Valve opening device and baking equipment

Abstract

The embodiment of the utility model discloses a valve opening device and baking equipment, and relates to the technical field of battery production equipment. The valve opening device comprises a base, a movable mounting piece, a valve opening unit and an air spring. The movable mounting piece and the base are arranged at an interval. The valve opening unit is arranged on the side, away from the base, of the movable installation piece. And the air spring is connected with the base and the movable mounting piece. The air spring can be used for driving the movable installation part to be away from or close to the base. According to the valve opening device, the air spring is adopted to drive the valve opening unit to open the switch valve, the air spring has the characteristic of high temperature resistance, in the high-temperature and vacuum environment, the air spring provides driving force through expansion and contraction of the air bag of the air spring, the integrity is better, and therefore the good air tightness is achieved; the possibility of generating a leakage problem is relatively low, so that the valve opening unit can be stably driven to open the switch valve of the battery, namely, the reliability of the valve opening device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production equipment, and in particular to a valve opening device and baking equipment. Background Art

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

[0003] During the production process of batteries, the battery cells need to be placed in a baking chamber for baking to reduce the water content of the battery cells. In the related art, a valve opening device is used to open the switch valve of the battery cell in the baking chamber. However, the reliability of the valve opening device is relatively poor. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a valve opening device and a baking device, aiming to improve the reliability of the valve opening device.

[0005] To achieve the above objectives, in a first aspect, an embodiment of the present application provides a valve opening device, comprising:

[0006] Pedestal;

[0007] A movable mounting member is spaced apart from the base;

[0008] A valve opening unit is arranged on a side of the movable mounting member away from the base;

[0009] An air spring is connected to both the base and the movable mounting member, and the air spring can be used to drive the movable mounting member to move away from or closer to the base.

[0010] In the above technical solution, an air spring is used to drive the valve opening unit to open the switch valve. The air spring has the characteristics of high temperature resistance. In a high temperature and vacuum environment, the air spring provides driving force through the expansion and contraction of its airbag, and has better integrity, thus having better air tightness, and the possibility of leakage problems is relatively low, thereby being able to stably drive the valve opening unit to open the switch valve of the battery, that is, improving the reliability of the valve opening device. In addition, multiple valve opening units can be set on the movable mounting part, and the movable mounting part is driven by the air spring to move, so as to drive all the valve opening units to move synchronously to the valve opening position, which is conducive to realizing the rapid and synchronous opening of all the switch valves of the battery.

[0011] In one embodiment, the valve opening device also includes a first elastic return member, the air spring drives the movable mounting member away from the base, the first elastic return member generates elastic deformation, and the first elastic return member restores the elastic deformation to drive the movable mounting member close to the base.

[0012] In the above technical solution, by setting the first elastic return member, during the exhaust process of the air spring, the first elastic return member provides most of the driving force for driving the movable mounting member to return to its original position, which is beneficial for the movable mounting member to return to its original position, and further beneficial for the switch valve to switch to the closed valve state smoothly, thereby improving the reliability of the valve opening device.

[0013] In one embodiment, the valve opening device further includes a frame, and the base is detachably connected to the frame.

[0014] In the above technical solution, by arranging the base and the frame in a detachable connection, the frame can be stably set in the baking chamber of the baking oven, and the other parts of the valve opening device except the frame can be moved out of the baking chamber, and maintenance and replacement can be carried out outside the baking chamber, thereby improving the maintenance and replacement efficiency of the valve opening device, and there is no need to operate in a narrow baking chamber, which also protects the safety of the operator.

[0015] In one embodiment, the frame includes a positioning rod and a first limiting member mounted on the positioning rod, a positioning hole is provided on the base, a portion of the positioning rod is passed through the positioning hole, and along the extension direction of the positioning rod, the wall surface on one side of the base abuts against the first limiting member.

