CN219113283U - A square shell cell top cover welding device - Google Patents

Abstract

The utility model provides a welding device for a top cover of a square shell battery cell, which comprises a bottom plate, upright posts, a pre-positioning mechanism, a pressing mechanism and an adjusting mechanism, wherein a plurality of upright posts are fixedly arranged on the upper side of the bottom plate; the adjusting mechanism can meet the compression requirement of the battery cell top cover, so that the welding qualification rate of the battery cell top cover is improved, the third clamp, the adjusting plate, the third pressing plate, the fastening screw and the adjusting screw are mutually matched in the adjusting mechanism, the position of the third pressing plate is quickly adjusted, the compression requirement of the battery cell top cover is met, the occupied space is small, the operation is simple, and the battery cell top cover can be quickly compressed and positioned.

Description

A square shell cell top cover welding device

technical field

The utility model belongs to the field of power battery pack production, in particular to a welding device for the top cover of a square shell electric core.

Background technique

The existing research and development scheme of the power line is to position the square shell cell, and use the combination of screw knob and linear slide rail to compress the shell at the welding place in the long side and short side direction, and then use the same form to press the top cover , and then weld the periphery of the top cover; in the prior art, due to the combination of the screw rod and the linear slide rail, the casing is pressed tightly, which takes up a large space, and the characteristics of many power line changes for research and development lead to high cost of change. At the same time, due to manual Rotating the knob, it is difficult to ensure that the pressing force on each welding shell is consistent, resulting in a lower welding pass rate. The utility model is a welding device for the top cover of a square shell cell. Carry out pressing and positioning to realize fast pressing and positioning.

Contents of the invention

In view of this, the utility model aims to propose a welding device for the top cover of the square shell cell to solve the problems of high cost of remodeling in the prior art, large space occupation, and low welding efficiency and qualified rate caused by unavoidable manual operation factors. Low.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A welding device for the top cover of a square shell cell, comprising a bottom plate, a column, a pre-positioning mechanism, a pressing mechanism and an adjustment mechanism, a number of columns are fixedly installed on the upper side of the bottom plate, a pre-positioning mechanism is fixedly installed on the top of each column, and the pressing mechanism includes positive The pressure assembly and the side pressure assembly, the positive pressure assembly is fixedly installed on the top of the pre-positioning mechanism, the side pressure assembly is fixedly installed on the first side of the pre-positioning mechanism, and the adjustment mechanism is fixedly installed on the second side of the pre-positioning mechanism.

Further, the pre-positioning mechanism includes a lower support plate, an upper support plate, a rear vertical plate and a side vertical plate, the lower support plate is fixedly installed on the top of the column, and the rear vertical plate and the side vertical plate are fixedly installed on the adjacent side of the lower support plate On the top, the upper support plate is fixedly installed on the rear vertical plate.

Further, the positive pressure assembly includes a first clamp, a spacer, a guide shaft, a linear bearing, a cylindrical spring and a first pressure plate, the periphery of the first clamp is fixed to the top of the upper support plate through the spacer, and the two sides of the upper support plate There are two through holes on the side, and a linear bearing is installed in each through hole. Each linear bearing is located on the periphery of a guide shaft, and a cylindrical spring is arranged on the periphery of each guide shaft. The two ends of the cylindrical spring are respectively fixedly connected to the linear bearing. The upper end of the guide shaft, the upper end of the guide shaft, and the lower end of the guide shaft are fixedly installed on the first pressure plate, and one end of the first clamp passes through the upper support plate and abuts against the upper end of the first pressure plate.

Further, the first clamp includes a pull rod, a pressure rod, a first connecting piece, a second connecting piece, a hollow bolt and a limit bolt, one end of the first connecting piece is fixedly connected to the pull rod, and the other end is hinged to the periphery of the top end of the pressure rod, The bottom end of the pressure rod is threaded to the limit bolt, and the bottom end of the limit bolt can be abutted against the first pressure plate. One end of the second connecting piece is fixedly connected to the first connecting piece, and the other end is hinged on the periphery of the hollow bolt. The hollow bolt is threaded. To the spacer, the spacer is fixedly connected to the top of the upper support plate, and the middle of the upper support plate and the spacer are provided with through holes, and the pressure rod can slide axially in the hollow bolt.

Further, the lateral pressure assembly includes a second clamp, a second pressure plate and a clamp seat, the clamp seat is fixedly mounted on the bottom of the lower support plate, one end of the second clamp is fixedly mounted on the clamp seat, and the second pressure plate It is fixedly installed to the other end of the second clamp, and the second clamp is an opening and closing structure of the battery core and the second pressure plate.

