A battery tab welding positioning device

Abstract

The application discloses a battery connecting piece welding positioning device and belongs to the technical field of battery connecting piece welding. The device comprises a body assembly, a clamping positioning mechanism and a driving mechanism. The body assembly comprises an operation table. A welding device is installed on the operation table. An air cooling assembly is installed at the position of a welding head of the welding device. The clamping positioning mechanism comprises a pair of bionic clamping jaws. Each of the bionic clamping jaws comprises a bionic contact layer, an intermediate layer and an inner layer. The bionic contact layer is provided with a heat absorption assembly. The inner layer is provided with a heat dissipation assembly. When the battery connecting piece is welded, the heat is absorbed by the heat absorption assembly and then transferred to the heat dissipation assembly for treatment. The welding device is provided with an air cooling assembly. Through the synergistic effect of the air cooling assembly and the heat absorption assembly, the temperature during the welding of the battery connecting piece is effectively reduced, the safety during the welding is ensured, and the performance of the battery connecting piece will not be affected by the welding.

Description

Technical Field

[0001] This invention belongs to the field of battery connector welding technology, and specifically relates to a battery connector welding positioning device. Background Technology

[0002] Welding equipment refers to the equipment required to perform welding processes. In the battery module manufacturing industry, battery connectors must first be assembled onto the battery module, and then laser welding equipment is used to weld the battery connectors.

[0003] Regarding the battery connector welding and positioning method disclosed in CN119016874A, the interaction between the dual-axis motor, threaded rod, L-shaped rod, and connecting vertical plate can drive two clamping plates to move closer together, thereby achieving the clamping and positioning effect on the left and right ends of the battery module placed on the processing table. During the process of driving the two clamping plates to move closer together, the fixed plate, L-shaped plate II, gear, toothed plate, worm, and worm wheel can drive the rotating shaft to rotate. The rotation of the rotating shaft, under the action of the cam, can drive the two corresponding clamping plates II on the front and rear sides to move closer together, thereby achieving the clamping and positioning effect on the front and rear ends of the battery module.

[0004] The battery connector welding and positioning device provided by the above patent has a complex clamping and positioning process for the battery module, which requires step-by-step operation, resulting in low clamping and positioning efficiency and high equipment maintenance costs. At the same time, its clamping force is uncontrollable, which may cause damage to the battery module during clamping. Furthermore, a large amount of heat is generated during the welding of the battery connector, and it is impossible to effectively cool down the battery module and battery connector during welding, which poses safety hazards and affects the performance of the battery connector.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a battery connector welding and positioning device, which can solve the problems of cumbersome operation, low clamping and positioning efficiency, and high equipment maintenance costs when clamping and positioning battery modules; at the same time, it can also solve the problem that the clamping force of existing clamping devices is uncontrollable and easily damages the battery module when clamping; and solve the problem that it is not convenient to cool down during battery connector welding, which leads to safety hazards.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution:

[0008] A battery connector welding and positioning device, comprising:

[0009] The main body component includes an operating table, on which a welding device is mounted. An air-cooling component is mounted at the welding head of the welding device, so that the air-cooling component can move with the welding device, thereby improving the cooling effect of the air-cooling component on the welding position.

[0010] The clamping and positioning mechanism includes a pair of bionic grippers for clamping and fixing the battery module. Each pair of bionic grippers includes a bionic contact layer, a middle layer, and an inner layer. The bionic contact layer has a receiving chamber. The middle layer and inner layer are sequentially installed within the receiving chamber of the bionic contact layer, thus forming the bionic grippers and allowing direct contact between the bionic contact layer and the battery module. A heat-absorbing component is located within the side panel of the bionic contact layer used to clamp the battery module. When the bionic contact layer clamps the battery module, heat is absorbed by the heat-absorbing component during welding of battery connectors, effectively reducing the temperature of the battery module and battery connectors during welding and ensuring welding safety. The intermediate layer is located near the heat-absorbing component and is used to adjust the hardness of the bionic gripper. Since battery modules have varying degrees of hardness, the intermediate layer allows for adjustment of the contact hardness of the bionic gripper when clamping battery modules of different hardnesses, improving the clamping effect and preventing damage. The inner layer contains a heat dissipation component and a localized deformation component. The heat dissipation component processes the heat transferred through the bionic contact layer and intermediate layer, realizing the heat absorption and dissipation process during welding, ensuring that the heat-absorbing component can continuously and stably absorb and process the welding heat. The localized phase change component achieves localized deformation of the bionic gripper through air pressure regulation, allowing the bionic gripper to adapt to clamping curved or irregularly shaped connecting pieces, improving the practicality of the device.

