A welding jig for battery side plate lugs

Abstract

The present invention discloses a battery side plate hanging ear welding jig, which is used to position the hanging ear at a predetermined welding position of the battery side plate, and comprises a base for carrying the battery side plate, a battery side plate positioning mechanism provided on the base and used to position the battery side plate, and a hanging ear positioning mechanism for pressing the hanging ear at the predetermined welding position; the hanging ear positioning mechanism is formed with an avoidance hole for the laser of the laser welder to penetrate to the predetermined welding position. Due to the adoption of the above technical solution, the present invention facilitates the positioning of the hanging ear on the battery side plate.

Description

Technical Field

[0001] The present invention relates to the technical field of tooling fixtures, and particularly to a welding jig for battery side plate lugs. Background Art

[0002] As Figure 1 shown, a battery module side plate produced by our company includes a battery side plate 1 and a lug 2 welded to the battery side plate 1. The lug 2 includes a welding plate 21 welded to the battery side plate 1 and a folding plate 22 formed at the edge of the welding plate 21 and perpendicular to the welding plate 21. When manufacturing this battery module side plate, a laser welding machine is used to weld the welding plate 21 to the battery side plate 1 to realize the connection and fixation of the lug 2 and the battery side plate 1. However, there is currently no special jig for positioning the lug on the battery side plate, and it is not easy to position the lug on the battery side plate. There is an urgent need to develop a welding jig for battery side plate lugs that can easily position the lug on the battery side plate. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a welding jig for battery side plate lugs that can easily position the lug on the battery side plate.

[0004] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a welding jig for battery side plate lugs, which is used to position the lug at a predetermined welding position on the battery side plate, and includes a base for carrying the battery side plate, a battery side plate positioning mechanism provided on the base and used for positioning the battery side plate, and a lug positioning mechanism for pressing the lug at the predetermined welding position; an avoidance hole is formed on the lug positioning mechanism for the laser of the laser welding machine to penetrate into the predetermined welding position.

[0005] Furthermore, the lug positioning mechanism includes a lug clamping mechanism for clamping the lug, a clamping mechanism positioning part provided on the base and used for positioning the lug clamping mechanism to limit the lug clamped in the lug clamping mechanism at the predetermined welding position, and a pressing mechanism for pressing the lug clamping mechanism to press the lug on the battery side plate. The avoidance hole is formed on the lug clamping mechanism and is adapted to the lug. When clamping the lug, the lug clamping mechanism clamps the lug at the bottom end of the avoidance hole.

[0006] Furthermore, the ear-hanging clamping mechanism includes a clamping portion for clamping the ear and a positioning plate provided on the clamping portion and used to cooperate with the positioning portion of the clamping mechanism to position the ear-hanging clamping portion, the clamping portion includes a clamping block provided on the positioning plate, the clamping block is formed with a mounting hole that is adapted to the ear and used to install the ear, and a receiving hole whose inner end passes through the side wall of the mounting hole and whose outer end passes through the outer surface of the clamping block, the clamping portion also includes a pressing head provided in the receiving hole and a pushing portion for pushing the pressing head toward the mounting hole so that the pressing head presses the ear installed in the mounting hole, and a through hole is formed on the positioning plate corresponding to the position of the mounting hole and vertically passes through its two side surfaces, and the through hole and the mounting hole constitute the avoidance hole.

[0007] Furthermore, at least two pin holes are formed on the positioning plate; the positioning portion of the clamping mechanism includes pins arranged on the base corresponding to the positions of each pin hole and adapted to the pin holes, and when each pin hole is assembled on the corresponding pin, the hanging ear clamped in the clamping portion is confined to the predetermined welding position.

[0008] Furthermore, the pushing portion includes a pressing plate provided on the pressing head and located outside the clamping block, a pressing hole vertically penetrating the pressing plate, a guide rod with one end fixed on the clamping block and the other end passing through the pressing hole outward to form a blocking head, and an elastic member with one end abutting the blocking head and the other end abutting the pressing plate. When the elastic member presses the pressing plate onto the clamping block, the inner end of the pressing head penetrates into the mounting hole.

[0009] Furthermore, the hanging ear includes a welding plate for welding to the battery side plate; the clamping portion also includes a baffle provided on the side wall of the mounting hole, when the hanging ear is assembled into the mounting hole from one end of the mounting hole facing away from the positioning plate and the welding plate abuts against the baffle, the side of the welding plate facing away from the baffle is flush with the side of the clamping block facing away from the positioning plate or the side of the welding plate facing away from the baffle protrudes from the side of the clamping block facing away from the positioning plate and is parallel to the side of the clamping block facing away from the positioning plate.

