Pier pressure welding mechanism and battery production equipment

Abstract

The utility model provides an upsetting welding mechanism and battery production equipment, the upsetting welding mechanism is provided with a welding position and a standby position, the upsetting welding mechanism comprises: a base; the welding pressure head is arranged on the machine base and can move between a welding position and a standby position in the first direction, one side of the welding pressure head is provided with an adsorption surface, the adsorption surface is used for adsorbing the current collecting disc and pressing the current collecting disc on the end part of the battery cell, the adsorption surface is provided with a through hole, and the through hole penetrates through the welding pressure head in the first direction; and the welding head is arranged on the other side of the welding pressure head, and is used for welding the collector plate at the end part of the battery cell. According to the upsetting welding mechanism, the welding pressure head and the welding head are integrated in one mechanism, so that the upsetting operation and the welding operation are realized in the same mechanism, the space utilization rate is favorably improved, and the size of equipment for producing batteries is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, and more specifically, to a stamping and welding mechanism and a battery production equipment. Background Art

[0002] In the related art, the production process of a battery includes two important steps: stamping and welding. Among them, the purpose of stamping is to ensure that all battery cells reach a unified height standard through the stamping process, and the purpose of welding is to weld a current collector plate at the end of the battery cell to lead out the polarity of the battery cell. In the prior art, stamping and welding need to be completed by a stamping mechanism and a welding mechanism at different workstations respectively, and the battery cells are conveyed between the two processes through a conveyor line. The overall equipment has a large volume and low space utilization rate. Summary of the Utility Model

[0003] The utility model provides a new technical solution for a stamping and welding mechanism, which can at least solve the problem of low space utilization rate in the prior art.

[0004] The utility model also provides a battery production equipment, including the above stamping and welding mechanism.

[0005] According to the first aspect of the utility model, a stamping and welding mechanism is provided. The stamping and welding mechanism has a welding position and a standby position. The stamping and welding mechanism includes: a machine base; a welding press head, which is arranged on the machine base, and the welding press head is movable between the welding position and the standby position along a first direction. An adsorption surface is arranged on one side of the welding press head, and the adsorption surface is used for adsorbing the current collector plate and stamping the current collector plate at the end of the battery cell. Through holes are arranged on the adsorption surface, and the through holes penetrate through the welding press head along the first direction; a welding head, which is arranged on the other side of the welding press head, and the welding head is used for welding the current collector plate at the end of the battery cell.

[0006] Optionally, a groove is arranged on the side of the welding press head away from the welding head. The inner wall surface of the groove includes a groove wall surface and a groove bottom surface, and the groove bottom surface forms the adsorption surface.

[0007] Optionally, at least one adsorption hole is arranged on the adsorption surface, an adsorption channel is arranged in the welding press head, one end of the adsorption channel is communicated with the adsorption hole, and the other end of the adsorption channel is used for connecting a vacuum adsorption mechanism.

[0008] Optionally, the number of the adsorption holes is multiple, and the multiple adsorption holes are arranged at intervals along the circumferential direction on the groove bottom surface.

[0009] Optionally, at least one air blowing port is arranged on the groove wall surface, an air blowing channel is arranged in the welding press head, one end of the air blowing channel is communicated with the air blowing port, and the other end of the air blowing channel is used for connecting an air source.

[0010] Optionally, the number of the air blowing ports is plural, and the plural air blowing ports are circumferentially and spacedly formed in the groove wall surface.

[0011] Optionally, a plurality of bosses are provided on the bottom surface of the groove, the plurality of bosses are circumferentially and spacedly arranged, and each boss is spaced from the groove wall surface. A notch is formed between two adjacent bosses, the notch communicates with the air blowing port, and a through hole is provided between two adjacent bosses.

[0012] Optionally, the number of the through holes is plural, and the plural through holes are symmetrically distributed about the center.

[0013] Optionally, a positioning pin is provided at one end of the welding head away from the welding tip.

[0014] Optionally, the upset welding mechanism further includes: a first driving member provided on the machine base; a mounting plate connected to the first driving member, and the first driving member is configured to drive the mounting plate to move along the first direction; a welding seat provided on the mounting plate, the welding seat is provided between the welding head and the welding tip, one side of the welding head facing the welding tip is connected to the welding seat, and the welding seat has a hollow area penetrating along the first direction, and the hollow area communicates with the through hole.