[0011] The driving mechanism includes a guide slide rail, which is opened on the operating table. A pair of driving sliders are slidably connected in the guide slide rail. A pair of bionic grippers are respectively installed on the pair of driving sliders. The bionic grippers are moved by the sliding of the driving sliders in the guide slide rail, so that the bionic grippers can clamp and position the battery module.

[0012] In one or more embodiments of the present invention, a plurality of support columns are fixedly connected to the operating platform, and mounting platforms are installed on the plurality of support columns. The welding device is installed at the bottom of the mounting platform, and its movement during welding is driven by a drive structure. The air-cooling assembly includes a plurality of first gas supply pipes for supplying nitrogen gas. A first mounting ring is installed on the side wall of the welding device, and the plurality of first gas supply pipes are installed at equal intervals on the first mounting ring. Cooling nozzles are installed at the bottom of each of the plurality of first gas supply pipes. While the air-cooling assembly supplies nitrogen gas to cool the welding point, the nitrogen gas can isolate the oxygen around the welding position, thereby ensuring that the welding point does not oxidize during welding and improving the welding quality. At the same time, the position of the cooling nozzles can be adjusted so that the angle can be adjusted during use, improving their effectiveness.

[0013] In one or more embodiments of the present invention, the biomimetic contact layer is composed of a composite of an elastomer and a thermally conductive material. The elastomer of the biomimetic contact layer is high-wear-resistant, thermally conductive silicone, and the thermally conductive material includes one or more combinations of aluminum nitride and graphene. This biomimetic contact layer, composed of the elastomer and thermally conductive material, enables rapid heat conduction during welding while simultaneously clamping and fixing the battery module. A biomimetic microtexture is integrally formed on the outer wall of the biomimetic contact layer on the side clamping the battery module. This microtexture enhances friction and reduces the risk of scratches when the biomimetic grippers clamp the battery module. A mounting base is installed on the side of the biomimetic contact layer away from the microtexture. The mounting base provides support and fixation for the biomimetic grippers, ensuring structural stability.

[0014] In one or more embodiments of the present invention, the heat-absorbing component includes a heat-absorbing channel formed within a wall panel on the side of the biomimetic contact layer that holds the battery module. The heat-absorbing channel is formed along its long side within the biomimetic contact layer and is configured as a ring structure. The heat-absorbing channel is filled with a heat-absorbing phase change material, which is a composite material of paraffin wax and expanded graphite. By providing a heat-absorbing component on the side of the biomimetic contact layer that contacts the battery module, the heat generated during welding can be quickly absorbed by the heat-absorbing component within the biomimetic contact layer, thereby reducing the temperature of the battery module during welding and ensuring the safety of the battery module during welding.

[0015] In one or more embodiments of the present invention, the intermediate layer is composed of an elastomer material, a thermally conductive material, and a magnetorheological elastomer. The elastomer material of the intermediate layer is a high-wear-resistant, thermally conductive silicone, and the thermally conductive material of the biomimetic contact layer includes one or more combinations of aluminum nitride and graphene. This allows the intermediate layer to have good thermal conductivity while being deformable, and the magnetorheological elastomer accounts for 20% to 40% of the intermediate layer material, ensuring a significant magnetic field response. The magnetorheological elastomer is a magnetic particle, which includes one or more combinations of micron-sized iron powder, carbonyl iron powder, and iron(III) oxide. Under the action of an external magnetic field, the magnetorheological elastomer responds, enhancing the magnetic dipole interaction force between particles, significantly improving the shear modulus and hardness of the material, thereby achieving adjustment of the hardness of the intermediate layer, and further achieving adjustment of the hardness of the biomimetic gripper. This allows the biomimetic gripper to adjust its own hardness according to the hardness of the battery module during use.

[0016] In one or more embodiments of the present invention, the inner layer is composed of an elastomer material and a thermally conductive material. The elastomer material of the inner layer is a thermally conductive silicone rubber material, and the thermally conductive material of the inner layer includes one or more combinations of aluminum nitride and graphene, so that the inner layer has good thermal conductivity and the ability to deform.

