Suction device, orthopedic apparatus and orthopedic method

Abstract

This application discloses a suction device, shaping equipment, and shaping method, relating to the field of battery processing technology. The suction device includes a main body, a contact member, and a driving member. The main body has a suction channel with a first opening and a second opening. The first opening communicates with the electrolyte injection hole of a battery cell, and the second opening communicates with a negative pressure generating device. The contact member is movably disposed within the suction channel, having a blocking position and a recusal position within its travel range. In the blocking position, the contact member abuts against a blocking member blocking the electrolyte injection hole. In the recusal position, the contact member recuses from the blocking member, allowing the blocking member to move into the suction channel. The driving member is configured to at least drive the contact member from the recusal position to the blocking position. The technical solution provided by this application improves the problem of electrolyte leakage during the recycling and shaping process of current battery cells.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, and in particular to a suction device, shaping equipment and shaping method. Background Technology

[0002] Currently, after long-term charge-discharge cycles, battery cells often bulge. Therefore, new energy battery companies generally need to reshape and vent the battery cells during the recycling and reuse process. However, during the current recycling and reshaping process, the electrolyte inside the battery cells is prone to overflow, posing a potential safety hazard. Summary of the Invention

[0003] The main purpose of this application is to provide a suction device, shaping equipment and shaping method, which aims to improve the problem of electrolyte leakage during the recycling and shaping of battery cells.

[0004] Firstly, the suction device proposed in this application is used to assist the liquid injection hole of a battery cell in venting air, and the suction device includes:

[0005] The main body has a suction channel, which has a first opening and a second opening. The first opening is used to communicate with the liquid injection hole of the battery cell, and the second opening is used to communicate with a negative pressure generating device.

[0006] A contact member is movably disposed within the suction channel. Within its travel range, the contact member has a blocking position and a yielding position. In the blocking position, the contact member abuts against a sealing member blocking the injection hole. In the yielding position, the contact member yields to the sealing member, allowing the sealing member to move into the suction channel, and the injection hole is in communication with the first opening.

[0007] A drive member connected to the abutment member, the drive member being configured to at least drive the abutment member from the avoidance position to the blocking position.

[0008] In the technical solution provided in this application, after the first opening of the main body is connected to the liquid injection hole of the battery cell, the abutment in the suction channel can move to the sealing position, thereby abutting against the sealing member sealing the liquid injection hole. During the shaping process of the battery cell, the internal pressure is greater than the sealing force of the sealing member, and the sealing member is pushed away from the liquid injection hole. The abutment, in order to cooperate with the sealing member, can reach the avoidance position. At this time, the liquid injection hole and the first opening of the suction channel are in a connected state. Under the suction action of the negative pressure generating device, the gas mixed with electrolyte can be collected through the suction channel. After the battery cell is shaped, the driving member can drive the abutment to move back to the sealing position from the avoidance position, thereby resealing the sealing member in the liquid injection hole of the battery cell. During the subsequent transportation of the battery cell, due to the presence of the sealing member, the situation of electrolyte overflowing outward through the liquid injection hole can be fundamentally improved. The appearance of the battery cell and the welding efficiency of the subsequent sealing nails can be guaranteed, and the probability of fire or other related accidents is significantly reduced.

[0009] In some implementations, the orientation of the first opening is defined as a first direction;

[0010] The suction channel includes a first channel segment, which communicates with the first opening and extends along the first direction;

[0011] The abutment is movably disposed in the first channel segment along the first direction, so that within its movement stroke it has a blocking position close to the first opening and a avoidance position away from the first opening.

[0012] In the above technical solution, the first channel section of the suction channel extends along the first direction, and the abutting member is movably disposed in the first channel section along the first direction. This allows the abutting member to directly act on the sealing member within the movement stroke in the first direction. The transmission process of the abutting force on the abutting member is more direct, and the abutting effect is more sufficient. At the same time, the abutting member movably disposed along the first direction occupies less space in the suction channel, and the first channel section extending along the first direction is also easier to process and form.

[0013] In some embodiments, the driving member includes a mounting portion and a floating portion spaced apart along the first direction, and an elastic buffer is provided between the floating portion and the mounting portion;

[0014] The abutting member is connected to the floating part.

[0015] In the above technical solution, the abutment is connected to the floating part, and the floating part and the mounting part are connected by an elastic buffer. When the abutment is in the blocking position, the elastic buffer is in the initial state (this initial state can be a naturally stretched state or a compressed state with a certain amount of compression). During the shaping process, the blocking part squeezes the abutment, causing the abutment to move from the blocking position to the avoidance position, thereby causing the elastic buffer to be compressed and store elastic potential energy. The stored elastic potential energy can be released after the shaping is completed, thereby re-sealing the blocking part in the liquid injection hole of the battery cell through the abutment. The form of using the elastic buffer to drive the abutment from the avoidance position to the blocking position is relatively simple, and the manufacturing difficulty of the driving part is low.

[0016] In some embodiments, the mounting portion is movably disposed along the first direction.

[0017] In the above technical solution, based on the connection between the mounting part and the floating part through an elastic buffer, the mounting part is also limited to move along the first direction. After the battery cell is shaped and the abutting part re-seals the sealing part to the liquid injection hole of the battery cell, the movement of the mounting part along the first direction toward the battery cell can apply a greater abutting force to the sealing part, thereby ensuring that the sealing part tightly seals the liquid injection hole.

[0018] In some embodiments, one of the mounting portion and the floating portion is provided with a stop head that extends along the first direction, and when the elastic buffer is in the initial state, the other of the mounting portion and the floating portion is spaced apart from the stop head in the first direction.

[0019] For ease of explanation, the following analysis is based on the scheme where the top abutment is located on the floating part and spaced apart from the mounting part. When the elastic buffer is in its initial state, the top abutment is spaced apart from the mounting part, allowing the floating part to move towards the mounting part. After the battery cell is shaped, the mounting part actively moves towards the floating part and rigidly abuts against the top abutment. The mounting part can directly transmit the abutment force to the floating part using the top abutment. Obviously, the rigid abutment method can apply a greater abutment force to the sealing part, thereby further improving the sealing effect of the sealing part.

[0020] In some embodiments, the abutment top is disposed on the floating part;

[0021] The mounting portion has a mating groove extending toward the floating portion, and the abutment top is movably mounted in the mating groove along the first direction.

[0022] In the above technical solution, by setting a mating groove on the mounting part and movably mounting the top part in the mating groove along the first direction, the floating part can be guided relative to the mounting part, thereby ensuring the relative positional accuracy between the floating part and the mounting part and ensuring that the elastic buffer accurately and elastically resets along the first direction.

[0023] In some embodiments, the main body is further provided with a connecting hole, which is connected to the other end of the first channel segment and is disposed opposite to the first opening in the first direction;

[0024] The abutment is provided corresponding to the communicating hole and is connected to the driving member.

[0025] In the above technical solution, since the first channel segment extends along the first direction, a connecting hole is provided at the other end of the main body relative to the first opening. The driving component can be directly connected to the abutting component through the connecting hole. Under the premise that the driving component drives the abutting component to move, the opening of the connecting hole has little impact on the negative pressure loss in the first channel segment.

