Upset-pressing and welding mechanism and battery production device

Abstract

An upset-pressing and welding mechanism (100) and a battery production device. The upset-pressing and welding mechanism (100) is provided with a welding station (101) and a standby station (102). The upset-pressing and welding mechanism (100) comprises: a base (10); a welding press head (20), wherein the welding press head (20) is arranged on the base (10), the welding press head (20) is capable of moving between the welding station (101) and the standby station (102) in a first direction, a suctioning surface (21) is arranged on one side of the welding press head (20), the suctioning surface (21) is used for suctioning a current collecting disc (300) and upset-pressing the current collecting disc (300) against an end portion of a battery cell (200), the suctioning surface (21) is provided with a through hole (22), and the through hole (22) passes through the welding press head (20) in the first direction; and a welding head (91), wherein the welding head (91) is arranged on the other side of the welding press head (20), and the welding head (91) is used for welding the current collecting disc (300) to the end portion of the battery cell (200).

Description

Press welding mechanism and battery production equipment

[0001] This patent application claims priority to Chinese Patent Application No. 202421635346.4, filed on July 10, 2024, entitled "Pressing Welding Mechanism and Battery Production Equipment", which is incorporated herein by reference in its entirety. Technical Field

[0002] This application relates to the field of battery production equipment technology, and more specifically, to a pressing and welding mechanism and battery production equipment. Background Technology

[0003] In related technologies, the battery production process includes two important steps: pressing and welding. The purpose of pressing is to ensure that all cells meet a uniform height standard, while the purpose of welding is to weld current collectors to the ends of the cells to indicate their polarity. In existing technologies, pressing and welding need to be completed at different stations by pressing and welding mechanisms, respectively. The cells are transported between the two processes via a conveyor line, resulting in large overall equipment size and low space utilization. Summary of the Invention

[0004] This application provides a new technical solution for a pressing and welding mechanism, which can at least solve the problem of low space utilization in the prior art.

[0005] This application also provides a battery production equipment, including the above-mentioned pressing and welding mechanism.

[0006] According to a first aspect of this application, a pressing and welding mechanism is provided, the pressing and welding mechanism having a welding position and a standby position, the pressing and welding mechanism comprising: a base; a welding head disposed on the base and movable between the welding position and the standby position along a first direction, one side of the welding head having an adsorption surface for adsorbing a current collector and pressing the current collector onto the end of the battery cell, the adsorption surface having a through hole penetrating the welding head along the first direction; and a welding head disposed on the other side of the welding head for welding the current collector to the end of the battery cell.

[0007] Optionally, the welding head has a groove on the side away from the welding head, and the inner wall of the groove includes a groove wall surface and a groove bottom surface, with the groove bottom surface forming the adsorption surface.

[0008] Optionally, the adsorption surface is provided with at least one adsorption hole, the welding head is provided with an adsorption channel, one end of the adsorption channel is connected to the adsorption hole, and the other end of the adsorption channel is used to connect to a vacuum adsorption mechanism.

[0009] Optionally, the number of adsorption holes is multiple, and the multiple adsorption holes are spaced apart circumferentially on the bottom surface of the tank.

[0010] Optionally, at least one air inlet is provided on the wall of the tank, and an air blowing channel is provided inside the welding head. One end of the air blowing channel is connected to the air inlet, and the other end of the air blowing channel is used to connect to an air source.

[0011] Optionally, there are multiple air inlets, which are spaced apart circumferentially on the groove wall.

[0012] Optionally, the bottom surface of the groove is provided with a plurality of protrusions, the plurality of protrusions are arranged circumferentially spaced apart, and each protrusion is spaced apart from the groove wall surface, a notch is formed between two adjacent protrusions, the notch communicates with the air blowing port, and a through hole is provided between two adjacent protrusions.

[0013] Optionally, the number of through holes is multiple, and the multiple through holes are centrally symmetrically distributed.

[0014] Optionally, a locating pin is provided at the end of the welding head away from the welding head.

[0015] Optionally, the pressing and welding mechanism further includes: a first driving member disposed on the base; a mounting plate connected to the first driving member, the first driving member being used to drive the mounting plate to move along the first direction; and a welding seat disposed on the mounting plate, the welding seat being disposed between the welding pressure head and the welding head, the side of the welding pressure head facing the welding head being connected to the welding seat, the welding seat having a hollow area extending along the first direction, the hollow area communicating with the through hole.

