CN217371161U - Busbar welding clamping assembly and battery welding clamping device - Google Patents

Abstract

The utility model provides a busbar welding connects clamping components, which comprises a pressing plate and i, the surface of clamp plate one side is equipped with a plurality of fixed parts, the fixed part is used for fixing the busbar of battery on the clamp plate. The utility model discloses a busbar welding connects clamping assembly can make busbar fast and stable fix on the clamp plate through set up the fixed part on the clamp plate, and convenient operation not only, swift have improved battery welding's efficiency, have improved welding precision and welding uniformity moreover to improve the job stabilization nature and the reliability of group battery. The utility model also provides a battery welding clamping device.

Description

Busbar welding clamping assembly and battery welding clamping device

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a busbar welding connects clamping subassembly and battery welding clamping device is related to.

Background

The power battery is the heart of the new energy automobile, and the safety, the working stability and the reliability of the power battery, which is used as a core component of the new energy automobile, directly influence the service performance and the safety of the new energy automobile. In general, a plurality of battery cells are provided in a battery pack, and the battery cells are electrically connected to each other by a bus bar (the electrode posts/tabs of the battery cells are fixed to the bus bar by welding). In order to ensure the working stability and reliability of the power battery, the connection firmness between the pole/tab and the bus bar and the consistency of each welding position need to be ensured when the battery pack is welded.

In the welding, generally, the positions of the bus bar and the battery pack are fixed by the battery welding device, and then the welding operation is performed. The conventional battery welding and clamping device is inconvenient to operate, the production efficiency is influenced, and the problems of poor installation stability and poor precision between the battery pack and the bus bar exist, so that the welding consistency is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a busbar welding clamping subassembly and battery welding clamping device aims at solving or at least part solves the not enough of above-mentioned background art existence, can make the busbar fix on the clamp plate fast and stably through setting up the fixed part on the clamp plate, and convenient operation, swift not only have improved battery welded efficiency, have improved welding precision and welding uniformity moreover to improve the job stabilization nature and the reliability of group battery.

The utility model provides a busbar welding connects clamping components, which comprises a pressing plate and i, the surface of clamp plate one side is equipped with a plurality of fixed parts, the fixed part is used for fixing the busbar of battery on the clamp plate.

In an implementation manner, the fixing portion includes an installation portion and a limiting member, and the limiting member is matched with the installation portion to fix the busbar on the pressing plate.

In an implementation manner, the mounting portion includes a slot, and the limiting member is disposed in the slot.

In an implementation manner, one end of the limiting member is connected to the inner wall of the clamping groove or the surface of the pressing plate, and an opening through which the bus bar passes is provided between the other end of the limiting member and the inner wall of the clamping groove.

In an implementation manner, a gap is provided between the limiting member and an inner wall of the slot, the limiting member has elasticity, and at least a portion of the gap has a size smaller than the thickness of the busbar.

In an achievable form, the gap has a dimension at the location corresponding to the opening that is smaller than the thickness of the busbar.

In an implementation manner, the surface of the limiting member is provided with an anti-slip structure for limiting the movement of the busbar, and the anti-slip structure is disposed on the surface of the limiting member on the side close to the inner wall of the slot.

In an implementation manner, the anti-slip structure is disposed on the limiting member at a position corresponding to the opening.

In an implementation manner, the limiting member is provided with a guiding structure corresponding to the opening position.

In one implementation, the mounting portion further includes a protruding portion, and the engaging groove and the protruding portion form a mounting structure matching the shape of the busbar in combination.

In an implementation manner, the protruding portion includes a first protruding portion and a second protruding portion which are arranged at intervals, and the clamping groove is located between the first protruding portion and the second protruding portion.

In an implementation manner, the pressure plate is provided with a welding hole at a position corresponding to the mounting portion.

In an achievable form, the mounting portion is provided with a stop for stopping against the busbar.

In an achievable form, the surface of the stop for stopping against the side of the busbar is of non-planar configuration.

The utility model also provides a battery welding clamping device, including above the busbar welding clamping subassembly, battery welding clamping device is still including the tray that is used for the bearing battery, the tray with the clamp plate sets up relatively, the fixed part set up in the clamp plate orientation the surface of tray one side.

