Cell inflation apparatus

Abstract

The application provides an electric core inflation device, which comprises a support, a sealing assembly and a gas device. A bottom support is arranged on the support, and a sealing cover covers the bottom support to form a sealed space for placing the electric core. The limiting surface formed by the sealing cover can place the electric core in a flat posture on the bottom support, and limit the flat electric core by the limiting surface, so as to limit the outer circumferential side of the electric core and avoid the electric core from shaking in the sealed space. The sealing space is formed by the sealing cover and the bottom support, so as to facilitate the inflation and deflation of the electric core. In this way, the gap between the diaphragms wound in the electric core can be puffed by the action force of the airflow during the inflation and deflation, so as to facilitate the liquid injection. The application makes the electric core in a non-vertical state, inflates and deflates the electric core in a horizontal posture, avoids the problem that the tab at both ends of the electric core is damaged in the vertical state, and improves the reliability during the inflation and deflation of the electric core and the product yield of the electric core.

Description

Technical Field

[0001] This invention relates to the field of battery cell processing equipment technology, and in particular to a battery cell inflation device. Background Technology

[0002] Cylindrical battery cells are made by winding separators. When injecting electrolyte into the cells, the gaps between the wound separators are small, making it difficult for the electrolyte to completely wet the separators, resulting in poor injection efficiency. Therefore, before injecting electrolyte into the cells, it is necessary to inflate and deflate the cells to loosen the gaps between the separators and facilitate electrolyte injection.

[0003] In related technologies, battery cells are transported and enter the charging equipment in an upright state (with the cell axis vertical), and are then charged and depressurized after being pressed by pressure pins. However, for battery cells with exposed tabs (especially full-tab cells), directly pressing the cell with pressure pins while it is in an upright state can easily damage the tabs, affecting battery quality and reducing the yield of finished products. Summary of the Invention

[0004] This invention discloses a battery cell inflation device that can inflate battery cells in a flat position, making the gaps between the diaphragms fluffy, so as to facilitate liquid injection and avoid damaging the battery cell tabs.

[0005] To achieve the above objectives, the present invention discloses a battery cell inflation device, comprising: support; A sealing assembly includes a base and a sealing cover. The base is disposed on the bracket, and the sealing cover covers the base, forming a sealed space for placing a battery cell between the sealing cover and the base. A limiting component is provided on one surface of the sealing cover located within the sealed space. A limiting surface is formed on one surface of the limiting component facing the base, and the limiting surface is adapted to and abuts against the outer peripheral side of the battery cell. A gas device, connected to the base, is used to inflate or deflate the sealed space.

[0006] As an optional implementation, in this embodiment of the invention, the limiting assembly includes a shaft and a limiting member. One end of the shaft is connected to the sealing cover, and the limiting member has a mounting through hole along the axial direction of the shaft. The mounting through hole is movably sleeved on the outer periphery of the other end of the shaft, so that the limiting member is movable relative to the shaft along the axial direction of the shaft. The side of the limiting member opposite to the shaft forms the limiting surface.

[0007] As an optional implementation, in this embodiment of the invention, the end of the shaft away from the sealing cover is provided with a protrusion, a first step is formed between the protrusion and the shaft, the mounting through hole is movably sleeved on the outer periphery of the protrusion, and a second step is formed on the inner wall of the mounting through hole corresponding to the position of the first step. The first step and the second step are engaged and connected to connect the limiting member to the shaft.

[0008] As an optional implementation, in this embodiment of the invention, the limiting component further includes a first elastic element, which is sleeved on the outer periphery of one end of the shaft and extends along the axial direction of the shaft. The two ends of the first elastic element abut against the sealing cap and the limiting component, respectively.

[0009] As an optional implementation, in this embodiment of the invention, the battery cell inflation device further includes a support member disposed on the base, the support member being used to support the outer peripheral side of the battery cell, so that there is a gap between the base and the battery cell, the gap forming part of the sealed space; The base is provided with an inflation channel and an exhaust channel. The base has a mounting surface for mounting the support member. The inflation channel has a first air inlet and a first exhaust outlet. The first air inlet is connected to the gas device. The first exhaust outlet is configured to correspond to the battery cell and is connected to the gap. The exhaust channel has a second air inlet and a second exhaust outlet. The second air inlet is configured to correspond to the battery cell and is connected to the gap. The second exhaust outlet is connected to the gas device.

[0010] As an optional implementation, in this embodiment of the invention, the battery cell inflation device further includes a connector, a first switch, and a second switch. The connector has a first channel and a second channel. The first channel is connected to the inflation channel and the gas device. The first switch is disposed on the connector and is used to control the connection or disconnection of the first channel and the inflation channel. The second channel is connected to the exhaust channel and the gas device. The second switch is disposed on the connector and is used to control the connection or disconnection of the second channel and the exhaust channel.

[0011] As an optional implementation, in this embodiment of the invention, there are multiple support members, and the multiple support members are arranged at intervals.

