Ultrasonic roll welding device

Abstract

The utility model discloses an ultrasonic roll welding device which comprises two ultrasonic generators arranged side by side. The bearing table is fixed between the two ultrasonic generators through a bracket; the material loading table is arranged on the sliding rail in a sliding manner through a driving assembly to drive the battery cell to move; the welding head is arranged on one side wall of the ultrasonic generator, and one side of the welding head and the ultrasonic generator are rotationally matched and connected with a tab smoothing block; the sponge bin is arranged at the upper end of one side wall of the ultrasonic generator so as to absorb the scaling powder; by arranging the ultrasonic generator, the bearing table, the material carrying table, the welding head and the sponge bin, battery cells of different models can be firmly fixed, the battery cells are driven to move at a constant speed in the horizontal direction, and then the abnormal conditions of insufficient welding, over-welding and adhesion of the welding head to the battery cell tab during welding are avoided under the action of the tab flattening block and the soldering flux.

Description

Technical Field

[0001] The utility model specifically relates to an ultrasonic seam welding device. Background Technique

[0002] With the development of the new energy industry, the requirements for batteries are getting higher and higher, and the demand for batteries is also increasing; for example, the power batteries used in new energy vehicles need to be ultrasonically welded to the battery tabs during the production process.

[0003] Currently, due to the increasing size design of the battery cell tabs, the tabs are prone to folding and wrinkling during the previous process production. Traditional ultrasonic welding cannot apply flux, which easily leads to problems such as false soldering, over-welding, and sticking of the welding head. Moreover, due to the continuous increase in the tab size, traditional fixed welding is also difficult to meet the R & D high-frequency model change requirements. Therefore, we propose an ultrasonic seam welding device. Content of the Utility Model

[0004] The purpose of the utility model is to provide an ultrasonic seam welding device to solve the problems raised in the above background technique, namely, the battery cell tabs are folded and wrinkled before welding, which is not convenient to smooth, and traditional ultrasonic welding cannot apply flux.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An ultrasonic seam welding device, comprising:

[0006] Two ultrasonic generators arranged side by side;

[0007] A carrier table fixed between the two ultrasonic generators through a bracket;

[0008] A loading table slidably arranged on a slide rail through a driving component to drive the battery cell to move;

[0009] A welding head is arranged on one side wall of the ultrasonic generator, and an ear flattening block is rotationally connected to one side of the welding head and the ultrasonic generator;

[0010] A sponge bin is arranged at the upper end of one side wall of the ultrasonic generator to absorb the flux.

[0011] Preferably, the driving component includes a lead screw, a motor, a slide rail, and a control switch. The motor is fixed at one end of the upper surface of the carrier table, and the output end of the motor is connected to a lead screw that is in threaded cooperation with the loading table. The slide rail is fixed at the edge of the upper surface of the carrier table to guide the loading table, and the control switch is arranged at the other end of the upper surface of the carrier table and is connected to the motor through a wire.

[0012] Preferably, there are two slide rails, and the two slide rails are symmetrically distributed along the lead screw.

[0013] Preferably, a battery cell fixing block is detachably connected to the loading platform to position and fix the battery cell.

[0014] Preferably, the welding heads are arranged at two locations along the height direction of the ultrasonic generator, and the rotation directions of the welding heads at the two locations are opposite.

[0015] Preferably, a limit sensor is arranged on the supporting platform, and two limit sensors are arranged along a long side of the supporting platform, and both of the two limit sensors are electrically connected to the control switch.

[0016] Preferably, a water-absorbent sponge is arranged inside the sponge bin, and the water-absorbent sponge is in contact with the welding head.

[0017] Preferably, the tab smoothing block is in the shape of a Chinese character "丿".

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] This patent is equipped with an ultrasonic generator, a supporting platform, a loading platform, a welding head and a sponge bin, which makes it easy to firmly fix different types of battery cells and drive the battery cells to move at a uniform speed in the horizontal direction. Then, through the action of the tab smoothing block and the flux, the abnormal conditions of cold welding, over-welding and tab sticking to the welding head in the battery tab welding are avoided, which greatly improves the efficiency and quality of ultrasonic welding of the battery tab. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the tab smoothing block of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the limit sensor of the utility model.

[0023] In the figure: 101, carrier platform; 102, screw rod; 103, motor; 104, slide rail; 105, loading platform; 106, battery cell fixing block; 107, limit sensor; 108, control switch; 201, welding head; 202, sponge bin; 203, tab smoothing block; 204, ultrasonic generator. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0025] Please refer to Figures 1-3 , the present utility model provides a technical solution: an ultrasonic seam welding device, comprising:

[0026] Two ultrasonic generators 204 arranged side by side, which is convenient for ultrasonic seam welding;

[0027] A bearing table 101, which is fixed between the two ultrasonic generators 204 through a bracket;

[0028] A material loading table 105, which is slidably arranged on a slide rail 104 through a driving component to drive the battery cell to move, facilitating the movement of the battery cell during welding;

[0029] A welding head 201 is arranged on one side wall of the ultrasonic generator 204, and an ear flattening block 203 is rotationally and cooperatively connected to one side of the welding head 201 and the ultrasonic generator 204, which is convenient for flattening the battery cell ears and avoiding the folding and wrinkling of the battery cell ears from affecting the welding;

[0030] A sponge bin 202 is arranged at the upper end of one side wall of the ultrasonic generator 204 to absorb the soldering flux, which is convenient for coating the soldering flux, thereby improving the yield rate during welding.

