinations of straight lines and curves.

[0016] In the technical solution, the arrangement range of the rack is improved, so that the battery monomer liquid injection system can adapt to workshops of different shapes, and the space utilization rate is improved.

[0017] In some embodiments, the support member comprises a magnetic part, a clamping part, and a bearing part. The clamping part is used to clamp at least one side of the first magnetic drive conveying line in the width direction of the rack. The magnetic part is arranged on the clamping part, and the first magnetic drive conveying line is arranged to be magnetically coupled with the magnetic part to drive the support member to move on the first magnetic drive conveying line. The bearing part is connected with the clamping part, and the bearing part is used to bear the battery monomer.

[0018] In the technical scheme, the support member can clamp the edge of the second magnetic driving conveying line (and / or the third magnetic driving conveying line) from the edge of the first magnetic driving conveying line, so that the mutual switching of the support member between the first magnetic driving conveying line, the second magnetic driving conveying line and the third magnetic driving conveying line is simplified, and the automation degree of the battery monomer liquid injection system is improved.

[0019] In some embodiments, the rack comprises a plurality of straight segments and a curved segment connecting adjacent straight segments, the curved segment comprises a first side in the width direction, and the first side is a side of the curved segment facing the bending center. In the same plane and in the first direction, the projection of the bearing part on the first side exceeds the projection of the bearing part on the first side by a size d, the curvature radius of the curved segment is R, and d and R satisfy the relationship: 0.02R≤d≤0.2R.

[0020] In the technical scheme, when the support member moves along the curved segment, the battery monomer has a tendency to fall under the action of centrifugal force. By setting d≥0.2R, the part of the bearing part protruding to the first side can provide sufficient support force to improve the stability of the support member. By setting d≤0.2R, it is beneficial to reduce the possibility of interference between the parts of the adjacent two support members protruding to the first side when the adjacent two support members pass through the first side of the curved segment at the same time.

[0021] In some embodiments, the bearing part comprises a first wall part opposite in the length direction, and the first wall part is configured to be arranged opposite to the large face of the battery monomer, and in the same plane and in the length direction, the projection of the first wall part at least partially overlaps the projection of the large face of the battery monomer.

[0022] In the technical scheme, the first wall part is a side wall of the bearing part opposite in the length direction of the rack. When the support member moves with the battery monomer, the first wall part can limit and support the large face of the battery monomer, thereby reducing the possibility of the battery monomer falling during conveying. The projection of the first wall part and the projection of the large face of the battery monomer at least partially overlap, which is beneficial to increase the contact area with the battery monomer and improve the stability of the battery monomer during conveying.

[0023] In some embodiments, the support member is provided with a through hole, and the liquid injection device and the sealing device each comprise a jacking device arranged on the rack. The jacking device is used to jack the battery monomer from the support member to the processing area of the liquid injection device and / or the sealing device through the through hole.

[0024] In the technical scheme, by arranging the jacking device, the battery monomer is separated from the support member, thereby reducing the possibility of interference between the battery monomer and the processing device during the liquid injection process and the sealing process. At the same time, the battery monomer is positioned with the positioning mechanism in the processing device, thereby improving the production yield of the battery monomer during the liquid injection process and the sealing process.

[0025] In some embodiments, the liquid injection device and the sealing device each further comprise a positioning mechanism arranged above the corresponding jacking device, for positioning the position of the battery cell jacked by the jacking device.

[0026] In the above technical solution, by arranging the positioning mechanism, the position accuracy of the battery cell in the preparation process is improved, and the possibility of liquid leakage and unqualified welding sealing caused by position deviation in the preparation process is reduced.

[0027] In a second aspect, the application provides a battery production line comprising the battery cell liquid injection system according to any one of the embodiments of the first aspect.

[0028] The above description is only a summary of the technical solutions of the application. In order to enable the technical means of the application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application. Obviously, the drawings described below are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0030] Figure 1 A top view schematic diagram of the battery cell liquid injection system provided by some embodiments of the application;

[0031] Figure 2 A partial enlarged view of the battery cell liquid injection system provided by some embodiments of the application;

[0032] Figure 3 An axial side schematic diagram of the battery cell liquid injection system provided by some embodiments of the application;

[0033] Figure 4 A partial enlarged view of the battery cell liquid injection system provided by some embodiments of the application.

[0034] The reference signs of the specific embodiments are as follows:

[0035] 100, battery cell; 10, rack; 11, first magnetic drive conveying line; 12, second magnetic drive conveying line; 13, third magnetic drive conveying line; 131, first sub-line; 1311, first branch magnetic drive conveying line; 1312, second branch magnetic drive conveying line; 132, second sub-line; L, straight line segment; S, curved segment;

[0036] 20, liquid injection equipment; 21, second processing device; 22, second detection device;

[0037] 30, sealing equipment; 31, first processing device; 32, first detection device;

[0038] 40, supporting member; 41, clamping portion; 42, magnetic portion; 43, bearing portion; 431, first wall portion; 50, feeding station; 60, discharging station; 70, jacking device; 80, positioning mechanism; X, length direction; Y, width direction; Z, height direction. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationship.

[0041] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "attach" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The term "and / or" in the present application is only used to describe the relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0044] In the embodiments of the present application, the same reference signs represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the present application.

[0045] "Multiple" appearing in the present application means two or more (including two).

[0046] At present, from the development of market situation, the application of battery device is more and more extensive. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the demand of its market is also increasing.

[0047] In the embodiments of the present application, the battery monomer can be a secondary battery, which refers to a battery monomer that can be activated by charging after discharging.

[0048] The battery monomer can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0049] In the production process of the battery monomer, there are multiple manufacturing processes, for example, the liquid injection process and the sealing process. The liquid injection process needs to inject a certain amount of electrolyte into the battery monomer. After the liquid injection is completed, the sealing process seals the liquid injection hole on the battery monomer to form a closed space for the shell of the battery monomer.

[0050] Generally, the equipment involved in the liquid injection process and the equipment involved in the sealing process are arranged in two independent production lines. After the battery monomer completes the liquid injection, it needs to be transferred from the liquid injection production line to the sealing production line by manual handling, mechanical gripper or transitional conveying mechanism, which increases the transfer process time, and the two independent production lines need to be equipped with conveyors, driving mechanisms, etc. respectively, which leads to the problems of large production equipment area and large equipment investment required for production.

