A battery welding positioning assembly and welding apparatus

Abstract

The application relates to the technical field of battery processing equipment, and discloses a battery welding positioning assembly and a welding device, which can effectively prevent battery tilting and reduce the problem of poor welding caused by battery tilting. The battery welding positioning assembly comprises oppositely arranged first and second jaw assemblies, the first and second jaw assemblies can approach or move away from each other along a first direction, wherein the first jaw assembly comprises a first fixed sleeve, a first top plate arranged in the first fixed sleeve and a first elastic piece, one end of the first fixed sleeve towards the second jaw assembly is provided with a first opening, and the first elastic piece is connected between the first top plate and the bottom wall of the first fixed sleeve; the battery comprises a first end and a second end moving away from each other, the first jaw assembly is used for fixing the first end, the second jaw assembly is used for fixing the second end, and the first direction is the height direction of the battery.

Description

Technical Field

[0001] This application relates to the field of battery processing equipment technology, and in particular to a battery welding positioning component and welding equipment. Background Technology

[0002] Cylindrical batteries consist of a cover and a casing. During assembly, laser welding is used to weld the cover and casing together. However, existing welding equipment tends to tilt the battery during installation, causing the laser beam to deviate from the target welding area and resulting in poor welding. Utility Model Content

[0003] The battery welding positioning component and welding equipment provided in this application can effectively prevent battery tilting, reduce welding defects caused by battery tilting, and improve battery production yield and product quality.

[0004] In a first aspect, embodiments of this application provide a battery welding positioning assembly including a first claw assembly and a second claw assembly disposed opposite to each other. Along a first direction, the first claw assembly and the second claw assembly can move closer to or further away from each other. The first claw assembly includes a first fixing sleeve and a first top plate and a first elastic member disposed within the first fixing sleeve. The end of the first fixing sleeve facing the second claw assembly has a first opening. The first elastic member is connected between the first top plate and the bottom wall of the first fixing sleeve. The battery includes a first end and a second end that are far apart from each other. The first claw assembly is used to fix the first end, and the second claw assembly is used to fix the second end. The first direction is the height direction of the battery.

[0005] In the above embodiment, the battery can specifically be a cylindrical battery, including a casing and a cover plate. The first end is the end where the bottom wall of the casing is located, and the second end is the end where the battery cover plate is located. The first claw assembly and the second claw assembly abut against the two ends of the battery, respectively. The first fixing sleeve has one open end and one closed end, forming a receiving groove. When the battery welding positioning assembly fixes the battery, the first claw assembly and the second claw assembly move closer to each other, and the first top plate abuts against the first end of the battery. Since a first elastic element connects the first top plate and the first fixing sleeve, a floating connection is formed between the first top plate and the first fixing sleeve. Under the pressure of the battery, the first top plate moves towards the bottom wall of the first fixing sleeve. At this time, the first elastic element is compressed, so that part of the battery is located in the receiving groove of the first fixing sleeve. Within the allowable error range, the first fixing sleeve can keep the battery coaxial with it, effectively avoiding the problem of poor welding caused by the battery tilting during the welding process. At the same time, the first elastic element has a pre-tightening force after being compressed. This pre-tightening force can make the second end of the battery press against the second claw assembly, so that the battery can be firmly clamped and the welding can be accurately positioned.

[0006] Secondly, embodiments of this application also provide a welding device, which includes a rotary cam assembly and the aforementioned battery welding positioning assembly. The battery welding positioning assembly is mounted to the rotary cam assembly via a connecting assembly, and the rotary cam assembly is used to drive the first jaw assembly and the second jaw assembly to move closer or further apart. Based on the advantage that the aforementioned battery welding positioning assembly can effectively prevent battery tilting, the welding device of this application can reduce welding defects caused by battery tilting, thereby improving battery production yield and product quality. Attached Figure Description