[0026] In some embodiments, the suction channel further includes a second channel segment extending along a second direction, one end of the second channel segment being connected to the first channel segment, and the other end of the second channel segment being connected to the second opening;

[0027] The first direction and the second direction are intersecting.

[0028] In the above technical solution, extending the second channel segment of the suction channel along the second direction helps to reduce the overall space occupation requirement of the main body in the first direction.

[0029] In some embodiments, the suction device further includes a limiting sleeve, at least a portion of which is disposed within the first channel segment and at least sleeved on the end of the abutment facing the first opening, the limiting sleeve being used for the sealing member to extend into.

[0030] In the above technical solution, a limiting sleeve is used to fit the end of the abutment member facing the first opening. During the movement of the abutment member from the blocking position to the avoidance position, the blocking member can extend into the limiting sleeve. The limiting sleeve can limit the state of the blocking member, thereby preventing the blocking member from being pushed out of the injection hole and detaching from the abutment member, which would lead to the failure of back-blocking. The setting of the limiting sleeve greatly improves the reliability of the suction device.

[0031] In some embodiments, the wall of the limiting sleeve is provided with multiple vents, and the vents are connected to the inner cavity of the limiting sleeve and the first channel segment.

[0032] In the above technical solution, multiple venting sections are provided on the wall of the limiting sleeve. Gas discharged into the limiting sleeve can be discharged into the first channel section through the venting sections. By increasing the exhaust path, the adverse effect of the limiting sleeve on exhaust is reduced.

[0033] In some embodiments, the venting section includes a venting groove disposed on the end face of the limiting sleeve facing the first opening.

[0034] In the above technical solution, the end face of the limiting sleeve facing the first opening is the part closest to the injection hole. Setting a vent groove here can promptly guide the gas discharged from the injection hole into the first channel section.

[0035] In some embodiments, there is an air gap between the abutment and the inner wall of the limiting sleeve;

[0036] The ventilation section includes a ventilation hole, which is connected to the ventilation gap and the first channel section.

[0037] In the above technical solution, a vent hole is provided to connect the vent gap and the first channel section. The gas and electrolyte entering the vent gap can be discharged outward through the vent hole, preventing electrolyte residue in the limiting sleeve and blockage of the limiting sleeve.

[0038] In some embodiments, a plurality of the vents are distributed along the circumference and / or the first direction of the limiting sleeve.

[0039] In the above technical solution, multiple ventilation sections are distributed along the circumference and first direction of the limiting sleeve, which can reduce the weakening of the structural strength of the limiting sleeve by the ventilation section. The thickness of the limiting sleeve can be reduced according to the actual exhaust situation.

[0040] In some embodiments, the main body is further provided with a connecting hole, which is connected to the other end of the first channel segment and is disposed opposite to the first opening in the first direction;

[0041] The limiting sleeve includes a first sleeve section and a second sleeve section. The first sleeve section is detachably disposed in the communicating hole, and the second sleeve section is disposed within the first channel section.

[0042] The inner wall of the first channel section and the pipe wall of the second sleeve section are spaced apart.

[0043] In the above technical solution, the limiting sleeve is detachably connected to the main body through the connecting hole of its first sleeve section. During the maintenance of the suction device, the limiting sleeve can be removed from the main body to facilitate cleaning or replacement of the limiting sleeve.

[0044] In some embodiments, the main body is provided with an annular groove surrounding the first opening, and a sealing gasket is provided in the annular groove. The sealing gasket protrudes from the annular groove and is used to abut against the end cap of the battery cell.

[0045] In the above technical solution, an annular groove is provided at one end of the main body where the first opening is located. The annular groove can provide a base for limiting the installation of the sealing gasket. On this basis, the sealing gasket protrudes from the annular groove. During the process of the first opening of the main body connecting to the liquid injection hole, the sealing gasket can abut against the end cap of the battery cell, thereby creating a relatively sealed environment to cooperate with the suction channel for negative pressure suction and improve the suction effect.

[0046] In some embodiments, the suction device further includes a cleaning mechanism having a spray head configured to communicate with the first opening.

[0047] In the above technical solution, a spray head can be used to spray cleaning fluid into the suction channel. The residual electrolyte in the suction channel can be cleaned and carried away by the cleaning fluid, which plays a role in maintaining the suction channel and also prevents the electrolyte from corroding the suction channel.

[0048] Secondly, this application also proposes a shaping device, including the aforementioned suction device.

[0049] In some embodiments, the shaping equipment has a shaping station for placing individual battery cells;

[0050] The shaping equipment also includes a shaping device, and the shaping device and the suction device are respectively set up corresponding to the shaping station;

[0051] The shaping device is used to squeeze the outer casing of the battery cell to restore the shape of the battery cell, and the suction device is used to assist the filling hole of the battery cell in venting air when the shaping device squeezes the outer casing of the battery cell.

[0052] In the above technical solution, by setting the shaping device and the suction device at corresponding shaping stations, the automated shaping and air extraction operations of battery cells can be realized.

[0053] In some embodiments, the shaping device includes two shaping sections arranged opposite each other, which are movable toward or away from each other to compress two opposite sides of the housing of the battery cell.

[0054] In the above technical solution, by moving the two shaping parts away from each other, space can be provided for the placement of the battery cell in the shaping station. By moving the two shaping parts closer to each other, a squeezing force can be applied to the two opposite sides of the battery cell, thereby restoring its flat shape.

[0055] Thirdly, this application also proposes a shaping method based on the aforementioned shaping device, the shaping method comprising the following steps:

[0056] Install a sealing component into the electrolyte filling hole of the battery cell;

[0057] The battery cell is placed in the shaping station of the shaping equipment so that the liquid injection hole of the battery cell is connected to the first opening of the suction device, and the sealing member is abutted by the abutment of the suction device.

[0058] The shaping device is used to shape the casing of the battery cell, and the suction device is used to suction the gas and electrolyte overflowing from the injection hole of the battery cell.

[0059] In the above technical solution, by installing a sealing component into the liquid injection hole of the battery cell in advance, a weak area can be formed in the outer shell of the battery cell. During the subsequent shaping process of the battery cell using a shaping device, the liquid injection hole can guide the gas inside the battery cell to be discharged outward, and then be sucked up and collected by the suction device. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0061] Figure 1 A schematic diagram of an embodiment of the suction device provided in this application;

[0062] Figure 2 for Figure 1 A side view of the central suction device;

[0063] Figure 3 for Figure 2 Schematic diagram of the structure of section AA;

[0064] Figure 4 for Figure 3 A magnified structural diagram of part B in the middle;

[0065] Figure 5 for Figure 1A partial structural diagram of the drive component;

[0066] Figure 6 for Figure 5 Top view of the drive component;

[0067] Figure 7 for Figure 6 Schematic diagram of the structure of the mid-section CC;

[0068] Figure 8 A simplified diagram illustrating the working principle of the suction device provided in this application.

