Baking equipment and production line

Abstract

The utility model relates to the technical field of batteries, and provides baking equipment and a production line, the baking equipment comprises a baking container and a valve opening device, and the baking container comprises a baking cavity for accommodating a battery cell; the valve opening device comprises a driving mechanism and a rack, at least part of the driving mechanism is located outside the baking container, the rack comprises a valve opening piece, the valve opening piece is located in the baking cavity, the driving mechanism can drive the valve opening piece to move from an initial position to a valve opening position, and when the valve opening piece is in the valve opening position, the valve opening piece opens a switch valve of the battery cell. Under the condition that the switch valve of the battery cell needs to be opened, the driving mechanism provides power, the driving mechanism drives the valve opening piece to move to the valve opening position, the valve opening piece can open the switch valve of the battery cell, the valve opening action is completed, and the problem that the switch valve is difficult to open in the baking cavity is solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a baking device and a production line. 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, it is difficult to open the switch valve of the battery cells in the baking chamber. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a baking device and a production line that can open the switch valve of the battery cell.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] An embodiment of the present application provides a baking device, comprising:

[0007] A baking container, comprising a baking cavity for accommodating the battery cell;

[0008] The valve opening device comprises a driving mechanism and a frame, wherein at least a part of the driving mechanism is located outside the baking container, the frame comprises a valve opening member, and the valve opening member is located in the baking cavity, the driving mechanism can drive the valve opening member to move from an initial position to a valve opening position, and when the valve opening member is in the valve opening position, the valve opening member opens the switch valve of the battery cell.

[0009] In the baking device provided by the embodiment of the present application, when it is necessary to open the switch valve of the battery cell, the driving mechanism provides power, and the driving mechanism drives the valve opening member to move to the valve opening position, so that the valve opening member can open the switch valve of the battery cell and complete the valve opening action, thereby solving the problem that it is difficult to open the switch valve in the baking chamber. By setting at least part of the driving mechanism outside the baking container, it is not only possible to avoid the driving mechanism occupying the limited space in the baking chamber, and avoid the environment in the baking chamber affecting the operation of the driving mechanism, thereby improving the operation efficiency of the equipment; the switch state of the switch valve can also be confirmed by detecting the movement state of the driving mechanism, and a special sensor does not need to be set in the baking chamber to detect the switch state of the switch valve, thereby reducing the manufacturing cost of the valve opening device.

[0010] In some embodiments, the frame includes a pushing member and a frame body, the valve opening member is movably connected to the frame body, and the driving mechanism is connected to the pushing member to drive the pushing member to perform linear motion along the front-to-back direction; the pushing member performs linear motion along the front-to-back direction to push the valve opening member to move downward from the initial position to the valve opening position, wherein the front-to-back direction and the up-down direction are perpendicular to each other.

[0011] In this embodiment, the battery cell can be located below the valve opening member, the valve opening position is located below the initial position, and the push member moves linearly along the front-back direction to push the valve opening member to move downward from the initial position to the valve opening position. With such a design, on the one hand, the driving mechanism does not bear the weight of the frame, optimizing the force of the driving mechanism; on the other hand, the size of the frame in the vertical direction can be reduced, so that the frame can be flexibly placed in the limited space of the baking chamber.

[0012] In some embodiments, the pushing member and the valve opening member are separate from each other, and the pushing member moves linearly along the front-rear direction to contact the valve opening member or separate from the valve opening member.

[0013] When the pushing member is in contact with the valve opening member, the force of the driving mechanism can be transmitted to the valve opening member through the pushing member to push the valve opening member to move downward to the valve opening position; when the pushing member is separated from the valve opening member, the force of the driving mechanism cannot be transmitted to the valve opening member through the pushing member, and the force transmission between the pushing member and the valve opening member is disconnected.

[0014] In some embodiments, the valve opening device includes an elastic member, which connects the frame and the valve opening member. When the pushing member and the valve opening member are in a separated state, the elastic force of the elastic member resets the valve opening member to an initial position.

[0015] During the resetting process of the valve opening member, the push member is separated from the valve opening member, and the elastic force of the elastic member does not need to drive the push member to move. The elastic force of the elastic member is used to drive the valve opening member to reset to the initial position, which has high reliability.

[0016] In some embodiments, the valve opening device includes a reversing assembly, and the pusher and the driving shaft of the driving mechanism are connected through the reversing assembly, and the reversing assembly converts the rotation of the driving shaft into a linear motion of the pusher along the front-rear direction.