[0007] Figure 1 A schematic diagram of the structure of a battery welding positioning assembly provided in one embodiment of this application; Figure 2 A schematic diagram of the structure of the first fixing sleeve provided in one embodiment of this application; Figure 3 An assembly diagram of the first fixing sleeve and the first top plate provided in one embodiment of this application; Figure 4 A top view of a first fixing sleeve and a first top plate provided for one embodiment of this application; Figure 5 A top view of the first fixing sleeve and the first top plate provided for another embodiment of this application; Figure 6 A top view of the first fixing sleeve and the first top plate provided for another embodiment of this application; Figure 7 A schematic diagram of the structure of a battery welding positioning assembly provided in another embodiment of this application; Figure 8 A schematic diagram of the structure of the second fixing sleeve provided in one embodiment of this application; Figure 9 A top view of the second fixing sleeve and the second top plate provided in one embodiment of this application; Figure 10 A top view of the second fixing sleeve and the second top plate provided for another embodiment of this application; Figure 11 A partial assembly view of the battery welding positioning assembly and the rotary cam assembly provided in one embodiment of this application; Figure 12 A schematic diagram of the structure of a welding device provided in one embodiment of this application; Figure 13 A side view of a cylindrical cam provided in one embodiment of this application; Figure 14 A partial view of the assembly of the battery welding positioning component and the cam provided for another embodiment of this application; Figure 15An assembly diagram of a battery welding positioning assembly and a connecting assembly provided for another embodiment of this application.

[0008] Figure label: 1-First gripper assembly; 2-Second gripper assembly; X-First direction; 101-First fixing sleeve; 102-First top plate; 103-First elastic element; 104-First opening; 1011-First side wall; 1012-Second side wall; 10121-First limiting block; 1021-First limiting groove; 10122-Second limiting groove; 1022-Second limiting block; 201-Second fixing sleeve; 202-Second top plate; 203-Second elastic element; 2011-Third side wall; 2012-Fourth side wall; 2013-Allowing groove; 20121-Third limiting block; 2021-Third limiting groove; 20122-Fourth limiting groove; 2022-Fourth limiting block; 3-Gripper assembly; 301-Slide rail; 302-First support arm; 303-Second support arm; 4-Drive motor; 200-Cylindrical cam; 100-Battery welding positioning assembly; 21-First groove; 22-Second groove; 23-Third groove; 221-Inclined rising section; 222-First horizontal holding section; 223-Inclined falling section; 224-Second horizontal holding section; 31-First connector; 311-First mounting plate; 312-First connecting rod; 313-First fixing plate; 314-First pin; 32-Second connector; 321-Second mounting plate; 3211-Through groove; 322-Second fixing plate; 323-Second pin; 33-Third connector; 331-Third mounting plate; 332-Third connecting rod; 333-Third pin; 34-Linear guide rail; 300 - Loading platform; 0 - Battery. Detailed Implementation

[0009] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of the application is provided in conjunction with the accompanying drawings and embodiments.

[0010] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more” unless the context clearly indicates otherwise.

[0011] References to “an embodiment” or “a specific embodiment” as used in this specification mean that one or more embodiments of this application include a particular feature, structure, or characteristic described in connection with that embodiment. The terms “comprising,” “including,” “having,” and variations thereof mean “including, but not limited to,” unless otherwise specifically emphasized.

[0012] A battery is used to store chemical energy and controllably convert it into electrical energy. In recyclable batteries, the active materials can be reactivated by charging after discharge, allowing for continued use. A battery includes a casing and battery cells housed within the casing. The battery casing can be cylindrical, with a cylindrical cavity inside.

[0013] The battery casing includes a housing and a cover. The housing provides a space to house and isolate electrode assemblies and other components from the external environment. The housing generally comprises a body with an opening at at least one end and a receiving cavity. The opening of the housing can be closed by the cover, sealing and isolating the internal environment of the battery cell from the external environment. Materials used for the housing include, but are not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, and aluminum-plastic film. The cover is a component that closes the opening of the housing to isolate the internal environment of the battery cell from the external environment. Materials used for the cover include, but are not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, and aluminum-plastic film.

[0014] A battery mainly consists of a housing that encloses a cavity, a battery cover, and battery cells housed within the cavity. The battery cover is fixedly connected to the housing using a laser welding process. In some related technologies, laser welding is commonly used to weld the battery housing and battery cover. Laser welding equipment includes a clamping assembly and rollers. The clamping assembly is used to fix the individual battery cells, and the rollers are used to drive the individual battery cells to rotate. The clamping assembly includes an upper pressure head, a lower pressure head, and grippers. During operation, the grippers hold the battery, and the upper and lower pressure heads abut against both ends of the battery, thereby fixing it in place. Then, the rollers drive the individual battery cells to rotate, allowing the laser to weld multiple circumferential points of the battery cover to the housing. However, when the rollers drive the battery to rotate, due to the poor fixing effect of the pressure head, the battery may wobble, causing the battery to become misaligned with the clamping assembly. This can cause the laser beam to deviate from the target welding area of ​​the battery, resulting in poor welding.

