An ultrasonic welding tool for lithium battery production

Abstract

The present invention discloses an ultrasonic welding tooling for lithium battery production, which relates to the technical field of lithium battery manufacturing. It includes a positioning bar, a positioning plate, a hinged bar, a support plate and a support spring. The positioning bar is horizontally arranged and a rectangular first positioning groove is provided in the center on its upper side. There are a pair of positioning plates, which are symmetrically distributed on the left and right sides of the positioning bar. A rectangular second positioning groove is provided on the inner side of the upper side of the positioning plate. There are two pairs of hinged bars, which are symmetrically distributed on the front and back sides of the positioning bar. The two positioning bars on the same side are symmetrically distributed left and right. The inner extending end of the hinged bar is hinged to the positioning bar, and the outer extending end of the hinged bar is slidably connected to the positioning plate. The support plate is of a "U" shape and is located directly below the positioning bar. The left and right top surfaces of the support plate respectively abut against the bottom surfaces of the left and right positioning plates. There is a row of support springs, which are connected at equal intervals between the positioning bar and the support plate. In summary, the ultrasonic welding tooling for lithium battery production in the present invention has the characteristics of ingenious scheme conception, reasonable structural design and convenient practical use.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery manufacturing, and in particular to an ultrasonic welding tool for lithium battery production. Background Art

[0002] A battery cell refers to a single electrochemical cell containing a positive and a negative electrode, which is generally not used directly. The battery cell is an important component of the battery. During the production and manufacturing process of the battery cell, it is necessary to weld an adapter on the tab of the battery cell. The adapter is in the form of a thin sheet with two welding areas that match the tab.

[0003] At present, the existing welding tooling is only applicable to the welding process between the tabs on the battery cell and the independent adapter, but not to the welding process between the tabs on the battery cell and the adapter pre-installed on the top cover. In addition, after completing the above welding process, the tabs and the adapter need to be manually bent, so the electrical performance of the intermediate product cannot be guaranteed to be uniform and reliable. Summary of the invention

[0004] The purpose of the present invention is to provide an ultrasonic welding tool for lithium battery production to solve the above-mentioned defects caused by the prior art.

[0005] An ultrasonic welding tool for lithium battery production, comprising a positioning bar, a positioning plate, a hinge bar, a support plate and a support spring, wherein:

[0006] The positioning strip is arranged horizontally and is provided with a rectangular positioning slot 1 in the center of its upper side, two pairs of rectangular limiting openings 1 are symmetrically arranged on the left and right sides of the positioning slot 1, the limiting opening 1 is connected to the positioning slot 1, a rectangular avoidance slot 1 is symmetrically arranged at the bottom of the positioning slot 1, a uniformly distributed adsorption hole 1 is arranged at the center of the bottom of the positioning slot 1, a front-to-back air suction hole 1 is arranged below the positioning slot 1, the air suction hole 1 is connected to the adsorption hole 1, an air suction pipe 1 is connected to the front and rear ports of the air suction hole 1, two pairs of convex columns 1 are symmetrically arranged on the front and rear sides of the positioning strip 1, and the two convex columns 1 on the same side are symmetrically distributed left and right;

[0007] The positioning plate is provided with a pair of symmetrically distributed on the left and right sides of the positioning strip, the upper side of the positioning plate is provided with a rectangular positioning groove 2, the bottom of the positioning groove 2 is provided with a uniformly distributed adsorption hole 2 in the center, the lower part of the positioning groove 2 is provided with a left and right suction hole 2, the suction hole 2 is connected to the adsorption hole 2, the outer port of the suction hole 2 is connected to the suction pipe 2, and the front and rear sides of the positioning plate are symmetrically provided with a pair of convex columns 2;

[0008] There are two pairs of the hinge bars, which are symmetrically distributed on the front and rear sides of the positioning bar. The two positioning bars on the same side are symmetrically distributed left and right. The hinge bar is of a "﹁" - shaped structure. The inner extending end of the hinge bar is provided with a circular hinge hole and is correspondingly hinged on the first convex post. The outer extending end of the hinge bar is provided with a rectangular sliding groove and is correspondingly slidably mounted on the second convex post;

[0009] The support plate is of a "凵" - shaped structure and is located directly below the positioning bar. The left and right top surfaces of the support plate respectively abut against the bottom surfaces of the left and right positioning plates;

[0010] There is a row of support springs, which are connected at equal intervals between the positioning bar and the support plate.