[0051] Based on the above technical problems, the battery monomer injection system is provided. The first magnetic drive conveying line is magnetically driven with the supporting member, so as to transfer the battery monomer to the injection equipment. Then, the injection equipment completes the injection process of the battery monomer. After the injection process is completed, the first magnetic drive conveying line is magnetically driven with the supporting member again to transfer the battery monomer to the sealing equipment. Then, the sealing equipment completes the injection hole sealing process of the battery monomer. The first magnetic drive conveying line passes through the positions of the injection equipment and the sealing equipment, integrates the injection process and the injection hole sealing process on one conveying line, and drives the supporting member to directly carry the battery monomer to move along the first magnetic drive conveying line and transfer to the injection equipment and the sealing equipment through magnetic force with high precision and high efficiency. Therefore, the equipment investment required between the injection process and the sealing process is reduced, the operation of up and down handling of the battery monomer and the transfer time are reduced, the production efficiency is improved, the damage risk of the battery monomer due to the transfer and handling is reduced, the qualified rate of the battery monomer is improved, and the production cost of the battery monomer is reduced. Moreover, the first magnetic drive conveying line is magnetically driven with the supporting member, the extension form of the first magnetic drive conveying line along the length direction is relatively free, for example, the first magnetic drive conveying line can be arranged in a continuous and curved extension form along the length direction. Therefore, according to the actual needs of the factory building, the extension mode of the first magnetic drive conveying line can be freely arranged, the structure is simple, the adaptability is strong, the space occupied by the equipment and the equipment investment cost can be reduced, and thus the production cost of the battery monomer can be reduced.

[0052] Figure 1 A top view schematic diagram of the battery monomer injection system provided by some embodiments of the present application is provided. Figure 2 A partial enlarged view of the battery monomer injection system provided by some embodiments of the present application is provided.

[0053] Please refer to Figure 1 and Figure 2According to some embodiments of the present application, the present application provides a battery cell liquid injection system, which comprises a rack 10, a liquid injection device 20, a sealing device 30, a supporting member 40, an upper loading station 50 and a lower unloading station 60. The rack 10 has a first magnetic drive conveying line 11 extending along the length direction X of the rack 10. The liquid injection device 20 is arranged at one side of the first magnetic drive conveying line 11 and used for injecting liquid into the shell of a battery cell 100. The sealing device 30 is arranged at one side of the first magnetic drive conveying line 11 and located downstream of the liquid injection device 20, and is used for sealing the liquid injection hole of the shell after the liquid injection is completed. The supporting member 40 is used for supporting the battery cell 100 to be processed. Along the length direction X of the rack 10, the first magnetic drive conveying line 11 is arranged between the upper loading station 50 and the lower unloading station 60, and the first magnetic drive conveying line 11 is arranged to magnetically drive the supporting member 40 to move on the first magnetic drive conveying line 11, so that the supporting member 40 drives the battery cell 100 to pass through the liquid injection device 20 and the sealing device 30 in sequence from the upper loading station 50 and move to the lower unloading station 60.

[0054] The battery cell liquid injection system comprises the rack 10, which is a support frame of the whole system and provides installation reference and bearing support for the first magnetic drive conveying line 11, the liquid injection device 20 and the sealing device 30, etc. The rack 10 has the first magnetic drive conveying line 11, which can drive the supporting member 40 to move through magnetic field force.

[0055] Exemplarily, the first magnetic drive conveying line 11 comprises a magnetic field generating unit (such as an electromagnetic coil), and the supporting member 40 can comprise a magnetic part 42 (such as a permanent magnet). The magnetic field generating unit and the magnetic part 42 form a stable magnetic force coupling. For example, the electromagnetic coil generates a magnetic field when energized, which attracts or repels the supporting member 40 and drives it to move. The first magnetic drive conveying line 11 can control the moving speed of the supporting member 40 by adjusting the magnetic field strength (such as the current size), and realize the start and stop of the supporting member 40 by magnetic field switching (such as the segmented coil is energized or de-energized in sequence).

[0056] The first magnetic drive conveying line 11 extends along the length direction X of the rack 10, i.e. the extension direction of the first magnetic drive conveying line 11 is the same as the length direction X of the rack 10. The length direction X of the rack 10 can be the conveying direction of the supporting member 40.

[0057] The battery cell 100 refers to a battery cell in a manufacturing process. Exemplarily, the battery cell includes a shell including an end cover and a shell body, the end cover being covered on the shell body to form a containing space. A liquid injection hole is provided on the shell, and the liquid injection hole can communicate the containing space with the outside. Before the liquid injection process of the battery cell, the components such as the electrode assembly of the battery cell need to be placed in the shell body, and the end cover is covered on the shell body (in the embodiment of the present application, the battery cell which has not been injected with liquid is referred to as the battery cell 100).

[0058] The liquid injection device 20 is used for injecting liquid into the shell of the battery cell 100, and the liquid injection device 20 can include a front weighing mechanism, a liquid injection mechanism, a rear weighing mechanism, a glue pin mechanism, a glue pressing mechanism, a mechanical wiping liquid injection hole mechanism, etc. Optionally, under the magnetic driving of the first magnetic driving conveying line 11, the supporting member 40 can drive the battery cell 100 to sequentially pass through the multiple processing mechanisms of the liquid injection device 20 to complete the liquid injection process of the battery cell 100. After the battery cell 100 moves to the position of the liquid injection mechanism, the liquid injection hole of the battery cell 100 is sealed with the liquid injection nozzle of the liquid injection mechanism, and the liquid injection mechanism injects electrolyte into the shell of the battery cell 100 through the liquid injection nozzle.