[0012] As an optional implementation, in this embodiment of the invention, the battery cell inflation device further includes a stop block disposed on the base along the axial direction of the battery cell. The stop block is used to be disposed at the end of the battery cell to guide the airflow direction for inflation and deflation.

[0013] As an optional implementation, in this embodiment of the invention, the block is provided with a vent hole.

[0014] As an optional implementation, in this embodiment of the invention, there are two blocks, and the two blocks are respectively provided at the two ends of the battery cell.

[0015] As an optional implementation, in this embodiment of the invention, the sealing assembly includes multiple sets, which are arranged in a straight line.

[0016] As an optional implementation, in this embodiment of the invention, the support includes a stand and a bracket, the stand is disposed on the bracket, and the stand protrudes vertically from the base. The battery cell inflation device further includes a first motion component, the first motion component is connected to the portion of the stand that protrudes from the base, and the first motion component is disposed corresponding to the base. The sealing cover is connected to the first motion component and moves relative to the base under the action of the first motion component to seal against the base, thereby forming the sealed space, or moves and separates from the base under the action of the first motion component.

[0017] As an optional implementation, in this embodiment of the invention, the sealing assembly further includes a fixing seat and a second elastic member. The fixing seat is connected between the first moving assembly and the sealing cover, and the second elastic member is connected between the fixing seat and the sealing cover. The second elastic member is used to provide a clamping force on the sealing cover along a first direction, wherein the first direction is configured to be from the sealing cover to the base.

[0018] As an optional implementation, in this embodiment of the invention, the first motion component includes a linkage assembly, a drive member, and a connecting plate. The connecting plate is connected to the sealing cover. The linkage assembly is movably disposed on the bracket and connected to the connecting plate. The drive member is disposed on the bracket and connected to the linkage assembly. The drive member is used to drive the linkage assembly to move the connecting plate so that the sealing cover seals the base, or the sealing cover separates from the base.

[0019] As an optional implementation, in this embodiment of the invention, the linkage assembly includes a first linkage and a second linkage connected in sequence. The connection portion of the first linkage and the second linkage forms a connecting joint. The first linkage is connected to the bracket, the second linkage is connected to the connecting plate, and the driving member is connected to the connecting joint. The driving member drives the connecting joint to move so that one end of the second linkage connected to the connecting plate and one end of the first linkage connected to the bracket move closer to or further away from each other.

[0020] As an optional implementation, in this embodiment of the invention, the battery cell inflation device further includes a second motion component, which includes a guide rail and a slide plate. The slide plate is provided with the base, and the guide rail is provided with the bracket. The slide plate is slidably connected to the guide rail so that the base moves along the guide rail to the position corresponding to the sealing cover.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a battery cell inflation device that uses the limiting surface formed by the sealing cover to place the battery cell in a flat position on the base. The limiting surface restricts the flat position of the battery cell, thereby limiting the outer periphery of the battery cell and preventing the battery cell from shaking in the sealed space. This allows the battery cell to be placed in a flat position in the sealed space formed by the sealing cover and the base cover for inflation and deflation. In this way, on the one hand, the sealed space allows the diaphragm wound in the battery cell to expand in the diameter direction due to the force of airflow during inflation and deflation, and the change in airflow pressure causes relative movement between the stacked diaphragms in the battery cell. This reduces the winding stress of the battery cell and makes the gaps between the diaphragms loose, which facilitates liquid injection. On the other hand, it allows the battery cell to be inflated and deflated in a horizontal position by flat discharge, avoiding the problem of the electrode tabs at both ends of the battery cell being damaged when the battery cell is pressed by the pressure needle in the upright position. This improves the reliability of the battery cell during inflation and deflation and the product yield of the battery cell. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a top view of the battery cell inflation device provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the sealing assembly provided in the embodiment of the present invention in a sealed state; Figure 3 This is a cross-sectional view of the sealing cap provided in an embodiment of the present invention; Figure 4 yes Figure 3 A magnified view of part A; Figure 5 This is a top view of the base provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the sealing assembly provided in an embodiment of the present invention; Figure 7 This is a side view of the bracket provided in an embodiment of the present invention; Figure 8 This is a front view of the bracket provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the first motion component provided in an embodiment of the present invention.