[0069] Explanation of icon numbers:

[0070] 100. Suction device;

[0071] 1. Main body; 11. Suction channel; 11a. First opening; 11b. Second opening; 111. First channel section; 112. Second channel section; 12. Connecting hole; 13. Annular groove; 2. Abutting part; 3. Limiting sleeve; 3a. First sleeve section; 3b. Second sleeve section; 31. Ventilation part; 311. Ventilation hole; 312. Ventilation groove; 32. Ventilation gap; 4. Driving component; 41. Mounting part; 411. Mating groove; 4111. Mating protrusion; 42. Floating part; 43. Elastic buffer; 44. Top; 441. Limiting protrusion; 45. Drive motor; 46. Screw drive assembly; 5. Sealing gasket;

[0072] 200. Shaping device; 210. Shaping section;

[0073] 300. Battery cell; 310. End cap; 310a. Fluid injection hole; 320. Sealing component;

[0074] X, the first direction; Y, the second direction.

[0075] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0076] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0078] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0079] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0080] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0081] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0082] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0083] Currently, after long-term charge-discharge cycles, battery cells often bulge. Therefore, in the process of recycling and reusing battery cells, new energy battery companies generally need to reshape and vent the battery cells. During the reshaping process, the bulging outer shell of the battery cell needs to be squeezed to restore its original shape. At the same time, the electrolyte inside the battery cell usually overflows out through the injection hole on the outer shell along with the gas. On the one hand, the overflowing electrolyte will affect the appearance of the battery cell and the subsequent sealing nail welding efficiency. On the other hand, if a large amount of electrolyte overflow is not properly controlled, it can easily cause fires or other problems.

[0084] To prevent electrolyte leakage, the current solution involves using a suction pipe to draw out the electrolyte from the filling hole of the battery cell during the compression of the bulging casing. This ensures that any electrolyte overflowing during the process is collected. While this solution improves the electrolyte leakage problem during the shaping process, the filling hole remains open during the transport of the battery cell after shaping, failing to seal the remaining electrolyte inside. The bumpy transport process can still lead to electrolyte leakage. Therefore, it can be concluded that the current solution is flawed and cannot fundamentally improve the electrolyte leakage problem.

[0085] Analysis shows that the root cause of electrolyte overflow is the failure to promptly seal the electrolyte injection holes of individual battery cells. There are several ways to solve this problem. For example, after shaping the battery cells, seal the injection holes with adhesive pins immediately. Another approach is to use a higher-precision transport device to reduce the occurrence of bumps. However, the latter solution involves a significant increase in production costs and is more difficult to implement. The former solution is more feasible. In practice, specialized equipment can be used to install adhesive pins on the injection holes. However, considering the space requirements of specialized equipment on the battery recycling line and the significant modifications to the existing shaping equipment's spatial layout, it is advisable to start with the existing equipment, making groundbreaking improvements to the structure of the suction pipe and refining the current shaping process.

[0086] In view of this, this application provides a suction device, which provides an abutment inside the suction channel and is movably disposed. Based on this, the liquid injection hole of the battery cell is pre-sealed by installing a sealing member before shaping. During the shaping process, the abutment moves to abut against the sealing member and continuously applies abutment force to the sealing member, so that the sealing member can re-seal the liquid injection hole after the battery cell is shaped. This suction device can at least improve the problem that the electrolyte inside the battery cell is prone to overflow during the current recycling and shaping process.

[0087] To facilitate understanding of the suction device provided in this application, the following description is provided in conjunction with the accompanying drawings. Figure 1 A schematic diagram of an embodiment of the suction device provided in this application; Figure 2 for Figure 1 A side view of the central suction device; Figure 3 for Figure 2 Schematic diagram of the structure of section AA; Figure 4 for Figure 3 A magnified structural diagram of part B in the middle; Figure 5 for Figure 1 A partial structural diagram of the drive component; Figure 6 for Figure 5 Top view of the drive component; Figure 7 for Figure 6 Schematic diagram of the structure of the mid-section CC; Figure 8 A simplified diagram illustrating the working principle of the suction device provided in this application.

[0088] Please see Figures 2 to 4 In one embodiment of this application, the suction device 100 is used to assist the battery cell 300 in venting the liquid injection hole 310a. The suction device 100 includes a main body 1, a contact member 2, and a driving member 4. The main body 1 has a suction channel 11, which has a first opening 11a and a second opening 11b. The first opening 11a is used to communicate with the liquid injection hole 310a of the battery cell 300, and the second opening 11b is used to communicate with a negative pressure generating device. The contact member 2 is movably disposed in the suction channel 11. 1. The abutment 2 has a blocking position and a clearance position within its active stroke. In the blocking position, the abutment 2 abuts against the blocking member 320 that blocks the injection hole 310a. In the clearance position, the abutment 2 clearances the blocking member 320 so that the blocking member 320 can move into the air extraction channel and the injection hole 310a is in communication with the first opening 11a. The drive member 4 is connected to the abutment 2 and is configured to at least drive the abutment 2 from the clearance position to the blocking position.

[0089] "Main Body 1" refers to the main structure in the suction device 100, which provides a suction channel 11. The first opening 11a of the suction channel 11 connects to the electrolyte injection port 310a of the battery cell 300, and the second opening 11b connects to the negative pressure generating device. During the shaping process, the electrolyte and gas overflowing from the electrolyte injection port 310a on the end cap 310 of the battery cell 300 pass through the suction channel 11 under negative pressure and are ultimately collected by the negative pressure generating device. The main body 1 can be fixedly installed. Alternatively, it can be configured to be movable. In the case of a fixed configuration, the connection between the liquid injection hole 310a of the battery cell 300 and the first opening 11a of the main body 1 can be achieved by the battery cell 300 actively moving closer to the main body 1. In the case of a movable configuration, the connection between the liquid injection hole 310a of the battery cell 300 and the first opening 11a of the main body 1 can be achieved by a driving component moving the main body 1 closer to the battery cell 300. The embodiments of this application do not limit the specific connection process between the first opening 11a and the liquid injection hole 310a, or the related structures involved.

[0090] The extension direction of the "suction channel 11" within the main body 1 can be varied. For example, the suction channel 11 can extend in a spiral or in a straight line. However, regardless of its extension direction, sufficient space should be provided for the installation of the "abutment member 2". The main feature of the "abutment member 2" is its mobility. To facilitate understanding of the specific working principle of the abutment member 2, the following will be combined with... Figure 8 Explanation: Refer to Figure 8 In Figure (a), after the first opening 11a of the suction channel 11 is connected to the liquid injection hole 310a of the battery cell 300, the abutment 2 can reach the sealing position within its active stroke and abut against the sealing member 320. At this time, the outer shell of the battery cell 300 is in a bulging state, and the shaping operation of the battery cell 300 can begin; see reference. Figure 8 In Figure (b), at the beginning of the shaping stage, the outer surface of the battery cell 300 is compressed and the internal space is reduced, resulting in increased pressure. When the pressure rises to a certain level, the sealing member 320 is forced open by the air pressure into the suction channel, thereby detaching from the injection hole 310a. The abutment member 2 can also move from the sealing position to the avoidance position, thereby avoiding the movement of the sealing member 320 away from the injection hole 310a. During the stage of continuous compression of the battery cell 300, the gas mixed with electrolyte continuously impacts the sealing member 320, thereby keeping it in the position detached from the injection hole 310a. At this time, the injection hole 310a of the battery cell 300 is in communication with the first opening 11a. (Refer to Figure 1) Figure 8As shown in Figure (c), during the stage when the battery cell 300 has completed its shaping, the impact force of the gas applied to the sealing member 320 is less than the abutting force applied to the sealing member 320 by the abutting member 2. The abutting member 2 can move back to the sealing position from the avoidance position, and the sealing member 320 can also move back to the position of sealing the injection hole 310a under the abutting action of the abutting member 2.