[0059] The sealing device 30 is used for sealing the liquid injection hole of the shell after the liquid injection is completed. The sealing device 30 is located downstream of the liquid injection device 20, and the first magnetic driving conveying line 11 drives the battery cell 100 to be processed to move to the liquid injection device 20 to complete the liquid injection process, and then the first magnetic driving conveying line 11 drives the battery cell 100 after the liquid injection to move to the sealing device 30 to complete the sealing process. Optionally, the sealing device 30 can include a cleaning mechanism, an aluminum pin mechanism, a laser welding mechanism, and a post-welding detection mechanism. Under the magnetic driving of the first magnetic driving conveying line 11, the supporting member 40 can drive the battery cell 100 to sequentially pass through the multiple processing mechanisms of the sealing device 30 to complete the sealing process of the battery cell 100. Optionally, the cleaning mechanism can include a laser cleaning mechanism and a carbon dioxide cleaning mechanism.

[0060] In the production process, upstream refers to the previous processing link (such as the liquid injection process), and downstream refers to the subsequent link after the previous processing link (such as the sealing process). The device or process located downstream needs to wait for the upstream device or process to complete the processing before receiving the battery cell 100 and performing subsequent operations. In the embodiment of the present application, the direction from the liquid injection process to the sealing process is the direction from upstream to downstream.

[0061] Optionally, the first magnetic driving conveying line 11 has two sides along the width direction Y of the rack 10, and the liquid injection device 20 can be arranged on one side. Of course, when the number of the liquid injection devices 20 is multiple, the multiple liquid injection devices 20 can be arranged on the two sides or on the same side.

[0062] Optionally, the sealing device 30 can be arranged on one side. Of course, when the number of sealing devices 30 is multiple, the multiple sealing devices 30 can be arranged on both sides or on the same side.

[0063] The support member 40 is used to support the battery monomer 100, and the support member 40 can carry the battery monomer 100 and drive the battery monomer 100 to move. Optionally, the carrying space of the support member 40 for carrying the battery monomer 100 can be matched with the shape of the battery monomer 100. Optionally, one support member 40 can support one or more battery monomers 100. Optionally, the number of support members 40 can be one or more, and when the number of support members 40 is multiple, the adjacent support members 40 are arranged at intervals to reduce the possibility of mutual interference of the support members 40.

[0064] The feeding station 50 refers to an operation area where a manual or automatic feeding mechanism places the battery monomer 100 to be processed on the support member 40.

[0065] The discharging station 60 refers to an operation area where a manual or automatic discharging mechanism takes out the processed battery monomer 100 (the battery monomer 100 after completing the liquid injection and sealing processes) from the support member 40.

[0066] According to the battery monomer liquid injection system of the embodiment of the present application, the first magnetic drive conveying line 11 is magnetically driven in cooperation with the support member 40, so as to transfer the battery monomer 100 to the liquid injection device 20, and then the liquid injection device 20 completes the liquid injection process of the battery monomer 100. After the liquid injection process is completed, the first magnetic drive conveying line 11 is magnetically driven in cooperation with the support member 40 again, so as to transfer the battery monomer 100 to the sealing device 30, and then the sealing device 30 completes the liquid hole sealing process of the battery monomer 100. The first magnetic drive conveying line 11 passes through the positions where the liquid injection device 20 and the sealing device 30 are located, so as to integrate the liquid injection process and the liquid hole sealing process on one conveying line, and through the magnetic force high-precision and high-efficiency driving, the support member 40 can directly carry the battery monomer 100 to move along the first magnetic drive conveying line 11 and transfer to the liquid injection device 20 and the sealing device 30, which reduces the required equipment investment between the liquid injection process and the sealing process, reduces the operation of up and down handling of the battery monomer 100 and the transfer time, improves the production efficiency, and also reduces the damage risk of the battery monomer 100 due to the transfer and handling, improves the qualified rate of the battery monomer, and reduces the production cost of the battery monomer. Moreover, the first magnetic drive conveying line 11 is magnetically driven in cooperation with the support member 40, and the extension form of the first magnetic drive conveying line 11 along the length direction is relatively free, for example, can be arranged in a continuous and curved extension form along the length direction. In this way, according to the actual needs of the factory building, the extension mode of the first magnetic drive conveying line can be freely arranged, which has the advantages of simple structure, strong adaptability, and can reduce the space occupied by the equipment and the equipment investment cost, so as to also reduce the production cost of the battery monomer.

[0067] Figure 3 The axial side view of the battery cell liquid injection system provided by some embodiments of the present application.

[0068] In some alternative embodiments, referring to Figures 1 to 3 The rack 10 also has a second magnetic drive conveying line 12 extending along the length direction X of the rack 10, and the first magnetic drive conveying line 11 is arranged on the upper side of the second magnetic drive conveying line 12 and is spaced apart from the second magnetic drive conveying line 12 along the length direction X of the rack 10. The second magnetic drive conveying line 12 is arranged to move the magnetic force driving support 40 on the second magnetic drive conveying line 12, so as to make the support 40 flow back from the unloading station 60 to the loading station 50.

[0069] The loading station 50 is located at the starting end of the rack 10 (i.e., the loading station 50 is located upstream of the liquid injection device 20), and is connected to the feeding end of the first magnetic drive conveying line 11 (the entrance of the support 40 into the processing flow) and the discharging end of the second magnetic drive conveying line 12 (the outlet of the empty support 40. After the empty support 40 flows out from the end of the second magnetic drive conveying line 12, it directly enters the loading station 50, and the manual or automatic loading mechanism puts the battery cell 100 into the support 40, and then the support 40 enters the first magnetic drive conveying line 11.

[0070] The unloading station 60 is located at the end of the rack 10 (i.e., the unloading station 60 is located downstream of the sealing device 30), and is connected to the discharging end of the first magnetic drive conveying line 11 (the outlet of the processed battery cell 100) and the feeding end of the second magnetic drive conveying line 12 (the inlet of the empty support 40). After the processed battery cell 100 flows into the unloading station 60 from the end of the first magnetic drive conveying line 11, the manual or automatic unloading mechanism takes out the battery cell 100, and then the empty support 40 enters the second magnetic drive conveying line 12 to start flowing back.