[0015] In view of this, embodiments of this application provide a battery welding positioning component and welding equipment, which can effectively prevent battery tilting, reduce welding defects caused by battery misalignment, and improve battery production yield and product quality. Embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0016] Figure 1This is a schematic diagram of the structure of a battery welding positioning assembly provided in one embodiment of this application, as shown below. Figure 1 As shown, an embodiment of this application provides a battery welding positioning assembly including a first claw assembly 1 and a second claw assembly 2 disposed opposite to each other. The first claw assembly 1 and the second claw assembly 2 can move closer to or further away from each other along a first direction X. The first claw assembly 1 includes a first fixing sleeve 101, a first top plate 102 disposed within the first fixing sleeve 101, and a first elastic member 103. The end of the first fixing sleeve 101 facing the second claw assembly 2 has a first opening 104, and the first elastic member 103 is connected between the first top plate 102 and the bottom wall of the first fixing sleeve 101. The battery 0 includes a first end A and a second end B that are far apart from each other along its height direction. The first claw assembly 1 is used to fix the first end A, and the second claw assembly 2 is used to fix the second end B. The first direction X is the height direction of the battery.

[0017] In the above embodiment, the battery 0 can specifically be a cylindrical battery, including a casing and a cover plate (not shown in the figure), with the height direction referring to the arrangement direction of the casing and the cover plate. The first end A is the end where the bottom wall of the casing is located, and the second end B is the end where the cover plate is located. The first claw assembly 1 and the second claw assembly 2 abut against the two ends of the battery 0 respectively. The first fixing sleeve 101 is open at one end and closed at the other end, forming a receiving groove. When the battery welding positioning assembly fixes the battery, the first claw assembly 1 and the second claw assembly 2 move closer to each other, and the first top plate 102 abuts against the first end A of the battery 0. Since the first top plate 102 and the first fixing sleeve 101 are connected by a first elastic member 103, a floating connection is formed between the first top plate 102 and the first fixing sleeve 101. Under the pressure of the battery 0, the first top plate 102 moves along the first direction X towards the bottom wall of the first fixing sleeve 101. At this time, the first elastic member 103 is compressed, so that part of the battery 0 is located in the receiving groove of the first fixing sleeve 101. Within the allowable error range, the first fixing sleeve 101 can limit the circumferential movement of the battery 0, keeping the battery 0 coaxial with it, effectively preventing the battery 0 from tilting during the welding process and causing poor welding. At the same time, the first elastic element 103 has a pre-tightening force after being compressed. This pre-tightening force can make the second end B of the battery 0 press against the second claw assembly 2, thereby ensuring that the battery 0 is firmly clamped, preventing the battery from tilting, and enabling precise positioning during welding.

[0018] In one embodiment, the first fixing sleeve 101 is a cylindrical fixing sleeve, which has a better fixing effect on the cylindrical battery.

[0019] In one embodiment, the inner wall of the first fixing sleeve 101 is connected to and perpendicular to the bottom wall of the first fixing sleeve 101, so that the inner wall of the first fixing sleeve 101 is cylindrical, which can play a circumferential limiting role for the battery 0, so that the battery 0 and the first fixing sleeve 101 are basically coaxial, preventing the battery 0 from tilting.

[0020] Figure 2 A schematic diagram of the structure of the first fixing sleeve provided in one embodiment of this application is shown below. Figure 2 As shown, in another embodiment, the inner wall of the first fixing sleeve 101 includes a first sidewall 1011 and a second sidewall 1012 connected to each other. The second sidewall 1012 is connected to the bottom wall of the first fixing sleeve 101 and is perpendicular to it. The diameter of the first sidewall 1011 gradually decreases along the direction close to the bottom wall of the first fixing sleeve 101. Specifically, the first fixing sleeve 101 includes two parts: the first sidewall 1011 is located in the first part, and the second sidewall 1012 is located in the second part. The second part is cylindrical. Because the diameter of the first sidewall 1011 gradually decreases along the direction close to the bottom wall of the first fixing sleeve 101, the inner side of the first part is flared, and the diameter is larger the closer to the opening of the first fixing sleeve 101. In this way, even if the battery 0 is inserted at a position slightly off the axis of the first fixing sleeve 101, the first sidewall 1011 can still guide the battery 0, allowing it to slide along the first sidewall 1011 and be inserted into the first fixing sleeve 101. After the battery 0 is inserted into the first fixing sleeve 101, the second part can limit the battery and prevent it from tilting.

