Lithium battery welding base parallelism correction device

Abstract

The invention relates to the technical field of battery manufacturing and welding, and discloses a lithium battery welding base parallelism correcting device which comprises a welding head support structure and a base structure, the welding head support structure is fixedly installed on the base structure, a welding head is fixedly connected to the lower end of the welding head support structure, and the base structure comprises a bottom die fixing base body. The bottom die fixing seat body is connected with the bottom die fixing seat connecting piece through a limiting structure and a locking structure, the bottom die fixing seat connecting piece is connected to the supporting frame through a fixing structure, and an adjusting structure for adjusting the height of the bottom die fixing seat body is arranged on the side, away from the limiting structure, of the lower end of the bottom die fixing seat body. The bottom die fixing seat connecting piece and the supporting frame are simple and efficient, parallelism adjustment of front and rear points can be effectively achieved, stability is high, and rapid, simple and practical correction is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of battery manufacturing welding, and in particular to a parallelism correction device for a lithium battery welding base. Background Art

[0002] Lithium-ion soft-pack batteries have excellent properties such as long cycle life, high energy density and small size. At the same time, the internal resistance is small, which helps to reduce the battery's self-consumption and makes the battery have good cycle life and rate characteristics. In the welding process, the pole ears are welded on the copper and aluminum foil by an ultrasonic welding mechanism, and then the positive plate, negative plate and isolation membrane of the battery are assembled into a square battery cell in a continuous rotation manner through a winding device. In the process, the design of the traditional welding mechanism is too clumsy, and the debugging and installation are troublesome and complicated, which seriously affects the welding efficiency and product quality. In normal production or model switching, the biggest problem is that the traditional base structure is a fixed part, and the position of the welding head needs to be adjusted, which is time-consuming and labor-intensive, and the efficiency is reduced. At the same time, the stability will be reduced, the mechanism parts are seriously worn, and the accuracy is seriously reduced.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the application and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in the field. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium battery welding base parallelism correction device, which is simple and efficient, can effectively adjust the parallelism of front and rear points, has high stability, and realizes fast, simple and practical correction.

[0005] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions: A parallelism correction device for a lithium battery welding base, comprising a welding head support structure and a base structure, wherein the welding head support structure is fixedly mounted on the base structure, and a welding head body is fixedly connected to the lower end of the welding head support structure; The base structure includes a bottom mold fixing seat body, a bottom mold fixing seat connecting piece and a support frame, the bottom mold fixing seat body is connected to the bottom mold fixing seat connecting piece through a limiting structure and a locking structure, the bottom mold fixing seat connecting piece is connected to the support frame through a fixing structure, and an adjustment structure for adjusting the height of the bottom mold fixing seat body is provided on the side of the lower end of the bottom mold fixing seat body away from the limiting structure, the adjustment structure passes through the bottom mold fixing seat connecting piece and the support frame, and the bottom mold body is installed on the bottom mold fixing seat body.

[0006] Optionally, the welding head support structure comprises a cylinder, a connecting structure is fixedly connected to the end of the cylinder, and the welding head is fixedly installed in the middle of the connecting structure.

[0007] Optionally, the connecting structure includes a cylinder connecting piece, a first amplitude changing rod, a second amplitude changing rod, a first ferrule and a second ferrule, and the first amplitude changing rod and the second amplitude changing rod are connected to each other via a first ferrule and a second ferrule on both sides of the lower end of the cylinder connecting piece, respectively, and the welding head is fixedly installed between the first amplitude changing rod and the second amplitude changing rod.

[0008] Optionally, one end of the second horn is connected to a transducer and a data line.

[0009] Optionally, a limiting member is fixedly connected to the top of the cylinder.

[0010] Optionally, the limiting structure includes a positioning pin, a first locking screw and a second locking screw, the bottom mold fixing seat body and the bottom mold fixing seat connecting piece are rotatably connected via the positioning pin, and the first locking screw and the second locking screw fix the position of the positioning pin.