Further, the adjustment mechanism includes a third clamp, an adjustment plate, a fastening screw, an adjustment screw, a third pressure plate and a clamp pad, one end of the third clamp is fixedly connected to the bottom of the support plate, and the bottom of the lower support plate is connected to the bottom of the support plate. Clamp pads are arranged between the third clamps, and the adjustment plate is fixedly installed on the other end of the third clamp, and the third pressure plate is detachably connected to the adjustment plate through fastening screws, and the adjustment plate is provided with adjustment screw holes, and the adjustment The screw is threaded into the adjusting screw hole, and one end of the adjusting screw abuts against one side of the third pressing plate.

Compared with the prior art, the welding device for the top cover of the square shell cell described in the utility model has the following advantages: the bottom plate and the column play a supporting and stable role for the upper pre-positioning mechanism, pressing mechanism and adjusting mechanism, The pre-positioning mechanism can pre-position the cell, and the compression mechanism can press and fix the pre-positioned cell. The adjustment mechanism can meet the compression requirements of the cell top cover, so that the welding pass rate of the cell top cover can be improved. In the mechanism, the third clamp, the adjustment plate, the third pressure plate, the fastening screw and the adjustment screw cooperate with each other to realize the rapid adjustment of the position of the third pressure plate, so as to meet the pressing demand of the cell top cover, and it takes up little space and is easy to operate , the top cover of the cell can be pressed and positioned quickly.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a schematic structural view of a welding device for a square shell cell top cover described in an embodiment of the present invention;

Fig. 2 is a schematic structural view of the lateral pressure assembly and the pre-positioning mechanism described in the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of the positive pressure assembly described in the embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the first clamp according to the embodiment of the present invention;

Fig. 5 is a structural schematic diagram of the adjustment mechanism described in the embodiment of the present invention;

Fig. 6 is a schematic structural diagram of the third clamp according to the embodiment of the present invention.

Explanation of reference signs:

1-bottom plate; 2-column; 3-pre-positioning mechanism; 31-lower support plate; 32-upper support plate; 33-rear vertical plate; 34-side vertical plate; 4-pressing mechanism; 41-positive pressure component; 411-first clamp; 4111-pull rod; 4112-pressure rod; 4113-first connector; 4114-second connector; 4115-hollow bolt; 4116-limit bolt; , 414-linear bearing, 415-cylindrical spring; 416-first pressure plate; 42-side pressure assembly; 421-second clamp; 422-second pressure plate; 423-clamp seat; Three clamps; 511-handle; 512-fixed part; 513-movable part; 52-adjusting plate; 53-fastening screw; 54-adjusting screw;

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In describing the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention. Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention through specific situations.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figure 1-6, a welding device for the top cover of a square shell cell includes a bottom plate 1, a column 2, a pre-positioning mechanism 3, a pressing mechanism 4 and an adjustment mechanism 5, and several columns 2 are fixedly installed on the upper side of the bottom plate 1, The pre-positioning mechanism 3 is fixedly installed on the top of each column 2, and the pressing mechanism 4 includes a positive pressure assembly 41 and a side pressure assembly 42. The positive pressure assembly 41 is fixedly installed on the top of the pre-positioning mechanism 3, and the side pressure assembly 42 is fixedly installed on the pre-positioning mechanism. On the first side of 3, the adjustment mechanism 5 is fixedly installed on the second side of the pre-positioning mechanism 3, and the bottom plate 1 and the column 2 play a role of support and stability for the upper pre-positioning mechanism 3, pressing mechanism 4 and adjustment mechanism 5, The pre-positioning mechanism 3 can pre-position the cell, the compression mechanism 4 can press and fix the pre-positioned cell, and the adjustment mechanism 5 can meet the compression requirements of the cell top cover, so that the welding pass rate of the cell top cover promote.

The pre-positioning mechanism 3 includes a lower support plate 31, an upper support plate 32, a rear vertical plate 33 and a side vertical plate 34. The lower support plate 31 is fixedly installed on the top of the column 2, and the rear vertical plate 33 and the side vertical plate 34 are fixedly installed on the lower vertical plate respectively. On the adjacent side of the support plate 31, the upper support plate 32 is fixedly installed on the rear vertical plate 33, the rear vertical plate 33 plays a role in positioning the rear end surface of the cell, and the side vertical plate 34 plays a role in positioning the side of the cell .