[0010] Furthermore, the battery side plate positioning mechanism includes a first positioning portion for positioning the battery side plate in a length direction and a second positioning portion for positioning the battery side plate in a width direction.

[0011] Further, the first positioning portion includes a first baffle provided on the base and a first pushing portion for pushing the battery side plate toward the first baffle. The first baffle has a first blocking surface for blocking a short side edge of the battery side plate; the second positioning portion includes a second baffle provided on the base and a second pushing portion for pushing the battery side plate toward the second baffle. The second baffle has a second blocking surface perpendicular to the first blocking surface and for blocking a long side edge of the battery side plate.

[0012] Further, the first pushing portion includes a first vertical plate provided on the base, a first pushing block provided on a side of the first vertical plate facing the first baffle, a first pushing member provided between the first vertical plate and the first pushing block and for pushing the first pushing block toward the first baffle, and a first guiding portion for guiding the movement of the first pushing block; the second pushing portion includes a second vertical plate provided on the base, a second pushing block provided on a side of the second vertical plate facing the second baffle, a second pushing member provided between the second vertical plate and the second pushing block and for pushing the second pushing block toward the second baffle, and a second guiding portion for guiding the movement of the second pushing block.

[0013] Further, the base includes a base plate and a support and cooling portion provided on the upper surface of the base plate corresponding to the predetermined welding position for supporting and cooling the battery side plate. The support and cooling portion includes a support block provided on the base plate and a cooling block provided on the support block. The cooling block includes a cooling block body, a cooling medium channel formed in the cooling block body, a cooling medium inlet formed on the surface of the cooling block body for supplying cooling medium to the cooling medium channel, and a cooling medium outlet formed on the surface of the cooling block body for discharging the cooling medium in the cooling medium channel.

[0014] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0015] Before welding the lugs to the battery side plate, the base bears the battery side plate, and the battery side plate positioning mechanism positions the battery side plate so that the side plate is in a fixed and accurate position; the lug positioning mechanism presses the lugs against the predetermined welding position on the battery side plate to position the lugs on the battery side plate. Then the lugs can be welded. During welding, the laser of the laser welder passes through the avoidance hole, and the lugs pressed on the battery side plate can be welded to the battery side plate. The battery side plate lug welding fixture of the present invention facilitates positioning the lugs on the battery side plate. Description of the Drawings

[0016] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the side plate of the battery module;

[0018] Figure 2 is a schematic structural diagram of a preferred embodiment of a welding jig for battery side plate lugs of the present invention;

[0019] Figure 3 is a schematic structural diagram of the support cooling part in a welding jig for battery side plate lugs of the present invention;

[0020] Figure 4 is Figure 3 the A-A cross-sectional view of

[0021] Figure 5 is a schematic structural diagram of the first pushing part in a welding jig for battery side plate lugs of the present invention;

[0022] Figure 6 is a schematic structural diagram of the second pushing part in a welding jig for battery side plate lugs of the present invention;

[0023] Figure 7 is a schematic structural diagram of the lug clamping mechanism in a welding jig for battery side plate lugs of the present invention;

[0024] Figure 8 is Figure 7 the structural diagram when the pressing part is omitted in

[0025] Figure 9 is Figure 7 the structural diagram of the pressing part in

[0026] Figure 10 is a schematic combined structural diagram of the base, the battery side plate positioning mechanism and the clamping mechanism positioning part in a welding jig for battery side plate lugs of the present invention;

[0027] Figure 11 is a schematic structural diagram of the pressing mechanism in a welding jig for battery side plate lugs of the present invention.

[0028] The meanings of the reference numerals in the drawings are as follows:

[0029] Battery side plate - 1; Hanging ear - 2; Welding plate - 21; Folding plate - 22; Base - 3; Battery side plate positioning mechanism - 4; Hanging ear positioning mechanism - 5; Seat plate - 31; Support cooling part - 32; Support block - 321; Cooling block - 322; Cooling block body - 3221; Cooling medium channel - 3222; Cooling medium inlet - 3223; Cooling medium outlet - 3224; First positioning part - 41; Second positioning part - 42; First baffle - 411; First pushing part - 412; First vertical plate - 4121; First pushing block - 4122; First pushing member - 4123; First guiding part - 4124; First guiding rod - 4124a; First guiding hole - 4124b; Second baffle - 421; Second pushing part - 422; Second vertical plate - 4221; Second pushing block - 4222; Second pushing member - 4223; Second guiding part - 4224; Second guiding rod - 4224a; Second guiding hole - 4224b; Hanging ear clamping mechanism - 51; Clamping mechanism positioning part - 52; Pressing mechanism - 53; Avoidance hole - 54; Clamping part - 511; Positioning plate - 512; Clamping block - 5111; Pressing head - 5112; Pushing and pressing part - 5113; Stopper - 5114; Mounting hole - 5111a; Accommodating hole - 5111b; Pressing plate - 5113a; Pressing hole - 5113b; Guide rod - 5113c; Elastic member - 5113d; Through hole - 5121; Pin hole - 5122; Fixed block - 521; Pin - 522; Rotary cylinder - 531; Cross plate - 532; Pressing block - 533. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention herein are only for the purpose of describing specific embodiments and are not intended to limit this invention.