[0091] Regarding the movement mode of the abutment 2, there are multiple options. The abutment 2 can be an abutment pressure plate. The first end of the abutment pressure plate is rotatably set, and the second end of the abutment pressure plate is used to abut and press the sealing member 320. Within the rotation stroke of the first end of the abutment pressure plate, the second end of the abutment pressure plate can abut against the sealing member 320 at different heights, thereby reaching the above-mentioned avoidance position and sealing position. This embodiment does not limit the specific structural form and movement mode of the abutment 2.

[0092] The function of the "driving component 4" is to provide a power source for the abutting component 2. It can at least drive the abutting component 2 and drive the abutting component 2 to move from the avoidance position to the blocking position. The structural form of the driving component 4 is directly related to the movement form of the abutting component 2. For the above-mentioned abutting pressure plate structure, the driving component 4 can be a driving motor. The output shaft of the driving motor is directly or indirectly connected to the first end of the abutting pressure plate to complete the output of rotational driving power. This embodiment does not limit the specific structural form of the driving component 4.

[0093] In the technical solution provided in this application, after the first opening 11a of the main body 1 is connected to the liquid injection hole 310a of the battery cell 300, the abutment 2 in the suction channel 11 can move to the blocking position, thereby abutting against the blocking member 320 blocking the liquid injection hole 310a. During the shaping process of the battery cell 300, the internal pressure is greater than the blocking force of the blocking member 320, and the blocking member 320 is pushed away from the liquid injection hole 310a. The abutment 2, in order to cooperate with the blocking member 320, can reach the avoidance position. At this time, the liquid injection hole 310a and the first opening 11a of the suction channel 11 are in a connected state. Under the suction of the negative pressure generating device... Under the suction effect, the gas mixed with electrolyte can be collected through the suction channel 11. After the battery cell 300 is shaped, the driving component can drive the abutment 2 to move from the avoidance position back to the sealing position, thereby resealing the sealing component 320 in the injection hole 310a of the battery cell 300. During the subsequent transportation of the battery cell 300, due to the presence of the sealing component 320, the leakage of electrolyte from the battery cell 300 through the injection hole 310a can be fundamentally improved. The appearance of the battery cell 300 and the welding efficiency of the subsequent sealing nails can be guaranteed, and the probability of fire or other related accidents is significantly reduced.

[0094] Please see Figure 4In some embodiments, the orientation of the first opening 11a is defined as the first direction X; the suction channel 11 includes a first channel segment 111, which communicates with the first opening 11a and extends along the first direction X; the abutment 2 is movably disposed in the first channel segment 111 along the first direction X, so as to have a blocking position close to the first opening 11a and a avoidance position away from the first opening 11a within its active stroke.

[0095] It should be noted that "the first channel segment 111 is connected to the first opening 11a" can also be understood as the first opening 11a being directly formed at the end of the first channel segment 111. Since the first opening 11a faces the first direction, and the first channel segment 111 also extends along the first direction X, the first opening 11a can be understood as being located at one end of the main body 1 in the first direction X. Given that the first opening 11a is also connected to the liquid injection hole 310a of the battery cell 300, it can be understood that the first direction X is the same as the direction of movement of the sealing member 320.

[0096] In the above technical solution, the first channel segment 111 of the suction channel 11 extends along the first direction X, and the abutting member 2 is movably disposed in the first channel segment 111 along the first direction X. This allows the abutting member 2 to directly act on the sealing member 320 within the movement stroke of the first direction X. The transmission process of the abutting force on the abutting member 2 is more direct, and the abutting effect is more sufficient. At the same time, the abutting member 2, which is movably disposed along the first direction X, occupies less space in the suction channel 11, and the first channel segment 111 extending along the first direction X is also easier to process and form.

[0097] Please see Figure 1 and Figure 5 In some embodiments, the driving member 4 includes a mounting portion 41 and a floating portion 42 spaced apart along a first direction X, and an elastic buffer member 43 is provided between the floating portion 42 and the mounting portion 41; wherein, the abutment member 2 is connected to the floating portion 42.

[0098] It should be noted that the mounting part 41 and the floating part 42 are movably arranged along the first direction X and connected to each other by an elastic buffer 43. The "elastic buffer 43" is characterized by being able to elastically connect the mounting part 41 and the floating part 42 and having a buffering effect. There are various types of this type of elastic buffer 43, such as elastic rubber. Under the elastic connection of the elastic buffer 43, the floating part 42 can at least float back and forth relative to the mounting part 41 along the first direction X.

[0099] In the above technical solution, the abutment 2 is connected to the floating part 42, and the floating part 42 is connected to the mounting part 41 through the elastic buffer 43. When the abutment 2 is in the blocking position, the elastic buffer 43 is in the initial state (this initial state can be a naturally stretched state or a compressed state with a certain amount of compression). During the shaping process, the blocking part 320 squeezes the abutment 2, causing the abutment 2 to move from the blocking position to the avoidance position, thereby causing the elastic buffer 43 to be compressed by force and store elastic potential energy. The stored elastic potential energy can be released after the battery cell 300 is shaped, thereby re-blocking the blocking part 320 in the liquid injection hole 310a of the battery cell 300 through the abutment 2. The form of using the elastic buffer 43 to drive the abutment 2 to reset from the avoidance position to the blocking position is relatively simple, and the manufacturing difficulty of the driving part 4 is low.

[0100] Specifically, the elastic buffer 43 is a spring. Compared with elastic rubber, the force a spring can withstand is proportional to the deformation it produces. The deformation of a spring is predictable, making it easy to calculate and control accurately. At the same time, compared with elastic rubber, a spring is less prone to stress relaxation and can maintain preload and state for a long time.

[0101] In some embodiments, the mounting portion 41 is movably disposed along the first direction X.

[0102] There are various structural forms of the mounting part 41. For example, the mounting part 41 can be set on the piston that moves in and out along the first direction X in the drive cylinder, or it can be set on the push rod of the push rod motor. In this embodiment, the power source for the movement of the mounting part 41 along the first direction X is not limited.

[0103] In the above technical solution, based on the connection between the mounting part 41 and the floating part 42 through the elastic buffer 43, the mounting part 41 is also limited to move along the first direction X. After the battery cell 300 is shaped and the abutting part 2 re-seals the sealing part 320 in the liquid injection hole 310a of the battery cell 300, the movement of the mounting part 41 towards the battery cell 300 along the first direction X can apply a greater abutting force to the sealing part 320, thereby ensuring that the sealing part 320 tightly seals the liquid injection hole 310a.