[0024] Icons: 100, Battery cell inflation device; 10, Bracket; 11, Stand; 12, Support; 20, First motion component; 21, Link assembly; 211, First link; 212, Second link; 213, Connecting joint; 22, Drive component; 23, Connecting plate; 30, Sealing assembly; 31, Base support; 311, Inflation channel; 311a, First air inlet; 311b, First exhaust outlet; 312, Exhaust channel; 312a, Second air inlet; 312b, Second exhaust outlet; 310, Limiting surface; 32, Sealing cover; 320, Receiving groove; 32 1. Accommodating space; 3210. Inner wall surface; 33. Sealed space; 34. Fixing base; 35. Second elastic element; 41. First switch; 42. Second switch; 43. Connector; 431. First channel; 432. Second channel; 50. Support member; 60. Stop block; 70. Limiting component; 71. Shaft; 712. Protrusion; 7120. First step; 72. Limiting component; 721. Mounting through hole; 7210. Second step; 73. First elastic element; 80. Second motion component; 81. Guide rail; 200. Conveyor belt; 300. Battery cell. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0027] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0028] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0029] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0030] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0031] Please see Figures 1 to 3 This application provides a battery cell inflation device 100, including a support 10, a sealing assembly 30, and a gas device (not shown). The sealing assembly 30 includes a base 31 and a sealing cover 32. The base 31 is disposed on the support 10, and the sealing cover 32 covers the base 31, forming a sealed space 33 for placing a battery cell 300 between the sealing cover 32 and the base 31. A limiting assembly 70 is provided on one surface of the sealing cover 32 located in the sealed space 33. A limiting surface 310 is formed on the surface of the limiting assembly 70 facing the base 31. The limiting surface 310 is adapted to the outer peripheral surface of the battery cell 300 and is used to abut against the outer peripheral side surface of the battery cell 300. The gas device is connected to the base 31 and is used to inflate or deflate the sealed space 33.

[0032] In this embodiment, the limiting surface 310 formed by the sealing cap 32 allows the battery cell 300 to be placed flat on the base 31. The limiting surface 310 restricts the flat battery cell 300, thereby limiting its outer periphery and preventing it from shaking in the sealed space 33 due to airflow disturbance during inflation and deflation. The sealing cap 32 and the base 31 together form a sealed space 33, facilitating inflation and deflation of the battery cell 300. In this way, the diaphragm wound in the battery cell 300 can expand in the diameter direction due to the force of the airflow during inflation and deflation, causing relative movement between the stacked diaphragms within the battery cell 300. This reduces the winding stress of the battery cell 300 and loosens the gaps between the diaphragms, facilitating electrolyte injection. By setting the limiting component 70, the battery cell 300 can be more accurately pressed and limited, improving the fit between the limiting surface 310 and the outer peripheral side of the battery cell 300. This prevents airflow from disturbing the battery cell 300 during inflation or deflation, thus improving the stability of the battery cell 300 during inflation. In this way, the battery cell 300 can be inflated and deflated in a horizontal position without being upright, avoiding the problem of the electrode tabs at both ends of the battery cell being damaged when pressed by the pressure pin in an upright state. This improves the reliability of the battery cell 300 during inflation and deflation, as well as the product yield of the battery cell 300.

[0033] It is understandable that the outline of the outer peripheral side of the battery cell 300 can be arc-shaped (e.g., cylindrical battery cell), flat, or flat with curved edges. The limiting surface 310 is adapted to the outer peripheral surface of the battery cell 300, which means that the limiting surface 310 can be flexibly set according to the outline of the outer peripheral surface of the battery cell 300 so that the limiting surface 310 roughly fits the outer periphery of the battery cell 300. For example, the limiting surface 310 can be set as an arc surface, or a stepped surface can be set along the outer periphery of the battery cell 300 to facilitate cooperation with the battery cell 300.

[0034] In some embodiments, the limiting assembly 70 includes a shaft 71 and a limiting member 72. One end of the shaft 71 is connected to the sealing cover 32. The limiting member 72 has a mounting through hole 721 along the axial direction of the shaft 71. The mounting through hole 721 is movably sleeved on the outer periphery of the other end of the shaft 71 so that the limiting member 72 is movable relative to the shaft 71 along the axial direction of the shaft 71. The side of the limiting member 72 opposite to the shaft 71 forms a limiting surface 310.

[0035] By setting the shaft 71, it is easy to connect the limiting member 72 to the inner wall of the sealing cover 32, which improves the ease of installation of the limiting member 72 and makes the surface of the limiting member 72 facing the bottom support 31 protrude from the inner wall surface of the sealing cover 32, thereby making it easier for the limiting member 72 to abut against the outer periphery of the battery cell 300, further improving the accuracy of pressing the battery cell 300.

[0036] In some embodiments, a protrusion 712 is provided at the end of the shaft 71 away from the sealing cover 32. A first step 712 is formed between the protrusion 712 and the shaft 71. A mounting through hole 721 is movably sleeved on the outer periphery of the protrusion 712. A second step 7210 is formed on the inner wall of the mounting through hole 721 corresponding to the position of the first step 7120. The first step 7120 and the second step 7210 are connected to each other so that the limiting member 72 is connected to the shaft 71.

[0037] By utilizing the mating connection of the first step 7120 and the second step 7210, the limiting member 72 can be prevented from detaching from the shaft 71, thereby improving the connection strength and stability between the limiting member 72 and the shaft 71. The limiting member 72 is movable relative to the shaft 71 along the axial direction of the shaft 71, which provides a margin of movement when the limiting member 72 presses against the battery cell 300 to accommodate battery cells 300 of different sizes.