[0033] As Figure 2As shown in the figure, an embodiment of a welding fixture for battery side plate lugs of the present invention includes a base 3, a battery side plate positioning mechanism 4, and two lug positioning mechanisms 5. The base 3 is used to carry the battery side plate. The battery side plate positioning mechanism 4 is arranged on the base 3 and is used to position the battery side plate. The lug positioning mechanism 5 is used to press the lug against a predetermined welding position on the battery side plate. An avoidance hole is formed on the lug positioning mechanism 5, and the avoidance hole is used for the laser of the laser welder to penetrate to the predetermined welding position. The welding fixture for battery side plate lugs of the present invention is used to position the lug at the predetermined welding position of the battery side plate, and has the advantage of conveniently positioning the lug on the battery side plate. Before welding the lug to the battery side plate, the base 3 carries the battery side plate, and the battery side plate positioning mechanism 4 positions the battery side plate so that the side plate is in a fixed and accurate position. The lug positioning mechanism 5 presses the lug against the predetermined welding position on the battery side plate to realize positioning the lug on the battery side plate, and then the lug can be welded. During welding, the laser of the laser welder passes through the avoidance hole, and the lug pressed against the battery side plate can be welded to the battery side plate. It can be understood that the number of the lug positioning mechanisms 5 is not limited to two, and its specific number is determined according to the number of lugs to be welded on the battery side plate, that is, the number of the lug positioning mechanisms 5 is the same as the number of the predetermined welding positions of the battery side plate.

[0034] As Figure 2-4As shown, the base 3 includes a base plate 31 and two support and cooling parts 32. The support and cooling parts 32 are arranged on the upper surface of the base plate 31 corresponding to the predetermined welding positions. The support and cooling parts 32 are used to support and cool the battery side plates. It can be understood that the number of the support and cooling parts 32 is not limited to two, and can also be other numbers, as long as there is a support and cooling part 32 corresponding to each of the predetermined welding positions. The support and cooling part 32 includes a support block 321 and a cooling block 322. The support block 321 is arranged on the base plate 31, and the cooling block 322 is arranged on the support block 321. The cooling block 322 includes a cooling block body 3221, a cooling medium channel 3222, a cooling medium inlet 3223 and a cooling medium outlet 3224. The cooling medium channel 3222 is formed in the cooling block body 3221, and both the cooling medium inlet 3223 and the cooling medium outlet 3224 are formed on the surface of the cooling block body 3221. The cooling medium inlet 3223 is used to supply cooling medium to the cooling medium channel 3222, and the cooling medium outlet 3224 is used to discharge the cooling medium in the cooling medium channel 3222. When the battery side plates are supported on the base 3, the battery side plates are supported on the cooling blocks 322. During use, cooling medium is continuously filled into the cooling medium channel 3222 from the cooling medium inlet 3223, and after passing through the cooling channel, it is discharged through the cooling medium outlet 3224, so that the cooling blocks 322 can cool the battery side plates and prevent the battery side plates from deforming due to the high temperature generated by welding. It can be understood that the structure of the support and cooling part 32 is not limited to the above description. For example, in one embodiment, the support and cooling part 32 can also only include the cooling block 322, and the cooling block 322 is directly connected to the base plate 31, and this structure can also realize the support and cooling of the battery side plates.

[0035] The battery side plate positioning mechanism 4 includes a first positioning part 41 and a second positioning part 42. The first positioning part 41 is used to position the length direction of the battery side plates, and the second positioning part 42 is used to position the width direction of the battery side plates. By positioning the length direction and the width direction of the battery side plates through the first positioning part 41 and the second positioning part 42 respectively, the positioning of the battery side plate positioning mechanism 4 on the battery side plates can be realized.

[0036] The first positioning portion 41 includes a first baffle 411 and a first pushing portion 412. The first baffle 411 is disposed on the base 3 and is located on one side of the cooling block 322. Specifically, the first baffle 411 is disposed on the seat plate 31. The first pushing portion 412 is disposed on the other side opposite to the cooling block 322. The first pushing portion 412 is used to push the battery side plate towards the first baffle 411. The first baffle 411 has a first blocking surface for blocking a short side edge of the battery side plate. When positioning the battery side plate, the battery side plate is placed between the first baffle 411 and the first pushing portion 412. The first pushing portion 412 pushes the battery side plate towards the first baffle 411 and presses a short side of the battery side plate against the first blocking surface, thereby enabling the first positioning portion 41 to position the battery side plate in the length direction.

