Formation equipment and formation method of battery monomer

Abstract

The embodiment of the invention discloses formation equipment and a formation method of a battery monomer, and relates to the technical field of battery production. The formation equipment comprises a formation unit, an exhaust assembly and an air supply assembly. The formation unit comprises a box body. And at least one formation area is arranged in the box body. And the formation areas are communicated with one another. The formation area is configured to accommodate a battery cell to be formed. And the exhaust assembly is communicated with at least one formation area. And the exhaust assembly is configured to exhaust air from the formation area. The air supply assembly is communicated with at least one formation area. The air supply assembly is configured to supply air to the formation area. According to the formation equipment disclosed by the embodiment of the invention, the energy consumption in the production process of the battery monomers is reduced, and meanwhile, the transformation of a formation plant is also facilitated, so that the maintenance environment of workers is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, and in particular to a formation equipment and a formation method of a battery cell. BACKGROUND

[0002] Batteries are increasingly widely used in life and production. For example, new energy vehicles equipped with batteries have been widely used, and batteries can be used to provide all or part of power for new energy vehicles. In addition, batteries are also increasingly used in the field of energy storage and the like.

[0003] At present, in the manufacturing process of batteries, in order to improve the performance of the battery, the battery needs to be subjected to formation treatment. In the related art, the energy consumption is relatively high during the formation of the battery. SUMMARY

[0004] Therefore, the embodiments of the present application aim to provide a formation equipment and a formation method of a battery cell, so as to reduce the energy consumption in the formation process of the battery cell.

[0005] To achieve the above-mentioned purpose, in a first aspect, the embodiments of the present application provide a formation equipment, comprising:

[0006] A formation unit, comprising a box body, at least one formation area is arranged in the box body, and each formation area is in communication with each other, and the formation area is configured to accommodate a battery cell to be formed;

[0007] An air exhaust assembly in communication with at least one formation area, and the air exhaust assembly is configured to exhaust air from the formation area;

[0008] An air supply assembly in communication with at least one formation area, and the air supply assembly is configured to supply air to the formation area.

[0009] In the above technical solution, the air supply assembly is used to supply air to the formation area, and the internal environment of the formation area can meet the requirements of the formation treatment of the battery cell. The formation area can meet the requirements of the formation treatment of the battery cell without introducing air from the formation workshop, i.e. without keeping the formation workshop in a high-temperature and low-humidity environment. The formation equipment is used in the formation workshop, and the formation workshop has a large space to store the battery cells to be formed and the battery cells after formation. Therefore, the space of the formation workshop is much larger than that of the formation area. After the formation area is controlled by the air supply assembly, the formation workshop can be in any environment, so that the control of the environment of the formation workshop can be cancelled, which is conducive to reducing the space that needs to be controlled in temperature, thereby reducing the energy consumption in the production process of the battery cell.

[0010] In addition, the environment condition of the formation workshop can be lowered, and the partition wall of the formation workshop can be removed, so that the environment condition of the formation workshop is closer to the outdoor environment condition, and the maintenance environment of the staff is improved, and the formation equipment is convenient for the transformation of the formation workshop to improve the maintenance environment of the staff.

[0011] In an embodiment, the formation group is arranged in the box, the formation group comprises two formation areas arranged along a first direction, and the air supply assembly comprises air supply main pipes and air supply branch pipes; along the first direction, one air supply main pipe is arranged on each side of the formation group, and each formation area of the formation group along the first direction is communicated with the air supply main pipe adjacent to the formation area through an air supply branch pipe.

[0012] In the above technical solution, the air supply main pipes and the formation areas are symmetrically arranged along the first direction, and along the first direction, the adjacent formation areas and the air supply main pipes are communicated through an air supply branch pipe, so that the number of the formation areas arranged in the box is increased as much as possible, the structure design of the air supply branch pipes is facilitated, the structure shapes of the air supply branch pipes are kept consistent, the production cost is reduced, and the structure of the formation equipment is simplified.

[0013] In an embodiment, the formation unit further comprises a charging device arranged in the formation area, the charging device is configured to charge the battery monomer, and the communication position of the air supply branch pipe and the formation area is towards the top of the battery monomer in the formation area.

[0014] In the above technical solution, the communication position of the air supply branch pipe and the formation area is towards the top of the battery monomer in the formation area, so that the air supply between the battery monomer and the charging device is facilitated, and the formation of the battery monomer at a more stable and suitable temperature is facilitated.

[0015] In an embodiment, the air supply assembly further comprises air valves, and the air valves are arranged on the air supply branch pipes.

[0016] In the above technical solution, the air valves are arranged on the air supply branch pipes, so that the air supply volume in each formation area can be controlled individually, the temperature in each formation area can be effectively controlled at a suitable temperature, and the formation effect of the battery monomer is improved.

[0017] In an embodiment, the air supply branch pipe comprises a first pipe segment and a second pipe segment which are communicated with each other, the first pipe segment is further communicated with the air supply main pipe, the second pipe segment is further communicated with the formation area, the cross section of the first pipe segment is square, and the cross section of the second pipe segment is flat and open.

[0018] In the technical scheme, the cross section of the first pipe section is square, and the cross section of the second pipe section is flat mouthed, so that the cross section of the air supply at the communication between the air supply branch pipe and the formation area can be changed under the premise that most of the structure of the air supply branch pipe is convenient to manufacture, so that the air supply area can better cover the formation area, and each battery monomer in the formation area is uniformly subjected to hot air, that is, the formation effect of the formation equipment is improved.

[0019] In one embodiment, the number of formation groups is multiple, and each formation group is arranged along a second direction intersecting the first direction.

[0020] In the technical scheme, a plurality of formation groups arranged along the second direction are formed on one box, so that the number of formation areas of the formation equipment is increased without increasing the number of boxes, that is, the installation components of the formation equipment are not increased, and the production efficiency of the formation equipment is ensured.

[0021] In one embodiment, the number of boxes is multiple, and at least part of the boxes are arranged along a second direction intersecting the first direction.

[0022] In the technical scheme, the number of formation areas is increased by arranging a plurality of boxes, and when the number of required formation areas is large, the size of a single box is controllable, so that the assembly of the formation equipment and the transfer of the box are facilitated.

[0023] In one embodiment, the number of boxes is multiple, and at least part of the boxes are arranged along the first direction.

[0024] In the technical scheme, a plurality of boxes are arranged along the first direction, on the one hand, the number of formation areas is increased under the condition that the size of the formation equipment in other directions is limited, and on the other hand, two adjacent boxes along the first direction can share one air supply assembly, so that the number of air supply assemblies is effectively controlled, and the total cost of the formation equipment is reduced.

[0025] In one embodiment, the formation unit further comprises a first fan arranged at the top of the formation area and a second fan arranged at the bottom of the formation area, and the first fan and the second fan are configured to supply air to the area between the first fan and the second fan.

[0026] In the technical scheme, by arranging the first fan and the second fan, the hot air supplied by the air supply assembly is blown to the middle area in the formation area by the first fan and the second fan, so that the temperature field in the formation area is more uniform.

[0027] In one embodiment, the formation unit further comprises a charging device arranged in the formation area, and the charging device is configured to charge the battery monomer.

