Battery pack welding jig

Abstract

The utility model provides a battery pack welding jig which is used for welding battery packs and a connecting piece set, the connecting piece set is provided with a first connecting piece and a second connecting piece, a positioning seat of the battery pack welding jig is provided with a containing groove, a first side and a second side, the battery packs are arranged in the containing groove side by side, and the first ends of the battery packs are located on the first side of the positioning seat. The second end of the battery pack is positioned on the second side of the positioning seat; the left cover plate is pivoted to the first side, the left cover plate is provided with a first welding surface, the right cover plate is pivoted to the second side, the right cover plate is provided with a second welding surface, and the upper cover plate detachably covers the accommodating groove of the positioning seat; the first connecting sheet is arranged on the first welding surface, and the second connecting sheet is arranged on the second welding surface; the left cover plate is rotated to the first side so that the first connecting piece on the first welding face abuts against the first end of the battery pack, the right cover plate is selected to the second side so that the second connecting piece on the second welding face abuts against the second end of the battery pack, and the upper cover plate covers the containing groove and the battery pack.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery pack welding jig, especially to a battery pack turnover jig for welding at both ends. BACKGROUND

[0002] Generally, the battery pack welding is to put the battery pack into the jig base with single opening, and then the connecting sheet is placed manually by the staff, and the resistance welding is used for connection. After the staff welds one end of the battery pack, the battery pack is taken out, turned over and then put into the jig base for welding the other end of the battery pack. Thus, the staff needs to manually turn over the battery pack to complete the welding of the positive and negative poles, which is low in efficiency.

[0003] Therefore, it is necessary to design a new battery pack welding jig to overcome the above defects. SUMMARY

[0004] The utility model discloses a battery pack welding jig which can realize the welding of both ends of the battery pack to the connecting sheet by the double opening cover plate and the connecting sheet arranged on the double opening cover plate.

[0005] To achieve the above purpose, the utility model provides a battery pack welding jig for welding the battery pack and the connecting sheet group, the connecting sheet group has a first connecting sheet and a second connecting sheet, the battery pack welding jig comprises: a positioning seat with a containing groove, a first side and a second side, the first side is opposite to the second side, the battery pack is placed side by side in the containing groove so that the battery pack has opposite first end and second end, the first end is located at the first side, and the second end is located at the second side; a left cover plate is pivoted to the first side, and the left cover plate has a first welding surface; a right cover plate is pivoted to the second side, and the right cover plate has a second welding surface; and an upper cover plate detachably covers the containing groove; wherein the first connecting sheet is arranged on the first welding surface, the second connecting sheet is arranged on the second welding surface, when the battery pack is welded to the connecting sheet group, the first connecting sheet on the first welding surface is selected to abut against the first end by rotating the left cover plate to the first side, and the second connecting sheet on the second welding surface is selected to abut against the second end by rotating the right cover plate to the second side, and the upper cover plate covers the containing groove and the battery pack.

[0006] Preferably, it further comprises a first suction accessory and a second suction accessory, the first suction accessory is arranged on the first welding surface of the left cover plate to adsorb the first connecting sheet, and the second suction accessory is arranged on the second welding surface of the right cover plate to adsorb the second connecting sheet.

[0007] Preferably, it further comprises a first positioning pin and a second positioning pin, the first positioning pin is arranged on the first suction accessory to limit the first connecting sheet, and the second positioning pin is arranged on the second suction accessory to limit the second connecting sheet.

[0008] Preferably, the first suction member is embedded in the left cover plate, the first positioning pin is protruded from the first welding surface, the first connecting piece has a first positioning hole, when the first connecting piece is arranged on the left cover plate, the first positioning pin passes through the first positioning hole and the first suction member suctions the first connecting piece; the second suction member is embedded in the right cover plate, the second positioning pin is protruded from the second welding surface, the second connecting piece has a second positioning hole, when the second connecting piece is arranged on the right cover plate, the second positioning pin passes through the second positioning hole and the second suction member suctions the second connecting piece.

[0009] Preferably, the first connecting piece has at least one connecting piece, the first positioning pin has at least one positioning pin, the at least one connecting piece is arranged on the at least one positioning pin and the first suction member suctions the at least one connecting piece.