[0037] As Figure 5 shown, the first pushing portion 412 includes a first vertical plate 4121, a first pushing block 4122, a first pushing member 4123, and a first guiding portion 4124. The first vertical plate 4121 is disposed on the base 3. Specifically, the first vertical plate 4121 is disposed on the seat plate 31. The first pushing block 4122 is disposed on the side of the first vertical plate 4121 facing the first baffle 411. The first pushing member 4123 is disposed between the first vertical plate 4121 and the first pushing block 4122. The first pushing member 4123 is a helical spring, a shrapnel, or a soft elastic rubber segment. The first pushing member 4123 is used to push the first pushing block 4122 towards the first baffle 411. The first guiding portion 4124 is used to guide the movement of the first pushing block 4122. Before positioning the battery side plate, the first pushing block 4122 is squeezed towards the first vertical plate 4121. The first pushing block 4122 moves towards the first vertical plate 4121 and compresses the first pushing member 4123. Then, the battery side plate is placed between the first pushing block 4122 and the first baffle 411, and the first pushing block 4122 is released. The first pushing member 4123 resets and pushes the first pushing block 4122 towards the first baffle 411. The first pushing block 4122 can press a short side of the battery side plate against the first blocking surface of the first baffle 411. Under the guiding action of the first guiding portion 4124, the movement of the first pushing block 4122 is made more stable.

[0038] The first guiding portion 4124 includes a first guiding rod 4124a provided on the first vertical plate 4121 and extending toward the direction where the first baffle 411 is located, and a first guiding hole 4124b formed on the first pushing block 4122 at a position corresponding to the first guiding rod 4124a. The first guiding rod 4124a is inserted into the first guiding hole 4124b and is adapted to the first guiding hole 4124b. The first pushing block 4122 can be guided through the cooperation of the first guiding rod 4124a and the first guiding hole 4124b. It can be understood that the structure of the first guiding portion 4124 is not limited to the above description. For example, in some embodiments, the positions of the first guiding rod 4124a and the first guiding hole 4124b can be interchanged, that is, the first guiding rod 4124a is provided on the first pushing block 4122, and the first guiding hole 4124b is provided on the first vertical plate 4121.

[0039] The second positioning portion 42 includes a second baffle 421 and a second pushing portion 422. The second baffle 421 is provided on the base 3 and is located on the other side of the cooling block 322. The second pushing portion 422 is provided on one side of the cooling block 322 in a manner opposite to the second baffle 421. The second pushing portion 422 is used to push the battery side plate toward the second baffle 421. The second baffle 421 has a second blocking surface perpendicular to the first blocking surface, and the second blocking surface is used to block a long side edge of the battery side plate. When positioning the battery side plate, the battery side plate is placed between the second baffle 421 and the second pushing portion 422. The second pushing portion 422 pushes the battery side plate toward the second baffle 421 and presses a long side of the battery side plate against the second blocking surface, thereby realizing the positioning of the second positioning portion 42 on the battery side plate in the width direction.

[0040] Such as Figure 6As shown, the second pushing part 422 includes a second vertical plate 4221, a second pushing block 4222, a second pushing member 4223, and a second guiding part 4224. The second vertical plate 4221 is arranged on the base 3. Specifically, the second vertical plate 4221 is arranged on the seat plate 31. The second pushing block 4222 is arranged on the side of the second vertical plate 4221 facing the second baffle 421. The second pushing member 4223 is arranged between the second vertical plate 4221 and the second pushing block 4222. The second pushing member 4223 is a spiral spring, a shrapnel, or a soft elastic rubber section. The second pushing member 4223 is used to push the second pushing block 4222 towards the second baffle 421. The second guiding part 4224 is used to guide the movement of the second pushing block 4222. Before positioning the battery side plate, the second pushing block 4222 is squeezed towards the second vertical plate 4221. The second pushing block 4222 moves towards the second vertical plate 4221 and compresses the second pushing member 4223. Then, the battery side plate is placed between the second pushing block 4222 and the second baffle 421, and the second pushing block 4222 is released. The second pushing member 4223 resets and pushes the second pushing block 4222 towards the second baffle 421. The second pushing block 4222 can press one long side of the battery side plate against the second blocking surface of the second baffle 421. Under the guiding action of the second guiding part 4224, the movement of the second pushing block 4222 is made more stable.