[0104] Furthermore, since the movement of the mounting part 41 along the first direction X can serve as the main source of force for the abutting part 2 to press against the sealing part 320, the elastic buffer part 43 can be designed to be of a smaller size. That is, the abutting force exerted by the abutting part 2 on the sealing part 320 when it is in the sealing position is smaller. After the sealing part 320 is punched out of the injection hole 310a, more gas can be released, so that the inner wall pressure of the battery cell 300 after shaping is close to the atmospheric pressure.

[0105] In some embodiments, one of the mounting portion 41 and the floating portion 42 is provided with abutment 44, which extends along a first direction X, and when the elastic buffer 43 is in its initial state, the other of the mounting portion 41 and the floating portion 42 is spaced apart from the abutment 44 in the first direction X.

[0106] It should be noted that the top abutment 44 can be installed on the mounting part 41, and when the elastic buffer 43 is in the initial state, the top abutment 44 and the floating part 42 are spaced apart. Alternatively, the top abutment 44 can be installed on the floating part 42, and when the elastic buffer 43 is in the initial state, the top abutment 44 and the mounting part 41 are spaced apart.

[0107] The term "abutment 44" is spaced apart from "the other of the mounting part 41 and the floating part 42" because the abutment 44 is located at its end face in the first direction X, i.e., the end face of the abutment 44 used for abutting, is spaced apart from the other of the mounting part 41 and the floating part 42. For example... Figure 7 As shown, the top 44 is mounted on the first end of the floating part 42 in the first direction X. Although the second end of the top 44 in the first direction X is embedded in the mounting part 41, the end face of the second end of the top 44 is still spaced apart from the corresponding part of the mounting part 41 in the first direction X.

[0108] For ease of explanation, the following analysis is based on the scheme where the top abutment 44 is disposed on the floating part 42 and spaced apart from the mounting part 41. When the elastic buffer 43 is in the initial state, the top abutment 44 and the mounting part 41 are spaced apart, so that the floating part 42 has a travel distance toward the mounting part 41. After the battery cell 300 is shaped, the mounting part 41 actively moves toward the floating part 42 and rigidly abuts against the top abutment 44. The mounting part 41 can directly transmit the abutting force to the floating part 42 using the top abutment 44. Obviously, the rigid abutting method can apply a greater abutting force to the sealing member 320, thereby further improving the sealing effect of the sealing member 320.

[0109] In some embodiments, the top abutment 44 is disposed on the floating portion 42; the mounting portion 41 has a mating groove 411 extending toward the floating portion 42, and the top abutment 44 is movably mounted in the mating groove 411 along the first direction X.

[0110] There are several ways to movably install the mating groove 411 and the abutment 44. For example, the abutment 44 can be inserted into the mating groove 411, and the mating groove 411 has a certain depth. By telescopically installing the abutment 44 into the mating groove 411, the mating groove 411 can be guided and engaged with the abutment 44. Alternatively, the opening of the mating groove 411 can face the second direction Y and be arranged through the first direction X. The abutment 44 has a guide slider, which is movably installed in the mating groove 411 along the first direction X, which can also be used to guide and engage the mating groove 411 with the abutment 44.

[0111] In the above technical solution, by providing a mating groove 411 on the mounting part 41 and movably mounting the top 44 in the mating groove 411 along the first direction X, the floating part 42 can be guided relative to the mounting part 41, thereby ensuring the relative positional accuracy between the floating part 42 and the mounting part 41 and ensuring that the elastic buffer 43 is accurately and elastically reset along the first direction X.

[0112] Specifically, please refer to Figure 7 (exist Figure 7 In order to facilitate the display of the mating protrusion 4111 of the mating groove 411, the right abutment 44 is partially hidden. The mating protrusion 4111 is provided on the inner side of the groove of the mating groove 411. The end of the abutment 44 located in the mating groove 411 is provided with a limiting protrusion 441. When the elastic buffer 43 is in the initial state, the abutment 44 and the bottom wall of the mating groove 411 are spaced apart, and the mating protrusion 4111 supports the limiting protrusion 441. At this time, the overall weight of the movable structure composed of the floating part 42, the abutment 44, and the abutment 2 is transmitted to the mounting part 41 through the limiting protrusion 441 and the mating protrusion 4111, reducing the force on the elastic buffer 43.

[0113] For the specific structural form of the drive section of drive component 4, please refer to [link / reference]. Figure 1 and Figure 2 The driving component 4 includes a drive motor 45 and a lead screw transmission assembly 46. The lead screw transmission assembly 46 includes a lead screw and a lead sleeve that cooperate with each other. The output shaft of the drive motor 45 is connected to the lead screw. The abutment 2 is installed on the lead sleeve. Specifically, the abutment 2 is installed on the lead sleeve through the mounting part 41.

[0114] The following is in conjunction with the appendix Figure 4 To illustrate, in some embodiments, the main body 1 is further provided with a connecting hole 12, which is connected to the other end of the first channel segment 111 and is disposed opposite to the first opening 11a in the first direction X; the abutment member 2 is disposed corresponding to the connecting hole 12 and is connected to the driving member 4.

[0115] It should be noted that "the abutment 2 is provided corresponding to the connecting hole 12 and connected to the driving member 4" can mean that the abutment 2 extends out of the connecting hole or that the driving member 4 extends into the connecting hole. Specifically, the abutment 2 extends along the first direction X and has a connecting end that extends out of the connecting hole 12, and the driving member 4 is connected to the connecting end of the abutment 2.

[0116] In the above technical solution, since the first channel segment 111 extends along the first direction X, a connecting hole 12 is provided at the other end of the main body 1 relative to the first opening 11a. The driving member 4 can be directly connected to the abutting member 2 through the connecting hole 12. Under the premise that the driving member 4 drives the abutting member 2 to move, the opening of the connecting hole 12 has little impact on the negative pressure loss in the first channel segment 111.

[0117] In some embodiments, the suction channel 11 further includes a second channel segment 112 extending along the second direction Y, one end of the second channel segment 112 being connected to the first channel segment 111, and the other end of the second channel segment 112 being connected to the second opening 11b; wherein the first direction X and the second direction Y are intersected.

[0118] It should be noted that "the first direction X and the second direction Y intersect" can be understood as the angle between the first direction X and the second direction Y being any value between 0° and 180° (excluding the values ​​at 0° and 180°). Normally, the angle between the first direction X and the second direction Y is 90°, that is, the first direction X and the second direction Y are set perpendicular to each other. Since the first direction X is the same as the direction of movement of the sealing component 320, that is, the same as the height direction of the battery cell 300, it can be understood that the main body 1 is at the high position of the first direction X.

[0119] Since the first channel segment 111 extends along the first direction X as a necessary condition for the abutment 2 to move along the first direction X, the existence of the first channel segment 111 makes it difficult for the main body 1 to occupy space in the first direction X. In view of this, in the above technical solution, the second channel segment 112 of the suction channel 11 is extended along the second direction Y, which is beneficial to reduce the overall space occupation requirement of the main body 1 in the first direction X.

