Secondary formation system for batteries and secondary formation method for batteries

Abstract

Disclosed in the present application are a secondary formation system for batteries and a secondary formation method for batteries. The secondary formation system for batteries comprises at least: a conveying mechanism, a first transfer mechanism, a formation device, a second transfer mechanism and a sorting mechanism, wherein the conveying mechanism is configured to convey a carrying device, and the carrying device is configured for placement of a plurality of batteries; the formation device and the sorting mechanism are arranged in sequence along the conveying mechanism; and the first transfer mechanism is configured to transfer the carrying device between the conveying mechanism and the formation device, and the second transfer mechanism is configured to transfer the carrying device between the conveying mechanism and the sorting mechanism. By applying the present application, provided are a system and method for performing secondary formation on batteries, which can automatically complete first formation of the batteries and select failed batteries for secondary formation, thereby further improving the formation efficiency of the batteries. Moreover, by means of the cooperative use of dummy batteries, the problem of a formation process timing-out is avoided, thereby ensuring the quality of battery products.

Description

A battery secondary formation system and a battery secondary formation method

[0001] This application claims priority to Chinese invention patent application number "202411033495.8", application date "July 30, 2024", entitled "A battery secondary formation system and a battery secondary formation method". Technical Field

[0002] This application relates to the field of battery manufacturing technology, and in particular to a battery secondary formation system and a battery secondary formation method. Background Technology

[0003] Formation is a crucial step in the lithium battery production process. Batteries are typically placed in trays and fed into the formation equipment in batches for formation. After formation, the batteries are usually tested. Qualified batteries can then proceed to the secondary electrolyte injection process with the production line, while unqualified batteries are selected and placed back into the formation equipment for a second formation process.

[0004] However, existing formation equipment often struggles to automate the transition between primary and secondary formation of batteries. Manual intervention is generally required to select out defective batteries from the primary formation process and reinsert them into the formation equipment. Furthermore, during secondary formation, it is often necessary to wait for a sufficient number of defective batteries to be loaded into other trays, which can easily lead to process timeouts. This directly impacts the efficiency of secondary formation and the quality of the product. Summary of the Invention

[0005] In view of this, in order to solve the above problems, the purpose of this application is to provide a battery secondary formation system, including: a conveying mechanism, a first transfer mechanism, a formation device, a second transfer mechanism, and a sorting mechanism;

[0006] The conveying mechanism is used to convey the carrying device, which is used to hold several batteries;

[0007] The chemical formation device and the sorting mechanism are arranged sequentially along the conveying mechanism;

[0008] The first transfer mechanism is used for transferring the carrying device between the conveying mechanism and the formation device; the second transfer mechanism is used for transferring the carrying device between the conveying mechanism and the sorting mechanism.

[0009] The sorting mechanism is used to transfer defective batteries from one carrier device to another carrier device, wherein the batteries on the carrier device have at least been processed by the formation device.

[0010] In some embodiments, the conveying mechanism includes at least: a first conveying section and a second conveying section, wherein the conveying directions of the first conveying section and the second conveying section are opposite, the first conveying section is used at least to convey one of the carrier devices, and the second conveying section is used at least to convey the other carrier device.

[0011] In some embodiments, the sorting mechanism includes a first positioning part, a second positioning part, and a sorting transfer mechanism. The first positioning part is used to place one of the carrier devices, the second positioning part is used to place the other carrier device, and the sorting transfer mechanism is used at least for transferring the battery between the first positioning part and the second positioning part.

[0012] In some embodiments, the battery secondary formation system further includes a quantity detection device for detecting the number of batteries contained in the carrier device on the second positioning part.

[0013] In some embodiments, the battery secondary formation system further includes: a dummy battery supply device for providing at least one dummy battery, and the sorting and transfer mechanism for transferring the dummy battery.