[0021] In one embodiment, the height of the first fixing sleeve 101 is a mm along the direction perpendicular to the bottom wall of the first fixing sleeve 101, where 20 ≤ a ≤ 100. The value of a can be any value among 20, 30, 40, 50, 60, 70, 80, 90, and 100, preferably 30 or 80. If the value of a is less than the above range, the peripheral limiting effect on the battery 0 is not significant; if the value of a is greater than the above range, the battery 0 is not easily inserted into the first fixing sleeve 101.

[0022] In one embodiment, the length of the first sidewall 1011 along a direction parallel to the bottom wall of the first fixing sleeve 101 is b mm, where 2 ≤ b ≤ 30. The value of b can be any value among 2, 5, 10, 13, 15, 20, 25, and 30, preferably 10. If the value of b is less than the above range, the guiding effect of the first sidewall 1011 is not significant, and the battery is not easily inserted into the first fixing sleeve 101. If the value of b is greater than the above range, the wall thickness of the first part of the first fixing sleeve 101 is thin, resulting in lower strength and easier damage.

[0023] In one embodiment, the height of the first sidewall 1011 along the direction perpendicular to the bottom wall of the first fixing sleeve 101 is c mm, where 3 ≤ c ≤ 30. The value of c can be any value among 3, 6, 10, 12, 15, 21, 25, and 30, preferably 10. If the value of c is less than the above range, the guiding effect of the first sidewall 1011 is not obvious, and the battery 0 is not easily inserted into the first fixing sleeve 101. If the value of c is greater than the above range, the wall thickness of the first part of the first fixing sleeve 101 is thin, resulting in lower strength and easier damage.

[0024] Figure 3 An assembly diagram of the first fixing sleeve and the first top plate provided in one embodiment of this application is shown. Figure 4 A top view of the first fixing sleeve and the first top plate provided in one embodiment of this application, combined with Figure 3 and Figure 4 In a further embodiment, the second sidewall 1012 is provided with a first limiting block 10121, and the outer circumferential wall of the first top plate 102 is provided with a first limiting groove 1021. When the first top plate 102 floats, the first limiting block 10121 slides in the first limiting groove 1021. Specifically, the height of the first limiting block 10121 can be the same as the height of the second sidewall 1012, and the first limiting block 10121 can play a guiding role. When the first top plate 102 floats, it can move closer to or away from the bottom wall of the first fixed sleeve 101 along the first limiting block 10121. During welding, the battery 0 needs to be rotated. Since there is mutual pressure between the first top plate 102 and the battery 0, when the battery rotates, there is mutual friction between the battery 0 and the first top plate 102. The battery 0 will drive the first top plate 102 to rotate together, which will damage the first elastic element 103. Since the first limiting block 10121 and the first limiting groove 1021 cooperate with each other, the first limiting block 10121 can restrict the first top plate 102 from rotating around the battery 0 axis.

[0025] The second sidewall 1012 may be provided with a plurality of first limiting blocks 10121, which may be arranged at intervals along the circumference of the second sidewall 1012. Correspondingly, the number of first limiting grooves 1021 is the same as the number of first limiting blocks 10121, and the plurality of first limiting grooves 1021 are correspondingly arranged and assembled with the plurality of first limiting blocks 10121.

[0026] Figure 5 A top view of the first fixing sleeve and the first top plate provided for another embodiment of this application, as shown below. Figure 5 As shown, or in another embodiment, the second sidewall 1012 is provided with a second limiting groove 12122, and the outer wall of the first top plate 102 is provided with a second limiting block 1022. When the first top plate 102 is floating, the second limiting block 1022 slides in the second limiting groove 12122.

[0027] The second sidewall 1012 is provided with a plurality of second limiting grooves 12122, which are spaced apart along the circumference of the second sidewall 1012. The outer wall of the first top plate 102 is provided with a plurality of second limiting blocks 1022. Correspondingly, the number of second limiting blocks 1022 is the same as the number of second limiting grooves 12122, and the plurality of second limiting blocks 1022 are correspondingly arranged and assembled with the plurality of second limiting grooves 12122.

[0028] Figure 6 A top view of the first fixing sleeve and the first top plate provided for another embodiment of this application, as shown below. Figure 6 As shown, or in another embodiment, the second sidewall 1012 is provided with a limiting groove and a limiting block, and correspondingly, the outer wall of the first top plate 102 is provided with a limiting block and a limiting groove. The limiting block on the first top plate 102 slides in the limiting groove on the second sidewall 1012; the limiting block on the second sidewall 1012 slides in the limiting groove of the grid on the first top plate 102.