[0017] In one or more embodiments of the present invention, the heat dissipation assembly includes a fluid channel formed within an inner layer. The fluid channel is formed along its long side within the inner layer. Both the inlet and outlet of the fluid channel are located on the sidewall of the inner layer. An inlet pipe is installed on the inlet of the fluid channel, and a flow regulating valve is installed on the inlet pipe. An outlet pipe is installed on the outlet of the fluid channel. By supplying coolant into the fluid channel, the coolant, as it flows within the fluid channel, can dissipate and absorb the heat absorbed by the heat-absorbing component within the biomimetic contact layer, thereby enabling the heat-absorbing component to continuously absorb the heat generated during welding.

[0018] In one or more embodiments of the present invention, the local deformation component includes multiple airbag chambers arranged in an array within the inner layer. These airbag chambers are sequentially arranged between the pipes of the fluid channel. The airbag chambers are arranged along the thickness direction within the inner layer. A second air supply pipe is installed on the air inlet of each airbag chamber. The end of the second air supply pipe away from the airbag chamber passes through the bionic contact layer and the mounting base sequentially and is positioned outside the mounting base. A distribution chamber is installed at the end of the second air supply pipe positioned outside the mounting base. A solenoid valve is installed on the pipe of the second air supply pipe positioned outside the mounting base. When high-pressure gas is supplied to the airbag chambers, the area of ​​the airbag chambers can deform through expansion under the action of the high-pressure gas, thereby causing local deformation of the bionic gripper and achieving adjustment of the local shape of the bionic gripper. Furthermore, each airbag chamber is equipped with an independent solenoid valve. Therefore, when the bionic gripper holds irregularly shaped battery modules, the control system can adjust the shape of the corresponding area by controlling the corresponding solenoid valve according to the shape of the battery module. The air pressure inside the airbag chamber is controlled at 0.1~0.5MPa to ensure that the deformation of the airbag chamber is within the elastic range of the bionic gripper, while also ensuring the gripping force on the battery module.

[0019] In one or more embodiments of the present invention, a filter assembly is provided at the front end of the air inlet of the distribution chamber. The filter assembly includes a filter device housing, and a first filter screen and a second filter screen are detachably installed sequentially inside the filter device housing. The pore size of the first filter screen is larger than that of the second filter screen. A first air inlet pipe is installed on the air inlet of the filter device housing, and a pressure regulating valve is installed on the first air inlet pipe. To prevent impurities from being carried into the airbag chamber and causing blockage of the pipeline, a filter assembly is provided to filter the gas entering the airbag chamber.

[0020] In one or more embodiments of the present invention, a pair of linear motors are installed at the bottom of the operating platform. Each pair of linear motors drives a pair of drive sliders to slide within the guide rails. The reciprocating movement of the bionic gripper, driven by the pair of linear motors, effectively simplifies the drive mechanism of the bionic gripper, while ensuring precise response during gripping and improving the positioning accuracy of the battery module. A second mounting ring is fixedly connected to the upper end of the drive slider. The mounting base is mounted on the second mounting ring, and multiple fixing bolts are threaded between the second mounting ring and the mounting base, providing support and fixation for the mounting base via the second mounting ring. An electromagnetic coil is installed inside the second mounting ring. Through the action of the electromagnetic coil, an external magnetic field is provided to the intermediate layer, thereby adjusting the hardness of the bionic gripper. An air supply groove is provided inside the drive slider. A pair of blowing nozzles are installed on the two side walls of the reciprocating drive slider. Both blowing nozzles are connected to the air supply groove. The pair of blowing nozzles are used to blow the guide rails and the linear motor tracks, respectively. A second air inlet pipe is installed on the air inlet of each blowing nozzle. When the drive slider moves, the blowing nozzle can spray blowing gas into the guide rail and linear motor, which avoids welding impurities remaining in the track and affecting the movement of the bionic gripper.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. This invention simplifies the clamping and positioning process of battery modules by using a linear motor to drive the clamping and positioning mechanism, thereby effectively improving the efficiency of clamping and positioning battery modules, and reducing the maintenance cost of the equipment by simplifying the equipment components.

[0023] 2. This invention provides a bionic gripper composed of a bionic contact layer, a middle layer, and an inner layer. The bionic contact layer is provided with bionic microtextures, which effectively avoids damage to the battery module when the bionic gripper is clamped. Furthermore, the middle layer is provided with a magnetorheological elastomer, which allows for adjustment of the hardness of the bionic gripper under the action of an external magnetic field. This enables the bionic gripper to adjust the hardness of the gripper when clamping and positioning battery modules of different hardness, further preventing damage to the battery module when clamping.