[0014] In some embodiments, the battery secondary formation system further includes two lifting and transferring mechanisms, which are respectively disposed at both ends of the conveying mechanism, with the upper and lower ends of each lifting and transferring mechanism respectively disposed close to the first conveying section and the second conveying section.

[0015] In some embodiments, the battery secondary formation system further includes a third transfer mechanism and a high-temperature chamber, wherein the high-temperature chamber, the formation device, and the sorting mechanism are arranged sequentially along the conveying mechanism, and the third transfer mechanism is used for transferring the carrying device between the conveying mechanism and the high-temperature chamber.

[0016] In some embodiments, the battery secondary formation system further includes a feeding mechanism and a discharging mechanism, wherein the feeding mechanism and the discharging mechanism are respectively disposed near both ends of the conveying mechanism.

[0017] The purpose of this application is also to provide a battery re-formation method, including:

[0018] A formation device is used to perform formation operations on batteries. The formation device has a preset battery quantity requirement. When the number of batteries entering the formation device meets the battery quantity requirement, the formation device is in an enableable state.

[0019] The method includes:

[0020] Step S1: Perform the first formation operation on a number of batteries in the first batch using the formation device;

[0021] Step S2: The batteries that failed the first formation operation are placed into the second batch;

[0022] Step S3: Once the number of batteries in the second batch meets the battery quantity requirement, a second formation operation is performed on a number of batteries in the second batch using the formation device.

[0023] In some embodiments, the battery re-formation method further includes:

[0024] A timer, wherein the timer is preset with a time threshold;

[0025] In step S3, when the first battery of the second batch is inserted, the timer starts timing;

[0026] When the timer exceeds the time threshold and the second batch of batteries still does not meet the battery quantity requirement, dummy batteries are grabbed and placed into the second batch until the sum of the number of batteries in the second batch and the number of dummy batteries meets the battery quantity requirement.

[0027] The advantages of this application compared to existing technologies due to the adoption of the above-mentioned technical solution are as follows:

[0028] By applying this application, a system and method suitable for secondary formation of batteries are provided. This system can automatically complete the initial formation of batteries and select unqualified batteries for secondary formation, thereby further improving the formation efficiency of batteries. Furthermore, by using dummy batteries in conjunction, the problem of formation process timeout is avoided. The system of this application is easy to install and maintain, has low operating costs, improves the efficiency of the entire battery production line, reduces manpower waste, and ensures the quality of battery products. Attached Figure Description

[0029] Figure 1 is an overall schematic diagram of a battery secondary formation system according to this application;

[0030] Figure 2 is a schematic diagram of the primary formation battery path of a secondary formation system of the present application.

[0031] Figure 3 is a schematic diagram of the secondary formation battery path of a battery secondary formation system according to this application;

[0032] Figure 4 is a schematic diagram of the no-load path of the carrier device of a battery secondary formation system according to this application.

[0033] In the attached diagram: 1. Conveying mechanism; 2. First transfer mechanism; 3. Formation device; 4. Second transfer mechanism; 5. Sorting mechanism; 6. First conveying section; 7. Second conveying section; 8. First part; 9. Second part; 10. Third part; 11. Third transfer device; 12. Fourth transfer device; 13. Lifting and transferring mechanism; 14. First positioning section; 15. Second positioning section; 16. Sorting and transferring mechanism; 17. Waste discharge device; 18. Dummy battery supply device; 19. Third transfer mechanism; 20. High-temperature storage; 21. First transfer assembly; 22. Second transfer assembly; 23. Third transfer assembly; 24. Fourth transfer assembly; 25. Fifth transfer device; 26. Third conveying section; 27. 1. Warehouse receiving machine; 28. Stacker crane; 29. ​​Sixth transfer device; 30. Feeding mechanism; 31. Unloading mechanism; 32. Primary liquid injection unloading device; 33. First robotic arm; 34. First lifting and positioning device; 35. First transfer device; 36. Secondary liquid injection feeding device; 37. Second robotic arm; 38. Second lifting and positioning device; 39. Second transfer device; 40. First identification component; 41. Second identification component; 42. Third identification component; 43. Fourth identification component; 44. Fifth identification component; 45. Stopping device; 46. Fourth conveying unit. Detailed Implementation