[0015] Optionally, a connecting portion is provided on the mounting plate, the connecting portion is located on a side of the welding seat away from the welding head, and an elastic member is connected between the connecting portion and the welding seat.

[0016] Optionally, a pressure sensor is connected between the elastic member and the welding seat.

[0017] Optionally, a guiding member extending along the first direction is provided on the mounting plate, a guiding and cooperating member is provided on the welding seat, and the guiding member cooperates with the guiding and cooperating member to guide the welding seat to move along the first direction.

[0018] Optionally, a first dust removing port is provided on the welding head, the first dust removing port communicates with the through hole, in a second direction, one end of the welding seat is provided with a second dust removing port, the second direction intersects with the first direction, the welding seat and the welding head cooperate to define a dust removing channel, the dust removing channel communicates the first dust removing port and the second dust removing port, and the upset welding mechanism further includes: a dust removing assembly provided at the welding position, the dust removing assembly is movably provided on the machine base along the second direction, and when the welding head is at the welding position, the dust removing assembly communicates with the dust removing port to adsorb foreign matters generated during welding.

[0019] Optionally, there are multiple welding heads, and the multiple welding heads are arranged at intervals along the second direction. The pier welding mechanism also 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.

[0020] Optionally, the welding head is a laser welding head.

[0021] According to a second aspect of the present invention, a battery production device is provided, comprising the jacking welding mechanism described in any one of the above embodiments.

[0022] According to the pier pressing welding mechanism of the utility model, the welding pressure head and the welding head are integrated into one mechanism, and the collecting plate can be pressed onto the end of the battery cell by utilizing the movement of the welding pressure head along the first direction, and then the through hole on the welding pressure head is utilized to enable the welding head to be arranged on the side of the welding pressure head away from the battery cell and realize welding through the through hole, so that the pier pressing and welding operations are realized in the same mechanism, which is beneficial to improve space utilization and reduce the volume of equipment used to produce batteries.

[0023] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 This is a top view of a press welding mechanism, a jig, and a limiting mechanism in a battery production device according to an embodiment of the present invention;

[0026] Figure 2 This is a front view of a partial structure, a jig, and a limiting mechanism of a jacking welding mechanism in a battery production device according to an embodiment of the present utility model;

[0027] Figure 3 This is a three-dimensional diagram of a pier pressing assembly in a pier pressing welding mechanism according to an embodiment of the present utility model;

[0028] Figure 4 This is a three-dimensional diagram of a welding head and a welding seat in a pier-pressing welding mechanism according to an embodiment of the present invention;

[0029] Figure 5 This is a side view of a welding head and a welding seat in a pier-pressing welding mechanism according to an embodiment of the present invention;

[0030] Figure 6 It is along Figure 5Cross-sectional view along line A-A;

[0031] Figure 7 is the front view of the welding pressure head and the welding seat in the pier pressing welding mechanism according to an embodiment provided by the present utility model;

[0032] Figure 8 is along Figure 7 Cross-sectional view along line B-B in;

[0033] Figure 9 is the perspective view of the welding pressure head in the pier pressing welding mechanism according to an embodiment provided by the present utility model;

[0034] Figure 10 is Figure 9 Enlarged view of the circled part at A in;

[0035] Figure 11 is the front view of the welding pressure head in the pier pressing welding mechanism according to an embodiment provided by the present utility model;

[0036] Figure 12 is along Figure 11 Cross-sectional view along line C-C in;

[0037] Figure 13 is along Figure 11 Cross-sectional view along line D-D in;

[0038] Figure 14 is the schematic diagram of the jig in the battery production equipment according to an embodiment provided by the present utility model.