[0016] In the above technical solution, an axial hole positioning cooperation is adopted between the base and the positioning rod, so as to position the installation of the base on the positioning rod, which is beneficial to improve the installation efficiency of the base. At the same time, the first limit member can limit the installation position of the base on the positioning rod, thereby improving the installation stability of the base on the positioning rod.

[0017] In one embodiment, the frame further includes a second position-limiting member detachably disposed on the positioning rod, and the first position-limiting member and the second position-limiting member clamp the base therebetween.

[0018] In the above technical solution, the two opposite ends of the base along the extension direction of the positioning rod are respectively limited by the first limiting member and the second limiting member, which further improves the installation stability of the base on the frame.

[0019] In one embodiment, the first limiting member is movable along an extending direction of the positioning rod.

[0020] In the above technical solution, by movably arranging the first limit member on the positioning rod along the extension direction of the positioning rod, the installation position of the base on the positioning rod can be easily adjusted, and the valve opening device can adapt to more types of batteries, thereby improving the versatility of the valve opening device.

[0021] In one embodiment, the valve opening unit can move closer to or farther away from the movable mounting member under the action of an external force.

[0022] In the above technical solution, by setting the valve opening unit to be able to move closer to or farther away from the movable mounting part under the action of external force, the height difference between the switch valves of the battery is accommodated, thereby improving the reliability of the valve opening device.

[0023] In one embodiment, the valve opening unit includes a guide column and a second elastic return member, one end of the guide column is movably arranged on the movable mounting member, and the other end is a free end;

[0024] The free end can move toward the side close to the movable mounting member under the action of external force, and the second elastic reset member generates elastic deformation, and the second elastic reset member restores the elastic deformation to drive the free end to move toward the side away from the movable mounting member.

[0025] In the above technical solution, the cooperation between the second elastic reset member and the guide column facilitates the reset of the free end of the guide column. At the same time, when the free end of the guide column moves toward the side close to the movable mounting member, the second elastic reset member can also provide a certain buffering effect, thereby improving the reliability of the valve opening unit.

[0026] In one embodiment, the valve opening unit further includes a flexible pressure head, and the flexible pressure head covers the free end.

[0027] In the above technical solution, by covering the free end of the guide column with a flexible pressure head, when the valve opening unit touches the switch valve during the process of opening the switch valve, the valve opening unit and the switch valve are in flexible contact, which is beneficial to reduce the probability of damage to the switch valve.

[0028] In a second aspect, an embodiment of the present application provides a baking device for producing a battery, wherein the battery includes a battery cell, the battery cell includes a switch valve, and the baking device includes:

[0029] A baking oven, comprising a baking cavity, wherein the baking cavity is used to accommodate batteries;

[0030] The valve opening device described in any of the above embodiments is arranged in the baking chamber, and the valve opening unit is used to open the switch valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1This is a schematic diagram of the structure of a baking device according to an embodiment of the present application, wherein the diagram shows a schematic diagram of the coordination structure of the baking device and the battery during the process of using the baking device in producing the battery;

[0032] Figure 2 This is a structural schematic diagram of a valve opening device according to an embodiment of the present application from a first perspective;

[0033] Figure 3 This is a structural schematic diagram of a valve opening device according to an embodiment of the present application from a second viewing angle;

[0034] Figure 4 This is a schematic structural diagram of a valve opening device according to an embodiment of the present application from a third perspective; wherein the frame of the valve opening device is not shown in the figure;

[0035] Figure 5 This is a structural schematic diagram of a valve opening device according to an embodiment of the present application from a fourth perspective;

[0036] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure at AA in the figure, wherein the first plate body is not shown.

[0037] Description of Reference Numerals

[0038] 100, baking equipment; 10, valve opening device; 11, base; 11a, positioning hole; 12, movable mounting part; 121, first plate; 121a, waist-shaped hole; 122, second plate; 122a, mounting groove; 13, valve opening unit; 131, guide column; 131a, free end; 132, second elastic return member; 133, flexible pressure head; 134, second bushing; 14, air spring; 15, first elastic return member; 16, frame; 161, positioning rod; 162, second limit member; 163, first limit member; 164, first bushing; 20, baking oven; 20a, baking cavity; 200, battery; 210, battery cell; 210a, switch valve. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and are therefore only used as examples, and the protection scope of the present application cannot be limited by this. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0040] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "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, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0045] Below, this application is described in detail.