In an implementation manner, the surface of the tray on the side facing the pressure plate is provided with a limiting block for limiting the position of the battery.

In one implementation, a handling assembly is provided on the pallet.

In an implementation manner, the battery welding and clamping device further comprises a positioning assembly, the positioning assembly is simultaneously connected with the pressing plate and the tray, and the positioning assembly is used for positioning between the pressing plate and the tray.

In an implementation manner, the positioning assembly includes a positioning rod, the pressing plate is provided with a first positioning hole, the tray is provided with a second positioning hole, and two ends of the positioning rod are respectively inserted into the first positioning hole and the second positioning hole.

In an implementation manner, the battery welding and clamping device further comprises a locking assembly, the locking assembly is simultaneously connected with the pressing plate and the tray, and the locking assembly is used for clamping the pressing plate and the tray.

In an implementation manner, the locking assembly comprises a screw, a pressing block and a bolt, two ends of the screw are respectively connected with the pressing plate and the tray, and the pressing block and the bolt are movably sleeved on the screw.

The utility model provides a busbar welding connects clamping assembly through setting up the fixed part on the clamp plate, can make the busbar fix on the clamp plate fast and stably through the fixed part, and convenient operation, swift not only have improved battery welded efficiency, have improved welding precision and welding uniformity moreover to improve the job stabilization nature and the reliability of group battery.

Drawings

Fig. 1 is the utility model discloses in the embodiment of the utility model provides a spatial structure sketch map of battery welding clamping device.

Fig. 2 is a schematic diagram of the exploded structure of fig. 1.

Fig. 3 is a bottom view of the platen of fig. 1.

Fig. 4 is an enlarged schematic view of the structure at the position a in fig. 3.

Fig. 5 is a schematic structural diagram of a bus bar according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a limiting member according to an embodiment of the present invention.

Fig. 7 is a schematic structural view of a stopper according to another embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a position-limiting member according to another embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms of orientation such as up, down, left, right, front, back, top, bottom, etc. (if any) referred to in the specification and claims of the present invention are defined as the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the sake of clarity and convenience in technical solutions. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

As shown in fig. 1 to 4, the embodiment of the present invention provides a battery welding clamping device, which is used for fixing the positions of a battery pack 7 and a bus bar 6 when the battery pack 7 and the bus bar 6 are welded, so as to facilitate the welding operation. This battery welding clamping device includes that busbar welding connects clamping assembly and is used for bearing the tray 2 of battery, and this busbar welding connects clamping assembly to include clamp plate 1, and tray 2 sets up with clamp plate 1 is relative. The surface of the pressure plate 1 facing the tray 2 is provided with a fixing portion 11, and the fixing portion 11 is used for fixing the bus bar 6 of the battery 7 on the pressure plate 1.

As shown in fig. 3 and 4, as an embodiment, the fixing portion 11 includes a mounting portion 111 for receiving the bus bar 6 and a limiting member 112 for fixing the bus bar 6, and the limiting member 112 is capable of cooperating with the mounting portion 111 to fix the bus bar 6 on the pressure plate 1.

Specifically, in the present embodiment, the pressing plate 1 and the tray 2 are both of a flat plate structure, and the pressing plate 1 and the tray 2 are preferably made of an insulating material such as bakelite. During welding, the tray 2 supports the arranged battery packs 7, the bus bar 6 is installed on the pressing plate 1 and then aligned to the tray 2, the bus bar 6 is made to contact with the battery packs 7 by pressing the pressing plate 1 downwards, and then the bus bar 6 and tabs (not shown) on the battery packs 7 are welded and formed. Simultaneously, when production, can prepare the polylith in advance and preassemble clamp plate 1 of busbar 6 and the tray 2 that the bearing has group battery 7, when carrying out the welding on the production line, only need on the production line station before the welding of welding machine with tray 2 and the clamp plate 1 combination clamping can realize high-efficient welding.