[0016] Optionally, the mounting plate is provided with a connecting part, which is located on the side of the welding seat away from the welding pressure head, and an elastic element is connected between the connecting part and the welding seat.

[0017] Optionally, a pressure sensor is connected between the elastic element and the welding seat.

[0018] Optionally, the mounting plate is provided with a guide extending along the first direction, and the welding seat is provided with a guide mating member. The guide and the guide mating member cooperate to guide the welding seat to move along the first direction.

[0019] Optionally, the welding pressure head is provided with a first dust removal port, which communicates with the through hole. In the second direction, one end of the welding seat is provided with a second dust removal port, which intersects with the first direction. The welding seat cooperates with the welding pressure head and defines a dust removal channel. The dust removal channel communicates with the first dust removal port and the second dust removal port. The pressing welding mechanism further includes a dust removal component, which is disposed at the welding position. The dust removal component is movably disposed on the machine base along the second direction. When the welding pressure head is in the welding position, the dust removal component communicates with the dust removal port to adsorb foreign matter generated during welding.

[0020] Optionally, the number of welding heads is multiple, and the multiple welding heads are arranged at intervals along the second direction. The pressing welding mechanism further includes a second driving member, which is connected to the welding head and is used to drive the welding head to move along the second direction.

[0021] Optionally, the welding head is a laser welding head.

[0022] According to a second aspect of this application, a battery production apparatus is provided, including the pressing and welding mechanism described in any of the above embodiments.

[0023] According to the pressing and welding mechanism of this application, the welding head and the welding head are integrated into one mechanism. The current collector can be pressed onto the end of the battery cell by the movement of the welding head in the first direction. Then, the welding head can be arranged on the side of the welding head away from the battery cell by the through hole of the welding head and welding is achieved through the through hole. Thus, the pressing and welding operations can be performed in the same mechanism, which is beneficial to improve space utilization and reduce the volume of equipment used for battery production.

[0024] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0026] Figure 1 is a top view of the pressing and welding mechanism, jig, and limiting mechanism in a battery production equipment according to an embodiment of this application;

[0027] Figure 2 is a front view of a portion of the structure, fixture, and limiting mechanism of the pressing and welding mechanism in a battery production equipment according to an embodiment of this application;

[0028] Figure 3 is a perspective view of the pressing assembly in a pressing welding mechanism according to an embodiment of this application;

[0029] Figure 4 is a perspective view of the welding head and welding seat in a pressing welding mechanism according to an embodiment of this application;

[0030] Figure 5 is a side view of the welding head and welding seat in a pressing welding mechanism according to an embodiment of this application;

[0031] Figure 6 is a cross-sectional view along line AA in Figure 5;

[0032] Figure 7 is a front view of the welding head and welding seat in a pressing welding mechanism according to an embodiment of this application;

[0033] Figure 8 is a cross-sectional view along line BB in Figure 7;

[0034] Figure 9 is a perspective view of the welding head in a pressing welding mechanism according to an embodiment of this application;

[0035] Figure 10 is an enlarged view of the circled area at point A in Figure 9;

[0036] Figure 11 is a front view of the welding head in a pressing welding mechanism according to an embodiment of this application;

[0037] Figure 12 is a cross-sectional view along line CC in Figure 11;

[0038] Figure 13 is a cross-sectional view along line DD in Figure 11;

[0039] Figure 14 is a schematic diagram of a fixture in a battery production apparatus according to an embodiment of this application.

[0040] Reference numerals in the attached diagram: 100, pressing and welding mechanism; 101, welding position; 102, standby position; 10, base; 20, welding pressure head; 21, adsorption surface; 211, boss; 22, through hole; 23, groove; 24, groove wall; 25, positioning pin; 26, adsorption hole; 27, adsorption channel; 271, adsorption connector; 28, air blowing port; 29, air blowing channel; 291, nitrogen gas connector; 30, first driving component; 40, mounting plate; 41, guide component; 42, connecting part; 50, welding seat; 51, hollow area; 52, guide fitting component; 53, first dust removal port; 54, second dust removal port; 55, dust removal channel; 60, elastic component; 70, pressure sensor; 80, dust removal assembly; 90, welding assembly; 91, welding head; 200, battery cell; 300, current collector; 400, fixture; 401, positioning hole; 500, limit mechanism. Detailed Implementation

[0041] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0042] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0043] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0044] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0046] The pressing and welding mechanism 100 according to an embodiment of this application will now be described in detail with reference to the accompanying drawings.