[0038] Optionally, the shaft 71 may be provided with a connecting hole that passes through the protrusion 712. Using bolts or screws, the mounting through hole 721 of the limiting member 72 and the connecting hole are passed in sequence to fasten the limiting member 72 and the shaft 71 to the inner wall of the sealing cover 32.

[0039] In some embodiments, the limiting component 70 further includes a first elastic element 73, which is sleeved on the outer periphery of one end of the shaft 71 and extends along the axial direction of the shaft 71. The two ends of the first elastic element 73 abut against the sealing cover 32 and the limiting component 72, respectively.

[0040] The first elastic member 73 can provide elastic force to the limiting member 72, so that the limiting member 72 can cooperate with the support member 50 to press the battery cell 300 and prevent the battery cell 300 from moving during the inflation process.

[0041] Optionally, the first elastic element 73 can be a spring, a silicone component, organic foam, etc. For example, when the first elastic element 73 is a compression spring, it can be sleeved on the outer periphery of the shaft 71. The first elastic element 73 contracts when the limiting surface 310 of the limiting member 72 contacts the outer peripheral side of the battery cell 300. When the sealing cover 32 completely seals the base 31 and stops moving relative to the base 31, the first elastic element 73 extends using its rebound force to push the limiting member 72 to move slightly towards the battery cell 300, making the fit between the limiting member 72 and the battery cell 300 tighter. This further improves the pressing effect of the limiting member 72 on the battery cell 300.

[0042] In this embodiment, to form a sealed space 33 between the sealing cap 32 and the base 31, one of the sealing cap 32 and the base 31 can be a box-shaped structure with an opening, and the other can be a plate-shaped structure, which are then fitted together to form the sealed space 33. Alternatively, both can be box-shaped structures with openings, which are fitted together to form the sealed space 33. The choice of which method to use depends on the actual design requirements of the sealing assembly 30 structure, and this embodiment does not impose a specific limitation. Preferably, the sealing cap 32 is a box-shaped structure with an opening, and the base 31 is a plate-shaped structure. Compared to a box-shaped structure with an opening, this avoids the sidewalls of the base 31 affecting the placement of the battery cell 300 on the base 31, allowing the battery cell 300 to be placed flat on the base 31.

[0043] Furthermore, when the sealing cover 32 is a box-shaped structure with an opening, the sealing cover 32 has a receiving space 321. When the sealing cover 32 seals the base 31, the receiving space 321 forms a sealing space 33. The receiving space 321 has an inner wall surface 3210 facing the base 31. The inner wall surface 3210 is provided with a receiving groove 320. The limiting member 72 is located in the receiving groove 320 and is at least partially located outside the receiving groove 320.

[0044] By setting the receiving groove 320, a portion of the limiting member 72 can be accommodated, thereby increasing the volume of the receiving space 321. This allows for a reduction in the size of the sealing cover 32 while ensuring that the receiving space 321 has sufficient space, thus saving space in the battery cell 300 inflation device.

[0045] In some embodiments, please refer to Figures 1 to 4 The battery cell inflation device 100 also includes a support member 50, which is disposed on the base 31. The support member 50 supports the outer peripheral side of the battery cell 300, so that there is a gap between the base 31 and the battery cell 300, and the gap forms part of the sealed space 33. The base 31 is provided with an inflation channel 311 and an exhaust channel 312. The base 31 has a mounting surface for mounting the support member 50. The inflation channel 311 has a first air inlet 311a and a first exhaust outlet 311b. The first air inlet 311a is connected to a gas device, and the first exhaust outlet 311b is disposed corresponding to the battery cell 300 and connected to the gap. The exhaust channel 312 has a second air inlet 312a and a second exhaust outlet 312b. The second air inlet 312a is disposed corresponding to the battery cell 300 and connected to the gap, and the second exhaust outlet 312b is connected to a gas device.

[0046] By utilizing the inflation channel 311 and the deflation channel 312, the sealed space 33 can be inflated and deflated to achieve the inflation process of the battery cell 300. On the one hand, by using the first deflation port 311b and the second air inlet 312a located on the mounting surface of the base 31, the mounting space of the base 31 can be saved, making the base 31 more compact. On the other hand, by positioning the first deflation port 311b and the second air inlet 312a corresponding to the battery cell 300, the space required for the first deflation port 311b and the second air inlet 312a can be further reduced, thus reducing their space occupation on the base 31.