[0120] In some embodiments, the suction device 100 further includes a limiting sleeve 3, at least a portion of which is disposed within the first channel segment 111 and at least sleeved on the end of the abutment 2 facing the first opening 11a. The limiting sleeve 3 is used for the sealing member 320 to extend into.

[0121] Based on the movable arrangement of the abutment 2 along the first direction X, "the limiting sleeve 3 can at least be fitted onto the end of the abutment 2 facing the first opening 11a" can be understood as the inner cavity of the limiting sleeve 3 extending along the first direction X; since "the limiting sleeve 3 is used for the sealing member 320 to extend into", the cross-sectional dimensions of the inner cavity of the limiting sleeve 3 should at least be adapted to the shape of the sealing member 320; "the limiting sleeve 3" should at least be fixed in the first channel section 111, and there are various specific forms of its fixing, for example, the side wall of the limiting sleeve 3 is connected to the inner wall of the first channel through a rib structure, which is not limited in this embodiment.

[0122] In the above technical solution, the limiting sleeve 3 is sleeved on the end of the abutment 2 facing the first opening 11a. During the movement of the abutment 2 from the blocking position to the avoidance position, the blocking member 320 can extend into the limiting sleeve 3. The limiting sleeve 3 can limit the state of the blocking member 320, thereby preventing the blocking member 320 from being pushed out of the injection hole 310a and detaching from the abutment 2, resulting in the failure of back-blocking. The setting of the limiting sleeve 3 greatly improves the reliability of the suction device 100.

[0123] In some embodiments, the wall of the limiting sleeve 3 is provided with a plurality of venting sections 31, and the venting sections 31 are connected to the inner cavity of the limiting sleeve 3 and the first channel section 111.

[0124] Considering that the limiting sleeve 3 needs to be inserted into the sealing member 320, it means that the end of the limiting sleeve 3 is relatively close to the end cap 310 of the battery cell 300. In the above technical solution, multiple venting parts 31 are provided on the tube wall of the limiting sleeve 3. The gas discharged into the limiting sleeve 3 can be discharged into the first channel section 111 through the venting parts 31. The adverse effect of the setting of the limiting sleeve 3 on the exhaust is reduced by increasing the exhaust path.

[0125] In some embodiments, the ventilation section 31 includes a ventilation groove 312, which is disposed on the end face of the limiting sleeve 3 facing the first opening 11a.

[0126] It should be noted that the function of the venting groove 312 is to connect the inner sidewall and the outer sidewall of the limiting sleeve 3, thereby connecting the inner cavity of the limiting sleeve 3 with the first channel section 111. This embodiment does not limit the specific shape and extension direction of the venting groove 312. Specifically, the cross-section of the limiting sleeve 3 is an annular cross-section, and the venting groove 312 can penetrate its sidewall radially along the limiting sleeve 3.

[0127] In the above technical solution, the end face of the limiting sleeve 3 facing the first opening 11a is the part closest to the injection hole 310a. A venting groove 312 is set here so that the gas discharged from the injection hole 310a can be introduced into the first channel section 111 in a timely manner.

[0128] In some embodiments, there is a ventilation gap 32 between the abutment 2 and the inner wall of the limiting sleeve 3; wherein, the ventilation part 31 includes a ventilation hole 311, which is connected to the ventilation gap 32 and the first channel section 111.

[0129] Considering that the abutment 2 needs to move relative to the limiting sleeve 3, "there is a ventilation gap 32 between the abutment 2 and the inner wall of the limiting sleeve 3" can also be understood as that there is an assembly gap between the abutment 2 and the inner wall of the limiting sleeve 3.

[0130] In the above technical solution, a vent 311 is provided to connect the vent gap 32 and the first channel section 111. The gas and electrolyte entering the vent gap can be discharged outward through the vent 311, preventing electrolyte residue in the limiting sleeve 3 and blockage of the limiting sleeve 3.

[0131] In some embodiments, a plurality of vents 31 are distributed along the circumference and / or the first direction X of the limiting sleeve 3.

[0132] Multiple ventilation sections 31 can be arranged in a circumferential direction along the limiting sleeve 3, or in a direction extending from the limiting sleeve 3, or in both directions simultaneously.

[0133] In the above technical solution, multiple ventilation sections 31 are distributed along the circumference and the first direction X of the limiting sleeve 3, which can reduce the weakening of the structural strength of the limiting sleeve 3 by the arrangement of the ventilation sections 31. The thickness of the limiting sleeve 3 can be reduced according to the actual exhaust situation.

[0134] In some embodiments, the main body 1 is further provided with a connecting hole 12, which is connected to the other end of the first channel segment 111 and is disposed opposite to the first opening 11a in the first direction X; the limiting sleeve 3 includes a first sleeve segment 3a and a second sleeve segment 3b, the first sleeve segment 3a is detachably disposed in the connecting hole 12, and the second sleeve segment 3b is disposed in the first channel segment 111; wherein, the inner wall of the first channel segment 111 and the tube wall of the second sleeve segment 3b are spaced apart.

[0135] Since one end of the first channel segment 111 is connected to the first opening 11a, "the connecting hole 12 is connected to the other end of the first channel segment 111" means that the connecting hole 12 is located on the other end of the main body 1 away from the first opening 11a, and is connected to the first channel segment 111 along the first direction X; "the first sleeve segment 3a is detachably provided in the connecting hole 12" means that the first sleeve and the connecting hole 12 are adapted to each other. For example, the first sleeve segment 3a and the connecting hole 12 can be fixed by a knob connection through an internal thread and an external thread structure. Or, the first sleeve segment 3a and the connecting hole 12 can be fastened by an interference fit.

[0136] In the above technical solution, the limiting sleeve 3 is detachably connected to the communicating hole 12 on the main body 1 through its first sleeve section 3a. During the maintenance of the suction device 100, the limiting sleeve 3 can be removed from the main body 1 to facilitate cleaning or replacement of the limiting sleeve 3.

[0137] In some embodiments, the main body 1 is provided with an annular groove 13 surrounding the first opening 11a, and a sealing gasket 5 is provided in the annular groove 13. The sealing gasket 5 protrudes from the annular groove 13 and is used to abut against the end cap 310 of the battery cell 300.

[0138] It should be noted that the annular groove 13 is arranged around the first opening 11a, and its specific shape can be adapted to the shape of the first opening 11a, or it can be any closed geometric shape. The function of the annular groove 13 is to provide a basis for limiting the installation of the sealing gasket 5. Therefore, the shape of the sealing gasket 5 is usually adapted to the shape of the annular groove 13. The annular groove 13 can be arranged at intervals with the first opening 11a, or it can be connected to the first opening 11a through its inner sidewall to jointly form a stepped surface for placing the sealing gasket 5. This embodiment does not limit this.

[0139] In the above technical solution, an annular groove 13 is provided at one end of the first opening 11a on the main body 1. The annular groove 13 can provide a basis for limiting the installation of the sealing gasket 5. On this basis, the sealing gasket 5 protrudes from the annular groove 13. During the process of the first opening 11a of the main body 1 connecting to the injection hole 310a, the sealing gasket 5 can abut against the end cap 310 of the battery cell 300, thereby creating a relatively sealed environment to cooperate with the suction channel 11 for negative pressure suction and improve the suction effect.