[0047] As shown in Figures 1 to 13, the pressing and welding mechanism 100 according to an embodiment of this application includes: a base 10, a welding pressure head 20, and a welding head 91.

[0048] Specifically, the pressing and welding mechanism 100 has a welding position 101 and a standby position 102. A welding head 20 is mounted on the base 10 and is movable between the welding position 101 and the standby position 102 along a first direction. One side of the welding head 20 has an adsorption surface 21 for adsorbing the current collector 300 and pressing it onto the end of the battery cell 200. The adsorption surface 21 has a through hole 22 that penetrates the welding head 20 along the first direction. A welding head 91 is located on the other side of the welding head 20 and is used to weld the current collector 300 to the end of the battery cell 200.

[0049] In other words, the pressing and welding mechanism 100 according to the embodiments of this application mainly consists of a base 10, a welding head 20, and a welding head 91. The pressing and welding mechanism 100 is used to press the current collector 300 onto the end of the battery cell 200 and to weld the current collector 300 to the battery cell 200. The battery cell 200 may include, but is not limited to, a cylindrical battery cell 200.

[0050] The press welding machine includes at least two workstations: a welding station 101 and a standby station 102. The machine base 10 can span the welding station 101 and the standby station 102. A welding pressure head 20 that is movable in a first direction is connected to the machine base 10. Therefore, the welding pressure head 20 can move back and forth between the welding station 101 and the standby station 102.

[0051] It should be noted that the first direction can be a direction close to or far from the end of the battery cell 200, so that the welding head 20 can move close to or far from the battery cell 200 when it moves along the first direction. For example, the first direction can be the axial direction of the battery cell 200. When the battery cell 200 is conveyed on the conveyor line, the axis of the battery cell 200 can extend along the width direction of the conveyor line, and the first direction can be perpendicular to the conveying direction of the conveyor line.

[0052] In the first direction, one end of the welding head 20 may be provided with an adsorption surface 21, and the other end of the welding head 20 may face the welding head 91 and be spaced apart from the welding head 91. The adsorption surface 21 can adsorb the collector plate 300. The welding head 20 is provided with a through hole 22, which can penetrate the welding head 20 in the first direction, so that the welding head 91 can pass through the through hole 22 to weld the collector plate 300.

[0053] The working process of the pressing and welding mechanism 100 in this embodiment will be described in detail below.

[0054] In the initial state, the welding head 20 can be in standby position 102. An external conveying mechanism can load the collector plate 300 onto the welding head 20, and the adsorption surface 21 on the welding head 20 adsorbs the collector plate 300. The fixture 400 with the battery cell 200 fixed can be located at the end of the welding head 20 away from the welding head 91, and spaced apart from the welding head 20 in the first direction, with the end of the battery cell 200 facing the adsorption surface 21. Then the welding head 20 moves along the first direction to the welding position 101. At this time, the welding head 20 presses the collector plate 300 against the end of the battery cell 200 and performs pressing on the collector plate 300 and the battery cell 200. After the welding head 20 presses the collector plate 300 to the preset position, the welding head 91 can pass through the through hole 22 to weld the collector plate 300, thereby realizing both pressing and welding operations in a single mechanism.

[0055] Therefore, according to the pressing and welding mechanism 100 of this application embodiment, the welding head 20 and the welding head 91 are integrated into one mechanism. The current collector 300 can be pressed onto the end of the cell 200 by the movement of the welding head 20 in the first direction. Then, the welding head 91 can be arranged on the side of the welding head 20 away from the cell 200 by the through hole 22 and welding can be achieved through the through hole 22. Thus, the pressing and welding operations can be performed in the same mechanism, which is beneficial to improve space utilization and reduce the volume of equipment used for battery production.