[0011] Preferably, cylindrical pick - up and placement grooves one are symmetrically provided on the front and rear sides of the first positioning groove. The pick - up and placement groove one is communicated with the first positioning groove.

[0012] Preferably, cylindrical pick - up and placement grooves two are symmetrically provided on the front and rear sides of the second positioning groove. The pick - up and placement groove two is communicated with the second positioning groove.

[0013] Preferably, a circular pressing piece is horizontally welded on the outer side of the hinge bar.

[0014] Preferably, a "[" - shaped lifting and placing bar is horizontally welded on the outer side of the positioning plate.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. Convenient positioning. Place a top cover pre - installed with a pair of adapter plates horizontally in the first positioning groove of the middle positioning bar, and then adsorb the top cover through the negative pressure condition at the first adsorption hole; Place a battery cell horizontally in the second positioning grooves of the two side positioning plates respectively, and let a pair of pole ears on the battery cell pass through a pair of first limiting openings and rest on the upper side of a pair of adapter plates, and then adsorb the battery cell through the negative pressure condition at the second adsorption hole.

[0017] 2. Convenient bending. After completing the welding process, manually press down the middle positioning bar and the front and rear pairs of pressing pieces simultaneously to drive the positioning bar and the hinge bar to move vertically downward. Since the battery cell and the top cover are both adsorbed, the pole ears will be bent downward and the adapter plates will be bent upward to complete the preliminary bending work; Pause the negative pressure condition at the second adsorption hole, and then manually lift the left and right lifting and placing bars simultaneously to drive the two positioning plates to turn upward until the two battery cells are vertically abutted against each other to complete the final bending work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three - dimensional structure schematic diagram of the whole of the present invention.

[0019] Figure 2It is a schematic diagram of the structure of the positioning strip in the present invention.

[0020] Figure 3 It is a structural schematic diagram of the positioning plate in the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the hinge strip in the present invention.

[0022] Figure 5 It is a schematic diagram of welding of the battery cell and the adapter in the present invention.

[0023] in:

[0024] 11- positioning strip; 111- positioning slot 1; 112- taking and placing slot 1; 113- limiting opening 1; 114- avoiding opening 1; 115- adsorption hole 1; 116- suction hole 1; 117- convex column 1;

[0025] 12-positioning plate; 121-positioning groove 2; 122-pick-and-place groove 2; 123-adsorption hole 2; 124-intake hole 2; 125-convex column 2;

[0026] 13-inhalation tube 1;

[0027] 14-inhalation tube 2;

[0028] 15- hinged strip; 151- hinged hole; 152- sliding groove;

[0029] 16- Pressing tablet;

[0030] 17- support plate;

[0031] 18-support spring;

[0032] 19-lift and release strip;

[0033] 20-battery cell;

[0034] 21-ear;

[0035] 22- adapter;

[0036] 23-Top cover. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] like Figures 1 to 5 As shown, an ultrasonic welding tool for lithium battery production includes a positioning bar 11, a positioning plate 12, a hinge bar 15, a support plate 17 and a support spring 18, wherein:

[0039] The positioning bar 11 is horizontally arranged, and a rectangular first positioning groove 111 is centrally provided on its upper side. Two pairs of rectangular first limiting openings 113 are symmetrically provided on the left and right sides of the first positioning groove 111. The first limiting openings 113 communicate with the first positioning groove 111. Rectangular first avoiding grooves 114 are symmetrically provided on the front and rear of the bottom of the first positioning groove 111. Uniformly distributed first adsorption holes 115 are centrally provided on the bottom of the first positioning groove 111. A front-to-rear suction hole 116 is provided below the first positioning groove 111. The suction hole 116 communicates with the first adsorption holes 115. Suction pipes 13 are connected to the front and rear ports of the suction hole 116. Two pairs of first convex columns 117 are symmetrically provided on the front and rear sides of the first positioning bar 11, and the two first convex columns 117 on the same side are symmetrically distributed left and right;

[0040] A pair of positioning plates 12 are provided and symmetrically distributed on the left and right sides of the positioning bar 11. A rectangular second positioning groove 121 is provided inwardly on the upper side of the positioning plate 12. Uniformly distributed second adsorption holes 123 are centrally provided on the bottom of the second positioning groove 121. A left-to-right suction hole 124 is provided below the second positioning groove 121. The suction hole 124 communicates with the second adsorption holes 123. A suction pipe 14 is connected to the outer port of the suction hole 124. A pair of second convex columns 125 are symmetrically provided on the front and rear sides of the positioning plate 12;

[0041] Two pairs of hinge bars 15 are provided and symmetrically distributed on the front and rear sides of the positioning bar 11. The two hinge bars 15 on the same side are symmetrically distributed left and right. The hinge bar 15 is of a "﹁" type structure. A circular hinge hole 151 is provided at the inner extending end of the hinge bar 15 and is correspondingly hinged to the first convex column 117. A rectangular sliding groove 152 is provided at the outer extending end of the hinge bar 15 and is correspondingly slidably mounted on the second convex column 125;

[0042] The support plate 17 is of a "凵" type structure and is located directly below the positioning bar 11. The left and right top surfaces of the support plate 17 respectively abut against the bottom surfaces of the left and right positioning plates 12;

[0043] A row of support springs 18 are provided and are connected at equal intervals between the positioning bar 11 and the support plate 17.

[0044] In this embodiment, 1 / 4 cylindrical first picking and placing grooves 112 are symmetrically provided on the front and rear sides of the first positioning groove 111. The first picking and placing grooves 112 communicate with the first positioning groove 111. By providing the first picking and placing grooves 112, it is convenient to place or remove the top cover 23 in the first positioning groove 111.

[0045] In this embodiment, the second positioning groove 121 is symmetrically provided with a 1 / 4 cylindrical access groove 122 on both sides thereof, and the second access groove 122 is connected to the second positioning groove 121. The second access groove 122 can be provided to facilitate placing or removing the battery cell 20 in the second positioning groove 121.

[0046] In this embodiment, a circular pressing piece 16 is horizontally welded to the outer side of the hinge bar 15. The hinge bar 15 can be pressed downward conveniently by adding the pressing piece 16.

[0047] In this embodiment, a “[”-shaped lifting strip 19 is horizontally welded to the outer side of the positioning plate 12. By installing the lifting strip 19, the positioning plate 12 can be easily lifted upward.

[0048] This ultrasonic welding device for lithium battery production is used in practical applications:

[0049] Step 1: Place a top cover 23 pre-installed with a pair of adapter plates 22 horizontally in the positioning groove 111 of the middle positioning strip 11, and then adsorb the top cover 23 under negative pressure at the adsorption hole 115;

[0050] Step 2: Place a battery cell 20 horizontally in each of the two positioning grooves 121 of the positioning plates 12 on both sides, and allow a pair of tabs 21 on the battery cell 20 to pass through a pair of limiting openings 113 and be placed on the upper side of a pair of adapter plates 22, and then adsorb the battery cell 20 through the negative pressure condition at the adsorption hole 123;

[0051] Step 3: Weld the tab 21 on the battery cell 20 to the adapter 22 on the top cover 23 using ultrasonic welding equipment;