[0140] In some embodiments, the suction device 100 further includes a cleaning mechanism having a spray head configured to communicate with a first opening 11a.

[0141] It should be noted that "the spray head is configured to connect to the first opening 11a" can mean that the spray head is movable, so that it avoids the suction device 100 during the suction operation, and moves to connect with the first opening 11a after the suction device 100 has finished suctioning. The cleaning mechanism usually also includes a liquid delivery pipeline for delivering cleaning fluid to the spray head.

[0142] In the above technical solution, a cleaning solution can be sprayed onto the suction channel 11 using a spray head. The residual electrolyte in the suction channel 11 can be cleaned and carried away by the cleaning solution, which plays a role in maintaining the suction channel 11 and also prevents the electrolyte from corroding the suction channel 11.

[0143] This application also proposes a shaping device, which includes a suction device 100. The specific structure of the suction device 100 is as described in the above embodiments. Since this shaping device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The shaping device may only include the suction device 100, and its shaping process can be completed by manual squeezing. Of course, under normal circumstances, the shaping device may also include other devices besides the suction device 100, such as a negative pressure generating device. This embodiment does not limit this.

[0144] In some embodiments, the shaping equipment has a shaping station for placing the battery cell 300; the shaping equipment also includes a shaping device 200, which and the suction device 100 are respectively provided corresponding to the shaping station; wherein, the shaping device 200 is used to squeeze the outer casing of the battery cell 300 to restore the shape of the battery cell 300, and the suction device 100 is used to assist the liquid injection hole 310a of the battery cell 300 in venting when the shaping device 200 squeezes the outer casing of the battery cell 300.

[0145] It should be noted that the shaping device 200 and the suction device 100 are respectively set up for the shaping station. Considering that the shaping device 200 acts on the side of the battery cell 300 and the suction device 100 acts on the end cap 310 of the battery cell 300, the shaping device 200 can be set on the side of the battery cell 300, that is, on the side of the shaping station, and the suction device 100 can be set on the top of the battery cell 300, that is, at the top of the shaping station. Generally speaking, the shaping station has a positioning part corresponding to the battery cell 300.

[0146] In the above technical solution, by setting the shaping device 200 and the suction device 100 to corresponding shaping stations, the automated shaping and air extraction operations of the battery cell 300 can be realized.

[0147] In some embodiments, the shaping device 200 includes two shaping portions 210 arranged opposite to each other, which are movable relative to each other to compress two opposite sides of the housing of the battery cell 300.

[0148] For square aluminum-cased battery cells, they typically have two opposing sides in the thickness and length directions (the two opposing sides in the thickness direction are also called large surfaces). The bulging area of ​​the square aluminum-cased battery cell is usually located on the large surface, and the part of the shaping part 210 that contacts the battery cell 300 is also usually located on its large surface. "The two shaping parts 210 can move relatively close to or away from each other" includes both shaping parts 210 being able to move relative to each other, and one shaping part 210 being fixedly set while the other shaping part 210 moves relative to it.

[0149] In the above technical solution, by means of the two shaping parts 210 moving away from each other, space can be provided for the placement of the battery cell 300 in the shaping station. By means of the two shaping parts 210 moving closer to each other, a squeezing force can be applied to the two opposite sides of the battery cell 300, thereby restoring its flat shape.

[0150] In some embodiments, two shaping parts 210 are arranged in a one-to-one correspondence to form a shaping group. Two shaping groups are provided, and they are respectively arranged on two opposite sides of the battery cell 300. In the two shaping groups, one shaping part 210 is fixed and the other shaping part 210 is movable. The two fixed shaping parts 210 can achieve the positioning effect of the battery cell 300.

[0151] Please see Figure 8 This application also proposes a shaping method based on the aforementioned shaping device, the shaping method comprising the following steps:

[0152] S10. Install the sealing component 320 into the liquid injection hole 310a of the battery cell 300;

[0153] The installation of the sealing component 320 can be done manually or by automated equipment; this application embodiment does not limit the method.

[0154] S20. The battery cell 300 is placed in the shaping station of the shaping equipment so that the liquid injection hole 310a of the battery cell 300 is connected to the first opening 11a of the suction device 100, and the sealing member 320 is abutted by the abutting member 2 of the suction device 100.

[0155] Among them, "placing the battery cell 300 in the shaping station of the shaping equipment" means that the shaping station is usually equipped with a positioning part for positioning the battery cell 300. "so that the liquid injection hole 310a of the battery cell 300 is connected to the first opening 11a of the suction device 100" can be achieved by driving the main body 1 of the suction device 100 to move actively toward the end cap 310 of the battery cell 300, or by lifting the battery cell 300 closer to the main body 1 by lifting the lifting device.

[0156] S30. The shaping device 200 shapes the casing of the battery cell 300, and the suction device 100 suctions the gas and electrolyte overflowing from the injection hole 310a of the battery cell 300.

[0157] In the above technical solution, by installing a sealing component 320 into the liquid injection hole 310a of the battery cell 300 in advance, a weak area can be formed in the outer shell of the battery cell 300. During the subsequent shaping process of the battery cell 300 by the shaping device 200, the liquid injection hole 310a can guide the gas inside the battery cell 300 to be discharged outward, and then be absorbed and collected by the suction device 100.