[0039] Reference numerals

[0040] 100, Pier pressing welding mechanism; 101, Welding position; 102, Standby position;

[0041] 10, Machine base;

[0042] 20, Welding pressure head; 21, Adsorption surface; 211, Boss; 22, Through hole; 23, Groove; 24, Groove wall surface; 25, Positioning pin; 26, Adsorption hole; 27, Adsorption channel; 271, Adsorption joint; 28, Blowing port; 29, Blowing channel; 291, Nitrogen gas joint;

[0043] 30, First driving member;

[0044] 40, Mounting plate; 41, Guide member; 42, Connecting portion;

[0045] 50, Welding seat; 51, Hollow area; 52, Guide fitting; 53, First dust removal port; 54, Second dust removal port; 55, Dust removal channel;

[0046] 60, Elastic member;

[0047] 70. Pressure sensor;

[0048] 80. Dust removal component;

[0049] 90. Welding component; 91. Welding head;

[0050] 200. Battery cell; 300. Current collector plate; 400. Fixture; 401. Positioning hole; 500. Limiting mechanism. Detailed implementation mode

[0051] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention.

[0052] The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present invention, its application, or its use.

[0053] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0054] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0055] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0056] First, the pier pressing and welding mechanism 100 according to the embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

[0057] As Figures 1 to 13 shown, the pier pressing and welding mechanism 100 according to the embodiments of the present invention includes: a machine base 10, a welding press head 20, and a welding head 91.

[0058] Specifically, the pier pressing and welding mechanism 100 has a welding position 101 and a standby position 102. The welding press head 20 is provided on the machine base 10, and the welding press head 20 is movable between the welding position 101 and the standby position 102 along a first direction. An adsorption surface 21 is provided on one side of the welding press head 20. The adsorption surface 21 is used to adsorb the current collector plate 300 and pier press the current collector plate 300 against the end of the battery cell 200. Through holes 22 are provided in the adsorption surface 21, and the through holes 22 penetrate the welding press head 20 along the first direction. The welding head 91 is provided on the other side of the welding press head 20, and the welding head 91 is used to weld the current collector plate 300 to the end of the battery cell 200.

[0059] In other words, the pierce welding mechanism 100 according to the embodiment of the present utility model mainly consists of a machine base 10, a welding head 20, and a welding tip 91. The pierce welding mechanism 100 is used to pierce and press the current collector plate 300 onto the end of the battery cell 200 and weld the current collector plate 300 to the battery cell 200. The battery cell 200 may include, but is not limited to, a cylindrical battery cell 200.

[0060] The pierce welding machine includes at least two stations, namely a welding station 101 and a standby station 102. The machine base 10 can span across the welding station 101 and the standby station 102. The welding head 20 is connected to the machine base 10 and can move along a first direction. Therefore, the welding head 20 can move back and forth between the welding station 101 and the standby station 102.

[0061] It should be noted that the first direction can be a direction approaching or departing from the end of the battery cell 200, so that the welding head 20 can approach or depart from the battery cell 200 when moving 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.

[0062] In the first direction, one end of the welding head 20 can be provided with an adsorption surface 21, and the other end of the welding head 20 can face the welding tip 91 and be spaced apart from the welding tip 91. The adsorption surface 21 can adsorb the current collector plate 300. A through hole 22 is provided on the welding head 20. The through hole 22 can penetrate the welding head 20 along the first direction, so that the welding tip 91 can pass through the through hole 22 to weld the current collector plate 300.

[0063] The working process of the pierce welding mechanism 100 in this embodiment will be described in detail below.

[0064] In the initial state, the welding head 20 can be at the standby station 102. An external handling mechanism can load the current collector plate 300 onto the welding head 20, and the adsorption surface 21 on the welding head 20 adsorbs the current collector plate 300. The jig 400 fixed with the battery cell 200 can be located at one end of the welding head 20 away from the welding tip 91, and be spaced apart from the welding head 20 in the first direction, and the end of the battery cell 200 can face the adsorption surface 21. Then the welding head 20 moves along the first direction to the welding station 101. At this time, the welding head 20 presses the current collector plate 300 against the end of the battery cell 200 and pierces and presses the current collector plate 300 and the battery cell 200. When the welding head 20 pierces and presses the current collector plate 300 to a preset position, the welding tip 91 can pass through the through hole 22 to weld the current collector plate 300, thus realizing two operations of piercing and welding in a single mechanism.