[0071] Exemplarily, the battery cell liquid injection system can include multiple stages, such as a feeding stage, a processing stage, a discharging stage, and a backflow stage. In the feeding stage, the second magnetic drive conveying line 12 conveys the empty support 40 to the feeding station 50. An artificial or automatic feeding mechanism places the un-injected battery into the carrying space of the support 40. After the feeding is completed, the starting end electromagnetic coil of the first magnetic drive conveying line 11 is energized to attract the support 40 into the first magnetic drive conveying line 11. In the processing stage, the support 40 is driven by the first magnetic drive conveying line 11 to move along the extension direction of the first magnetic drive conveying line 11, and sequentially passes through the liquid injection device 20 and the sealing device 30 to complete the corresponding process, and finally reaches the discharging station 60. In the discharging stage, after the support 40 enters the discharging station 60, the first magnetic drive conveying line 11 stops driving the support 40, and an artificial or automatic discharging mechanism takes out the processed battery cell 100. In the backflow stage, the empty support 40 is driven by the second magnetic drive conveying line 12 to move along the extension direction of the second magnetic drive conveying line 12, and the moving direction of the support 40 on the second magnetic drive conveying line 12 is opposite to the moving direction of the support 40 on the first magnetic drive conveying line 11, so that the empty support 40 returns to the feeding station 50 and enters the next cycle.

[0072] The second magnetic drive conveying line 12 extends along the length direction X of the rack 10, that is, the extension direction of the second magnetic drive conveying line 12 is the same as the extension direction of the first magnetic drive conveying line 11. The first magnetic drive conveying line 11 is above, and the second magnetic drive conveying line 12 is below. The first magnetic drive conveying line 11 and the second magnetic drive conveying line 12 can be arranged at intervals along the height direction Z of the rack 10, so as to reduce the overall arrangement space of the conveying lines and adapt to workshops of different specifications. Alternatively, the interval between the first magnetic drive conveying line 11 and the second magnetic drive conveying line 12 can be greater than the magnetic field influence radius of the magnetic field generating unit. Alternatively, the driving mode of the second magnetic drive conveying line 12 for driving the support 40 to move can be the same as the driving mode of the first magnetic drive conveying line 11 for driving the support 40 to move.

[0073] In these alternative embodiments, by providing the second magnetic drive conveying line 12, the support 40 can automatically backflow to the feeding station 50 after completing the battery cell 100 conveying, so that the support 40 can be recycled and reused, improving the automation efficiency. Moreover, both conveying lines use magnetic force to drive the support 40 to move, which simplifies the overall driving structure of the support 40 and the conveying lines.

[0074] In some alternative embodiments, please refer to Figures 1 to 3At least one of the liquid injection device 20 and the sealing device 30 comprises a processing device and a detection device, and the detection device is arranged downstream of the processing device along the conveying direction of the first magnetic driving conveying line. The rack 10 further comprises a third magnetic driving conveying line 13, and the third magnetic driving conveying line 13 is arranged to drive the support 40 to move on the third magnetic driving conveying line 13, so that the support 40 drives the battery cell 100 to flow back from the detection device to the processing device.

[0075] The processing device refers to a device assembly for completing a liquid injection or sealing process. For example, the processing device of the liquid injection device 20 can be a liquid injection mechanism, and the processing device of the sealing device 30 can be a laser welding mechanism.

[0076] The detection device refers to a device assembly for detecting the quality of the processing device. For example, the detection device of the liquid injection device 20 can be a post-weighing mechanism, and the detection device of the sealing device 30 can be a post-welding detection mechanism. The detection device is arranged downstream of the processing device, and the detection device can screen out unqualified battery cells 100 (such as insufficient liquid injection amount and sealing weld leakage) to reduce the possibility of unqualified products flowing into the subsequent process.

[0077] The third magnetic driving conveying line 13 is used to convey the battery cell 100 determined as unqualified by the detection device from the detection device to the corresponding processing device, so that the battery cell liquid injection system can further comprise a rework stage. In the rework stage, the battery cell 100 determined as qualified by the detection device will continue to move on the first magnetic driving conveying line 11 under the driving of the support 40 to enter the downstream process. The battery cell 100 determined as unqualified by the detection device will move to the third magnetic driving conveying line 13 under the driving of the support 40, and flow back from the detection device to the feeding end of the processing device under the magnetic driving of the third magnetic driving conveying line 13 to perform secondary processing.

[0078] Optionally, the support 40 carrying the unqualified product and the support 40 carrying the qualified product can be separated by a shunt device, so that the support 40 carrying the unqualified product is reworked by the third magnetic driving conveying line 13, and the support 40 carrying the qualified product moves along the first magnetic driving conveying line 11 to the next process.

[0079] In the above embodiment, unqualified products can be screened out in the process, and secondary processing can be realized by flowing back through the third magnetic driving conveying line 13 to make the unqualified products qualified, thereby reducing the defective rate.

[0080] In some optional embodiments, please refer to Figures 1 to 3The sealing device 30 comprises a processing device, and the processing device of the sealing device 30 is the first processing device 31. The sealing device 30 comprises a detection device, and the detection device of the sealing device 30 is the first detection device 32. In the conveying direction of the first magnetic conveying line, the first detection device is located downstream of the first processing device. The third magnetic conveying line 13 comprises a first sub-line 131, and the third magnetic conveying line 13 is located between the first processing device 31 and the first detection device 32. The first sub-line 131 comprises a part of the second magnetic conveying line located between the first processing device 31 and the first detection device 32.

[0081] Optionally, the first processing device 31 can be a laser welding mechanism.

[0082] Optionally, the first detection device 32 can be a post-welding detection mechanism.

[0083] Optionally, the support 40 can be carried back and forth between the first magnetic conveying line 11 and the second magnetic conveying line 12 by a mechanical hand or the like. For example, the support 40 supporting the battery cell 100 that fails in the sealing process can be carried from the unqualified discharge port of the first detection device 32 to the second magnetic conveying line 12 by a mechanical hand or the like. When the support 40 supporting the battery cell 100 that fails in the sealing process moves to the lower part of the first processing device 31 on the second magnetic conveying line 12, the support 40 is carried from the second magnetic conveying line 12 to the feeding port of the first processing device 31 by a mechanical hand or the like.