[0056] In some alternative embodiments, the welding pressure head 20 can be made of copper or copper alloys, such as tin bronze or copper, which is beneficial to improving the heat dissipation efficiency and pressure bearing capacity of the welding pressure head 20, thereby increasing the service life of the welding pressure head 20.

[0057] According to one embodiment of this application, a groove 23 is provided on the side of the welding head 20 away from the welding head 91. The inner wall surface of the groove 23 includes a groove wall surface 24 and a groove bottom surface, and the groove bottom surface is formed as an adsorption surface 21.

[0058] Specifically, the welding head 20 may have a groove 23 on the side facing the battery cell 200. The inner wall of the groove 23 may be mainly composed of the groove wall 24 and the groove bottom. The groove bottom may face the battery cell 200 and be roughly parallel to the end face of the battery cell 200. The groove wall 24 may be arranged around the groove bottom.

[0059] The bottom surface of the tank can be formed as an adsorption surface 21. When the adsorption surface 21 adsorbs the collector plate 300, the collector plate 300 can be embedded in the groove 23. The groove 23 can be used to position the collector plate 300, preventing the collector plate 300 from shifting or shaking, which is beneficial to improving the reliability and accuracy of welding.

[0060] Optionally, the groove 23 can be a circular groove, and the adsorption surface 21 can be a circular surface. Therefore, the welding head 20 can adsorb the circular current collector 300, and the circular current collector 300 can be welded to the cylindrical battery cell 200.

[0061] According to some other embodiments of this application, at least one adsorption hole 26 is provided on the adsorption surface 21, and an adsorption channel 27 is provided inside the welding head 20. One end of the adsorption channel 27 is connected to the adsorption hole 26, and the other end of the adsorption channel 27 is used to connect to the vacuum adsorption mechanism.

[0062] Specifically, the bottom surface of the groove 23 may be provided with one or more adsorption holes 26. The adsorption holes 26 are connected to the vacuum adsorption mechanism through an adsorption channel 27, which is located inside the welding pressure head 20. Thus, by using an external vacuum mechanism, a negative pressure can be generated at the adsorption holes 26. After the material is loaded by the external conveying mechanism, the adsorption holes 26 can generate a force on the collector plate 300 toward the welding head 91, thus adhering the collector plate 300 tightly to the welding pressure head 20, which helps to improve stability and reliability.

[0063] In some specific embodiments of this application, there are multiple adsorption holes 26, which are spaced apart circumferentially on the bottom surface of the tank. That is, the multiple adsorption holes 26 can be arranged in a ring-shaped interval, which makes the adsorption force on the collecting plate 300 more uniform and helps to improve the stability of the collecting plate 300.

[0064] As shown in Figure 12, the adsorption surface 21 is circular, and three adsorption holes 26 are spaced apart along the circumference and are centrally symmetrically distributed with respect to the center of the adsorption surface 21. Each adsorption hole 26 can communicate with an adsorption channel 27. Three vacuum connectors can be provided on the end surface of the welding head 20 adjacent to the end face where the groove 23 is located. Each adsorption channel 27 can be connected to a vacuum pumping mechanism through one vacuum connector. Two of the three vacuum connectors can be arranged at the top of the welding head 20 at intervals, and the other vacuum connector can be arranged at the right end of the welding head 20.

[0065] According to some optional embodiments of this application, at least one air blowing port 28 is provided on the groove wall surface 24, and an air blowing channel 29 is provided inside the welding head 20. One end of the air blowing channel 29 is connected to the air blowing port 28, and the other end of the air blowing channel 29 is used to connect to an air source.

[0066] Specifically, one or more air inlets 28 may be provided on the tank wall surface 24. The air inlets 28 can be connected to an air source through an air blowing channel 29, which can be located inside the welding head 20. The air source can provide protective gas. Thus, protective gas can be blown out through the air inlets 28 to the welding area between the manifold 300 and the battery cell 200 to form a protective layer, thereby protecting the metal from the influence of the external environment and effectively preventing oxidation and corrosion. The protective gas may include, but is not limited to, nitrogen.

[0067] Optionally, the air inlet 28 can be positioned close to the bottom of the tank, which helps to improve the anti-oxidation effect.

