Collector plate welding pressure head

Abstract

The utility model relates to the technical field of battery cell welding, and provides a collector plate welding pressure head, which comprises a welding pressure head main body, the welding pressure head main body comprises a gas flowing part and an adsorption part, the gas flowing part is provided with a first through hole and a second through hole, the first through hole is used for extracting gas, and the second through hole is used for injecting welding protective gas; the adsorption part is arranged in the gas flowing part and connected with the gas flowing part, a first flow channel and a second flow channel are arranged in the adsorption part, the first flow channel and the second flow channel are bent flow channels, the first flow channel and the second flow channel are arranged in a non-crossed mode, the first flow channel is communicated with the first through hole, and the second flow channel is communicated with the second through hole. According to the collector plate welding pressure head, the first flow channel and the second flow channel are arranged to be the bent flow channels and are not crossed, and when the collector plate is welded, vacuumizing and blowing are carried out in the branch flow channels and do not interfere with each other, so that the welding effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric core welding, in particular to a current collecting plate welding pressure head. Background Art

[0002] During the battery production process, the current collector plate needs to be placed on both ends of the battery cell and pressed tightly for welding. The battery cell and the current collector plate are transported to the welding station for welding. After the current collector plate is loaded, the welding head uses negative pressure to adsorb the current collector plate and adsorbs the current collector plate to the welding station. During welding, nitrogen is sprayed out of the welding head as a protective gas during welding. This requires the welding head to have two air channels, and the two air channels often interfere with each other, thereby reducing the welding effect. Utility Model Content

[0003] The utility model provides a current collecting plate welding pressure head, which is used to solve the defect of interference between the vacuum air duct and the air blowing air duct of the welding pressure head in the prior art.

[0004] The utility model provides a collecting plate welding pressure head, including a welding pressure head body, the welding pressure head body including: a gas flow portion, the gas flow portion is provided with a first through hole and a second through hole, the first through hole is used to extract gas, and the second through hole is used to inject welding shielding gas; an adsorption portion, which is arranged in the gas flow portion and connected to the gas flow portion, and the adsorption portion is provided with a first flow channel and a second flow channel, the first flow channel and the second flow channel are bent flow channels, and the first flow channel and the second flow channel are not cross-arranged, the first flow channel is connected to the first through hole, and the second flow channel is connected to the second through hole.

[0005] According to a current collecting plate welding head provided by the utility model, the adsorption part includes a plurality of adsorbents, and the plurality of adsorbents are connected to the gas flow part, each of the adsorbents is provided with the first flow channel and the second flow channel, and each of the adsorbents is correspondingly provided with a first through hole and a second through hole.

[0006] According to a current collecting plate welding head provided by the utility model, the first ends of the plurality of adsorbents are connected to each other, the second ends of the plurality of adsorbents are connected to the gas flow portion, and the angles between two adjacent adsorbents are equal.

[0007] According to a current collecting plate welding head provided by the utility model, each of the first flow channel includes: a first branch flow channel, which is connected to the first through hole, the extension direction of the first branch flow channel is consistent with the opening direction of the first through hole, and multiple first branch flow channels are connected to each other; a second branch flow channel, the second branch flow channel is connected to the first branch flow channel to form the bent flow channel.

[0008] According to a current collecting plate welding head provided by the utility model, the number of the second branch flow channels is multiple, and the second branch flow channels extend downward and penetrate the bottom surface of the adsorber to form multiple vacuum holes.

[0009] According to a current collecting plate welding head provided by the utility model, a plurality of the second branch flow channels are arranged in parallel, and the second branch flow channels are arranged perpendicular to the first branch flow channels.

[0010] According to a current collecting plate welding head provided by the utility model, the second flow channel includes: a third branch flow channel connected to the second through hole; and a fourth branch flow channel, wherein the fourth branch flow channel is connected to the third branch flow channel to form the bent flow channel.

[0011] According to a current collecting plate welding head provided by the utility model, the third branch flow channel is vertically arranged with respect to the fourth branch flow channel.

[0012] According to a current collecting plate welding head provided by the utility model, a plurality of third through holes are provided on the side of each of the absorbent bodies, and each of the third through holes is communicated with the fourth branch flow channel to form a blowing hole.

[0013] According to a collecting plate welding head provided by the utility model, the outer surface of the gas flow portion is provided with a first annular groove and a second annular groove, the bottom of the first annular groove is provided with a plurality of the first through holes, and the bottom of the second annular groove is provided with a plurality of the second through holes; a shell is sleeved on the outside of the gas flow portion, and the shell is provided with a fourth through hole and a fifth through hole, the fourth through hole is connected to the first annular groove, and the fifth through hole is connected to the second annular groove; a driver is included, the driver is connected to the shell, and the driver is used to drive the shell to move in a straight line.