[0046] The valve opening device and baking equipment provided in the embodiments of the present application are both used for the production of the battery of the present application. In order to make the valve opening device and baking equipment of the present application clearer, the battery of the present application is first introduced before describing the valve opening device and baking equipment of the present application.

[0047] The battery provided in the embodiments of the present application can be used alone. Multiple batteries can also be grouped together and used as a battery pack. The battery and the battery pack can be used in, but are not limited to, electrical devices. Electrical devices include, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, vehicles, ships, or spacecraft, etc. Among them, spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0048] Taking the example of a vehicle as an electrical device in one embodiment of the present application, the vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery is provided inside the vehicle, and the battery may be provided at the bottom of the vehicle or at the front or rear of the vehicle. The battery can be used to power the vehicle, for example, the battery can be used as an operating power source for the vehicle. In some embodiments, the battery can be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0049] The battery may be a lithium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, or a lithium-sulfur battery, etc., which is not limited in the embodiments of the present application.

[0050] The battery includes at least one battery cell. The battery cell is the energy storage component of the battery. The battery also includes a battery monitoring and management device for monitoring the power level of the battery cell.

[0051] In a battery, there can be multiple battery cells, which can be connected in series, in parallel, or in a hybrid connection. A hybrid connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a hybrid connection; of course, a battery can also be a battery module formed by connecting multiple battery cells in series, in parallel, or in a hybrid connection, and then multiple battery modules are connected in series, in parallel, or in a hybrid connection to form a whole.

[0052] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0053] The battery cell may be a cylindrical battery cell, a prismatic battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell or a multi-prismatic battery cell, and the multi-prismatic battery cell is, for example, a hexagonal battery cell, etc., and the present application has no particular limitation.

[0054] The internal cavity of the battery cell is used to place the electrode assembly and the electrolyte. For example, the battery cell includes a shell, an electrode assembly and an electrolyte, and the electrode assembly and the electrolyte are placed in the shell. The shell is used to encapsulate components such as the electrode assembly and the electrolyte.

[0055] The battery cell provided in the embodiment of the present application also includes a switch valve, which is used to open and close the internal cavity of the battery cell. The internal cavity of the battery cell, that is, the internal cavity of the shell, is used to accommodate the electrode assembly and the electrolyte. During the production process of the battery, the battery cell is placed in the baking chamber of the baking equipment for baking. In the related art, the temperature in the baking oven is relatively high, and the baking oven needs to be evacuated. In a vacuum and high temperature environment, it is difficult for the valve opening device to stably open the switch valve, and the reliability of the valve opening device is relatively low.

[0056] See also Figure 1 In a first aspect, an embodiment of the present application provides a baking device. The baking device 100 is used to produce a battery 200. The battery 200 includes a battery cell 210. The battery cell 210 includes a switch valve 210a. The baking device 100 includes a baking oven 20 and a valve opening device 10 of any embodiment of the present application. The baking oven 20 has a baking cavity 20a. The baking cavity 20a is used to accommodate the battery 200. The valve opening device 10 is arranged in the baking cavity 20a. The valve opening unit 13 is used to open the switch valve 210a.

[0057] The switch valve 210a can be a normally closed switch valve. A normally closed switch valve means that the switch valve 210a remains in a closed state when no external force is applied. In the production process of the battery 200, the battery cell 210 undergoes a baking process and then undergoes a liquid injection process. The liquid injection process refers to injecting electrolyte into the internal cavity of the battery cell 210. During the baking process, the normally closed switch valve can be opened by the valve opening device 10 to facilitate vacuuming the internal cavity of the battery cell 210 in the baking chamber 20a. After the vacuuming is completed, the switch valve 210a can be closed before breaking the vacuum. In this way, the internal cavity of the battery cell 210 is kept in a vacuum state before entering the liquid injection process.