[0017] The rotation of the drive shaft is converted into a linear motion of the pusher along the front-rear direction by the reversing assembly, so as to achieve the purpose of pushing the valve opening member to move downward.

[0018] In some embodiments, the reversing assembly includes a lead screw and a nut, the lead screw and the nut are threadedly matched, the nut is connected to the pushing member, and the lead screw is connected to the driving shaft.

[0019] The driving shaft drives the lead screw to rotate synchronously, and the nut drives the pusher to move linearly along the front-rear direction.

[0020] In some embodiments, the frame body includes a fixed frame and a connecting arm, and two ends of the connecting arm are rotatably connected to the fixed frame and the valve opening member respectively.

[0021] The valve opening member is pushed forward by the pushing member, and the connecting arm rotates around the hinge point hinged to the fixing frame, so that the valve opening member can move downward.

[0022] In some embodiments, the valve opening member includes a connecting rod and a pressure plate for contacting the switch valve, a plurality of the connecting rods are arranged at intervals along the left-right direction to form a first unit, and the pressure plate extends along the left-right direction and is connected to the bottom of the connecting rod of the first unit, wherein the left-right direction is perpendicular to the up-down direction.

[0023] The pressing plate extends in the left-right direction so that the pressing plate contacts the switch valves of multiple battery cells, so that one pressing plate can open the switch valves of multiple battery cells synchronously. Multiple connecting rods arranged at intervals in the left-right direction of the first unit are connected to the pressing plate, which can strengthen the connection strength of various parts of the pressing plate in the left-right direction, and can drive the pressing plate to move smoothly through the multiple connecting rods of the first unit.

[0024] In some embodiments, a plurality of the pressure plates are spaced apart in the front-to-back direction to form a second unit, and each of the first units corresponds to one of the second units to form a valve opening layer.

[0025] That is to say, the multiple connecting rods of each first unit are connected to the multiple pressing plates of a second unit. In this way, the multiple connecting rods of a first unit can drive the multiple pressing plates of a second unit to move, and a valve opening layer can synchronously open the switch valves of more battery cells, thereby improving efficiency.

[0026] In some embodiments, the plurality of valve-opening layers are arranged in layers and at intervals in the up-down direction.

[0027] A battery cell can be placed under each valve opening layer, and multiple valve opening layers can correspond to multiple battery cells arranged in layers in the up and down direction. In this way, each valve opening layer corresponds to multiple battery cells on the same layer, and multiple valve opening layers correspond to multiple battery cells. The switch valves of more battery cells can be opened at one time, further improving efficiency.

[0028] In some embodiments, the rack is located in the baking cavity.

[0029] In this way, the sealing problem caused by the rack being located outside the baking chamber can be avoided.

[0030] Another aspect of an embodiment of the present application provides a production line for producing batteries, comprising any one of the baking devices described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a baking device in an embodiment of the present application;

[0032] Figure 2 for Figure 1 Schematic diagram of the structure of the middle part;

[0033] Figure 3 This is a schematic structural diagram of a valve opening member, an elastic member and a frame in one embodiment of the present application;

[0034] Figure 4 This is a schematic structural diagram of a valve-opening layer in one embodiment of the present application;

[0035] Figure 5 for Figure 4 A magnified schematic diagram of center A.

[0036] Description of Reference Numerals

[0037] Driving mechanism 1; driving shaft 11; motor 12; frame 2; valve opening member 21; connecting rod 211; first unit 2110; pressing plate 212; second unit 2120; protrusion 2121; pushing member 22; main pushing plate 221; pushing rod 222; frame body 23; fixing frame 231; connecting arm 232; elastic member 3; reversing assembly 4; lead screw 41; nut 42; coupling 5; magnetic fluid seal 6; mounting seat 7; supporting member 8;

[0038] Baking container 100; Baking cavity 100a. DETAILED DESCRIPTION

[0039] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] In the description of the embodiments of the present application, technical terms such as "first" and "second" 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.

[0042] 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.

[0043] Below, this application is described in detail.

[0044] The baking equipment and production line 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 baking equipment and production line of the present application clear, the battery of the present application is first introduced before describing the baking equipment and production line of the present application.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] In a battery, there can be multiple cells, which can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple cells are connected in series and in parallel. Multiple cells can be directly connected in series, in parallel, or in mixed connection; of course, the battery can also be a battery module formed by connecting multiple cells in series, in parallel, or in mixed connection, and then multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole.