This embodiment is through setting up fixed part 11 on clamp plate 1, and fixed part 11 is including the installation department 111 that is used for holding busbar 6 and the locating part 112 that is used for fixed busbar 6, cooperatees through installation department 111 and locating part 112, can make busbar 6 fix on clamp plate 1 fast and stably, and not only convenient operation, swift has improved battery welded efficiency, has improved welding precision and welding uniformity moreover to improve the job stabilization nature and the reliability of group battery 7.

As shown in fig. 3, in one embodiment, the number of the fixing portions 11 is plural, and the plurality of fixing portions 11 are arranged in series along the longitudinal direction of the platen 1 and arranged in two rows along the width direction of the platen 1. The number and arrangement of the fixing portions 11 may be determined according to the bus bar distribution of the actual battery.

As shown in fig. 4, as an embodiment, the mounting portion 111 includes a slot 1111 for receiving the bus bar 6, and the limiting member 112 is disposed in the slot 1111, and the bus bar 6 is clamped by the limiting member 112 and the slot 1111 in a matching manner, so that the bus bar 6 is fixed relative to the pressing plate 1 and does not fall down during a turnover process. The limiting member 112 may be configured to limit the bus bar 6 to be fixed in the slot 1111, and the structure and size of the slot 1111 may be adjusted according to the shape, structure and size of the bus bar 6.

As shown in fig. 4 and fig. 6, as an embodiment, the limiting element 112 is a Z-shaped sheet structure, one end of the limiting element 112 is connected to an inner wall of the slot 1111 (in other embodiments, the limiting element 112 may also be connected to the surface of the platen 1), an opening 113 for the bus bar 6 to pass through (be inserted into) is provided between the other end of the limiting element 112 and the inner wall of the slot 1111 (that is, the limiting element 112 is not connected to the inner wall of the slot 1111 at the position of the opening 113), and the slot 1111 is extended along the insertion direction of the bus bar 6. When the bus bar 6 is mounted, the bus bar 6 is inserted into the card slot 1111 from the position of the opening 113 of the stopper 112.

As an embodiment, the limiting member 112 is an elastic sheet made of an elastic material, and the limiting member 112 has elasticity, so that the limiting member 112 can fix the bus bar 6 in the slot 1111 through the elasticity thereof, and meanwhile, the elasticity of the elastic sheet enables the bus bar 6 to have an automatic locking function, thereby facilitating the fixation of the bus bar 6, and improving the installation and welding efficiency and reliability of the battery pack 7 (of course, in other embodiments, the limiting member 112 may also be a limiting part without elasticity).

As shown in fig. 4, as an embodiment, a gap is provided between the limiting member 112 and the inner wall of the slot 1111, and at least a portion of the gap is smaller than the thickness of the bus bar 6.

Specifically, since a gap is provided between the limiting member 112 and the inner wall of the slot 1111, the bus bar 6 can smoothly pass through (be inserted into) the opening 113 of the limiting member 112. Meanwhile, since the size of the gap at least some positions is smaller than the thickness of the bus bar 6, in combination with the elastic action of the limiting member 112, after the bus bar 6 is inserted between the limiting member 112 and the inner wall of the slot 1111, the limiting member 112 can perform an extrusion clamping action on the bus bar 6 when the elastic deformation is recovered (if the size of the gap at all positions is greater than or equal to the thickness of the bus bar 6, the limiting member 112 cannot perform the extrusion clamping action on the bus bar 6), so that the bus bar 6 is fixed in the slot 1111.

As shown in fig. 4, as an embodiment, the size of the gap corresponding to the position of the opening 113 is smaller than the thickness of the bus bar 6, so that the deformation of the position-limiting member 112 at the position of the opening 113 is restored to be larger than that at other positions, thereby the position-limiting member 112 clamps and fastens the bus bar 6 at the position of the opening 113.

As shown in fig. 4 to fig. 6, as an embodiment, an anti-slip structure 1121 for limiting the movement of the bus bar 6 is disposed on a surface of the limiting member 112, and the anti-slip structure 1121 is disposed on a surface of the limiting member 112 on a side close to an inner wall of the slot 1111. The anti-slip structure 1121 is used to further prevent the bus bar 6 from slipping off or shifting.