[0058] The shape of the baking oven 20 is not limited. For example, it can be prism-shaped, cylindrical, etc. It has a baking cavity 20a, and the battery 200 is placed in the baking cavity 20a to complete baking.

[0059] At least one side of the baking chamber 20a can be opened, so that the battery 200 can be placed in or taken out from the open side, thereby performing a baking process of a plurality of batteries 200 in a reciprocating manner.

[0060] Of course, at least part of the valve opening device 10 can also be inserted or removed from the open side. In this way, the valve opening unit 13 corresponding to different types of batteries 200 can be replaced, thereby improving the versatility of the baking device 100.

[0061] The valve opening unit 13 is a component of the valve opening device 10 for opening the on-off valve 210 a .

[0062] In the baking device 100 provided in the embodiment of the present application, after the battery 200 is placed in the baking chamber 20a, the baking oven 20 is controlled to be in a relatively closed state, and a valve opening signal is given before vacuuming, and the valve opening unit 13 moves in a direction close to the switch valve 210a and applies a force to the switch valve 210a, thereby switching the switch valve 210a to an open state. After the battery cell 210 is baked, a valve closing signal is given before the vacuum is broken, and the valve opening unit 13 is controlled to move in a direction away from the switch valve 210a, so that each switch valve 210a is switched to a closed valve state.

[0063] Specifically, based on the normally closed switch valve, when the force of the valve opening unit 13 acting on the switch valve 210a is gradually withdrawn, the switch valve 210a can automatically switch to the closed valve state.

[0064] See also Figures 2 to 6 In the second aspect, an embodiment of the present application provides a valve opening device. The valve opening device 10 includes a base 11, a movable mounting part 12, a valve opening unit 13 and an air spring 14. The movable mounting part 12 is spaced apart from the base 11. The valve opening unit 13 is arranged on the side of the movable mounting part 12 away from the base 11. The air spring 14 is connected to both the base 11 and the movable mounting part 12. The air spring 14 can be used to drive the movable mounting part 12 away from or close to the base 11.

[0065] It should be noted that there is no limit to the number of valve opening units 13. Optionally, the number of valve opening units 13 needs to match the number of switch valves 210a. That is, the number of valve opening units 13 is not less than the number of switch valves 210a, so that the valve opening device 10 can open all the switch valves 210a of the battery 200.

[0066] The base 11 is the installation base of the movable installation part 12. During the process of opening and closing the switch valve 210a, the base 11 is in a relatively static state.

[0067] The specific shape of the base 11 is not limited, as long as it can meet the installation requirements of the movable mounting member 12. For example, Figure 3 and Figure 4 As shown, the base 11 may be a square column structure.

[0068] The movable mounting member 12 provides a mounting base for the valve opening unit 13 and is movably arranged relative to the base 11. That is, the movable mounting member 12 carries the valve opening unit 13 away from or close to the base 11, thereby realizing the opening or closing of the switch valve 210a. Specifically, in the embodiment of the present application, the movable mounting member 12 moves to the side away from the base 11 to open the switch valve 210a, and the movable mounting member 12 moves to the side close to the base 11, and the switch valve 210a can be switched to a closed state.

[0069] The specific structure of the movable mounting member 12 is not limited. Figures 1 to 4 As shown, in some embodiments, the movable mounting member 12 includes a first plate body 121 and a second plate body 122, the first plate body 121 is connected to the air spring 14, the second plate body 122 is arranged on the side of the first plate body 121 away from the base 11, and the valve opening unit 13 is arranged on the second plate body 122.

[0070] In this embodiment, a plurality of valve opening units 13 may be provided on each second plate body 122 , so that all valve opening units 13 on each second plate body 122 can be disassembled and assembled from the first plate body 121 together, thereby improving the replacement efficiency of the valve opening units 13 .