[0031] In this embodiment, preferably, the driving component includes a lead screw 102, a motor 103, a slide rail 104 and a control switch 108. The motor 103 is fixed at one end of the upper surface of the bearing table 101, and the output end of the motor 103 is connected with a lead screw 102 that is in threaded cooperation with the material loading table 105. The slide rail 104 is fixed at the edge of the upper surface of the bearing table 101 to guide the material loading table 105. The control switch 108 is arranged at the other end of the upper surface of the bearing table 101 and is connected to the motor 103 through a wire, which is convenient for driving the material loading table 105 to move to drive the battery cell to move.

[0032] In this embodiment, preferably, there are two slide rails 104, and the two slide rails 104 are symmetrically distributed along the lead screw 102, which is convenient for guiding the moving direction of the material loading table 105, so that it can move horizontally better.

[0033] In this embodiment, preferably, a battery cell fixing block 106 is detachably connected to the material loading table 105 to position and fix the battery cell, which is convenient for replacing the battery cell fixing block 106 according to different models of battery cells to adapt to the fixing of different models of battery cells.

[0034] In this embodiment, preferably, there are two welding heads 201 arranged along the height direction of the ultrasonic generator 204, and the rotation directions of the two welding heads 201 are opposite, which is convenient for ultrasonic seam welding.

[0035] In this embodiment, preferably, a limit sensor 107 is provided on the supporting platform 101 , and two limit sensors 107 are provided along a long side of the supporting platform 101 , and both limit sensors 107 are electrically connected to the control switch 108 to facilitate limiting the moving position of the loading platform 105 .

[0036] In this embodiment, preferably, a water-absorbent sponge is provided inside the sponge bin 202 , and the water-absorbent sponge is in contact with the welding head 201 to absorb the flux, thereby providing the flux during ultrasonic roll welding.

[0037] In this embodiment, preferably, the tab smoothing block 203 is in the shape of a Chinese character "丿", so as to better smooth the folds and wrinkles of the tab of the battery cell.

[0038] The working principle and use process of the utility model are as follows: when in use, the technician first opens the outer cover of the sponge bin 202, adds an appropriate amount of flux, allows the sponge inside the sponge bin 202 to fully absorb the flux, and then replaces the outer cover of the sponge bin 202; adjusts the energy, power, amplitude and other parameters of the ultrasonic generator 204 to a suitable range; turns on the control switch 108, presses the reset button, the motor 103 drives the screw rod 102 to rotate, and the screw rod 102 drives the loading platform 105 to move horizontally to the right to the position of the limit sensor 107 and then stops; the technician adjusts the position of the battery cell fixing block 106 according to the required size of the battery cell to be processed, and then puts the battery cell into the battery cell fixing block 106, presses the start button on the control switch 108, and the motor 103 drives the screw rod 102 Rotating in the opposite direction, the screw rod 102 drives the loading platform 105 to move horizontally to the left; the battery cell passes through the tab smoothing block 203 to smooth the tab, and after the switch is started and the upper welding head 201 coated with flux moves downward close to the lower welding head 201, the upper welding head 201 rotates clockwise, and the lower welding head 201 rotates counterclockwise, and the ultrasonic generator 204 starts to work and output ultrasonic energy; after the battery cell passes the welding head 201, the tab welding is completed, the loading platform 105 stops after reaching the left sensor, the welding head 201 is reset, and the ultrasonic generator 204 stops working. After a short time, the motor 103 drives the screw rod 102 to rotate to drive the loading platform 105 to move horizontally to the right to the limit sensor 107 and then stops, and continues the loading processing of the next battery cell.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic roll welding device, characterized in that: Including: Two ultrasonic generators (204) arranged side by side; A carrier table (101) fixed between the two ultrasonic generators (204) by brackets; A material loading table (105) slidably arranged on a slide rail (104) through a driving assembly to drive the battery cell to move; A welding head (201) arranged on one side wall of the ultrasonic generator (204), and an ear flattening block (203) is rotationally connected to one side of the welding head (201) and the ultrasonic generator (204); A sponge bin (202) arranged at the upper end of one side wall of the ultrasonic generator (204) to absorb the soldering flux.

2. The ultrasonic seam welding device according to claim 1, characterized in that: The driving assembly includes a lead screw (102), a motor (103), a slide rail (104) and a control switch (108). The motor (103) is fixed at one end of the upper surface of the carrier table (101), and the output end of the motor (103) is connected to a lead screw (102) that is in threaded cooperation with the material loading table (105). The slide rail (104) is fixed at the edge of the upper surface of the carrier table (101) to guide the material loading table (105), and the control switch (108) is arranged at the other end of the upper surface of the carrier table (101) and is connected to the motor (103) through a wire.

3. The ultrasonic seam welding device according to claim 2, characterized in that: There are two slide rails (104), and the two slide rails (104) are symmetrically distributed along the lead screw (102).

4. The ultrasonic seam welding device according to claim 1, characterized in that: A battery cell fixing block (106) is detachably connected to the material loading table (105) to position and fix the battery cell.

5. The ultrasonic seam welding device according to claim 1, characterized in that: There are two welding heads (201) arranged along the height direction of the ultrasonic generator (204), and the rotation directions of the two welding heads (201) are opposite.

6. The ultrasonic seam welding device according to claim 1, characterized in that: Limit sensors (107) are arranged on the carrier table (101). Two limit sensors (107) are arranged along one long side of the carrier table (101), and both of the two limit sensors (107) are electrically connected to the control switch (108).

7. The ultrasonic seam welding device according to claim 1, characterized in that: Absorbent sponges are arranged inside the sponge bin (202), and the absorbent sponges are in contact with the welding head (201).

8. The ultrasonic seam welding device according to claim 1, characterized in that: The ear flattening block (203) is in the shape of a "丿".

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