[0065] Thus, for the pierce welding mechanism 100 according to the embodiments of the present utility model, the welding head 20 and the welding tip 91 are integrated into one mechanism. By the movement of the welding head 20 along the first direction, the current collector plate 300 can be pierced and pressed at the end of the battery cell 200. Then, through the through hole 22 on the welding head 20, the welding tip 91 can be arranged on the side of the welding head 20 away from the battery cell 200 and welding can be achieved through the through hole 22. Thus, the two operations of piercing and pressing and welding are realized within the same mechanism, which is beneficial to improving the space utilization rate and reducing the volume of the equipment for producing batteries.

[0066] In some alternative embodiments, the welding head 20 can be made of copper or copper-containing alloy, such as tin bronze or electrolytic copper, which is beneficial to improving the heat dissipation efficiency and pressure-bearing capacity of the welding head 20, and thus improving the service life of the welding head 20.

[0067] According to an embodiment of the present utility model, a groove 23 is provided on the side of the welding head 20 away from the welding tip 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 forms an adsorption surface 21.

[0068] Specifically, a groove 23 can be provided on the side of the welding head 20 facing the battery cell 200. The inner wall surface of the groove 23 can be mainly composed of a groove wall surface 24 and a groove bottom surface. Among them, the groove bottom surface can face the battery cell 200 and be substantially parallel to the end surface of the battery cell 200, and the groove wall surface 24 can be arranged around the groove bottom surface.

[0069] The groove bottom surface can form an adsorption surface 21. When the adsorption surface 21 adsorbs the current collector plate 300, the current collector plate 300 can be embedded in the groove 23. The groove 23 can be used to position the current collector plate 300 to prevent the current collector plate 300 from shifting or shaking, which is beneficial to improving the reliability and accuracy of welding.

[0070] 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 plate 300, and the circular current collector plate 300 can be welded to the cylindrical battery cell 200.

[0071] According to some other embodiments of the present utility model, at least one adsorption hole 26 is provided on the adsorption surface 21, and an adsorption channel 27 is provided in the welding head 20. One end of the adsorption channel 27 is communicated with the adsorption hole 26, and the other end of the adsorption channel 27 is used to connect a vacuum adsorption mechanism.

[0072] Specifically, one or more adsorption holes 26 may be provided on the bottom surface of the groove 23. The adsorption holes 26 and the vacuum adsorption mechanism may be connected through an adsorption channel 27, and the adsorption channel 27 is provided in the welding head 20. Thus, by using an external vacuum pumping mechanism, a negative pressure can be generated at the adsorption holes 26. Therefore, after the external handling mechanism feeds the material, the adsorption holes 26 can generate a force on the current collector plate 300 towards the welding head 91, sucking the current collector plate 300 tightly onto the welding head 20, which is beneficial to improving stability and reliability.

[0073] In some specific embodiments of the present invention, the number of the adsorption holes 26 is multiple, and the multiple adsorption holes 26 are circumferentially spaced and opened on the bottom surface of the groove. That is to say, the multiple adsorption holes 26 can be arranged at intervals in a ring shape, whereby the adsorption force received by the current collector plate 3 is more uniform, which is beneficial to improving the stability of the current collector plate 300.

[0074] As Figure 12 shown, the adsorption surface 21 is circular, and the three adsorption holes 26 are circumferentially spaced and are centrosymmetrically distributed relative to the center of the adsorption surface 21. Each adsorption hole 26 can be connected to an adsorption channel 27. Three vacuum connectors may be provided on the surface of one end of the welding head 20 adjacent to the end surface where the groove 23 is located. Each adsorption channel 27 can be connected to the vacuum pumping mechanism through a vacuum connector. Two of the three vacuum connectors can be arranged at intervals at the top end of the welding head 20, and the other vacuum connector can be arranged at the right end of the welding head 20.

[0075] According to some alternative embodiments of the present invention, at least one air blowing port 28 is provided on the groove wall surface 24, and an air blowing channel 29 is provided in 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 a gas source.

[0076] Specifically, one or more air blowing ports 28 may be provided on the groove wall surface 24. The air blowing ports 28 can be connected to the gas source through the air blowing channel 29, and the air blowing channel 29 can be provided in the welding head 20. The gas source can provide a protective gas. Thus, through the air blowing ports 28, a protective gas can be blown out to the welding area between the current collector plate 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.

[0077] Optionally, the air blowing ports 28 can be arranged close to the bottom surface of the groove, which is beneficial to improving the anti-oxidation effect.