[0052] Step 4: Press down the middle positioning strip 11 and the two pairs of front and rear pressing pieces 16 at the same time to drive the positioning strip 11 and the hinge strip 15 to move vertically downward. Since the battery cell 20 and the top cover 23 are both adsorbed, the tab 21 will be bent downward by 90 degrees and the adapter 22 will be bent upward by 90 degrees, completing the initial bending work;

[0053] Step 5: Pause the negative pressure condition at the second adsorption hole 123, and then manually lift the left and right lifting bars 19 upward at the same time to drive the two positioning plates 12 to flip upward until the two battery cells 20 are vertically against each other to complete the final bending work, and then release the left and right lifting bars 19 downward to drive the two positioning plates 12 to flip downward and return to the initial horizontal state;

[0054] Step 6: Suspend the negative pressure condition at the adsorption hole 115, and then remove the battery cell 20 welded to the top cover 23.

[0055] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An ultrasonic welding tool for lithium battery production, characterized in that: It includes a positioning bar (11), a positioning plate (12), a hinge bar (15), a support plate (17) and a support spring (18), where: The positioning bar (11) is horizontally arranged, and a rectangular first positioning groove (111) is centrally provided on its upper side. Two pairs of rectangular first limiting openings (113) are symmetrically arranged on the left and right sides of the first positioning groove (111). The first limiting openings (113) communicate with the first positioning groove (111). Rectangular first avoidance grooves (114) are symmetrically arranged at the front and back of the bottom of the first positioning groove (111). Uniformly distributed first adsorption holes (115) are centrally provided at the bottom of the first positioning groove (111). A front and rear facing first suction hole (116) is provided below the first positioning groove (111). The first suction hole (116) communicates with the first adsorption holes (115). Suction pipes one (13) are connected to the front and rear ports of the first suction hole (116). Two pairs of first convex columns (117) are symmetrically arranged on the front and rear sides of the positioning bar (11). The two first convex columns (117) on the same side are symmetrically distributed left and right; There are a pair of positioning plates (12), which are symmetrically distributed on the left and right sides of the positioning bar (11). A rectangular second positioning groove (121) is provided inwardly on the upper side of the positioning plate (12). Uniformly distributed second adsorption holes (123) are centrally provided at the bottom of the second positioning groove (121). A left and right facing second suction hole (124) is provided below the second positioning groove (121). The second suction hole (124) communicates with the second adsorption holes (123). A suction pipe two (14) is connected to the outer port of the second suction hole (124). A pair of second convex columns (125) are symmetrically arranged on the front and rear sides of the positioning plate (12); There are two pairs of hinge bars (15), which are symmetrically distributed on the front and rear sides of the positioning bar (11). The two positioning bars (11) on the same side are symmetrically distributed left and right. The hinge bar (15) is of a "﹁” type structure. A circular hinge hole (151) is provided at the inner extending end of the hinge bar (15) and is correspondingly hinged on the first convex column (117). A rectangular sliding groove (152) is provided at the outer extending end of the hinge bar (15) and is correspondingly slidably mounted on the second convex column (125); The support plate (17) is of a "凵” type structure and is located directly below the positioning bar (11). The left and right top surfaces of the support plate (17) respectively abut against the bottom surfaces of the left and right positioning plates (12); There is a row of support springs (18), which are connected at equal intervals between the positioning bar (11) and the support plate (17); A circular pressing piece (16) is horizontally welded on the outer side of the hinge bar (15); A "[” type lifting and placing bar (19) is horizontally welded on the outer side of the positioning plate (12).

2. The ultrasonic welding tool for lithium battery production according to claim 1, characterized in that: Quarter-cylindrical picking and placing grooves one (112) are symmetrically arranged on the front and back sides of the first positioning groove (111). The picking and placing grooves one (112) communicate with the first positioning groove (111).

3. The ultrasonic welding tool for lithium battery production according to claim 1, characterized in that: A 1 / 4 cylindrical pick-and-place groove 2 (122) is symmetrically arranged on the front and rear sides of the second positioning groove (121), and the second pick-and-place groove (122) is connected to the second positioning groove (121).

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