[0029] Figure 7 Another embodiment of this application provides a schematic diagram of the structure of a battery welding positioning assembly, as shown below. Figure 7 As shown, in one embodiment, the second claw assembly 2 includes a second fixing sleeve 201, a second top plate 202 disposed in the second fixing sleeve 201, and a second elastic member 203. The end of the second fixing sleeve 201 facing the first claw assembly 1 has a second opening, and the second elastic member 203 is connected between the second top plate 202 and the bottom wall of the second fixing sleeve 201. The second fixing sleeve 201 can also be cylindrical. Since the second elastic member 203 connects the second top plate 202 and the second fixing sleeve 201, a floating connection is formed between the second top plate 202 and the second fixing sleeve 201. When the first claw assembly 1 and the second claw assembly 2 approach each other, under the drive of the first claw assembly 1, the battery 0 exerts pressure on the second top plate 202, causing the second top plate 202 to gradually approach the bottom wall of the second fixing sleeve 201, thereby allowing part of the battery 0 to be inserted into the second fixing sleeve 201. The second fixing sleeve 201 and the first fixing sleeve 101 limit the circumferential movement of the battery, so that the battery 0, the first fixing sleeve 101 and the second fixing sleeve 201 remain coaxial.

[0030] In one embodiment, the inner wall of the second fixing sleeve 201 is connected to and perpendicular to the bottom wall of the second fixing sleeve 201.

[0031] Figure 8 A schematic diagram of the structure of the second fixing sleeve provided in one embodiment of this application is shown below. Figure 8As shown, in another embodiment, the second fixing sleeve 201 can have the same structure as the first fixing sleeve 101, and its inner sidewall includes a third sidewall 2011 and a fourth sidewall 2012 connected to each other. The third sidewall 2011 and the fourth sidewall 2012 form an angle. The fourth sidewall 2012 is perpendicular to the bottom wall of the second fixing sleeve 201. The third sidewall 2011 gradually decreases in size near the bottom wall of the second fixing sleeve 201, forming a funnel shape at the opening of the second fixing sleeve 201, thus allowing the battery 0 to be easily inserted into the second claw assembly 2.

[0032] Figure 9 A top view of the second fixing sleeve and the second top plate provided in one embodiment of this application, as shown below. Figure 9 As shown, in one embodiment, the fourth sidewall 2012 may be provided with a plurality of third limiting blocks 20121, which extend axially along the second fixing sleeve 201. The second top plate 202 has a third limiting groove 2021 on its periphery, into which the third limiting blocks 20121 extend. The second top plate 202 can move along the extending direction of the third limiting blocks 20121, preventing the second top plate 202 from rotating along with the battery and damaging the second elastic member 203.

[0033] Figure 10 A top view of the second fixing sleeve and the second top plate provided for another embodiment of this application, as shown below. Figure 10 As shown, or in another embodiment, the fourth sidewall 2012 may be provided with a plurality of fourth limiting grooves 20122, which extend axially along the second fixing sleeve 201. Correspondingly, the second top plate 202 is provided with a fourth limiting block 2022 on its periphery, which is inserted into the fourth limiting groove 20122. The second top plate 202 can move along the extending direction of the fourth limiting groove 20122, preventing the second top plate 202 from rotating along with the battery and damaging the second elastic member 203.

[0034] It is worth noting that there may be a gap between the outer wall of battery 0 and the first side wall 1011, and there may also be a gap between the outer wall of battery 0 and the fourth side wall 2012. The structure and dimensions of the first claw assembly 1 and the second claw assembly 2 may be exactly the same.

[0035] Figure 11 A partial assembly view of the battery welding positioning assembly and the rotary cam assembly provided in one embodiment of this application is shown below. Figure 11As shown, in one embodiment, the battery welding positioning assembly further includes a gripper assembly 3, which is disposed between the first gripper assembly 1 and the second gripper assembly 2. The gripper assembly 3 is used to grip the battery. Specifically, the gripper assembly 3 includes a slide rail 301, a first arm 302, and a second arm 303, forming a gripping space between the first arm 302 and the second arm 303. The extension direction of the slide rail 301 is perpendicular to the first direction X. The first arm 302 and the second arm 303 can slide along the slide rail 301, moving closer or further apart to hold or release the battery.