[0078] According to some other embodiments of the present invention, the number of the air blowing ports 28 is multiple, and the multiple air blowing ports 28 are circumferentially spaced and opened on the groove wall surface 24. For example, the multiple air blowing ports 28 can be arranged at intervals in a circle and are centrosymmetrically distributed relative to the center of the circular adsorption surface 21.

[0079] In this embodiment, a plurality of air blowing ports 28 are arranged circumferentially, which can improve the coverage of the anti-oxidation gas, make the anti-oxidation gas on the welding surface diffuse more uniformly, and is beneficial to improving the anti-oxidation effect.

[0080] In some specific embodiments of the present utility model, a plurality of bosses 211 are provided on the bottom surface of the groove, the plurality of bosses 211 are arranged at intervals circumferentially, and each boss 211 is spaced apart from the groove wall surface 24, and a notch is formed between two adjacent bosses 211, and the notch communicates with the air blowing port 28, and a through hole 22 is provided between two adjacent bosses 211.

[0081] For example, a plurality of bosses 211 can be provided on the circular adsorption surface 21, each boss 211 can be in an arc shape, the plurality of bosses 211 can be arranged at intervals along the circumference, and are centrosymmetrically distributed with respect to the center of the circular adsorption surface 21. A through hole 22 is provided between any two adjacent bosses 211, and in the radial direction of the adsorption surface 21, the air blowing port 28 can be provided at one end of the through hole 22.

[0082] Such as Figure 9 and Figure 10 As shown, three bosses 211 are provided on the adsorption surface 21, the through hole 22 can be an oval hole, and each through hole 22 can extend in the radial direction of the circular adsorption surface 21, that is to say, three through holes 22 can be provided on the welding head 20, and each through hole 22 can correspond to an air blowing port 28.

[0083] In this embodiment, bosses 211 facing the notch are provided on the bottom surface of the groove 23, that is, the adsorption surface 21, so that when the current collecting plate 300 is adsorbed, it is abutted by the bosses 211, avoiding direct contact between the surface of the current collecting plate 300 and the adsorption surface 21. Thus, a negative pressure can be generated in the whole groove 23 by using the adsorption holes 26, which is beneficial to making the force on the current collecting plate 300 more uniform, and at the same time can prevent damage to the surface of the current collecting plate 300.

[0084] According to some alternative embodiments of the present utility model, the number of the through holes 22 is multiple, and the multiple through holes 22 are centrosymmetrically distributed. Specifically, the multiple through holes 22 can be centrosymmetrically distributed around the center point of the circular adsorption surface 21, so that the multiple through holes 22 can correspond to the protrusions on the current collecting plate 300 one by one, facilitating the welding head 91 to pass through the through holes 22 to weld the current collecting plate 300.

[0085] According to some other embodiments of the present utility model, a positioning pin 25 is provided at one end of the welding head 20 away from the welding head 91.

[0086] Specifically, one or more positioning pins 25 may be provided at one end of the welding head 20 facing the fixture 400. Positioning holes 401 may be provided on the fixture 400. The positioning pins 25 may 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 upsetting and welding processes, which is beneficial to improving the welding quality.

[0087] Optionally, two positioning pins 25 may be provided on the welding head 20. The two positioning pins 25 may be spaced apart. The groove 23 may be located between the two positioning pins 25. Each positioning pin 25 may extend along the first direction. Corresponding two positioning holes 401 may be provided on the fixture 400. The battery cell 200 may be located between the two positioning holes 401. Each positioning hole 401 may extend along the first direction.

[0088] In some specific embodiments of the present utility model, the upsetting 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 provided on the machine base 10. The mounting plate 40 is connected to the first driving member 30. The first driving member 30 is used to drive the mounting plate 40 to move along the first direction. The welding seat 50 is provided on the mounting plate 40. The welding seat 50 is provided between the welding head 20 and the welding tip 91. One side of the welding head 20 facing the welding tip 91 is connected to the welding seat 50. The welding seat 50 has a hollow area 51 penetrating along the first direction, and the hollow area 51 is communicated with the through hole 22.