[0084] Optionally, the second magnetic conveying line 12 and the first magnetic conveying line 11 are connected by a branch magnetic conveying line. For example, the second magnetic conveying line 12 is connected to the unqualified discharge port of the first detection device 32 through the first branch magnetic conveying line 1311, and the second magnetic conveying line 12 is connected to the feeding port of the first processing device 31 through the second branch magnetic conveying line 1312. When the first detection device 32 determines that the battery cell 100 fails in the sealing process, the support 40 carrying the unqualified product is moved from the first magnetic conveying line 11 to the first branch magnetic conveying line 1311, and then moved to the second magnetic conveying line 12 by the first branch magnetic conveying line 1311. The second magnetic conveying line 12 reversely drives the support 40 carrying the unqualified product to move to the second branch magnetic conveying line 1312, and the second branch magnetic conveying line 1312 conveys the support 40 carrying the unqualified product to the feeding port of the first processing device 31, so that the battery cell 100 can re-enter the welding process. The first branch magnetic conveying line 1311, the second branch magnetic conveying line 1312, and the second magnetic conveying line 12 between the first branch magnetic conveying line 1311 and the second branch magnetic conveying line 1312 together form the first sub-line 131.

[0085] In the embodiment of the present application, the first sub-line 131 multiplexes the second magnetic drive conveying line 12, which is beneficial to save the equipment occupied space, improve the space utilization, and adapt to the compact layout demand of small and medium-sized workshops.

[0086] In some optional embodiments, referring to Figure 1 , the liquid injection equipment 20 comprises a processing device, and the processing device of the liquid injection equipment 20 is the second processing device 21. The liquid injection equipment 20 comprises a detection device, and the detection device of the liquid injection equipment 20 is the second detection device 22. Along the conveying direction of the first magnetic drive conveying line 11, the second detection device 22 is located downstream of the second processing device 21. The third magnetic drive conveying line 13 comprises a second sub-line 132, the second sub-line 132 is arranged on one side of the first magnetic drive conveying line 11, and the second sub-line 132 is connected to the second processing device 21 and the second detection device 22.

[0087] Optionally, the second processing device 21 can be a liquid injection mechanism.

[0088] Optionally, the second detection device 22 can be a post-weighing mechanism.

[0089] Optionally, the second processing device 21 and the second detection device 22 can be located on the same side of the first magnetic drive conveying line 11, and further, the second sub-line 132 and the second processing device 21 are located on the same side of the first magnetic drive conveying line 11. Of course, the second sub-line 132 and the second processing device 21 are located on different sides of the first magnetic drive conveying line 11. The embodiments of the present application do not limit the arrangement of the second processing device 21, the second detection device 22 and the second sub-line 132, as long as the support 40 carrying the battery monomer 100 with liquid injection unqualified products can be returned to the second processing device 21 from the second detection device 22 via the second sub-line 132. Understandably, the first magnetic drive conveying line 11 and the second sub-line 132 are arranged along the width direction Y of the rack 10.

[0090] The second sub-line 132 is connected to the upstream of the second processing device 21 and the downstream of the second detection device 22, which means that the input end and the output end of the second sub-line 132 are both connected to the first magnetic drive conveying line 11, and the input end of the second sub-line 132 is connected to the unqualified product discharge port of the second detection device 22, and the output end of the second sub-line 132 is connected to the feeding port of the second processing device 21. When the second detection device 22 determines that the battery monomer liquid injection is unqualified, the support 40 carrying the unqualified product is moved from the first magnetic drive conveying line 11 to the second sub-line 132, and the support 40 carrying the unqualified product is reversely driven by the second sub-line 132 to move to the upstream of the second processing device 21, and the first magnetic drive conveying line 11 conveys the support 40 carrying the unqualified product to the feeding port of the first processing device 31, so that the battery monomer 100 can re-enter the liquid injection process.

[0091] In the embodiment of the present application, since the battery monomer 100 has not been sealed after the completion of the liquid injection, the second sub-wire 132 and the first magnetic drive conveying wire 11 are arranged side by side, which is beneficial to maintain the pose of the battery monomer 100, reduce the possibility of electrolyte overflow caused by shaking of the battery monomer 100 that does not meet the liquid injection, reduce the liquid injection time of subsequent secondary liquid injection, and improve the rework efficiency.

[0092] In some optional embodiments, referring to Figure 1 and Figure 3 , the extension shape of the first magnetic drive conveying wire 11 includes one or a combination of linear shape and curved shape.

[0093] Optionally, the curved shape can include S shape, U shape or other shapes.

[0094] It can be understood that the extension shape of the first magnetic drive conveying wire 11 can match the movement track of the support 40 on the first magnetic drive conveying wire 11. The extension shape of the first magnetic drive conveying wire 11 can be the same as the extension shape of the second magnetic drive conveying wire 12, that is, the movement track of the support 40 on the second magnetic drive conveying wire 12 is the extension shape of the first magnetic drive conveying wire 11.

[0095] The embodiment of the present application is beneficial to improve the arrangement range of the rack 10, so that the battery monomer liquid injection system can adapt to different shapes of workshops, and improve the space utilization.

[0096] In some optional embodiments, referring to Figure 2 , the support 40 includes a magnetic part 42, a clamping part 41 and a bearing part 43. The clamping part 41 is used to clamp at least one side of the first magnetic drive conveying wire 11 along the width direction Y of the rack 10. The magnetic part 42 is arranged on the clamping part 41, and the first magnetic drive conveying wire 11 is arranged to be magnetically coupled with the magnetic part 42 to drive the support 40 to move on the first magnetic drive conveying wire 11. The bearing part 43 is connected with the clamping part 41, and the bearing part 43 is used to bear the battery monomer 100.

[0097] Optionally, the clamping part 41 can be used to clamp one side or both sides of the first magnetic drive conveying wire 11 along the width direction Y of the rack 10.

[0098] Optionally, the clamping part 41 can include a first clamping plate, a second clamping plate and a connecting plate connecting the first clamping plate and the second clamping plate. At least part of the first magnetic drive conveying wire 11 is located between the first clamping plate and the second clamping plate, and the first clamping plate is located on the side of the first magnetic drive conveying wire 11 away from the second magnetic drive conveying wire 12, and the second clamping plate is located on the side of the first magnetic drive conveying wire 11 toward the second magnetic drive conveying wire 12. The magnetic part 42 of the support 40 can be arranged on at least one of the first clamping plate, the second clamping plate and the connecting plate.