[0034] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "lateral", and "vertical" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this application, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] Figure 1 illustrates a battery secondary formation system according to an embodiment, comprising: a conveying mechanism 1, a first transfer mechanism 2, a formation device 3, a second transfer mechanism 4, and a sorting mechanism 5; the conveying mechanism 1 is used to convey a carrier device, which is used to hold a plurality of batteries; the formation device 3 and the sorting mechanism 5 are arranged sequentially along the conveying mechanism 1; the first transfer mechanism 2 is used for transferring the carrier device between the conveying mechanism 1 and the formation device 3, and the second transfer mechanism 4 is used for transferring the carrier device between the conveying mechanism 1 and the sorting mechanism 5; wherein, the sorting mechanism 5 is used to transfer unqualified batteries from one carrier device to another carrier device, the batteries on the first carrier device having at least been processed by the formation device 3, and the other carrier device is used to move a rod into the formation device 3 for secondary formation. In some embodiments, the carrier device carrying several batteries can be moved in the desired direction under the drive of the conveying mechanism 1. The several batteries on each carrier device can be regarded as a group of batteries. In some embodiments, after the batteries have been pretreated by the high-temperature chamber 20, etc., the carrier device moves towards the formation device 3, and the batteries are sent into the formation device 3 by the first transfer mechanism 2. The formation device 3 performs formation work on the group of batteries. After the formation work is completed, the detection information of the corresponding batteries is obtained to determine whether the batteries are qualified, and the group of batteries is continued to be conveyed to a position near the sorting mechanism 5. The second transfer mechanism 2 then... The transfer mechanism 4 delivers the group of batteries to the designated workstation, sorts out the unqualified batteries, and places them on another carrier device for storage. When the other carrier device is full of unqualified batteries, it returns to the conveying mechanism 1 via the second transfer mechanism 4 and is transported in reverse to the formation device 3 for secondary formation. Then, the corresponding testing work is repeated to judge the batteries again. After moving to the sorting mechanism 5, the batteries on the other carrier device are sorted. The unqualified batteries are taken out and placed on the waste discharge device 17 for discharge. The other carrier device, after the unqualified batteries have been removed, is transported to the subsequent process.

[0037] In some embodiments, the battery secondary formation system further includes a detection module, which may be disposed at the formation device 3, the sorting mechanism 5, or the conveying mechanism 1. The detection module is used to perform corresponding tests on the battery to obtain information about the battery after the formation process, and then determine whether the battery is qualified.

[0038] In some embodiments, the carrier is a battery tray, which has mounting positions corresponding to a standard number of batteries required for a certain number of batteries, and each mounting position can be removably placed with a battery.

[0039] In some embodiments, the conveying mechanism 1 includes a first conveying section 6 and a second conveying section 7, wherein the conveying directions of the first conveying section 6 and the second conveying section 7 are opposite to those of the second conveying section 7. The first conveying section 6 is used at least to convey one carrying device, and the second conveying section 7 is used at least to convey the other carrying device. In some embodiments, the first conveying section 6 is used for the first formation of the carrying device; the second conveying section 7 is used for the second formation of the other carrying device, and for the return movement of the corresponding carrying device after the first or second formation.

[0040] In some embodiments, the first conveying section 6 and the second conveying section 7 are both arranged as conveying lines; a single-layer conveying section may also be used, and the above-mentioned primary formation and secondary formation can be achieved through its reciprocating movement.

