Liquid injection pre-treatment device

Abstract

The present invention relates to a liquid injection pre-treatment device. The liquid injection pre-treatment device includes: an air supply mechanism, having an air outlet and an air inlet; and a charging and discharging mechanism, including a fixed component and a movable component for carrying a battery, the fixed component is fixed relative to the air supply mechanism, and has an air filling chamber connected to the air outlet and the air inlet, and a battery inlet connected to the air filling chamber, the movable component is located on the side of the fixed component having the battery inlet, and can be moved relative to the fixed component to be matched or separated from the fixed component; wherein, when the movable component is matched with the fixed component, the battery on the movable component enters the air filling chamber from the battery inlet, and the movable component closes the battery inlet. In this way, the use of a liquid injection pre-treatment device to pre-treat the battery to be injected is conducive to improving the injection efficiency of the liquid injection machine, reducing the number of liquid injection machines on the battery production line, and thereby reducing the demand for factory space and production costs.

Description

Technical Field

[0001] The invention relates to the technical field of battery manufacturing equipment, and in particular to a liquid injection pre-treatment device. Background Art

[0002] Lithium batteries require a liquid injection process during production. It takes a long time to complete the battery injection, which seriously affects the production efficiency of the entire battery production line. In order to improve production efficiency, it is usually achieved by increasing the number of battery liquid injection machines. However, when the number of battery liquid injection machines increases, on the one hand, the demand for factory space increases, and on the other hand, the production cost increases. Summary of the invention

[0003] Based on this, it is necessary to provide a liquid injection pre-treatment device to improve the above defects, in view of the problem that the existing technology adopts the method of increasing the number of battery liquid injection machines to improve production efficiency, which increases the space requirements for the factory and increases production costs.

[0004] A liquid injection pre-treatment device, comprising:

[0005] An air supply mechanism having an air outlet and an air inlet; and

[0006] A gas charging and discharging mechanism, comprising a fixed component and a movable component for carrying a battery, wherein the fixed component is fixed relative to the gas supply mechanism and has a gas charging cavity communicated with the gas outlet and the gas inlet, and a battery inlet communicated with the gas charging cavity, wherein the gas supply mechanism is used to input gas into the gas charging cavity through the gas outlet, and is also used to recover gas in the gas charging cavity through the gas inlet, wherein the movable component is located at a side of the fixed component having the battery inlet, and can be moved relative to the fixed component to be mated with or separated from the fixed component;

[0007] Wherein, when the movable component is matched with the fixed component, the battery on the movable component enters the inflation cavity through the battery entrance, and the movable component closes the battery entrance; when the movable component is separated from the fixed component, the battery on the movable component exits the inflation cavity through the battery entrance.

[0008] In one embodiment, the air supply mechanism is rotatably arranged around a first rotation axis, the fixed component and the movable component are arranged on the air supply mechanism along a first direction parallel to the first rotation axis, and the movable component is movable relative to the fixed component along the first direction;

[0009] The liquid injection pre-treatment device also includes a track mechanism that cooperates with the movable component. When the air supply mechanism rotates around the first rotation axis, it drives the movable component to move along the track mechanism. The track mechanism drives the movable component to move along the first direction to a first state in which it is matched with the fixed component and a second state in which it is separated from the fixed component.

[0010] In one embodiment, the track mechanism includes a first track plate, the first track plate has a first track surface extending around the air supply mechanism, and the movable component has a first matching portion, the first matching portion matches with the first track surface;

[0011] The first track surface includes a first section and a second section having a height difference in the first direction. When the first matching portion moves to the first section, the movable component is in the first state. When the first matching portion moves to the second section, the movable component is in the second state.

[0012] In one embodiment, the track mechanism further includes a second track plate, the second track plate has a second track surface opposite to the first track surface in the first direction, the movable component has a second matching portion, and the second matching portion matches with the second track surface;

[0013] The second track surface includes a first mating section and a second mating section arranged sequentially along its extension direction, and the first mating section and the second mating section have a height difference in the first direction; when the first mating portion moves to the first section, the second mating portion moves to the first mating section; when the first mating portion moves to the second section, the second mating portion moves to the second mating section.

[0014] In one embodiment, the liquid injection pre-treatment device further includes a loading mechanism and a unloading mechanism arranged corresponding to the second section;

[0015] The loading mechanism is used to provide batteries to the movable assembly rotated to cooperate with the second section, and the unloading mechanism is used to receive the batteries on the movable assembly rotated to cooperate with the second section.

[0016] In one embodiment, the loading mechanism is arranged corresponding to the downstream end of the second section, and the unloading mechanism is arranged corresponding to the upstream end of the second section.

[0017] In one embodiment, the air supply mechanism includes a rotating shaft, a rotating disk and an air distributor, the rotating disk is rotatably mounted on the rotating shaft, the axis of the rotating shaft is the first rotating axis, the air distributor is mounted on the rotating disk, and has a first cavity, a second cavity and an air filling hole connected to the first cavity, the air filling hole is used to communicate with an external air source;

[0018] The air outlet and the air inlet are both provided on the air dividing seat, and the air outlet is communicated with the first cavity, and the air inlet is communicated with the second cavity;

[0019] One end of the rotating shaft is located in the second cavity, and an exhaust passage is provided which passes through two opposite ends of the rotating shaft.