[0041] The second guiding part 4224 includes a second guiding rod 4224a arranged on the second vertical plate 4221 and extending towards the direction where the second baffle 421 is located, and a second guiding hole 4224b formed at a position corresponding to the second guiding rod 4224a on the second pushing block 4222. The second guiding rod 4224a passes through the second guiding hole 4224b and is adapted to the second guiding hole 4224b. Through the cooperation of the second guiding rod 4224a and the second guiding hole 4224b, the second pushing block 4222 can be guided. It can be understood that the structure of the second guiding part 4224 is not limited to the above description. For example, in some embodiments, the positions of the second guiding rod 4224a and the second guiding hole 4224b can be interchanged, that is, the second guiding rod 4224a is arranged on the second pushing block 4222, and the second guiding hole 4224b is arranged on the second vertical plate 4221.

[0042] Such as Figure 2As shown in the figure, the lug positioning mechanism 5 includes a lug clamping mechanism 51, a clamping mechanism positioning part 52, a pressing mechanism 53 and the avoidance hole 54. The lug clamping mechanism 51 is used for clamping the lug. The clamping mechanism positioning part 52 is arranged on the base 3. Specifically, the clamping mechanism positioning part 52 is arranged on the seat plate 31. The clamping mechanism positioning part 52 is used for positioning the lug clamping mechanism 51 to limit the lug clamped in the lug clamping mechanism 51 at the predetermined welding position. The pressing mechanism 53 is used for pressing the lug clamping mechanism 51 to press the lug against the battery side plate. The avoidance hole 54 is formed on the lug clamping mechanism 51 and is adapted to the lug. When clamping the lug, the lug clamping mechanism 51 clamps the lug at the bottom end of the avoidance hole 54. The bottom end is the end of the avoidance hole 54 facing the battery side plate after the lug clamping mechanism 51 is assembled onto the clamping mechanism positioning part 52. Before welding, the lug is clamped at the bottom end of the avoidance hole 54 on the lug clamping mechanism 51, then the bottom end of the avoidance hole 54 is oriented towards the battery side plate and the lug clamping mechanism 51 is assembled onto the clamping mechanism positioning part 52. The clamping mechanism positioning part 52 positions the lug clamping mechanism 51 to limit the lug clamped in the lug clamping mechanism 51 at the predetermined welding position, and then the pressing mechanism 53 presses the lug clamping mechanism 51 to press the lug against the battery side plate, thus completing the positioning of the lug on the battery side plate. In this embodiment, at least two lug clamping mechanisms 51 are configured corresponding to one predetermined welding position. During the process of welding the lug and the battery side plate when one lug clamping mechanism 51 is assembled onto the clamping mechanism positioning part 52, it is possible to clamp the un-welded lug or release the lug that has been welded to the battery side plate on another lug clamping mechanism 51, enabling simultaneous human-machine operation and improving work efficiency.

[0043] As Figure 7 shown in the figure, the lug clamping mechanism 51 includes a clamping part 511 and a positioning plate 512. The clamping part 511 is used for clamping the lug. The positioning plate 512 is arranged on the clamping part 511. The positioning plate 512 is used for cooperating with the clamping mechanism positioning part 52 to position the lug clamping part 511. The lug is clamped by the clamping part 511. After the lug is clamped on the clamping part 511, the positioning plate 512 is assembled onto the clamping mechanism positioning part 52, thereby realizing the positioning of the lug by the lug positioning mechanism 5 on the battery side plate.

[0044] As Figure 7-9As shown, the clamping portion 511 includes a clamping block 5111, a pressure head 5112, a pushing portion 5113 and a blocking bar 5114 arranged on the positioning plate 512, and a mounting hole 5111a and a receiving hole 5111b are formed on the clamping block 5111, the mounting hole 5111a is adapted to the hanging ear, the mounting hole 5111a is used to install the hanging ear, the inner end of the receiving hole 5111b passes through the side wall of the mounting hole 5111a, and the outer end of the receiving hole 5111b passes through the outer surface of the clamping block 5111, the pressure head 5112 is arranged in the receiving hole 5111b, and the pushing portion 5113 is used to push the pressure head 5112 toward the mounting hole 5111a so that the pressure head 5112 presses the hanging ear installed in the mounting hole 5111a. When installing the hanging ear, the hanging ear is inserted into the mounting hole 5111a from the end of the mounting hole 5111a facing away from the positioning plate 512. After the hanging ear is installed in the mounting hole 5111a, the pushing portion 5113 pushes the pressing head 5112 toward the mounting hole 5111a, and the pressing head 5112 presses the hanging ear installed in the mounting hole 5111a. The pressing action of the pressing head 5112 can press and fix the hanging ear in the mounting hole 5111a, thereby realizing the clamping of the hanging ear by the clamping portion 511.