As shown in fig. 4 and fig. 6, as an embodiment, the anti-slip structure 1121 is disposed at the position of the limiting member 112 corresponding to the opening 113.

As shown in fig. 6, as an embodiment, the anti-slip structure 1121 is a plurality of ribs disposed on the surface of the limiting member 112. As shown in fig. 8, in another embodiment, the anti-slip structure 1121 is a plurality of protruding points disposed on the surface of the limiting member 112. Of course, in other embodiments, the anti-slip structure 1121 can also be other friction-increasing structures.

As shown in fig. 4 and fig. 6, as an embodiment, the position of the limiting member 112 corresponding to the opening 113 is provided with a guiding structure 1122, so as to facilitate the bus bar 6 to pass through the opening 113 of the limiting member 112.

As shown in fig. 4 and 6, as an embodiment, the guiding structure 1122 is a tilting structure disposed at an end of the limiting member 112, and the tilting structure is formed by bending the end of the limiting member 112 toward a side away from the slot 1111. Of course, in other embodiments, the tilting structure may also be formed by bending (or rolling) the end of the limiting member 112 toward the side close to the slot 1111.

As shown in fig. 4, as an embodiment, the mounting portion 111 further includes a protruding portion, and the slot 1111 and the protruding portion combine to form a mounting structure matching with the shape of the bus bar 6.

As shown in fig. 4, as an embodiment, the protrusion includes a first protrusion 1112 and a second protrusion 1113 which are spaced apart from each other, and the slot 1111 is located between the first protrusion 1112 and the second protrusion 1113.

Specifically, in the present embodiment, the bus bar 6 is a multi-fold dish-shaped structure (or referred to as a "u" shape structure, that is, the middle position of the bus bar 6 protrudes to one side) formed by stamping/casting, and the first protrusion 1112 and the second protrusion 1113 are respectively disposed on two sides of the slot 1111, so that the protruding portion on the bus bar 6 can be accommodated in the slot 1111, and two ends of the bus bar 6 can respectively abut against the first protrusion 1112 and the second protrusion 1113, that is, the mounting portion 111 can just support the whole bus bar 6, thereby improving the mounting stability of the bus bar 6, and facilitating the welding of the bus bar 6 and the battery pack 7.

As shown in fig. 1 to 3, as an embodiment, the pressure plate 1 is provided with a welding hole 12 at a position corresponding to the mounting portion 111, and the welding hole 12 is inserted by a welding head of an external welding machine to weld the bus bar 6 and the tab of the battery pack 7.

As shown in fig. 3 and 4, as an embodiment, the welding hole 12 is disposed corresponding to the position of the first protrusion 1112 and/or the second protrusion 1113.

As shown in fig. 3 and 4, as an embodiment, the mounting portion 111 is provided with a stopper 1114 for stopping the bus bar 6, and the stoppers 1114 on all the fixing portions 11 are disposed on the same side of the pressure plate 1.

Specifically, the purpose of the stop 1114 is to: 1. the positioning accuracy of the bus bar 6 is improved, and the position of the bus bar 6 is further limited: after the bus bar 6 is installed in place, the bus bar 6 can abut against the stop block 1114, so that the bus bar 6 is convenient to position and fix, and the positioning precision and the welding precision of the bus bar 6 are improved; 2. the pressing plate 1 and the bus bar 6 are convenient to disassemble: because the stop dogs 1114 on all the fixing parts 11 are arranged on the same side, the bus bar 6 can only be inserted into the limiting part 112 from the same side (the opening 113 side of the limiting part 112), and after the welding is completed, the pressing plate 1 can be translated to the other side (namely, the side without the opening) to separate the pressing plate from the bus bar 6, so that the quick demoulding of the pressing plate 1 is realized (the demoulding direction is the direction indicated by the arrow S), the demoulding efficiency is improved, the influence of the elastic sheet structure of the limiting part 112 on the clamping efficiency is solved (if the clamping mode is lifted up and down according to a common bus bar clamp, the elastic sheet cannot be separated from the battery after the welding due to the structural interference).

As shown in fig. 4, as an embodiment, a stopper 1114 is disposed on the first protrusion 1112 and/or the second protrusion 1113.