[0068] According to other embodiments of this application, there are multiple air inlets 28, which are circumferentially spaced on the groove wall 24. For example, the multiple air inlets 28 may be arranged circumferentially and are centrally symmetrical with respect to the center of the circular adsorption surface 21.

[0069] In this embodiment, multiple air inlets 28 are arranged circumferentially to increase the coverage of the anti-oxidation gas, making the anti-oxidation gas diffuse more evenly on the welding surface, which is beneficial to improving the anti-oxidation effect.

[0070] In some specific embodiments of this application, the bottom surface of the tank is provided with a plurality of protrusions 211, the plurality of protrusions 211 are arranged circumferentially spaced apart, and each protrusion 211 is spaced apart from the tank wall surface 24. A gap is formed between two adjacent protrusions 211, the gap is connected to the air blowing port 28, and a through hole 22 is provided between two adjacent protrusions 211.

[0071] For example, a plurality of protrusions 211 may be provided on the circular adsorption surface 21. Each protrusion 211 may be arc-shaped, and the plurality of protrusions 211 may be arranged at intervals along the circumference and are centrally symmetrically distributed with respect to the center of the circular adsorption surface 21. A through hole 22 is provided between any two adjacent protrusions 211, and an air blowing port 28 may be provided at one end of the through hole 22 in the radial direction of the adsorption surface 21.

[0072] As shown in Figures 9 and 10, the adsorption surface 21 is provided with three protrusions 211, and the through hole 22 can be a waist-shaped hole. Each through hole 22 can extend radially in the circular adsorption surface 21. That is to say, the welding pressure head 20 can be provided with three through holes 22, and each through hole 22 can correspond to an air blowing port 28.

[0073] In this embodiment, a boss 211 facing the groove opening is provided on the bottom surface of the groove 23, i.e. the adsorption surface 21. This allows the collector plate 300 to be abutted by the boss 211 when it is adsorbed, thus avoiding direct contact between the surface of the collector plate 300 and the adsorption surface 21. As a result, the adsorption hole 26 can be used to generate negative pressure throughout the groove 23, which is beneficial for the collector plate 300 to be subjected to more uniform force and can also prevent damage to the surface of the collector plate 300.

[0074] According to some optional embodiments of this application, there are multiple through holes 22, which are centrally symmetrically distributed. Specifically, the multiple through holes 22 can be centrally symmetrically distributed along the center point of the circular adsorption surface 21, so that the multiple through holes 22 can correspond one-to-one with the protrusions on the collector plate 300, which facilitates the welding head 91 to pass through the through holes 22 to weld the collector plate 300.

[0075] According to some other embodiments of this application, a positioning pin 25 is provided at the end of the welding head 20 away from the welding head 91.

[0076] Specifically, the end of the welding head 20 facing the fixture 400 may be provided with one or more positioning pins 25, and the fixture 400 may be provided with positioning holes 401. The positioning pins 25 can be inserted into the positioning holes 401 so that the relative position between the welding head 20 and the fixture 400 is fixed, avoiding relative displacement between the two during the pressing and welding process, which is beneficial to improving the welding quality.

[0077] Optionally, the welding head 20 may be provided with two positioning pins 25, which may be spaced apart. The groove 23 may be located between the two positioning pins 25. Each positioning pin 25 may extend along a first direction. The fixture 400 may be provided with two corresponding positioning holes 401. The battery cell 200 may be located between the two positioning holes 401, and each positioning hole 401 may extend along a first direction.

[0078] In some specific embodiments of this application, the pressing and welding mechanism 100 further includes a first driving member 30, a mounting plate 40, and a welding seat 50. The first driving member 30 is disposed on the base 10. The mounting plate 40 is connected to the first driving member 30, and the first driving member 30 is used to drive the mounting plate 40 to move along a first direction. The welding seat 50 is disposed on the mounting plate 40 and is located between the welding pressure head 20 and the welding head 91. The side of the welding pressure head 20 facing the welding head 91 is connected to the welding seat 50. The welding seat 50 has a hollow area 51 that extends along the first direction and communicates with the through hole 22.

[0079] Specifically, a first driving member 30 may be fixed on the base 10, and the movable end of the first driving member 30 may be connected to the mounting plate 40 to drive the mounting plate 40 to move in a first direction. Optionally, the first driving member 30 may be an electric cylinder.