[0028] In the above technical solution, the charging device is arranged in the formation area, so that the battery monomer in the formation area does not need to be introduced from the outside to form a power supply for the formation treatment, on the one hand, the battery monomer is convenient for the formation process; on the other hand, the formation area can better form a closed environment, so as to be conducive to the stable control of the environmental conditions in the formation area.

[0029] In an embodiment, the formation unit further comprises a negative pressure module arranged in the formation area, and the negative pressure module is configured to vacuumize the battery monomer.

[0030] In the above technical solution, the negative pressure module is arranged in the formation area, so as to facilitate the battery monomer to extract the gas generated inside the battery monomer during the formation treatment.

[0031] In an embodiment, the formation unit further comprises a thermometer, at least part of the thermometer is arranged in the formation area, and the thermometer is configured to obtain the temperature in the formation area.

[0032] In the above technical solution, the thermometer can obtain the real-time temperature in the formation area, so that the staff can take corresponding action to continuously control the temperature in the formation area to be in a suitable state.

[0033] In an embodiment, the formation unit further comprises a hygrometer, at least part of the hygrometer is arranged in the formation area, and the hygrometer is configured to obtain the humidity in the formation area.

[0034] In the above technical solution, the hygrometer can obtain the real-time humidity in the formation area, so that the staff can take corresponding action to continuously control the humidity in the formation area to be in a suitable state.

[0035] In an embodiment, the box body comprises a box body, a first door body and a second door body, the box body is provided with the formation area, and the formation area is open along the opposite sides of the third direction and forms a taking and placing opening and an inspection opening, the first door body is arranged at the taking and placing opening, and the second door body is arranged at the inspection opening.

[0036] In the above technical solution, the taking and placing opening is arranged, so as to facilitate the taking and placing of the battery monomer. The inspection opening is arranged, so as to facilitate the maintenance of the components in the formation area.

[0037] In an embodiment, the first door body is a folding door capable of moving in a direction parallel to the plane where the taking and placing opening is located.

[0038] In the technical solution, the first door body does not move in the direction of entering the formation area through the taking and placing opening or in the direction of leaving the formation area through the taking and placing opening. That is, during opening and closing, on one hand, the first door body does not intrude into the formation area, so that more battery monomers can be accommodated in the formation area; on the other hand, the first door body does not occupy the space of the region communicating with the external environment in the range of the taking and placing opening, so as to not affect the process of placing the battery monomers into the formation area through the taking and placing opening.

[0039] In an embodiment, the second door body comprises at least one rotating door, one side of the rotating door being rotatably connected with the box body.

[0040] In the technical solution, the second door body is a rotating door, and the opening area of the second door body is relatively large, so that a larger maintenance space can be provided, and meanwhile, the second door body has a better view after being opened, and the formation area is brighter, so that the staff can easily maintain the components in the formation area.

[0041] In a second aspect, an embodiment of the present application provides a battery monomer formation method applied to a formation device, the formation device comprising a control module, a charging device and a formation unit, the formation unit comprising a box body provided with at least one formation area, and the battery monomer formation method comprising the following steps.

[0042] In response to the battery monomer reaching the formation area, the control module adjusts a real-time working condition in the formation area to make the real-time working condition meet a formation working condition.

[0043] The control module controls the charging device to charge the battery monomer to complete formation.

[0044] In the technical solution, the battery monomer is formed after the working condition in the formation area is adjusted to meet the formation working condition, so that the battery monomer can be stably formed under a suitable working condition, thereby improving the performance of the battery monomer.

[0045] In an embodiment, the real-time working condition comprises temperature and / or humidity.

[0046] In the technical solution, the temperature and humidity in the formation area are controlled, so that the battery monomer can better form an SEI film during formation processing, and the possibility of water vapor entering the battery monomer is effectively reduced, thereby improving the performance of the battery monomer.

[0047] In an embodiment, the formation device comprises an air supply assembly communicating with at least one formation area, the air supply assembly being configured to supply air to the formation area, and the control module adjusts the real-time working condition in the formation area to make the real-time working condition meet the formation working condition.

[0048] acquiring a real-time temperature in the formation zone;

[0049] if it is determined that the real-time temperature is lower than the formation temperature, controlling a blast valve of the air supply assembly to open; if it is determined that the real-time temperature is higher than the formation temperature, controlling the blast valve of the air supply assembly to close.

[0050] In the technical solution, the real-time temperature in the formation zone is controlled to be always at the formation temperature by controlling the blast valve, so that the battery cell can be formed at a suitable temperature, thereby improving the performance of the battery cell.

[0051] In an embodiment, the formation device comprises a dehumidification assembly, and the control module adjusts a real-time working condition in the formation zone to meet a formation working condition, comprising:

[0052] acquiring a real-time humidity in the formation zone;

[0053] if it is determined that the real-time humidity is higher than a formation humidity, controlling the dehumidification assembly to open to dehumidify the formation zone.

[0054] In the technical solution, the real-time humidity in the formation zone is acquired, and the formation zone is kept in a low-humidity working condition by the dehumidification assembly, so that the possibility of water vapor entering the battery cell is reduced when the battery cell is formed, thereby improving the performance of the battery cell.

[0055] In an embodiment, the box comprises a box body and a first door body, the box body is provided with the formation zone, and the formation zone is open along one side of the third direction and forms a taking and placing opening, the first door body is arranged at the taking and placing opening, and the formation device further comprises a transfer module, and the response to the battery cell reaching the formation zone comprises:

[0056] the control module controls the transfer module to transfer the battery cell to the first door body and controls the first door body to open;

[0057] the control module controls the transfer module to transfer the battery cell to the formation zone through the first door body and then controls the first door body to close.

[0058] In the technical solution, the battery cell to be formed is transferred to the formation zone by the transfer module for formation, and this process does not require manual operation, thereby reducing labor costs; at the same time, the automation degree of the battery cell formation process is relatively high, which is beneficial to improving the production efficiency of the battery cell.

[0059] In an embodiment, the formation method further comprises:

[0060] The transport module moves to the first door, and the control module controls the first door to open;

[0061] The transport module enters the formation area through the first door and carries the battery cell completed formation out of the formation area;

[0062] The control module controls the first door to close.

[0063] In the above technical solution, the battery cell completed formation is transported by the transport module, the first door can automatically cooperate with the transport module, and this process does not need manual operation, thereby reducing the labor cost; meanwhile, the automation degree of the battery cell formation process is relatively high, which is conducive to improving the production efficiency of the battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0064] Figure 1 It is a first view schematic diagram of the formation equipment of an embodiment of the present application;

[0065] Figure 2 It is a second view schematic diagram of the formation equipment of an embodiment of the present application;

[0066] Figure 3 It is a cutaway view of the formation equipment of an embodiment of the present application, wherein the cutaway surface is parallel to the first direction;

[0067] Figure 4 It is a schematic diagram of the installation structure of the air supply branch pipe and the air valve of an embodiment of the present application;

[0068] Figure 5 It is a schematic diagram of the cooperation of each component in the formation area of the formation equipment of an embodiment of the present application;

[0069] Figure 6 It is a schematic diagram of the structure of the formation equipment of another embodiment of the present application;

[0070] Figure 7 It is a schematic diagram of the structure of the formation equipment of still another embodiment of the present application;

[0071] Figure 8 It is a flow schematic diagram of the formation method of the battery cell of an embodiment of the present application.