[0045] The pushing part 5113 includes a pressing plate 5113a, a pressing hole 5113b, a guide rod 5113c and an elastic member 5113d. The pressing plate 5113a is arranged on the pressing head 5112. The pressing plate 5113a is located outside the clamping block 5111. The pressing hole 5113b vertically penetrates through the pressing plate 5113a. One end of the guide rod 5113c is fixedly arranged on the clamping block 5111. The other end of the guide rod 5113c passes through the pressing hole 5113b outward to form a blocking head. The elastic member 5113d is a spiral spring or an elastic rubber column. One end of the elastic member 5113d abuts against the blocking head. The other end of the elastic member 5113d abuts against the pressing plate 5113a. When the elastic member 5113d presses the pressing plate 5113a against the clamping block 5111, the inner end of the pressing head 5112 penetrates into the mounting hole 5111a. When installing the hanging ear in the mounting hole 5111a, pull the pressing plate 5113a outward. The pressing plate 5113a slides on the guide rod 5113c and compresses the elastic member 5113d. The pressing head 5112 moves outward with the pressing plate 5113a in the receiving hole 5111b until one end of the pressing head 5112 facing the mounting hole 5111a completely enters the receiving hole 5111b. Then, the hanging ear can be installed into the mounting hole 5111a. After the hanging ear is installed in the mounting hole 5111a, release the pressing plate 5113a. Under the elastic action of the elastic member 5113d, the elastic member 5113d pushes the pressing plate 5113a inward. The pressing head 5112 moves inward with the pressing plate 5113a in the receiving hole 5111b and presses against the hanging ear installed in the mounting hole 5111a to clamp the hanging ear in the mounting hole 5111a. In this way, the clamping of the hanging ear by the clamping part 511 can be realized, which is more convenient when clamping the hanging ear.

[0046] The baffle bar 5114 is arranged on the side wall of the mounting hole 5111a. When the end of the hanging ear facing away from the positioning plate 512 of the mounting hole 5111a is assembled into the mounting hole 5111a and the welding plate of the hanging ear welded to the battery side plate abuts against the baffle bar 5114, the side of the welding plate facing away from the baffle bar 5114 is flush with the side of the clamping block 5111 facing away from the positioning plate 512. The baffle 5114 has a limiting function. When the hanging ear is inserted into the mounting hole 5111a from the end of the mounting hole 5111a that is away from the positioning plate 512, and the welding plate is pressed against the side of the baffle 5114 toward the baffle 5114, the hanging ear can be located at the correct installation position in the mounting hole 5111a, which is very convenient for installing the hanging ear in the mounting hole 5111a; the side of the welding plate that is away from the baffle 5114 is flush with the side of the clamping block 5111 that is away from the positioning plate 512, ensuring that when the clamping mechanism 53 presses the hanging ear clamping mechanism 51, the hanging ear can be pressed against the battery side plate. It can be understood that in some embodiments, the hanging ear is assembled into the mounting hole 5111a from one end of the mounting hole 5111a away from the positioning plate 512 and when the welding plate of the hanging ear welded to the battery side plate abuts against the baffle 5114, the side of the welding plate away from the baffle 5114 and can be protruding from the side of the clamping block 5111 away from the positioning plate 512 and parallel to the side of the clamping block away from the positioning plate 512. With this structure, it can also be ensured that when the clamping mechanism 53 presses the hanging ear clamping mechanism 51, the hanging ear can be pressed against the battery side plate.

[0047] The positioning plate 512 is formed with a through hole 5121 and two pin holes 5122; the through hole 5121 is formed at a position on the positioning plate 512 corresponding to the mounting hole 5111a, and the through hole 5121 vertically penetrates two side surfaces of the positioning plate 512, and the through hole 5121 and the mounting hole 5111a constitute the avoidance hole 54. It can be understood that in some embodiments, the pin holes 5122 can also be other numbers more than two.

[0048] like Figure 10As shown, the positioning part 52 of the clamping mechanism includes a fixing block 521 provided on the seat plate 31 and two pins 522. It can be understood that the number of the pins 522 can also be two or more other quantities, as long as there is a pin 522 corresponding to each pin hole 5122. The fixing block 521 is provided on the other side of the cooling block 322 in a manner opposite to the second baffle 421. One pin 522 is provided on the fixing block 521, and the other pin 522 is provided on the second baffle 421. When each pin hole 5122 is assembled on the corresponding pin 522, the lug clamped in the clamping part 511 is limited at the predetermined welding position. Through the cooperation of the pin holes 5122 and the pins 522, the positioning of the positioning plate 512 on the seat plate 31 can be realized, and further the positioning of the lug on the battery side plate can be realized. It can be understood that in some embodiments, the positioning part 52 of the clamping mechanism is not limited to the above-described structure. For example, in some embodiments, the positioning part 52 of the clamping mechanism may only include two pins 522, and the two pins 522 are directly fixed on the base 3 at the positions corresponding to the two pin holes 5122. With this structure, the positioning of the positioning plate 512 by the positioning part 52 of the clamping mechanism can also be realized.