[0089] Specifically, the first driving member 30 may be fixed on the machine base 10. 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 along the first direction. Optionally, the first driving member 30 may be an electric cylinder.

[0090] The mounting plate 40 may be connected with the welding seat 50. The welding seat 50 may be generally bent. The welding seat 50 may be located between the welding head 20 and the welding tip 91. One end of the welding seat 50 away from the welding tip 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 together along the first direction closer to or away from the battery cell 200.

[0091] In addition, the welding seat 50 may be provided with a hollow area 51. The hollow area 51 may penetrate the welding seat 50 along the first direction, and the hollow area 51 is communicated with the through hole 22. Therefore, there is no obstruction between the welding tip 91 and the battery cell 200. The welding tip 91 can pass through the hollow area 51 and the through hole 22 to perform welding on the current collector plate 300.

[0092] Optionally, the connection between the welding seat 50 and the welding head 20 is detachable to facilitate inspection and maintenance.

[0093] According to some alternative embodiments of the present utility model, a connecting portion 42 is provided on the mounting plate 40. The connecting portion 42 is located on the side of the welding base 50 away from the welding head 20, and an elastic member 60 is connected between the connecting portion 42 and the welding base 50.

[0094] Specifically, the first driving member 30 may be located at the bottom side of the mounting plate 40. The connecting portion 42 may be provided at one end of the mounting plate 40 close to the welding head 91 and on the top surface of the mounting plate 40. The connecting portion 42 and the welding base 50 may be connected through the elastic member 60, and such connection may include but is not limited to direct connection and indirect connection.

[0095] The elastic member 60 according to this embodiment is provided between the welding base 50 and the connecting portion 42 of the mounting plate 40, and can play a buffering role to avoid damage to the current collector plate 300 or the battery cell 200 due to excessive instantaneous force on the current collector plate 300 during the process of the welding head 20 pressing the current collector plate 300 against the end of the battery cell 200.

[0096] Optionally, the elastic member 60 may be a spring.

[0097] Preferably, the number of the elastic members 60 may be multiple, and the multiple elastic members 60 may be arranged in a direction perpendicular to the first direction, which is beneficial to improving the buffering effect and making the acting force of the elastic members 60 on the welding head 20 more uniform.

[0098] According to some other embodiments of the present utility model, as Figure 3 shown, a pressure sensor 70 is connected between the elastic member 60 and the welding base 50. The pressure sensor 70 can be used to monitor the pressing pressure to ensure that the heights of the battery cells 200 after pressing are consistent. By moving the welding head 20 to a preset value through the first driving member 30, the welding head 20 can perform pressing with a preset pressure.

[0099] In some specific embodiments of the present utility model, a guiding member 41 extending in the first direction is provided on the mounting plate 40, and a guiding and cooperating member 52 is provided on the welding base 50. The guiding member 41 and the guiding and cooperating member 52 cooperate to guide the welding base 50 to move in the first direction, which is beneficial to improving the smoothness and reliability of the movement of the welding head 20.

[0100] Optionally, the guiding member 41 may include but is not limited to a guide rail, a guide rod, and a guide post, and the guiding and cooperating member 52 may include but is not limited to a slider and a sleeve.

[0101] According to some alternative embodiments of the present utility model, a first dust removal port 53 is provided on the welding head 20. The first dust removal port 53 is communicated with the through hole 22. In the second direction, one end of the welding base 50 is provided with a second dust removal port 54. The second direction intersects with the first direction. The welding base 50 cooperates with the welding head 20 to define a dust removal channel 55. The dust removal channel 55 communicates the first dust removal port 53 and the second dust removal port 54. The pierce welding mechanism 100 further includes a dust removal component 80. The dust removal component 80 is arranged at the welding position 101. The dust removal component 80 is movably arranged on the machine base 10 along the second direction. When the welding head 20 is at the welding position 101, the dust removal component 80 is communicated with the dust removal port to adsorb foreign matters generated during welding.

[0102] Specifically, as Figure 6 and Figure 8 shown, the welding head 20 and the welding base 50 are connected to form an integral body. A first dust removal port 53 communicated with the through hole 22 can be provided on the welding head 20 for receiving welding chips and dust generated during welding. One end of the welding base 50 in the second direction can be provided with a second dust removal port 54. The first dust removal port 53 and the second dust removal port 54 are communicated through the dust removal channel 55. The dust removal channel 55 can guide the welding chips and dust to the second dust removal port 54.