[0024] 3. This invention incorporates a heat-absorbing component in the biomimetic contact layer and a heat-dissipating component in the inner layer. This allows the heat generated during the welding of the battery connector to be absorbed by the heat-absorbing component and transferred to the heat-dissipating component for processing. Furthermore, an air-cooling component is incorporated into the welding device. Through the synergistic effect of the air-cooling component and the heat-absorbing component, the temperature during the welding of the battery connector is effectively reduced, ensuring safety during welding and preventing the performance of the battery connector from being affected by the welding process. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of a battery connector welding and positioning device according to an embodiment of the present invention;

[0027] Figure 2 This is a right view of a battery connector welding and positioning device according to an embodiment of the present invention;

[0028] Figure 3 This is a perspective view of a battery connector welding and positioning device according to an embodiment of the present invention;

[0029] Figure 4 This is a cross-sectional view of a battery connector welding and positioning device according to an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of a battery connector welding and positioning device according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the clamping and positioning mechanism in this invention;

[0032] Figure 7 This is a cross-sectional view of the clamping and positioning mechanism in this invention;

[0033] Figure 8 For the present invention Figure 5 A schematic diagram at point A in the middle;

[0034] Figure 9 For the present invention Figure 5 A schematic diagram at point B in the middle;

[0035] Figure 10 This is a cross-sectional view of the biomimetic contact layer in this invention;

[0036] Figure 11 This is a cross-sectional view of the intermediate layer in this invention;

[0037] Figure 12 This is a cross-sectional view of the inner layer in this invention;

[0038] Figure 13 This is a schematic diagram of the air-cooled component in this invention.

[0039] Explanation of key figure labels:

[0040] 1-Main body assembly, 11-Operating table, 12-Support column, 13-Mounting platform, 14-Welding device, 15-First mounting ring, 16-First gas supply pipe, 17-Cooling nozzle, 2-Clamping and positioning mechanism, 21-Bionic contact layer, 22-Intermediate layer, 23-Inner layer, 24-Heat absorption channel, 25-Heat absorption phase change material, 26-Bionic microtexture, 27-Magnetorheological elastomer, 28-Fluid channel, 29-Inlet pipe, 210-Outlet pipe, 211-Flow regulating valve, 212-Gas 213-Second air supply pipe, 214-Solenoid valve, 215-Distribution chamber, 216-Filter device housing, 217-First filter screen, 218-Second filter screen, 219-First air inlet pipe, 220-Pressure regulating valve, 221-Mounting base, 3-Drive mechanism, 31-Guide slide rail, 32-Drive slider, 33-Linear motor, 34-Second mounting ring, 35-Solenoid coil, 36-Fixing bolt, 37-Air supply groove, 38-Purge nozzle, 39-Second air inlet pipe. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0042] like Figures 1-5 As shown, a battery connector welding and positioning device according to an embodiment of the present invention includes a body assembly 1, a clamping and positioning mechanism 2, and a driving mechanism 3.

[0043] like Figures 1-5 As shown, the main body component 1 includes an operating table 11, on which a welding device 14 is installed. An air-cooling component is installed at the welding head position of the welding device 14, so that the air-cooling component can move with the welding device 14, thereby improving the cooling effect of the air-cooling component on the welding position.

[0044] like Figure 2 and Figure 13As shown, multiple support columns 12 are fixedly connected to the operating table 11, and mounting platforms 13 are installed on the support columns 12. A welding device 14 is installed at the bottom of the mounting platform 13, and its movement during welding is driven by a drive structure. The air-cooling assembly includes multiple first gas supply pipes 16 for supplying nitrogen gas. A first mounting ring 15 is installed on the side wall of the welding device 14, and the multiple first gas supply pipes 16 are equally spaced on the first mounting ring 15. Cooling nozzles 17 are installed at the bottom of each of the multiple first gas supply pipes 16. While the air-cooling assembly supplies nitrogen gas to cool the welding point, the nitrogen gas also isolates the oxygen around the welding position, ensuring that the welding point does not oxidize during welding and improving the welding quality. Simultaneously, the cooling nozzles 17 can be adjusted in position to change their angle during use, improving their effectiveness.