[0080] A welding seat 50 can be connected to the mounting plate 40. The welding seat 50 can be approximately bent. The welding seat 50 can be located between the welding head 20 and the welding head 91, and the end of the welding seat 50 away from the welding head 91 is connected to the welding head 20. Therefore, when the first driving member 30 drives the mounting plate 40, the welding head 20 and the welding seat 50 can move closer to or further away from the cell 200 together in the first direction.

[0081] In addition, the welding seat 50 may be provided with a hollow area 51, which can penetrate the welding seat 50 along the first direction and is connected to the through hole 22. Therefore, there is no obstruction between the welding head 91 and the battery cell 200, and the welding head 91 can pass through the hollow area 51 and the through hole 22 to perform welding on the current collector 300.

[0082] Optionally, the welding seat 50 and the welding head 20 are detachably connected for easy inspection and maintenance.

[0083] According to some optional embodiments of this application, the mounting plate 40 is provided with a connecting part 42, which is located on the side of the welding seat 50 away from the welding pressure head 20, and an elastic member 60 is connected between the connecting part 42 and the welding seat 50.

[0084] Specifically, the first driving member 30 can be located on the bottom side of the mounting plate 40, and the connecting part 42 can be located on the top surface of the mounting plate 40 near the welding head 91. The connecting part 42 and the welding seat 50 can be connected by an elastic member 60, and this connection can include, but is not limited to, direct connection and indirect connection.

[0085] According to this embodiment, the elastic element 60 is disposed between the connection portion 42 of the welding seat 50 and the mounting plate 40, which can play a buffering role and prevent the current collector 300 from being subjected to excessive instantaneous force during the process of the welding head 20 pressing the current collector 300 onto the end of the cell 200, thus avoiding damage to the current collector 300 or the cell 200.

[0086] Optionally, the elastic element 60 can be a spring.

[0087] Preferably, there can be multiple elastic elements 60, and the multiple elastic elements 60 can be arranged in a direction perpendicular to the first direction, which is beneficial to improve the buffering effect and make the force exerted by the elastic elements 60 on the welding head 20 more uniform.

[0088] According to other embodiments of this application, as shown in FIG3, a pressure sensor 70 is connected between the elastic member 60 and the welding seat 50. The pressure sensor 70 can monitor the pressing pressure to ensure that the height of the battery cells 200 is consistent after pressing. The welding head 20 is moved to a preset value by the first driving member 30, so that the welding head 20 can press with a preset pressure.

[0089] In some specific embodiments of this application, the mounting plate 40 is provided with a guide member 41 extending in a first direction, and the welding seat 50 is provided with a guide mating member 52. The guide member 41 and the guide mating member 52 cooperate to guide the welding seat 50 to move in the first direction, which is beneficial to improving the smoothness and reliability of the movement of the welding pressure head 20.

[0090] Optionally, the guide component 41 may include, but is not limited to, a guide rail, a guide rod, or a guide post, and the guide mating component 52 may include, but is not limited to, a slider or a sleeve.

[0091] According to some optional embodiments of this application, the welding head 20 is provided with a first dust removal port 53, which communicates with the through hole 22. In the second direction, one end of the welding seat 50 is provided with a second dust removal port 54. The second direction intersects with the first direction. The welding seat 50 cooperates with the welding head 20 and defines a dust removal channel 55. The dust removal channel 55 communicates with the first dust removal port 53 and the second dust removal port 54. The pressing welding mechanism 100 also includes a dust removal component 80, which is disposed at the welding position 101. The dust removal component 80 is movably disposed on the base 10 along the second direction. When the welding head 20 is in the welding position 101, the dust removal component 80 communicates with the dust removal port to adsorb foreign matter generated during welding.

[0092] Specifically, as shown in Figures 6 and 8, the welding head 20 and the welding seat 50 are connected to form an integral whole. The welding head 20 may be provided with a first dust removal port 53 that communicates with the through hole 22 for receiving welding slag and dust generated during welding. The welding seat 50 may be provided with a second dust removal port 54 at one end in the second direction. The first dust removal port 53 and the second dust removal port 54 are connected by a dust removal channel 55, which can guide the welding slag and dust to the second dust removal port 54.