[0072] BRIEF DESCRIPTION OF DRAWINGS

[0073] 100, formation equipment; 10, formation unit; 11, box body; 111, box main body; 111a, formation area; 111b, taking and placing opening; 111c, maintenance opening; 112, first door body; 113, second door body; 20, exhaust assembly; 30, air supply assembly; 31, air supply main pipe; 32, air supply branch pipe; 321, first pipe section; 322, second pipe section; 33, air valve; 40, charging device; 50, first fan; 60, second fan; 70, negative pressure module; 80, thermometer; 90, hygrometer; 200, bearing device; 300, battery monomer. DETAILED DESCRIPTION

[0074] 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. The following embodiments are only used to clarify the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0075] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0076] In this document, the term "embodiment" means that the specific features, structures or properties described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. A person skilled in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0077] In the description of the embodiments of the present application, the term "and / or" is only a description of the association 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 this document generally represents an "or" relationship between the front and rear associated objects.

[0078] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0079] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0080] Next, the present application will be described in detail.

[0081] The formation device and the formation method of the battery cell provided by the embodiments of the present application are both used in the production of the battery of the present application. In order to make the formation device and the formation method of the battery cell of the present application more clear, before describing the formation device and the formation method of the battery cell of the present application, the battery of the present application is introduced.

[0082] The battery provided by the embodiments of the present application can be used alone. The battery can also be used as a battery pack in groups. The battery and the battery pack can be used in an electrical device, but are not limited to. The electrical device includes but is not limited to mobile phones, tablets, notebook computers, electric toys, electric tools, vehicles, ships or spacecraft, etc. Among them, the spacecraft can include airplanes, rockets, space shuttles and spaceships, etc.

[0083] Taking the electrical device of an embodiment of the present application as an example, the vehicle can be a fuel car, a gas car or a new energy car, and the new energy car can be a pure electric car, a hybrid car or an extended range car, etc. The vehicle is internally provided with a battery, which can be arranged at the bottom of the vehicle or at the front or tail of the vehicle. The battery can be used for power supply of the vehicle, for example, the battery can be used as the operating power supply of the vehicle. In some embodiments, the battery can not only be used as the operating power supply of the vehicle, but also be used as the driving power supply of the vehicle, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle.

[0084] The battery can be a lithium ion battery, a sodium lithium ion battery, a lithium metal battery or a lithium-sulfur battery, etc., which is not limited by the embodiments of the present application.

[0085] The battery includes at least one battery cell. The battery cell is an energy storage component of the battery. The battery also includes a battery monitoring and management device for monitoring the charge level of the battery cell.

[0086] In the battery, the battery cell can be multiple, and the multiple battery cells can be connected in series, in parallel, or in a mixed connection. The mixed connection means that there are both series and parallel connections among the multiple battery cells. The multiple battery cells can be directly connected in series, in parallel, or in a mixed connection. Of course, the battery can also be in the form of multiple battery cells connected in series, in parallel, or in a mixed connection to form a battery module, and multiple battery modules connected in series, in parallel, or in a mixed connection to form a whole.

[0087] In the embodiments of the present application, the battery cell can be a secondary battery cell, which means that the battery cell can be activated by charging after discharging.

[0088] The battery cell can be a cylindrical battery cell, a prismatic battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square battery cell or a multi-prismatic battery cell, such as a hexagonal battery cell, etc. The present application does not have a particular limitation.

[0089] The internal cavity of the battery cell is used to place the electrode assembly and the electrolyte. For example, the battery cell includes a housing, an electrode assembly, and an electrolyte, and the electrode assembly and the electrolyte are placed in the housing. The housing is used to encapsulate the electrode assembly and the electrolyte, etc. The housing is provided with a liquid injection hole, and the electrolyte is injected into the internal cavity through the liquid injection hole.

[0090] During the production process of the battery cell, the battery cell needs to be subjected to formation treatment, which means the first charging process to activate the battery. During the formation treatment of the battery cell, gas is generated inside the battery cell, which can cause the battery cell to swell and deform if left in the battery cell, thereby adversely affecting the performance of the battery cell. Therefore, the gas inside the battery cell needs to be extracted during the formation treatment of the battery cell.

[0091] The battery cell is provided with a liquid injection hole, through which the electrolyte can be injected into the battery cell. Of course, the gas generated inside the battery cell during the formation treatment can also be extracted through the liquid injection hole.

[0092] The battery cell needs to complete the formation process in a formation workshop. In the related art, the battery cell has an open injection hole. That is, the injection hole of the battery cell is in an open state during the process of being transported into a formation machine in the formation workshop for formation treatment and the process of being transported from the formation machine to a designated stacking storage position in the formation workshop after the formation is completed. Therefore, the production process of the formation process has a high requirement on the environmental conditions in the formation workshop. In order to facilitate the battery cell to better form the SEI film, the entire formation workshop needs to be kept in a high-temperature and low-humidity environment, which causes high energy consumption. At the same time, the formation workshop in a high-temperature environment is not convenient for production personnel to maintain the equipment in the formation workshop.

[0093] The battery cell provided by the embodiment of the present application further includes a switch valve arranged at the injection hole, so that the opening and closing of the internal cavity of the battery cell can be realized. That is, the injection hole of the battery cell can be closed by the switch valve before and after the formation treatment, so that the requirement on the environmental conditions in the formation workshop is reduced.

[0094] Therefore, the embodiment of the present application provides a formation device in a first aspect. The formation device includes a formation unit, an air exhaust assembly, and an air supply assembly. The formation unit includes a box body. At least one formation area is arranged in the box body. The formation areas are communicated with each other. The formation area is configured to accommodate a battery cell to be formed. The air exhaust assembly is communicated with the at least one formation area. The air exhaust assembly is configured to exhaust air from the formation area. The air supply assembly is communicated with the at least one formation area. The air supply assembly is configured to supply air to the formation area.

[0095] In the above technical solution, the air supply assembly is used to supply air to the formation area, so that the environmental conditions required by the battery cell for formation treatment can be met in the formation area. The formation area can meet the requirement of the battery cell for formation treatment without introducing air from the formation workshop, that is, the formation workshop does not need to be kept in a high-temperature and low-humidity environment. The formation device is used in the formation workshop, and the formation workshop has a large space to store the battery cell to be formed and the battery cell after formation. Therefore, the space of the formation workshop is much larger than that of the formation area. After the formation area is controlled by the air supply assembly, the formation workshop can have any environmental conditions, so that the control of the environmental conditions of the formation workshop can be cancelled, which is beneficial to reduce the space that needs to be controlled in temperature and thus reduce the energy consumption in the production process of the battery cell.

[0096] In addition, after the requirement on the environmental conditions of the formation workshop is reduced, the partition wall of the formation workshop can be cancelled, and the environmental conditions in the formation workshop can be closer to the outdoor environmental conditions, so that the maintenance environment of the workers is improved, that is, the formation device is also beneficial to improve the maintenance environment of the workers.

[0097] The application will be described in further detail below with reference to the drawings.