[0045] like Figures 1-5 As shown, the clamping and positioning mechanism 2 includes a pair of bionic grippers, which clamp and fix the battery module. Each pair of bionic grippers includes a bionic contact layer 21, a middle layer 22, and an inner layer 23. The bionic contact layer 21 has a receiving cavity. The middle layer 22 and the inner layer 23 are sequentially installed within the receiving cavity of the bionic contact layer 21, thus forming the bionic grippers and allowing direct contact between the bionic contact layer 21 and the battery module. A heat-absorbing component is provided within the side panel of the bionic contact layer 21 used to clamp the battery module. When the bionic contact layer 21 clamps the battery module, heat can be absorbed by the heat-absorbing component during welding of battery connectors on the battery module, effectively reducing the temperature of the battery module and battery connectors during welding and ensuring welding safety. The intermediate layer 22 is located near the heat-absorbing component and is used to adjust the hardness of the bionic gripper. Since battery modules have varying degrees of hardness, the intermediate layer 22 allows for adjustment of the gripping hardness of the bionic gripper when holding battery modules of different hardnesses, improving the gripping effect and preventing damage. The inner layer 23 houses a heat dissipation component and a localized deformation component. The heat dissipation component processes the heat transferred through the bionic contact layer 21 and the intermediate layer 22, realizing the heat absorption and dissipation process during welding, ensuring the heat-absorbing component can continuously and stably absorb and process the welding heat. The localized phase change component achieves localized deformation of the bionic gripper through air pressure regulation, allowing the bionic gripper to adapt to gripping curved or irregularly shaped connecting pieces, improving the practicality of the device.

[0046] like Figure 3 and Figure 7As shown, the biomimetic contact layer 21 is composed of a composite of an elastomer and a thermally conductive material. The elastomer of the biomimetic contact layer 21 is a highly wear-resistant and thermally conductive silicone, while the thermally conductive material includes one or more combinations of aluminum nitride and graphene. This gives the biomimetic contact layer 21 excellent wear resistance and suitability for use under high-temperature conditions. The biomimetic contact layer 21, composed of the elastomer and thermally conductive materials, enables rapid heat conduction during welding while simultaneously clamping and fixing the battery module. A biomimetic microtexture 26 is integrally formed on the outer wall of the side of the biomimetic contact layer 21 that clamps the battery module. The biomimetic microtexture 26 enhances friction and reduces the risk of scratches when the biomimetic grippers clamp the battery module. A mounting base 221 is installed on the side of the biomimetic contact layer 21 away from the biomimetic microtexture 26. The mounting base 221 is used to fix and support the biomimetic grippers, ensuring structural stability.

[0047] like Figure 7 and Figure 10 As shown, the heat-absorbing component includes a heat-absorbing channel 24, which is formed within the wall panel on the side of the bionic contact layer 21 that holds the battery module. The heat-absorbing channel 24 is formed along the long side of the bionic contact layer 21 and is configured as a ring structure. The heat-absorbing channel 24 is filled with a heat-absorbing phase change material 25, which is a composite material of paraffin and expanded graphite. By setting the heat-absorbing component on the side of the bionic contact layer 21 that contacts the battery module, the heat during welding can be quickly absorbed by the heat-absorbing component in the bionic contact layer 21, thereby reducing the temperature of the battery module during welding and ensuring the safety of the battery module during welding.

[0048] like Figure 7 and Figure 11 As shown, the intermediate layer 22 is composed of an elastomer, a thermally conductive material, and a magnetorheological elastomer 27. The elastomer material of the intermediate layer 22 is a high-wear-resistant, thermally conductive silicone, and the thermally conductive material of the biomimetic contact layer 21 includes one or more combinations of aluminum nitride and graphene. This allows the intermediate layer 22 to have good thermal conductivity while also being deformable. Furthermore, the magnetorheological elastomer 27 accounts for 20% to 40% of the material in the intermediate layer 22, ensuring a significant magnetic field response. The magnetorheological elastomer 27 consists of magnetic particles, including one or more combinations of micron-sized iron powder, carbonyl iron powder, and iron(III) oxide. Under the influence of an external magnetic field, the magnetorheological elastomer 27 responds, enhancing the magnetic dipole interaction force between particles, significantly increasing the shear modulus and hardness of the material, thereby adjusting the hardness of the intermediate layer 22, and consequently, adjusting the hardness of the biomimetic gripper. This allows the biomimetic gripper to adjust its own hardness according to the hardness of the battery module during use.