[0047] Meanwhile, since the first exhaust port 311b and the second air inlet 312a are located on the mounting surface (upper surface) of the base 31, when the battery cell 300 is placed flat on the base 31, it will block the first exhaust port 311b and the second air inlet 312a, affecting airflow. Therefore, by using the support member 50 provided on the upper surface of the base 31 to support the battery cell 300, on the one hand, this allows the outer peripheral surface of the battery cell 300 to leave the upper surface of the base 31, thereby forming a gap and exposing the first exhaust port 311b and the second air inlet 312a, so that the airflow is not blocked by the battery cell 300 and can smoothly enter the sealed space 33. On the other hand, the support member 50 can form a limiting surface 310 to cooperate with the sealing cover 32 to clamp and press the battery cell 300, avoiding the battery cell 300 from shaking and shifting due to airflow disturbance during inflation, and improving the stability and reliability of the battery cell 300 inflation process.

[0048] The process of inflating or deflating the battery cell 300 using the battery cell inflation device 100 is as follows: The gas device introduces inflation gas into the inflation channel 311 through the first inlet 311a. The gas then enters the sealed space 33 through the first outlet 311b via the inflation channel 311, while the second inlet 312a remains closed. The inflation gas continuously enters the sealed space 33, increasing the pressure within the space to inflate the battery cell 300. Once inflation is complete, for example, after maintaining the inflation pressure for a certain period, the inflation channel 311 stops inflating, and the first outlet 311b is closed. Subsequently, the second inlet 312a opens, and the outlet 312 connects to the gas device to expel the gas from the sealed space 33, completing the deflating process.

[0049] Optionally, there may be multiple support members 50, such as two, three, or four, spaced apart. This allows the support members 50 to provide more connection points for the battery cell 300, improving the stability of the battery cell 300 within the base 31. The support members 50 can be triangular, stepped, or have curved surfaces to conform to the outer periphery of the battery cell 300 and support it. Multiple support members 50 can be arranged in an array along the outer periphery of the battery cell 300 or linearly along its axial direction.

[0050] In some embodiments, the battery cell inflation device 100 further includes a connector 43, a first switch 41, and a second switch 42. The connector 43 is provided with a first channel 431 and a second channel 432. The first channel 431 connects the inflation channel 311 and the gas device. The first switch 41 is disposed on the connector 43 and is used to control the connection or disconnection of the first channel 431 and the inflation channel 311. The second channel 432 connects the exhaust channel 312 and the gas device. The second switch 42 is disposed on the connector 43 and is used to control the connection or disconnection of the second channel 432 and the exhaust channel 312.

[0051] The connector 43 allows for the connection of a gas device via the first channel 431 and the second channel 432, facilitating the inflation and deflation of the inflation channel 311 and the deflation channel 312. The flow of air into and out of the inflation and deflation channels 311 and 312 can be controlled by the first switch 41 and the second switch 42.

[0052] The gas control method during the inflation and deflation process of the battery cell inflation device 100 is as follows: During inflation, the first switch 41 is opened, connecting the first channel 431 and the inflation channel 311. A gas device (e.g., an air pump) introduces gas into the inflation channel 311 through the first channel 431, and the inflation channel 311 introduces gas into the sealed space 33. The first switch 41 is closed to stop inflation of the sealed space 33 once the sealed space 33 is fully inflated. During deflation, the second switch 42 is opened, and the gas device draws air through the second channel 432. The gas in the sealed space 33 is discharged through the deflation channel 312 and exits the battery cell inflation device 100 via the second channel 432. This cycle continues until the second switch 42 is closed for the next inflation.

[0053] In some embodiments, the cell inflation device 100 further includes a stop 60 disposed on the base 31 along the axial direction of the cell 300. The stop 60 is used to be disposed at the end of the cell 300 to guide the airflow direction for inflation and deflation.

[0054] Optionally, the airflow enters the sealed space 33 from the first exhaust port 311b. The gas first enters the gap formed between the base 31 and the cell 300. The gas is located near the outer periphery of the cell 300. Then, guided by the baffle 60, the gas direction changes and flows from the outer periphery of the cell 300 to the end of the cell 300, so as to enter the gap between the internal diaphragms of the cell 300. When venting, the airflow can be quickly released through the gap by the direction guided by the baffle 60, thereby causing relative movement between the stacked diaphragms inside the cell 300 and reducing the winding stress of the cell 300, so that the gap between the diaphragms forms a loose state.

[0055] By setting the baffle 60, the airflow direction during inflation can be guided. On the one hand, this prevents the airflow from directly facing the end of the battery cell 300, thus avoiding excessive airflow entering the battery cell 300. On the other hand, it occupies part of the space within the sealed space 33, preventing the airflow from spreading disorderly within that space. This achieves the effect of guiding the airflow into and out of the battery cell 300. By increasing the inflation and deflation speed of the battery cell 300, the rapid pressure change generated by the rapid changes in airflow within the sealed space 33 can be fully utilized to achieve the inflation and deflation process of the battery cell 300, improving the stability of the airflow during the inflation process. Optionally, depending on the different sizes of different models of battery cells 300, baffles 60 of different sizes can be selected to adapt to the size of the battery cell 300, thereby keeping the sealed space 33 at an appropriate size so that the inflation and deflation airflow can pass through quickly and smoothly.