[0049] As Figure 11 shown, the pressing mechanism 53 includes a rotary cylinder 531 provided on the seat plate 31, a cross plate 532 provided on the output shaft of the rotary cylinder 531, and a pressing block 533 provided on the cross plate 532. When the output shaft of the rotary cylinder 531 contracts, the output shaft of the rotary cylinder 531 rotates, rotates the pressing block 533 into the area where the positioning plate 512 is located and presses the positioning plate 512. When the output shaft of the rotary cylinder 531 extends, the output shaft of the rotary cylinder 531 rotates and drives the pressing block 533 to rotate out of the area where the positioning plate 512 is located. It can be understood that the pressing mechanism 53 is not limited to the above-described structure. For example, in some embodiments, the rotary cylinder 531 can also be replaced with a common telescopic cylinder, a hydraulic cylinder or a push rod motor.

[0050] The working principle of the battery side plate lug welding jig of the present invention is as follows:

[0051] Before welding the hanging ear and the battery side plate, the battery side plate is first positioned, the first push block 4122 is pressed toward the first vertical plate 4121, the first push block 4122 moves toward the first vertical plate 4121 and compresses the first push member 4123, and then the battery side plate is placed between the first push block 4122 and the first baffle plate 411 and the first push block 4122 is released, the first push member 4123 is reset and pushes the first push block 4122 toward the first baffle plate 411, and the first push block 4122 can press a short side of the battery side plate against the first baffle plate 411. The second push block 4222 is pressed toward the second vertical plate 4221 at the same time, and the second push block 4222 moves toward the second vertical plate 4221 and compresses the second pushing member 4223. The battery side plate is also located between the second push block 4222 and the second baffle plate 421. The second push block 4222 is released, and the second pushing member 4223 is reset and pushes the second push block 4222 toward the second baffle plate 421. The second push block 4222 can press one long side of the battery side plate on the second blocking surface of the second baffle plate 421, thereby completing the positioning of the battery side plate. Then, the hanging ear is clamped on the hanging ear clamping mechanism 51, and the pressing plate 5113a is pulled outward. The pressing plate 5113a slides on the guide rod 5113c and compresses the elastic member 5113d. The pressing head 5112 moves outward in the accommodating hole 5111b along with the pressing plate 5113a until the pressing head 5112 completely enters the accommodating hole 5111b at one end facing the mounting hole 5111a. Then, the hanging ear is assembled into the mounting hole 5111a from the end of the mounting hole 5111a away from the positioning plate 512 and the hanging ear is used for The welding plate welded on the battery side plate is against the baffle bar 5114. After the hanging ear is installed in the mounting hole 5111a, the pressure plate 5113a is released. Under the elastic action of the elastic member 5113d, the elastic member 5113d pushes the pressure plate 5113a inward, and the pressure head 5112 moves inward with the pressure plate 5113a in the accommodating hole 5111b and presses on the hanging ear installed in the mounting hole 5111a to clamp the hanging ear in the mounting hole 5111a, thereby completing the clamping of the hanging ear by the hanging ear clamping mechanism 51. Then, the ear-hanging clamping mechanism 51 with the ear-hanging clamping is assembled on the clamping mechanism positioning part 52, and each of the pin holes 5122 on the positioning plate 512 is assembled on the corresponding pins 522, so that the positioning part 52 of the clamping mechanism positions the ear-hanging clamping mechanism 51, so that the ear-hanging clamping mechanism 51 is limited to the predetermined welding position, and then the positioning plate 512 is pressed by the pressing mechanism 53 to press the ear-hanging clamping mechanism on the battery side plate. Then, the laser welder can be used to weld the positioned ear-hanging clamping mechanism 51 on the battery side plate.