[0014] The collector plate welding head provided in the embodiment of the utility model sets the first flow channel and the second flow channel as bent flow channels without cross-setting. When welding the collector plate, vacuuming and blowing are performed in the flow channel without interference, thereby ensuring the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the welding pressure head main body provided by the utility model;

[0017] Figure 2 yes Figure 1 A cross-sectional view of a collector plate welding head shown in FIG.

[0018] Figure 3 It is a structural schematic diagram of the current collecting plate welding pressure head provided by the utility model;

[0019] Reference numerals:

[0020] 10: welding head body; 11: gas flow part; 12: adsorption part; 13: first flow channel; 14: second flow channel; 20: housing; 30: driver;

[0021] 111: first annular groove; 112: second annular groove; 121: adsorbent; 131: first branch channel; 132: second branch channel; 141: third branch channel; 142: fourth branch channel;

[0022] 1111: first through hole; 1121: second through hole; 1321: vacuum hole; 1421: air blowing hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The features of the terms "first" and "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0025] Combine the following Figure 1-Figure 3 The utility model is described as a current collecting plate welding pressure head.

[0026] like Figure 1As shown, in an embodiment of the present utility model, the current collecting plate welding pressure head comprises: a welding pressure head body 10, and the welding pressure head body 10 comprises: a gas flow portion 11 and an adsorption portion 12. The gas flow portion 11 is provided with a first through hole 1111 and a second through hole 1121, the first through hole 1111 is used to extract gas, and the second through hole 1121 is used to inject welding shielding gas. The adsorption portion 12 is arranged in the gas flow portion 11 and connected to the gas flow portion 11, and a first flow channel 13 and a second flow channel 14 are provided in the adsorption portion 12, the first flow channel 13 and the second flow channel 14 are bent flow channels, and the first flow channel 13 and the second flow channel 14 are not arranged crosswise, wherein the first flow channel 13 is connected to the first through hole 1111, and the second flow channel 14 is connected to the second through hole 1121.

[0027] Specifically, the vacuum device is connected to the first through hole 1111 to extract the gas in the first flow channel 13, so that a negative pressure is formed in the first flow channel 13, and the adsorption part 12 uses the negative pressure to adsorb the current collecting plate. When the current collecting plate is welded, the shielding gas is ejected through the second flow channel 14. In this embodiment, the first flow channel 13 and the second flow channel 14 are both bent flow channels to guide the gas out from the bottom surface of the adsorption part 12, or to guide the gas from the gas flow part 11 to the bottom surface or side surface of the adsorption part 12, so that during the welding process of the current collecting plate, the vacuum extraction and the injection of the shielding gas flow in the diversion channel will not interfere with each other.

[0028] Furthermore, when the size of the adsorption portion 12 is equal to or smaller than the size of the collecting disk, the protective gas can be sprayed out from the side of the adsorption portion 12; and when the size of the adsorption portion 12 is larger than the size of the collecting disk, the protective gas can also be sprayed out from the bottom surface of the adsorption portion 12 that is not in contact with the collecting disk.

[0029] Furthermore, in the embodiment of the present utility model, the bend of the bent flow channel may be a right angle, or an acute angle or an obtuse angle close to a right angle.

[0030] The collector plate welding head provided in the embodiment of the utility model sets the first flow channel and the second flow channel as bent flow channels without cross-setting. When welding the collector plate, vacuuming and blowing are performed in the flow channel without interference, thereby ensuring the welding effect.

[0031] like Figure 1 As shown, in an embodiment of the present utility model, the adsorption part 12 includes a plurality of adsorbents 121, and the plurality of adsorbents 121 are connected to the gas flow part 11, and a first flow channel 13 and a second flow channel 14 are arranged in each adsorbent 121, and each adsorbent 121 is correspondingly provided with a first through hole 1111 and a second through hole 1121.

[0032] Specifically, in this embodiment, there are multiple ways to arrange the multiple adsorbents 121. The multiple adsorbents 121 can be arranged in parallel. At this time, both ends of each adsorbent 121 are connected to the gas flow portion 11. Each adsorbent 121 is provided with a first flow channel 13 and a second flow channel 14. When adsorbing the current collecting plate, the multiple adsorbents 121 work together to adsorb the current collecting plate. When the current collecting plate is welded, the multiple adsorbents 121 all spray out protective gas.

[0033] Optionally, the plurality of adsorbents 121 may also be arranged in accordance with Figure 1 The first ends of the plurality of adsorbents 121 are connected to each other, the second ends of the plurality of adsorbents 121 are connected to the gas flow portion 11, and the angles between two adjacent adsorbents 121 are equal.