[0056] In some embodiments, the baffle 60 is provided with a vent hole (not shown). By providing a vent hole, airflow can pass through the vent hole during the venting process of the sealed space 33, making the airflow smoother and accelerating the airflow speed during venting, thereby improving the venting efficiency.

[0057] Optionally, when the block 60 is provided with a vent hole, when the sealed space 33 is inflated, a portion of the airflow can also enter the end of the battery cell 300 through the vent hole, thereby inflating the battery cell 300.

[0058] In some embodiments, there are two blocks 60, each corresponding to one end of the battery cell 300. In this way, the two blocks 60 can respectively block the two ends of the battery cell 300, thereby guiding the airflow direction during inflation.

[0059] In some embodiments, such as Figure 1 or Figure 7 As shown, the sealing assembly 30 includes multiple sets, such as two sets, three sets, or four sets (e.g., ...). Figure 1 As shown, multiple sets of sealing components 30 are arranged in a straight line. By arranging multiple sets of sealing components 30 in a straight line, multiple battery cells 300 can be inflated simultaneously, improving the inflation efficiency of the battery cells 300, and making the arrangement of the sealing components 30 on the bracket 10 more compact, reducing space occupation. Optionally, the multiple sets of sealing components 30 can be arranged along... Figure 1 or Figure 7 The arrangement can be set along the x-direction or along the y-direction.

[0060] In some embodiments, please refer to Figure 6 and Figure 7The support 10 includes a stand 11 and a bracket 12. The stand 11 is disposed on the bracket 12 and protrudes vertically from the base 31. The battery cell inflation device 100 also includes a first motion component 20, which is connected to the portion of the stand 11 that protrudes from the base 31 and is disposed corresponding to the base 31. The sealing cover 32 is connected to the first motion component 20 and, driven by the first motion component 20, moves relative to the base 31 to seal against the base 31, forming a sealed space 33, or moves away from the base 31 under the drive of the first motion component 20.

[0061] Using the first motion component 20, the sealing cover 32 can be moved, and the sealing space 33 can be opened or closed, facilitating the removal and removal of the discharge core on the base 31. With this design, the stand 11 can be made approximately perpendicular to the bracket 12. This allows the first motion component 20 to move vertically relative to the base 31 when driving the sealing cover 32 to correspond to and seal the base 31. Setting the direction of movement of the sealing cover 32 relative to the base 31 to be vertical simplifies the movement path of the sealing cover 32, facilitates alignment between the sealing cover 32 and the base 31, reduces the difficulty of alignment, and improves the accuracy of alignment. When the sealing cover 32 separates from the base 31, the sealing cover 32 moves vertically away from the base 31, shortening the movement path of the sealing cover 32 and improving the movement efficiency of the first motion component 20.

[0062] It is understood that, in addition to the above-mentioned movement, the first movement component 20 can also drive the sealing cover 32 to move relative to the base 31 in a way such as flipping or translating, for example, translating in the horizontal direction, or flipping along the sealing cover 32 itself, so that the sealing cover 32 seals the base 31, or separates from the base 31 to expose the opening for easy removal of the discharge core 300.

[0063] In some embodiments, please refer to Figure 5 The sealing assembly 30 also includes a fixing seat 34 and a second elastic member 35. The fixing seat 34 is connected between the first moving assembly 20 and the sealing cover 32. The second elastic member 35 is connected between the fixing seat 34 and the sealing cover 32. The second elastic member 35 is used to provide a clamping force on the sealing cover 32 along a first direction, wherein the first direction is configured as a direction from the sealing cover 32 to the base 31 (e.g., Figure 5 (The opposite direction of the z-direction shown).

[0064] By setting the fixing seat 34, it is easy to connect the sealing cover 32 to the first moving component 20. The second elastic member 35 can provide elastic force to the sealing cover 32 when it is closed on the base 31, so that the sealing cover 32 is pressed against the base 31, thereby improving the sealing degree of the sealing space 33 and preventing air leakage when the battery cell 300 is filled.

[0065] The following explanation will take the movement of the sealing cover 32 relative to the base 31 in the vertical direction as an example.

[0066] In some embodiments, please refer to Figure 7 The first motion component 20 includes a linkage assembly 21, a drive member 22, and a connecting plate 23. The connecting plate 23 is connected to the sealing cover 32. The linkage assembly 21 is movably disposed on the bracket 10 and connected to the connecting plate 23. The drive member 22 is disposed on the bracket 10 and connected to the linkage assembly 21. The drive member 22 is used to drive the linkage assembly 21 to drive the connecting plate 23 to move, so that the sealing cover 32 covers the base support 31, or the sealing cover 32 separates from the base support 31.

[0067] In this way, the driving component 22 can drive the linkage assembly 21 to move, thereby driving the connecting plate 23 to move in the vertical direction, so that the sealing cover 32 covers the base 31 to form a sealed space 33 and inflate the battery cell 300, or drive the sealing cover 32 away from the base 31 so that the battery cell 300 can be taken out from the base 31 or placed.