As shown in fig. 7, the stopper 1114 is configured to stop the surface of the bus bar 6 from being non-planar.

As shown in fig. 5 and 7, in one embodiment, the bus bar 6 is provided with a notch 61, and the stopper 1114 is provided with a convex portion 1114a at a position corresponding to the notch 61. During installation, the notch 61 on the bus bar 6 needs to be aligned with the convex 1114a on the stop 1114 to achieve the fool-proof effect and prevent the bus bar 6 from being installed incorrectly. Of course, in other embodiments, the non-planar structure on the stop 1114 may be other structures, and may be adjusted accordingly according to the shape of the bus bar 6.

As shown in fig. 1 and 2, the tray 2 includes one or more bottom plates, and the tray 2 is used for supporting the battery pack 7. Tray 2 is equipped with stopper 21 on the surface towards clamp plate 1 one side, and stopper 21 is preferably made for insulating material such as bakelite, and stopper 21 is used for carrying out the spacing in the tray 2 bearing plane to group battery 7 to improve group battery 7's positioning efficiency and welding precision, realize group battery 7's stable bearing transport simultaneously.

As shown in fig. 2, as an embodiment, the limiting block 21 includes a first limiting block 211 disposed along the length direction of the tray 2 and a second limiting block 212 disposed along the width direction of the tray 2, and two sides of the battery pack 7 can abut against the first limiting block 211 and the second limiting block 212, respectively, so as to position the battery pack 7. By adjusting the shape, the distance, the size and other parameters of the first stopper 211 and the second stopper 212, the battery packs 7 of different sizes/arrangement directions can be adapted.

As shown in fig. 1 and 2, as an embodiment, a carrying assembly 3 is provided on the tray 2, so that the entire carrying of the battery welding and clamping device is facilitated.

As shown in fig. 1 and 2, the carrying assembly 3 includes four hanging rings (of course, other numbers are possible) which are respectively disposed at four corners of the tray 2. Of course, in other embodiments, the handling assembly 3 may have other configurations.

As shown in fig. 1 and fig. 2, as an embodiment, the battery welding and clamping device further includes a positioning assembly 4, the positioning assembly 4 is connected to the pressing plate 1 and the tray 2, and the positioning assembly 4 is used for positioning between the pressing plate 1 and the tray 2.

As shown in fig. 1 and 2, as an embodiment, the positioning assembly 4 includes a positioning rod 41, the pressing plate 1 is provided with a first positioning hole 13, the tray 2 is provided with a second positioning hole 22, and both ends of the positioning rod 41 are inserted into the first positioning hole 13 and the second positioning hole 22, respectively, so as to position the pressing plate 1 and the tray 2.

As shown in fig. 1 and 2, the number of positioning rods 41 is two, and the two positioning rods 41 are provided at both ends of the platen 1.

As shown in fig. 1 and 2, as an embodiment, the battery welding and clamping device further includes a locking assembly 5, the locking assembly 5 is connected to the pressure plate 1 and the tray 2 at the same time, and the locking assembly 5 is used for clamping the pressure plate 1 and the tray 2 in the vertical direction.

As shown in fig. 1 and 2, as an embodiment, the locking assembly 5 includes a screw 51, a pressing block 52 and a bolt 53, two ends of the screw 51 are respectively connected to the pressing plate 1 and the tray 2, and both the pressing block 52 and the bolt 53 are movably sleeved on the screw 51.

As shown in fig. 1 and 2, in one embodiment, the pressing plate 1 is provided with a first guide groove 14, the tray 2 is provided with a second guide groove 23, and the pressing block 52 is provided with a through hole 521. The second guiding groove 23 is an inverted T-shaped structure, and a protrusion 511 is disposed at the bottom end of the screw 51. During assembly, the bump 511 at the bottom end of the screw 51 is clamped in the second guide groove 23, and the top end of the screw 51 sequentially passes through the first guide groove 14 and the through hole 521 and then is connected with the bolt 53; by tightening the bolts 53, the pressing block 52 can be made to apply downward pressure to the pressing plate 1, thereby clamping the pressing plate 1 and the pallet 2 in the vertical direction.