[0034] Specifically, the multiple adsorbents 121 may also be arranged radially, in which case the first ends of the multiple adsorbents 121 are connected to each other, and the second end of each adsorbent 121 is connected to the gas flow portion 11. The number of the first through holes 1111 and the second through holes 1121 on the gas flow portion 11 matches the number of the adsorbents 121, so that each adsorbent 121 has the functions of vacuuming and gas injection. When the collecting plate is adsorbed, the multiple adsorbents 121 jointly adsorb the collecting plate, and when the collecting plate is welded, the multiple adsorbents 121 jointly spray out the protective gas.

[0035] Optionally, in Figure 1 In the illustrated embodiment, there are three adsorbents 121, and the angle between two adjacent adsorbents 121 is 120°. It is understandable that the number of adsorbents 121 can also be 4 or more to increase the contact area between the adsorbent portion 12 and the current collecting plate, thereby firmly adsorbing the current collecting plate.

[0036] like Figure 2 As shown, in the embodiment of the present utility model, each first flow channel 13 includes: a first branch flow channel 131 and a second branch flow channel 132. The first branch flow channel 131 is connected to the first through hole 1111, and the extension direction of the first branch flow channel 131 is consistent with the opening direction of the first through hole 1111. The plurality of first branch flow channels 131 are connected to each other. The second branch flow channel 132 is connected to the first branch flow channel 131 to form a bent flow channel.

[0037] Specifically, in this embodiment, the first branch channels 131 of the plurality of adsorbents 121 are connected to each other so that the air pressure in each first branch channel 131 is constant, so as to stably absorb the collecting plate or stably place the collecting plate. The bend between the first branch channel 131 and the second branch channel 132 can be a right angle, or an obtuse angle or an acute angle close to a right angle.

[0038] There are multiple second branch channels 132, which extend downward through the bottom surface of the adsorbent 121 to form multiple vacuum holes 1321. That is, the bottom surface of each adsorbent 121 has multiple vacuum holes 1321, so that the adsorption part 12 has a greater adsorption force, thereby firmly adsorbing the collecting plate.

[0039] Furthermore, in this embodiment, in order to facilitate processing, a plurality of second branch flow channels 132 are arranged in parallel, and the second branch flow channels 132 and the first branch flow channels 131 are arranged perpendicularly.

[0040] like Figure 2 As shown, in the embodiment of the present utility model, the second flow channel 14 includes: a third branch flow channel 141 and a fourth branch flow channel 142. The third branch flow channel 141 is connected to the second through hole 1121, and the fourth branch flow channel 142 is connected to the third branch flow channel 141 to form a bent flow channel.

[0041] Specifically, in this embodiment, the bend between the third branch channel 141 and the fourth branch channel 142 can be a right angle, or an obtuse angle or an acute angle close to a right angle. In this embodiment, for the convenience of processing, the third branch channel 141 and the fourth branch channel 142 are arranged vertically.

[0042] like Figure 2 As shown, in the embodiment of the present utility model, the first branch channel 131 is arranged in parallel with the third branch channel 141, and the length of the third branch channel 141 is less than the length of the first branch channel 131. The second branch channel 132 is arranged in parallel with the fourth branch channel 142, and the length of the fourth branch channel 142 is less than the length of the second branch channel 132, so that the first channel 13 and the second channel 14 form two unequal-sized curved channels, and the first channel 13 and the second channel 14 are arranged without crossing.

[0043] The fourth branch channel 142 passes through the bottom surface of the adsorbent 121 . A plurality of third through holes are provided on the side surface of each adsorbent 121 . Each of the third through holes is connected to the fourth branch channel 142 to form a blowing hole 1421 .

[0044] The shielding gas flows from the third branch channel 141 into the fourth branch channel 142. When the adsorption part 12 adsorbs the collecting plate, the collecting plate blocks the end of the fourth branch channel 142, causing the shielding gas to be unable to flow out from the end of the fourth branch channel 142. Therefore, a plurality of third through holes are arranged on the side of each adsorption body 121, and each of the third through holes is connected to the fourth branch channel 142, so that the shielding gas can be sprayed out from the third through holes.

[0045] like Figure 1As shown, in the embodiment of the present invention, one end of the adsorption portion 12 extends outside the gas flow portion 11 to facilitate adsorption of the collecting plate, and the blowing hole 1421 is also located outside the gas flow portion 11.