[0041] In some embodiments, the first conveying section 6 and the second conveying section 7 each include: a first part 8, a second part 9 and a third part 10, the first part 8, the second part 9 and the third part 10 being arranged in sequence, the first part 8 and the second part 9 being arranged perpendicularly, the second part 9 and the third part 10 being arranged perpendicularly; the first part 8, the second part 9 and the third part 10 are arranged in a U-shape.

[0042] In some embodiments, the formation apparatus 3 and the high-temperature chamber 20 are disposed between the first part 8 and the third part 10.

[0043] In some embodiments, a third transfer device 11 is provided at the connection between the first part 8 and the second part 9, and the third transfer device 11 is used to support the turning movement of the device between the first part 8 and the second part 9.

[0044] In some embodiments, a fourth transfer device 12 is provided at the connection between the second part 9 and the third part 10, and the fourth transfer device 12 is used to carry the device to rotate between the third part 10 and the second part 9.

[0045] In some embodiments, the first conveying section 6 is disposed above or below the second conveying section 7. In some embodiments, one of the first conveying section 6 and the second conveying section 7 is the upper part of the conveying mechanism 1, and the other is the lower part of the conveying mechanism 1.

[0046] In some embodiments, the battery secondary formation system further includes two lifting and transferring mechanisms 13, which are respectively disposed at both ends of the conveying mechanism 1. The upper and lower ends of each lifting and transferring mechanism 13 are respectively disposed close to the first conveying section 6 and the second conveying section 7. In some embodiments, the lifting and transferring mechanism 13 is used to support the movement of the device between the first conveying section 6 and the second conveying section 7, so that the conveying mechanism 1 of this application can form a circulating conveying system.

[0047] In some embodiments, the lifting and transfer mechanism 13 is an inter-floor elevator.

[0048] In some embodiments, the sorting mechanism 5 includes a first positioning part 14, a second positioning part 15, and a sorting and transfer mechanism 16. The first positioning part 14 is used to place the carrier device, the second positioning part 15 is used to place the other carrier device, and the sorting and transfer mechanism 16 is used at least for transferring the battery between the first positioning part 14 and the second positioning part 15.

[0049] In some embodiments, the sorting and transfer mechanism 16 is a robotic arm.

[0050] In some embodiments, the first positioning part 14 and the second positioning part 15 are both lifting positioning platforms, on which a workstation for supporting the bearing device is formed.

[0051] In some embodiments, the aforementioned support device and the other support device are not limited to having only the two support devices. The battery secondary formation system can operate with multiple support devices at the same time. The corresponding high-temperature chamber 20 and formation device 3 can process multiple support devices at the same time. The support devices that have undergone one or two formations can be selectively placed on the corresponding first positioning part 14 and second positioning part 15 as needed.

[0052] In some embodiments, the sorting mechanism 5 further includes a waste discharge device 17, which in some embodiments is disposed on the side of the first positioning part 14 and the second positioning part 15 away from the conveying mechanism 1. In some embodiments, the waste discharge device 17 is used to discharge batteries that are still unqualified after secondary formation. Specifically, the sorting mechanism 5 can transfer batteries on the carrier device that have undergone secondary formation on the first positioning part 14 or the second positioning part 15.

[0053] In some embodiments, the waste discharge device 17 is a waste discharge conveyor belt, and a waste storage device may be provided at the end of the waste discharge conveyor belt for temporary storage of defective batteries.

[0054] In some embodiments, the waste discharge device 17 is equipped with an alarm device for detecting whether the waste storage container is full. In some embodiments, when the waste storage container is full, the alarm device is automatically triggered to remind staff to clean it.

[0055] In some embodiments, the battery secondary formation system further includes a quantity detection device for detecting the number of batteries housed in the carrier on the second positioning part 15. In some embodiments, the quantity detection device may be a vision camera or sensing device disposed at the sorting mechanism 5.