[0071] The number of the second plates 122 can also be any number, that is, there can be one or more second plates 122 .

[0072] It should be noted that, in the embodiments of the present application, a plurality refers to any number of two or more than two.

[0073] like Figure 3 and Figure 4 As shown, in some embodiments, a waist-shaped hole 121a can be set on the first plate body 121, and the second plate body 122 can be movably set in the waist-shaped hole 121a. In this way, the second plate body 122 can be fine-tuned on the first plate body 121 to facilitate the valve opening unit 13 to align the switch valve 210a.

[0074] The air spring 14 will expand after being inflated. After the air spring 14 is respectively connected to the base 11 and the movable mounting part 12, since the base 11 is relatively stationary, the air spring 14 can drive the movable mounting part 12 to move to the side away from the base 11 during the inflation process. The air spring 14 will shrink after being exhausted, thereby generating a certain contraction force to drive the movable mounting part 12 to move to the side close to the base 11.

[0075] The air spring 14 has the characteristics of high temperature resistance, good air tightness and timely response.

[0076] The valve opening unit 13 has an initial position and an open valve position. After the air spring 14 is inflated, the valve opening unit 13 is in the open valve position. After the air spring 14 is exhausted, the valve opening unit 13 is in the initial position.

[0077] When the valve opening unit 13 switches from the initial position to the valve opening position, a certain displacement difference can be generated, and the switch valve 210a can be opened by utilizing the displacement difference.

[0078] For example, in the related art, a hydraulic component is used as a driving element to drive the valve opening unit to open the switch valve. The hydraulic component generally includes a rod body and a cylinder body. The rod body is arranged in the cylinder body and needs to move along the cylinder body. The sealing failure problem is prone to occur between the side wall of the cylinder body and the rod body, especially in a vacuum environment. It is more prone to leakage, resulting in the inability of the valve opening unit to stably open the switch valve, and leakage will also cause contamination inside the baking oven.

[0079] The valve opening device 10 of the embodiment of the present application uses an air spring 14 to drive the valve opening unit 13 to open the switch valve 210a. The air spring 14 is resistant to high temperatures. In a high temperature and vacuum environment, the air spring 14 provides driving force through the expansion and contraction of its airbag, and has better integrity, thereby having better air tightness and a relatively low possibility of leakage problems. The valve opening unit 13 can be stably driven to open the switch valve 210a of the battery 200, thereby improving the reliability of the valve opening device 10. In addition, a plurality of valve opening units 13 can be provided on the movable mounting member 12, and the movable mounting member 12 can be driven to move by the air spring 14 to drive all the valve opening units 13 to move synchronously to the valve opening position, thereby facilitating the rapid and synchronous opening of all the switch valves 210a of the battery 200. Please refer to Figures 1 to 5 In one embodiment, the valve opening device 10 further includes a first elastic reset member 15. The air spring 14 drives the movable mounting member 12 away from the base 11, and the first elastic reset member 15 generates elastic deformation. The first elastic reset member 15 restores the elastic deformation to drive the movable mounting member 12 to approach the base 11.

[0080] The first elastic reset member 15 is a component that works by utilizing elasticity. The first elastic reset member 15 can be deformed under the action of an external force, and can return to its original shape after the external force is removed.

[0081] The type of the first elastic reset member 15 is not limited, for example, a tension spring, a compression spring, etc.

[0082] For example, Figures 1 to 3 As shown, the first elastic reset member 15 is a tension spring, and the two ends of the tension spring are respectively connected to the movable mounting member 12 and the base 11. Specifically, when the movable mounting member 12 includes a first plate body 121 and a second plate body 122, one end of the tension spring can be connected to the first plate body 121 or the second plate body 122. The air spring 14 is inflated to push the movable mounting member 12 to move to the side away from the base 11, and the tension spring is stretched to produce elastic deformation. The air spring 14 is exhausted, and the tension spring restores the elastic deformation to drive the movable mounting member 12 to move to the side close to the base 11 and reset.