[0036] In one embodiment, the edge of the second opening of the second fixing sleeve 201 is provided with a plurality of clearance grooves 2013 (welding holes), which are used to allow the laser beams of the laser welding equipment to pass through. Specifically, the plurality of clearance grooves 2013 are arranged at intervals along the circumference of the second fixing sleeve 201. The spacing between two adjacent clearance grooves 2013 is not specifically limited and can be specifically set according to the needs of the laser welding process. The clearance grooves 2013 can be square grooves or semi-circular grooves, etc.

[0037] In one embodiment, a drive motor 4 is provided at the end of the second claw assembly 2 opposite to the first claw assembly 1. The drive motor 4 drives the second claw assembly 2 to rotate around the axial direction of the battery. When the drive motor 4 drives the second claw assembly 2 to rotate, the battery 0 rotates together with the second claw assembly 2 under the action of friction between the second top plate 202 and the battery 0. When the battery 0 and the second claw assembly 2 rotate to a preset position, the welding equipment's ray passes through the clearance groove 2013 to weld the cover plate.

[0038] Figure 12 This is a schematic diagram of the structure of a welding device provided in one embodiment of this application, combined with... Figure 11 and Figure 12 The embodiments of this application also provide a welding device, which includes a rotary cam assembly and a battery welding positioning assembly 100 as described in any of the above embodiments. The battery welding positioning assembly 100 is mounted on the rotary cam assembly via a connecting assembly. The rotary cam assembly is used to drive the first claw assembly 1 and the second claw assembly 2 to move closer to or further away from each other.

[0039] Figure 14 A partial assembly view of the battery welding positioning assembly and the cam provided for another embodiment of this application, in conjunction with... Figure 11 and Figure 14The rotary cam assembly includes a cylindrical cam 200, whose outer wall is circumferentially provided with a first groove 21, a second groove 22, and a third groove 23. The first groove 21, the second groove 22, and the third groove 23 are spaced apart along the axial direction of the cylindrical cam 200. The first groove 21, the second groove 22, and the third groove 23 are arranged sequentially from bottom to top. The connecting assembly includes a first connector 31, a second connector 32, and a third connector 33. The first connector 31 connects the first jaw assembly 1 and the second groove 22; the second connector 32 connects the second jaw assembly 2 and the first groove 21; and the third connector 33 connects the jaw assembly 3 and the third groove 23.

[0040] The beginning and end of each groove are connected to form a continuous closed-loop trajectory, so that the first jaw assembly 1, the second jaw assembly 2, and the gripper assembly 3 can move around the cylindrical cam 200 along the trajectory. The first groove 21 forms a first motion trajectory, the second groove 22 forms a second motion trajectory, and the third groove 23 forms a third motion trajectory. The first motion trajectory, the second motion trajectory, and the third motion trajectory formed by the first groove 21, the second groove 22, and the third groove 23 are all different. Figure 13 This is a side view of a cylindrical cam provided in one embodiment of the present application, illustrating an exemplary unfolded structure of a groove. Each groove includes an inclined rising section 221, a first horizontal holding section 222, a second horizontal holding section 224, and an inclined falling section 223. Taking the second groove 22 as an example, the second horizontal holding section 224 of the second groove 22 is the initial position of the first pawl assembly 1. When the first pawl assembly 1 slides along this trajectory, it remains unchanged in the height direction. When sliding to the inclined rising section 221, the first pawl assembly 1 rises; when sliding to the inclined falling section 223, the first pawl assembly 1 falls. The rising and falling trend of the first motion trajectory formed by the first groove 21 can be opposite to the rising and falling trend of the second motion trajectory formed by the second groove 22, thereby enabling the first pawl assembly 1 and the second pawl assembly 2 to move closer to or further away from each other. The specific trajectory shapes of the first groove 21, the second groove 22, and the third groove 23 can be set according to actual needs, and the present application does not impose specific limitations.

[0041] Figure 15 An assembly drawing of the battery welding positioning assembly and the connecting assembly, provided for another embodiment of this application, is shown below. Figure 14 and Figure 15As shown, in one embodiment, the first connecting member 31 includes a first mounting plate 311, a first connecting rod 312, and a first fixing plate 313. The first fixing plate 313 is vertically disposed on the first mounting plate 311, and the first connecting rod 312 is located between the first mounting plate 311 and the first fixing plate 313. A first claw assembly 1 is mounted on the top of the first fixing plate 313. The second connecting member 32 includes a second mounting plate 321 and a second fixing plate 322 connected to each other. The second fixing plate 322 is vertically disposed on the second mounting plate 321. The second claw assembly 2 is mounted on the bottom of the second fixing plate 322. The second mounting plate 321 is provided with a through groove 3211, the extension direction of which is a first direction X. The first connecting rod 312 passes through the through groove 3211, so that the first mounting plate 311 and the first fixing plate 313 are respectively located on both sides of the second mounting plate 321. The third connector 33 includes a third mounting plate 331 and a third link 332 connected to each other. One end of the third link 332 is connected to the third mounting plate 331, and the other end is connected to the gripper assembly 3. The third link 332 also passes through the through groove 3211, so that the third mounting plate 331 and the gripper assembly 3 are located on both sides of the second mounting plate 321. The first connector 31 and the third connector 33 can slide in the through groove 3211 along the first direction X.