[0050] 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.

[0051] 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 there is no particular limitation in the present application.

[0052] The inner 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.

[0053] The battery cell provided in the embodiment of the present application further 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, i.e., 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 cavity 100a of the baking container 100 for baking. During the baking process, it is difficult to open the switch valve due to the complex environment in the baking cavity 100a.

[0054] See also Figure 1 , an embodiment of the present application provides a baking device, the baking device includes a baking container 100 and a valve opening device.

[0055] The baking container 100 includes a baking cavity 100a for accommodating the battery cell. The battery cell is baked in the baking cavity 100a to reduce the water content of the battery cell.

[0056] Please continue reading Figure 1 The valve opening device includes a driving mechanism 1 and a frame 2. At least part of the driving mechanism 1 is located outside the baking container 100. The frame 2 includes a valve opening member 21. The valve opening member 21 is located in the baking chamber 100a. The driving mechanism 1 can drive the valve opening member 21 to move from an initial position to an open valve position. When the valve opening member 21 is in the open valve position, the valve opening member 21 opens the switch valve of the battery cell.

[0057] In the baking device provided by the embodiment of the present application, when it is necessary to open the switch valve of the battery cell, the driving mechanism 1 provides power, and the driving mechanism 1 drives the valve opening member 21 to move to the valve opening position, so that the valve opening member 21 can open the switch valve of the battery cell, complete the valve opening action, and solve the problem that it is difficult to open the switch valve in the baking chamber 100a. At least part of the driving mechanism 1 is arranged outside the baking container 100, which can not only prevent the driving mechanism 1 from occupying the limited space in the baking chamber 100a, but also prevent the environment in the baking chamber 100a from affecting the operation of the driving mechanism 1, thereby improving the operation efficiency of the equipment; the switch state of the switch valve can also be confirmed by detecting the movement state of the driving mechanism 1, and a special sensor can be set in the baking chamber 100a to detect the switch state of the switch valve, thereby reducing the manufacturing cost of the valve opening device.

[0058] In some embodiments, the switch valve may be a normally closed switch valve. A normally closed switch valve means that the switch valve remains closed when no external force is applied. In the battery production process, after the battery cell undergoes a baking process, a liquid injection process is performed, and the liquid injection process refers to injecting electrolyte into the internal cavity of the battery cell; during the baking process, the normally closed switch valve can be opened by a valve opening device of the baking equipment to facilitate vacuuming the internal cavity of the battery cell in the baking chamber 100a. After the vacuuming is completed, the switch valve can be closed before breaking the vacuum, so that the internal cavity of the battery cell remains in a vacuum state before entering the liquid injection process.

[0059] For some examples, see Figure 1 , the frame 2 is located in the baking chamber 100a. In this way, the sealing problem caused by the frame 2 being located outside the baking chamber 100a can be avoided.

[0060] In one embodiment, please refer to Figures 1 to 3 The frame 2 includes a pushing member 22 and a frame body 23, the valve opening member 21 is movably connected to the frame body 23, and the driving mechanism 1 is connected to the pushing member 22 to drive the pushing member 22 to make a linear motion along the front-to-back direction; the pushing member 22 makes a linear motion along the front-to-back direction to push the valve opening member 21 to move downward from the initial position to the valve opening position, wherein the front-to-back direction and the up-down direction are perpendicular to each other.

[0061] In this embodiment, the battery cell can be located below the valve opening member 21, the valve opening position is located below the initial position, and the push member 22 moves linearly along the front-to-back direction to push the valve opening member 21 downward from the initial position to the valve opening position. With such a design, on the one hand, the driving mechanism 1 does not need to bear the weight of the frame 23, thereby optimizing the force on the driving mechanism 1; on the other hand, the size of the frame 2 in the vertical direction can be reduced, so that the frame 2 can be flexibly placed in the limited space of the baking chamber 100a.

[0062] In one embodiment, please refer to Figure 2 and Figure 3, the push member 22 and the valve opening member 21 are separated from each other, and the push member 22 makes a linear motion in the front-to-back direction to contact the valve opening member 21 or separate from the valve opening member 21. For example, the push member 22 makes a linear motion forward to contact the valve opening member 21; the push member 22 makes a linear motion backward to separate from the valve opening member 21. In other words, the push member 22 and the valve opening member 21 can be separated and independent, and the force transmission between the two can be disconnected. When the push member 22 contacts the valve opening member 21, the force of the drive mechanism 1 can be transmitted to the valve opening member 21 through the push member 22 to push the valve opening member 21 to move downward to the valve opening position; when the push member 22 is separated from the valve opening member 21, the force of the drive mechanism 1 cannot be transmitted to the valve opening member 21 through the push member 22, and the force transmission between the push member 22 and the valve opening member 21 is disconnected.