[0103] As Figure 3 shown, the dust removal component 80 can be fixedly connected to the machine base 10 and located at the welding position 101, and the dust removal component 80 is spaced apart from the welding base 50 in the second direction. The dust removal component 80 can include a dust removal pipe. When the welding head 20 is at the welding position 101, the second dust removal port 54 can be communicated with one end of the dust removal pipe, and the other end of the dust removal pipe can be connected to an external vacuum suction accessory, so as to perform dust removal during welding and avoid damage to the battery cell 200 and the current collector plate 300 caused by the residue of welding chips or dust.

[0104] In addition, the dust removal component 80 can be connected to a driving structure, and the driving structure includes but is not limited to an electric cylinder. The driving structure drives the dust removal component 80 to approach or move away from the second dust removal port 54 on the welding base 50 along the second direction.

[0105] 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 communicated with the second dust removal port 54 through the driving structure, realizing dust removal during welding, which is beneficial to simplifying the structures of the welding head 20 and the welding base 50 and saving the layout space.

[0106] Optionally, the first direction and the second direction can be mutually perpendicular horizontal directions.

[0107] According to some other embodiments of the present utility model, the number of the welding heads 91 is multiple, and the multiple welding heads 91 are arranged at intervals along the second direction. The pierce welding mechanism 100 further includes a second driving member, which is connected to the welding heads 91 and is used to drive the welding heads 91 to move along the second direction.

[0108] Specifically, the above-mentioned welding press head 20, the first driving member 30, the mounting plate 40, the welding seat 50, the elastic member 60, the pressure sensor 70 and the dust removal assembly 80 can be combined to form a pierce assembly. The welding heads 91 and the second driving member can be combined to form a welding assembly 90.

[0109] The pierce welding mechanism 100 can include multiple pierce assemblies, and the multiple pierce assemblies are arranged along the second direction. The fixture 400 can be conveyed along the second direction on the conveyor line. That is to say, the pierce welding mechanism 100 can be arranged on one side of the conveyor line along the conveying direction of the conveyor line.

[0110] The welding assembly 90 can be located on the side of the pierce assembly away from the conveyor line, and the second driving member can drive the welding heads 91 to move along the second direction. That is to say, one welding head 91 can correspond to multiple pierce assemblies, which is beneficial to reducing the number of welding heads 91 on the one hand, saving equipment costs, and on the other hand, is also beneficial to improving production efficiency.

[0111] Preferably, the pierce welding mechanism 100 can include two rows of pierce assemblies, and the two rows of pierce assemblies can be arranged on both sides of the conveyor line. Each row of pierce assemblies includes multiple pierce assemblies arranged along the conveyor line. Thus, the current collectors 300 can be welded to both ends of the battery cell 200 simultaneously during one stop of the fixture 400, which is beneficial to further improving production efficiency.

[0112] According to some other embodiments of the present utility model, 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.

[0113] The embodiment of the present utility model also provides a battery production device, which includes the pierce welding mechanism 100 according to any one of the above embodiments.

[0114] As Figure 14 shown, the battery cell 200 is clamped by the fixture 400, and both ends of the battery cell 200 are exposed from the surface of the fixture 400. The fixture 400 can be conveyed on the conveyor line and can stop at the welding position 101. A limiting mechanism can be provided at the bottom of the fixture 400 to limit the fixture 400 and prevent the fixture 400 from shaking or shifting.

[0115] Since the pierce welding mechanism 100 according to the embodiment of the present utility model has the above technical effects, the battery production equipment according to the embodiment of the present utility model also has corresponding technical effects, that is, the welding pressure head 20 and the welding head 91 are integrated in one mechanism. By the movement of the welding pressure head 20 in the first direction, the current collector plate 300 can be pierced and pressed at the end of the battery cell 200, and then the welding head 91 can be arranged on the side of the welding pressure head 20 away from the battery cell 200 through the through hole 22 on the welding pressure head 20 to achieve welding through the through hole 22, so that the two operations of piercing and welding are realized in the same mechanism, which is beneficial to improving the space utilization rate and reducing the volume of the equipment for producing batteries.