[0010] Preferably, the first suction member has at least one suction member, the at least one suction member is arranged on the left cover plate, the first connecting piece has at least one connecting piece, the at least one suction member suctions the at least one connecting piece.

[0011] Preferably, the battery pack has a plurality of positive poles and a plurality of negative poles, the plurality of negative poles are distributed at intervals at the first end, the plurality of positive poles are distributed at intervals at the first end, the first connecting piece has at least one connecting piece, the at least one connecting piece connects one of the adjacent two of the plurality of positive poles and one of the plurality of negative poles and does not overlap.

[0012] Preferably, the second connecting piece has at least one connecting piece, the at least one connecting piece and the at least one connecting piece connect a plurality of batteries of the battery pack.

[0013] Preferably, further comprising a limiting part, the positioning seat further has a third side and a fourth side opposite to each other, the limiting part is arranged on the third side and / or the fourth side, the upper cover plate cooperates with the limiting part to connect the upper cover plate and the positioning seat.

[0014] Preferably, the limiting part comprises a suction part and a first clamping part, the upper cover plate has a second clamping part, the first clamping part cooperates with the second clamping part to cover the accommodating groove with the upper cover plate, the suction part suctions the upper cover plate to fix the upper cover plate to cover the accommodating groove.

[0015] Compared with the prior art, the battery pack welding fixture provided by this utility model is used to weld battery packs to connecting piece groups. The connecting piece group has a first connecting piece and a second connecting piece. The battery pack welding fixture includes a positioning seat, a left cover plate, a right cover plate, and a top cover plate. The positioning seat has a receiving groove, a first side, and a second side, which are opposite to each other. The battery packs are placed side by side into the receiving groove so that the battery packs have opposite first and second ends. The first end of the battery pack is located on the first side of the positioning seat, and the second end of the battery pack is located on the second side of the positioning seat. The left cover plate is pivotally connected to the first side of the positioning seat and has a first welding surface. The right cover plate is pivotally connected to the first side of the positioning seat. On the second side of the positioning seat, the right cover plate has a second welding surface, and the upper cover plate detachably covers the receiving groove of the positioning seat; wherein, the first connecting piece is disposed on the first welding surface, and the second connecting piece is disposed on the second welding surface. When the battery pack is welded to the connecting piece assembly, the left cover plate is rotated to the first side so that the first connecting piece on the first welding surface abuts against the first end of the battery pack, and the right cover plate is rotated to the second side so that the second connecting piece on the second welding surface abuts against the second end of the battery pack. The upper cover plate covers the receiving groove of the positioning seat and the battery pack. In this way, the two ends of the battery pack can be welded to the connecting pieces simultaneously by means of the double-opening cover plate and the connecting pieces disposed on the double-opening cover plate. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of a battery pack welding fixture according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the battery pack welding fixture assembled according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram from another perspective of the battery pack welding fixture according to an embodiment of the present invention. Detailed Implementation

[0020] To provide a better understanding of the purpose, structure, features and functions of this utility model, detailed descriptions are provided below with reference to the embodiments.

[0021] Reference Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of a battery pack welding fixture according to an embodiment of the present invention. Figure 2The utility model discloses an embodiment of battery pack welding jig combines the schematic diagram. The utility model embodiment provides a kind of battery pack welding jig 100, to be welded with connecting sheet group 102 to battery pack 101, connecting sheet group 102 has first connecting sheet 1021 and second connecting sheet 1022, battery pack welding jig 100 includes positioning seat 11, left cover plate 12, right cover plate 13 and upper cover plate 14, positioning seat 11 has accommodating groove 111, first side 112 and second side 113, first side 112 and second side 113 are opposite, battery pack 101 is placed into accommodating groove 111 side by side to make battery pack 101 have opposite first end 1011 and second end 1012, the first end 1011 of battery pack 101 is located in the first side 112 of positioning seat 11, the second end 1012 of battery pack 101 is located in the second side 113 of positioning seat 11;Left cover plate 12 is pivoted in the first side 112 of positioning seat 11, and left cover plate 12 has first welding surface 121, right cover plate 13 is pivoted in the second side 113 of positioning seat 11, and right cover plate 13 has second welding surface 131, and upper cover plate 14 detachably covers accommodating groove 111 of positioning seat 11;Wherein, first connecting sheet 1021 is arranged on first welding surface 121, and second connecting sheet 1022 is arranged on second welding surface 131, when battery pack 101 is welded with connecting sheet group 102, rotate left cover plate 12 to the first side 112 of positioning seat 11 to make first connecting sheet 10121 on first welding surface 121 abut battery pack 101's first end 1011 and rotate right cover plate 13 to the second side 113 of positioning seat 11 to make second connecting sheet 1022 on second welding surface 131 abut battery pack 101's second end 1012, and upper cover plate 14 covers accommodating groove 111 of positioning seat 11 and battery pack 101, thus, can be welded with connecting sheet by double open cover plate and double open cover plate on setting up connecting sheet to realize battery pack both ends.