[0063] In one embodiment, please refer to Figures 1 to 4 , the valve opening device includes an elastic member 3, the elastic member 3 connects the frame 23 and the valve opening member 21, and when the push member 22 and the valve opening member 21 are in a separated state, the elastic force of the elastic member 3 causes the valve opening member 21 to reset to the initial position. Exemplarily, the frame 23 always remains relatively still, the driving mechanism 1 drives the push member 22 to move forward in a straight line to push the valve opening member 21 to move downward from the initial position to the valve opening position, the distance between the frame 23 and the valve opening member 21 increases, and the elastic member 3 undergoes elastic deformation; the driving mechanism 1 drives the push member 22 to move backward in a straight line, the push member 22 is separated from the valve opening member 21, the valve opening member 21 is no longer subjected to the force of the push member 22, and the elastic member 3 restores the elastic deformation to generate an elastic force to reset the valve opening member 21 from the valve opening position to the initial position. In this way, during the resetting process of the valve opening member 21, the pushing member 22 is separated from the valve opening member 21, and the elastic force of the elastic member 3 does not need to drive the pushing member 22 to move. The elastic force of the elastic member 3 is used to drive the valve opening member 21 to reset to the initial position, which has high reliability.

[0064] The type of the elastic member 3 is not limited. For example, the type of the elastic member 3 includes but is not limited to a spring.

[0065] In one embodiment, please refer to Figures 1 to 3 The valve opening device includes a reversing assembly 4, through which the pusher 22 and the drive shaft 11 of the drive mechanism 1 are connected. The reversing assembly 4 converts the rotation of the drive shaft 11 into a linear motion of the pusher 22 along the front-rear direction. In this way, the rotation of the drive shaft 11 is converted into a linear motion of the pusher 22 along the front-rear direction by the reversing assembly 4, so as to achieve the purpose of pushing the valve opening member 21 to move downward.

[0066] The driving mechanism 1 includes a motor 12. The working state of the motor 12 is controlled by a controller to improve the automation level of the valve opening device.

[0067] The drive shaft 11 may be a motor shaft of the motor 12. The drive shaft 11 may also be connected to the motor shaft of the motor 12 to extend the shaft length. In some embodiments, the drive shaft 11 and the motor shaft may be connected via a coupling 5.

[0068] In one embodiment, please refer to Figures 1 to 3 The reversing assembly 4 includes a lead screw 41 and a nut 42, the lead screw 41 and the nut 42 are threadedly matched, the nut 42 is connected to the pusher 22, and the lead screw 41 is connected to the drive shaft 11. Specifically, the lead screw 41 is formed with an external thread extending along its axial direction, and the nut 42 is formed with an internal thread hole, and the lead screw 41 is penetrated into the internal thread hole and threadedly matched. The drive shaft 11 drives the lead screw 41 to rotate synchronously, and the nut 42 drives the pusher 22 to move linearly in the front-rear direction together.

[0069] The connection method between the lead screw 41 and the drive shaft 11 is not limited. For example, the lead screw 41 and the drive shaft 11 can be connected via a coupling 5 .

[0070] For some examples, see Figures 1 to 3 The valve opening device includes a magnetic fluid seal 6, the main body of the driving mechanism 1, such as a motor 12, is arranged outside the baking container 100, the driving shaft 11 is passed through the through hole of the baking container 100, the screw rod and the frame 2 are both located in the baking chamber 100a, the driving shaft 11 and the screw rod 41 are connected by a coupling 5, and the magnetic fluid seal 6 seals the gap between the driving shaft 11 and the through hole. The magnetic fluid seal 6 can not only transmit the rotation of the driving shaft 11 to the screw rod, so that the driving shaft 11 drives the screw rod to rotate synchronously, but also play a good sealing role.

[0071] In one embodiment, the lead screw 41 and the drive shaft 11 may be coaxial. In other words, the rotation axis of the lead screw 41 coincides with the rotation axis of the drive shaft 11 .