The positive pressure assembly 41 includes a first clamp 411 , a spacer 412 , a guide shaft 413 , a linear bearing 414 , a cylindrical spring 415 and a first pressure plate 416 , and the periphery of the first clamp 411 is fixed to the top of the upper support plate 32 through the spacer 412 , two through holes are provided on both sides of the upper support plate 32, a linear bearing 414 is installed in each through hole, each linear bearing 414 is located on the periphery of a guide shaft 413, and a cylindrical spring 415 is arranged on the periphery of each guide shaft 413, The two ends of the cylindrical spring 415 are fixedly connected to the upper end of the linear bearing 414 and the upper end of the guide shaft 413 respectively, and the lower end of the guide shaft 413 is fixedly installed on the first pressure plate 416, and one end of the first clamp 411 passes through the upper support plate 32 Butted against the upper end of the first pressure plate 416, the guide shaft 413, the linear bearing 414 and the cylindrical spring 415 are used together. When the first clamp 411 is withdrawn, the first pressure plate 416 is pulled back through the linkage of the guide shaft 413, which is convenient for the cell Loading and unloading.

The first clamp 411 includes a pull rod 4111, a pressure rod 4112, a first connecting piece 4113, a second connecting piece 4114, a hollow bolt 4115 and a limit bolt 4116. One end of the first connecting piece 4113 is fixedly connected to the pull rod 4111, and the other end is connected to the pressure rod. The top of 4112 is hinged, the bottom of pressure rod 4112 is threaded to limit bolt 4116, the bottom of limit bolt 4116 can abut against the first pressure plate 416, one end of second connecting piece 4114 is fixedly connected to first connecting piece 4113, and the other end is hinged On the periphery of the hollow bolt 4115, the hollow bolt 4115 is threadedly connected to the spacer 412, the spacer 412 is fixedly connected to the top of the upper support plate 32, and the middle of the upper support plate 32 and the spacer 412 are provided with through holes, and the pressure rod 4112 can Slide in the hollow bolt 4115 in the axial direction, press the pull rod 4111, the pressure rod 4112 moves downward in the axial direction, the pressure rod 4112 touches the first pressure plate 416, drives the first pressure plate 416 to move downward, and drives the fixedly installed The guide shaft 413 on a pressure plate 416 moves downward in the axial direction. At this time, the cylindrical spring 415 around the guide shaft 413 is in a compressed state. After the pull rod 4111 is withdrawn, the cylindrical spring 415 recovers and elongates in conjunction with the guide shaft 413, and the first pressure plate 416 and depression bar 4112 are withdrawn.

The lateral pressure assembly 42 includes a second clamp 421, a second pressure plate 422 and a clamp seat 423, the clamp seat 423 is fixedly mounted on the bottom of the lower support plate 31, and one end of the second clamp 421 is fixedly mounted on the clamp seat 423, The second pressing plate 422 is fixedly installed on the other end of the second clamp 421 , the second clamp 421 is an opening and closing structure of the battery cell and the second pressing plate 422 , and the side pressing assembly 42 plays a role of side pressing and positioning the battery cell.

The adjustment mechanism 5 includes a third clamp 51, an adjustment plate 52, a fastening screw 53, an adjustment screw 54, a third pressing plate 55 and a clamp pad 56, one end of the third clamp 51 is fixedly connected to the bottom of the lower support plate 31, and A clamp pad 56 is arranged between the bottom of the lower support plate 31 and the third clamp 51 , the adjustment plate 52 is fixedly mounted to the other end of the third clamp 51 , and the third pressure plate 55 is detachably connected to the adjustment plate 52 by fastening screws 53 and the adjustment plate 52 is provided with an adjustment screw hole, the adjustment screw 54 is screwed into the adjustment screw hole, and one end of the adjustment screw 54 abuts against one side of the third pressure plate 55, the third clamp 51 is due to its own structure Features, there is a certain tolerance of the pressing position during use. By adjusting and rotating the adjusting screw 54, the third pressing plate 55 can be pushed out by different distances. On the premise of meeting the pressing requirements of the third pressing plate 55 on the cell top cover, tighten Four fastening screws 53 fix the third pressing plate 55, which can realize quick adjustment.

Both the second clamp 421 and the third clamp 51 are prior art, the second clamp 421 and the third clamp 51 may have the same structure, and the third clamp 51 includes a handle 511, a fixed part 512, and a movable part 513 , the fixed part 512 and the movable part 513 are respectively hinged to the handle 511, the fixed part 512 is fixedly installed on the clamp pad 56, the third pressure plate 55 is fixedly installed on the movable part 513, and the handle 511 is used to control the position of the movable part 513.