[0098] Please refer to Figures 1 to 7 In a first aspect, the embodiments of the application provide a formation device. The formation device 100 comprises a formation unit 10, an exhaust assembly 20 and an air supply assembly 30. The formation unit 10 comprises a box 11. At least one formation area 111a is arranged in the box 11. The formation areas 111a are in communication with each other. The formation area 111a is configured to accommodate a battery cell 300 to be formed. The exhaust assembly 20 is in communication with the at least one formation area 111a. The exhaust assembly 20 is configured to exhaust air from the formation area 111a. The air supply assembly 30 is in communication with the at least one formation area 111a. The air supply assembly 30 is configured to supply air to the formation area 111a.

[0099] The formation device 100 is used for formation processing of the battery cell 300.

[0100] The box 11 is used to isolate the internal environment from the external environment. The box 11 is air-tight to prevent the internal gas from leaking out. The specific structure of the box 11 is not limited. For example, a plurality of spaces are arranged in the box 11 and are in communication with each other, and each space forms a formation area 111a.

[0101] The shape of the box 11 is not limited. For example, the box 11 can be square-shaped, which is convenient to install and has a relatively high space utilization rate.

[0102] The formation area 111a is used to accommodate the battery cell 300, and the battery cell 300 is subjected to formation processing in the formation area 111a.

[0103] A plurality of battery cells 300 can be accommodated in the formation area 111a. The plurality of battery cells 300 can be integrally transported into the formation area 111a by the carrying device 200 for formation processing.

[0104] The type of the carrying device 200 is not limited. For example, the carrying device 200 can be a tray or the like.

[0105] The number of the formation areas 111a can be one or more. When the formation areas 111a are multiple, the plurality of formation areas 111a are in communication with each other, so that the air supply assembly 30 can supply air to all the formation areas 111a.

[0106] It can be understood that the battery cell 300 needs to be subjected to formation processing at a suitable temperature, so as to facilitate the formation of the SEI film. For example, the SEI film is better formed at about 45°C. Therefore, the battery cell 300 is generally subjected to formation processing at a temperature of about 45°C.

[0107] The temperature of the air sent by the air supply assembly 30 is suitable for the temperature required for the battery cell 300 to perform the formation process in the formation zone 111a.

[0108] The air sent by the air supply assembly 30 can be dry air, so that the air does not need to be dehumidified. Of course, the air supply assembly 30 can also send air with high humidity, and the air with high humidity can also be used for the battery cell 300 to perform the formation process after being dehumidified by the dehumidification assembly of the formation device 100.

[0109] The air exhaust assembly 20 can facilitate the air in the formation zone 111a to be exhausted.

[0110] It can be understood that, by separately supplying air into the formation zone 111a by the air supply assembly 30, the formation zone 111a can meet the environmental condition requirements required for the battery cell 300 to perform the formation process. The formation zone 111a does not need to introduce air in the formation workshop to meet the formation process of the battery cell 300, that is, the formation workshop does not need to be kept in a high-temperature and low-humidity environmental condition. The formation device 100 is placed in the formation workshop for work, and the formation workshop has a larger space for storing the battery cell 300 to be formed and the battery cell 300 after formation. Therefore, the space of the formation workshop is much larger than the space in the formation zone 111a. After the formation zone 111a is separately controlled by the air supply assembly 30, the formation workshop can be in any environmental condition, so that the control of the environmental condition of the formation workshop can be cancelled, that is, it is beneficial to reduce the space that needs to be controlled in temperature, thereby reducing the energy consumption in the production process of the battery cell 300.

[0111] In addition, after the environmental condition requirement of the formation workshop is reduced, the partition wall of the formation workshop can also be cancelled, and the environmental condition in the formation workshop can be closer to the outdoor environmental condition, thereby improving the maintenance environment of the workers, that is, the formation device 100 is also beneficial to the transformation of the formation workshop to improve the maintenance environment of the workers.

[0112] Please refer to Figures 1 to 3 In an embodiment, the box body 11 is provided with a formation group. The formation group includes two formation zones 111a arranged along a first direction. The air supply assembly 30 includes an air supply main pipe 31 and an air supply branch pipe 32. Along the first direction, one air supply main pipe 31 is arranged on each side of the formation group. And any formation zone 111a of the formation group along the first direction is communicated with the air supply main pipe 31 adjacent to the formation zone 111a through an air supply branch pipe 32.

[0113] The specific direction of the first direction is not limited. Exemplarily, the first direction is the direction shown by X in Figures 1 to 3 、 Figure 6 and Figure 7 .

[0114] The number of air supply branch pipes 32 corresponds to the number of formation zones 111a, so that the temperature in each formation zone 111a can be controlled individually.

[0115] Any formation zone 111a in the formation group along the first direction is communicated with the air supply main pipe 31 adjacent to the formation zone 111a through one air supply branch pipe 32. Specifically, for one of the formation zones 111a in the formation group, for example, Figure 3 as shown, the formation zone 111a on the first side of the first direction is communicated with the air supply main pipe 31 on the first side of the first direction through one air supply branch pipe 32.

[0116] The air supply main pipe 31 and the formation zone 111a can be symmetrically arranged along the first direction, and in the first direction, the adjacent formation zone 111a and the air supply main pipe 31 are communicated through one air supply branch pipe 32. On the premise of increasing the number of formation zones 111a arranged in the box 11 as much as possible, it is also convenient to design the structure of the air supply branch pipe 32. The structure of each air supply branch pipe 32 can be kept consistent, thereby reducing the production cost and simplifying the structure of the formation equipment 100.

[0117] Please refer to Figures 1 to 3 and Figure 5 In an embodiment, the formation unit 10 further comprises a charging device 40 arranged in the formation zone 111a. The charging device 40 is configured to charge the battery monomer 300. The communication position of the air supply branch pipe 32 and the formation zone 111a is towards the top of the battery monomer 300 in the formation zone 111a.

[0118] The charging device 40 can include a positive electrode module and a negative electrode module, thereby achieving the charging of the battery monomer 300.

[0119] It can be understood that during the formation process of the battery monomer 300, the charging device 40 performs formation treatment on the battery monomer 300 through the pole of the battery monomer 300.

[0120] The communication position of the air supply branch pipe 32 and the formation zone 111a is towards the top of the battery monomer 300 in the formation zone 111a, so as to facilitate air supply between the battery monomer 300 and the charging device 40, thereby facilitating the completion of the formation of the battery monomer 300 at a more stable and suitable temperature.

[0121] Please refer to Figures 1 to 4 In an embodiment, the air supply assembly 30 further comprises an air valve 33. The air valve 33 is arranged on each air supply branch pipe 32.

[0122] The type of the air valve 33 is not limited. For example, it can be a manually adjusted valve, an electrically adjusted valve, etc. Of course, the air valve 33 can also be a proportional valve capable of realizing stepless adjustment of air volume, or a on-off control valve capable of only being fully opened or fully closed, etc. The present application does not limit this.

[0123] It can be understood that the battery cell 300 generates a certain amount of heat during the formation process. If a large amount of air is continuously sent into the formation area 111a, the temperature in the formation area 111a will be too high, thereby affecting the formation effect of the battery cell 300.