[0116] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. A pier pressing and welding mechanism, characterized in that, The pier pressing and welding mechanism has a welding position and a standby position, and the pier pressing and welding mechanism includes: A machine base; A welding press head, which is arranged on the machine base, and the welding press head is movable between the welding position and the standby position along a first direction. An adsorption surface is provided on one side of the welding press head. The adsorption surface is used for adsorbing the current collector plate and pressing the current collector plate against the end of the battery cell. The adsorption surface is provided with through holes, and the through holes penetrate through the welding press head along the first direction; A welding head, which is arranged on the other side of the welding press head, and the welding head is used for welding the current collector plate to the end of the battery cell.

2. The pier pressing and welding mechanism according to claim 1, characterized in that, A groove is provided on the side of the welding press head away from the welding head. The inner wall surface of the groove includes a groove wall surface and a groove bottom surface, and the groove bottom surface forms the adsorption surface.

3. The pier pressing and welding mechanism according to claim 2, wherein At least one adsorption hole is provided on the adsorption surface. An adsorption channel is provided in the welding press head. One end of the adsorption channel is communicated with the adsorption hole, and the other end of the adsorption channel is used for connecting a vacuum adsorption mechanism.

4. The pier pressing and welding mechanism according to claim 3, characterized in that, The number of the adsorption holes is multiple, and the multiple adsorption holes are arranged at intervals in the circumferential direction on the groove bottom surface.

5. The pier pressing and welding mechanism according to claim 2, wherein, At least one air blowing port is provided on the groove wall surface. An air blowing channel is provided in the welding press head. One end of the air blowing channel is communicated with the air blowing port, and the other end of the air blowing channel is used for connecting an air source.

6. The pier pressing and welding mechanism according to claim 5, characterized in that, The number of the air blowing ports is multiple, and the multiple air blowing ports are arranged at intervals in the circumferential direction on the groove wall surface.

7. The pier pressing and welding mechanism according to claim 5, wherein A plurality of bosses are provided on the groove bottom surface. The plurality of bosses are arranged at intervals in the circumferential direction, and each boss is spaced apart from the groove wall surface. A notch is formed between two adjacent bosses, and the notch is communicated with the air blowing port. A through hole is provided between two adjacent bosses.

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

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

10. The pier pressing and welding mechanism according to any one of claims 1-9, characterized in that, It further includes: A first driving member, which is arranged on the machine base; A mounting plate, which is connected to the first driving member. The first driving member is used for driving the mounting plate to move along the first direction; A welding seat, which is arranged on the mounting plate. The welding seat is arranged between the welding press head and the welding head. The side of the welding press head facing the welding head is connected to the welding seat. The welding seat has a hollow area penetrating along the first direction, and the hollow area is communicated with the through hole.

11. The pier pressing and welding mechanism according to claim 10, wherein, A connecting portion is provided on the mounting plate. The connecting portion is located on the side of the welding seat away from the welding press head. An elastic member is connected between the connecting portion and the welding seat.

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

13. The pier pressing and welding mechanism according to claim 10, characterized in that, A guiding member extending along the first direction is provided on the mounting plate. A guiding and cooperating member is provided on the welding seat. The guiding member and the guiding and cooperating member cooperate to guide the welding seat to move along the first direction.

14. The pier pressing and welding mechanism according to claim 10, wherein The welding pressure head is provided with a first dust removal port, and the first dust removal port is communicated with the through hole. In the 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 pressure head to define a dust removal channel, and the dust removal channel communicates the first dust removal port and the second dust removal port. The upset welding mechanism further includes: a dust removal component, which is arranged at the welding position, and the dust removal component is movably arranged on the machine base along the second direction. When the welding pressure head is at the welding position, the dust removal component is communicated with the dust removal port to adsorb foreign matters generated by welding.

15. The pier pressing and welding mechanism according to claim 14, characterized in that, The number of the welding heads is multiple, and the multiple welding heads are arranged at intervals along the second direction. The upset welding mechanism further includes: a second driving member, which is connected to the welding head and is used for driving the welding head to move along the second direction.

16. The pier 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 production device, characterized in that, including: the upset welding mechanism according to any one of claims 1-16.

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