[0011] Optionally, the locking structure includes a third locking screw and a fourth locking screw, and the third locking screw and the fourth locking screw are arranged beside the limiting structure to fix the bottom mold fixing seat connecting piece and the bottom mold fixing seat body.

[0012] Optionally, the adjustment structure includes an adjustable screw and a locking nut, one end of the adjustable screw is fixedly connected to the bottom mold fixing seat body, and the locking nut is installed at the connection between the adjustable screw and the support frame.

[0013] Optionally, the fixing structure includes a guide rail and an adjustable tightening handle screw, the guide rail is installed on the support frame to limit the bottom mold fixing seat connection part, and the bottom mold fixing seat connection part and the support frame are then fixed by the adjustable tightening handle screw.

[0014] Optionally, the bottom mold mounting structure includes a fifth locking screw and a sixth locking screw to fix the bottom mold body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: After removing the locking structure, the bottom mold fixing seat body is adjusted through the adjustment structure, so that the bottom mold fixing seat body can be fine-tuned in height around the limiting structure to ensure that the relative position of the bottom mold fixing seat body and the welding head is in the best working position, reducing the friction between the welding head and the base structure during production to achieve quick, simple and practical corrections. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the structure of a welding head bracket provided by an embodiment of a parallelism correction device for a lithium battery welding base of the present invention; Figure 2 It is a schematic diagram of the base structure provided by an embodiment of a parallelism correction device for a lithium battery welding base of the present invention; Figure 3 It is an overall schematic diagram of a welding mechanism provided by an embodiment of a parallelism correction device for a lithium battery welding base of the present invention; Figure 4 It is a side sectional view of a base structure provided by an embodiment of a parallelism correction device for a lithium battery welding base of the present invention.

[0018] The markings in the figure are: 01, welding head bracket structure; 100, limit piece; 101, cylinder; 102, first amplitude change rod; 103, second amplitude change rod; 104, first ferrule; 105, second ferrule; 106, first ferrule screw; 107, second ferrule screw; 108, welding head; 109, transducer; 110, data cable; 02, base structure; 200, bottom mold body; 201, bottom mold fixing seat body; 202, positioning pin; 203, first locking screw; 204, second locking screw; 205, bottom mold fixing seat connecting piece; 206, adjustable tightening handle screw; 207, guide rail; 208, support frame; 209, adjustable screw; 210, locking nut; 211, fifth locking screw; 212, sixth locking screw; 213, third locking screw; 214, fourth locking screw. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Example

[0020] A parallelism correction device for a lithium battery welding base, such as Figure 1~Figure 4As shown, it includes a welding head support structure 01 and a base structure 02, the welding head support structure 01 is fixedly installed on the base structure 02, the lower end of the welding head support structure 01 is fixedly connected with a welding head 108, the base structure 02 includes a bottom mold fixing seat body 201, a bottom mold fixing seat connecting piece 205 and a support frame 208, the bottom mold fixing seat body 201 is connected to the bottom mold fixing seat connecting piece 205 through a limiting structure and a locking structure, the bottom mold fixing seat connecting piece 205 is connected to the support frame 208 through a fixing structure, and the bottom end of the bottom mold fixing seat body 201 is far away from the limiting structure. There is an adjustment device for adjusting the height of the bottom mold fixing seat body 201 Structure, the adjustment structure passes through the bottom mold fixing seat connecting piece 205 and the support frame 208, and the bottom mold fixing seat body 201 is installed with the bottom mold body 200. After the locking structure is removed, the bottom mold fixing seat body 201 is adjusted by rotating the adjustment structure to pass through the bottom mold fixing seat connecting piece 205 and the support frame 208, so that the bottom mold fixing seat body 201 can be fine-tuned in height around the limiting structure to ensure that the relative position of the bottom mold fixing seat body 201 and the welding head 108 is in the best working position, reducing the friction between the welding head 108 and the base structure 02 during production to achieve quick, simple and practical corrections.