[0056] In some embodiments, the battery secondary formation system further includes: a dummy battery supply device 18 for providing at least one dummy battery, and a sorting and transfer mechanism 16 for transferring the dummy battery. In some embodiments, the dummy battery has the same three-dimensional dimensions as a normal battery, but it cannot undergo the corresponding formation process for charging and discharging, but can meet the working requirements of the formation device 3, specifically, having a standard number of batteries on the carrier device that meets the battery quantity requirement.

[0057] In some embodiments, the dummy battery supply device 18 is a platform on which multiple dummy batteries are placed.

[0058] In some embodiments, the battery secondary formation system further includes a third transfer mechanism 19 and a high-temperature chamber 20. The high-temperature chamber 20, the formation device 3, and the sorting mechanism 5 are arranged sequentially along the conveying mechanism 1. The third transfer mechanism 19 is used to transfer the device between the conveying mechanism 1 and the high-temperature chamber 20. In some embodiments, the high-temperature chamber 20 is used to perform high-temperature treatment on the battery to meet the process time and process temperature requirements.

[0059] In some embodiments, the first transfer mechanism 2 includes a first transfer component 21 and a second transfer component 22, the formation apparatus 3 has a first inlet and a first outlet, the first transfer component 21 is disposed near the first inlet, and the second transfer component 22 is disposed near the first outlet.

[0060] In some embodiments, the third transfer mechanism 19 includes a third transfer component 23 and a fourth transfer component 24. The high-temperature chamber 20 has a second inlet and a second outlet. The third transfer component 23 is disposed near the second inlet, and the fourth transfer component 24 is disposed near the second outlet.

[0061] In some embodiments, the first transfer assembly 21, the second transfer assembly 22, the third transfer assembly 23, and the fourth transfer assembly 24 each include a fifth transfer device 25, a third conveying section 26, and an inbound machine 27. The fifth transfer device 25, the third conveying section 26, and the inbound machine 27 are arranged sequentially in a direction away from the conveying mechanism 1. In some embodiments, the fifth transfer device 25 is located at the conveying mechanism 1 and is used to transfer the carrying device between the third conveying section 26 and the conveying mechanism 1.

[0062] In some embodiments, the battery secondary formation system further includes two stacker cranes 28, one stacker crane 28 being disposed between the first transfer assembly 21 and the second transfer assembly 22, and the other stacker crane 28 being disposed between the third transfer assembly 23 and the fourth transfer assembly 24. In some embodiments, the stacker crane 28 is used to transfer the carrying device between the receiving machine 27 and the high-temperature chamber 20 or the formation device 3.

[0063] In some embodiments, the second transfer mechanism 4 includes two sixth transfer devices 29, which are disposed close to the conveying mechanism 1 and are used to transfer the carrier between the conveying mechanism 1 and the corresponding first positioning part 14 or second positioning part 15.

[0064] In some embodiments, a corresponding fourth conveying part 46 is provided between the sixth transfer device 29 and the first positioning part 14, and between the sixth transfer device 29 and the second positioning part 15.

[0065] In some embodiments, the third conveying section 26 and the fourth conveying section 46 may include an upper layer and a lower layer. The third conveying section 26 and the fourth conveying section 46 may also be a single layer and configured with a corresponding lifting and transfer mechanism.

[0066] In some embodiments, the battery secondary formation system further includes a feeding mechanism 30 and a discharging mechanism 31, which are respectively disposed near the two ends of the conveying mechanism 1.

[0067] In some embodiments, the feeding mechanism 30 includes: a primary liquid injection and unloading device 32, a first robotic arm 33, a first lifting and positioning device 34, and a first transfer device 35. The primary liquid injection and unloading device 32 is used to provide batteries that have completed the first liquid injection. The first robotic arm 33 is used to transfer the batteries that have completed the first liquid injection to an empty carrier on the first lifting and positioning device 34. The first transfer device 35 is used to transport the filled carrier to the conveying mechanism 1.