[0099] Optionally, the magnetic part 42 can include a permanent magnet.

[0100] Optionally, the number of the magnetic part 42 can include one or more.

[0101] Optionally, the bearing part 43 can include a bearing space, and the bearing part 43 can bear one or more battery monomers 100.

[0102] The application can simplify the mutual switching of the bearing part 40 between the first magnetic drive conveying line 11, the second magnetic drive conveying line 12 and the third magnetic drive conveying line 13, and improve the automation degree of the battery monomer liquid injection system.

[0103] In some optional embodiments, referring to Figure 1 The projection of the bearing part 43 along the first direction and in the same plane exceeds the size of the projection of the first side by d, the curvature radius of the curved segment S is R, and d and R satisfy the relationship: 0.02R≤d≤0.2R.

[0104] Exemplarily, the rack 10 includes a plurality of straight segments L and curved segments S connecting adjacent straight segments L, so that the first magnetic drive conveying line 11 has a plurality of first straight segments L and a plurality of first curved segments S, the first straight segments L and the straight segments L of the rack 10 are in a corresponding position, and the first curved segments S and the curved segments S of the rack 10 are in a corresponding position. When the bearing part 40 moves on the first magnetic drive conveying line 11, the bearing part 40 can have a straight line motion and a curve motion. When the rack 10 includes two straight segments L and one curved segment S, the bearing part 40 can pass through the first side; when the rack 10 includes more than two straight segments L and a plurality of curved segments S, the bearing part 40 moves from the first side of one curved segment S (such as the first curved segment S) to the next curved segment S (such as the second curved segment S), and the bearing part 40 will pass through the second side of the second curved segment S. The second side is the side of the curved segment S away from the bending center.

[0105] It can be understood that the bearing part 43 can be clamped on at least one side of the first magnetic drive conveying line 11, and therefore, the bearing part 43 can exceed the edge of the rack 10 along the width direction Y of the rack 10 to increase the bearing space of the bearing part 43. The curvature radius refers to the radius of the curved segment S, that is, the distance from the bending center to the outside (or inside) of the curved segment S.

[0106] Optionally, the projection of the bearing portion 43 towards the side of the bending center beyond the size of the projection of the first side can be 0.02R, 0.03R, 0.05R, 0.06R, 0.1R, 0.15R, 0.2R or other sizes.

[0107] In the embodiments of the present application, the extension shape of the first magnetic driving conveying line 11 is taken as an example of S shape, the straight line segment L includes a first straight line segment and a second straight line segment, and the bending segment S includes a first bending segment connected to the first straight line segment and the second straight line segment. A plurality of mechanisms (such as the aforementioned weighing mechanism, liquid injection mechanism, post-weighing mechanism, upper glue pin mechanism, glue pin pressing mechanism, and mechanical wiping liquid injection hole mechanism) in the liquid injection device can be sequentially distributed on the first straight line segment. A plurality of mechanisms (such as the cleaning mechanism, upper aluminum pin mechanism, laser welding mechanism, and post-welding detection mechanism) in the sealing device can be sequentially distributed on the second straight line segment. Optionally, the straight line segment L further includes a third straight line segment, and the bending segment S further includes a second bending segment connected to the second straight line segment and the third straight line segment. In order to increase the production efficiency, the same mechanism in the sealing device can be arranged multiple times (such as multiple laser welding mechanisms), so that the plurality of mechanisms in the sealing device are sequentially distributed on the second straight line segment and the third straight line segment.

[0108] In the embodiments of the present application, when the support member 40 moves along the bending segment S, the battery monomer 100 has a tendency to fall under the action of centrifugal force. By setting d≥0.2R, the part of the bearing portion 43 protruding to the first side can provide sufficient support force to improve the stability of the support member 40. By setting d≤0.2R, it is beneficial to reduce the possibility of interference between the parts of the adjacent two support members 40 protruding to the first side when the adjacent two support members 40 pass through the first side of the bending segment S at the same time.

[0109] In some optional embodiments, please refer to Figure 2 The bearing portion 43 includes a first wall portion 431 opposite along the length direction X, the first wall portion 431 is configured to be arranged opposite to the large face of the battery monomer 100, and along the length direction X and in the same plane, the projection of the first wall portion 431 at least partially overlaps with the projection of the large face of the battery monomer 100.

[0110] Optionally, when the shape of the battery monomer 100 is a cuboid, the battery monomer 100 has three groups of opposite surfaces, one group of surfaces is larger in area than the other two groups of surfaces, and this group of surfaces is referred to as the large face of the battery monomer 100.

[0111] The first wall portion 431 is a side wall opposite to the bearing portion 43 along the length direction X of the rack 10. When the battery monomer 100 is moved by the bearing member 40, the first wall portion 431 can limit and support the large face of the battery monomer 100, thereby reducing the possibility of the battery monomer 100 falling down during the conveying process. The projection of the first wall portion 431 and the projection of the large face of the battery monomer 100 at least partially overlap, which is beneficial to increase the contact area with the battery monomer 100 and improve the stability of the battery monomer 100 during the conveying process.

[0112] Optionally, along the length direction X and in the same plane, the projection of the first wall portion 431 overlaps the projection of the large face of the battery monomer 100; or, along the length direction X and in the same plane, the projection of the first wall portion 431 falls within the projection of the large face of the battery monomer 100; or, along the length direction X and in the same plane, the projection of the battery monomer 100 falls within the projection of the large face of the first wall portion 431.

[0113] Optionally, the structure of the first wall portion 431 can include a main body portion and a flexible portion. The flexible portion is located on the side of the main body portion facing the bearing space (the space where the battery monomer 100 is placed). The flexible portion is beneficial to reduce the rigid extrusion between the large face of the battery monomer 100 and the main body portion caused by the deformation of the battery monomer 100 during the liquid injection process, thereby reducing the possibility of electrolyte overflow of the battery monomer 100 during the liquid injection process.

[0114] Figure 4 A partial enlarged view of the battery monomer liquid injection system provided by some embodiments of the present application is shown.