[0124] When the temperature in the formation area 111a is too high, the air valve 33 can be closed or the opening degree of the air valve 33 can be reduced, so as to appropriately reduce the air volume, so as to maintain the temperature in the formation area 111a at an appropriate temperature. Of course, reducing the air supply for a long time will also gradually reduce the temperature in the formation area 111a. When the temperature is low, the air valve 33 can be opened or the opening degree of the air valve 33 can be increased, so as to make the temperature in the formation area 111a rise again to the appropriate temperature.

[0125] By arranging the air valve 33 on each air supply branch pipe 32, the air supply volume in each formation area 111a can be controlled individually, so that the temperature in each formation area 111a can be effectively controlled at an appropriate temperature, which is beneficial to improve the formation effect of the battery cell 300.

[0126] Please refer to Figures 1 to 4 In an embodiment, the air supply branch pipe 32 includes a first pipe section 321 and a second pipe section 322 which are in communication with each other. The first pipe section 321 is also in communication with the air supply main pipe 31. The second pipe section 322 is also in communication with the formation area 111a. The cross section of the first pipe section 321 is square, and the cross section of the second pipe section 322 is oblong.

[0127] In this embodiment, the air valve 33 of the air supply assembly 30 is arranged on the first pipe section 321.

[0128] The cross section of the first pipe section 321 refers to the cross section formed after the first pipe section 321 is cut by a plane perpendicular to the flow direction of the air flow in the first pipe section 321.

[0129] The cross section of the second pipe section 322 can be understood according to the cross section of the first pipe section 321.

[0130] The square can be a square or a rectangle. That is, the first pipe section 321 is substantially a square column, and the square column-shaped first pipe section 321 is convenient to manufacture.

[0131] The oblong refers to a mouth shape formed by two long sides and two short sides.

[0132] The second pipe section 322 gradually increases in diameter from the side close to the first pipe section 321 to the side close to the box 11, i.e. the second pipe section 322 is similar to a flared structure.

[0133] The flow channel in the second pipe section 322 is generally conical and flared.

[0134] The flared part of the second pipe section 322 extends in the third direction.

[0135] Exemplarily, the third direction is the direction shown by Z in Figure 1 、 Figure 2 and Figure 4 .

[0136] One formation area 111a generally contains multiple battery monomers 300 for formation.

[0137] The first pipe section 321 has a square cross section, and the second pipe section 322 has a flared cross section, so that the cross section of the air supply branch pipe 32 at the position where it communicates with the formation area 111a can be changed, so that the air supply area can better cover the formation area 111a, and the battery monomers 300 in the formation area 111a can be uniformly heated by the hot air, i.e. the formation effect of the formation equipment 100 is improved.

[0138] In one embodiment, please refer to Figures 1 to 3 , the number of formation groups is multiple, and each formation group is arranged along the second direction, and the second direction intersects the first direction.

[0139] The specific direction of the second direction is not limited. For example, it is the direction shown by Y in Figures 1 to 3 .

[0140] In this embodiment, the formation equipment 100 can only include one box 11.

[0141] Multiple formation groups are arranged on one box 11 along the second direction, so that the number of formation areas 111a of the formation equipment 100 is increased without increasing the number of boxes 11, i.e. the installation parts of the formation equipment 100 are not increased, and the production efficiency of the formation equipment 100 is improved.

[0142] Please refer to Figures 1 to 3 、 Figure 6 and Figure 7 , in one embodiment, the number of boxes 11 is multiple. At least part of the boxes 11 are arranged along the second direction, and the second direction intersects the first direction.

[0143] Of course, in this embodiment, multiple formation groups can also be arranged on each tank 11. For example, two formation groups are arranged on each tank 11, i.e. each tank 11 has four formation areas 111a.

[0144] By arranging multiple tanks 11 to increase the number of formation areas 111a, when the number of required formation areas 111a is large, the size of a single tank 11 can be controlled, thereby facilitating assembly of the formation device 100 and transportation of the tank 11.

[0145] Referring to Figures 1 to 3 and Figure 7 , in an embodiment, the number of tanks 11 is multiple. At least part of the tanks 11 are arranged along the first direction.

[0146] Generally, in use, the first direction is the horizontal direction and the second direction is the height direction.

[0147] The height of the formation device 100 should not be too high, and the height of the topmost formation area 111a of the height-appropriate formation device 100 should also not be too high, thereby facilitating maintenance, placement or removal of the battery monomer 300 in the formation area 111a.

[0148] By arranging multiple tanks 11 along the first direction, on the one hand, the number of formation areas 111a can be increased when the formation device 100 is limited in size in other directions; on the other hand, two adjacent tanks 11 along the first direction can share a single air supply assembly 30, thereby effectively controlling the number of air supply assemblies 30 and reducing the overall cost of the formation device 100.

[0149] Referring to Figures 1 to 3 and Figure 5 , in an embodiment, the formation unit 10 further comprises a first fan 50 arranged at the top of the formation area 111a and a second fan 60 arranged at the bottom of the formation area 111a. The first fan 50 and the second fan 60 are both configured to supply air to the area between the first fan 50 and the second fan 60.

[0150] The types of the first fan 50 and the second fan 60 are not limited. For example, they can be electrically controlled.

[0151] The number of the first fan 50 and the second fan 60 is not limited.

[0152] The first fan 50 can be an air volume adjustable fan or a fan that can only be fully opened or fully closed. The same applies to the second fan 60.

[0153] The first fan 50 and the second fan 60 are arranged along the second direction.

[0154] When the formation device 100 further comprises the charging device 40 and the negative pressure module 70, the charging device 40 and the negative pressure module 70 are arranged between the first fan 50 and the second fan 60. The battery cell 300 is also located between the first fan 50 and the second fan 60.

[0155] By arranging the first fan 50 and the second fan 60, the first fan 50 and the second fan 60 blow the hot air sent by the air supply assembly 30 into the formation area 111a to the middle region in the formation area 111a, so that the temperature field in the formation area 111a is more uniform.

[0156] Referring to Figures 1 to 3 and Figure 5 In an embodiment, the formation unit 10 further comprises the charging device 40 arranged in the formation area 111a. The charging device 40 is configured to charge the battery cell 300.

[0157] The charging device 40 comprises a positive electrode module and a negative electrode module.

[0158] When the battery cell 300 is subjected to the formation treatment, the power supply assembly charges the battery cell 300 through the pole of the battery cell 300.

[0159] By arranging the charging device 40 in the formation area 111a, the battery cell 300 in the formation area 111a does not need to be introduced from the outside to be subjected to the formation treatment, on the one hand, which facilitates the formation process of the battery cell 300; on the other hand, the formation area 111a can better form a closed environment, which is conducive to the stable control of the environmental conditions in the formation area 111a.

[0160] Referring to Figures 1 to 3 and Figure 5 In an embodiment, the formation unit 10 further comprises the negative pressure module 70 arranged in the formation area 111a. The negative pressure module 70 is configured to vacuumize the battery cell 300.

[0161] It can be understood that when the battery cell 300 is subjected to the formation treatment, chemical reactions occur inside the battery cell 300 and generate certain gas. The generated gas is extracted from the inside of the battery cell 300, which can avoid affecting the performance of the battery cell 300.