[0068] In some embodiments, the unloading mechanism 31 includes: a secondary liquid injection and loading device 36, a second robotic arm 37, a second lifting and positioning device 38, and a second transfer device 39. The secondary liquid injection and loading device 36 is used to receive the formed battery and perform secondary liquid injection to send it to the next process. The second robotic arm 37 is used to transfer the formed battery to the second liquid injection and loading device. The second transfer device 39 is used to transfer the carrier to the second lifting and positioning device 38 so that the second robotic arm 37 can grasp it.

[0069] In some embodiments, the battery secondary formation system further includes: a first identification component 40, a second identification component 41, a third identification component 42, a fourth identification component 43, and a fifth identification component 44. All four components are used to identify the carrier device. Specifically, the first identification component 40 is located at the first transfer device 35, the second identification component 41 is located near the high-temperature chamber 20 at the receiving machine 27, the third identification component 42 is located near the formation device 3 at the receiving machine 27, the fourth identification component 43 is located at the first positioning part 14 and the second positioning part 15, and the fifth identification component 44 is located at the second transfer device 39. In some embodiments, each carrier device is provided with an identification module, which in some embodiments is an identification code, etc., so that it can be identified by the corresponding identification component, thereby accurately determining the process in which the corresponding carrier device is located.

[0070] In some embodiments, both the first identification component 40 and the fifth identification component 44 include at least one scanning device, which is positioned opposite the first transfer device 35 or the second transfer device 39.

[0071] In some embodiments, the second identification component 41, the third identification component 42, and the fourth identification component 43 each include at least two scanning devices. In some embodiments, the two scanning devices of the second identification component 41 are respectively disposed at the inlet and outlet of the high-temperature chamber 20, the two scanning devices of the third identification component 42 are respectively disposed at the inlet and outlet of the formation device 3, and the two scanning devices of the fourth identification component 43 are respectively disposed at the first positioning part 14 and the second positioning part 15.

[0072] In some embodiments, the scanning device described above is a barcode scanner.

[0073] In some embodiments, the battery secondary formation system further includes: a plurality of stop devices 45, which are disposed on the conveying mechanism 1 and are used at the corresponding positions where the carrier device needs to be stopped. In some embodiments, they may be disposed at the positions where the conveying mechanism 1 is connected to the first transfer mechanism 2, the second transfer mechanism 4 and the third transfer mechanism 19, and at the positions where the conveying mechanism 1 is close to the first transfer device 35 and the second transfer device 39.

[0074] The above descriptions are merely some embodiments of this application and do not limit the implementation methods and protection scope of this application.

[0075] In addition to the above, this application also has the following implementation methods:

[0076] A battery secondary formation method includes: a formation apparatus 3, used to perform formation operations on batteries. The formation apparatus 3 has a preset battery quantity requirement. When the number of batteries entering the formation apparatus 3 meets the battery quantity requirement, the formation apparatus 3 is in an enableable state. The method includes: step S1, performing a first formation operation on a batch of batteries using the formation apparatus 3; step S2, placing batteries that fail the first formation operation into a second batch; and step S3, when the number of batteries in the second batch meets the battery quantity requirement, performing a second formation operation on a batch of batteries in the second batch using the formation apparatus 3. In some embodiments, the second batch of batteries may consist of multiple defective portions from the first batch of batteries. That is, even when not fully loaded, multiple first batches of batteries can be continuously formed to obtain a sufficient number of defective batteries to meet the battery quantity requirement of a second batch.

[0077] In a further embodiment of this application, the battery secondary formation method further includes: a timer, the timer having a preset time threshold; in step S3, when the first battery of the second batch is placed, the timer starts timing; when the timer's timing exceeds the time threshold, and the batteries of the second batch still do not meet the battery quantity requirement, dummy batteries are grabbed and placed into the second batch until the sum of the number of batteries in the second batch and the number of dummy batteries meets the battery quantity requirement. In some embodiments, by coordinating the timer, it is ensured that the batteries waiting for secondary formation will not exceed the process limit time and fail, that is, within the process limit time, i.e., the time threshold, the number of batteries in a group containing dummy batteries on the carrier device meets the above-mentioned battery quantity requirement, so as to enter the formation device 3 for formation processing on time.