[0022] Referring to Figure 1 and Figure 2As shown, the battery pack 101 has at least two batteries, the at least two batteries are placed side by side in the positioning seat 11, the battery pack 101 has opposite positive poles and negative poles, the negative poles are distributed at intervals at the first end 1011 of the battery pack 101, and the positive poles are distributed at intervals at the second end 1012 of the battery pack 101. The battery pack 101 is combined as a power supply, and the battery pack welding jig 100 can be used for welding the battery pack 101 of the notebook power supply. The battery pack welding jig 100 can also be used for welding the battery pack 101 of other electronic products, without being limited thereto. In a better implementation, the first connecting piece 1021 has at least one connecting piece, and the at least one connecting piece connects one of the adjacent positive poles and one of the negative poles without overlapping. Further, the second connecting piece 1022 has at least one connecting piece, and the at least one connecting piece connects the plurality of batteries of the battery pack 101. In a specific implementation, the connecting piece group 102 is used to connect the electrodes of the battery pack 101, and the batteries of the battery pack 101 are connected in parallel / series, depending on actual needs. One of the connecting pieces of the first connecting piece 1021 connects the adjacent positive pole and negative pole, and one of the connecting pieces of the second connecting piece 1022 connects the adjacent negative pole and positive pole, so as to realize the connection of all the batteries.

[0023] Referring to Figure 1 and Figure 2 As shown, the positioning seat 11 has a containing groove 111, a first side 112, a second side 113, a third side 114, and a fourth side 115. The first side 112 is opposite to the second side 113, and the third side 114 is opposite to the fourth side 115. The first side 112, the second side 113, the third side 114, and the fourth side 115 are located at four sides of the containing groove 11, respectively. The containing groove 111 of the positioning seat 11 is used for containing the battery pack 101. The first side 112 of the positioning seat 11 is pivotally connected with the left cover plate 12, the second side 113 of the positioning seat 11 is pivotally connected with the right cover plate 13, and the containing groove 111 of the positioning seat 11 is covered by the upper cover plate 14. The containing groove 111 can be one for containing the battery pack 111 for welding, or two for containing two battery packs 111 for welding to improve the welding efficiency, depending on actual needs, without being limited thereto.

[0024] Referring to Figure 1 and Figure 2As shown in FIG. 1, the left cover plate 12 is arranged on the first side 112 of the positioning seat 11, the left cover plate 12 is in a plate shape, the left cover plate 12 has a first welding surface 121, and the first welding surface 121 is provided with the first connecting sheet 1021. In a preferred embodiment, the battery pack welding jig 100 further comprises a first suction accessory 151, and the first suction accessory 151 is arranged on the first welding surface 121 of the left cover plate 12 to adsorb the first connecting sheet 1021. In a specific implementation, the battery pack welding jig 100 further comprises a first positioning pin 161, and the first positioning pin 161 is arranged on the first suction accessory 151 to limit the first connecting sheet 1021. The first suction accessory 151 is embedded in the first welding surface 121 of the left cover plate 12, the first suction accessory 151 cooperates with the first positioning pin 161 to fix the first connecting sheet 1021, realizes the fast and accurate positioning of the first connecting sheet 1021 to the first positioning pin 161, and the position remains fixed, which is beneficial to the welding of the first connecting sheet 1021 and the first end 1011 of the battery pack 101. One end of the left cover plate 12 exceeds the fourth side 115 of the positioning seat 11 to facilitate the opening and closing of the left cover plate 12 during the operation of the personnel and is used to distinguish the left and right cover plates.