[0021] The welding head support structure 01 includes a cylinder 101, the end of the cylinder 101 is fixedly connected to a connecting structure, a welding head 108 is fixedly installed in the middle of the connecting structure, the height of the welding head 108 is adjusted by the cylinder 101, and the connecting structure makes the installation of the welding head 108 more stable.

[0022] The connecting structure includes a cylinder connecting piece, a first amplitude transformer 102, a second amplitude transformer 103, a first ferrule 104 and a second ferrule 105. The first amplitude transformer 102 and the second amplitude transformer 103 are connected to each other through the first ferrule 104 and the second ferrule 105 on both sides of the lower end of the cylinder connecting piece. The welding head 108 is fixedly installed between the first amplitude transformer 102 and the second amplitude transformer 103. The first amplitude transformer 102, the second amplitude transformer 103 and the welding head 108 are fixedly installed through the first ferrule 104 and the second ferrule 105. The first amplitude transformer 102 and the second amplitude transformer 103 cooperate with the transducer 109 to convert the received electrical energy into ultrasonic mechanical energy of the welding head 108.

[0023] The limiting structure includes a positioning pin 202, a first locking screw 203 and a second locking screw 204. The bottom mold fixing seat body 201 and the bottom mold fixing seat connecting piece 205 are rotatably connected through the positioning pin 202. The first locking screw 203 and the second locking screw 204 fix the position of the positioning pin 202. The first locking screw 203 and the second locking screw 204 fix the position of the positioning pin 202. The positioning pin 202 limits the connection position of the bottom mold fixing seat connecting piece 205 and the bottom mold fixing seat body 201.

[0024] The locking structure includes a third locking screw 213 and a fourth locking screw 214. The third locking screw 213 and the fourth locking screw 214 are arranged next to the limiting structure to fix the bottom mold fixing seat connection 205 and the bottom mold fixing seat body 201. When height adjustment is not required, the third locking screw 213 and the fourth locking screw 214 are used to fix and lock the bottom mold fixing seat connection 205 and the bottom mold fixing seat body 201.

[0025] The adjustment structure includes an adjustable screw 209 and a locking nut 210. One end of the adjustable screw 209 is fixedly connected to the bottom mold fixing seat body 201. The locking nut 210 is installed at the connection between the adjustable screw 209 and the support frame 208. When the adjustable screw 209 needs to be adjusted, the locking nut 210 is loosened and the adjustable screw 209 is rotated to adjust the height of the bottom mold fixing seat body 201.

[0026] The fixing structure includes a guide rail 207 and an adjustable tightening handle screw 206. The guide rail 207 is installed on the support frame 208 to limit the bottom mold fixing seat connection 205. The bottom mold fixing seat connection 205 and the support frame 208 are then fixed by the adjustable tightening handle screw 206. The adjustable tightening handle screw 206 allows the relative position of the support frame 208 and the bottom mold fixing seat connection 205 to be slightly adjusted.

[0027] The bottom mold installation structure includes a fifth locking screw 211 and a sixth locking screw 212 , which are used to fix the bottom mold body 200 and ensure the stability of the installation of the bottom mold body 200 . Example

[0028] Based on Example 1, an implementation method of a parallelism correction device for a lithium battery welding base is provided: One end of the second horn 103 is connected to a transducer 109 and a data line 110 , and the top of the cylinder 101 is fixedly connected to a limiting member 100 .

[0029] Different from the first embodiment, the transducer 109 and the data line 110 provide driving power for the welding head 108, and the limiter 100 is fixedly connected to the top of the cylinder 101 to limit the travel distance of the welding head 108, which can maximize the welding quality and extend the service life of the welding head 108.