[0072] In one embodiment, please refer to Figures 2 to 4 The frame body 23 includes a fixed frame 231 and a connecting arm 232, and the two ends of the connecting arm 232 are respectively rotatably connected to the fixed frame 231 and the valve opening member 21. Exemplarily, the valve opening member 21 is pushed forward by the pusher 22, and the connecting arm 232 rotates around the hinge point hinged to the fixed frame 231, so that the valve opening member 21 can move downward.

[0073] The fixing frame 231 remains stationary, and illustratively, the fixing frame 231 may be connected to a clamp of a baking device or to the baking container 100. The clamp is used to clamp the battery cell.

[0074] The specific structure of the fixing frame 231 is not limited. For example, the fixing frame 231 includes a plurality of fixing rods, which can extend in the front-to-back direction and are arranged at intervals in the left-to-right direction. The fixing rods can be connected to the clamp. The fixing frame 231 is composed of a plurality of fixing rods. The fixing frame 231 has a simple structure, is easy to manufacture, and has a light weight.

[0075] It should be noted that the front-to-back direction, the left-to-right direction, and the up-down direction are perpendicular to each other and together constitute a three-dimensional vertical coordinate system.

[0076] In one embodiment, please refer to Figures 2 to 4 The valve opening member 21 includes a connecting rod 211 and a pressing plate 212 for contacting the switch valve, and a plurality of connecting rods 211 are arranged at intervals in the left-right direction to form a first unit 2110. The pressing plate 212 extends in the left-right direction and is connected to the lower part of the connecting rod 211 of the first unit 2110, wherein the left-right direction is perpendicular to the up-down direction. The pressing plate 212 extends in the left-right direction so that the pressing plate 212 contacts the switch valves of a plurality of battery cells, so that one pressing plate 212 can synchronously open the switch valves of a plurality of battery cells. The plurality of connecting rods 211 arranged at intervals in the left-right direction of the first unit 2110 are connected to the pressing plate 212, which can strengthen the connection strength of each part of the pressing plate 212 in the left-right direction, and can drive the pressing plate 212 to move smoothly through the plurality of connecting rods 211 of the first unit 2110.

[0077] For some examples, see Figure 5 The pressing plate 212 is formed with a protrusion 2121, and the protrusion 2121 is used to contact and open the switch valve. For example, each pressing plate 212 is formed with a plurality of protrusions 2121 arranged at intervals in the left-right direction, and each protrusion 2121 corresponds to a switch valve.

[0078] The material of the pressing plate 212 is not limited. For example, the pressing plate 212 can be a flexible member. The pressing plate 212 can be slightly deformed under the force of the switch valve. In this way, the pressing plate 212 can not only push open the switch valve, but also avoid scratching the switch valve by slightly deforming. For example, the pressing plate 212 can be made of an elastic high temperature resistant material, such as silicone and / or rubber.

[0079] In one embodiment, please refer to Figure 3 and Figure 4 , multiple pressing plates 212 are arranged at intervals along the front-to-back direction to form a second unit 2120, and each first unit 2110 corresponds to a second unit 2120 to form a valve opening layer. In other words, multiple connecting rods 211 of each first unit 2110 are connected to multiple pressing plates 212 of a second unit 2120. In this way, multiple connecting rods 211 of a first unit 2110 can drive multiple pressing plates 212 of a second unit 2120 to move, and a valve opening layer can synchronously open the switch valves of more battery cells to improve efficiency.

[0080] In one embodiment, the multiple valve opening layers are arranged in layers and intervals in the vertical direction. For example, a layer of battery cells can be placed under each valve opening layer, and the multiple valve opening layers can correspond to the multiple battery cells arranged in layers in the vertical direction. In this way, each valve opening layer corresponds to multiple battery cells located in the same layer, and the multiple valve opening layers correspond to multiple battery cells, so that the switch valves of more battery cells can be opened at one time, further improving efficiency.

[0081] In one embodiment, please refer to Figures 1 to 3 The push member 22 includes a main push plate 221 and a plurality of push rods 222 extending in the front-rear direction, the nut 42 is connected to the main push plate 221, the push rods 222 correspond to the connecting rods 211 one by one, the rear end of the push rods 222 is connected to the main push plate 221, and the front end of the push rods 222 is used to push the connecting rods 211. In this way, the push member 22 has a simple structure and a light weight.

[0082] It should be noted that, in the embodiments of the present application, a plurality includes a number of two or more.