[0158] In a specific embodiment of this application, the suction device 100 includes a main body 1, an abutment member 2, a driving member 4, a limiting sleeve 3, and a cleaning mechanism. The main body 1 has a first end and a second end located in a first direction X. The main body 1 has a suction channel 11, which has a first channel segment 111 extending along the first direction X and a second channel segment 112 extending along the second direction Y. One end of the first channel segment 111 passes through the first end of the main body 1 and forms a first opening 11a. The first opening 11a is used to communicate with the liquid injection hole 310a of the battery cell 300. The second channel segment 112 extends along the second direction Y, and one end of the second channel segment 112 is connected to the first end of the main body 1. A first channel segment 111 extends through the main body 1 at one end, forming a second opening 11b. The second opening 11b is used to communicate with a negative pressure generating device. A connecting hole 12 is provided at the second end of the main body 1, which connects to the other end of the first channel segment 111. The limiting sleeve 3 includes a first sleeve segment 3a and a second sleeve segment 3b located in the first direction X. The first sleeve segment 3a is detachably disposed in the connecting hole 12. The second sleeve segment 3b is disposed within the first channel segment 111. The wall of the second sleeve segment 3b is spaced apart from the inner wall of the first channel segment 111. The wall of the second sleeve segment 3b is provided with multiple venting sections 31, which extend along the limiting sleeve 3. The battery cell 300 is circumferentially and distributed in the first direction X. Multiple ventilation sections 31 include ventilation holes 311 and ventilation grooves 312. A ventilation gap 32 exists between the abutment member 2 and the inner wall of the limiting sleeve 3. The ventilation holes 311 connect the ventilation gap 32 and the first channel section 111. The ventilation groove 312 is located on the end face of the second sleeve section 3b facing the first opening 11a. The main body 1 has an annular groove 13 surrounding the first opening 11a. A sealing gasket 5 is provided in the annular groove 13, with a portion of the sealing gasket 5 protruding from the annular groove 13 for abutting against the end cap 310 of the battery cell 300. A cleaning mechanism includes a spray head configured to connect to the first opening 11a. The abutment 2 is movably disposed in the limiting sleeve 3 along the first direction X, so that it has a blocking position close to the first opening 11a and a clearance position away from the first opening 11a within its active stroke. The end of the abutment 2 close to the first opening 11a is disposed in the second sleeve section 3b. The end of the second sleeve section 3b close to the first opening 11a is used for the sealing member 320 that blocks the injection hole 310a to extend into. In the blocking position, the abutment 2 abuts against the sealing member 320. In the clearance position, the abutment 2 clearances the sealing member 320, so that the sealing member 320 can move into the second sleeve section 3b and the injection hole 310a is in a communicating state with the first opening 11a.The driving component 4 includes a mounting portion 41 and a floating portion 42 spaced apart along a first direction X. The mounting portion 41 is movably disposed along the first direction X. An elastic buffer 43 is disposed between the floating portion 42 and the mounting portion 41. An abutment 2 is connected to the floating portion 42. The floating portion 42 is provided with an abutment top 44, which extends along the first direction X. When the elastic buffer 43 is in its initial state, the abutment top 44 is spaced apart from the mounting portion 41. The mounting portion 41 has a mating groove 411 extending toward the floating portion 42. The abutment top 44 is movably mounted in the mating groove 411 along the first direction X. The driving component 4 also includes a lead screw drive assembly. The mounting portion 41 is mounted on the lead screw drive assembly's lead sleeve. The elastic buffer 43 is a spring.

[0159] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This 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 suction device for assisting the liquid injection port of a battery cell in venting air, characterized in that, The suction device includes: The main body has a suction channel with a first opening and a second opening. The first opening is used to communicate with the liquid injection hole of the battery cell, and the second opening is used to communicate with a negative pressure generating device. A contact member, movably disposed within the suction channel, has a blocking position and a yielding position within its travel stroke. In the blocking position, the contact member abuts against a sealing member blocking the injection hole. In the yielding position, the contact member yields to the sealing member, allowing the sealing member to move into the suction channel, and the injection hole is in communication with the first opening; and... A driving member is connected to the abutment member. When the sealing member is pushed away from the injection hole, the abutment member, in order to cooperate with the sealing member, can reach the clearance position. When the impact force of the gas applied to the sealing member is less than the abutment force applied by the abutment member to the sealing member, the driving member is configured to at least be able to drive the abutment member to move from the clearance position to the sealing position. The orientation of the first opening is defined as the first direction; The suction channel includes a first channel segment, which communicates with the first opening and extends along the first direction; The abutment is movably disposed in the first channel segment along the first direction, so that it has a blocking position close to the first opening and a avoidance position away from the first opening within its movement stroke; The driving component includes a mounting portion and a floating portion spaced apart along the first direction, and an elastic buffer is provided between the floating portion and the mounting portion; The abutting member is connected to the floating part; The mounting part is movably disposed along the first direction.

2. The suction device as described in claim 1, characterized in that, One of the mounting portion and the floating portion is provided with a top abutment, the top abutment extending along the first direction, and when the elastic buffer is in the initial state, the other of the mounting portion and the floating portion is spaced apart from the top abutment in the first direction.

3. The suction device as described in claim 2, characterized in that, The abutment top is provided on the floating part; The mounting portion has a mating groove extending toward the floating portion, and the abutment top is movably mounted in the mating groove along the first direction.

4. The suction device as described in claim 1, characterized in that, The main body is also provided with a connecting hole, which is connected to the other end of the first channel segment and is positioned opposite to the first opening in the first direction. The abutment is provided corresponding to the communicating hole and is connected to the driving member.

5. The suction device as described in claim 1, characterized in that, The suction channel further includes a second channel segment extending along a second direction, one end of the second channel segment being connected to the first channel segment, and the other end of the second channel segment being connected to the second opening; The first direction and the second direction are intersecting.

6. The suction device according to any one of claims 1 to 5, characterized in that, The suction device further includes a limiting sleeve, at least a portion of which is disposed within the first channel segment and at least sleeved on the end of the abutment member facing the first opening. The limiting sleeve is used to allow the sealing member to extend into it.

7. The suction device as described in claim 6, characterized in that, The wall of the limiting sleeve is provided with multiple venting sections, which are connected to the inner cavity of the limiting sleeve and the first channel section.

8. The suction device as described in claim 7, characterized in that, The ventilation section includes a ventilation groove, which is disposed on the end face of the limiting sleeve facing the first opening.

9. The suction device as described in claim 7, characterized in that, There is an air gap between the abutting member and the inner wall of the limiting sleeve; The ventilation section includes a ventilation hole, which is connected to the ventilation gap and the first channel section.

10. The suction device as described in claim 7, characterized in that, The plurality of the ventilation sections are distributed along the circumference and / or the first direction of the limiting sleeve.

11. The suction device as described in claim 6, characterized in that, The main body is also provided with a connecting hole, which is connected to the other end of the first channel segment and is positioned opposite to the first opening in the first direction. The limiting sleeve includes a first sleeve section and a second sleeve section. The first sleeve section is detachably disposed in the communicating hole, and the second sleeve section is disposed within the first channel section. The inner wall of the first channel section and the pipe wall of the second sleeve section are spaced apart.

12. The suction device according to any one of claims 1 to 5, characterized in that, The main body is provided with an annular groove surrounding the first opening, and a sealing gasket is provided in the annular groove. The sealing gasket protrudes from the annular groove and is used to abut against the end cap of the battery cell.

13. The suction device according to any one of claims 1 to 3, characterized in that, The suction device further includes a cleaning mechanism having a spray head configured to communicate with the first opening.

14. A shaping device, characterized in that, Includes the suction device as described in any one of claims 1 to 13.

15. The shaping device as described in claim 14, characterized in that, The shaping equipment has a shaping station for placing individual battery cells; The shaping equipment also includes a shaping device, and the shaping device and the suction device are respectively set up corresponding to the shaping station; The shaping device is used to squeeze the outer casing of the battery cell to restore the shape of the battery cell, and the suction device is used to assist the filling hole of the battery cell in venting air when the shaping device squeezes the outer casing of the battery cell.

16. The shaping device as described in claim 15, characterized in that, The shaping device includes two shaping parts arranged opposite each other, which can move closer or further apart to squeeze two opposite sides of the battery cell casing.

17. A shaping method, based on the shaping device as described in claim 15 or 16, characterized in that, Includes the following steps: Install a sealing component into the electrolyte filling hole of the battery cell; The battery cell is placed in the shaping station of the shaping equipment so that the liquid injection hole of the battery cell is connected to the first opening of the suction device, and the sealing member is abutted by the abutment of the suction device. The shaping device is used to shape the casing of the battery cell, and the suction device is used to suction the gas and electrolyte overflowing from the injection hole of the battery cell.

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