[0083] Exemplarily, the first elastic reset member 15 can also be a compression spring. When the air spring 14 is inflated to push the movable mounting member 12 to move to the side away from the base 11, the compression spring is compressed to produce elastic deformation. When the air spring 14 is exhausted, the compression spring restores the elastic deformation to drive the movable mounting member 12 to move to the side close to the base 11 and reset.

[0084] During the exhaust process, the driving force generated by the air spring 14 is relatively limited, and it is difficult to drive the movable mounting member 12 to move toward the side close to the base 11 so that the switch valve 210a can be switched to the closed state.

[0085] By providing the first elastic return member 15, during the exhaust process of the air spring 14, the first elastic return member 15 provides most of the driving force for driving the movable mounting member 12 to return to its original position, which is beneficial for the movable mounting member 12 to return to its original position, and further beneficial for the switch valve 210a to switch to the closed valve state smoothly, thereby improving the reliability of the valve opening device 10.

[0086] See also Figures 1 to 5 In one embodiment, the valve opening device 10 further includes a frame 16. The base 11 and the frame 16 are detachably connected.

[0087] The frame 16 provides a mounting base for the base 11 .

[0088] The manner in which the frame 16 and the base 11 are detachably connected is not limited, for example, they may be fastened with fasteners, snap-fitted, etc.

[0089] By arranging the base 11 and the frame 16 in a detachable connection, the frame 16 can be stably set in the baking chamber 20a of the baking oven 20, and the other parts of the valve opening device 10 except the frame 16 can be moved out of the baking chamber 20a, and maintenance and replacement can be carried out outside the baking chamber 20a, thereby improving the maintenance and replacement efficiency of the valve opening device 10, and there is no need to operate in the narrow baking chamber 20a, which also protects the safety of the operator.

[0090] The direction in which the base 11 is disassembled from the frame 16 is the disassembly direction. Optionally, one side of the baking chamber 20a along the disassembly direction can be opened, and the assembly of other components of the valve opening device 10 except the frame 16 can be disassembled from the frame 16 and taken out from the baking chamber 20a along the disassembly direction, which is convenient for operators to operate and further improves the maintenance and replacement efficiency of the valve opening device 10.

[0091] See also Figures 1 to 4In one embodiment, the frame 16 includes a positioning rod 161 and a first stopper 163 sleeved on the positioning rod 161. A positioning hole 11a is provided on the base 11. Part of the positioning rod 161 is inserted into the positioning hole 11a and extends along the extension direction of the positioning rod 161. The wall surface on one side of the base 11 abuts against the first stopper 163.

[0092] The direction in which the base 11 is removed from the frame 16 is the extending direction of the positioning rod 161 .

[0093] The positioning rod 161 is the main structure of the frame 16 and is used to install the base 11 .

[0094] The positioning rod 161 cooperates with the axial hole of the positioning hole 11 a, thereby facilitating installation and positioning of the base 11 .

[0095] In some embodiments, Figure 1 and Figure 2 As shown, the frame 16 also includes a first bushing 164, and the axial hole matching between the positioning rod 161 and the positioning hole 11a is completed by the first bushing 164, thereby reducing the wear between the positioning rod 161 and the positioning hole 11a during the disassembly and assembly process of the base 11, and extending the service life of the valve opening device 10.

[0096] The specific type of the first position-limiting member 163 is not limited. For example, it is a position-limiting block, etc. It is used to limit the installation position of the base 11 on the positioning rod 161. After the base 11 is installed on the positioning rod 161 through the positioning hole 11a, one side of the base 11 abuts against the first position-limiting member 163.

[0097] An axial hole positioning fit is adopted between the base 11 and the positioning rod 161, so as to position the installation of the base 11 on the positioning rod 161, which is beneficial to improve the installation efficiency of the base 11. At the same time, the first limit member 163 can limit the installation position of the base 11 on the positioning rod 161, thereby improving the installation stability of the base 11 on the positioning rod 161.