[0052] The above embodiments merely represent the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A welding jig for battery side plate lugs, which is used to position the lugs at a predetermined welding position on the battery side plate, and is characterized in that: The invention comprises a base for carrying the battery side plate, a battery side plate positioning mechanism provided on the base and used for positioning the battery side plate, and a hook positioning mechanism for pressing the hook at the predetermined welding position; the hook positioning mechanism is formed with an avoidance hole for the laser of the laser welding machine to penetrate into the predetermined welding position; the hook positioning mechanism comprises a hook clamping mechanism for clamping the hook, a clamping mechanism positioning portion provided on the base and used for positioning the hook clamping mechanism so as to limit the hook clamped in the hook clamping mechanism to the predetermined welding position, and a pressing mechanism for pressing the hook clamping mechanism so as to press the hook against the battery side plate, the avoidance hole being formed on the hook clamping mechanism and being matched with the hook, and when clamping the hook, the hook clamping mechanism clamps the hook at the bottom end of the avoidance hole; The ear-hanging clamping mechanism includes a clamping portion for clamping the ear and a positioning plate provided on the clamping portion and used to cooperate with the positioning portion of the clamping mechanism to position the ear-hanging clamping portion. The clamping portion includes a clamping block provided on the positioning plate, a mounting hole adapted to the ear and used to install the ear, and a receiving hole whose inner end passes through the side wall of the mounting hole and whose outer end passes through the outer surface of the clamping block. The clamping portion also includes a pressing head provided in the receiving hole and a pushing portion for pushing the pressing head toward the mounting hole so that the pressing head presses the ear installed in the mounting hole. A through hole is formed on the positioning plate at a position corresponding to the mounting hole and vertically passes through both sides thereof, and the through hole and the mounting hole constitute the avoidance hole.

2. The battery side plate lug welding jig according to claim 1, characterized in that: At least two pin holes are formed on the positioning plate; the positioning portion of the clamping mechanism includes pins arranged on the base corresponding to the positions of each pin hole and adapted to the pin holes. When each pin hole is assembled on the corresponding pin, the hanging ear clamped in the clamping portion is confined to the predetermined welding position.

3. The battery side plate lug welding jig according to claim 1, characterized in that: The pushing portion includes a pressing plate provided on the pressing head and located outside the clamping block, a pressing hole vertically penetrating the pressing plate, a guide rod with one end fixed on the clamping block and the other end passing through the pressing hole outward to form a blocking head, and an elastic member with one end abutting the blocking head and the other end abutting the pressing plate. When the elastic member presses the pressing plate onto the clamping block, the inner end of the pressing head penetrates into the mounting hole.

4. The battery side plate lug welding jig according to claim 1, wherein: The hanging ear includes a welding plate for welding to the battery side plate; the clamping portion also includes a baffle arranged on the side wall of the mounting hole. When the hanging ear is assembled into the mounting hole from one end of the mounting hole facing away from the positioning plate and the welding plate abuts against the baffle, the side of the welding plate facing away from the baffle is flush with the side of the clamping block facing away from the positioning plate, or the side of the welding plate facing away from the baffle protrudes from the side of the clamping block facing away from the positioning plate and is parallel to the side of the clamping block facing away from the positioning plate.

5. The battery side plate lug welding fixture according to claim 1, wherein: The battery side plate positioning mechanism includes a first positioning portion for positioning the length direction of the battery side plate and a second positioning portion for positioning the width direction of the battery side plate.

6. The battery side plate lug welding fixture according to claim 5, wherein: The first positioning portion includes a first baffle provided on the base and a first pushing portion for pushing the battery side plate toward the first baffle. The first baffle has a first blocking surface for blocking a short side edge of the battery side plate. The second positioning portion includes a second baffle provided on the base and a second pushing portion for pushing the battery side plate toward the second baffle. The second baffle has a second blocking surface perpendicular to the first blocking surface and for blocking a long side edge of the battery side plate.

7. The battery side plate lug welding jig according to claim 6, characterized in that: The first pushing portion includes a first vertical plate provided on the base, a first pushing block provided on a side of the first vertical plate facing the first baffle, a first pushing member provided between the first vertical plate and the first pushing block and for pushing the first pushing block toward the first baffle, and a first guiding portion for guiding the movement of the first pushing block. The second pushing portion includes a second vertical plate provided on the base, a second pushing block provided on a side of the second vertical plate facing the second baffle, a second pushing member provided between the second vertical plate and the second pushing block and for pushing the second pushing block toward the second baffle, and a second guiding portion for guiding the movement of the second pushing block.

8. The battery side plate lug welding fixture according to claim 1, characterized in that: The base includes a seat plate and a support cooling portion provided on the upper surface of the seat plate corresponding to the predetermined welding position and for supporting and cooling the battery side plate. The support cooling portion includes a support block provided on the seat plate and a cooling block provided on the support block. The cooling block includes a cooling block body, a cooling medium channel formed in the cooling block body, a cooling medium inlet formed on the surface of the cooling block body and for supplying cooling medium to the cooling medium channel, and a cooling medium outlet formed on the surface of the cooling block body and for discharging the cooling medium in the cooling medium channel.

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