[0030] Working process: After removing the locking structure, the bottom mold fixing seat body 201 is adjusted by rotating the adjustment structure to pass through the bottom mold fixing seat connecting piece 205 and the support frame 208 to adjust one end of the bottom mold fixing seat body 201, so that the bottom mold fixing seat body 201 can be fine-tuned in height around the limiting structure to ensure that the relative position of the bottom mold fixing seat body 201 and the welding head 108 is in the best working position, reducing the friction between the welding head 108 and the base structure 02 during production to achieve quick, simple and practical corrections.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only used to explain the relative position relationship, movement, etc. between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0033] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A parallelism correction device for a lithium battery welding base, characterized in that: It comprises a welding head support structure (01) and a base structure (02), wherein the welding head support structure (01) is fixedly mounted on the base structure (02), and a welding head (108) is fixedly connected to the lower end of the welding head support structure (01); The base structure (02) comprises a bottom mold fixing seat body (201), a bottom mold fixing seat connecting piece (205) and a support frame (208); the bottom mold fixing seat body (201) is connected to the bottom mold fixing seat connecting piece (205) via a limiting structure and a locking structure; the bottom mold fixing seat connecting piece (205) is connected to the support frame (208) via a fixing structure; an adjustment structure for adjusting the height of the bottom mold fixing seat body (201) is provided on a side of the lower end of the bottom mold fixing seat body (201) away from the limiting structure; the adjustment structure passes through the bottom mold fixing seat connecting piece (205) and the support frame (208); and the bottom mold body (200) is installed on the bottom mold fixing seat body (201) via a bottom mold installation structure.

2. The parallelism correction device for a lithium battery welding base according to claim 1, characterized in that: The welding head support structure (01) comprises a cylinder (101), the end of the cylinder (101) is fixedly connected to a connecting structure, and the welding head (108) is fixedly mounted in the middle of the connecting structure.

3. The parallelism correction device for a lithium battery welding base according to claim 2, characterized in that: The connection structure comprises a cylinder connection piece, a first amplitude changing rod (102), a second amplitude changing rod (103), a first clamping sleeve (104) and a second clamping sleeve (105); the first amplitude changing rod (102) and the second amplitude changing rod (103) are connected to the first amplitude changing rod (102) and the second amplitude changing rod (103) at two sides of the lower end of the cylinder connection piece through the first clamping sleeve (104) and the second clamping sleeve (105) respectively; the welding head (108) is fixedly mounted between the first amplitude changing rod (102) and the second amplitude changing rod (103).

4. The parallelism correction device for a lithium battery welding base according to claim 3, characterized in that: One end of the second horn (103) is connected to a transducer (109) and a data line (110).

5. The parallelism correction device for a lithium battery welding base according to claim 2, characterized in that: The top of the cylinder (101) is fixedly connected to a limiting member (100).

6. The parallelism correction device for a lithium battery welding base according to claim 1, characterized in that: The limiting structure comprises a positioning pin (202), a first locking screw (203) and a second locking screw (204); the bottom mold fixing seat body (201) and the bottom mold fixing seat connecting piece (205) are rotatably connected via the positioning pin (202); and the first locking screw (203) and the second locking screw (204) fix the position of the positioning pin (202).

7. The parallelism correction device for a lithium battery welding base according to claim 1, characterized in that: The locking structure comprises a third locking screw (213) and a fourth locking screw (214), and the third locking screw (213) and the fourth locking screw (214) are arranged beside the limiting structure to fix the bottom mold fixing seat connecting piece (205) and the bottom mold fixing seat body (201).

8. The parallelism correction device for a lithium battery welding base according to claim 1, characterized in that: The adjustment structure comprises an adjustable screw (209) and a locking nut (210); one end of the adjustable screw (209) is fixedly connected to the bottom mold fixing seat body (201); and the locking nut (210) is installed at the connection between the adjustable screw (209) and the support frame (208).

9. The parallelism correction device for a lithium battery welding base according to claim 1, characterized in that: The fixing structure comprises: a guide rail (207) and an adjustable tightening handle screw (206); the guide rail (207) is mounted on a support frame (208) to limit the bottom mold fixing seat connecting piece (205); the bottom mold fixing seat connecting piece (205) and the support frame (208) are then fixed by the adjustable tightening handle screw (206).

10. The parallelism correction device for a lithium battery welding base according to claim 1, characterized in that: The bottom mold installation structure comprises a fifth locking screw (211) and a sixth locking screw (212) for fixing the bottom mold body (200).

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