[0078] Figure 2 illustrates the movement path of the battery during primary formation. Specifically, the first robotic arm 33 picks up the battery from the primary liquid injection and unloading device 32 and places it onto an empty carrier device pre-positioned on the second lifting and positioning device 38. After the carrier device is filled, the first transfer device 35 transports the battery along with the carrier device to the upper layer of the conveying mechanism 1. Next, the carrier device moves along the first section 8 and, after being turned by the third transfer device 11, enters the second section 9. When it reaches a position close to the high-temperature chamber 20, it is stopped by the blocking device 45 and enters the high-temperature chamber 20 through the third transfer component 23 until the process time is met. Then, the fourth transfer component 24 allows the carrier device to... The carrier is moved back to the second part 9; when the carrier reaches the formation device 3, it enters the formation device 3 through the first transfer component 21 for formation. After the formation is completed, it returns to the second part 9 through the second transfer component 22. Then it continues to run along the second part 9 to a position close to the sorting mechanism 5. The carrier is sent into the sorting mechanism 5 through the second transfer mechanism 4. After reaching the first positioning part 14, the unqualified batteries are taken out by the sorting transfer mechanism 16 and placed on another empty carrier on the second positioning part 15. Then the carrier after removing the unqualified batteries is transported to the third part 10, and the qualified batteries are picked up by the second robot arm 37 and placed on the secondary liquid injection feeding device 36.

[0079] Figure 3 shows the movement path of the battery during secondary formation. Specifically, after the number of batteries on the other carrier device is fully loaded, the fully loaded carrier device can be directly transported to the lower layer of the conveying mechanism 1 and transported in the opposite direction to the formation device 3 along the second part 9; or if it is not full within the time threshold, the sorting and transfer mechanism 16 immediately grabs the dummy battery and places it into the other carrier device so that it can be fully loaded; after entering the formation device 3, the secondary formation operation is carried out. After the secondary formation is completed, it returns to the sorting mechanism 5 through the upper layer of the second part 9 for sorting. Batteries that are still unqualified after the secondary formation are sorted to the waste discharge device 17. The remaining batteries move from the upper layer of the conveying mechanism 1 to the third part 10 along with the other carrier device and are grabbed by the second robot arm 37 and placed on the secondary liquid injection and feeding device 36.

[0080] As shown in Figure 4, the return path of the unloaded carrier is illustrated. Specifically, the unloaded carrier that has completed battery grabbing at the unloading mechanism 31 is continued to be conveyed along the upper layer of the third section 10, and then conveyed to the lower layer after reaching the lifting and transfer mechanism 13 at the third section 10. It is then conveyed along the conveying mechanism 1 to the position of the first section 8, and then conveyed back to the upper layer at the lifting and transfer mechanism 13 at the first section 8. In some embodiments, it moves to the first lifting and positioning device 34 to wait for the next round of work.

[0081] The above descriptions are merely some embodiments of this application and do not limit the implementation methods and protection scope of this application. Those skilled in the art should realize that any equivalent substitutions and obvious changes made using the description and illustrations of this application should be included within the protection scope of this application.