[0115] In some optional embodiments, referring to Figure 4 The bearing member 40 is provided with a through hole, and the liquid injection device 20 and the sealing device 30 each include a jacking device 70. The jacking device 70 is arranged on the rack 10 and is used to jack the battery monomer 100 from the bearing member 40 to the processing area of the liquid injection device 20 and / or the sealing device 30 through the through hole.

[0116] Optionally, the bottom of the bearing space of the bearing portion 43 can be provided with a through hole, and the jacking device can extend into the bearing space through the through hole and jack up the battery monomer 100.

[0117] Optionally, the battery monomer liquid injection system can further include a carrying device. When the bearing member 40 moves to the position of the liquid injection device 20 and / or the sealing device 30, the carrying device can carry the bearing member 40 to below the processing area. For example, the carrying device can move the bearing member 40 along the width direction Y of the rack 10 by applying a lateral force to the bearing portion 43 of the bearing member 40.

[0118] Optionally, each mechanism in the liquid injection device can be provided with a lifting device. Each mechanism in the sealing device can be provided with a lifting device.

[0119] In the embodiment, the lifting device 70 is arranged to separate the battery monomer 100 from the support 40, so as to reduce the possibility that the battery monomer 100 interferes with the processing device during the liquid injection process and the sealing process, and facilitate the positioning of the battery monomer 100 and the positioning mechanism 80 in the processing device, and improve the production yield of the battery monomer 100 during the liquid injection process and the sealing process.

[0120] In some optional embodiments, referring to Figure 2 The liquid injection device 20 and the sealing device 30 each further include a positioning mechanism 80 arranged above the corresponding lifting device 70, and used to position the battery monomer 100 lifted by the lifting device 70.

[0121] For example, after the support 40 supports the battery monomer 100 after the liquid injection and flows to the position of the processing device (such as a cleaning mechanism, an aluminum nail mounting mechanism, and a welding mechanism), the lifting device 70 lifts the battery monomer 100 away from the battery monomer 100 and performs reference positioning through the positioning mechanism 80, and then a camera sequentially scans each battery monomer 100 to obtain the liquid injection hole position information of the battery monomer 100. After the liquid injection hole position information is obtained, the liquid injection hole is processed (such as cleaning the liquid injection hole, transporting the aluminum nail to the liquid injection hole, and pre-welding and full-welding the liquid injection hole).

[0122] For example, after the support 40 supports the battery monomer 100 after the liquid injection and flows to the position of the detection device (such as a post-welding detection mechanism), the lifting device 70 lifts the battery monomer 100 away from the battery monomer 100 and performs reference positioning through the positioning mechanism 80 in the detection device, and then a camera sequentially scans each battery monomer 100 to obtain image information of the battery monomer 100, and judges the visual defects of the battery monomer 100 according to the image information.

[0123] Optionally, each mechanism in the liquid injection device can be provided with a positioning mechanism. Each mechanism in the sealing device can be provided with a positioning mechanism.

[0124] In the embodiment, the positioning mechanism 80 is arranged to improve the position accuracy of the battery monomer 100 during the production process, and reduce the possibility of liquid leakage and unqualified welding sealing caused by position deviation during the production process.

[0125] According to some embodiments of the present application, the present application provides a battery production line, including the battery monomer liquid injection system provided in any of the above embodiments.

[0126] Optionally, the battery production line can further include a battery monomer formation system, which completes a formation process of the battery monomer 100 by liquid injection, packaging, and charging and discharging circulation of the battery monomer 100. It can be understood that in the formation process of the battery monomer 100, the electrolyte inside the battery monomer 100 will be consumed, and the packaging of the liquid injection hole needs to be removed, and then the battery monomer 100 is injected and sealed by the battery monomer injection system.

[0127] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described.

[0128] Please refer to Figures 1 to 4 The battery monomer injection system provided by the embodiments of the present application includes a rack 10, a liquid injection device 20, a sealing device 30, a supporting piece 40, a feeding station 50, and a discharging station 60. The rack 10 has a first magnetic drive conveying line 11 extending along the length direction X of the rack 10. The liquid injection device 20 is arranged on one side of the first magnetic drive conveying line 11 and is used for injecting liquid into the shell of the battery monomer 100. The sealing device 30 is arranged on one side of the first magnetic drive conveying line 11 and is located downstream of the liquid injection device 20. The sealing device 30 is used for sealing the liquid injection hole of the shell after the liquid injection is completed. The supporting piece 40 is used for supporting the battery monomer 100 to be processed. Along the length direction X of the rack 10, the first magnetic drive conveying line 11 is arranged between the feeding station 50 and the discharging station 60. The first magnetic drive conveying line 11 is arranged to magnetically drive the supporting piece 40 to move on the first magnetic drive conveying line 11, so that the supporting piece 40 drives the battery monomer 100 to pass through the liquid injection device 20 and the sealing device 30 in sequence from the feeding station 50 and moves to the discharging station 60.

[0129] The rack 10 further has a second magnetic drive conveying line 12 extending along the length direction X of the rack 10. The first magnetic drive conveying line 11 is arranged on the upper side of the second magnetic drive conveying line 12 at intervals. Along the length direction X of the rack 10, the second magnetic drive conveying line 12 is arranged between the feeding station 50 and the discharging station 60. The second magnetic drive conveying line 12 is arranged to magnetically drive the supporting piece 40 to move on the second magnetic drive conveying line 12, so that the supporting piece 40 flows back to the feeding station 50 from the discharging station 60.