[0020] In one embodiment, the movable component includes a sliding structure and a battery positioning structure for positioning the battery. The sliding structure is movably connected to the air supply mechanism along the first direction and cooperates with the track mechanism. The battery positioning structure is installed on the side of the sliding structure facing the fixed component.

[0021] In one embodiment, the battery positioning structure includes a floating seat, a first elastic member and a battery positioning seat, the floating seat is movably connected to the sliding structure along the first direction, the opposite ends of the first elastic member are respectively abutted against the floating seat and the sliding structure, and the battery positioning seat is installed on the side of the floating seat facing the fixed component.

[0022] In one embodiment, the sliding structure includes a first sliding seat, a second sliding seat and a second elastic member;

[0023] The first slide and the second slide are both movably connected to the air supply mechanism along the first direction, and the second slide is located between the first slide and the fixed assembly, and opposite ends of the second elastic member are respectively in contact with the first slide and the second slide;

[0024] The battery positioning structure is arranged on a side of the second slide seat facing the fixing assembly, and the first slide seat cooperates with the track mechanism.

[0025] In one embodiment, the fixing assembly includes an air filling seat connected to the air supply mechanism, and the air filling seat has the air filling cavity and the battery inlet;

[0026] The inflation seat also has an air inlet and an air outlet both connected to the inflation cavity, the air inlet is connected to the air outlet, and the air outlet is connected to the air inlet.

[0027] In one embodiment, the fixed assembly further includes a fixed air seat and a first control valve and a second control valve both mounted on the fixed air seat, the fixed air seat having a first air channel connected to the air inlet and a second air channel connected to the air outlet, the air inlet end of the first control valve being connected to the air outlet, the air outlet end of the first control valve being connected to the first air channel, the air inlet end of the second control valve being connected to the second air channel, and the air outlet end of the second control valve being connected to the air inlet.

[0028] In one embodiment, the fixing assembly further comprises a clamping structure, and the clamping structure comprises a pressure cover seat, a pressure rod and a third elastic member;

[0029] The inflation seat also has a mounting hole connected to the inflation cavity, the pressure cover seat is installed in the mounting hole, one end of the pressure rod is movably connected to the pressure cover seat, and the other end of the pressure rod penetrates into the inflation cavity through the mounting hole, and the opposite ends of the third elastic member are respectively abutted against the pressure cover seat and the pressure rod.

[0030] In one embodiment, the pressure rod has a vent hole, one end of the vent hole is connected to the inflation cavity, and the other end of the vent hole is connected to the inner cavity of the pressure cover seat.

[0031] When the above-mentioned pre-injection treatment device is actually operated, first, the battery to be injected is loaded onto the movable component. Then, the movable component is moved close to the fixed component until it is matched with the fixed component. At this time, the battery on the movable component enters the inflation chamber from the battery inlet, and the movable component seals the battery inlet. Then, the gas is filled into the inflation chamber through the air outlet and the gas in the inflation chamber is discharged through the air inlet in turn, and this process is repeated multiple times to perform pressurization and pressure relief treatments on the battery in the inflation chamber. Then, the movable component is moved away from the fixed component until it is separated from the fixed component. At this time, the battery on the movable component exits the inflation chamber through the battery inlet. Finally, the battery on the movable component is unloaded, and the next battery to be injected is loaded onto the movable component, so that the above steps can be repeated to perform pressurization and pressure relief treatments on the next battery to be injected.

[0032] In this way, using a liquid injection pre-treatment device to pre-treat the battery to be injected is beneficial to improving the injection efficiency of the liquid injection machine, reducing the number of liquid injection machines on the battery production line, and thus reducing the demand for factory space and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a liquid injection pre-treatment device in one embodiment of the present invention;

[0034] Figure 2 for Figure 1A schematic structural diagram of a second track plate of a track mechanism of a liquid injection pre-treatment device shown;

[0035] Figure 3 for Figure 1 The structural schematic diagram of the feeding mechanism and the unloading mechanism of the liquid injection pre-treatment device shown;

[0036] Figure 4 for Figure 1 A cross-sectional view of the gas supply mechanism of the liquid injection pre-treatment device shown;

[0037] Figure 5 for Figure 1 The structural schematic diagram of the gas charging and discharging mechanism of the liquid injection pre-treatment device shown;

[0038] Figure 6 for Figure 5 A cross-sectional view of the inflation and deflation mechanism shown. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] See also Figure 1 As shown, an embodiment of the present invention provides a liquid injection pre-treatment device, which is used to perform multiple rapid pressurization and pressure relief treatments on the battery A to be injected, so as to increase the gap between the pole pieces of the battery cell of the battery A, thereby reducing the liquid injection infiltration resistance, thereby shortening the liquid injection time of the battery A and improving the liquid injection efficiency. In other words, the use of the liquid injection pre-treatment device to pre-treat the battery A to be injected is conducive to improving the liquid injection efficiency of the liquid injection machine, reducing the number of liquid injection machines on the battery A production line, and thereby reducing the demand for plant space and production costs.

[0046] The liquid injection pretreatment device includes an air supply mechanism 10 and an air charging and discharging mechanism 20. The air supply mechanism 10 has an air outlet a1 for inputting gas and an air inlet a2 for recovering gas. The air charging and discharging mechanism 20 includes a fixed component 21 and a movable component 22 for supporting the battery A. The fixed component 21 is fixed relative to the air supply mechanism 10 and has an air charging cavity a7 (see Figure 6), and a battery inlet a8 (see Figure 6 The movable component 22 is located at a side of the fixed component 21 having the battery inlet a8, and can move relative to the fixed component 21 to be mated with or separated from the fixed component 21.