[0025] Referring to Figure 1 and Figure 2 As shown in FIG. 1, the right cover plate 13 is arranged on the second side 113 of the positioning seat 11, the right cover plate 13 is in a plate shape, the right cover plate 13 has a second welding surface 131, and the second welding surface 131 is provided with the second connecting sheet 1022. In a preferred embodiment, the battery pack welding jig 100 further comprises a second suction accessory 152, and the second suction accessory 152 is arranged on the second welding surface 131 of the right cover plate 13 to adsorb the second connecting sheet 1022. In a specific implementation, the battery pack welding jig 100 further comprises a second positioning pin, and the second positioning pin is arranged on the second suction accessory 152 to limit the second connecting sheet 1022. The second suction accessory 152 is embedded in the second welding surface 131 of the right cover plate 13, the second suction accessory 152 cooperates with the second positioning pin to fix the second connecting sheet 1022, realizes the fast and accurate positioning of the second connecting sheet 1022 to the second positioning pin, and the position remains fixed, which is beneficial to the welding of the second connecting sheet 1022 and the second end 1012 of the battery pack 101.

[0026] Referring to Figure 1 and Figure 2As shown, the upper cover plate 14 has a second clamping portion (not shown in the figure), which can be one of a convex portion or a concave portion, and the second clamping portion cooperates with the positioning seat 11 to fix the upper cover plate 14 above the positioning seat 11. In a preferred embodiment, the battery welding jig 100 further comprises a limiting portion arranged on the third side 114 and / or the fourth side 115 of the positioning seat 11, and the upper cover plate 14 cooperates with the limiting portion to connect the upper cover plate 14 and the positioning seat 11. One of the convex portion or the concave portion of the upper cover plate 14 cooperates with the limiting portion on the positioning seat 11 to fix the upper cover plate 14 above the positioning seat 11. In a specific implementation, the limiting portion comprises a suction portion 171 and a first clamping portion 172, the first clamping portion 172 cooperates with the second clamping portion of the upper cover plate 14 to cover the accommodating groove 111 of the positioning seat 11, and the suction portion 171 suctions the upper cover plate 14 to fix the upper cover plate 14 to cover the accommodating groove 111. In this way, the other one of the convex portion or the concave portion of the upper cover plate 14 is fixed and limited by the convex portion or the concave portion on the third side 114 or the fourth side 115 of the positioning seat 11, and the suction portion 171 on the third side 114 or the fourth side 115 of the positioning seat 11 suctions and fixes the upper cover plate 14.

[0027] Referring to Figure 3 As shown, Figure 3 It is another perspective view of the battery welding jig according to an embodiment of the present application. The other side of the positioning seat 11 relative to the accommodating groove 111 has at least two base holes 116. The battery welding jig is placed on a conveying belt, and the at least two base holes 116 are fixed on the conveying belt to ensure that the battery 101 is fixed and avoids displacement when both ends of the battery 101 are welded at the same time.

[0028] In the embodiment of the present application, the first positioning pin 161 is protruded on the first welding surface 121 of the left cover plate 12, the first connecting piece 1021 has a first positioning hole 10211, when the first connecting piece 1021 is arranged on the left cover plate 12, the first positioning pin 161 is arranged through the first positioning hole 10211 and the first suction member 151 suctions the first connecting piece 1021; the second positioning pin is protruded on the second welding surface 131 of the right cover plate 13, the second connecting piece 1022 has a second positioning hole 12221, when the second connecting piece 1021 is arranged on the right cover plate 13, the second positioning pin is arranged through the second positioning hole and the second suction member 152 suctions the second connecting piece 1022. In this way, the connecting pieces are suctioned and fixed on the welding surfaces of the left and right cover plates to realize the one-to-one correspondence between the connecting pieces and the two poles of the battery 101, and the connecting pieces are simultaneously and accurately welded.