As shown in fig. 2, the first guide groove 14 and the second guide groove 23 are both open grooves opened at one side (toward the outside) as one embodiment. When the bolt 53 is loosened, the screw 51 is pulled outward, so that the screw 51 can be separated from the first guide groove 14 and the second guide groove 23 simultaneously, and the disassembly is convenient.

As shown in fig. 1 and 2, each locking assembly 5 is provided with two screws 51, and the two screws 51 are respectively disposed at opposite ends of the pressing block 52. Of course, in other embodiments, more screws 51 may be provided in each locking assembly 5.

As shown in fig. 1 and 2, as an embodiment, the number of the locking assemblies 5 is two or more (in the present embodiment, the number of the locking assemblies 5 is three), and the two or more locking assemblies 5 are spaced apart along the length direction of the pressure plate 1.

In this embodiment, the usage of the battery welding and clamping device may be as follows:

1. installing a bus bar 6 from the opening 113 side of the limiting piece 112 to the clamping groove 1111 on the pressing plate 1, installing the bus bar 6 in all required clamping grooves 1111, and stopping the bus bar 6 against the stop block 1114 and limiting by the limiting piece 112 at the moment; wherein, the distribution of the bus bars 6 is arranged according to the distribution form of the battery units in the battery pack 7 (in the production line, a large number of pressing plates 1 which are pre-assembled with the bus bars 6 are prepared for welding the battery pack 7 in the production line);

2. the battery units are placed on the tray 2 and arranged to form a required battery pack 7 structure, and a limiting block 21 is arranged on the tray 2 and attached to the outer edge of the battery pack 7 to horizontally limit the battery pack 7;

3. mounting a carrying assembly 3 on the tray 2, and moving the tray 2 with the battery pack 7 mounted thereon to a station at the front side of the welding machine by using the carrying assembly 3 to mount the pressing plate 1;

4. the side of the pressing plate 1, on which the bus bars 6 are arranged, faces downwards, the bus bars 6 on the pressing plate 1 and the lugs on the battery units are aligned and then placed on the top of the battery pack 7, so that the bus bars 6 are in contact with the lugs of the battery units;

5. a positioning component 4 and a locking component 5 are arranged on the tray 2 and the pressure plate 1, so that the tray 2 and the pressure plate 1 are locked and fixed;

6. the locked battery welding and clamping device is moved to a welding station of a welding machine by using the carrying assembly 3, a welding head of the welding machine downwards penetrates through the welding hole 12 to be abutted against the busbar 6, and the busbar 6 and the lugs of the battery units are welded together;

7. after welding is finished, the battery welding and clamping device is moved to a dismantling station by using the carrying assembly 3, and the positioning assembly 4 and the locking assembly 5 are dismantled;

8. the pressing plate 1 is moved in a translational manner in the direction of the end of the mounting portion 111 provided with the stopper 1114, so that the bus bar 6 is moved out of the opening 113 of the stopper 112 in a translational manner, thereby separating the pressing plate 1 from the battery pack 7, and then the welded battery pack 7 can be removed from the tray 2. The pressing plate 1 and the tray 2 are returned to the pre-welding process to again mount the bus bars 6 and the battery cells for the next welding operation.

The embodiment of the utility model provides a busbar welding clamping subassembly and battery welding clamping device, through set up fixed part 11 on clamp plate 1, fixed part 11 includes installation department 111 that is used for holding busbar 6 and locating part 112 that is used for fixed busbar 6, cooperate with locating part 112 through installation department 111, can make busbar 6 fix on clamp plate 1 fast and stably; meanwhile, the positioning function of the positioning component 4 and the locking function of the locking component 5 are combined, so that the rapid and accurate positioning and clamping between the pressing plate 1 and the tray 2 can be realized, the operation is convenient and rapid, the battery welding efficiency is improved, the welding precision and the welding consistency are improved, the risks of insufficient solder and partial failure of solder are avoided, and the working stability and the reliability of the battery pack 7 are improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (19)

1. The bus bar welding clamp assembly is characterized by comprising a pressing plate (1), wherein a plurality of fixing parts (11) are arranged on the surface of one side of the pressing plate (1), and the fixing parts (11) are used for fixing bus bars (6) of batteries on the pressing plate (1).