[0047] When the movable component 22 is matched with the fixed component 21, the battery A on the movable component 22 enters the gas filling chamber a7 through the battery inlet a8, and the movable component 22 closes the battery inlet a8, so as to inflate the gas filling chamber a7 through the gas outlet a1 and discharge the gas in the gas filling chamber a7 through the gas inlet a2, thereby pressurizing and depressurizing the battery A in the gas filling chamber a7. When the movable component 22 is separated from the fixed component 21, the battery A on the movable component 22 exits the gas filling chamber a7 through the battery inlet a8, so as to unload the processed battery A and load the unprocessed battery A onto the movable component 22.

[0048] When the above-mentioned liquid injection pre-treatment device is actually operated, first, the battery A to be injected is loaded onto the movable component 22. Then, the movable component 22 moves close to the fixed component 21 to match with the fixed component 21, at which time the battery A on the movable component 22 enters the gas filling chamber a7 from the battery inlet a8, and the movable component 22 seals the battery inlet a8. Then, the gas is filled into the gas filling chamber a7 through the gas outlet a1 and the gas in the gas filling chamber a7 is discharged through the gas inlet a2 in turn, and the pressure increase and pressure relief treatment of the battery A in the gas filling chamber a7 is repeated many times. Then, the movable component 22 moves away from the fixed component 21 to separate from the fixed component 21, and the battery A on the movable component 22 exits the gas filling chamber a7 through the battery inlet a8. Finally, the battery A on the movable component 22 is unloaded, and the next battery A to be injected is loaded onto the movable component 22, so that the above steps are repeated to pressurize and relieve the next battery A to be injected.

[0049] In the embodiment of the present invention, the air supply mechanism 10 is rotatably arranged around a first rotation axis, and the fixed component 21 and the movable component 22 are arranged on the air supply mechanism 10 along a first direction parallel to the first rotation axis, so that the air supply mechanism 10 drives the fixed component 21 and the movable component 22 thereon to rotate around the first rotation axis together. The movable component 22 is movable along the first direction relative to the fixed component 21, that is, in addition to being able to rotate around the first rotation axis with the air supply mechanism 10, the movable component 22 can also move closer to or away from the fixed component 21 along the first direction relative to the air supply mechanism 10.

[0050] The liquid injection pre-treatment device also includes a track mechanism 30 that cooperates with the movable component 22. When the air supply mechanism 10 rotates around the first rotation axis, it drives the movable component 22 to move along the track mechanism 30, so that the track mechanism 30 drives the movable component 22 to move along the first direction to a first state of being matched with the fixed component 21 and a second state of being separated from the fixed component 21. Figure 1 In the illustrated embodiment, the first direction is the up-down direction.

[0051] In this way, the track mechanism 30 allows the movable component 22 to automatically switch between the first state and the second state during the process of rotating with the air supply mechanism 10 around the first rotation axis. When the movable component 22 switches to the second state, the movable component 22 is separated from the fixed component 21, and it is convenient to load and unload the movable component 22 (i.e., remove the battery A on the movable component 22 and load the new battery A onto the movable component 22). When the movable component 22 switches to the first state, the movable component 22 is matched with the fixed component 21, and it is convenient to repeatedly and quickly pressurize and release the battery A (located in the inflation chamber a7) on the movable component 22.

[0052] Specifically in the embodiment, the track mechanism 30 includes a first track plate 31, which is arranged around the air supply mechanism 10 and has a first track surface 310 extending around the air supply mechanism 10. The movable component 22 has a first matching portion a3, and the first matching portion a3 matches with the first track surface 310, so that when the movable component 22 rotates around the first rotation axis with the air supply mechanism 10, the first matching portion a3 moves along the first track surface 310. The first track surface 310 includes a first section 311 and a second section 312 having a height difference in the first direction. When the first matching portion a3 moves to the first section 311, the movable component 22 is in a first state, and the movable component 22 is matched with the fixed component 21. When the first matching portion a3 moves to the second section 312, the movable component 22 is in a second state, and the movable component 22 is separated from the fixed component 21. In this way, after the battery A is loaded into the movable assembly 22, the first matching portion a3 of the movable assembly 22 is moved from the second section 312 to the first section 311 under the drive of the air supply mechanism 10, so that the movable assembly 22 is matched with the fixed assembly 21, and the battery A on the movable assembly 22 is repeatedly pressurized and released. After the pre-treatment is completed, the first matching portion a3 of the movable assembly 22 is moved from the first section 311 to the second section 312 under the drive of the air supply mechanism 10, so that the movable assembly 22 is separated from the fixed assembly 21. At this time, the battery A on the movable assembly 22 is removed, and a new battery A is loaded onto the movable assembly 22 to facilitate the next pre-treatment.