[0098] See also Figures 1 to 4 In one embodiment, the frame 16 further includes a second stopper 162 detachably disposed on the positioning rod 161. The first stopper 163 and the second stopper 162 clamp the base 11 therebetween.

[0099] There is no limitation on the detachable manner of the second stopper 162 on the frame 16. The second stopper 162 can be designed with reference to the first stopper 163, and the present application will not repeat it here.

[0100] During the process of installing the base 11 on the frame 16, the connection between the second limit member 162 and the positioning rod 161 needs to be released, so that one end of the positioning rod 161 can pass through the positioning hole 11a, one side of the base 11 abuts against the first limit member 163, one end of the positioning rod 161 passes through the positioning hole 11a, and then the second limit member 162 is installed on the positioning rod 161, so that the side of the base 11 facing away from the first limit member 163 abuts against the second limit member 162.

[0101] The two opposite ends of the base 11 along the extension direction of the positioning rod 161 are respectively limited by the first limiting member 163 and the second limiting member 162 , thereby further improving the installation stability of the base 11 on the frame 16 .

[0102] In this embodiment, the second limiting member 162 is disconnected from the positioning rod 161 , so that the base 11 can be disassembled and assembled on the frame 16 .

[0103] See also Figures 1 to 4 In one embodiment, the first limiting member 163 is movable along the extending direction of the positioning rod 161 .

[0104] By movably arranging the first limit member 163 on the positioning rod 161 along the extension direction of the positioning rod 161, the installation position of the base 11 on the positioning rod 161 can be easily adjusted, and the valve opening device 10 can be adapted to more types of batteries 200, thereby improving the versatility of the valve opening device 10.

[0105] See also Figures 1 to 4 In one embodiment, the valve opening unit 13 can move closer to or farther away from the movable mounting member 12 under the action of an external force.

[0106] It can be understood that, in the embodiment of the present application, the external force refers to the reverse force applied by the switch valve 210a to the valve opening unit 13 when the valve opening unit 13 is switched to the valve opening position.

[0107] Specifically, see Figure 4 and Figure 5 The movable mounting member 12 is provided with a mounting groove 122a, and one end of the valve opening unit 13 is movably disposed in the mounting groove 122a.

[0108] It should be noted that when the movable mounting member 12 includes the first plate body 121 and the second plate body 122 , the mounting groove 122 a is disposed on the second plate body 122 .

[0109] It is understandable that since the heights of the various switch valves 210a of the battery 200 may be different, the height difference between each corresponding valve opening unit 13 and the switch valve 210a is also different when the valve opening unit 13 is in the initial position. In other words, the displacement required for each valve opening unit 13 to move to the valve opening position is different, but during the valve opening process, the displacement of the movable mounting part 12 in the direction away from the base 11 is the same.

[0110] In this embodiment, the valve opening unit 13 is configured to be able to move closer to or farther from the movable mounting member 12 under the action of an external force, thereby accommodating the height difference between the switch valves 210a of the battery 200, thereby improving the reliability of the valve opening device 10.

[0111] See also Figure 4 and Figure 5 In one embodiment, the valve opening unit 13 includes a guide column 131 and a second elastic reset member 132. One end of the guide column 131 is movably disposed on the movable mounting member 12, and the other end is a free end 131a. The free end 131a can move toward a side close to the movable mounting member 12 under the action of an external force, and the second elastic reset member 132 generates elastic deformation. The second elastic reset member restores the elastic deformation to drive the free end 131a to move toward a side away from the movable mounting member 12.

[0112] The second elastic return member 132 is similar to the first elastic return member 15 , and will not be described in detail herein.

[0113] The shape of the guide pillar 131 is not limited. Figure 5 As shown, a step surface is provided thereon to facilitate the connection of the second elastic return member 132 .