[0093] As shown in Figure 3, the dust removal assembly 80 can be fixedly connected to the base 10 and located at the welding position 101, and the dust removal assembly 80 and the welding seat 50 are spaced apart in the second direction. The dust removal assembly 80 may include a dust removal tube. When the welding head 20 is in the welding position 101, the second dust removal port 54 can be connected to one end of the dust removal tube, and the other end of the dust removal tube can be connected to an external vacuum adsorption component, thereby removing dust during the welding process and preventing welding chips or dust residue from damaging the battery cell 200 and the current collector 300.

[0094] Additionally, the dust removal assembly 80 can be connected to a drive structure, which includes, but is not limited to, an electric cylinder. The drive structure drives the dust removal assembly 80 to move closer to or further away from the second dust removal port 54 on the welding seat 50 along a second direction.

[0095] In this embodiment, the dust removal component 80 is fixed at the welding position 101. After the welding head 20 moves to the welding position 101, the dust removal component 80 is connected to the second dust removal port 54 through the driving structure, which realizes dust removal during the welding process. This helps to simplify the structure of the welding head 20 and the welding seat 50 and saves layout space.

[0096] Optionally, the first direction and the second direction can be mutually perpendicular horizontal directions.

[0097] According to other embodiments of this application, there are multiple welding heads 91, which are spaced apart along the second direction. The pressing welding mechanism 100 also includes a second driving member connected to the welding head 91 for driving the welding head 91 to move along the second direction.

[0098] Specifically, the aforementioned welding head 20, first drive member 30, mounting plate 40, welding seat 50, elastic member 60, pressure sensor 70, and dust removal assembly 80 can be combined to form a pressing assembly. The welding head 91 and the second drive member can be combined to form a welding assembly 90.

[0099] The pressing and welding mechanism 100 may include multiple pressing components, which are arranged along a second direction. The fixture 400 can be conveyed along the second direction on the conveyor line. In other words, the pressing and welding mechanism 100 can be arranged on one side of the conveyor line along the conveying direction of the conveyor line.

[0100] The welding assembly 90 can be located on the side of the pressing assembly away from the conveyor line. The second drive can drive the welding head 91 to move in the second direction. That is, one welding head 91 can correspond to multiple pressing assemblies. On the one hand, this helps to reduce the number of welding heads 91 and save equipment costs. On the other hand, it also helps to improve production efficiency.

[0101] Preferably, the pressing and welding mechanism 100 may include two rows of pressing components, which may be arranged on both sides of the conveyor line. Each row of pressing components includes multiple pressing components arranged along the conveyor line. This allows the current collectors 300 to be welded to both ends of the battery cell 200 simultaneously during one stop of the fixture 400, which is beneficial to further improve production efficiency.

[0102] According to some other embodiments of this application, the welding head 91 is a laser welding head, and the laser of the laser welding head can pass through the hollow area 51 and the through hole 22 to realize the welding of the current collector 300 and the battery cell 200.

[0103] This application also provides a battery production equipment, which includes a pressing and welding mechanism 100 according to any of the above embodiments.

[0104] As shown in Figure 14, the battery cell 200 is clamped by the fixture 400, with both ends of the battery cell 200 protruding from the surface of the fixture 400. The fixture 400 can be conveyed on a conveyor line and can stop at the welding position 101. The bottom of the fixture 400 may be provided with a limiting mechanism to limit the fixture 400 and prevent it from shaking or shifting.

[0105] Since the pressing and welding mechanism 100 according to the embodiments of this application has the above-mentioned technical effects, the battery production equipment according to the embodiments of this application also has the corresponding technical effects. That is, the welding head 20 and the welding head 91 are integrated into one mechanism. The current collector 300 can be pressed onto the end of the cell 200 by the movement of the welding head 20 in the first direction. Then, the welding head 91 can be arranged on the side of the welding head 20 away from the cell 200 by the through hole 22 and welding can be achieved through the through hole 22. Thus, the pressing and welding operations are realized in the same mechanism, which is beneficial to improve space utilization and reduce the volume of the equipment used to produce batteries.