[0049] Preferably, the inner layer 23 is composed of an elastomer material and a thermally conductive material. The elastomer material of the inner layer 23 is a thermally conductive silicone rubber material, and the thermally conductive material of the inner layer 23 includes one or more combinations of aluminum nitride and graphene, so that the inner layer 23 has good thermal conductivity and the ability to deform.

[0050] like Figure 7 and Figure 12 As shown, the heat dissipation assembly includes a fluid channel 28, which is formed within the inner layer 23 along its long side. The inlet and outlet of the fluid channel 28 are both located on the sidewall of the inner layer 23. An inlet pipe 29 is installed on the inlet of the fluid channel 28, and a flow regulating valve 211 is installed on the inlet pipe 29. An outlet pipe 210 is installed on the outlet of the fluid channel 28. By supplying coolant to the fluid channel 28, the coolant can dissipate and absorb the heat absorbed by the heat-absorbing component in the biomimetic contact layer 21 as it flows within the fluid channel 28, thus enabling the heat-absorbing component to continuously absorb the heat from welding.

[0051] like Figure 5 and Figure 7 As shown, the local deformation component includes multiple airbag chambers 212, which are arranged in an array within the inner layer 23. The multiple airbag chambers 212 are sequentially arranged between the pipes of the fluid channel 28. The multiple airbag chambers 212 are arranged along the thickness direction within the inner layer 23. A second air supply pipe 213 is installed on the air inlet of the multiple airbag chambers 212. The end of the second air supply pipe 213 away from the airbag chamber 212 passes through the bionic contact layer 21 and the mounting base 221 in sequence and is located on the outside of the mounting base 221. A distribution chamber 215 is installed on the end of the second air supply pipe 213 located on the outside of the mounting base 221. A solenoid valve 214 is installed on the pipe of the second air supply pipe 213 located on the outside of the mounting base 221. When high-pressure gas is supplied into the airbag chamber 212, the area of ​​the airbag chamber 212 expands and deforms under the action of the high-pressure gas, thereby causing local deformation of the bionic gripper and achieving local shape adjustment of the bionic gripper. Furthermore, each airbag chamber 212 is equipped with an independent solenoid valve 214. Therefore, when the bionic gripper clamps an irregularly shaped battery module, the control system can control the corresponding solenoid valve 214 to adjust the shape of the corresponding area according to the shape of the battery module. The air pressure inside the airbag chamber 212 is controlled at 0.1~0.5MPa to ensure that the deformation of the airbag chamber 212 is within the elastic range of the bionic gripper, while also ensuring the clamping force on the battery module.

[0052] like Figure 5 Combination Figure 8As shown, a filter assembly is provided at the front end of the air inlet of the distribution chamber 215. The filter assembly includes a filter housing 216, within which a first filter screen 217 and a second filter screen 218 are detachably installed in sequence. The pore size of the first filter screen 217 is larger than that of the second filter screen 218. A first air inlet pipe 219 is installed on the air inlet of the filter housing 216, and a pressure regulating valve 220 is installed on the first air inlet pipe 219. To prevent impurities from being carried into the airbag chamber 212 and causing blockage of the pipeline, a filter assembly is provided to filter the air entering the airbag chamber 212.

[0053] like Figures 1-5 As shown, the drive mechanism 3 includes a guide slide rail 31, which is opened on the operating table 11. A pair of drive sliders 32 are slidably connected in the guide slide rail 31. A pair of bionic grippers are respectively installed on the pair of drive sliders 32. The bionic grippers are driven to move by the sliding of the drive sliders 32 in the guide slide rail 31, so that the bionic grippers can clamp and position the battery module.

[0054] like Figure 5 Combination Figure 9 As shown, a pair of linear motors 33 are installed at the bottom of the operating platform 11. These linear motors 33 drive a pair of drive sliders 32 to slide within the guide rail 31. The reciprocating movement of the bionic gripper, driven by the linear motors 33, effectively simplifies the drive mechanism of the bionic gripper, while ensuring precise action during gripping and improving the positioning accuracy of the battery module. A second mounting ring 34 is fixedly connected to the upper end of the drive slider 32. The mounting base 221 is mounted on the second mounting ring 34, and multiple fixing bolts 36 are threaded between the second mounting ring 34 and the mounting base 221, providing support and fixation for the mounting base 221. An electromagnetic coil 35 is installed inside the second mounting ring 34. Through the action of the electromagnetic coil 35, an external magnetic field is provided to the intermediate layer 22, thereby adjusting the hardness of the bionic gripper. The drive slider 32 has an air supply groove 37 inside. A pair of purge nozzles 38 are installed on the two side walls of the reciprocating drive slider 32. Both purge nozzles 38 are connected to the air supply groove 37. The purge nozzles 38 are used to purge the guide rail 31 and the linear motor 33's tracks, respectively. A second air inlet pipe 39 is installed on the air inlet of the purge nozzles 38. This allows the drive slider 32 to spray purge gas onto the guide rail 31 and the linear motor 33 through the purge nozzles 38 as it moves, preventing welding impurities from remaining in the tracks and affecting the movement of the bionic gripper.