[0162] The structure of the negative pressure module 70 is not limited. For example, it can be a suction nozzle, which is in communication with a negative pressure source. The negative pressure source can be a negative pressure pump. After the suction nozzle is suctioned to the liquid injection hole of the battery cell 300, the generated gas in the battery cell 300 can be extracted.

[0163] By arranging the negative pressure module 70 in the formation area 111a, the generated gas in the battery cell 300 can be extracted synchronously when the battery cell 300 is subjected to the formation treatment.

[0164] Referring to Figures 1 to 3 and Figure 5 In an embodiment, the formation unit 10 further comprises a thermometer 80. At least part of the thermometer 80 is arranged in the formation area 111a and configured to acquire the temperature in the formation area 111a.

[0165] The type of the thermometer 80 is not limited. For example, it can be a temperature sensor, etc.

[0166] At least part of the thermometer 80 being arranged in the formation area 111a means that, based on the thermometer 80 with a lead, the temperature measuring probe of the thermometer 80 is arranged in the formation area 111a, and the lead is connected with the control module of the formation device 100. Of course, based on the thermometer 80 capable of realizing signal transmission without contact, the thermometer 80 can also be arranged in the formation area 111a as a whole.

[0167] Through the thermometer 80, the real-time temperature in the formation area 111a can be acquired, so that the staff can take corresponding actions to continuously control the temperature in the formation area 111a to be in a suitable state.

[0168] Referring to Figures 1 to 3 and Figure 1 In an embodiment, the formation unit 10 further comprises a hygrometer 90. At least part of the hygrometer 90 is arranged in the formation area 111a and configured to acquire the humidity in the formation area 111a.

[0169] The type of the hygrometer 90 is not limited. For example, it can be a humidity sensor, etc.

[0170] At least part of the hygrometer 90 being arranged in the formation area 111a means that, based on the hygrometer 90 with a lead, the probe of the hygrometer 90 is arranged in the formation area 111a, and the lead is connected with the control module of the formation device 100. Of course, based on the hygrometer 90 capable of realizing signal transmission without contact, the hygrometer 90 can also be arranged in the formation area 111a as a whole.

[0171] Through the hygrometer 90, the real-time humidity in the formation area 111a can be acquired, so that the staff can take corresponding actions to continuously control the humidity in the formation area 111a to be in a suitable state.

[0172] Referring to Figure 2 In an embodiment, the box body 11 comprises a box body 111, a first door body 112 and a second door body 113. The box body 111 is provided with the formation area 111a. The formation area 111a is open along opposite sides in the third direction and forms a taking and placing opening 111b and an inspection opening 111c. The first door body 112 is arranged at the taking and placing opening 111b. The second door body 113 is arranged at the inspection opening 111c.

[0173] The taking and placing opening 111b is used to place the battery monomer 300 into the formation area 111a or take the formed monomer out of the formation area 111a.

[0174] The maintenance opening 111c is convenient for the staff to maintain the components in the formation area 111a.

[0175] The specific direction of the third direction is not limited. For example, it is the direction shown by Z in Figure 1 and Figure 2 .

[0176] The first direction, the second direction and the third direction intersect with each other. Specifically, they can be orthogonal to each other.

[0177] On the premise that the air supply assembly 30 is arranged on both sides of the first direction, the third direction intersects with the first direction, and during the process of taking and placing the battery monomer 300 in the formation area 111a through the taking and placing opening 111b and during the process of maintaining the components in the formation area 111a through the maintenance opening 111c, the air supply assembly 30 will not affect the process.

[0178] The first door body 112 can facilitate the opening and closing of the taking and placing opening 111b. During the process of taking and placing the battery monomer 300, the first door body 112 opens the taking and placing opening 111b, and during the process of forming the battery monomer 300, the first door body 112 closes the taking and placing opening 111b.

[0179] The second door body 113 can facilitate the opening and closing of the maintenance opening 111c. When the components in the formation area 111a need to be maintained, the second door body 113 is used to open the maintenance opening 111c, and after the maintenance is completed, the second door body 113 is used to close the maintenance opening 111c.

[0180] By arranging the taking and placing opening 111b, the taking and placing of the battery monomer 300 is facilitated. By arranging the maintenance opening 111c, the maintenance of the components in the formation area 111a is facilitated.

[0181] Please refer to Figure 2 In an embodiment, the first door body 112 is a folding door which can move in a direction parallel to the plane on which the taking and placing opening 111b is arranged.

[0182] Of course, the first door body 112 can also be a vertical hinged door, a sliding door, a partition door, etc.

[0183] The first door body 112 does not generate movement in the direction of entering the formation area 111a through the taking and placing opening 111b and in the direction of leaving the formation area 111a through the taking and placing opening 111b. That is, in the process of opening and closing, on one hand, the first door body 112 does not intrude into the inside of the formation area 111a, so that more battery monomers 300 can be accommodated in the inside of the formation area 111a; on the other hand, the first door body 112 also does not occupy the space of the region communicating with the external environment in the range of the taking and placing opening 111b, so as to not affect the process of placing the battery monomers 300 into the inside of the formation area 111a through the taking and placing opening 111b.

[0184] Please refer to Figures 1 to 7 In an embodiment, the second door body 113 comprises at least one rotating door. One side of the rotating door is rotatably connected with the box body 111.

[0185] The rotatably connecting manner of the rotating door with the box body 111 is not limited. For example, it can be hinged connection, pin shaft connection, etc.

[0186] Exemplarily, as Figures 1 to 8 shown, the second door body 113 comprises two rotating doors, so that the second door body 113 is similar to a double-leaf door.

[0187] The second door body 113 is provided as a rotating door, the opening area of the second door body 113 is relatively large, so as to provide larger maintenance space, at the same time, the second door body 113 has better view after being opened, the inside of the formation area 111a is brighter, so as to facilitate the staff to maintain the components in the formation area 111a.

[0188] Please refer to ​In an embodiment, the formation device 100 comprises the formation unit 10, the exhaust assembly 20 and the air supply assembly 30. The formation unit 10 comprises a box 11, and four formation zones 111a are arranged in the box 11. Two formation zones 111a are arranged in a formation group along a first direction. Two formation groups are arranged along a second direction on one box 11. The formation zones 111a in each box 11 are communicated with each other. The number of the boxes 11 is plural, and the boxes 11 are arranged in a matrix along the first direction and the second direction. An air supply assembly 30 is arranged on each side of any box 11 along the first direction. An exhaust assembly 20 is arranged between each two boxes 11 along the second direction. The air supply assembly 30 comprises an air supply main pipe 31 and an air supply branch pipe 32. The number of the air supply branch pipes 32 corresponds to the number of the formation zones 111a. Each formation zone 111a is communicated with the nearest air supply main pipe 31 along the first direction through an air supply branch pipe 32. Two adjacent boxes 11 along the first direction share one air supply main pipe 31. The air supply branch pipe 32 comprises a first pipe section 321 and a second pipe section 322. The air supply main pipe 31 passes through the first pipe section 321 and the second pipe section 322 in sequence to supply air to the formation zones 111a. The air supply assembly 30 further comprises a wind valve 33 arranged on the first pipe section 321. The first pipe section 321 is a square pipe, and the second pipe section 322 is a tapered flat mouth pipe.