Claims

1. A battery secondary formation system, characterized in that, The battery secondary formation system comprises a conveying mechanism, a first transfer mechanism, a formation device, a second transfer mechanism and a sorting mechanism. The conveying mechanism is used for conveying a carrier device, and the carrier device is used for placing a plurality of batteries. The formation device and the sorting mechanism are sequentially arranged along the conveying mechanism. The first transfer mechanism is used for transferring the carrier device between the conveying mechanism and the formation device, and the second transfer mechanism is used for transferring the carrier device between the conveying mechanism and the sorting mechanism. The sorting mechanism is used for transferring unqualified batteries on one carrier device to another carrier device, and the batteries on the one carrier device have at least been processed by the formation device. The conveying mechanism comprises at least a first conveying part and a second conveying part, the conveying direction of the first conveying part and the conveying direction of the second conveying part are oppositely arranged, the first conveying part is used for conveying at least the one carrier device, and the second conveying part is used for conveying at least the other carrier device. The sorting mechanism comprises a first positioning part, a second positioning part and a sorting transfer mechanism, the first positioning part is used for placing the one carrier device, the second positioning part is used for placing the other carrier device, and the sorting transfer mechanism is used for transferring batteries between the first positioning part and the second positioning part.

2. The battery secondary formation system according to claim 1, wherein The battery secondary formation system further comprises a quantity detection device, which is used for detecting the number of batteries accommodated by the carrier device on the second positioning part.

3. The battery secondary formation system according to claim 2, wherein The battery secondary formation system further comprises a fake battery supply device, which is used for providing at least one fake battery, and the sorting transfer mechanism is further used for transferring the fake battery.

4. The battery secondary formation system according to claim 3, wherein The battery secondary formation system further comprises two lifting transfer mechanisms, which are respectively arranged at two ends of the conveying mechanism, and the upper end and the lower end of each lifting transfer mechanism are respectively arranged close to the first conveying part and the second conveying part.

5. The battery secondary formation system according to claim 1, wherein The battery secondary formation system further comprises a third transfer mechanism and a high-temperature warehouse, the high-temperature warehouse, the formation device and the sorting mechanism are sequentially arranged along the conveying mechanism, and the third transfer mechanism is used for transferring the carrier device between the conveying mechanism and the high-temperature warehouse.

6. The battery secondary formation system according to claim 1, wherein The battery secondary formation system further comprises a feeding mechanism and a discharging mechanism, which are respectively arranged close to the two ends of the conveying mechanism.

7. The battery secondary formation system according to claim 1, wherein The battery secondary formation system comprises a conveying mechanism, a first transfer mechanism, a formation device, a second transfer mechanism, a fake battery supply device and a sorting mechanism.

8. A battery secondary formation system characterized by comprising: The conveying mechanism is used for conveying a carrier device, and the carrier device is used for placing a plurality of batteries. The formation device and the sorting mechanism are sequentially arranged along the conveying mechanism. The first transfer mechanism is used for transferring the carrier device between the conveying mechanism and the formation device, and the second transfer mechanism is used for transferring the carrier device between the conveying mechanism and the sorting mechanism. The fake battery supply device is used for providing at least one fake battery. ​ ​ The sorting mechanism is used for transferring the unqualified batteries on one of the carriers to another carrier, and is also used for transferring the fake batteries to the another carrier. The batteries on the one carrier have undergone the treatment of the formation device.

9. A battery secondary formation method characterized by, The application further provides a battery secondary formation method. The formation device is used for performing formation operation on the batteries, and is preset with a battery quantity requirement. When the number of the batteries entering the formation device meets the battery quantity requirement, the formation device is in an enabled state. The method comprises the following steps: S1, performing first formation operation on a plurality of batteries in a first batch by the formation device; S2, placing the unqualified batteries after the first formation operation into a second batch; S3, when the number of the batteries in the second batch meets the battery quantity requirement, performing second formation operation on the batteries in the second batch by the formation device.

10. The battery secondary formation method according to claim 9, wherein The battery secondary formation method further comprises a timer, which is preset with a time threshold. In the step S3, the timer starts timing when the first battery in the second batch is placed; When the timing of the timer exceeds the time threshold and the number of the batteries in the second batch still does not meet the battery quantity requirement, the fake batteries are grabbed and placed into the second batch until the number of the batteries in the second batch and the number of the fake batteries meet the battery quantity requirement.

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