[0106] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A pressing and welding mechanism, characterized in that, The pressing and welding mechanism has a welding position and a standby position, and the pressing and welding mechanism includes: Base; A welding head is provided on the base and is movable between the welding position and the standby position along a first direction. One side of the welding head is provided with an adsorption surface for adsorbing the current collector and pressing the current collector onto the end of the battery cell. The adsorption surface is provided with a through hole that penetrates the welding head along the first direction. A welding head is located on the other side of the welding head and is used to weld the current collector to the end of the battery cell.

2. The pressing and welding mechanism according to claim 1, characterized in that, The welding head has a groove on the side away from the welding head, and the inner wall of the groove includes a groove wall surface and a groove bottom surface, with the groove bottom surface forming the adsorption surface.

3. The pressing and welding mechanism according to claim 2, characterized in that, The adsorption surface is provided with at least one adsorption hole, and the welding head is provided with an adsorption channel. One end of the adsorption channel is connected to the adsorption hole, and the other end of the adsorption channel is used to connect to a vacuum adsorption mechanism.

4. The pressing and welding mechanism according to claim 3, characterized in that, The number of adsorption holes is multiple, and the multiple adsorption holes are spaced apart circumferentially on the bottom surface of the tank.

5. The pressing and welding mechanism according to claim 2, characterized in that, At least one air inlet is provided on the wall of the tank, and an air inlet is provided inside the welding head. One end of the air inlet is connected to the air inlet, and the other end of the air inlet is used to connect to an air source.

6. The pressing and welding mechanism according to claim 5, characterized in that, The number of air inlets is multiple, and the multiple air inlets are spaced apart circumferentially on the groove wall.

7. The pressing and welding mechanism according to claim 5, characterized in that, The bottom surface of the groove is provided with a plurality of protrusions, which are arranged circumferentially and spaced apart. Each protrusion is spaced apart from the groove wall. A notch is formed between two adjacent protrusions, and the notch communicates with the air inlet. A through hole is provided between two adjacent protrusions.

8. The pressing and welding mechanism according to claim 1, characterized in that, The number of through holes is multiple, and the multiple through holes are centrally symmetrically distributed.

9. The pressing and welding mechanism according to claim 1, characterized in that, The welding head is provided with a positioning pin at the end away from the welding head.

10. The pressing and welding mechanism according to any one of claims 1-9, characterized in that, Also includes: A first driving member is disposed on the base; Mounting plate, the mounting plate is connected to the first driving member, the first driving member is used to drive the mounting plate to move along the first direction; A welding seat is disposed on the mounting plate and between the welding pressure head and the welding head. The side of the welding pressure head facing the welding head is connected to the welding seat. The welding seat has a hollow area that extends through a first direction and communicates with the through hole.

11. The pressing and welding mechanism according to claim 10, characterized in that, The mounting plate is provided with a connecting part, which is located on the side of the welding seat away from the welding head, and an elastic element is connected between the connecting part and the welding seat.

12. The pressing and welding mechanism according to claim 11, characterized in that, A pressure sensor is connected between the elastic element and the welding seat.

13. The pressing and welding mechanism according to claim 10, characterized in that, The mounting plate is provided with a guide extending along the first direction, and the welding seat is provided with a guide fitting. The guide and the guide fitting cooperate to guide the welding seat to move along the first direction.

14. The pressing and welding mechanism according to claim 10, characterized in that, The welding press head is provided with a first dust removal port, which communicates with the through hole. In a second direction, one end of the welding seat is provided with a second dust removal port. The second direction intersects with the first direction. The welding seat cooperates with the welding press head and defines a dust removal channel, which connects the first dust removal port and the second dust removal port. The pressing welding mechanism further includes: A dust removal component is provided at the welding position and is movably disposed on the machine base along the second direction. When the welding pressure head is at the welding position, the dust removal component communicates with the second dust removal port to adsorb foreign matter generated during welding.

15. The pressing and welding mechanism according to claim 14, characterized in that, The welding heads are multiple, and the multiple welding heads are arranged at intervals along the second direction. The pressing welding mechanism further includes: The second driving component is connected to the welding head and is used to drive the welding head to move along the second direction.

16. The pressing and welding mechanism according to any one of claims 1-9, characterized in that, The welding head is a laser welding head.

17. A battery manufacturing apparatus, characterized in that, include: The pressing and welding mechanism according to any one of claims 1-16.

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