[0053] It should be noted that, in the process of the air supply mechanism 10 driving the movable component 22 to rotate, the movable component 22 is always supported on the first section 311 or the second section 312 through the first matching portion a3 under the action of gravity. However, in the event of a jam, the movable component 22 cannot move along the first direction under the action of gravity and always remains supported on the first section 311 or the second section 312 through the first matching portion a3, resulting in the movable component 22 being blocked from switching between the first state and the second state. In order to solve the above problem of the movable component 22 being blocked from switching between the first state and the second state, please refer to the embodiment for details. Figure 1 and Figure 2 As shown, the track mechanism 30 also includes a second track plate 32, and the second track plate 32 has a second track surface 320 opposite to the first track surface 310 in the first direction. The movable component 22 has a second matching portion a4, and the second matching portion a4 matches with the second track surface 320. The second track surface 320 includes a first matching segment 321 and a second matching segment 322 arranged in sequence along its extension direction, and the first matching segment 321 and the second matching segment 322 have a height difference in the first direction. When the first matching portion a3 moves to the first segment 311, the second matching portion a4 moves to the first matching segment 321, and the movable component 22 is matched with the fixed component 21; when the first matching portion a3 moves to the second segment 312, the second matching portion a4 moves to the second matching segment 322, and the movable component 22 is separated from the fixed component 21.

[0054] In this way, by utilizing the cooperation between the second matching part a4 and the first matching section 321 or the second matching section 322 of the second track surface 320, the second matching part a4 of the movable component 22 is limited, ensuring that the movable component 22 can always remain supported on the first section 311 or the second section 312 through the first matching part a3, ensuring that the movable component 22 switches between the first state and the second state stably and reliably.

[0055] Optionally, the first mating portion a3 may be a roller, so that rolling friction occurs between the first mating portion a3 and the first track surface 310, so that the first mating portion a3 can roll more smoothly along the first track surface 310 and reduce wear. The second mating portion a4 may also be a roller, so that rolling friction occurs between the second mating portion a4 and the second track surface 320, so that the second mating portion a4 can roll more smoothly along the second track surface 320 and reduce wear.

[0056] See also Figure 3As shown, in the embodiment of the present invention, the liquid injection pre-treatment device further includes a loading mechanism 40 and a unloading mechanism 50. The loading mechanism 40 is arranged corresponding to the second section 312, and is used to provide battery A to the movable assembly 22 that rotates to cooperate with the second section 312. The unloading mechanism 50 is also arranged corresponding to the second section 312, and is used to receive the battery A on the movable assembly 22 that rotates to cooperate with the second section 312. In this way, when the movable assembly 22 rotates around the first rotation axis with the air supply mechanism 10, when the first matching portion a3 of the movable assembly 22 cooperates with the second section 312, the movable assembly 22 is separated from the fixed assembly 21 at this time, and the unloading mechanism 50 first unloads the movable assembly 22, that is, removes the battery A on the movable assembly 22, and then, the loading mechanism 40 loads the movable assembly 22, that is, loads a new battery A onto the movable assembly 22, so that when the first matching portion a3 of the movable assembly 22 moves to the first section 311, the battery A can be pre-treated again.

[0057] Furthermore, the loading mechanism 40 is arranged corresponding to the downstream end of the second section 312, and the unloading mechanism 50 is arranged corresponding to the upstream end of the second section 312. In this way, it is ensured that when the movable component 22 rotates around the first rotation axis with the air supply mechanism 10 so that the first matching portion a3 moves along the second section 312, the movable component 22 first passes through the unloading mechanism 50 and unloads through the unloading mechanism 50, and then passes through the loading mechanism 40 and loads through the loading mechanism 40.

[0058] Specifically, in the implementation, the feeding mechanism 40 includes a first mounting plate, a first rotating shaft 41, a feeding turntable 42 and a feeding guide plate 43. The first rotating shaft 41 is rotatably connected to the first mounting plate around the second rotating axis, and the feeding turntable 42 is mounted on the first rotating shaft 41 to rotate around the second rotating axis synchronously with the first rotating shaft 41. The feeding guide plate 43 is mounted on the first mounting plate, and a feeding channel a5 for battery A to pass through is formed between the feeding guide plate 43 and the periphery of the feeding turntable 42. One end of the feeding channel a5 is docked with the upstream conveying line for conveying battery A, and the other end of the feeding channel a5 is docked with the moving component 22 passing by, so that the battery A conveyed by the upstream conveying line can enter the feeding channel a5 under the action of the feeding guide plate 43, and the battery A is output from the other end of the feeding channel a5 driven by the feeding turntable 42, and then enters the moving component 22 passing by (at this time, the moving component 22 is in the second state), thereby realizing feeding.

[0059] Optionally, the periphery of the loading turntable 42 has a limiting notch, so that when the battery A output from the upstream conveyor line enters the loading channel a5 under the action of the loading guide plate 43, the battery A can be limited in the limiting notch, and then the battery A limited in the limiting notch can be driven by the loading turntable 42 to be output from the other end of the loading channel a5 and enter the movable component 22 passing through.

[0060] Specifically, in the implementation, the unloading mechanism 50 includes a second mounting plate, a second rotating shaft 51, an unloading turntable 52 and an unloading guide plate 53. The second rotating shaft 51 is rotatably connected to the second mounting plate around the third rotation axis, and the unloading turntable 52 is mounted on the second rotating shaft 51 to rotate synchronously around the third rotation axis with the second rotating shaft 51. The unloading guide plate 53 is mounted on the second mounting plate, and a unloading channel a6 for battery A to pass through is formed between the unloading guide plate 53 and the periphery of the unloading turntable 52. One end of the unloading channel a6 is docked with the moving component 22 passing through, and the other end of the unloading channel a6 is docked with the downstream conveying line for conveying battery A, so that the battery A on the moving component 22 passing through can enter the unloading channel a6 under the action of the unloading guide plate 53, and the battery A is output from the other end of the unloading channel a6 driven by the unloading turntable 52 and enters the downstream conveying line, thereby realizing unloading.