[0042] To ensure that the first jaw assembly 1, the second jaw assembly 2, and the gripper assembly 3 remain approximately coaxial as they move around the cylindrical cam 200, in one embodiment, the second mounting plate 321 is further provided with a linear guide rail 34 on the side opposite to the second fixed plate 322, such as... Figure 14 As shown, both the first mounting plate 311 and the third mounting plate 331 are slidably mounted on the linear guide rail 34. The extension direction of the linear guide rail 34 is the first direction X.

[0043] The first mounting plate 311, the second mounting plate 321, and the third mounting plate 331 are parallel to each other. The first mounting plate 311 is located between the second mounting plate 321 and the third mounting plate 331. A first pin 314 is provided on the side of the first mounting plate 311 opposite to the first fixing plate 313, and this first pin 314 is slidably installed in the second groove 22. A second pin 323 is provided on the side of the second mounting plate 321 opposite to the second fixing plate 322, and this second pin 323 is slidably installed in the first groove 21. A third pin 333 is provided on the side of the third mounting plate 331 opposite to the third connecting rod 332, and this third pin 333 is slidably installed in the third groove 23.

[0044] In one embodiment, the welding equipment includes a plurality of battery welding positioning components, which are spaced apart around the circumference of the rotating cylindrical cam 200.

[0045] In one embodiment, the welding equipment further includes a loading platform 300, which is disposed on the side of the rotating cylindrical cam 200 for transferring the battery to the battery welding positioning assembly 100.

[0046] The welding equipment operates as follows: the loading table 300 rotates the unwelded battery to a preset position, while the cylindrical cam 200 drives the battery welding positioning assembly 100 to rotate to the preset position as well, and the gripper assembly 3 clamps the battery. The first gripper assembly 1 and the second gripper assembly 2 approach each other. The first end A of the battery is inserted into the first fixing sleeve 101, and the first top plate 102 presses the first end A of the battery firmly against it. The second end B of the battery is inserted into the second fixing sleeve 201, and the second top plate 202 presses the second end B of the battery firmly against it, thus fixing the battery. Then the gripper assembly 3 opens. At this time, the first gripper assembly 1 and the second gripper assembly 2 can move in the horizontal holding section of the trajectory, and the clamping force of the battery welding positioning assembly 100 on the battery remains unchanged. The drive motor 4 drives the second gripper assembly 2 to rotate, while simultaneously causing the battery to rotate around its axis. When the battery rotates to the preset welding position, the ray passes through the clearance groove 2013 to weld the battery.

[0047] The welding equipment described in this application can reduce welding defects caused by battery tilting, thereby improving battery production yield and product quality.

[0048] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A battery welding positioning assembly, characterized in that, The first and second jaw assemblies are arranged opposite to each other, and along a first direction, the first jaw assembly and the second jaw assembly can move closer to or further away from each other. The first claw assembly includes a first fixing sleeve and a first top plate and a first elastic member disposed in the first fixing sleeve. The end of the first fixing sleeve facing the second claw assembly has a first opening, and the first elastic member is connected between the first top plate and the bottom wall of the first fixing sleeve. The battery includes a first end and a second end that are far apart from each other. The first claw assembly is used to fix the first end, and the second claw assembly is used to fix the second end. The first direction is the height direction of the battery.

2. The battery welding positioning assembly according to claim 1, characterized in that, The first fixing sleeve is a cylindrical fixing sleeve.

3. The battery welding positioning assembly according to claim 2, characterized in that, The inner sidewall of the first fixing sleeve includes a first sidewall and a second sidewall that are connected to each other. The diameter of the first sidewall gradually decreases along the direction close to the bottom wall of the first fixing sleeve. The second sidewall is connected to the bottom wall of the first fixing sleeve and is perpendicular to each other.