[0068] Optionally, the drive unit 22 may be a motor or a cylinder, etc.

[0069] In some embodiments, please refer to Figure 8 The linkage assembly 21 includes a first link 211 and a second link 212 connected in sequence. The connection between the first link 211 and the second link 212 forms a connecting joint 213. The first link 211 is connected to the bracket 10, the second link 212 is connected to the connecting plate 23, and the driving member 22 is connected to the connecting joint 213. The driving member 22 drives the connecting joint 213 to move so that one end of the second link 212 connected to the connecting plate 23 is closer to or further away from one end of the first link 211 connected to the bracket 10.

[0070] The driving component 22 pushes the connecting section 213, causing the first connecting rod 211 and the second connecting rod 212 to fold or extend, thereby driving the connecting plate 23 to rise or fall vertically, realizing the vertical movement of the sealing cover 32. This linkage method provides good motion stability while making the connection structure simpler.

[0071] In some embodiments, the battery cell inflation device 100 further includes a second motion component 80, which includes a guide rail 81 and a slide plate (not shown). The slide plate is provided with a base 31, and the guide rail 81 is provided on the bracket 10. The slide plate is slidably connected to the guide rail 81 so that the base 31 moves along the guide rail 81 to the corresponding sealing cover 32.

[0072] The battery cell inflation device 100 is typically located near the material conveyor belt 200. The battery cell 300 needs to be moved from the conveyor belt 200 to the base 31 for inflation. The second motion component 80 can use a guide rail 81 to transport the battery cell 300 from one end of the guide rail 81 to the other end. One end of the guide rail is located near the conveyor belt 200, and the other end is located at the position corresponding to the pressing down of the sealing cover 32. In this way, the battery cell 300 can be automatically transported from the side near the conveyor belt 200 to the area under the sealing cover 32, improving the efficiency of battery cell transportation and thus improving the inflation efficiency of the battery cell 300.

[0073] Optionally, when the slide reaches the vicinity of the conveyor belt 200, the battery cell 300 can be removed from the conveyor belt 200 and placed on the base tray 31 using a robotic arm or manually. When the battery cell 300 is fully inflated, the slide moves from below the sealing cover 32 to the vicinity of the conveyor belt 200, and the robotic arm or manually removes the battery cell 300 from the base tray 31 and places it on the conveyor belt 200 again, so as to transport the fully inflated battery cell 300 away from the battery cell inflation device 100.

[0074] The above provides a detailed description of the battery cell 300 inflation device disclosed in the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the battery cell 300 inflation device and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery cell inflation device (100), characterized in that, include: Support (10); A sealing assembly (30) includes a base (31) and a sealing cover (32). The base (31) is disposed on the bracket (10), and the sealing cover (32) covers the base (31). A sealed space (33) for placing a battery cell (300) is formed between the sealing cover (32) and the base (31). A limiting component (70) is provided on one surface of the sealing cover (32) located in the sealed space (33), and a limiting surface (3) is formed on one surface of the limiting component (70) facing the base (31). 10), the limiting surface (310) is adapted to the outer peripheral side of the battery cell (300) and is used to abut against the outer peripheral side of the battery cell (300). The limiting assembly (70) includes a shaft (71) and a limiting member (72). One end of the shaft (71) is connected to the sealing cover (32). The limiting member (72) is movable relative to the shaft (71) along the axial direction of the shaft (71). The limiting surface (310) is formed on the side of the limiting member (72) facing away from the shaft (71). A gas device is connected to the base (31) and is used to inflate or deflate the sealed space (33).

2. The cell inflation device (100) according to claim 1, characterized in that, The limiting member (72) has a mounting through hole (721) along the axial direction of the shaft (71), the mounting through hole (721) being movably sleeved on the outer periphery of the other end of the shaft (71) so that the limiting member (72) is movable relative to the shaft (71) along the axial direction of the shaft (71).

3. The cell inflation device (100) according to claim 2, characterized in that, The end of the shaft (71) away from the sealing cover (32) is provided with a protrusion (712), and a first step (7120) is formed between the protrusion (712) and the shaft (71). The mounting through hole (721) is movably sleeved on the outer periphery of the protrusion (712), and a second step (7210) is formed on the inner wall of the mounting through hole (721) corresponding to the position of the first step (7120). The first step (7120) and the second step (7210) are connected to each other so that the limiting member (72) is connected to the shaft (71).

4. The cell inflation device (100) according to claim 3, characterized in that, The limiting component (70) further includes a first elastic element (73), which is sleeved on the outer periphery of one end of the shaft (71) and extends along the axial direction of the shaft (71). The two ends of the first elastic element (73) abut against the sealing cap (32) and the limiting component (72), respectively.