[0061] Optionally, the periphery of the unloading turntable 52 has a limiting notch, so that the battery A on the passing movable component 22 can be limited in the limiting notch when entering the unloading channel a6 under the action of the unloading guide plate 53, and then the battery A limited in the limiting notch can be output from the other end of the unloading channel a6 driven by the unloading turntable 52 and enter the downstream conveyor line.

[0062] Optionally, the second rotation axis is parallel to the third rotation axis, and both are parallel to the first rotation axis. It should be noted that, in order to simplify the structure, the first mounting plate and the second mounting plate can be the same mounting plate 60 .

[0063] See also Figure 4 As shown, in an embodiment of the present invention, the air supply mechanism 10 includes a mounting seat, a rotating shaft 11, a rotating disk 12 and an air distributor seat 13, the rotating shaft 11 is fixedly mounted on the mounting seat, and the axis of the rotating shaft 11 is the above-mentioned first rotating axis. The rotating disk 12 is rotatably mounted on the rotating shaft 11, so that the rotating disk 12 can rotate around the first rotating axis. The air distributor seat 13 is mounted on the rotating disk 12, and has a first cavity 131, a second cavity 132 and an air filling hole 133 connected to the first cavity 131, and the air filling hole 133 is connected to an external air source. The above-mentioned air outlet a1 and air inlet a2 are both opened in the air distributor seat 13, and the air outlet a1 is connected to the first cavity 131, and the air inlet a2 is connected to the second cavity 132. One end of the rotating shaft 11 is located in the second cavity 132, and an exhaust channel 111 is opened that passes through the opposite ends of the rotating shaft 11. In this way, the gas from the external gas source enters the first cavity 131 from the gas filling hole 133, and the gas in the first cavity 131 enters the gas filling cavity a7 of the fixing assembly 21 through the gas outlet hole a1, so as to pressurize the battery A. The gas in the gas filling cavity a7 enters the second cavity 132 through the gas inlet hole a2, so as to relieve the pressure of the battery A. The gas in the second cavity 132 is discharged through the exhaust channel 111.

[0064] In an embodiment of the present invention, the liquid injection pre-treatment device also includes a driving mechanism, which is used to drive the air supply mechanism 10 to rotate around the first rotation axis, thereby driving the fixed component 21 and the movable component 22 to rotate around the first rotation axis together with the air supply mechanism 10.

[0065] Specifically, the driving mechanism is installed on the mounting seat and is drivingly connected to the rotating disk 12 to drive the rotating disk 12 to rotate around the rotating shaft 11. Further, the driving mechanism is also drivingly connected to the first rotating shaft 41 and the second rotating shaft 51 to drive the first rotating shaft 41 and the second rotating shaft 51 to rotate, so as to facilitate loading and unloading. In this way, the air supply mechanism 10, the loading mechanism 40 and the unloading mechanism 50 share a driving mechanism, which is conducive to simplifying the structure and reducing the equipment cost. It can be understood that the mounting seat is fixed relative to the mounting plate 60.

[0066] Specifically in the embodiment, the driving mechanism includes a driving member and a transmission gear set, a first driven gear 14 is installed on the rotating disk 12, a second driven gear is installed on the first rotating shaft 41, and a third driven gear is installed on the second rotating shaft 51. The driving member is in transmission connection with the transmission gear set, and the transmission gear set is meshed with the first driven gear 14, the second driven gear and the third driven gear, so that the driving member can simultaneously drive the rotating disk 12, the first rotating shaft 41 and the second rotating shaft 51 to rotate.

[0067] It should be noted that the specific structure of the transmission gear set can be reasonably designed according to the required rotation speeds of the rotating disk 12, the first rotating shaft 41 and the second rotating shaft 51, and is not limited here.

[0068] See also Figure 5 and Figure 6 As shown, in an embodiment of the present invention, the fixing assembly 21 includes an air filling seat 214 connected to the air supply mechanism 10, and the air filling seat 214 has an air filling cavity a7 and a battery inlet a8. The air filling seat 214 also has an air inlet a9 and an air outlet a10 both connected to the air filling cavity a7. The air inlet a9 is connected to the air outlet a1, and the air outlet a10 is connected to the air inlet a2. In this way, the gas in the first cavity 131 can enter the air filling cavity a7 through the air outlet a1 and the air inlet a9 in turn, and the gas in the air filling cavity a7 can enter the second cavity 132 through the air outlet a10 and the air inlet a2 in turn.

[0069] Specifically in the embodiment, the fixed assembly 21 also includes a fixed air seat 211 and a first control valve 212a and a second control valve 212b both mounted on the fixed air seat 211. The fixed air seat 211 has a first air passage a11 connected to the air inlet a9 and a second air passage a12 connected to the air outlet a10. The air inlet end of the first control valve 212a is connected to the air outlet a1, and the air outlet end of the first control valve 212a is connected to the first air passage a11. The air inlet end of the second control valve 212b is connected to the second air passage a12, and the air outlet end of the second control valve 212b is connected to the air inlet a2.