[0055] It should be noted that, in order to achieve semi-automatic or automatic control during the use of the positioning device, a system for controlling the device is set up. The control system is a mature technology in the prior art and will not be described in detail here. At the same time, in order to facilitate the clamping and positioning of the battery module, a robotic arm for moving the battery module can be installed on the operating table 11, and the robotic arm assists in the clamping and positioning of the battery module.

[0056] In use, the battery module is moved between a pair of bionic grippers by a robotic arm, and then the pair of bionic grippers are moved by a linear motor 33 so that the pair of bionic grippers clamp and position the battery module on both sides, thereby fixing the battery module. Then the battery connecting pieces can be welded on the battery module by the welding device 14.

[0057] When the bionic gripper holds the battery module, if the battery module has high hardness, an external magnetic field is applied to the intermediate layer 22 through the electromagnetic coil 35. Under the action of the magnetic field, the magnetorheological elastomer 27 responds, enhancing the magnetic dipole interaction force between particles and significantly improving the shear modulus and hardness of the material. This allows for adjustment of the hardness of the bionic gripper and improves the gripping and positioning effect of the bionic gripper on the battery module. If the battery module has an irregular shape, the bionic gripper fixes the position of the battery module, and the control system controls the corresponding solenoid valve 214 to actuate, causing the air chamber 212 to inflate and locally deform the bionic gripper, so that the bionic gripper matches the irregular battery module and improves the gripping and positioning effect of the battery module.

[0058] When the welding device 14 welds the battery module, the air-cooling component on the welding device 14 releases nitrogen gas around the welding position through the cooling nozzle 17. The nitrogen gas cools the welding point and isolates the welding point from the outside oxygen, improving the welding effect. The heat transferred to the battery module during welding is absorbed by the heat-absorbing component in the bionic contact layer 21. After absorbing the heat, the heat-absorbing component transfers the heat through the intermediate layer 22 to the inner layer 23. Then, the heat is absorbed and processed by the heat dissipation component in the inner layer 23. This allows the heat-absorbing component in the bionic contact layer 21 to continuously absorb the heat of the battery module, ensuring welding safety while preventing the battery connector from being affected by high temperature.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A battery connector welding and positioning device, characterized in that, include: The main body assembly includes an operating table, on which a welding device is mounted. The welding device has an air-cooling assembly mounted at the welding head. The air-cooling assembly includes a plurality of first air supply pipes and a plurality of cooling nozzles mounted at the bottom of the plurality of first air supply pipes. The clamping and positioning mechanism includes a pair of bionic grippers. Each pair of bionic grippers includes a bionic contact layer, a middle layer, and an inner layer. The bionic contact layer has a receiving cavity, and the middle layer and the inner layer are sequentially installed in the receiving cavity of the bionic contact layer. The biomimetic contact layer is used to clamp a heat-absorbing component inside the wall panel on one side of the battery module. The heat-absorbing component includes a heat-absorbing channel, which is opened inside the wall panel on the side of the battery module clamped by the biomimetic contact layer and is opened along its long side. The heat-absorbing channel is set as a ring structure and is filled with a composite phase change material of paraffin and expanded graphite. The intermediate layer is disposed on the side close to the heat-absorbing component. The intermediate layer is an adjustable hardness layer composited with magnetorheological elastomer, used to adjust the hardness of the bionic gripper. The magnetorheological elastomer accounts for 20% to 40% of the intermediate layer material. The inner layer is provided with a heat dissipation component and a local deformation component. The heat dissipation component includes a fluid channel opened in the inner layer and arranged along the long side of the inner layer. The inlet and outlet of the fluid channel are located on the side wall of the inner layer. The local deformation component includes a plurality of independent and controllable airbag chambers arranged in an array in the inner layer and sequentially located between the pipes of the fluid channel. The driving mechanism includes a guide rail on the operating table, a pair of drive sliders driven by a linear motor slidably connected in the guide rail, a pair of mounting bases on the pair of drive sliders, and a pair of bionic grippers fixedly connected to the pair of drive sliders through the pair of mounting bases respectively; an electromagnetic coil is provided between the drive sliders and the mounting bases. The air-cooling component, the heat-absorbing component, and the heat-dissipating component constitute a collaborative heat dissipation system that provides immediate inertial protection and cooling to the welding area, rapid heat absorption at the interface, and continuous heat dissipation from the interior. The electromagnetic coil is used to provide a controllable magnetic field for the magnetorheological elastomer of the intermediate layer. The linear motor, the electromagnetic coil, and the independently controllable airbag chamber work together to achieve active adaptive control of the gripper's positioning, hardness, and morphology.