[0029] In the embodiment of the utility model, the first suction accessory 151 has at least one suction accessory, the at least one suction accessory is arranged on the first welding surface 121 of the left cover plate 12, the first connecting piece 1021 has at least one connecting piece, and the at least one suction accessory of the first suction accessory 151 sucks the at least one connecting piece. The second suction accessory 152 has at least one suction accessory, the at least one suction accessory is arranged on the second welding surface 131 of the right cover plate 13, the second connecting piece 1022 has at least one connecting piece, and the at least one suction accessory of the second suction accessory 152 sucks the at least one connecting piece. In this way, each suction accessory not only has a suction function on the connecting piece / connecting piece, but also can quickly position the connecting piece / connecting piece close to the suction accessory to the positioning pin.

[0030] In the embodiment of the utility model, the first positioning pin 161 has at least one positioning pin, the at least one connecting piece 1021 is arranged on the at least one positioning pin, and the first suction accessory 151 sucks the at least one connecting piece. The second positioning pin has at least one positioning pin, the second connecting piece 1022 is arranged on the at least one positioning pin, and the second suction accessory 152 sucks the at least one connecting piece. In specific implementation, the at least one suction accessory of the first suction accessory 151 sucks the at least one connecting piece to the at least one positioning pin of the first positioning pin 161, the at least one suction accessory of the second suction accessory 152 sucks the at least one connecting piece to the at least one positioning pin of the second positioning pin, and the suction accessory, the positioning pin and the connecting piece / connecting piece are one-to-one corresponding suction and positioning.

[0031] In the embodiment of the utility model, battery group 101 is put into the containing groove 111 of positioning seat 11, the first suction member 151 and the first positioning pin 161 on the first welding surface 121 adsorb and fix the first connecting sheet 1021, the second suction member 152 and the second positioning pin on the second welding surface 131 adsorb and fix the second connecting sheet 1022. Then rotate left cover plate 12 to the first side 112 of positioning seat 11 to make the first connecting sheet 1021 abut the first end 1011 of battery group 101, rotate right cover plate 13 to the second side 113 of positioning seat 11 to make the second connecting sheet 1022 abut the second end 1012 of battery group 101. Then cover the containing groove 111 of positioning seat 11 with upper cover plate 14, at this time the first clamping portion 171 on the third side 114 and / or the fourth side 115 of positioning seat 11 clamps with the second clamping portion of upper cover plate 14, and the adsorption portion 172 on the third side 114 and / or the fourth side 115 of positioning seat 11 adsorbs upper cover plate 14. Finally, place the assembled cover combined battery welding fixture 100 on the welding conveying belt to the welding position, the clamping jaw clamps left and right cover plates to fix battery welding fixture 100, and the welding equipment realizes simultaneous welding of the two ends of battery group 101 and connecting sheet group 102. After welding, rotate apart left cover plate 12 and right cover plate 13 through the handle position 141 on upper cover plate 14 to take out the product of connecting sheet group 102 welded to the two ends of battery group 101, and battery welding fixture 100 continues the welding of the next cycle.

[0032] In conclusion, the battery welding fixture provided by the utility model is used to weld battery group and connecting sheet group, the connecting sheet group has first connecting sheet and second connecting sheet, the battery welding fixture includes positioning seat, left cover plate, right cover plate and upper cover plate, the positioning seat has containing groove, first side and second side, the first side and the second side are opposite, the battery group is placed in the containing groove side by side to make the battery group have opposite first end and second end, the first end of the battery group is located at the first side of the positioning seat, and the second end of the battery group is located at the second side of the positioning seat, the left cover plate is pivoted to the first side of the positioning seat, the left cover plate has first welding surface, the right cover plate is pivoted to the second side of the positioning seat, the right cover plate has second welding surface, and the upper cover plate detachably covers the containing groove of the positioning seat, wherein the first connecting sheet is arranged on the first welding surface, the second connecting sheet is arranged on the second welding surface, when the battery group is welded with the connecting sheet group, rotate the left cover plate to the first side to make the first connecting sheet on the first welding surface abut the first end of the battery group, rotate the right cover plate to the second side to make the second connecting sheet on the second welding surface abut the second end of the battery group, and the upper cover plate covers the containing groove of the positioning seat and the battery group, so that the two ends of the battery group can be welded with the connecting sheet simultaneously by the double left and right cover plates and the connecting sheet arranged on the double left and right cover plates.

[0033] Although the utility model has been described in conjunction with the drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the utility model and cannot be understood as a limitation of the utility model. In order to clearly describe the required components, the proportions in the schematic drawings do not represent the proportional relationship of the actual components.