4. The battery welding positioning assembly according to claim 3, characterized in that, The second sidewall is provided with a first limiting block, and the outer circumferential wall of the first top plate is provided with a first limiting groove. When the first top plate is floating, the first limiting block slides in the first limiting groove. Alternatively, the second sidewall is provided with a second limiting groove, and the outer circumferential wall of the first top plate is provided with a second limiting block. When the first top plate is floating, the second limiting block slides in the second limiting groove.

5. The battery welding positioning assembly according to claim 4, characterized in that, The second sidewall is provided with a plurality of first limiting blocks, which are spaced apart along the circumference of the second sidewall. The outer circumferential wall of the first top plate is provided with a plurality of first limiting grooves, and the plurality of first limiting blocks are correspondingly provided with the plurality of first limiting grooves. Alternatively, the second sidewall is provided with a plurality of second limiting grooves, which are spaced apart circumferentially along the second sidewall, and the outer circumferential wall of the first top plate is provided with a plurality of second limiting blocks, which are correspondingly provided with the plurality of second limiting grooves.

6. The battery welding positioning assembly according to claim 2, characterized in that, The inner wall of the first fixing sleeve is connected to the bottom wall of the first fixing sleeve and is perpendicular to each other.

7. The battery welding positioning assembly according to claim 1, characterized in that, The second claw assembly includes a second fixed sleeve, a second top plate and a second elastic member disposed in the second fixed sleeve, the end of the second fixed sleeve facing the first claw assembly has a second opening, and the second elastic member is connected between the second top plate and the bottom wall of the second fixed sleeve.

8. The battery welding positioning assembly according to claim 7, characterized in that, The inner wall of the second fixing sleeve is connected to and perpendicular to the bottom wall of the second fixing sleeve.

9. The battery welding positioning assembly according to claim 7, characterized in that, The edge of the second opening is provided with multiple clearance grooves, which are used to allow the welding equipment's rays to pass through.

10. The battery welding positioning assembly according to claim 1, characterized in that, The second claw assembly has a drive motor at one end opposite to the first claw assembly, and the drive motor is used to drive the second claw assembly to rotate around the axis of the battery.

11. The battery welding positioning assembly according to claim 1, characterized in that, It also includes a gripper assembly disposed between the first gripper assembly and the second gripper assembly, the gripper assembly being used to grip the battery.

12. The battery welding positioning assembly according to claim 3, characterized in that, Along the direction perpendicular to the bottom wall of the first fixed sleeve, the height of the first fixed sleeve is a mm, where 20 ≤ a ≤ 100.

13. The battery welding positioning assembly according to claim 3, characterized in that, Along a direction parallel to the bottom wall of the first fixed sleeve, the length of the first side wall is b mm, where 2 ≤ b ≤ 30.

14. The battery welding positioning assembly according to claim 3, characterized in that, Along the direction perpendicular to the bottom wall of the first fixed sleeve, the height of the first side wall is c mm, where 3 ≤ c ≤ 30.

15. A welding device, characterized in that, It includes a rotary cam assembly and a battery welding positioning assembly as described in any one of claims 1 to 14, wherein the battery welding positioning assembly is mounted on the rotary cam assembly via a connecting assembly, and the rotary cam assembly is used to drive the first jaw assembly and the second jaw assembly to move closer to or further away from each other.

16. The welding equipment according to claim 15, characterized in that, The rotary cam assembly includes a cylindrical cam, the outer circumferential wall of which is provided with a first groove and a second groove; the first groove and the second groove are spaced apart along the axial direction of the cylindrical cam; the connecting assembly includes a first connector and a second connector, the first connector connecting the second groove and the first chuck assembly, and the second connector connecting the second chuck assembly and the first groove.

17. The welding equipment according to claim 16, characterized in that, The battery welding positioning assembly includes a gripper assembly disposed between the first gripper assembly and the second gripper assembly. The circumferential outer wall of the cylindrical cam is also provided with a third groove, which is disposed on the side of the second groove opposite to the first groove. The connecting assembly also includes a third connector, which connects the gripper assembly and the third groove.

18. The welding equipment according to claim 17, characterized in that, The first groove forms a first motion trajectory, the second groove forms a second motion trajectory, and the third groove forms a third motion trajectory. The first motion trajectory, the second motion trajectory, and the third motion trajectory are all different.

19. The welding equipment according to claim 15, characterized in that, It also includes a loading platform, which is located on the side of the rotary cam assembly and is used to transfer the battery to the battery welding and positioning assembly.

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