[0083] In one embodiment, please refer to Figures 1 to 4 , the total number of push rods 222 is 6, the total number of connecting rods 211 is 6, and the total number of pressure plates 212 is 12, wherein each first unit 2110 includes 2 connecting rods 211, and each second unit 2120 includes 4 pressure plates 212; the number of first units 2110 and the number of second units 2120 are both 3, which together constitute 3 valve opening layers. Each push rod 222 is used to push a connecting rod 211 downward. In this way, 3 layers of battery cells can be opened.

[0084] In one embodiment, please refer to Figures 1 to 3 , the valve opening device includes a mounting seat 7, a support member 8, a bearing seat and two bearings. The support member 8 and the mounting seat 7 are respectively located at the axial ends of the drive shaft 11, the bearing seat is connected to the support member 8, and the two bearings are respectively arranged on the mounting seat 7 and the bearing seat. The motor 12 is fixed on the mounting seat 7, the drive shaft 11 is passed through the bearing of the mounting seat 7, the rear end of the drive shaft 11 is connected to the motor 12 shaft through the coupling 5, the front end of the drive shaft 11 is connected to the rear end of the screw through the coupling 5, and the front end of the screw 41 is connected to the bearing of the support member 8. The support member 8 provides support force for the front end of the screw 41, reduces the jitter during operation, and makes the pusher 22 run more smoothly.

[0085] The type of bearing is not limited. By way of example, the bearing includes but is not limited to a deep groove ball bearing.

[0086] The embodiment of the present application also provides a production line for producing batteries, wherein the production line includes the baking device in any embodiment of the present application.

[0087] 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 baking device, characterized in that: include: A baking container, comprising a baking cavity for accommodating the battery cell; The valve opening device comprises a driving mechanism and a frame, wherein at least a part of the driving mechanism is located outside the baking container, the frame comprises a valve opening member, and the valve opening member is located in the baking cavity, the driving mechanism can drive the valve opening member to move from an initial position to a valve opening position, and when the valve opening member is in the valve opening position, the valve opening member opens the switch valve of the battery cell.

2. The baking device according to claim 1, characterized in that: The frame includes a pushing member and a frame body, the valve opening member is movably connected to the frame body, and the driving mechanism is connected to the pushing member to drive the pushing member to perform linear motion along the front-to-back direction; the pushing member performs linear motion along the front-to-back direction to push the valve opening member to move downward from the initial position to the valve opening position, wherein the front-to-back direction and the up-down direction are perpendicular to each other.

3. The baking device according to claim 2, characterized in that: The pushing member and the valve opening member are separated from each other, and the pushing member moves linearly along the front-rear direction to contact the valve opening member or separate from the valve opening member.

4. The baking device according to claim 3, characterized in that: The valve opening device includes an elastic member, which connects the frame and the valve opening member. When the pushing member and the valve opening member are separated, the elastic force of the elastic member causes the valve opening member to return to an initial position.

5. The baking device according to claim 2, characterized in that: The valve opening device includes a reversing assembly, the pushing member and the driving shaft of the driving mechanism are connected through the reversing assembly, and the reversing assembly converts the rotation of the driving shaft into a linear motion of the pushing member along the front-rear direction.

6. The baking device according to claim 5, characterized in that: The reversing assembly includes a lead screw and a nut, the lead screw and the nut are threadedly matched, the nut is connected to the pushing member, and the lead screw is connected to the driving shaft.

7. The baking device according to claim 2, characterized in that: The frame body comprises a fixing frame and a connecting arm, and two ends of the connecting arm are rotatably connected to the fixing frame and the valve opening member respectively.

8. The baking device according to claim 1, characterized in that: The valve opening member includes a connecting rod and a pressure plate for contacting the switch valve, wherein a plurality of the connecting rods are arranged at intervals along the left-right direction to form a first unit, and the pressure plate extends along the left-right direction and is connected below the connecting rod of the first unit, wherein the left-right direction is perpendicular to the up-down direction.

9. The baking device according to claim 8, characterized in that: The plurality of pressing plates are arranged at intervals along the front-to-back direction to form a second unit, and each of the first units corresponds to one of the second units to form a valve opening layer.

10. The baking device according to claim 9, characterized in that: The multiple valve opening layers are arranged in layers and at intervals along the up and down directions.

11. The baking device according to any one of claims 1 to 10, characterized in that: The rack is located in the baking cavity.

12. A production line for producing batteries, characterized in that: The invention comprises the baking equipment according to any one of claims 1 to 11.

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