[0114] The cooperation between the second elastic reset member 132 and the guide column 131 facilitates the reset of the free end 131a of the guide column 131. At the same time, when the free end 131a of the guide column 131 moves toward the side close to the movable mounting member 12, the second elastic reset member 132 can also provide a certain buffering effect, thereby improving the reliability of the valve opening unit 13.

[0115] In some embodiments, Figure 5 As shown, the valve opening unit 13 also includes a second bushing 134, and one end of the guide column 131 is arranged in the installation groove 122a of the movable mounting member 12 through the second bushing 134. In this way, the wear between the guide column 131 and the installation groove 122a is reduced, and the service life of the valve opening device 10 is extended.

[0116] See also Figure 4 and Figure 5 In one embodiment, the valve opening unit 13 further includes a flexible pressure head 133. The flexible pressure head 133 covers the free end 131a.

[0117] The flexible pressure head 133 refers to a component that can produce slight elastic deformation when subjected to force, and its specific material is not limited, such as silicone, rubber, etc.

[0118] The specific method of the flexible pressing head 133 covering the free end 131a is not limited. For example, a groove is provided on the flexible pressing head 133, and the free end 131a is provided in the groove. In this way, the flexible pressing head 133 covers the free end 131a. The groove and the free end 131a can be installed by interference fit, etc., so that the installation of the flexible pressing head 133 is convenient.

[0119] By covering the flexible pressure head 133 at the free end 131a of the guide column 131, when the valve opening unit 13 touches the switch valve 210a during the process of opening the switch valve 210a, the valve opening unit 13 and the switch valve 210a are in flexible contact, which helps to reduce the probability of damage to the switch valve 210a.

[0120] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A valve opening device, It is characterized in that include: Pedestal; A movable mounting member is spaced apart from the base; A valve opening unit is arranged on a side of the movable mounting member away from the base; An air spring is connected to both the base and the movable mounting member, and the air spring can be used to drive the movable mounting member to move away from or closer to the base.

2. The valve opening device according to claim 1, It is characterized in that The valve opening device also includes a first elastic reset member, the air spring drives the movable mounting member away from the base, the first elastic reset member generates elastic deformation, and the first elastic reset member restores the elastic deformation to drive the movable mounting member to approach the base.

3. The valve opening device according to claim 1, It is characterized in that The valve opening device also includes a frame, and the base is detachably connected to the frame.

4. The valve opening device according to claim 3, It is characterized in that The frame includes a positioning rod and a first limiting member sleeved on the positioning rod. A positioning hole is provided on the base. Part of the positioning rod is inserted into the positioning hole. Along the extension direction of the positioning rod, the wall surface on one side of the base abuts against the first limiting member.

5. The valve opening device according to claim 4, It is characterized in that The frame body further includes a second position-limiting member detachably arranged on the positioning rod, and the first position-limiting member and the second position-limiting member clamp the base therebetween.

6. The valve opening device according to claim 4, It is characterized in that The first limiting member is movable along an extending direction of the positioning rod.

7. The valve opening device according to any one of claims 1 to 6, It is characterized in that The valve opening unit can be moved closer to or farther away from the movable mounting member under the action of an external force.

8. The valve opening device according to claim 7, It is characterized in that The valve opening unit comprises a guide column and a second elastic return member, one end of the guide column is movably arranged on the movable mounting member, and the other end is a free end; The free end can move toward the side close to the movable mounting member under the action of external force, and the second elastic reset member generates elastic deformation, and the second elastic reset member restores the elastic deformation to drive the free end to move toward the side away from the movable mounting member.

9. The valve opening device according to claim 8, It is characterized in that The valve opening unit further includes a flexible pressure head, and the flexible pressure head covers the free end.

10. A baking device for producing batteries, It is characterized in that The battery comprises a battery cell, the battery cell comprises a switch valve, and the baking device comprises: A baking oven, comprising a baking cavity, wherein the baking cavity is used to accommodate batteries; The valve opening device according to any one of claims 1 to 9, wherein the valve opening device is arranged in the baking chamber, and the valve opening unit is used to open the switch valve.

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