2. The battery connector welding and positioning device according to claim 1, characterized in that, Multiple support columns are fixedly connected to the operating platform, and mounting platforms are installed on the multiple support columns. The welding device is installed at the bottom of the mounting platform. The first gas supply pipe is used to supply nitrogen gas. A first mounting ring is installed on the side wall of the welding device, and multiple first gas supply pipes are installed on the first mounting ring at equal intervals.

3. The battery connector welding and positioning device according to claim 1, characterized in that, The biomimetic contact layer is composed of an elastomer material and a thermally conductive material. The elastomer material of the biomimetic contact layer is a high wear-resistant and thermally conductive silicone, and the thermally conductive material of the biomimetic contact layer includes one or more combinations of aluminum nitride and graphene. The outer wall of the biomimetic contact layer on the side that holds the battery module is integrally formed with biomimetic micro-textures.

4. The battery connector welding and positioning device according to claim 1, characterized in that, The intermediate layer is also composited with an elastomer material and a thermally conductive material. The elastomer material of the intermediate layer is a high wear-resistant and thermally conductive silicone, and the thermally conductive material of the intermediate layer includes one or more combinations of aluminum nitride and graphene. The magnetorheological elastomer is a magnetic particle, and the magnetic particle includes one or more combinations of micron-sized iron powder, carbonyl iron powder, and iron(III) oxide.

5. The battery connector welding and positioning device according to claim 1, characterized in that, The inner layer is composed of an elastomer material and a thermally conductive material. The elastomer material of the inner layer is thermally conductive silicone rubber, and the thermally conductive material of the inner layer includes one or more combinations of aluminum nitride and graphene.

6. The battery connector welding and positioning device according to claim 1, characterized in that, An inlet pipe is installed at the inlet of the fluid channel, a flow regulating valve is installed on the inlet pipe, and an outlet pipe is installed at the outlet of the fluid channel.

7. The battery connector welding and positioning device according to claim 1, characterized in that, Multiple airbag chambers are arranged along the thickness direction in the inner layer. A second air supply pipe is installed on the air inlet of each of the multiple airbag chambers. The end of the second air supply pipe away from the airbag chamber passes through the bionic contact layer and the mounting base in sequence and is placed on the outside of the mounting base. A distribution chamber is installed at the end of the second air supply pipe placed on the outside of the mounting base. A solenoid valve is installed on the pipe of the second air supply pipe placed on the outside of the mounting base.

8. The battery connector welding and positioning device according to claim 7, characterized in that, A filter assembly is provided at the front end of the air inlet of the distribution chamber. The filter assembly includes a filter device housing. A first filter screen and a second filter screen are installed in sequence in a detachable manner inside the filter device housing. The filter screen aperture of the first filter screen is larger than that of the second filter screen. A first air inlet pipe is installed on the air inlet of the filter device housing, and a pressure regulating valve is installed on the first air inlet pipe.

9. A battery connector welding and positioning device according to claim 8, characterized in that, A pair of linear motors are disposed at the bottom of the operating table. A second mounting ring is fixedly connected to the upper end of the drive slider. The mounting base is mounted on the second mounting ring. Multiple fixing bolts are threadedly connected between the second mounting ring and the mounting base. The electromagnetic coil is disposed inside the second mounting ring. An air supply groove is provided inside the drive slider. A pair of blowing nozzles are installed on the two side walls of the reciprocating movement of the drive slider. Both of the blowing nozzles are connected to the air supply groove. The pair of blowing nozzles are used to blow the guide rail and the track of the linear motor, respectively. A second air inlet pipe is installed on the air inlet of the blowing nozzle.

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