5. The cell inflation device (100) according to claim 1, characterized in that, The battery cell inflation device (100) also includes a support member (50), which is disposed on the base (31). The support member (50) is used to support the outer peripheral side of the battery cell (300) so that there is a gap between the base (31) and the battery cell (300), and the gap forms part of the sealed space (33). The base (31) is provided with an inflation channel (311) and an exhaust channel (312). The base (31) has a mounting surface for mounting the support member (50). The inflation channel (311) has a first air inlet (311a) and a first exhaust outlet (311b). The first air inlet (311a) is connected to the gas device. The first exhaust outlet (311b) is configured to correspond to the battery cell (300) and is connected to the gap. The exhaust channel (312) has a second air inlet (312a) and a second exhaust outlet (312b). The second air inlet (312a) is configured to correspond to the battery cell (300) and is connected to the gap. The second exhaust outlet (312b) is connected to the gas device.

6. The cell inflation device (100) according to claim 5, characterized in that, The battery cell inflation device (100) further includes a connector (43), a first switch (41), and a second switch (42). The connector (43) is provided with a first channel (431) and a second channel (432). The first channel (431) is connected to the inflation channel (311) and the gas device. The first switch (41) is located on the connector (43) and is used to control the connection or disconnection of the first channel (431) and the inflation channel (311). The second channel (432) is connected to the exhaust channel (312) and the gas device. The second switch (42) is located on the connector (43) and is used to control the connection or disconnection of the second channel (432) and the exhaust channel (312).

7. The cell inflation device (100) according to claim 5, characterized in that, There are multiple support members (50), and the multiple support members (50) are arranged at intervals.

8. The cell inflation device (100) according to claim 1, characterized in that, The battery cell inflation device (100) further includes a stop (60), which is disposed on the base (31) along the axial direction of the battery cell (300). The stop (60) is used to be disposed at the end of the battery cell (300) to guide the airflow direction of inflation and deflation.

9. The cell inflation device (100) according to claim 8, characterized in that, The stop block (60) is provided with a ventilation hole.

10. The cell inflation device (100) according to claim 8, characterized in that, There are two blocks (60), and the two blocks (60) are respectively provided at the two ends of the battery cell (300).

11. The cell inflation device (100) according to any one of claims 1-10, characterized in that, The sealing assembly (30) includes multiple sets, which are arranged in a straight line.

12. The cell inflation device (100) according to any one of claims 1-10, characterized in that, The bracket (10) includes a stand (11) and a bracket (12). The stand (11) is disposed on the bracket (12) and the stand (11) protrudes vertically from the base (31). The battery cell inflation device (100) also includes a first motion component (20). The first motion component (20) is connected to the part of the stand (11) that protrudes from the base (31) and is disposed corresponding to the base (31). The sealing cover (32) is connected to the first motion component (20) and moves relative to the base (31) under the drive of the first motion component (20) to seal the base (31) to form the sealing space (33), or moves and separates from the base (31) under the drive of the first motion component (20).

13. The cell inflation device (100) according to claim 12, characterized in that, The sealing assembly (30) further includes a fixing seat (34) and a second elastic member (35), the fixing seat (34) being connected between the first moving assembly (20) and the sealing cover (32), the second elastic member (35) being connected between the fixing seat (34) and the sealing cover (32), the second elastic member (35) being used to provide a pressing force on the sealing cover (32) in a first direction, wherein the first direction is configured to be from the sealing cover (32) toward the base (31).

14. The cell inflation device (100) according to claim 12, characterized in that, The first motion component (20) includes a linkage assembly (21), a drive member (22), and a connecting plate. The connecting plate is connected to the sealing cover (32). The linkage assembly (21) is movably disposed on the bracket (10) and connected to the connecting plate. The drive member (22) is disposed on the bracket (10) and connected to the linkage assembly (21). The drive member (22) is used to drive the linkage assembly (21) to drive the connecting plate to move, so that the sealing cover (32) seals the base (31), or the sealing cover (32) separates from the base (31).

15. The cell inflation device (100) according to claim 14, characterized in that, The linkage assembly (21) includes a first linkage (211) and a second linkage (212) connected in sequence. The connection between the first linkage (211) and the second linkage (212) forms a connecting joint (213). The first linkage (211) is connected to the bracket (10), and the second linkage (212) is connected to the connecting plate. The driving member (22) is connected to the connecting joint (213). The driving member (22) drives the connecting joint (213) to move so that the end of the second linkage (212) connected to the connecting plate and the end of the first linkage (211) connected to the bracket (10) move closer or further away from each other.

16. The cell inflation device (100) according to any one of claims 1-10, characterized in that, The battery cell inflation device (100) further includes a second motion component (80), which includes a guide rail (81) and a slide plate. The slide plate is provided with the base (31), and the guide rail (81) is provided on the bracket (10). The slide plate is slidably connected to the guide rail (81) so that the base (31) moves along the guide rail (81) to the location corresponding to the sealing cover (32).

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