The working process of a welding device for the top cover of a square shell cell:

The worker puts the welding cell into the pre-positioning mechanism 3 for pre-positioning, and pulls the first clamp 411 and the second clamp 421 respectively. At this time, the pressing mechanism 4 will compress and fix the cell, and then pull the third clamp. Machine clamp 51, turn the adjusting screw 54, and adjust the third pressure plate 55 to a proper position, thereby adjusting the position of the cell top cover, and finally tighten the fastening screw 53, and fix the third pressure plate 55, so as to adjust the cell top cover. The cover is fixed, and then the laser is used to spot-weld six places evenly distributed around the top cover of the cell. After completion, the third clamp 51 is withdrawn, and then the periphery of the top cover of the cell is fully welded. After the welding is completed, the first clamp is withdrawn. 411 and the second clamp 421, for blanking the cell.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. A welding device for a top cover of a square shell cell is characterized in that: including bottom plate (1), stand (2), advance positioning mechanism (3), hold-down mechanism (4) and adjustment mechanism (5), a plurality of stands (2) of bottom plate (1) upside fixed mounting, every stand (2) top fixed mounting advance positioning mechanism (3), hold-down mechanism (4) include malleation subassembly (41) and side pressure subassembly (42), malleation subassembly (41) fixed mounting is in advance positioning mechanism (3) top, side pressure subassembly (42) fixed mounting is in advance positioning mechanism (3) first side, adjustment mechanism (5) fixed mounting is in advance positioning mechanism (3) second side.

2. The square-shell cell top cover welding device according to claim 1, wherein: the pre-positioning mechanism (3) comprises a lower support plate (31), an upper support plate (32), a rear vertical plate (33) and a side vertical plate (34), wherein the lower support plate (31) is fixedly arranged at the top end of the upright post (2), the rear vertical plate (33) and the side vertical plate (34) are respectively fixedly arranged on the adjacent side edges of the lower support plate (31), and the upper support plate (32) is fixedly arranged on the rear vertical plate (33).

3. The square-shell cell top cover welding device according to claim 1, wherein: the positive pressure assembly (41) comprises a first clamp (411), a cushion block (412), a guide shaft (413), linear bearings (414), a cylindrical spring (415) and a first pressing plate (416), wherein the periphery of the first clamp (411) is fixedly mounted on the top of an upper support plate (32) through the cushion block (412), two through holes are formed in two sides of the upper support plate (32), one linear bearing (414) is mounted in each through hole, each linear bearing (414) is located on the periphery of one guide shaft (413), the periphery of each guide shaft (413) is provided with one cylindrical spring (415), two ends of each cylindrical spring (415) are fixedly connected to the upper ends of the linear bearings (414) and the upper end of the guide shaft (413) respectively, the lower end of the guide shaft (413) is fixedly mounted on the first pressing plate (416), and one end of the first clamp (411) is abutted to the upper end of the first pressing plate (416) after passing through the upper support plate (32).

4. A square-shell cell top cover welding device according to claim 3, wherein: the first clamp (411) comprises a pull rod (4111), a compression rod (4112), a first connecting piece (4113), a second connecting piece (4114), a hollow bolt (4115) and a limit bolt (4116), wherein one end of the first connecting piece (4113) is fixedly connected with the pull rod (4111), the other end of the first connecting piece is hinged to the periphery of the top end of the compression rod (4112), the limit bolt (4116) is in threaded connection with the bottom end of the compression rod (4112), the bottom end of the limit bolt (4116) can be abutted to the first pressure plate (416), one end of the second connecting piece (4114) is fixedly connected with the first connecting piece (4113), the other end of the second connecting piece is hinged to the periphery of the hollow bolt (4115), the hollow bolt (4115) is in threaded connection with the cushion block (412), the cushion block (412) is fixedly connected to the top of the upper support plate (32), and through holes are formed in the middle of the upper support plate (32) and in the cushion block (412), and the compression rod (4112) can slide axially in the hollow bolt (4115).

5. The square-shell cell top cover welding device according to claim 1, wherein: the side pressure assembly (42) comprises a second clamp (421), a second pressing plate (422) and a clamp seat (423), the clamp seat (423) is fixedly mounted on the bottom of the lower support plate (31), one end of the second clamp (421) is fixedly mounted on the clamp seat (423), the second pressing plate (422) is fixedly mounted on the other end of the second clamp (421), and the second clamp (421) is an opening and closing structure of the battery cell and the second pressing plate (422).

6. The square-shell cell top cover welding device according to claim 1, wherein: the adjusting mechanism (5) comprises a third clamp (51), an adjusting plate (52), a fastening screw (53), an adjusting screw (54), a third pressing plate (55) and a clamp pad (56), one end of the third clamp (51) is fixedly connected to the bottom of the lower support plate (31), the clamp pad (56) is arranged between the bottom of the lower support plate (31) and the third clamp (51), the adjusting plate (52) is fixedly mounted to the other end of the third clamp (51), the third pressing plate (55) is detachably connected to the adjusting plate (52) through the fastening screw (53), an adjusting screw hole is formed in the adjusting plate (52), the adjusting screw (54) is connected into the adjusting screw hole in a threaded mode, and one end of the adjusting screw (54) is abutted to one side of the third pressing plate (55).

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