[0189] The box 11 comprises a box body 111, a first door body 112 and a second door body 113. The formation zones 111a are arranged in the box body 111. The formation zones 111a are open along opposite sides of a third direction to form a taking and placing opening 111b and an inspection opening 111c. The first door body 112 is arranged at the taking and placing opening 111b, and the second door body 113 is arranged at the inspection opening 111c. The first door body 112 is a folding door, a sliding door or a swing door, etc. The second door body 113 is a double-leaf door. The first door body 112 and the second door body 113 can realize automatic opening and closing.

[0190] A humidity meter 90, a temperature meter 80, a negative pressure module 70, a first fan 50, a second fan 60 and a charging device 40 are arranged in each formation zone 111a. Two temperature meters 80 are arranged on two opposite corners at the top of the formation zone 111a. The probe of the humidity meter 90 is introduced into the communication position of the exhaust assembly 20 and the formation zone 111a.

[0191] Please refer to ​ In a second aspect, the embodiment of the present application provides a formation method of a battery monomer. The formation method is applied to the formation device 100. The formation device 100 comprises a control module, the charging device 40 and the formation unit 10. The formation unit 10 comprises a box 11 provided with at least one formation zone 111a. The formation method comprises the following steps.

[0192] S100: In response to the battery cell reaching the formation zone, the control module adjusts the real-time working condition in the formation zone to make the real-time working condition meet the formation working condition.

[0193] S200: The control module controls the charging device to charge the battery cell to complete the formation.

[0194] It should be noted that the formation equipment 100 can be the formation equipment 100 of any embodiment of the present application. The formation equipment 100 can also include any component mentioned in the foregoing. Since the formation equipment 100 has been described in detail in the foregoing, the present application will not be described here.

[0195] The type of control module is not limited. For example, it can be a control mainboard.

[0196] By adjusting the implementation working condition in the formation zone 111a to meet the formation working condition before forming the battery cell 300, the battery cell 300 can be stably formed in a suitable working condition, thereby facilitating the improvement of the performance of the battery cell 300.

[0197] In an embodiment, the real-time working condition includes temperature and / or humidity.

[0198] Specifically, the battery cell 300 needs to be formed at a relatively high temperature. For example, at about 45°C, the SEI film can be better formed.

[0199] Of course, since the battery cell 300 needs to extract the gas generated inside during the formation process, the injection hole of the battery cell 300 needs to be kept open. By keeping the humidity at a low level, the possibility of water vapor entering the inside of the battery cell 300 can be effectively reduced.

[0200] That is, by controlling the temperature and humidity in the formation zone 111a, the battery cell 300 can better form the SEI film during the formation process, and the possibility of water vapor entering the inside of the battery cell 300 can be effectively reduced, that is, the performance of the battery cell 300 can be improved.

[0201] In an embodiment, the formation equipment 100 includes an air supply assembly 30. The air supply assembly 30 is in communication with at least one formation zone 111a. The air supply assembly 30 is configured to supply air to the formation zone 111a. The control module adjusts the real-time working condition in the formation zone to make the real-time working condition meet the formation working condition, including:

[0202] Obtain the real-time temperature in the formation zone.

[0203] If it is determined that the real-time temperature is lower than the formation temperature, the air valve of the air supply assembly is opened; if it is determined that the real-time temperature is higher than the formation temperature, the air valve of the air supply assembly is closed.

[0204] The temperature measuring device 80 can be arranged in the formation area 111a to obtain the real-time temperature in the formation area 111a. The temperature measuring device 80 feeds back the obtained real-time temperature through an electrical signal or other signals.

[0205] The formation temperature can have a minimum value and a maximum value. When the real-time temperature is lower than the minimum value of the formation temperature, the control module controls the air valve 33 to open. After the air valve 33 is opened, the air supply assembly 30 can supply air to the formation area 111a, and the real-time temperature in the formation area 111a can gradually increase. When the real-time temperature is higher than the maximum value of the formation temperature, the control module controls the air valve 33 to close. After the air valve 33 is closed, the real-time temperature in the formation area 111a can gradually decrease.

[0206] It should be noted that when the air valve 33 is a valve that can only be fully opened or fully closed, the air valve 33 is opened, which means that the air valve 33 is fully opened, and the air valve 33 is closed, which means that the air valve 33 is fully closed. When the air valve 33 is a proportional valve that can be steplessly adjusted, the air valve 33 can be opened by increasing the opening degree of the air valve 33 based on the difference between the real-time temperature and the minimum value of the formation temperature, and the air valve 33 can be closed by decreasing the opening degree of the air valve 33 based on the difference between the real-time temperature and the maximum value of the formation temperature.

[0207] By controlling the air valve 33 to keep the real-time temperature in the formation area 111a at the formation temperature, the battery monomer 300 can be formed at an appropriate temperature, thereby improving the performance of the battery monomer 300.

[0208] In an embodiment, the formation device 100 includes a dehumidification assembly. The control module adjusts the real-time working condition in the formation area to meet the formation working condition, including:

[0209] Obtaining the real-time humidity in the formation area.

[0210] If it is determined that the real-time humidity is higher than the formation humidity, the control module controls the dehumidification assembly to open to dehumidify the formation area.

[0211] The humidity measuring device 90 can be arranged in the formation area 111a to obtain the real-time humidity in the formation area 111a. The humidity measuring device 90 feeds back the obtained real-time humidity through an electrical signal or other signals.

[0212] By obtaining the real-time humidity in the formation area 111a and keeping the formation area 111a in a low-humidity environment through the dehumidification assembly, the possibility of water vapor entering the battery monomer 300 is reduced when the battery monomer 300 is formed, thereby improving the performance of the battery monomer 300.

[0213] In an embodiment, the box 11 comprises a box body 111 and a first door body 112. The box body 111 is provided with a formation area 111a, and the formation area 111a is open along one side in the third direction and forms a taking and placing opening 111b. The first door body 112 is arranged at the taking and placing opening 111b. The formation device 100 further comprises a transfer module. In response to the battery cell reaching the formation area, the transfer module comprises:

[0214] The control module controls the transfer module to transfer the battery cell 300 to the first door body 112 and controls the first door body 112 to open.

[0215] The control module controls the transfer module to transfer the battery cell through the first door body to the formation area and then leave the formation area, and then controls the first door body to close.

[0216] The type of the transfer module is not limited. For example, it can be a stacker.

[0217] A plurality of battery cells 300 can enter one formation area 111a to perform formation processing at the same time. For example, the plurality of battery cells 300 are carried by a carrying device 200. The carrying device 200 can be a tray. The tray is automatically sent to the front of the first door body 112 by the stacker, the first door body 112 is automatically opened, the stacker sends the tray into the formation area 111a and then leaves the formation area 111a, and the first door body 112 is closed again.

[0218] The battery cell 300 to be formed is transferred into the formation area 111a by the transfer module to perform formation processing. This process does not require manual operation, thereby reducing labor costs. At the same time, the automation degree of the battery cell 300 formation process is relatively high, which is conducive to improving the production efficiency of the battery cell 300.

[0219] In an embodiment, the formation method further comprises:

[0220] The transfer module moves to the first door body, and the control module controls the first door body to open.

[0221] The transfer module enters the formation area through the first door body and carries the formed battery cell out of the formation area.