[0070] In this way, when it is necessary to pressurize the battery A, the first control valve 212a is opened and the second control valve 212b is closed, so that the gas in the first cavity 131 sequentially passes through the gas outlet a1, the first control valve 212a, the first air channel a11 and the air inlet a9 to enter the gas chamber a7, thereby pressurizing the battery A in the gas chamber a7. When it is necessary to relieve the pressure of the battery A, the first control valve 212a is closed and the second control valve 212b is opened, so that the gas in the gas chamber a7 sequentially passes through the gas outlet a10, the second air channel a12, the second control valve 212b, the air inlet a2, the second cavity 132 and the exhaust channel 111, and then is discharged from the exhaust channel 111, thereby relieving the pressure of the battery A in the gas chamber a7. Optionally, the first control valve 212a and the second control valve 212b can be solenoid valves.

[0071] It should be noted that, by utilizing the gas path structure of the first control valve 212a and the second control valve 212b, the pressurization and pressure relief controls are separated, thereby accelerating the speed of pressurization and pressure relief.

[0072] Furthermore, the fixing component 21 also includes a pressure gauge 213, which is connected to the first airway a11 through a connecting pipe, so that the air pressure in the inflation chamber a7 can be detected by the pressure gauge 213, and then the air pressure value detected by the pressure gauge 213 can be used to determine how many times the battery A in the inflation chamber a7 needs to be pressurized and depressurized, and whether the pressurization and depressurization process is stable and reliable can be determined.

[0073] In order to prevent the insulating gasket on the battery cell inside the battery A from being separated from the battery cell or causing position deviation during the pressurization and pressure relief process, specifically in the embodiment, the fixing assembly 21 also includes a clamping structure 215, which is used to clamp the insulating gasket of the battery A located in the inflation cavity a7, thereby preventing the insulating gasket from being separated from the battery cell or causing position deviation during the pressurization and pressure relief process.

[0074] The clamping structure 215 includes a gland seat 2151, a pressure rod 2152 and a third elastic member 2153. The inflatable seat 214 also has a mounting hole connected to the inflatable chamber a7. The gland seat 2151 is mounted on the mounting hole, one end of the pressure rod 2152 is movably connected to the gland seat 2151, and the other end of the pressure rod 2152 penetrates the inflatable chamber a7 through the mounting hole. The opposite ends of the third elastic member 2153 are respectively abutted against the gland seat 2151 and the pressure rod 2152 to provide a pre-tightening force that moves the pressure rod 2152 into the inflatable chamber a7. In this way, the pressure rod 2152 is used to compress the insulating gasket of the battery A entering the inflatable chamber a7, and under the buffering effect of the third elastic member 2153, it is helpful to avoid the pressure rod 2152 from crushing the battery cell and the insulating gasket of the battery A. Optionally, the third elastic member 2153 can be a spring.

[0075] Furthermore, the pressure rod 2152 has a vent hole 2154, one end of which is connected to the gas-filling chamber a7, and the other end of which is connected to the inner chamber of the pressure cover seat 2151, so that the air pressure of the inner chamber of the pressure cover seat 2151 is equal to that of the gas-filling chamber a7, that is, to avoid the pressure difference between the inner chamber of the pressure cover seat 2151 and the gas-filling chamber a7 and hindering the movement of the pressure rod 2152. In this way, by selecting a suitable third elastic member 2153, the pressure of the pressure rod 2152 on the battery cell of the battery A can meet the requirements, avoiding the phenomenon of excessive pressure that damages the battery cell or insufficient pressure that causes insufficient compression.

[0076] It should be noted that the rotation of the pressure rod 2152 may easily damage the insulating gasket and the tabs on the battery cell. In order to prevent the pressure rod 2152 from rotating, the fixing assembly 21 further includes a stopper, the pressure rod 2152 has a stopper groove extending longitudinally along its moving direction, the stopper is arranged on the pressure cover seat 2151, and one end of the stopper is inserted into the stopper groove of the pressure rod 2152, so as to prevent the pressure rod 2152 from rotating and not hinder the movement of the pressure rod 2152. Optionally, the stopper can be a stopper screw.

[0077] In an embodiment of the present invention, the movable component 22 includes a sliding structure 221 and a battery positioning structure 222. The sliding structure 221 is movably connected to the air supply mechanism 10 along the first direction, and cooperates with the track mechanism 30, so that when the sliding structure 221 rotates around the first rotation axis together with the air supply mechanism 10, the track mechanism 30 can drive the sliding structure 221 to move along the first direction. The battery positioning structure 222 is installed on the side of the sliding structure 221 facing the fixed component 21, and the battery positioning structure 222 is used to position the battery A. In this way, the battery A loaded by the loading mechanism 40 is positioned on the battery positioning structure 222, and the battery positioning structure 222 moves along the first direction driven by the sliding structure 221, so that the battery A on the battery positioning structure 222 can enter the inflation chamber a7 for pressurization and depressurization, and can also exit from the inflation chamber a7.

[0078] Specifically in the embodiment, the battery positioning structure 222 includes a floating seat 2222, a first elastic member 2223 and a battery positioning seat 2221. The floating seat 2222 is movably connected to the second sliding seat 2212 of the sliding structure 221 along the first direction, and the opposite ends of the first elastic member 2223 are respectively in contact with the floating seat 2222 and the second sliding seat 2212 of the sliding structure 221, thereby providing a preload force that causes the floating seat 2222 to move toward the fixed assembly 21 along the first direction. The battery positioning seat 2221 is installed on the side of the floating seat 2222 facing the fixed assembly 21, and is used to position the battery A. In this way, when the pressing structure 215 presses against the battery A, the battery A is forced to squeeze the first elastic member 2223, so that the battery A can float in the first direction, further preventing the pressing structure 215 from crushing the battery cell or insulating gasket of the battery A. Optionally, the first elastic member 2223 can be a spring.