2. The bus bar welding device clip assembly according to claim 1, wherein the fixing portion (11) includes a mounting portion (111) and a retaining member (112), the retaining member (112) cooperating with the mounting portion (111) to fix the bus bar (6) to the pressure plate (1).

3. The bus bar welding clamp assembly of claim 2, wherein the mounting portion (111) includes a slot (1111), the stop (112) being disposed within the slot (1111).

4. The busbar welding clamp assembly according to claim 3, wherein one end of the stopper (112) is connected to an inner wall of the slot (1111) or a surface of the pressing plate (1), and an opening (113) through which the busbar (6) passes is provided between the other end of the stopper (112) and the inner wall of the slot (1111).

5. The busbar welding device clip assembly according to claim 4, wherein a gap is provided between the retaining member (112) and an inner wall of the slot (1111), the retaining member (112) having elasticity, at least a portion of the gap having a size smaller than a thickness of the busbar (6).

6. The busbar welding clamp assembly according to claim 5, wherein the size of the gap at the location corresponding to the opening (113) is smaller than the thickness of the busbar (6).

7. The bus bar welding device clip assembly according to claim 4, wherein the surface of the stopper (112) is provided with an anti-slip structure (1121) for limiting the movement of the bus bar (6), and the anti-slip structure (1121) is disposed at least at a position corresponding to the opening (113) on the stopper (112).

8. The bus bar welding clamp assembly according to claim 4, wherein the retainer (112) is provided with a guide structure (1122) at a position corresponding to the opening (113).

9. The bus bar welding clamp assembly of claim 3, wherein the mounting portion (111) further comprises a boss, the slot (1111) and the boss combining to form a mounting structure that matches the shape of the bus bar (6).

10. The bus bar welding device clip assembly of claim 9, wherein the boss includes first and second spaced bosses (1112, 1113), and the catch (1111) is located between the first and second bosses (1112, 1113).

11. The bus bar welding clamp assembly according to claim 2, wherein the pressure plate (1) is provided with a welding hole (12) at a position corresponding to the mounting portion (111).

12. The bus bar welding clamp assembly according to claim 2, wherein a stop (1114) for stopping against the bus bar (6) is provided on the mounting portion (111).

13. The bus bar welding clamp assembly of claim 12, wherein a surface of the stop (1114) for stopping against a side of the bus bar (6) is a non-planar structure.

14. A battery welding jig comprising the busbar welding jig assembly according to any one of claims 1 to 13, the battery welding jig further comprising a tray (2) for holding a battery, the tray (2) being disposed opposite to the pressing plate (1), and the fixing portion (11) being disposed on a surface of the pressing plate (1) facing a side of the tray (2).

15. The battery welding clamping device as set forth in claim 14, characterized in that the surface of the tray (2) on the side facing the pressure plate (1) is provided with a stopper (21) for limiting the position of the battery.

16. The battery welding clamping device according to claim 14 or 15, further comprising a positioning assembly (4), wherein the positioning assembly (4) is connected with the pressure plate (1) and the tray (2) at the same time, and the positioning assembly (4) is used for positioning between the pressure plate (1) and the tray (2).

17. The battery welding clamping device according to claim 16, wherein the positioning assembly (4) comprises a positioning rod (41), a first positioning hole (13) is formed in the pressing plate (1), a second positioning hole (22) is formed in the tray (2), and two ends of the positioning rod (41) are respectively inserted into the first positioning hole (13) and the second positioning hole (22).

18. The battery welding clamping device according to claim 14 or 15, further comprising a locking assembly (5), wherein the locking assembly (5) is connected with the pressure plate (1) and the tray (2) at the same time, and the locking assembly (5) is used for clamping the pressure plate (1) and the tray (2).

19. The battery welding clamping device according to claim 18, wherein the locking assembly (5) comprises a screw (51), a pressing block (52) and a bolt (53), two ends of the screw (51) are respectively connected with the pressing plate (1) and the tray (2), and the pressing block (52) and the bolt (53) are movably sleeved on the screw (51).

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