[0130] At least one of the liquid injection device 20 and the sealing device 30 comprises a processing device and a detection device, and the detection device is arranged downstream of the processing device in the conveying direction of the first magnetic driving conveying line. The rack 10 further comprises a third magnetic driving conveying line 13, and the third magnetic driving conveying line 13 is arranged to drive the support 40 to move on the third magnetic driving conveying line 13, so that the support 40 drives the battery cell 100 to flow back to the processing device from the detection device. The sealing device 30 comprises a processing device, and the processing device of the sealing device 30 is the first processing device 31. The sealing device 30 comprises a detection device, and the detection device of the sealing device 30 is the first detection device 32. In the conveying direction of the first magnetic driving conveying line, the first detection device is located downstream of the first processing device. The third magnetic driving conveying line 13 comprises a first sub-line 131, and the third magnetic driving conveying line 13 is located between the first processing device 31 and the first detection device 32. The first sub-line 131 comprises a second magnetic driving conveying line located between the first processing device 31 and the first detection device 32. The liquid injection device 20 comprises a processing device, and the processing device of the liquid injection device 20 is the second processing device 21. The liquid injection device 20 comprises a detection device, and the detection device of the liquid injection device 20 is the second detection device 22. In the conveying direction of the first magnetic driving conveying line 11, the second detection device 22 is located downstream of the second processing device 21. The third magnetic driving conveying line 13 comprises a second sub-line 132, and the second sub-line 132 is arranged on one side of the first magnetic driving conveying line 11. The second sub-line 132 is connected to the second processing device 21 and the second detection device 22.

[0131] The extension shape of the first magnetic driving conveying line 11 comprises one or more combinations of straight lines and curves.

[0132] The support 40 is provided with a through hole. The liquid injection device 20 and the sealing device 30 each comprise a jacking device 70 arranged on the rack 10. The jacking device 70 is used to jack the battery cell 100 from the support 40 to a processing area of the liquid injection device 20 and / or the sealing device 30 through the through hole. The liquid injection device 20 and the sealing device 30 each further comprise a positioning mechanism 80 arranged above the corresponding jacking device 70. The positioning mechanism 80 is used to position the position of the battery cell 100 jacked by the jacking device 70.

[0133] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0134] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery cell liquid injection system, characterized by, The application relates to a battery cell production line. The rack has a first magnetic drive conveying line extending along the length direction of the rack. A liquid injection device is arranged on one side of the first magnetic drive conveying line and used for injecting liquid into the shell of a battery cell. A sealing device is arranged on one side of the first magnetic drive conveying line and located downstream of the liquid injection device, and is used for sealing the liquid injection hole of the shell after liquid injection. A supporting member is used for supporting the battery cell. An upper loading station and a lower loading station are arranged along the length direction of the rack, and the first magnetic drive conveying line is arranged between the upper loading station and the lower loading station.

2. The battery cell liquid injection system according to claim 1, wherein The first magnetic drive conveying line is arranged to magnetically drive the supporting member to move on the first magnetic drive conveying line, so that the supporting member drives the battery cell to pass through the liquid injection device and the sealing device from the upper loading station to the lower loading station. The rack also has a second magnetic drive conveying line extending along the length direction of the rack, and the first magnetic drive conveying line is arranged on the upper side of the second magnetic drive conveying line along the length direction of the rack.

3. The battery cell liquid injection system of claim 2, wherein The second magnetic drive conveying line is arranged to magnetically drive the supporting member to move on the second magnetic drive conveying line, so that the supporting member flows back from the lower loading station to the upper loading station. At least one of the liquid injection device and the sealing device comprises a processing device and a detection device, and the detection device is arranged downstream of the processing device along the conveying direction of the first magnetic drive conveying line.

4. The battery cell liquid injection system according to claim 3, wherein The rack also has a third magnetic drive conveying line between the processing device and the detection device, and the third magnetic drive conveying line is arranged to magnetically drive the supporting member to move on the third magnetic drive conveying line, so that the supporting member drives the battery cell to flow back from the detection device to the processing device. The sealing device comprises the processing device, and the processing device of the sealing device is a first processing device.

5. The battery cell liquid injection system of claim 3, wherein The sealing device comprises the detection device, and the detection device of the sealing device is a first detection device. The third magnetic drive conveying line comprises a first sub-line, and the first sub-line comprises the part of the second magnetic drive conveying line between the first processing device and the first detection device. The liquid injection device comprises the processing device, and the processing device of the liquid injection device is a second processing device. The liquid injection device comprises the detection device, and the detection device of the liquid injection device is a second detection device. The third magnetic drive conveying line comprises a second sub-line arranged on one side of the first magnetic drive conveying line, and the second sub-line is connected between the second processing device and the second detection device.

6. The battery cell liquid injection system according to any one of claims 1 to 5, characterized by, The extension shape of the first magnetic driving conveying line comprises one or more combinations of straight line shape and curved line shape.

7. The battery cell liquid injection system according to any one of claims 1 to 5, characterized by, The support member comprises: a clamping portion configured to clamp at least one side of the first magnetic driving conveying line along a width direction of the rack; a magnetic portion disposed on the clamping portion, the first magnetic driving conveying line being configured to magnetically couple with the magnetic portion to drive the support member to move along the first magnetic driving conveying line; a bearing portion connected to the clamping portion, the bearing portion being configured to bear the battery cell.

8. The battery cell liquid injection system of claim 7, wherein The rack comprises a plurality of straight line segments and curved segments connecting adjacent straight line segments, the curved segment comprising a first side facing a bending center along the width direction; in the same plane along the first direction, a projection of the bearing portion towards the side facing the bending center exceeds a size of a projection of the first side by d, a radius of curvature of the curved segment is R, and the d and the R satisfy a relationship of 0.02R≤d≤0.2R.

9. The battery cell liquid injection system of claim 7, wherein The bearing portion comprises a first wall portion opposite along the length direction, the first wall portion being configured to be disposed opposite to a large face of the battery cell, and in the same plane along the length direction, a projection of the first wall portion at least partially overlaps with a projection of the large face of the battery cell.

10. The battery cell liquid injection system according to any one of claims 1 to 5, wherein The support member is provided with a through hole, the liquid injection device and the sealing device each comprise a jacking device, the jacking device is disposed on the rack, and the jacking device is configured to jack the battery cell from the support member to a processing area of the liquid injection device and / or the sealing device through the through hole.

11. The battery cell liquid injection system of claim 10, wherein The liquid injection device and the sealing device each further comprise a positioning mechanism disposed above the corresponding jacking device, the positioning mechanism being configured to position the battery cell jacked by the jacking device.

12. A battery production line, characterized by The battery cell liquid injection system comprises: The battery cell liquid injection system according to any one of claims 1 to 11.

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