[0079] Furthermore, a magnetic member 2225 is installed on the battery positioning seat 2221, so that the magnetic member 2225 is used to absorb and fix the battery A to prevent the battery A from shaking. Specifically, the magnetic member 2225 can be a magnet.

[0080] Specifically in the embodiment, the battery positioning structure 222 further includes a guide rod 2224, which is connected to the second slide seat 2212 described below of the sliding structure 221, and the floating seat 2222 is slidably matched with the guide rod 2224, so that the movement of the floating seat 2222 is guided by the guide rod 2224, so that the movement of the floating seat 2222 is more stable. Of course, in other embodiments, the guide rod 2224 can also be connected to the floating seat 2222, and slidably matched with the second slide seat 2212 described below of the sliding structure 221, and can also guide the movement of the floating seat 2222, which is not limited here.

[0081] Specifically in the embodiment, the sliding structure 221 includes a first slide 2211, a second slide 2212 and a second elastic member 2213. The first slide 2211 and the second slide 2212 are both movably connected to the air supply mechanism 10 along the first direction, and the second slide 2212 is located between the first slide 2211 and the fixed assembly 21, and the opposite ends of the second elastic member 2213 are respectively in contact with the first slide 2211 and the second slide 2212 to provide a pre-tightening force for the second slide 2212 to move toward the fixed assembly 21 relative to the first slide 2211. The battery positioning structure 222 is arranged on the side of the second slide 2212 facing the fixed assembly 21, and the first slide 2211 cooperates with the track mechanism 30. Further, the above-mentioned first matching portion a3 and the above-mentioned second matching portion a4 are installed on the first slide 2211, and are used to cooperate with the first track surface 310 and the second track surface 320 respectively.

[0082] In this way, driven by the track mechanism 30, the first slide 2211 can move along the first direction close to the inflatable seat 214 of the fixed component 21, thereby driving the second slide 2212 to move along the first direction close to the inflatable seat 214 of the fixed component 21, so that the battery positioning structure 222 and the battery A on the second slide 2212 enter the inflatable cavity a7 from the battery entrance a8 of the inflatable seat 214, and the second slide 2212 and the inflatable seat 214 of the fixed component 21 are against each other. As the second slide 2212 continues to move toward the fixed component 21, the second elastic member 2213 is compressed. The elastic force applied to the second slide 2212 by the compression of the second elastic member 2213 keeps the second slide 2212 and the inflatable seat 214 of the fixed component 21 tightly pressed, thereby ensuring the sealing effect of the second slide 2212 sealing the battery entrance a8 of the inflatable seat 214. Optionally, the second elastic member 2213 can be a spring.

[0083] Furthermore, a sealing bottom cover 2216 is installed on the side of the second sliding seat 2212 facing the fixing assembly 21 , so that the sealing bottom cover 2216 abuts against the inflation seat 214 of the fixing assembly 21 , thereby sealing the battery inlet a8 on the inflation seat 214 .

[0084] Furthermore, a mounting groove is provided on one side of the first slide 2211 facing the second slide 2212, a spring seat 2214 is provided in the mounting groove, and the second elastic member 2213 is provided on the spring seat 2214. A spring pressure plate 2215 is provided on one side of the second slide 2212 facing the first slide 2211, and the spring pressure plate 2215 abuts against the second elastic member 2213. In this way, the second elastic member 2213 is mounted firmly and stably.

[0085] Specifically in the embodiment, the inflation and deflation mechanism 20 also includes a fixed plate 23 and a slide rail 231 disposed on the fixed plate 23. The fixed plate 23 is fixedly connected to the rotating disk 12 of the air supply mechanism 10, and the slide rail 231 extends longitudinally along the first direction. The inflation seat 214 is fixedly connected to the fixed plate 23, so that the fixed component 21 rotates with the rotating disk 12 and is fixed relative to the rotating disk 12 in the first direction. A first slider 232 is disposed on the first slide seat 2211, and a second slider 233 is disposed on the second slide seat 2212. Both the first slider 232 and the second slider 233 are slidably matched with the slide rail 231, so that the movable component 22 can rotate with the rotating disk 12 and can reciprocate relative to the fixed component 21 along the first direction.

[0086] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A liquid injection pre-treatment device, characterized in that: include: An air supply mechanism, having an air outlet and an air inlet; and A gas charging and discharging mechanism, comprising a fixed component and a movable component for carrying a battery, wherein the fixed component is fixed relative to the gas supply mechanism and has a gas charging cavity communicated with the gas outlet and the gas inlet, and a battery inlet communicated with the gas charging cavity, wherein the gas supply mechanism is used to input gas into the gas charging cavity through the gas outlet, and is also used to recover gas in the gas charging cavity through the gas inlet, wherein the movable component is located at a side of the fixed component having the battery inlet, and can be moved relative to the fixed component to be mated with or separated from the fixed component; Wherein, when the movable component is matched with the fixed component, the battery on the movable component enters the inflation cavity through the battery entrance, and the movable component closes the battery entrance; when the movable component is separated from the fixed component, the battery on the movable component exits the inflation cavity through the battery entrance.