[0046] like Figure 1 and Figure 3 As shown, in the embodiment of the utility model, the outer surface of the gas flow portion 11 is provided with a first annular groove 111 and a second annular groove 112, the groove bottom of the first annular groove 111 is provided with a plurality of first through holes 1111, and the groove bottom of the second annular groove 112 is provided with a plurality of second through holes 1121. The housing 20 is sleeved on the outside of the gas flow portion 11, and the housing 20 is provided with a fourth through hole and a fifth through hole, the fourth through hole is communicated with the first annular groove 111, and the fifth through hole is communicated with the second annular groove 112.

[0047] Specifically, the fourth through hole is used to connect to the exhaust pipe, and the fifth through hole is used to connect to the gas injection pipe. The gas in the first flow channel 13 of each adsorbent 121 is sucked into the first annular groove 111, and then extracted through the exhaust pipe, so that a negative pressure is formed in each adsorbent 121. The shielding gas enters the second annular groove 112 through the gas injection pipe, and enters the corresponding second flow channel 14 through each second through hole 1121, and then is ejected from the blowing hole 1421 on the side of each adsorbent 121 to provide shielding gas for the welding process.

[0048] like Figure 3 As shown, in an embodiment of the present utility model, the collector plate welding head further includes a driver 30, the driver 30 is connected to the housing 20, and the driver 30 is used to drive the housing 20 to move in a straight line.

[0049] Specifically, after the current collecting plate is loaded, the driver 30 drives the welding head body 10 to move downward, and the adsorption part 12 uses negative pressure to adsorb the current collecting plate and adsorbs the current collecting plate to the welding station. At the welding station, the blowing hole 1421 of each adsorption body 121 sprays out protective gas to provide protective gas for the welding process.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A collector plate welding head, characterized in that: It includes a welding head body, and the welding head body includes: A gas flow portion, wherein the gas flow portion is provided with a first through hole and a second through hole, wherein the first through hole is used for extracting gas, and the second through hole is used for injecting welding shielding gas; The adsorption portion is arranged in the gas flow portion and connected to the gas flow portion. The adsorption portion is provided with a first flow channel and a second flow channel. The first flow channel and the second flow channel are bent flow channels, and the first flow channel and the second flow channel are not cross-arranged. The first flow channel is connected to the first through hole, and the second flow channel is connected to the second through hole.

2. The current collecting plate welding head according to claim 1, characterized in that: The adsorption part includes a plurality of adsorbents, and the plurality of adsorbents are connected to the gas flow part. The first flow channel and the second flow channel are arranged in each of the adsorbents, and each of the adsorbents is correspondingly provided with a first through hole and a second through hole.

3. The current collecting plate welding head according to claim 2, characterized in that: The first ends of the plurality of adsorbents are connected to each other, the second ends of the plurality of adsorbents are connected to the gas flow portion, and the angles between two adjacent adsorbents are equal.

4. The collector plate welding head according to claim 2, characterized in that: Each of the first flow channels comprises: a first branch flow channel connected to the first through hole, wherein the extending direction of the first branch flow channel is consistent with the opening direction of the first through hole, and a plurality of the first branch flow channels are connected to each other; A second branch flow channel is connected to the first branch flow channel to form the bent flow channel.

5. The current collecting plate welding head according to claim 4, characterized in that: There are multiple second branch flow channels, and the second branch flow channels extend downward and penetrate the bottom surface of the adsorber to form multiple vacuum holes.

6. The current collecting plate welding head according to claim 5, characterized in that: A plurality of the second branch flow channels are arranged in parallel, and the second branch flow channels are arranged perpendicular to the first branch flow channels.

7. The current collecting plate welding head according to claim 2, characterized in that: The second flow channel comprises: a third branch flow channel, connected to the second through hole; A fourth branch flow channel is connected to the third branch flow channel to form the meandering flow channel.

8. The current collecting plate welding head according to claim 7, characterized in that: The third branch flow channel is arranged perpendicularly to the fourth branch flow channel.

9. The current collecting plate welding head according to claim 7, characterized in that: A plurality of third through holes are arranged on the side surface of each of the adsorbent bodies, and each of the third through holes is communicated with the fourth branch flow channel to form an air blowing hole.

10. The current collecting plate welding head according to claim 1, characterized in that: The outer surface of the gas flow portion is provided with a first annular groove and a second annular groove, the bottom of the first annular groove is provided with a plurality of the first through holes, and the bottom of the second annular groove is provided with a plurality of the second through holes; A shell, sleeved on the outside of the gas flow portion, the shell is provided with a fourth through hole and a fifth through hole, the fourth through hole is communicated with the first annular groove, and the fifth through hole is communicated with the second annular groove; A driver is connected to the housing and is used to drive the housing to move in a straight line.

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