[0222] The control module controls the first door body to close.

[0223] After the formation of the battery cell 300 is completed, the stacker reaches the first door body 112, the first door body 112 is automatically opened, the stacker takes out the tray from the formation area 111a, and the tray carries a plurality of formed battery cells 300 out of the formation area 111a, and then the first door body 112 is automatically closed.

[0224] The first door body 112 can automatically cooperate with the transfer module to transfer the completed battery monomer 300, and the process does not need manual operation, thereby reducing labor costs; at the same time, the automation degree of the battery monomer 300 formation process is relatively high, which is beneficial to improve the production efficiency of the battery monomer 300.

[0225] Further, the transfer module can also automatically take out the completed battery monomer 300 on the bearing device 200, and stack the completed battery monomer 300 to the designated position, thereby performing the formation process of the next batch of battery monomers 300.

[0226] In an embodiment, the formation method of the battery monomer 300 comprises:

[0227] The control module controls the transfer module to transfer the battery monomer to be formed to the first door body, and controls the first door body to open.

[0228] The control module controls the transfer module to transfer the battery monomer to the formation area through the first door body, and then controls the first door body to leave the formation area, and then controls the first door body to close.

[0229] The real-time temperature in the formation area is obtained by the temperature meter, if it is determined that the real-time temperature is lower than the formation temperature, the control module controls the air valve of the air supply assembly to open, and controls the air supply assembly to supply air to the formation area; if it is determined that the real-time temperature is higher than the formation temperature, the air valve of the air supply assembly is closed.

[0230] After confirming that the real-time temperature in the formation area meets the formation condition, the control module controls the charging device to charge the battery monomer to complete the formation.

[0231] The control module controls the first door body to open, and controls the transfer module to transfer the completed battery monomer out of the formation area, and then controls the first door body to close.

[0232] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A formation device characterized by comprising: The application relates to a battery cell formation unit. The battery cell formation unit comprises a box body, at least one cell formation area is arranged in the box body, and the cell formation areas are communicated with each other. An air exhaust assembly is arranged in communication with the cell formation area. An air supply assembly is arranged in communication with the cell formation area.

2. The formation apparatus of claim 1, wherein The box body is provided with a cell formation group, the cell formation group comprises two cell formation areas arranged along a first direction, the air supply assembly comprises an air supply main pipe and an air supply branch pipe, and one air supply main pipe is arranged on each side of the cell formation group along the first direction.

3. The formation device according to claim 2, characterized by The cell formation unit is further provided with a charging device arranged in the cell formation area, the charging device is configured to charge the battery cell, and the communication position of the air supply branch pipe and the cell formation area is directed to the top of the battery cell in the cell formation area.

4. The formation apparatus of claim 2, wherein The air supply assembly further comprises an air valve, and the air valve is arranged on each air supply branch pipe.

5. The formation apparatus of claim 2, wherein The air supply branch pipe comprises a first pipe segment and a second pipe segment which are communicated with each other, the first pipe segment is further communicated with the air supply main pipe, the second pipe segment is further communicated with the cell formation area, the cross section of the first pipe segment is square, and the cross section of the second pipe segment is in the shape of a flat mouth.

6. The formation apparatus of claim 2, wherein The number of the cell formation groups is plural, each cell formation group is arranged along a second direction, and the second direction intersects with the first direction. The number of the box bodies is plural, and at least part of the box bodies are arranged along the second direction.

7. The formation apparatus according to claim 2, wherein The number of the box bodies is plural, and at least part of the box bodies are arranged along the first direction.

8. The formation apparatus of claim 1, wherein, The cell formation unit is further provided with a first fan arranged at the top of the cell formation area and a second fan arranged at the bottom of the cell formation area, and the first fan and the second fan are configured to supply air to the region between the first fan and the second fan.

9. The formation apparatus of claim 1, wherein, The cell formation unit is further provided with a charging device arranged in the cell formation area, and the charging device is configured to charge the battery cell. The cell formation unit is further provided with a negative pressure module arranged in the cell formation area, and the negative pressure module is configured to vacuumize the battery cell.

10. The formation apparatus of claim 1, wherein, The cell formation unit is further provided with a thermometer, at least part of the thermometer is arranged in the cell formation area, and the thermometer is configured to obtain the temperature in the cell formation area. The cell formation unit is further provided with a hygrometer, at least part of the hygrometer is arranged in the cell formation area, and the hygrometer is configured to obtain the humidity in the cell formation area.

11. The formation apparatus of claim 1, wherein, The box body comprises a box body, a first door body and a second door body, the box body is provided with the cell formation area, and the cell formation area is open along the opposite sides of a third direction to form a taking and placing opening and a maintenance opening.

12. The formation apparatus of claim 11, wherein, The first door body is a folding door which can move along a direction parallel to the plane where the taking and placing opening is arranged. The second door body is a folding door which can move along a direction parallel to the plane where the maintenance opening is arranged. The second door body comprises at least one rotating door, one side of the rotating door being rotatably connected with the box body.

13. A method for forming a battery cell, applied to a formation device, the formation device comprising a control module, a charging device and a formation unit, the formation unit comprising a box provided with at least one formation area, characterized in that, The formation method comprises: In response to the battery monomer reaching the formation zone, the control module adjusts the real-time working condition in the formation zone so as to make the real-time working condition meet the formation working condition. The control module controls the charging device to charge the battery monomer so as to complete formation.

14. The chemical formation method according to claim 13, characterized in that: The real-time working condition comprises temperature and / or humidity.

15. The formation method of claim 13, wherein, The formation equipment comprises an air supply assembly in communication with at least one formation zone, the air supply assembly being configured to supply air to the formation zone, the control module adjusting the real-time working condition in the formation zone so as to make the real-time working condition meet the formation working condition, comprising: obtaining the real-time temperature in the formation zone; if it is determined that the real-time temperature is lower than the formation temperature, controlling the air valve of the air supply assembly to open; if it is determined that the real-time temperature is higher than the formation temperature, controlling the air valve of the air supply assembly to close.

16. The formation method of claim 13, wherein, The formation equipment comprises a dehumidification assembly, the control module adjusting the real-time working condition in the formation zone so as to make the real-time working condition meet the formation working condition, comprising: obtaining the real-time humidity in the formation zone; if it is determined that the real-time humidity is higher than the formation humidity, controlling the dehumidification assembly to open so as to dehumidify the formation zone.

17. The formation method of claim 13, wherein, The box body comprises a box body, a first door body, the box body being provided with the formation zone, and the formation zone being open along one side in a third direction and forming a taking and placing opening, the first door body being arranged at the taking and placing opening, the formation equipment further comprising a transfer module, the response to the battery monomer reaching the formation zone comprising: the control module controls the transfer module to transfer the battery monomer to the first door body and controls the first door body to open; the control module controls the transfer module to transfer the battery monomer into the formation zone through the first door body and then leave the formation zone, and then controls the first door body to close.

18. The formation method of claim 17, wherein, The formation method further comprises: the transfer module moves to the first door body, and the control module controls the first door body to open; the transfer module enters the formation zone through the first door body and carries the battery monomer which has completed formation to leave the formation zone; the control module controls the first door body to close.

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