2. The liquid injection pretreatment device according to claim 1, characterized in that: The air supply mechanism is rotatably arranged around a first rotation axis, the fixed component and the movable component are arranged on the air supply mechanism along a first direction parallel to the first rotation axis, and the movable component is movable relative to the fixed component along the first direction; The liquid injection pre-treatment device also includes a track mechanism that cooperates with the movable component. When the air supply mechanism rotates around the first rotation axis, it drives the movable component to move along the track mechanism. The track mechanism drives the movable component to move along the first direction to a first state in which it is matched with the fixed component and a second state in which it is separated from the fixed component.

3. The liquid injection pretreatment device according to claim 2, characterized in that: The track mechanism comprises a first track plate, the first track plate has a first track surface extending around the air supply mechanism, the movable assembly has a first matching portion, the first matching portion matches with the first track surface; The first track surface includes a first section and a second section having a height difference in the first direction. When the first matching portion moves to the first section, the movable component is in the first state. When the first matching portion moves to the second section, the movable component is in the second state.

4. The liquid injection pretreatment device according to claim 3, characterized in that: The track mechanism further includes a second track plate, the second track plate having a second track surface opposite to the first track surface in the first direction, the movable component having a second matching portion, the second matching portion matching with the second track surface; The second track surface includes a first mating section and a second mating section arranged sequentially along its extension direction, and the first mating section and the second mating section have a height difference in the first direction; when the first mating portion moves to the first section, the second mating portion moves to the first mating section; when the first mating portion moves to the second section, the second mating portion moves to the second mating section.

5. The liquid injection pre-treatment device according to claim 3, characterized in that: The liquid injection pre-treatment device also includes a loading mechanism and a unloading mechanism arranged corresponding to the second section; The loading mechanism is used to provide batteries to the movable assembly rotated to cooperate with the second section, and the unloading mechanism is used to receive the batteries on the movable assembly rotated to cooperate with the second section.

6. The liquid injection pre-treatment device according to claim 5, characterized in that: The feeding mechanism is arranged corresponding to the downstream end of the second section, and the unloading mechanism is arranged corresponding to the upstream end of the second section.

7. The liquid injection pre-treatment device according to claim 2, characterized in that: The air supply mechanism includes a rotating shaft, a rotating disk and an air distributor, the rotating disk is rotatably mounted on the rotating shaft, the axis of the rotating shaft is the first rotating axis, the air distributor is mounted on the rotating disk, and has a first cavity, a second cavity and an air filling hole communicating with the first cavity, the air filling hole is used to communicate with an external air source; The air outlet and the air inlet are both provided on the air dividing seat, and the air outlet is communicated with the first cavity, and the air inlet is communicated with the second cavity; One end of the rotating shaft is located in the second cavity, and an exhaust passage is provided which passes through two opposite ends of the rotating shaft.

8. The liquid injection pre-treatment device according to claim 2, characterized in that: The movable component includes a sliding structure and a battery positioning structure for positioning the battery. The sliding structure is movably connected to the air supply mechanism along the first direction and cooperates with the track mechanism. The battery positioning structure is installed on the side of the sliding structure facing the fixed component.

9. The liquid injection pre-treatment device according to claim 8, characterized in that: The battery positioning structure includes a floating seat, a first elastic member and a battery positioning seat. The floating seat is movably connected to the sliding structure along the first direction. The opposite ends of the first elastic member are respectively abutted against the floating seat and the sliding structure. The battery positioning seat is installed on the side of the floating seat facing the fixed component.

10. The liquid injection pre-treatment device according to claim 8, characterized in that: The sliding structure includes a first sliding seat, a second sliding seat and a second elastic member; The first slide and the second slide are both movably connected to the air supply mechanism along the first direction, and the second slide is located between the first slide and the fixed assembly, and opposite ends of the second elastic member are respectively in contact with the first slide and the second slide; The battery positioning structure is arranged on a side of the second slide seat facing the fixing assembly, and the first slide seat cooperates with the track mechanism.

11. The liquid injection pretreatment device according to claim 1, characterized in that: The fixing assembly includes an air filling seat connected to the air supply mechanism, and the air filling seat has the air filling cavity and the battery inlet; The inflation seat also has an air inlet and an air outlet both connected to the inflation cavity, the air inlet is connected to the air outlet, and the air outlet is connected to the air inlet.

12. The liquid injection pre-treatment device according to claim 11, characterized in that: The fixed assembly also includes a fixed air seat and a first control valve and a second control valve both mounted on the fixed air seat, the fixed air seat having a first air passage connected to the air inlet and a second air passage connected to the air outlet, an air inlet end of the first control valve connected to the air outlet, an air outlet end of the first control valve connected to the first air passage, an air inlet end of the second control valve connected to the second air passage, and an air outlet end of the second control valve connected to the air inlet.

13. The liquid injection pre-treatment device according to claim 11, characterized in that: The fixing assembly further comprises a clamping structure, which comprises a pressure cover seat, a pressure rod and a third elastic member; The inflation seat also has a mounting hole connected to the inflation cavity, the pressure cover seat is installed in the mounting hole, one end of the pressure rod is movably connected to the pressure cover seat, and the other end of the pressure rod penetrates into the inflation cavity through the mounting hole, and the opposite ends of the third elastic member are respectively abutted against the pressure cover seat and the pressure rod.

14. The liquid injection pre-treatment device according to claim 13, characterized in that: The pressing rod has a vent hole, one end of the vent hole is communicated with the inflation cavity, and the other end of the vent hole is communicated with the inner cavity of the pressure cover seat.

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