[0034] The utility model has been described by the above related embodiments, however, the above embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the changes and decorations made without departing from the spirit and scope of the utility model all belong to the patent protection scope of the utility model.

Claims

1. A battery pack welding fixture for welding a battery pack to a connecting piece assembly, the connecting piece assembly having a first connecting piece and a second connecting piece, characterized in that, The battery pack welding fixture includes: The positioning seat has a receiving groove, a first side and a second side, the first side and the second side are opposite to each other, the battery pack is placed side by side into the receiving groove so that the battery pack has a first end and a second end opposite to each other, the first end is located on the first side and the second end is located on the second side; A left cover plate, pivotally connected to the first side, the left cover plate having a first welding surface; A right cover plate, pivotally connected to the second side, the right cover plate having a second welded surface; and A top cover plate that can be removably covered the receiving slot; The first connecting piece is disposed on the first welding surface, and the second connecting piece is disposed on the second welding surface. When the battery pack is welded to the connecting piece assembly, the left cover plate is rotated to the first side so that the first connecting piece on the first welding surface abuts against the first end, and the right cover plate is rotated to the second side so that the second connecting piece on the second welding surface abuts against the second end. The upper cover plate covers the receiving groove and the battery pack.

2. The battery pack welding fixture as described in claim 1, characterized in that, It also includes a first adsorption element and a second adsorption element. The first adsorption element is disposed on the first welding surface of the left cover plate to adsorb the first connecting piece, and the second adsorption element is disposed on the second welding surface of the right cover plate to adsorb the second connecting piece.

3. The battery pack welding fixture as described in claim 2, characterized in that, It also includes a first positioning pin and a second positioning pin, the first positioning pin being disposed on the first suction member to limit the first connecting piece, and the second positioning pin being disposed on the second suction member to limit the second connecting piece.

4. The battery pack welding fixture as described in claim 3, characterized in that, The first adsorption element is embedded in the left cover plate, the first positioning pin protrudes from the first welding surface, and the first connecting piece has a first positioning hole. When the first connecting piece is disposed on the left cover plate, the first positioning pin passes through the first positioning hole and the first adsorption element adsorbs the first connecting piece. The second adsorption element is embedded in the right cover plate, the second positioning pin protrudes from the second welding surface, and the second connecting piece has a second positioning hole. When the second connecting piece is disposed on the right cover plate, the second positioning pin passes through the second positioning hole and the second adsorption element adsorbs the second connecting piece.

5. The battery pack welding fixture as described in claim 3, characterized in that, The first connecting piece has at least one connecting piece, the first positioning pin has at least one positioning pin, the at least one connecting piece is disposed on the at least one positioning pin, and the first adsorption member adsorbs the at least one connecting piece.

6. The battery pack welding fixture as described in claim 2, characterized in that, The first adsorption element has at least one adsorption element disposed on the left cover plate, and the first connecting piece has at least one connecting piece, the at least one adsorption element adsorbing the at least one connecting piece.

7. The battery pack welding fixture as described in claim 1, characterized in that, The battery pack has multiple positive electrodes and multiple negative electrodes, which are spaced apart at the first end and the multiple positive electrodes are spaced apart at the first end. The first connecting piece has at least one connecting piece, which connects one of the two adjacent positive electrodes and one of the multiple negative electrodes without overlapping.

8. The battery pack welding fixture as described in claim 7, characterized in that, The second connecting piece has at least one connecting piece, and the at least one connecting piece connects the multiple batteries of the battery pack to the at least one connecting piece.

9. The battery pack welding fixture as described in claim 1, characterized in that, It also includes a limiting part, and the positioning seat also has a third side and a fourth side opposite to each other. The limiting part is disposed on the third side and / or the fourth side, and the upper cover plate cooperates with the limiting part to connect the upper cover plate with the positioning seat.

10. The battery pack welding fixture as described in claim 9, characterized in that, The limiting part includes an adsorption part and a first engaging part. The upper cover plate has a second engaging part. The first engaging part and the second engaging part cooperate to make the upper cover plate cover the receiving groove. The adsorption part adsorbs the upper cover plate to fix the upper cover plate to cover the receiving groove.

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